Quantitative tension and compression testing device

Abstract

The invention relates to a quantitative tension and compression testing device which belongs to the technical field of material testing. The device comprises a fixed base, a support stand, a loading support stand, a quantitative tension and compression rod and three fixed pulleys. The device has simple structure, can be used together with other testing instruments, has strong extension applicability, and realizes very high testing precision and larger loading and moment increase by ingeniously arranging the positions of the three fixed pulleys and the length ratio of the tension and compression rods with geometric and leverage principles. The positions of the three fixed pulleys must be relatively on the same circular arc with a round pin hole at the middle part of a quantitative loading rod; and when a weight is quantitatively loaded and applied, the three fixed pulleys are still on the same circle of center so as to fully ensure the loading precision. The length ratio of quantitative loading rods A and B decides the loading torque ratio.

Description

technical field [0001] The invention belongs to the technical field of material testing, and in particular provides a quantitative tension-compression material testing mechanism with simple structure. Background technique [0002] With the development of industrial technology, the requirements for various mechanical properties of materials are getting higher and higher, which requires accurate testing of materials, and correspondingly increases the requirements for the performance of experimental instruments. At present, this type of equipment is mainly weight-type constant load tensile testing machine (or computer-controlled material tensile testing machine or universal testing machine) and force measuring ring (or spring device). The former test is accurate, but the equipment is expensive and occupies a large area, and it is inconvenient to carry and place; the latter has a simple structure, low price, and is suitable for batch tests, but the test accuracy of the device is...

AI Technical Summary

Problems solved by technology

The former test is accurate, but the equipment is expensive and occupies a large area, and it is inconvenient to carry and place; the latter has a simple structure, low price, and is suitable for batch tests, but the test accuracy of the device is too low, and in many cases it cannot meet the test requirements

[0003] At present, the existing technology has the State Intellectual Property Office authorization announcement number: CN200982938Y, patent name: a spring tension and compression testing machine; authorization announcement number: CN200986512Y, patent name: spring tension and compression testing machine; two invention patent tests disclosed here Accurate, but the equipment is expensive and occupies a large area, the cost of use and maintenance is high, and the tester needs to operate the tester, which limits its application in certain occasions

[0004] In the currently disclosed material testing machines, some technologies are designed for some specific fields and aspects, so there are certain limitations in use

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