A tensile testing machine and its traction mechanism

Abstract

The invention provides a tensile testing machine and its traction mechanism, belonging to the field of tensile testing equipment. The traction mechanism includes a machine base, a driving screw and a driving unit; there are two parallel driving screws, and the two driving screw and the machine base are connected by a transmission cylinder, which is rotatably connected to the machine base and It is axially fixed with the machine base, the driving unit is fixed on the machine base, and a transmission gear is fixedly sleeved on the transmission cylinder, and the driving unit includes two worms that simultaneously drive two transmission gears. The tensile machine also includes a column located below the traction mechanism and a hydraulic seat, an upper jaw and a lower jaw arranged in sequence along the vertical direction; the lower jaw is fixed on the column; a hydraulic press is fixed on the hydraulic seat, and the hydraulic rod of the hydraulic press and the The upper jaw secures the connection. The invention solves the problem of the tension detection of various products that the stroke of the hydraulic press is limited and cannot be adapted to under high tension, saves cost and reduces equipment failures.

Description

technical field [0001] The invention relates to the technical field of tensile testing equipment, in particular to a tensile testing machine and a traction mechanism thereof. Background technique [0002] Large bolts are often used as fasteners in building structures such as wind power generation, various heavy machinery and bridges. If their strength is not enough, the loss of safety accidents will be more serious. Therefore, their tensile strength needs to be tested. The nominal diameter of large bolts can exceed 72mm, and the tensile force that can withstand can also reach the level of 100 tons. During the pull test, a pull force of 5000KN is required to ensure the smooth completion of the test. [0003] When carrying out tensile or compressive tests of products, hydraulic presses are often used, but different products require different tension positions. The stroke of hydraulic presses should not be too long, and the cost of hydraulic supporting equipment will increase ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a tensile testing machine and its traction mechanism, which solves the problem in the prior art that the stroke of the hydraulic press is limited under a large tensile force and cannot adapt to the tension of various products. detection problem

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