Universal testing machine with detecting and leveling movable cross beam and detecting and leveling method

Abstract

The invention discloses a universal testing machine with a detection leveling moving cross beam, and belongs to the technical field of universal testing machines. Leveling detection devices are arranged at the two ends, close to lead screws, of a movable cross beam; the leveling detection device comprises balance wings which are symmetrically arranged in front of and behind the movable cross beam, and a guide rail which is vertically connected with the base and is provided with a first sliding chute on the inner side surface; the outer side ends of the balance wings are matched with the first sliding chute in shape; a weight measuring block and a leveling block are arranged on the upper side face of the balance wing from outside to inside, and a weight sensor is arranged at the bottom of the weight measuring block of the balance wing. Electromagnetic driving assemblies for driving the leveling blocks to move are arranged at the lower parts of the balance wings; the controller starts / stops the electromagnetic driving assembly by judging whether the received signal of the weight sensor is consistent with an original value or not, so that the movable cross beam is balanced. Abrasion of the movable beam in the using process can be effectively detected, adjustment is conducted in time, stress on the two sides of the movable beam is balanced, abrasion expansion is reduced, the test accuracy is improved, and the service life of the movable beam is prolonged.

Description

technical field [0001] The invention relates to the technical field of universal testing machines, in particular to a universal testing machine with a detection and leveling moving beam and a detection and leveling method. Background technique [0002] The universal testing machine is mainly used for testing the mechanical properties of metal and non-metal materials. The moving beam is driven up or down by the drive system, deceleration device and screw rod to make the specimen stretch or compress. [0003] In use, the movement of the moving beam is accompanied by friction with the screw rod. During long-term use, the moving beam will be more or less micro-deformed, and these micro-deformations are difficult to directly observe, resulting in the effect of the test on the specimen. If the force is offset, the test results have errors. If it cannot be found and adjusted, the wear of the moving beam will continue to expand. SUMMARY OF THE INVENTION [0004] In order to overc...

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Problems solved by technology

[0003] In use, the movement of the moving beam is accompanied by friction with the screw rod. During long-term use, the moving beam will be more or less micro-deformed, and these micro-deformations are difficult to observe directly, resulting in the effect on the specimen during the test. The force is offset, and the test results have errors. If it cannot be found and adjusted, the wear of the moving beam will continue to expand

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