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Test-piece clamping pincers for CTOD testing

A test piece clamping and testing technology, applied in the direction of chucks, manipulators, manufacturing tools, etc., can solve the problem that the test piece cannot be seated at one time

Active Publication Date: 2016-08-03
CNPC OFFSHORE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the test piece cannot be placed in place at one time, and the position of the test piece needs to be adjusted repeatedly in the coolant until the indenter touches the test piece, and the operator's hand can leave the test piece

Method used

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  • Test-piece clamping pincers for CTOD testing
  • Test-piece clamping pincers for CTOD testing
  • Test-piece clamping pincers for CTOD testing

Examples

Experimental program
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Embodiment Construction

[0025] see Figure 1 to Figure 3 , shows the CTOD test specimen clamping pliers of the present invention, which is used to test the open displacement test of the crack tip of the welded joint. During the test, the tester is used to clamp the specimen, which can ensure that the specimen can be safely and conveniently , Clamping, moving and positioning smoothly.

[0026] Described CTOD test specimen clamping clamp comprises support frame 3, two sets of main clamps and two sets of auxiliary clamps, see image 3 , the support frame 3 is an I-shaped member, and the two sides are oppositely arranged connecting rods, and the two connecting rods are connected through an intermediate rod, and the connecting rods are relatively arranged in parallel, and each set of main tongs is composed of two main tong assemblies 1, Each set of auxiliary tongs is composed of two auxiliary tongs assemblies 2. The main tongs component 1 includes a pliers handle 101, an adjustment rod 102, a large turn ...

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Abstract

The invention provides test-piece clamping pincers for CTOD testing. The test-piece clamping pincers comprise a supporting frame, two sets of main pincers and two sets of auxiliary pincers. The supporting frame is an H-shaped member, and connecting rods arranged oppositely are arranged on the two sides of the supporting frame. The two connecting rods are connected through a middle rod. The connecting rods are arranged in parallel. Each set of main pincers is composed of two main pincers assemblies. Each set of auxiliary pincers is composed of two auxiliary pincers assemblies. Each main pincers assembly comprises a pincers handle, an adjusting rod, a large crutch, a pincers foot and a first pressing spring, all of which are connected in sequence. Each auxiliary pincers assembly is composed of a pincers crutch, a lengthening rod, a small crutch, a pincers claw and a second pressing spring, all of which are connected in sequence. Accordingly, the test-piece clamping pincers are safe, reliable and easy to use, the situation that when a medium or large test-piece is tested, due to falling of the test-piece, accidents are caused, or cooling liquid splashes, and operators are injured can be effectively avoided, and the safety of testing is improved.

Description

technical field [0001] The invention relates to the technical field of test auxiliary equipment, in particular to a CTOD test specimen clamping pliers which can be applied to welded joint CTOD test tools. Background technique [0002] In the current CTOD low-temperature test, the placement and removal of the specimens are all manual operations, that is, the operator wears gloves, uses simple scissors to clamp and transport the specimens, and puts the specimens into the cooling liquid of the incubator. In, or take out the test piece after the test from it, and place it on the testing machine. When using small specimens for testing, because the specimens are light, flexible, and easy to move, phenomena such as difficulty in handling, contact with coolant, falling off, and difficulty in positioning, etc., do not or rarely occur. However, for medium or large specimens, since only the two sides of the specimen are clamped, there are few points of action of the clamping force and...

Claims

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Application Information

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IPC IPC(8): B25J15/10
CPCB25J15/0052B25J15/10
Inventor 李春润曹振平牛虎理胡艳华孙勃刘剑张光华关幼耕
Owner CNPC OFFSHORE ENG
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