An adjustable movable lifting point for a large-span arched corrugated steel plate

Abstract

This invention belongs to the field of connection node technology, and specifically relates to an adjustable movable lifting point for a large-span arched corrugated steel plate, comprising two sets of crossbeams; the bottom of each of the two sets of crossbeams is fixedly connected to several sets of beam columns, so that the two sets of crossbeams are in the same horizontal suspended state; the top of each of the two sets of crossbeams is engaged with a crossbeam holder, and the top of the crossbeam holder is fixedly connected to a steel plate assembly. During the sliding process of the other end of the reinforcing beam at the connection with the receiving beam assembly, the reinforcing beam can rotate around the second pivot pin, which is used to switch the steel plate assembly, the receiving beam assembly, and the reinforcing beam to a state resistant to lateral bending deformation during the hoisting process. In this process, the traction assembly can also be used to traction and position the connection between the receiving beam assembly and the reinforcing beam, increasing the stability of the included angle position of the connection between the receiving beam assembly and the reinforcing beam during the hoisting process, and improving the resistance of the steel plate to environmental influences after hoisting.

Description

Technical Field

[0001] This invention belongs to the field of connection node technology, and specifically relates to an adjustable movable lifting point for a large-span arched corrugated steel plate. Background Technology

[0002] In the construction of traditional large-span arched steel structures, especially in the installation of corrugated steel plates, problems such as difficulty in fixing lifting points and adjusting posture are often encountered. Existing hoisting methods mostly use fixed lifting points, which makes it difficult to make flexible posture adjustments and precise positioning of the steel plates during the hoisting process. This is not only inefficient, but also prone to component deformation or connection misalignment, affecting construction quality and safety.

[0003] According to the prior art, Chinese patent publication number CN212896841U, with an authorization announcement date of 2021, is available. 04 06 discloses a connection node between prefabricated building exterior wall panels and steel structures, belonging to the technical field of connection nodes. This connection node includes an exterior wall panel, with multiple secondary keels and two main keels installed inside the exterior wall panel. The multiple secondary keels are evenly fixed between the two main keels. Two sets of lifting point sleeve mechanisms are installed at one end of the two main keels, and both sets of lifting point sleeve mechanisms are located above one of the secondary keels. Limiting nodes and load-bearing nodes are installed inside the exterior wall panel, with two sets of each. The limiting nodes are located above the load-bearing nodes. This can reduce the number of welding points at the connection node between the building exterior wall panel and the steel structure, shorten the construction time, improve the construction quality and efficiency, and also have high durability.

[0004] However, the equipment still has the following drawbacks: although it can improve construction quality and efficiency and has relatively high durability, it cannot change the position of the movable lifting point according to the needs of the lifting environment, which makes it susceptible to the influence of strong winds at high altitudes after lifting, which can change the structural characteristics of the steel plate and increase the risk of deformation. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an adjustable movable suspension point for a large-span arched corrugated steel plate, comprising two sets of crossbeams. Several sets of beam columns are fixedly connected to the bottom of each set of crossbeams, ensuring the two sets of crossbeams are suspended at the same horizontal level. A crossbeam holder is engaged at the top of each set of crossbeams, and a steel plate assembly is fixedly connected to the top of the crossbeam holder. A first axle pin is rotatably connected to the outer wall of the steel plate assembly near its end. A receiving beam assembly is fixedly connected to the first axle pin. A second axle pin is rotatably connected to the outer wall of the steel plate assembly near its central axis. A reinforcing beam is fixedly connected to the second axle pin, and the other end of the reinforcing beam is slidably connected to the outer wall of the receiving beam assembly. A traction assembly is movably engaged at the top of the steel plate assembly, and the traction assembly pulls and stretches the end of the receiving beam assembly away from the first axle pin.

[0006] Furthermore, the steel plate assembly includes an arched steel plate; the top of the arched steel plate is provided with three sets of arc-shaped arch grooves, and both sides of the bottom of the arched steel plate are fixedly connected to the crossbeam bracket.

[0007] Furthermore, two sets of first internal threaded holes are provided at the top of the arched steel plate and away from the central axis, and the two sets of first internal threaded holes are symmetrically arranged with the central axis of the arched steel plate as the center. Two sets of second internal threaded holes are provided at the top of the arched steel plate and close to the central axis, and the two sets of second internal threaded holes are symmetrically arranged with the central axis of the arched steel plate as the center.

[0008] Furthermore, the storage beam assembly includes a storage beam; the storage beam has an arched structure, and one side wall of the storage beam is attached to the outer side wall of the arched steel plate. One end of the storage beam is provided with a positioning hole, and the positioning hole is fixedly connected to the end of the first shaft pin.

[0009] Furthermore, a mounting ear is fixedly connected to the top of the storage beam on the side away from the positioning hole, and a storage groove is provided on the outer wall of the storage beam on the side away from the arched steel plate.

[0010] Furthermore, a hollow sliding cavity is provided on the outer side wall of the storage beam, and the hollow sliding cavity is connected to the storage groove. The inner wall of the hollow sliding cavity is slidably connected to the end of the reinforcing beam away from the second shaft pin. A reserved groove is provided at the end of the storage beam and on the side near the mounting ear, and the reserved groove is movably sleeved on the second shaft pin.

[0011] Furthermore, the traction assembly includes an adjusting rod and a positioning housing; three sets of guide sleeves are slidably connected to the adjusting rod, and a fastening screw is threadedly connected to one side of the outer wall of the guide sleeve, with one end of the fastening screw abutting against the outer wall of the adjusting rod.

[0012] Furthermore, each of the three sets of guide sleeves has a lifting ring fixedly connected to its outer wall, and both ends of the adjusting rod are fixedly connected to a U-shaped adapter. The other end of the U-shaped adapter is fixedly connected to a limit rod, and the adjusting rod is horizontally fitted to the top of the mounting ear.

[0013] Furthermore, the limiting rod is horizontally connected through the through hole of the mounting ear, and traction columns are fixedly connected to both sides of the positioning housing. Elastic ropes are provided between the traction columns on both sides and one end of the limiting rod.

[0014] Furthermore, a bolt is connected through the center of the positioning housing, and one end of the bolt is threaded into the first internal thread hole or the second internal thread hole. Two sets of positioning grooves are provided at the bottom of the positioning housing, and both sets of positioning grooves are movably fitted and connected to the top protruding surface of the arched steel plate.

[0015] The beneficial effects of this invention are:

[0016] 1. The traction component is movable and latched at different positions on the top of the steel plate assembly to adjust the angle of rotation of the receiving beam assembly around the first pivot pin. During the rotation of the receiving beam assembly, the other end of the reinforcing beam can slide at the connection point with the receiving beam assembly, causing the reinforcing beam to rotate around the second pivot pin. This is used to switch the steel plate assembly, receiving beam assembly, and reinforcing beam to a state resistant to lateral bending deformation during hoisting. In this process, the traction component can also be used to traction and position the connection point between the receiving beam assembly and the reinforcing beam, increasing the stability of the angle position at the connection point between the receiving beam assembly and the reinforcing beam during hoisting, and improving the resistance of the steel plate to environmental influences after hoisting.

[0017] 2. After one end of the bolt is separated from the positioning housing, the positioning groove at the bottom of the positioning housing can be movably engaged with different positions on the top of the arched steel plate. When one end of the bolt is tightened into the second internal threaded hole, it is used to switch to the self-locking state of the receiving beam and the reinforcing beam, which facilitates the lifting of two adjacent sets of lifting rings by a crane. This is used to meet the lifting operation in outdoor low wind environment and save the lifting time of construction personnel.

[0018] 3. When one end of the bolt is fastened to the first internal threaded hole, it forms multiple sets of lifting rings on both sides of the adjusting rod into multi-position movable lifting points. After the position of the adjusted lifting ring is fastened by the fastening screws on each set of guide sleeves, it is convenient for the hook on the crane to pull and lift the lifting ring. At the same time, the adjusting rod can be used to pull the mounting ear upward simultaneously, so that the receiving beam rotates around the first shaft pin. When one end of the reinforcing beam rotates around the second shaft pin, the other end of the reinforcing beam is slidably connected to the inner wall of the hollow slide cavity until the other end of the reinforcing beam moves to the limit position on one side of the inner wall of the hollow slide cavity. Thus, the connection between the receiving beam, the reinforcing beam and the side wall of the arched steel plate is in a three-point stable state, which is used to resist the deformation of the side walls of the arched steel plate during the hoisting process in strong wind environment.

[0019] 4. After the crossbeam is horizontally engaged with the crossbeam at the bottom of the arched steel plate, the elastic ropes on both sides provide downward pressure on the receiving beam by adjusting the rod, so that one end of the reinforcing beam moves to the other side of the hollow sliding cavity, thereby moving the reinforcing beam into the receiving groove. The receiving beam is attached to the two side walls of the arched steel plate, so that the arched steel plate after hoisting is in an arched curved surface with automatic reinforcement and anti-bending characteristics.

[0020] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structure shown in the description, claims, and drawings. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This diagram illustrates the installation structure of the adjustable movable lifting points of the large-span arched corrugated steel plate according to an embodiment of the present invention.

[0023] Figure 2 This diagram illustrates the structure of the adjustable movable lifting point of the large-span arched steel corrugated plate according to an embodiment of the present invention. Figure 1 ;

[0024] Figure 3 This diagram illustrates the structure of the adjustable movable lifting point of the large-span arched steel corrugated plate according to an embodiment of the present invention. Figure 2 ;

[0025] Figure 4A schematic diagram showing the connection of the housing beam assembly, the reinforcing beam, and the traction assembly according to an embodiment of the present invention is shown;

[0026] Figure 5 A schematic diagram of the steel plate assembly according to an embodiment of the present invention is shown;

[0027] Figure 6 A schematic diagram of the structure of the storage beam assembly according to an embodiment of the present invention is shown;

[0028] Figure 7 A schematic diagram of the traction assembly according to an embodiment of the present invention is shown;

[0029] Figure 8 A schematic diagram of the positioning housing according to an embodiment of the present invention is shown.

[0030] In the diagram: 1. Beam-column; 2. Crossbeam; 3. Steel plate assembly; 31. Arched steel plate; 32. Arc-shaped arch groove; 33. First internal threaded hole; 34. Second internal threaded hole; 4. Crossbeam holder; 5. First axle pin; 6. Receiving beam assembly; 61. Receiving beam; 62. Positioning hole; 63. Mounting ear; 64. Receiving groove; 65. Hollow sliding cavity; 66. Reserved groove; 7. Second axle pin; 8. Reinforcing beam; 9. Traction assembly; 91. Adjusting rod; 92. Guide sleeve; 93. Lifting ring; 94. U-shaped adapter; 95. Limiting rod; 96. Positioning housing; 97. Traction column; 98. Bolt; 99. Positioning groove; 910. Elastic rope. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] This invention provides an adjustable movable suspension point for a large-span arched corrugated steel plate, comprising two sets of crossbeams 2; for example, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown.

[0033] Several sets of beam columns 1 are fixedly connected to the bottom of both sets of crossbeams 2, so that the two sets of crossbeams 2 are in the same horizontal suspended state. The top of both sets of crossbeams 2 is snapped with a crossbeam holder 4, and a steel plate assembly 3 is fixedly connected to the top of the crossbeam holder 4. A first shaft pin 5 is rotatably connected to the outer wall of the steel plate assembly 3 near the end. A storage beam assembly 6 is fixedly connected to the first shaft pin 5. A second shaft pin 7 is rotatably connected to the outer wall of the steel plate assembly 3 near the central axis. A reinforcing beam 8 is fixedly connected to the second shaft pin 7, and the other end of the reinforcing beam 8 is slidably connected to the outer wall of the storage beam assembly 6. A traction assembly 9 is movably snapped to the top of the steel plate assembly 3, and the traction assembly 9 pulls and stretches the end of the storage beam assembly 6 away from the first shaft pin 5.

[0034] Specifically, the traction component 9 is movably engaged at different positions on the top of the steel plate assembly 3 to adjust the angle of rotation of the receiving beam assembly 6 around the first pivot pin 5. During the rotation of the receiving beam assembly 6, the other end of the reinforcing beam 8 can slide at the connection point with the receiving beam assembly 6, causing the reinforcing beam 8 to rotate around the second pivot pin 7. This is used to switch the steel plate assembly 3, the receiving beam assembly 6, and the reinforcing beam 8 to a state resistant to lateral bending deformation during hoisting. In this process, the traction component 9 can also be used to traction and position the connection point between the receiving beam assembly 6 and the reinforcing beam 8, increasing the stability of the included angle position at the connection point between the receiving beam assembly 6 and the reinforcing beam 8 during hoisting.

[0035] The steel plate assembly 3 includes an arched steel plate 31; for example, such as Figure 5 As shown.

[0036] The top of the arched steel plate 31 is provided with three sets of arc-shaped arch grooves 32, and both sides of the bottom of the arched steel plate 31 are fixedly connected to the crossbeam bracket 4. The top of the arched steel plate 31 and away from the central axis are provided with two sets of first internal threaded holes 33. The two sets of first internal threaded holes 33 are symmetrically arranged with the central axis of the arched steel plate 31 as the center. The top of the arched steel plate 31 and close to the central axis are provided with two sets of second internal threaded holes 34. The two sets of second internal threaded holes 34 are symmetrically arranged with the central axis of the arched steel plate 31 as the center.

[0037] The storage beam assembly 6 includes a storage beam 61; for example, such as Figure 6 As shown.

[0038] The storage beam 61 has an arched structure, and one side wall of the storage beam 61 is attached to the outer side wall of the arched steel plate 31. One end of the storage beam 61 has a positioning hole 62, which is fixedly connected to the end of the first shaft pin 5. The top of the storage beam 61 and the side away from the positioning hole 62 are fixedly connected to a mounting ear 63. The outer wall of the storage beam 61 and the side away from the arched steel plate 31 have a storage groove 64. The outer wall of the storage beam 61 also has a hollow sliding cavity 65, which is connected to the storage groove 64. The inner wall of the hollow sliding cavity 65 is slidably connected to the end of the reinforcing beam 8 away from the second shaft pin 7. The end of the storage beam 61 and the side near the mounting ear 63 have a reserved groove 66, which is movably sleeved on the second shaft pin 7.

[0039] The traction assembly 9 includes an adjusting rod 91 and a positioning housing 96; for example, as shown below. Figure 7 and Figure 8 As shown.

[0040] Three sets of guide sleeves 92 are slidably connected to the adjusting rod 91. A fastening screw is threaded onto one side of the outer wall of each guide sleeve 92, and one end of the fastening screw abuts against the outer wall of the adjusting rod 91. A lifting ring 93 is fixedly connected to the outer wall of each of the three sets of guide sleeves 92. U-shaped adapters 94 are fixedly connected to both ends of the adjusting rod 91, and a limit rod 95 is fixedly connected to the other end of each U-shaped adapter 94. The adjusting rod 91 is horizontally fitted to the top of the mounting ear 63, and the limit rod 95 horizontally penetrates through it. Inside the through hole of the mounting ear 63, traction columns 97 are fixedly connected to both sides of the positioning housing 96. Elastic ropes 910 are provided between the traction columns 97 on both sides and one end of the limiting rod 95. A bolt 98 is connected through the center of the positioning housing 96, and one end of the bolt 98 is threaded into the first internal thread hole 33 or the second internal thread hole 34. Two sets of positioning grooves 99 are opened at the bottom of the positioning housing 96, and both sets of positioning grooves 99 are movably fitted to the top protruding surface of the arched steel plate 31.

[0041] Specifically, after one end of the bolt 98 is separated from the positioning housing 96, it is convenient to movably engage the positioning groove 99 at the bottom of the positioning housing 96 with different positions on the top of the arched steel plate 31. When one end of the bolt 98 is fastened to the second internal thread hole 34, it is used to switch to the self-locking state of the receiving beam 61 and the reinforcing beam 8, which is convenient to use a crane to pull and lift the two sets of adjacent lifting rings 93, so as to meet the lifting operation in the outdoor weak wind environment and save the lifting time of the construction personnel.

[0042] When one end of the bolt 98 is fastened to the first internal threaded hole 33, it is used to form multiple sets of lifting rings 93 on the two side adjusting rods 91 into multi-position movable lifting points. After the position of the adjusted lifting rings 93 is fastened by the fastening screws on each set of guide sleeves 92, it is convenient for the hook on the crane to pull and lift the lifting rings 93. At the same time, the adjusting rods 91 can be used to pull the mounting ears 63 upward simultaneously, so that the receiving beam 61 rotates around the first shaft pin 5. When one end of the reinforcing beam 8 rotates around the second shaft pin 7, the other end of the reinforcing beam 8 is slidably connected to the inner wall of the hollow slide cavity 65 until the other end of the reinforcing beam 8 moves to the limit position on one side of the inner wall of the hollow slide cavity 65. Thus, the connection between the receiving beam 61, the reinforcing beam 8 and the side wall of the arched steel plate 31 is in a three-point stable state, which is used to resist the deformation of the side walls of the arched steel plate 31 during the hoisting process in a strong wind environment.

[0043] After the crossbeam bracket 4 at the bottom of the arched steel plate 31 is horizontally engaged with the crossbeam 2, the elastic ropes 910 on both sides provide downward pressure on the receiving beam 61 by restoring and rebounding, so that one end of the reinforcing beam 8 moves towards the other side of the hollow sliding cavity 65, and is used to move the reinforcing beam 8 into the receiving groove 64. The receiving beam 61 is attached to the two side walls of the arched steel plate 31, so that the arched steel plate 31 after hoisting is in the arched curved surface with automatic reinforcement and anti-bending characteristics.

[0044] The working principle of an adjustable movable lifting point for a large-span arched corrugated steel plate proposed in this invention is as follows:

[0045] After one end of the bolt 98 is separated from the positioning housing 96, the positioning groove 99 at the bottom of the positioning housing 96 can be movably engaged with different positions on the top of the arched steel plate 31. When one end of the bolt 98 is fastened to the second internal threaded hole 34, it is used to switch to the self-locking state of the receiving beam 61 and the reinforcing beam 8, which facilitates the lifting of two adjacent sets of lifting rings 93 by a crane, in order to meet the lifting operation in the outdoor weak wind environment and save the lifting time of the construction personnel.

[0046] When one end of the bolt 98 is fastened to the first internal threaded hole 33, it is used to form multiple sets of lifting rings 93 on the two sides of the adjusting rod 91 into multi-position movable lifting points. After the position of the adjusted lifting ring 93 is fastened by the fastening screw on each set of guide sleeve 92, it is convenient for the hook on the crane to pull and lift the lifting ring 93. At the same time, the adjusting rod 91 can be used to pull the mounting ear 63 upward simultaneously, so that the receiving beam 61 rotates around the first shaft pin 5. When one end of the reinforcing beam 8 rotates around the second shaft pin 7, the other end of the reinforcing beam 8 is slidably connected to the inner wall of the hollow slide cavity 65 until the other end of the reinforcing beam 8 moves to the limit position on one side of the inner wall of the hollow slide cavity 65. Thus, the connection between the receiving beam 61, the reinforcing beam 8 and the side wall of the arched steel plate 31 is in a three-point stable state, which is used to resist the deformation of the side walls of the arched steel plate 31 during the hoisting process in a strong wind environment.

[0047] After the crossbeam bracket 4 at the bottom of the arched steel plate 31 is horizontally engaged with the crossbeam 2, the elastic ropes 910 on both sides provide downward pressure on the adjusting rod 91 to the receiving beam 61, causing one end of the reinforcing beam 8 to move towards the other side of the hollow sliding cavity 65, so as to move the reinforcing beam 8 into the receiving groove 64. The receiving beam 61 is attached to the two side walls of the arched steel plate 31, so that the arched steel plate 31 after hoisting is in the arched curved surface with automatic reinforcement and anti-bending characteristics.

[0048] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A large span arched steel corrugated steel plate adjustable movable lifting point, characterized in that: It includes two sets of crossbeams (2); the bottom of each set of crossbeams (2) is fixedly connected to several sets of beam columns (1), so that the two sets of crossbeams (2) are in the same horizontal suspended state. The top of each set of crossbeams (2) is clamped with a crossbeam holder (4), and the top of the crossbeam holder (4) is fixedly connected with a steel plate assembly (3). The outer wall of the steel plate assembly (3) and the side near the end are rotatably connected to a first shaft pin (5). The first shaft pin (5) is fixedly connected to a storage beam assembly (6). The outer wall of the steel plate assembly (3) and the position near the central axis are rotatably connected to a second shaft pin (7). The second shaft pin (7) is fixedly connected to a reinforcing beam (8), and the other end of the reinforcing beam (8) is slidably connected to the outer wall of the storage beam assembly (6). The top of the steel plate assembly (3) is movably clamped with a traction assembly (9), and the traction assembly (9) pulls and stretches the end of the storage beam assembly (6) away from the first shaft pin (5).

2. The large span arched steel corrugated steel plate adjustable moving lifting point according to claim 1, characterized in that: The steel plate assembly (3) includes an arched steel plate (31); the top of the arched steel plate (31) is provided with three sets of arc-shaped arch grooves (32), and the bottom sides of the arched steel plate (31) are fixedly connected to the crossbeam bracket (4).

3. The large span arched steel corrugated steel plate adjustable moving lifting point according to claim 2, characterized in that: Two sets of first internal threaded holes (33) are provided at the top of the arched steel plate (31) and away from the central axis. The two sets of first internal threaded holes (33) are symmetrically arranged with the central axis of the arched steel plate (31) as the center. Two sets of second internal threaded holes (34) are provided at the top of the arched steel plate (31) and close to the central axis. The two sets of second internal threaded holes (34) are symmetrically arranged with the central axis of the arched steel plate (31) as the center.

4. The large span arched steel corrugated steel plate adjustable moving lifting point according to claim 2, characterized in that: The storage beam assembly (6) includes a storage beam (61); the storage beam (61) is an arched structure, and one side wall of the storage beam (61) is attached to the outer side wall of the arched steel plate (31). One end of the storage beam (61) is provided with a positioning hole (62), and the positioning hole (62) is fixedly connected to the end of the first shaft pin (5).

5. The large span arched steel corrugated steel plate adjustable moving lifting point according to claim 4, characterized in that: The top of the storage beam (61) and the side away from the positioning hole (62) are fixedly connected to the mounting ear (63), and the outer wall of the storage beam (61) and the side away from the arched steel plate (31) are provided with a storage groove (64).

6. The large span arched steel corrugated steel plate adjustable moving lifting point according to claim 5, characterized in that: A hollow sliding cavity (65) is also provided on the outer side wall of the receiving beam (61), and the hollow sliding cavity (65) is connected to the receiving groove (64). The inner wall of the hollow sliding cavity (65) is slidably connected to the end of the reinforcing beam (8) away from the second shaft pin (7). A reserved groove (66) is provided at the end of the receiving beam (61) and on the side near the mounting ear (63), and the reserved groove (66) is movably sleeved on the second shaft pin (7).

7. The adjustable movable lifting point of the large-span arched corrugated steel plate according to claim 5, characterized in that: The traction assembly (9) includes an adjusting rod (91) and a positioning housing (96); three sets of guide sleeves (92) are slidably connected on the adjusting rod (91), and a fastening screw is threaded on one side of the outer wall of the guide sleeve (92), and one end of the fastening screw is abutted against the outer wall of the adjusting rod (91).

8. The adjustable movable lifting point of the large-span arched corrugated steel plate according to claim 7, characterized in that: The outer walls of the three sets of guide sleeves (92) are all fixedly connected with lifting rings (93), and both ends of the adjusting rod (91) are fixedly connected with U-shaped adapters (94). The other end of the U-shaped adapters (94) is fixedly connected with a limit rod (95). The adjusting rod (91) is horizontally attached to the top of the mounting ear (63).

9. The adjustable movable lifting point of the large-span arched corrugated steel plate according to claim 8, characterized in that: The limiting rod (95) is horizontally connected through the through hole of the mounting ear (63). Both sides of the positioning housing (96) are fixedly connected with traction columns (97). Elastic ropes (910) are provided between the traction columns (97) on both sides and one end of the limiting rod (95).

10. The adjustable movable lifting point of the large-span arched corrugated steel plate according to claim 9, characterized in that: A bolt (98) is connected through the center of the positioning housing (96), and one end of the bolt (98) is threaded into the first internal thread hole (33) or the second internal thread hole (34). Two sets of positioning grooves (99) are provided at the bottom of the positioning housing (96), and both sets of positioning grooves (99) are movably fitted to the top protruding surface of the arched steel plate (31).

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