Pipe withdrawing tongs

Abstract

Pipe withdrawing tongs comprise a chuck, a shuttle-shaped connecting block, two operating rods, two struts, two clamping sleeves, two ejector pins and two springs, wherein the chuck is fixedly connected to the middle of the shuttle-shaped connecting block and tightly clamps a small-diameter pipe; the two operating rods are symmetrically hinged to two sides of the shuttle-shaped connecting block; T-shaped through grooves are formed in the two operating rods along rod bodies of the operating rods; one ends of the two struts are respectively hinged to the two operating rods; the other ends of the two struts are respectively hinged to the two clamping sleeves; the inner sides of the two clamping sleeves are abutted to the outer wall of the small-diameter pipe; the lower end surfaces of the two clamping sleeves are abutted to a pipe end of a large-diameter pipe; the outer sides of the two clamping sleeves are respectively connected with the two ejector pins; the two ejector pins respectively penetrate in the T-shaped through grooves of the two operating rods; the two springs are respectively sleeved on the two ejector pins; one ends of the two springs are respectively abutted to the two clamping sleeves; the other ends of the two springs are respectively abutted to steps of the T-shaped through grooves through two gaskets; and the springs are always in a compressed state and push the two clamping sleeves to the outer wall of the small-diameter pipe. By using the pipe withdrawing tongs, inlaid pipes can be withdrawn by labor-saving pressing operation. The pipe withdrawing tongs have the advantages of simple structure and easiness in operation.

Description

technical field [0001] The invention relates to a tool, in particular to a pipe withdrawing pliers capable of assisting the withdrawal of nested pipes, and belongs to the field of mechanical technology. Background technique [0002] Pipelines are inseparable from people's daily life. It is inevitable that different pipes are connected to each other. A considerable part of them are not connected by standard pipe joints, but directly connected by pipes, such as household gas hoses embedded with gas supply metal pipes. Nested together, oil-resistant pipes on automobiles are nested with metal pipes, etc. The current problem is that the connections of these pipes are generally interference fit, and they are not often disassembled. After a long period of time, they will be difficult to disassemble or even break when they are pulled out. In some cases, due to the limited operating space, it is very difficult to operate directly by hand, and even the operator is prone to injury. ...

AI Technical Summary

Problems solved by technology

The current problem is that the connections of these pipes are generally interference fit, and they are not often disassembled. After a long period of time, it will be difficult to disassemble, or even break when pulled out.

In some cases, due to the limited operating space, it is very difficult to operate directly by hand, and even the operator is prone to injury

[0003] At present, most of the pipes that are nested together are loaded and unloaded directly by hand or by using auxiliary tools, which will have a great impact on their life.

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