Adjustable connection for temporary support structures in plant expansions

Abstract

The utility model relates to the technical field of building construction auxiliary equipment, especially the adjustable connecting piece of temporary support structure for plant reconstruction and extension, including rectangular support beam frame, the rectangular support beam frame is provided with two, the outside of two rectangular support beam frame is sleeved with fixed assembly, the fixed assembly is provided with four, the upper end fixed connection of fixed assembly has adjustment assembly, the adjustment assembly is provided with two, the front and back sides of two adjustment assembly all are fixedly connected with suspension assembly, suspension assembly is provided with four. The utility model discloses the adjustable connecting piece of temporary support structure for plant reconstruction and extension, and the convenient accurate regulation of support length is realized through adjustment assembly, and fixed assembly guarantees the stable and flexible connection, and suspension assembly improves the installation adaptability, and the whole provides the efficient and safe solution scheme for the temporary support of plant reconstruction and extension.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment for building construction, and in particular to an adjustable connector for temporary support structures used in factory renovation and expansion. Background Technology

[0002] During the renovation and expansion of the factory building, temporary support structures are used to support and stabilize parts of the building's structure to ensure structural safety during construction. However, existing temporary support structures and their connectors have many problems.

[0003] Existing technical problems: 1. Traditional temporary support structures are usually of fixed length or have complex and cumbersome adjustment methods. When facing factory renovation and expansion projects with different span or height requirements, it is difficult to quickly and conveniently adjust the length of the support structure, resulting in low construction efficiency; 2. Existing connectors have insufficient connection strength or poor stability when connected to components such as support beams. When subjected to large external forces or vibrations during construction, they are prone to loosening or falling off, posing a great threat to construction safety; 3. For situations where temporary support structures need to be suspended from the factory roof or other locations, existing suspension components are often not flexible enough and cannot adapt well to different suspension angles and installation environments, limiting the application scenarios of temporary support structures; Therefore, it is necessary to design adjustable connectors for temporary support structures for factory renovation and expansion to solve the above problems. Utility Model Content

[0004] The main purpose of this utility model is to provide an adjustable connector for a temporary support structure used in the renovation and expansion of factory buildings, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] Adjustable connectors for temporary support structures used in factory renovation and expansion include rectangular support beams, two of which are provided. Fixing components are sleeved on the outer sides of the two rectangular support beams, four of which are provided. Adjusting components are fixedly connected to the upper ends of the fixing components, two of which are provided. Suspension components are fixedly connected to the front and rear sides of the two adjusting components, four of which are provided.

[0007] Preferably, the adjustment component includes a front plate, and an I-shaped insert is fixedly connected to the rear end of the front plate. The surface of the I-shaped insert has multiple pressure grooves, and a docking component is sleeved on the outer side of the I-shaped insert.

[0008] Preferably, the docking component includes a rear plate, the front end of which has an I-shaped groove, a support block fixedly connected to the upper front part of the rear plate, a movable groove located in front of the support block, a limit groove at the lower front part of the support block, a first adjusting screw threadedly connected to the middle upper part of the support block, a first screw block fixedly connected to the upper end of the first adjusting screw, a limit block movably connected to the lower end of the first adjusting screw via a bearing, and a blocking block fixedly connected to the front lower end of the limit block.

[0009] Preferably, the fixing component includes a second screw block and a connecting frame. A second adjusting screw is fixedly connected to the rear end of the second screw block. A front clamping block is movably connected to the rear end of the second adjusting screw via a bearing. A slider is fixedly connected to the bottom of the front clamping block. A rear connecting shaft is fixedly connected to the middle of the rear frame wall of the connecting frame. A rear clamping plate is fixedly connected to the front end of the rear connecting shaft. A sliding groove is opened at the front of the lower frame wall of the connecting frame. The second adjusting screw is threadedly connected to the middle of the front end of the connecting frame. The connecting frame is fixedly connected to the middle of the lower end of the front plate or the rear plate, respectively.

[0010] Preferably, the suspension assembly includes a mounting block, a connecting hook is fixedly connected to the middle of the outer side of the mounting block, a rotating shaft is inserted and connected to one side of the top of the connecting hook, a suspension chain is movably connected to the connecting hook through the rotating shaft, and a mounting base is fixedly connected to the other end of the suspension chain. The mounting block is fixedly connected to the middle of the outer side of the front plate or the rear plate respectively.

[0011] Preferably, the pressure grooves are arranged at equal intervals along the length of the I-shaped insert, and the position and size of the pressure grooves correspond to the bottom of the blocking block. The front plate and the docking component are symmetrically distributed front and back, and the position and size of the I-shaped insert corresponds to the position and size of the I-shaped groove.

[0012] Preferably, the rear plate has the same external shape as the front plate, and both the rear plate and the front plate are long rectangular plate structures. The width of the movable groove is adapted to the width of the blocking block, and the movable groove is connected to the I-shaped groove. The rear side of the limiting block is movably connected in the limiting groove.

[0013] Preferably, the connecting frame has a rectangular frame structure, the front clamping block and the rear clamping plate are distributed in a front-to-back manner, and the opposing surfaces of the front clamping block and the rear clamping plate are both arc-shaped structures, and the slider is slidably connected in the groove.

[0014] Preferably, the connecting hook has an upwardly curved hook-shaped structure and the bending angle of the connecting hook is 90 degrees. The suspension chain is rotatably connected to the connecting hook through a rotating shaft, and the rotation angle range of the suspension chain is 0-180 degrees.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this utility model, the adjustment component provides a stable guiding effect for length adjustment through the matching and cooperation of the I-shaped plug and the I-shaped groove, avoiding deviation or shaking during adjustment. Multiple equally spaced pressure grooves and blocking blocks form a multi-level adjustment structure. Only the first screw block needs to be rotated to control the blocking block to disengage or engage with the pressure groove. Length adjustment can be completed without disassembling the parts, making the operation highly efficient. At the same time, the threaded transmission design of the first adjustment screw ensures adjustment accuracy and can flexibly adapt to the support requirements of different spans, greatly improving the convenience of construction.

[0017] 2. In this utility model, the arc-shaped opposing surfaces of the front clamping block and the rear clamping plate in the fixing assembly can closely fit the surface of the rectangular support beam, increasing the contact friction. The sliding cooperation between the slider and the slide groove ensures that the front clamping block moves smoothly and the clamping force is uniform. The threaded connection of the second adjusting screw can precisely control the clamping force, which can not only ensure a firm connection, but also facilitate installation and disassembly, effectively prevent the connection from loosening or falling off, and improve the reliability of the overall structure.

[0018] 3. In this utility model, the suspension chain in the suspension assembly can rotate from 0 to 180 degrees through the rotating shaft and the connecting hook, which can flexibly adapt to different suspension angles and complex factory roof structures. The hook-shaped structure with a 90-degree upward bend ensures a stable connection with the suspension chain and prevents it from falling off. The four suspension components are symmetrically distributed on both sides of the adjustment component, which ensures the force balance during suspension and enables the support structure to work stably in various installation environments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the adjustable connector of the temporary support structure for factory renovation and expansion according to this utility model.

[0020] Figure 2 This is a schematic diagram of the adjustable component structure of the adjustable connector for the temporary support structure used in the renovation and expansion of factory buildings according to this utility model.

[0021] Figure 3 This is a schematic diagram of the docking component structure of the adjustable connector for the temporary support structure used in the renovation and expansion of factory buildings according to this utility model;

[0022] Figure 4 This is a schematic diagram of the disassembled structure of the fixing component of the adjustable connector of the temporary support structure for factory renovation and expansion of this utility model.

[0023] Figure 5 This is a schematic diagram of the suspension assembly structure of the adjustable connector of the temporary support structure for factory renovation and expansion according to this utility model.

[0024] Figure 6This is a detailed enlarged structural diagram of point A of the adjustable connector of the temporary support structure for factory renovation and expansion according to this utility model.

[0025] In the diagram: 1. Suspension assembly; 2. Rectangular support beam; 3. Fixing assembly; 4. Adjustment assembly; 41. Front plate; 42. I-shaped insert; 43. Pressure groove; 44. Connecting component; 441. Rear plate; 442. Movable groove; 443. I-shaped groove; 444. First screw block; 445. First adjusting screw; 446. Limiting block; 447. Blocking block; 448. Support block; 449. Limiting groove; 31. Second screw block; 32. Second adjusting screw; 33. Front clamping block; 34. Slider; 35. Connecting frame; 36. Slide groove; 37. Rear clamping plate; 38. Rear connecting shaft; 11. Mounting block; 12. Connecting hook; 13. Rotating shaft; 14. Suspension chain; 15. Mounting base. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Please see Figure 1-6 This utility model provides a technical solution:

[0030] Adjustable connectors for temporary support structures used in factory renovation and expansion include rectangular support beams 2, two rectangular support beams 2 are provided, and fixed components 3 are sleeved on the outer sides of the two rectangular support beams 2, four fixed components 3 are provided, and an adjustment component 4 is fixedly connected to the upper end of the fixed component 3, two adjustment components 4 are provided, and suspension components 1 are fixedly connected to the front and rear sides of the two adjustment components 4, four suspension components 1 are provided.

[0031] In this embodiment, the adjusting component 4 includes a front plate 41, with an I-shaped insert 42 fixedly connected to the rear end of the front plate 41. The surface of the I-shaped insert 42 has multiple pressure grooves 43. A docking component 44 is sleeved on the outer side of the I-shaped insert 42. The docking component 44 includes a rear plate 441, with an I-shaped groove 443 at the front end. A support block 448 is fixedly connected to the upper front part of the rear plate 441. A movable groove 442 is located at the front side of the support block 448. A limit groove 449 is opened at the lower front end of the support block 448. A first adjusting screw 445 is threadedly connected to the middle of the upper end of the support block 448. A first tightening block 444 is fixedly connected to the upper end of the first adjusting screw 445. The lower end of the adjusting screw 445 is movably connected to the limiting block 446 via a bearing. The front of the lower end of the limiting block 446 is fixedly connected to the blocking block 447. The pressing grooves 43 are arranged at equal intervals along the length of the I-shaped insert 42, and the position and size of the pressing grooves 43 correspond to the bottom of the blocking block 447. The front plate 41 and the docking part 44 are symmetrically distributed front and rear. The position and size of the I-shaped insert 42 correspond to the position and size of the I-shaped groove 443. The rear plate 441 has the same external shape as the front plate 41, and both the rear plate 441 and the front plate 41 are long rectangular plate structures. The width of the movable groove 442 is adapted to the width of the blocking block 447, and the movable groove 442 is connected to the I-shaped groove 443. The rear side of the limiting block 446 is movably connected in the limiting groove 449.

[0032] Through the above scheme: When the adjusting component 4 is working, the I-shaped insert 42 at the rear end of the front plate 41 can be inserted into the I-shaped groove 443 at the front end of the rear plate 441 to achieve initial docking. When the length needs to be adjusted, the first screw 444 is rotated to drive the first adjusting screw 445 to rotate, so that the limiting block 446 moves upward in the limiting groove 449 of the support block 448, thereby driving the blocking block 447 to disengage from the pressing groove 43 on the surface of the I-shaped insert 42 from the movable groove 442. At this time, the front plate 41 and the rear plate 441 can be pushed to move relative to each other to adjust the overall length. After the adjustment is completed, the first screw 444 is rotated in the opposite direction, so that the blocking block 447 moves downward under the action of the limiting block 446. The length is fixed by moving downward and locking into the corresponding pressure groove 43. This solution ensures stability and guidance during adjustment through the cooperation of the I-shaped insert 42 and the I-shaped groove 443. Multiple pressure grooves 43 arranged at equal intervals cooperate with the blocking block 447 to achieve precise adjustment at multiple levels. The symmetrical design of the front plate 41 and the rear plate 441 and the long rectangular plate structure ensure the balance and connection strength of the overall structure. The size adaptation of the movable groove 442 and the blocking block 447 and the movable connection of the limiting block 446 in the limiting groove 449 ensure the smoothness of the adjustment process and the reliability of locking, thereby realizing convenient, stable and precise adjustment of the length of the support structure.

[0033] In this embodiment, the fixing component 3 includes a second screw block 31 and a connecting frame 35. The rear end of the second screw block 31 is fixedly connected to a second adjusting screw 32. The rear end of the second adjusting screw 32 is movably connected to a front clamping block 33 via a bearing. The bottom of the front clamping block 33 is fixedly connected to a slider 34. The middle of the rear frame wall of the connecting frame 35 is fixedly connected to a rear connecting shaft 38. The front end of the rear connecting shaft 38 is fixedly connected to a rear clamping plate 37. The front of the lower frame wall of the connecting frame 35 has a sliding groove 36. The second adjusting screw 32 is threadedly connected to the middle of the front end of the connecting frame 35. The connecting frame 35 is fixedly connected to the lower middle of the front plate 41 or the rear plate 441. The connecting frame 35 has a rectangular frame structure. The front clamping block 33 and the rear clamping plate 37 are distributed in a front-to-back manner, and the opposing surfaces of the front clamping block 33 and the rear clamping plate 37 are both arc-shaped. The slider 34 is slidably connected in the sliding groove 36.

[0034] Through the above scheme: When the fixing component 3 is working, when it is necessary to fix the rectangular support beam 2, the rectangular support beam 2 is placed between the front clamping block 33 and the rear clamping plate 37 in the connecting frame 35. Rotating the second screw block 31 drives the second adjusting screw 32 to rotate threadedly in the middle of the front end of the connecting frame 35. Since the rear end of the second adjusting screw 32 is movably connected to the front clamping block 33 through a bearing, and the slider 34 at the bottom of the front clamping block 33 is slidably connected in the groove 36 at the front of the lower frame wall of the connecting frame 35, the front clamping block 33 will move smoothly backward under the push of the second adjusting screw 32, cooperating with the rear clamping plate 37 fixed in the middle of the rear frame wall of the connecting frame 35 through the rear connecting shaft 38, thus clamping and fixing the rectangular support beam 2. The connecting frame 35 is fixedly connected to the lower middle part of the front plate 41 or the rear plate 441, thereby realizing a stable connection between the rectangular support beam 2 and the adjusting component 4. This scheme provides a stable support foundation through the rectangular frame structure of the connecting frame 35. The front and rear relative distribution and arc-shaped relative surface design of the front clamping block 33 and the rear clamping plate 37 can better fit the surface of the rectangular support beam 2, enhancing the clamping effect and stability. The sliding cooperation between the slider 34 and the slide groove 36 ensures the smoothness and accuracy of the movement of the front clamping block 33. The thread adjustment of the second adjusting screw 32 can realize the precise control of the clamping force, which is convenient for installation and disassembly, thereby ensuring the reliability and flexibility of the connection between the rectangular support beam 2 and the adjusting component 4.

[0035] In this embodiment, the suspension assembly 1 includes a mounting block 11. A connecting hook 12 is fixedly connected to the middle of the outer side of the mounting block 11. A rotating shaft 13 is inserted and connected to one side of the top of the connecting hook 12. A suspension chain 14 is movably connected to the connecting hook 12 through the rotating shaft 13. A mounting base 15 is fixedly connected to the other end of the suspension chain 14. The mounting block 11 is fixedly connected to the middle of the outer side of the front plate 41 or the rear plate 441 respectively. The connecting hook 12 has an upwardly curved hook-shaped structure, and the bending angle of the connecting hook 12 is 90 degrees. The suspension chain 14 is rotatably connected to the connecting hook 12 through the rotating shaft 13, and the rotation angle range of the suspension chain 14 is 0-180 degrees.

[0036] With the above scheme: when the suspension assembly 1 is in operation, the mounting base 15 is fixed at the position to be suspended, one end of the suspension chain 14 is connected to the mounting base 15, and the other end is movably connected to the connecting hook 12 via the rotating shaft 13. The connecting hook 12 is fixedly connected to the outer middle of the front plate 41 or the rear plate 441 via the mounting block 11, thereby suspending the entire temporary support structure. The suspension chain 14 can rotate around the rotating shaft 13 within the range of 0-180 degrees to adapt to different suspension angles and installation requirements. The hook-shaped structure of the connecting hook 12, which is bent upward at 90 degrees, can ensure the stability of the connection with the suspension chain 14. This solution uses mounting blocks 11 to fix the outer center of the front plate 41 or the rear plate 441 respectively, ensuring the overall structural balance during suspension. The 90-degree bending angle design of the connecting hook 12 enhances the firmness of the connection with the suspension chain 14 and prevents it from falling off. The suspension chain 14 achieves a 0-180 degree rotational connection with the connecting hook 12 through the pivot 13, which greatly improves the flexibility of the suspension angle and can adapt to different installation environments and suspension requirements during factory renovation and expansion. This makes the suspension installation of the temporary support structure more convenient and stable, and also improves the adaptability of the entire support structure under different working conditions.

[0037] It should be noted that this utility model is an adjustable connector for a temporary support structure used in factory renovation and expansion. When in operation, the adjustable connector first suspends and fixes the entire structure in a suitable position via four suspension components 1. The mounting base 15 of the suspension component 1 is fixed, and the suspension chain 14 rotates with the connecting hook 12 via a rotating shaft 13 to adapt to different suspension angles. The connecting hook 12 is fixed on the front and rear sides of the adjusting component 4. Two rectangular support beams 2 are connected to the adjusting component 4 via four fixing components 3. In the fixing components 3, rotating the second screw block 31 drives the second adjusting screw 32 to rotate, causing the front clamping block 33 to move back and forth under the sliding cooperation of the slider 34 and the sliding groove 36, cooperating with the rear clamping plate 37 to clamp and fix the rectangular support beams 2. The rear connecting shaft 38... To ensure the stability of the rear clamping plate 37, the adjusting component 4 enables length adjustment. The I-shaped insert 42 at the rear end of the front plate 41 is inserted into the I-shaped groove 443 at the front end of the rear plate 441. When adjustment is needed, the first screw block 444 is rotated to drive the first adjusting screw 445 to rotate, causing the limiting block 446 to move up and down in the limiting groove 449. The blocking block 447 moves in the movable groove 442. When the blocking block 447 disengages from the pressure groove 43 on the surface of the I-shaped insert 42, it can push the front plate 41 and the rear plate 441 to move relative to each other to adjust the overall length. After adjustment, the first screw block 444 is rotated in the opposite direction to make the blocking block 447 snap into the corresponding pressure groove 43 to achieve position locking. The support block 448 provides support for the first adjusting screw 445, thereby achieving an adjustable connection of the temporary support structure through the cooperation of various components.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable connector for a temporary support structure used in the renovation and expansion of a factory building, comprising a rectangular support beam (2), characterized in that: Two rectangular support beams (2) are provided. Fixing components (3) are sleeved on the outer sides of the two rectangular support beams (2). Four fixing components (3) are provided. An adjusting component (4) is fixedly connected to the upper end of the fixing component (3). Two adjusting components (4) are provided. Suspension components (1) are fixedly connected to the front and rear sides of the two adjusting components (4). Four suspension components (1) are provided.

2. The adjustable connector for temporary support structure used in factory renovation and expansion according to claim 1, characterized in that: The adjustment component (4) includes a front plate (41), and an I-shaped plug (42) is fixedly connected to the rear end of the front plate (41). The surface of the I-shaped plug (42) has multiple pressure grooves (43), and a docking component (44) is sleeved on the outer side of the I-shaped plug (42).

3. The adjustable connector for temporary support structure used in factory renovation and expansion according to claim 2, characterized in that: The docking component (44) includes a rear plate (441), with an I-shaped groove (443) at the front end of the rear plate (441), a support block (448) fixedly connected to the front of the upper end of the rear plate (441), a movable groove (442) at the front of the upper end of the rear plate (441), and the movable groove (442) is located in front of the support block (448). A limit groove (449) is opened at the lower front end of the support block (448), a first adjusting screw (445) is threadedly connected to the middle of the upper end of the support block (448), a first screw block (444) is fixedly connected to the upper end of the first adjusting screw (445), and a limit block (446) is movably connected to the lower end of the first adjusting screw (445) through a bearing. A blocking block (447) is fixedly connected to the front of the lower end of the limit block (446).

4. The adjustable connector for temporary support structure used in factory renovation and expansion according to claim 1, characterized in that: The fixing component (3) includes a second screw block (31) and a connecting frame (35). The rear end of the second screw block (31) is fixedly connected to a second adjusting screw (32). The rear end of the second adjusting screw (32) is movably connected to a front clamping block (33) via a bearing. The bottom of the front clamping block (33) is fixedly connected to a slider (34). The middle of the rear frame wall of the connecting frame (35) is fixedly connected to a rear connecting shaft (38). The front end of the rear connecting shaft (38) is fixedly connected to a rear clamping plate (37). The front part of the lower frame wall of the connecting frame (35) has a sliding groove (36). The second adjusting screw (32) is threadedly connected to the middle of the front end of the connecting frame (35). The connecting frame (35) is fixedly connected to the middle of the lower end of the front plate (41) or the rear plate (441).

5. The adjustable connector for temporary support structure used in factory renovation and expansion according to claim 1, characterized in that: The suspension assembly (1) includes a mounting block (11), a connecting hook (12) is fixedly connected to the middle of the outer side of the mounting block (11), a rotating shaft (13) is inserted through one side of the top of the connecting hook (12), the connecting hook (12) is movably connected to a suspension chain (14) through the rotating shaft (13), the other end of the suspension chain (14) is fixedly connected to a mounting base (15), and the mounting block (11) is fixedly connected to the middle of the outer side of the front plate (41) or the rear plate (441).

6. The adjustable connector for temporary support structure used in factory renovation and expansion according to claim 2, characterized in that: The pressure grooves (43) are arranged at equal intervals along the length of the I-shaped insert (42), and the position and size of the pressure grooves (43) correspond to the bottom of the blocking block (447). The front plate (41) and the docking component (44) are symmetrically distributed front and back, and the position and size of the I-shaped insert (42) correspond to the position and size of the I-shaped groove (443).

7. The adjustable connector for temporary support structure used in factory renovation and expansion according to claim 3, characterized in that: The rear plate (441) has the same external shape as the front plate (41), and both the rear plate (441) and the front plate (41) are long rectangular plate structures. The width of the movable groove (442) is adapted to the width of the blocking block (447), and the movable groove (442) is connected to the I-shaped groove (443). The rear side of the limiting block (446) is movably connected in the limiting groove (449).

8. The adjustable connector for temporary support structure used in factory renovation and expansion according to claim 4, characterized in that: The connecting frame (35) has a rectangular frame structure. The front clamping block (33) and the rear clamping plate (37) are distributed in opposite directions. The opposing surfaces of the front clamping block (33) and the rear clamping plate (37) are arc-shaped. The slider (34) is slidably connected in the groove (36).

9. The adjustable connector for temporary support structure used in factory renovation and expansion according to claim 5, characterized in that: The connecting hook (12) has an upwardly curved hook-shaped structure and the bending angle of the connecting hook (12) is 90 degrees. The suspension chain (14) is rotatably connected to the connecting hook (12) through the rotating shaft (13) and the rotation angle range of the suspension chain (14) is 0-180 degrees.

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