Restraining bed

Abstract

The utility model discloses a binding bed which comprises a bed board, protection boards are fixedly connected to the two ends of the upper end of the bed board, supporting columns are fixedly connected to the four end corners of the lower end of the bed board, a headrest is fixedly connected to the middle of one end of the upper end of the bed board, and fixing rods are fixedly connected to the two sides of the bed board. And a plurality of binding mechanisms are arranged at the upper end of the bed board and located on the two fixing rods. According to the binding bed provided by the utility model, through the structural matching design of the fixing rod, the first connecting mechanism and the second connecting mechanism, when patients with different heights and weights need to be bound, the position and contraction of the binding bandage can be adjusted through the matching of the fixing rod, the first connecting mechanism and the second connecting mechanism; therefore, the practicability of the binding device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of restraint beds, in particular to a restraint bed. Background Art

[0002] Psychiatry is a department in the hospital that treats neurological diseases that are mainly manifested in behavioral and psychological disorders. Psychiatric patients are usually accompanied by emotional excitement, enthusiasm and impulsive behavior, and therefore their behavior needs to be restrained.

[0003] Usually, when psychiatric medical staff are caring for or treating patients, they will use special restraint devices to restrain and fix the patients to prevent the patients from engaging in dangerous behaviors due to impulse during treatment. However, most of the restraint devices in the prior art cannot be adjusted, making it impossible to restrain patients of different heights and weights, thereby reducing the practicality of the restraint devices.

[0004] Therefore, it is necessary to propose a restraint bed to solve the above-mentioned technical problems and provide a new technical solution. Utility Model Content

[0005] Based on this, it is necessary to provide a restraint bed to address the above-mentioned technical problems. Through the structural coordination design of the fixed rod, the first connecting mechanism, and the second connecting mechanism, when it is necessary to restrain patients of different heights and weights, the position and contraction of the restraint straps can be adjusted through the coordination of the fixed rod, the first connecting mechanism, and the second connecting mechanism, thereby improving the practicability of the restraint device.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model relates to a restraint bed, which is used in psychiatric department.

[0008] The restraint bed specifically includes a protective plate and a bed board, both ends of the upper end of the bed board are fixedly connected to the protective plate, the four end corners of the lower end of the bed board are fixedly connected to support columns, the middle of one end of the upper end of the bed board is fixedly connected to a headrest, both sides of the bed board are fixedly connected to fixing rods, and a plurality of restraint mechanisms are arranged on the upper end of the bed board and on the two fixing rods.

[0009] As a preferred embodiment of the restraint bed provided by the utility model, the restraint mechanism includes a restraint strap, one end of the restraint strap is fixedly connected to the third connecting block, the lower end of the third connecting block is fixedly connected to the first plug-in block, a first plug-in groove is provided on one side of the first plug-in block, a first connecting mechanism is also provided at the lower end of the third connecting block, a first limiting mechanism is provided on one side of the first connecting mechanism, and a second connecting mechanism is provided at the end of the restraint strap away from the third connecting block.

[0010] As a preferred embodiment of the restraint bed provided by the utility model, the first connecting mechanism includes a first connecting block, the first connecting block is located on one side of the bed board and corresponds to one of the fixed rods, the first connecting block is fixedly connected to a first sliding block on a side close to the fixed rod, the fixed rod is provided with a first sliding groove at a position corresponding to the first sliding block, the first sliding block is slidably connected to the first sliding groove, a second plugging groove is provided at an upper end of the first connecting block and at a position corresponding to the first plug-in block, the first plug-in block is plug-connected to the second plug-in groove, a third plug-in groove is provided on a side of the first connecting block away from the first sliding block and at a position corresponding to the first plug-in groove, the third plug-in groove is connected to the second plug-in groove, a first connecting column is fixedly connected to the outer side of the first connecting block and at a position corresponding to the third plug-in groove, and the first connecting The connecting post is provided with a first slot corresponding to the third slot at one end near the third slot, and a second plug block is slidably connected to the inside of the first slot, and one end of the second plug block is plugged into the first slot and the third slot, and the second plug block is fixedly connected to both sides of one end of the first slot, and a second slide block is provided at both sides of the first slot and at positions corresponding to the second slide, the second slide block is slidably connected to the second slide slot, and the end of the second slide block away from the third slot is fixedly connected to a spring, and the spring is fixedly connected to the inside of the second slide slot, and a round rod is fixedly connected to the middle part of one end of the second plug block away from the third slot, and one end of the round rod away from the second plug block passes through the inside of the first slot and extends to the outside of the first connecting post and is fixedly connected to a pull block, and the round rod is slidably connected to the first connecting post.

[0011] As a preferred embodiment of the restraint bed provided by the utility model, the first limiting mechanism includes a fixed block, the fixed block is fixedly connected to the first connecting block, a first rotating handle is provided on the side of the fixed block away from the fixed rod, a first rotating handle is fixedly connected to the side of the first rotating handle close to the fixed block, an end of the first screw away from the first rotating handle extends through the fixed block to the outer side of the fixed block away from the first rotating handle and is rotatably connected to the first extrusion block, and the first screw is threadedly connected to the fixed block.

[0012] As a preferred embodiment of the restraint bed provided by the utility model, the second connecting mechanism includes a second connecting block, the second connecting block corresponds to the fixed rod on the other side of the bed board, the second connecting block is fixedly connected to a third slider on the side close to the fixed rod, the third slider is slidably connected to the first sliding groove provided on the fixed rod on the same side, a fourth plug-in groove is provided at the upper end of the second connecting block, the fourth plug-in groove runs through the upper and lower ends of the second connecting block, the end of the restraint strap away from the third connecting block is plug-connected to the fourth plug-in groove, and a second limiting mechanism is provided on the side of the second connecting block away from the third slider.

[0013] As a preferred embodiment of the restraint bed provided by the utility model, the second limiting mechanism includes a second connecting column, a second notch is provided at one end of the second connecting column close to the second connecting block, the second connecting column is fixedly connected to the second connecting block, a fifth plugging slot is provided at a side of the second connecting block close to the second connecting column and at a position corresponding to the second notch, the fifth plugging slot is communicated with the fourth plugging slot, a second extrusion block is slidably connected to the inside of the second notch, the second extrusion block is plug-connected to the fifth plugging slot, a second screw is rotatably connected to the middle part of one end of the second extrusion block away from the fifth plugging slot, an end of the second screw away from the second extrusion block passes through the second notch and extends to the outside of the second connecting column and is fixedly connected to a second handle, and the second screw is threadedly connected to the second connecting column.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides a restraint bed, which is designed by the structural coordination of a fixing rod, a first connecting mechanism and a second connecting mechanism, so that when it is necessary to restrain patients of different heights and weights, the position and contraction of the restraint belt can be adjusted by the coordination of the fixing rod, the first connecting mechanism and the second connecting mechanism, thereby improving the practicability of the restraint device.

[0016] The utility model provides a restraint bed, which, through the structural design of the second limiting mechanism, can fix the restraint belt inside the fourth plug-in slot through the structural design of the second limiting mechanism after the tightening of the restraint belt is adjusted, and then the patient on the bed board can be restrained by the tightened restraint belt, thereby improving the practicality of the restraint device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the overall structure of a restraint bed provided by the utility model;

[0019] Figure 2 A structural schematic diagram of a restraint mechanism of a restraint bed provided by the utility model;

[0020] Figure 3 A structural schematic diagram of a first connecting mechanism of a restraint bed provided by the utility model;

[0021] Figure 4 A schematic diagram of the structure of a first limiting mechanism of a restraint bed provided by the utility model;

[0022] Figure 5 A schematic diagram of the structure of a second connection mechanism of a restraint bed provided by the utility model;

[0023] Figure 6 The utility model provides a structural schematic diagram of the second limiting mechanism of the restraint bed.

[0024] The markings in the figure are as follows:

[0025] 1. Bed board; 2. Protective plate; 3. Headrest; 4. Support column; 5. Fixing rod; 6. First slide slot; 7. Restraint mechanism; 8. Restraint strap; 9. Third connecting block; 10. First plug-in block; 11. First plug-in slot; 12. First connecting mechanism; 13. First limit mechanism; 14. First connecting block; 15. First slider; 16. Second plug-in slot; 17. Third plug-in slot; 18. First connecting column; 19. Second slide slot; 20. Spring Spring; 21, second slider; 22, second plug-in block; 23, round rod; 24, pull block; 25, fixed block; 26, first screw rod; 27, first extrusion block; 28, first handle; 29, second connecting block; 30, third slider; 31, fourth plug-in slot; 32, second limit mechanism; 33, fifth plug-in slot; 34, second connecting column; 35, second screw rod; 36, second extrusion block; 37, second handle; 38, second connecting mechanism. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0027] As described in the background technology, psychiatric medical staff usually use special restraint devices to restrain and fix patients during the care or treatment of patients to prevent patients from engaging in dangerous behaviors due to impulse during treatment. However, most of the restraint devices in the prior art cannot be adjusted, making it impossible to restrain patients of different heights and weights, thereby reducing the practicality of the restraint devices.

[0028] In order to solve this technical problem, the utility model provides a restraint bed, which is applied to psychiatry.

[0029] Specifically, please refer to Figure 1 A restraint bed specifically includes a bed board 1, both ends of the upper end of the bed board 1 are fixedly connected with protective plates 2, the four end corners of the lower end of the bed board 1 are fixedly connected with support columns 4, the middle part of one end of the upper end of the bed board 1 is fixedly connected with a headrest 3, both sides of the bed board 1 are fixedly connected with fixing rods 5, and a plurality of restraint mechanisms 7 are arranged on the upper end of the bed board 1 and on the two fixing rods 5.

[0030] The utility model provides a restraint bed, which is designed by the structural coordination of a fixing rod 5, a first connecting mechanism 12, and a second connecting mechanism 38. When it is necessary to restrain patients of different heights and weights, the position and contraction of the restraint belt 8 can be adjusted by the coordination of the fixing rod 5, the first connecting mechanism 12, and the second connecting mechanism 38, thereby improving the practicability of the restraint device.

[0031] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0032] Embodiment 1:

[0033] Please refer to Figure 1-Figure 4 A restraint bed comprises a bed board 1, both ends of the upper end of the bed board 1 are fixedly connected with protective plates 2, the four end corners of the lower end of the bed board 1 are fixedly connected with support columns 4, the middle part of one end of the upper end of the bed board 1 is fixedly connected with a headrest 3, both sides of the bed board 1 are fixedly connected with fixing rods 5, and a plurality of restraint mechanisms 7 are arranged on the upper end of the bed board 1 and on the two fixing rods 5.

[0034] Through the above structural design, it can be known that the bed board 1 can carry the patient, the support column 4 can support the bed board 1, and the multiple restraint mechanisms 7 on the bed board 1 can restrain different body parts of the patient, and the restraint mechanism 7 can move on the fixed rod 5 through the cooperation between the restraint mechanism 7 and the fixed rod 5.

[0035] Specifically, the restraining mechanism 7 includes a restraining strap 8, one end of the restraining strap 8 is fixedly connected to a third connecting block 9, the lower end of the third connecting block 9 is fixedly connected to a first plug-in block 10, a first plug-in groove 11 is provided on one side of the first plug-in block 10, a first connecting mechanism 12 is also provided at the lower end of the third connecting block 9, a first limiting mechanism 13 is provided on one side of the first connecting mechanism 12, and a second connecting mechanism 38 is provided at the end of the restraining strap 8 away from the third connecting block 9.

[0036] Through the above structural design, it can be known that the structural cooperation between the second connecting mechanism 38 and the first connecting mechanism 12 can drive the restraining strap 8 to move in position. At the same time, the cooperation between the second connecting mechanism 38 and the first connecting mechanism 12 can make the restraining strap 8 quickly disassembled and the tightening of the restraining strap 8 can be adjusted. The moving position of the first connecting mechanism 12 can be limited by the first limiting mechanism 13.

[0037] Specifically, the first connecting mechanism 12 includes a first connecting block 14, which is located on one side of the bed board 1 and corresponds to one of the fixed rods 5. A first slider 15 is fixedly connected to the side of the first connecting block 14 close to the fixed rod 5. A first slide groove 6 is provided at a position of the fixed rod 5 corresponding to the first slider 15. The first slider 15 is slidably connected to the first slide groove 6. A second plug-in groove 16 is provided at the upper end of the first connecting block 14 and at a position corresponding to the first plug-in block 10. The first plug-in block 10 is plug-connected to the second plug-in groove 16. A third plug-in groove 17 is provided on the side of the first connecting block 14 away from the first slider 15 and at a position corresponding to the first plug-in groove 11. The third plug-in groove 17 is connected to the second plug-in groove 16. A first connecting column 18 is fixedly connected to the outer side of the first connecting block 14 and at a position corresponding to the third plug-in groove 17. One end of the first connecting column 18 close to the third plug-in groove 17 A first slot corresponding to the third plug-in slot 17 is provided, and a second plug-in block 22 is slidably connected inside the first slot, one end of the second plug-in block 22 is plugged into the first plug-in slot 11 and the third plug-in slot 17, and second sliders 21 are fixedly connected to both sides of the second plug-in block 22 at one end inside the first slot, and second slide grooves 19 are provided on both sides of the first slot and at positions corresponding to the second slider 21, and the second slider 21 is slidably connected to the second slide groove 19, and a spring 20 is fixedly connected to one end of the second slider 21 away from the third plug-in slot 17, and the spring 20 is fixedly connected to the inside of the second slide groove 19, and a round rod 23 is fixedly connected to the middle part of one end of the second plug-in block 22 away from the third plug-in slot 17, and one end of the round rod 23 away from the second plug-in block 22 passes through the inside of the first slot and extends to the outside of the first connecting column 18 and is fixedly connected to a pull block 24, and the round rod 23 is slidably connected to the first connecting column 18.

[0038] Through the above structural design, it can be known that when the restraining strap 8 needs to be removed from the first connecting block 14, the pull block 24 can be pulled toward the end away from the first connecting block 14, so that the pull block 24 drives the second plug-in block 22 to move toward the inside of the first notch through the round rod 23, so that the second plug-in block 22 is separated from the plug-in of the first plug-in slot 11. When the second plug-in block 22 moves toward the inside of the first notch, the second plug-in block 22 drives the second sliders 21 on both sides to move closer to the position of the pull block 24 in the second slide slot 19, so that the second slider 21 squeezes the elastic inside the second slide slot 19 The spring 20 stores the squeezing force. After the second plug-in block 22 is completely separated from the first plug-in slot 11, the third connecting block 9 can be pulled upward, so that the third connecting block 9 drives the first plug-in block 10 to be pulled out from the inside of the second plug-in slot 16, thereby completing the connection and disassembly of the support column 4 and the first connecting block 14. After the first plug-in block 10 is pulled out, the spring 20 releases the stored force to push the second slider 21 and the second plug-in block 22 to reset. By pushing the first connecting block 14, the first slider 15 can be moved inside the first slide slot 6, thereby moving the position of the first connecting block 14.

[0039] Specifically, the first limiting mechanism 13 includes a fixed block 25, which is fixedly connected to the first connecting block 14, and a first rotating handle 28 is provided on the side of the fixed block 25 away from the fixed rod 5. A first screw 26 is fixedly connected to the side of the first rotating handle 28 close to the fixed block 25, and one end of the first screw 26 away from the first rotating handle 28 extends through the fixed block 25 to the outer side of the side of the fixed block 25 away from the first rotating handle 28 and is rotatably connected to the first extrusion block 27, and the first screw 26 is threadedly connected to the fixed block 25.

[0040] Through the above structural design, it can be known that when the first connecting block 14 is moved to the specified position, the first rotating handle 28 can be rotated, and then the first rotating handle 28 can drive the first screw 26 to rotate on the fixed block 25. Through the connection between the first screw 26 and the fixed block 25, when the first screw 26 rotates, the first screw 26 drives the first extrusion block 27 to extrude the inside of the first slide groove 6. The extrusion of the first extrusion block 27 on the inside of the first slide groove 6 can limit the movement of the first connecting block 14.

[0041] Embodiment 2:

[0042] The restraint bed provided in Example 1 is further optimized, specifically, as follows Figure 1 , Figure 5 , Figure 6As shown, the second connecting mechanism 38 includes a second connecting block 29, and the second connecting block 29 corresponds to the fixed rod 5 on the other side of the bed board 1. The second connecting block 29 is fixedly connected to the side close to the fixed rod 5 with a third slider 30, and the third slider 30 is slidably connected to the first slide groove 6 opened on the fixed rod 5 on the same side. A fourth plug-in groove 31 is opened at the upper end of the second connecting block 29, and the fourth plug-in groove 31 runs through the upper and lower ends of the second connecting block 29. The end of the restraining strap 8 away from the third connecting block 9 is plug-connected with the fourth plug-in groove 31, and a second limiting mechanism 32 is provided on the side of the second connecting block 29 away from the third slider 30.

[0043] Through the above structural design, it can be known that the end of the restraint strap 8 away from the third connecting block 9 is plugged into the fourth plug-in slot 31, and then the tightness of the restraint strap 8 on the patient on the bed board 1 can be adjusted by plugging the restraint strap 8 into the fourth plug-in slot 31, and the restraint strap 8 inside the fourth plug-in slot 31 can be fixed by the second limiting mechanism 32.

[0044] Specifically, the second limiting mechanism 32 includes a second connecting column 34, a second notch is provided at one end of the second connecting column 34 close to the second connecting block 29, the second connecting column 34 is fixedly connected to the second connecting block 29, a fifth plugging slot 33 is provided on one side of the second connecting block 29 close to the second connecting column 34 and at a position corresponding to the second notch, the fifth plugging slot 33 is communicated with the fourth plugging slot 31, a second extrusion block 36 is slidably connected inside the second notch, the second extrusion block 36 is plug-connected to the fifth plugging slot 33, a second screw 35 is rotatably connected to the middle part of one end of the second extrusion block 36 away from the fifth plugging slot 33, one end of the second screw 35 away from the second extrusion block 36 extends from the inside of the second notch to the outside of the second connecting column 34 and is fixedly connected to a second rotating handle 37, and the second screw 35 is threadedly connected to the second connecting column 34.

[0045] Through the above-mentioned structural design, it can be known that after the restraining strap 8 is plugged into the fourth plug-in slot 31, when the restraining strap 8 needs to be fixed inside the fourth plug-in slot 31, the second turning handle 37 can be rotated, and when the second turning handle 37 is rotated, the second turning handle 37 drives the second screw 35 to rotate. Through the rotation of the second screw 35, the second screw 35 can drive the second extrusion block 36 to clamp the restraining strap 8 inside the fourth plug-in slot 31 from the position of the fifth plug-in slot 33. Through the clamping of the restraining strap 8 by the second extrusion block 36, the end of the restraining strap 8 away from the third connecting block 9 can be fixed inside the fourth plug-in slot 31.

Claims

1. A restraint bed, characterized in that: The invention comprises a bed board (1), wherein both ends of the upper end of the bed board (1) are fixedly connected to protective plates (2), the four end corners of the lower end of the bed board (1) are fixedly connected to support columns (4), the middle part of one end of the upper end of the bed board (1) is fixedly connected to a headrest (3), both sides of the bed board (1) are fixedly connected to fixing rods (5), and a plurality of restraint mechanisms (7) are arranged at the upper end of the bed board (1) and on the two fixing rods (5); The restraining mechanism (7) comprises a restraining strap (8), one end of the restraining strap (8) is fixedly connected to a third connecting block (9), the lower end of the third connecting block (9) is fixedly connected to a first plug-in block (10), one side of the first plug-in block (10) is provided with a first plug-in slot (11), the lower end of the third connecting block (9) is also provided with a first connecting mechanism (12), one side of the first connecting mechanism (12) is provided with a first limiting mechanism (13), and the end of the restraining strap (8) away from the third connecting block (9) is provided with a second connecting mechanism (38).

2. A restraint bed according to claim 1, characterized in that: The first connecting mechanism (12) comprises a first connecting block (14), the first connecting block (14) being located on one side of the bed board (1) and corresponding to one of the fixing rods (5), a first sliding block (15) being fixedly connected to a side of the first connecting block (14) close to the fixing rod (5), a first sliding groove (6) being provided at a position of the fixing rod (5) corresponding to the first sliding groove (15), the first sliding block (15) being slidably connected to the first sliding groove (6), and a first connecting block (14) being provided at an upper end thereof and at a position corresponding to the first plug-in block (10). A second plug-in slot (16) is provided, the first plug-in block (10) is plug-connected with the second plug-in slot (16), a third plug-in slot (17) is provided on the first connection block (14) at a position away from the first slider (15) and corresponding to the first plug-in slot (11), the third plug-in slot (17) is connected to the second plug-in slot (16), a first connection column (18) is fixedly connected to the outer side of the first connection block (14) and at a position corresponding to the third plug-in slot (17), the first connection column (18) is close to the third plug-in slot (17) A first slot corresponding to the third plug-in slot (17) is provided at one end of the first slot, a second plug-in block (22) is slidably connected inside the first slot, one end of the second plug-in block (22) is plug-connected with the first plug-in slot (11) and the third plug-in slot (17), both sides of the second plug-in block (22) located at one end inside the first slot are fixedly connected with second sliders (21), both sides of the first slot inside and at positions corresponding to the second sliders (21) are provided with second slide grooves (19), the second sliders (21) and the second slide grooves (19) are connected to each other. Sliding connection, the end of the second sliding block (21) away from the third plug-in slot (17) is fixedly connected to a spring (20), and the spring (20) is fixedly connected to the inside of the second sliding slot (19); the middle part of the end of the second plug-in block (22) away from the third plug-in slot (17) is fixedly connected to a round rod (23); the end of the round rod (23) away from the second plug-in block (22) extends from the inside of the first slot to the outside of the first connecting column (18) and is fixedly connected to a pull block (24); the round rod (23) is slidably connected to the first connecting column (18).

3. A restraint bed according to claim 2, characterized in that: The first limiting mechanism (13) comprises a fixed block (25), wherein the fixed block (25) is fixedly connected to the first connecting block (14); a first rotating handle (28) is arranged on a side of the fixed block (25) away from the fixed rod (5); a first screw rod (26) is fixedly connected to a side of the first rotating handle (28) close to the fixed block (25); an end of the first screw rod (26) away from the first rotating handle (28) passes through the fixed block (25) and extends to the outer side of a side of the fixed block (25) away from the first rotating handle (28) and is rotatably connected to a first extrusion block (27); and the first screw rod (26) is threadedly connected to the fixed block (25).

4. A restraint bed according to claim 1, characterized in that: The second connecting mechanism (38) comprises a second connecting block (29), the second connecting block (29) corresponds to the fixed rod (5) on the other side of the bed board (1), a third sliding block (30) is fixedly connected to the side of the second connecting block (29) close to the fixed rod (5), the third sliding block (30) is slidably connected to the first sliding groove (6) provided on the fixed rod (5) on the same side, a fourth plug-in groove (31) is provided at the upper end of the second connecting block (29), the fourth plug-in groove (31) runs through the upper and lower ends of the second connecting block (29), the end of the restraining strap (8) away from the third connecting block (9) is plug-connected to the fourth plug-in groove (31), and a second limiting mechanism (32) is provided on the side of the second connecting block (29) away from the third sliding block (30).

5. A restraint bed according to claim 4, characterized in that: The second limiting mechanism (32) comprises a second connecting column (34), a second notch is provided at one end of the second connecting column (34) close to the second connecting block (29), the second connecting column (34) is fixedly connected to the second connecting block (29), a fifth plugging groove (33) is provided at a position corresponding to the second notch on one side of the second connecting block (29) close to the second connecting column (34), the fifth plugging groove (33) is connected to the fourth plugging groove (31), and the interior of the second notch A second extrusion block (36) is slidably connected, the second extrusion block (36) is plug-connected with the fifth plug-in slot (33), a second screw rod (35) is rotatably connected to the middle of one end of the second extrusion block (36) away from the fifth plug-in slot (33), the end of the second screw rod (35) away from the second extrusion block (36) passes through the inside of the second slot and extends to the outside of the second connecting column (34) and is fixedly connected with a second rotating handle (37), and the second screw rod (35) is threadedly connected to the second connecting column (34).

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