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A Combined Shaft Structure Based on Wedge Key Connection

A rotating shaft structure and combined technology, applied in the direction of couplings, rigid shaft couplings, mechanical equipment, etc., can solve the problems of excessive heat conduction capacity and high structural temperature

Active Publication Date: 2019-01-08
BEIJING LINJIN SPACE AIRCRAFT SYST ENG INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Carbon-carbon composite materials have excellent heat resistance and load-carrying capacity, but their high thermal conductivity will lead to excessively high temperature of the structure matched with it

Method used

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  • A Combined Shaft Structure Based on Wedge Key Connection
  • A Combined Shaft Structure Based on Wedge Key Connection
  • A Combined Shaft Structure Based on Wedge Key Connection

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] The present invention is a combined shaft structure based on wedge key connection, such as figure 1 As shown, it includes a carbon-carbon shaft 1, a pressure ring 2, two wedge keys 3, a connecting screw 4, a metal shaft 5, a first washer 6, a first lock nut 7, a second washer 8, and a second lock Tighten the nut 9.

[0023] Such as figure 2 with image 3 As shown, the carbon-carbon rotating shaft 1 is made of carbon-carbon composite material and has a cylindrical platform structure. The diameter of the upper part of the cylindrical platform is larger than the diameter of the lower part. Cooperate; the outer wall of the lower part of the cylindrical pedestal is provided with two concave planes at a distance of 180 degrees along the circumferential direction, that is, the mating surface 101, and the mating surface 101 cooperates with the wedge ...

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Abstract

The invention provides a combined type revolving shaft structure based on the wedged key connection. The structure comprises a carbon-carbon revolving shaft, multiple wedged keys, a metal revolving shaft, a connecting screw rod, a first gasket, a first locking nut, a second gasket and a second locking nut; the connecting screw rod passes through a carbon-carbon revolving shaft connecting hole and a metal revolving shaft connecting hole, the first gasket and the first locking nut are sequentially installed at the upper end of the connecting screw rod, the second gasket and the second locking nut are sequentially installed at the lower end of the connecting screw rod, and axial force is applied to cooperation of wedged key oblique planes and a metal revolving shaft oblique plane by screwing up the first locking nut and the second locking nut, so that the wedged keys are locked, and the rotation is achieved. According to the structure, the wedged key structure is adopted, the gapless connection of the carbon-carbon revolving shaft and the metal revolving shaft is achieved through axial pre-tightening, the excellent heat resistance and carrying capacity of carbon-carbon composite materials and the high temperature resistance and low heat conduction capability of high-temperature alloy materials are utilized, the revolving shaft structure is guaranteed, and meanwhile the high temperature resistance and low heat conduction performance are achieved.

Description

technical field [0001] The invention relates to a combined rotating shaft structure, in particular to a combined rotating shaft structure based on wedge key connection. Background technique [0002] Carbon-carbon composite materials have excellent heat resistance and load-carrying capacity, but their high thermal conductivity will lead to excessively high temperature of the structure matched with it. Superalloy materials have high temperature resistance and low thermal conductivity. In order to make comprehensive use of the properties of the two materials, a wedge key structure is used to realize the connection of the rotating shafts of the two materials, so as to ensure that the rotating shaft has high temperature resistance and low thermal conductivity at the same time. Contents of the invention [0003] The purpose of the present invention is to provide a combined shaft structure based on wedge connection, which not only has high temperature resistance performance, but...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D1/04F16D1/033
Inventor 杨浩韩旭高扬王宗伟吴宏伟常志鹏田震
Owner BEIJING LINJIN SPACE AIRCRAFT SYST ENG INST
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