CN202462345U

CN202462345U - Bush puller for maintaining airplane engine

Info

Publication number: CN202462345U
Application number: CN2012202915976U
Authority: CN
Inventors: 李江
Original assignee: BEIJING AIRCRAFT MAINTENANCE ENGINEERING CO LTD
Current assignee: BEIJING AIRCRAFT MAINTENANCE ENGINEERING CO LTD
Priority date: 2012-06-18
Filing date: 2012-06-18
Publication date: 2012-10-03
Anticipated expiration: 2022-06-18

Abstract

The utility model relates to a bush puller for maintaining an airplane engine, and mainly solves the problems that when the conventional airplane gearbox is maintained, a bearing bush is inconvenient to dismantle, and the casing and the bush are easy to damage. A bush puller is characterized in that two ends of a connector (9) are respectively connected with upper and low pull claws (2 and 10); the upper pull claw (2) is connected with the connector (9) through a rotating shaft (5); the rotating shaft (5) is vertical to the axial line direction of a connecting rod (8); the lower pull claw (10) is fixed with the connector (9) through threads; the upper and the lower pull claws (2 and 10) are connected with each other through a tension spring (3); an ejector rod (4) penetrates through the end part of the lower pull claw (10) and is propped against the upper pull claw (2); and pull claw outer edges (1) are arranged on the outer sides of the end parts of the upper and the lower pull claws (2 and 10). The bush puller has a simple structure, is safe and reliable to use, can dismantle the bearing bush conveniently, doesn't damage other components, and improves the working efficiency.

Description

A kind of lining puller that is used for the aircraft engine maintenance

Technical field

The utility model relates to aerospace field, a kind of specifically lining puller that is used for the aircraft engine maintenance.

Background technology

When the RB211 engine gearbox of repairing, a plurality of bearing inserts that need will be installed on the gear box casing are pulled down, and in the repair manual that producer provided, explanation does not need to use special frock.But in real work, behind the dismounting clamp nut, because the gap that the lining of bearing cooperates with gear box casing is less; The worker can only scratch the firmly lining of bearing by bimanual nail; Perhaps use screwdriver to insert in the slit between bearing insert and the housing and prize, be easy to damage housing and lining, cause unnecessary extra repairing and waste man-hour and equipment; Also can cause personal injury to the worker, operating efficiency is very low.

Summary of the invention

The deficiency of bearing insert dismounting inconvenience, fragile housing and lining when repairing in order to overcome existing aircraft engine gear-box; The utility model provides a kind of lining puller that is used for the aircraft engine maintenance; This lining puller is simple in structure, safe and reliable, can dismantle outer race easily; And can not cause damage, improve operating efficiency other parts.

The technical scheme of the utility model is: a kind of lining puller that is used for the aircraft engine maintenance; Comprise handle; Described handle is fixed through connecting rod and connector, and the two ends of described connector connect upper and lower pulling claw respectively, wherein goes up between pulling claw and the connector to be connected through rotating shaft; Described rotating shaft is vertical with the connecting rod axis direction, and following pulling claw and connector pass through bolt; Connect through extension spring between the described upper and lower pulling claw, and have push rod to pass down the pulling claw end to withstand on the pulling claw; The outside, end of described upper and lower pulling claw is equipped with the pulling claw outer; Be connected with percussion hammer on the described connecting rod, percussion hammer is enclosed within the outside of connecting rod.

The utlity model has following beneficial effect: owing to take such scheme, the outside, upper and lower pulling claw end is provided with the pulling claw outer, and goes up pulling claw and can rotate along rotating shaft; When the dismounting bearing insert; Upper and lower pulling claw is put in the lining, hooks the bush inside lower edge with the pulling claw outer, inciting somebody to action up and down through push rod again, pulling claw withstands; Hold percussion hammer it shaken up and down, thus with lining by extracting on the gear box casing.This puller is simple in structure, and is easy to use, can not cause damage to the parts on the gear-box, also improved the security of operation, improved operating efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is to view along F among Fig. 1.

1-pulling claw outer among the figure, the last pulling claw of 2-, 3-extension spring, 4-push rod, 5-rotating shaft, 6-percussion hammer, 7-handle, 8-connecting rod, 9-connector, pulling claw under the 10-.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described further:

By Fig. 1 and shown in Figure 2; A kind of lining puller that is used for the aircraft engine maintenance comprises handle 7, and described handle 7 is fixing with connector 8 through connecting rod 8; The two ends of described connector 8 connect upper and lower pulling claw (2 respectively; 10), the end outer side of described upper and lower pulling claw (2,10) is equipped with the pulling claw outer 1 of outside protrusion.Wherein go up between pulling claw 2 and the connector 8 and be connected through rotating shaft 5; Described rotating shaft 5 is vertical with connecting rod 8 axis directions; Last pulling claw 2 can rotate along rotating shaft 5, thereby increases or dwindle the distance between pulling claw 2 and the following pulling claw 10, and following pulling claw 10 and connector 8 pass through bolt.Connect through extension spring 3 between the described upper and lower pulling claw (2,10), during extension spring 3 free states with upper and lower pulling claw (2,10) to in-draw, so that the spacing between the pulling claw can adapt to the size of different linings up and down.Push rod 4 passes down pulling claw 10 ends and withstands on the pulling claw 2, is threaded between push rod 4 and the following pulling claw 10, when rotation push rod 4; Can outwards eject going up pulling claw 2; Go up simultaneously pulling

claw

2 and 5 rotate around the shaft, strut between the pulling claw, pulling claw outer 1 is hooked in the inner lower edge of bearing insert thereby make up and down.Be connected with percussion hammer 6 on the described connecting rod 8, percussion hammer 6 is enclosed within the outside of connecting rod 8 and can slides up and down along connecting rod 8, when the dismounting lining, hold letter percussion hammer 6 it shaken up and down, thereby with lining by decomposing on the gear box casing.

Claims

1. one kind is used for the lining puller that aircraft engine keeps in repair; Comprise handle (7), described handle (7) is fixing through connecting rod (8) and connector (8), and it is characterized in that: the two ends of described connector (8) connect upper and lower pulling claw (2 respectively; 10); Wherein go up between pulling claw (2) and the connector (8) and be connected through rotating shaft (5), described rotating shaft (5) is vertical with connecting rod (8) axis direction, and following pulling claw (10) passes through bolt with connector (8); Connect through extension spring (3) between the described upper and lower pulling claw (2,10), and have push rod (4) to pass down pulling claw (10) end to withstand on the pulling claw (2); The outside, end of described upper and lower pulling claw (2,10) is equipped with pulling claw outer (1); Be connected with percussion hammer (6) on the described connecting rod (8), percussion hammer (6) is enclosed within the outside of connecting rod (8).