A tool for hoisting steel roof trusses

Abstract

A tool for hoisting steel roof trusses, belonging to the technical field of construction tools, includes a top plate. A lifting lug is fixedly installed at the center of the upper surface of the top plate, and a lifting ring is rotatably installed inside the lifting lug. Removable side plates are provided at both ends of the top plate. Two pin plates are detachably installed between the two side plates, and two bolt and nut assemblies are detachably installed between the two pin plates. The two bolt and nut assemblies are located on the outer side of the side plates. This tool ensures the safety of hoisting operations while avoiding friction between the tool and the steel roof truss, preventing damage to the outer surface coating of the steel roof truss. It also allows for flexible adjustment of the installation components according to steel roof trusses of different widths, adapting to different usage scenarios and improving the tool's versatility.

Description

Technical Field

[0001] This utility model relates to the field of construction tools, specifically to a tool for hoisting steel roof trusses. Background Technology

[0002] In the field of steel structure construction and hoisting, traditional methods use steel wire ropes (rope knots) to bind components for hoisting, requiring steel pipes or sheet metal as pads during binding. This method has the following significant drawbacks:

[0003] 1. Significant safety hazards: Wire ropes (rope buckles) cannot be reused in different projects, and are prone to breakage due to wear, compression and other reasons during use, threatening construction safety.

[0004] 2. Insufficient protection of components: During the binding process, the wire rope comes into direct contact with components such as steel beams, which can easily cause the fireproof coating and paint on the surface of the steel components to be scratched and damaged, affecting the durability and aesthetics of the structure.

[0005] To address these technical issues, we are providing tools for hoisting steel roof trusses. Utility Model Content

[0006] The purpose of this utility model is to provide a tool for hoisting steel roof trusses to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a tool for hoisting steel roof trusses, including a top plate, a lifting lug fixedly installed at the center of the upper surface of the top plate, a lifting ring rotatably installed inside the lifting lug, detachable side plates provided at both ends of the top plate, two pin plates detachably installed between the two side plates, and two bolt and nut assemblies detachably installed between the two pin plates, with the two bolt and nut assemblies located on the outer side of the side plates.

[0008] Preferably, multiple blocks are fixedly installed at equal intervals on both the left and right sides of the upper surface of the top plate, and a slot is formed between two adjacent blocks. A sleeve is opened through the upper end of the side plate, and the sleeve is snapped into the corresponding slot.

[0009] Preferably, an L-shaped fastening plate is installed between the sleeve and the top plate, and the top end of the fastening plate is snapped between the lower surface of the sleeve and the top plate.

[0010] Preferably, the outer surfaces of the fastening plate and the side plate are symmetrically provided with two pin holes, the pin plate is inserted and installed between the two corresponding pin holes on the left and right, and a bolt and nut assembly is installed between the two pin plates.

[0011] Preferably, multiple adjustment holes are equidistantly provided on the outer surfaces of both sides of the pin plate, and lugs with openings are fixedly installed on the opposing surfaces of the two fastening plates, with the bolt and nut assembly passing through the corresponding adjustment holes and the openings of the lugs.

[0012] Preferably, at least four stiffening plates are fixedly installed between the outer surface of the lifting lug and the upper surface of the top plate, and the stiffening plates are triangular in shape.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model can replace the traditional steel wire rope in contact with the steel roof truss, which can avoid the safety hazards of steel wire rope being easily damaged and broken when in direct contact with the steel roof truss. At the same time, the lifting ring can adapt to the changes in tension in different directions, reduce the risk of damage to the connecting parts due to stress concentration, and ensure the safety of lifting operations.

[0015] 2. During the lifting process, this tool can make the side plate fit against the side surface of the steel roof truss, the lower surface of the top plate fit against the upper surface of the steel roof truss, and the upper surface of the pin plate fit against the lower surface of the steel roof truss, thus avoiding friction between the tool and the steel roof truss and preventing damage to the outer surface coating of the steel roof truss.

[0016] 3. This tool, through the adjustment holes on the outer surfaces of the left and right sides of the pin plate and the slot design between the side plate and the top plate, allows the tool to flexibly adjust the installation components according to steel roof trusses of different widths, adapting to different steel roof truss usage scenarios and improving the tool's versatility. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention.

[0018] Figure 2 This is a schematic diagram of the exploded structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the main structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the right-side structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of this utility model in use.

[0022] In the diagram: 1. Top plate; 11. Stop block; 12. Slot; 2. Lifting lug; 21. Stiffening plate; 3. Lifting ring; 4. Side plate; 41. Sleeve opening; 5. Fastening plate; 51. Ear block; 6. Pin hole; 7. Pin plate; 71. Adjustment hole; 8. Bolt and nut assembly. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This utility model provides a technical solution:

[0025] A tool for hoisting steel roof trusses includes a top plate 1. A lifting lug 2 is welded and fixedly installed at the center of the upper surface of the top plate 1. The lifting lug 2 has a thickness of at least 30 mm. A lifting ring 3 is rotatably installed inside the lifting lug 2 via a pin. The lifting ring 3 is used to connect an external steel wire rope to assist in hoisting. The lifting ring 3 can adapt to changes in tension in different directions, avoiding stress concentration at the connection point due to a fixed tension direction, and effectively reducing the risk of damage to the connection components. Removable side plates 4 are provided at both ends of the top plate 1. The side plates 4 have a thickness of at least 24 mm. Two pin plates 7 with a thickness of at least 8 mm are detachably installed between the two side plates 4. Two bolt and nut assemblies 8 are detachably installed between the two pin plates 7. The two bolt and nut assemblies 8 are located on the outside of the side plates 4.

[0026] During welding, the height of the weld between each component shall not be less than 0.7 times the thickness of the original component. After welding is completed, the weld shall be inspected to ensure that there are no cracks, slag inclusions, or undercut. If any welding defects are found, they shall be dealt with in a timely manner to ensure that the welding quality is up to standard.

[0027] When using, such as Figure 5 As shown, four top plates 1 can be symmetrically arranged in a rectangle on the upper surface of the steel roof truss, with the side plates 4 on each top plate 1 located on both sides of the steel roof truss. Then, multiple pin plates 7 are sequentially installed between the corresponding two side plates 4. Finally, the left and right ends of the two corresponding side plates 4 are locked and fixed using bolt and nut assemblies 8. Then, external steel wire ropes are fixedly connected between two adjacent lifting rings 3. The two external steel wire ropes are lifted using the hooks of the external lifting equipment, and the steel roof truss can be supported by the pin plates 7. During the entire lifting process, the side plates 4 are in contact with the side surface of the steel roof truss, the lower surface of the top plate 1 is in contact with the upper surface of the steel roof truss, and the upper surface of the pin plates 7 is in contact with the lower surface of the steel roof truss. This ensures the stability of the tool and the steel roof truss after installation, avoids friction between the tool and the steel roof truss during hoisting, and avoids damage to the outer surface coating of the steel roof truss.

[0028] The tool adopts a modular installation. Compared with integrated tools and existing methods of hoisting using steel wire ropes, if a part is damaged due to wear, collision, or other reasons during use, only the damaged part needs to be disassembled and replaced with a new one, without replacing the entire tool. This greatly reduces usage costs and maintenance time. At the same time, through its reasonable structural design, this tool avoids the situation where the steel wire rope is in direct contact with the steel roof truss and is prone to breakage, thus improving the safety and reliability of hoisting operations.

[0029] Combination Figure 1 and Figure 2 As shown, multiple stops 11 are welded and fixed at equal intervals on both the left and right sides of the upper surface of the top plate 1. A slot 12 is formed between two adjacent stops 11. A sleeve 41 is provided through the upper end of the side plate 4. The side plate 4 is connected to the top plate 1 by snapping the sleeve 41 into the corresponding slot 12. When disassembling, the side plate 4 is lifted up and moved outward using the sleeve 41 to separate it from the top plate 1. When installing, the operation is reversed.

[0030] Combination Figure 1 and Figure 2 As shown, after the side plate 4 is connected to the top plate 1, in order to strengthen the connection between the two, an L-shaped fastening plate 5 is installed between the sleeve 41 and the top plate 1. The top end of the fastening plate 5 is snapped between the sleeve 41 and the lower surface of the top plate 1, which can fill the gap of the sleeve 41, thereby firmly snapping the top end of the side plate 4 into the slot 12, ensuring the stability of the side plate 4 after installation.

[0031] Combination Figure 1 and Figure 2 As shown, two pin holes 6 are symmetrically opened on the outer surfaces of the fastening plate 5 and the side plate 4. The pin plate 7 is inserted and installed between the two corresponding pin holes 6 on the left and right sides, and a bolt and nut assembly 8 (a combination of bolts and nuts, a common fixing method in the field) is installed between the two pin plates 7. The pin plate 7 achieves a detachable connection with the side plate 4 and the fastening plate 5 by cooperating with the pin holes 6.

[0032] In addition, to ensure the stability of the fastening plate 5 after installation and to prevent its top from moving outward and dislodging from the sleeve 41, while also enabling the tool to be used with steel roof trusses of different widths, multiple adjustment holes 71 are equidistantly opened on the outer surfaces of both sides of the pin plate 7, and ear blocks 51 with through holes are fixedly installed on the opposing surfaces of the two fastening plates 5. During installation, the bolt and nut assembly 8 is passed through the corresponding adjustment holes 71 and through holes of the ear blocks 51. The fastening plate 5 can be fixed by cooperating with the ear blocks 51 to prevent it from moving outward and dislodging from the sleeve 41.

[0033] Furthermore, when dealing with wider steel roof trusses, the top of the side plate 4 can be inserted into the corresponding slot 12 through the sleeve 41, depending on the width of the steel roof truss. Subsequently, other components are installed according to the previously described method, and the bolt and nut assembly 8 is passed through the corresponding adjustment hole 71 to fix the two pin plates 7. This design enhances the tool's adaptability to different steel roof truss usage scenarios.

[0034] Finally, to enhance the fixing effect between the lifting lug 2 and the top plate 1, at least four stiffening plates 21 need to be welded and fixed between the outer surface of the lifting lug 2 and the upper surface of the top plate 1. The stiffening plates 21 are triangular in shape.

Claims

1. A tool for hoisting steel roof trusses, comprising a top plate (1), characterized in that: A lifting lug (2) is fixedly installed at the center of the upper surface of the top plate (1). A lifting ring (3) is rotatably installed inside the lifting lug (2). A detachable side plate (4) is provided at both the left and right ends of the top plate (1). Two pin plates (7) are detachably installed between the two side plates (4). Two bolt and nut assemblies (8) are detachably installed between the two pin plates (7). The two bolt and nut assemblies (8) are located on the outside of the side plates (4).

2. The tool for hoisting steel roof trusses according to claim 1, characterized in that: Multiple blocks (11) are fixedly installed at equal intervals on both the left and right sides of the upper surface of the top plate (1). A slot (12) is formed between two adjacent blocks (11). A sleeve (41) is opened through the upper end of the side plate (4). The sleeve (41) is snapped into the corresponding slot (12).

3. The tool for hoisting steel roof trusses according to claim 2, characterized in that: An L-shaped fastening plate (5) is installed between the sleeve (41) and the top plate (1). The top end of the fastening plate (5) is snapped between the sleeve (41) and the lower surface of the top plate (1).

4. The tool for hoisting steel roof trusses according to claim 3, characterized in that: The outer surfaces of the fastening plate (5) and the side plate (4) are symmetrically provided with two pin holes (6). The pin plate (7) is inserted and installed between the two corresponding pin holes (6) on the left and right sides, and a bolt and nut assembly (8) is installed between the two pin plates (7).

5. The tool for hoisting steel roof trusses according to claim 4, characterized in that: Multiple adjustment holes (71) are equidistantly provided on the outer surfaces of both sides of the pin plate (7); On the opposing surfaces of the two fastening plates (5), lugs (51) with openings are fixedly installed, and the bolt and nut assembly (8) passes through the corresponding adjustment hole (71) and the opening of the lug (51).

6. The tool for hoisting steel roof trusses according to claim 1, characterized in that: At least four stiffening plates (21) are fixedly installed between the outer surface of the lug (2) and the upper surface of the top plate (1), and the stiffening plates (21) are triangular.

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