Screw temperature control film clamping device

Abstract

The invention discloses a screw temperature control film clamping device. The film clamping device comprises a left flange and a right flange which are arranged front and back, a driving section is fixed at the left end of the left flange. A driven section is fixed to the right end of the right flange. A membrane I, a membrane clamping ring I, a membrane II and a membrane clamping ring II which horizontally move are sequentially fixed to the central axis between the left flange and the right flange, connecting screws which are evenly distributed are fixed to the position between the left flange and the right flange in the circumferential direction, and symmetrical telescopic oil cylinders are further fixed between the left flange and the right flange. A cavity is formed in the central axisof the connecting screw rod, a heater is installed in the cavity between the left flange and the right flange, a water cooling sleeve is sleeved outside the connecting screw rod at the position corresponding to the heater, and the heater is connected with an external power supply. The film clamping device is simple, efficient and reliable, can provide enough clamping force for diaphragms of shocktunnel type ground test equipment, and is particularly suitable for the conditions that the caliber of a shock tube is large, the pressure is high, the requirement for the clamping force is high, andthe measurement and control requirement for the film clamping position is high.

Description

technical field [0001] The invention belongs to the technical field of hypersonic testing equipment, and in particular relates to a screw temperature-controlled membrane clamping device. Background technique [0002] Pulse-type test equipment such as shock wave wind tunnel is an essential key equipment for ultra-high-speed ground simulation tests. This type of equipment has a common feature: before the test, it is necessary to use a metal diaphragm to divide the shock tube into several pipe sections, and fill different pipe sections with gases of different pressures, and then take measures to rupture the membrane during the test to complete the test. Therefore, it is necessary to design a device to ensure the clamping and sealing of the diaphragm between different pipe sections of the shock tube, which is the clamping mechanism. [0003] Hydraulic cylinder clamping mechanism, cut thread clamping mechanism and full thread clamping mechanism are commonly used clamping mechani...

AI Technical Summary

Problems solved by technology

The thread clamping mechanism has the advantages of compact structure and high connection rigidity, but because the clamping force is generated by the rotation of the thread pair, it is easy to cause thread bite under the condition of large clamping force load

In addition, the clamping components of the threaded clamping mechanism are all located in the rotary nut, which is not conducive to carrying out operations such as inflation and deflation, measurement and control at the clamping position

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