Rotor test bench support position adjustment and bearing pre-tightening device

Abstract

The invention discloses a support positioning and bearing pre-tightening device for a rotor experiment table. The support positioning and bearing pre-tightening device comprises a shaft. The shaft issleeved with a first linkage sleeve and a second linkage sleeve. The first linkage sleeve and the second linkage sleeve are each in a disc shape and extend forwards to form a conical barrel. The conical barrel of the first linkage sleeve is arranged in the conical barrel of the second linkage sleeve. The conical barrel of the first linkage sleeve is matched with the conical barrel of the second linkage sleeve, and a disc of the first linkage sleeve and a disc of the second linkage sleeve are fixedly connected together. The conical barrel of the second linkage sleeve is sleeved with a ringlikethird linkage sleeve. The third linkage sleeve and the disc of the second linkage sleeve are fixedly connected together. The outer surface of the second linkage sleeve is provided with a thread. A pre-tightening sleeve is screwed on the thread. A bearing is fixedly connected to the outer surface of the third linkage sleeve. The support positioning and bearing pre-tightening device has the beneficial effects that the support position is reasonably arranged, and a bearing is pre-tightened, so that the support outbound force is reduced; vibration of the rotor experiment table is reduced; and working performance of the rotor experiment table and safety achieved in the working state are improved.

Description

technical field [0001] The invention relates to a support position adjustment and bearing pre-tightening device, in particular to a support position adjustment and bearing pre-tightening device of a rotor test bench. Background technique [0002] At present, the design of the aero-engine simulation rotor test bench adopts the criterion of "ensure that there is sufficient margin between the operating speed and the critical speed". and gyro torque, the rolling body of the bearing will deviate from the original position, and the stiffness of the bearing will change significantly, so it is difficult to guarantee the "rotational speed margin" in the design, and the rotational speed of the rotor will be close to the critical rotational speed. The load will be transmitted to the support through the bearing, which will cause the rotor test bench to vibrate violently, causing damage to the rotor test bench and posing a threat to the safety of the operator. Therefore, after installati...

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Problems solved by technology

[0002] At present, the design of the aero-engine simulation rotor test bench adopts the criterion of "ensure that there is sufficient margin between the operating speed and the critical speed". and gyro torque, the rolling body of the bearing will deviate from the original position, and the stiffness of the bearing will change significantly, so it is difficult to guarantee the "rotational speed margin" in the design, and the rotational speed of the rotor will be close to the critical rotational speed. The load will be transmitted to the support through the bearing, which will cause the rotor test bench to vibrate violently, causing damage to the rotor test bench and posing a threat to the safety of the operator. Therefore, after installation, it is necessary to adjust the structural parameters of the test bench so that the working speed and the critical speed There is enough margin to reduce the external force of the support, so it is important to arrange the support position reasonably and improve the stiffness of the bearing under working conditions

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