A special-shaped beam butt welding tool for green building construction

Abstract

The present invention relates to the technical field of special-shaped beam welding, and specifically to a special-shaped beam butt welding tool for green building construction, comprising a workbench and a welding device. Two groups of mutually symmetrical support components are arranged at the upper end of the workbench, and a special-shaped beam main body is arranged on the inner side of the support component. A slideway is fixedly connected between the two groups of support components at the upper end of the workbench, and a gear rail is arranged between the two groups of the slideways. The upper ends of the two groups of the slideways are slidably connected with two groups of mutually symmetrical moving components, and the moving components are used to drive the special-shaped beam main body to move. The present invention can clamp the special-shaped beam main body by a pressure roller to ensure the stability of the special-shaped beam main body, and can position the special-shaped beam main body to ensure the alignment effect of the two groups of special-shaped beam main bodies.

Description

Technical Field

[0001] The invention relates to the technical field of special-shaped beam welding, in particular to a special-shaped beam butt welding tool for green building construction. Background Art

[0002] Special-shaped beams are beams whose cross-sectional shapes are not ordinary rectangles. Their cross-sectional shapes may be non-rectangular shapes such as basket-shaped, cross-shaped, T-shaped, L-shaped, I-shaped, etc., or even shapes that change along the length direction. The characteristic of this type of beam is its unique cross-sectional design, which can provide specific structural performance or adapt to specific building space requirements. Special-shaped beam welding is an important link in steel structure construction. It plays a vital role in ensuring the stability and safety of the entire structure. During the welding process of I-shaped special-shaped beams, the special-shaped beams need to be transported to the welding equipment and then aligned. This method is troublesome for docking. For this reason, we propose a special-shaped beam butt welding tool for green building construction. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a butt welding tool for special-shaped beams for green building construction.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: a tool for butt welding of special-shaped beams for green building construction, including a workbench and a welding device. Two groups of mutually symmetrical support components are arranged at the upper end of the workbench, and a special-shaped beam body is arranged on the inner side of the support component. A slideway is fixedly connected between the two groups of support components at the upper end of the workbench, and a rack is arranged between the two groups of the slideways. The upper ends of the two groups of the slideways are slidably connected with two groups of mutually symmetrical moving components, and the moving components are used to drive the movement of the special-shaped beam body.

[0005] Preferably, the supporting assembly includes a supporting plate fixedly connected to the workbench, two groups of guard plates are fixedly connected to the upper end of the supporting plate, two groups of clamping plates are fixedly connected between the two groups of guard plates, two groups of mutually symmetrical clamping shells are slidably connected to the opposite sides of the two groups of clamping plates, an electric push rod is fixedly connected to the inner side of the guard plate, the output end of the electric push rod is fixedly connected to the clamping shell, two groups of sliding openings are opened on the opposite sides of the two groups of clamping plates, two groups of first sliding blocks are fixedly connected to one side of the clamping shell, and the two groups of the first sliding blocks are slidably connected to the inner sides of the two groups of sliding openings respectively.

[0006] Preferably, the moving component includes second sliders respectively slidably connected to the inner sides of the two groups of slideways, the upper ends of the two groups of second sliders are slidably connected to a moving frame, a motor is installed on one side of the moving frame, the inner side of the moving frame is rotatably connected to a rotating shaft, a gear is provided on the outer side of the rotating shaft, the gear is meshed with a rack, one end of the rotating shaft is fixedly connected to the output shaft of the motor, a fixing component for clamping the special-shaped beam body is provided on the upper end of the moving frame, and a limiting mechanism for limiting the rotation of the gear is provided at the rear end of the moving frame.

[0007] Preferably, the fixing assembly includes a fixing block fixedly connected to the movable frame, the upper end of the fixing block is fixedly connected to a hidden shell, the inner side of the hidden shell is slidably connected to a slide cylinder, the upper end of the slide cylinder is fixedly connected to an arc plate, the front end of the arc plate is fixedly connected to a straight plate, the arc plate is inclined downward, and the front end of the straight plate is a magnet.

[0008] Preferably, the outer side of the slide cylinder is rotatably connected to two groups of U-shaped rods, one end of the U-shaped rod is rotatably connected to two groups of pressure rollers, turning openings are opened on both sides of the hidden shell, the inner side of the U-shaped rod is rotatably connected to a second connecting shaft, the second connecting shaft is fixedly connected to the inner side of the turning opening, the outer side of the slide cylinder is fixedly connected to two groups of third U-shaped plates, and the other end of the U-shaped rod is rotatably connected to the inner side of the third U-shaped plate.

[0009] Preferably, a positioning column is fixedly connected to the bottom end of the inner wall of the hidden shell, the slide tube is slidably sleeved on the outside of the positioning column, a spring is sleeved on the outside of the positioning column, and the upper end of the spring is fixedly connected to the slide tube.

[0010] Preferably, the limiting mechanism includes a ratchet fixedly connected to the outside of the rotating shaft, the rear end of the movable frame is fixedly connected to a connecting block, one side of the connecting block is rotatably connected to a V-row hook, one end of the V-row hook is provided with a hook, the other end of the V-row hook is rotatably connected to a connecting rod, the rear end of the movable frame is fixedly connected to a first U-shaped plate, the inner side of the first U-shaped plate is rotatably connected to a pressure rod, the upper end of the pressure rod is rotatably connected to a second U-shaped plate, and the second U-shaped plate is fixedly connected to the arc plate.

[0011] Preferably, a second rotating drum is fixedly connected to both sides of the first U-shaped plate, a first connecting shaft is rotatably connected to the inner side of the second rotating drum, the first connecting shaft passes through the first U-shaped plate and is fixedly connected to the pressure rod, and a second elastic sheet is arranged on the outer side of the first connecting shaft.

[0012] Preferably, fixed shafts are fixedly connected on both sides of the pressure rod, a first rotating drum is rotatably connected to the outer side of the fixed shaft, the first rotating drum is fixedly connected to the connecting rod, a first elastic sheet is arranged on the outer side of the fixed shaft, and the first elastic sheet is located on the inner side of the first rotating drum.

[0013] Compared with the prior art, the present invention provides a special-shaped beam butt welding tool for green building construction, which has the following beneficial effects:

[0014] 1. A special-shaped beam butt welding tool for green building construction can clamp the upper and lower sides of the special-shaped beam body by using a clamping shell to ensure the stability of the special-shaped beam body, and can push the clamping shell to fix the special-shaped beam body. The special-shaped beam body can be assisted by an arc plate to press the front end of the special-shaped beam body to the upper end of the straight plate, which is convenient for the slide tube to move downward, and the slide tube can be moved upward by a spring to facilitate the opening of the U-shaped rod. The U-shaped rod can be supported by a second connecting shaft to ensure that the U-shaped rod can move inward, and the upper end of the U-shaped rod will approach the special-shaped beam body. The special-shaped beam body is clamped by a pressure roller to ensure the stability of the special-shaped beam body, and the special-shaped beam body can be positioned to ensure the alignment effect of two groups of special-shaped beam bodies.

[0015] 2. A tool for butt welding of special-shaped beams for green building construction can press down the pressure rod by moving the arc plate downward, so that the pressure rod drives the first rotating drum to rotate on the fixed axis to drive the first spring plate to contract, and one end of the V-line hook can be pressed down by the connecting rod to move it downward, so that the other end of the V-line hook can be tilted upward, so that the V-line hook is separated from the ratchet, and the gear can be stuck by the V-line hook to prevent the motor from accidentally starting to move the moving frame, so as to ensure that the moving frame can move when the main body of the special-shaped beam moves to the fixed position. At this time, the motor is started to drive the rotating shaft to rotate, so that the gear rotates, and under the action of the rack, the moving frame slides on the upper end of the slideway, pulling the main body of the special-shaped beam forward, so as to facilitate the alignment of the two groups of special-shaped beam bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a partial structural schematic diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the support assembly structure of the present invention;

[0019] Figure 4 Cross-sectional view of the support assembly of the present invention Figure 1 ;

[0020] Figure 5 Cross-sectional view of the support assembly of the present invention Figure 2 ;

[0021] Figure 6 This is a schematic diagram of the structure of the mobile assembly of the present invention;

[0022] Figure 7 It is a cross-sectional view of the mobile assembly of the present invention;

[0023] Figure 8It is a schematic diagram of the structure of the fixing assembly of the present invention;

[0024] Fig. 9 It is a cross-sectional view of the fixing assembly of the present invention;

[0025] Fig.10 This is a schematic diagram of the structure of the travel restriction mechanism of the present invention;

[0026] Fig.11 It is a cross-sectional view of the travel limiting mechanism of the present invention;

[0027] Fig.12 For the present invention Fig.11 A schematic diagram of the enlarged structure of part A.

[0028] In the figure: 1, workbench; 2, welding equipment; 3, support assembly; 31, support plate; 32, guard plate; 33, clamping plate; 34, card shell; 35, slide; 36, first slider; 37, electric push rod; 4, special-shaped beam body; 5, slideway; 6, moving assembly; 61, second slider; 62, moving frame; 63, motor; 64, rotating shaft; 65, gear; 66, limit mechanism; 661, ratchet; 662, connecting block; 663, V-shaped hook; 664, connecting rod; 665, first U-shaped plate; 666, pressure rod ; 667, second U-shaped plate; 668, fixed shaft; 669, first rotating drum; 6610, first spring piece; 6611, second rotating drum; 6612, first connecting shaft; 6613, second spring piece; 67, fixed assembly; 671, fixed block; 672, hidden shell; 673, U-shaped rod; 674, pressure roller; 675, arc plate; 676, straight plate; 677, positioning column; 678, slide; 679, spring; 6710, turntable; 6711, second connecting shaft; 6712, third U-shaped plate; 7, rack. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0030] See also Figure 1 - Fig.12 A tool for butt welding of special-shaped beams for green building construction comprises a workbench 1 and a welding device 2. Two groups of mutually symmetrical support components 3 are arranged at the upper end of the workbench 1. A special-shaped beam body 4 is arranged on the inner side of the support component 3. A slideway 5 is fixedly connected between the two groups of support components 3 at the upper end of the workbench 1. A rack rail 7 is arranged between the two groups of slideways 5. Two groups of mutually symmetrical moving components 6 are slidably connected to the upper ends of the two groups of slideways 5. The moving components 6 are used to drive the special-shaped beam body 4 to move.

[0031] In this embodiment, the support assembly 3 includes a support plate 31 fixedly connected to the workbench 1, two groups of guard plates 32 are fixedly connected to the upper end of the support plate 31, two groups of splints 33 are fixedly connected between the two groups of guard plates 32, two groups of symmetrical card shells 34 are slidably connected to the opposite sides of the two groups of splints 33, an electric push rod 37 is fixedly connected to the inner side of the guard plate 32, the output end of the electric push rod 37 is fixedly connected to the card shell 34, two groups of sliding openings 35 are opened on the opposite sides of the two groups of splints 33, two groups of first sliding blocks 36 are fixedly connected to one side of the card shell 34, and the two groups of first sliding blocks 36 are respectively slidably connected to the inner sides of the two groups of sliding openings 35.

[0032] Specifically, the special-shaped beam body 4 can be clamped by the clamping shell 34, and the electric push rod 37 can push the clamping shell 34 to move and clamp the special-shaped beam body 4 to ensure the stability of the special-shaped beam body 4. The sliding opening 35 can facilitate the sliding of the first slider 36.

[0033] In this embodiment, the moving component 6 includes second sliders 61 that are respectively slidably connected to the inner sides of the two groups of slideways 5, and the upper ends of the two groups of second sliders 61 are slidably connected to a moving frame 62. A motor 63 is installed on one side of the moving frame 62. The inner side of the moving frame 62 is rotatably connected to a rotating shaft 64. A gear 65 is provided on the outer side of the rotating shaft 64. The gear 65 is meshed with the rack 7. One end of the rotating shaft 64 is fixedly connected to the output shaft of the motor 63. A fixing component 67 for clamping the special-shaped beam body 4 is provided at the upper end of the moving frame 62, and a limiting mechanism 66 for limiting the rotation of the gear 65 is provided at the rear end of the moving frame 62.

[0034] Specifically, the starting motor 63 can drive the rotating shaft 64 to rotate, so that the gear 65 rotates on the rack 7, so that the moving frame 62 drives the second slider 61 to move on the upper end of the slideway 5, and the moving frame 62 can drive the special-shaped beam body 4 to move forward.

[0035] In this embodiment, the fixed component 67 includes a fixed block 671 fixedly connected to the movable frame 62, the upper end of the fixed block 671 is fixedly connected to a hidden shell 672, the inner side of the hidden shell 672 is slidably connected to a slide cylinder 678, the upper end of the slide cylinder 678 is fixedly connected to an arc plate 675, the front end of the arc plate 675 is fixedly connected to a straight plate 676, the arc plate 675 is tilted downward, and the front end of the straight plate 676 is a magnet.

[0036] Specifically, the arc plate 675 can facilitate the movement of the special-shaped beam body 4 to the upper end of the straight plate 676, and the magnet at the front end of the straight plate 676 can facilitate the alignment of the two groups of straight plates 676 and the alignment of the two groups of special-shaped beam bodies 4.

[0037] In this embodiment, the outer side of the slide 678 is rotatably connected to two groups of U-shaped rods 673, one end of the U-shaped rod 673 is rotatably connected to two groups of pressure rollers 674, a turning opening 6710 is opened on both sides of the hidden shell 672, the inner side of the U-shaped rod 673 is rotatably connected to the second connecting shaft 6711, the second connecting shaft 6711 is fixedly connected to the inner side of the turning opening 6710, the outer side of the slide 678 is fixedly connected to two groups of third U-shaped plates 6712, and the other end of the U-shaped rod 673 is rotatably connected to the inner side of the third U-shaped plate 6712.

[0038] Specifically, the special-shaped beam body 4 will use the arc plate 675 to press the slide 678 downward, drive the U-shaped rod 673 to rotate, and make the pressure roller 674 clamp the special-shaped beam body 4, to ensure the stability of the special-shaped beam body 4, facilitate the moving frame 62 to drive the special-shaped beam body 4 to move, and can position the special-shaped beam body 4 to fix the moving position of the special-shaped beam body 4.

[0039] In this embodiment, a positioning column 677 is fixedly connected to the bottom end of the inner wall of the hidden shell 672, and a slide tube 678 is slidably sleeved on the outer side of the positioning column 677. A spring 679 is sleeved on the outer side of the positioning column 677, and the upper end of the spring 679 is fixedly connected to the slide tube 678.

[0040] Specifically, the positioning column 677 can facilitate the stability of the slide 678, and the spring 679 can facilitate the upward movement of the slide 678, the opening of the pressure roller 674, and the removal of the special-shaped beam body 4.

[0041] In this embodiment, the limiting mechanism 66 includes a ratchet 661 fixedly connected to the outside of the rotating shaft 64, the rear end of the movable frame 62 is fixedly connected to a connecting block 662, one side of the connecting block 662 is rotatably connected to a V-shaped hook 663, one end of the V-shaped hook 663 is provided with a hook, and the other end of the V-shaped hook 663 is rotatably connected to a connecting rod 664, the rear end of the movable frame 62 is fixedly connected to a first U-shaped plate 665, the inner side of the first U-shaped plate 665 is rotatably connected to a pressure rod 666, the upper end of the pressure rod 666 is rotatably connected to a second U-shaped plate 667, and the second U-shaped plate 667 is fixedly connected to the arc plate 675.

[0042] Specifically, the arc plate 675 moves downward, which can drive the pressure rod 666 to move downward, causing the connecting rod 664 to move downward, driving one end of the V-shaped hook 663 to move downward, causing the other end of the V-shaped hook 663 to tilt upward, so that the motor 63 can drive the rotating shaft 64 to rotate. The rotation of the rotating shaft 64 can be limited by the V-shaped hook 663 and the ratchet 661, thereby preventing the accidental movement of the moving frame 62 when the motor 63 is accidentally started, thereby ensuring the safety of workers.

[0043] In this embodiment, the second rotating cylinder 6611 is fixedly connected to both sides of the first U-shaped plate 665, the inner side of the second rotating cylinder 6611 is rotatably connected to the first connecting shaft 6612, the first connecting shaft 6612 passes through the first U-shaped plate 665 and is fixedly connected to the pressure rod 666, and a second spring piece 6613 is arranged on the outer side of the first connecting shaft 6612.

[0044] Specifically, the second elastic sheet 6613 can drive the first connecting shaft 6612 to move, so as to facilitate the rotation of the pressure rod 666 and the support of the special-shaped beam body 4 by the straight plate 676 .

[0045] In this embodiment, fixed shafts 668 are fixedly connected to both sides of the pressure rod 666, and the outer side of the fixed shaft 668 is rotatably connected to the first rotating cylinder 669. The first rotating cylinder 669 is fixedly connected to the connecting rod 664, and a first elastic piece 6610 is provided on the outer side of the fixed shaft 668. The first elastic piece 6610 is located on the inner side of the first rotating cylinder 669.

[0046] Specifically, the first elastic sheet 6610 can drive the first rotating drum 669 to rotate, thereby applying an upward force to the pressure rod 666, further ensuring that the straight plate 676 supports the special-shaped beam body 4.

[0047] It should be noted that when in use, the special-shaped beam body 4 is inserted between the clamping plates 33, so that the upper and lower sets of outer plates of the special-shaped beam body 4 are inserted into the inner side of the card shell 34, and the special-shaped beam body 4 is continued to be pushed onto the arc plate 675. With the assistance of the arc plate 675, the front end of the special-shaped beam body 4 is pressed onto the upper end of the straight plate 676. When the special-shaped beam body 4 moves to the upper end of the arc plate 675, the slide 678 will be pressed to move downward, so that the slide 678 presses the spring 679 to contract. At the same time, the slide 678 will drive the third U-shaped plate 6712 to move downward, so that the U-shaped rod 673 rotates on the inner side of the turning port 6710. At the same time, one end of the U-shaped rod 673 moves downward with the third U-shaped plate 6712 and rotates on the inner side of the third U-shaped plate 6712. The upper end of the U-shaped rod 673 will approach the special-shaped beam body 4, and the pressure roller 674 will be used to clamp the special-shaped beam body 4. At the same time, the arc When plate 675 moves downward, the second U-shaped plate 667 will press down the pressure rod 666, so that one end of the pressure rod 666 rotates inside the first U-shaped plate 665. At the same time, the first rotating cylinder 669 rotates on the fixed shaft 668 to drive the first elastic piece 6610 to contract, thereby driving the connecting rod 664 to move downward, so that the connecting rod 664 rotates at one end of the V-shaped hook 663, and drives one end of the V-shaped hook 663 to move downward, so that the other end of the V-shaped hook 663 is tilted upward, and the V-shaped hook 663 is separated from the ratchet 661. At this time, the motor 63 is started to drive the rotating shaft 64 to rotate, so that the gear 65 rotates, and under the action of the rack 7, the movable frame 62 slides on the upper end of the slideway 5, pulling the special-shaped beam body 4 forward, so that the two groups of special-shaped beam bodies 4 are aligned with each other, and then the electric push rod 37 is started to push the card shell 34 to slide, and the special-shaped beam body 4 is clamped.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tool for butt welding of special-shaped beams for green building construction, comprising a workbench (1) and welding equipment (2), characterized in that: The upper end of the workbench (1) is provided with two groups of mutually symmetrical support components (3), and a special-shaped beam body (4) is provided on the inner side of the support component (3). A slideway (5) is fixedly connected between the two groups of support components (3) at the upper end of the workbench (1), and a rack (7) is provided between the two groups of the slideways (5). The upper ends of the two groups of the slideways (5) are slidably connected with two groups of mutually symmetrical moving components (6), and the moving components (6) are used to drive the special-shaped beam body (4) to move. The support component (3) comprises a support plate (31) fixedly connected to the workbench (1), and the upper end of the support plate (31) is fixedly connected with two groups of guard plates (32), and two groups of clamping plates (33) are fixedly connected between the two groups of the guard plates (32). ), two groups of mutually symmetrical card shells (34) are slidably connected on opposite sides of the two groups of clamps (33), an electric push rod (37) is fixedly connected to the inner side of the guard plate (32), and the output end of the electric push rod (37) is fixedly connected to the card shell (34), and two groups of sliding openings (35) are opened on opposite sides of the two groups of clamps (33), and one side of the card shell (34) is fixedly connected to two groups of first sliders (36), and the two groups of first sliders (36) are respectively slidably connected to the inner sides of the two groups of sliding openings (35), and the moving assembly (6) includes second sliders (61) respectively slidably connected to the inner sides of the two groups of slideways (5), and the upper ends of the two groups of second sliders (61) are slidably connected to a moving frame (62), and the moving frame (6 2) is provided with a motor (63), the inner side of the movable frame (62) is rotatably connected to a rotating shaft (64), the outer side of the rotating shaft (64) is provided with a gear (65), the gear (65) is meshed with a rack (7), one end of the rotating shaft (64) is fixedly connected to the output shaft of the motor (63), the upper end of the movable frame (62) is provided with a fixing component (67) for clamping the special-shaped beam body (4), the rear end of the movable frame (62) is provided with a limiting mechanism (66) for limiting the rotation of the gear (65), the fixing component (67) comprises a fixing block (671) fixedly connected to the movable frame (62), the upper end of the fixing block (671) is fixedly connected to a hidden shell (672), The inner side of the hidden shell (672) is slidably connected to a slide cylinder (678), the upper end of the slide cylinder (678) is fixedly connected to an arc plate (675), the front end of the arc plate (675) is fixedly connected to a straight plate (676), the arc plate (675) is tilted downward, the front end of the straight plate (676) is a magnet, the outer side of the slide cylinder (678) is rotatably connected to two groups of U-shaped rods (673), one end of the U-shaped rod (673) is rotatably connected to two groups of pressure rollers (674), both sides of the hidden shell (672) are provided with a rotating opening (6710), the inner side of the U-shaped rod (673) is rotatably connected to a second connecting shaft (6711), and the second connecting shaft (6711) is fixedly connected to the inner side of the rotating opening (6710),Two sets of third U-shaped plates (6712) are fixedly connected to the outer side of the slide cylinder (678), and the other end of the U-shaped rod (673) is rotatably connected to the inner side of the third U-shaped plate (6712).

2. According to claim 1, a special-shaped beam butt welding tool for green building construction is characterized by: A positioning column (677) is fixedly connected to the bottom end of the inner wall of the hidden shell (672), the slide cylinder (678) is slidably sleeved on the outer side of the positioning column (677), a spring (679) is sleeved on the outer side of the positioning column (677), and the upper end of the spring (679) is fixedly connected to the slide cylinder (678).

3. According to claim 1, a special-shaped beam butt welding tool for green building construction is characterized by: The travel limiting mechanism (66) comprises a ratchet wheel (661) fixedly connected to the outside of the rotating shaft (64); the rear end of the moving frame (62) is fixedly connected to a connecting block (662); one side of the connecting block (662) is rotatably connected to a V-shaped hook (663); one end of the V-shaped hook (663) is provided with a hook; the other end of the V-shaped hook (663) is rotatably connected to a connecting rod (664); the rear end of the moving frame (62) is fixedly connected to a first U-shaped plate (665); the inner side of the first U-shaped plate (665) is rotatably connected to a pressure rod (666); the upper end of the pressure rod (666) is rotatably connected to a second U-shaped plate (667); and the second U-shaped plate (667) is fixedly connected to an arc plate (675).

4. The special-shaped beam butt welding tool for green building construction according to claim 3 is characterized by: The second rotating cylinder (6611) is fixedly connected to both sides of the first U-shaped plate (665), and the inner side of the second rotating cylinder (6611) is rotatably connected to a first connecting shaft (6612). The first connecting shaft (6612) passes through the first U-shaped plate (665) and is fixedly connected to the pressure rod (666). A second spring sheet (6613) is arranged on the outer side of the first connecting shaft (6612).

5. The butt welding tool for special-shaped beams for green building construction according to claim 4, characterized in that: The pressure rod (666) is fixedly connected to fixed shafts (668) on both sides, and the outer side of the fixed shaft (668) is rotatably connected to a first rotating drum (669), the first rotating drum (669) is fixedly connected to the connecting rod (664), and a first elastic sheet (6610) is provided on the outer side of the fixed shaft (668), and the first elastic sheet (6610) is located on the inner side of the first rotating drum (669).

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