Insulating paperboard tensile strength test fixture

Abstract

An insulating paperboard tensile strength test fixture belongs to the technical field of transformer insulating part production and comprises two groups of supports and two groups of chucks, wherein the chucks are mounted on the supports, and the supports are mounted on a tensile machine. The support comprises a main table, a guide rod, a limiting boss, a guide lug, a connecting rod and a threaded hole, wherein the main table is of a main connecting structure of the support, the guide rod is arranged on the rear side of the main table, the limiting boss is arranged on the guide rod, and the guide lug is arranged at the other end, opposite to the guide rod, of the rear side of the main table; the connecting rod is arranged on the main table in the same extending direction as the guide rod; the chucks are installed on the connecting rods, and the threaded holes are formed in one sides of the connecting rods. Each chuck is composed of two symmetrical clamping plates, wherein the two clamping plates are installed in a staggered mode to form the chuck; each clamping plate comprises a clamping body, a shaft barrel, a semi-conical hole and a conical rod, wherein the shaft barrel is arranged in the middle of the clamping body and installed on the connecting rod, the semi-conical hole is formed in the bottom of the clamping body, the conical rod comprises a conical head and a screw rod, the screw rod is installed in threaded hole, and the conical head is sleeved in the semi-conical hole.

Description

technical field [0001] The invention belongs to the technical field of transformer insulating parts production, and in particular relates to a jig for testing the tensile strength of insulating cardboard. Background technique [0002] A large number of insulating parts are required in the manufacturing process of transformers. The use of insulating parts in transformers usually has its own technical performance requirements. It can only be used on transformers after passing necessary performance tests and passing the test. One of the test contents is tensile strength. strength test. In the tensile strength test of insulating cardboard, it is first necessary to cut several strip samples of 50mm×200mm, adjust the distance between the two chucks of the standard tensile machine with automatic counting to 100mm, and start the test after clamping. In this process, the operation of adjusting the distance between the two chucks and clamping the sample is usually cumbersome. Usually...

AI Technical Summary

Problems solved by technology

In this process, the operation of adjusting the distance between the two chucks and clamping the sample is usually cumbersome. Usually, one test subject needs to test multiple samples, and the distance between the chucks needs to be completed when each sample is tested. Operations such as adjustment, measurement, and clamping often take up a large part of the test time during on-site testing, which seriously affects the test work efficiency

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