CN204400427U - The detachable shearing resistance hanger of a kind of truss lifting - Google Patents

Abstract

The utility model relates to a detachable shear-resistant lifting lug for hoisting a truss, which comprises a shear-resistant reinforcing rib and a lifting lug connecting plate. Both ends of the bottom edge of the reinforcing rib extend downward to form a bend, one end of the bend is connected with a fixing device, and the lower end of the lug connecting plate is provided with an opening matched with the fixing device. The detachable anti-shear lugs provided by the utility model for the hoisting of double-shaped steel section trusses fully meet the requirements of hoisting and turning over large-scale steel structure trusses, and can play a good role in anti-shearing. At the same time, by installing a fixing device, the The lifting lugs do not need to be welded to the suspended truss, and can be used multiple times. The installation and disassembly are convenient and fast, which not only saves cost and time, but also avoids the risk of removing hooks and lifting lugs at high altitudes, and significantly improves the lifting efficiency of double-shaped steel section trusses. quality as well as safety.

Description

Detachable shear lug for truss hoisting

technical field

The utility model relates to a detachable shear-resistant lug for hoisting a truss, in particular to a detachable shear-resistant lug for hoisting a double-shaped steel section truss, and belongs to the technical field of steel structure hoisting.

Background technique

Since the introduction of light steel buildings in coastal areas in our country in the 1980s, the application of steel structures has developed rapidly in the past 30 years, especially the widespread application of light steel structures and truss structures in large-span single-storey buildings, and more and more large-scale hoisting of such structures , the requirements for the lug structure are becoming more and more stringent, and the forms are becoming more and more complex and diverse. All steel structure hoisting companies are facing various problems. In order to actively cope with the challenges of hoisting large truss structures, they must continuously improve the ability of hoisting tools and tools for technological innovation in order to meet the needs of future development of steel structure hoisting.

The shear lugs for large truss hoisting (hereinafter referred to as shear lugs) are used for hoisting and turning over large truss structures. Generally, the lifting lugs are directly welded on the steel truss, which increases the workload of welding and cutting before and after on-site hoisting, and increases the operation risk.

Utility model content

The technical problem to be solved by the utility model is to provide a detachable shear lug that is reasonable in structure, convenient in installation, and can be used when double-shaped steel section trusses are hoisted and turned over, aiming at the defects of the prior art.

The utility model solves the technical problem through the following technical solutions, a detachable shear lug for truss hoisting, including a shear reinforcement rib and a lug connection plate, the bottom edge of the shear reinforcement rib and the side edge of the suspension lug connection plate are mutually Vertical and clamped; the two ends of the bottom edge of the shear reinforcement rib extend downward to form a bend, one end is bent and connected with a fixing device, and the lower end of the lug connecting plate is provided with an opening matching the fixing device

Further, the aforementioned detachable shear lugs for hoisting the truss, the fixing device includes a cable chain, one end of the cable chain is fixedly connected to the bend, the other end is connected to the shear pin, and the lower end of the shear pin is pierced with a cotter pin. And the shear pin shaft passes through the opening at the lower end of the lug connecting plate and is fixed by the cotter pin at the end of the shear pin shaft. Through this structure, the shear pin can freely pass through the opening on the connecting plate of the lifting lug to fix the suspended truss and play the role of hoisting. At the same time, the cotter pin is arranged on the shear pin shaft, which can effectively ensure that the shear pin shaft will not slip out of the lug connecting plate during hoisting and cause accidents.

Further, in the aforementioned detachable shear lugs for hoisting the truss, the shear reinforcing rib is an isosceles triangle, and the length of the base of the isosceles triangle is greater than the length of the two waists. Through this structure, the stress of the shear stiffener can be made more uniform, which is more conducive to ensuring the balance of the truss during hoisting.

Further, in the aforementioned detachable shear lugs for truss hoisting, a circular lifting hole is provided in the center of the shear reinforcing rib. Through the circular hoisting hole, the shackle can be connected with the sling to hoist the truss.

The beneficial effect of the utility model is that: the detachable anti-shear lugs for the hoisting of the double-shaped steel cross-section truss provided by the utility model fully meet the requirements of the hoisting and turning over of the large-scale steel structure truss, and can well play the role of anti-shearing. The shear stiffener in the utility model can resist the lateral shear force generated on the lug connecting plate during hoisting, ensuring that the lifting lug connecting plate passes through the upper chord of the hoisted truss without obstacles, and connects the shear stiffener and the shear pin. The weight of the suspended truss acts directly on the shear pin.

At the same time, by installing the fixing device, the lifting lug does not need to be welded to the suspended truss, and can be used multiple times. The installation and disassembly are convenient and fast, which not only saves cost and time, but also avoids the risk of removing the hook and removing the lifting lug at high altitude. Significantly improve the quality and safety of double steel section truss hoisting.

The utility model has the advantages of simple structure and convenient use, is suitable for batch production, and can meet the market demand for carrying out this work.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the layout of the utility model installed on a double-shaped steel section truss.

Detailed ways

The structure of this embodiment is shown in Figure 1. It is a detachable shear lug for hoisting a truss. Shear pin shaft 3, cable chain 4 and cotter pin 5. Among them, the shear stiffener and the lug connecting plate are made of 30mm and 18mm steel plates respectively, the bottom edge of the shear stiffening rib is engaged with the side of the lifting lug connecting plate, and the bottom edge of the shear stiffening rib is in contact with the hanging lug connecting plate. The sides of the ear connection plates are perpendicular to each other, and the two are welded together through full penetration; the shear reinforcement rib is an isosceles triangle, and the length of the base of the isosceles triangle is greater than the length of the two waists. Both ends of the bottom edge extend downward to form a bend, and one side of the bend is connected with a fixing device, and the fixing device is matched with the opening at the lower end of the lifting lug connecting plate.

The fixing device includes a cable chain, one end of the cable chain is fixedly connected to the bend, and the other end is connected to the shear pin. The shear pin is Φ40mm round steel, and the shear pin passes through the opening at the lower end of the lug connecting plate and is fixed by the cotter pin at the end of the shear pin; the cotter pin is a Φ6mm round bar, and the cotter pin is inserted into the shear pin The hole opened on the end can ensure that the shear pin will not slip out of the lug connecting plate during hoisting.

When the utility model is used, the shear stiffener and the lug connecting plate are firstly welded and fixed, and the bends on both sides of the shear stiffener are clamped to the sides of the hoisted truss, and installed through the lifting hole in the center of the shear stiffener. Shackle 6: After the lifting lug connecting plate passes through the upper chord gap of the truss, pass the shear pin shaft through the opening of the lifting lug connecting plate and clamp it at the upper chord of the truss, then install the cotter pin, and the lifting lug is installed.

After the hoisting is completed, the construction personnel only need to remove the cotter pin, and the shear pin shaft is withdrawn to complete the disassembly.

During hoisting, the shear stiffener bears the lateral shear force generated by the hoisting, the shear pin bearing bears all the gravity of the hoisted steel member, the cotter pin prevents the shear pin from sliding sideways, and the cable chain ensures that the shear pin is in contact with the shear pin. The lug is a whole.

In addition to the above embodiments, the utility model can also have other implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model.

Claims (5)

1. truss lifting is with a detachable shearing resistance hanger, it is characterized in that: comprise shearing resistance strengthening rib and hanger connecting panel, and the base of described shearing resistance strengthening rib and the side of hanger connecting panel be vertical also clamping mutually; The two ends, base of described shearing resistance strengthening rib extend to form bending downwards, and one end bending is connected with anchor fitting, and the lower end of described hanger connecting panel is provided with the perforate supporting with described anchor fitting.

2. truss lifting according to claim 1 is with detachable shearing resistance hanger, and it is characterized in that: described anchor fitting comprises rope chain, one end and the bending of described rope chain are connected, and the other end connects shearing resistance bearing pin, and the lower end of described shearing resistance bearing pin wears spring cotter.

3. the detachable shearing resistance hanger of truss lifting according to claim 2, is characterized in that: described shearing resistance bearing pin is passed the perforate of hanger connecting panel lower end and fixed by described spring cotter.

4. the detachable shearing resistance hanger of truss lifting according to claim 1, it is characterized in that: described shearing resistance strengthening rib is equicrural triangle, the base length of described equicrural triangle is greater than the length of two waists.

5. truss lifting according to claim 1 is with detachable shearing resistance hanger, it is characterized in that: the center of described shearing resistance strengthening rib is provided with circular lifting hole(eyelet).