Multi-functional mechanical hand maintenance vehicle
By designing a multi-functional robotic arm maintenance vehicle that integrates lifting devices and a control system, the problem of disassembling and transporting robotic arm equipment in the nuclear industry has been solved, enabling simple and efficient robotic arm maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU AEROSPACE FENGHUO PRECISION ELECTROMECHANICAL
- Filing Date
- 2025-06-24
- Publication Date
- 2026-06-05
AI Technical Summary
In specialized industries such as nuclear industry, robotic arms are difficult to disassemble, transport, and maintain due to their large weight and complex environment. Existing maintenance methods are complex, dangerous, and require the coordination of multiple devices.
A multi-functional robotic arm maintenance vehicle was designed, integrating a lifting device, boom, hook, hand chain hoist, support arm and controller. The robotic arm can be used for lifting and transporting through manual and electric controllers, adapting to narrow spaces and special working conditions.
It enables simple and efficient disassembly, assembly, and transfer of the robotic arm, reducing operational complexity and safety hazards, and improving maintenance efficiency and safety.
Smart Images

Figure CN224325071U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a robotic arm repair vehicle, and more particularly to a multifunctional robotic arm repair vehicle integrating multiple functions. Background Technology
[0002] In specialized industries such as nuclear power, where the objects being worked on are radioactive, close-range operation is impossible. Instead, remote operation is achieved using robotic arms, often through thick concrete walls. Extreme working conditions, complex environments, and metal structure fatigue can all damage these robotic arms and similar equipment. Therefore, robotic arms require repair or regular maintenance and replacement of vulnerable parts when malfunctioning. Besides robotic arms, other equipment requiring maintenance exists in specific environments.
[0003] Due to the heavy weight of robotic arms and other equipment, disassembly and transportation are difficult to complete manually. Furthermore, the unique operating environment of some equipment (such as limited operating space) makes it inconvenient for personnel to directly access and maintain multiple pieces of equipment. Commonly used lifting equipment is often insufficient to meet maintenance requirements, leading to difficulties in daily maintenance and replacement of vulnerable parts.
[0004] To address the aforementioned maintenance difficulties, several traditional methods are generally employed: First, overhead cranes are used to hoist the robotic arm onto a transport vehicle using a long hoisting method. This method presents challenges due to the use of large equipment, the long distance the crane travels, the large space required, and the increased risk of disassembling and assembling the robotic arm, especially in harsh environments where operation is difficult and requires specific tools and cumbersome procedures. Second, small mobile cranes are used for auxiliary hoisting. The basic idea is to use a small mobile crane to hoist the robotic arm, and then manually place it onto a transport vehicle for transport to the maintenance room for repair. This method requires the use of multiple pieces of equipment and is complex. Third, manual maintenance and repair of the equipment outside the robotic arm is performed using ladders and other working equipment. This method is cumbersome, requires numerous tools, poses safety hazards, and some equipment is heavy, making disassembly and assembly difficult and demanding high levels of manual skill. Utility Model Content
[0005] The purpose of this utility model is to provide a multi-functional robotic arm maintenance vehicle that integrates multiple functions and is easy to operate in order to solve the above-mentioned problems.
[0006] This utility model achieves the above objectives through the following technical solutions:
[0007] A multi-functional robotic arm maintenance vehicle includes a base with rollers mounted on its bottom. The vehicle also includes a lifting device, a boom, a hook, a hand-operated hoist, a support arm, and a controller. The lifting device is mounted on the base. The lower end of the inverted "L"-shaped boom is connected to the lifting device. The hook is mounted on the upper, suspended end of the boom. The hand-operated hoist is mounted on the hook. One end of the horizontal support arm is mounted on the lifting device and is capable of lateral rotation. The controller is mounted on the base and can control the lifting device to move vertically.
[0008] Preferably, to better control the lifting and lowering movements of the boom and support arm and improve control reliability, the controller includes a manual controller and an electric controller. The lifting device includes a lifting seat, a manual hydraulic pump, an electric hydraulic pump, a hydraulic cylinder, and a lifting frame. The lifting seat is mounted on the base. The manual hydraulic pump and the electric hydraulic pump are respectively mounted inside the base. The hydraulic cylinder is mounted on the lifting seat. The upper end of the telescopic rod of the upper part of the hydraulic cylinder is connected to the lifting frame. The lower end of the boom is connected to the lifting frame. One end of the support arm is mounted on the lower part of the lifting frame. The manual controller is mechanically connected to the manual hydraulic pump and is used to control the operation of the manual hydraulic pump. The electric controller is electrically connected to the electric hydraulic pump and is used to control the operation of the electric hydraulic pump. The manual hydraulic pump and the electric hydraulic pump are respectively connected to the hydraulic cylinder through oil pipes.
[0009] Preferably, in order to realize the electric movement function of the entire maintenance vehicle, a moving motor is also installed in the base. The control terminal of the moving motor is electrically connected to the electric controller, and the rotating shaft of the moving motor is connected to some or all of the rollers through a transmission structure.
[0010] Preferably, in order to increase the lifting stroke of the lifting frame without changing the lifting stroke of the hydraulic cylinder, the lifting device further includes a pulley and a chain. The pulley is installed at the upper end of the telescopic rod of the hydraulic cylinder, one end of the chain is connected to the lower end of the boom, and the other end of the chain is connected to the lifting seat.
[0011] Preferably, in order to transport workers to higher positions when necessary, the multi-functional robotic arm maintenance vehicle also includes a workbench or work frame, the lower part of the boom is provided with a boom connecting part, and the lower side of one side of the workbench or work frame is provided with a working connecting part, and the boom connecting part and the working connecting part are connected by hand-tightened bolts.
[0012] Preferably, for ease of application, there are two support arms, located on the lateral sides of the boom.
[0013] The beneficial effects of this utility model are as follows:
[0014] This utility model integrates hoisting and transportation functions into a multi-functional robotic arm maintenance vehicle, enabling robotic arm maintenance in confined spaces and special working conditions. It features a simple and compact structure, is easy to use, and is suitable for various operating environments. It eliminates the need for multiple devices in maintenance, making operation simpler, more efficient, and safer. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural schematic diagram of the multifunctional robotic arm maintenance vehicle described in this utility model, and the robotic arm is also shown in the figure;
[0016] Figure 2 This is one of the side view structural schematic diagrams of the multifunctional robotic arm repair vehicle described in this utility model when it is in use;
[0017] Figure 3 This is the second side view structural schematic diagram of the multifunctional robotic arm repair vehicle described in this utility model when it is in use;
[0018] Figure 4 This is the third side view structural schematic diagram of the multifunctional robotic arm repair vehicle described in this utility model when it is in use;
[0019] Figure 5 This is the fourth side view structural diagram of the multifunctional robotic arm repair vehicle described in this utility model. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings:
[0021] like Figure 1 As shown, the multifunctional robotic arm repair vehicle of this utility model includes a base 10, a lifting device 6, a boom 1, a hook 2, a hand-operated hoist 3, a support arm 7, and a controller (refer to the manual controller 9 and electric controller 8 below). Rollers (not marked in the figure) are installed at the bottom of the base 10. The lifting device 6 is installed on the base 10. The lower end of the inverted "L"-shaped boom 1 is connected to the lifting device 6. The hook 2 is installed on the upper horizontal arm of the boom 1. The hand-operated hoist 3 is installed on the hook 2. One end of the horizontal support arm 7 is installed on the lifting device 6 and can rotate horizontally. The controller is installed on the base 10 and can control the lifting device 6 to move up and down.
[0022] like Figure 1 As shown, this utility model also discloses the following more optimized specific structures:
[0023] To better control the lifting and lowering movements of the boom 1 and support arm 7 and improve control reliability, the controller includes a manual controller 9 and an electric controller 8. The lifting device 6 includes a lifting seat 65, a manual hydraulic pump (not visible in the figure), an electric hydraulic pump (not visible in the figure), a hydraulic cylinder 64, and a lifting frame 61. The lifting seat 65 is mounted on the base 10. The manual hydraulic pump and the electric hydraulic pump are respectively mounted inside the base 10. The hydraulic cylinder 64 is mounted on the lifting seat 65. The upper end of the telescopic rod 63 on the upper part of the hydraulic cylinder 64 is connected to the lifting frame 61. The lower end of the boom 1 is connected to the lifting frame 61. One end of the support arm 7 is mounted on the lower part of the lifting frame 61. The manual controller 9 is mechanically connected to the manual hydraulic pump and is used to control the operation of the manual hydraulic pump. The electric controller 8 is electrically connected to the electric hydraulic pump and is used to control the operation of the electric hydraulic pump. The manual hydraulic pump and the electric hydraulic pump are respectively connected to the hydraulic cylinder 64 through oil pipes.
[0024] In order to realize the electric movement function of the entire maintenance vehicle, a mobile motor (not visible in the figure) is also installed in the base 10. The control end of the mobile motor is electrically connected to the electric controller 8. The rotating shaft of the mobile motor is connected to some or all of the rollers through a transmission structure (such as conventional transmission structures such as gears, which will not be described in detail here).
[0025] In order to increase the lifting stroke of the lifting frame 61 without changing the lifting stroke of the hydraulic cylinder 64, the lifting device 6 also includes a pulley (the area shown in the figure is too small to be marked) and a chain 62. The pulley is installed on the upper end of the telescopic rod 63 of the hydraulic cylinder 64, one end of the chain 62 is connected to the lower end of the boom 1, and the other end of the chain 62 is connected to the lifting seat 65.
[0026] In order to transport workers to higher positions when necessary, the multi-functional robotic arm maintenance vehicle also includes a workbench or work frame 5. The lower part of the boom 1 is provided with a boom connecting part (a pin hole in the figure, not marked), and the lower part of one side of the workbench or work frame 5 is provided with a working connecting part (a connecting lug in the figure, not marked). The boom connecting part and the working connecting part are connected by a hand-tightening bolt 11.
[0027] For ease of use, there are two support arms 7, which are located on the lateral sides of the boom 1.
[0028] like Figures 1-5 As shown, the multi-functional robotic arm maintenance vehicle of this utility model includes the following application scenarios:
[0029] During maintenance of robotic arm 4, which is mounted on the wall, it needs to be disassembled. The maintenance vehicle is moved to the installation location of robotic arm 4, the support arm 7 is extended, and the lifting device 6 is activated via the manual controller 9 or electric controller 8 to raise the lifting point above the installation point of robotic arm 4. The robotic arm 4 is then hoisted onto the boom 1 using slings. Robotic arm 4 is then disassembled, and after disassembly, the support arm is retracted to lower the height of robotic arm 4, bringing it into contact with the suspended end of the support arm 6 (e.g., ...). Figure 2 and Figure 3 (As shown), the robotic arm 4 is then transported to the maintenance area. During installation, the robotic arm 4 is first transported to the installation location, then raised to the installation height for installation. Even in confined working environments, a single multi-functional robotic arm maintenance vehicle can meet the needs of disassembling, assembling, and transporting the robotic arm.
[0030] When inspecting and lifting other equipment, if it is not necessary to dismantle the upper structure of boom 1, rotate support arm 7 180° away from the suspended end of boom 1 to create operating space. Workers can then use the hand-operated hoist 3 to lift heavier equipment (such as...). Figure 4 (As shown); if the upper structure of boom 1 needs to be dismantled, first remove the upper structure of boom 1, then connect the workbench or work frame 5 to the lower part of boom 1 by hand-tightening bolts 11. Rotate the support arm 7 180° away from the suspended end of boom 1 (which has been removed at this time, but does not affect the explanation of its directional relationship) to leave operating space. At this time, the worker can stand on the workbench or work frame 5 and use the lifting device 6 to lift the workbench or work frame 5 to a higher position, which facilitates the worker to inspect the equipment at a higher position (such as...). Figure 5 (As shown).
[0031] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.
Claims
1. A multi-functional robotic arm maintenance vehicle, comprising a base, wherein rollers are mounted on the bottom of the base, characterized in that: The multi-functional robotic arm maintenance vehicle also includes a lifting device, a boom, a hook, a hand chain hoist, a support arm, and a controller. The lifting device is installed on the base. The lower end of the inverted "L"-shaped boom is connected to the lifting device. The hook is installed on the upper horizontal arm of the boom. The hand chain hoist is installed on the hook. One end of the horizontal support arm is installed on the lifting device and can rotate horizontally. The controller is installed on the base and can control the lifting device to move up and down.
2. The multi-functional robotic arm maintenance vehicle according to claim 1, characterized in that: The controller includes a manual controller and an electric controller. The lifting device includes a lifting seat, a manual hydraulic pump, an electric hydraulic pump, a hydraulic cylinder, and a lifting frame. The lifting seat is mounted on the base. The manual hydraulic pump and the electric hydraulic pump are respectively mounted inside the base. The hydraulic cylinder is mounted on the lifting seat. The upper end of the telescopic rod of the upper part of the hydraulic cylinder is connected to the lifting frame. The lower end of the boom is connected to the lifting frame. One end of the support arm is mounted on the lower part of the lifting frame. The manual controller is mechanically connected to the manual hydraulic pump and is used to control the operation of the manual hydraulic pump. The electric controller is electrically connected to the electric hydraulic pump and is used to control the operation of the electric hydraulic pump. The manual hydraulic pump and the electric hydraulic pump are respectively connected to the hydraulic cylinder through oil pipes.
3. The multi-functional robotic arm maintenance vehicle according to claim 2, characterized in that: The base also houses a mobile motor, the control terminal of which is electrically connected to the electric controller. The rotating shaft of the mobile motor is connected to some or all of the rollers via a transmission structure.
4. The multi-functional robotic arm maintenance vehicle according to claim 2 or 3, characterized in that: The lifting device also includes pulleys and chains. The pulleys are installed on the upper end of the telescopic rod of the hydraulic cylinder. One end of the chain is connected to the lower end of the boom, and the other end of the chain is connected to the lifting seat.
5. The multi-functional robotic arm maintenance vehicle according to any one of claims 1-3, characterized in that: The multi-functional robotic arm maintenance vehicle also includes a workbench or work frame, the lower part of the boom is provided with a boom connecting part, and the lower side of one side of the workbench or work frame is provided with a working connecting part, and the boom connecting part and the working connecting part are connected by hand-tightening bolts.
6. The multi-functional robotic arm maintenance vehicle according to any one of claims 1-3, characterized in that: There are two support arms, which are located on the lateral sides of the boom.