Novel ball pressure test apparatus

Abstract

A novel ball pressure test apparatus comprise a rack body, a loading assembly, a rotating shaft, a handle, at least two movable members, at least two connecting rods corresponding to the at least two movable members one by one, and at least two cranks corresponding to the at least two movable members one by one. The movable members of the novel ball pressure test apparatus are arranged on the rack body and can move along the height direction of the rack body, a test person shakes the handle in the ball pressure test process in order to drive the rotating shaft to rotate, and the connecting rods are driven through the cranks to downward move in order to drive the movable members to downward move and in order to make a pressure ball press a sample to be tested, so the pressure ball only has downward movement force and no other direction forces in the test period; and a loading assembly is very rapidly, vertically and stably lifted to make the pressure ball smoothly press the center position of the sample to be tested in order to provide the standard, standardized and ideal test apparatus, so accurate measured data can be obtained through standardized operation to prevent misjudgement, and the test person is not in contact with the load assembly in order to ensure the personnel safety of the test person.

Description

technical field [0001] The invention relates to a novel ball pressure testing device. Background technique [0002] The ball pressure test is one of the methods recommended by the International Organization for Standardization in the field of electrical safety to measure the hardness of plastics and the heat resistance of non-metallic materials. The temperature is pressed into the surface of non-metallic and non-ceramic materials for a certain period of time to test the heat resistance of electric tool structural materials, so as to ensure that the test product has sufficient support strength under high temperature working conditions and does not cause electrical safety hazards . [0003] In the prior art, the test device generally includes a support and a load assembly. The load assembly includes a connecting rod, two weights, a load body and a pressure ball. The two weights are respectively fixedly connected to both ends of the connecting rod. The load body is solid It i...

AI Technical Summary

Problems solved by technology

However, in the actual test, the sample is placed at the beginning and the sample is taken out at the end. Since the test oven is generally small in size and operates at a high temperature (75°C-160°C), it is difficult for the test personnel to ensure that there is no force in other directions except for the downward movement of the pressure ball. , and it is very easy for the test personnel to touch the weight or the load under the condition of limited time, resulting in personal injury, test failure or inaccurate test data

Moreover, since the oven has been operating in a closed environment at high temperature, it is impossible to use electric (it is very difficult to select electronic components that work at 160°C for a long time) or pneumatic (the oven is continuously high-pressured and almost airtight, and cannot be connected to the pneumatic device) to solve the problem.

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