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Strength test fixture capable of conveniently changing double end stud

A double-headed stud, strength test technology, applied in the direction of strength characteristics, measuring devices, instruments, etc., can solve the problems affecting the efficiency of bolt tension test, the connection efficiency of bolt and hydraulic testing machine is not high, and achieve the effect of convenient stress loading

Inactive Publication Date: 2018-03-06
李林君
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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. In order to solve the problem of efficiency, the present invention provides a strength test fixture that can easily replace double-ended studs

Method used

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  • Strength test fixture capable of conveniently changing double end stud

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, a strength test fixture that can easily replace double-ended studs includes a first block 2 and a second block 4, and the first block 2 and the second block 4 are respectively connected with first pull rods 1 and the 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; A pull rod 1 is used for stress transmission between the hydraulic testing machine and the first block 2, and a second pull rod 6 is used for stress transmission between the hydraulic testing machine and the second block 4; The axis of a pull rod 1 rotates, and the second block 4 can rotate relative to the axis of the second pull rod 6;

[0023] 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 grea...

Embodiment 2

[0028] Such as figure 1 As shown, this embodiment is further limited 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, the first pull rod 1 The axis of is collinear with the centerline of the T-shaped slot on the first clamping block 2 .

[0029] In order to facilitate the uniformity of the stress on the second pull rod 6, the second block 4, the screw rod or each point on the cross section of the nut, the axis of the second pull rod 6 is collinear with the center line of the T-shaped groove on the second block 4 .

[0030] In the absence of an auxiliary screw or nut, in order to make this fixture at least applicable to the tension test of a threaded rod with no nut end at both ends and a screw with a nut end at one end, T on the first block 2 A nut is arranged in the T-shaped slot and / or the T-shaped slot on the second block 4, and the nut is locat...

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Abstract

The invention discloses a strength test fixture capable of conveniently replacing double-headed studs. pull rod; the first block and the second block are provided with a T-shaped slot; the first block and the second block are provided with internal threaded holes, and the inner threaded holes on the first block The axis of the threaded hole is parallel to the depth direction of the T-shaped groove on the first block; the axis of the internally threaded hole on the second block is parallel to the depth direction of the T-shaped groove on the second block, and the internally threaded hole is parallel to the corresponding The bottoms of the T-slots intersect. With this structure, compared with directly connecting the bolts to the hydraulic testing machine, the efficiency of picking and placing the bolts on the hydraulic testing machine is ten times faster than that of the traditional scheme; at the same time, this fixture can be conveniently used in the strength test of double-ended studs.

Description

technical field [0001] The invention relates to the technical field of an experimental platform for mechanical connectors, in particular to a strength test fixture that can conveniently replace double-ended studs. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/04
CPCG01N3/04
Inventor 李林君
Owner 李林君
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