Mammary gland bracket

By designing an adjustable breast bracket, the problem of insufficient adaptability to chest morphology is solved, and higher applicability and therapeutic effect are achieved.

CN120036952AInactive Publication Date: 2025-05-27NANYANG CITY CENT HOSPITAL
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Patent Information

Application Number
CN202510189040.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-20
Publication Date
2025-05-27
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Most of the existing breast brackets adopt a fixed design, which lacks sufficient adaptability to the patient's chest morphology, resulting in discomfort and insufficient treatment effect.

Method used

A breast bracket is designed, including a chest massage box, adjustable transverse support plate, L-shaped rotating plate and vertical support plate, and flexible adjustment and movement of these components are achieved through hydraulic cylinders and drive motors to adapt to the chest shapes of different patients.

Benefits of technology

Through the adjustable design, the breast bracket can better adapt to various chest shapes, improve the applicability and treatment effect of the equipment, and enhance the patient's comfort and experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a mammary gland bracket, and aims to solve the technical problems that most mammary gland brackets in the prior art adopt fixed design and lack full adaptability to the chest form of a patient. The bracket comprises a breast massage box, vertical supporting hydraulic cylinders are fixed to the two ends of the bottom of the breast massage box, an L-shaped supporting plate is slidably connected to the interior of the breast massage box, a vertical supporting plate is slidably connected to one side of the top of the breast massage box, and symmetrical mammary gland massage mechanisms are arranged at the top of the L-shaped supporting plate and the bottom of the vertical supporting plate; by arranging the transverse supporting plate with the adjustable distance, flexible adjustment can be conducted according to the distances between the breasts of different patients, the transverse supporting plate can better adapt to various distances between the breasts, and by arranging the L-shaped rotating plates arranged on the two sides of the transverse supporting plate, the angles of the L-shaped rotating plates can be adjusted through rotation; and the massage effect is enhanced due to good fitness.
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Description

Technical Field

[0001] The present invention belongs to the field of breast care, and particularly relates to a breast support bracket. Background Art

[0002] A breast support bracket is a device widely used in medical treatment and nursing. Especially in the examination, treatment, and postoperative rehabilitation of breast diseases, it plays a crucial role. Traditional breast support brackets generally fix and support the chest to ensure the stability of the breast during specific treatments or examinations. However, with the increasing individual differences among patients, the existing breast support brackets still have certain limitations in adapting to the chest shapes of different patients, comfort, and treatment effects.

[0003] Most of the current breast support brackets on the market adopt a fixed design and lack sufficient adaptability to the chest shapes of patients. This design method may cause discomfort to patients with different chest sizes and shapes, and even affect the treatment effect. The existing breast support brackets generally only provide a support function and lack additional treatment means, especially insufficient functions in massage and promoting blood circulation. Therefore, it is necessary to design a breast support bracket to overcome the above technical defects. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a breast support bracket, which aims to solve the technical problem that most of the existing breast support brackets adopt a fixed design and lack sufficient adaptability to the chest shapes of patients.

[0005] To solve the above technical problems, the present invention provides such a breast support bracket, which includes a chest massage box. Vertical support hydraulic cylinders are fixed at both ends of the bottom of the chest massage box. An L-shaped support plate is slidably connected inside the chest massage box. A vertical support plate is slidably connected to one side of the top of the chest massage box. Symmetrical breast massage mechanisms are provided at the top of the L-shaped support plate and the bottom of the vertical support plate.

[0006] A moving mechanism for moving the chest massage box is provided on the other side of the chest massage box.

[0007] Preferably, the breast massage mechanism includes a rectangular mounting box. A first driving motor is bolted to one end of the rectangular mounting box. The output end of the first driving motor is fixed with a first horizontal threaded rod. A second horizontal threaded rod is fixed to the end of the first horizontal threaded rod away from the first driving motor. Horizontal rectangular sliders are threadedly connected to the outer sides of the first horizontal threaded rod and the second horizontal threaded rod. Vertical support columns are fixed to the tops of the horizontal rectangular sliders.

[0008] Preferably, a rectangular chute is opened inside the rectangular mounting box. The horizontal rectangular slider is located inside the rectangular chute and is slidably connected to the rectangular mounting box through the rectangular chute.

[0009] Preferably, the thread directions of the first horizontal threaded rod and the second horizontal threaded rod are opposite, and a cross bar is fixed at the connection of the first horizontal threaded rod and the second horizontal threaded rod. The cross bar is located inside the rectangular installation box and is rotatably connected to the rectangular installation box through a bearing.

[0010] Furthermore, the breast massage mechanism further includes a horizontal support plate. The top of the vertical support column is fixedly connected to the horizontal support plate. One side of the bottom of the horizontal support plate is fixedly connected with a first vertical hydraulic cylinder. The output end of the first vertical hydraulic cylinder is fixedly connected with a horizontal connecting plate. Both ends of the horizontal connecting plate are rotatably connected with a first inclined rotating plate. The end of the first inclined rotating plate far away from the horizontal connecting plate is rotatably connected with a horizontal sliding block through a pin shaft. One side of the horizontal sliding block is rotatably connected with an inclined connecting plate through a pin shaft. Both ends of the horizontal support plate are rotatably connected with an L-shaped rotating plate through a pin shaft. The L-shaped rotating plate and the inclined connecting plate are rotatably connected through a pin shaft.

[0011] Furthermore, a dovetail slider is fixed on the top of the horizontal sliding block, and a dovetail chute is opened inside the horizontal support plate. The horizontal sliding block and the horizontal support plate are slidably connected through the dovetail slider and the dovetail chute.

[0012] Furthermore, spherical massage heads are arranged on the tops of the horizontal support plate and the L-shaped rotating plate.

[0013] Furthermore, the moving mechanism includes a horizontal installation plate which is fixed inside the chest massage box. A second driving motor is bolted to the top of the horizontal installation plate. The output end of the second driving motor is fixedly connected with a vertical threaded rod. A vertical lifting plate is threadedly connected to the outside of the vertical threaded rod. The bottom of the vertical lifting plate is rotatably connected with a second inclined rotating plate through a pin shaft. The bottom of the second inclined rotating plate is rotatably connected with an L-shaped support plate through a pin shaft.

[0014] Furthermore, vertical optical rods are fixed at both ends of the bottom of the horizontal installation plate. The vertical optical rods penetrate through the inside of the vertical lifting plate and are slidably connected with the vertical lifting plate.

[0015] Furthermore, second vertical hydraulic cylinders are fixed at both ends of the other side of the L-shaped support plate. The output ends of the second vertical hydraulic cylinders are fixedly connected with a longitudinal connecting plate. The side of the longitudinal connecting plate close to the vertical support plate is fixedly connected with the vertical support plate. A vertical chute is opened inside the L-shaped support plate. The longitudinal connecting plate is located inside the vertical chute and is slidably connected with the L-shaped support plate through the vertical chute.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0017] Through a series of designs, the present invention can be flexibly adjusted according to the chest spacing of different patients by setting a laterally supporting plate with adjustable spacing, enabling the laterally supporting plate to better adapt to various chest spacings, solving the problem of insufficient adaptability of traditional breast brackets to individual differences of patients, and thus improving the wide applicability of the device.

[0018] Through the L-shaped rotating plates arranged on both sides of the laterally supporting plate of the present invention, the L-shaped rotating plates can adjust their angles by rotation to ensure that the spherical massage heads on the top of the laterally supporting plate and the L-shaped rotating plates are in contact with the patient's chest. The good adhesion enhances the massage effect, promotes local blood circulation through massage, helps relieve discomfort, and improves the treatment effect.

[0019] Through the movement of the L-shaped supporting plate and the lifting of the vertical supporting plate of the present invention, the massage parts of the L-shaped supporting plate and the vertical supporting plate can move out of the interior of the chest massage box, enabling the top of the L-shaped supporting plate and the bottom of the vertical supporting plate to move towards the patient's chest, improving the patient's experience. Moreover, through the lifting of the vertical supporting plate, the spacing between the L-shaped supporting plate and the vertical supporting plate can be adjusted according to the patient's chest, improving the applicability. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the whole of the present invention.

[0021] Figure 2 It is a schematic structural diagram of the chest massage box and the vertical supporting hydraulic cylinder of the present invention.

[0022] Figure 3 It is a schematic structural diagram of the L-shaped supporting plate and the vertical supporting plate of the present invention.

[0023] Figure 4 It is a schematic structural diagram of the interior of the chest massage box of the present invention.

[0024] Figure 5 It is a schematic structural diagram of the interior of the rectangular installation box of the present invention.

[0025] Figure 6 It is a schematic structural diagram of the laterally supporting plate and the L-shaped rotating plate of the present invention.

[0026] Figure 7 It is a schematic structural diagram of the first vertical hydraulic cylinder and the lateral connecting plate of the present invention.

[0027] Figure 8 It is a schematic structural diagram of the second driving motor and the vertical threaded rod of the present invention.

[0028] The labels in the attached drawings are as follows: 1. Chest massage box; 2. L-shaped support plate; 3. Vertical support plate; 4. Vertical support hydraulic cylinder; 5. Rectangular installation box; 6. First driving motor; 7. First horizontal threaded rod; 8. Second horizontal threaded rod; 9. Horizontal rectangular slider; 10. Vertical support column; 11. Horizontal support plate; 12. L-shaped rotating plate; 13. Spherical massage head; 14. First vertical hydraulic cylinder; 15. Horizontal connecting plate; 16. First inclined rotating plate; 17. Horizontal sliding block; 18. Inclined connecting plate; 19. Second vertical hydraulic cylinder; 20. Longitudinal connecting plate; 21. Horizontal mounting plate; 22. Second driving motor; 23. Vertical threaded rod; 24. Vertical smooth rod; 25. Vertical lifting plate; 26. Second inclined rotating plate. Detailed implementation mode

[0029] This detailed implementation mode is a breast support, and its structural schematic diagram is as Figures 1-8 shown. The support includes a chest massage box 1. At both ends of the bottom of the chest massage box 1, vertical support hydraulic cylinders 4 are fixedly installed. Inside the chest massage box 1, an L-shaped support plate 2 is slidably connected. On one side of the top of the chest massage box 1, a vertical support plate 3 is slidably connected. On the top of the L-shaped support plate 2 and the bottom of the vertical support plate 3, symmetric breast massage mechanisms are provided.

[0030] On the other side of the chest massage box 1, a moving mechanism for moving the chest massage box 1 is provided.

[0031] The breast massage mechanism includes a rectangular installation box 5. At one end of the rectangular installation box 5, a first driving motor 6 is bolted and fixed. The output end of the first driving motor 6 is fixedly installed with a first horizontal threaded rod 7. The end of the first horizontal threaded rod 7 away from the first driving motor 6 is fixedly installed with a second horizontal threaded rod 8. On the outer sides of the first horizontal threaded rod 7 and the second horizontal threaded rod 8, horizontal rectangular sliders 9 are threadedly connected. On the top of the horizontal rectangular slider 9, a vertical support column 10 is fixedly installed.

[0032] A rectangular sliding groove is opened inside the rectangular installation box 5. The horizontal rectangular slider 9 is located inside the rectangular sliding groove and is slidably connected with the rectangular installation box 5 through the rectangular sliding groove. Through the setting of the rectangular sliding groove, the horizontal rectangular slider 9 can slide inside the rectangular installation box 5.

[0033] The thread rotation directions of the first horizontal threaded rod 7 and the second horizontal threaded rod 8 are opposite. A cross bar is fixedly installed at the connection of the first horizontal threaded rod 7 and the second horizontal threaded rod 8. The cross bar is located inside the rectangular installation box 5 and is rotatably connected with the rectangular installation box 5 through a bearing. Through the setting that the threads of the first horizontal threaded rod 7 and the second horizontal threaded rod 8 are opposite, when the first driving motor 6 operates, the moving directions of the two horizontal rectangular sliders 9 are opposite. Through the setting of the cross bar, the first horizontal threaded rod 7 and the second horizontal threaded rod 8 can rotate synchronously better.

[0034] Here, the operation of the first drive motor 6 enables the first horizontal threaded rod 7 and the second horizontal threaded rod 8 to rotate. The rotation of the first horizontal threaded rod 7 and the second horizontal threaded rod 8 enables the horizontal rectangular slider 9 to slide horizontally inside the rectangular mounting box 5. The sliding of the horizontal rectangular slider 9 enables the vertical support column 10 to slide, thereby enabling the distance between the two vertical support columns 10 to be adjusted.

[0035] The breast massage mechanism further includes a horizontal support plate 11. The top of the vertical support column 10 is fixedly connected to the horizontal support plate 11. One side of the bottom of the horizontal support plate 11 is fixed with a first vertical hydraulic cylinder 14. The output end of the first vertical hydraulic cylinder 14 is fixed with a horizontal connecting plate 15. Both ends of the horizontal connecting plate 15 are rotatably connected with a first inclined rotating plate 16. One end of the first inclined rotating plate 16 away from the horizontal connecting plate 15 is rotatably connected with a horizontal sliding block 17 through a pin shaft. One side of the horizontal sliding block 17 is rotatably connected with an inclined connecting plate 18 through a pin shaft. Both ends of the horizontal support plate 11 are rotatably connected with an L-shaped rotating plate 12 through a pin shaft. The L-shaped rotating plate 12 and the inclined connecting plate 18 are rotatably connected through a pin shaft.

[0036] The top of the horizontal sliding block 17 is fixed with a dovetail slider. A dovetail chute is formed inside the horizontal support plate 11. The horizontal sliding block 17 and the horizontal support plate 11 are slidably connected through the arrangement of the dovetail slider and the dovetail chute. Through the arrangement of the dovetail slider and the dovetail chute, the horizontal sliding block 17 can slide horizontally at the bottom of the horizontal support plate 11. When the horizontal sliding block 17 slides, through the arrangement of the inclined connecting plate 18, the L-shaped rotating plate 12 can rotate.

[0037] Spherical massage heads 13 are arranged on the tops of both the horizontal support plate 11 and the L-shaped rotating plate 12. Through the arrangement of the spherical massage heads 13, the spherical massage heads 13 can massage the breasts of the patient.

[0038] Here, the operation of the first vertical hydraulic cylinder 14 enables the horizontal connecting plate 15 to move vertically up and down. The vertical up and down movement of the horizontal connecting plate 15 enables the horizontal sliding block 17 to slide horizontally inside the horizontal support plate 11 through the first inclined rotating plate 16, and the moving directions of the two horizontal sliding blocks 17 are opposite. The movement of the horizontal sliding block 17 enables the L-shaped rotating plate 12 to rotate through the inclined connecting plate 18, and the L-shaped rotating plate 12 can rotate around the connection point between the L-shaped rotating plate 12 and the horizontal support plate 11, thereby enabling the spherical massage head 13 on the top of the L-shaped rotating plate 12 to be attached to the outside of the chest, so that the spherical massage head 13 can massage the chest of the patient.

[0039] The moving mechanism includes a horizontal mounting plate 21, which is fixed inside the chest massage box 1. A second driving motor 22 is bolted to the top of the horizontal mounting plate 21. The output end of the second driving motor 22 is fixed with a vertical threaded rod 23. A vertical lifting plate 25 is threadedly connected to the outside of the vertical threaded rod 23. The bottom of the vertical lifting plate 25 is rotatably connected to a second obliquely rotating plate 26 through a pin shaft. The bottom of the second obliquely rotating plate 26 is rotatably connected to the L-shaped support plate 2 through a pin shaft.

[0040] Both ends of the bottom of the horizontal mounting plate 21 are fixed with vertical optical rods 24. The vertical optical rods 24 penetrate through the inside of the vertical lifting plate 25 and are slidably connected to the vertical lifting plate 25. Through the arrangement of the vertical optical rods 24, the vertical lifting plate 25 can perform vertical sliding on the outside of the vertical optical rods 24, so that the movement track of the vertical lifting plate 25 is guided by the vertical optical rods 24.

[0041] Here, the operation of the second driving motor 22 enables the second driving motor 22 to drive the vertical threaded rod 23 to rotate. The rotation of the vertical threaded rod 23 enables the vertical lifting plate 25 to perform vertical sliding on the outside of the vertical optical rods 24. Through the arrangement of the second obliquely rotating plate 26, the L-shaped support plate 2 can slide inside the chest massage box 1, so that the spherical massage head 13 can move out of the inside of the chest massage box 1, facilitating the spherical massage head 13 to massage the patient's chest.

[0042] Both ends of the other side of the L-shaped support plate 2 are fixed with second vertical hydraulic cylinders 19. The output ends of the second vertical hydraulic cylinders 19 are fixed with longitudinal connecting plates 20. The side of the longitudinal connecting plate 20 close to the vertical support plate 3 is fixedly connected to the vertical support plate 3. A vertical sliding groove is formed inside the L-shaped support plate 2. The longitudinal connecting plate 20 is located inside the vertical sliding groove and is slidably connected to the L-shaped support plate 2 through the vertical sliding groove. Through the arrangement of the vertical sliding groove, the longitudinal connecting plate 20 can perform vertical sliding inside the L-shaped support plate 2, so that the vertical support plate 3 can perform vertical lifting on one side of the L-shaped support plate 2, and the distance between the top of the vertical support plate 3 and the L-shaped support plate 2 can be adjusted.

[0043] Here, the operation of the second vertical hydraulic cylinder 19 enables the longitudinal connecting plate 20 to perform vertical sliding inside the L-shaped support plate 2, so that the distance between the bottom of the vertical support plate 3 and the top of the L-shaped support plate 2 can be adjusted to adapt to chests of different thicknesses, enabling both the top and bottom of the chest to be massaged and improving the massage efficiency.

[0044] Working principle: When using the bracket of this technical solution, the operation of the first driving motor 6 enables the first horizontal threaded rod 7 and the second horizontal threaded rod 8 to rotate. The rotation of the first horizontal threaded rod 7 and the second horizontal threaded rod 8 enables the horizontal rectangular slider 9 to slide horizontally inside the rectangular installation box 5. The sliding of the horizontal rectangular slider 9 enables the vertical support column 10 to slide, thereby enabling the distance between the two vertical support columns 10 to be adjusted, and further enabling the distance between the two horizontal support plates 11 to be adjusted, so that the distance between the two horizontal support plates 11 can adapt to the distance of different patients' chests, improving the applicability of this device.

[0045] The operation of the first vertical hydraulic cylinder 14 enables the horizontal connecting plate 15 to lift vertically. The vertical lifting of the horizontal connecting plate 15 enables the horizontal sliding block 17 to slide horizontally inside the horizontal support plate 11 through the first inclined rotating plate 16, and the moving directions of the two horizontal sliding blocks 17 are opposite. The movement of the horizontal sliding block 17 enables the L-shaped rotating plate 12 to rotate through the inclined connecting plate 18, and the L-shaped rotating plate 12 can rotate around the connection point between the L-shaped rotating plate 12 and the horizontal support plate 11, so that the spherical massage head 13 at the top of the L-shaped rotating plate 12 can be attached to the outside of the chest, facilitating the spherical massage head 13 to massage the patient's chest.

[0046] The operation of the second driving motor 22 enables the second driving motor 22 to drive the vertical threaded rod 23 to rotate. The rotation of the vertical threaded rod 23 enables the vertical lifting plate 25 to slide vertically outside the vertical optical rod 24. The sliding of the vertical lifting plate 25, through the setting of the second inclined rotating plate 26, enables the L-shaped support plate 2 to slide inside the chest massage box 1, so that the spherical massage head 13 can move out of the inside of the chest massage box 1, facilitating the spherical massage head 13 to massage the patient's chest.

[0047] The operation of the second vertical hydraulic cylinder 19 enables the longitudinal connecting plate 20 to slide vertically inside the L-shaped support plate 2, thereby enabling the distance between the bottom of the vertical support plate 3 and the top of the L-shaped support plate 2 to be adjusted to adapt to chests of different thicknesses, so that both the top and bottom of the chest can be massaged, improving the massage efficiency.

[0048] All technical features in this embodiment can be freely combined according to actual needs.

[0049] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of this technical solution is within the protection scope of the present invention.

Claims

1. A breast bracket, characterized in that: The bracket comprises a breast massage box (1), both ends of the bottom of the breast massage box (1) are fixed with vertical support hydraulic cylinders (4), the interior of the breast massage box (1) is slidably connected with an L-shaped support plate (2), one side of the top of the breast massage box (1) is slidably connected with a vertical support plate (3), and the top of the L-shaped support plate (2) and the bottom of the vertical support plate (3) are both provided with symmetrical breast massage mechanisms; A moving mechanism for moving the chest massage box (1) is provided on the other side of the chest massage box (1).

2. A breast support according to claim 1, characterized in that: The breast massage mechanism comprises a rectangular installation box (5), a first drive motor (6) being fixed to one end of the rectangular installation box (5) by bolts, a first transverse threaded rod (7) being fixed to the output end of the first drive motor (6), a second transverse threaded rod (8) being fixed to the end of the first transverse threaded rod (7) away from the first drive motor (6), a transverse rectangular sliding block (9) being threadedly connected to the outer sides of the first transverse threaded rod (7) and the second transverse threaded rod (8), and a vertical support column (10) being fixed to the top of the transverse rectangular sliding block (9).

3. A breast support according to claim 2, characterized in that: A rectangular slide groove is provided inside the rectangular installation box (5), and the transverse rectangular sliding block (9) is located inside the rectangular slide groove and is slidably connected to the rectangular installation box (5) via the rectangular slide groove.

4. A breast support according to claim 2, characterized in that: The threads of the first transverse threaded rod (7) and the second transverse threaded rod (8) are in opposite directions, a transverse rod is fixed at the connection between the first transverse threaded rod (7) and the second transverse threaded rod (8), and the transverse rod is located inside the rectangular installation box (5) and is rotatably connected to the rectangular installation box (5) via a bearing.

5. A breast bracket according to claim 2, characterized in that: The breast massage mechanism further comprises a transverse support plate (11), the top of the vertical support column (10) is fixedly connected to the transverse support plate (11), a first vertical hydraulic cylinder (14) is fixed to one side of the bottom of the transverse support plate (11), a transverse connecting plate (15) is fixed to the output end of the first vertical hydraulic cylinder (14), both ends of the transverse connecting plate (15) are rotatably connected to a first oblique rotating plate (16), one end of the first oblique rotating plate (16) away from the transverse connecting plate (15) is rotatably connected to a transverse sliding block (17) via a pin shaft, one side of the transverse sliding block (17) is rotatably connected to an oblique connecting plate (18) via a pin shaft, both ends of the transverse support plate (11) are rotatably connected to an L-shaped rotating plate (12) via a pin shaft, and the L-shaped rotating plate (12) and the oblique connecting plate (18) are rotatably connected via a pin shaft.

6. A breast support according to claim 5, characterized in that: A dovetail slider is fixed on the top of the transverse sliding block (17), a dovetail slot is provided inside the transverse supporting plate (11), and the transverse sliding block (17) and the transverse supporting plate (11) are slidably connected via the dovetail slider and the dovetail slot.

7. A breast support according to claim 5, characterized in that: A spherical massage head (13) is provided on the top of the transverse support plate (11) and the L-shaped rotating plate (12).

8. A breast bracket according to claim 1, characterized in that: The moving mechanism comprises a transverse mounting plate (21), the transverse mounting plate (21) being fixed inside the chest massage box (1), a second drive motor (22) being fixed to the top of the transverse mounting plate (21) by bolts, a vertical threaded rod (23) being fixed to the output end of the second drive motor (22), a vertical lifting plate (25) being threadedly connected to the outer side of the vertical threaded rod (23), a second oblique rotating plate (26) being rotatably connected to the bottom of the vertical lifting plate (25) by a pin shaft, and a second oblique rotating plate (26) being rotatably connected to the L-shaped support plate (2) by a pin shaft.

9. A breast support according to claim 8, characterized in that: Vertical light rods (24) are fixed to both ends of the bottom of the transverse mounting plate (21), and the vertical light rods (24) penetrate the interior of the vertical lifting plate (25) and are slidably connected to the vertical lifting plate (25).

10. A breast support according to claim 1, characterized in that: A second vertical hydraulic cylinder (19) is fixed to both ends of the other side of the L-shaped support plate (2); a longitudinal connecting plate (20) is fixed to the output end of the second vertical hydraulic cylinder (19); the longitudinal connecting plate (20) is close to one side of the vertical support plate (3) and is fixedly connected to the vertical support plate (3); a vertical sliding groove is provided inside the L-shaped support plate (2); the longitudinal connecting plate (20) is located inside the vertical sliding groove and is slidably connected to the L-shaped support plate (2) via the vertical sliding groove.