Tool cart with lifting function

Abstract

The application relates to the technical field of repair tools, in particular to a tool cart with a lifting function; the application provides a tool cart with a lifting function, which comprises a frame, the top of the frame is arranged with a table plate, the bottom of the frame is arranged with a front wheel assembly and a rear wheel assembly at the front end and the rear end respectively, the front end of the frame is arranged with a head assembly used for driving the steering operation of the front wheel assembly at the middle line position, one side of the head assembly is arranged with a seat assembly capable of rotating around the seat assembly to change the position of a driving or operating space, the bottom of the frame is arranged with a brake assembly used for guaranteeing the safety of driving, and the bottom of the frame is arranged with a screw rod elevator at the gravity center midpoint position and used for realizing the lifting operation of the whole tool cart; the application can replace a scissor type elevator with the screw rod elevator, so that the lifting structure of the tool cart is simplified, and the overall weight of the tool cart is reduced.

Description

Technical Field

[0001] This application relates to the field of maintenance tools technology, and in particular to a tool cart with a lifting function. Background Technology

[0002] In the field of vehicle repair, tool carts are indispensable auxiliary equipment. In order to lift and position heavy components such as engines during the repair process, most existing tool carts use scissor lifts to achieve the lifting function. However, scissor lifts have many shortcomings: their structure is complex, requiring the configuration of hydraulic cylinders and foldable scissor arms, which not only increases the overall weight of the tool cart, but also makes its failure rate relatively high; at the same time, due to the complex structure, the power consumption is also increased accordingly, which brings inconvenience to actual use. Utility Model Content

[0003] The problem this application aims to solve is that existing tool carts using scissor lifts for engine lifting require the configuration of hydraulic cylinders and foldable scissor arms, which not only increases the overall weight of the tool cart but also results in a relatively high failure rate.

[0004] To solve the above-mentioned technical problems, this application provides a tool cart with lifting function, including a frame, a platform arranged on the top of the frame, a front wheel assembly and a rear wheel assembly arranged at the front and rear ends of the bottom of the frame respectively to realize the walking function of the tool cart, a front end assembly for driving the steering operation of the front wheel assembly arranged at the center of the front end of the frame, a seat assembly that can rotate around the front end assembly to change the driving or operating space position, a brake assembly for ensuring driving safety arranged at the bottom of the frame, and a screw jack for realizing the overall lifting operation of the tool cart arranged at the center of gravity of the bottom of the frame.

[0005] Furthermore, the front wheel assembly includes a cross brace, a steering column, a connecting plate, a steering knuckle, a front wheel, and a tie rod. The cross brace is located at the lower front end of the frame. The middle part of the cross brace is connected to the frame by a hinge. The two ends of the cross brace are symmetrically arranged with steering knuckles that are hinged to it. The outer side of the steering knuckle is connected to the front wheel through a bearing. The steering column is vertically arranged at one end of the centerline along the length of the frame and is connected to the frame through a bearing. The lower end of the steering column is provided with a connecting plate that is fixedly connected to it.

[0006] Furthermore, the linkage is divided into a driving linkage and a driven linkage. The end of the connecting plate is provided with a driving linkage that connects to one of the steering knuckles, and a driven linkage is provided between the two steering knuckles to realize the linkage operation.

[0007] Furthermore, the rear wheel assembly includes a drive axle, a motor, rear wheels, U-bolts, and a battery. The drive axle is transversely mounted at the lower rear end of the frame, and both ends of the drive axle are connected to the frame via U-bolts. The motor is located on one side of the drive axle and connected to it. The rear wheels are symmetrically arranged on both ends of the drive axle and connected to it. The battery is located on one side of the drive axle and is electrically connected to the motor.

[0008] Furthermore, the front assembly includes a handlebar and lights. The handlebar is horizontally positioned on top of the steering column and fixedly connected thereto, while the lights are arranged in the center of the upper part of the handlebar and connected to it.

[0009] Furthermore, the seat assembly includes a sleeve, a strut, and a seat body. The sleeve is fitted onto the outside of the steering column and is fixedly connected to the frame. The strut is arranged outside the sleeve and can be raised, lowered, and rotated along the surface of the sleeve. The strut and the sleeve are connected by bolts. The seat body is arranged at one end of the strut and is used by the driver to sit.

[0010] Furthermore, the brake assembly includes a pedal, a support tube, a connecting plate, a cable, and a spring. There are two pedals, which are arranged separately and spaced apart on the upper part of the platform. The support tube is arranged inside the frame and connected to it by a bearing. Connecting plates are arranged alternately on the upper part of the support tube and are fixedly connected to it. The connecting plates are connected to the pedal and the drive axle respectively by a cable. A spring connected to one of the connecting plates is arranged on the lower part of the frame.

[0011] Furthermore, guardrails are symmetrically arranged on both sides of the frame to provide shielding and protection.

[0012] Because the tool cart of this application is designed with a front wheel assembly, a rear wheel assembly, a cab assembly, a seat assembly, a brake assembly, and a screw jack, it can achieve multifunctionality and high efficiency in steering, driving, operation, lighting, and braking through the coordinated work of the front wheel assembly, rear wheel assembly, cab assembly, brake assembly, and screw jack. Furthermore, it can replace the scissor lift with a screw jack, thereby simplifying the lifting structure of the tool cart, reducing its overall weight, and solving the problem that existing tool carts using scissor lifts for engine lifting operations require hydraulic cylinders and foldable scissor arms, which not only increases the overall weight of the tool cart but also results in a relatively high failure rate. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of an embodiment.

[0014] Figure 2 This is a front view structural diagram of an embodiment.

[0015] Figure 3 This is a side view of the structure of an embodiment.

[0016] Figure 4 This is a top view of the structure of an embodiment.

[0017] Figure 5 This is a schematic diagram of the front wheel assembly.

[0018] Figure 6 This is a schematic diagram of the rear wheel assembly.

[0019] Figure 7 This is a schematic diagram of the front assembly.

[0020] Figure 8 This is a structural schematic diagram of the seat assembly.

[0021] Figure 9 This is a schematic diagram of the brake assembly.

[0022] In the diagram: 1. Frame; 2. Front wheel assembly; 3. Rear wheel assembly; 4. Guardrail; 5. Front end assembly; 6. Seat assembly; 7. Brake assembly; 8. Screw jack; 9. Cross brace; 10. Steering column; 11. Connecting plate; 12. Steering knuckle; 13. Front wheel; 14. Driving rod; 15. Driven rod; 16. Drive axle; 17. Motor; 18. Rear wheel; 19. U-bolt; 20. Battery; 21. Handlebar; 22. Light fixture; 23. Sleeve; 24. Support rod; 25. Seat; 26. Pedal; 27. Support tube; 28. Connecting plate; 29. ​​Cable; 30. Spring. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] This application relates to a utility vehicle with a lifting function, such as... Figure 1-9As shown, the tool cart includes a frame 1, a front wheel assembly 2, a rear wheel assembly 3, guardrails 4, a front end assembly 5, a seat assembly 6, a brake assembly 7, and a screw jack 8. The frame 1 provides basic support, and a platform is arranged on top of the frame 1 for placing and supporting parts to be repaired. The front wheel assembly 2 and the rear wheel assembly 3 are respectively located at the front and rear ends of the bottom of the frame 1, enabling the tool cart to move. The guardrails 4 are symmetrically arranged on both sides of the frame 1, providing protection and preventing parts to be repaired from slipping during lifting. The front end assembly 5 is located at the center front of the frame 1 and is used to drive the front wheel assembly 2 for steering. The seat assembly 6 is located on one side of the front end assembly 5 and can rotate around it to change the driving or operating position. The brake assembly 7 is located at the bottom of the frame 1 to ensure driving safety. The screw jack... Located at the bottom center of gravity of the frame 1, screw jack 8 is the core component of this application, used to realize the overall lifting operation of the tool cart. Screw jack 8 is driven by motor 17 to rotate the screw, thereby moving the platform up and down to achieve the lifting function. Replacing scissor lift with screw jack 8 greatly simplifies the structure of the tool cart, making it easier to manufacture and maintain. Due to the removal of complex components such as hydraulic cylinders and foldable scissor arms, the overall weight of the tool cart is significantly reduced. The screw jack 8 has a relatively simple structure and fewer parts, resulting in a relatively low failure rate and improved reliability of the tool cart. The drive motor 17 of screw jack 8 has relatively low power, resulting in lower power consumption and greater energy efficiency. The lifting operation of screw jack 8 is more stable and precise, making the tool cart more convenient and efficient to use.

[0025] The front wheel assembly 2 specifically includes a cross brace 9, a steering column 10, a connecting plate 11, a steering knuckle 12, a front wheel 13, and a tie rod. The cross brace 9 is located at the lower front end of the frame, serving as the basic support structure for the front wheel assembly 2. The middle of the cross brace 9 is hinged to the frame, allowing the cross brace 9 to rotate within a certain range relative to the frame. Steering knuckles 12 are symmetrically arranged at both ends of the cross brace 9, hinged to it. This design allows the two front wheels 13 to steer independently or synchronously. The outer side of the steering knuckle 12 is connected to the front wheel 13 via bearings. The bearings ensure the smoothness and stability of the front wheel 13 during rotation. The hinges between the steering knuckle 12 and the cross brace 9, and the bearing connection to the front wheel 13, together constitute the steering mechanism of the front wheel assembly 2. The steering column 10 is vertically arranged at one end of the frame along its length centerline and is connected to the frame via bearings. This design allows… The steering column 10 can rotate relative to the frame. The lower end of the steering column 10 is provided with a connecting plate 11 fixedly connected to it. The connecting plate 11, as an intermediate component for transmitting steering force, converts the rotational motion of the steering column 10 into the pulling or pushing motion of the tie rod. The tie rod is divided into a driving rod 14 and a driven rod 15, which together constitute the steering transmission mechanism of the front wheel assembly 2. The end of the connecting plate 11 is provided with a driving rod 14 connected to one of the steering knuckles 12. When the steering column 10 rotates, the connecting plate 11 drives the driving rod 14 to move, thereby pushing or pulling the corresponding steering knuckle 12 to rotate. A driven rod 15 is arranged between the two steering knuckles 12 to realize the linkage operation. The design of the driven rod 15 enables the two steering knuckles 12 to maintain synchronous rotation, thereby ensuring the consistency of the two front wheels 13 when steering. In order to improve the stability of the cross brace 9, shock absorbers are arranged in both the vertical and horizontal directions of the cross brace 9.

[0026] When the front wheels 13 need to be steered, the operator drives the steering column 10 to rotate. The rotation of the steering column 10 is transmitted to the drive rod 14 through the connecting plate 11. The drive rod 14 then pushes or pulls the steering knuckle 12 connected to it to rotate. Due to the presence of the driven rod 15, the other steering knuckle 12 will also rotate synchronously, thereby achieving synchronous steering of the two front wheels 13. This design not only simplifies the structure of the steering mechanism, but also improves the flexibility and reliability of steering. The front wheel assembly 2 has a simple and compact structure, is easy to manufacture and maintain, and is flexible and reliable in steering. It can achieve synchronous steering of the two front wheels 13. The bearing and hinge design ensures the smoothness and stability of the front wheels 13 during rotation. Steering operation can be achieved by driving the steering column 10 to rotate, making the operation convenient and efficient.

[0027] The rear wheel assembly 3 mainly includes a drive axle 16, a motor 17, rear wheels 18, U-bolts 19, and a battery 20. The drive axle 16 is transversely mounted at the lower rear end of the frame, serving as the core support and transmission component of the rear wheel assembly 3. Both ends of the drive axle 16 are connected to the frame via U-bolts 19. This connection method ensures the stability of the drive axle 16 while facilitating disassembly and maintenance. The design of the drive axle 16 allows it to withstand large torques and loads, ensuring the stability and reliability of the tool vehicle during operation. The motor 17 is located on one side of the drive axle 16 and connected to it, serving as the power source for the rear wheel assembly 3. The motor 17 converts electrical energy into mechanical energy through internal electromagnetic action, driving the drive axle 16 to rotate, which in turn drives the rear wheels 18. The selection of the motor 17 takes into account factors such as power, efficiency, and durability to ensure that the tool vehicle maintains good performance under different working conditions. For optimal performance, the rear wheels 18 are symmetrically arranged at both ends of the drive axle 16 and connected to it. The design of the rear wheels 18 takes into account factors such as grip, wear resistance, and rolling resistance to ensure the stability and passability of the tool vehicle during operation. The material and structure of the rear wheels 18 have also been carefully selected to adapt to the needs of different road surfaces and working conditions. U-bolts 19 are used to fix the drive axle 16 to the frame, ensuring a stable and reliable connection between the drive axle 16 and the frame. The design of the U-bolts 19 makes them easy to install and remove, facilitating the maintenance and replacement of the rear wheel assembly 3. The battery 20 is located on one side of the drive axle 16 and is electrically connected to the motor 17. The battery 20 serves as the power source for the tool vehicle, providing the necessary electrical energy to the motor 17. The selection of the battery 20 takes into account factors such as capacity, voltage, and charging speed to ensure that the tool vehicle can work stably for a long time.

[0028] When the tool cart needs to be driven, the battery 20 provides power to the motor 17, which starts to rotate under the action of the power. The rotational motion of the motor 17 is transmitted to the rear wheels 18 through the drive axle 16. The drive axle 16, as a transmission component, converts the rotational motion of the motor 17 into the rotational motion of the rear wheels 18. Since the rear wheels 18 are symmetrically arranged at both ends of the drive axle 16, the two rear wheels 18 can rotate synchronously, thereby realizing the movement of the tool cart. The rear wheel assembly 3 has a compact structure, reasonable layout, and is easy to manufacture and maintain. The motor 17 drive method is efficient and environmentally friendly, reducing energy consumption and emissions. The drive axle 16 is designed to be stable and reliable, and can withstand large torque and load. The rear wheels 18 have strong grip and good wear resistance, adapting to the needs of different road surfaces and working conditions. The battery 20 has a large capacity and fast charging speed, ensuring the long-term working capability of the tool cart.

[0029] The front assembly 5 includes a handlebar 21 and a light fixture 22. The handlebar 21 is horizontally positioned on top of the steering column 10 and fixedly connected to it. This design allows the operator to directly rotate the steering column 10 by turning the handlebar 21, thereby achieving front wheel steering. The material and shape of the handlebar 21 have been carefully selected to ensure that the operator can comfortably grip and easily turn it during use. The fixed connection between the handlebar 21 and the steering column 10 adopts a reliable connection method to ensure that the handlebar 21 will not loosen or fall off during rotation, thus ensuring the stability of handling. For safety and other purposes, the lamp 22 is positioned centrally on the upper part of the handle 21 and connected to it. The design of the lamp 22 takes into account factors such as lighting effect and energy consumption to ensure that the operator can clearly see the road conditions ahead at night or in low-light environments. The selection and installation position of the lamp 22 have been carefully considered to ensure that its lighting range is wide enough and the light distribution is uniform, without causing glare or visual obstruction to the operator. The power supply for the lamp 22 comes from the battery 20 of the tool vehicle and is connected to the battery 20 through wires to ensure that the lamp 22 can be turned on at any time when needed.

[0030] When the operator needs to control the direction of the tool cart, they only need to hold the handle 21 and turn it. The rotation of the handle 21 will drive the steering column 10 to rotate, thereby realizing the steering of the front wheels through the transmission mechanism of the front wheel assembly 2. At the same time, when it is night or in low light, the operator can turn on the lights 22 to provide illumination for the road ahead and ensure driving safety. The handle 21 of the front assembly 5 is reasonably designed and easy to operate, and can easily realize the steering of the front wheels. The lights 22 have good lighting effect and low energy consumption, providing safety for driving at night or in low light conditions. The front assembly 5 has a compact structure, reasonable layout, and is easy to manufacture and maintain. The fixed connection between the handle 21 and the steering column 10 is reliable, ensuring the stability and safety of operation.

[0031] The seat assembly 6 includes a sleeve 23, a support rod 24, and a seat body 25. The sleeve 23 is fitted onto the outside of the steering column 10 and is fixedly connected to the frame 1. This design ensures the stability of the sleeve 23 while allowing it to be positioned and adjusted around the steering column 10. The material and wall thickness of the sleeve 23 have been carefully selected to ensure it can support the weight of the seat body 25 and the driver, while maintaining sufficient rigidity and durability. The support rod 24 is located outside the sleeve 23 and can be raised, lowered, and rotated along the surface of the sleeve 23. The design of the support rod 24 allows the driver to adjust the height of the seat body 25 according to their needs. The connection between the strut 24 and the sleeve 23 is made of bolts to ensure that the strut 24 can be firmly held in the required position after adjustment, and will not loosen or shift due to vibration during vehicle operation. The seat 25 is located at one end of the strut 24 for the driver to sit on. The design of the seat 25 takes into account ergonomic principles to ensure that the driver can maintain a comfortable sitting posture during long-term driving. The material and hardness of the seat 25 have also been carefully considered to adapt to the body shape and preferences of different drivers. The surface of the seat 25 can also be provided with a non-slip and wear-resistant covering layer to improve safety and comfort during driving.

[0032] The driver can adjust the position of the seat 25 according to their height, build, and operating habits by adjusting the position of the support rod 24 on the upper part of the sleeve 23. Specifically, the driver can raise or lower the support rod 24 along the sleeve 23 to adjust the height of the seat 25; at the same time, the driver can also change the angle of the seat 25 by rotating the support rod 24 to obtain a more comfortable driving posture. The seat assembly 6 has a reasonable and compact structure, is easy to manufacture and maintain. The support rod 24 can be raised, lowered, and rotated along the sleeve 23, making the spatial position of the seat 25 adjustable to adapt to the body size and operating habits of different drivers. The locking mechanism is reliable, ensuring that the support rod 24 can be stably held in the required position after adjustment. The seat 25 is designed in accordance with ergonomic principles, improving comfort and safety during driving.

[0033] The brake assembly 7 includes a pedal 26, a support tube 27, a connecting plate 28, a cable 29, and a spring 30. There are two pedals 26, arranged separately and spaced apart on the upper part of the platform for left and right foot operation. This design allows the operator to choose to use either the left or right foot for braking, improving operational flexibility and convenience. The material and shape of the pedals 26 were carefully selected to ensure they can withstand the operator's pressure while maintaining sufficient comfort and durability. The support tube 27 is located inside the frame and connected via bearings. This design allows the support tube 27 to rotate freely inside the frame, providing the necessary mechanical transmission foundation for braking operation. The material and wall thickness of the support tube 27 have also been strictly selected to ensure that it can withstand the tension and torque during braking and maintain sufficient rigidity and stability. The upper part of the support tube 27 has staggered connecting plates 28 that are fixedly connected to it. The design of the connecting plates 28 allows the braking force to be evenly transmitted to the support tube 27, and then transmitted to the brake drum structure on the drive axle 16 through the cable 29. The material and shape of the connecting plates 28 are selected with consideration for their transmission efficiency and durability. To ensure the accuracy and reliability of braking operation, the connecting plate 28 is connected to the pedal 26 and the drive axle 16 respectively via a cable 29. The cable 29, as the medium for transmitting braking force, is crucial in terms of its material and specifications. The cable 29 possesses sufficient strength and flexibility to ensure that the braking force is not lost or deformed during transmission, guaranteeing the sensitivity and accuracy of braking operation. A spring 30 is arranged on the lower part of the frame 1, connected to one of the connecting plates 28. The design of the spring 30 allows the support tube 27 to utilize the spring's elasticity when the driver releases the pedal 26. The spring 30 is carefully calculated to ensure that the return operation of the support tube 27 is both quick and accurate, preparing for the next braking operation. To increase the safety of the vehicle when it is stopped, the invention also adds a handbrake connected to one of the connecting pieces 28 by a pull cable 29. The handbrake is designed so that when the vehicle is stopped, the driver can lock the brake drum structure by pulling the handbrake lever, realizing the normal positioning and anti-rollover operation of the vehicle. The pull cable 29 and the locking mechanism of the handbrake have been rigorously tested and verified to ensure their reliability and durability.

[0034] When the driver needs to brake, they simply need to press the corresponding pedal 26. The pressing of pedal 26 will cause the connecting piece 28 to move via cable 29, which in turn causes the support tube 27 to rotate around the frame. The rotation of the support tube 27 will cause the brake drum structure on the upper part of the drive axle 16 to lock the wheels via another cable 29. When the driver releases pedal 26, the elastic force of spring 30 will cause the support tube 27 to return to its original position, preparing for the next braking operation. At the same time, when the vehicle is stopped, the driver can lock the brake drum structure by pulling the handbrake lever, realizing the normal positioning of the vehicle to prevent it from rolling away. The brake assembly 7 has a reasonable and compact structure, is easy to manufacture and maintain, and has multiple pedals 26, which are flexible and convenient to operate and adapt to the operating habits of different drivers. The support tube 27, connecting piece 28, cable 29 and other components are closely matched, with high transmission efficiency and accurate and reliable braking operation. The design of spring 30 allows the support tube 27 to quickly return to its original position, preparing for the next braking operation. The addition of the handbrake improves the safety of the vehicle when it is stopped and prevents the occurrence of rolling accidents.

[0035] In use, the front wheel assembly 2 is responsible for steering the tool cart. The driver rotates the handle 21 in the front assembly 5, causing the steering column 10 to rotate, which in turn steers the front wheels through the transmission mechanism of the front wheel assembly 2. The design of the front wheel assembly 2 ensures steering flexibility and accuracy, allowing the tool cart to turn flexibly in narrow spaces. The rear wheel assembly 3 is the drive unit of the tool cart, responsible for providing forward power. The driver operates the front assembly 5 (i.e., the controller throttle at the handle, which is connected to the motor 17 via a controller; the controller can be located next to the motor 17) to steer the tires in the rear wheel assembly 3. The rear wheel assembly 3 rotates, propelling the tool cart forward or backward. Its design considers load-bearing capacity and wear resistance, ensuring stable operation under various road conditions. The front assembly 5 integrates components such as the handle 21 and lights 22, serving as the main interface for the driver. The driver controls the cart's direction by gripping the handle 21 and illuminates the road ahead using the lights 22 on the front assembly 5. The front assembly 5 is ergonomically designed for driver comfort during extended operation. The brake assembly 7 handles the braking of the tool cart; the driver brakes by pressing a pedal. Pulling the handbrake lever or the plate 26 activates the connecting piece 28 via the cable 29, causing the support tube 27 to rotate around the frame. This, in turn, engages the brake drum structure on the upper part of the drive axle 16 to lock the wheels. The brake assembly 7 is designed to ensure rapid and reliable braking, guaranteeing the safety of the tool cart during operation. The screw jack 8 is responsible for lifting the tool cart. The operator rotates the screw in the screw jack 8 via a control mechanism (such as a handle or button), which in turn raises and lowers the lifting platform via a nut and other transmission components. The screw jack 8 is designed with load capacity and lifting speed in mind, ensuring efficient operation of the tool cart. The tool cart can easily lift and lower heavy objects. The front wheel assembly 2 is responsible for steering, and the rear wheel assembly 3 is responsible for driving. The two work together to enable the tool cart to drive and turn flexibly in various road conditions. The handle 21 in the front assembly 5 is responsible for operation, and the light 22 is responsible for illumination. The two work together to enable the driver to drive the tool cart safely in clear road conditions. The brake assembly 7 is responsible for braking to ensure that the tool cart can stop quickly and accurately during operation, improving the safety of the tool cart. The screw jack 8 is responsible for the lifting function, enabling the tool cart to easily lift and lower heavy objects, expanding the scope of use and functionality of the tool cart.

[0036] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0037] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0038] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A tool cart with lifting function, comprising a frame (1), characterized in that: A platform is arranged on the top of the frame (1). The front wheel assembly (2) and the rear wheel assembly (3) for the tool cart are arranged at the front and rear ends of the bottom of the frame (1), respectively. A front end assembly (5) for driving the front wheel assembly (2) to turn is arranged at the center line of the front end of the frame (1). A seat assembly (6) that can rotate around the front end assembly (5) to change the driving or operating space position is arranged on one side of the front end assembly (5). A brake assembly (7) for ensuring driving safety is arranged at the bottom of the frame (1). A screw jack (8) for realizing the overall lifting operation of the tool cart is arranged at the center point of the bottom of the frame (1).

2. The tool cart with lifting function according to claim 1, characterized in that: The front wheel assembly (2) includes a cross brace (9), a steering column (10), a connecting plate (11), a steering knuckle (12), a front wheel (13), and a tie rod. The cross brace (9) is located at the lower front end of the frame. The middle part of the cross brace (9) is connected to the frame by a hinge. The two ends of the cross brace (9) are symmetrically arranged with a steering knuckle (12) that is hinged to it. The outer side of the steering knuckle (12) is connected to the front wheel (13) by a bearing. The steering column (10) is vertically arranged at one end of the center line of the frame in the length direction and is connected to the frame by a bearing. The lower end of the steering column (10) is provided with a connecting plate (11) that is fixedly connected to it.

3. The tool cart with lifting function according to claim 2, characterized in that: The linkage is divided into a driving linkage (14) and a driven linkage (15). The end of the connecting plate (11) is provided with a driving linkage (14) connected to one of the steering knuckles (12), and a driven linkage (15) is provided between the two steering knuckles (12) to realize the linkage operation.

4. The tool cart with lifting function according to claim 1, characterized in that: The rear wheel assembly (3) includes a drive axle (16), a motor (17), a rear wheel (18), a U-bolt (19), and a battery (20). The drive axle (16) is transversely positioned at the lower rear end of the frame. Both ends of the drive axle (16) are connected to the frame via U-bolts (19). The motor (17) is located on one side of the drive axle (16) and connected to it. The rear wheel (18) is symmetrically arranged on both ends of the drive axle (16) and connected to it. The battery (20) is located on one side of the drive axle (16) and is electrically connected to the motor (17).

5. The tool cart with lifting function according to claim 2, characterized in that: The front assembly (5) includes a handle (21) and a lamp (22). The handle (21) is placed horizontally on the top of the steering column (10) and fixedly connected to it. The lamp (22) is arranged in the center of the upper part of the handle (21) and connected to the handle (21).

6. The tool cart with lifting function according to claim 2, characterized in that: The seat assembly (6) includes a sleeve (23), a strut (24), and a seat body (25). The sleeve (23) is fitted on the outside of the steering column (10) and fixedly connected to the frame (1). The strut (24) is arranged outside the sleeve (23) and can be raised, lowered, and rotated along the surface of the sleeve (23). The strut (24) and the sleeve (23) are connected by bolts. The seat body (25) is arranged at one end of the strut (24) for the driver to sit on.

7. The tool cart with lifting function according to claim 1, characterized in that: The brake assembly (7) includes a pedal (26), a support tube (27), a connecting plate (28), a cable (29), and a spring (30). There are two pedals (26), which are arranged separately and at intervals on the upper part of the platform. The support tube (27) is arranged inside the frame and connected by bearings. The upper part of the support tube (27) is staggered with connecting plates (28) that are fixedly connected to it. The connecting plates (28) are connected to the pedal (26) and the drive axle (16) respectively by cable (29). The lower part of the frame (1) is provided with a spring (30) that is connected to one of the connecting plates (28).

8. The tool cart with lifting function according to claim 1, characterized in that: The frame (1) has guardrails (4) arranged symmetrically on both sides to provide shielding and protection.

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