Foldable multifunctional automobile chassis maintenance workboard

CN224855851UActive Publication Date: 2026-10-16TIANJIN MECHANICAL & ELECTRICAL TECH COLLEGE (TIANJIN MECHANICAL & ELECTRICAL IND SCHOOL)
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Patent Information

Application Number
CN202522499201.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-11-25
Publication Date
2026-10-16
Estimated Expiration
2035-11-25

AI Technical Summary

Technical Problem

然而,现有的检修作业板存在一些不足之处

Benefits of technology

1、折叠收纳降低存储与运输成本

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a kind of foldable multifunctional automobile chassis overhaul operation board, including first operation board, the left side of first operation board is provided with second operation board, folding mechanism is provided between first operation board and second operation board, the bottom of first operation board and second operation board is fixedly installed with four universal wheels, the front side and the back of first operation board and second operation board are provided with auxiliary protection mechanism. First operation board and second operation board are set to realize that personnel lie on it to facilitate subsequent overhaul to the bottom of vehicle, folding mechanism is set to realize the connection between first operation board and second operation board, while after use, first operation board and second operation board can be folded, to facilitate subsequent carrying, the auxiliary protection mechanism is set to be used to protect personnel, avoid the danger caused by the unfirm fixing of automobile during overhaul.
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Description

Technical Field

[0001] This utility model relates to the field of automotive repair equipment technology, specifically to a foldable multi-functional automotive chassis repair work board. Background Technology

[0002] In automotive repair, inspecting the vehicle's chassis is a common and important task. Repair personnel need to perform various operations under the chassis, such as checking for wear and tear on parts, changing engine oil, and repairing the suspension system. However, existing inspection work boards have some shortcomings.

[0003] Traditional maintenance work boards are typically fixed structures, large and heavy, making them inconvenient to carry and store. In situations with limited maintenance space, fixed work boards can take up significant space and hinder other maintenance work. Furthermore, carrying such work boards is extremely inconvenient when traveling to different locations for maintenance.

[0004] In addition, existing work panels have relatively limited functionality, mostly providing only a simple support platform, which cannot meet the diverse needs of maintenance personnel in different maintenance scenarios. For example, during maintenance, maintenance personnel may need functions such as lighting, but existing work panels often cannot provide such comprehensive support.

[0005] Therefore, developing a foldable and multifunctional automotive chassis repair work board is of great practical significance, as it can effectively solve the problems existing in the current work boards and improve the quality and efficiency of automotive chassis repair work. Utility Model Content

[0006] The present invention aims to solve the problems mentioned in the background art by providing a foldable multi-functional automobile chassis inspection and maintenance work board.

[0007] The specific technical solution is as follows: A foldable multi-functional vehicle chassis maintenance work platform includes a first work platform, a second work platform is provided on the left side of the first work platform, a folding mechanism is provided between the first and second work platforms, four omnidirectional wheels are fixedly installed on the bottom of both the first and second work platforms, auxiliary protective mechanisms are provided on the front and rear sides of both the first and second work platforms, and a lighting mechanism is provided on the right side of the first work platform. The folding mechanism includes two grooves formed on the relatively close side of the first working plate and the second working plate, and a connecting strip set inside the grooves for connecting the first working plate and the second working plate. Limiting grooves are formed inside the first working plate and the second working plate and outside the grooves. Limiting pins are fixedly installed on both sides of the connecting strip, and the limiting pins penetrate into the interior of the limiting grooves. The auxiliary protection mechanism includes a limiting cover disposed on both sides of the first working plate and the second working plate, and an auxiliary support protection rod inserted inside the limiting cover. A third screw is threadedly connected to the side of the limiting cover away from the first working plate and the second working plate, and one side of the third screw is in contact with the surface of the auxiliary support protection rod.

[0008] As a preferred embodiment of this utility model, two locking blocks are fixedly installed on the right side of the second working plate, and a locking slot for cooperating with the locking blocks is opened on the left side of the first working plate, with the locking blocks penetrating into the interior of the locking slot.

[0009] As a preferred embodiment of this utility model, a first threaded groove is provided inside the first working plate and inside the card block, and a first screw is threadedly connected inside the first threaded groove.

[0010] As a preferred embodiment of this utility model, the first working plate and the second working plate are provided with mounting cavities on their front and rear sides. A bearing is fixedly installed inside the mounting cavity, and a connecting shaft is fixedly installed on the inner ring of the bearing. One side of the connecting shaft is fixedly connected to the limiting cover.

[0011] As a preferred embodiment of this utility model, the connecting shaft has two third threaded cavities inside, and the two third threaded cavities are distributed at a 90-degree angle along the surface of the connecting shaft. The top of the first working plate and the second working plate are both provided with second threaded cavities. The interior of the second threaded cavity is threaded with a second screw, and the bottom of the second screw is threaded into the interior of the third threaded cavity.

[0012] As a preferred embodiment of the present invention, the lighting mechanism includes a mounting slot on the right side of the first working plate, a storage battery is inserted into the mounting slot, and a lighting lamp is connected to the rear side of the storage battery.

[0013] In a preferred embodiment of this utility model, the connecting pipe between the battery and the lighting lamp is a gooseneck tube.

[0014] This utility model has the following beneficial effects: 1. Foldable storage reduces storage and transportation costs. Traditional automotive chassis repair often uses integrated reclining platforms or fixed workbenches, requiring separate garage corners or tool sheds for storage and necessitating transport by large vehicles such as trucks, making it impossible for a single person to move them independently. This device achieves flexible switching between "unfolding for work" and "folding for storage" through a folding mechanism: the first and second work platforms can be flipped and folded around the connecting axis via a connecting strip, limiting groove, and limiting pin. Furthermore, the folded design concentrates weight and stabilizes the center of gravity. Combined with the casters at the bottom of the work platforms, a single person can push or drag them to the repair location without the need for additional carrying tools.

[0015] 2. Provides auxiliary support and protection to mitigate the risk of vehicle falling. During vehicle chassis repair, insecure vehicle fixation is a core safety hazard leading to accidents. Traditional repair tools rely solely on the vehicle's own fixation without additional protective measures. This device's auxiliary protection mechanism constructs an "active protective barrier": both the front and rear sides of the first and second working plates are equipped with stand-up auxiliary support guard rods. In use, these are erected by rotating the connecting shaft around the bearing, and the second screw is tightened to lock the second and third threaded cavities. The extension length of the auxiliary support guard rod within the limiting cover is then adjusted and fixed with the third screw, ensuring the top of the guard rod abuts against the vehicle chassis or the bottom of the tires. This structure provides rigid support in the event of accidental vehicle displacement, making it particularly suitable for emergency field repairs or scenarios where specialized lifting equipment is unavailable. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the foldable multi-functional automobile chassis maintenance work board provided in this embodiment of the utility model; Figure 2 A schematic diagram of the second working board structure of the foldable multi-functional automobile chassis repair working board provided in this embodiment of the utility model; Figure 3 A schematic diagram of the first working board structure of the foldable multi-functional automobile chassis repair working board provided in this embodiment of the utility model; Figure 4 A schematic diagram of the left side of the first working board of the foldable multi-functional automobile chassis repair working board provided in this embodiment of the utility model; Figure 5 A schematic diagram of the lighting mechanism structure of the foldable multi-functional automobile chassis maintenance work board provided in this embodiment of the utility model; Figure 6 A schematic diagram of the auxiliary protection mechanism of the foldable multi-functional automobile chassis maintenance work plate provided in this embodiment of the utility model.

[0017] In the attached diagram: 1. First working plate; 2. Second working plate; 3. Folding mechanism; 301. Groove; 302. Limiting groove; 303. Locking block; 304. Connecting strip; 305. Limiting pin; 306. First screw; 307. Locking slot; 308. First threaded groove; 4. Caster wheel; 5. Lighting mechanism; 501. Mounting slot; 502. Battery; 503. Lighting lamp; 6. Auxiliary protection mechanism; 601. Limiting cover; 602. Auxiliary support and protection rod; 603. Mounting cavity; 604. Second threaded cavity; 605. Second screw; 606. Connecting shaft; 607. Bearing; 608. Third threaded cavity; 609. Third screw. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0020] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example The foldable, multi-functional automotive chassis repair work board provided in this embodiment, such as... Figures 1-6As shown, the system includes a first working platform 1, a second working platform 2 on the left side of the first working platform 1, a folding mechanism 3 between the first working platform 1 and the second working platform 2, four casters 4 fixedly installed at the bottom of both the first working platform 1 and the second working platform 2, auxiliary protective mechanisms 6 on the front and rear sides of both the first working platform 1 and the second working platform 2, and a lighting mechanism 5 on the right side of the first working platform 1. The first working platform 1 and the second working platform 2 allow personnel to lie on them for easy inspection of the vehicle's underside. The folding mechanism 3 connects the first working platform 1 and the second working platform 2 and allows them to be folded after use for easy transport. The auxiliary protective mechanism 6 helps protect personnel and prevents the vehicle from falling and causing danger during inspection if it is not securely fixed. The lighting mechanism 5 provides illumination for personnel to inspect the vehicle. The folding mechanism 3 includes two grooves 301 formed on the side of the first working plate 1 and the second working plate 2 that are relatively close to each other, and a connecting strip 304 set inside the grooves 301 for connecting the first working plate 1 and the second working plate 2. Limiting grooves 302 are formed inside the first working plate 1 and the second working plate 2 and outside the grooves 301. Limiting pins 305 are fixedly installed on both sides of the connecting strip 304. The limiting pins 305 penetrate into the limiting grooves 302. The grooves 301 are used to accommodate the connecting strip 304. The limiting grooves 302 and the limiting pins 305 connect the connecting strip 304 with respect to the first working plate 1 and the second working plate 2, and at the same time enable the connecting strip 304 to slide with respect to the first working plate 1 and the second working plate 2, thereby realizing the folding of the first working plate 1 and the second working plate 2. The auxiliary protection mechanism 6 includes a limiting cover 601 disposed on both sides of the first working plate 1 and the second working plate 2, and an auxiliary support protection rod 602 inserted inside the limiting cover 601. The side of the limiting cover 601 away from the first working plate 1 and the second working plate 2 is threaded with a third screw 609. One side of the third screw 609 is in contact with the surface of the auxiliary support protection rod 602. The limiting cover 601 is used to accommodate and install the auxiliary support protection rod 602. The auxiliary support protection rod 602 is used to support the vehicle and prevent it from falling during maintenance due to insecure vehicle fixing, which could affect personnel safety. The third screw 609 is used to fix the auxiliary support protection rod 602 relative to the limiting cover 601. There is a small gap between the auxiliary support protection rod 602 and the ground to facilitate the sliding of the omnidirectional wheel 4 and drive the overall movement.

[0023] Two locking blocks 303 are fixedly installed on the right side of the second working plate 2. A slot 307 for cooperating with the locking blocks 303 is opened on the left side of the first working plate 1. The locking blocks 303 penetrate into the interior of the slot 307. The locking blocks 303 and the slot 307 are used to increase the stability of the connection between the first working plate 1 and the second working plate 2.

[0024] Both the interior of the first working plate 1 and the interior of the locking block 303 are provided with a first threaded groove 308. A first screw 306 is threadedly connected inside the first threaded groove 308. The first threaded groove 308 and the first screw 306 fix the locking block 303 to the locking groove 307, thereby fixing the first working plate 1 and the second working plate 2.

[0025] The first working plate 1 and the second working plate 2 each have a mounting cavity 603 on their front and rear sides. A bearing 607 is fixedly installed inside the mounting cavity 603. A connecting shaft 606 is fixedly installed on the inner ring of the bearing 607. One side of the connecting shaft 606 is fixedly connected to the limiting cover 601. The mounting cavity 603 is used to install the bearing 607. The bearing 607 fixes the connecting shaft 606 and allows the connecting shaft 606 to rotate, thereby driving the limiting cover 601 and the auxiliary support guard rod 602 to rotate. When stored, the auxiliary support guard rod 602 is parallel to the first working plate 1 and the second working plate 2 for easy carrying.

[0026] The connecting shaft 606 has two third threaded cavities 608 inside, and the two third threaded cavities 608 are distributed at a 90-degree angle to each other along the surface of the connecting shaft 606. The top of the first working plate 1 and the second working plate 2 are both provided with second threaded cavities 604. The second threaded cavity 604 is threaded with a second screw 605. The bottom of the second screw 605 is threaded into the inside of the third threaded cavity 608. The arrangement of the second threaded cavity 604, the third threaded cavity 608 and the second screw 605 fixes the connecting shaft 606, thereby stabilizing the auxiliary support guard rod 602 when it is erected and stored.

[0027] The lighting mechanism 5 includes a mounting slot 501 located on the right side of the first working plate 1. A storage battery 502 is inserted into the mounting slot 501, and a lighting lamp 503 is connected to the rear side of the storage battery 502. The mounting slot 501 is used to accommodate the storage battery 502, and the storage battery 502 and the lighting lamp 503 are used to provide lighting for personnel during maintenance.

[0028] The connecting pipe between the battery 502 and the lighting lamp 503 is a gooseneck tube. The gooseneck tube allows for easy adjustment of the lighting lamp 503 at any angle during actual use, thereby meeting the needs of maintenance.

[0029] Working principle: 1. Preliminary preparations: Unlocking the storage status and locating the item during transport. The device is initially in a folded storage mode. Unlocking and positioning during transportation are required to lay the foundation for subsequent deployment operations. Storage status check: Initially, the first and second working plates are folded and fitted together, with the connecting strip stored in the grooves of both. The limiting pin is located at the end of the limiting groove to achieve initial limiting. The auxiliary support protective rod of the auxiliary protection mechanism is parallel to the working plate and is locked by the second screw passing through the second threaded cavity and screwing into the third threaded cavity of the connecting shaft. The battery of the lighting mechanism is inserted into the mounting slot, and the lighting lamp is bent and stored on the side of the working plate through the gooseneck tube. The overall structure is compact.

[0030] Transportation and positioning: Using the casters at the bottom of the first and second working plates, a single person can push the device along the ground. The 360° steering function of the casters can flexibly adjust the direction of movement, easily transferring the device to a flat ground directly under the vehicle to be repaired. The stability of the folded state during the pushing process is ensured by the cooperation of the limit pin and the limit groove to avoid accidental unfolding.

[0031] 2. Core Deployment: Unlocking and Rigid Fixing of the Working Board Upon reaching the maintenance location, the device must be unfolded from its folded state into its operational state, and a multi-locking structure must be used to ensure stability during operation. Unlocking and unfolding the folding mechanism: Hold the ends of the first and second working plates with both hands and apply pulling force in opposite directions to slowly rotate and unfold them around the axis of the connecting strip. At this time, the limiting pins on both sides of the connecting strip slide along the limiting grooves of the first and second working plates to provide guidance for the unfolding process and prevent deviation. When the two working plates are unfolded to a 180° horizontal state, the two locking blocks on the right side of the second working plate are precisely inserted into the locking groove on the left side of the first working plate to form a preliminary positioning, and the unfolding process is completed.

[0032] Double locking ensures rigidity: After the card block is inserted into the card slot, the first screw is screwed into the first threaded groove that aligns with the first working plate using a tool. The card block and the card slot are rigidly fixed through the threaded connection, thereby making the first working plate and the second working plate form an integral horizontal working surface. This double locking structure can resist vibration and impact during maintenance, ensure the stable load-bearing capacity of the working surface, and avoid the risk of shaking or folding during operation.

[0033] Fine-tuning of the working position: If there is a misalignment between the working plate and the vehicle chassis after unfolding, the working plate can be fine-tuned by pushing the swivel wheels at the bottom until the length direction of the working plate is consistent with the length direction of the vehicle chassis, and the maintenance personnel can easily reach the part to be repaired after lying down. After fine-tuning, the position can be locked by the brake pads of the swivel wheels to prevent displacement during operation.

[0034] 3. Security Deployment: Erecting and locking auxiliary protection mechanisms To mitigate the risk of vehicles falling due to insecure securing, the auxiliary protective mechanism must be switched from its stowed state to its protective state to create a safety barrier. Unlocking and raising the protective rod: Use a tool to unscrew the second screws on the top of the first and second working plates, disengaging the second screws from the third threaded cavity on the connecting shaft in its retracted state, thus releasing the locking of the connecting shaft. Then, hold the end of the auxiliary support protective rod and rotate the limit cover upwards around the axis of the connecting shaft. The connecting shaft rotates smoothly through the cooperation of the bearing and the mounting cavity. When the protective rod rotates to a position perpendicular to the working plate, the other third threaded cavity on the connecting shaft is precisely aligned with the second threaded cavity on the working plate. At this point, stop rotating.

[0035] Protective bar height adjustment and fixing: Loosen the third screw on the outside of the limit cover, push the auxiliary support protective bar to move along the axis of the limit cover, adjust its extension length so that the top of the protective bar accurately abuts against the crossbeam of the vehicle chassis or the bottom of the tire. After abutting, tighten the third screw. The height of the protective bar is fixed by the squeezing friction between the screw and the surface of the protective bar. At this time, the four auxiliary protective mechanisms form a rectangular protective frame around the work plate, providing active protection for maintenance personnel.

[0036] 4. Lighting adjustment: Lighting mechanism start-up and angle adaptation To address the issue of dim lighting under the vehicle chassis, a lighting mechanism provides directional and precise illumination, offering a clear view for inspections. Lighting system startup: Check that the battery in the mounting slot is properly connected. Once confirmed, start the power supply via the battery switch. Current is transmitted to the lighting lamp through the wires inside the gooseneck tube, and the lamp lights up. The battery uses a plug-in design; if the power is insufficient, it can be directly removed and replaced with a spare battery, ensuring continuous maintenance.

[0037] Precise adjustment of lighting angle: Utilizing the flexible and shape-setting properties of the gooseneck tube, the light from the lamp can be precisely focused on the part of the chassis to be inspected by bending the gooseneck tube between the lamp and the battery. The gooseneck tube can be bent at any angle of 360° and is stable in shape, which can adapt to the complex spatial structure of the chassis, avoid the problem of light swaying in traditional handheld lamps, and improve the accuracy of maintenance.

[0038] 5. Maintenance work: personnel operation and mechanism coordination Once all components are deployed, maintenance personnel can begin chassis overhaul work, with each component working together to ensure both efficiency and safety. Personnel lying down and moving during operation: Maintenance personnel lie down on the unfolded and fixed work platform. The horizontal surface of the work platform is ergonomically designed to reduce fatigue from prolonged lying down. If it is necessary to move the work platform along the length of the chassis for maintenance, the personnel can use their hands and feet to push their body to move the work platform. The low resistance of the casters ensures smooth movement without the need to repeatedly get up to adjust the position.

[0039] Safety protection is effective in real time: During operation, if the vehicle shifts slightly or the jack becomes loose, the auxiliary support guard bar will form a rigid contact with the vehicle chassis to prevent the vehicle from sinking further, providing maintenance personnel with sufficient escape time or buffer space, greatly reducing the risk of safety accidents. At the same time, the rigid fixed structure of the work platform ensures the stability of personnel movement and avoids the shaking of the work surface from affecting the accuracy of operation.

[0040] Continuous lighting adaptation: When inspecting different parts, the angle of the lighting can be adjusted at any time by bending the gooseneck tube, so that the light is always focused on the current inspection point. No one needs to help adjust the lighting, enabling independent inspection by a single person.

[0041] 6. Final Storage: Reset the mechanism and fold it for safekeeping. After maintenance is completed, all mechanisms must be reset to their stored state according to the established procedures to facilitate subsequent storage and transportation. Lighting mechanism reset: Turn off the battery switch to disconnect the lighting power supply. Bend the light bulb through the gooseneck tube and store it on the side of the first working plate, ensuring that the light bulb does not protrude from the outline of the working plate to avoid collision damage during storage. If the battery power is low, it can be removed and charged separately. Before the next use, plug it back into the mounting slot.

[0042] Auxiliary protective mechanism storage: Loosen the third screw, retract the auxiliary support protective rod into the limit cover, tighten the third screw to fix it, then unscrew the second screw, rotate the protective rod around the connecting shaft until it is parallel to the working plate. At this time, the third threaded cavity on the connecting shaft corresponding to the storage state is aligned with the second threaded cavity. Screw in the second screw to lock it, and the protective mechanism storage is completed.

[0043] Folding and fixing of the work plate: Unscrew the first screw to release the rigid fixation of the first and second work plates. Hold the ends of the two work plates with both hands and apply pressure to the middle to make them flip and fold around the axis of the connecting strip. The limit pin slides along the limit groove to the end. At this time, the two work plates are in contact, and the folding state is completed. After folding, the overall length is reduced to half of the unfolded state. With casters, it can be easily pushed to the corner of the garage or tool room for storage, greatly reducing the storage space occupied.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A foldable, multi-functional automotive chassis maintenance work board, characterized in that, Includes a first working board (1), a second working board (2) is provided on the left side of the first working board (1), a folding mechanism (3) is provided between the first working board (1) and the second working board (2), four universal wheels (4) are fixedly installed at the bottom of the first working board (1) and the second working board (2), auxiliary protective mechanisms (6) are provided on the front and rear sides of the first working board (1) and the second working board (2), and a lighting mechanism (5) is provided on the right side of the first working board (1); The folding mechanism (3) includes two grooves (301) formed on the side of the first working plate (1) and the second working plate (2) that are relatively close to each other, and a connecting strip (304) set inside the grooves (301) for connecting the first working plate (1) and the second working plate (2). Limiting grooves (302) are formed inside the first working plate (1) and the second working plate (2) and outside the grooves (301). Limiting pins (305) are fixedly installed on both sides of the connecting strip (304), and the limiting pins (305) penetrate into the interior of the limiting grooves (302). The auxiliary protective mechanism (6) includes a limiting cover (601) disposed on both sides of the first working plate (1) and the second working plate (2) and an auxiliary support protective rod (602) inserted inside the limiting cover (601). The side of the limiting cover (601) away from the first working plate (1) and the second working plate (2) is threaded with a third screw (609), and one side of the third screw (609) is in contact with the surface of the auxiliary support protective rod (602).

2. The foldable multi-functional automotive chassis maintenance work board according to claim 1, characterized in that, Two card blocks (303) are fixedly installed on the right side of the second working plate (2), and a card slot (307) for cooperating with the card blocks (303) is opened on the left side of the first working plate (1). The card blocks (303) penetrate into the interior of the card slot (307).

3. The foldable multi-functional automotive chassis maintenance work board according to claim 2, characterized in that, The first working plate (1) and the card block (303) are both provided with a first threaded groove (308), and a first screw (306) is threadedly connected inside the first threaded groove (308).

4. The foldable multi-functional automotive chassis maintenance work board according to claim 1, characterized in that, The first working plate (1) and the second working plate (2) are provided with mounting cavities (603) on the front and rear sides. A bearing (607) is fixedly installed inside the mounting cavity (603). A connecting shaft (606) is fixedly installed on the inner ring of the bearing (607). One side of the connecting shaft (606) is fixedly connected to the limiting cover (601).

5. The foldable multi-functional automotive chassis maintenance work board according to claim 4, characterized in that, The connecting shaft (606) has two third threaded cavities (608) inside, and the two third threaded cavities (608) are distributed at a 90-degree angle to each other along the surface of the connecting shaft (606). The top of the first working plate (1) and the second working plate (2) are both provided with second threaded cavities (604). The second threaded cavity (604) is threaded with a second screw (605), and the bottom of the second screw (605) is threaded to the inside of the third threaded cavity (608).

6. The foldable multi-functional automotive chassis maintenance work board according to claim 1, characterized in that, The lighting mechanism (5) includes a mounting slot (501) on the right side of the first working plate (1), a storage battery (502) is inserted into the mounting slot (501), and a lighting lamp (503) is connected to the rear side of the storage battery (502).

7. The foldable multi-functional automotive chassis maintenance work board according to claim 6, characterized in that, The connecting pipe between the storage battery (502) and the lighting lamp (503) is a gooseneck pipe.