Engine case and bolt locking device thereof

A technology of anti-loosening and bolts, which is applied in the direction of engine components, machines/engines, bolts, etc., can solve the problem of the stop washer 92 being difficult to bend, and achieve the effect of ensuring quality and preventing detachment

Pending Publication Date: 2021-05-04
AECC COMML AIRCRAFT ENGINE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the inventors have found that the bending of the stop washer 92 requires an open space. For narrow and limited spaces, such as t

Method used

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  • Engine case and bolt locking device thereof
  • Engine case and bolt locking device thereof
  • Engine case and bolt locking device thereof

Examples

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Example Embodiment

[0028] A variety of different implementations or examples for implementing the described subject technical solutions are disclosed below. In order to simplify the disclosure, the following describes the specific examples of each element and arrangement, and of course, these are only examples, and are not intended to limit the protection scope of the present application. For example, the description that the first feature described later in the description is formed on or above the second feature may include an embodiment in which the first and second features are formed through direct contact, and may also include an embodiment in which the first and second features are formed between the first and second features. Embodiments of additional features such that there may be no direct relationship between the first and second features. Additionally, reference numerals and / or letters may be repeated in different instances in these disclosures. This repetition is for brevity and c...

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PUM

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Abstract

One purpose of the invention is to provide a bolt locking device, so that a bolt can be locked in a narrow space. The other purpose of the invention is to provide an engine case which is provided with the bolt locking device. In order to achieve the purpose, the bolt locking device comprises a supporting unit and an anti-loosening unit. The supporting unit is provided with a unit body, the unit body is provided with a plurality of through holes which allow a screw portion of the bolt to pass through and are smaller than the outer diameter of a bolt head, a boss portion is arranged on the upper surface of the unit body in a protruding manner, and a limiting portion and a convex shoulder are formed on the boss portion. The anti-loosening unit is provided with a plurality of anti-loosening holes, each anti-loosening hole is in a shape matched with the peripheral contour of the bolt head, and an opening allowing the limiting part to penetrate through is formed in the anti-loosening unit, wherein the limiting part penetrates through the opening, so that the anti-loosening unit is supported on the convex shoulder, and the movement of the anti-loosening unit in the height direction is limited by bending the limiting part.

Description

technical field [0001] The invention relates to a bolt anti-loosening device. Background technique [0002] like figure 1 The hex bolt 91 shown in is a common part for mounting flange connections in aero-engines. In order to prevent the bolts from loosening, angled vertical single-ear stop washers 92 are often used to prevent them from loosening. As shown in the figure, a stop washer 92 is placed between the hex bolt 91 and the connecting part for locking. When locking, the two claws 93 of the stop washer 92 are bent into a vertical shape and close to the two adjacent sides of the head of the hexagonal bolt 91, and the claws 93 of the stop washer 92 are bent and close to the flange of the part installation side inside or outside. [0003] However, the inventors have found that the bending of the stop washer 92 requires an open space. For narrow and limited spaces, such as the flange connection in the inner cavity, especially the flange connection in the deep cavity, the ...

Claims

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Application Information

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IPC IPC(8): F16B39/24F01D25/24
CPCF16B39/24F01D25/243
Inventor 胡一廷陈静荣杨波李明
Owner AECC COMML AIRCRAFT ENGINE CO LTD
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