Support mechanism

Abstract

The present invention provides a support mechanism for supporting a communication base station in a mine, the support mechanism comprising: a rotation adjustment component, the rotation adjustment component comprising a mounting seat rotatable around a first axis, the communication base station being arranged on the mounting seat; a support component, arranged below the rotation adjustment component and connected to the rotation adjustment component, the support component comprising a support frame, the angle between the support frame and the horizontal plane being adjustable, the support frame being telescopically arranged, so as to drive the rotation adjustment component to rise and fall through the support frame. The present invention solves the problem in the prior art that the angle adjustment of the fusion base station in a mine is inconvenient when in use.

Description

Technical Field

[0001] The invention relates to the technical field of mine communication equipment support, and in particular to a support mechanism. Background Art

[0002] The multi-communication standard fusion base station integrates multiple wireless communication devices into a comprehensive device to improve the comprehensive utilization rate of the equipment. The fusion base station realizes the mine's 4G wireless communication, industrial network function, WiFi wireless access function, and UWB precise positioning function; the multi-communication standard fusion base station saves a lot of construction capital investment and safety capital investment for the mine, and greatly improves the economic benefits of intelligent and information construction of coal mines.

[0003] At present, when a multi-communication standard fusion base station performs communication processing underground in a coal mine, it is usually fixedly installed in a designated area for use. At this time, due to the complex environment underground in a coal mine, the placement stability of the multi-communication standard fusion base station is particularly important. Moreover, it is usually in a fixed placement state. When it is necessary to adjust its use angle, it is necessary to first release the limiting installation effect, and then adjust its angle. After the adjustment is completed, it is firmly limited. At this time, the operation is more complicated, which affects the convenience of using the multi-communication standard fusion base station. Summary of the invention

[0004] The main purpose of the present invention is to provide a supporting mechanism to solve the problem of inconvenient angle adjustment of the fusion base station in the mine during use in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a supporting mechanism for supporting a communication base station in a mine, the supporting mechanism comprising: a rotation adjustment component, the rotation adjustment component comprising a mounting seat rotatable around a first axis, and the communication base station is arranged on the mounting seat; a supporting component, which is arranged below the rotation adjustment component and connected to the rotation adjustment component, the supporting component comprising a support frame, the angle between the support frame and the horizontal plane is adjustable, and the support frame is telescopically arranged to drive the rotation adjustment component to rise and fall through the support frame.

[0006] Furthermore, the rotation adjustment component includes: a rotating shaft connected to the mounting seat; a first bevel gear sleeved on the rotating shaft and connected to the rotating shaft; a second bevel gear meshing with the first bevel gear; a rotating armrest arranged on the side of the second bevel gear and connected to the second bevel gear, and the second bevel gear is driven to rotate by rotating the rotating armrest.

[0007] Furthermore, the rotation adjustment component also includes: a first limiting component, which is sleeved on the rotating shaft and connected to the rotating shaft, and the first limiting component is provided with a plurality of grooves, and the plurality of grooves are arranged at intervals along the circumference of the first limiting component; a second limiting component, which is arranged on the side of the first limiting component, and a limiting protrusion is arranged on the second limiting component, and the second limiting component is movably arranged in a direction close to or away from the first limiting component, so that the limiting protrusion can be inserted into any one of the plurality of grooves, or the limiting protrusion can be pulled out of the groove.

[0008] Furthermore, the supporting mechanism also includes a protective box body, and the first limiting component and the second limiting component are both arranged in the protective box body. The rotation adjustment component also includes: a pulling component, at least a portion of the pulling component is passed through the through hole on the protective box body and is connected to the second limiting component, and the second limiting component is driven to move by the pulling component; a first elastic component, and both ends of the first elastic component are respectively connected to the inner wall surface of the protective box body and the second limiting component.

[0009] Furthermore, the support mechanism also includes: a support seat, on which the rotation adjustment assembly is arranged; a support frame is arranged on the support seat and hinged to the support seat, and there are multiple support frames, which are arranged at intervals along the circumference of the support seat.

[0010] Furthermore, the support assembly also includes: a mounting rod connected to the support seat; a pressing block mounted on the mounting rod, the pressing block being movably arranged along the extension direction of the mounting rod; and a connecting rod, the two ends of the connecting rod being respectively hinged to the support frame and the pressing block.

[0011] Furthermore, an external thread is provided on the mounting rod, and the support assembly also includes: an adjusting block, which is sleeved on the mounting rod and threadedly connected to the mounting rod, the adjusting block is located below the pressing block, and the pressing block is pushed to move by the adjusting block; a second elastic component, which is sleeved on the mounting rod, and the two ends of the second elastic component are respectively connected to the support seat and the pressing block.

[0012] Furthermore, the supporting mechanism also includes: a card seat, which is arranged on the mounting seat, and a mounting groove is arranged on the card seat, and the communication base station is arranged in the mounting groove; a support rod, and both ends of the support rod are respectively hinged to the communication base station and the card seat.

[0013] Furthermore, a clearance groove is arranged on the end surface opposite to the mounting seat, and the support mechanism also includes: a buffer pad fixedly mounted on the mounting seat, at least part of the buffer pad is embedded in the clearance groove, and the buffer pad and the clearance groove are interference fit.

[0014] Furthermore, a fixing portion is provided on the base, and the fixing portion is arranged on the side of the mounting groove. The supporting mechanism also includes: a fixing block, which is arranged in the fixing portion, the supporting rod is hinged to the fixing block, and an extension plate is provided at the edge of the fixing block, and the extension plate extends in a direction close to the mounting base relative to the fixing block, and a slot is provided on the bottom surface of the extension plate, and at least a portion of the slot is engaged with the buffer pad.

[0015] The technical solution of the present invention is applied, and the support mechanism is used to support the communication base station in the mine, wherein the support mechanism includes a rotation adjustment component and a support component, the rotation adjustment component includes a mounting seat rotatable around a first axis, and the communication base station is arranged on the mounting seat; the support component is arranged below the rotation adjustment component and connected to the rotation adjustment component, and the support component includes a support frame, and the angle between the support frame and the horizontal plane is adjustable, and the support frame is telescopically arranged to drive the rotation adjustment component to rise and fall through the support frame. During use, the communication base station is driven to rotate around the first axis by rotating the mounting seat to adjust the angle of the communication base station, and the height of the communication base station and the stability of the communication base station are adjusted by adjusting the angle between the support frame and the horizontal plane and the telescopic displacement of the support frame. This is convenient, simple and quick to operate, and the position of the communication base station can be adjusted in real time according to the actual construction environment, so that the communication base station maintains good signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of a first viewing angle of a support mechanism according to the present invention is shown;

[0018] Figure 2 A schematic structural diagram of a second viewing angle of the support mechanism according to the present invention is shown;

[0019] Figure 3 A schematic structural diagram showing the cooperation between the support assembly and the rotation adjustment assembly of the support mechanism according to the present invention from a first viewing angle;

[0020] Figure 4 Shown according to Figure 3 An enlarged view of part A;

[0021] Figure 5 A schematic structural diagram showing a second viewing angle of cooperation between a support assembly and a rotation adjustment assembly of a support mechanism according to the present invention;

[0022] Figure 6 A structural schematic diagram of a holder of a supporting mechanism according to the present invention is shown.

[0023] The above drawings include the following reference numerals:

[0024] 100, communication base station; 1, rotation adjustment component; 10, mounting seat; 11, rotation shaft; 12, first bevel gear; 13, second bevel gear; 14, rotating armrest; 15, first limiting component; 150, groove; 16, second limiting component; 160, limiting protrusion; 17, pulling component; 18, first elastic component;

[0025] 2. Support assembly; 20. Support frame; 201. Sleeve; 202. Moving rod; 21. Mounting rod; 22. Pressing block; 23. Connecting rod; 24. Adjusting block; 25. Second elastic component;

[0026] 3. Protective box; 4. Support seat; 5. Card seat; 50. Installation slot; 51. Make way groove; 52. Fixing part; 53. Stop body; 54. Installation body; 6. Support rod; 7. Buffer pad; 8. Fixed block; 80. Extension plate; 801. Card slot. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] Please refer to Figures 1 to 6 The present invention provides a support mechanism for supporting a communication base station 100 in a mine, and the support mechanism includes: a rotation adjustment component 1, the rotation adjustment component 1 includes a mounting seat 10 rotatable around a first axis, and the communication base station 100 is arranged on the mounting seat 10; a support component 2, which is arranged below the rotation adjustment component 1 and connected to the rotation adjustment component 1, and the support component 2 includes a support frame 20, and the angle between the support frame 20 and the horizontal plane is adjustable, and the support frame 20 is telescopically arranged to drive the rotation adjustment component 1 to rise and fall through the support frame 20.

[0029] The support mechanism provided by the present invention is used to support a communication base station 100 in a mine, wherein the support mechanism includes a rotation adjustment component 1 and a support component 2, wherein the rotation adjustment component 1 includes a mounting seat 10 that can rotate around a first axis, and the communication base station 100 is arranged on the mounting seat 10; the support component 2 is arranged below the rotation adjustment component 1 and connected to the rotation adjustment component 1, and the support component 2 includes a support frame 20, and the angle between the support frame 20 and the horizontal plane is adjustable, and the support frame 20 is telescopically arranged to drive the rotation adjustment component 1 to rise and fall through the support frame 20. During use, the communication base station 100 is driven to rotate around the first axis by rotating the mounting seat 10 to adjust the angle of the communication base station 100, and the height of the communication base station 100 and the stability of the communication base station 100 are adjusted by adjusting the angle between the support frame 20 and the horizontal plane and the telescopic displacement of the support frame 20, so that the operation is simple and convenient, and the position of the communication base station 100 can be adjusted in real time according to the actual construction environment, so that the communication base station 100 maintains good signal transmission.

[0030] Specifically, in order to conveniently drive the communication base station 100 to rotate, the rotation adjustment assembly 1 includes: a rotation shaft 11, connected to the mounting seat 10; a first bevel gear 12, sleeved on the rotation shaft 11 and connected to the rotation shaft 11; a second bevel gear 13, meshing with the first bevel gear 12; a rotating armrest 14, arranged on the side of the second bevel gear 13 and connected to the second bevel gear 13, and the second bevel gear 13 is driven to rotate by rotating the rotating armrest 14. Through the meshing of the first bevel gear 12 and the second bevel gear 13, the rotation axis of the rotating armrest 14 and the rotation axis of the second bevel gear 13 can be set to be perpendicular to each other, which makes it more convenient for operators to operate the rotating armrest 14, and the space occupied by the bevel gear is small, making the overall structure more compact.

[0031] like Figure 3 and Figure 4As shown, the rotation adjustment assembly 1 also includes: a first limiting component 15, which is sleeved on the rotating shaft 11 and connected to the rotating shaft 11, and a plurality of grooves 150 are arranged on the first limiting component 15, and the plurality of grooves 150 are arranged at intervals along the circumference of the first limiting component 15; a second limiting component 16, which is arranged on the side of the first limiting component 15, and a limiting protrusion 160 is arranged on the second limiting component 16, and the second limiting component 16 is movably arranged in a direction close to or away from the first limiting component 15, so that the limiting protrusion 160 can be inserted into any one of the plurality of grooves 150, or the limiting protrusion 160 can be pulled out of the groove 150. This arrangement can utilize the mutual blocking between the first limiting component 15 and the second limiting component 16 to prevent the rotating shaft 11 from rotating, thereby ensuring the stability of the communication base station 100. When the position of the communication base station 100 needs to be adjusted, the second limiting component 16 only needs to be moved in a direction away from the first limiting component 15, so that the limiting protrusion 160 is pulled out of the groove 150, and then the rotating armrest 14 can be rotated. Preferably, the first limiting component 15 is a gear.

[0032] In order to further ensure the blocking effect of the second limiting component 16 on the first limiting component 15, the support mechanism also includes a protective box body 3, the first limiting component 15 and the second limiting component 16 are both arranged in the protective box body 3, and the rotation adjustment assembly 1 also includes: a pulling component 17, at least part of which is inserted into the through hole on the protective box body 3 and connected to the second limiting component 16, and the second limiting component 16 is driven to move by the pulling component 17; a first elastic component 18, the two ends of which are respectively connected to the inner wall surface of the protective box body 3 and the second limiting component 16. Among them, the second limiting component 16 is prevented from moving in the circumferential direction by the blocking effect between the pulling component 17 and the hole wall surface of the through hole in the circumferential direction, so that it blocks the first limiting component 15 in the circumferential direction, and at the same time, the pulling component 17 is guided by the through hole to move the second limiting component 16 in the horizontal direction, and the elastic restoring force of the first elastic component 18 is used to push the second limiting component 16 to move in the direction close to the first limiting component 15. Preferably, the first elastic component 18 is a spring, and there are multiple first elastic components 18 , which are arranged in parallel, wherein one first elastic component 18 among the multiple first elastic components 18 is sleeved on the pulling component 17 .

[0033] In the embodiment provided by the present invention, the second limiting component 16 includes a stop end face and an abutting end face, the stop end face is an arc surface, a plurality of limiting protrusions 160 are arranged on the stop end face, the abutting end face is a plane, the first elastic component 18 is connected to the abutting end face, and the first limiting component 15 is a gear. In this way, when the rotating shaft 11 is rotated, the first limiting component 15 rotates with the rotating shaft 11. No matter to which angle it is rotated, the limiting protrusion 160 on the second limiting component 16 can block the first limiting component 15 to ensure the stable installation of the communication base station 100.

[0034] like Figure 5 As shown, the support mechanism also includes a support seat 4, and the rotation adjustment component 1 is arranged on the support seat 4; the support frame 20 is arranged on the support seat 4 and is hinged with the support seat 4, and there are multiple support frames 20, and the multiple support frames 20 are arranged at intervals along the circumference of the support seat 4. By rotating the support frame 20 relative to the support seat 4, the angle between the support frame 20 and the horizontal plane is adjusted to adjust the height of the communication base station 100. Specifically, a damping is provided at the hinge between the support seat 4 and the support frame 20 to ensure the support stability of the support frame 20.

[0035] In the specific implementation process, the support assembly 2 also includes: a mounting rod 21, connected to the support seat 4; a pressing block 22, which is sleeved on the mounting rod 21, and the pressing block 22 is movably arranged along the extension direction of the mounting rod 21; a connecting rod 23, and the two ends of the connecting rod 23 are respectively hinged to the support frame 20 and the pressing block 22. When the pressing block 22 moves along the extension direction of the mounting rod 21, it drives the connecting rod 23 to move up and down, and then drives the support frame 20 to rotate relative to the support seat 4 through the connecting rod 23. Preferably, there are multiple connecting rods 23, and the multiple connecting rods 23 are arranged one by one with the multiple support frames 20, and the multiple connecting rods 23 are arranged at intervals along the circumference of the pressing block 22. Preferably, there are three support frames 20, and the three support frames 20 are arranged in a triangular shape to enhance the support stability.

[0036] In the present application, the support frame 20 includes a sleeve 201 and a movable rod 202. The sleeve 201 is hinged to the support seat 4. At least a portion of the movable rod 202 is inserted into the sleeve 201 and is movably arranged along the extension direction of the sleeve 201 to adjust the length of the support frame 20, thereby adjusting the height of the communication base station 100. A threaded hole is provided on the wall of the sleeve 201, and a locking bolt is passed through the threaded hole. The locking bolt abuts against the movable rod 202 to fix the movable rod 202 in a predetermined position.

[0037] In a specific implementation, the mounting rod 21 is provided with an external thread, and the support assembly 2 further includes: an adjustment block 24, which is sleeved on the mounting rod 21 and threadedly connected with the mounting rod 21, and the adjustment block 24 is located below the pressing block 22, and the pressing block 22 is pushed to move by the adjustment block 24; a second elastic component 25, which is sleeved on the mounting rod 21, and the two ends of the second elastic component 25 are respectively connected to the support seat 4 and the pressing block 22. When the adjustment block 24 is screwed, the adjustment block 24 pushes the pressing block 22 to move upward, and compresses the second elastic component 25, so that the position of the support frame 20 can be fine-tuned, and the accuracy of the height adjustment of the communication base station 100 can be improved. When the position of the communication base station 100 needs to be lowered, the adjustment block 24 is screwed in the opposite direction, and the pressing block 22 moves downward under the elastic restoring force of the second elastic component 25. Preferably, the second elastic component 25 is elastic.

[0038] like Figure 6 As shown, in order to facilitate the installation of the communication base station 100, the support mechanism also includes: a holder 5, which is arranged on the mounting seat 10, and a mounting groove 50 is arranged on the holder 5, and the communication base station 100 is arranged in the mounting groove 50; a support rod 6, and the two ends of the support rod 6 are respectively hinged to the communication base station 100 and the holder 5. Among them, the communication base station 100 is clearance-matched with the mounting groove 50, and the support rod 6 is hinged to the communication base station 100, so that the pitch angle of the communication base station 100 is conveniently adjusted.

[0039] A clearance groove 51 is provided on the end surface of the card base 5 opposite to the mounting base 10, and the supporting mechanism further includes: a buffer pad 7, which is fixedly mounted on the mounting base 10, at least part of the buffer pad 7 is embedded in the clearance groove 51, and the buffer pad 7 is interference-fitted with the clearance groove 51. The buffer pad 7 is annular, and the card base 5 cooperates with the mounting base 10 through the buffer pad 7, thereby improving the stability of the communication base station 100 on the card base 5.

[0040] Furthermore, the holder 5 is also provided with a fixing portion 52, which is arranged on the side of the mounting groove 50, and the supporting mechanism further includes: a fixing block 8, which is arranged in the fixing portion 52, the supporting rod 6 is hinged to the fixing block 8, and the edge of the fixing block 8 is provided with a protruding plate 80, which extends relative to the fixing block 8 toward the direction close to the mounting seat 10, and a slot 801 is provided on the bottom surface of the protruding plate 80, and at least part of the slot 801 is engaged with the buffer pad 7. Such a configuration can ensure the stability of the fixing block 8, and the fixing block 8 is prevented from moving by engaging the slot 801 with the buffer pad 7.

[0041] In a specific implementation, the socket 5 includes a stop body 53 and an installation body 54. There are two stop bodies 53. Both stop bodies 53 are connected to the installation body 54. There is an angle between the two stop bodies 53. The yield groove 51 is divided into multiple groove sections. The multiple groove sections are respectively arranged on the stop body 53 and the installation body 54. The installation groove 50 and the fixing part 52 are both arranged on the installation body 54.

[0042] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0043] The support mechanism provided by the present invention is used to support a communication base station 100 in a mine, wherein the support mechanism includes a rotation adjustment component 1 and a support component 2, wherein the rotation adjustment component 1 includes a mounting seat 10 that can rotate around a first axis, and the communication base station 100 is arranged on the mounting seat 10; the support component 2 is arranged below the rotation adjustment component 1 and connected to the rotation adjustment component 1, and the support component 2 includes a support frame 20, and the angle between the support frame 20 and the horizontal plane is adjustable, and the support frame 20 is telescopically arranged to drive the rotation adjustment component 1 to rise and fall through the support frame 20. During use, the communication base station 100 is driven to rotate around the first axis by rotating the mounting seat 10 to adjust the angle of the communication base station 100, and the height of the communication base station 100 and the stability of the communication base station 100 are adjusted by adjusting the angle between the support frame 20 and the horizontal plane and the telescopic displacement of the support frame 20, so that the operation is simple and convenient, and the position of the communication base station 100 can be adjusted in real time according to the actual construction environment, so that the communication base station 100 maintains good signal transmission.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. 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 support mechanism for supporting a communication base station (100) in a mine, characterized in that: The supporting mechanism comprises: A rotation adjustment component (1), the rotation adjustment component (1) comprising a mounting seat (10) rotatable about a first axis, the communication base station (100) being arranged on the mounting seat (10); A support assembly (2) is arranged below the rotation adjustment assembly (1) and connected to the rotation adjustment assembly (1), the support assembly (2) comprising a support frame (20), the angle between the support frame (20) and a horizontal plane being adjustable, the support frame (20) being telescopically arranged so as to drive the rotation adjustment assembly (1) to rise and fall via the support frame (20); The rotation adjustment assembly (1) comprises: a rotation shaft (11) connected to the mounting seat (10); a first bevel gear (12) sleeved on the rotation shaft (11) and connected to the rotation shaft (11); a second bevel gear (13) meshing with the first bevel gear (12); a rotation armrest (14) arranged on the side of the second bevel gear (13) and connected to the second bevel gear (13), and the second bevel gear (13) is driven to rotate by rotating the rotation armrest (14); The support mechanism further comprises: a support seat (4), the rotation adjustment assembly (1) being arranged on the support seat (4); the support frame (20) being arranged on the support seat (4) and being hinged to the support seat (4), the support frame (20) being in plurality, and the plurality of support frames (20) being arranged at intervals along the circumference of the support seat (4); The support assembly (2) further comprises: a mounting rod (21) connected to the support seat (4); a pressing block (22) sleeved on the mounting rod (21), the pressing block (22) being movably arranged along the extension direction of the mounting rod (21); and a connecting rod (23), the two ends of the connecting rod (23) being respectively hinged to the support frame (20) and the pressing block (22); The mounting rod (21) is provided with an external thread, and the support assembly (2) further comprises: an adjusting block (24) sleeved on the mounting rod (21) and threadedly connected to the mounting rod (21), the adjusting block (24) being located below the pressing block (22), and the pressing block (22) is pushed to move by the adjusting block (24); a second elastic component (25) sleeved on the mounting rod (21), and two ends of the second elastic component (25) are respectively connected to the support seat (4) and the pressing block (22); The support mechanism further comprises: a card seat (5) arranged on the mounting seat (10), the card seat (5) being provided with a mounting groove (50), the communication base station (100) being arranged in the mounting groove (50); a support rod (6), the two ends of the support rod (6) being respectively hinged to the communication base station (100) and the card seat (5); A clearance groove (51) is provided on the end surface of the clamping seat (5) opposite to the mounting seat (10), and the supporting mechanism further comprises: a buffer pad (7) fixedly mounted on the mounting seat (10), at least a portion of the buffer pad (7) being embedded in the clearance groove (51), and the buffer pad (7) and the clearance groove (51) being interference fit; The base (5) is also provided with a fixing portion (52), the fixing portion (52) being arranged on the side of the mounting groove (50), the supporting mechanism further comprising: a fixing block (8) being arranged in the fixing portion (52), the supporting rod (6) being hinged to the fixing block (8), an extension plate (80) being provided at the edge of the fixing block (8), the extension plate (80) extending relative to the fixing block (8) in a direction close to the mounting base (10), a slot (801) being provided on the bottom surface of the extension plate (80), at least a portion of the slot (801) being engaged with the buffer pad (7); The holder (5) comprises a stopper body (53) and a mounting body (54), the stopper bodies (53) being two in number, the two stopper bodies (53) being connected to the mounting body (54), an angle being formed between the two stopper bodies (53), the recess (51) being divided into a plurality of groove sections, the plurality of groove sections being respectively arranged on the stopper body (53) and the mounting body (54), the mounting groove (50) and the fixing portion (52) being both arranged on the mounting body (54).

2. The support mechanism according to claim 1, characterized in that: The rotation adjustment component (1) further comprises: a first limiting component (15) sleeved on the rotating shaft (11) and connected to the rotating shaft (11), the first limiting component (15) being provided with a plurality of grooves (150), the plurality of grooves (150) being arranged at intervals along the circumference of the first limiting component (15); A second limiting component (16) is arranged on the side of the first limiting component (15), and a limiting protrusion (160) is arranged on the second limiting component (16). The second limiting component (16) is movably arranged in a direction approaching or moving away from the first limiting component (15), so that the limiting protrusion (160) can be inserted into any one of the plurality of grooves (150), or the limiting protrusion (160) can be pulled out of the groove (150).

3. The support mechanism according to claim 2, characterized in that: The support mechanism further comprises a protective box (3), the first limiting component (15) and the second limiting component (16) are both arranged in the protective box (3), and the rotation adjustment component (1) further comprises: a pulling component (17), wherein at least a portion of the pulling component (17) is inserted into a through hole on the protective box (3) and is connected to the second limiting component (16), and the second limiting component (16) is driven to move by the pulling component (17); A first elastic component (18), wherein two ends of the first elastic component (18) are respectively connected to the inner wall surface of the protection box body (3) and the second limiting component (16).

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