New energy automobile battery withstand voltage detection robot

Abstract

The invention discloses a new energy automobile battery voltage withstanding detection robot, and belongs to the technical field of automobile battery detection.The new energy automobile battery voltage withstanding detection robot comprises a workbench, and four sealing boxes are arranged on the periphery of the outer side of the top of the workbench; a robot base is fixedly arranged at the position, on the middle sides of the four sealing boxes, of the top of the workbench, a first mechanical arm is rotationally arranged on one side of the top of the workbench, a second mechanical arm is rotationally arranged on one side of the top of the first mechanical arm, and a third mechanical arm is rotationally arranged on one side of the top of the second mechanical arm. By arranging the sealing box, the robot base and the sealing cover, during use, a battery pack is manually placed in the sealing box to be automatically fixed, then the robot base controls the mechanical arm structure on the robot base to drive the sealing cover to move to the top of the sealing box to seal the sealing box, and meanwhile power supply detection is conducted on the battery pack; therefore, the robot replaces manual work, and high efficiency and safety are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile battery testing, and more particularly to a new energy automobile battery withstand voltage testing robot. Background Art

[0002] With growing environmental awareness and restrictions on exhaust emissions from traditional fuel vehicles, the new energy vehicle industry is developing rapidly. As a core component of new energy vehicles, the performance and safety of power batteries are crucial. Pressure resistance is a key indicator of battery safety and reliability, directly impacting the electrical safety of the vehicle during operation. Therefore, efficient and accurate testing methods are required to ensure the battery's pressure resistance.

[0003] The most common testing method is manual testing. When manually testing battery withstand voltage, the battery needs to be operated one by one, which is slow and difficult to meet the needs of large-scale production. Moreover, long-term repetitive work can easily lead to fatigue of the tester, thus affecting the accuracy and consistency of the test results. In addition, manual testing may be affected by subjective factors, such as the difference in the tester's operating proficiency and judgment criteria. In addition, the withstand voltage test needs to be conducted in a high-voltage environment. Manual operation has certain safety risks and may cause harm to the tester. Therefore, in order to solve the above problems, the existence of a new energy vehicle battery withstand voltage testing robot is crucial. Summary of the Invention

[0004] The purpose of the present invention is to provide a new energy vehicle battery withstand voltage testing robot to solve the problems raised in the above background technology.

[0005] A new energy vehicle battery withstand voltage testing robot comprises a workbench, four sealed boxes are arranged on the outer circumference of the top of the workbench, a robot base is fixedly arranged on the middle side of the four sealed boxes on the top of the workbench, a first mechanical arm is rotatably arranged on one side of the top of the workbench, a second mechanical arm is rotatably arranged on one side of the top of the first mechanical arm, a third mechanical arm is rotatably arranged on one side of the top of the second mechanical arm, a fourth mechanical arm is rotatably arranged on one side of the top of the third mechanical arm, a fifth mechanical arm is rotatably arranged on one side of the top of the fourth mechanical arm, a sixth mechanical arm is rotatably arranged on one side of the top of the fifth mechanical arm, a mounting seat is rotatably arranged on one side of the bottom of the sixth mechanical arm, a telescopic rod is fixedly arranged on the bottom of the mounting seat, and a connecting plate is telescopically connected to the mounting seat via the telescopic rod, and a sealing cover is fixedly arranged on the bottom of the connecting plate;

[0006] The bottom of the sealing cover fits tightly against the top of one of the sealing boxes and seals the sealing box. The battery pack is fixedly clamped inside the sealing box. Two power-on slots are fixedly provided on the top of the battery pack. Two power-on heads are fixedly provided on the bottom of the sealing cover. The two power-on heads respectively cooperate with the two power-on slots. A fixing platform is fixed inside the sealing box. Four clamping blocks are slidingly provided on the top of the fixing platform. The four clamping blocks all fit tightly against the outside of the battery pack to clamp it.

[0007] Preferably, a placement platform is telescopically provided on the top of the fixed platform at the bottom of the battery pack, the top of the placement platform is tightly fitted with the bottom of the battery pack, the bottom of the placement platform is telescopically connected with a sleeve, four rotation grooves are opened on the outer circumference of the sleeve, and a second pull rod is rotatably provided on the inner side of the four rotation grooves, and one side of the four second pull rods is telescopically connected to the first pull rod, and the four first pull rods are respectively rotatably connected to the bottom of the four clamping blocks.

[0008] Preferably, an extrusion rod is telescopically provided at the bottom of the sealing cover, a first spring is fixedly provided on the top of the extrusion rod, the top of the first spring is fixedly connected to the sealing cover, a first sealing plate is fixedly provided at the bottom of the extrusion rod, four support rods are fixedly provided on the outside of the battery pack inside the sealing box, a second sealing plate is fixedly provided on the top of the four support rods, and the top of the second sealing plate is tightly fitted with the bottom of the first sealing plate.

[0009] Preferably, a through groove is provided inside the sealing cover above the battery pack, a piston is slidably provided inside the through groove, the outer side of the piston is tightly fitted with the inner wall of the through groove, a second spring is fixedly provided on the top of the piston, the top end of the second spring is fixedly connected to the sealing cover, and a distance sensor is fixedly provided inside the sealing cover above the piston.

[0010] Preferably, there are card slots on both sides of the interior of the sleeve, and card blocks are fixedly provided on both sides of the guide rod. The two card blocks are respectively slidably provided in the two card slots, and the extension and retraction of the sleeve are limited by the card blocks. A fourth spring is fixedly provided at the bottom of the guide rod, and the fourth spring is telescopically provided on the inside of the sleeve.

[0011] Preferably, the four second pull rods are fixed with a connecting rod at the end away from the sleeve, the four connecting rods are respectively slidably connected to the inner sides of the four first pull rods, and the outer sides of the four connecting rods are movably sleeved with a third spring, and the four third springs are respectively telescopically arranged on the inner sides of the four first pull rods.

[0012] Preferably, four slide grooves are fixedly provided on the outside of the fixed table, and the four clamping blocks are respectively slidably provided on the inner sides of the four slide grooves, and mounting plates are fixedly provided on both sides of the four clamping blocks inside the four slide grooves, and multiple sliding rods are telescopically provided inside the multiple mounting plates, and multiple sliding rods are rotatably provided with rollers near one end of the clamping block, and one side of the multiple rollers is tightly fitted with the four clamping blocks respectively, and multiple sliding rods are fixed with sliding plates at one end away from the clamping block, and multiple sliding plates are fixed with multiple fifth springs on the side away from the mounting plate, and are telescopically extended and retracted on both sides of the slide groove by multiple fifth springs.

[0013] Preferably, a first rubber pad is fixedly provided at the bottom of the first sealing plate, and a second rubber pad is fixedly provided at the top of the second sealing plate. The bottom of the first rubber pad fits tightly with the top of the second rubber pad. Four sliding rods are fixedly provided on one side of the connecting plate, and the outer sides of the four sliding rods are all slidably connected to the mounting seat.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] By setting up a sealing box, a robot base and a sealing cover, the battery pack is manually placed inside the sealing box for automatic fixation during use. The robot base then controls the mechanical arm structure above to drive the sealing cover to move to the top of the sealing box to seal it, and at the same time performs power supply detection on the battery pack, thereby enabling the robot to replace manual labor, which is not only efficient but also safe.

[0016] By arranging a placement table and a clamping block inside the sealed box, when the battery pack is placed, the weight of the battery pack itself is used to squeeze the placement table to drive the clamping block to clamp the battery pack, thereby realizing automatic clamping of the battery pack and positioning the battery pack while clamping, further facilitating manual operation and making detection more efficient. By arranging a first sealing plate and a second sealing plate, the first sealing plate and the second sealing plate are tightly fitted together during use, so that the space where the battery pack is located is sealed, effectively avoiding the possibility of combustion when the battery pack fails. At the same time, by arranging a through groove and a piston, when the battery pack fails during detection, gas will be generated, which will squeeze the piston inside the through groove to move in a sealed environment, and is detected by a distance sensor, thereby quickly detecting the occurrence of the fault.

[0017] By providing a card slot and a guide rod, the movement of the sleeve is limited during use, which effectively improves the stability of the structure. At the same time, by providing a fourth spring, a connecting rod and a third spring, during use, the fourth spring and the third spring are squeezed by the movement of the placement table and the connecting rod, thereby improving the stability of the clamping. By providing a roller and a sliding rod, during use, the fifth spring is squeezed by the extension and contraction of the sliding rod so that the roller and the clamping block fit tightly, effectively improving the stability of the clamping block during movement, thereby making the clamping of the battery pack more stable. By providing a first rubber pad and a second rubber pad, the sealing is effectively improved by the close fit of the first rubber pad and the second rubber pad, and the sealing stability is effectively improved by providing a sliding rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the connection structure between the sealing cover and the sealing box of the present invention;

[0020] Figure 3 It is a cross-sectional schematic diagram of the connection structure between the sealing cover and the sealing box of the present invention;

[0021] Figure 4 for Figure 3 A schematic diagram of the structure at center A;

[0022] Figure 5 It is a schematic diagram of the support rod structure of the present invention;

[0023] Figure 6 It is a schematic structural diagram of the energizing head of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the extrusion rod of the present invention;

[0025] Figure 8 This is a schematic diagram of the chute structure of the present invention;

[0026] Figure 9 This is a schematic structural diagram of the second rubber pad of the present invention;

[0027] Figure 10 It is a schematic diagram of the clamping block structure of the present invention;

[0028] Figure 11 is a schematic diagram of a fourth spring structure of the present invention;

[0029] Figure 12 It is a schematic cross-sectional view of the chute structure of the present invention;

[0030] Figure 13 It is a schematic diagram of the sliding plate structure of the present invention.

[0031] Explanation of the numbers in the figure: 1. Workbench; 10. Robot base; 11. First robot arm; 12. Second robot arm; 13. Third robot arm; 14. Fourth robot arm; 15. Fifth robot arm; 16. Sixth robot arm; 17. Mounting base; 18. Telescopic rod; 19. Connecting plate; 101. Sliding rod; 2. Sealing cover; 20. Power supply head; 21. First sealing plate; 22. Extrusion rod; 23. First spring; 24. Through groove; 25. Piston; 26. Second spring; 27. Distance sensor; 28. First Rubber pad; 3. Sealing box; 30. Fixed platform; 31. Second sealing plate; 32. Support rod; 33. Slide groove; 34. Clamping block; 35. Second rubber pad; 36. First pull rod; 37. Second pull rod; 38. Connecting rod; 39. Third spring; 4. Battery pack; 40. Power supply slot; 41. Placement platform; 42. Guide rod; 43. Fourth spring; 44. Sleeve; 45. Block; 46. Slot; 47. Rotating groove; 5. Roller; 50. Slide rod; 51. Mounting plate; 52. Sliding plate; 53. Fifth spring. DETAILED DESCRIPTION

[0032] Example: See Figures 1-13 A new energy vehicle battery withstand voltage testing robot includes a workbench 1, four sealed boxes 3 are arranged on the outer circumference of the top of the workbench 1, a robot base 10 is fixedly arranged on the middle side of the four sealed boxes 3 on the top of the workbench 1, a first robotic arm 11 is rotatably arranged on one side of the top of the workbench 1, a second robotic arm 12 is rotatably arranged on one side of the top of the first robotic arm 11, a third robotic arm 13 is rotatably arranged on one side of the top of the second robotic arm 12, a fourth robotic arm 14 is rotatably arranged on one side of the top of the third robotic arm 13, a fifth robotic arm 15 is rotatably arranged on one side of the top of the fourth robotic arm 14, a sixth robotic arm 16 is rotatably arranged on one side of the top of the fifth robotic arm 15, a mounting seat 17 is rotatably arranged on one side of the bottom of the sixth robotic arm 16, a telescopic rod 18 is fixedly arranged on the bottom of the mounting seat 17, and a connecting plate 19 is telescopically connected to the telescopic rod 18, and a sealing cover 2 is fixedly arranged on the bottom of the connecting plate 19;

[0033] The bottom of the sealing cover 2 fits tightly against the top of one of the sealing boxes 3 and seals the sealing box 3. The battery pack 4 is fixedly clamped inside the sealing box 3. Two power supply slots 40 are fixedly provided on the top of the battery pack 4. Two power supply heads 20 are fixedly provided on the bottom of the sealing cover 2. The two power supply heads 20 respectively match the two power supply slots 40. A fixing platform 30 is fixedly provided inside the sealing box 3. Four clamping blocks 34 are slidably provided on the top of the fixing platform 30. The four clamping blocks 34 all fit tightly against the outside of the battery pack 4 to clamp it.

[0034] By setting up a sealing box 3, a robot base 10 and a sealing cover 2, when in use, the battery pack 4 is manually placed inside the sealing box 3 for automatic fixation. Then the robot base 10 controls the mechanical arm structure above to drive the sealing cover 2 to move to the top of the sealing box 3 to seal it, and at the same time, the power supply of the battery pack 4 is tested, thereby realizing the robot replacing manual labor, which is not only efficient but also safe.

[0035] Specifically, a placement platform 41 is telescopically provided on the top of the fixing platform 30 at the bottom of the battery pack 4. The top of the placement platform 41 fits tightly against the bottom of the battery pack 4. A sleeve 44 is telescopically connected to the bottom of the placement platform 41. Four rotation grooves 47 are provided on the outer circumference of the sleeve 44. Second pull rods 37 are rotatably provided inside the four rotation grooves 47. One side of each of the four second pull rods 37 is telescopically connected to a first pull rod 36. The four first pull rods 36 are rotatably connected to the bottom of the four clamping blocks 34 respectively.

[0036] By arranging a placement table 41 and a clamping block 34 inside the sealed box 3, when the battery pack 4 is placed, the weight of the battery pack 4 is used to squeeze the placement table 41 to drive the clamping block 34 to clamp the battery pack 4, thereby realizing automatic clamping of the battery pack 4 and positioning the battery pack 4 while clamping, further facilitating manual operation and making detection efficiency higher.

[0037] Specifically, an extrusion rod 22 is telescopically provided at the bottom of the sealing cover 2, a first spring 23 is fixedly provided on the top of the extrusion rod 22, the top of the first spring 23 is fixedly connected to the sealing cover 2, a first sealing plate 21 is fixedly provided at the bottom of the extrusion rod 22, four support rods 32 are fixedly provided inside the sealing box 3 on the outside of the battery pack 4, a second sealing plate 31 is fixedly provided on the top of the four support rods 32, and the top of the second sealing plate 31 is tightly fitted with the bottom of the first sealing plate 21;

[0038] By providing the first sealing plate 21 and the second sealing plate 31 , the space where the battery pack 4 is located is sealed due to the tight fit between the first sealing plate 21 and the second sealing plate 31 during use, thereby effectively avoiding the possibility of combustion when the battery pack 4 fails.

[0039] Specifically, a through slot 24 is formed inside the sealing cover 2 above the battery pack 4. A piston 25 is slidably disposed inside the through slot 24. The outer side of the piston 25 is tightly fitted against the inner wall of the through slot 24. A second spring 26 is fixedly disposed on the top of the piston 25. The top end of the second spring 26 is fixedly connected to the sealing cover 2. A distance sensor 27 is fixedly disposed above the piston 25 inside the sealing cover 2.

[0040] By providing the through groove 24 and the piston 25 , when a fault occurs in the battery pack 4 during detection, gas will be generated, which will squeeze the piston 25 inside the through groove 24 in a sealed environment to move, and the distance sensor 27 will be used for detection, thereby quickly detecting the occurrence of the fault.

[0041] Specifically, a card slot 46 is provided on both sides of the sleeve 44, and a card block 45 is fixedly provided on both sides of the guide rod 42. The two card blocks 45 are respectively slidably provided in the two card slots 46, and the expansion and contraction of the sleeve 44 is limited by the card blocks 45. A fourth spring 43 is fixedly provided at the bottom of the guide rod 42, and the fourth spring 43 is telescopically provided inside the sleeve 44.

[0042] By providing the clamping slot 46 and the guide rod 42 , the movement of the sleeve 44 is limited during use, thereby effectively improving the stability of the structure.

[0043] Specifically, the four second pull rods 37 are fixedly provided with a connecting rod 38 at one end away from the sleeve 44. The four connecting rods 38 are slidably connected to the inner sides of the four first pull rods 36. The outer sides of the four connecting rods 38 are movably sleeved with a third spring 39. The four third springs 39 are telescopically arranged inside the four first pull rods 36.

[0044] By providing the fourth spring 43 , the connecting rod 38 and the third spring 39 , during use, the fourth spring 43 and the third spring 39 are squeezed by the movement of the placement table 41 and the connecting rod 38 , thereby improving the stability of the clamping.

[0045] Specifically, four slide grooves 33 are fixedly provided on the outside of the fixed platform 30, and four clamping blocks 34 are slidably provided on the inner sides of the four slide grooves 33 respectively. The four slide grooves 33 are fixedly provided with mounting plates 51 on both sides of the four clamping blocks 34 respectively. Multiple sliding rods 50 are telescopically provided inside the multiple mounting plates 51. The multiple sliding rods 50 are rotatably provided with rollers 5 at one end close to the clamping blocks 34. One side of the multiple rollers 5 is tightly fitted with the four clamping blocks 34 respectively. The multiple sliding rods 50 are fixedly provided with sliding plates 52 at one end away from the clamping blocks 34. The multiple sliding plates 52 are fixedly provided with multiple fifth springs 53 on the side away from the mounting plates 51, and are telescopically extended and retracted on both sides of the slide grooves 33 through the multiple fifth springs 53.

[0046] By setting the roller 5 and the slide bar 50, the fifth spring 53 is squeezed by the extension and contraction of the slide bar 50 during use so that the roller 5 and the clamping block 34 fit tightly together, effectively improving the stability of the clamping block 34 when moving, thereby making the clamping of the battery pack 4 more stable.

[0047] Specifically, a first rubber pad 28 is fixedly provided at the bottom of the first sealing plate 21, and a second rubber pad 35 is fixedly provided at the top of the second sealing plate 31. The bottom of the first rubber pad 28 is tightly fitted with the top of the second rubber pad 35. Four sliding rods 101 are fixedly provided on one side of the connecting plate 19. The outer sides of the four sliding rods 101 are all slidably connected to the mounting seat 17.

[0048] By providing the first rubber pad 28 and the second rubber pad 35 and by the close fit between the first rubber pad 28 and the second rubber pad 35 , the sealing performance is effectively improved, and by providing the sliding rod 101 , the sealing stability is effectively improved.

[0049] 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 are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy vehicle battery withstand voltage testing robot, comprising a workbench (1), characterized in that: Four sealing boxes (3) are arranged on the outer circumference of the top of the workbench (1); a robot base (10) is fixedly arranged on the middle side of the four sealing boxes (3) on the top of the workbench (1); a first mechanical arm (11) is rotatably arranged on one side of the top of the workbench (1); a second mechanical arm (12) is rotatably arranged on one side of the top of the first mechanical arm (11); a third mechanical arm (13) is rotatably arranged on one side of the top of the second mechanical arm (12); a fourth mechanical arm (14) is rotatably arranged on one side of the top of the third mechanical arm (13); a fifth mechanical arm (15) is rotatably arranged on one side of the top of the fourth mechanical arm (14); a sixth mechanical arm (16) is rotatably arranged on one side of the top of the fifth mechanical arm (15); a mounting seat (17) is rotatably arranged on one side of the bottom of the sixth mechanical arm (16); a telescopic rod (18) is fixedly arranged on the bottom of the mounting seat (17); and a connecting plate (19) is telescopically connected to the mounting seat (17) through the telescopic rod (18); a sealing cover (2) is fixedly arranged on the bottom of the connecting plate (19); The bottom of the sealing cover (2) is tightly fitted on the top of one of the sealing boxes (3) and seals the sealing box (3). The battery pack (4) is fixedly clamped inside the sealing box (3). Two power supply slots (40) are fixedly provided on the top of the battery pack (4). Two power supply heads (20) are fixedly provided on the bottom of the sealing cover (2). The two power supply heads (20) are respectively matched with the two power supply slots (40). A fixing platform (30) is fixedly provided inside the sealing box (3). Four clamping blocks (34) are slidably provided on the top of the fixing platform (30). The four clamping blocks (34) are tightly fitted on the outside of the battery pack (4) to clamp it.

2. A new energy vehicle battery withstand voltage testing robot according to claim 1, characterized in that: The top of the fixing platform (30) is telescopically provided with a placement platform (41) at the bottom of the battery pack (4), the top of the placement platform (41) is tightly fitted with the bottom of the battery pack (4), the bottom of the placement platform (41) is telescopically connected with a sleeve (44), the outer circumference of the sleeve (44) is provided with four rotation grooves (47), the inner sides of the four rotation grooves (47) are all rotatably provided with second pull rods (37), one side of the four second pull rods (37) are telescopically connected with a first pull rod (36), and the four first pull rods (36) are respectively rotatably connected to the bottoms of the four clamping blocks (34).

3. The new energy vehicle battery withstand voltage testing robot according to claim 1, characterized in that: The bottom of the sealing cover (2) is telescopically provided with an extrusion rod (22), the top of the extrusion rod (22) is fixedly provided with a first spring (23), the top of the first spring (23) is fixedly connected to the sealing cover (2), the bottom of the extrusion rod (22) is fixedly provided with a first sealing plate (21), the inside of the sealing box (3) is fixedly provided with four support rods (32) on the outside of the battery pack (4), the top of the four support rods (32) is fixedly provided with a second sealing plate (31), and the top of the second sealing plate (31) is tightly fitted with the bottom of the first sealing plate (21).

4. A new energy vehicle battery withstand voltage testing robot according to claim 3, characterized in that: A through groove (24) is provided inside the sealing cover (2) above the battery pack (4); a piston (25) is slidably provided inside the through groove (24); the outer side of the piston (25) is tightly fitted with the inner wall of the through groove (24); a second spring (26) is fixedly provided on the top of the piston (25); the top end of the second spring (26) is fixedly connected to the sealing cover (2); and a distance sensor (27) is fixedly provided inside the sealing cover (2) above the piston (25).

5. The new energy vehicle battery withstand voltage testing robot according to claim 2, characterized in that: Both sides of the sleeve (44) are provided with card slots (46), and both sides of the guide rod (42) are fixedly provided with card blocks (45). The two card blocks (45) are respectively slidably provided in the two card slots (46), and the expansion and contraction of the sleeve (44) is limited by the card blocks (45). A fourth spring (43) is fixedly provided at the bottom of the guide rod (42), and the fourth spring (43) is telescopically provided inside the sleeve (44).

6. A new energy vehicle battery withstand voltage testing robot according to claim 5, characterized in that: The four second pull rods (37) are fixedly provided with a connecting rod (38) at one end away from the sleeve (44), and the four connecting rods (38) are respectively slidably connected to the inner side of the four first pull rods (36). The outer sides of the four connecting rods (38) are movably sleeved with a third spring (39), and the four third springs (39) are respectively telescopically arranged on the inner side of the four first pull rods (36).

7. The new energy vehicle battery withstand voltage testing robot according to claim 2, characterized in that: Four slide grooves (33) are fixedly provided on the outside of the fixed platform (30), and the four clamping blocks (34) are respectively slidably provided on the inside of the four slide grooves (33). The four slide grooves (33) are respectively fixedly provided with mounting plates (51) on both sides of the four clamping blocks (34). A plurality of slide rods (50) are telescopically provided inside the plurality of mounting plates (51). The plurality of slide rods (50) are rotatably provided with rollers (5) at one end close to the clamping block (34), and one side of the plurality of rollers (5) is tightly fitted with the four clamping blocks (34). The plurality of slide rods (50) are fixedly provided with sliding plates (52) at one end away from the clamping block (34). The plurality of sliding plates (52) are fixedly provided with a plurality of fifth springs (53) at one side away from the mounting plate (51), and are telescopically provided on both sides of the slide groove (33) by the plurality of fifth springs (53).

8. The new energy vehicle battery withstand voltage testing robot according to claim 3, characterized in that: A first rubber pad (28) is fixedly provided at the bottom of the first sealing plate (21), a second rubber pad (35) is fixedly provided at the top of the second sealing plate (31), the bottom of the first rubber pad (28) and the top of the second rubber pad (35) are tightly fitted, and four sliding rods (101) are fixedly provided on one side of the connecting plate (19), and the outer sides of the four sliding rods (101) are all slidably connected to the mounting seat (17).

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