Bolt tension test fixture

A tensile test and fixture technology, applied in measuring devices, instruments, scientific instruments, etc., can solve the problems affecting the efficiency of the bolt tensile test and the low connection efficiency of the bolt and the hydraulic testing machine.

Inactive Publication Date: 2016-04-27
CHENGDU HENGTONG ZHAOYE PRECISION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the tensile mechanical performance detection of finished bolts in the above-mentioned prior art, the hydraulic testing machine is generally used in the prior art for measurement. However, the connection efficiency between the bolt and the hydraulic testing machine in the prior art is not high, which affects the performance of the bolt tensile test. efficiency problem, the invention provides a bolt tension test fixture

Method used

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  • Bolt tension test fixture

Examples

Experimental program
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Effect test

Embodiment 1

[0018] like figure 1 As shown, a bolt tension test fixture includes a first block 2 and a second block 4, and the first block 2 and the second block 4 are respectively fixedly connected with a first pull rod 1 and a second pull rod 6 , the first pull rod 1 is used for the fixed connection between the first block 2 and the hydraulic testing machine, and the second pull rod 6 is used for the fixed connection between the second block 4 and the hydraulic testing machine;

[0019] The first block 2 and the second block 4 are all provided with a T-shaped slot, the width of the bottom end of the T-shaped slot is greater than the width of the opening end, and the depth direction of the T-shaped slot on the first block 2 is the same as that of the first block 2. The axial direction of a pull rod 1 is parallel, and the depth direction of the T-shaped groove on the second block 4 is parallel to the axial direction of the second pull rod 6 .

[0020] In this embodiment, the opening ends ...

Embodiment 2

[0022] like figure 1 As shown, this embodiment is further defined on the basis of Embodiment 1: in order to facilitate the uniformity of force on each point on the cross-section of the first pull rod 1, the first block 2, the screw or the nut 5, the first pull rod The axis of 1 is collinear with the centerline of the T-shaped slot on the first block 2.

[0023] In order to facilitate the uniformity of the stress on each point on the cross-section of the second pull rod 6, the second block 4, the screw or the nut 5, the axis of the second pull rod 6 is in common with the center line of the T-shaped groove on the second block 4. Wire.

[0024] In the absence of an auxiliary screw or nut 5, in order to make the fixture at least usable for the tension test of a threaded rod that is not provided with a 5 end of a nut at both ends, and a screw that is provided with a 5 end of a nut at one end, the first clamping block 2 A nut 5 is disposed in the T-shaped slot on the top and / or th...

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Abstract

The invention discloses a bolt tension test fixture. The bolt tension test fixture comprises a first clamping block and a second clamping block. A first pulling rod and a second pulling rod are fixedly connected to the first clamping block and the second clamping block respectively. The first pulling rod is used for fixed connection between the first clamping block and a hydraulic tester, and the second pulling rod is used for fixed connection between the second clamping block and the hydraulic tester. A T-shaped groove is formed in each of the first clamping block and the second clamping block. The bottom ends of the T-shaped grooves are wider than the open ends. The depth direction of the T-shaped groove in the first clamping block is parallel to the axis direction of the first pulling rod. The depth direction of the T-shaped groove in the second clamping block is parallel to the axis direction of the second pulling rod. The efficiency of picking and putting bolts on the hydraulic tester is improved by ten times when connecting the bolts to the hydraulic tester directly in the prior art is replaced by utilizing the bolt tension test fixture.

Description

technical field [0001] The invention relates to the technical field of a mechanical connector experiment platform, in particular to a bolt tension test fixture. Background technique [0002] A bolt is a mechanical part, usually a cylindrical threaded fastener with a nut. The bolt is composed of two parts, the head and the screw rod (a cylinder with external threads). When used, it needs to cooperate with the nut to fasten and connect two parts with through holes. This connection form is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection. According to the way of connection force: divided into ordinary and hinged holes. According to the shape of the head: there are hexagonal head, round head, square head, countersunk head, etc. Among them, the hexagonal head is the most commonly used. At present, there are endless bolts used in different fields or purposes, such as self-tapping sc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/04
CPCG01N3/04
Inventor 吴光武
Owner CHENGDU HENGTONG ZHAOYE PRECISION MACHINERY
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