CN219585645U

CN219585645U - Arc rod type lifting appliance for lifting prefabricated pipe pieces

Info

Publication number: CN219585645U
Application number: CN202320613134.5U
Authority: CN
Inventors: 李扬; 陈锦; 马建峰; 李海; 耿小飞; 刘宗钦
Original assignee: Zhongyifeng Tunnel Engineering Co ltd
Current assignee: Zhongyifeng Tunnel Engineering Co ltd
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2023-08-25
Anticipated expiration: 2033-03-27

Abstract

The utility model discloses an arc rod type lifting appliance for lifting prefabricated pipe pieces, which is characterized by comprising lifting lugs and an arc rod, wherein one end of each lifting lug is provided with a lifting hole, the other end of each lifting lug is welded and fixed with one end of each arc rod, the other end of each arc rod is provided with external threads, each arc rod is sleeved with a gasket at the end and is in threaded connection with a nut, and the bending radius of the central line of each arc rod is the same as that of a bending bolt hole in the pipe piece; during hoisting, the arc-shaped rod penetrates through the bent bolt hole of the pipe piece, the lifting lug is located on one side of the pipe piece, which is not provided with an operation hole, the other end of the arc-shaped rod penetrates through the bent bolt hole and stretches into the operation hole, and the gasket and the nut are connected with the arc-shaped rod in the operation hole. The hanger disclosed by the utility model is convenient to use, and the safety of segment lifting is improved.

Description

Arc rod type lifting appliance for lifting prefabricated pipe pieces

Technical Field

The utility model belongs to the technical field of building construction, and particularly relates to an arc rod type lifting appliance for lifting prefabricated pipe pieces.

Background

With the development of society, domestic economy is rapidly developed, and urban development and exploration become hot spots for urban construction at present. Underground projects such as rail transit, comprehensive pipe galleries and the like are developed greatly in China, and accordingly engineering technology breaks through rapidly, a large number of prefabricated components are applied to engineering construction, particularly tunnel engineering, the degree of mechanization is high, and the prefabricated concrete segments are assembled by shield tunneling machine tunneling widely. In the field of open caisson construction in recent years, prefabricated components are also used, so that the construction period can be shortened, and the material waste in the field manufacturing process can be reduced.

Because the prefabricated components of the tunnel and the open caisson are circular and have larger sizes, for convenient transportation, the prefabricated components are manufactured in a blocking mode, each prefabricated component is arc-shaped, the prefabricated components are assembled and connected through bolts, and bolt holes are reserved in the circumferential direction and the longitudinal direction of each prefabricated component. When the prefabricated parts are required to be hoisted, the prefabricated parts are placed in different modes, and the hoisting tools are different. Traditional shield constructs section of jurisdiction and adopts wire rope or suspender hoist and mount, with wire rope easily damage prefabricated component, use the suspender to lead to the suspender wearing and tearing easily, shorten suspender life, unsafe and the risk is big.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the arc rod type lifting appliance is used for lifting prefabricated pipe pieces and is used for solving the problems that the existing shield pipe pieces are low in lifting efficiency and poor in safety performance due to the adoption of steel wire ropes or hanging strips.

In order to achieve the technical effects, the utility model adopts the following technical scheme:

the arc rod type lifting appliance for lifting the prefabricated pipe piece is characterized by comprising a lifting lug and an arc rod, wherein one end of the lifting lug is provided with a lifting hole, the other end of the lifting lug is fixedly welded with one end of the arc rod, the other end of the arc rod is provided with external threads, the arc rod is sleeved with a gasket at the end and is in threaded connection with a nut, and the bending radius of the central line of the arc rod is the same as that of a bending bolt hole on the pipe piece; during hoisting, the arc-shaped rod penetrates through the bent bolt hole of the pipe piece, the lifting lug is located on one side of the pipe piece, which is not provided with an operation hole, the other end of the arc-shaped rod penetrates through the bent bolt hole and stretches into the operation hole, and the gasket and the nut are connected with the arc-shaped rod in the operation hole.

Further, the both ends of arc pole all are equipped with the external screw thread, the lug is kept away from the terminal surface center of one end of hanging hole and is equipped with the screw hole, and the lug still with arc pole threaded connection.

Further, the arc-shaped rod is in threaded connection with two nuts at the rear of the gasket.

Further, the lifting lug, the arc-shaped rod, the nut and the gasket are all made of steel materials.

Further, zinc-based chromate anti-corrosion coatings are arranged on the surfaces of the lifting lug, the arc-shaped rod, the nut and the gasket.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the arc-shaped rod is welded on the lifting lug, the other end of the arc-shaped rod is connected with the nut to form the novel lifting tool, the novel lifting tool is simple in structure and convenient to process, the lifting tool is fixed in the bent bolt hole of the pipe piece, and the pipe piece is lifted and transported through the connection of the lifting mechanical equipment and the lifting hole of the lifting tool, so that the lifting is convenient, the pipe piece lifting efficiency is improved, the problem that the steel wire rope is easy to damage prefabricated parts when the existing pipe piece is lifted by adopting the steel wire rope or the hanging belt is solved, the hanging belt is easy to wear by using the hanging belt, the service life of the hanging belt is shortened, and the safety of pipe piece lifting is improved.

The foregoing description is only an overview of the present utility model, and may be implemented in accordance with the teachings of the present specification, so that the foregoing and other objects, features, and advantages of the present utility model may be more readily understood, and further detailed description of the present utility model may be had by reference to the accompanying drawings and examples, it being apparent that the examples described are some, but not all, of the embodiments of the utility model.

Drawings

FIG. 1 is a schematic view of the construction of a spreader of the present utility model;

fig. 2 is a schematic structural view of the hoisting operation of the present utility model.

The reference numerals and corresponding names in the drawings are:

1. lifting lugs, 11 hanging holes, 2 arc-shaped rods,

3. Nut, washer, segment 5,

51. An operation hole.

Detailed Description

An arc rod type lifting appliance for lifting prefabricated pipe pieces is shown in fig. 1, and comprises lifting lugs 1, arc rods 2, washers 4 and nuts 3. One end of the lifting lug 1 is provided with a lifting hole 11, the periphery of the lifting hole 11 is provided with a rounding angle, and the center of the end face of the other end of the lifting lug 1 is provided with a threaded hole. The both ends of arc pole 2 all are equipped with the external screw thread, and arc pole 2 one end wears to establish at threaded hole to with lug 1 terminal surface welded fastening, the gasket is established to the cover of arc pole 2 other end, and threaded connection two nuts 3. The center line bending radius of the arc-shaped rod 2 is the same as that of the bent bolt hole on the pipe piece. The lifting lug 1, the arc-shaped rod 2, the nut 3 and the washer 4 are all made of steel materials, the mechanical performance grade of the lifting lug 1 and the arc-shaped rod 2 is more than 8.8, the mechanical performance grade of the nut 3 at least reaches 8.8, the hardness Hv=200 of the washer 4, and zinc-based chromate anti-corrosion coatings and composite coatings are arranged on the surfaces of the lifting lug 1, the arc-shaped rod 2, the nut 3 and the washer 4.

When the utility model is used for hoisting, as shown in fig. 2, the arc-shaped rod 2 is firstly arranged in the bent bolt hole of the duct piece 5 in a penetrating way, the lifting lug 1 is positioned on one side of the duct piece 5 without the operation hole 51, the other end of the arc-shaped rod 2 passes through the bent bolt hole and stretches into the operation hole 51, the gasket and the nut 3 are connected with the arc-shaped rod 2 in the operation hole 51, the nut 3 is screwed, and when in hoisting, the lifting lug 1 can be connected by a lifting hook or a steel wire rope of a crane or hoisting equipment, and the disassembly is finished in the direction after the hoisting is finished. According to the utility model, the arc-shaped rod is welded on the lifting lug, the other end of the arc-shaped rod is connected with the nut to form the novel lifting tool, the novel lifting tool is simple in structure and convenient to process, the lifting mechanical equipment is fixed in the bent bolt hole of the pipe piece, and is connected with the lifting hole of the lifting tool to lift the pipe piece and transport the pipe piece, so that the lifting is convenient, the pipe piece lifting efficiency is improved, the problem that the prefabricated component is easily damaged by the steel wire rope when the existing pipe piece is lifted by adopting the steel wire rope or the hanging belt is solved, the hanging belt is easily worn by using the hanging belt, the service life of the hanging belt is shortened, and the safety of pipe piece lifting is improved. In addition, the structure of the pipe piece upper bending bolt hole is fully utilized by the arc rod type lifting tool design, so that the lifting hole is not required to be arranged on the inner side and the outer side of the pipe piece during pipe piece processing, the complexity of pipe piece manufacturing is reduced, and the pipe piece manufacturing cost and the manufacturing period are reduced.

The present utility model is not limited to the above-described specific embodiments, and it is apparent to those skilled in the art from the above-described idea that various modifications can be made without inventive step and without departing from the scope of the present utility model.

Claims

1. The arc rod type lifting appliance for lifting the prefabricated pipe piece is characterized by comprising a lifting lug and an arc rod, wherein one end of the lifting lug is provided with a lifting hole, the other end of the lifting lug is fixedly welded with one end of the arc rod, the other end of the arc rod is provided with external threads, the arc rod is sleeved with a gasket at the end and is in threaded connection with a nut, and the bending radius of the central line of the arc rod is the same as that of a bending bolt hole on the pipe piece; during hoisting, the arc-shaped rod penetrates through the bent bolt hole of the pipe piece, the lifting lug is located on one side of the pipe piece, which is not provided with an operation hole, the other end of the arc-shaped rod penetrates through the bent bolt hole and stretches into the operation hole, and the gasket and the nut are connected with the arc-shaped rod in the operation hole.

2. The arc rod type lifting appliance for lifting prefabricated pipe pieces according to claim 1, wherein external threads are arranged at two ends of the arc rod, a threaded hole is arranged in the center of the end face of one end of the lifting lug, which is far away from the lifting hole, and the lifting lug is further in threaded connection with the arc rod.

3. The arc rod type lifting appliance for lifting prefabricated pipe pieces according to claim 1, wherein the arc rod is in threaded connection with two nuts at the rear of the gasket.

4. The arc rod type lifting appliance for lifting prefabricated pipe pieces according to claim 1, wherein the lifting lug, the arc rod, the nut and the gasket are all made of steel materials.

5. The arc rod type lifting appliance for lifting prefabricated pipe pieces according to claim 1, wherein zinc-based chromate anti-corrosion coatings are arranged on surfaces of the lifting lug, the arc rod, the nut and the gasket.