A bearing adapter sleeve

Abstract

This invention relates to the field of bearing technology, specifically to a bearing retaining sleeve, comprising a tapered sleeve. The outer wall of the tapered sleeve has three equidistantly distributed circular limiting components. The outer wall of the tapered sleeve also has three equidistantly distributed circular adjusting grooves, and the inner walls of the three adjusting grooves are provided with a common clamping mechanism. A bearing body is fitted onto the outer wall of the tapered sleeve between the clamping mechanism and the limiting components. The clamping mechanism includes three adjusting components installed in the adjusting grooves, and the outer walls of each of the three adjusting components are provided with connecting components. The outer walls of the three connecting components are connected to a common clamping ring. This invention solves the problem of existing tapered sleeves easily tilting during bearing installation by providing three limiting components on the tapered sleeve, which facilitates limiting the movement of the bearing and prevents the bearing from shaking during installation. Furthermore, the clamping mechanism on the tapered sleeve facilitates pressing the bearing onto the tapered sleeve, thus solving the problem of existing tapered sleeves easily tilting during bearing installation.

Description

Technical Field

[0001] The invention relates to the technical field of bearings, in particular to a bearing adapter sleeve. Background Art

[0002] Bearings are components that fix and reduce the load friction coefficient during mechanical transmission. In other words, when other parts move relative to each other on the shaft, they are used to reduce the friction coefficient during power transmission and keep the center position of the shaft fixed. During use, wear and tear will inevitably occur between the bearing and the shaft. After long-term use, the inner diameter of the bearing will not match the diameter of the shaft, and radial runout will occur, causing the parts on the bearing to shift, affecting the stability of the mechanical equipment.

[0003] After searching, the Chinese patent application number CN102606630 discloses a bearing adapter sleeve, including a tapered sleeve, a groove, a block, a positioning groove, a positioning hole, a fixing block, a first latch and a second latch; the tapered sleeve has at least two grooves in an annular array; the groove is provided with a matching block; the block is provided with a positioning groove; the tapered sleeve is provided with a positioning hole at the corresponding groove; the fixing block is provided with a first latch and a second latch; the first latch is inserted into the positioning groove, and the second latch is inserted into the positioning hole. The small-diameter end of the tapered sleeve has a through groove corresponding to the groove; the fixing block is arranged in the through groove; when the first latch is inserted into the positioning groove and the second latch is inserted into the positioning hole, the outer surface of the fixing block is flush with the small-diameter end surface of the tapered sleeve.

[0004] A bearing clamping sleeve in the above patent has the following shortcomings: in the above patent, a stopper is set on the tapered sleeve to limit the movement of the bearing, but the clamping method of the stopper is difficult to adjust during the actual installation process, which can easily cause the bearing to tilt during actual use. Summary of the invention

[0005] The purpose of the present invention is to solve or at least alleviate the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bearing clamping sleeve, comprising a tapered sleeve, the outer wall of the tapered sleeve is provided with three equidistant circularly distributed limit assemblies, the outer wall of the tapered sleeve is provided with three equidistant circularly distributed adjustment grooves, and the inner walls of the three adjustment grooves are provided with the same clamping mechanism, a bearing body sleeved on the outer wall of the tapered sleeve is provided between the clamping mechanism and the limit assemblies, the clamping mechanism comprises three adjustment assemblies installed in the adjustment grooves, and the outer walls of the three adjustment assemblies are provided with connecting assemblies, the outer walls of the three connecting assemblies are connected with the same clamping ring, and the clamping ring is clamped on the bearing body.

[0007] By adopting the above structure, the tapered sleeve is sleeved on the outer wall of the rotating shaft, and the limiting component on the tapered sleeve is convenient for limiting the movement of the bearing body, thereby ensuring the stability of the bearing body. The setting of the clamping mechanism is convenient for assisting the bearing body to be clamped and fixed. The setting of the adjusting component is convenient for connecting the connecting component to move toward the limiting component. The setting of the connecting component is convenient for installing the clamping ring. The clamping ring is pushed by the adjusting component to clamp the bearing body, which is convenient for quickly clamping and fixing the bearing body. The detachable connecting component is convenient for separating the clamping ring and the adjusting component.

[0008] In a possible implementation, the limit assembly includes a limit seat fixedly connected to the outer wall of the conical sleeve, and an installation cavity is opened inside the limit seat, two fixing rods are fixedly connected to the inner wall of the installation cavity, and the outer walls of the two fixing rods are both sleeved with springs.

[0009] With the above structure, the installation cavity is provided to facilitate installation and fixation of the fixing rod, and the provision of the fixing rod is convenient for installation of the spring 1.

[0010] In a possible implementation, an opening is formed on one outer wall of the installation cavity, and a sliding seat is slidably connected to the inner wall of the opening, a clamping plate is fixedly connected to one outer wall of the sliding seat, and a protective pad is fixedly connected to one outer wall of the clamping plate.

[0011] With the above structure, the pressing plate can be easily installed by setting the sliding seat, and the protective pad on the pressing plate can effectively reduce the friction between the pressing plate and the bearing body.

[0012] In a possible implementation, the sliding seat is a T-shaped structure, and the sliding seat is slidably connected to the outer walls of the two fixed rods, a circular opening is provided on the inner wall on the other side of the mounting cavity, and an indicator rod is slidably connected to the inner wall of the circular opening, one end of the indicator rod is fixedly connected to the sliding seat, and a plurality of equally spaced scale lines are provided on the outer wall of the indicator rod.

[0013] With the above structure, the movement of the sliding seat drives the indicating rod to move, and the scale lines leaking from the indicating rod are used to determine the stability of the bearing body installation, thereby preventing the bearing body from tilting.

[0014] In a possible implementation, the adjustment assembly includes an adjustment seat fixedly connected to the inner wall of the adjustment slot, and a rectangular opening is formed on the outer wall of the top of the adjustment seat, and a driving seat is slidably connected to the inner wall of the rectangular opening.

[0015] With the above structure, the driving seat can be conveniently installed by sliding through the rectangular opening.

[0016] In a possible implementation, the inner walls on both sides of the adjustment seat are rotatably connected to the same screw rod 1, the driving seat is screwed on the outer wall of the screw rod 1, the outer wall on one side of the adjustment seat is rotatably connected to a rotating part, and one end of the transmission shaft of the rotating part is fixedly connected to the screw rod 1, and the cross-section of the rotating part is a regular hexagonal structure.

[0017] With the above structure, the rotating part drives the screw rod to rotate, and the screw rod directly drives the driving seat to move when it rotates, thereby conveniently driving the connecting assembly to move.

[0018] In a possible implementation, a connection groove is provided on the outer wall at the top of the driving seat, and the connection groove is a rectangular structure, and limiting grooves are provided on the inner walls on both sides of the connection groove.

[0019] With the above structure, the connection groove is provided to facilitate installation of the connection assembly, and the limit groove is provided to facilitate installation of the auxiliary connection assembly.

[0020] In one possible implementation, the connecting assembly includes a connecting seat, and the connecting seat is an L-shaped structure, an inner wall of the connecting seat is provided with an adjustment cavity, the inner wall of the adjustment cavity is provided with two strip openings, and the two strip openings are symmetrically arranged, the inner walls of the two strip openings are slidably connected to the limiting blocks, and the specifications of the limiting blocks match the specifications of the limiting grooves, one end of the connecting seat is fixedly connected to the clamping ring, a groove is provided on the bottom outer wall of the connecting seat, and the inner wall of the groove is slidably connected to the clamping seat, the inner wall of the groove is fixedly connected to two springs two, and one end of the two springs two is fixedly connected to the clamping seat, a circular groove is provided on the top outer wall of the connecting seat, and the inner wall of the circular groove is rotatably connected to a prism.

[0021] With the above structure, the driving seat and the clamping ring are conveniently connected through the L-shaped connecting seat, the two adjustable limit blocks are convenient for fixing the connecting seat on the driving seat, and the second spring cooperates with the clamping seat to clamp the connecting seat to prevent it from shaking.

[0022] In a possible implementation, the inner walls on both sides of the adjustment chamber are rotatably connected to the same screw rod 2, one end of the screw rod 2 is fixedly connected to the prism, and the outer wall of the screw rod 2 is screwed with a trapezoidal block, the outer wall of the trapezoidal block is provided with two sliding grooves, and two limit blocks are slidably connected to the inner walls of the two sliding grooves.

[0023] With the above structure, the trapezoidal block is driven to move by the rotation of the second screw rod. When the trapezoidal block moves, it is convenient to drive the two limit blocks to move. The setting of the prism facilitates the rotation of the second screw rod.

[0024] In a possible implementation, the inner walls on both sides of the adjusting chamber are rotatably connected to the same screw rod 2, one end of the screw rod 2 is fixedly connected to the prism, and the outer wall of the screw rod 2 is threaded with a threaded sleeve, the outer wall of the threaded sleeve is rotatably connected to two connecting plates, and one end of the two connecting plates are respectively rotatably connected to two limit blocks.

[0025] With the above structure, the threaded sleeve is driven to rise and fall by rotating the second screw in the connecting seat. When the threaded sleeve moves, the limit block is directly pushed to move by the connecting plate, thereby facilitating the disassembly of the connecting seat.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention arranges three limit assemblies on the tapered sleeve, and the arrangement of the limit assemblies is convenient for limiting the movement of the bearing, so as to avoid the bearing from shaking during installation. A pressing mechanism is arranged on the tapered sleeve, and the arrangement of the pressing mechanism is convenient for pressing the bearing on the tapered sleeve. The cooperation between the pressing mechanism and the limit assemblies is convenient for stably installing the bearing on the outer wall of the tapered sleeve, so as to solve the problem that the existing tapered sleeve is prone to tilting when installing the bearing.

[0028] The present invention arranges an indicator rod on the limit mechanism, and the arrangement of the indicator rod facilitates the detection of the installation position of the bearing body, thereby preventing the bearing body from tilting during installation. The installation position of the bearing body is conveniently determined through the scale lines on the indicator rod, thereby preventing the bearing body from tilting during the pressing process, thereby causing serious wear of the bearing during operation.

[0029] The present invention drives the driving seat to move by rotating the screw rod 1 in the adjusting assembly, thereby driving the connecting seat to push the clamping ring to clamp the bearing body. The connecting seat and the driving seat are provided with a detachable structure, which is convenient for the installation of the bearing body. The setting of the screw rod 2 in the connecting seat facilitates the adjustment of the two limit blocks, thereby facilitating the rapid disassembly and assembly of the connecting seat, and facilitating the disassembly and maintenance of the bearing body at a later time. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the limit assembly of the present invention;

[0034] Figure 5 It is a schematic cross-sectional view of the structure of the limit assembly of the present invention;

[0035] Figure 6 It is a schematic diagram of the structure of the clamping ring of the present invention;

[0036] Figure 7 It is a schematic diagram of the structure of the regulating component of the present invention;

[0037] Figure 8 It is a schematic cross-sectional structure diagram of the adjustment component of the present invention;

[0038] Fig. 9 This is a schematic cross-sectional structural diagram of a connection assembly according to a first embodiment of the present invention;

[0039] Fig.10 It is a schematic cross-sectional structure diagram of a connection assembly according to Embodiment 2 of the present invention.

[0040] In the figure: 1. tapered sleeve; 2. limit assembly; 3. bearing body; 4. clamping mechanism; 5. adjustment assembly; 6. connecting assembly; 7. clamping ring; 8. limit seat; 9. scale line; 10. indicator rod; 11. clamping plate; 12. protective pad; 13. sliding seat; 14. installation cavity; 15. fixing rod; 16. spring one; 17. adjustment seat; 18. rectangular opening; 19. driving seat; 20. rotating part; 21. screw one; 22. connecting groove; 23. connecting seat; 24. prism; 25. adjustment cavity; 26. screw two; 27. limit block; 28. trapezoidal block; 29. ​​groove; 30. spring two; 31. clamping seat; 32. threaded sleeve; 33. connecting plate. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention. Embodiment 1

[0042] See also Figure 1-9A bearing adapter sleeve comprises a tapered sleeve 1, the outer wall of the tapered sleeve 1 is provided with three equidistant circularly distributed limiting components 2, the outer wall of the tapered sleeve 1 is provided with three equidistant circularly distributed adjusting grooves, and the inner walls of the three adjusting grooves are provided with the same clamping mechanism 4, a bearing body 3 sleeved on the outer wall of the tapered sleeve 1 is provided between the clamping mechanism 4 and the limiting components 2, the clamping mechanism 4 comprises three adjusting components 5 installed in the adjusting grooves, and the outer walls of the three adjusting components 5 are provided with connecting components 6, the outer walls of the three connecting components 6 are connected with the same clamping ring 7, and the clamping ring 7 is clamped on the bearing body 3 On the upper part, the tapered sleeve 1 is sleeved on the outer wall of the rotating shaft, the limiting component 2 on the tapered sleeve 1 is convenient for limiting the movement of the bearing body 3, thereby ensuring the stability of the bearing body 3, the setting of the clamping mechanism 4 is convenient for assisting the bearing body 3 to be clamped and fixed, the setting of the adjusting component 5 is convenient for connecting the connecting component 6 to move toward the limiting component 2, the setting of the connecting component 6 is convenient for installing the clamping ring 7, the clamping ring 7 is pushed by the adjusting component 5 to clamp the bearing body 3, and the bearing body 3 is convenient for quick clamping and fixing, and the detachable connecting component 6 is convenient for separating the clamping ring 7 and the adjusting component 5.

[0043] For details, please refer to Figure 4-5 The limit assembly 2 includes a limit seat 8 fixedly connected to the outer wall of the conical sleeve 1, and an installation cavity 14 is opened inside the limit seat 8. Two fixing rods 15 are fixedly connected to the inner wall of the installation cavity 14, and the outer walls of the two fixing rods 15 are both sleeved with springs 16. The setting of the installation cavity 14 facilitates the installation and fixation of the fixing rods 15, and the setting of the fixing rods 15 facilitates the installation of the spring 16.

[0044] For details, please refer to Figure 5 An opening is provided on one outer wall of the mounting cavity 14, and a sliding seat 13 is slidably connected to the inner wall of the opening, a clamping plate 11 is fixedly connected to the outer wall of one side of the sliding seat 13, and a protective pad 12 is fixedly connected to the outer wall of one side of the clamping plate 11. The arrangement of the sliding seat 13 facilitates the installation of the clamping plate 11, and the protective pad 12 on the clamping plate 11 can effectively reduce the friction between the clamping plate 11 and the bearing body 3.

[0045] For details, please refer to Figure 5 The sliding seat 13 is a T-shaped structure, and the sliding seat 13 is slidably connected to the outer walls of the two fixed rods 15. A circular opening is provided on the inner wall of the other side of the installation cavity 14, and an indicating rod 10 is slidably connected to the inner wall of the circular opening. One end of the indicating rod 10 is fixedly connected to the sliding seat 13, and a plurality of equally spaced scale lines 9 are provided on the outer wall of the indicating rod 10. The movement of the sliding seat 13 drives the indicating rod 10 to move, and the stability of the installation of the bearing body 3 is determined by the scale lines 9 leaking from the indicating rod 10 to prevent the bearing body 3 from tilting.

[0046] For details, please refer to Figure 7-8 The adjustment assembly 5 includes an adjustment seat 17 fixedly connected to the inner wall of the adjustment groove, and a rectangular opening 18 is opened on the outer wall of the top of the adjustment seat 17. The inner wall of the rectangular opening 18 is slidably connected to a driving seat 19. The setting of the rectangular opening 18 facilitates the sliding installation of the driving seat 19.

[0047] For details, please refer to Figure 8 The inner walls on both sides of the adjustment seat 17 are rotatably connected with the same screw 21, the driving seat 19 is screwed on the outer wall of the screw 21, and the outer wall of one side of the adjustment seat 17 is rotatably connected with a rotating part 20, and one end of the transmission shaft of the rotating part 20 is fixedly connected to the screw 21. The cross-section of the rotating part 20 is a regular hexagonal structure. The screw 21 is driven to rotate by the rotating part 20. When the screw 21 rotates, it directly drives the driving seat 19 to move, thereby facilitating the movement of the connecting component 6.

[0048] For details, please refer to Figure 8 A connecting groove 22 is provided on the outer wall of the top of the driving seat 19, and the connecting groove 22 is a rectangular structure. Limiting grooves are provided on the inner walls on both sides of the connecting groove 22. The setting of the connecting groove 22 facilitates the installation of the connecting component 6, and the setting of the limiting groove facilitates the installation of the auxiliary connecting component 6.

[0049] For details, please refer to Fig. 9 The connecting assembly 6 includes a connecting seat 23, and the connecting seat 23 is an L-shaped structure. The inner wall of the connecting seat 23 is provided with an adjusting cavity 25. The inner wall of the adjusting cavity 25 is provided with two strip-shaped openings, and the two strip-shaped openings are symmetrically arranged. The inner walls of the two strip-shaped openings are both slidably connected to the limiting blocks 27, and the specifications of the limiting blocks 27 match the specifications of the limiting grooves. One end of the connecting seat 23 is fixedly connected to the clamping ring 7, and the outer wall of the bottom of the connecting seat 23 is provided with a groove 29, and the inner wall of the groove 29 is slidably connected to the clamping seat 31. Two springs 230 are fixedly connected to the inner wall of the groove 29, and one end of the two springs 230 is fixedly connected to the clamping seat 31. A circular groove is provided on the outer wall of the top of the connecting seat 23, and a prism 24 is rotatably connected to the inner wall of the circular groove. The driving seat 19 and the clamping ring 7 are conveniently connected through the L-shaped connecting seat 23. Two adjustable limit blocks 27 facilitate fixing the connecting seat 23 on the driving seat 19. The springs 230 cooperate with the clamping seat 31 to clamp the connecting seat 23 to prevent it from shaking.

[0050] For details, please refer to Fig. 9The inner walls on both sides of the adjusting chamber 25 are rotatably connected with the same screw rod 26, one end of the screw rod 26 is fixedly connected to the prism 24, and the outer wall of the screw rod 26 is screwed with a trapezoidal block 28, and the outer wall of the trapezoidal block 28 is provided with two slide grooves, and two limit blocks 27 are slidably connected to the inner walls of the two slide grooves. The trapezoidal block 28 is driven to move by the rotation of the screw rod 26. When the trapezoidal block 28 moves, it is convenient to drive the two limit blocks 27 to move. The setting of the prism 24 is convenient for adjusting the rotation of the screw rod 26. Embodiment 2

[0051] Based on the first embodiment, this embodiment introduces a specific structure of the connecting component 6 in the bearing adapter sleeve, such as Fig.10 As shown, the inner walls on both sides of the adjustment chamber 25 are rotatably connected with the same screw rod 26, one end of the screw rod 26 is fixedly connected to the prism 24, and the outer wall of the screw rod 26 is screwed with a threaded sleeve 32, the outer wall of the threaded sleeve 32 is rotatably connected with two connecting plates 33, and one end of the two connecting plates 33 is rotatably connected to two limit blocks 27 respectively, the screw rod 26 in the connecting seat 23 is rotated to drive the threaded sleeve 32 to rise and fall, and when the threaded sleeve 32 moves, it directly pushes the limit block 27 to move through the connecting plate 33, thereby facilitating the disassembly of the connecting seat 23.

[0052] Working principle: During installation, first sleeve the bearing body 3 on the outer wall of the tapered sleeve 1, and then connect the clamping ring 7 to the adjusting assembly 5 through the connecting assembly 6. During connection, it is sleeved on the outer wall of the prism 24 through a socket wrench, and the wrench drives the prism 24 to rotate. When the prism 24 rotates, it directly drives the screw rod 26 to rotate. When the screw rod 26 rotates, it directly drives the trapezoidal block 28 to rise and fall. When the trapezoidal block 28 descends, it directly pushes the two limit blocks 27 to extend. When the limit blocks 27 extend, they are directly inserted into the limit grooves, so as to facilitate fixing the connecting seat 23 on the driving seat 19. After installation, the clamping seat 31 compresses the spring 2 30. Finally, the adjusting rotating part 20 drives the screw rod 21 to rotate. The rotation of the screw rod 21 drives the driving seat 19 to move. When the driving seat 19 moves, it directly cooperates with the connecting seat 23 to push the clamping ring 7 to be pressed on the bearing body 3.

[0053] While being pressed, the bearing body 3 pushes the sliding seat 13 to move through the pressing plate 11. When the sliding seat 13 moves, the spring 16 on the fixed rod 15 is directly compressed. When the sliding seat 13 moves, the indicator rod 10 is driven to extend. When the indicator rod 10 is extended, the scale line 9 is leaked. The stable installation of the bearing body 3 is ensured by the scale lines 9 leaked by the three indicator rods 10 being equal; the connecting seat 23 can also drive the threaded sleeve 32 to rise and fall by rotating the screw 26. When the threaded sleeve 32 moves, it directly pushes the limit block 27 to move through the connecting plate 33, thereby facilitating the disassembly of the connecting seat 23.

[0054] 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 is 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 bearing adapter sleeve, comprising a tapered sleeve (1), characterized in that: The outer wall of the conical sleeve (1) is provided with three equidistantly distributed circular limit assemblies (2), the outer wall of the conical sleeve (1) is provided with three equidistantly distributed circular adjustment grooves, and the inner walls of the three adjustment grooves are provided with a same clamping mechanism (4), a bearing body (3) sleeved on the outer wall of the conical sleeve (1) is provided between the clamping mechanism (4) and the limit assemblies (2), the clamping mechanism (4) comprises three adjustment assemblies (5) installed in the adjustment grooves, and the outer walls of the three adjustment assemblies (5) are all provided with connecting assemblies (6), the outer walls of the three connecting assemblies (6) are connected with a same clamping ring (7), and the clamping ring (7) is clamped on the bearing body (3); The limit assembly (2) comprises a limit seat (8) fixedly connected to the outer wall of the conical sleeve (1), and a mounting cavity (14) is provided inside the limit seat (8), two fixing rods (15) are fixedly connected to the inner wall of the mounting cavity (14), and the outer walls of the two fixing rods (15) are both sleeved with springs 1 (16); An opening is formed on one side outer wall of the installation cavity (14), and a sliding seat (13) is slidably connected to the inner wall of the opening; a pressing plate (11) is fixedly connected to one side outer wall of the sliding seat (13), and a protective pad (12) is fixedly connected to one side outer wall of the pressing plate (11); The sliding seat (13) is a T-shaped structure, and the sliding seat (13) is slidably connected to the outer walls of the two fixed rods (15); a circular opening is provided on the inner wall of the other side of the installation cavity (14), and an indicating rod (10) is slidably connected to the inner wall of the circular opening; one end of the indicating rod (10) is fixedly connected to the sliding seat (13), and a plurality of equidistantly distributed scale lines (9) are provided on the outer wall of the indicating rod (10); The adjustment assembly (5) comprises an adjustment seat (17) fixedly connected to the inner wall of the adjustment groove, and a rectangular opening (18) is provided on the top outer wall of the adjustment seat (17), and a driving seat (19) is slidably connected to the inner wall of the rectangular opening (18); The inner walls of both sides of the adjustment seat (17) are rotatably connected to the same screw rod (21), the driving seat (19) is screwed on the outer wall of the screw rod (21), the outer wall of one side of the adjustment seat (17) is rotatably connected to a rotating part (20), and one end of the transmission shaft of the rotating part (20) is fixedly connected to the screw rod (21), and the cross-section of the rotating part (20) is a regular hexagonal structure; A connection groove (22) is provided on the outer wall of the top of the driving seat (19), and the connection groove (22) is a rectangular structure, and limiting grooves are provided on the inner walls on both sides of the connection groove (22); The connecting assembly (6) comprises a connecting seat (23), and the connecting seat (23) is an L-shaped structure. The inner wall of the connecting seat (23) is provided with an adjusting cavity (25). The inner wall of the adjusting cavity (25) is provided with two strip-shaped openings, and the two strip-shaped openings are symmetrically arranged. The inner walls of the two strip-shaped openings are both slidably connected to a limiting block (27), and the specifications of the limiting block (27) match the specifications of the limiting groove. One end of the connecting seat (23) is fixedly connected to the clamping ring (7). The bottom outer wall of the connecting seat (23) is provided with a groove (29), and the inner wall of the groove (29) is slidably connected to a clamping seat (31). The inner wall of the groove (29) is fixedly connected to two springs (30), and one end of the two springs (30) is fixedly connected to the clamping seat (31). The top outer wall of the connecting seat (23) is provided with a circular groove, and the inner wall of the circular groove is rotatably connected to a prism (24). The inner walls on both sides of the regulating cavity (25) are rotatably connected to the same screw rod (26), one end of which is fixedly connected to the prism (24), and the outer wall of the screw rod (26) is screwed with a trapezoidal block (28), the outer wall of the trapezoidal block (28) is provided with two sliding grooves, and the two limit blocks (27) are slidably connected to the inner walls of the two sliding grooves.

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