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Device for converting one-way pressure into multidirectional tensile force and pressure

A one-way pressure and tension technology, which is applied in the direction of measuring devices, applying stable tension/pressure to test the strength of materials, instruments, etc., can solve the problems that the loading effect cannot be obtained, and the shape and size requirements are very high, so as to achieve easy maintenance and simple operation The effect of easy operation and high test accuracy

Active Publication Date: 2017-07-28
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in the existing technology, some can only realize multidirectional stretching, such as the test device whose publication number is CN102706731A, this device can only realize bidirectional stretching of constant velocity and equal displacement to metal sheet; some can only realize multidirectional Compression, such as the loading device with the publication number CN202631363U; some devices have very high requirements on the shape and size of the material, such as the loading device with the publication number CN104316394A, this device can only load the rectangular test piece, if a special shape test piece is used Unable to obtain the expected loading effect; some devices cannot achieve different tensile speeds in different directions, such as the test fixture whose publication number is CN204903286U, the four tensile directions of the device can only maintain the same speed

Method used

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  • Device for converting one-way pressure into multidirectional tensile force and pressure
  • Device for converting one-way pressure into multidirectional tensile force and pressure
  • Device for converting one-way pressure into multidirectional tensile force and pressure

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A device that converts unidirectional pressure into multidirectional tension and pressure, its structure is as follows figure 1 As shown, it consists of a load conversion transmission component, a clamping working component, and a data acquisition component.

[0040] The load conversion transmission assembly includes a bracket 3, two main transmission arms 1 arranged on the bracket 3, a transmission bevel gear 5 and a flywheel 2 connected to the two main transmission arms 1 through short bearings 4, and the two main transmission arms 1 The design satisfies the realization of the tension load and compression load, and the flywheel 2 is mainly for the manual reset of the main transmission arm after the work is finished. In addition, when the required load is small, especially in the case of compression, it can be carried out through the flywheel 2 Manual loading.

[0041] The structure of the clamping working components is as follows figure 2As shown, it includes a cha...

Embodiment 2

[0050] The present invention is used to measure the properties of materials by bi-directional compression testing. Remove the spur gears and push heads in the four directions and place the device on the working platform of the press, so that the main transmission arm is aligned with the center of the press slider to avoid eccentric loads and make the whole system more stable. Since it is to achieve compression, it should be pressed down figure 1 The main drive arm 1 on the middle and lower side. Place the sample on the working platform, manually rotate the flywheel 2 to make the push head and the clamp reach a suitable position, and then constrain the boundary of the sample by compressing the backing plate in the clamp. After the sample clamping is completed, the extrusion stroke and extrusion speed of the press are input to start the test. The sliding block of the press slides down, which drives the main transmission arm to slide down and then makes the bevel gear lying on ...

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Abstract

The invention relates to a device for converting one-way pressure into multidirectional tensile force and pressure. The device is composed of a load converting driving component, a clamping working component and a data collecting component, wherein the load converting driving component comprises a bracket, two main driving arms which are arranged on the bracket and a driving bevel gear and a fly wheel which are respectively connected with the two main driving arms through short bearings; the clamping working component comprises a chassis, an inner gear which is arranged in the chassis, a working platform which is erected on the inner gear and a top cover which is covered on the working platform; and the data collecting component comprises a force sensor and a laser displacement sensor which are arranged in a pushing head. Compared with the prior art, the device disclosed by the invention has the advantages that a performance test under a complex stress state can be performed on a metal plate, complex pre-strain can be generated before the forming of the metal plate and the device can be freely assembled and completely detached, is simply designed and has a powerful function.

Description

technical field [0001] The invention belongs to the field of sheet metal processing and performance testing, in particular to a device for converting unidirectional pressure into multidirectional tension and pressure. Background technique [0002] In the field of material performance testing, uniaxial tension and compression tests have been widely used as a conventional method to obtain the basic mechanical property parameters of materials. One of the conventional equipment. However, for some specific situations, uniaxial tension and compression tests can no longer meet the needs, and multi-directional tension / compression tests of materials are required. For example, in aerospace, most of the components are two-way or even multi-directional force-bearing structures. The failure characteristics under load are studied to ensure the safety of materials in use. Another example is in the field of civil engineering, the method of three-way loading is often used for material per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/02G01N3/08
CPCG01N3/02
Inventor 韩先洪陈孝督陈军
Owner SHANGHAI JIAO TONG UNIV
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