51results about How to "Easy to move simultaneously" patented technology

The invention discloses a linkage method and system for a three-dimensional building model and a two-dimensional drawing, and the method comprises the steps: logging in at a 2D end of a control end, selecting a target project to open the two-dimensional drawing, and creating a remote linkage room; logging in at a 3D end of the control end, adding a remote linkage room, and establishing linkage between the three-dimensional building model and the two-dimensional drawing; logging in a 2D end and a 3D end in the plurality of clients, adding a remote linkage room at the 2D end, and adding a remotelinkage room at the 3D end at the same time to realize remote linkage between the control end and the plurality of clients; automatically opening a two-dimensional drawing and a three-dimensional building model corresponding to the control end at the 2D ends and the 3D ends of the plurality of clients; and performing operation at the 2D end and the 3D end of the control end, wherein the operationis synchronized to the 2D ends and the 3D ends of the plurality of clients. On the basis of realizing linkage of the two-dimensional drawing and the three-dimensional building model, remote synchronous linkage operation of multiple users can be realized.

The invention relates to the technical field of welding devices, and particularly discloses a solar frame and lamp pole welding device and method based on solar street lamp machining. Comprising a fixing base, a monitoring mechanism arranged at the top of the fixing base and used for determining the attaching degree of a lamp pole sleeve and a frame body, and a limiting mechanism arranged in linkage with the monitoring mechanism and used for fixing a solar frame. Therefore, the abutting degree of the lamp pole sleeve and the solar frame can be judged conveniently, the situation that welding is unstable due to a gap between the lamp pole sleeve and the solar frame is reduced, the limiting assembly and the monitoring assembly are arranged in a linkage mode, the solar frame can be clamped conveniently, the inner wall of the lamp pole sleeve can be aligned to the center of the solar frame conveniently, and the working efficiency is improved. And therefore, the outer wall and the inner wall of the lamp pole sleeve can be welded before and after subsequent overturning, and the welding stability of the lamp pole sleeve and the solar frame is improved.

The invention discloses a retro robot pendant mechanism arm welding spot grinding and machining production device. The retro robot pendant mechanical arm welding spot grinding and machining productiondevice comprises a welding machine box, feeding boxes are symmetrically arranged on the two sides of the top of an inner cavity of the welding machine box, a parallel sliding assembly is arranged atthe bottom of the machine box inner cavity of the welding machine box, a welding head is fixedly installed at the bottom of a support in a bolt clamping mode, a grinding assembly is arranged at the bottom of the right side of a rotary disc, and a second feeding block is arranged at the bottom of the feeding box on the right side of the inner cavity of the welding machine box. A first feeding blockand the second feeding block are symmetrically arranged at the bottom of the feeding box, the parallel sliding assembly is arranged, the first feeding block and the second feeding block can be conveniently driven to transfer a mechanical arm to the bottom of a positioning block, meanwhile, the welding head and the grinding assembly are arranged on the two sides of the rotary disc, so that weldingmarks on the surface of the mechanical arm can be conveniently ground while the mechanical arm is welded, infirmness of gluing and unattractiveness of the surface during welding are avoided, and therefore, the assembly production of the mechanical arm is facilitated.

The invention discloses a cable breakpoint wiring device for electric power. The device comprises a body, a feeding mechanism is arranged in the middle of the upper surface of the body; a telescopic rod is mounted in the middle of the interior of the feeding mechanism; a material receiving opening is formed in the surface of the left side of the clamping mechanism; a second rack is arranged underthe right side surface of the clamping mechanism; a feeding hole is formed in the center of the left side surface of the body; a collecting box is mounted under the body; and the clamping mechanism and the cutting mechanism are arranged in the body. The body is arranged, so that the clamping mechanism and the cutting mechanism can be fixed conveniently, through arrangement of the cutting mechanism, body injuries caused by manual misoperation of a technician can be avoided conveniently through mechanical operation, meanwhile, through arrangement of the clamping mechanism, a cable insulation layer can be fixed conveniently, and therefore separation between the insulation layer and an electric wire is facilitated.

The invention discloses a continuous product detection device and method convenient for sampling, and the device comprises a fixed seat, and an automatic clamping and sampling assembly is fixedly installed at the edge of the top end of the fixed seat. The automatic clamping and sampling assembly is mainly formed by combining an electric rotating shaft, a sampling driving gear, a sampling driven gear, a sampling connecting rod, a sampling sliding rod and a sampling connecting frame, the electric rotating shaft has the function of taking materials from a cutting knife, and the sampling driving gear, the sampling driven gear, the sampling connecting rod, the sampling sliding rod and the sampling connecting frame have the function of synchronously taking materials from a needle cylinder; through cooperation of the automatic clamping and sampling assembly and the rotary buffering and collecting assembly, a worker can conveniently carry out positioning and sampling treatment on materials, the material sampling process of the worker is optimized, the stability of the material sampling process is guaranteed, meanwhile, the worker can conveniently carry out storage treatment on sampled waste materials, and the working efficiency is improved. And the pollution to the external environment caused by peculiar smell generated by placing the waste materials everywhere is avoided.

The present invention relates to the technical field of slope protection, and specifically to an open-pit mine slope reinforcement device, comprising a protective net and a combined anchor rod detachably connected to the protective net, wherein the combined anchor rod comprises a plurality of groups of fixing structures arranged in the same axial direction, and adjacent fixing structures are fixed by adjusting structures, and an extrusion structure is arranged inside the fixing structures, and the extrusion structure is used to improve the stability of the fixing structure and the inner wall of the borehole; according to the depth of the borehole, a suitable number of fixing cylinders are selected, and the adjusting structure is threadedly connected to a threaded structure at one end of a group of sliding rods; after one group of sliding rods is installed, one end of another group of sliding rods is connected to the adjusting structure by the threaded structure, so that the length of the combined anchor rod can be adjusted according to the depth of the borehole, thereby improving the convenience of use.

The invention discloses a drawing driving mechanism in a seamless steel pipe drawing machine. According to the technical scheme, the drawing driving mechanism in the seamless steel pipe drawing machine is characterized by comprising a vehicle body arranged on the drawing machine and driven through a chain, wherein the vehicle body is slidably connected to the drawing machine in the length direction of a seamless steel pipe, and the vehicle body is provided with a clamping mechanism used for clamping the end surface of the seamless steel pipe, two connecting mechanisms used for being kept connected with the chain, and a disassembling and assembling mechanism used for disassembling and assembling the clamping mechanism. According to the drawing driving mechanism in the seamless steel pipe drawing machine, the end part of the seamless steel pipe can be ensured to be clamped and fixed, the seamless steel pipe can be driven to synchronously move, and meanwhile, clamping blocks can be disassembled and replaced.

The invention discloses a making and storage technology of an antibacterial and washable linen fabric, and belongs to the field of linen fabric making. According to the making and storage technology of the antibacterial and washable linen fabric, after the linen fabric is made based on the technology flow, the collected linen fabric is stored through a breathing storage machine, a breathing boarddrives the linen fabric to reciprocate up and down at the same time, and air ventilation in the linen fabric is kept all the time; by controlling variables of the environmental conditions in the breathing storage machine in cooperation with a test on the firmness of the linen fabric, the conditions of the breathing storage machine which are most suitable for storing the linen fabric can be obtained, and the influence of the external environment on the firmness of the linen fabric in the storage process of the linen fabric is reduced; compared with a storage mode for the linen fabric in the prior art, the technology greatly prolongs the storage time after the linen fabric is made, and improves the washability after the linen fabric is cut.

The invention discloses a high-altitude component hoisting construction method, and relates to the technical field of steel structure appliances. The construction method comprises the following construction steps of 1, welding two tripod bodies with the same size through a component, fixedly mounting walking wheels at the bottoms of the tripod bodies, installing a manual electric hoist on the upper ends of the tripod bodies, installing a steel wire rope on the manual electric hoist, fixedly installing a hoisting piece at one end of the steel wire rope, and connecting the other end of the steelwire rope to a wire rope winding disc through winding; 2, fixedly mounting the two ends of the component on the hoisting piece; and 3, moving the component to a designated position through the tripodbodies, then rotating the wire rope winding disc so that the component rises to a designated position, and then rising the component above the upper side of a beam frame through moving the tripod bodies. According to the high-altitude component hoisting construction method, rapid movement and hoisting can be realized, and the stability is high, so that the speed is high during hoisting construction, and energy and cost can be saved; and meanwhile, synchronous movement is facilitated so that time can be saved, and the stability of the component can be improved during movement, and therefore the protection of the component can be effectively realized.

The invention provides a pulse dust removal device for a road surface blowing machine, and relates to the technical field of dust removal devices, the pulse dust removal device comprises a dust removal box, two dust removal chambers are arranged in the dust removal box, a plurality of groups of filter cloth bags are equidistantly arranged in the two dust removal chambers of the dust removal box, and a mounting plate is fixed on the inner wall of the dust removal box and located at the tops of the filter cloth bags; the top of the filter cloth bag fixedly penetrates out of the mounting plate, spraying pipes are mounted at the tops of the two dust removal chambers of the dust removal box, the spraying head ends of the spraying pipes correspond to openings in the top of the filter cloth bag, a pulse device is fixedly mounted at the outer end of the dust removal box, and the two spraying pipes are communicated with the pulse device. Through cooperation of the pulse device and the cleaning assembly, dust on the outer surface of the filter cloth bag is blown off through high-pressure gas from inside to outside, wall scraping cleaning is conducted on the outer surface of the filter cloth bag through the cleaning assembly for dust with high adhesiveness, comprehensive dust removal cleaning is conducted on the filter cloth bag, and the good ventilation effect is kept.

The vertebral body dilator comprises a fixing frame with the upper end and the lower end opened, limiting pieces are arranged on the left side and the right side of the inner wall of the fixing frame, a fixing ring is arranged in the middle of the inner wall of the fixing frame, and threaded rods are rotationally connected between the left side and the right side of the fixing ring and the corresponding limiting pieces in a matched mode. The outer wall of each threaded rod is in threaded connection with a sliding sleeve, a fixing rod is arranged at the lower end of each sliding sleeve, expanding pieces are arranged on the outer walls of the two fixing rods, a first bevel gear is arranged at one end of each threaded rod, worm wheels are rotationally connected to one ends of the left side and the right side of the inner wall of the fixing frame, and a second bevel gear is arranged on the outer wall of each worm wheel. The left and right sides of the upper end of the fixed frame are rotatably connected with worms, and the left and right sides of the upper end of the fixed frame are provided with covers. When a vertebral body operation is carried out on a patient, tissue can be separated, medical staff can clearly observe the operation position, and operation can be carried out from different angles when the operation is carried out.

The invention discloses a graphite electrode resistivity detection device, which comprises a hanging board, a driving motor and a detection platform. A slide bar is arranged inside the hanging board, and a chute is opened inside the hanging board. A slide plate is connected, and the slide plate is installed on the outside of the slide bar. A toggle rod is arranged outside the hanging plate, and a connecting rod is connected to the bottom of the toggle bar, and the connecting rod is located inside the hanging plate. A positioning rod is arranged on the outside, and the positioning rod is located inside the hanging plate. In this graphite electrode resistivity detection device, the two sleeve rods sleeved on the screw rod are relatively moved through the opposite threads on both sides, and the movement of the sleeve rods drives the movement of the clamping ring, thereby facilitating the adjustment of the clamping ring. The wide distance can be adjusted according to the size of the graphite electrode, which is convenient for the clamping ring to fix the graphite electrode, which is beneficial to prevent the graphite electrode from shifting during detection and improve the detection efficiency.

The invention discloses a graphite electrode resistivity detection device, and the device comprises an upper hanging plate, a driving motor and a detection table, a sliding rod is arranged in the upper hanging plate, a sliding groove is formed in the upper hanging plate, a sliding plate is connected in the sliding groove, the sliding plate is installed outside the sliding rod, and a poking rod isarranged outside the upper hanging plate; the bottom of the poke rod is connected with a connecting rod, the connecting rod is located in the upper hanging plate, a positioning rod is arranged outsidethe connecting rod, and the positioning rod is located in the upper hanging plate. According to the graphite electrode resistivity detection device, the two sleeve rods sleeving the screw rod relatively move through the threads in the opposite directions on the two sides, and the sleeve rods move to drive the clamping rings to move, so that the wide distance between the clamping rings can be conveniently adjusted according to the size of a graphite electrode, and the graphite electrode can be conveniently fixed by the clamping rings; and the graphite electrode does not deviate during detection, so that the detection efficiency is improved.

The invention discloses a terminal direct printing device of a two-dimensional animation design product, and relates to the field of animation design printing. In the terminal direct printing device of the two-dimensional animation design product, two ends in a device box both are in sliding connection with a printer, an external surface of the device box is movably connected with a rotating tubethrough clamping, one end of the rotating tube is in threaded connection with a threaded rod, an end part of the threaded rod stretches to the inside of the rotating tube to rotationally connect a push rod, the push rod is in sliding connection with an inner wall of the rotating tube, and one end, far away from the threaded rod, of the push rod stretches to the inside of the device box and fixedlyconnects a clamping connection component; the clamping connection component is rotationally connected on an inner side wall of the device box and at the side opposite to the push rod; a moving component is movably inserted at the external surface of the device box and located under the rotating tube, and the end part of the moving component stretches to the inside of the device box and respectively in transmission connection with two groups of printers. The terminal direct printing device of the two-dimensional animation design product is convenient for printing animation patterns on side faces of a package box of an animation product.

The invention provides a synchronous tracking device for a light inspection machine. The synchronous tracking device comprises a clutch (6), a tracking motor (9), a tracking shaft sleeve (12), a bearing block (13) and a tracking rotary plate (14) fixedly connected with the tracking shaft sleeve (12), wherein an image acquisition device is mounted on the tracking rotary plate (14); the bearing block (13) is fixedly mounted on a mounting cross beam (16) of the light inspection machine; the tracking shaft sleeve (12) is located in the bearing block (13) and nested on the spindle (15) of the light inspection machine; the clutch (6) is used for connecting the spindle (15) with the tracking shaft sleeve (12), when the clutch is in an engaged state, the tracking shaft sleeve (12) rotates along with the spindle (15), and when the clutch (6) is in an unengaged state, the tracking motor (9) drives the tracking shaft sleeve (12) to rotate in the direction opposite to the rotation direction of the spindle (15). With the adoption of the synchronous tracking device, the image acquisition device can keep synchronous rotation along with the rotary plate better.

The invention relates to the technical field of medical instruments, in particular to a chest compression device for patient respiration recovery, which comprises a base, a vertical plate is mounted at the top of the base through screws, a first motor mounting seat is mounted at the top end of the vertical plate through screws, and a first driving motor is mounted at the top of the first motor mounting seat through screws. By arranging the first driving motor, the circular plate, the second connecting rod, the first connecting rod, the sliding limiting mechanism and the pressing block, the first driving motor works after being powered on and is used for driving the circular plate to rotate, the circular plate drives the second connecting rod to do arc motion, and the second connecting rod drives the first connecting rod to do reciprocating motion in the vertical direction through the sliding limiting mechanism; the first connecting rod can conveniently drive the pressing block to synchronously move in the vertical direction, medical staff can be conveniently replaced to conduct chest pressing operation on the critical patient, and compared with manual chest pressing operation, the operation convenience is improved.

The invention discloses an intrinsically safe controller for mining, comprising an installation box, a protective frame fixedly connected to an outer wall of one side of the installation box, an intrinsically safe controller body arranged in the protective frame, a fixed dustproof component fixedly connected to the top of the intrinsically safe controller body, and a dynamic dustproof component arranged on the intrinsically safe controller body. The invention relates to the technical field of intrinsically safe controllers; the intrinsically safe controller for mining can provide safety protection for the intrinsically safe controller body by arranging the intrinsically safe controller body in the protective frame, and at the same time, the control panel can be conveniently dustproofed by the coordinated use of the arranged fixed dustproof component and the dynamic dustproof component, so as to prevent dust impurities under the mine from entering into the intrinsically safe controller body through the gap on the control panel, and at the same time, the dynamic dustproof component can be separated from the fixed dustproof component by the coordinated use of the arranged pulling mechanism and the locking mechanism, so as to expose the control panel for the convenience of operation and use by operators, and the use is more convenient.

The utility model discloses a temperature adjusting device for pesticide granule processing, which comprises an adjusting box and a heater connected to the adjusting box, an air inlet is arranged at the end part of the adjusting box, the air inlet is connected with a baffle plate for shielding the air inlet, the baffle plate is connected with a driving mechanism for driving the two baffle plates to be close to each other or far away from each other, and the heater is connected with the adjusting box. The driving mechanism comprises a first air cylinder, a lifting rod, a lifting block and two connecting plates, the first air cylinder is used for driving the lifting rod to ascend and descend, the lifting block is used for guiding the lifting rod, the two ends of the connecting plates are connected with the lifting block and the corresponding baffles, and the adjusting box is connected with a positioning mechanism used for positioning the lifting rod. The two baffles can move synchronously and conveniently, the air inlet can be blocked in different sizes, and therefore the air inlet amount is adjusted, the temperature in the drying cylinder can be adjusted conveniently to be within a proper temperature range, and the material processing efficiency is improved.

The utility model discloses a measuring head of a mechanism for measuring the inner diameter and the outer diameter of a ring part, which relates to the technical field of ring part measurement and specifically comprises a bottom plate and an adjusting plate. According to the measuring head of the measuring mechanism for the inner diameter and the outer diameter of the ring part, a first screw rod, a first threaded ring block, a first matching block, a guide ring, a connecting rod, a second matching block, a first arc-shaped plate, a convex sliding block, a second arc-shaped plate, a guide rod, a baffle plate, a pointer rod and a graduated scale are arranged; the measuring head of the ring part inner and outer diameter measuring mechanism has the effect of conveniently measuring the inner and outer diameters of a ring part, through cooperation of a first screw rod and a first threaded ring block, a plurality of first arc-shaped plates and second arc-shaped plates can conveniently move synchronously, a plurality of second arc-shaped plates can conveniently abut against the inner surface and the outer surface of the ring part respectively, and the inner and outer diameters of the ring part can be conveniently measured. And through cooperation of the pointer rod and the graduated scale, measurement is facilitated, and the purpose of improving practicability is achieved.

The invention discloses a tie-dyeing device for textile dyeing, which comprises a dipping box and an operating table. A drainage pipe is arranged on the lower wall of one side of the dipping box, and two symmetrically arranged on the side wall of the bottom of the operating table. Supporting legs, the dipping tank is also provided with a support bracket, the front end and the rear end wall of the support bracket are respectively provided with connecting rods, and the first slider is respectively provided on one end wall of the two connecting rods , The top wall of the dipping tank is also provided with an adjustment mechanism, the adjustment mechanism includes a first screw, a mounting plate and an adjustment block, and a rotation mechanism is also provided in the wall at the middle position of the bottom of the operation table. A tie-dyeing device for textile dyeing according to the present invention: through the setting of the rotating mechanism, the cloth can be easily clamped and rotated, and the cloth can be conveniently formed into common spiral folds. The arrangement of the limiting mechanism is convenient for temporarily limiting the rotated cloth to prevent it from falling apart and affecting the subsequent dripping.

The utility model relates to the technical field of motorcycle lamps, in particular to a motorcycle LED tail lamp structure which comprises a fixing frame installed on a motorcycle body and two symmetrically-arranged steering lamp mechanisms fixed to the fixing frame, each steering lamp mechanism comprises an installation assembly and a lamp holder assembly, the installation assembly comprises an installation plate fixedly connected to the fixing frame, and the lamp holder assembly is fixedly connected to the installation plate. A mounting cover is fixedly connected to the outer wall of one side of the mounting plate, a driving box of an n-shaped structure is fixedly connected to the outer wall of the mounting cover, openings are formed in the outer walls of the opposite sides of the driving box, limiting blocks are slidably connected to the inner walls of the two openings, the lamp holder assembly comprises a lamp holder, and limiting grooves matched with the limiting blocks are formed in the outer walls of the two sides of the lamp holder. According to the motorcycle steering lamp, the defects in the prior art are overcome, the steering lamp mechanism is arranged on the fixing frame, the installation assembly arranged in the steering lamp mechanism is matched with the lamp holder assembly, the lamp holder can be conveniently and rapidly disassembled, and then the problem that an existing motorcycle steering lamp is inconvenient to disassemble is solved.

The invention provides a synchronous tracking device for a light inspection machine. The synchronous tracking device comprises a clutch (6), a tracking motor (9), a tracking shaft sleeve (12), a bearing block (13) and a tracking rotary plate (14) fixedly connected with the tracking shaft sleeve (12), wherein an image acquisition device is mounted on the tracking rotary plate (14); the bearing block (13) is fixedly mounted on a mounting cross beam (16) of the light inspection machine; the tracking shaft sleeve (12) is located in the bearing block (13) and nested on the spindle (15) of the light inspection machine; the clutch (6) is used for connecting the spindle (15) with the tracking shaft sleeve (12), when the clutch is in an engaged state, the tracking shaft sleeve (12) rotates along with the spindle (15), and when the clutch (6) is in an unengaged state, the tracking motor (9) drives the tracking shaft sleeve (12) to rotate in the direction opposite to the rotation direction of the spindle (15). With the adoption of the synchronous tracking device, the image acquisition device can keep synchronous rotation along with the rotary plate better.

The invention discloses a drawing driving mechanism in a seamless steel pipe drawing machine. The key points of the technical solution are: a drawing driving mechanism in a seamless steel pipe drawing machine, which includes a car set on the drawing machine and driven by a chain. body, the car body is slidably connected to the drawing machine along the length direction of the seamless steel pipe, the car body is provided with a clamping mechanism for clamping the end face of the seamless steel pipe, two sets of connecting mechanisms for maintaining the connection with the chain, and The disassembly mechanism for disassembly and assembly of the clamping mechanism. The invention can ensure that the end of the seamless steel pipe is clamped and fixed, drives the seamless steel pipe to move synchronously, and at the same time disassembles and replaces the clamping blocks respectively.

The invention discloses an automatic assembling device of a flat copper wheel for a plastic-steel door and window. The automatic assembling device comprises an assembling machine, a driving roller, aconveying belt, an electric push rod and a material cylinder; a rotating groove is formed in the bottom of the assembling machine, the rotating groove is of a rectangular column structure, limiting holes are formed in the inner wall of the rotating groove, driving rollers are inserted into the limiting holes, the other ends of the driving rollers penetrate through the outer wall of the assemblingmachine and are in transmission connection with the power output end of a motor, and meshing strips are fixedly connected to the surfaces of the driving rollers; and the conveying belt is arranged onthe outer sides of the driving rollers, a vertical plate is fixedly connected to the surface of the conveying belt, a lifting groove is formed in the surface of the vertical plate, a pressing plate isconnected to the interior of the lifting groove in a sliding mode, an adjusting rod is arranged on the surface of the pressing plate, and the adjusting rod is arranged on the outer wall of the vertical plate in a penetrating mode. According to the automatic assembling device, the vertical plate and a segmented piece are arranged on the conveying belt, the positions of the vertical plate and the segmented piece are adjusted according to different types and sizes of the copper wheel fittings, so that the application range of the assembling machine is enlarged.

The invention discloses machining equipment for iron special-shaped buckle opening health maintenance. The machining equipment comprises a bottom chassis; a water tank is arranged in the bottom chassis; fixed seats are symmetrically arranged on the two sides of a supporting base on the surface of the top of the bottom chassis; a connecting base is connected between the inner sides of ball screws;a servo motor is installed on the top surface of the connecting base; an output end of the servo motor crosses the inside of the connecting base and is connected with a disc; and a cleaning mechanismis arranged at the bottom of an adjusting rod. The water tank and a lifting mechanism are arranged in the bottom chassis, the water tank is divided into a structure with an upper side layer and a lower side layer, water and equipment can be separated conveniently, water stored in the upper layer of the water tank can be heated conveniently through the arrangement of a heating rod, damage to a punch when surface dirt is hard in texture and directly brushed is avoided, meanwhile, through the arrangement of the lifting mechanism, a rotating head can be conveniently brought into the water tank tobe soaked, and therefore cleaning of the dirt on the surface of the rotating head is facilitated.

The invention relates to the technical field of testing devices, in particular to a vehicle fuel cell testing device which comprises vibration testing equipment, a workbench is installed at the top of the vibration testing equipment, movable supports are connected to the two sides of the top of the workbench through sliding fixing assemblies, and clamping blocks are arranged on the sides, close to each other, of the movable supports. The interior of the movable support is in threaded connection with a locking screw rod, and one end of the locking screw rod is movably connected to the outer surface of the clamping block through a bearing. According to the invention, the sliding rail and the guide block are in sliding connection, so that the movable bracket can move on the top of the workbench conveniently, the two sides of the fuel cell are preliminarily limited and fixed, the fuel cell is conveniently mounted on the upper surface of the workbench to receive a vibration test, and the fuel cell is effectively prevented from being damaged when the fuel cell is fixed on the workbench. A plurality of groups of bolts are needed, the test operation is complicated, and the working efficiency of operators is also reduced.