Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for repairing driven spiral bevel gear assembly of BP-14 main speed reducer

A technology of spiral bevel gear, BP-14, applied in metal processing machinery parts, manufacturing tools, positioning devices, etc., can solve the problems of long repair cycle and high repair cost

Active Publication Date: 2021-04-27
成都国营锦江机器厂
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a repair method for the driven spiral bevel gear assembly of the BP-14 final drive, which is used to solve the problem of the driven spiral bevel gear assembly of the BP-14 final drive in the prior art. Technical problems with high repair costs and long repair cycles

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The repair method of driven spiral bevel gear assembly of BP-14 main reducer includes the following steps:

[0032] Step 1: Decompose driven spiral bevel gear assemblies that can satisfy a repair interval for different units with gear disc or tapered shaft faults;

[0033] Step 2: After disassembly, install the qualified gear plate and the tapered shaft to form a new driven spiral bevel gear assembly;

[0034] Step 3: After checking that the pitch circle of the new driven spiral bevel gear assembly formed by the installation meets the requirements for the runout of the pitch circle relative to the axis of the tapered shaft, respectively insure the 18 bolts and 18 positioning pins.

[0035] When this embodiment is used, for the driven spiral bevel gear assembly of the BP-14 type main reducer, the 7272.1350 tapered shaft Ф260mm bearing raceway is severely peeled off and other faults occur, and it cannot be used continuously. During the repair process in the prior art, the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for repairing a driven spiral bevel gear assembly of a BP-14 main speed reducer, and belongs to the technical field of helicopter repair. The method for repairing the driven spiral bevel gear assembly of the BP-14 main speed reducer comprises the following steps that driven spiral bevel gear assemblies which have gear disc or conical shaft faults separately and can meet a repair interval in different stages are decomposed; after disassembly, a gear disc and a conical shaft which are inspected to be qualified are combined and installed to form a new driven spiral bevel gear assembly; and after it is checked that jumping of a fluted disc reference circle of the new driven spiral bevel gear assembly formed through installation relative to the axis of the conical shaft meets the requirement, 18 bolts and 18 positioning pins are subjected to three safety steps correspondingly. According to the method for repairing the driven spiral bevel gear assembly of the BP14 main speed reducer, after driven spiral bevel gears with different gear disc or conical shaft faults are decomposed, the intact gear disc and conical shaft are recombined and installed to form a new driven spiral bevel gear, replacing is replaced by repairing, the part replacing cost after the driven spiral bevel gear breaks down is saved, the repairing process is not limited by aviation material purchasing, the repair period is shortened, and the repair cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of repairing helicopters, and relates to a method for repairing a main reducer, in particular to a method for repairing a driven spiral bevel gear assembly of a BP-14 main reducer. Background technique [0002] The BP-14 main reducer is prone to pitting and peeling of the tooth surfaces of the main and driven spiral bevel gears, or it is returned to the factory due to metal shavings failure. At the same time, during the repair of the BP-14 main reducer, it was found that the driven spiral bevel gear assembly 7272.1350 tapered shaft Ф260mm bearing raceway was seriously peeled off and other faults, so it could not continue to be used. In the previous repair process, the driven spiral bevel gear assembly 7272.1350 and the driving spiral bevel gear 7272.0286 were repaired according to the "Fault Inspection and Repair of the Final Drive" M17XGY06-041 process regulations for these pitted and peeled driven spiral b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00B23Q3/06
CPCB23P6/00B23Q3/062
Inventor 陈海牛刘骅卓伟伟罗真应陈林冯强冯伟郑炯晏福祥王李军
Owner 成都国营锦江机器厂