Combined clamp for rack upright post pressure test

Abstract

The invention relates to a combined clamp for a rack upright post pressure test. The combined clamp comprises an upright post fixing plate, a worktable fixing plate, an upper steel ball clamping block and a lower steel ball clamping block, wherein an upright post bottom plate is fixed on the upper surface of the upright post fixing plate; an upright post is welded on the upright post bottom plate; the lower surface of the upright post fixing plate is connected with the upper steel ball clamping block; a T-shaped groove worktable is fixed on two sides of the worktable fixing plate respectively; the upper surface of the worktable fixing plate is connected with the lower steel ball clamping block; and the same groove for clamping steel balls is formed between opposite surfaces of the upper steel ball clamping block and the lower steel ball clamping block. The combined clamp can guarantee that two ends of a test piece are always hinged with a press worktable in the test, and the test result is more accurate.

Description

technical field [0001] The invention relates to a fixture, in particular to a combined fixture used for the pressure test of a shelf column. Background technique [0002] In engineering practice, there are a large number of shelf columns that need to be pressure tested. The principle of the shelf column test is given in (EU logistics equipment standard FEM10.2.02-shelf design specification). Fully articulated. However, how to accurately and conveniently complete the shelf column pressure test still has the following problems: (1) The two ends of the column test piece cannot be completely hinged with the upper and lower worktables of the press, and a set of special fixtures needs to be designed; (2) At present , the simplified method is mostly used in engineering. That is, no hinge or the upper end is hinged and the lower end is not hinged. Therefore, the test is not a complete column axial compression test, which makes the test process and the test principle different, an...

AI Technical Summary

Problems solved by technology

However, how to accurately and conveniently complete the shelf column pressure test still has the following problems: (1) The two ends of the column test piece cannot be completely hinged with the upper and lower workbenches of the press, and a set of special fixtures needs to be designed; (2) At present , the simplified method is mostly used in engineering

Therefore, the test is not a complete column axial compression test, which makes the test process and the test principle different, and the test results cannot accurately explain the performance of the column; (3) Different types of column test pieces have different end structures or sizes , for different fixtures designed for different specimens, it will greatly increase the test cost

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