A generator rotor shaft concentricity testing and processing mechanism

Abstract

The invention discloses a generator rotor shaft concentricity testing and processing mechanism, which relates to the technical field of metal processing, and comprises a base plate, wherein a first T-shaped slot is provided at the top center of the base plate, a connecting T-shaped plate is provided in the inner cavity of the first T-shaped slot, and a cross bar is fixedly connected to the left and right sides of the connecting T-shaped plate. Through the mutual cooperation between the connecting T-shaped plate, an elastic plate, a connecting arc plate, an L-shaped plate and other structures, one or two generators can be placed on the base plate, the elastic plate is sleeved on the surface of the generator to limit the generator, and the connecting arc plate is sleeved on the adjacent generator rotor shaft surface to facilitate the positioning of the generator rotor shaft. The setting of the connecting T-shaped plate can drive the L-shaped plates on the left and right sides to move left and right, thereby cooperating with the position of the generator.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, in particular to a generator rotor shaft concentricity testing and processing mechanism. Background Art

[0002] The generator rotor shaft concentricity testing and processing mechanism is a supporting device for rotor shaft grinding and testing. When the generator is in use, the role of the rotor shaft is particularly important, and the surface position of the rotor shaft needs to be ground regularly. With the continuous development of science and technology, people have higher and higher requirements for the manufacturing process of the generator rotor shaft concentricity testing and processing mechanism. The processing of metal parts includes simple grinding and drilling, etc. The object needs to be clamped and positioned before processing. Therefore, relevant devices are needed when testing and processing the generator rotor shaft concentricity.

[0003] However, there are some problems in the testing and processing of existing generator rotor shafts. It is not convenient to test and process multiple generator rotor shafts at the same time during the testing and processing of existing generator rotor shafts, which will reduce the use efficiency of the device. At the same time, the existing device is not convenient for testing and processing generator rotor shafts of different sizes, which may affect the application scope of the device. During the testing process of the rotor shaft, the existing device usually does not have the effect of processing the rotor shaft. The two working modes are usually processed separately, and such operation may cause inaccurate processing effects or test results. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a generator rotor shaft concentricity testing and processing mechanism, so as to facilitate the testing and processing of multiple generator rotor shafts and the testing and processing of generator rotor shafts of different sizes.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a generator rotor shaft concentricity testing and processing mechanism, comprising a base plate, a first T-slot is provided at the top center of the base plate, a connecting T-plate is provided in the inner cavity of the first T-slot, the left and right sides of the connecting T-plate are fixedly connected with cross bars, the end of the cross bar away from the connecting T-plate is fixedly connected with an L-shaped plate, the front and rear sides of the L-shaped plate are fixedly connected with limit plates, the bottom of the limit plate is fixedly connected with universal wheels, the front side of the base plate is fixedly connected with two vertical plates, the front sides of the two vertical plates are provided with a second T-slot, the rear side of the base plate is fixedly connected with two elastic plates, the inner cavity of the second T-slot is movably connected to the limit T-plate, one side of the elastic plate is fixedly connected to the front side of the adjacent limit T-plate, and the left and right sides of the base plate are provided with adjustment mechanisms.

[0006] Preferably, the adjustment mechanism comprises two movable plates, the two movable plates are arranged left and right, the movable plates are located on one side of the adjacent L-shaped plates, the side of the L-shaped plates away from the bottom plate is provided with two blind holes, the bottom of the movable plates are fixedly connected to two vertical rods, the vertical rods are located in the adjacent blind hole cavities, the inner cavities of the movable plates are provided with through holes, the inner cavities of the through holes are penetrated by rotating rods, the top of the rotating rod is provided with a third T-slot on the side close to the bottom plate, the inner cavity of the third T-slot is movably connected with a T-block, the top of the T-block is fixedly connected to the L-shaped rod, the end of the L-shaped rod away from the T-block is fixedly connected to a limiting ring, the inner cavity of the limiting ring is fixedly connected to a tester, and the outer edge of the rotating rod is sleeved on the side close to the bottom plate There are two adjusting rings, and the two adjacent adjusting rings are respectively located on the left and right sides of the adjacent L-shaped rods, and a T-shaped rod is fixedly connected between the two adjacent adjusting rings near the bottom. The bottom ends of the T-shaped rods are fixedly connected with adjusting plates, and the inner cavity of the adjusting plate is provided with a vertical groove, and a movable rod is penetrated through the inner cavity of the vertical groove. The end of the movable rod close to the bottom plate is fixedly connected with a grinding stick, and the end of the movable rod away from the bottom plate is fixedly connected with a limiting disk, and the inner cavity of the movable rod is provided with a first threaded hole, and the bottom of the adjusting plate is provided with a second threaded hole, and the inner cavity of the second threaded hole is threadedly connected to a limiting bolt, and the top end of the limiting bolt penetrates through the adjacent first threaded hole and is threadedly connected to it, and the top end of the limiting bolt is inserted into the top of the adjacent vertical groove.

[0007] Preferably, a plurality of third threaded holes are provided on one side of the bottom of the rotating rod close to the bottom plate, a fourth threaded hole is provided on the bottom of the adjusting ring, and the inner cavities of the adjacent third threaded holes and fourth threaded holes are both threadedly connected with connecting bolts.

[0008] Preferably, a fixing ring is provided on one side of the movable plate close to the base plate, and the fixing ring is fixedly connected to the outer edge of an adjacent rotating rod. Four limiting arc plates are provided on the side of the movable plate away from the base plate, and adjacent limiting arc plates are commonly fixedly connected with an elastic arc rod, a fifth threaded hole is provided in the inner cavity of the limiting arc plate, and a sixth threaded hole is provided in the outer edge of the rotating rod, and the adjacent fifth threaded hole and sixth threaded hole inner cavities are commonly fixedly connected with the limiting threaded rod.

[0009] Preferably, one side of the L-shaped plate is provided with a movable groove, the inner cavity of the movable groove is movably connected with a movable block, the side of the movable block away from the bottom plate is fixedly connected with a connecting U-shaped block, the inner cavity of the connecting U-shaped block is hinged with a swing block, the side of the swing block away from the L-shaped plate is fixedly connected with an electric telescopic rod, the outer edge of the electric telescopic rod away from the L-shaped plate is hingedly connected to a limiting U-shaped block, the top of the limiting U-shaped block is provided with a support frame, the bottom of the support frame is provided with a sliding groove, the top of the limiting U-shaped block is fixedly connected with a slider, the slider is movably connected to the inner cavity of the adjacent sliding groove, and the top of the support frame is fixedly connected with a plurality of elastic rods.

[0010] Preferably, the inner cavity of the support frame is provided with a motor, the motor power output shaft is fixedly connected to a transmission rod, a connecting hole is provided at one end of the transmission rod close to the base plate, convex plates are fixedly connected on the left and right sides of the connecting hole, and grooves are provided on the front and rear sides of the rotating rod away from the base plate, and the convex plates are located in the inner cavities of adjacent grooves.

[0011] Preferably, the front and rear sides of the connecting U-shaped block are fixedly connected with connecting plates, the inner cavity of the connecting plate is provided with a seventh threaded hole, one side of the L-shaped plate is provided with a plurality of eighth threaded holes, the inner cavity of the seventh threaded hole is threadedly connected with a connecting threaded rod, and one end of the connecting threaded rod is threadedly connected to the inner cavity of the adjacent eighth threaded hole.

[0012] Preferably, four connecting arc plates are provided at the top of the bottom plate near the left and right sides, and an arc groove is opened on the corresponding side of two adjacent connecting arc plates, and the inner cavities of two adjacent arc grooves are commonly fixedly connected with an elastic arc plate, and one side of the connecting arc plates located on the front and rear sides is fixedly connected with an elastic rope, and the end of the elastic rope away from the connecting arc plate is fixedly connected to the outer edge of the bottom plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention can realize that one or two generators can be placed on the bottom plate by connecting the T-shaped plate, the elastic plate, the connecting arc plate, the L-shaped plate and other structures to cooperate with each other. The elastic plate is sleeved on the surface of the generator to limit the position of the generator. The connecting arc plate is sleeved on the surface of the adjacent generator rotor shaft to facilitate the positioning of the generator rotor shaft. The setting of the connecting T-shaped plate can drive the L-shaped plates on the left and right sides to move left and right, so as to match the position of the generator.

[0015] Through the mutual cooperation among the motor, electric telescopic rod, tester, grinding rod and other structures, the electric telescopic rod can drive the motor to move up and down through the support frame, and the motor can drive the rotating rod to move up and down, so as to align the axis center of the rotating rod with the axis center of the generator rotor shaft. The tester and the grinding rod are both attached to the surface of the generator rotor shaft, the motor drives the rotating rod to rotate, the rotating rod drives the tester and the grinding rod to rotate, the grinding rod grinds the surface of the generator rotor shaft, and the tester tests the surface of the generator rotor shaft, thereby improving the working efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a stereogram of the present invention;

[0017] Figure 2 This is a schematic diagram of the bottom plate structure of the component of the present invention;

[0018] Figure 3 This is an exploded view of the L-shaped plate component of the present invention;

[0019] Figure 4 It is a left view of the bottom plate of the component of the present invention;

[0020] Figure 5 This is a bottom view of the structure of the component support frame of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the electric telescopic rod component of the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of the limiting arc plate of the component of the present invention;

[0023] Figure 8 This is a schematic diagram of the motor structure of the component of the present invention;

[0024] Fig. 9 An exploded view of the rotating rod of the component of the present invention;

[0025] Fig.10 It is a schematic diagram of the structure of the limiting T-shaped plate of the component of the present invention.

[0026] Numbers in the figure: 1, bottom plate; 2, elastic plate; 3, connecting T-shaped plate; 4, cross bar; 5, L-shaped plate; 6, movable plate; 7, elastic rope; 8, tester; 9, connecting arc plate; 10, elastic arc plate; 11, vertical plate; 12, limit plate; 13, universal wheel; 14, support frame; 15, elastic rod; 16, electric telescopic rod; 17, motor; 18, transmission rod; 19, rotating rod; 20, fixing ring; 21, limit ring; 22, L-shaped rod; 23, grinding stick ; 24. Connecting U-shaped block; 25. Connecting plate; 26. Connecting threaded rod; 27. Swinging block; 28. Limiting U-shaped block; 29. ​​Sliding block; 30. Movable block; 31. Limiting arc plate; 32. Elastic arc rod; 33. Limiting threaded rod; 34. T-shaped block; 35. Adjusting ring; 36. Connecting bolt; 37. T-shaped rod; 38. Adjusting plate; 39. Limiting plate; 40. Movable rod; 41. Limiting bolt; 42. Limiting T-shaped plate; 43. Convex plate; 44. Vertical rod. DETAILED DESCRIPTION

[0027] See also Figure 1-10 , the present invention provides a technical solution: Embodiment 1:

[0028] A generator rotor shaft concentricity testing and processing mechanism comprises a bottom plate 1, a first T-shaped slot is provided at the top center of the bottom plate 1, a connecting T-shaped plate 3 is provided in the inner cavity of the first T-shaped slot, a cross bar 4 is fixedly connected to the left and right sides of the connecting T-shaped plate 3, an L-shaped plate 5 is fixedly connected to the end of the cross bar 4 away from the connecting T-shaped plate 3, a limit plate 12 is fixedly connected to the front and rear sides of the L-shaped plate 5, a universal wheel 13 is fixedly connected to the bottom of the limit plate 12, two vertical plates 11 are fixedly connected to the front side of the bottom plate 1, a second T-shaped slot is provided on the front side of the two vertical plates 11, and two elastic wheels are fixedly connected to the rear side of the bottom plate 1 The elastic plate 2 and the second T-slot inner cavity are movably connected to the limited T-plate 42, one side of the elastic plate 2 is fixedly connected to the front side of the adjacent limited T-plate 42, the left and right sides of the bottom plate 1 are provided with adjustment mechanisms, four connecting arc plates 9 are provided at the top of the bottom plate 1 near the left and right sides, and the corresponding sides of the two adjacent connecting arc plates 9 are provided with arc grooves, and the inner cavities of the two adjacent arc grooves are commonly fixedly connected with elastic arc plates 10, and one side of the connecting arc plates 9 on the front and rear sides is fixedly connected with elastic ropes 7, and the end of the elastic rope 7 away from the connecting arc plate 9 is fixedly connected to the outer edge of the bottom plate 1;

[0029] One or two generators can be placed on the base plate 1, and the elastic plate 2 is sleeved on the surface of the generator to limit the generator. The connecting arc plate 9 is sleeved on the surface of the adjacent generator rotor shaft to facilitate the positioning of the generator rotor shaft. The setting of the connecting T-shaped plate 3 can drive the L-shaped plates 5 on the left and right sides to move left and right, thereby matching the position of the generator. Embodiment 2:

[0030] The adjustment mechanism includes two movable plates 6, which are arranged on the left and right. The movable plates 6 are located on one side of the adjacent L-shaped plate 5. Two blind holes are provided on the side of the L-shaped plate 5 away from the bottom plate 1. The bottom of the movable plate 6 is fixedly connected to two vertical rods 44, and the vertical rods 44 are located in the adjacent blind hole cavities. Through holes are provided in the inner cavities of the movable plates 6. The inner cavities of the through holes are penetrated by rotating rods 19. A third T-slot is provided on the top of the rotating rod 19 close to the bottom plate 1. The inner cavities of the third T-slots are movably connected to T-blocks 34. The tops of the T-blocks 34 are fixedly connected to L-shaped rods 22. The ends of the L-shaped rods 22 away from the T-blocks 34 are fixedly connected to the limiting rings 21. The inner cavities of the limiting rings 21 are fixedly connected to the tester 8. The outer edge of the rotating rod 19 close to the bottom plate 1 is sleeved with two adjustment Ring 35, two adjacent adjustment rings 35 are respectively located on the left and right sides of the adjacent L-shaped rod 22, and a T-shaped rod 37 is fixedly connected between the two adjacent adjustment rings 35 near the bottom. The bottom ends of the T-shaped rods 37 are fixedly connected to adjustment plates 38. The inner cavity of the adjustment plate 38 is provided with a vertical groove, and a movable rod 40 is penetrated in the inner cavity of the vertical groove. The end of the movable rod 40 close to the bottom plate 1 is fixedly connected to the grinding stick 23, and the end of the movable rod 40 away from the bottom plate 1 is fixedly connected to the limiting plate 39. The inner cavity of the movable rod 40 is provided with a first threaded hole, and the bottom of the adjustment plate 38 is provided with a second threaded hole. The inner cavity of the second threaded hole is threadedly connected to a limiting bolt 41. The top of the limiting bolt 41 penetrates the adjacent first threaded hole and is threadedly connected thereto, and the top of the limiting bolt 41 is inserted into the top of the adjacent vertical groove.

[0031] A plurality of third threaded holes are provided on the side of the bottom of the rotating rod 19 close to the bottom plate 1, a fourth threaded hole is provided on the bottom of the adjusting ring 35, and the inner cavities of the adjacent third threaded holes and the fourth threaded holes are commonly threadedly connected with connecting bolts 36, a fixing ring 20 is provided on the side of the movable plate 6 close to the bottom plate 1, and the fixing ring 20 is fixedly connected to the outer edge of the adjacent rotating rod 19, and four limiting arc plates 31 are provided on the side of the movable plate 6 away from the bottom plate 1, and elastic arc rods 32 are commonly fixedly connected between the adjacent limiting arc plates 31. The inner cavity of the limiting arc plate 31 is provided with a fifth threaded hole, the outer edge of the rotating rod 19 is provided with a sixth threaded hole, the inner cavities of the adjacent fifth threaded holes and the sixth threaded holes are fixedly connected to the limiting threaded rod 33, a movable groove is provided on one side of the L-shaped plate 5, and the inner cavity of the movable groove is movably connected to a movable block 30, and the side of the movable block 30 away from the bottom plate 1 is fixedly connected to the connecting U-shaped block 24, and the inner cavity of the connecting U-shaped block 24 is hinged with a swing block 27, and the side of the swing block 27 away from the L-shaped plate 5 is fixedly connected to an electric telescopic Rod 16, the outer edge of the electric telescopic rod 16 is hinged to a limited U-shaped block 28 on one side away from the L-shaped plate 5, the top of the limited U-shaped block 28 is provided with a support frame 14, the bottom of the support frame 14 is provided with a slide groove, the top of the limited U-shaped block 28 is fixedly connected with a slider 29, the slider 29 is movably connected to the adjacent slide groove cavity, the top of the support frame 14 is fixedly connected with a plurality of elastic rods 15, the inner cavity of the support frame 14 is provided with a motor 17, the power output shaft of the motor 17 is fixedly connected with a transmission rod 18, and the transmission rod 18 is close to the bottom plate 1 A connecting hole is provided at one end, and a convex plate 43 is fixedly connected to the left and right sides of the connecting hole. A groove is provided on the front and rear sides of the rotating rod 19 away from the bottom plate 1, and the convex plate 43 is located in the adjacent groove cavity. The front and rear sides of the connecting U-shaped block 24 are fixedly connected to the connecting plate 25, and the inner cavity of the connecting plate 25 is provided with a seventh threaded hole. A plurality of eighth threaded holes are provided on one side of the L-shaped plate 5. The inner cavity of the seventh threaded hole is threadedly connected to a connecting threaded rod 26, and one end of the connecting threaded rod 26 is threadedly connected to the inner cavity of the adjacent eighth threaded hole;

[0032] The electric telescopic rod 16 drives the motor 17 to move up and down through the support frame 14, and the motor 17 drives the rotating rod 19 to move up and down, so as to align the axis of the rotating rod 19 with the axis of the generator rotor shaft. The tester 8 and the grinding rod 23 are both attached to the surface of the generator rotor shaft. The motor 17 drives the rotating rod 19 to rotate, and the rotating rod 19 drives the tester 8 and the grinding rod 23 to rotate. The grinding rod 23 grinds the surface of the generator rotor shaft, and the tester 8 tests the surface of the generator rotor shaft, thereby improving the working efficiency of the device.

[0033] Working principle: When the device starts working, the operator places one or two generators on the top of the bottom plate 1, pulls the elastic plate 2, and the elastic plate 2 drives the limiting T-shaped plate 42 to move, and places the limiting T-shaped plate 42 in the T-shaped groove inside the vertical plate 11, so as to limit the generator, take out the connecting arc plate 9, and put multiple connecting arc plates 9 on the same side on the surface of the generator rotor shaft. The connecting arc plate 9 is arranged by the elastic arc plate 10, so that the connecting arc plate 9 is easy to be put on the surface of the generator rotor shaft of different diameters. The elastic rope 7 can limit the connecting arc plate 9, move the L-shaped plate 5 left and right, and the L-shaped plate 5 drives the cross bar 4 and the connecting T-shaped plate 3 to move, so as to adjust the position of the L-shaped plates 5 on the left and right sides. After the position of the axis is determined, the electric telescopic rod 16 is started through an external power supply, and the electric telescopic rod 16 drives the limit U-shaped block 28 to move, and the limit U-shaped block 28 drives the support frame 14 to move through the slider 29, so as to adjust the position of the support frame 14. When it is necessary to adjust the moving height of the support frame 14, the operator rotates the connecting threaded rod 26, removes the connecting threaded rod 26 from the surface of the L-shaped plate 5, and moves the connecting U-shaped block 24 downward. The connecting U-shaped block 24 drives the electric telescopic rod 16 to move downward through the swing block 27, and the electric telescopic rod 16 drives the slider 29 to move through the limit U-shaped block 28. Then the electric telescopic rod 16 is started again, so that the height of the support frame 14 can be adjusted, and the support frame 14 drives the motor 17 to move. The motor 17 drives the rotating rod 19 to move through the transmission rod 18, and the rotating rod 19 drives the movable plate 6 and the vertical rod 44 to move up and down, aligns the axis of the rotating rod 19 with the axis of the generator rotor shaft, and fits one end of the tester 8 to the surface of the generator rotor shaft. The motor 17 is started, and the motor 17 drives the transmission rod 18 to rotate. The transmission rod 18 drives the rotating rod 19 to rotate through the convex plate 43. The rotating rod 19 drives the tester 8 to rotate through the T-block 34, the L-shaped rod 22 and the limit ring 21. The tester 8 tests the surface of the generator rotor shaft. When the surface of the generator rotor shaft needs to be polished, the limit bolt 41 is rotated, and the limit bolt 41 drives the movable rod 40 to move up and down, and the movable rod 40 drives the polishing rod 23 to The motor 17 moves up and down, and the grinding rod 23 is attached to the surface of the generator rotor shaft. When the motor 17 is working, it drives the rotating rod 19 to rotate. The rotating rod 19 drives the movable rod 40 to rotate through the adjusting ring 35, the T-shaped rod 37 and the adjusting plate 38. The movable rod 40 drives the grinding rod 23 to rotate, and the grinding rod 23 grinds the surface of the generator rotor shaft. Testing and processing can be performed simultaneously in the device. If the motor 17 fails during long-term work, the operator rotates the limiting threaded rod 33 to remove the limiting threaded rod 33 from the surface of the rotating rod 19, moves the rotating rod 19, and removes the rotating rod 19 from the inside of the movable plate 6, and then swings the support frame 14. The support frame 14 drives the limiting U-shaped block 28 to swing through the slider 29.Thus, the motor 17 can be taken out from the support frame 14.

Claims

1. A generator rotor shaft concentricity testing and processing mechanism, comprising a base plate (1), characterized in that: A first T-shaped groove is provided at the center of the top of the bottom plate (1), a connecting T-shaped plate (3) is provided in the inner cavity of the first T-shaped groove, the left and right sides of the connecting T-shaped plate (3) are fixedly connected to cross bars (4), the ends of the cross bars (4) away from the connecting T-shaped plate (3) are fixedly connected to L-shaped plates (5), the front and rear sides of the L-shaped plate (5) are fixedly connected to limit plates (12), the bottom of the limit plates (12) are fixedly connected to universal wheels (13), the front side of the bottom plate (1) is fixedly connected to two vertical plates (11), the front sides of the two vertical plates (11) are provided with second T-shaped grooves, the rear side of the bottom plate (1) is fixedly connected to two elastic plates (2), the inner cavities of the second T-shaped grooves are movably connected to the limit T-shaped plates (42), the elastic plates ( 2) one side is fixedly connected to the front side of the adjacent limiting T-shaped plate (42), the bottom plate (1) is provided with an adjustment mechanism on both the left and right sides, the adjustment mechanism comprises two movable plates (6), the two movable plates (6) are arranged on the left and right sides, the movable plates (6) are located on one side of the adjacent L-shaped plate (5), the side of the L-shaped plate (5) away from the bottom plate (1) is provided with two blind holes, the bottom of the movable plate (6) is fixedly connected with two vertical rods (44), the vertical rods (44) are located in the adjacent blind hole cavity, the inner cavity of the movable plate (6) is provided with a through hole, the inner cavity of the through hole is penetrated by a rotating rod (19), the top of the rotating rod (19) is provided with a third T-shaped slot on the side close to the bottom plate (1), the inner cavity of the third T-shaped slot is movably connected with A T-shaped block (34), the top of each T-shaped block (34) is fixedly connected to an L-shaped rod (22), one end of each L-shaped rod (22) away from the T-shaped block (34) is fixedly connected to a limit ring (21), the inner cavity of each limit ring (21) is fixedly connected to a tester (8), the outer edge of each rotating rod (19) near the bottom plate (1) is sleeved with two adjustment rings (35), two adjacent adjustment rings (35) are respectively located on the left and right sides of the adjacent L-shaped rod (22), a T-shaped rod (37) is fixedly connected between the two adjacent adjustment rings (35) near the bottom, the bottom ends of each T-shaped rod (37) are fixedly connected to an adjustment plate (38), the inner cavity of each adjustment plate (38) is provided with a vertical groove, and the inner cavity of each vertical groove is penetrated by a movable A movable rod (40), one end of the movable rod (40) close to the bottom plate (1) is fixedly connected to a grinding stick (23), one end of the movable rod (40) away from the bottom plate (1) is fixedly connected to a limiting plate (39), a first threaded hole is provided in the inner cavity of the movable rod (40), a second threaded hole is provided at the bottom of the adjustment plate (38), the inner cavity of the second threaded hole is threadedly connected to a limiting bolt (41), the top end of the limiting bolt (41) passes through an adjacent first threaded hole and is threadedly connected thereto, the top end of the limiting bolt (41) is inserted into the top of an adjacent vertical groove, four connecting arc plates (9) are provided at the top of the bottom plate (1) near the left and right sides, and an arc groove is provided on the corresponding side of two adjacent connecting arc plates (9),The inner cavities of two adjacent arc-shaped grooves are both fixedly connected to elastic arc-shaped plates (10); one side of the connecting arc-shaped plates (9) located on the front and rear sides is fixedly connected to an elastic rope (7); one end of the elastic rope (7) away from the connecting arc-shaped plates (9) is fixedly connected to the outer edge of the bottom plate (1); one side of the L-shaped plate (5) is provided with a movable groove; the inner cavities of the movable grooves are movably connected to movable blocks (30); the side of the movable blocks (30) away from the bottom plate (1) is fixedly connected to a connecting U-shaped block (24); the inner cavities of the connecting U-shaped blocks (24) are hingedly connected to swing blocks (27); the side of the swing blocks (27) away from the L-shaped plate (5) is fixedly connected to an electric telescopic rod (16); the electric telescopic rod (16) A side of the outer edge away from the L-shaped plate (5) is hingedly connected with a limiting U-shaped block (28), a support frame (14) is provided on the top of the limiting U-shaped block (28), a slide groove is provided on the bottom of the support frame (14), a slider (29) is fixedly connected to the top of the limiting U-shaped block (28), and the slider (29) is movably connected to the adjacent slide groove cavity, a plurality of elastic rods (15) are fixedly connected to the top of the support frame (14), a fixing ring (20) is provided on the side of the movable plate (6) close to the bottom plate (1), and the fixing ring (20) is fixedly connected to the outer edge of the adjacent rotating rod (19), and four limiting arc plates (31) are provided on the side of the movable plate (6) away from the bottom plate (1). The adjacent limiting arc plates (31) are commonly fixedly connected with elastic arc rods (32), the inner cavities of the limiting arc plates (31) are each provided with a fifth threaded hole, the outer edges of the rotating rods (19) are each provided with a sixth threaded hole, the inner cavities of the adjacent fifth threaded holes and sixth threaded holes are commonly fixedly connected with a limiting threaded rod (33), the inner cavities of the supporting frames (14) are each provided with a motor (17), the power output shaft of the motor (17) is fixedly connected with a transmission rod (18), the transmission rod (18) is provided with a connection hole at one end close to the bottom plate (1), the left and right sides of the connection hole are fixedly connected with convex plates (43), the front and rear sides of the rotating rod (19) are each provided with a side away from the bottom plate (1) A groove is provided, the convex plate (43) is located in the inner cavity of the adjacent groove, the front and rear sides of the connecting U-shaped block (24) are fixedly connected to the connecting plate (25), the inner cavity of the connecting plate (25) is provided with a seventh threaded hole, one side of the L-shaped plate (5) is provided with a plurality of eighth threaded holes, the inner cavity of the seventh threaded hole is threadedly connected with a connecting threaded rod (26), one end of the connecting threaded rod (26) is threadedly connected to the inner cavity of the adjacent eighth threaded hole, the bottom of the rotating rod (19) is provided with a plurality of third threaded holes on the side close to the bottom plate (1), the bottom of the adjusting ring (35) is provided with a fourth threaded hole, and the inner cavities of the adjacent third threaded holes and fourth threaded holes are threadedly connected with connecting bolts (36).

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