Test piece rotation driving device for centrifugal overload test of solid rocket engine

Abstract

The invention relates to the field of centrifugal experiments. The invention particularly discloses a test piece rotation driving device for a centrifugal overload test of a solid rocket engine. The device comprises a mounting bottom plate and a driving motor, the output end of the driving motor is connected with a ball screw nut pair, a first guide rail is arranged on the mounting bottom plate along the ball screw nut pair, a first sliding block is arranged on the first guide rail, a screw nut of the ball screw nut pair is connected with the first sliding block, and a moving seat is arrangedon the first sliding block. The device further comprises a rocker arm, a second guide rail is arranged on the rocker arm along the rocker arm, a rotating seat is slidably arranged on the second guiderail, and a rotating shaft is arranged on the rotating seat and rotationally connected with the moving seat. The driving device has the advantages that a speed reducer, the screw nut pair, the rockerarm and the like in the driving device are of labor-saving structures, and large torque can be provided; the driving device is controlled by a servo motor, driven by the ball screw nut pair and guidedby a guide rail sliding block pair, and full-closed-loop control is realized by an encoder, so that the whole system has very high control precision.

Description

technical field [0001] The invention relates to the field of centrifugal experiments, in particular to a specimen rotating drive device for centrifugal overload tests of solid rocket motors. Background technique [0002] With the substantial increase in flight speed, acceleration and rapid acceleration of solid rockets, especially the high lateral overload of rockets during high-acceleration and high-maneuvering flight, more complex physical and chemical changes will occur in the fuel and flow fields in the engines. , which will seriously affect the stability of the engine operation. In order to study the change law of the engine flow field under complex working conditions such as high overload, the Chinese patent No. CN201510262648.0 discloses a solid rocket motor centrifugal overload test system. [0003] In order to simulate the high overload of the solid rocket motor under different postures during operation, the Chinese patent No. CN201510262339.3 discloses a mounting ...

AI Technical Summary

Problems solved by technology

At the same time, due to the angle of the lateral overload of the specimen and the gradient of the centrifugal acceleration generated by the centrifuge overload system, a large eccentric moment will also be generated

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