A crutch impact strength testing machine

Abstract

The invention provides an axillary crutch impact strength testing machine, which comprises a bracket, a frame mechanism for moving up and down, an armrest position adjustment mechanism, a leg position adjustment mechanism, a protective net and a control box; The T nuts connected to the screw screws are fixedly connected, the motor is connected to the reducer, and the extension shaft of the reducer is connected to the driving screw through a coupling. The driving screw drives the driven screw to rotate synchronously through the sprocket drive to drive the up and down movement of the frame. The weight moves up and down, and the posture of the crutches is adjusted through the posture adjustment mechanism of the armrest and the foot posture. The control box is fixedly connected to the vertical profile on the right side of the bracket, and the protective net is installed on the periphery of the testing machine, and the touch screen is connected to it; The first handwheel realizes the height adjustment of the armrest, turns the second handwheel to realize the front and back adjustment of the armrest, and turns the third handwheel to realize the front and back adjustment of the legs, and the height of the legs is fixed. The invention adopts electromagnet energization to lift and power off to release heavy hammer to realize drop hammer impact test.

Description

technical field [0001] The invention relates to an impact strength testing device, in particular to an impact strength testing machine of an armpit crutch, which belongs to the field of impact performance testing of an armpit crutch. Background technique [0002] With the increasing aging of the social population, the use of rehabilitation aids in people with disabilities has become increasingly widespread, and axillary crutches have become one of the most commonly used rehabilitation aids. Due to the dysfunction of the user's own body, the quality of the crutches is directly related to the safety of the users, so it is necessary to test the impact performance of the crutches. At present, in China, mechanical clamps are often used to lift and release heavy hammers to impact the handle of axillary crutches. The posture of the axillary crutches is fixed, and the impact part of the test equipment uses two cylinders. Cylinder 1 telescopically pushes the manipulator to move up a...

AI Technical Summary

Problems solved by technology

This method can effectively use the heavy hammer to impact the armpit handle for strength testing, but the impact method is complicated, the test and debugging are inconvenient, and the stability of the expansion and contraction of the cylinder cannot be controlled.

In addition, most of the current impact testing machines cannot flexibly adjust the posture of the axil crutches, and most of them adjust the axil crutches as a whole in the front and rear directions.

In addition, the bare metal form poses a potential threat to the safety of experimenters

These three points greatly affect the accuracy of the impact performance test of the axillary crutches

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