A prefabricated beam reinforcement tyre frame for accurate positioning

Abstract

The present application relates to the technical field of steel bar binding equipment, and in particular to a prefabricated beam steel bar binding cradle that is easy to accurately position, including a support base, on which two groups of support components are symmetrically installed, on which multiple groups of receiving parts are installed, and on which sliding parts are installed, and the receiving parts can be slidably arranged in the sliding parts; in the present application, by adjusting the length of the bearing part inserted into the sliding part, the length of the bearing part for receiving the steel bars can be adjusted, so that the steel bar binding cradle can adapt to prefabricated beams of different sizes, the adaptability of the steel bar binding cradle is increased to meet the specific needs of different projects, and the time and cost of individually designing and manufacturing the steel bar binding cradle for each specification of prefabricated beam is reduced, thereby reducing the number of steel bar binding cradles and supporting land, so as to reduce the prefabrication cost.

Description

Technical Field

[0001] The present application relates to the technical field of steel bar binding equipment, and in particular to a prefabricated beam steel bar binding cradle that is easy to accurately position. Background Art

[0002] In the production of prefabricated beams and slabs, the binding of steel bar skeletons is an important link with the largest workload, the most tedious and the longest time. It is usually carried out on the beam-making pedestal. However, due to the low qualified rate of the steel bar protective layer, the poor linear shape of the steel bar skeleton, the uneven steel bar spacing and the contamination of the steel bar skeleton by the release agent of the steel plate of the beam pedestal, the construction error is large and the construction efficiency is low. In order to solve the problems of large construction error and low construction efficiency, a steel bar binding cradle is proposed on the market.

[0003] However, the steel bar bearing rods in the existing steel bar binding cradles are generally fixed and their sizes cannot be adjusted. In the actual construction process, there are often prefabricated beams with different cross-sectional sizes or different beam types. Therefore, steel bar binding cradles with bearing rods of different lengths are configured in the same beam manufacturing site, which increases the prefabrication cost of supporting land and mechanical equipment and increases the complexity of the construction site. Therefore, further improvements can be made. Summary of the invention

[0004] In order to reduce the increase in prefabrication cost caused by the number of steel bar binding cradles of different sizes, the present application provides a prefabricated beam steel bar binding cradle that is easy to accurately position.

[0005] The present application provides a prefabricated beam reinforcement binding cradle that is convenient for accurate positioning and adopts the following technical solution:

[0006] A prefabricated beam reinforcement binding frame that is convenient for accurate positioning, comprising a support base, two groups of support components are symmetrically mounted on the support base, multiple groups of receiving parts are mounted on the support components, sliding parts are mounted on the support components, and the receiving parts can be slidably arranged in the sliding parts;

[0007] The sliding part includes a fixed shell, a shock-absorbing layer, a sliding layer, and multiple sliding balls. The shock-absorbing layer is installed in the fixed shell, and the sliding layer is installed on the side of the shock-absorbing layer away from the fixed shell. The multiple sliding balls are installed in the sliding layer in a side-by-side and spaced-apart manner. The diameter of the sliding balls is greater than the thickness of the sliding layer.

[0008] By adopting the above technical solution, a sliding part is set, and the length of the bearing part inserted into the sliding part is adjusted, so that the length of the bearing part used to receive the steel bars can be adjusted, so that the steel bar binding cradle can adapt to precast beams of different sizes, thereby increasing the adaptability of the steel bar binding cradle to meet the specific needs of different projects, reducing the time and cost of separately designing and manufacturing the steel bar binding cradle for each specification of precast beams, thereby reducing the number of steel bar binding cradles and supporting land, and reducing the prefabrication cost.

[0009] Optionally, the support assembly includes a support vertical rod and a support diagonal rod, the support vertical rod and the bottom of the support diagonal rod are both installed on the support base, the top of the support diagonal rod is inclined toward the top of the support vertical rod, and the top of the support diagonal rod is fixedly connected to the top of the support vertical rod.

[0010] By adopting the above technical solution, supporting vertical rods and supporting diagonal rods are set, and the supporting vertical rods are used to assist in increasing the bearing capacity of the supporting diagonal rods, helping the supporting diagonal rods to disperse and transmit the force brought by the steel bars, reducing local stress concentration, and reducing the risk of damage to the tire puncturing frame structure due to overload, thereby extending the service life of the tire puncturing frame.

[0011] Optionally, the receiving member includes a plurality of straight rods and a fixed plate, the plurality of straight rods are installed on the fixed plate at intervals, and the plurality of straight rods are vertically connected to the fixed plate.

[0012] By adopting the above technical solution, the straight rod and the fixed plate are in a vertical state. During the actual installation and use process, the staff can move the straight rod in the sliding part by pulling the fixed plate, so that the straight rod is driven by the vertical force during the horizontal movement. Compared with the traditional method of directly moving the straight rod, it is more convenient to hold with the fixed plate.

[0013] Optionally, a locking piece is installed on the supporting vertical rod, and the receiving piece can be inserted into the locking piece; the locking piece includes an upper tube clamp and a lower tube clamp, the upper tube clamp can be clamped up and down with the lower tube clamp, the lower tube clamp is provided with a rotation limit frame at one end close to the supporting vertical rod, and the upper tube clamp is provided with a rotation limit block at one end close to the supporting vertical rod, the rotation limit block can be rotatably set in the rotation limit frame, and the upper tube clamp at one end away from the supporting vertical rod and the lower tube clamp at one end away from the supporting vertical rod are both provided with fixing screw holes, and the fixing screw holes can be locked and fixed by the tube clamp fixing screws.

[0014] By adopting the above technical solution, a locking piece is provided. When the staff adjusts the receiving piece to the required length, the locking piece can fix the receiving piece to a suitable position, ensuring that the receiving piece remains stable during subsequent use, preventing damage to the prefabricated beam structure due to movement of the receiving piece, and clamping and fixing the receiving piece by means of upper and lower clamps. The receiving piece is fixed from two directions by means of upper and lower clamping, thereby reducing the displacement of the receiving piece due to external force.

[0015] Optionally, reinforcing ribs are provided in both the upper tube clamp and the lower tube clamp.

[0016] By adopting the above technical solution, reinforcing ribs are set, which can improve the bearing capacity of the upper tube clamp and the lower tube clamp, enable them to withstand greater external forces, increase the rigidity of the upper tube clamp and the lower tube clamp, reduce the deformation when subjected to force, ensure that the locking piece is more stable, and thus improve the reliability of the locking piece.

[0017] Optionally, the support base includes a first support base and a second support base, and the first support base is detachably connected to the second support base.

[0018] By adopting the above technical solution, the first support base and the second support base are detachably connected, so that the support base can be quickly assembled or disassembled when needed, which greatly reduces the time and labor required for installing and moving the tire puncturing frame. During transportation, the first support base and the second support base can also be packaged and transported separately to reduce the transportation volume, making the support base more flexible to use.

[0019] Optionally, a connecting warehouse is provided at one end of the first support seat near the second support seat, and a connecting block is provided at one end of the second support seat near the first support seat. The connecting block can be plugged into the connecting warehouse, and the connecting block and the first support seat are both arranged with a plurality of connecting and fixing screw holes at intervals at the position of the connecting warehouse, and the connecting and fixing screw holes can be fixed by connecting and fixing screws.

[0020] By adopting the above technical solution, a plug-in and locking assembly method is adopted between the connecting bin and the connecting block, which reduces the time required for on-site installation, and the spacing of the tire puncturing frame can be changed by adjusting the length of the connecting block inserted into the connecting bin, making the tire puncturing frame more adaptable and more flexible in use.

[0021] Optionally, a first flange is installed on one end of the first support seat close to the second support seat, and a second flange is installed on one end of the second support seat close to the first support seat. The first flange and the second flange can be fixedly connected, and flange screw holes are provided on the first flange and the second flange, and the flange screw holes can be fixed by flange screws.

[0022] By adopting the above technical solution, the first flange and the second flange are arranged to cooperate with each other for flange connection. The flange connection can withstand extremely high pressure and torque. The first flange and the second flange are tightly connected by using connecting fixing screw holes and connecting fixing screws, so that the connection between the first support seat and the second support seat is more secure.

[0023] Optionally, a fixing seat is installed on the first flange, and the fixing seat can fix the first flange and the second flange. A fixing hole is opened at the end of the fixing seat away from the first flange, and a fastening member is provided on the fixing seat. The fastening member is passed through the fixing hole. The fastening member includes a fastening plate, a threaded screw, a fixed threaded sleeve, and a turntable. The fixed threaded sleeve is installed in the fixing hole, the threaded screw is passed through the fixed threaded sleeve, the fastening plate is installed at one end of the threaded screw close to the first flange, and the turntable is installed at one end of the threaded screw away from the first flange.

[0024] By adopting the above technical solution, a fixing seat is set, and the first flange and the second flange are additionally locked by the fixing seat. The threaded screw can be driven to rotate in the fixed threaded sleeve by rotating the turntable, so that the locking plate on the threaded screw can be close to or away from the first flange and the second flange.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. A sliding member is provided. By adjusting the length of the bearing member inserted into the sliding member, the length of the bearing member for receiving the steel bar can be adjusted, so that the steel bar binding cradle can adapt to prefabricated beams of different sizes, increasing the adaptability of the steel bar binding cradle to meet the specific needs of different projects, reducing the time and cost of separately designing and manufacturing the steel bar binding cradle for each specification of prefabricated beam, thereby reducing the number of steel bar binding cradles and supporting land, and reducing the prefabrication cost;

[0027] 2. Set up reinforcing ribs, which can improve the bearing capacity of the upper pipe clamp and the lower pipe clamp, so that they can withstand greater external forces, increase the rigidity of the upper pipe clamp and the lower pipe clamp, reduce the deformation when subjected to force, ensure that the locking piece is more stable, thereby improving the reliability of the locking piece;

[0028] 3. A fixing seat is provided, and the first flange and the second flange are additionally locked by the fixing seat. The threaded screw can be driven to rotate in the fixed threaded sleeve by rotating the turntable, so that the locking plate on the threaded screw can be close to or away from the first flange and the second flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of Example 1.

[0030] Figure 2 It is a schematic diagram of the overall structure of the sliding part.

[0031] Figure 3 It is a schematic diagram of the overall structure of the locking member.

[0032] Figure 4 It is a cross-sectional view of the connection position between the first support seat and the second support seat.

[0033] Figure 5 It is a schematic diagram of the overall structure of Example 2.

[0034] Figure 6 yes Figure 5 A schematic diagram of the enlarged structure of part A.

[0035] Description of reference numerals:

[0036] 1. Support base; 11. First support seat; 12. Second support seat; 13. Connecting bin; 14. Connecting block; 15. First flange; 16. Second flange; 17. Fixed seat; 18. Fastening member; 181. Fastening plate; 182. Threaded screw; 183. Fixed threaded sleeve; 184. Turntable; 2. Support assembly; 21. Support vertical rod; 22. Support diagonal rod; 3. Attachment; 31. Straight rod; 32. Fixed plate; 4. Sliding member; 41. Shock-absorbing layer; 42. Sliding layer; 43. Sliding ball; 44. Fixed shell; 5. Locking member; 51. Upper tube clamp; 52. Lower tube clamp; 53. Rotation limit frame; 54. Rotation limit block; 55. Reinforcement rib. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-6 This application is described in further detail.

[0038] The embodiment of the present application discloses a prefabricated beam reinforcement binding frame that is easy to accurately position.

[0039] Embodiment 1:

[0040] Reference Figure 1 , 2 A prefabricated beam reinforcement binding frame that is easy to accurately position includes a support base 1, on which two groups of support components 2 are installed, and the two groups of support components 2 are symmetrically fixedly installed on the support base 1. Each support component 2 is installed with multiple groups of receiving parts 3. In this embodiment, the number of receiving parts 3 on each support component 2 is two groups, and sliding parts 4 are installed on the receiving parts 3, and the receiving parts 3 can be slidably arranged in the sliding parts 4.

[0041] The sliding member 4 includes a fixed shell 44, which has a through plug-in interface along its length direction, a shock-absorbing layer 41 is arranged in the plug-in interface, and the shock-absorbing layer 41 is arranged in a ring along the inside of the plug-in interface. A sliding layer 42 is arranged in a ring inside the shock-absorbing layer 41, and a plurality of ball openings are evenly spaced in a surrounding manner along the length direction of the sliding layer 42. Rotatable sliding balls 43 are installed in the ball openings, and the diameter of the sliding balls 43 is greater than the thickness of the sliding layer 42, so that the protruding part of the sliding balls 43 can contact and slide with the receiving member 3.

[0042] During actual use, by adjusting the length of the bearing member inserted into the sliding member 4, the length of the bearing member used to receive the steel bars can be adjusted, so that the steel bar binding cradle can adapt to prefabricated beams of different sizes, thereby increasing the adaptability of the steel bar binding cradle to meet the specific needs of different projects and reducing the time and cost of separately designing and manufacturing the steel bar binding cradle for each specification of prefabricated beam, thereby reducing the number of steel bar binding cradles and supporting land, thereby reducing the prefabrication cost.

[0043] refer to Figure 1 Specifically, in this embodiment, the support assembly 2 includes a support vertical rod 21 vertically placed on the support base 1 and a support diagonal rod 22 obliquely placed on the support base 1, the top of the support diagonal rod 22 is inclined toward the top of the support vertical plate, the top of the support diagonal rod 22 is connected to the top of the support vertical plate, and the support diagonal rod 22 is located on the inner side of the support vertical plate. In actual use, the support vertical rod 21 is used to assist in increasing the bearing capacity of the support diagonal rod 22, helping the support diagonal rod 22 to disperse and transfer the force brought by the steel bars, reducing local stress concentration, and reducing the risk of damage to the tire puncturing frame structure due to overload, thereby extending the service life of the tire puncturing frame.

[0044] refer to Figure 1 Specifically, in this embodiment, the receiving member 3 includes a plurality of horizontal straight rods 31 and a vertical fixed plate 32. The plurality of straight rods 31 are arranged on the fixed plate 32 in a vertical state and are spaced apart from each other. The lengths of the plurality of straight rods 31 are gradually increased from top to bottom. The straight rods 31 can be inserted into the sliding member 4 to adjust the length. In actual use, the staff can move the straight rods 31 in the sliding member 4 by pulling the fixed plate 32, so that the straight rods 31 are driven by the vertical force during the horizontal movement. Compared with the traditional method of directly moving the straight rods 31, it is more convenient to hold the fixed plate 32.

[0045] refer to Figure 1 , 3 Specifically, in this embodiment, a locking member 5 is installed on the supporting vertical rod 21, and the straight rod 31 can be inserted into the locking member 5 for locking.

[0046] The locking member 5 comprises an upper tube clamp 51 and a lower tube clamp 52. The upper tube clamp 51 and the lower tube clamp 52 can be aligned and clamped and locked up and down. A rotation limit frame 53 is provided at one end of the lower tube clamp 52 close to the supporting vertical rod 21. A rotation limit block 54 is provided at one end of the upper tube clamp 51 close to the supporting vertical rod 21. The rotation limit block 54 can be rotatably arranged on the rotation limit frame 53. Fixing screw holes are provided at one end of the upper tube clamp 51 away from the supporting vertical rod 21 and one end of the lower tube clamp 52 away from the supporting vertical rod 21. The fixing screw holes can be locked and fixed by the tube clamp fixing screws.

[0047] In addition, reinforcing ribs 55 are provided in the upper tube clamp 51 and the lower tube clamp 52. The reinforcing ribs 55 are arranged on the inner sides of the upper tube clamp 51 and the lower tube clamp 52. The reinforcing ribs 55 can improve the bearing capacity of the upper tube clamp 51 and the lower tube clamp 52, so that they can withstand greater external forces, increase the rigidity of the upper tube clamp 51 and the lower tube clamp 52, reduce the deformation when subjected to force, ensure that the locking member 5 is more stable, and thus improve the reliability of the locking member 5.

[0048] During actual use, when the staff adjusts the receiving part 3 to the required length, the locking part 5 can fix the receiving part 3 to a suitable position to ensure that the receiving part 3 remains stable during subsequent use and prevent the prefabricated beam structure from being damaged due to the movement of the receiving part 3. The upper pipe clamp 51 and the lower pipe clamp 52 are used to clamp and fix the receiving part 3, and the upper and lower clamps are used to fix the receiving part 3 from two directions to reduce the displacement of the receiving part 3 due to external force.

[0049] refer to Figure 1 , 4 Specifically, in this embodiment, the support base 1 includes a first support base 11 and a second support base 12, and the first support base 11 and the second support base 12 are detachably connected.

[0050] A connecting bin 13 is provided at one end of the first support seat 11 close to the second support seat 12, and a connecting block 14 is provided at one end of the second support seat 12 close to the first support seat 11. The connecting block 14 can be plugged into the connecting bin 13. The connecting block 14 and the first support seat 11 are both provided with a plurality of connecting and fixing screw holes at intervals at the position of the connecting bin 13. The length of the connecting and fixing screw holes can be determined by the length of the connecting block 14 inserted into the connecting bin 13, and then fixed by the connecting and fixing screws.

[0051] In actual use, the first support seat 11 and the second support seat 12 are detachably connected, so that the support base 1 can be quickly assembled or disassembled when needed, which greatly reduces the time and labor required for installing and moving the tire puncturing frame. During transportation, the first support seat 11 and the second support seat 12 can also be packaged and transported separately to reduce the transportation volume, making the support base 1 more flexible to use. In addition, the spacing of the tire puncturing frame can be changed by adjusting the length of the connecting block 14 inserted into the connecting compartment 13, making the tire puncturing frame more adaptable and more flexible in use.

[0052] Embodiment 2:

[0053] Reference Figure 5 The difference between this embodiment and embodiment 1 is that the detachable connection method between the first support base 11 and the second support base 12 is different.

[0054] refer to Figure 5 , 6Specifically, in this embodiment, a first flange 15 is installed at one end of the first support seat 11 close to the second support seat 12, and a second flange 16 is installed at one end of the second support seat 12 close to the first support seat 11. The first flange 15 and the second flange 16 can be fixedly connected, and flange screw holes are provided on the first flange 15 and the second flange 16, and the flange screw holes can be fixed by flange screws. By using the flange connection between the first flange 15 and the second flange 16, the connection of the support base 1 can withstand extremely high pressure and torque, making the connection between the first support seat 11 and the second support seat 12 more secure.

[0055] In addition, a fixing seat 17 is installed on the first flange 15, and the fixing seat 17 can fix the first flange 15 and the second flange 16. A fixing hole is opened at the end of the fixing seat 17 away from the first flange 15, and a tightening member 18 is provided on the fixing seat 17. The tightening member 18 is passed through the fixing hole. The tightening member 18 includes a tightening plate 181, a threaded screw 182, a fixed threaded sleeve 183, and a turntable 184. The fixed threaded sleeve 183 is installed in the fixing hole, the threaded screw 182 is passed through the fixed threaded sleeve 183, the tightening plate 181 is installed at the end of the threaded screw 182 close to the first flange 15, and the turntable 184 is installed at the end of the threaded screw 182 away from the first flange 15.

[0056] In actual use, the flange connection and the fixed seat 17 are double locked, and the turntable 184 rotates to drive the threaded screw 182 to rotate in the fixed threaded sleeve 183, so that the locking plate 181 on the threaded screw 182 can approach or move away from the first flange 15 and the second flange 16.

[0057] The implementation principle of the precast beam reinforcement binding frame that is easy to accurately position in the embodiment of the present application is: adjusting the length of the straight rod 31 according to the precast beam of the actual size required at the construction site.

[0058] The length of the straight rod 31 is adjusted by adjusting the length of the straight rod 31 inserted into the sliding layer 42 in the fixed shell 44. Sliding toward the supporting diagonal rod 22 increases the length of the straight rod 31, and vice versa, reduces the length of the straight rod 31.

[0059] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A prefabricated beam reinforcement tyre frame which is convenient for accurate positioning, characterized in that: The invention comprises a support base (1), two groups of support components (2) are symmetrically mounted on the support base (1), a plurality of groups of receiving components (3) are mounted on each of the support components (2), a sliding component (4) is mounted on each of the support components (2), and the receiving component (3) can be slidably arranged in the sliding component (4); The sliding member (4) comprises a fixed shell, a shock absorbing layer (41), a sliding layer (42), and a plurality of sliding balls (43); the shock absorbing layer (41) is installed in the fixed shell; the sliding layer (42) is installed on a side of the shock absorbing layer (41) away from the fixed shell (44); the plurality of sliding balls (43) are installed in the sliding layer (42) in a side-by-side and spaced manner; and the diameter of the sliding balls (43) is greater than the thickness of the sliding layer (42).

2. The prefabricated beam reinforcement tyre frame for facilitating accurate positioning according to claim 1, characterized in that: The support assembly (2) comprises a support vertical rod (21) and a support diagonal rod (22); the bottoms of the support vertical rod (21) and the support diagonal rod (22) are both mounted on the support base (1); the top of the support diagonal rod (22) is inclined toward the top of the support vertical rod (21); and the top of the support diagonal rod (22) is fixedly connected to the top of the support vertical rod (21).

3. The prefabricated beam reinforcement tyre frame for facilitating accurate positioning according to claim 2, characterized in that: The receiving member (3) comprises a plurality of straight rods (31) and a fixing plate (32); the plurality of straight rods (31) are installed on the fixing plate (32) at intervals, and the plurality of straight rods (31) are vertically connected to the fixing plate (32).

4. The prefabricated beam reinforcement tyre frame for facilitating accurate positioning according to claim 2, characterized in that: A locking piece (5) is installed on the support vertical rod (21), and the receiving piece (3) can be plugged into the locking piece (5); the locking piece (5) comprises an upper pipe clamp (51) and a lower pipe clamp (52); the upper pipe clamp (51) can be clamped with the lower pipe clamp (52) up and down; the lower pipe clamp (52) is provided with a rotation limit frame (53) at one end close to the support vertical rod (21); the upper pipe clamp (51) is provided with a rotation limit block (54) at one end close to the support vertical rod (21); the rotation limit block (54) can be rotatably arranged on the rotation limit frame (53); the upper pipe clamp (51) is provided with a fixing screw hole at one end away from the support vertical rod (21) and the lower pipe clamp (52) is provided with a fixing screw hole at one end away from the support vertical rod (21); the fixing screw hole can be locked and fixed by a pipe clamp fixing screw.

5. The prefabricated beam reinforcement tyre frame for facilitating accurate positioning according to claim 4, characterized in that: The upper pipe clamp (51) and the lower pipe clamp (52) are both provided with reinforcing ribs (55).

6. The prefabricated beam reinforcement binding cradle that facilitates accurate positioning according to claim 1 is characterized in that: The support base (1) comprises a first support base (11) and a second support base (12), and the first support base (11) and the second support base (12) are detachably connected.

7. The prefabricated beam reinforcement binding cradle that facilitates accurate positioning according to claim 6 is characterized by: A connection chamber (13) is provided at one end of the first support seat (11) close to the second support seat (12), and a connection block (14) is provided at one end of the second support seat (12) close to the first support seat (11). The connection block (14) can be plugged into the connection chamber (13), and a plurality of connection fixing screw holes are arranged at intervals on the connection block (14) and the first support seat (11) at the position of the connection chamber (13), and the connection fixing screw holes can be fixed by connection fixing screws.

8. The prefabricated beam reinforcement tyre frame for facilitating accurate positioning according to claim 6, characterized in that: A first flange (15) is installed at one end of the first support seat (11) close to the second support seat (12), and a second flange (16) is installed at one end of the second support seat (12) close to the first support seat (11). The first flange (15) and the second flange (16) can be fixedly connected, and flange screw holes are provided on the first flange (15) and the second flange (16), and the flange screw holes can be fixed by flange screws.

9. The prefabricated beam reinforcement binding cradle that facilitates accurate positioning according to claim 8, characterized in that: A fixing seat (17) is installed on the first flange (15), and the fixing seat (17) can fix the first flange (15) and the second flange (16). A fixing hole is opened at one end of the fixing seat (17) away from the first flange (15). A fastening member (18) is arranged on the fixing seat (17), and the fastening member (18) is inserted into the fixing hole. The fastening member (18) comprises a fastening plate (181), a threaded screw (182), a fixed threaded sleeve (183), and a rotating disk (184). The fixed threaded sleeve (183) is installed in the fixing hole, and the threaded screw (182) is inserted into the fixed threaded sleeve (183). The fastening plate (181) is installed at one end of the threaded screw (182) close to the first flange (15), and the rotating disk (184) is installed at one end of the threaded screw (182) away from the first flange (15).

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