10871results about "Work benches" patented technology

The invention relates to the technical field of quartz product measurement, and particularly provides a quartz product diameter measurer and a quartz product diameter measuring method, and the quartz product diameter measurer comprises a clamping mechanism, a moving table, a supporting guide mechanism and a laser outer diameter measuring mechanism. According to the invention, the clamping mechanism, the laser outer diameter measuring mechanism and the supporting and guiding mechanism cooperate with each other, so that the laser outer diameter measuring mechanism measures the diameter of the quartz rod in the circumferential direction in the process that the clamping mechanism drives the quartz rod to rotate axially; meanwhile, the mobile station drives the laser outer diameter measuring mechanism to move in the axial direction of the quartz rod through the supporting and guiding mechanism to measure the diameter, so that the diameter measurement of the quartz rod in the axial direction and the circumferential measurement of different axial positions are realized, the comprehensiveness of the diameter measurement of the quartz rod is improved, and the measurement result has representativeness; and the precision of diameter measurement of the quartz rod is improved.

One or more devices are provided that are configured to detachably engage within a modular system. The one or more devices are positionable to provide a support structure upon which work can be performed.

The invention relates to the technical field of valve body sealing performance detection, and discloses adjusting valve body sealing performance detection equipment, which comprises a workbench, and is characterized in that the upper surface of the workbench is fixedly connected with an opening sealing box; a first sealing and clamping assembly and a second sealing and clamping assembly which are used for sealing and clamping the two ends of the valve body are arranged on the upper surface of the workbench and located on the two sides of the opening sealing box correspondingly, and a driving assembly which enables the first sealing and clamping assembly and the second sealing and clamping assembly to move synchronously is arranged on the lower surface of the workbench. According to the invention, three openings of the valve body can be respectively sealed and clamped, three interfaces can be effectively sealed, a complete sealed cavity is formed to facilitate pressure testing, and the valve body pressure testing device can flexibly adapt to valve bodies of different models and specifications and is convenient to use. And the axes of the two ends of the valve body can be kept parallel to the axis of the first sealing clamping assembly and the axis of the second sealing clamping assembly, the sealing face and the contact face of the valve body are evenly pressed, and the sealing reliability is remarkably improved.

The invention relates to the technical field of steel structure construction, and discloses a large-span steel structure high-altitude slippage real-time monitoring mechanism based on multi-sensor fusion, comprising two slippage supports which are slidably arranged on a steel structure slippage track and are used for supporting a large-span steel structure; the detection assembly is movably arranged between the two sliding supports, located at the bottom of the steel structure and used for detecting the midspan curvature of the steel structure; the supporting plate is movably arranged between the two sliding supports and used for supporting and protecting the large-span steel structure; the driving assembly is arranged on the sides, close to each other, of the two sliding supports and used for driving the supporting plate to move at the bottom of the steel structure. The large-span steel structure high-altitude slippage real-time monitoring mechanism based on multi-sensor fusion can effectively solve the problem that in the prior art, a large potential safety hazard possibly exists due to deformation and damage in the slippage construction process of a large-span steel structure.

The invention discloses a positioning and clamping device for automobile part machining, and relates to the technical field of clamping equipment.The positioning and clamping device comprises clamping mechanisms, the clamping mechanisms are distributed and installed on a positioning disc, multiple sets of centering clamping grooves are annularly distributed in the positioning disc, two sets of parallel clamping grooves are further formed in the positioning disc in a penetrating mode, and each clamping mechanism comprises a rotating screw rod; the rotating screw is connected with the driving assembly, a first matching block and a second matching block are arranged at the two ends of the rotating screw respectively, a threaded sleeve is installed on the rotating screw in a meshed mode, a lifting frame is arranged on the threaded sleeve, and a telescopic air cylinder and a clamping assembly are installed on the lifting frame. The rotating screw is controlled to rotate through the telescopic rotating motor and the lifting frame, so that a centering clamping mode and a parallel clamping mode are switched, rapid power switching before and after clamping mode switching is achieved in combination with the power switching mechanism, power system arrangement is optimized, and clamping and positioning of parts of different shapes and different sizes are achieved.

The invention provides a workpiece carrying table and semiconductor detection equipment. The workpiece carrying table comprises a lifting assembly, a jacking assembly, a reversing assembly and a driving mechanism. The lifting assembly comprises a lifting inclined face and a bearing face which are opposite in the height direction of the workpiece carrying table. A jacking inclined plane is arranged at the bottom of the jacking assembly, a supporting column is arranged at the top of the jacking assembly, and the inclined plane where the jacking inclined plane is located intersects with the inclined plane where the lifting inclined plane is located; the reversing assembly is in sliding fit with the lifting assembly and the jacking assembly. The driving mechanism comprises a transmission part and a linear driving part, the transmission part abuts against the lifting inclined face and the jacking inclined face, the linear driving part is connected with the transmission part, and the driving direction of the linear driving part intersects with the guiding direction of the reversing assembly. The lifting assembly and the jacking assembly share one driving mechanism, the structure is simple, transmission is smooth, and accurate cooperative operation of the lifting assembly and the jacking assembly can be achieved.

An edge guide attachment for a drill guide having a base having a bottom defining a bottom plane includes a first mounting arm, a fence, and a ruler. The first mounting arm is configured to mount to the base of the drill guide. The fence has a workpiece abutment surface extending below the bottom plane when mounted to the drill guide such that the workpiece abutment surface can engage an edge of the workpiece when the base rests on a surface of the workpiece. The fence is adjustably positionable along the first mounting arm. The ruler is fixably attachable to the base and has measuring demarcations thereon for indicating a spacing of the abutment surface from a predetermined location of the drill guide. The fence is movable relative to the ruler when the ruler is attached to the base.

The invention discloses photo-thermal backboard optical flatness detection equipment, and relates to the technical field of optical flatness detection equipment, the photo-thermal backboard optical flatness detection equipment comprises a placing rack, a photo-thermal backboard body is placed on the placing rack, convex edges are integrally formed on the two sides of the front side and the back side of the photo-thermal backboard body and the two sides of the photo-thermal backboard body, and the convex edges are arranged on the front side and the back side of the photo-thermal backboard body. A plurality of sets of installation frames used in cooperation with the convex edges are fixed to the containing frame, an auxiliary assembly used in cooperation with the photo-thermal back plate body is arranged on the containing frame, and the photo-thermal back plate body is effectively limited conveniently and rapidly in a pressing and adsorption dual-positioning mode; the photo-thermal backboard body can be in a center state on the placing frame while being limited, more accurate detection is facilitated, a pneumatic driving mode is adopted in the whole process, buffering force can be effectively given to the photo-thermal backboard body when the limiting plate makes contact with the photo-thermal backboard body, deformation of the photo-thermal backboard body caused by hard collision is avoided, and the service life of the photo-thermal backboard body is prolonged. And the precision of later detection is further improved.

The invention relates to the technical field of bearing detection, and discloses a shield tunneling machine bearing performance testing device which comprises a supporting table, a motor is fixedly connected to the bottom of the supporting table, a placing ring is fixedly connected to the top of the supporting table, and a fixing plate is fixedly connected to the top of the supporting table. A hydraulic cylinder is started to stretch out to drive a pushing ring to descend to make contact with a spring ring, the spring ring descends, a first connecting rod rotates, a clamping block is pushed to move towards the inner wall of a bearing inner ring, the spring ring descends to drive a sliding rod to descend, a sliding ring descends to extrude gas in a fixing barrel, and the clamping block drives a gas conveying pipe to move; when the three clamping blocks make contact with the inner wall of the bearing inner ring preliminarily at the same time, the gas conveying pipe can be separated from the blocking piston, high-pressure gas can enter the gas conveying pipe, the spring pressing plate is pushed to descend, the top of the bearing inner ring is extruded, the bearing inner ring can be further restrained by pressing the clamped position of the bearing inner ring, and the bearing inner ring is prevented from being damaged. And the clamping device is effectively prevented from deviating in the clamping process.

A vehicle mounted load carrier can include a hub, a support member, a tilt release mechanism, and atilt memory actuator. The support member rotatably can couple to the hub. The tilt release mechanism can couple to the support member. The tilt release mechanism can include a locking arm configured to move between a locked configuration and a released configuration. In the locked configuration the support member can be fixed relative to the hub. In the released configuration the support member can rotate between a first position and a second position. The tilt memory actuator can moveably couple to the hub or the support member. The tilt memory actuator can be configured to maintain the locking arm in the released configuration when the locking arm is actuated from the locked configuration to the released configuration.

The utility model provides a car body shell adjustable assembling platform which comprises a base, a working table arranged on the base and a driving air cylinder driving the working table to turn over, a movable supporting column device is arranged on one side of the base and comprises a lead screw lifting machine, a servo motor and a movable support assembly, the lead screw lifting machine is arranged on the base, and the servo motor is arranged on the movable support assembly. The lead screw lifter is driven by a servo motor to ascend and descend, a movable support assembly is arranged on a lifting head of the lead screw lifter and comprises a hinge seat, a hinge block and a sliding supporting plate, and the lead screw lifter adjusts the height of the movable support assembly and enables the sliding supporting plate to be attached to the supporting plate at the bottom of the overturned workbench. Adjustment of the supporting angle of the workbench is met, so that the workbench can adapt to overturning at different angles.

The utility model relates to the technical field of insulator scanning, in particular to a self-adaptive locking and adjusting insulator scanning clamping device which comprises a box body, a clamping assembly is arranged in the box body and comprises a plurality of supporting columns, and the supporting columns are fixedly installed on one side of the bottom in the box body. A base plate is fixedly mounted at the top end of the supporting column, and a three-jaw chuck is arranged at the top of the base plate. According to the self-adaptive locking and adjusting insulator scanning and clamping device, the clamping assembly, the supporting column, the chassis, the three-jaw chuck, the stand column, the adjusting lead screw, the movable disc, the clamping mechanism, the top disc, the driving mechanism, the supporting frame, the electric guide rail, the scanning mechanism, a fixed block, a spring, a guide rod, a movable block, a clamp, a through hole, a servo motor, a worm, a limiting block and a worm wheel are used in cooperation; in the operation process of the device, insulators with different heights can be effectively limited by automatically adjusting the height of the movable disc.

The present disclosure concerns a sawhorse. More particularly the disclosure concerns a sawhorse configured with an articulation system.

An intelligent electric meter digital manufacturing platform based on intelligent manufacturing includes: an electric push rod fixedly disposed in a frame and a testing machine disposed on the electric push rod. The testing machine includes a box fixedly disposed on a telescopic shaft of the electric push rod and a testing component disposed in the box. A first pulley drives two ends of a pulling rope to move from a middle end of a side wall of the pulling rope through driving of a servo motor. This makes an end of the pulling rope pull a testing probe to move upwards, the other end of the pulling rope pull the other testing probe to move downwards, allowing it move to a bottom of the box. This design avoids affecting testing efficiency due to the need to replace or maintain the testing probes, facilitating subsequent testing of an intelligent electric meter.

A power tool stand comprises a base; a projecting frame connected to the base; and a power tool carriage moveably mounted on the projecting frame. The power tool carriage comprises a first interface arranged to electrically connect with a removeable power tool and a second interface in electrical connection with the first interface and arranged to electrically connect with a removeable battery.

The invention provides a maintenance tool suitable for high-precision positioning of a space solar wing. The maintenance tool comprises a clamping positioning tool and an electric drilling tool. The clamping and positioning tool comprises a clamping assembly, a handle fixing assembly and an angle positioning assembly. The clamping assembly is used for clamping the space solar wing and providing an alignment window corresponding to a to-be-maintained part on the space solar wing; the handle fixing assembly provides extra pressure for the clamping assembly after the clamping assembly clamps the space solar wing, and reliable fixing of the space solar wing is achieved. The angle positioning assembly drives the electric drilling tool to move to the alignment window; the electric drilling tool comprises a motor driving part, a drilling part and a protection part. The protection component is used for providing outboard protection for the drilling component in a non-operation stage, and during operation, the protection component is taken down, and a tool bit of the drilling component is aligned to a drilling area of outboard equipment; the motor driving part is used for providing stable rotation output in the drilling direction; and the drilling component takes the output of the motor driving component as the input to ensure that the tool bit is always kept in close contact with an object through the applied downward pressing acting force in the operation process to complete drilling maintenance.

The utility model discloses an automobile part overturning tool, and relates to the technical field of automobile part machining. Comprising a machining turnover mechanism, the machining turnover mechanism comprises a part machining table, a machining control panel is mounted on the surface of the part machining table, mounting turnover assemblies are fixedly mounted on the two sides of the top of the part machining table, and a machining supporting assembly is fixedly mounted on the top of the part machining table; the machining supporting assembly is located between the two installation overturning assemblies, and a chip removal through groove is formed in one side of the top of the part machining table. Compared with the prior art, the automobile parts can be clamped and installed, the parts can be stably clamped and limited, the stability of the parts in the follow-up machining process is improved, the post-machining quality of the parts is improved, meanwhile, the parts can be stably overturned, the parts can be pressed in the overturning process, and the machining efficiency of the parts is improved. And the overturning stability of the parts is improved, and the practicability of the device is improved.

The utility model discloses a turnover machining tool, relates to the technical field of machining, and solves the problems that the two ends of a workpiece are clamped by a machining tool through a clamping device, so that the clamped position is blocked by the clamping device, and the part is inconvenient to machine. A first supporting plate and a second supporting plate are symmetrically and fixedly mounted at the two ends of the top face of the base correspondingly, a first rotating plate and a second rotating plate are rotationally connected into the left side wall of the first supporting plate and the right side wall of the second supporting plate correspondingly, and air cylinders are fixedly mounted on the side walls of the first rotating plate and the second rotating plate correspondingly; the clamping plates are fixedly connected to output shafts of the air cylinders correspondingly, a first reciprocating motor is fixedly installed on the right side wall of the first supporting plate, the two clamping plates are arranged to completely clamp the side walls of the two ends of a workpiece, the top faces and the bottom faces of the two ends of the workpiece are exposed, and the workpiece can be machined conveniently.

The H-shaped steel base comprises a base plate, the bottom face of the base plate is fixedly connected with supporting legs, the upper surface of the base plate is movably connected with a limiting strip, the upper surface of the limiting strip is provided with a guide groove, the upper surface of the limiting strip is fixedly connected with a positioning plate, and the positioning plate is fixedly connected with the supporting legs. A damping rotating shaft is arranged on the upper surface of the positioning plate, a bearing plate is arranged on the damping rotating shaft, and a lifting screw rod is in threaded connection with the surface of the bearing plate. By arranging a movable groove, a two-way screw rod, a movable block and a second bearing, force can be conveniently transmitted to a limiting strip, the limiting strip horizontally moves, the horizontal position of the limiting strip is controlled, the base can be matched with H-shaped steel of different widths, and by arranging a damping rotating shaft, a bearing plate, a lifting screw rod, a rotating disc and a U-shaped plate, the H-shaped steel is clamped in cooperation with the limiting strip; and therefore, the base has the effect of preventing the H-shaped steel from deviating in the machining process.

The invention belongs to the technical field of wood processing equipment, and particularly relates to a linkage woodworking auxiliary instrument which comprises a working table, mounting supports are arranged below the working table, two sets of supporting foot stools are hinged between the two mounting supports, one set of supporting foot stools are locking foot stools, and the other set of supporting foot stools are locking foot stools. A locking assembly capable of guaranteeing stable unfolding of the supporting foot stand is arranged between the supporting foot stand and the two installation supports, the locking assembly comprises a turnover plate hinged between the two installation supports, locking matching plates are arranged at the two ends of the turnover plate, and the locking matching plates are detachably connected with locking pins on the supporting foot stand in a clamped mode so that rotation locking and unlocking of the locking foot stand can be achieved. Linkage limiting assemblies are further arranged between the two sets of corresponding locking matching plates and the mounting support. According to the linkage limiting assembly, the linkage between the locking pin and the locking assembly and the linkage between the locking pin and the locking foot stool are deepened, the operation convenience of rotating and folding the supporting foot stool is greatly improved, and meanwhile the convenience of unfolding operation is kept.

The invention relates to an independent workstation for forward installation of bicycles. Comprising a base used for being placed on the ground, a telescopic electric cylinder with the bottom connected with the base, a rotating base installed on the top of the telescopic electric cylinder and capable of rotating in the horizontal plane relative to the telescopic electric cylinder, and a horizontal rotating locking mechanism used for locking the rotating base. The rotating arm is installed on the rotating base and can rotate in a vertical plane relative to the rotating base, the vertical rotating locking mechanism is used for locking the rotating arm, and the clamping unit is installed on the rotating arm. According to the independent work station for forward installation of the bicycle, lifting of a clamped part and rotation in the horizontal plane and the vertical plane can be achieved, and the whole bicycle can be assembled only through one work station; in addition, the telescopic electric cylinder is adopted for automatic lifting, discharging is convenient, and more time and labor are saved; according to the trundle assembly, switching between moving and fixing can be rapidly achieved by treading down or kicking up the pedal, operation is easy and rapid, and the working efficiency and the customer satisfaction degree can be improved.

The invention relates to the field of production of basalt fiber composite rib meshes, in particular to automatic overturning equipment and method for basalt fiber composite rib mesh production. Comprising a turnover table composed of a front supporting plate, a rear supporting plate and a supporting frame, a turnover unit is arranged between the upper ends of the front supporting plate and the rear supporting plate, and a workbench is arranged on the left side of the turnover table. According to the device, the uniformly distributed fixing assemblies synchronously press and fix the mesh in a multi-point and uniformly-dispersed manner, the fixing efficiency is improved, meanwhile, the fixing assemblies are matched with reinforcing steel bar sections on the periphery of the corresponding meshes in a clamping and pressing manner through the clamping groove plates distributed in the circumferential direction, stable and powerful pressing and limiting are carried out on the mesh, and the fixing efficiency is improved. According to the mesh overturning device, the mesh can be effectively prevented from shaking or bending in the subsequent overturning process, the stability of the mesh is improved, the mesh can be fixed, and the mesh is prevented from being deformed or damaged in the overturning process.

The invention discloses a meter-scale leveling and aligning static pressure rotary table shaft system structure expanding torque in the radial direction and a method. The meter-scale leveling and aligning static pressure rotary table shaft system structure comprises a base, a lower plate, an upper plate, a leveling structure, an aligning structure and a workbench. A lower plate is arranged on the base, an upper plate is arranged on the lower plate, the upper plate is fixedly connected with a rotor, and the rotor is directly connected with a motor rotor; the top end of the upper plate is vacant, and the bottom end of the upper plate is provided with an adsorption structure and a supporting surface and matched with the top end of the lower plate; the leveling structure and the aligning structure are both mounted on the lower plate and are arranged on the same horizontal plane; according to the rotary table shaft system structure, a torque transmission path expanding in the radial direction is adopted, the extending amount of an aligning ball head is controlled through an aligning structure, a lower plate is promoted to move in the opposite direction of the extending direction of the aligning ball head relative to an upper plate, and axial aligning of a workbench and a rotor is achieved; and the leveling structure is used for positioning the plane of the workbench through three points, so that the workpiece is leveled. According to the invention, the leveling and aligning functions of large-size high-precision rotary tables with meter-scale calibers and above can be realized, and the table-board distance of the rotary table is reduced.

The utility model relates to a fixing device for pump part machining, and belongs to the technical field of pump part fixing. The technical scheme is mainly used for solving the problem that a pump body part is damaged during machining. Comprising a supporting platform, the bottom of the supporting platform is rotationally connected with a rotating shaft through a bearing, the end of the rotating shaft is fixedly connected with a displacement mechanism, the end of the displacement mechanism is fixedly connected with a clamping mechanism, and the clamping mechanism slides above the supporting platform; wherein the displacement mechanism comprises a rotating disc fixed at the end part of the rotating shaft. Through the cooperation of the rotating disc, the arc-shaped groove, the sliding rod, the movable rod and the fixed rod, the clamping mechanism can be driven to move integrally, through the arrangement of the mode, a pump body can be rapidly clamped and fixed in multiple directions, the problem that due to the fact that the structure of the pump body is irregular, the pump body is tedious to fix is solved, and the working efficiency is improved. And the machining precision of the pump body part is further improved.

The invention discloses a PTFE sheet press-fitting and sealing performance detection integrated device and a method thereof, and belongs to the technical field of sealing element production. A support and a control mechanism are installed on the rack, a pressing head is installed on the control mechanism and is in sliding connection with a stand column of the support through the control mechanism to complete movement, a fixed base is installed in the middle of a bottom plate of the support, the fixed base and the pressing head are correspondingly arranged in a matched mode, and a sealing detection base is arranged in the fixed base. The method comprises the following steps: setting parameters; assembling the workpiece; press fitting is started; coaxial positioning is carried out; performing press fitting detection; testing the sealing performance; ejecting and unloading; and pressing in multiple directions. The problem of coaxiality deviation caused by tolerance accumulation in a traditional process is solved, accurate regulation and control of press fitting interference magnitude are achieved, batch stability is ensured, process integration and automatic sorting of unqualified products are achieved while the coaxial precision is improved, and the production efficiency is improved. And the technical bottlenecks of difficult coaxiality control, large interference magnitude fluctuation and detection redundancy in high-precision press fitting are systematically overcome.

The utility model relates to the technical field of workpiece positioning equipment, and discloses a positioning mechanism for glass production, which comprises a bearing table, a plurality of racks are arranged on the bearing table, the plurality of racks are arranged along the circumference of the center point of the bearing table in an array manner, and the upper side surface of each rack is provided with a clamping unit for positioning and clamping glass. The lower surface of the bearing table is provided with a driving unit for simultaneously driving the racks to get close to or away from each other; the clamping unit comprises a fixing base arranged on the upper side face of the rack, and a movable moving plate and a fixed plate with the fixed position are arranged on the upper side face of the fixing base. According to the glass clamping device, the racks are arranged, the clamping units are arranged on the racks, the driving unit drives the racks to move oppositely at the same time, the movable plate drives the elastic pressing wheel to press glass on the bearing table when moving, and the center position of the glass is aligned with the center position of the bearing table conveniently; and the glass is fixed immediately after alignment, so that the secondary processing efficiency of the glass is improved.

The utility model discloses a positioning tool for power battery module detection, which belongs to the technical field of power battery module detection and comprises a workbench, a motor is fixedly mounted at the bottom of the workbench, and an output end of the motor extends to an inner cavity of the workbench and is fixedly connected with a first bevel gear. A transmission rod is arranged in an inner cavity of the workbench, a second bevel gear meshed with the first bevel gear fixedly sleeves the middle of the outer side of the transmission rod, the left side and the right side of the transmission rod penetrate through the workbench and are fixedly sleeved with first rotating wheels, and base plates are fixedly installed on the left side and the right side of the top of the workbench. According to the utility model, the power battery module can be rapidly clamped and limited, the power battery module is prevented from deviating during detection, the stability of the power battery module during detection is improved, the power battery module can be buffered and protected, the vibration impact force of the positioning tool in the use process is effectively eliminated, and the detection accuracy is improved. And the practicability of the device is improved.

A work support has an extendable support beam for spanning between a pair of leg assemblies. The extendable support beam includes one or more elongated rails having a first end, a second end, an upper edge, a lower edge, a middle portion disposed between the upper edge and the lower edge, where the upper edge and the lower edge each extend away from the middle portion and form a channel having an interior surface and an exterior surface, and a t-track extending longitudinally along the interior surface. The work support includes the extendable support beams and a leg mount disposed between the pair of elongated rails, and a pair of legs pivotally coupled with the leg mount and moveable between a storage position where the pair of legs are secured within a cavity, and a working position.

The utility model belongs to the technical field of steel structure welding auxiliary equipment, and particularly relates to a device for preventing welding deformation of a partition plate and a reinforcing ring, which comprises an operating platform, the partition plate is arranged on the operating platform, a welding hole is arranged in the middle of the partition plate, the reinforcing ring is arranged in the welding hole, and two steel angles are arranged above the partition plate and respectively positioned on two sides of the welding hole. The two ends of each angle steel extend out of the partition plate and are fixedly connected with the operation platform through studs. A plurality of vertical plates are further fixedly arranged on the operation platform and arranged in the reinforcing ring in the circumferential direction of the reinforcing ring in an array mode, an adjusting column penetrates through each vertical plate in a threaded mode, and one end of each adjusting column perpendicularly faces the inner wall of the reinforcing ring. The partition plate is fixed above the operation platform through the angle steel, the reinforcing ring is fixed through the cooperation of the vertical plates and the adjusting columns, and deformation or displacement in the welding process of the partition plate and the reinforcing ring is avoided.

The invention discloses an auxiliary clamping device for driver testing, and belongs to the technical field of clamping devices.The auxiliary clamping device for driver testing comprises a working rack, a working table is fixedly installed above the working rack, and a driving guide mechanism is arranged on one side of the upper surface of the working table; the driving guide mechanism comprises a plurality of lifting air cylinders fixedly connected with the upper surface of the working table top, telescopic rods are slidably connected to the upper ends of the lifting air cylinders correspondingly, and fixed bases are fixedly connected to the upper ends of the telescopic rods. According to the invention, through the synergistic effect of the driving guide mechanism and the auxiliary connecting mechanism, the device is higher in automation performance, and through the design of the cooperative effect of the test clamping mechanism and the limiting structure, the test accuracy is improved. Therefore, the driver can be protected to the greatest extent while the situation that the testing work is interrupted or inaccurate due to looseness or movement of the driver is avoided.