Passive insulation board outer wall hanging tile construction structure

Abstract

The invention relates to a passive insulation board exterior wall tile hanging construction structure, which comprises a constructional column, a heat insulation board, an outer wall tile hanging structure and a heat insulation board hanging structure, wherein the constructional column is mounted in a wall body and protrudes relative to the heat insulation board; the bearing frame is arranged outside the heat preservation plate, and the constructional column supports the bearing frame; the roof battens are arranged on the bearing frame at equal intervals; the fixing assembly is arranged on the roof batten, the fixing assembly comprises a telescopic frame, a rotating rod and a fixing piece, the tail end of the telescopic frame is fixedly connected to the bottom of the roof batten, a rotating groove is formed in the end, away from the roof batten, of the telescopic frame in a penetrating mode, and the tail end of the rotating rod is rotationally arranged in the rotating groove; a spherical hinge is arranged at the end of the rotating rod, the fixing piece is arranged outside the spherical hinge, and the fixing piece is connected with a tile through a bolt. The mounting stability of the tile can be effectively improved, and tile falling caused by wind power or vibration is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of passive insulation board construction, and in particular to a passive insulation board exterior wall tile hanging construction structure. Background Art

[0002] At present, wall insulation and exterior wall decoration are important components of the construction field, especially in cold areas. Reasonable insulation measures can not only improve the energy efficiency of buildings, but also improve indoor comfort. Passive insulation boards have good thermal insulation effects when used as outdoor walls. In actual construction, passive insulation boards are used as outer walls, and certain decorations need to be done on the insulation boards, such as real stone paint spraying, ceramic tile dry hanging, etc.

[0003] In order to achieve an effective combination of insulation board and tiles, the existing technical solutions usually adopt the method of installing tile hanging strips on the outside of the insulation board and then hanging tiles through the tile hanging strips, which leads to insufficient connection strength and easily causes tiles to fall off, especially in the case of strong winds or natural disasters such as earthquakes, which poses a great safety hazard. In addition, due to its own low strength, the passive insulation board is prone to deformation during the dry hanging of ceramic tiles, or ceramic tiles fall off due to loose fixing, which affects the integrity and thermal insulation of the structure as well as the appearance of the exterior wall, and is not sufficient to provide sufficient rigidity.

[0004] In view of the above-mentioned related technologies, it is necessary to propose a passive insulation board exterior wall tile hanging construction structure to solve one of the above-mentioned technical problems. Summary of the invention

[0005] In order to solve one of the above-mentioned technical problems, the present application provides a passive insulation board exterior wall tile hanging construction structure.

[0006] The passive insulation board exterior wall tile hanging construction structure provided in this application adopts the following technical solution: A passive thermal insulation board exterior wall tile hanging construction structure, comprising: A structural column, wherein a plurality of structural columns are provided, installed in the wall and protruding relative to the insulation board; A bearing frame is arranged outside the insulation board, and the structural column supports the bearing frame; A plurality of tile hanging bars are provided and arranged at equal intervals on the bearing frame for hanging tiles; and A fixing component is arranged on the tile hanging strip, and the tile can be fixed on the tile hanging strip through the fixing component. The fixing component includes a telescopic frame, a rotating rod and a fixing plate. The tail end of the telescopic frame is fixedly connected to the bottom of the tile hanging strip, and a rotating groove is penetrated through the end of the telescopic frame away from the tile hanging strip. The tail end of the rotating rod is rotatably arranged in the rotating groove and is provided with a locking piece. The end of the rotating rod is provided with a ball hinge, and the fixing plate is arranged on the outside of the ball hinge. The fixing plate is connected to the tile by bolts.

[0007] By adopting the above technical scheme, the passive insulation board exterior wall tile hanging construction structure can effectively improve the installation stability of tiles and prevent tiles from falling off due to wind or vibration; specifically, the setting of the structural column enables the bearing frame to be firmly fixed on the wall, ensuring the firmness of the entire structure; the equally spaced arrangement of the tile hanging strips not only ensures the uniform distribution of tiles, but also facilitates installation and maintenance; the design of the fixing component is particularly critical, the telescopic frame can adapt to tiles of different sizes, the rotating rod and the ball hinge allow the fixing plate to adjust the angle within a certain range to ensure a suitable fit with the tile, and the fixing plate is connected to the tile by bolts, which further enhances the reliability of the fixation; in addition, this design can also reduce manual operations during the construction process and improve construction efficiency.

[0008] Optionally, it also includes an anti-skid component, which is arranged on the top of the tile hanging strip, and the tile hanging claws are hung on the top of the tile hanging strip. The anti-skid component includes a plurality of combination seats, springs and anti-skid plates. The combination seat is arranged on the top of the tile hanging strip away from the tile hanging claws. The combination seat is penetrated by a mounting groove, and the spring is arranged in the mounting groove. The tail end of the anti-skid plate is connected to the spring, and the tile hanging claws are pressed tightly under the end of the anti-skid plate.

[0009] By adopting the above technical solution, the setting of the anti-slip component effectively prevents the tiles from sliding on the tile hanging strips, ensuring the stability of the tile installation; specifically, the tail end of the anti-slip plate is connected to the spring, and when the tile claws are hung on the tile hanging strips, the bottom end of the anti-slip plate will press the tile claws, and the elastic force of the spring will make the anti-slip plate fit closely to the tile claws, increasing the contact area and friction between the two, thereby improving the stability of the tiles and avoiding the loosening or falling off of the tiles due to external factors.

[0010] Optionally, a rough surface layer is provided at the bottom of the anti-slip plate to increase the friction with the surface of the tile hook.

[0011] By adopting the above technical solution, the tiles can be effectively prevented from sliding on the tile hanging strips, thereby improving the stability and safety of the tiles.

[0012] Optionally, a plurality of fixing sleeves are provided at the rear end of the bearing frame, and the plurality of fixing sleeves are sleeved on the protruding parts of the structural columns and fixedly connected by bolts.

[0013] By adopting the above technical solution, the connection between the bearing frame and the structural column is made more stable and reliable, the stability and safety of the entire structure are improved, and the loosening or falling of the structure due to external factors is effectively prevented, ensuring the construction quality and long-term performance.

[0014] Optionally, a combination groove is provided through the inner side of the supporting frame, and a combination block is fixedly connected to one end of the tile hanging strip close to the combination groove. The combination block is slidably connected in the combination groove. After the position adjustment is completed, the combination block is fastened in the combination groove by bolts.

[0015] By adopting the above technical solution, the position of the tile hanging strips can be flexibly adjusted according to actual needs to ensure that the tiles can be stably hung in different positions, thereby improving the flexibility and adaptability of the construction; at the same time, the close fit between the combination blocks and the combination grooves ensures the stability of the tile hanging strips after fixation, effectively preventing loosening or falling off due to external factors, thereby improving the safety and reliability of the entire structure.

[0016] Optionally, a plurality of reinforcing rods are further included, and the plurality of reinforcing rods are used to reinforce the tile hanging strips and the bearing frame after their positions are fixed.

[0017] By adopting the above technical solution, the use of reinforcement rods significantly enhances the structural stability between the tile hanging strips and the bearing frame, prevents structural loosening due to changes in the external environment or long-term use, and improves the safety and reliability of the entire construction structure.

[0018] Optionally, elastic rubber pads are provided on the sides of the bearing frame and the tile hanging strips close to the insulation board.

[0019] By adopting the above technical solution, the elastic rubber pads arranged on the side of the bearing frame and the tile hanging strip close to the insulation board can not only effectively reduce the hard contact between the tile hanging strip and the insulation board, avoiding wear problems caused by long-term use, but also improve the seismic performance of the entire structure to a certain extent, ensuring that when the external environment changes, the connection between the insulation board and the tile hanging strip is more stable and reliable.

[0020] Optionally, the telescopic frame includes a base and a telescopic block, the base is fixedly connected to the bottom of the tile hanging strip, the base is penetrated by a telescopic groove, the telescopic block is slidably connected in the telescopic groove, and the rotating groove is arranged at the end of the telescopic block.

[0021] By adopting the above technical solution, the telescopic adjustment of the telescopic frame is realized, so that the position of the rotating rod is telescopically adjusted, so that the fixing plate is adapted to the connection position of the tile, thereby improving the connection effect.

[0022] Optionally, the base and the telescopic block are both provided with a plurality of fixing holes, wherein fixing rods are provided in the overlapping fixing holes.

[0023] By adopting the above technical solution, the design of the fixing holes and the fixing rods enables the telescopic frame to maintain this state firmly after being adjusted to an appropriate length, effectively preventing the telescopic frame from loosening or falling off due to external forces, thereby ensuring the stable suspension and safety of the tiles; at the same time, this design also facilitates rapid on-site installation and debugging, thereby improving construction efficiency.

[0024] Optionally, the locking member includes a rotating shaft, which is arranged in the rotating groove and connected to the tail end of the rotating rod, both ends of the rotating shaft pass through the rotating groove and extend to the outside, and the outer surfaces of the extended parts at both ends of the rotating shaft are provided with threaded strips. The rotating shaft is threadedly connected to the threaded strips on the rotating shaft through a nut to fix the angle of the rotating shaft.

[0025] By adopting the above technical solution, the angle of the rotating rod is accurately fixed, ensuring the stability and safety of the tiles on the tile hanging strips; specifically, the rotating shaft is connected to the tail end of the rotating rod and fixed by a nut, so that the rotating rod can be reliably locked at any desired angle, avoiding loosening or falling off due to external factors; at the same time, the matching design of the nut and the threaded strip also facilitates rapid adjustment and maintenance on site.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the arrangement of structural columns and bearing frames, effective stress is provided to the outer hanging tiles or other structures requiring support at the insulation board. This construction structure can not only enhance the rigidity of the passive insulation board itself, but also will not occupy the effective use space in the room. It can effectively bear the weight of the outer tiles, effectively prevent the deformation of the passive insulation board and the falling off of the outer tiles, effectively improve the wind pressure resistance and seismic performance of the entire structure, and solve the problem of insufficient connection strength in the prior art; 2. The design of the tile hanging strips and fixing components realizes the rapid installation and reliable fixation of tiles, significantly improves the construction efficiency and simplifies the installation process; the telescopic frame and rotating rod structure in the fixing component have good adjustment capabilities and can adapt to tiles of different sizes and shapes, enhancing the flexibility and design diversity of the overall structure, and overcoming the defect of poor flexibility of the fixing device in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1It is a three-dimensional view of a passive insulation board exterior wall tile construction structure in this application.

[0028] Figure 2 It is a front view of a passive insulation board exterior wall tile hanging construction structure (with reinforcement rods) in this application.

[0029] Figure 3 It is a rear view of a passive insulation board exterior wall tile hanging construction structure (with reinforcement rods) in this application.

[0030] Figure 4 yes Figure 1 A schematic diagram of the enlarged structure at point A in the middle.

[0031] Figure 5 yes Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0032] Figure 6 It is a partial side sectional view of a passive insulation board exterior wall tile hanging construction structure (installed at the exterior wall and the passive insulation board) in the present application.

[0033] In the figure: 1. structural column; 2. bearing frame; 21. fixing sleeve; 22. combination groove; 3. tile hanging strip; 31. combination block; 4. fixing assembly; 41. telescopic frame; 411. base; 412. telescopic block; 413. fixing hole; 414. fixing rod; 42. rotating rod; 43. fixing plate; 44. rotating groove; 45. locking piece; 451. rotating shaft; 452. threaded strip; 46. ball hinge; 5. anti-skid assembly; 51. combination seat; 52. spring; 53. anti-skid plate; 531. rough surface layer; 54. placement groove; 6. reinforcement rod; 7. elastic rubber pad; 8. exterior wall; 81. passive insulation board; 9. tile. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-6 This application is described in further detail.

[0035] refer to Figure 1-4 The embodiment of the present application discloses a passive insulation board exterior wall tile hanging construction structure, including a structural column 1, a bearing frame 2, a tile hanging strip 3 and a fixing component 4.

[0036] There are multiple structural columns 1, which are installed in the wall and protrude relative to the insulation board; the bearing frame 2 is arranged outside the insulation board, and the structural column 1 supports the bearing frame 2; there are multiple tile hanging strips 3 and they are arranged on the bearing frame 2 at equal intervals for hanging tiles; the fixing component 4 is arranged on the tile hanging strips 3, and the tiles can be fixed on the tile hanging strips 3 through the fixing component 4, and the fixing component 4 includes a telescopic frame 41, a rotating rod 42 and a fixing plate 43, the tail end of the telescopic frame 41 is fixedly connected to the bottom of the tile hanging strip 3, and a rotating groove 44 is penetrated at one end of the telescopic frame 41 away from the tile hanging strip 3, the tail end of the rotating rod 42 is rotatably set in the rotating groove 44, and a locking piece 45 is provided, the end of the rotating rod 42 is provided with a ball hinge 46, the fixing plate 43 is arranged outside the ball hinge 46, and the fixing plate 43 is connected to the tile by bolts.

[0037] The passive insulation board exterior wall tile hanging construction structure can effectively improve the installation stability of tiles and prevent tiles from falling off due to wind or vibration; specifically, the setting of the structural column 1 enables the bearing frame 2 to be firmly fixed on the wall, ensuring the firmness of the entire structure; the equidistant arrangement of the tile hanging strips 3 not only ensures the uniform distribution of tiles, but also facilitates installation and maintenance; the design of the fixing component 4 is particularly critical, the telescopic frame 41 adjusts the position of the rotating rod 42 and the fixing plate 43, the rotating rod 42 can realize the angle rotation of the fixing plate 43, and the telescopic frame 41 can adapt to tiles of different sizes, the rotating rod 42 and the ball hinge 46 allow the fixing plate 43 to adjust the angle within a certain range to ensure a suitable fit with the tile, and the fixing plate 43 is connected to the tile by bolts, which further enhances the reliability of the fixation; in addition, this design can also reduce manual operations during the construction process and improve construction efficiency.

[0038] refer to Figure 5 In this embodiment, more specifically, an anti-skid component 5 is further included, which is arranged on the top of the tile hanging strip 3, and the tile hanging claw is hung on the top of the tile hanging strip 3. The anti-skid component 5 includes a plurality of combination seats 51, a spring 52 and an anti-skid plate 53. The combination seat 51 is arranged on the top of the tile hanging strip 3 away from the tile hanging claw. The combination seat 51 is penetrated by a placement groove 54, and the spring 52 is arranged in the placement groove 54. The tail end of the anti-skid plate 53 is connected to the spring 52, and the end of the anti-skid plate 53 is pressed tightly against the tile hanging claw. The setting of the sliding component 5 effectively prevents the tiles from sliding on the tile hanging strips 3, ensuring the stability of the tile installation; specifically, the tail end of the anti-skid plate 53 is connected to the spring 52, and when the tile claws are hung on the tile hanging strips 3, the bottom end of the anti-skid plate 53 will press the tile claws, and the elastic force of the spring 52 will make the anti-skid plate 53 fit closely with the tile claws, increasing the contact area and friction between the two, thereby improving the stability of the tiles and avoiding the loosening or falling off of the tiles due to external factors.

[0039] refer to Figure 5In this embodiment, more specifically, a rough surface layer 531 is provided at the bottom of the anti-slip plate 53 to increase the friction with the surface of the tile hanging claw, effectively prevent the tile from sliding on the tile hanging bar 3, and improve the stability and safety of the tile.

[0040] refer to Figure 3 In the present embodiment, more specifically, a plurality of fixing sleeves 21 are provided at the rear end of the bearing frame 2, and the plurality of fixing sleeves 21 are sleeved on the protruding portion of the structural column 1 and fixedly connected by bolts, so that the connection between the bearing frame 2 and the structural column 1 is more stable and reliable, thereby improving the stability and safety of the entire structure, effectively preventing the loosening or falling off of the structure due to external factors, and ensuring the construction quality and long-term performance.

[0041] refer to Figure 1 In the present embodiment, more specifically, a combination groove 22 is provided through the inner side of the bearing frame 2, and a combination block 31 is fixedly connected to one end of the tile hanging strip 3 close to the combination groove 22, and the combination block 31 is slidably connected in the combination groove 22. After the position adjustment is completed, the combination block 31 is fastened in the combination groove 22 by bolts, and the position of the tile hanging strip 3 can be flexibly adjusted according to actual needs to ensure that the tiles can be stably hung at different positions, thereby improving the flexibility and adaptability of the construction; at the same time, the close fit between the combination block 31 and the combination groove 22 ensures the stability of the tile hanging strip 3 after being fixed, effectively prevents loosening or falling off due to external factors, and improves the safety and reliability of the entire structure.

[0042] refer to Figure 2 In the present embodiment, more specifically, a plurality of reinforcing rods 6 are further included, and the plurality of reinforcing rods 6 are used to reinforce the tile hanging strips 3 and the bearing frame 2 after the positions are fixed. The use of the reinforcing rods 6 significantly enhances the structural stability between the tile hanging strips 3 and the bearing frame 2, prevents the structural loosening due to changes in the external environment or long-term use, and improves the safety and reliability of the entire construction structure.

[0043] refer to Figure 3 In the present embodiment, more specifically, elastic rubber pads 7 are arranged on one side of the supporting frame 2 and the tile hanging strip 3 close to the insulation board. The elastic rubber pads 7 arranged on the one side of the supporting frame 2 and the tile hanging strip 3 close to the insulation board can not only effectively reduce the hard contact between the tile hanging strip 3 and the insulation board, avoiding the wear problem caused by long-term use, but also can improve the seismic performance of the whole structure to a certain extent, ensuring that when the external environment changes, the connection between the insulation board and the tile hanging strip 3 is more stable and reliable.

[0044] refer to Figure 4In the present embodiment, more specifically, the telescopic frame 41 includes a base 411 and a telescopic block 412. The base 411 is fixedly connected to the bottom of the tile hanging strip 3. A telescopic groove is provided through the base 411. The telescopic block 412 is slidably connected in the telescopic groove. The rotating groove 44 is provided at the end of the telescopic block 412 to realize the telescopic adjustment of the telescopic frame 41, thereby telescopically adjusting the position of the rotating rod 42 so that the fixing plate 43 can adapt to the connection position of the tile to improve the connection effect.

[0045] refer to Figure 4 In the present embodiment, more specifically, a plurality of fixing holes 413 are provided through the base 411 and the telescopic block 412, wherein fixing rods 414 are provided in the overlapping fixing holes 413. The design of the fixing holes 413 and the fixing rods 414 enables the telescopic frame 41 to firmly maintain the state after being adjusted to a suitable length, thereby effectively preventing the telescopic frame 41 from loosening or falling off due to external force, thereby ensuring the stable suspension and safety of the tile; at the same time, this design also facilitates rapid on-site installation and debugging, thereby improving construction efficiency.

[0046] refer to Figure 4 The locking member 45 includes a rotating shaft 451, which is arranged in the rotating groove 44 and connected to the tail end of the rotating rod 42. Both ends of the rotating shaft 451 pass through the rotating groove 44 and extend to the outside. The outer surfaces of the extended parts at both ends of the rotating shaft 451 are provided with threaded strips 452. The rotating shaft 451 is threadedly connected to the threaded strips 452 on the rotating shaft 451 through nuts. The angle of the rotating shaft 451 is fixed, and the angle of the rotating rod 42 is accurately fixed, ensuring the stability and safety of the tile on the tile hanging strip 3. Specifically, the rotating shaft 451 is connected to the tail end of the rotating rod 42 and fixed by a nut, so that the rotating rod 42 can be reliably locked at any desired angle, avoiding the problem of loosening or falling off due to external factors. At the same time, the matching design of the nut and the threaded strip 452 also facilitates rapid adjustment and maintenance on site.

[0047] The implementation principle of a passive insulation board exterior wall tile hanging construction structure in an embodiment of the present application is: through the combination of structural columns 1, load-bearing frames 2 and tile hanging strips 3, the strength of the insulation board is enhanced, the effective combination of the insulation board and the tiles is achieved, and the entire structure is made more stable, effectively avoiding the risk of tiles falling off due to wind or earthquakes; the anti-slip component 5 on the tile hanging strip 3 can effectively prevent the tiles from sliding under the action of wind; the fixing component 4 has good adjustability and stability, can adapt to the installation of tiles of different sizes and shapes, and further improves the connection strength and safety of the tiles.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A passive insulation board exterior wall tile construction structure, characterized in that: include: A structural column (1), wherein a plurality of structural columns (1) are provided, installed in the wall and protruding relative to the insulation board; A bearing frame (2) is arranged outside the thermal insulation board, and the structural column (1) supports the bearing frame (2); A plurality of tile hanging bars (3) are arranged at equal intervals on the bearing frame (2) and are used for hanging tiles; and A fixing assembly (4) is arranged on the tile hanging strip (3), and the tile can be fixed on the tile hanging strip (3) through the fixing assembly (4). The fixing assembly (4) comprises a telescopic frame (41), a rotating rod (42) and a fixing plate (43). The rear end of the telescopic frame (41) is fixedly connected to the bottom of the tile hanging strip (3). A rotating groove (44) is provided through the end of the telescopic frame (41) away from the tile hanging strip (3). The rear end of the rotating rod (42) is rotatably arranged in the rotating groove (44) and is provided with a locking piece (45). A ball hinge (46) is provided at the end of the rotating rod (42). The fixing plate (43) is arranged outside the ball hinge (46). The fixing plate (43) is connected to the tile by bolts.

2. A passive insulation board exterior wall tile construction structure according to claim 1, characterized in that: It also includes an anti-skid component (5) which is arranged on the top of the tile hanging strip (3), and the tile hanging claw is hung on the top of the tile hanging strip (3). The anti-skid component (5) includes a plurality of combination seats (51), a spring (52) and an anti-skid plate (53). The combination seat (51) is arranged on the top of the tile hanging strip (3) away from the tile hanging claw. The combination seat (51) is provided with a placement groove (54) running through it. The spring (52) is arranged in the placement groove (54). The tail end of the anti-skid plate (53) is connected to the spring (52), and the bottom of the end of the anti-skid plate (53) presses the tile hanging claw tightly.

3. A passive insulation board exterior wall tile construction structure according to claim 2, characterized in that: The bottom of the anti-slip plate (53) is provided with a rough surface layer (531) to increase the friction between the surface of the hanging claw and the tile.

4. A passive thermal insulation board exterior wall tile hanging construction structure according to claim 1, characterized in that: A plurality of fixing sleeves (21) are provided at the rear end of the bearing frame (2); the plurality of fixing sleeves (21) are sleeved on the protruding parts of the structural columns (1) and fixedly connected by bolts.

5. The passive thermal insulation board exterior wall tile hanging construction structure according to claim 1 is characterized by: A combination groove (22) is provided through the inner side of the bearing frame (2); a combination block (31) is fixedly connected to one end of the tile hanging strip (3) close to the combination groove (22); the combination block (31) is slidably connected in the combination groove (22); after the position adjustment is completed, the combination block (31) is fastened in the combination groove (22) by bolts.

6. The passive insulation board exterior wall tile hanging construction structure according to claim 1 is characterized by: It also comprises a plurality of reinforcing rods (6), wherein the plurality of reinforcing rods (6) are used to reinforce the tile hanging strips (3) and the bearing frame (2) after the positions are fixed.

7. The passive insulation board exterior wall tile hanging construction structure according to claim 1 is characterized by: The bearing frame (2) and the tile hanging strip (3) are both provided with elastic rubber pads (7) on one side close to the insulation board.

8. The passive insulation board exterior wall tile hanging construction structure according to claim 1 is characterized by: The telescopic frame (41) comprises a base (411) and a telescopic block (412); the base (411) is fixedly connected to the bottom of the tile hanging strip (3); a telescopic groove is provided through the base (411); the telescopic block (412) is slidably connected in the telescopic groove; and the rotating groove (44) is provided at the end of the telescopic block (412).

9. A passive thermal insulation board exterior wall tile hanging construction structure according to claim 8, characterized in that: The base (411) and the telescopic block (412) are both provided with a plurality of fixing holes (413) penetrating therethrough, wherein fixing rods (414) are provided in the overlapping fixing holes (413).

10. The passive insulation board exterior wall tile hanging construction structure according to claim 1, characterized in that: The locking member (45) comprises a rotating shaft (451), wherein the rotating shaft (451) is arranged in the rotating groove (44) and connected to the tail end of the rotating rod (42), and both ends of the rotating shaft (451) pass through the rotating groove (44) and extend to the outside, and both ends of the extending portion of the rotating shaft (451) are provided with thread strips (452) on the outer surfaces, and the rotating shaft (451) is threadedly connected to the thread strips (452) on the rotating shaft (451) by a nut, so as to fix the angle of the rotating shaft (451).

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