Detection fault maintenance display device for automobile assembly

Abstract

The invention provides a detection fault maintenance display device for automobile assembly. Relates to the technical field of fault detection, in particular to a fault detection and maintenance display device for automobile assembly, which comprises a bearing plate fixedly mounted in a U-shaped bottom plate, two moving plates slidably sleeve the bearing plate, two hinge plates are mounted on the outer walls of one sides of the two moving plates in a hinged manner respectively, and a connecting plate is mounted at the top ends of the four hinge plates in a hinged manner. A connecting plate is fixedly installed on the top of the U-shaped bottom plate, a placing plate is fixedly installed on the top of the connecting plate, a double-shaft motor is fixedly installed on the top of the U-shaped bottom plate, adjusting screw rods are fixedly installed on two output shafts of the double-shaft motor correspondingly, and the two adjusting screw rods are rotationally connected with the inner wall of the U-shaped bottom plate. The detection fault maintenance display device for automobile assembly has the advantages that use is convenient, operation is easy, and the situation that the service life is affected due to stress deformation of the adjusting screw rod is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of fault detection, and in particular to a fault detection and repair display device for automobile assembly. Background Art

[0002] A car is a non-track-borne vehicle that is powered by power and has four or more wheels. It is mainly used to carry people or goods. As one of the most important means of transportation in modern society, cars have penetrated into all aspects of people's lives, from city roads to remote villages. Different car brands and models travel on the streets, becoming an important link between people and the world. When a car fails in production and assembly, people generally use maintenance display devices to repair and display the failed car, thereby achieving the purpose of publicity. In order to make it easier for viewers at a distance to see the car, a height adjustment device is generally set on the maintenance display device to adjust the car to a higher position so that more people can see the car.

[0003] However, all the weight of the existing maintenance display device is on the adjusting screw, which causes the adjusting screw to be under stress for a long time. Over time, the adjusting screw will deform due to the long-term stress, reducing the service life of the screw.

[0004] Therefore, it is necessary to provide a detection fault repair display device for automobile assembly to solve the above technical problems.

[0005] Practical Invention Content

[0006] The technical problem solved by the invention is to provide a detection fault maintenance display device for automobile assembly which is easy to use, simple to operate and can prevent the adjusting screw from being deformed by force and affecting the service life.

[0007] In order to solve the above technical problems, the present invention provides a fault detection and maintenance display device for automobile assembly, comprising: a load-bearing plate fixedly installed in a U-shaped bottom plate, a sliding sleeve on the load-bearing plate is provided with two movable plates, two hinged plates are respectively hingedly installed on one side outer walls of the two movable plates, a connecting plate is hingedly installed on the top of the four hinged plates, a placing plate is fixedly installed on the top of the connecting plate, a double-axis motor is fixedly installed on the top of the U-shaped bottom plate, adjusting screws are respectively fixedly installed on the two output shafts of the double-axis motor, and the two adjusting screws are rotatably connected to the inner wall of the U-shaped bottom plate, two U-shaped adjusting plates are arranged in the U-shaped bottom plate, and the two U-shaped adjusting plates are Through openings are respectively opened, the two adjusting screws respectively penetrate the two through openings and are respectively movably connected to the inner walls of the two through openings, the two adjusting screws are respectively threaded with fixing nuts, and the two fixing nuts are respectively fixedly connected to the inner walls of the two through openings, the two U-shaped adjustment plates are respectively threadedly installed with rotating screws, and the two rotating screws respectively penetrate the corresponding U-shaped adjustment plates, the two ends of the two rotating screws are respectively fixedly installed with U-shaped mounting plates, and the openings of the two U-shaped mounting plates located in the middle face downward, and the openings of the U-shaped mounting plates located on both sides face upward, and cleaning brushes are respectively rotatably installed in the four U-shaped mounting plates.

[0008] Preferably, a protective cover is fixedly mounted on the top of the U-shaped bottom plate, and the dual-axis motor is located inside the protective cover.

[0009] Preferably, the bottoms of the two U-shaped adjustment plates are respectively provided with mounting grooves, and the two mounting grooves are respectively communicated with the two through openings, the bottoms of the two U-shaped adjustment plates are respectively provided with mounting cross plates, the two mounting cross plates are respectively provided with rectangular through openings, the tops of the two mounting cross plates are respectively fixedly installed with lubricating oil tanks, the bottom inner walls of the two lubricating oil tanks are respectively fixedly installed with vertical plates, the two vertical plates are respectively rotatably installed with rotating rods, and the two rotating rods respectively penetrate the two vertical plates, the two rotating rods are respectively fixedly sleeved with two sponge smear rollers, and the four The sponge applicator rollers are all in contact with the adjusting screws, and fixed plates are respectively fixedly installed on the outer walls of both sides of the two U-shaped adjusting plates, and sliding rods are respectively slidably installed on the four fixed plates, and the four sliding rods respectively pass through the corresponding rectangular openings, and rectangular pull plates are respectively fixedly installed on the bottom ends of the four sliding rods, and circular plates are respectively fixedly installed on the top ends of the four sliding rods, and force springs are respectively movably sleeved on the four sliding rods, and the top ends of the four force springs are respectively fixedly connected to the corresponding circular plates, and the bottom ends of the four force springs are respectively fixedly connected to the corresponding fixed plates.

[0010] Preferably, the four force-bearing springs are all tin-plated springs.

[0011] Preferably, a dustproof sponge ring is slidably sleeved on each of the two adjusting screws, and the four dustproof sponge rings are fixedly connected to the two U-shaped adjusting plates respectively.

[0012] Preferably, the two vertical plates are respectively provided with rotation holes, and rotation bearings are respectively fixedly installed in the two rotation holes, and the two rotation rods respectively penetrate the two rotation bearings and are respectively fixedly connected to the inner walls of the two rotation bearings.

[0013] Preferably, the two U-shaped adjustment plates are respectively provided with threaded holes, and the two rotating screws respectively penetrate the two threaded holes and are respectively screwed with the inner walls of the two threaded holes.

[0014] Preferably, four universal wheels are fixedly mounted on the bottom of the U-shaped bottom plate, and the four universal wheels are distributed in a rectangular array.

[0015] Preferably, a plurality of mounting holes are provided on the top of the placement plate.

[0016] Compared with the related art, the automobile assembly fault detection and repair display device provided by the present invention has the following beneficial effects:

[0017] The present invention provides a fault detection and repair display device for automobile assembly. The faulty automobile is first fixed on a placement plate. Workers inspect and display the faulty automobile on the placement plate. The tops of four hinged plates are moved upward by rotating a double-axis motor, and finally the connecting plate, the placement plate and the faulty automobile are moved upward, so that people at a distance can clearly watch the inspection and repair of the faulty automobile, thereby improving the publicity effect. Since the moving plate is in contact with the load-bearing plate, the weight of the moving plate, the hinged plate, the connecting plate, the placement plate and the faulty automobile is all borne on the load-bearing plate, and the adjusting screw is always in a non-stressed state, so the adjusting screw will not be deformed due to stress, thereby greatly improving the usability of the adjusting screw. At the same time, the rotation of the adjusting screw drives the cleaning brush to rotate through the friction force to inspect and clean the dust and impurities adhered to the adjusting screw. At the same time, the rotation of the adjusting screw drives the sponge coating roller through the friction force to apply the lubricating oil in the lubricating oil tank to the adjusting screw. The lubricating oil reduces the wear of the adjusting screw and the fixing nut and increases the service life of the adjusting screw and the fixing nut. The staff first rotates the sliding rod to drive the rectangular pull plate to rotate to pass through the rectangular opening, and then drives the rectangular opening through the rectangular opening under the action of the force spring. Move the installation cross plate downward to drive the lubricating oil tank to move downward and out of the through-opening. People can add lubricating oil to the lubricating oil tank. The process is simple, fast and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A schematic diagram of the main structure of the fault detection and repair display device for automobile assembly provided by the present invention;

[0019] Figure 2 for Figure 1 An enlarged schematic diagram of section A is shown;

[0020] Figure 3 for Figure 2 An enlarged schematic diagram of portion B is shown;

[0021] Figure 4 for Figure 1 The exploded view of the placement plate, the connecting plate, the moving plate and the bearing plate shown;

[0022] Figure 5 for Figure 1 Exploded view of the assembly of the lubricant, vertical plate and sponge applicator roller shown;

[0023] Figure 6 for Figure 1 A partial bottom view of the fixing plate, the rectangular pull plate and the rectangular opening shown;

[0024] Figure 7 for Figure 1 The assembly diagram of the rotating screw and the U-shaped mounting plate shown;

[0025] Figure 8 This is a schematic diagram of the main structure of the automobile assembly fault detection and repair display device provided by the present invention.

[0026] Numbers in the figure: 1. U-shaped bottom plate; 2. Dual-axis motor; 3. Adjusting screw; 4. U-shaped adjusting plate; 5. Load-bearing plate; 6. Moving plate; 7. Hinge plate; 8. Connecting plate; 9. Placement plate; 10. Rotating screw; 11. U-shaped mounting plate; 12. Cleaning brush; 13. Fixing nut; 14. Dust-proof sponge ring; 15. Through-hole; 16. Lubricating oil tank; 17. Vertical plate; 18. Rotating rod; 19. Sponge applicator roller; 20. Mounting horizontal plate; 21. Rectangular hole; 22. Fixed plate; 23. Sliding rod; 24. Force spring; 25. Circular plate; 26. Rectangular pull plate; 27. Protective cover. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0028] Please refer to Figure 1-Figure 8In the present invention, the automobile assembly fault detection and repair display device comprises: a load-bearing plate 5 fixedly installed in a U-shaped bottom plate 1. In order to make it more convenient for people to move the device, four universal wheels are fixedly installed at the bottom of the U-shaped bottom plate 1, and the four universal wheels are distributed in a rectangular array. Two movable plates 6 are slidably sleeved on the load-bearing plate 5. Two hinged plates 7 are hingedly installed on one side outer wall of the two movable plates 6, respectively. A connecting plate 8 is hingedly installed on the top of the four hinged plates 7. A placement plate 9 is fixedly installed on the top of the connecting plate 8. Since the movable plate 6 is in contact with the load-bearing plate 5, the weight of the movable plate 6, the hinged plate 7, the connecting plate 8, the placement plate 9 and the faulty car are all borne on the load-bearing plate 5, and the adjusting screw 3 is always in In a non-stressed state, the adjusting screw 3 will not be deformed due to stress, which greatly improves the service life of the adjusting screw 3. In order to conveniently and quickly install the faulty car on the placement plate 9, a plurality of mounting holes are opened on the top of the placement plate 9. A dual-axis motor 2 is fixedly installed on the top of the U-shaped bottom plate 1. In order to protect the dual-axis motor 2 and prevent external objects from directly colliding with the dual-axis motor 2, causing damage to the dual-axis motor 2 and affecting the service life of the dual-axis motor 2, a protective cover 27 is fixedly installed on the top of the U-shaped bottom plate 1. The dual-axis motor 2 is located in the protective cover 27. Adjusting screws 3 are respectively fixedly installed on the two output shafts of the dual-axis motor 2, and the two adjusting screws 3 are rotatably connected to the inner wall of the U-shaped bottom plate 1. Two U-shaped adjustment plates 4 are arranged in the shaped bottom plate 1, and through-through openings 15 are respectively provided on the two U-shaped adjustment plates 4. Two adjusting screws 3 respectively penetrate the two through-through openings 15 and are respectively movably connected with the inner walls of the two through-through openings 15. The two adjusting screws 3 are respectively threadedly sleeved with fixing nuts 13, and the two fixing nuts 13 are respectively fixedly connected with the inner walls of the two through-through openings 15. Rotating screws 10 are respectively threadedly installed on the two U-shaped adjustment plates 4. In order to thread the rotating screws 10 on the U-shaped adjustment plates 4, threaded holes are respectively provided on the two U-shaped adjustment plates 4. The two rotating screws 10 respectively penetrate the two threaded holes and are respectively screwed with the inner walls of the two threaded holes, and the two rotating screws 10 respectively penetrate the corresponding The U-shaped adjusting plate 4, the two ends of the two rotating screws 10 are respectively fixedly installed with U-shaped mounting plates 11, and the openings of the two U-shaped mounting plates 11 in the middle face downward, and the openings of the U-shaped mounting plates 11 on both sides face upward, and cleaning brushes 12 are rotatably installed on the four U-shaped mounting plates 11. Since one of the cleaning brushes 12 on the same rotating screw 10 faces upward and does not contact the adjusting screw 3, and the other faces downward and contacts the adjusting screw 3, only one of the two cleaning brushes 12 will always contact the adjusting screw 3. Therefore, when lubricating oil is applied to the adjusting screw 3, the other cleaning brush 12 will not clean the lubricating oil because it does not contact the adjusting screw 3, thereby preventing the lubricating oil from being wasted.

[0029] In order to make the adjusting screw 3 adhere with lubricating oil, reduce the wear of the adjusting screw 3 by the lubricating oil, and improve the service life of the adjusting screw 3, the bottoms of the two U-shaped adjusting plates 4 are respectively provided with mounting grooves, and the two mounting grooves are respectively communicated with the two through-holes 15, and the bottoms of the two U-shaped adjusting plates 4 are respectively provided with mounting cross plates 20, and the two mounting cross plates 20 are respectively provided with rectangular through-holes 21, and the tops of the two mounting cross plates 20 are respectively fixedly installed with lubricating oil tanks 16, and the bottom inner walls of the two lubricating oil tanks 16 are respectively fixedly installed with lubricating oil tanks 16. There are vertical plates 17, and rotating rods 18 are rotatably installed on the two vertical plates 17. In order to rotatably install the rotating rods 18 on the vertical plates 17, rotating holes are respectively opened on the two vertical plates 17, and rotating bearings are respectively fixedly installed in the two rotating holes. The two rotating rods 18 respectively penetrate the two rotating bearings and are respectively fixedly connected to the inner walls of the two rotating bearings. The bearings make the rotating rods 18 rotate more stably on the vertical plates 17, and the two rotating rods 18 respectively penetrate the two vertical plates 17, and the two rotating rods 18 are respectively fixed. Two sponge smear rollers 19 are sleeved, and the four sponge smear rollers 19 are in contact with the adjusting screw 3. The outer walls of the two sides of the two U-shaped adjusting plates 4 are fixedly installed with fixed plates 22, and the four fixed plates 22 are slidably installed with sliding rods 23, and the four sliding rods 23 pass through the corresponding rectangular openings 21, and the bottom ends of the four sliding rods 23 are fixedly installed with rectangular pull plates 26, and the top ends of the four sliding rods 23 are fixedly installed with circular plates 25, and the four sliding rods 23 are movably sleeved with force springs 24. To improve the service life of the force springs 24, the four force springs 24 are all tin-plated springs, and the top ends of the four force springs 24 are fixedly connected to the corresponding circular plates 25, and the bottom ends of the four force springs 24 are fixedly connected to the corresponding fixed plates 22. In the initial state, the force springs 24 are in a compressed state, and the rectangular pull plate 26 is always in close contact with the mounting cross plate 20 through the force springs 24, so that the mounting cross plate 20 is subjected to an upward force, thereby stably mounting the lubricating oil tank 16 on the U-shaped adjustment plate 4.

[0030] In order to block both sides of the through-opening 15 and prevent external dust from entering the through-opening 15 and falling into the lubricating oil tank 16 to contact the lubricating oil, thereby affecting the service life of the lubricating oil, dustproof sponge rings 14 are respectively slidably sleeved on the two adjusting screws 3, and the four dustproof sponge rings 14 are respectively fixedly connected to the two U-shaped adjusting plates 4.

[0031] The working principle of the automobile assembly fault detection and repair display device provided by the present invention is as follows; in the initial state, the force spring 24 is in a compressed state, the cleaning brush 12 and the sponge smear roller 19 are in contact with the adjusting screw 3, and the force spring 24 makes the rectangular pull plate 26 always closely contact with the mounting cross plate 20, so that the mounting cross plate 20 is subjected to an upward force, and then the lubricating oil tank 16 is stably installed on the U-shaped adjustment plate 4. When it is necessary to use this device for automobile detection and fault repair display, first fix the faulty automobile on the placement plate 9, and the worker inspects and displays the faulty automobile on the placement plate 9. When the faulty automobile is adjusted, the worker will inspect and display the faulty automobile on the placement plate 9. When the height of the car allows more people to see the car, start the double-axis motor 2, the double-axis motor 2 rotates to drive the adjusting screw 3 to rotate, the adjusting screw 3 rotates to drive the fixing nut 13 to rotate, the fixing nut 13 rotates to drive the U-shaped adjusting plate 4 to move, the U-shaped adjusting plate 4 moves to drive the moving plate 6 to move, the moving plate 6 moves to drive the bottoms of the four hinged plates 7 to approach each other, and then the tops of the four hinged plates 7 move upward, and finally the connecting plate 8, the placing plate 9 and the faulty car move upward, so that people in the distance can also clearly see the inspection and repair of the faulty car, thereby improving the publicity effect. Since the moving plate 6 is in contact with the load-bearing plate 5, the moving plate 6 and the hinged plate 7, the weight of the connecting plate 8, the placement plate 9 and the faulty car are all borne on the load-bearing plate 5, and the adjusting screw 3 is always in a non-stressed state, so the adjusting screw 3 will not be deformed due to stress, which greatly improves the service life of the adjusting screw 3. At the same time, the adjusting screw 3 rotates to drive the cleaning brush 12 to rotate through the friction force to inspect and clean the dust and impurities adhered to the adjusting screw 3, so as to prevent the dust and impurities from causing the slipping phenomenon between the adjusting screw 3 and the fixing nut 13. At the same time, the adjusting screw 3 rotates to drive the sponge smearing roller 19 through the friction force to continuously apply the lubricating oil in the lubricating oil tank 16 to the adjusting screw 3. The lubricating oil reduces the wear of the adjusting screw 3 and the fixing nut 13, and increases the service life of the adjusting screw 3 and the fixing nut 13. When it is necessary to add lubricating oil to the lubricating oil tank 16, the staff first rotates the sliding rod 23 90° to drive the rectangular pull plate 26 to rotate 90° to pass through the rectangular opening 21, and then drives the rectangular opening 21 through the rectangular opening 21 under the action of the force spring 24. At this time, the installing cross plate 20 changes from an extruded state to a free state. Moving the installing cross plate 20 downward can drive the lubricating oil tank 16 to move downward out of the through opening 15. People can add lubricating oil to the lubricating oil tank 16. The process is simple, fast and efficient.

[0032] Compared with the related art, the automobile assembly fault detection and repair display device provided by the present invention has the following beneficial effects:

[0033] The present invention provides a fault detection and repair display device for automobile assembly. The faulty automobile is first fixed on a placement plate 9. Workers inspect and display the faulty automobile on the placement plate 9. The tops of four hinged plates 7 are moved upward by rotating a dual-axis motor 2, and finally the connecting plate 8, the placement plate 9 and the faulty automobile are moved upward, so that people at a distance can also clearly watch the inspection and repair of the faulty automobile, thereby improving the publicity effect. Since the moving plate 6 is in contact with the load-bearing plate 5, the weight of the moving plate 6, the hinged plate 7, the connecting plate 8, the placement plate 9 and the faulty automobile are all borne on the load-bearing plate 5, and the adjusting screw 3 is always in a non-stressed state. Therefore, the adjusting screw 3 will not be deformed due to stress, thereby greatly improving the service life of the adjusting screw 3. At the same time, the adjusting screw 3 rotates The friction force drives the cleaning brush 12 to rotate to inspect and clean the dust and impurities adhered to the adjusting screw 3. At the same time, the rotation of the adjusting screw 3 drives the sponge smearing roller 19 through the friction force to smear the lubricating oil in the lubricating oil tank 16 onto the adjusting screw 3. The lubricating oil reduces the wear of the adjusting screw 3 and the fixing nut 13, and increases the service life of the adjusting screw 3 and the fixing nut 13. The staff first rotates the sliding rod 23 90° to drive the rectangular pull plate 26 to rotate 90° to pass through the rectangular opening 21, and then drives the rectangular opening 21 through the rectangular opening 21 under the action of the force spring 24, and moves the installation cross plate 20 downward to drive the lubricating oil tank 16 to move downward out of the through opening 15. People can add lubricating oil to the lubricating oil tank 16. The process is simple, fast and efficient.

[0034] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A detection and repair demonstration device for automobile assembly, comprising a load-bearing plate fixedly installed in a U-shaped bottom plate, characterized in that: The bearing plate is provided with two movable plates on the sliding sleeve, and two hinged plates are respectively hingedly installed on the outer walls of one side of the two movable plates, and a connecting plate is hingedly installed on the top of the four hinged plates, and a placing plate is fixedly installed on the top of the connecting plate. A double-axis motor is fixedly installed on the top of the U-shaped bottom plate, and adjusting screws are respectively fixedly installed on the two output shafts of the double-axis motor, and the two adjusting screws are rotatably connected to the inner wall of the U-shaped bottom plate. Two U-shaped adjusting plates are arranged in the U-shaped bottom plate, and through-through openings are respectively opened on the two U-shaped adjusting plates, and the two adjusting screws respectively penetrate the two The screw rods are threaded with fixing nuts, and the fixing nuts are fixedly connected to the inner walls of the two through-through holes respectively. Rotating screws are threadedly installed on the two U-shaped adjustment plates respectively, and the two rotating screws respectively penetrate the corresponding U-shaped adjustment plates. U-shaped mounting plates are fixedly installed at both ends of the two rotating screws respectively, and the openings of the two U-shaped mounting plates in the middle face downward, and the openings of the U-shaped mounting plates on both sides face upward, and cleaning brushes are rotatably installed in the four U-shaped mounting plates respectively.

2. The automobile assembly fault detection and repair display device according to claim 1 is characterized in that: A protective cover is fixedly installed on the top of the U-shaped bottom plate, and the dual-axis motor is located in the protective cover.

3. The automobile assembly fault detection and repair display device according to claim 2, characterized in that: The bottoms of the two U-shaped adjustment plates are respectively provided with mounting grooves, and the two mounting grooves are respectively communicated with the two through openings, the bottoms of the two U-shaped adjustment plates are respectively provided with mounting cross plates, and the two mounting cross plates are respectively provided with rectangular through openings, and the tops of the two mounting cross plates are respectively fixedly installed with lubricating oil tanks, and the bottom inner walls of the two lubricating oil tanks are respectively fixedly installed with vertical plates, and the two vertical plates are respectively rotatably installed with rotating rods, and the two rotating rods respectively penetrate the two vertical plates, and the two rotating rods are respectively fixedly sleeved with two sponge smear rollers, and the four sponge smear rollers are respectively fixedly sleeved with the two rotating rods. The rollers are in contact with the adjusting screws, and fixed plates are fixedly installed on the outer walls of both sides of the two U-shaped adjusting plates, and sliding rods are slidably installed on the four fixed plates, and the four sliding rods respectively penetrate the corresponding rectangular openings, and rectangular pull plates are fixedly installed on the bottom ends of the four sliding rods, and circular plates are fixedly installed on the top ends of the four sliding rods, and force springs are movably sleeved on the four sliding rods, and the top ends of the four force springs are fixedly connected to the corresponding circular plates, and the bottom ends of the four force springs 24 are fixedly connected to the corresponding fixed plates 22.

4. The automobile assembly fault detection and repair display device according to claim 3 is characterized in that: The four force-bearing springs are all tin-plated springs.

5. The automobile assembly fault detection and repair demonstration device according to claim 4, characterized in that: Dustproof sponge rings are slidably sleeved on the two adjusting screws respectively, and the four dustproof sponge rings are fixedly connected to the two U-shaped adjusting plates respectively.

6. The automobile assembly fault detection and repair demonstration device according to claim 5, characterized in that: The two vertical plates are respectively provided with rotation holes, and rotation bearings are respectively fixedly installed in the two rotation holes. The two rotation rods respectively penetrate the two rotation bearings and are respectively fixedly connected to the inner walls of the two rotation bearings.

7. The automobile assembly fault detection and repair demonstration device according to claim 6, characterized in that: The two U-shaped adjustment plates are respectively provided with threaded holes, and the two rotating screws respectively penetrate the two threaded holes and are respectively screwed with the inner walls of the two threaded holes.

8. The automobile assembly fault detection and repair demonstration device according to claim 7, characterized in that: Four universal wheels are fixedly installed at the bottom of the U-shaped bottom plate, and the four universal wheels are distributed in a rectangular array.

9. The automobile assembly fault detection and repair demonstration device according to claim 8, characterized in that: A plurality of mounting holes are provided on the top of the placement plate.

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