CN104385219A

CN104385219A - Disassembling device for sealing component

Info

Publication number: CN104385219A
Application number: CN201410752752.3A
Authority: CN
Inventors: 魏巍
Original assignee: AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
Current assignee: Jincheng Nanjing Electromechanical Hydraulic Pressure Engineering Research Center Aviation Industry Corp of China; AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems
Priority date: 2014-12-10
Filing date: 2014-12-10
Publication date: 2015-03-04

Abstract

The invention discloses a device special for disassembling a sealing component in a maintenance process of a turbine cooler of a certain type. The device is a puller with a thin-walled structure and capable of forming and transmitting tensile force. The device aims to improve the disassembling efficiency of the sealing component of the turbine cooler of the type and increase the reusability of the part, and the waste condition that the component cannot be disassembled and reutilized due to the fact of excessive interference value between the sealing component and a bearing sleeve can be avoided; the limitations of excessive interference value between the sealing component and the bearing sleeve and smaller usable disassembling space are overcome; the working principle is that outer thin-walled expansion pieces are expanded by virtue of an embedded expansion rod and the tensile force is transferred by virtue of a threaded structure of a brushing and the three expansion pieces, the device is a puller of a special structure, the maintenance cycle of the turbine cooler can be effectively shortened, the utilization rate of the part can be increased, and the production cost can be greatly lowered.

Description

A kind of provision for disengagement for black box

Technical field

The present invention is the special purpose device for dismantling certain type cooling turbine unit black box.

Background technology

What certain type cooling turbine unit adopted is the hermetical structure of black box, it is the tight fit of interference between the overcoat of black box and bearing holder (housing, cover), the graphite-seal ring of black box is for reaching oil sealing effect and disc fits tightly, space between black box and axle is very narrow and small, and this brings certain difficulty in dismounting link to it.As shown in Figure 2.

In earlier stage, when carrying out the maintenance of this type turbine series products, be limited to the small space of black box and axle, usually because black box is without decomposing or taking the way of destructive decomposition and cause spare part to be scrapped or damage, thus greatly improve maintenance cost, extend maintenance cycle, cause the discontented of client.

Summary of the invention

The object of the invention is to design a kind of special black box provision for disengagement, in the maintenance process of this type cooling turbine unit, decompose black box by special purpose device, change the maintenance mode that destructive dismounting or assembly are in the past scrapped.

For a provision for disengagement for black box, it is characterized in that: comprise embedded expander roll, three points of expansion sets, lining and dwang four parts, embedded expander roll is head is empty thin wall-type round bar with flat square toes, inner chamber; Three points of expansion set top is with internal thread, middle part with external screw thread, and lower end is with swollen of three lobe thin wall-type; Lining is the female cushion cover of band; Dwang is the handle of lining.

Advantageous Effects: the provision for disengagement of this type black box, the risk that can effectively save damage parts or scrap, effectively can promote maintenance efficiency, reduces maintenance cost.

Accompanying drawing explanation

Fig. 1 is the structural representation of certain black box provision for disengagement;

Wherein, 1 is embedded expansion set, and 2 is three points of expansion sets, and 3 is lining, and 4 is dwang.

Fig. 2 is the operating diagram of black box provision for disengagement;

Wherein, 5 is black box, and 6 is bearing holder (housing, cover), and 7 is axle, and 8 is disc.

Detailed description of the invention

Below in conjunction with Figure of description, the present invention is described in further detail, refer to Figure of description 1,2.When carrying out the dismantlement work of black box, provision for disengagement is made to pass the axle 7 of cooling turbine unit, fall within the disc 8 of cooling turbine unit, by the be threaded form of embedded expansion set 1 with three points of expansion sets 2, twist embedded expansion set 1 in three points of expansion sets 2, after swollen of three lobes of distending three points of expansion sets 2, the step 10 of three points of expansion set heads is made to block the step 9 of black box 5 firmly, again by the be threaded form of lining 3 with three points of expansion sets 2, dwang 4 drives lining 3 to provide pulling force upwards to three points of expansion sets 3, thus completes the dismantlement work of black box.

Claims

1. the provision for disengagement for black box, it is characterized in that: comprise embedded expander roll (1), three points of expansion sets (2), lining (3) and dwang (4) four parts, embedded expander roll (1) is head is empty thin wall-type round bar with flat square toes, inner chamber; Three points of expansion set (2) top is with internal thread, middle part with external screw thread, and lower end is with swollen of three lobe thin wall-type; Lining (3) is the female cushion cover of band; Dwang (4) is the handle of lining (3).