Novel limb bracket

Abstract

The novel limb bracket comprises a base, a telescopic rod is arranged in the middle of the upper end of the base, the bottom of the telescopic rod is fixedly connected with the base, a bearing seat is arranged at the telescopic end of the upper end of the telescopic rod, the middle of the lower end of the bearing seat is fixedly connected with the telescopic end of the upper end of the telescopic rod, and a second notch is formed in the middle of the upper end of the bearing seat. An adjusting mechanism is arranged in the second notch, supporting mechanisms are arranged at the two ends of the upper end of the bearing seat, and the two supporting mechanisms are symmetrically arranged. According to the novel limb bracket, through the structural matching design of the two supporting mechanisms, when limbs of a puerpera are lifted, the rotating angle and position of the lifting base can be adjusted according to the actual situation, the limbs of the puerpera can be lifted according to the requirements of the puerpera, and then the practicability of the whole device is improved.

Description

Technical Field

[0001] This utility model relates to the field of limb support technology, and in particular to a novel limb support. Background Technology

[0002] The main purpose of leg supports during childbirth is to provide comfortable support for mothers during labor, reduce fatigue caused by maintaining the same posture for a long time, and help relieve pressure on the legs and lower back. During labor, leg supports can help keep the mother's legs in a more comfortable and relaxed position, promote blood circulation, and reduce the occurrence of numbness or pain in the limbs.

[0003] Most existing support frames are fixed structures that can only support the limbs and cannot be adjusted in terms of the position and angle of support according to the needs of different mothers, thus reducing the overall practicality of the device.

[0004] Therefore, a new type of limb support is needed to provide a new technical solution to address the aforementioned technical problems. Utility Model Content

[0005] Therefore, it is necessary to provide a new type of limb support to address the above-mentioned technical problems. Through the structural design of two support mechanisms, the rotation angle and position of the support seat can be adjusted according to the actual situation when supporting the mother's limbs, so that the limbs can be supported according to the mother's needs, thereby improving the practicality of the overall device.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A new type of limb support for postpartum women.

[0008] The novel limb support specifically includes a protective plate and a base. A telescopic rod is provided in the middle of the upper end of the base. The bottom of the telescopic rod is fixedly connected to the base. A support seat is provided at the telescopic end of the upper end of the telescopic rod. The middle of the lower end of the support seat is fixedly connected to the telescopic end of the upper end of the telescopic rod. A second slot is opened in the middle of the upper end of the support seat. An adjustment mechanism is provided inside the second slot. Support mechanisms are provided at both ends of the upper end of the support seat. The two support mechanisms are symmetrically arranged.

[0009] In a preferred embodiment of the novel limb support provided by this utility model, the support mechanism includes a support plate located at the upper end of a support seat. A first slider is fixedly connected to the lower end of the support plate, and the first slider is slidably connected to a second slot. The first slider is connected to an adjustment mechanism. A support seat is provided at the upper end of the support plate. A connecting column is fixedly connected to the middle of the lower end of the support seat. The end of the connecting column away from the support seat extends into the interior of the support plate and is fixedly connected to a turntable. A first slot is opened inside the support plate. The turntable is located in the first slot opened inside the support plate and is rotatably connected to the first slot. The connecting column is rotatably connected to the support plate. Multiple insertion slots are arranged in a circumferential array on the periphery of the turntable. A first limiting mechanism is provided at one end of the support plate, and a clamping mechanism is provided at the upper end of the support seat.

[0010] In a preferred embodiment of the novel limb support provided by this utility model, the first limiting mechanism includes a pull block located on the outer side of one end of the support plate. A first insertion rod is fixedly connected to the end of the pull block near the support plate. The first insertion rod extends through the support plate to the inside of a first slot and is inserted into a slot on the turntable. The first insertion rod is slidably connected to the support plate. Second sliders are fixedly connected to both sides of the first insertion rod located inside the support plate. A first sliding groove is provided inside the support plate at a position corresponding to the second slider. The second slider is slidably connected to the first sliding groove. A first spring is provided on the outer side of the first insertion rod at a position between the pull block and the support plate. One end of the first spring is fixedly connected to the pull block, and the other end of the first spring is fixedly connected to the support plate.

[0011] In a preferred embodiment of the novel limb support provided by this utility model, the clamping mechanism includes a C-shaped frame located at the upper end of the support seat. A first support plate is rotatably connected to the lower end of the C-shaped frame away from another C-shaped frame. The lower end of the first support plate is fixedly connected to one side of the upper end of the support seat. A second support plate is provided on the other side of the lower end of the C-shaped frame. The lower end of the second support plate is fixedly connected to the other side of the upper end of the support seat. A plug-in plate is fixedly connected to the lower end of the C-shaped frame located on one side of the second support plate. A third slot is provided at the upper end of the second support plate and at a position corresponding to the plug-in plate. The plug-in plate is plugged into the third slot. A clamping assembly is provided in the middle of the C-shaped frame. A second limiting mechanism is provided at the position of the second support plate away from the first support plate and at a position corresponding to the third slot.

[0012] In a preferred embodiment of the novel limb support provided by this utility model, the second limiting mechanism includes a pull rod. The pull rod is located on the side of the second support plate away from the first support plate and corresponds to the third slot. Both ends of the pull rod away from the second support plate are provided with first limiting blocks. A first guide rod is fixedly connected to the end of the first limiting block near the second support plate. The end of the first guide rod away from the first limiting block passes through the pull rod and is fixedly connected to the second support plate. The pull rod and the first guide rod are slidably connected. A second spring is provided on the outer side of the first guide rod and at a position between the pull rod and the second support plate. One end of the second spring is fixedly connected to the pull rod, and the other end of the second spring is fixedly connected to the second support plate. A second insertion rod is fixedly connected to the middle part of the pull rod near the second support plate. The end of the second insertion rod away from the pull rod passes through the second support plate and extends into the interior of the third slot to be inserted into a insertion plate. The upper end of the second insertion rod inserted into the insertion plate is inclined.

[0013] In a preferred embodiment of the novel limb support provided by this utility model, the clamping assembly includes a clamping plate located at the lower end of the C-frame and between the first support plate and the second support plate. A bearing is fixedly connected to the middle of the upper end of the clamping plate, and a screw is fixedly connected to the upper end of the bearing. The upper end of the screw passes through the C-frame and extends to the outer side of the upper end of the C-frame, and is fixedly connected to a rotating handle. The screw is threadedly connected to the C-frame. Second guide rods are fixedly connected to both sides of the upper end of the clamping plate. The upper end of the second guide rod passes through the C-frame and extends to the outer side of the upper end of the C-frame, and is fixedly connected to a second limiting block. The second guide rod is slidably connected to the C-frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model provides a novel limb support, which, through the structural cooperation of two support mechanisms, allows for adjustment of the rotation angle and position of the support seat when supporting the limbs of a postpartum woman, according to the actual situation. This enables the support to be tailored to the needs of the postpartum woman, thereby improving the overall practicality of the device.

[0016] This utility model provides a novel limb support. Through the structural design of the clamping component, after the mother's limb is placed on the support seat, the clamping component can clamp and limit the mother's limb on the support seat to prevent movement during childbirth, thereby improving the stability of limb support for the patient. Attached Figure Description

[0017] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of a novel limb support provided by this utility model;

[0019] Figure 2 A schematic diagram of the structure of a novel limb support adjustment mechanism provided by this utility model;

[0020] Figure 3 A structural schematic diagram of a novel limb support mechanism provided by this utility model;

[0021] Figure 4 A schematic diagram of the structure of a novel limb support turntable and insertion slot provided by this utility model;

[0022] Figure 5 A schematic diagram of the first limiting mechanism of a novel limb support provided by this utility model;

[0023] Figure 6 A schematic diagram of the structure of a novel limb support clamping mechanism provided by this utility model;

[0024] Figure 7 A schematic diagram of the structure of a novel limb support second limiting mechanism provided by this utility model;

[0025] Figure 8 This is a structural schematic diagram of a novel limb support clamping assembly provided by this utility model.

[0026] The markings in the diagram are explained as follows:

[0027] 1. Base; 2. Telescopic rod; 3. Bearing seat; 4. Second slot; 5. Support mechanism; 6. Adjustment mechanism; 7. Bearing plate; 8. First slider; 9. Lifting seat; 10. Connecting column; 11. Clamping mechanism; 12. First limiting mechanism; 13. Turntable; 14. Insertion slot; 15. First insertion rod; 16. Second slider; 17. First slide groove; 18. Pull block; 19. First spring; 20. C-shaped frame; 21. First support plate; 22. Second support plate; 23. Insertion plate; 24. Third slot; 25. Second limiting mechanism; 26. Pull rod; 27. Second insertion rod; 28. First limiting block; 29. ​​First guide rod; 30. Second spring; 31. Clamping plate; 32. Bearing; 33. Screw; 34. Rotary handle; 35. Second guide rod; 36. Second limiting block; 37. Clamping assembly. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0029] As described in the background section, most existing support structures are fixed structures that can only support limbs and cannot adjust the position and angle of support according to the needs of different mothers, thus reducing the overall practicality of the device.

[0030] To solve this technical problem, this utility model provides a novel limb support for postpartum women.

[0031] For details, please refer to Figure 1 , Figure 2 A novel limb support specifically includes a base 1, a telescopic rod 2 is provided at the middle of the upper end of the base 1, the bottom of the telescopic rod 2 is fixedly connected to the base 1, a support seat 3 is provided at the telescopic end of the upper end of the telescopic rod 2, the middle of the lower end of the support seat 3 is fixedly connected to the telescopic end of the upper end of the telescopic rod 2, a second slot 4 is provided at the middle of the upper end of the support seat 3, an adjustment mechanism 6 is provided inside the second slot 4, and support mechanisms 5 are provided at both ends of the upper end of the support seat 3, and the two support mechanisms 5 are symmetrically arranged.

[0032] This utility model provides a novel limb support. Through the structural cooperation design of two support mechanisms 5, when supporting the limbs of a postpartum woman, the rotation angle and position of the support seat 9 can be adjusted according to the actual situation, so that the limbs of the postpartum woman can be supported according to her needs, thereby improving the practicality of the overall device.

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] Example 1:

[0035] Please refer to Figures 1-7A novel limb support includes a base 1, a telescopic rod 2 at the middle of the upper end of the base 1, the bottom of the telescopic rod 2 being fixedly connected to the base 1, a support seat 3 at the telescopic end of the upper end of the telescopic rod 2, the middle of the lower end of the support seat 3 being fixedly connected to the telescopic end of the upper end of the telescopic rod 2, a second slot 4 at the middle of the upper end of the support seat 3, an adjustment mechanism 6 inside the second slot 4, and support mechanisms 5 at both ends of the upper end of the support seat 3, the two support mechanisms 5 being symmetrically arranged.

[0036] Through the above structural design, it can be seen that the base 1 can support the support seat 3, the telescopic rod 2 can adjust the height of the support seat 3, and the height adjustment of the support seat 3 can adjust the lifting height of the mother's limbs by the two support mechanisms 5. The two support mechanisms 5 can lift and limit the mother's limbs according to the needs of the mother.

[0037] Specifically, the support mechanism 5 includes a support plate 7, which is located at the upper end of the support seat 3. A first slider 8 is fixedly connected to the lower end of the support plate 7. The first slider 8 is slidably connected to the second slot 4 and is connected to the adjustment mechanism 6. A lifting seat 9 is provided at the upper end of the support plate 7. A connecting column 10 is fixedly connected to the middle of the lower end of the lifting seat 9. The end of the connecting column 10 away from the lifting seat 9 extends into the interior of the support plate 7 and is fixedly connected to a turntable 13. A first slot is opened inside the support plate 7. The turntable 13 is located in the first slot opened inside the support plate 7 and is rotatably connected to the first slot. The connecting column 10 is rotatably connected to the support plate 7. Multiple insertion slots 14 are opened in a circumferential array on the periphery of the turntable 13. A first limiting mechanism 12 is provided at one end of the support plate 7, and a clamping mechanism 11 is provided at the upper end of the lifting seat 9.

[0038] Through the above structural design, it can be seen that by connecting the first slider 8 with the adjustment mechanism 6, the distance between the two support mechanisms 5 can be adjusted by the adjustment mechanism 6. The lifting seat 9 can lift the limbs of the mother. By rotating the lifting seat 9, the lifting seat 9 can drive the turntable 13 to rotate inside the first slot through the connecting column 10. The first limiting mechanism 12 can limit the rotation of the turntable 13, thereby limiting the rotation of the lifting seat 9. The clamping mechanism 11 can clamp and limit the limbs of the mother on the lifting seat 9.

[0039] Specifically, the first limiting mechanism 12 includes a pull block 18, which is located on the outer side of one end of the support plate 7. A first insertion rod 15 is fixedly connected to the end of the pull block 18 near the support plate 7. The first insertion rod 15 extends through the support plate 7 to the inside of the first slot and is inserted into the insertion slot 14 opened on the turntable 13. The first insertion rod 15 is slidably connected to the support plate 7. In order to prevent the first insertion rod 15 from falling out of the support plate 7, a second slider 16 is fixedly connected to both sides of the end of the first insertion rod 15 inside the support plate 7. A first sliding groove 17 is opened inside the support plate 7 at the position corresponding to the second slider 16. The second slider 16 is slidably connected to the first sliding groove 17. A first spring 19 is provided on the outer side of the first insertion rod 15 at the position between the pull block 18 and the support plate 7. One end of the first spring 19 is fixedly connected to the pull block 18, and the other end of the first spring 19 is fixedly connected to the support plate 7.

[0040] Through the above structural design, it can be seen that when the lifting seat 9 needs to be rotated and adjusted, the pull block 18 can be pulled away from the bearing plate 7, thereby pulling the first insertion rod 15. When the first insertion rod 15 is pulled, the insertion of the first insertion rod 15 and the insertion groove 14 is separated. At the same time, the pull block 18 pulls the first spring 19, thereby storing the pulling force. After the first insertion rod 15 is separated from the insertion groove 14, the rotation limit of the turntable 13 can be released, and the lifting seat 9 can be rotated to adjust the angle of the lifting seat 9. After the adjustment is completed, the pull block 18 can be released, and the first spring 19 releases the stored force to drive the first insertion rod 15 to reset. The reset first insertion rod 15 then inserts into the corresponding insertion groove 14 on the turntable 13, thereby limiting the rotation of the turntable 13.

[0041] Specifically, the clamping mechanism 11 includes a C-shaped frame 20, which is located at the upper end of the support seat 9. A first support plate 21 is rotatably connected to the lower end of the C-shaped frame 20 away from the other C-shaped frame 20. The lower end of the first support plate 21 is fixedly connected to one side of the upper end of the support seat 9. A second support plate 22 is provided on the other side of the lower end of the C-shaped frame 20. The lower end of the second support plate 22 is fixedly connected to the other side of the upper end of the support seat 9. A plug-in plate 23 is fixedly connected to the lower end of the C-shaped frame 20 on one side of the second support plate 22. A third slot 24 is provided at the upper end of the second support plate 22 and at a position corresponding to the plug-in plate 23. The plug-in plate 23 is plugged into the third slot 24. A clamping assembly 37 is provided in the middle of the C-shaped frame 20. A second limiting mechanism 25 is provided at the side of the second support plate 22 away from the first support plate 21 and at a position corresponding to the third slot 24.

[0042] Through the above structural design, it can be seen that the C-shaped frame 20 can be supported by the second support plate 22 and the first support plate 21. By rotating the C-shaped frame 20 and the first support plate 21, the closure between the C-shaped frame 20 and the second support plate 22 can be opened. After opening, the limbs of the mother can be placed on the support seat 9. Then, by rotating the C-shaped frame 20 and closing it with the second support plate 22, the closure between the C-shaped frame 20 and the second support plate 22 is limited by the second limiting mechanism 25. The clamping component 37 can clamp the limbs of the mother on the support seat 9.

[0043] Specifically, the second limiting mechanism 25 includes a pull rod 26. The pull rod 26 is located on the side of the second support plate 22 away from the first support plate 21 and corresponds to the third slot 24. Both ends of the pull rod 26 on the side away from the second support plate 22 are provided with first limiting blocks 28. A first guide rod 29 is fixedly connected to the end of the first limiting block 28 closest to the second support plate 22. The end of the first guide rod 29 away from the first limiting block 28 passes through the pull rod 26 and is fixedly connected to the second support plate 22. The pull rod 26 and the first guide rod 29 are slidably connected. The outer side of the first guide rod 29... A second spring 30 is provided on the side and located between the pull rod 26 and the second support plate 22. One end of the second spring 30 is fixedly connected to the pull rod 26, and the other end of the second spring 30 is fixedly connected to the second support plate 22. A second plug rod 27 is fixedly connected to the middle of the pull rod 26 near the second support plate 22. The end of the second plug rod 27 away from the pull rod 26 passes through the second support plate 22 and extends into the third slot 24 to be plugged into the plug plate 23. The upper end of the second plug rod 27 that is plugged into the plug plate 23 is inclined.

[0044] Through the above structural design, it can be seen that when it is necessary to release the restriction on the C-shaped frame 20, the pull rod 26 can be pulled away from the second support plate 22. The pull rod 26 will then cause the second insertion rod 27 to separate from the insertion plate 23. At the same time, the pull rod 26 slides on the outside of the two first guide rods 29 to pull the second spring 30, so that the second spring 30 stores the pulling force. After the second insertion rod 27 is separated from the insertion plate 23, the restriction on the C-shaped frame 20 can be released. After the insertion plate 23 is removed from the inside of the third slot 24, the pull rod 26 can be released. The second spring 30 will then release the stored force to drive the second insertion rod 27 to reset. The reset second insertion rod 27 can then limit the insertion of the insertion plate 23 into the third slot 24 for the next time.

[0045] Example 2:

[0046] The novel limb support provided in Example 1 has been further optimized, specifically, as follows: Figure 8As shown, the clamping assembly 37 includes a clamping plate 31, which is located at the lower end of the C-frame 20 and between the first support plate 21 and the second support plate 22. A bearing 32 is fixedly connected to the middle of the upper end of the clamping plate 31, and a screw 33 is fixedly connected to the upper end of the bearing 32. The upper end of the screw 33 passes through the C-frame 20 and extends to the outer side of the upper end of the C-frame 20, and is fixedly connected to a handle 34. The screw 33 is threadedly connected to the C-frame 20. Second guide rods 35 are fixedly connected to both sides of the upper end of the clamping plate 31. The upper end of the second guide rods 35 passes through the C-frame 20 and extends to the outer side of the upper end of the C-frame 20, and is fixedly connected to a second limiting block 36. The second guide rods 35 are slidably connected to the C-frame 20.

[0047] Through the above structural design, the movement of the clamping plate 31 can be guided by the second guide rod 35, and the second limiting block 36 can prevent the second guide rod 35 from falling off the C-shaped frame 20. It can be seen that when it is necessary to clamp the limbs of the mother on the support seat 9, the handle 34 can be rotated, and the handle 34 will drive the screw 33 to rotate on the bearing 32. Through the connection between the screw 33 and the C-shaped frame 20, when the screw 33 rotates, the screw 33 can push the clamping plate 31 closer to the support seat 9, and the limbs of the mother on the support seat 9 can be clamped by the clamping plate 31 moving closer to the support seat 9.

Claims

1. A novel limb support, characterized in that, Includes a base (1), a telescopic rod (2) is provided at the middle of the upper end of the base (1), the bottom of the telescopic rod (2) is fixedly connected to the base (1), a bearing seat (3) is provided at the telescopic end of the upper end of the telescopic rod (2), the middle of the lower end of the bearing seat (3) is fixedly connected to the telescopic end of the upper end of the telescopic rod (2), a second slot (4) is opened at the middle of the upper end of the bearing seat (3), an adjustment mechanism (6) is provided inside the second slot (4), and support mechanisms (5) are provided at both ends of the upper end of the bearing seat (3), and the two support mechanisms (5) are symmetrically arranged.

2. The novel limb support according to claim 1, characterized in that, The support mechanism (5) includes a bearing plate (7) located at the upper end of the bearing seat (3). A first slider (8) is fixedly connected to the lower end of the bearing plate (7). The first slider (8) is slidably connected to the second slot (4). The first slider (8) is connected to the adjustment mechanism (6). A lifting seat (9) is provided at the upper end of the bearing plate (7). A connecting column (10) is fixedly connected to the middle of the lower end of the lifting seat (9). The end of the connecting column (10) extending away from the lifting seat (9) extends... A turntable (13) is fixedly connected to the inside of the support plate (7). The inside of the support plate (7) is provided with a first slot. The turntable (13) is located in the first slot inside the support plate (7) and is rotatably connected to the first slot. The connecting column (10) is rotatably connected to the support plate (7). The circumferential array of the turntable (13) is provided with multiple insertion slots (14). One end of the support plate (7) is provided with a first limiting mechanism (12). The upper end of the support seat (9) is provided with a clamping mechanism (11).

3. A novel limb support according to claim 2, characterized in that, The first limiting mechanism (12) includes a pull block (18), which is located on the outer side of one end of the bearing plate (7). A first insertion rod (15) is fixedly connected to one end of the pull block (18) near the bearing plate (7). The first insertion rod (15) extends through the bearing plate (7) to the inside of the first slot and is inserted into the insertion slot (14) on the turntable (13). The first insertion rod (15) is slidably connected to the bearing plate (7). The first insertion rod (15) is located on both sides of one end of the bearing plate (7). Each of the first plug rods is fixedly connected to a second slider (16). The first slide groove (17) is provided inside the bearing plate (7) at a position corresponding to the second slider (16). The second slider (16) is slidably connected to the first slide groove (17). A first spring (19) is provided on the outside of the first plug rod (15) at a position between the pull block (18) and the bearing plate (7). One end of the first spring (19) is fixedly connected to the pull block (18), and the other end of the first spring (19) is fixedly connected to the bearing plate (7).

4. A novel limb support according to claim 3, characterized in that, The clamping mechanism (11) includes a C-frame (20) located at the upper end of the support seat (9). A first support plate (21) is rotatably connected to the lower end of the C-frame (20) away from the other C-frame (20). The lower end of the first support plate (21) is fixedly connected to one side of the upper end of the support seat (9). A second support plate (22) is provided on the other side of the lower end of the C-frame (20). The lower end of the second support plate (22) is fixedly connected to the other side of the upper end of the support seat (9). A plug-in plate (23) is fixedly connected to the lower end of the frame (20) on one side of the second support plate (22). A third slot (24) is provided at the upper end of the second support plate (22) and at the position corresponding to the plug-in plate (23). The plug-in plate (23) is plugged into the third slot (24). A clamping assembly (37) is provided in the middle of the C-shaped frame (20). A second limiting mechanism (25) is provided at the position of the second support plate (22) away from the first support plate (21) and at the position corresponding to the third slot (24).

5. A novel limb support according to claim 4, characterized in that, The second limiting mechanism (25) includes a pull rod (26), which is located on the side of the second support plate (22) away from the first support plate (21) and corresponds to the third slot (24). Both ends of the pull rod (26) away from the second support plate (22) are provided with first limiting blocks (28). A first guide rod (29) is fixedly connected to the end of the first limiting block (28) near the second support plate (22). The end of the first guide rod (29) away from the first limiting block (28) passes through the pull rod (26) and is fixedly connected to the second support plate (22). The pull rod (26) and the first guide rod (29) are slidably connected. A second spring (30) is provided on the outer side of the pull rod (26) and between the second support plate (22). One end of the second spring (30) is fixedly connected to the pull rod (26), and the other end of the second spring (30) is fixedly connected to the second support plate (22). A second plug rod (27) is fixedly connected to the middle part of the pull rod (26) near the second support plate (22). The end of the second plug rod (27) away from the pull rod (26) extends through the second support plate (22) to the inside of the third slot (24) and is plugged into the plug plate (23). The upper end of the second plug rod (27) and the plug plate (23) is inclined.

6. A novel limb support according to claim 4, characterized in that, The clamping assembly (37) includes a clamping plate (31), which is located at the lower end of the C-frame (20) and between the first support plate (21) and the second support plate (22). A bearing (32) is fixedly connected to the middle of the upper end of the clamping plate (31), and a screw (33) is fixedly connected to the upper end of the bearing (32). The upper end of the screw (33) extends through the C-frame (20) to the outer side of the upper end of the C-frame (20) and is fixedly connected to a rotating handle (34). The screw (33) is threadedly connected to the C-frame (20). A second guide rod (35) is fixedly connected to both sides of the upper end of the clamping plate (31). The upper end of the second guide rod (35) extends through the C-frame (20) to the outer side of the upper end of the C-frame (20) and is fixedly connected to a second limiting block (36). The second guide rod (35) is slidably connected to the C-frame (20).

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