Device used for testing puncture resistance of safety shoes and capable of simulating real situation

Abstract

The invention provides a device used for testing the puncture resistance of safety shoes and capable of simulating a real situation. The device comprises a testing frame, a press plate, a barbed nail,counterweight columns, a U-shaped clamping block, an adjustment threaded hole and an adjustment screw; a cavity is formed between a top plate and an insertion plate of the testing frame, a puncture hole is formed in the middle of the top of the testing frame, and hand wheel screws penetrate through through holes and are screwed into threaded connection holes in the two ends of the testing frame;the adjustment screw penetrates through a bearing on a top plate of a supporting plate and is screwed into the adjustment threaded hole in an adjustment column, a clamping frame with an open lower endis connected to the bottom of the adjustment column through bolts, a retractable rod on an electric cylinder penetrates through an end plate of the clamping frame and is welded with the U-shaped clamping block, and the counterweight columns can be screwed into counterweight threaded holes through threads of the front ends. In the process that a puncture testing press block drives the barbed nailto downwards puncture a testing part when freely falling, the situation of a real environment is simulated, the number of the counterweight columns is increased or decreased, and accordingly the puncture force of the barbed nail in contact with the testing part is changed.

Description

technical field [0001] The invention belongs to the technical fields of safety shoe testing and mechanical testing, and more specifically relates to a safety shoe puncture resistance testing device capable of simulating real situations. Background technique [0002] Safety shoes are a general term for safety shoes and protective shoes, and generally refer to footwear worn in different workplaces to protect feet and legs from foreseeable injuries. Safety protective shoes are high-tech and high-value-added footwear products. The production process of safety protective shoes has high requirements for raw materials, auxiliary materials, chemicals, mechanical equipment, etc. At present, many shoe-making companies with a certain scale and grade in China Enterprises have set their sights on safety and protective shoes, a market area previously occupied by developed countries. [0003] The inventor found similar patents in the process of searching for patents. For example, the pate...

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Problems solved by technology

[0004] Based on the above, the inventors found that the traditional safety shoe puncture resistance test carried out the pressure resistance and puncture resistance test on the test piece through the hydraulic cylinder, which could not simulate the instantaneous impact force on the test piece when different workpieces were dropped. The instantaneous impact force is greater than the ordinary hydraulic pressure, and the pressure resistance and puncture resistance test of the test piece using the ordinary hydraulic cylinder will affect the accuracy of the test

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