CN202994582U

CN202994582U - Device for reducing friction noise of tensile test for steel wire rope

Info

Publication number: CN202994582U
Application number: CN 201320010961
Authority: CN
Inventors: 聂林; 钱晓耀; 章雪生
Original assignee: China Jiliang University
Current assignee: China Jiliang University
Priority date: 2013-01-07
Filing date: 2013-01-07
Publication date: 2013-06-12
Anticipated expiration: 2023-01-07

Abstract

The utility model discloses a device for reducing the friction noise of a tensile test for a steel wire rope. The device comprises the steel wire rope (5) with casting parts (3) at both ends, and a clamping block (4), and is characterized in that an upper semicircle hole (1) having the radius which is less than the diameter of the steel wire rope (5) and a lower semicircle hole (2) having the radius which is greater than the diameter of the steel wire rope (5) are formed in the middle of the clamping block (4); the height h1 of the upper semicircle hole (1) is less than the height h2 of the lower semicircle hole (2); and the stress mode of the both ends of the steel wire rope (5) and the clamping block (4) mainly adopts pressure. During a tensile test for the steel wire rope (5), because slide friction is reduced, the noise generated between the steel wire rope (5) and the clamping block (4) due to friction is greatly reduced; and compared with clamps in the prior art, a tensile test friction clamp capable of reducing the noise of the steel wire rope is more beneficial for accurately obtaining data during a tensile process for the steel wire rope, thus creating conditions for ensuring the accuracy of the test data.

Description

A kind of device that reduces wire rope tension test frictional noise

Technical field

The utility model relates to the grip of testing machine technology, relates in particular to a kind of application that is applicable in the wire rope tension test.

Background technology

At present, wire rope is widely used in a lot of fields such as communications and transportation, harbour, metallurgy, coal, skyscraper, tourism mountain-climbing cableway as traction and bearing carrier, and its security performance is related to life and property safety.Can determine the performance characteristic of wire rope for the tension test of wire rope, the understanding of its security performance is had very large meaning.The fixture of selling on market can be installed workpiece rapidly, easily and safely; Its deficiency is: a kind of special fixture for the wire rope tension test is not yet arranged, easily produce frictional noise in experimentation between fixture and test specimen, the accurate very property of testing is caused large impact.

The utility model content

The purpose of this utility model is: propose a kind of special grip device for the wire rope tension test, when guaranteeing the wire rope drawing effect, can effectively reduce the frictional noise between wire rope and fixture.

For realizing the purpose of the utility model, intend adopting following technology: two ends are arranged with wire rope and the fixture block of casting part, it is characterized in that: be provided with radius in the middle of described fixture block less than first circular hole of wire rope and radius second circular hole greater than wire rope, the height h1 of first circular hole is less than the height h2 of second circular hole.

Compared with prior art, the beneficial effects of the utility model are, reduce the axial contact area of wire rope and fixture, increase its contact area radially, the axial displacement of wire rope and fixture reduces greatly, corresponding frictional noise also just reduces greatly, and this has just created condition for the accuracy of test.

Description of drawings

Fig. 1 has illustrated wire cable clamp tensile test apparatus figure;

Fig. 2 has illustrated the front view of fixture block;

Fig. 3 has illustrated the rear view of fixture block;

Fig. 4 has illustrated the right view of fixture block;

Fig. 5 has illustrated the top view of fixture block.

Marginal data: 1. first circular hole, 2. second circular hole, 3. casting part, 4. fixture block, 5. wire rope.

Embodiment

When carrying out two ends with wire rope (5) tension test of casting part (3), with four fixture blocks 4 of wire rope 5 use, forming in twos one group assembles by Fig. 1 mode, carry out tension test, due to the force way that has changed wire rope 5, axial rub is very little, and main part of the force is casting part 3 and first circular hole 1 top, and the noise that produces in tension test can reduce greatly.

Key of the present utility model is: first circular hole 1 radius is less than wire rope 5 radiuses, play fixation, second circular hole 2 radiuses are greater than wire rope 5 radiuses, contactless with wire rope 5, casting part 3 radiuses are greater than the radius of first circular hole 1, the effect of power becomes the pressure at casting part 3 and first circular hole 1 top, thereby reaches the effect that reduces frictional noise.

Claims

1. device that reduces wire rope tension test frictional noise, have: two ends are with wire rope (5) and the fixture block (4) of casting part (3), it is characterized in that: be provided with radius in the middle of described fixture block (4) less than first circular hole (1) and radius second circular hole (2) greater than wire rope (5) of wire rope (5), the height h1 of first circular hole (1) is less than the height h2 of second circular hole (2).