Flatness detection device and method for riveted energy storage tray

Abstract

The invention relates to the field of plane detection, in particular to a flatness detection device and method for a riveted energy storage tray, and the device comprises two supports, the front part of the upper end of one support is fixedly provided with a laser transmitter, and the front part of the upper end of the other support is fixedly provided with a light receiving cap. A transverse frame is fixedly installed between the rear portions of the upper ends of the two supports, a moving seat is slidably installed in the middle of the transverse frame, two bearing seats are symmetrically and fixedly installed at the front end of the moving seat, an elastic piece is arranged between the two bearing seats, and a detection rod is installed at the end of the elastic piece. The upper portion of the outer surface of the detection rod is connected with a second marking pen, a first marking pen is arranged above the second marking pen, and the first marking pen is connected with a bearing seat below the first marking pen. According to the flatness detection device, the flatness detection strength is improved, the use requirement is met, and meanwhile the use convenience is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of plane detection, and in particular to a device and method for detecting the flatness of an energy storage tray after riveting. Background Art

[0002] Energy storage tray, also known as energy storage battery tray, is mainly used to carry and protect battery cells. It is made of high-strength materials and can firmly support battery cells to prevent them from shifting or being damaged due to their own weight or external factors. Energy storage tray riveting refers to a technology that uses riveting technology to connect the various components on the tray during the manufacturing process of the energy storage tray.

[0003] After the energy storage tray is riveted, it is often necessary to test the flatness of the bottom surface of the energy storage tray. However, during the testing, the existing testing facilities use a laser transmitter to attach the laser to the bottom surface of the energy storage tray and emit it. At this time, the laser is observed to see whether it is blocked to judge whether the bottom surface is flat. This detection method can only detect whether it is flat, but cannot detect the deformation size of the uneven position, resulting in insufficient detection strength and difficulty in meeting the use requirements. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a flatness detection device and method for an energy storage pallet after riveting.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a flatness detection device for an energy storage pallet after riveting, comprising two brackets, wherein a laser emitter is fixedly installed on the front upper end of one of the brackets, and a light receiving cap is fixedly installed on the front upper end of the other bracket, a cross frame is fixedly installed between the upper rear ends of the two brackets, a movable seat is slidably installed in the middle of the cross frame, and two bearing seats are symmetrically fixedly installed at the front end of the movable seat, an elastic member is arranged between the two bearing seats, a detection rod is installed at the end of the elastic member, a No. 2 marker is connected to the upper part of the outer surface of the detection rod, a No. 1 marker is arranged above the No. 2 marker, and the No. 1 marker is connected to the lower bearing seat, a whiteboard is fitted on the No. 2 marker and the No. 1 marker, the whiteboard is fixed to the cross frame, an erasing member is installed on the upper end of the upper bearing seat, and the erasing member is fitted on the whiteboard.

[0006] Preferably, a connecting frame is fitted on the outer surface of the No. 2 marker pen, and the end of the connecting frame is fixed to the detection rod. A fixing frame is fitted on the outer surface of the No. 1 marker pen, and the end of the fixing frame is fixed to the supporting seat below. Bolts are penetrated and tightened on the side surfaces of the connecting frame and the fixing frame, and the two bolts are respectively tightened on the No. 1 marker pen and the No. 2 marker pen.

[0007] Preferably, the elastic member includes two guide rods symmetrically fixedly installed between two bearing seats, a clamping seat is fitted on the outer surfaces of the two guide rods, an extension frame is fixedly installed in the middle of the clamping seat, the end of the extension frame is fixed to the detection rod, a compression spring is wound around the outer side of the guide rod, one end of the compression spring is fixed to the upper end of the compression seat, and the other end of the compression spring is fixed to the upper bearing seat.

[0008] Preferably, a No. 1 guide rail is fixedly mounted on the upper end of the cross frame, and the movable seat is attached to the outer surface of the No. 1 guide rail. A No. 2 guide rail is fixedly mounted on the front end of the cross frame, and the movable seat is attached to the outer surface of the No. 2 guide rail.

[0009] Preferably, the erasing member includes an axle seat fixedly mounted on the upper end of the supporting seat above, a transmission shaft is rotatably mounted inside the axle seat, a top ear extends from the front end of the transmission shaft, a push plate frame is rotatably mounted on the end of the top ear, a sliding sleeve is rotatably mounted on the lower end of the push plate frame, the sliding sleeve is fitted to the outer surface of the fixed frame, an eraser is provided at the rear end of the sliding sleeve, and the eraser is fitted to the whiteboard.

[0010] Preferably, a slot is provided on the side of the sliding sleeve, a connecting ear extends from the front end of the eraser, the connecting ear fits inside the slot, a screw passes through the side of the connecting ear and the inner side of the slot and is tightened, a drive shaft is rotatably mounted on the rear part of the upper end of the movable seat, the drive shaft extends from the lower end of the movable seat, the upper end of the drive shaft and the rear end of the transmission shaft are coaxially inlaid with bevel gears, and the two bevel gears are meshed with each other.

[0011] Preferably, a servo motor is fixedly installed at the rear portion of the lower end of the movable seat, the output end of the servo motor is fixed to the driving shaft, a connecting shaft is arranged on the side of the driving shaft, the connecting shaft penetrates and is rotatably installed on the movable seat, a propulsion gear is coaxially inlaid on the outer surface of the connecting shaft, a tooth plate is meshed at the front of the propulsion gear, the tooth plate is fixed to the cross frame, a large pulley is coaxially inlaid on the upper end of the connecting shaft, a small pulley is coaxially inlaid on the outer surface of the driving shaft, and a belt is connected between the small pulley and the large pulley.

[0012] A method for using a device for detecting the flatness of an energy storage tray after riveting is also provided, comprising the following steps: S1: Use the laser transmitter to attach the laser to the bottom surface of the energy storage tray and emit it. Then observe whether the laser is received by the light receiving cap to determine whether the laser is blocked; S2: At the same time, the servo motor drives the moving seat to move, and the moving seat drives the detection rod to move. During this process, the compression spring presses the detection rod, so that the detection rod moves close to the bottom surface of the energy storage tray. At this time, the No. 2 marker moves synchronously with the detection rod to draw the bottom curve of the energy storage tray on the whiteboard; S3: The moving base also drives the No. 1 marker to move to draw a horizontal straight line on the whiteboard. Then, the horizontal straight line is used as a reference to view the line segment drawn by the No. 2 marker to determine the deformation size of the uneven position of the bottom surface of the energy storage tray.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the rotating driving shaft, the propulsion gear on the connecting shaft can be driven by the belt to roll on the toothed plate, so that the moving seat can slide on the No. 1 guide rail and the No. 2 guide rail, and the moving moving seat drives the detection rod to move. During this process, the compression spring will press the detection rod, so that the detection rod moves close to the bottom surface of the energy storage tray. At this time, the No. 2 marker moves synchronously with the detection rod to draw the deformation curve of the bottom surface of the energy storage tray on the whiteboard. At the same time, the moving moving seat also drives the No. 1 marker to move to draw a horizontal straight line on the whiteboard. Then, the horizontal straight line is used as a reference to view the line segment drawn by the No. 2 marker to determine the deformation size of the uneven position of the bottom surface of the energy storage tray, thereby increasing the intensity of flatness detection to meet its use requirements.

[0014] 2. At the same time, the rotating drive shaft will also drive the top ear on the transmission shaft to rotate through the bevel gear, and then drive the push plate frame to move to push the eraser back and forth. At this time, the sliding sleeve slides on the fixed frame to guide the eraser, so that when the movable seat moves in the reverse direction and resets, the eraser can automatically erase the line segment drawn on the whiteboard through the continuous up and down reciprocating movement of the eraser to wait for the next inspection and use. The process does not require workers to manually erase, thereby effectively ensuring ease of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a device for detecting the flatness of an energy storage pallet after riveting according to the present invention; Figure 2 It is a schematic diagram of a moving seat of a device for detecting flatness of an energy storage tray after riveting according to the present invention; Figure 3 It is a schematic diagram of another viewing angle of a moving seat of a flatness detection device for an energy storage pallet after riveting according to the present invention; Figure 4 It is a schematic diagram of a No. 1 marker pen of a flatness detection device for an energy storage tray after riveting according to the present invention; Figure 5 A device for detecting the flatness of an energy storage tray after riveting. Figure 2 A magnified view of middle; Figure 6 A device for detecting the flatness of an energy storage tray after riveting. Figure 3 Enlarged view of B.

[0016] In the figure: 1. horizontal frame; 2. laser transmitter; 3. light receiving cap; 4. bracket; 5. whiteboard; 6. moving seat; 7. extension frame; 8. detection rod; 9. clamping seat; 10. guide rod; 11. clamping spring; 12. bearing seat; 13. shaft seat; 14. transmission shaft; 15. bevel gear; 16. driving shaft; 17. tooth plate; 18. push plate frame; 19. guide rail No. 1; 20. belt; 21. marker pen No. 1; 22. marker pen No. 2; 23. connecting frame; 24. fixing frame; 25. bolt; 26. guide rail No. 2; 27. connecting shaft; 28. propulsion gear; 29. ​​servo motor; 30. small pulley; 31. large pulley; 32. eraser; 33. top ear; 34. sliding sleeve; 35. connecting ear; 36. screw; 37. slot. DETAILED DESCRIPTION

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0018] like Figure 1-Figure 6 The flatness detection device of an energy storage tray after riveting shown in the figure comprises two brackets 4, wherein a laser emitter 2 is fixedly mounted on the front upper end of one of the brackets 4, and the laser emitter 2 can emit laser by attaching it to the bottom surface of the energy storage tray, and a light receiving cap 3 is fixedly mounted on the front upper end of the other bracket 4, and the light receiving cap 3 serves to receive the laser, and a cross frame 1 is fixedly mounted between the upper rear ends of the two brackets 4, and a movable seat 6 is slidably mounted in the middle of the cross frame 1, and the cross frame 1 serves to support the movable seat 6, and two bearing seats 12 are symmetrically fixedly mounted on the front end of the movable seat 6, and an elastic member is arranged between the two bearing seats 12, and a detection rod is installed at the end of the elastic member 8. A ball bearing can be installed at the end of the detection rod 8 to reduce the friction when moving on the bottom surface of the energy storage tray. A No. 2 marker pen 22 is connected to the upper part of the outer surface of the detection rod 8. A No. 1 marker pen 21 is arranged above the No. 2 marker pen 22. The No. 2 marker pen 22 can move synchronously with the detection rod 8 to draw the bottom curve of the energy storage tray on the whiteboard 5. The No. 1 marker pen 21 is connected to the supporting seat 12 below. The No. 2 marker pen 22 and the No. 1 marker pen 21 are fitted with a whiteboard 5. The No. 1 marker pen 21 can draw a horizontal straight line for reference. The whiteboard 5 is fixed to the horizontal frame 1. An eraser is installed on the upper end of the upper supporting seat 12, and the eraser is fitted on the whiteboard 5.

[0019] A connecting frame 23 is fitted on the outer surface of the No. 2 marker 22, and the end of the connecting frame 23 is fixed to the detection rod 8, and the connecting frame 23 plays a role in supporting the No. 2 marker 22. A fixing frame 24 is fitted on the outer surface of the No. 1 marker 21, and the end of the fixing frame 24 is fixed to the supporting seat 12 below, and the fixing frame 24 plays a role in supporting the No. 1 marker 21. Bolts 25 are penetrated and tightened on the side surfaces of the connecting frame 23 and the fixing frame 24. The two bolts 25 are respectively tightened on the No. 1 marker 21 and the No. 2 marker 22. By loosening the bolts 25, the No. 1 marker 21 and the No. 2 marker 22 can be taken out for replacement.

[0020] The elastic member includes two guide rods 10 symmetrically fixedly installed between two bearing seats 12. A clamping seat 9 is fitted on the outer surfaces of the two guide rods 10. The guide rods 10 guide the clamping seat 9. An extension frame 7 is fixedly installed in the middle of the clamping seat 9. The end of the extension frame 7 is fixed to the detection rod 8. The extension frame 7 supports the detection rod 8. A compression spring 11 is wound around the outer side of the guide rod 10. The compression spring 11 can press the detection rod 8 against the bottom surface of the energy storage tray so that the detection rod 8 can move along the ups and downs of the bottom surface of the energy storage tray. One end of the compression spring 11 is fixed to the upper end of the clamping seat 9, and the other end of the compression spring 11 is fixed to the upper bearing seat 12.

[0021] A No. 1 guide rail 19 is fixedly installed on the upper end of the cross frame 1, and the movable seat 6 is attached to the outer surface of the No. 1 guide rail 19. A No. 2 guide rail 26 is fixedly installed on the front end of the cross frame 1. The No. 1 guide rail 19 and the No. 2 guide rail 26 serve to linearly guide the movable seat 6, and the movable seat 6 is attached to the outer surface of the No. 2 guide rail 26.

[0022] The erasing member includes an axle seat 13 fixedly mounted on the upper end of the supporting seat 12 above, and a transmission shaft 14 is rotatably mounted inside the axle seat 13, and the axle seat 13 plays a role in supporting the transmission shaft 14, and a top ear 33 is extended from the front end of the transmission shaft 14, and the transmission shaft 14 plays a role in driving the top ear 33 to rotate, and a push plate frame 18 is rotatably mounted on the end of the top ear 33, and the top ear 33 plays a role in driving the push plate frame 18 to move, and a sliding sleeve 34 is rotatably mounted on the lower end of the push plate frame 18, and the sliding sleeve 34 is attached to the outer surface of the fixed frame 24, and a blackboard eraser 32 is arranged at the rear end of the sliding sleeve 34, and the sliding sleeve 34 plays a role in guiding the blackboard eraser 32, and the blackboard eraser 32 is attached to the whiteboard 5, and the push plate frame 18 can drive the blackboard eraser 32 to continuously reciprocate up and down to fully erase the line segments on the whiteboard 5.

[0023] A slot 37 is provided on the side of the sliding sleeve 34, and a connecting ear 35 extends from the front end of the eraser 32. The slot 37 plays a role of engaging with the connecting ear 35, and the connecting ear 35 fits inside the slot 37. The connecting ear 35 plays a role of facilitating the connection of the eraser 32. A screw 36 is passed through and tightened between the side of the connecting ear 35 and the inner side of the slot 37. By loosening the screw 36, the connecting ear 35 can be taken out of the slot 37, so that the eraser 32 can be disassembled for cleaning. The drive shaft 16 is rotatably installed at the rear part of the upper end of the movable seat 6, and the drive shaft 16 extends from the lower end of the movable seat 6. The upper end of the drive shaft 16 and the rear end of the transmission shaft 14 are coaxially inlaid with a bevel gear 15, and the bevel gear 15 plays a role of connecting the drive shaft 16 and the transmission shaft 14 together, and the two bevel gears 15 are meshed.

[0024] A servo motor 29 is fixedly installed at the rear part of the lower end of the moving seat 6, and the output end of the servo motor 29 is fixed to the driving shaft 16. The servo motor 29 plays a role in driving the driving shaft 16 to rotate. A connecting shaft 27 is arranged on the side of the driving shaft 16. The connecting shaft 27 plays a role in carrying the propulsion gear 28. The connecting shaft 27 penetrates and is rotatably installed on the moving seat 6. The outer surface of the connecting shaft 27 is coaxially inlaid with the propulsion gear 28. The front part of the propulsion gear 28 is meshed with a toothed plate 17. The propulsion gear 28 can roll on the toothed plate 17 to drive the moving seat 6 to move. The toothed plate 17 is fixed to the cross frame 1. The upper end of the connecting shaft 27 is coaxially inlaid with a large pulley 31, and the outer surface of the driving shaft 16 is coaxially inlaid with a small pulley 30. The small pulley 30 and the large pulley 31 play a role of deceleration. A belt 20 is connected between the small pulley 30 and the large pulley 31, and the belt 20 plays a role of transmission.

[0025] A method for using a device for detecting the flatness of an energy storage tray after riveting is also provided, comprising the following steps: S1: Use the laser transmitter 2 to attach the laser to the bottom surface of the energy storage tray and emit it. At this time, check whether the laser is received by the light receiving cap 3 to determine whether the laser is blocked; S2: At the same time, the servo motor 29 works to drive the moving seat 6 to move, so that the moving seat 6 drives the detection rod 8 to move. During this process, the compression spring 11 presses the detection rod 8, so that the detection rod 8 moves close to the bottom surface of the energy storage tray. At this time, the No. 2 marker pen 22 moves synchronously with the detection rod 8 to draw the bottom curve of the energy storage tray on the whiteboard 5; S3: The moving seat 6 also moves the No. 1 marker 21 to draw a horizontal straight line on the whiteboard 5, and then the line segment drawn by the No. 2 marker 22 is viewed with the horizontal straight line as a reference to determine the deformation size of the uneven position of the bottom surface of the energy storage tray.

[0026] During the inspection, the riveted energy storage tray is pushed between the two brackets 4. At this time, the bottom surface of the energy storage tray is flush with the laser emitter 2. Then the laser emitter 2 works to attach the laser to the bottom surface of the energy storage tray and emit it. At this time, check whether the laser is received on the light receiving cap 3. If the laser is not received, it means that the laser is blocked by the bottom surface of the energy storage tray, that is, the bottom surface of the energy storage tray is uneven. At this time, the servo motor 29 works to drive the drive shaft 16 to rotate, so that the drive shaft 16 can drive the propulsion gear 28 on the connecting shaft 27 to roll on the toothed plate 17 through the belt 20, so that the moving seat 6 can slide on the No. 1 guide rail 19 and the No. 2 guide rail 26, so that the moving seat 6 drives the detection rod 8 to move. In this process, the compression spring 11 will press the detection rod 8, so that the detection rod 8 moves close to the bottom surface of the energy storage tray. At this time, the No. 2 marker pen 22 follows the detection rod 8 The moving seat 6 also drives the No. 1 marker 21 to move to draw a horizontal straight line on the whiteboard 5. Then, the horizontal straight line is used as a reference to view the line segment drawn by the No. 2 marker 22 to determine the deformation size of the uneven position of the bottom surface of the energy storage tray. After the detection is completed, the servo motor 29 drives the drive shaft 16 to rotate in the opposite direction so that the moved moving seat 6 can be reset. During this process, the drive shaft 16 will drive the top ear 33 on the transmission shaft 14 to rotate through the bevel gear 15, thereby driving the push plate frame 18 to move to push the eraser 32 back and forth. At this time, the sliding sleeve 34 slides on the fixed frame 24 to guide the eraser 32, so that when the moving seat 6 moves in the opposite direction and resets, it can erase the line segment drawn on the whiteboard 5 by itself through the eraser 32 that continuously reciprocates up and down, so as to wait for the next detection and use.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for detecting the flatness of an energy storage tray after riveting, comprising two brackets (4), wherein a laser emitter (2) is fixedly mounted on the front upper end of one of the brackets (4), and a light receiving cap (3) is fixedly mounted on the front upper end of the other bracket (4), characterized in that: A cross frame (1) is fixedly installed between the upper rear parts of the two brackets (4), a movable seat (6) is slidably installed in the middle part of the cross frame (1), two bearing seats (12) are symmetrically fixedly installed at the front end of the movable seat (6), an elastic member is arranged between the two bearing seats (12), a detection rod (8) is installed at the end of the elastic member, a No. 2 marker (22) is connected to the upper part of the outer surface of the detection rod (8), a No. 1 marker (21) is arranged above the No. 2 marker (22), the No. 1 marker (21) is connected to the lower bearing seat (12), a whiteboard (5) is attached to the No. 2 marker (22) and the No. 1 marker (21), the whiteboard (5) is fixed to the cross frame (1), an erasing member is installed at the upper end of the upper bearing seat (12), and the erasing member is attached to the whiteboard (5).

2. According to claim 1, a flatness detection device for an energy storage tray after riveting, characterized in that: A connecting frame (23) is fitted on the outer surface of the No. 2 marker (22), and the end of the connecting frame (23) is fixed to the detection rod (8). A fixing frame (24) is fitted on the outer surface of the No. 1 marker (21), and the end of the fixing frame (24) is fixed to the supporting seat (12) below. Bolts (25) are penetrated and tightened on the side surfaces of the connecting frame (23) and the fixing frame (24), and the two bolts (25) are respectively tightened on the No. 1 marker (21) and the No. 2 marker (22).

3. The flatness detection device for an energy storage tray after riveting according to claim 2 is characterized in that: The elastic member comprises two guide rods (10) symmetrically fixedly mounted between two bearing seats (12); a clamping seat (9) is fittedly mounted on the outer surfaces of the two guide rods (10); a protruding frame (7) is fixedly mounted in the middle of the clamping seat (9); an end of the protruding frame (7) is fixed to the detection rod (8); a clamping spring (11) is wound around the outer side of the guide rod (10); one end of the clamping spring (11) is fixed to the upper end of the clamping seat (9); and the other end of the clamping spring (11) is fixed to the upper bearing seat (12).

4. The flatness detection device for an energy storage tray after riveting according to claim 3 is characterized in that: A first guide rail (19) is fixedly mounted on the upper end of the cross frame (1), and the movable seat (6) is in contact with the outer surface of the first guide rail (19). A second guide rail (26) is fixedly mounted on the front end of the cross frame (1), and the movable seat (6) is in contact with the outer surface of the second guide rail (26).

5. The device for detecting the flatness of an energy storage tray after riveting according to claim 4 is characterized in that: The erasing member comprises an axle seat (13) fixedly mounted on the upper end of a bearing seat (12) above, a transmission shaft (14) rotatably mounted inside the axle seat (13), a top ear (33) extending from the front end of the transmission shaft (14), a push plate frame (18) rotatably mounted on the end of the top ear (33), a sliding sleeve (34) rotatably mounted on the lower end of the push plate frame (18), the sliding sleeve (34) being fitted to the outer surface of the fixed frame (24), a blackboard eraser (32) being provided at the rear end of the sliding sleeve (34), the blackboard eraser (32) being fitted to the whiteboard (5).

6. The device for detecting the flatness of an energy storage tray after riveting according to claim 5 is characterized in that: A slot (37) is provided on the side of the sliding sleeve (34), and a connecting ear (35) extends from the front end of the eraser (32), and the connecting ear (35) is fitted into the inside of the slot (37). A screw (36) is passed through and tightened between the side of the connecting ear (35) and the inner side of the slot (37). A drive shaft (16) is rotatably mounted on the rear part of the upper end of the movable seat (6), and the drive shaft (16) extends from the lower end of the movable seat (6). The upper end of the drive shaft (16) and the rear end of the transmission shaft (14) are coaxially inlaid with a bevel gear (15), and the two bevel gears (15) are meshed with each other.

7. The device for detecting the flatness of an energy storage tray after riveting according to claim 6 is characterized in that: A servo motor (29) is fixedly mounted at the rear of the lower end of the movable seat (6); an output end of the servo motor (29) is fixed to the drive shaft (16); a connecting shaft (27) is arranged on the side of the drive shaft (16); the connecting shaft (27) penetrates and is rotatably mounted on the movable seat (6); a propulsion gear (28) is coaxially inlaid on the outer surface of the connecting shaft (27); a toothed plate (17) is meshed at the front of the propulsion gear (28); the toothed plate (17) is fixed to the cross frame (1); a large pulley (31) is coaxially inlaid on the upper end of the connecting shaft (27); a small pulley (30) is coaxially inlaid on the outer surface of the drive shaft (16); a belt (20) is connected between the small pulley (30) and the large pulley (31).

8. A method for using a device for detecting the flatness of an energy storage tray after riveting, used in the device for detecting the flatness of an energy storage tray after riveting as claimed in claim 7, characterized in that: The following steps are involved: S1: Use the laser transmitter (2) to attach the laser to the bottom surface of the energy storage tray and emit it. At this time, check whether the laser is received by the light receiving cap (3) to determine whether the laser is blocked; S2: At the same time, the servo motor (29) drives the moving seat (6) to move, so that the moving seat (6) drives the detection rod (8) to move. During this process, the compression spring (11) presses the detection rod (8), so that the detection rod (8) moves close to the bottom surface of the energy storage tray. At this time, the No. 2 marker pen (22) moves synchronously with the detection rod (8) to draw the bottom curve of the energy storage tray on the whiteboard (5); S3: The moving seat (6) also moves the No. 1 marker (21) to draw a horizontal straight line on the whiteboard (5). The horizontal straight line is then used as a reference to view the line segment drawn by the No. 2 marker (22) to determine the deformation size of the uneven position of the bottom surface of the energy storage tray.

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