40results about How to "Avoid tipping accidents" patented technology

The present invention is the construction process of laying wide bore pipe into pipe canal and relates to one important pipeline construction step. The present invention features that during excavating pipe canal, one soil partition wall is preserved in each certain distance; the pipe is first hoisted with two pipe layers and settled on the partition walls, and the initial end of the pipe is lifted before the soil partition wall is dug out with excavator and then settled slowly into the pipe canal; and all the partition walls are dug out successively and the pipes are settled in the pipe canal. The construction process includes the main steps of: preparation, the first pipe canal excavation, shifting pipes and detection, the second pipe canal excavation, and laying the pipes. The main advantages includes using two pipe layers only, low cost, low power consumption, simplified construction process, short construction period, etc.

The invention discloses a movable lifting compact rack. According to the movable lifting compact rack, lifting assembles can be matched with hanging grooves in hanging plates on partition plates, andcorrespondingly the partition plates can be lifted and adjusted through the lifting assemblies; after adjustment is completed, the partition plates are fixed by pin shafts, and the operation is simpleand convenient; the distance between every two partition plates can be adjusted according to demands or the partition plates are lifted after files are arranged on the partition plates below, and theoperation is simple and convenient. According to the movable lifting compact rack, by arranging supporting and locking assemblies, the stability of a compact rack body is enhanced, the compact rack body can also be lifted at the same time, and the use convenience and safety of the compact rack body are improved; by arranging partition seats to limit the files, the stability of file placement is improved, the files are prevented from falling down, workers have no need to rearrange the files, and the workload and working strength of the workers are reduced.

The invention discloses a dumper hydraulic system comprising a hydraulic power unit, and a parking circuit, a hydraulic circuit, a control circuit and a positioning circuit which are controlled by the hydraulic power unit. The hydraulic power unit is used for supplying oil for a main oil circuit through a single oil pump, and the main oil circuit is connected to an electromagnetic relief valve for oil return; the main oil circuit is used for supplying oil to an oil cylinder of the parking circuit through an electro-hydraulic directional valve, dual hydraulic control check valves, a one-way throttle valve and a hydraulic control check valve; the main oil circuit is used for supplying the oil to the oil cylinder of the hydraulic circuit through the electro-hydraulic directional valve, the dual hydraulic control check valves, the one-way throttle valve and the hydraulic control check valve, and the oil pressure of the main oil circuit is reduced through a pilot-operated reducing valve; the main oil circuit is provided with two branches connected to electromagnetic directional valves separately and then connected to the hydraulic control check valves of the parking circuit and the hydraulic circuit to form the control circuit separately; and the oil pressure of the main oil circuit is adjusted through the electromagnetic directional valves, the dual hydraulic control check valves and the one-way throttle valve, and the main oil circuit is used for supplying the oil to a pin cylinder of the positioning circuit. The system is complete in functions and high in safety.

The invention provides a medical auxiliary nursing machine. The machine comprises a main chair and an external hanging part. The main chair comprises a seat support, a back support, a leg support, a first driving device and a transversely-moving device. The back support can be rotatably arranged on the back side of the seat support. The leg support can be rotatably arranged on the front side of the seat support. Additionally, all the seat support, the back support and the leg support comprise multiple roll shafts and conveyor belts arranged outsides the multiple roll shafts. The first drivingdevice is configured to drive at least one roll shaft to rotate such that the conveyor belts move along the width direction of the main chair. The transversely-moving device is configured to drive theseat support, the back support and the leg support to move along the width direction of the main chair. The external hanging part comprises a fixing rack and an overturning-assisted device installedon the fixing rack. The fixing rack is configured to be installed on a hospital bed. The overturning-assisted device is equipped with a second driving device and an overturning-assisted plate. The medical auxiliary nursing machine is a portable nursing machine for daily use which can help a paralyzed person go to and out of bed and turn over his body by himself on the bed.

The invention discloses a novel VR equipment suspension frame. The frame is characterized in that one end of a transverse adjusting rod is movably hinged to the top end of a first longitudinal rod andis fastened through a fastener, one end of a wire harness required by the VR equipment penetrates through a second longitudinal rod to be connected with the internal terminal of the second longitudinal rod, and the other end penetrates through a plurality of wire harness rings in sequence to extend to the tail end of the transverse adjusting rod and is connected with the VR equipment; at least two supporting legs extending towards the ground are arranged on the outer wall of the second longitudinal rod, the supporting legs are connected with the second longitudinal rod through a connecting rod, a sucker is arranged at the bottom end of the second longitudinal rod, and a hollow cavity for containing the water or the gravel is formed inside the sucker; through holes are formed in the middlesections of the supporting legs, and fixing cones can vertically penetrate through the through holes to be drilled into the ground; and an extension rotating shaft is further arranged on the outer wall of the second longitudinal rod, a wire coil sleeves the extension rotating shaft, one end of the wire harness is wound around the wire coil and extends to penetrate through the second longitudinalrod to be connected with the internal terminal of the second longitudinal rod. The novel VR equipment suspension frame is simple in structure and convenient to use, and can effectively improve the neatness of the VR experience area.

The invention discloses a mobile robot and a walking mechanism thereof. The walking mechanism comprises a bottom plate, two driving wheels, two driving wheel suspension assemblies, a connecting frame and at least one driven wheel. The driving wheel suspension assembly comprises a fixing base, a swing arm, a damping assembly and a connecting piece. The fixing base is fixed to the bottom plate, the swing arm is hinged to the fixing base, the damping assembly is connected between the swing arm and the connecting piece, and the driving wheel is rotatably installed on the swing arm. The connecting piece is used for being connected with a mobile robot body, and the connecting frame is connected to swing arms of the two driving wheel suspension assemblies. When the mobile robot passes through a ridge, the driving wheel on one side moves upwards to drive the swing arm on the side to swing upwards, and the swing arm on the other side is driven by the connecting frame to swing upwards, so that the driving wheels on the two sides swing synchronously, and the phenomenon that the driving wheels slip due to suspension in the moving process of the mobile robot is avoided; therefore, the occurrence of toppling accidents is avoided.

The invention relates to an on-board theodolite cabin self boarding and alighting structure, and belongs to the technical field of on-board theodolites. The on-board theodolite cabin self boarding andalighting structure is characterized in that the structure comprises a theodolite cabin, an on-board leveling platform and a chassis; the top surface of the chassis is provided with the on-board leveling platform, and the top surface of the on-board leveling platform is provided with the theodolite cabin; a theodolite body is arranged in the theodolite cabin, and the four corners of the theodolite cabin are provided with folding supporting structures correspondingly; and the folding supporting structures do not interfere and influence the on-board leveling platform; the chassis, a platform body, telescopic supporting legs and horizontal sensors are included; the platform body is arranged at the top of the chassis; the four corners, corresponding to the platform body, of the chassis are provided with connection flanges used for limiting moving of the platform body in the horizontal direction, and the two sides, corresponding to the platform body, of the chassis are each provided with two lock catches in a spaced mode. According to the on-board theodolite cabin self boarding and alighting structure, the problems that a traditional theodolite on-board structure is complex, and a lotof manpower and material resources need to be consumed are solved.

The invention relates to the technical field of building, in particular to a drill rod and a drill rig device. The drill rod comprises a telescopic drill rod body, a drill bit, a power head and a grouting hose. The power head is connected to the top end of the telescopic drill rod body, and the drill bit is connected to the bottom end of the telescopic drill rod body; the power head drives the telescopic drill rod body to extend and retract in the vertical direction to drill holes. One end of the grouting hose penetrates through the telescopic drill rod body to be connected with the drill bit, and the other end of the grouting hose is connected with a grouting device. The drill rig device comprises the drill rod, a drill rig column, a winding drum, a winding drum mounting rack and a trolley. The bottom end of the drill rig column is fixed onto the trolley, the winding drum mounting rack is fixed to the top end of the drill rig column, and the winding drum is mounted on the winding drum mounting rack. One end of the grouting hose is connected with the drill bit, the other end of the grouting hose is connected with the grouting device through the winding drum, and the grouting hose is laid on the winding drum. According to the drill rod and the drill rig device, the accident of rollover of the drill rig device is avoided, and meanwhile the working efficiency of grouting is improved.

The invention belongs to the technical field of nuclear power overhauling equipment, and particularly relates to a fixture for supporting seized main bolts of a pressure container. The fixture comprises bolt sleeves and inverted L-shaped fixture bodies, wherein the bolt sleeves are respectively in the shape of a cylinder of which the upper end face is closed; the bolt sleeves are respectively rotated into bolt holes adjacent to the seized main bolts for positioning; one end of each of the inverted L-shaped fixture bodies is fixedly arranged on a part, stretching out of the flange face of the pressure container, of the corresponding seized main bolt; the other end of each of the inverted L-shaped fixture bodies is fixedly on the corresponding bolt sleeve screwed into the bolt hole; contact faces between the inverted L-shaped fixture bodies and the corresponding to-be-cut seized main bolts are respectively a circular arc type hoop matched with the dimensions of the side wall of the main bolt; each of the contact faces is fastened with the fixture on the other side of the corresponding to-be-cut seized main bolt. According to the fixture, as each of the seized main bolts is supported and fixed in a way of being clamped on two sides, a collapse accident occurring in the course of cutting or at the end of cutting the seized main bolts of the pressure container is effectively avoided; therefore the safety of people and equipment is guaranteed.

The invention relates to an intelligent iron tower safety detector. The detector comprises a video camera, an inclination angle sensor, a wind speed sensor, first and second RS485 communication modules, an I / O module, an antenna, a wireless communication module and a central processor; the first RS485 communication module and the wind speed sensor are connected with a processing module of the inclination angle sensor, the central processor is connected with the video camera, the wireless communication module and the I / O module, and the second RS485 communication module is connected with the I / O module; the antenna is connected with the wireless communication module; the inclination angle sensor senses changes of an inclination angle of an iron tower, converts change of the inclination angle to an electric inclination-angle signal, and sends the electric inclination-angle signal to the first RS485 communication module; and the central processor encodes received video, wind-speed 485 and inclination angle 485 signals, superposes the coded signals with time information, and sends the superposed signals to a cloud server via a wireless communication module. The detector is high in automatic degree and reliability, low in utilization cost and can avoid overturning accidents of the communication iron tower effectively.

The invention relates to the technical field of transportation loading and unloading, particularly relates to a supporting mechanism and an operating vehicle with the supporting mechanism. The supporting mechanism comprises a connecting rod mechanism, namely one end of an erecting telescopic piece is hinged with a loading part of a vehicle, the other end of the erecting telescopic piece is hingedwith one end of a connecting rod, the other end of the connecting rod is connected with a rod body or a supporting end of the supporting leg, and one end, opposite to the supporting end, of the supporting leg is hinged with a frame. During work, the erecting telescopic piece stretches out and draws back, the hinged end of the erecting telescopic piece and the connecting rod moves in a strip-shapedlimiting structure to drive the supporting leg to swing, the swing angle of the supporting leg is controlled by controlling the movement distance of the erecting telescopic piece and the connecting rod in the strip-shaped limiting structure, and the erecting telescopic piece drives the loading part to rotate and dump after swing is completed. The structure is used for replacing an independent supporting leg swinging and rotating system and an independent loading and erecting system, the control and operation are simplified, the supporting leg swinging and rotating process and the loading anderecting process are coherent, the operation conversion time is saved, and the problem that a traditional supporting mechanism is complex in control and manipulation is solved.

The invention discloses a medical oxygen cylinder carrier convenient to load and unload. Two wheels are installed on the two sides of a vehicle frame, a clamping plate is rotationally installed at the front end of each of four arms, the rear sides of the four arms are rotationally connected with the back face of the vehicle frame, and a hydraulic cylinder extends to drive an ejector rod to move upwards; the first arm, the second arm, the third arm and the fourth arm are driven by the two chains to swing downwards at the same time, four clamping plates clamp an oxygen bottle, a pressure release valve is rotated to remove thrust of a hydraulic cylinder, a first spring and a second spring can pull an ejector rod to move downwards, the first arm, the second arm, the third arm and the fourth arm swing upwards at the same time, and the oxygen bottle is clamped by the four clamping plates. The rear end of the first supporting leg and the rear end of the second supporting leg are each provided with a universal trundle, the front ends of the first supporting leg and the second supporting leg and the frame form a rotating pair, and the angle positions of the first supporting leg and the second supporting leg can be locked through a first screw and a second screw respectively. The horizontal moving device is used for achieving horizontal moving of the carrier in the vertical state.

The invention provides an integrated carrier vehicle body of a theodolite carrier vehicle. The integrated carrier vehicle body of the theodolite carrier vehicle is characterized by comprising a chassis, a generator hoisting structure, an operation chamber, a vehicle-mounted leveling platform, a vehicle-mounted theodolite cabin and a flip cover structure of the vehicle-mounted theodolite cabin. Thehead of the chassis is provided with the generator hoisting structure, and the vehicle-mounted leveling platform is arranged at the tail end of the chassis. The vehicle-mounted theodolite cabin is erected on the top face of the vehicle-mounted leveling platform. The operation chamber for operating the theodolite body is arranged between the vehicle-mounted leveling platform and the generator hoisting structure. The integrated carrier vehicle body of the theodolite carrier vehicle effectively solves the problem that a traditional theodolite carrier vehicle is complicated in structure and needsto consume a large quantity of manpower and material resources.

The invention relates to a vehicle-mounted theodolite cabin for a theodolite carrier vehicle, and belongs to the technical field of theodolite carrier vehicles. The vehicle-mounted theodolite cabin ischaracterized by comprising a theodolite cabin body, an overturning cover structure and a chassis; the theodolite cabin body is arranged on the top face of the chassis, a theodolite body is arrangedin the theodolite cabin body, folding supporting structures are arranged at the four corner ends of the theodolite cabin body, the overturning cover structure is arranged at one end of the theodolitecabin body, and the folding supporting structures and the overturning cover structure do not interfere or affect; the vehicle-mounted theodolite cabin comprises a cabin body and a cabin cover; the cabin cover is arranged on the top of the cabin body, a drive wheel is arranged at one end of the bottom of the cabin body, and a steering wheel is arranged at the other end of the bottom of the cabin body; and the theodolite body is located at the middle position in the cabin body, and multiple transition connecting parts are evenly distributed on the side wall of the lower portion of the theodolitebody at intervals in a surrounding manner. The problems that a traditional theodolite carrier vehicle is complex in structure, and a large quantity of manpower and material resources need to be wasted are effectively solved.

The invention discloses a turnover type medical oxygen bottle carrier convenient to load and unload. Two wheels are installed on the two sides of a vehicle frame, two universal trundles are installed on the rear side of the vehicle frame, the front ends of four arms are each provided with a clamping plate, the rear sides of the four arms are all rotationally connected with an overturning frame, a first connecting rod is rotationally connected with a second arm and a fourth arm, and a second connecting rod is rotationally connected with a third arm and a fourth arm. The second connecting rod is rotatably connected with the first arm and the third arm, the turnover frame is rotatably connected with the frame, the hydraulic pipe communicates with the hydraulic pump and the hydraulic cylinder, the hydraulic cylinder can be stretched by stepping on the pedal, the first connecting rod and the second connecting rod are driven by the transverse groove rod to move upwards, and therefore the oxygen bottle is clamped by the four clamping plates, and the thrust of the hydraulic cylinder can be removed by stepping on the pressure release valve. A first spring and a second spring can pull a first connecting rod and a second connecting rod downwards, four clamping plates release the clamping of the oxygen bottle, a turnover frame swings forwards to enable two front supporting wheels to be in contact with the ground, at the moment, the clamping and releasing processes of the oxygen bottle are achieved, and the turnover frame swings backwards and is locked to achieve the transportation of the oxygen bottle.

The invention provides a mobile platform of automatic control equipment. The mobile platform comprises a limiting slot, a slide plate, a circular disc, a fixed ring, a tilting-prevention rope, a hanger, a circular ring, a through hole, a circular hole, a rotary disc and a rotary shaft, wherein the slide plate is arranged at the upper side of the limiting slot; the fixed ring is welded on the upperend surface of the slide plate; the circular disc is arranged at the left side of the fixed ring; the right end surface of the circular disc is assembled with the tilting-prevention rope; and the right end of the tilting-prevention rope passes through the fixed ring and is equipped with the hanger. The mobile platform realizes the linked tilting-prevention purpose; the circular hole is formed inthe right end surface inside the through hole, the left end of the rotary shaft is assembled on the left end surface inside the through hole, the right end of the rotary shaft passes through the circular hole and is mounted on the middle position of the left end surface of the rotary disc, and the circular ring is mounted at the left side of the ring-shaped side surface of the rotary shaft througha supporting rod, so that the purpose of clearing up the tilting-prevention rope is realized. The mobile platform is good in tilting-prevention measures, is convenient for clearing up the rope, is good in stability and is high in reliability.

The invention discloses a VR equipment suspension frame with a guiding wheel. One end of a transverse adjusting rod is movably hinged to the top end of a first longitudinal rod and fastened by a fastener. One end of a wire harness required by VR equipment penetrates through a second longitudinal rod and is connected with the terminal of the interior of the second longitudinal rod. The other end ofthe wire harness required by the VR equipment penetrates through a plurality of wire bunching rings, extends to the tail end of the transverse adjusting rod and is connected with the VR equipment. Atleast two supporting feet are arranged at the positions, towards the ground, of the outer wall of the second longitudinal rod in an extending mode. The supporting feet and the second longitudinal rodare connected through connecting rods. The bottom end of the second longitudinal rod is provided with a sucker. The interior of the sucker is filled with water or dinas. A penetrating hole is formedin the middle section of each supporting foot. A fixing cone can vertically penetrate through the penetrating holes and is drilled in the ground. An extending rotating shaft is further formed on the outer wall of the second longitudinal rod. A wire coil is arranged on the extending rotating shaft in a sleeving mode. One end of the wire harness is wound around the wire coil, extends to and penetrates through the second longitudinal rod and is connected with the terminal of the interior of the second longitudinal rod. The VR equipment suspension frame with the guiding wheel is simple in structure and convenient to use, can effectively guide and collate the wire harness of the VR equipment, and improves the cleanliness of a VR experience area.

The invention provides a lifting conveying device for cigarette making machine waste smoke. The lifting conveying device comprises a chain transmission mechanism, a guide rail mechanism and a main body rack. The lifting conveying device is characterized in that the main body rack is provided with the guide rail mechanism; the chain transmission mechanism is arranged in the main body rack and connected with the main body rack; the guide rail mechanism is connected with the main body rack through bolts and a bridge frame; the chain transmission mechanism comprises first chains, a scraper assembly, first chain wheels, a first chain wheel set, a second chain wheel set, a second chain, a motor, second chain wheels and a chain wheel; the scraper assembly is connected with the first chains through bolts. The lifting conveying device has the main advantages that a lifting channel is open; corner lifting is achieved through a large bevel angle of 110-160 degrees, and the situation that blocking and clamping faults appear at the bottom of the channel through the vertical lifting mode is avoided; the motor is arranged on the lower portion of the device, the gravity center is moved down, and the gravity center stability is ensured, so that toppling accidents of the device are avoided; the structural design is reasonable, maintenance is easy, and rapid assembling and disassembling of the device are achieved through blocks and large-diameter chain wheel holes.

The invention discloses a medical oxygen bottle carrier. Two wheels are installed on the two sides of a frame, a clamping plate is rotationally installed at the front end of each of four arms, the rear sides of the four arms are rotationally connected with the back face of the frame, a first connecting rod is rotationally connected with a second arm and a fourth arm, and a second connecting rod is rotationally connected with a first arm and a third arm. A hydraulic cylinder can drive a first connecting rod and a second connecting rod to move upwards through a transverse groove rod, clamping of an oxygen bottle is achieved through four clamping plates, thrust of the hydraulic cylinder can be relieved by rotating a pressure release valve, and therefore a first spring and a second spring can pull the first connecting rod and the second connecting rod downwards, so that the four clamping plates release clamping of the oxygen bottle. The rear end of the first supporting leg and the rear end of the second supporting leg are each provided with a universal trundle, the front ends of the first supporting leg and the second supporting leg and the vehicle frame form a rotating pair, the angle positions of the first supporting leg and the second supporting leg can be locked through the first screw and the second screw respectively, and two front supporting wheels are rotationally installed on the front side of the lower end of the vehicle frame and used for achieving translation of the carrying vehicle in the vertical state.

The invention belongs to the technical field of nuclear power overhauling equipment, and particularly relates to a fixture for supporting seized main bolts of a pressure container. The fixture comprises bolt sleeves and inverted L-shaped fixture bodies, wherein the bolt sleeves are respectively in the shape of a cylinder of which the upper end face is closed; the bolt sleeves are respectively rotated into bolt holes adjacent to the seized main bolts for positioning; one end of each of the inverted L-shaped fixture bodies is fixedly arranged on a part, stretching out of the flange face of the pressure container, of the corresponding seized main bolt; the other end of each of the inverted L-shaped fixture bodies is fixedly on the corresponding bolt sleeve screwed into the bolt hole; contact faces between the inverted L-shaped fixture bodies and the corresponding to-be-cut seized main bolts are respectively a circular arc type hoop matched with the dimensions of the side wall of the main bolt; each of the contact faces is fastened with the fixture on the other side of the corresponding to-be-cut seized main bolt. According to the fixture, as each of the seized main bolts is supported and fixed in a way of being clamped on two sides, a collapse accident occurring in the course of cutting or at the end of cutting the seized main bolts of the pressure container is effectively avoided; therefore the safety of people and equipment is guaranteed.

The invention discloses a duplex medical oxygen bottle carrier. Two wheels are installed on the two sides of a frame, three universal trundles are installed on the rear side of the frame, the front ends of four arms in each clamping mechanism are each provided with a clamping plate, the rear sides of the four arms in each clamping mechanism are rotationally connected with a turnover frame, a first connecting rod is rotationally connected with a second arm and a fourth arm, and a second connecting rod is rotationally connected with a third arm and a fourth arm. The second connecting rod is rotationally connected with the first arm and the third arm, the two clamping mechanisms are rotationally connected with the frame, the hydraulic pump communicates with the two hydraulic cylinders, the hydraulic cylinders can stretch by treading a pedal, a transverse groove rod drives the first connecting rod and the second connecting rod to move upwards, and therefore four clamping plates clamp the oxygen bottle; a pressure release valve is treaded to relieve thrust of a hydraulic cylinder, a first spring and a second spring pull a first connecting rod and a second connecting rod downwards, four clamping plates release clamping of the oxygen bottle, a clamping mechanism swings forwards to enable a front supporting wheel to make contact with the ground, and the process of clamping and releasing the oxygen bottle is achieved. After the clamping mechanism swings backwards and is locked, the oxygen bottle can be transferred.

The present invention is the construction process of laying wide bore pipe into pipe canal and relates to one important pipeline construction step. The present invention features that during excavating pipe canal, one soil partition wall is preserved in each certain distance; the pipe is first hoisted with two pipe layers and settled on the partition walls, and the initial end of the pipe is lifted before the soil partition wall is dug out with excavator and then settled slowly into the pipe canal; and all the partition walls are dug out successively and the pipes are settled in the pipe canal. The construction process includes the main steps of: preparation, the first pipe canal excavation, shifting pipes and detection, the second pipe canal excavation, and laying the pipes. The main advantages includes using two pipe layers only, low cost, low power consumption, simplified construction process, short construction period, etc.

The invention discloses a high-stability VR equipment suspension frame, The frame is characterized in that one end of a transverse adjusting rod is movably hinged to the top end of a first longitudinal rod and is fastened through a fastener, one end of a wire harness required by the VR equipment penetrates through a second longitudinal rod to be connected with the internal terminal of the second longitudinal rod, and the other end penetrates through a plurality of wire harness rings in sequence to extend to the tail end of the transverse adjusting rod and is connected with the VR equipment; atleast two supporting legs extending towards the ground are arranged on the outer wall of the second longitudinal rod, the supporting legs are connected with the second longitudinal rod through a connecting rod, a sucker is arranged at the bottom end of the second longitudinal rod, and a hollow cavity for containing the water or the gravel is formed inside the sucker; and through holes are formedin the middle sections of the supporting legs, and fixing cones can vertically penetrate through the through holes to be drilled into the ground. The high-stability VR equipment suspension frame is simple in structure and convenient to use, a long-wire harness of the VR equipment can be flexibly pulled, so that the stability during use can be greatly improved, and the occurrence of toppling accidents can be prevented.

The invention discloses an anti-static medical oxygen bottle carrier. Two wheels are installed on the two sides of a vehicle frame, each clamping plate is driven by a parallelogram structure composed of two arms, a first connecting rod, a first arm, a second arm, a fifth arm and a sixth arm form a rotating pair, a second connecting rod, a third arm, a fourth arm, a seventh arm and an eighth arm form a rotating pair. The hydraulic cylinder can drive the first connecting rod and the second connecting rod to move upwards, so that the four clamping plates clamp the oxygen bottle, the pressure relief valve is rotated to relieve the thrust of the hydraulic cylinder, and therefore the first spring and the second spring can pull the first connecting rod and the second connecting rod downwards, so that the four clamping plates release the clamping of the oxygen bottle; the rear end of the first supporting leg and the rear end of the second supporting leg are each provided with a universal trundle, the front ends of the first supporting leg and the second supporting leg and the vehicle frame form a rotating pair, the angle positions of the first supporting leg and the second supporting leg can be locked through the first screw and the second screw respectively, and two front supporting wheels are rotationally installed on the front side of the lower end of the vehicle frame and used for achieving translation of the carrying vehicle in the vertical state.

The invention discloses a toppling prevention device for a vending machine and relates to the technical field of vending machines. Tracks are arranged on the upper surfaces of cement bases and arranged in aluminum grooves, the aluminum grooves are inlaid in the cement bases, the heads of mounting screws are arranged in the aluminum grooves, mounting pressing pieces are arranged on the mounting screws in a penetrated mode, and nuts are connected to the mounting screws in a screwed mode; a plurality of ground mounting holes and a plurality of assembling holes are formed in each cement base; assembling beams are connected between the assembling holes of the two cement bases, and the assembling beams are fixed to the two cement bases through assembling screws and assembling spacers correspondingly. The toppling prevention device for the vending machine can effectively prevent the vending machine toppling accident caused by natural disasters such as an earthquake and strong wind, the safetyof personnel and equipment next to the vending machine is ensured, and the toppling prevention device is suitable for all the vending machines and other machine devices such as outdoor air conditioners and oiling machines.

The invention discloses a dumper hydraulic system comprising a hydraulic power unit, and a parking circuit, a hydraulic circuit, a control circuit and a positioning circuit which are controlled by the hydraulic power unit. The hydraulic power unit is used for supplying oil for a main oil circuit through a single oil pump, and the main oil circuit is connected to an electromagnetic relief valve for oil return; the main oil circuit is used for supplying oil to an oil cylinder of the parking circuit through an electro-hydraulic directional valve, dual hydraulic control check valves, a one-way throttle valve and a hydraulic control check valve; the main oil circuit is used for supplying the oil to the oil cylinder of the hydraulic circuit through the electro-hydraulic directional valve, the dual hydraulic control check valves, the one-way throttle valve and the hydraulic control check valve, and the oil pressure of the main oil circuit is reduced through a pilot-operated reducing valve; the main oil circuit is provided with two branches connected to electromagnetic directional valves separately and then connected to the hydraulic control check valves of the parking circuit and the hydraulic circuit to form the control circuit separately; and the oil pressure of the main oil circuit is adjusted through the electromagnetic directional valves, the dual hydraulic control check valves and the one-way throttle valve, and the main oil circuit is used for supplying the oil to a pin cylinder of the positioning circuit. The system is complete in functions and high in safety.

The invention relates to a modular aircraft comprehensive maintenance platform which comprises a chassis, a lifting module, a horizontal retracted module and an overhaul module, wherein the lifting module, the horizontal retracted module and the overhaul module which are sequentially assembled into a whole in a modular mode from bottom to top are mounted on the chassis. In this way, comprehensive maintenance such as the nondestructive testing, detection, cleaning and component disassembly and assembly on a whole and parts of the aircraft can be achieved, and the lifting module, the horizontal retracted module and the overhaul module are mounted on the chassis in a modular mode so that the lifting modules, the horizontal retracted modules and the overhaul modules of different specifications can be mounted according to the maintenance requirements, use flexibility is high, it is effectively guaranteed that the expensive aircraft is not collided in the maintenance process, and assembly and replacement are also convenient. Besides, a user can pull out and adjust the chassis according to the module assembling condition and the use condition to enhance the stability of the chassis, occurrence of dumping accidents is effectively avoided, using is flexible, safety is high, and when not used, the modular aircraft comprehensive maintenance platform can be retracted so as to reduce unnecessary space waste.

Two wheels are installed on the two sides of a vehicle frame, three universal trundles are installed on the rear side of the vehicle frame, each clamping plate is driven by one arm, two clamping mechanisms are rotationally connected with the vehicle frame, and communication of a hydraulic pump and two hydraulic cylinders is controlled through a reversing valve. The extension of the corresponding hydraulic cylinder can be realized by treading the pedal, so that the hydraulic cylinder can drive the first chain and the second chain to rotate through the ejector rod, four clamping plates in the corresponding clamping mechanism can clamp the oxygen bottle, the thrust of the corresponding hydraulic cylinder can be removed by treading the pressure release valve, and the first spring and the second spring can pull the ejector rod downwards, so that the oxygen bottle can be clamped. The four clamping plates release clamping of the oxygen bottle, the clamping mechanism swings forwards so that the front supporting wheel can make contact with the ground, the clamping mechanism is used for clamping and releasing the oxygen bottle, and the clamping mechanism swings backwards and is locked so that the oxygen bottle can be transferred.

The invention discloses an anti-collapse shed with alarming and automatic adjusting functions and an adjusting method, a stress area and a stress value measured in real time in a stress sensing device are transmitted to a central processing unit for analysis, and the stress area and the stress value are adjusted by adjusting the inclination angle between a shed frame and a roof under normal conditions. Accumulated snow on the car roof is uniformly distributed according to different heights of the car roof frames and different heights of the car roof frames, so that the stress of the car roof tends to be balanced and stable. Under an unconventional condition, automatic adjustment of the autonomous stress balance adjusting device is stopped, an alarm lamp of the forecasting and warning device is turned on, a buzzer gives out an alarm sound, and a wireless transceiver transmits an emergency signal to a monitoring and dispatching platform and terminal equipment of a user to remind the user to perform on-site emergency treatment. The problem that the shed collapses due to accumulation of a large amount of snow in rainy and snowy weather is solved, property and life health safety of the masses are guaranteed, and meanwhile feasible schemes and data are provided for intelligent city management targets.

The invention discloses a hoisting device for construction and belongs to the field of hoisting and transporting machinery. The hoisting device comprises a main machine of an all-angle hoisting machine, a rotating rack (1) and a bottom rack (2), wherein the main machine of the all-angle hoisting machine comprises a gear motor (3), a hoisting arm (4), and a hoisting steel wire rope device (5); the upper part of the rotating rack (1) is connected with the hoisting arm (4); the rotating rack (1) are movably mounted on a rotating shaft (2-3) through a pair of tapered bearings (11); the rotating shaft (2-3) are positioned at the bottom rack (2); the all-angle hoisting machine further comprises a mobile device and a locking screw set (10); the mobile device comprises a dovetail groove sliding rail (6), a dovetail sliding block (7) and a transmission screw pair (8); the dovetail groove sliding rail (6) is fixedly arranged on the ground. The all-angle hoisting machine can conveniently move along the dovetail groove sliding rail, the operation range of the hoisting machine in enlarged; the possibility of toppling accidents when the hoisting machine is overloaded is effectively prevented; the hoisting machine has a good market popularization value.