Medical lumbar puncture body position fixing device

Abstract

The invention relates to the technical field of lumbar puncture of lumbar puncture bodies, and discloses a medical lumbar puncture body position fixing device which comprises a platform, a bottom column is fixedly connected to the bottom of the platform, a moving device is fixedly connected to the top of the platform, and a fixing plate is movably connected to the outer wall of the moving device. A motor is fixedly connected to the outer wall of the platform, a first sliding groove is formed in the top of the platform, a second sliding groove is formed in the top of the platform, a locking assembly is fixedly connected to the bottom of the platform, and the moving mechanism comprises a first annular plate movably connected to the inner wall of the first sliding groove. The outer wall of the first annular plate is fixedly connected with a movable plate, by arranging the stress assembly, under the movement of the stress ring and the blocking plate, the adjustment of the human body position can be completed, the number of parts needing to fix the human body is reduced, the feeling of a user is improved, and the operation process of body position fixing is simplified.

Description

Technical Field

[0001] The invention relates to the technical field of lumbar puncture, in particular to a medical lumbar puncture body position fixing device. Background Art

[0002] Lumbar puncture is a common clinical diagnostic procedure. It can be used to diagnose various inflammatory diseases of the central nervous system, vascular diseases, spinal cord lesions, suspected intracranial space-occupying lesions, undiagnosed neurological diseases, pneumoencephalography, myelography, etc. It is also used to drain (decompress) cerebrospinal fluid due to excessive pressure and inject drugs to treat central nervous system diseases.

[0003] The patent application with application number CN202322048005.9 discloses a lumbar puncture position fixing device, including a puncture table main body, an adjusting rod is fixedly installed inside the puncture table main body, and the medical staff makes the patient lie on his side on the puncture table main body. When the patient lies on his side and curls up on the puncture table main body, the staff pulls out the baffle, transfers the first fixing device to the top of the puncture table main body, and transfers the limiting plate at the bottom of the first fixing device to the inside of the fixed bracket inside the puncture table main body. The clamping plate is telescopically adjusted by the telescopic rod, and the clamping plate is transferred into the clamping slot to clamp and fix the limiting plate, so as to fix the first fixing device to the top of the puncture table main body.

[0004] When performing lumbar puncture on a human body, the existing equipment fixes the chest and legs of the human body. Although this operation direction can adjust the human body position to a posture suitable for lumbar puncture, the forced fixation method during movement will cause discomfort to the user, which is not conducive to the normal use of the equipment. Summary of the invention

[0005] The purpose of the present invention is to provide a medical lumbar puncture position fixing device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a medical lumbar puncture position fixing device, comprising a platform, the bottom of the platform is fixedly connected to a bottom column, the top of the platform is fixedly connected to a moving device, the outer wall of the moving device is movably connected to a fixing plate, the outer wall of the platform is fixedly connected to a motor, the top of the platform is provided with a first slide groove, the top of the platform is provided with a second slide groove, the bottom of the platform is fixedly connected to a locking component, and further comprising: The movable mechanism comprises an annular plate 1 movably connected to the inner wall of a slide groove, the outer wall of the annular plate 1 is fixedly connected with a movable plate, the outer wall of the movable plate is movably connected to the slide groove 2, a circular hole 2 is opened on the top of the movable plate, the inner wall of the annular plate 1 is fixedly connected with a sliding column 1, the outer wall of the sliding column 1 is movably connected with a force-bearing component, the outer wall of the sliding column 1 is sleeved with a spring 2, one end of the spring 2 is fixedly connected to the annular plate 1, the movable plate blocks the top space of the slide groove 1 to avoid the user's thigh being suspended in the air, and plays the role of placing the user's thigh. By setting the movable mechanism, the force-bearing component is within a movable range, so that different people can adjust the position of the force-bearing component according to their own waist circumference or leg circumference, avoid forced movement after fixation, cause damage to the human body, and ensure the normal implementation of body position fixation.

[0007] According to the above technical solution, the inner wall of the slide groove is rotatably connected with a threaded column through a bearing, the output end of the motor is fixedly connected to the threaded column, and the outer wall of the threaded column is threadedly connected to an annular plate. The threaded column is driven to rotate by the motor, thereby driving the force-bearing component to move.

[0008] According to the above technical solution, the locking assembly includes a locking column, a circular hole 1 is opened at the top of the slide groove 2, the outer wall of the locking column is movably connected to the circular hole 1, the outer wall of the locking column is sleeved with a spring 1, the bottom of the locking column is fixedly connected to a connecting plate 1, the top of the spring 1 is fixedly connected to the platform, the bottom of the spring 1 is fixedly connected to the connecting plate 1, and the outer wall of the connecting plate 1 is fixedly connected to a force-bearing plate 1, and the locking column will extend from the circular hole 1 and embed into the circular hole 2 when the circular hole 2 on the movable plate coincides with the circular hole 1, thereby playing the role of fixing the moving mechanism.

[0009] According to the above technical solution, a push rod is fixedly connected to the bottom of the platform, and an annular rod is fixedly connected to the bottom of the push rod. Before the state of the moving mechanism needs to be released, the push rod is started to drive the annular rod to move downward, and then the locking column moves downward, thereby changing the state of the locking assembly. By setting the locking assembly, when the moving mechanism moves to the top, the position of the moving mechanism will be automatically locked, which can ensure that the human body will not move, and ensure that the medical staff will not move when performing lumbar puncture, thereby ensuring the normal progress of the lumbar puncture.

[0010] According to the above technical solution, the force-bearing component includes a sliding ring, the inner wall of the sliding ring is movably connected to the sliding column one, the end of the spring two away from the annular plate one is fixedly connected to the sliding ring, the inner wall of the sliding ring is fixedly connected with a limiting ring, the inner wall of the sliding ring is rotatably connected with a connecting column through a bearing, and the bottom of the connecting column is fixedly connected with a blocking block, and the limiting ring, with the cooperation of the blocking block, plays a role in limiting the deflection angle of the connecting column, so that the deflection angle of the force-bearing ring can be controlled, and it is prevented that the user forcibly flattens the deflection angle of the force-bearing ring when the force-bearing ring is moving, thereby affecting the fixing effect of the equipment.

[0011] According to the above technical solution, the outer wall of the connecting column is fixedly connected with a connecting plate 2, and the end of the connecting plate 2 away from the connecting column is fixedly connected with a force ring, and the top of the connecting column is fixedly connected with a blocking plate. The force ring moves along the trajectory of the sliding column 1 under the pressure of the user, and the elastic force of the spring 2 allows the force ring to be located on the inner side of the user's thigh, thereby fixing the thigh. By setting a force-bearing component, the position of the human body can be adjusted under the movement of the force ring and the blocking plate, reducing the part of the human body that needs to be fixed, improving the user's feeling, and simplifying the operation process of body position fixation.

[0012] According to the above technical solution, the bottom of the sliding ring is fixedly connected with a locking plate 2, the top of the sliding groove 1 is fixedly connected with a bottom plate, the top of the bottom plate is fixedly connected with a locking plate 1, and the outer wall of the locking plate 1 is movably connected with the locking plate 2. As the moving mechanism moves, the locking plate 1 at the bottom will be embedded in multiple locking plates 2, thereby fixing the position of the force-bearing component on the sliding column 1.

[0013] The cam is secured to the bottom of the slide block and is adapted to engage the slide block when the slide block is in a position to move relative to the slide block.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The present invention arranges a force-bearing component, and the position of the human body can be adjusted by moving the force-bearing ring and the blocking plate, thereby reducing the parts that need to be fixed on the human body, improving the user's feeling, and simplifying the operation process of body position fixation.

[0015] 2. The present invention sets a moving mechanism to allow the force-bearing component to be within a movable range, so that different people can adjust the position of the force-bearing component according to their own waist or leg circumference, avoiding forced movement after fixation to cause damage to the human body and ensuring normal body position fixation.

[0016] 3. The present invention sets a locking component, which automatically locks the position of the moving mechanism when the moving mechanism moves to the top, thereby ensuring that the human body will not move again and that the human body will not move when medical staff perform lumbar puncture, thereby ensuring the normal progress of lumbar puncture.

[0017] 4. The present invention sets a force-bearing component, and when the moving mechanism moves to the top, the deflection angle of the force ring and the moving position of the force-bearing component on the sliding column 1 are automatically fixed, ensuring that when medical staff perform lumbar puncture, there will be no human body movement, ensuring the normal progress of lumbar puncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the platform structure of the present invention; Figure 3 It is a bottom schematic diagram of the overall structure of the present invention; Figure 4 is a schematic diagram of a locking assembly of the present invention; Figure 5 is a schematic diagram of a locking plate of the present invention; Figure 6 is a schematic diagram of the mobile mechanism of the present invention; Figure 7 is a schematic diagram of a force-bearing component of the present invention; Figure 8 It is a schematic diagram of the rotation structure of the force-bearing component of the present invention; Fig. 9 It is a schematic diagram of the internal structure of the force-bearing component of the present invention; Fig.10 is a cross-sectional view of the bottom structure of the force-bearing component of the present invention; In the figure: 1, platform; 101, bottom column; 102, moving device; 103, fixed plate; 104, motor; 105, slide groove 1; 106, threaded column; 107, slide groove 2; 108, round hole 1; 109, bottom plate; 1010, locking plate 1; 11, locking assembly; 111, push rod; 112, annular rod; 113, locking column; 114, connecting plate 1; 115, spring 1; 116, force plate 1; 2, moving mechanism; 201, annular plate 1; 202, movable plate ; 203, round hole two; 204, sliding column one; 205, spring two; 21, force-bearing component; 211, sliding ring; 212, locking plate two; 213, limiting ring; 214, connecting column; 215, connecting plate two; 216, force ring; 217, blocking plate; 218, friction ring one; 219, blocking block; 2110, force plate two; 2111, sliding column two; 2112, annular plate two; 2113, elastic component; 2114, connecting plate three; 2115, friction ring two. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example 1: See Figure 1-Figure 4The present invention provides a technical solution: a medical lumbar puncture position fixing device, comprising a platform 1, a bottom column 101 is fixedly connected to the bottom of the platform 1, a moving device 102 is fixedly connected to the top of the platform 1, a fixing plate 103 is movably connected to the outer wall of the moving device 102, a motor 104 is fixedly connected to the outer wall of the platform 1, a slide groove 105 is provided on the top of the platform 1, a slide groove 2 107 is provided on the top of the platform 1, a locking component 11 is fixedly connected to the bottom of the platform 1, a threaded column 106 is rotatably connected to the inner wall of the slide groove 105 through a bearing, and the output end of the motor 104 is fixedly connected to the threaded column 106, The outer wall of the threaded column 106 is threadedly connected to the annular plate 201, and the threaded column 106 is driven by the motor 104 to rotate, thereby driving the force-bearing component 21 to move. When lumbar puncture is required for a human body, the moving device 102 is first started, and the position of the fixed plate 103 is adjusted according to the height of the person being examined. The person being examined is then allowed to lie on his side on the platform 1 with his thighs placed on the moving mechanism 2. The motor 104 is then started to drive the threaded column 106 to rotate. The rotating threaded column 106 drives the moving mechanism 2 to move, allowing the human body to be coiled up and the body position to be fixed, thereby facilitating subsequent puncture operations.

[0023] The locking assembly 11 includes a locking column 113, a circular hole 108 is formed on the top of the second slide groove 107, the outer wall of the locking column 113 is movably connected to the circular hole 108, the outer wall of the locking column 113 is sleeved with a spring 115, the bottom of the locking column 113 is fixedly connected to a connecting plate 114, the top of the spring 115 is fixedly connected to the platform 1, the bottom of the spring 115 is fixedly connected to the connecting plate 114, the outer wall of the connecting plate 114 is fixedly connected to a force plate 116, and the locking column 113 will extend from the circular hole 108 and embed into the circular hole 203 on the movable plate 202 when the circular hole 203 on the movable plate 202 coincides with the circular hole 108, so as to fix the moving mechanism 2, and the bottom of the platform 1 is fixedly connected to a push rod 111, and the push rod 111 The bottom is fixedly connected with an annular rod 112. Before the state of the moving mechanism 2 needs to be released, the starting push rod 111 drives the annular rod 112 to move downward, and then the locking column 113 moves downward, which plays a role in changing the state of the locking assembly 11. As the moving mechanism 2 extends the threaded column 106 and moves away from one end of the motor 104, the top of the locking column 113 will no longer be blocked, and then it will extend from the circular hole 108 under the elastic force of the spring to fix the moving device 102. After the medical staff completes the puncture operation on the examinee, the starting push rod 111 drives the annular rod 112 to move downward, and the moving annular rod 112 will drive the locking column 113 to move downward through the force plate 116 and the connecting plate 114, thereby releasing the fixation of the moving mechanism 2.

[0024] Example 2: Based on Example 1, please refer to Figure 5-Figure 10, the moving mechanism 2 includes an annular plate 201 movably connected to the inner wall of the slide groove 105, the outer wall of the annular plate 201 is fixedly connected with a movable plate 202, the outer wall of the movable plate 202 is movably connected to the slide groove 107, a circular hole 203 is opened on the top of the movable plate 202, the inner wall of the annular plate 201 is fixedly connected with a sliding column 204, the outer wall of the sliding column 204 is movably connected with a force-bearing component 21, the outer wall of the sliding column 204 is sleeved with a spring 205, one end of the spring 205 is fixedly connected to the annular plate 201, the movable plate 202 The top space of the slide groove 105 is blocked to prevent the user's thigh from being suspended in the air, and the user's thigh is placed. As the threaded column 106 drives the annular plate 201 to move, the moving annular plate 201 will drive the force-bearing component 21 to move together through the sliding column 204. At this time, the force-bearing component 21 will be against the inner side of the thigh of the person being inspected. As the annular plate 201 continues to move, the force-bearing component 21 will move outward along the sliding column 204. At the same time, under the elastic force of the spring 205, the force-bearing component 21 is attached to the inner side of the thigh, which has a fixing effect.

[0025] The force-bearing component 21 includes a sliding ring 211, the inner wall of the sliding ring 211 is movably connected to the sliding column 1 204, the end of the spring 205 away from the annular plate 1 201 is fixedly connected to the sliding ring 211, the inner wall of the sliding ring 211 is fixedly connected with a limiting ring 213, the inner wall of the sliding ring 211 is rotatably connected to the connecting column 214 through a bearing, the bottom of the connecting column 214 is fixedly connected with a blocking block 219, and the limiting ring 213, in cooperation with the blocking block 219, plays a role in limiting the deflection angle of the connecting column 214, and the outer wall of the connecting column 214 is fixedly connected with a connecting plate 215, and the connecting plate 215 is away from the connecting column 214. A force ring 216 is fixedly connected to one end, and a blocking plate 217 is fixedly connected to the top of the connecting column 214. The force ring 216 moves along the trajectory of the sliding column 204 under the pressure of the user, and the elastic force of the spring 205 allows the force ring 216 to be located on the inner side of the user's thigh, thereby fixing the thigh. As the moving mechanism 2 drives the force-bearing component 21 to move, the force ring 216 will stick to the inner side of the thigh of the person being inspected. In this way, under the push of the force ring 216, the thigh of the person being inspected will bend, and at the same time, the blocking plate 217 on the top of the force ring 216 can prevent the thigh of the person being inspected from leaving the top.

[0026] The bottom of the sliding ring 211 is fixedly connected with a locking plate 212, the top of the slide groove 105 is fixedly connected with the bottom plate 109, the top of the bottom plate 109 is fixedly connected with a locking plate 1010, the outer wall of the locking plate 1010 is movably connected with the locking plate 212, as the moving mechanism 2 moves, the locking plate 1010 at the bottom will be embedded in multiple locking plates 212, so as to fix the position of the force-bearing component 21 on the sliding column 204, when the force-bearing component 21 moves to the end of the bolt column away from the motor 104 under the drive of the moving component, the locking plate 212 at the bottom of the sliding ring 211 will be embedded between any two locking plates 1010, so that the position of the force-bearing component 21 on the sliding column 204 is fixed and can no longer move left and right, thereby fixing the position of the thigh.

[0027] The inner wall of the sliding ring 211 is movably connected with a sliding column 2111, the bottom of the sliding column 2111 is fixedly connected with a force plate 2110, the top of the sliding column 2111 is fixedly connected with an annular plate 2112, the bottom of the annular plate 2112 is fixedly connected with an elastic component 2113, the bottom of the elastic component 2113 is fixedly connected to the sliding ring 211, the inner wall of the annular plate 2112 is fixedly connected with a connecting plate 3 2114, the end of the connecting plate 3 2114 away from the annular plate 2112 is fixedly connected to the extrusion friction plate 2, the bottom of the connecting column 214 is fixedly connected with a friction ring 1 218, after the force component 21 moves to the other end of the threaded column 106, the force plate 2110 at the bottom will be squeezed by the locking plate 1 1010 It is pressed down and moved upward, and then the friction ring 1 218 and the friction ring 2 2115 are fitted together, which plays a role in fixing the deflection angle of the force ring 216. When the force-bearing component 21 is moved to the end of the bolt column away from the motor 104 under the drive of the moving component, the bottom force plate 2 2110 will also move upward under the pressure of the locking plate 1 1010, and the moving force plate 2110 will drive the annular plate 2112 to move upward through the sliding column 2111, and the upward moving annular plate 2112 drives the friction ring 2 2115 to fit with the friction ring 1 218 through the connecting plate 3 2114, so that the connecting column 214 can no longer deflect, and then the deflection angle of the force ring 216 is fixed, thereby enhancing the fixing effect of the human body position of the equipment.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A medical lumbar puncture position fixing device, comprising a platform (1), wherein the bottom of the platform (1) is fixedly connected to a bottom column (101), the top of the platform (1) is fixedly connected to a moving device (102), the outer wall of the moving device (102) is movably connected to a fixing plate (103), the outer wall of the platform (1) is fixedly connected to a motor (104), the top of the platform (1) is provided with a first slide groove (105), the top of the platform (1) is provided with a second slide groove (107), the bottom of the platform (1) is fixedly connected to a locking component (11), characterized in that: Also includes: A moving mechanism (2), the moving mechanism (2) comprising an annular plate (201) movably connected to the inner wall of a slide groove (105), the outer wall of the annular plate (201) being fixedly connected to a movable plate (202), the outer wall of the movable plate (202) being movably connected to a slide groove (107), a circular hole (203) being provided on the top of the movable plate (202), the inner wall of the annular plate (201) being fixedly connected to a sliding column (204), the outer wall of the sliding column (204) being movably connected to a force-bearing component (21), the outer wall of the sliding column (204) being sleeved with a spring (205), one end of the spring (205) being fixedly connected to the annular plate (201), the movable plate (202) shielding the top space of the slide groove (105) to serve as a place for the thigh of a user.

2. The medical lumbar puncture position fixation device according to claim 1, characterized in that: The inner wall of the slide groove (105) is rotatably connected to a threaded column (106) via a bearing, the output end of the motor (104) is fixedly connected to the threaded column (106), and the outer wall of the threaded column (106) is threadedly connected to the annular plate (201). The threaded column (106) is driven to rotate by the motor (104), thereby driving the force-bearing component (21) to move.

3. The medical lumbar puncture position fixation device according to claim 1, characterized in that: The locking assembly (11) comprises a locking column (113), a circular hole (108) is formed at the top of the second slide groove (107), an outer wall of the locking column (113) is movably connected to the circular hole (108), a spring (115) is sleeved on the outer wall of the locking column (113), a connecting plate (114) is fixedly connected to the bottom of the locking column (113), the top of the spring (115) is fixedly connected to the platform (1), the bottom of the spring (115) is fixedly connected to the connecting plate (114), and a force-bearing plate (116) is fixedly connected to the outer wall of the connecting plate (114). When the circular hole (203) on the movable plate (202) overlaps with the circular hole (108), the locking column (113) extends out from the circular hole (108) and is embedded in the circular hole (203), thereby playing the role of fixing the movable mechanism (2).

4. The medical lumbar puncture position fixation device according to claim 3, characterized in that: The bottom of the platform (1) is fixedly connected to a push rod (111), and the bottom of the push rod (111) is fixedly connected to an annular rod (112). Before the state of the moving mechanism (2) needs to be released, the push rod (111) is started to drive the annular rod (112) to move downward. The movement of the annular rod (112) causes the locking column (113) to move downward, thereby changing the state of the locking assembly (11).

5. The medical lumbar puncture position fixation device according to claim 4, characterized in that: The force-bearing component (21) comprises a sliding ring (211), the inner wall of which is movably connected to a sliding column (204), the end of the spring (205) away from the annular plate (201) is fixedly connected to the sliding ring (211), the inner wall of the sliding ring (211) is fixedly connected to a limiting ring (213), the inner wall of the sliding ring (211) is rotatably connected to a connecting column (214) via a bearing, the bottom of the connecting column (214) is fixedly connected to a blocking block (219), and the limiting ring (213), in cooperation with the blocking block (219), plays a role in limiting the deflection angle of the connecting column (214).

6. The medical lumbar puncture body position fixation device according to claim 5, characterized in that: The outer wall of the connecting column (214) is fixedly connected to a connecting plate 2 (215); an end of the connecting plate 2 (215) away from the connecting column (214) is fixedly connected to a force ring (216); the top of the connecting column (214) is fixedly connected to a blocking plate (217); the force ring (216) moves along the trajectory of the sliding column 1 (204) under the pressure of the user, and the elastic force of the spring 2 (205) allows the force ring (216) to be located on the inner side of the user's thigh, thereby fixing the thigh.

7. The medical lumbar puncture body position fixation device according to claim 6, characterized in that: The bottom of the sliding ring (211) is fixedly connected to a locking plate 2 (212), the top of the sliding groove 1 (105) is fixedly connected to a bottom plate (109), the top of the bottom plate (109) is fixedly connected to a locking plate 1 (1010), and the outer wall of the locking plate 1 (1010) is movably connected to the locking plate 2 (212). As the moving mechanism (2) moves, the locking plate 1 (1010) at the bottom will be embedded in the multiple locking plates 2 (212), thereby fixing the position of the force-bearing component (21) on the sliding column 1 (204).

8. The medical lumbar puncture body position fixation device according to claim 7, characterized in that: The inner wall of the sliding ring (211) is movably connected to a sliding column 2 (2111); the bottom of the sliding column 2 (2111) is fixedly connected to a force-bearing plate 2 (2110); the top of the sliding column 2 (2111) is fixedly connected to an annular plate 2 (2112); the bottom of the annular plate 2 (2112) is fixedly connected to an elastic component (2113); the bottom of the elastic component (2113) is fixedly connected to the sliding ring (211); the inner wall of the annular plate 2 (2112) is fixedly connected to a connecting plate 3 (2110); 2114), the end of the connecting plate three (2114) away from the annular plate two (2112) is fixedly connected to the extrusion friction plate two, and the bottom of the connecting column (214) is fixedly connected with the friction ring one (218). After the force-bearing component (21) moves to the other end of the threaded column (106), the force-bearing plate two (2110) at the bottom will move upward under the extrusion of the locking plate one (1010), so that the friction ring one (218) and the friction ring two (2115) fit together, thereby playing a role in fixing the deflection angle of the force-bearing ring (216).

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