232results about How to "Play a role in safety protection" patented technology

The utility model relates to an air-floated magnetic motive frictionless suspending device, comprising a frame, a mounting case, a mobile beam, a plurality of guiding bars, a main rod, an air floatation system and a magnetic motive system, wherein, the air floatation system comprises two frictionless cylinders and two air storage tanks of same size; the magnetic motive system comprises a moving coil with a long stroke and the iron core of a exciter; the mounting case is fixed in the middle part of the frame, and a lower mounting plate is positioned in the lower part of the frame; a top plate and a bottom plate are positioned on the mounting plate; two small air bearings for installing the guide bars and a large air bearing for installing the main rod are positioned on the top plate; a large air bearing for installing the guide bars is positioned below the bottom plate; two frictionless cylinders are positioned symmetrically above the mounting plate under the frame; the cylinder rod of the frictionless cylinder is connected with the mobile beam with a connecting hinge; the mobile beam comprises two symmetric parts; the main rod and two guide bars are positioned on the mobile beam; two stop plates are positioned on the two ends of the main rod. The utility model has advantages of meeting the frequency criterion under ultra-low frequency condition, little enough added mass, the small influence of the nonlinearity, and the high testing precision.

The invention relates to a scissors-type accessible elevating platform, comprising a scissors-type machine frame, an elevating platform, a hydraulic cylinder elevating mechanism and an automatic plate-turnover mechanism. The scissors-type machine frame comprises a bottom frame, a scissors-type inside / outside arm support, an inclined-supporting track, a cam plate and an oil-cylinder roller wheel; the bottom end of the scissors-type inside / outside arm support is installed at the bottom frame, the inclined-supporting track is installed at the hinge position of the scissors-type inside / outside arm support, the cam plate is installed at the arm support and supports the oil-cylinder roller wheel, the oil-cylinder roller wheel is connected with a hydraulic cylinder. The hydraulic cylinder is installed at the upper end of the arm support, and the hydraulic cylinder rod is connected with the oil-cylinder roller wheel. The automatic plate-turnover mechanism comprises a plate-turnover oil cylinder, a plate-turnover oil cylinder support seat, a plate-turnover gas spring, a plate-turnover connecting strip, a plate-turnover connecting strip lug and a turnover plate; the rod of the plate-turnover oil cylinder is connected with the plate-turnover connecting strip and then is connected with the plate-turnover connecting strip lug, one end of the turnover plate is connected with the plate-turnover connecting strip lug, and the plate-turnover gas spring is connected with the turnover plate. The scissors-type accessible elevating platform is driven by hydraulic pressure, and the elevating is smooth and safe; the device is directly installed at the ground, and the pit which is matched with civil construction is not required, the construction is simple and convenient; the maintenance is simple and convenient, and the operation is simple.

The invention discloses an accelerated loading abrasion device for a pavement. The device comprises a housing, a support, a loading tire, a test piece tray, a pavement slab test piece, an oil pressure self-control loading device, a loading tire power system, a carborundum scattering device, a water film thickness control valve and a temperature adjusting system, wherein an instrument control panel is also arranged on the housing. With the adoption of the device, rotating and rolling actions of the tire on the pavement can be effectively simulated, and meanwhile, effects caused by the shearing force exerted on the pavement slab test piece by the tire on a curve on the pavement is also simulated.

The invention relates to a tear-resistant polyethylene film, a composite membrane and a preparation method thereof. The polyethylene film comprises a corona layer, a middle layer and a heat sealing layer, wherein the corona layer and the middle layer are each composed of first metallocene PE, octa-carbon LLDPE and processing aids, and the heat sealing layer is composed of the first metallocene PE, second metallocene PE, silicone, a slipping agent and an opening agent. The composite membrane is formed by a PET printing membrane layer, a first extruded PE membrane layer, an aluminum foil layer, a second extruded PE membrane layer and a polyethylene membrane layer which are sequentially fitted in the membrane layer thickness direction; the extruded PE membrane layer comprises a first adhesive layer in fit with the aluminum foil layer and a second adhesive layer in fit with the PET printing membrane layer or the polyethylene membrane layer, wherein the first adhesive layer is composed of third metallocene PE and adhesive resin, and the second adhesive layer is composed of the third metallocene PE and color master batch. The polyethylene film and the composite membrane disclosed by the invention have higher tear resistance strength. In addition, the composite membrane has excellent humidity resistance property.

The invention provides an atomizer. The atomizer comprises a cartridge, a base component detachably connected with the smoke bomb and an atomizer head arranged on the base component, the cartridge comprises a smoke flue in airflow communication with the atomizer head, and the cartridge is movably connected with the atomizer head in an axial direction; fluid communication between the cartridge andthe atomizer head is communicated or cut off by axial displacement, when the cartridge is in fluid communication with the atomizer head, the atomizer body protrudes from the smoke flue to make a usertake a cigarette. According to the atomizer, when the cartridge is separated with the base component, a drip tip can be retracted, and an exposed area of the drip tip can be reduced to decrease the possibility of bacterial infection. The invention further provides an electronic cigarette with the atomizer.

The invention discloses a comprehensive interference unit which comprises four interference frequency bands. Technical indexes of the comprehensive interference unit include that working frequencies of CDMA (code division multiple access) 800, CDMA1X and GSM (global system for communication) 900 modes range from 869MHz to 960MHz; the working frequency of a DCS (data communication system) -1800 mode ranges from 1805MHz to 1880MHz; the working frequency of a GPS (global positioning system) mode ranges from 1565MHz to 1585MHz; and working frequencies of TD-SCDMA (time division-synchronization code division multiple access), CDMA2000 and WCDMA (wideband code division multiple access) modes range from 2010MHz to 2045MHz and from 2110MHz to 2167MHz respectively. The interference unit is mainly used in a personal communication mobile phone and position finder, interferes in downlink data chains in the CDMA800, CDMA1X, CDMA2000, GSM900, DCS-1800, GPS, TD-SCDMA and WCDMA modes, and prevents communication and navigation equipment such as the personal mobile phone and a GPS from being tracked. The comprehensive interference unit forms an electric fence net by a specific electromagnetic spectrum in a small-scale place, the mobile phone cannot be connected with a base station, and information and data cannot be acquired, so that negative effects generated by the mobile phone are eliminated, and a safety protection effect is realized.

The invention provides an automatic cover-sliding door lock for intelligently identifying identity. The automatic cover-sliding door lock comprises a lock body and a lock core, wherein the lock body is embedded in a door; the lock core is arranged on the lock body; a first handle is arranged at the outer side of the lock body; a second handle is arranged at the outer side of the lock body; an unlocking area and a sliding cover are arranged on the outer side of the lock body; a driving motor used for driving the sliding cover to slide is connected with the sliding cover; the unlocking area can be opened or closed by sliding the sliding cover; a first locking mechanism used for locking the position of the sliding cover is arranged on the lock body; the first locking mechanism can be switched between the locking state and the unlocking state; when the first locking mechanism is under the locking state, the position of the sliding cover is locked and cannot slide; when the first locking mechanism is under the unlocking state, the sliding cover can freely slide. The automatic cover-sliding door lock for intelligently identifying identity provided by the invention can achieve the functions of protecting an identity verifying area from being opened by the stranger and more effectively protecting the safety.

The invention relates to a high-voltage switch cabinet of a transformer substation of a power system, and discloses a combination device for the infrared temperature measurement of the high-voltage switch cabinet. The combination device comprises an infrared imaging temperature measurer and an organic glass plate arranged on an observation window of the switch cabinet. The combination device is characterized in that: the organic glass plate is provided with a spherical universal joint which consists of a base and a sphere embedded into the base; through holes used for detection are sequentially reserved on the sphere, the base and the organic glass plate; and an emission barrel of the infrared imaging temperature measurer is inserted into the through hole of the sphere.

The invention relates to an electric tool control assembly. The electric tool control assembly comprises a driving component, a direct current switch, a control box and a key component, wherein the key component and the control box can be separated and connected, when the key component and the control box are connected, the key component has a first position and a second position on the control box, when the key component is located at the first position, the key component and the control box can be separated, when the key component is located at the second position, the key component and the control box can not be separated, the key component is operated so that the control box can be in an activated state, and the direct current switch can be closed by operating the driving component at the time. The electric tool control assembly adopts the key component to replace the functions of an electric key and an operation button in the prior art, and the key component can play a role in safety protection of the electric key in the prior art and can also achieve the function of the operation button in the starting process. Besides, when the key component is located at the second position, the key component can not be separated from the control box, and stable work of a machine is facilitated.

The invention discloses an intelligent schoolbag. The schoolbag comprises a schoolbag body, a schoolbag cover and two shoulder straps. The schoolbag body is of a three-layer structure including a first interlayer, a second interlayer and a third interlayer in sequence from back to front, the intelligent schoolbag is made of carbon fiber finely-kitted textile cloth, a damping sponge cushion is arranged at the back of the schoolbag body, a left spine protecting block and a right spine protecting block are further arranged on the left side and the right side of the damping spine cushion, GPS positioners are arranged at the middle positions of the upper ends of the two shoulder straps, an intelligent airbag is further arranged on the schoolbag cover, a lamp strip supplied with power through a battery is arranged on the outer side of the schoolbag cover, fluorescent reflecting bars are further arranged on the left side and the right side of the lamp strip respectively, and fluorescent reflecting bars are further arranged on the left side and the right side of the schoolbag body respectively. The intelligent schoolbag is simple in structure and reasonable and novel in design, has the effects of positioning, drowning preventing, earthquake preventing and vehicle warning and effectively improves the safety of students.

The invention provides an amphibious unmanned aerial vehicle with a balance weight posture adjusting mechanism. The unmanned aerial vehicle comprises a rack, an unmanned aerial vehicle body and spiralimpellers, the unmanned aerial vehicle body is arranged in the center of the rack, the spiral impellers are connected with the top end of the rack in a rotating mode, the spiral impellers are distributed on the periphery of the unmanned aerial vehicle body, and the spiral impellers are electrically connected with the unmanned aerial vehicle body. The amphibious unmanned aerial vehicle comprises the balance weight posture adjusting mechanism and a landing protection mechanism, the balance weight posture adjusting mechanism is located below the unmanned aerial vehicle body, one end of the landing protection mechanism is connected with the rack, and the other end of the landing protection mechanism is connected with the balance weight posture adjusting mechanism. The balance weight posture adjusting mechanism, the landing protection mechanism and the unmanned aerial vehicle body are electrically connected. According to the amphibious unmanned aerial vehicle with the balance weight posture adjusting mechanism, the flight posture of the unmanned aerial vehicle can be adjusted through the balance weight effect, and it is guaranteed that the amphibious unmanned aerial vehicle stably operates according to a set route; besides, no matter whether the landing place is the water surface or the land, the surrounding environment can be recognized in real time, and the purpose of stable landing is achieved.

The invention discloses a retarding gas chlorine dioxide solid generating preparation, comprising the following components in parts by weight: 30-100 parts of chlorite of which the purity is 80%, 20-30 parts of ascorbic acid or sodium salt derivative, 5-20 parts of pH modifier, and 5-10 parts of embedding medium. The method comprises the steps of dissolving 30-100 parts of sodium chlorite into 100-300 parts of water solution in advance, adding 5-20 parts of pH modulator and evenly agitating; pelletizing 20-30 parts of ascorbic acid or sodium ascorbate by a wet process; and feeding 5-10 parts of embedding medium into a coating pan to coat, feeding coating granules prepared in advance into the solution, lightly oscillating to evenly disperse at the same time, and generating gas chlorine dioxide after 18-600 seconds. The retarding gas chlorine dioxide solid generating preparation is simple in preparation technology, strong in operability, low in price, good in stability, and convenient to store and transport and use, and can effectively ensure the safety of operating personnel.

The invention discloses a test device for the conduit burst pressure under static conditions and a working method thereof and belongs to the technical field of medical apparatus detection. The test device includes a body, wherein the body is internally provided with a pressure device container, one end of the pressure device container is in sliding connection with a liquid push device, the other end of the pressure device container is provided with a liquid inlet and a liquid outlet, the liquid outlet is communicated with a conduit interface, a ball screw transmission mechanism is formed between the liquid push device and a driving device, one end opposite to the driving device is provided with a constant temperature water bath tank and a water pipeline, a liquid outlet pipe is internallyprovided with a pressure sensor, the driving device is provided with a controller, and the pressure sensor is connected with a controller of the driving device. The invention further discloses the working method of the test device. The test device is advantaged in that the fluid with the stable rate is supplied into the conduit, the conduit is guaranteed to be in the constant temperature environment, and test requirement in accord with the industrial standards is met.

The invention discloses a cutting, drilling and grinding mechanism. The cutting, drilling and grinding mechanism comprises a cutting main body, wherein a transmission cavity is arranged inside the cutting main body; transmission shafts which upwards extend to penetrate through the top end surface of the cutting main body are symmetrically and rotatably mounted in the bottom wall of the transmission cavity left and right; cross-shaped groove interfaces are fixedly mounted on the top end surface of the left and right transmission shafts; a first belt wheel is fixedly mounted on the left one of the left and right transmission shafts; a first motor is fixedly mounted on the bottom end surface of the cutting main body; the top end surface of the upward output shaft of the first motor is fixedlyequipped with a power shaft; a second belt wheel is fixedly mounted on the power shaft; the position, on the power shaft, of the upper side of the top end surface of the second belt wheel is fixedlyequipped with a third belt wheel; a fourth belt wheel is fixedly mounted on the transmission shaft; a first transmission belt is rotatably mounted between the first belt wheel and the second belt wheel in a matched mode; and a second transmission belt is rotatably mounted between the fourth belt wheel and the third belt wheel in the matched mode.

The invention provides a smoke cartridge. The smoke cartridge comprises a liquid storage tube, a liquid outlet mechanism, an elastic part and a first magnetic part, wherein the elastic part and the first magnetic part are stored in the liquid outlet mechanism which is arranged on the liquid storage tube. The liquid storage tube is provided with a liquid storage cavity, the liquid outlet mechanism is provided with liquid guide holes communicated with the liquid storage cavity, and the smoke cartridge is further provided with a liquid outlet hole communicated with the liquid guide holes. The first magnetic part is slidably stored in the liquid outlet mechanism, one end of the elastic part is elastically abutted against the inner wall of the liquid outlet mechanism, the other end of the elastic part is elastically abutted against the first magnetic part, and the first magnetic part is capable of closing the liquid guide holes under the action of the elastic part. When the smoke cartridge is stored independently, the liquid guide holes are closed by the first magnetic part under the elastic force, so that smoke liquid leakage is avoided, and safety of children is protected to some extent.

The invention discloses an improved cutting, drilling and grinding mechanism which comprises a cutting main body; the cutting main body is internally provided with a transmission cavity; the bottom wall of the transmission cavity is rotationally provided with transmission shafts which extend upward and penetrate through the end surface of the top of the cutting main body inside in a bilateral symmetry manner; the end surfaces of the tops of the left transmission shaft and the right transmission shaft are fixedly provided with cruciform groove connections respectively; the left side shafts of the left transmission shaft and the right transmission shaft are fixedly provided with first belt pulleys respectively; the end surface of the bottom of the cutting main body is fixedly provided with afirst motor; the end surface of the top of an upward output shaft of the first motor is fixedly provided with a power shaft; the power shaft is fixedly provided with a second belt pulley; the position, on the upper side of the end surface of the top of the second belt pulley and on the power shaft, is fixedly provided with a third belt pulley; the transmission shaft is fixedly provided with a fourth belt pulley; and a first transmission belt is rotationally installed between the first belt pulley and he second belt pulley in a matching manner.

The invention discloses a protection device for a mining dump truck rear-axle test bed. The protection device is characterized by comprising a left protection cover assembly and a right protection cover assembly which are arranged symmetrically, wherein each protection cover assembly consists of a protection cover framework and a protection net arranged on the framework; a lower beam of the framework is connected with a base in a slidable manner through a sliding component sleeved on the base; the base is fixedly connected with a test bed base; and a limiting structure is arranged between theframework and the base in a matched manner. By arranging the left protection cover assembly and the right protection cover assembly which are connected with the base in a slidable manner through the sliding component, the protection device can translate in a slidable manner and turn relative to the base so as to effectively exert the function of protecting the safety of the test bed and avoid accidents.

The invention discloses a foldable sofa bed. The foldable sofa bed comprises a sofa seat and a foldable bed, and also comprises an overturning mechanism, wherein one end of the foldable bed is hinged onto two side parts of the sofa seat by virtue of the overturning mechanism and is overturned around a hinge point to enter a storage cavity of the sofa seat. The action process for transforming the sofa bed to a sofa is completed coherently in one step; and the foldable sofa bed is convenient and easy to operate.

The invention provides a slope protection single body, an ecological protection slope and an assembling method of the ecological protection slope, and belongs to the technical field of ecological energy protection slopes. The slope protection single body comprises a first frame body and a first partition plate, wherein the first frame body is provided with a first containing cavity, the first partition plate is arranged in the first containing cavity, thus the first containing cavity is partitioned into a first vegetation area and a first power generation area, the first vegetation area is used for arranging vegetation units, and the first power generation area is used for arranging vibration power generation units. The slope protection single body has the technical effects that the firstvegetation area is used for arranging the vegetation units, the first power generation area is used for arranging the vibration power generation units, the vibration phenomenon of a side slope due topassing of vehicles in most of time is utilized, mechanical energy generated by vibration is converted into electric energy, thus the advantages of the side slope are utilized to a greater extent, thepower generation effect can be achieved while the safety protection effect is achieved, slope protection single body has the characteristic of increasing the natural resource utilization rate, and the effects of economy, environmental protection and high utilization rate are achieved.

The invention discloses an electromagnetic shielding telescopic structure and an installation method thereof. The structure includes two vertical columns installed on two sides of an expansion joint on a fixed base. A lower shielding plate, a middle shielding plate and an upper shielding plate which are made of elastic materials and have the function of electromagnetic shielding are orderly installed between the two vertical columns, the lower shielding plate is installed on the expansion joint of the fixed base and is fixedly connected to the middle shielding plate through a front shielding pressing strip and is fixedly connected to the solid base through a back shielding pressing strip, and the middle shielding plate and the upper shielding plate are connected by rivets to form a telescopic shielding unit. According to the electromagnetic shielding telescopic structure, the horizontal cross-section shapes of the lower shielding plate, the middle shielding plate and the upper shielding plate are stretched Pi shapes, the shielding plates can be installed adaptively according to the sizes of different expansion joints during installation, and the versatility is high. According to different requirements, holes can be made in the middle shielding plate and the upper shielding plate to reduce a structural weight and air resistance.

The invention discloses a novel cloth wind-up device which comprises a base and a box body arranged on one side above the base. The device further comprises a rotating mechanism, a bent plate expansion and retraction mechanism and a guide mechanism. A sliding shaft on the bent plate expansion and retraction mechanism controls four sets of bent plates to be retracted and expanded, so that the cloth wind-up start state and the cloth wind-up end state are easily switched, the production efficiency is higher, and the device is applicable to continuous operation. The guide mechanism is located on the other side of the bent plate expansion and retraction mechanism and comprises a guide rod box and a guide rod. A lead screw is arranged in the guide rod box. The bottom of the guide rod is movably connected with the lead screw. The guide rod does reciprocating motion on the lead screw during forward and reverse rotation of the lead screw. The lead screw is driven by a motor. According to the technical scheme, reciprocating motion of the guide rod is ensured, the cloth wind-up working coordination is improved, continuous operation is achieved, and the production efficiency is improved.

The invention provides a smoke cartridge. The smoke cartridge comprises a liquid storage pipe, a liquid outlet mechanism arranged on the liquid storage pipe, a first magnetic part fixedly arranged on the liquid outlet mechanism and a second magnetic part which is accommodated in the liquid outlet mechanism in a sliding manner, wherein a liquid storage cavity is formed in the liquid storage pipe; a liquid draining hole is formed in the liquid outlet mechanism and is communicated with the liquid storage cavity; a liquid outlet is formed in the smoke cartridge and is communicated with the liquid draining hole; the first magnetic part and the second magnetic part are arranged in a mutually repulsive manner, and the second magnetic part can be used for closing the liquid draining hole under the exclusive effect of the first magnetic part. When the smoke cartridge is stored independently, the liquid draining hole is closed by the second magnetic part due to the effect of the repulsive force, so that smoke liquid leakage is avoided, and a certain safety protection effect is realized for children.

The invention discloses an accelerated loading abrasion device for a pavement. The device comprises a housing, a support, a loading tire, a test piece tray, a pavement slab test piece, an oil pressure self-control loading device, a loading tire power system, a carborundum scattering device, a water film thickness control valve and a temperature adjusting system, wherein an instrument control panel is also arranged on the housing. With the adoption of the device, rotating and rolling actions of the tire on the pavement can be effectively simulated, and meanwhile, effects caused by the shearing force exerted on the pavement slab test piece by the tire on a curve on the pavement is also simulated.

The invention relates to an automatic centrifuge rotor state recognition system which comprises a single chip microcomputer, an Hall sensor, a sensor bracket, a magnetic steel component and an alarm component, wherein the single chip microcomputer is connected with each of the Hall sensor and the alarm component; the magnetic steel component is fixed at the bottom of the rotor and rotates along with the rotor; the sensor bracket is arranged below the rotor; the Hall sensor is arranged on the sensor bracket; the rotor drives the magnetic steel component to rotate; the Hall sensor emits high / low level signals according to the magnetic steel component and transmits the high / low level signals to the single chip microcomputer; the single chip microcomputer is used for recognizing the rotor according to the received signals and used for transmitting alarm signals to the alarm component according to the recognition result; the alarm component is used for making alarm according to the alarm signals. Compared with the prior art, the automatic centrifuge rotor state recognition system can recognize the rotor, so that the security of the whole machine is improved, and besides, an operator can master the expected service life of the rotor, and thus the rotor can be replaced or continuously used.

The invention provides a road center fence capable of toppling over safely. The road center fence comprises a plurality of bases and barrier grid assemblies arranged between every two adjacent bases, each barrier grid assembly comprises two stand columns and barrier grid units arranged between the two stand columns, and adjacent stand columns of every two adjacent barrier grid assemblies are arranged on the same base. The road center fence further comprises steel blocks and pin shafts, the bottoms of the steel blocks are fixedly connected with the corresponding bases, the lower ends of the adjacent stand columns of every two adjacent barrier grid assemblies are arranged between two corresponding steel blocks, arc-shaped grooves are formed in the contact surfaces of the stand columns and the corresponding steel blocks, arc-shaped protrusions matched with the arc-shaped grooves in a clamped mode are formed in the steel blocks, and each pin shaft penetrates through two corresponding steel blocks to connect the steel blocks and the corresponding stand columns. The stability of the road center fence can be guaranteed; when a vehicle collides with the road center fence, the adjacent stand columns rotate to be staggered so that a single barrier grid assembly can topple over safely, the situation that several barrier grid assemblies topple over at the same time, fly to a lane in the opposite direction and cause secondary traffic accidents is avoided, the safety protection effect is achieved, and the traffic safety and traffic efficiency of urban roads are guaranteed.

The invention discloses a movable safety door lock. The movable safety door lock consists of a locking device and a locking fastener, wherein the lower end of a supporting plate of the locking fastener is a buckle part which is bent in a right angle shape, an elongated tenon protruding out of the back surface of the supporting plate is connected with a tongue-and-groove in one side of the locking device in a sliding manner, two ends of a swinging arm of the locking device are connected with a brake rod and the supporting plate of the lock fastener, the brake rod is connected with a small ratchet wheel which is coaxially integrated with a large ratchet wheel, an unlocking shaft axially penetrates through a shell to be buckled with the large ratchet wheel, a ringing bell is arranged in an alarming cavity below a baffle plate, and a lock pin of the locking device is obliquely arranged below the shell. The movable safety door lock does not need to be fixedly installed on a door body, the door body is inverted to be locked, a door opening warning effect and an antitheft effect can be realized, and the movable safety door lock can be carried along to be used when in travel.

The invention relates to a head-mounted display device managing and controlling method based on program leasing. The method comprises the following steps: a management and control program is configured for a head-mounted display device; before a user inputs a top-up amount and passes unlocking verification of the management and control program, usage of the head-mounted display device is continuously limited via the management and control program, and the head-mounted display device is in a locked screen state; after the user inputs the top-up amount and passes the unlocking verification of the management and control program, usage of the head-mounted display device is allowed via the management and control program, and the head-mounted display device is in an unlock state; the top-up amount is deducted according to accumulated time and / or the top-up amount is deducted according to payment amounts corresponding to pay items via the management and control program; limitation on usage of the head-mounted display device is recovered when balance is less than a preset limit amount, and the head-mounted display device is back into the locked screen state. Via application of the head-mounted display device managing and controlling method, effective lease management and control of the head-mounted display device can be realized, and safety protection effects can be exerted.

The invention provides pile position protection and pile casing safety protection equipment for a cast-in-place pile. The pile position protection and pile casing safety protection equipment for the cast-in-place pile comprises four positioning rods, a pile casing, a protective ring, a warning mark and two elastic ropes. The four positioning rods are distributed around the pile casing in a cross-shaped mode. The bottom of each positioning rod is a pointed end. A clamping groove is formed above the pointed end of each positioning rod. Two U-shaped clamps are arranged above each clamping groove. A standard bubble is arranged above the U-shaped clamps of each positioning rod. Clamping buckles are arranged at the two ends of each elastic rope correspondingly and matched with the corresponding clamping grooves. Each elastic rope is located between the two positioning rods in the bidiagonal positions. The clamping buckles at the two ends of each elastic rope are embedded in the corresponding clamping grooves in a matched mode correspondingly. The protective ring is made of stainless steel and fixed to the positioning rods through the U-shaped clamps. The warning mark is fixed to the upper portion of the protective ring through a magnet. By the adoption of the pile position protection and pile casing safety protection equipment for the cast-in-place pile, a pile position can be protected comprehensively, a safety protection function can be achieved through the warning mark while the pile position is protected, installation and maintenance are convenient, the equipment can be used repeatedly, and cost is reduced.

The invention relates to a scissors-type accessible elevating platform, comprising a scissors-type machine frame, an elevating platform, a hydraulic cylinder elevating mechanism and an automatic plate-turnover mechanism. The scissors-type machine frame comprises a bottom frame, a scissors-type inside / outside arm support, an inclined-supporting track, a cam plate and an oil-cylinder roller wheel; the bottom end of the scissors-type inside / outside arm support is installed at the bottom frame, the inclined-supporting track is installed at the hinge position of the scissors-type inside / outside arm support, the cam plate is installed at the arm support and supports the oil-cylinder roller wheel, the oil-cylinder roller wheel is connected with a hydraulic cylinder. The hydraulic cylinder is installed at the upper end of the arm support, and the hydraulic cylinder rod is connected with the oil-cylinder roller wheel. The automatic plate-turnover mechanism comprises a plate-turnover oil cylinder, a plate-turnover oil cylinder support seat, a plate-turnover gas spring, a plate-turnover connecting strip, a plate-turnover connecting strip lug and a turnover plate; the rod of the plate-turnover oil cylinder is connected with the plate-turnover connecting strip and then is connected with the plate-turnover connecting strip lug, one end of the turnover plate is connected with the plate-turnover connecting strip lug, and the plate-turnover gas spring is connected with the turnover plate. The scissors-type accessible elevating platform is driven by hydraulic pressure, and the elevating is smooth and safe; the device is directly installed at the ground, and the pit which is matched with civil construction is not required, the construction is simple and convenient; the maintenance is simple and convenient, and the operation is simple.