An assistive device for rehabilitation after arm fracture

Abstract

The present invention discloses an auxiliary device for rehabilitation after an arm fracture, comprising: a base, a frame plate fixed at the top, a vertical housing sleeve for accommodating the upper arm fixed to the side wall of the frame plate, and a horizontal housing sleeve for accommodating the lower arm rotatably connected to the bottom of the vertical housing sleeve; a twisting training component, comprising a fixed end of a driving member fixed to an end of the horizontal housing sleeve away from the vertical housing sleeve, a rotating end of the driving member being transmission-connected to a twisting member, the twisting member being located in the horizontal housing sleeve and being grasped by a human hand, and the rotating end of the driving member being fixed to the fixed end of the driving member via a fixing member; a bending training member located on a side of the driving member away from the horizontal housing sleeve, the fixed end of the bending training member being fixed to the top of the base, the bending training member being rotatably connected to a rotating member, the rotating member being wrapped with a pull rope, the other end of the pull rope being connected to the fixing member via the frame plate and being used to lift the fixed end of the driving member. The present invention can realize bending and twisting training of the arm, and can also perform heating stimulation operation during training.

Description

Technical Field

[0001] The present invention belongs to the technical field of arm fracture rehabilitation training auxiliary equipment, and in particular relates to an auxiliary device for rehabilitation after an arm fracture. Background Art

[0002] Fracture rehabilitation training involves practicing range of motion around the joints to prevent adhesion and stiffness that can affect joint mobility. Additionally, fractures require muscle strength training. These muscles include many, and it may be necessary to train them individually to prevent deep vein thrombosis (DVT) or muscle atrophy, which can affect limb movement.

[0003] In the prior art, there are a variety of assistive devices to assist rehabilitation training. However, most of the assistive devices have relatively simple functions, that is, the assistive devices only realize the bending or twisting of the arm, and there is a lack of assistive devices that can realize the above two functions. In addition, during rehabilitation training, the patient's fracture site can be stimulated by heating, but most of the existing assistive devices do not have this function. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention proposes an auxiliary device for rehabilitation after arm fracture, which can realize arm bending and twisting training, and can perform heating stimulation operation during training.

[0005] To achieve the above object, the present invention provides an auxiliary device for rehabilitation after arm fracture, comprising:

[0006] The base has a frame plate fixed on the top, a vertical housing sleeve for accommodating the upper arm fixed on the side wall of the frame plate, and a horizontal housing sleeve for accommodating the lower arm rotatably connected to the bottom of the vertical housing sleeve;

[0007] The twisting training assembly includes a fixed end of a driving member fixed to an end of the horizontal housing sleeve away from the vertical housing sleeve, a rotating end of the driving member being transmission-connected to a twisting member, the twisting member being located within the horizontal housing sleeve and grasped by a human hand, and the rotating end of the driving member being fixed to the fixed end of the driving member via a fixing member;

[0008] a bending training piece, located on a side of the driving piece away from the horizontal accommodating sleeve, the fixed end of the bending training piece being fixedly connected to the top of the base, the bending training piece being rotatably connected to a rotating piece, the rotating piece being wrapped with a pull rope, the other end of the pull rope being connected to the fixed piece through the frame plate and being used to lift the fixed end of the driving piece;

[0009] The heating element is detachably connected to the outer wall of the horizontal accommodating sleeve.

[0010] Furthermore, the fixed end of the driving member is a fixing frame fixed to the top of the base, a rotating groove is provided at the top of the fixing frame, the rotating end of the driving member is a rotating plate arranged in the rotating groove, a twisting handle is fixed to the top of the rotating plate, a rotating rod is fixed through the axis of the rotating plate, the end of the rotating rod away from the horizontal accommodating sleeve is rotatably connected to the fixing frame, the end of the rotating plate close to the horizontal accommodating sleeve is fixed to the axis of a connecting rod, the other end of the connecting rod passes through the fixing frame and extends into the horizontal accommodating sleeve and is fixed to the twisting member.

[0011] Furthermore, the torsion member includes a long plate fixedly connected to one end of the connecting rod, and the end of the long plate away from the connecting rod is fixedly connected to two oppositely arranged connecting plates, and a gripping rod for human hand gripping is fixedly connected between the two connecting plates.

[0012] Furthermore, the twist handle passes through the rotating plate, and a cavity is provided in the twist handle. The fixing part includes a threaded rod passing through the cavity of the rotating plate. A threaded hole is provided on the inner wall of the bottom end of the rotating groove to match and fix the end of the threaded rod. Two upper and lower limiting rings are fixed to the top of the threaded rod, and a connecting ring is sleeved on the threaded rod. The connecting ring is located between the two limiting rings, and the connecting ring is fixed to the pull rope.

[0013] Furthermore, the side walls of the base and the side walls of the frame are provided with grooves for accommodating the pull rope, and the top side wall of the frame is fixedly connected with a support shaft, the pull rope is supported by the support shaft and one end is fixedly connected to the connecting ring.

[0014] Furthermore, the bending training piece includes a support seat fixed on the top of the base, and the rotating piece includes a rope winding rod passed through the support seat. There are two pull ropes, and the two pull ropes are located on both sides of the base and wound around the rope winding rod. Rotating handles are respectively fixed at both ends of the rope winding rod.

[0015] Furthermore, first friction plates are fixedly connected to both side walls of the support seat, and two second friction plates are fixedly mounted on the rope winding rod, and the two first friction plates are respectively arranged corresponding to and in contact with the two second friction plates.

[0016] Furthermore, the heating element includes an arc-shaped plate mounted on the outside of the horizontal containing sleeve, a mounting plate is fixed to the top of the horizontal containing sleeve, a fixing bolt is threadedly connected to the mounting plate, the end of the fixing bolt is threadedly connected to the top of the arc-shaped plate, and a hot water bag is arranged between the inner wall of the arc-shaped plate and the outer wall of the horizontal containing sleeve.

[0017] Furthermore, support plates are respectively provided at both ends of the horizontal accommodating sleeve, the support plates are close to the vertical accommodating sleeve, the bottom ends of the two support plates are fixedly connected to the top end of the base, and short rods are fixedly connected to the two side walls of the horizontal accommodating sleeve, and the short rods pass through the support plates and are rotatably connected to the support plates.

[0018] Furthermore, an elbow accommodating sleeve is provided at the connection between the vertical accommodating sleeve and the horizontal accommodating sleeve, and the elbow accommodating sleeve is fixedly connected to the vertical accommodating sleeve.

[0019] Compared with the prior art, the present invention has the following advantages and technical effects:

[0020] 1. With the cooperation of the pull rope and the fixing part, when the fixing part is not fixed to the rotating end of the driving part, the torsion part can be rotated to perform arm twisting training. When the fixing part is fixed to the rotating end of the driving part, the pull rope is driven to move by the rotating part, and the horizontal accommodating sleeve is bent relative to the vertical accommodating sleeve, which can achieve arm bending training.

[0021] 2. A detachable heating element is provided on the horizontal accommodation sleeve. During rehabilitation training, the heating function can be used or not. When the heating function is used, it can have a stimulating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of this application. The exemplary embodiments and descriptions of this application are intended to explain this application and do not constitute an improper limitation on this application. In the accompanying drawings:

[0023] Figure 1 A perspective view of the auxiliary device;

[0024] Figure 2 It is a three-dimensional diagram of the twisting training state;

[0025] Figure 3 It is a three-dimensional diagram of the bending training state;

[0026] Figure 4 A perspective view of a strap provided for the assistive device;

[0027] Figure 5 The exploded diagram of the connection between the driving member and the torsional member;

[0028] Figure 6 It is a structural diagram of the connection relationship between the threaded rod and the connecting ring;

[0029] Figure 7 This is an exploded view of the connection between the support seat and the rope winding rod;

[0030] Figure 8 An exploded view of the connection between the curved plate and the horizontal housing sleeve;

[0031] Among them, 1-base, 2-frame plate, 3-vertical accommodating sleeve, 4-horizontal accommodating sleeve, 5-pull rope, 6-fixed frame, 7-rotating plate, 8-twist handle, 9-rotating rod, 10-connecting rod, 11-long plate, 12-connecting plate, 13-grasping rod, 14-through cavity, 15-threaded rod, 16-threaded hole, 17-limiting ring, 18-connecting ring, 19-wire groove, 20-support shaft, 21-support seat, 22-rope winding rod, 23-rotating handle, 24-first friction plate, 25-second friction plate, 26-arc plate, 27-mounting plate, 28-fixing bolt, 29-hot water bag, 30-support plate, 31-short rod, 32-elbow accommodating sleeve, 33-hoop, 34-flexible sleeve, 35-limiting groove, 36-limiting block. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Reference Figure 1-8 The present invention provides an auxiliary device for rehabilitation after an arm fracture, comprising: a base 1, a frame plate 2 being fixed on the top, a vertical accommodating sleeve 3 for accommodating the upper arm being fixed on the side wall of the frame plate 2, and a horizontal accommodating sleeve 4 for accommodating the lower arm being rotatably connected to the bottom of the vertical accommodating sleeve 3; a twisting training component comprising a fixed end of a driving member fixed to an end of the horizontal accommodating sleeve 4 away from the vertical accommodating sleeve 3, a rotating end of the driving member being transmission-connected with a twisting member, the twisting member being located in the horizontal accommodating sleeve 4 and being grasped by a human hand, and the rotating end of the driving member being fixed to the fixed end of the driving member through a fixing member; a bending training member being located on a side of the driving member away from the horizontal accommodating sleeve 4, the fixed end of the bending training member being fixed to the top of the base 1, the bending training member being rotatably connected to a rotating member, a pull rope 5 being wound around the rotating member, the other end of the pull rope 5 being connected to the fixing member through the frame plate 2 and being used to lift the fixed end of the driving member; a heating member being detachably connected to the outer wall of the horizontal accommodating sleeve 4.

[0035] During rehabilitation training, the upper arm is placed in the vertical accommodation sleeve 3 and the lower arm is placed in the horizontal accommodation sleeve 4 .

[0036] Reference Figure 2When performing twisting rehabilitation training, the hand of the arm to be trained holds the twisting piece, and the patient's other hand rotates the rotating end of the driving piece, which drives the twisting piece to rotate left and right to achieve lower arm twisting training.

[0037] Reference Figure 3 When performing bending rehabilitation training, the fixing part is inserted into the rotating end of the driving part and the rotating end of the driving part is relatively fixed to the fixed end of the driving part. At this time, the torsion part cannot rotate. At the same time, after the fixing part is installed, the connection between the driving part and the rotating part is achieved through the pull rope 5. By rotating the rotating part, the horizontal accommodating sleeve 4 can be rotated relative to the vertical accommodating sleeve 3 to achieve bending training.

[0038] In the above process, a heating element may be installed on the horizontal housing sleeve 4 according to actual needs, and the heating element provides a suitable temperature to stimulate the fracture area or other healthy areas.

[0039] Further, refer to Figure 4 Multiple detachable straps 33 are connected to the vertical and horizontal housing sleeves 3 and 4. These straps 33 prevent the arm from dislodging from the training device during rehabilitation training. Flexible padding can also be appropriately installed on the vertical and horizontal housing sleeves 3 and 4 to enhance user comfort.

[0040] Further optimization plan, refer to Figure 5 The fixed end of the driving member is a fixing frame 6 fixed to the top of the base 1. A rotating groove is opened at the top of the fixing frame 6. The rotating end of the driving member is a rotating plate 7 arranged in the rotating groove. A twist handle 8 is fixed to the top of the rotating plate 7. A rotating rod 9 is fixed to the axis of the rotating plate 7. The end of the rotating rod 9 away from the horizontal accommodating sleeve 4 is rotatably connected to the fixing frame 6. The end of the rotating plate 7 close to the horizontal accommodating sleeve 4 is fixed to the axis of a connecting rod 10. The other end of the connecting rod 10 passes through the fixing frame 6 and extends into the horizontal accommodating sleeve 4 and is fixed to the torsion member.

[0041] Further optimization plan, refer to Figure 5 The torsion member includes a long plate 11 fixed to one end of the connecting rod 10, and two oppositely arranged connecting plates 12 are fixed to one end of the long plate 11 away from the connecting rod 10, and a gripping rod 13 for human hand gripping is fixed between the two connecting plates 12.

[0042] It can be understood that by grasping and rotating the twist handle 8 with the other arm, the rotating plate 7 rotates under the action of the rotating rod 9, and the rotating plate 7 drives the connecting rod 10 and then drives the long board 11, the connecting plate 12, and the grasping rod 13 to rotate.

[0043] Furthermore, a flexible sleeve 34 is fixedly mounted on the gripping rod 13 to improve gripping comfort and friction.

[0044] Further optimization plan, refer to Figure 5 、 Figure 6 The twist handle 8 passes through the rotating plate 7, and a cavity 14 is provided in the twist handle 8. The fixing part includes a threaded rod 15 passing through the cavity 14 of the rotating plate 7. The inner wall of the bottom end of the rotating groove is provided with a threaded hole 16 that matches and fixes the end of the threaded rod 15. Two upper and lower limit rings 17 are fixed to the top of the threaded rod 15. A connecting ring 18 is sleeved on the threaded rod 15. The connecting ring 18 is located between the two limit rings 17, and the connecting ring 18 is fixed to the pull rope 5.

[0045] As will be appreciated, when performing twisting exercises, threaded rod 15 is not installed within lumen 14 and is positioned away from twist handle 8, for example, on the other side of frame plate 2. When performing bending exercises, threaded rod 15 is inserted into lumen 14 and rotated into threaded hole 16. This secures threaded rod 15 to fixed frame 6, preventing rotating plate 7 from rotating relative to fixed frame 6. Furthermore, connecting ring 18 is restrained by two retaining rings 17, allowing horizontal housing 4 to rotate and reposition relative to vertical housing 3 when pull cord 5 contracts or extends.

[0046] The connection ring 18 is provided so that when the threaded rod 15 rotates, the connection ring 18 will not cause the pull rope 5 to twist.

[0047] Further optimization plan, refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 The side walls of the base 1 and the frame 2 are provided with a wire groove 19 for accommodating the pull rope 5. The top side wall of the frame 2 is fixedly connected to a support shaft 20. The pull rope 5 is supported by the support shaft 20 and one end is fixedly connected to the connecting ring 18.

[0048] The wire groove 19 is used to limit the pull rope 5. Under the action of the support shaft 20, one end of the pull rope 5 is connected to the rope winding rod 22, and the other end is overlapped on the support shaft 20 and the end is connected to the connecting ring 18.

[0049] Further optimization plan, refer to Figure 7 The bending training piece includes a support base 21 fixed on the top of the base 1, and the rotating piece includes a rope winding rod 22 passing through the support base 21. There are two pull ropes 5, and the two pull ropes 5 are located on both sides of the base 1 and are wound around the rope winding rod 22. Rotating handles 23 are respectively fixed at both ends of the rope winding rod 22.

[0050] It can be understood that two pull ropes 5 are provided to improve the connection strength with the fixed frame 6 during bending training. At the same time, rotating handles 23 are fixed to both ends of the rope winding rod 22. When any arm of the human body needs rehabilitation training, the other arm can be used to rotate the rope winding rod 22.

[0051] Further, refer to Figure 3 、 Figure 7A limiting slot 35 is defined on one end of the support base 21 near the fixing frame 6, and a limiting block 36 is fixed to the other end of the fixing frame 6 near the support base 21, which is adapted to the limiting slot 35. During twisting exercises, the limiting block 36 is located in the limiting slot 35 and limits the position of the fixing frame 6, thereby preventing the fixing frame 6 from shifting horizontally during twisting exercises.

[0052] According to a further optimized solution, first friction plates 24 are fixedly connected to both side walls of the support seat 21 , and two second friction plates 25 are fixedly mounted on the rope winding rod 22 . The two first friction plates 24 are respectively arranged correspondingly to and in contact with the two second friction plates 25 .

[0053] In some cases, such as during bending training, the lower arm is in a falling state. When the person releases the control of the rope winding rod 22, there is a risk that the lower arm will fall rapidly under the action of gravity. Therefore, a matching first friction plate 24 and second friction plate 25 are provided. During bending training, there is a certain resistance to the movement of the horizontal accommodating sleeve 4. Even if the person releases the control of the rope winding rod 22, the horizontal accommodating sleeve 4 can still fall slowly.

[0054] Alternatively, the structure may employ other damping structures to improve training fit.

[0055] Further optimization plan, refer to Figure 8 The heating element includes an arc-shaped plate 26 sleeved on the outside of the horizontal accommodating sleeve 4. A mounting plate 27 is fixed to the top of the horizontal accommodating sleeve 4. A fixing bolt 28 is threadedly connected to the mounting plate 27. The end of the fixing bolt 28 is threadedly connected to the top of the arc-shaped plate 26. A hot water bag 29 is arranged between the inner wall of the arc-shaped plate 26 and the outer wall of the horizontal accommodating sleeve 4.

[0056] The horizontal accommodating sleeve 4 and the arc-shaped plate 26 are connected by fixing bolts 28 and the arc-shaped plate 26, and a hot water bag 29 is placed in the interlayer between the two to achieve a heating effect.

[0057] Furthermore, a plurality of through slots are provided on the sidewall of the horizontal receiving sleeve 4. The presence of the through slots facilitates the contact of the hot water bag 29 with the arm, thereby providing better heating stimulation.

[0058] In a further optimized solution, support plates 30 are provided at both ends of the horizontal housing sleeve 4. The support plates 30 are close to the vertical housing sleeve 3. The bottom ends of the two support plates 30 are fixed to the top of the base 1. Short rods 31 are fixed to the two side walls of the horizontal housing sleeve 4. The short rods 31 pass through the support plates 30 and are rotatably connected to the support plates 30. The support plates 30 are used to support the horizontal housing sleeve 4, and the rotation of the horizontal housing sleeve 4 is achieved under the action of the short rods 31.

[0059] Further optimizing the solution, an elbow accommodating sleeve 32 is provided at the connection between the vertical accommodating sleeve 3 and the horizontal accommodating sleeve 4, and the elbow accommodating sleeve 32 is fixedly connected to the vertical accommodating sleeve 3. The elbow accommodating sleeve 32 is used to support the elbow of the arm and provide training comfort.

[0060] The above are merely preferred embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An auxiliary device for rehabilitation after an arm fracture, characterized by: include, A base (1) is provided with a frame plate (2) fixed on the top, a vertical accommodating sleeve (3) for accommodating the upper arm is fixed on the side wall of the frame plate (2), and a horizontal accommodating sleeve (4) for accommodating the lower arm is rotatably connected to the bottom of the vertical accommodating sleeve (3); The twisting training component comprises a fixed end of a driving member fixed to an end of the horizontal accommodating sleeve (4) away from the vertical accommodating sleeve (3); the rotating end of the driving member is transmission-connected to a twisting member, the twisting member is located in the horizontal accommodating sleeve (4) and is grasped by a human hand; the rotating end of the driving member is fixed to the fixed end of the driving member via a fixing member; A bending training piece is located on a side of the driving piece away from the horizontal accommodating sleeve (4), a fixed end of the bending training piece is fixedly connected to the top of the base (1), a rotating piece is rotatably connected to the bending training piece, a pull rope (5) is wound around the rotating piece, and the other end of the pull rope (5) is connected to the fixed piece through the frame plate (2) and is used to lift the fixed end of the driving piece; A heating element detachably connected to the outer wall of the horizontal housing sleeve (4); The fixed end of the driving member is a fixed frame (6) fixed to the top of the base (1), and a rotating groove is provided at the top of the fixing frame (6). The rotating end of the driving member is a rotating plate (7) arranged in the rotating groove, and a twisting handle (8) is fixed to the top of the rotating plate (7). A rotating rod (9) is fixed on the axis of the rotating plate (7), and the end of the rotating rod (9) away from the horizontal accommodating sleeve (4) is rotatably connected to the fixed frame (6). The end of the rotating plate (7) close to the horizontal accommodating sleeve (4) is fixed on the axis with a connecting rod (10), and the other end of the connecting rod (10) passes through the fixing frame (6) and extends into the horizontal accommodating sleeve (4) to be fixed to the twisting member. Wherein, under the cooperation of the pull rope (5) and the fixing member, when the fixing member does not fix the rotating end of the driving member, the twisting member can be rotated to perform arm twisting training, and when the fixing member fixes the rotating end of the driving member, the pull rope (5) is driven to move by the rotating member, and the horizontal accommodating sleeve is bent relative to the vertical accommodating sleeve, thereby realizing arm bending training.

2. The auxiliary device for rehabilitation after arm fracture according to claim 1, characterized in that: The torsion member comprises a long plate (11) fixedly connected to one end of the connecting rod (10); the end of the long plate (11) away from the connecting rod (10) is fixedly connected to two oppositely arranged connecting plates (12); and a gripping rod (13) for human hand gripping is fixedly connected between the two connecting plates (12).

3. The auxiliary device for rehabilitation after arm fracture according to claim 1, characterized in that: The twist handle (8) passes through the rotating plate (7), and a cavity (14) is provided in the twist handle (8). The fixing part includes a threaded rod (15) passing through the cavity (14) of the rotating plate (7). The inner wall of the bottom end of the rotating groove is provided with a threaded hole (16) matched and fixed with the end of the threaded rod (15). Two upper and lower limiting rings (17) are fixed to the top of the threaded rod (15). A connecting ring (18) is sleeved on the threaded rod (15). The connecting ring (18) is located between the two limiting rings (17), and the connecting ring (18) is fixed to the pull rope (5).

4. The auxiliary device for rehabilitation after arm fracture according to claim 3, characterized in that: The side walls of the base (1) and the side walls of the frame (2) are provided with a wire groove (19) for accommodating the pull rope (5); the top side wall of the frame (2) is fixedly connected with a support shaft (20); the pull rope (5) is supported by the support shaft (20) and one end is fixedly connected to the connecting ring (18).

5. The auxiliary device for rehabilitation after arm fracture according to claim 1, characterized in that: The bending training piece includes a support seat (21) fixed on the top of the base (1), and the rotating piece includes a rope winding rod (22) passing through the support seat (21). There are two pull ropes (5), and the two pull ropes (5) are located on both sides of the base (1) and are wound around the rope winding rod (22). Rotating handles (23) are respectively fixed to both ends of the rope winding rod (22).

6. The auxiliary device for rehabilitation after arm fracture according to claim 5, characterized in that: The two side walls of the support seat (21) are fixedly connected with first friction plates (24), and the rope winding rod (22) is sleeved with two second friction plates (25) fixed thereon. The two first friction plates (24) are respectively arranged correspondingly to and in contact with the two second friction plates (25).

7. The auxiliary device for rehabilitation after arm fracture according to claim 1, characterized in that: The heating element comprises an arc-shaped plate (26) sleeved on the outside of the horizontal accommodating sleeve (4); a mounting plate (27) is fixedly connected to the top end of the horizontal accommodating sleeve (4); a fixing bolt (28) is threadedly connected to the mounting plate (27); the end of the fixing bolt (28) is threadedly connected to the top end of the arc-shaped plate (26); and a hot water bag (29) is provided between the inner wall of the arc-shaped plate (26) and the outer wall of the horizontal accommodating sleeve (4).

8. The auxiliary device for rehabilitation after arm fracture according to claim 1, characterized in that: Support plates (30) are respectively provided at both ends of the horizontal accommodating sleeve (4), the support plates (30) are close to the vertical accommodating sleeve (3), the bottom ends of the two support plates (30) are fixedly connected to the top end of the base (1), and short rods (31) are fixedly connected to the two side walls of the horizontal accommodating sleeve (4), and the short rods (31) pass through the support plates (30) and are rotatably connected to the support plates (30).

9. The auxiliary device for rehabilitation after arm fracture according to claim 1, characterized in that: An elbow accommodating sleeve (32) is provided at the connection between the vertical accommodating sleeve (3) and the horizontal accommodating sleeve (4), and the elbow accommodating sleeve (32) is fixedly connected to the vertical accommodating sleeve (3).

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