199 results about "Electric trolley" patented technology

The invention relates to the technical field of test conveying, in particular to a conveying device for cable festoon test equipment, which comprises an assembly cross beam, a horizontally arranged bottom guide rod is arranged below the assembly cross beam, and the outer side of the bottom guide rod is movably sleeved with a plurality of external assembly frames. According to the conveying device for the cable festoon test equipment, the electric trolley is connected with one end of a cable for dragging, the cable is hoisted and supported through the external assembly frame on the outer side of the bottom guide rod, the hoisting state of the cable is simulated, and operation and control are very convenient; the electric control type regulation and control locking device is movably assembled in the bottom storage adjustment frame at the lower end of the electric trolley, storage and limiting adjustment can be conducted on the external assembly frame, the adjacent positions of the external assembly frame at different positions can be changed through the electric trolley, manual adjustment is not needed, operation is easy and convenient, and control is accurate.

The utility model discloses a turntable type sand blasting device for cleaning the outer surface of a workpiece, which relates to the technical field of sand blasting devices and is characterized by comprising a sand blasting box, the outer wall of the sand blasting box is fixedly connected with a plurality of supporting blocks through supporting columns, two guide rails are fixedly mounted in the sand blasting box, and the two guide rails are fixedly connected with the sand blasting box. According to the utility model, through the arrangement of the components such as the guide rails, the electric trolley and the rotating disc, the trolley can walk and rotate, so that the position and the direction of a workpiece can be flexibly adjusted, the working efficiency is improved, the working efficiency is improved, and the working efficiency is improved. According to the sand blasting device, the rotating disc is arranged on the connecting shaft, so that the possibility that the workpiece collides with surrounding equipment and facilities is reduced, and in the sand blasting process, the rotating disc can be manually rotated around the connecting shaft through the lower hand hole according to the shape of the workpiece and the part needing to be cleaned, so that all surfaces of the workpiece can be uniformly subjected to sand blasting treatment, and the cleaning effect and comprehensiveness are greatly improved.

The utility model provides automatic flushing equipment for a farm. The automatic flushing equipment comprises an electric trolley and a fixing support fixed to the front end of the electric trolley, an electric push rod is vertically arranged at the bottom end of the fixing support, the free end of the electric push rod is fixedly connected with a connecting frame, a reciprocating rotating motor is arranged on the connecting frame, and the reciprocating rotating motor is connected with an axial support. A rotary spraying structure is installed on the axial support and connected with the high-pressure water supply assembly. According to the automatic flushing equipment for the livestock farm, the angle of the spray head and the height of the equipment can be flexibly adjusted, accurate flushing can be achieved, the flushing work efficiency and the flushing quality are improved, water is saved, and the automatic flushing equipment is particularly suitable for laminated poultry houses.

The utility model discloses an electric trolley, it includes frame, the outer surface fixedly connected with handle frame of frame, the outer surface fixedly connected with handle sleeve of handle frame, the outer surface of handle sleeve is provided with button switch, the rear surface fixedly connected with low speed waterproof motor of frame. Through setting button switch and low speed waterproof motor, can provide auxiliary power through low speed waterproof motor to make operating personnel only need to control low speed waterproof motor start -stop through button switch, and cooperate and set up driving wheel, belt, U -shaped seat, connecting shaft, synchronous wheel, first taper tooth, rotating shaft and second taper tooth etc. structure, can drive small size stirring vane and large size stirring vane to rotate in the moving process of trolley, thereby to the material in the first taper tooth inside is stirred, to break the material static state, ensure that material mixes fully, avoid the emergence of the condition that material is dilute under thick.

The utility model relates to the technical field of electric push rods, in particular to an overload protection structure for an electric push rod. The overload protection structure for the electric push rod comprises a lead screw and a transmission gear used for being in power connection with a gear reducer, the lead screw sequentially comprises a first threaded section, a fixed section and a second threaded section in the axial direction, the first threaded section, the fixed section and the second threaded section are used for driving the push rod to move along the axis of the push rod, and shaft sleeves are arranged on the outer surfaces of the fixed section and the second threaded section in a sleeved mode. The outer surface of the shaft sleeve is provided with a first retaining shoulder and a second retaining shoulder which are arranged at intervals in the axial direction, the transmission gear is arranged between the first retaining shoulder and the second retaining shoulder in a sleeved mode, and one axial end of the transmission gear is provided with an elastic piece used for abutting against the first retaining shoulder or the second retaining shoulder. The utility model has the advantage that the overall cost of the device is reduced on the premise that the transmission performance and the anti-overload performance of the device are ensured.

The utility model particularly relates to the technical field of electric push rods, and discloses a multi-stage electric push rod which comprises a first mounting seat, a second mounting seat is fixedly arranged on the side wall of the first mounting seat, a third mounting seat is fixedly arranged on the side wall of the second mounting seat, a piston rod is inserted into the third mounting seat, and the piston rod is connected with the second mounting seat. A first gear is rotationally connected to the side wall of the second mounting seat, a second gear is rotationally connected to the middle of the second mounting seat, a third gear is rotationally connected to the side wall, close to the second gear, of the second mounting seat, and a first notch is formed in the side wall, close to the second mounting seat, of the first mounting seat and used for mounting of the first gear, the second gear and the third gear. By arranging the first mounting seat, the first notch, the second notch, the transverse partition plate and the lubricating oil, the contact area between the transverse partition plate and the lubricating oil is increased, so that the heat absorption efficiency of the lubricating oil is improved, the rising speed of the internal temperature of the first notch is reduced when the lubricating oil absorbs heat, the internal temperature of the first notch is reduced, and the service life of the gear is prolonged.

The utility model discloses a felt pile edge pressing device which comprises a support (1) and a placing plate (2) placed in the support (1), felts are stacked on the placing plate (2), a pressing plate (3) located above the placing plate (2) is arranged in the support (1), air cylinders (4) are arranged between the pressing plate (3) and the support (1), the air cylinders (4) are arranged in pairs, the air cylinders (4) are arranged on the two sides of the placing plate (2) respectively, and the air cylinders (4) are arranged in pairs. The pressing plates (3) are arranged above the two sides of the containing plate (2), a fixing frame (5) is arranged in the support (1), a rail (6) is arranged on the fixing frame (5), and an electric trolley (7) connected with the air cylinder (4) is arranged on the rail (6). The air cylinder (4) pushes the pressing plate (3) to press downwards, the two sides of a felt pile are pressed downwards through the pressing plate (3), the two sides of the felt pile are compacted, and therefore follow-up processing and transporting of the felt pile are facilitated.

The invention relates to the technical field of stacking, in particular to fiber metal laminated plate carrying and stacking equipment which comprises a first rack, a conveyor, a mounting frame, an electric guide rail, a moving plate and the like, the conveyor is mounted on the first rack, the mounting frame is connected to the top of the first rack, and the electric guide rail is mounted in the mounting frame; a sliding block of the electric guide rail is connected with a movable plate. Fiber metal laminated plates can be placed on the electric tackle through the electric suction cup to be stacked, when the number of layers of the fiber metal laminated plates is close to that of the containing groove, stacking is suspended, then a cushion plate is pushed into the containing groove through a push plate, the cushion plate can disperse part of pressure, and stacking is completed. And the fiber metal laminated plate at the lower part of the limiting frame is prevented from bearing overlarge concentrated load, so that local deformation or bending of the fiber metal laminated plate at the lower part of the limiting frame can be avoided.

The utility model relates to a rod descending mechanism of an automatic lifting current collector of a trolley bus. The rod descending mechanism is mainly composed of a base, a rotating seat, a pitching arm, a large tension spring, a trolley rod and a current collecting head. One end of the pitching arm is hinged to the rotating seat, the trolley pole is fixed to the other end of the pitching arm, and the current collecting head is installed at the tail end of the trolley pole. The two ends of the large tension spring are hinged to the rotating base and the pitching arm respectively. The mechanism is further provided with a brake to control rotation of the rotating seat and an electric rope winder, and the electric rope winder is connected with the trolley pole through an internal pull rope, so that lifting control over the trolley pole is achieved. The control module is responsible for monitoring the electric connection state of the current collector and operating the brake and the electric rope winder according to the electric connection state so as to quickly respond to and process the rod descending requirement. According to the design, a traditional descending rod and an aligning air cylinder are abandoned, the overall height of equipment is reduced, the available space in a compartment is increased, the structure is simplified, the reaction speed is increased, and the running safety of the trolley bus is enhanced.

The application discloses a kind of garden greening pruning device, belong to garden machinery field.The device includes electric trolley body, pruning cutting unit and collection unit;Pruning cutting unit includes support, cutter head, rotating shaft, rotary seat, lifting support arm, rotary drive mechanism, switching drive mechanism and lifting drive mechanism, switching drive mechanism drives rotary seat to drive rotating shaft switch between vertical and horizontal, lifting drive mechanism drives lifting support arm to lift;Collection unit includes collection cover, hose, collection box, air pipe and negative pressure fan, collection cover can be set in trolley body bottom and be connected collection box by hose with floating up and down, collection box is connected negative pressure fan by air pipe.The application realizes cutter head one-key switching between mowing posture and side pruning posture by switching drive mechanism, adjusts height in combination with lifting drive mechanism, one machine multi-purpose;Meanwhile, through floating collection cover cooperation negative pressure fan, the real-time collection of debris is realized, and the garden maintenance efficiency and cleanliness are improved.

The utility model provides a kind of stroke detection device for electric push rod, for electric push rod's stroke detection device includes electric push rod body and bottom plate, electric push rod body is detachably connected on bottom plate upper end face, bottom plate upper end face is fixedly connected with scale board, scale board side wall is slidably connected with lifting plate, abutting plate is arranged below lifting plate, driving piece is inserted in scale board, driving abutting plate lifting, bottom plate upper end face is slidably connected with the limiting component one of electric push rod body to front and rear limit, lifting plate lower end face is fixedly connected with the limiting seat of electric push rod body to left and right limit, movable plate driven by double-end thread screw rod and bolt nut fixed limiting seat cooperate to limit electric push rod body, both avoid the friction damage of electric push rod and the side wall of detection cylinder, and eliminate the stroke measurement error caused by inclination, significantly improve the precision of detection.

The utility model relates to the technical field of tunnel inspection electric trolleys, and discloses a special electric trolley device for high-voltage cable tunnel inspection, which comprises a machine table, an adjusting assembly is arranged on the upper surface of the machine table, a battery assembly is arranged in the machine table, and the adjusting assembly comprises a fixed seat. The bottom of the fixing base is fixedly connected to the upper surface of the machine table, the upper surface of the fixing base is fixedly connected with a plurality of side frames, the side walls of the side frames are fixedly connected with electric motors, the output end of each electric motor is fixedly connected with a rotating frame, and the upper surface of the fixing base is fixedly connected with a fixing table. According to the utility model, the electric motor outputs the rotating stand to enable the rotating stand to rotate on the side wall of the side frame, the rotation of the rotating stand can push the sliding shaft to enable the sliding block to slide on the outer wall of the fixed table, and the angle of the detection table is further changed through the connection of the sliding shaft, so that the trolley can easily adapt to different inspection requirements; and the operation safety of the cable system is further ensured.

An automatic mixing device for blood collection tubes relates to the field of medical instruments and comprises a conveying guide rail, an electric trolley, a clamping mechanism and a control mechanism, the conveying guide rail comprises an overturning section formed by spiral extension and transfer sections connected to two ends of the overturning section, and a metal guide sheet extending along a track is arranged on the conveying guide rail; the bottom of the electric trolley is provided with a magnet which can be attracted with the metal guide sheet; the clamping mechanism is arranged on the electric trolley to clamp the blood collection tubes so that the blood collection tubes can turn over along with spiral conveying of the operation trolley; the control mechanism is arranged on the transfer section and located at the input end of the overturning section. Comprising a photoelectric head arranged on a transfer section, a photoelectric sensor which is arranged on a transfer trolley and can be opposite to the photoelectric head, a gravity sensor which is arranged on an electric trolley and can be in contact with a blood collection tube, and a controller which is arranged in the electric trolley and is respectively connected with the photoelectric sensor and the gravity sensor. When the blood collection tubes are driven by the electric trolley to pass through the overturning section of the conveying guide rail, overturning and uniform mixing of the blood collection tubes are automatically completed.

The utility model discloses a driving structure and an electric trolley, the driving structure is used for driving a driving wheel to rotate, the driving structure is arranged in the driving wheel, and the driving structure comprises a driving motor; the first wheel carrier and the second wheel carrier are arranged in a butt joint mode, and the driving motor is arranged between the first wheel carrier and the second wheel carrier in a clamped mode. The first wheel carrier and the second wheel carrier are arranged in a butt joint mode, the driving motor is clamped between the first wheel carrier and the second wheel carrier, stable supporting and fixing can be provided for the driving motor, it is guaranteed that the driving motor is kept at the correct position in the working process, displacement or shaking caused by vibration, impact and other factors is avoided, and therefore normal operation and transmission efficiency of the driving motor are guaranteed; and the stability and reliability of the whole driving system can be improved.

An electric hoist with a fall-prevention structure effectively solves the problem of the risk of electric hoist falling. It includes a track, an electric trolley, and a hoist body. The hoist body is equipped with protective devices located on the front and rear sides of the electric trolley. Each protective device includes a frame, which is fixedly connected to the hoist body. A rotating shaft is mounted on the frame, and a first screw and a second screw with opposite thread directions are coaxially fixed to the rotating shaft. The first screw is threadedly connected to a first nut, and a first frame is fixed to the upper end of the first nut. A first roller in contact with the track is rotatably connected to the lower end of a first positioning plate. Multiple third screws are fixed to the lower end of the first frame, inserting vertically into the interior of the first frame. A second screw is threadedly connected to a second nut, and a second frame is fixed to the upper end of the second nut. A second roller in contact with the track is rotatably connected to the lower end of a second positioning plate. Multiple fourth screws are fixed to the lower end of the second frame, inserting vertically into the interior of the second frame.

The present invention relates to the technical field of switch cabinets, and discloses an electric trolley for switch cabinets, comprising a frame, wherein a first mounting plate is fixedly connected to the top of the frame, a first slide is provided on one side of the first mounting plate, a first slider is slidably connected in the first slide, a mounting frame is fixedly connected to one side of the first slider, a first threaded rod is rotatably inserted into the top of the first mounting plate, the first threaded rod is threadedly inserted into the first slider, a plurality of insulators are fixedly connected to one side of the mounting frame, an insulating cover is fixedly connected to the other end of the insulator, a guide post is inserted into the insulator, the guide post passes through the insulating cover, a contact arm is fixedly connected to the other end of the insulating cover, the contact arm is electrically connected to the guide post, and a plum blossom contact is fixedly connected to the other end of the contact arm. The present invention can adjust the height of the plum blossom contact, thereby facilitating connection with busbar contacts of different heights, thereby accurately completing docking with the busbar contact.

The utility model discloses a hog house cleaning vehicle, which belongs to the technical field of hog house cleaning and comprises an electric cart and a water tank arranged above the electric cart. The cleaning device is characterized in that a telescopic air cylinder is vertically arranged on the electric cart, a mounting block is fixedly connected to the movable rod end of the telescopic air cylinder, a cross rod is arranged at the top end of the mounting block, and swing cleaning assemblies are arranged at the two ends of the cross rod; the high-pressure water gun is controlled to swing in a reciprocating mode through the swing cleaning assemblies located at the two ends of the cross rod, all-directional dead-corner-free cleaning can be conducted on the hog house, meanwhile, the telescopic air cylinder can control the height of the high-pressure water gun in a lifting mode, the cleaning vehicle only needs to linearly move on a passageway, excessive operation of workers is not needed, and the cleaning efficiency is improved. And the cleaning efficiency is greatly improved due to simultaneous operation on two sides.

The invention belongs to the technical field of trolley fixing devices, and particularly discloses a fixing device special for an electric trolley in a construction elevator and a using method of the fixing device. The fixing device comprises a supporting bottom plate, a lifting plate, an electric push rod, a first electromagnetic plate, a supporting back plate and a camera; the supporting bottom plate is arranged on the ground of a construction elevator, and a lifting plate is arranged in the middle of the upper end of the supporting bottom plate and movably connected with the supporting bottom plate through a lifting assembly so that the lifting plate can move in the vertical direction. The first electromagnetic plate is embedded in the surface of the upper end of the lifting plate and is electrically connected with a power supply in the supporting bottom plate; a plurality of electric push rods are arranged at the lower end of one side, far away from the vertical surface, of the supporting back plate; a push rod of the electric push rod is fixedly connected with one side of the supporting bottom plate and used for adjusting the position of the supporting bottom plate relative to the supporting back plate. The camera is arranged at the upper end of one side of the supporting back plate through the top supporting plate, arranged above the lifting plate and used for monitoring the electric trolley in real time, and it is ensured that the position of the electric trolley is not changed.

The application discloses a kind of emergency brake control method and system of trackless trolleybus, method includes: if receiving brake signal, detect current speed v and target distance relative to target position;If the target distance is less than the first threshold value of pre-set and current speed v is greater than the second threshold value of pre-set, function relationship of brake distance s and brake force distribution coefficient is constructed as target function according to target strategy, also obtain the instability working condition information of each carriage, configure the local constraint of the target function according to the instability working condition information;Optimal value is solved to the target function configured with local constraint, and the brake force distribution coefficient of each carriage is obtained, and the corresponding carriage is braked according to the brake force distribution coefficient, until the vehicle stops running.The application guarantees that trackless trolleybus is safely and stably braked, and the shortest brake distance is reached.

According to the control system, the control rod acts on the speed regulation structure on the side away from the brake structure for speed regulation and acts on the brake structure on the side away from the speed regulation structure for braking, then advancing and braking operation is completed, operation is easy, operation is fast, and wiring in the control rod is not needed; the wire harness is directly installed on the inner side of the box body and is not easy to wear, and the problem of wire harness wear is effectively solved. Meanwhile, the control rod is directly connected with the steering piece through the connecting rod piece, the steering piece is directly installed at the bottom corner position (the position with the maximum structural strength) of the box body structure, the control rod is used for controlling the steering piece to conduct direction control, meanwhile, the control rod is energized, and the actions of advancing and rear braking can be completed; and the control rod is released or restrained by the restraining piece through position adjustment of the switching piece, so that the device can be used in both riding and traction operation modes. Due to the fact that only one control rod is adopted, the problem that space is limited due to the fact that multiple control rods are adopted in the prior art can be effectively solved.

The invention relates to the technical field of trolleys, in particular to a trolley driving device and an electric trolley, the trolley driving device comprises a power output shaft, a driving clutch wheel, a power output gear, a driven clutch wheel, a rotary power mechanism and a limiting elastic piece, the rotary power mechanism comprises a gear seat, a motor, a first-stage sun gear, a first-stage planet carrier, at least three first-stage planet gears, a second-stage sun gear, a second-stage planet carrier, at least three second-stage planet gears, a planet output gear, a speed reduction input gear and a speed reduction output gear, and an inner gear ring is formed in the gear seat; the trolley driving device is compact in overall structure and has large torque, the situation that reverse driving force and damage are caused to the driving device due to manual pushing can be avoided, and the trolley can be driven to move in an electric driving mode; and the trolley can be well pushed in a manual pushing mode, and can be better applied to the trolley.

The utility model discloses an intelligent mobile pulsed ultraviolet disinfection robot, which belongs to the technical field of disinfection equipment, and adopts the technical scheme that the intelligent mobile pulsed ultraviolet disinfection robot comprises an electric trolley, the top of the electric trolley is fixedly connected with a disinfection assembly, the top of the disinfection assembly is fixedly connected with an adjusting assembly, and the disinfection assembly comprises a circular base; a storage circular plate is fixedly connected to the top of the circular base, and mounting boxes are movably connected to the four corners of the top of the circular base, so that the problems that an existing pulsed ultraviolet disinfection robot is poor in disinfection effect, and in the actual use process, due to lack of an effective adjusting structure, the irradiation direction cannot be flexibly adjusted according to an actual disinfection scene, and the disinfection effect is poor are solved. The problems that in the prior art, the environment is difficult to disinfect quickly due to ultraviolet irradiation, and meanwhile, a large number of disinfection blind areas exist in a complex space, so that the ultraviolet irradiation dose of partial areas is insufficient, repeated operation or manual compensation is needed, the disinfection efficiency of the environment is seriously influenced, and the practicability of the device is reduced are solved.

The utility model discloses an auxiliary device for copper foil production, including electric trolley, a plurality of guide wheels have on electric trolley, the base of electric trolley and lifting drive part are solid -connected, the working rod of lifting drive part and workstation are solid -connected, the workstation is fixed with two locating tables for locating material roll, and two locating tables form splay structure, the electric trolley is fixed with connecting seat, the connecting seat and movable arm lower extreme are rotated through the pin shaft and are connected, movable arm upper portion and guide block are solid -connected, the guide block is screw -threaded and is connected with locking screw, the guide block is slidably connected with main rod, the main rod is fixed with auxiliary rod, and auxiliary rod and main rod are perpendicular to each other, the main rod and auxiliary rod all are fixed with laser indicating lamp.

The utility model discloses a ground marking device for resource planning, and belongs to the technical field of ground marking devices. Comprising an electric trolley and a rotating disc, the rotating disc is arranged outside the electric trolley, a supporting plate is installed at the top end of the rotating disc, a stirring barrel is installed at the top end of the supporting plate, a Y-axis moving support is installed at the top end of the supporting plate on one side of the stirring barrel, and a Z-axis moving support is arranged outside the Y-axis moving support; and a control panel is mounted at the top end of the electric trolley. According to the utility model, the ground marking device can conveniently move and adjust the position for marking at multiple positions, conveniently rotate the angle for marking, enlarge the marking range of the ground marking device, conveniently mark on a slope surface, improve the marking convenience of the rotation angle of the ground marking device, and improve the working efficiency of the ground marking device. And the raw material mixing uniformity of the ground marking device is improved.

The electric push rod comprises a shell, a driving mechanism, an outer pipe, a push rod assembly and a first limiting switch, the outer pipe is fixedly connected to the outer side of the shell, a guide groove is formed in the inner side wall of the outer pipe in the length direction, and the push rod assembly is arranged in the outer pipe and is in sliding fit with the inner side of the outer pipe; the input end of the push rod assembly extends into and is fixed into the driving mechanism, the first limiting switch is electrically connected with the driving mechanism and is fixed to the push rod assembly, and the top of the first limiting switch is clamped into the guide groove. The first limiting switch moves leftwards in the sliding groove along with the push rod mechanism until the triggering end of the first limiting switch extrudes the inner wall of the left side of the outer pipe and triggers the first limiting switch, the first limiting switch controls the driving mechanism to be closed, the pushing assembly is prevented from excessively retracting in the outer pipe, the outer pipe is protected, and the service life of the electric push rod is prolonged.

This invention discloses an upward-pushing hydraulic slag pusher, belonging to the field of slag handling. The upward-pushing hydraulic slag pusher includes an electric trolley and a slag storage box fixedly connected to the upper end of the electric trolley. An outer pipe communicating with the slag storage box is fixedly connected to the upper end of the slag storage box, and a lifting pipe is inserted into the inner wall of the upper end of the outer pipe. A hydraulic cylinder is fixedly installed at the upper end of the slag storage box, wherein a lifting plate is fixedly connected to the telescopic end of the hydraulic cylinder, and the lifting plate is fixedly connected to the outer wall of the lifting pipe. Two symmetrically arranged device slots are provided, and fan-shaped buffer plates are installed in the two device slots through a buffer mechanism. Suction hoods are installed on both sides of the inner top of the slag storage box. This invention can effectively reduce dust and odor generated by slag, and also reduce the noise generated when slag falls, thereby reducing the harm of dust and odor to workers.

The utility model discloses a kind of wheel body structures for electric suitcase, it is related to cycling technical field, including: electric suitcase, and with the wheel body structure of electric suitcase bottom assembly, the wheel body structure has two kinds of switching mode of orientation, universal;The wheel body structure includes fixed seat, the side wall, top of the fixed seat is equipped with release limiting pull rod, limiting clamping component respectively, the limiting clamping component is vertically assembled with release limiting pull rod;And wheel body structure is assembled on fixed seat.The wheel body structure of the utility model is a kind of switching mechanism of two kinds of states of universal rotation orientation, can be freely switched according to use scene, not only retains the existing advantage of existing electric suitcase, and it is convenient to drag or flat push, and it is rich to experience of electric suitcase category product.

This useful solution relates to the field of mechanical engineering, specifically a locking and folding mechanism for push handles used in industrial trolleys, electric trolleys, and other material handling equipment. The mechanism includes a push handle connected to the frame via a swivel joint, a locking support fixed to the frame, a locking lever mounted on the support, and a locking element connected to a locking receiver located on the push handle. When the push handle is brought to the working position, the locking lever is rotated to the locked position to create a mechanical connection that holds the push handle securely to the frame. To fold the push handle, the user simply rotates the locking lever to the open position to release the locking connection and allow the push handle to return to the folded position. The solution has the advantages of a simple structure, quick one-handed opening and closing operation, reduced number of parts, increased durability, reduced vibration during use, and suitability for mass production using common mechanical processing technologies such as laser cutting, stamping, and structural welding.This solution is particularly suitable for industrial trolleys with medium to heavy loads, requiring high reliability and maneuverability.