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Flywheel body

A flywheel and hub technology, applied in the field of the flywheel body, can solve the problems that the axial assembly accuracy can only be guaranteed manually, the assembly efficiency and the axial assembly accuracy are low, and the fixed connection process is omitted, the design and processing are convenient, and the assembly is avoided. effect of error

Active Publication Date: 2020-11-20
LUOYANG BEARING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, when the spokes and the hub, and the spokes and the rim are connected and assembled by fasteners, the axial assembly accuracy of the spokes and the hub, and the spokes and the rim can only be guaranteed manually, and there are problems of low assembly efficiency and axial assembly accuracy. question

Method used

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Examples

Experimental program
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Effect test

specific Embodiment 1

[0048] like figure 1 , Figure 4 and Figure 5 As shown, the flywheel body includes a rim 1 , spokes 2 and a hub 3 , five spokes 2 are provided, and the five spokes 2 are evenly spaced along the circumference of the rim 1 . One end of each spoke 2 is positioned and matched with the wheel hub 3 along the axial direction of the flywheel body and fixedly connected with the wheel hub 3; It is assembled together with the axial positioning of the hub 3.

[0049] Specifically, such as figure 1 , Figure 4 , Figure 7 and Figure 8 As shown, the spoke 2 is I-shaped as a whole, including the spoke main body 21 and the connecting plates arranged at both ends of the spoke main body 21, the connecting plate fixedly connected with the hub 3 is the hub connecting plate 23, and the connecting plate fixedly connected with the wheel rim 1 Be the rim connecting plate 22. The two connecting plates and the spoke main body 21 are of an integral structure, and both of the two connecting plate...

specific Embodiment 2

[0058] The main difference between it and Embodiment 1 is that the hub positioning groove in the above Embodiment 1 is surrounded by two pairs of hub positioning blocks and the hub, so that the hub positioning groove has two openings. In this embodiment, the radially outer side of the hub is provided with a U-shaped block, the U-shaped block and the hub form a hub positioning groove, and the U-shaped opening faces the circumferential side of the hub to form the opening of the hub positioning groove, that is, the hub positioning groove only has an opening.

specific Embodiment 3

[0060] The main difference between it and Embodiment 1 is that the rim positioning groove in the above embodiment 1 is surrounded by two pairs of rim positioning blocks and the rim, so that the rim positioning groove has two openings. In this embodiment, a U-shaped block is arranged on the radially outer side of the rim, and the U-shaped block and the rim form a rim positioning groove, and the U-shaped opening faces the circumferential side of the rim to form the opening of the rim positioning groove, that is, The rim positioning groove has only one opening. At this time, in order to realize the fixed connection between the pre-assembled body and the rim, the openings of each rim positioning groove should face the same side of the rim in the circumferential direction.

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Abstract

The invention relates to a flywheel body. The flywheel body comprises a hub, spokes and a rim, wherein the spokes are connected between the hub and the rim, the hub and / or the rim are / is fixedly connected with the corresponding ends of the spokes through fasteners, the hub and / or the spokes are / is made of damping materials so as to reduce the vibration acceleration of the rim, positioning groovesare formed in the hub and / or the rim, positioning heads are arranged at the ends of the spokes, or positioning heads are arranged on the hub and / or the rim, positioning grooves are formed in the endsof the spokes, the positioning heads are mounted in the positioning grooves and are in positioning fit with the positioning grooves along the axial direction of the flywheel body, the groove bottoms of the positioning grooves and the side surfaces of the corresponding positioning heads are arc-shaped surfaces, the rotation center lines of the arc-shaped surfaces coincide with the axis of the flywheel body, an opening is formed in at least one side of the positioning groove in the circumferential direction, an avoiding space is formed in the opening side, and the spokes are arranged in the rimin the axial direction of the flywheel body through the avoiding space so that the positioning heads can be rotationally arranged in the corresponding positioning groove through the opening. Accordingto the flywheel body, the axial assembly precision of the flywheel body can be improved.

Description

technical field [0001] The invention relates to a flywheel body. Background technique [0002] The flywheel body is the inertial execution part in the spacecraft attitude control system. The flywheel body will inevitably resonate during the satellite launch process, which will impose a large load on the flywheel body and bearings, which may cause spoke breakage and bearing damage. If it is not desired to increase the size of the bearing and flywheel body, the vibration amplification factor of the outer side when the flywheel body vibrates must be reduced. [0003] In order to reduce the vibration amplification factor of the flywheel body, an unloading device or a damping device is usually added to the flywheel body. The former uses an elastic limit unloading device on the wheel rim to reduce the resonance load on the spokes and bearing parts during the resonance process; The latter adopts damping devices on the spokes or rims, such as the flywheel body disclosed in the inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/30
CPCF16F15/30
Inventor 张致远张振潮杨虎谢鹏飞铁晓艳李彦徐俊柴灵芝郑向凯渠书文杨林
Owner LUOYANG BEARING RES INST CO LTD
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