39results about How to "Avoid accidental movement" patented technology

The utility model relates to crystal pulling adding and dosing device field, especially in the process of adding dosing device of crystal pulling. Including hopper, one end of hopper is equipped with moving structure, moving structure includes connecting rod, connecting rod is connected with hopper threadedly, the one end fixedly connected with connecting frame of connecting rod away from hopper, the arc surface slidingly connected with outer storehouse of connecting frame, the arc surface fixedly connected with slide post of connecting rod, the arc surface fixedly connected with connecting block of connecting rod, the one end fixedly connected with the baffle ring of outer storehouse close to hopper, the arc surface swing joint of outer storehouse has the slip ring, the inside fixedly connected with two magnetic blocks of slip ring. The utility model provides a kind of dosing device of adding in the process of crystal pulling, with the device that it is convenient to fit manual operable, meet when dosing bin loading, rotate and retract function, the whole and single crystal furnace are connected and the advantages that good sealing function.

This utility model belongs to the field of headband technology, and particularly relates to an adjustable headband. Its key features include: a first headband, of which there are two sets; a horizontal adjustment member, the two ends of which are respectively connected to the two sets of the first headband; a second headband, of which there are two sets, each set having a connecting member, and both sets of the second headband are slidably connected to the two sets of the first headband via the connecting members; the second headband also has a fixing member; and a plush cover, which is fitted over the first and second headbands and fixed to the second headband via the fixing member. Compared with the prior art, this utility model has better size adjustment capability to adapt to people with different head shapes.

The utility model relates to the technical field of positioning devices, in particular to a positioning device for machining a four-axis fuselage rod of an unmanned aerial vehicle, which comprises a movable clamp block, each fixing mechanism comprises a sliding chute, a fixing plate, a spring and a fixing groove, the fixing plates at the two ends of the movable clamp block are pressed to fit and push a protective cover, and when the fixing grooves correspond to the fixing plates, the protective cover is fixed. A fixing plate enters a fixing groove through the elastic force of a spring, reverse operation during mounting and dismounting of the protective cover is achieved, workers can quickly complete mounting and dismounting of the protective cover conveniently, when internal parts of the protective cover need to be maintained, the protective cover can be quickly dismounted, the operation convenience is improved, meanwhile, the protective cover can shield an adjusting screw, and the working efficiency is improved. According to the positioning device, impurities such as cuttings and cooling liquid generated in the machining process can be prevented from making contact with the adjusting screw, abrasion of the impurities to the screw is avoided, the probability of screw failure caused by invasion of the impurities is reduced, the service life of the adjusting screw is guaranteed, and then the stability of the whole positioning device is guaranteed.

The utility model discloses a swing type rotating gun welding machine which comprises a supporting frame, a swing mechanism is arranged on the supporting frame, the swing mechanism comprises a rotating shaft, an installation frame, a swing frame, a sliding sleeve, a large rack, an air cylinder and a large gear, and a bunching mechanism is arranged on the swing frame. The bunching mechanism comprises a connecting seat, a bunching sleeve, a screw sleeve, screws, bunching clamps, a tension spring, a push plate, a pinion, a transmission sleeve, a pinion rack and a limiting mechanism, the connecting seat is fixed in the swing frame, the combined design of the connecting seat, the bunching sleeve and the screw sleeve is adopted, the distribution of the screws and the bunching clamps is matched, a reliable cable management system is formed, and the service life of the cable management system is prolonged. Through meshing transmission of the small gear, the transmission sleeve and the small rack, synchronous movement of the multiple sets of bunching clamps is achieved, the surface of the air pipe is protected through the design of the soft cushion, the limiting plate provides a stable movement track for the bunching clamps, and the whole bunching system can effectively manage various cables and prevent winding and damage.

This utility model belongs to the field of chemical experimental technology and discloses a safe management storage cabinet, including a cabinet device for independently placing chemical reagents. The cabinet device is equipped with a moving device for positioning and a retrieval device for inserting and placing chemical reagents. The cabinet device includes a cabinet body, with an access component at the front for improved safety and individual access to chemical reagents. Several storage slots are evenly distributed on the rear wall of the cabinet body, and reagent racks are placed in the storage slots. The moving device includes a moving frame. The retrieval device includes a selection component for reciprocating movement, with a swing motor installed on the selection component, and an insertion / removal bracket installed at the output end of the swing motor. This utility model's safe management storage cabinet, by independently placing chemical reagents and allowing unified access through the access window, reduces the risk of frequent opening and closing of the cabinet door, improving the safe storage of chemicals such as explosives, highly toxic substances, or volatile chemicals.

The invention discloses a modular electromechanical pipeline roof crossing protection device and a construction method, the modular electromechanical pipeline roof crossing protection device comprises a fixed base, a concrete structure floor and a roof layer, the fixed base is pre-buried in the concrete structure floor and the roof layer, and a water stop wing ring is arranged on the periphery of the fixed base; the protective outer cylinder is fixedly connected with the fixed base, the protective outer cylinder is provided with an outwards-turned flange edge, a valve is arranged in the middle of the protective outer cylinder, and the valve is connected with the side wall of the protective outer cylinder through a fastening assembly. The fireproof plugging module is arranged on the inner side wall of the fixed base; the outer side of the fixed base is fixedly connected with the heat preservation outer sleeve. The fireproof plugging module capable of being pulled, inserted and replaced is arranged, the excellent fireproof performance is achieved, the module is formed by compounding a ceramic fiber felt, an expanded graphite strip and fireproof glue or is composed of rock wool, fireproof mud and a fireproof bag according to different pipeline types, reliable fireproof plugging is ensured, and the chimney effect in a fire disaster is effectively prevented.

This utility model relates to the field of animal disease sampling technology and discloses a sampler for tissue samples from frozen dead cattle and sheep, including an electric drill body, a toothed disc a, a toothed disc b, a drill rod, and an installation sleeve; the surface of the installation sleeve has two vertical grooves symmetrically opened, and the inner cavity of the two vertical grooves is slidably connected to a push plate through a guide rod, and a compression spring a is provided between the push plate and the installation sleeve; the surface of the installation sleeve has two horizontal grooves symmetrically opened, and a composite locking structure of "locking block + compression spring b" is adopted: when the push plate moves to the sample storage position, the locking block, under the continuous elastic force of the compression spring b, resets along the guide groove through the guide block, and its top is tightly fitted with the surface of the guide rod to form a rigid limit. When the electric drill rotates at high speed and generates centrifugal force, the locking block can stably lock the guide rod, completely avoiding accidental movement of the push plate, ensuring stable storage of the sample in the sample storage space, effectively preventing loss or contamination caused by premature sample ejection, and significantly improving sampling reliability.

This utility model relates to the field of agricultural product processing equipment technology, specifically to a quick-change device for peeling knives in konjac. It includes a knife storage box with two symmetrical slots near the top and bottom. The two slots near the top communicate with the outside on the left, and the two slots near the bottom communicate with the outside on the right. A different functional blade is slidably installed in each of the four slots. By providing slots with different communication directions at the top and bottom of the knife storage box, different functional blades can extend from the left and right sides respectively, meeting the needs of multiple blades during konjac peeling. A push button allows the operator to slide the blade, and the magnetic connection between the arc-shaped magnetic plate and the push button secures the blade when it extends or retracts, preventing accidental movement during use. This achieves quick switching and stable fixing of different functional blades, improving the convenience and efficiency of konjac peeling operations.

This utility model relates to the field of industrial design technology and discloses a binding device for industrial design with rapid positioning function. It includes a base plate, a mounting frame, and a fixing plate. A support frame is fixedly connected to the middle of one side of the upper surface of the base plate. A hydraulic rod is fixedly connected to the middle of the upper surface of the support frame. The output end of the hydraulic rod passes through the support frame to its lower end and is fixedly connected to the middle of the upper surface of the mounting frame. A mounting groove is formed in the middle of the lower surface of the mounting frame. In this utility model, a servo motor drives a threaded rod to convert rotational motion into linear displacement of a sliding block. This design enables rapid positioning of the punching needle, shortening positioning time and improving overall work efficiency. Before punching or subsequent binding, an electric telescopic rod drives a pressure plate downwards, firmly pressing the paper onto the base plate. This pressing action effectively prevents accidental movement of the paper during punching or binding, ensuring the accuracy of the punching position.

This utility model relates to a support for stirring organic carriers, comprising: a vertical rod; a drill fixing device that can slide up and down along the vertical rod and includes a height adjustment device and a slot; a clamping mechanism including a pair of clamping devices; casters; a locking device including a latch, the latch moving between a locked position and an unlocked position of the casters; the drill fixing device is provided with a detection device for detecting the working or non-working state of the drill, the locking device including a drive mechanism and a reset mechanism, wherein when the drill is in the working state, the drive mechanism moves the latch to the locked position, and when the drill is in the non-working state, the reset mechanism moves the latch to the unlocked position. The support according to this utility model significantly improves the stability, safety, and operational efficiency of the stirring process.

The utility model discloses a Chinese embroidery connecting bracket device, which relates to the technical field of embroidery, and comprises a cross rod I, two connecting rods are arranged on one side of the cross rod I, a cross rod II is sleeved on the outer surfaces of the two connecting rods, the cross rod II is in sliding connection with the two connecting rods, and two fixing components are arranged on the upper surface of the cross rod II. Through cooperation of a connecting rod, a second cross rod, bonding assemblies and an auxiliary assembly and sliding cooperation of the second cross rod and the connecting rod, the second cross rod can be adjusted to a proper position according to the size of the embroidery cloth, then through the two bonding assemblies, rapid installation and front-back tightening of the embroidery cloth can be achieved, and through cooperation of a guide rail and a sliding block in the auxiliary assembly, the embroidery cloth can be conveniently and rapidly installed. The embroidery cloth mounting device is simple in structure and can adapt to embroidery cloth of different sizes, the left side and the right side of the embroidery cloth can be clamped through cooperation of a clamping frame, a first stud, a first rotary knob, a clamping plate and a limiting sliding rod, finally, effective tightening of the left side and the right side is achieved through an elastic belt, and therefore it is guaranteed that the mounted embroidery cloth is flat.

The utility model relates to an efficient knitted fabric knitting machine, which belongs to the technical field of knitting machines and comprises a knitting machine body, a moving structure is arranged on the knitting machine body and comprises a moving storage box fixedly mounted on the lower surface of the knitting machine body, and a motor is fixedly mounted in the moving storage box. A threaded rod is fixedly mounted on an output shaft of the motor, a lifting plate is slidably mounted in the movable storage box, and a supporting column is fixedly mounted on the lower surface of the lifting plate. According to the efficient knitted fabric knitting machine, a motor is started to drive a threaded rod to rotate to push a lifting plate to ascend and descend in a movable storage box, and when the lifting plate descends, supporting columns and universal wheels are driven to extend downwards, so that the knitting machine body is separated from the ground, and a worker can conveniently conduct moving operation; after the knitting machine is moved to a proper position, the lifting plate ascends, the universal wheels are retracted, and the knitting machine body is stably placed on the ground again, so that the convenience of transferring the knitting machine among different working positions is greatly improved.

The invention discloses an anti-vibration grinding machine base structure, and belongs to the technical field of grinding machines. An anti-vibration grinding machine base structure comprises a supporting base, a control table is connected to one side of the upper end of the supporting base, and through cooperation of a third circular guide rod in a tail fixing assembly and a fourth reset spring, when grinding force is increased instantaneously, through axial sliding of a third sliding block and deformation of the spring, the grinding force can be adjusted; the transverse moving assembly and the vertical moving assembly both adopt the double-elasticity design of a reset spring and a third reset spring, high-frequency vibration generated by high-speed rotation of the grinding wheel and low-frequency impact caused by cutting force fluctuation can drive a second sliding block to slightly move along a circular guide rod through a rectangular moving block, and therefore the grinding wheel is driven to rotate in the axial direction. The springs are alternately compressed and stretched, vibration energy is dissipated through internal friction, meanwhile, a fifth reset spring of the fixing assembly is matched with elastic attachment of a semi-arc fixing block, local micro vibration of the workpiece can be absorbed, and multi-stage attenuation of radial vibration is achieved.

The utility model discloses a food processing frying machine which comprises a base, a heating device is arranged in the base, a frying pan is arranged above the heating device, a support is arranged on the base, a stirring assembly is movably arranged on the support, the support comprises a lower stand column and an upper stand column, and the upper stand column is rotationally connected to the upper portion of the lower stand column through a rotating shaft. The rotating shaft is arranged on one side away from the stirring assembly; a positioning plate with a mounting hole and a first clamping part is arranged in the upper stand column, a positioning column is fixedly connected in the lower stand column, a movable shaft pin is further arranged on the lower stand column, and the movable shaft pin penetrates through the mounting hole to achieve upright positioning of the upper stand column. When the movable shaft pin is pulled out, the upper stand column rotates towards the side away from the frying pan, and the upper stand column cannot continue to rotate when the first clamping part is clamped to the positioning column. A rotary fixing mechanism is arranged between the upper stand column and the lower stand column of the stir-frying machine, injury caused by accidental movement is prevented, a stirring shaft and a transmission structure are simply and conveniently connected through a positioning pin and a bolt gasket, a complex bearing structure is omitted, cost is reduced, disassembly and assembly are simplified, and cleaning and maintenance are convenient.

The utility model relates to a connector with an anti-drop mechanism, which belongs to the technical field of connectors and comprises a connector body, a connector socket detachably mounted outside the connector body and a base fixedly mounted outside the connector socket, and a fixing structure extending into the base is arranged on the upper surface of the base. And a limiting structure is arranged on the upper surface of the base. According to the connector with the anti-falling mechanism, the pull rod and the moving block move up and down to drive the connecting rod and the clamping block to realize opening and closing actions, so that the connector main body can be accurately clamped, the connection stability is ensured, the time and the cost of installation and maintenance are reduced, and the insertion rod is ensured to be inserted into the locking groove of the pull rod under the elastic force action of the spring; reliable locking force is provided, the pull rod is prevented from moving accidentally, it is ensured that the pull rod is kept stable in the locking state, looseness caused by vibration or external force is prevented, and the advantages of being good in anti-falling effect and high in practicability are achieved.

The utility model relates to injection mold technical field discloses a kind of injection mold with inclined plane ejection mechanism, including base, its top surface is fixedly installed with lower mould, the upper mould that is compatible with its is provided with above lower mould, the bottom surface four corners of the base is provided with support leg, the base is longitudinally slidably penetrated and is provided with ejector rod, and ejector rod sliding penetration is to the inner cavity of lower mould, the top surface of the base is symmetrically provided with support column, and the top of support column is fixedly installed with top plate, the top surface of the top plate is fixedly installed with electric telescopic rod, and the output shaft of electric telescopic rod sliding penetrates top plate, the output end of electric telescopic rod is fixedly connected with the top surface of upper mould, this injection mold with inclined plane ejection mechanism can guarantee after injection molding is completed automatically workpiece ejection stripping, and guarantee stable and effective injection molding operation, full-automatic stripping operation is not needed to carry out additional electric control operation, with the advantage of reducing equipment use cost.

The utility model discloses a waste cleaning device for municipal pipe network construction, which comprises a frame, a turnover mechanism, a connecting and locking mechanism and a disassembly and assembly auxiliary mechanism, the turnover mechanism comprises a rotating shaft, a turnover hopper, a rotating disc, a matching plate, a clamping rod and a clamping pipe, the connecting and locking mechanism comprises a clamping groove, an extending rod, a rotating sleeve, a gradient block, a rotating block, a spring rod and a rod hole, the overturning bucket is connected with the frame through a rotating shaft and can stably rotate, the stability of the waste overturning process is ensured, the overturning bucket can be locked when needed through cooperation of a clamping rod and a clamping pipe, and the overturning bucket is prevented from being damaged. And accidental movement of the overturning bucket caused by external force influence is avoided.

This invention provides an optical disc storage device for hierarchical data resource management, comprising: a storage box with multiple sets of symmetrically formed sliding grooves on its inner side; a mounting plate with sliders symmetrically fixed on both sides, the sliders slidingly embedded in the sliding grooves, and a placement groove on the inner side of the mounting plate; an optical disc body installed inside the placement groove; and a ejection assembly including a protrusion, a second spring, and a receiving sleeve, the protrusion being fixedly installed in the middle of the inner side of the placement groove. This invention allows the optical disc body to be placed on the receiving sleeve, and then the receiving sleeve is pressed down, causing it to be magnetically attracted and fixed, thereby moving the optical disc body into the placement groove for storage. By pulling the receiving sleeve, it is released from the magnetic attraction, and the elasticity of the second spring allows the receiving sleeve to remove the optical disc body from the placement groove, effectively preventing the optical disc body from touching the mounting plate during retrieval and thus avoiding damage to the optical disc body.

The utility model relates to the technical field of auxiliary positioning devices, in particular to an anorectal surgery auxiliary positioning device which comprises a base, a first adjusting piece is arranged at the top of the base and comprises a U-shaped fixing plate, a rectangular vertical pipe is arranged at the top of the U-shaped fixing plate, and a rectangular supporting rod capable of being adjusted up and down is arranged in the rectangular vertical pipe. A second adjusting part is arranged on the rectangular supporting rod and comprises a cross rod, a connecting ring is arranged at the bottom of the cross rod and close to the left side, the connecting ring is connected with a connecting belt, and a detachable sticky patch is arranged on the connecting belt. According to the auxiliary positioning device for the anorectal surgical operation, through cooperation of the first adjusting piece and the second adjusting piece, accurate adjustment of the position of the viscous patch is achieved, medical staff can easily adjust the height and the position of the viscous patch through the controller and the fine adjustment piece, and therefore the requirements of different patients and operations are met; by means of the design, the problem that the elastic band is not easy to control is solved, and operation flexibility and fineness are improved.

The utility model discloses a vertical acid and alkali resistant pump which comprises a base, a pump body is arranged below the base, a motor is connected above the pump body, the motor is arranged above the base, supporting piles are fixedly connected below the base through bolts, the number of the supporting piles is four, sliding grooves are formed in the supporting piles, and movable piles are arranged in the sliding grooves. A toothed plate is arranged on one side of each movable pile and connected with a gear in a meshed mode, an opening is formed in one side of each supporting pile, a fixing base is arranged on the outer side of each opening, the gears are arranged in the fixing bases, the gears are fixedly connected with rotating shafts, and the rotating shafts are connected with the fixing bases through bearings. And in cooperation with the design of the gear and the toothed plate, a user can easily adjust the height of the pump body according to actual requirements, it is ensured that the pump body is horizontally placed, and installation precision and stability are improved.

The utility model relates to the technical field of die machining, in particular to a convenient positioning tool for stamping die machining, which comprises a bottom plate, a fixing plate fixedly connected to the top of the bottom plate, a die body abutted against the surface of the fixing plate, a vertical plate fixedly connected to the top of the fixing plate, and a threaded rod rotatably connected in the vertical plate. The outer portion of the threaded rod is in threaded connection with a threaded sleeve, the side end of the threaded rod is fixedly connected with a rotating disc, the outer portion of the threaded sleeve is provided with an extrusion plate through a rotating rod, the two ends of the rotating rod are hinged to the extrusion plate and the threaded sleeve respectively, a top groove and a through groove are formed in the fixing plate, the extrusion plate is in sliding connection with the top groove, and the fixing plate abuts against the side face of the mold body. The threaded rod can be rotated to drive the threaded sleeve to move, the extrusion plate is driven to move under the action of the rotating rod, the extrusion plate abuts against the surface of the mold body, then the steel plate is driven to be inserted into the extrusion plate under the power action of the micro air cylinder, the extrusion plate can be prevented from moving accidentally, and the positioning effect on the mold body is improved.

The utility model discloses a kind of slotting device based on ball valve processing, including base, the side of base is provided with rotating mechanism, the other side of base is provided with adjusting mechanism, the side of rotating mechanism is provided with locking mechanism;The slotting device based on ball valve processing is processed by the setting of base and rotating mechanism, in the use process of the device, when ball valve body is finished, the switch of first motor is opened, rotating disc rotates, so that the ball valve body of fixed seat on finished is removed, and the ball valve body of unprocessed is moved over, when the ball valve body of unprocessed is processed, the ball valve body of finished can be removed from fixed seat, replace new ball valve body of unprocessed, realize one side processing ball valve body one side installation ball valve body, reduce waiting time between process, speed up production rhythm, improve the working efficiency of the device.

The utility model relates to paint bucket transfer equipment technical field, concretely is a kind of portable paint bucket bottom support, including underframe, its upper end is equipped with supporting plate, and two ends are equipped with support assembly symmetrically;Support assembly contains support frame, and the upper end of support frame is limited to groove, and the lower end is equipped with limiting frame and universal wheel;The both sides of supporting plate have locating groove and locking rod, and the arc-shaped groove of support frame inboard is attached to supporting plate, and locating block is inserted into locating groove in arc-shaped groove, and locking rod is inserted into locating groove and passes through the through-hole of locating block;Limiting frame has air slot and guide slot, and underframe both ends are inserted into air slot, and its guide block is slidably engaged with guide slot, and supporting plate and limiting groove have buffer pad, and support frame outside has handle, the device is convenient to unfold and store, moves flexibly, and is suitable for paint bucket transfer.

This application discloses a seat lateral movement state switching mechanism and a bus seat including the same. The mechanism is mounted on a seat frame and used to switch the seat's state. It includes: a connecting plate disposed between parallel and opposite seat frames, with a limiting stop on the connecting plate; a switching plate disposed on the connecting plate, comprising a pressing plate and an unlocking plate, with a non-zero included angle between the pressing plate and the unlocking plate; the pressing plate protruding relative to the seat frame; the unlocking plate extending between adjacent seat frames; and a limiting hole corresponding to the limiting stop on the unlocking plate, which engages with the limiting stop; the pressing plate, when pressed, can disengage the unlocking plate from the limiting stop; and an elastic element disposed on the unlocking plate, having an abutting end that abuts against the seat to provide a force for engaging the unlocking plate with the limiting stop when the pressing plate is released, thereby achieving convenient unlocking and locking of the seat.

This utility model discloses a charging pile, including a charging pile column and a first socket module. The charging pile column has an inlet end and an outlet end. The outlet end is connected to the first socket module, and the inlet end has a second socket module mounting slot. The first socket module has a telescopic component storage cavity at the end away from the outlet end. The telescopic component storage cavity is connected to a top cover structure, and the top cover structure has a low-voltage component limiting cover. This utility model relates to the field of electrical equipment. Through modular design and the setting of telescopic components, this utility model solves the problem of personalized socket module settings. By extending the installation tray structure and movable components on the charging pile column, the practicality of the product is enhanced. It is suitable for scenarios such as schools, residences, offices, and commercial locations, filling the gap in multi-functional integration of traditional charging pile products.

The utility model discloses a supporting device for a drainage pipeline, which comprises a mounting plate, a positioning block is arranged at the top of the mounting plate, the bottom of the positioning block is fixedly connected to the middle of the upper surface of the mounting plate, and the top of the positioning block has a certain radian. Through cooperative use of the mounting plate, the positioning block, the mounting hole, the groove, the turntable, a guide groove, a sliding block, a pulling handle, a sliding plate, a sliding groove, a moving plate, a through groove, a fixing frame, a stabilizing rod, a containing block, a containing groove, a fixing hole, a pull rod and a pull ring, the problem that when existing equipment is used, bolts need to be adjusted one by one by means of tools such as a wrench to be fixed is solved; the problems that in the prior art, operation steps are tedious and time-consuming, due to the fact that manual force application is difficult to standardize, the situation of uneven clamping force frequently occurs, a pipeline is not firmly fixed or locally deforms, construction in a narrow space is particularly inconvenient through a traditional fixing mode, the working efficiency is seriously affected, and meanwhile potential safety hazards are caused due to the fact that fastening is not in place exist in the prior art are solved.

The utility model discloses a kind of moxa fixed mould, including first movable arm, the second movable arm is rotatably connected on the first movable arm, elastic member is equipped between the first movable arm and second movable arm, the first movable arm and second movable arm end portion are uniformly fixedly connected with forming die, one the forming die is equipped with ejection mechanism, the side of ejection mechanism is equipped with limiting mechanism, the ejection mechanism includes rotating seat, the first rotating shaft and second rotating shaft are rotatably connected in rotating seat interior, belong to moxa processing technical field.The moxa fixed mould, by pressing initiative arm, initiative arm rotation drives driven arm rotation, driven arm rotation moves through strip-shaped slot connecting shaft, connecting shaft movement drives ejector rod movement, ejector rod movement drives top block movement, moxa ball is ejected from forming die, prevent pouring and falling and loose due to impact, moxa ball is conveniently taken out, effectively improve the convenience of use.

This utility model relates to the field of visual recognition device technology, and specifically discloses a visual recognition device for locally deployed AI models. Two round rod shafts are rotatably connected inside a warehouse mobile trolley. Two spur gears are fitted onto the outer surfaces of each round rod shaft. Four lifting seats are slidably connected inside the warehouse mobile trolley, and racks are fixedly connected inside each of the four lifting seats. A drive motor is fixedly connected inside the warehouse mobile trolley. The output shaft of the drive motor drives the two round rod shafts to rotate synchronously via a synchronous pulley and synchronous belt. The rotation of the two round rod shafts drives the spur gears mounted on both sides to rotate. The four spur gears mesh with the four racks, and the meshing of the spur gears and racks drives the lifting seats to adjust their height. The four synchronously adjusting lifting seats lift the recognition device to perform height adjustment operations. This synchronicity ensures that the recognition device receives uniform force during height adjustment, avoiding tilting or shaking caused by uneven force.