97results about How to "Adjust up and down position" patented technology

The invention provides a pressure adjusting structure comprising a valve seat, an exhaust tube and a magnetic valve body. The lower end of the exhausting tube passes through the valve seat; the magnetic valve body sleeves the upper end port of the exhausting tube; a magnetic cushion block is arranged between the valve seat and the magnetic valve body; and the magnetic cushion block is connected with the valve seat via a magnetic cushion block adjusting structure adjusting up-down positions of the magnetic cushion block. When a pressure limiting value of a pressure-limiting valve has to be adjusted, the up-down positions of the magnetic cushion block is adjusted by the magnetic cushion block adjusting structure, so a distance from the magnetic gasket to the magnetic valve body can be changed; when the distance changes, magnetic field force between the magnetic cushion block and the magnetic valve body can be changed; the pressure limiting value of the pressure limiting valve is the self weight of the magnetic valve body and the magnetic field force between the pressure limiting valve and the magnetic valve body; the pressure limiting value of the pressure limiting valve can be adjusted and food cooking effect of the pressure cooker can be improved; meanwhile, the use of elastic components such as springs can be avoided in the adjusting structure, so fewer components are required; and the pressure adjusting structure is simply structured, convenient to assembly and has high reliability.

The invention discloses a head solid locator, belonging to a technical field of medical machinery which includes a bracket, the upper surface of which is provided with a pair of lead rails arranged in parallel along the horizontal direction, a head fixing device which is used for confirming a head scanning datum layer surface and leading the scanning datum layer surface to be vertical to the horizontal upper lead rails, and is arranged on the front side between the two horizontal upper lead rails, one locating device which includes a door-shaped bracket and two lower ends of two upright posts of the door-shaped bracket are provided with an articulating device which can lead the door-shaped bracket to rotate along an X-shaft direction. The lower end of the articulating device is connected with a slide block arranged on the upper lead rails. A cross beam at the upper end of the door-shaped bracket is provided with a puncturing device which can slide along the cross beam. The invention solves the defect that the head locating device in the prior art can not realize 3D rotation and moving and has the advantages of simple structure and accurate location.

The invention discloses a transmission roller gap adjustment device, which comprises a bottom bracket, an upper pressure wheel, a lower roller, a U-shaped frame, a pressure plate, an adjusting screw, a fixed bearing seat, a movable bearing seat, and a spring. U-shaped frames are arranged on both sides of the bottom bracket, There is a U-shaped groove in the U-shaped frame, a pressure plate on the top, a fixed bearing seat on the bottom of the U-shaped groove, two positioning terminals on the upper end of the fixed bearing seat, a spring on the positioning terminal, a movable bearing seat on the spring, and a screw on the pressure plate. Hole 1 and screw hole 1 are provided with an adjusting screw rod, and the fixed bearing seat is provided with bearing hole 2, which is connected with the rolling bearing 2 on the shaft end 2 at both ends of the lower roller. The ball bearings on the shaft ends at both ends of the upper pressure wheel are connected, and four flat pads are arranged on the outside of the U-shaped groove, and the flat pads are connected to the U-shaped groove with fastening screws. The gap between the lower roller and the adjustment distance is controlled by a scale, which is suitable for conveying fabrics of different thicknesses.

The invention provides an adjustable mounting structure for an arc-shaped assembly-type suspended ceiling. The adjustable mounting structure comprises a top face base layer; an arc-shaped veneer is mounted on the top face base layer, a plurality of adjusting mechanisms are arranged between the arc-shaped veneer and the top face base layer, and each adjusting mechanism comprises a first ceiling rod, a second ceiling rod and one or more adjusting components; and the first ceiling rod is fixedly connected to the top face base layer, the bottom of the first ceiling rod is connected with a sleeve,the second ceiling rod is connected to the other end of the sleeve, the other opposite end of the second ceiling rod is connected to the arc-shaped veneer, the adjusting components each comprise an adjusting rod and a connecting rod, and one ends of the adjusting rods are connected to the sleeve, the other ends of the adjusting rods are rotationally connected with the connecting rods, and the other ends of the connecting rods are connected to the arc-shaped veneer. Fine adjustment operation in the mounting process of a arc-shaped top facing can be achieved, and then the mounting precision is improved.

The invention relates to protection devices for building construction and particularly relates to an environment protection device for building construction. A technical problem to be solved by the invention is to provide the environment protection device for building construction which is timesaving and laborsaving and is good in dust falling effect and wide in spraying range. In order to solve the above-mentioned technical problem, the environment protection device for building construction, provided by the invention, comprises a bottom plate and the like, wherein a moving device is arrangedon the bottom plate, supporting legs are mounted at the top of the bottom plate in bilateral symmetry in a bolted manner, a top plate is horizontally connected to the tops of the supporting legs in abolted manner and is provided with a water spraying device, a supporting rod is vertically connected to the middle of the top of the top plate in a bolted manner, and a water spraying component of the water spraying device is located at the top of the top plate. According to the environment protection device for building construction, provided by the invention, through sliding fit between a sleeve and the supporting rod, the vertical position of a sprayer can be very conveniently adjusted, and then, the range of water spraying of the sprayer is adjusted, so that the dust falling effect is better, and the effects of good dust falling effect and wide spraying range are achieved.

The invention discloses a transplanter with mechanical arms and an application thereof, and relates to the technical field of agricultural planting machinery. The transplanter comprises a seedling releasing barrel, two sides of the seedling releasing barrel are respectively fixedly connected with a fixed rod, the front face of the fixed rod far from one end of the seedling releasing barrel is movably connected with a first movable rod through a first pin shaft, one end of the first movable rod is fixedly connected with the side face of a half-pointed barrel, and the upper surface of the half-pointed barrel is overlapped with the lower surface of the seedling releasing barrel. According to the transplanter with mechanical arms and the application thereof, the soil covering is completed by moving the soil on both sides of seedling inward with a soil-moving plate through the arrangement of two first fixing blocks, two vertical bars, two pulleys, two movable arms, two second fixing blocks,two fourth pin shaft, two first connecting rods, two second electric push rods, two second connecting rods, two movable plates and two first sliding chutes, and the soil on the outer side of seedlingis covered again without employment of people to specifically complete the soil covering process, thereby saving people's time and enabling the application of the whole transplanter to be more convenient.

The invention provides an orthopaedic splint mounting and fastening device, and relates to the technical fields of mounting and fastening of orthopaedic splints. The orthopaedic splint mounting and fastening device comprises bottom supports, wherein a Chinese character kou-shaped support frames are fixedly connected to the top ends of the bottom supports, and first sliding chutes are formed in theinner walls of the Chinese character kou-shaped support frames; and first sliding blocks are connected in the first sliding chutes in a sliding manner, and external thread shafts are connected in thefirst sliding blocks in a sliding manner. The orthopaedic splint mounting and fastening device has the beneficial effects that when clamping mechanisms need to be subjected to lifting regulation, thedevice can be started through an external power supply of a servo motor, the external thread shafts connected with the clamping mechanisms can rotate along inner rings of first bearings, and the first sliding blocks connected between the external thread shafts through threads can slide up and down on the first sliding chutes formed in the inner walls of the Chinese character kou-shaped support frames, so that up-down positions of fastening mechanisms and connecting fastening mechanisms can be advantageously adjusted, and the adjustment can be advantageously realized through the cooperation with the change of a lifted position of an arc-shaped support plate of a lifting adjusting mechanism.

The invention discloses an efficient heat dissipation gear speed reducer. The efficient heat dissipation gear speed reducer comprises a gear speed reducer body; a large gear and a small gear are arranged in the gear speed reducer body, and are engaged with each other; one side of the large gear is fixedly connected with an output shaft; the output shaft penetrates through the gear speed reducer body; the other side of the large gear is fixedly connected with a connecting shaft A; and one side of the small gear is fixedly connected with an input shaft. As the gear speed reducer body is effectively cooled, efficient work of the gear speed reducer body is guaranteed; a heat dissipation device is arranged at the lower end of a gear speed reducer mounting box without exposing outside, so that the heat dissipation device is not easy to be corroded by natural environment, the service life of the heat dissipation device is prolonged, and the maintenance cost is reduced; a slide rod is provided, and the position of a heat dissipation fan can be adjusted on the slide rod, so that heat dissipation in one area can be guaranteed, and the heat dissipation efficiency is preferably guaranteed; andthe up-down position of the slide rod is conveniently adjusted, so that the heat dissipation area can be adjusted, and excellent heat dissipation effect is guaranteed.

The invention relates to the technical field of elevator manufacturing, in particular to an integration device of a gantry crane and a top of a lift car, comprising a lift car, the gantry crane and a lift car door. The integration device is characterized in that a connecting piece is fixedly connected with the top of the lift car; the gantry crane is in rigid connection with the top of the lift car through the connecting piece; and the upper end of the lift car door is connected with the gantry crane, and hung on a pedal of a car platform of the lift car. The device is beneficial to improving the installation precision of the lift car door, reducing the vibration of the lift car door when the elevator runs, and has the advantages of convenient installation and adjustment and good use effect.

The invention relates to a back-mounted tool which comprises a backplate for carrying articles and shoulder straps fixed on the backplate. Fixing straps for fixing the articles on the backplate are arranged on the backplate. By adopting the back-mounted tool, the articles are carried through the backplate which is open and fixed on the same through the fixing straps to replace conventional closed article carrying modes adopting article carrying bags or boxes. The back-mounted tool can carry and fix articles different in shape, size and weight, and the backplate belongs to an open article carrying platform with broad space and is matched with the fixing straps for use, so that the back-mounted tool is simple in structure, quite extensive in type of articles which can be carried and extremely high in applicability.

The invention relates to a double front axle vehicle steering axle side-slipping detecting device. The device comprises a rack and slipping tables. The rack is a framework-shaped structure. Two ends of the rack are respectively provided with an optoelectronic switch. The slipping table is divided into a front one and a back one. The two slipping tables are respectively arranged in the rack. A plurality of slipping mechanisms are arranged below each slipping table. A middle cover plate is arranged on the middle of the front slipping table and the back slipping table. A lever mechanism is arranged on the lower portion of the middle cover plate. A displacement sensor is arranged below the middle cover plate. A signal transmission device can be used for transmitting signals of the displacement sensor to a control circuit and a circumscribed appliance. An oscillating bar is arranged below the middle cover plate. The oscillating bar is connected with a spring. The spring is also fixed on a tension spring fixing seat. The tension spring fixing seat is fixed on a support plate. The above structure is used by the double front axle vehicle steering axle side-slipping detecting device. The slipping mechanism is matched with the displacement sensor to detect the sideslip of the wheels so that the vehicle steering axle side-slip can be detected effectively and accurately. The traffic accidents that are because the wheel location is not very good can be reduced. The traffic safety can be guaranteed.

The invention discloses improved protective film winding equipment. The improved protective film winding equipment comprises universal wheels with brake pads, a movable base, a push rod, a push handle, a skidproof sleeve, a first rectangular through groove, a first supporting column, a second rectangular through groove, a second supporting column, a driving gear, a driving motor, a machine base, an adjustable rotary protective film leveling plate structure, an adjustable protective film storage roller structure and a protective film outer surface dust cleaning auxiliary roller structure, wherein the universal wheels with brake pads are respectively mounted at positions of four corners of the bottom of the movable base through bolts. According to the improved protective film winding equipment disclosed by the invention, a leveling plate main body is arranged, achieving a favorable protective film leveling function is facilitated, so that levelness during storing protective films is guaranteed; and a supporting rod, a rotating rod, linkage pipes, hollow sliding seats and wing-shaped screws are arranged, so that adjusting the up-and-down position of the leveling plate main body according to leveling requirement is facilitated, and the levelness is guaranteed.

The invention discloses a high-speed automatic tucker for an industrial sewing machine. The high-speed automatic tucker adopts the structure that a pinion is fixedly arranged on a transmission shaft; a gearwheel meshed with the pinion is arranged above the pinion, and is fixedly arranged on a first shaft; adjusting eccentric wheels (namely a first adjusting eccentric wheel and a second adjusting eccentric wheel) are fixedly arranged at the tail ends of both the first shaft and the transmission shaft respectively; the first adjusting eccentric wheel is connected to the bottom end of a steering crank through a first eccentric connecting rod; the second adjusting eccentric wheel is connected to a swinging frame connecting rod through a second eccentric connecting rod; the top end of the swinging frame connecting rod is fixedly arranged on a second shaft; the steering crank sleeves the second shaft in a rotatable manner; a shovel piece mounting shaft connecting column sleeves the bottom of the swinging frame connecting rod in a rotatable manner; a shovel piece mounting shaft is fixedly arranged at one end of the shovel piece mounting shaft connecting column; a feeding shovel piece is mounted on the shovel piece mounting shaft; the other end of the shovel piece mounting shaft connecting column is connected to the top end of the steering crank through a connecting rod. The high-speed automatic tucker can be mounted on the industrial sewing machine, can use a motor of the sewing machine as a power source, and can utilize double spring shovel pieces to closely clamp a fabric to realize material feeding of a presser foot, so that the pleating stability, the sewing efficiency and the sewing speed are improved.

The invention provides a quick stripping device applicable to power cables with different thickness specifications, relates to the technical field of cable-related equipment and is to solve the problem that since the distortion degrees of the cables are not uniform during use, if a conventional cable stripping device is adopted, the cables can be easily cut off, the problem that since the thickness specifications of the cables are different, cutters need to be replaced during cable stripping, the stripping device is very inconvenient to use and low in stripping efficiency, and the problem thatlarge-scale automatic equipment for stripping is not suitable for small workshop machining and cost is high. The stripping device comprises a box frame main body. A back plate is vertically, upwardsand fixedly mounted at the edge of the rear end of the box frame main body. According to the device, a blade adjusting screw rod is vertically screwed at the position, corresponding to the center of atray, of the middle part of a blade adjusting mechanism, and the left end of the top plane of the wire stripping mechanism is fixedly provided with a cambered-surface-shaped wire skin removing platein a vertically upward manner, wherein inner concave surface of the wire skin removing plate faces the position of a wire stripping knife, so that when a cable passes through the wire stripping mechanism, stripping can be carried out.

The invention relates to an open mill mechanism, in particular to a mechanism which is arranged at the rear part of the open mill, not only can stop the rubber but also can shovel the rubber, belonging to the technical field of the open mill. The rear rubber stopping and shoveling mechanism comprises a baffle plate support, a first nylon baffle plate, a second nylon baffle plate, a main framework and an air cylinder support, wherein traveling wheels are arranged on two sides of the baffle plate support in the vertical direction, and the baffle plate support is connected into the main framework in a sliding manner through the traveling wheels arranged on two sides of the baffle plate support in the vertical direction. The front end of the baffle plate support is connected with the first nylon baffle plate through a bolt, the lower end of the first nylon baffle plate is connected with the second nylon baffle plate through a bolt, a rubber stopping head of which the upper part and the lower part are both slopes is arranged at the front end of the second nylon baffle plate, and the first nylon baffle plate and the second nylon baffle plate are mutually perpendicular to each other. By adopting the rear rubber stopping and shoveling mechanism of the open mill, the working efficiency and cleanliness of the open mill can be improved, and convenience in maintenance can be achieved; the vertical position of the baffle plate support can be adjusted by the virtue of the drive of a magnetic air cylinder, so that the rubber stopping head can be still in tight fit with a rubber roller after being used for a long time.

The invention relates to an intelligent assembly system for machining brake assemblies. The intelligent assembly system comprises a circulation type assembly conveying line, wherein a feeding mechanism, a spring mounting mechanism, a grinding mechanism, a turnover mechanism, an iron core dismounting mechanism and a discharging mechanism are sequentially distributed along the conveying direction ofthe assembly conveying line, the assembly conveying line is further provided with at least one manual assembling process, at least one assembly tool is further arranged on the assembly conveying line, and the assembly tool flows among the mechanisms along with conveying of the assembly conveying line. The system has the advantages that circulation of the assembly tool is realized through arrangement of the circulation type assembly conveying line, in addition, the feeding mechanism, the spring mounting mechanism, the grinding mechanism, the turnover mechanism, the iron core dismounting mechanism, the discharging mechanism and the manual assembling process are matched, so that semi-automatic assembling and polishing of brakes is realized, the manual labor is greatly reduced, and the working efficiency is correspondingly improved.

The invention discloses a microwave treatment vehicle for asphalt concrete in installation groove areas of bridge expansion joints, comprising a vehicle body. A compacting device is arranged at the front end of the vehicle body. A generator set, a microwave power supply and a control system are installed in the vehicle body compartment. A motion mechanism is mounted on the rear end of the vehicle body and is provided with microwave heating walls. The microwave treatment vehicle disclosed by the invention has the characteristics of fast speed, high efficiency, safety, low labor intensity, no noise pollution and no environment pollution during construction processes. The microwave treatment vehicle can directly recycle the waste asphalt, and plays an important role in saving energy and reducing consumption.

The invention discloses a quantitative self-closing valve, which comprises a shell. A water outlet of the shell is provided with a water outlet pipe, the inner end of the water outlet pipe is providedwith a first water outlet and a second water outlet, a sealing cover is arranged at the second water outlet, a water baffle and a jacking rod connected with a lifting block are arranged on the lowerpart of the sealing cover, and the lifting block is provided with a gear structure; a rotating shaft and a worm wheel shaft are arranged in the shell, an impeller is mounted at the left end of the rotating shaft, and a worm structure is arranged at the right end of the rotating shaft; and a worm wheel and a transmission gear are mounted on the worm wheel shaft, the worm structure at the right endof the rotating shaft meshes with the worm wheel, and the transmission gear meshes with the gear structure on the lifting block. The shell is internally provided with the impeller, the worm wheel andthe transmission gear, a water flow rushes the impeller to move and drives the lifting block and the jacking rod through the worm wheel, a worm and a gear transmission structure to upwards push the sealing cover, the second water outlet is closed slowly, and thus quantitative water supplying is achieved. The quantitative self-closing valve is ingenious in conception, stable and reliable in work and wide in application range.

The invention provides a road paving structure based on municipal engineering. The road paving structure comprises a vehicle body, a concave groove is formed in the vehicle body, the lower end of a supporting stand column is slidably clamped in sliding grooves in the left side and the right side of the concave groove, a fixed transverse plate is arranged on one side of the top end of the supporting stand column, two sets of upper connecting rods are symmetrically arranged and slidably clamped in the sliding grooves in the lower surface of the fixed transverse plate, the upper ends of shear fork arms are hinged to the upper connecting rods, the lower ends of the shear fork arms are hinged to lower connecting rods, the two sets of the lower connecting rods are symmetrically arranged and clamped in the sliding grooves in the upper surface of a sliding bottom plate in a sliding mode, the lower end of the sliding bottom plate is fixedly connected with a protective shell, and a rail box is arranged at the lower end of the protective shell. Through the arrangement that the lower end of the supporting stand column is in threaded connection with a threaded rod, the supporting stand column can be driven to slide front and back in the concave groove in the process that a hand wheel is rocked to drive the threaded rod to rotate, therefore the left-right position of a circular pipeline canbe adjusted, and deviation of a pipeline connector is prevented.

The invention relates to the technical field of vegetable planting racks, in particular to a vegetable planting rack with a nutrient solution supply device. The vegetable planting rack comprises a base, wherein two first clamping grooves are formed above supporting plates respectively, the two first clamping grooves are in clamped connection with first clamping blocks respectively, shielding mechanisms are welded between the other ends of the first clamping blocks in clamped connection with the different supporting plates respectively, the opposite sides of the two supporting plates are weldedwith two first supporting rods respectively, the upper surfaces of the first supporting rods are provided with a plurality of second clamping grooves respectively, the second clamping grooves are internally in clamped connection with second clamping blocks, placement plates are welded between the other ends of the second clamping blocks in correspondingly clamped connection with the two differentfirst supporting rods, a groove body and a tank body are placed above the two placement plates respectively, and a planting groove is formed above a clamped mechanism. The vegetable planting rack with the nutrient solution supply device can collect rainwater, and can be disassembled and mounted.

The invention discloses a safe and reliable painting device. The safe and reliable painting device comprises a base support and a rack plate arranged at the center of the top of the base support, standing legs are fixedly arranged in the periphery of the bottom of the base support, an adjusting groove having a downward opening is arranged in the bottom of every standing leg, every adjusting grooveis internally spirally cooperated with a spiral foot, a balancing foot pad is fixedly arranged at the bottom of every spiral foot, slide grooves which can extend forwards or backwards are respectively correspondingly arranged at the left end and the right end of the top of the base support, and supporting racks capable of smoothly sliding forwards or backwards are respectively correspondingly jacked in the two slide grooves. The device has the advantages of simple structure, low production cost, simplicity in operation, convenience in use, realization of clamping and fixing of a spherical workpiece in front, back, left and right directions, safety and stability in clamping and fixing of the spherical workpiece, uniformity and accuracy in painting of the spherical workpiece by a painting brush, avoiding of painting non-uniformity and inaccuracy caused by rolling of the spherical workpiece, great increase of the working efficiency and the processing precision of the painting processingof the spherical workpiece, and suitableness for being promoted and applied.

The invention discloses a triangular paper folding device and method for paper jams and an automatic regulating mechanism. The automatic regulating mechanism comprises a conveyor belt, the triangular paper folding device, a mounting plate, a transmission component, a first drive device and a second drive device, wherein one end of the mounting plate is connected with the triangular paper folding device, and the other end of the mounting plate is connected with the transmission component; the transmission component is connected with the first drive device and the second drive device. The triangular paper folding device comprises a triangular paper folding block, a horizontal paper folding assembly and an oblique paper folding assembly, wherein the surface, needing to be turned over, of paper is turned over by 90 degrees through the triangular paper folding block, the paper continues to be turned over by 90 degrees by the horizontal paper folding assembly and the oblique paper folding assembly, and then paper folding is completed. The first drive device is used for regulating the horizontal position of the triangular paper folding device, and the second drive device is used for regulating the vertical position of the triangular paper folding device. The triangular paper folding device is simple in structure, low in cost, convenient and reliable to regulate and high in degree of automation, and improves the paper folding precision.

The invention provides a flexible outlet-inlet guide and guard unit as well as a guiding and guarding method. The device comprises a guide and guard mechanism, a guide and guard support, a spherical swing device, a first floating supporting piece and a second floating supporting piece, wherein the two sides of the guide and guard mechanism are supported on the guide and guard support in a floatingmode through the first floating supporting piece and the second floating supporting piece respectively, and the bottom of the guide and guard mechanism is coaxially and fixedly connected with the spherical swing device through a connecting piece; a cylindrical hole matched with the spherical swing device is formed in the guide and guard support, and the spherical swing device is located in the cylindrical hole and is in rolling contact with the inner wall of the cylindrical hole; and the spherical swing device is used for limiting the guide and guard mechanism to swing in the rolling range. According to the outlet-inlet guide and guard unit, a rigid guide and guard mechanism is replaced by the flexible guide and guard mechanism; when rolled materials enters the guide and guard unit, the guide and guard mechanism can be automatically adjusted in all directions according to the impact force of the rolled materials and a certain buffer effect can be realized, and therefore the roller materials can be prevented from colliding with the rigid guide and guard mechanism, and the surface smoothness of the rolled materials is improved.

The invention discloses a clearance adjustment for conveying rollers of an embroidery machine. The clearance adjustment comprises a base, an upper presser wheel, a lower roller, U-shaped frames, presser plates, adjusting screws, fixed bearing blocks, moving bearing blocks, and springs; the U-shaped frames are arranged on the two sides of the base respectively; the inside of each U-shaped frame isprovided with a U-shaped channel; one presser plate is arranged at the top of each U-shaped frame; one fixed bearing block is arranged at the inner bottom of each U-shaped channel; positioning terminals are arranged at the upper end of each fixed bearing block; each positioning terminal is provided with one spring; each spring is provided with one moving bearing block; each presser plate is provided with a screw hole I in which one adjusting screw is arranged; a bearing hole II is formed in each fixed bearing block; the bearing holes II are connected with rolling bearings II on the shaft endsII of the lower roller; one bearing hole I is formed in each moving bearing block; the bearing holes II are connected with ball bearings I at the shaft ends of the upper presser wheel; the outer sideof each U-shaped channel is provided with four flat washers; the flat washers are connected with the corresponding U-shaped channel via fastening screws. The upper presser wheel is adjustable; a clearance between the upper presser wheel and the lower roller is adjustable; a distance is controlled through graduation marks to adapt to conveying of fabrics different in thickness.

The invention discloses a hook comprising a hook body used for being fixedly connected with a back plate of a display unit. The hook body is provided with at least one hanging connection assembly. Each hanging connection assembly comprises a support fixedly connected with the hook body, a vertical regulation screw connected with the support in a threaded manner to regulate the vertical position ofthe hook body, a sleeve hook used for being connected with a wall surface transverse beam in a hanging manner and a front-back regulation screw connected with the side, away from the hook body, of the sleeve hook in a threaded manner. The front-back regulation screws are connected with the supports in the vertical direction in a sliding manner. Each front-back regulation screw is provided with alimiting part used for limiting the corresponding support in the axial direction of the front-back regulation screw so that the front-back position of the hook body can be regulated when the front-back regulation screws are twisted. The hooks is convenient to use, the position of the display unit can be conveniently regulated, and much convenience is brought to splicing installation of the displayunit. The invention further discloses a display hanging connection device comprising the hooks.

The invention discloses a rocket propellant filling butt joint system. The system comprises a base fixedly connected to a mounting structure, at least two filling pipelines, a butt joint assembly, andseveral rotating assemblies, wherein axes of end openings in the two ends of each filling pipeline do not coincide, all the filling pipelines are sequentially connected, the adjacent end openings ofevery two adjacent filling pipelines are connected in a rotating and sealing mode, and the filling pipeline at a head end is arranged on the base and connected with a filling medium output pipeline; the butt joint assembly is arranged on the filling pipeline at a tail end, and the butt joint assembly is used for being in butt joint with a filling port so that the filling pipeline at the tail end is connected with the filling port; and the rotating assemblies are arranged between the adjacent filling pipelines and used for driving the adjacent filling pipelines to rotate relatively so that thebutt joint assemblies move to the filling port to achieve butt joint connection. The system can achieve automatic filling and butt joint, and is simpler in structure and easy and convenient to operate.

The invention discloses a pipe cutting device which comprises a base station and a pipe lifting device arranged on one side of the base station. A cutting device is arranged above the base station; the pipe lifting device comprises a pipe lifting cavity arranged on one side of the base station and used for lifting a pipe, a concave hole is formed in the right end of the pipe lifting cavity, and the length direction of the concave hole is parallel to the length direction of the pipe lifting cavity; and a first driving motor is arranged on the base station, an incline wheel corresponding to the concave hole in position is arranged on the first driving motor, teeth are arranged on the incline wheel, and the teeth on the incline wheel can abut against the pipe when the incline wheel rotates.

The invention discloses stranding equipment capable of quickly increasing and decreasing single-wire charging barrels for communication data line processing, and relates to the technical field of stranding equipment for data line processing. The stranding equipment comprises a base, wherein a driving motor and a supporting plate are sequentially distributed on the base from right to left, a motorshaft is arranged on the side, close to the supporting plate, of the driving motor, the motor shaft movably penetrates through the interior of the supporting plate, a rotating shaft is arranged on theleft side of the middle of the supporting plate, a transmission belt is arranged on the outer side between the rotating shaft and the motor shaft, a rotating roller is arranged on one side of the rotating shaft, and a fixing frame is fixed to the outer side of the rotating roller. The stranding equipment has the beneficial effects that the driving motor and the motor shaft can drive the rotatingshaft to rotate through using the transmission belt, so that the rotating roller is driven to rotate, four groups of fixed frames can be driven to rotate through the rotating roller, and a plurality of single-wire twisted wires led out by a plurality of groups of charging barrel mechanisms in the fixed frames can be twisted; and therefore, stranding processing of a data line is facilitated.