Repair method for dimension recovery of transfer lining of accessory drive gearbox

A size restoration and accessory transmission technology, which is applied to transmission boxes, transmission parts, belts/chains/gears, etc., can solve problems such as bushing wear, and achieve the effects of improving safety, reducing the probability of occurrence, and improving utilization

Inactive Publication Date: 2016-02-03
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a repair method for restoring the size of the adapter bushing of the accessory transmission gearbox, to solve the problem of the wear of the lower bushing of the accessory transmission gearbox, to restore its matching value for larger sizes, to make full use of thermal spraying, and to break through the previous titanium Small-scale plating and restoration of complex alloy parts, achieving large size growth in worn parts, and fully ensuring the bonding force between the sprayed coating and the substrate

Method used

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  • Repair method for dimension recovery of transfer lining of accessory drive gearbox
  • Repair method for dimension recovery of transfer lining of accessory drive gearbox
  • Repair method for dimension recovery of transfer lining of accessory drive gearbox

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Embodiment Construction

[0018] In the specific implementation process, with the continuous increase of the service life of the parts, the wear failure of the lower bearing bush of a certain series of accessory drive gearboxes has intensified, and the failure of joint surface wear and leakage of lubricating oil has occurred continuously, endangering the safety of use. In order to solve the wear problem of the lower bearing bush, the thermal spraying process is used to spray nickel-aluminum coating on the worn part. The biggest feature of the present invention is that the larger size can be recovered and grown at the worn parts through the spraying process, and the coating can be guaranteed to be consistent with the wear parts. For the bonding force of the substrate, the thermal spraying in the past is a targeted coating and plating, but the size of the plating used to restore the size is not enough to repair the bushing.

[0019] Such as figure 2 As shown, the supplementary processing size requiremen...

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Abstract

The invention relates to the field of accessory drive gearboxes, in particular to a repair method for dimension recovery of a transfer lining of an accessory drive gearbox. The repair method is characterized in that a part is repaired by adopting a method of spraying a nickel-aluminum coating with plasmas, and the repair method is directly applied to gear box spigot positioning. A thermal spraying process is adopted to spray the nickel-aluminum coating on a worn part of a lower bearing lining, so that relatively large dimension recovery increase is realized on the worn part, and binding force between the coating and a base body is guaranteed. Makeup processing dimensions of the worn part of the lower bearing lining are that phi 55.6mm-phi55.7mm is a radial machine processing dimension, and 11.6mm is axial processing length. The lower bearing lining repaired by the repair method is adopted to completely achieve original matching dimension requirements, so that a working condition that the originally-structured lower bearing lining wears continuously is greatly improved, and the utilization rate of the original lower bearing lining is increased, and therefore, the safety in use is improved, and great hidden danger is avoided and reduced.

Description

technical field [0001] The invention relates to the field of accessory transmission gearboxes, in particular to a repair method for restoring the size of the adapter bushing of the accessory transmission gearbox. The method of repairing parts by plasma spraying nickel-aluminum coating is directly applied to the positioning of the notch of the gearbox body. Background technique [0002] The role of the accessory drive gearbox is to transmit the rotary motion from the main drive shaft to the accessories of the accessory drive system and to fix the accessories. The accessory transmission gearbox is the carrier for installing the engine accessories, the smoothness and reliability of its transmission determines the normal operation of all accessories, [0003] The accessory transmission gearbox is installed on the main transmission shaft transmission casing, and two mounting lugs are installed at both ends of the transmission casing for fixing. Such as Figure 1(a)-Figure 1(b) A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/02
CPCF16H57/02F16H2057/02017F16H2057/02026
Inventor 王志哲赵铁军王凯
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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