A high and low temperature impact test box

Abstract

The invention discloses a high-low temperature impact experiment box. The inside of a box body of the experiment box is vertically divided into a high-temperature cavity and a low-temperature cavity by a thermal insulation wall, a rotating roller flush with the middle of the thermal insulation wall is rotatably inserted into the front wall and the rear wall of the box body, a pair of fixing net racks positioned on the same straight line are fixedly arranged on the outer surface of the middle of the rotating roller, the thermal insulation wall is symmetrically divided into two thermal insulation split walls by taking the rotating roller and the fixing net racks as a center, movable cavities are formed in the thermal insulation split walls, upper adjusting plates are inserted into the upperportions of the movable cavities, lower adjusting plates are inserted into the lower portions of the movable cavities, the side wall of the box body is provided with driving mechanisms corresponding to the thermal insulation split walls, the driving mechanisms drive the upper adjusting plates and the lower adjusting plates, and a control box for controlling the driving mechanisms is mounted on theouter wall of the box body. Therefore, temperature interpenetration of high-low temperature areas is avoided, and the use ratio of the experiment box is increased.

Description

technical field [0001] The present disclosure generally relates to experimental equipment, in particular to a high and low temperature impact test box. Background technique [0002] The high and low temperature impact test chamber can be used to test the degree to which materials or composite materials can withstand the continuous environment of extremely high temperature and extremely low temperature in an instant, and to test the chemical changes or physical damage caused by thermal expansion and contraction in the shortest time. Its test objects can also be electronic and electrical components, automation components, communication components, electronic chips, auto parts, PCB substrates, metals, chemical materials, polymer materials, plastics, etc. High and low temperature impact test chambers are widely used in defense industry, aerospace and household appliances industry and other fields. [0003] At present, the common high and low temperature impact test chambers are...

AI Technical Summary

Problems solved by technology

The lifting and lowering of the sample rack is detected by installing a travel switch on the control track of the motor. The disadvantage of the long-term use of the travel switch often occurs, and the cabinet will be deformed when it is serious.

In addition, the lifting process of the sample rack takes 5-8 seconds. During this process, there will be temperature interpenetration between the high temperature zone and the low temperature zone, which will cause serious impacts when the temperature changes suddenly.

The control instruments of the high and low temperature impact test chambers all have the disadvantages of cumbersome and complicated operations and low control accuracy, which have brought a lot of inconvenience to customers in terms of test accuracy and use.

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