CN202592311U - Bush dismounting device - Google Patents

Bush dismounting device Download PDF

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Publication number
CN202592311U
CN202592311U CN 201220155739 CN201220155739U CN202592311U CN 202592311 U CN202592311 U CN 202592311U CN 201220155739 CN201220155739 CN 201220155739 CN 201220155739 U CN201220155739 U CN 201220155739U CN 202592311 U CN202592311 U CN 202592311U
Authority
CN
China
Prior art keywords
lining
bearing pin
bush
diameter
optical axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220155739
Other languages
Chinese (zh)
Inventor
杨东彪
林钢
敬伟
韩雪峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harbin Aircraft Industry Group Co Ltd
Original Assignee
Harbin Aircraft Industry Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harbin Aircraft Industry Group Co Ltd filed Critical Harbin Aircraft Industry Group Co Ltd
Priority to CN 201220155739 priority Critical patent/CN202592311U/en
Application granted granted Critical
Publication of CN202592311U publication Critical patent/CN202592311U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model belongs to the mechanical assembly technique and relates to a bush dismounting device for dismounting a bush on a workpiece. The device is characterized by being composed of a hinge pin (3), a gasket (4) and a nut (5), wherein the hinge pin (3) is a step shaft with an upper threaded section and a lower optical axis section, a radial protruding shoulder is arranged at the lower end of the optical axis section, the outer diameter of the radial protruding shoulder is smaller than that of a to-be-dismounted bush (2) and larger than the inner diameter of the to-be-dismounted bush (2), and the inner diameter of the gasket (4) is larger than the outer diameter of the to-be-dismounted bush (2). According to the dismounting device, the bush on the workpiece can be dismounted conveniently, damage to the inner wall of a mounting hole is avoided, and the assembling precision of a new arranged bush is guaranteed.

Description

A kind of lining dismounting device
Technical field
The utility model belongs to mechanical assembly technique, relates to the lining dismounting device of lining on a kind of removal workpiece.
Background technology
The operation of lining is the difficult problem in producing always on the removal workpiece; Because the lining of the removal of wanting and the installing hole on the workpiece are interference fit; Operator's removal lining is very easy to break the hole inwall, influences the precision of installing hole and then influences the assembly precision of new mounting bush.
Summary of the invention
The purpose of the utility model is: a kind of lining dismounting device of the lining of removal easily is provided, to prevent to break the inwall of installing hole, guarantees the assembly precision of new mounting bush.
The technical scheme of the utility model is: a kind of lining dismounting device is characterized in that it is made up of bearing pin 3, packing ring 4 and nut 5; Bearing pin 3 is step axles, and the epimere of bearing pin 3 is diameter thread segments less than hypomere, and nut 5 meshes with the thread segment of bearing pin 3; The hypomere of bearing pin 3 is optical axis sections; The external diameter of this optical axis section be installed in the endoporus matched in clearance of treating removal lining 2 on the workpiece 1, the length of this optical axis section is not more than the length of treating removal lining 2, in the lower end of optical axis section radially convex shoulder is arranged; This radially the external diameter of convex shoulder greater than the internal diameter of treating removal lining 2 and less than the external diameter of treating removal lining 2; The internal diameter of packing ring 4 is greater than the external diameter of treating removal lining 2, and the thickness of packing ring 4 is greater than the length of treating removal lining 2, and the length of bearing pin 3 is greater than the length sum of treating removal lining 2 and packing ring 4.
The utility model has the advantages that: the lining on the removal workpiece easily, avoided breaking the inwall of installing hole, guaranteed the assembly precision of new mounting bush.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The specific embodiment
Explain further details in the face of the utility model down.Referring to Fig. 1, a kind of lining dismounting device is characterized in that, it is made up of bearing pin 3, packing ring 4 and nut 5; Bearing pin 3 is step axles, and the epimere of bearing pin 3 is diameter thread segments less than hypomere, and nut 5 meshes with the thread segment of bearing pin 3; The hypomere of bearing pin 3 is optical axis sections; The external diameter of this optical axis section be installed in the endoporus matched in clearance of treating removal lining 2 on the workpiece 1, the length of this optical axis section is not more than the length of treating removal lining 2, in the lower end of optical axis section radially convex shoulder is arranged; This radially the external diameter of convex shoulder greater than the internal diameter of treating removal lining 2 and less than the external diameter of treating removal lining 2; The internal diameter of packing ring 4 is greater than the external diameter of treating removal lining 2, and the thickness of packing ring 4 is greater than the length of treating removal lining 2, and the length of bearing pin 3 is greater than the length sum of treating removal lining 2 and packing ring 4.
Bearing pin 3 is followed rotation in order to prevent to rotate nut 5, and the radially convex shoulder of said bearing pin 3 lower ends has outer four directions or outer six sides.When rotation nut 5, block with the radially convex shoulder of spanner simultaneously bearing pin 3 lower ends, just successfully removal is treated removal lining 2.
Embodiment: certain boring is led tool in use, because variation has taken place in the aperture of its institute's converted products, the diameter of bore of former lining is less than needing the product processed aperture, so need the original lining of dismounting now.The diameter of bore of former lining is Φ 5mm, and outside dimension is Φ 12mm, and length is 12mm, and therefore the convex shoulder external diameter with the bearing pin lower end is processed as Φ 10mm, and the length of bearing pin optical axis section is processed as 20mm, and the length of bearing pin is processed as 40mm.The internal diameter of packing ring is processed as 15mm, and the thickness of packing ring is processed as 20mm.Then bearing pin is penetrated lining endoporus, packing ring, nut from the lining lower end, the convex shoulder of nut rotation being tightened rear pin shaft just can block lining, and removal lining successfully.

Claims (2)

1. a lining dismounting device is characterized in that, it is made up of bearing pin [3], packing ring [4] and nut [5]; Bearing pin [3] is a step axle; The epimere of bearing pin [3] is the thread segment of diameter less than hypomere; The thread segment engagement of nut [5] and bearing pin [3], the hypomere of bearing pin [3] is the optical axis section, the external diameter of this optical axis section be installed in the endoporus matched in clearance of treating removal lining [2] on the workpiece [1]; The length of this optical axis section is not more than the length of treating removal lining [2]; In the lower end of optical axis section radially convex shoulder is arranged, radially the external diameter of convex shoulder is greater than the internal diameter of treating removal lining [2] and less than the external diameter of treating removal lining [2] for this, and the internal diameter of packing ring [4] is greater than the external diameter of treating removal lining [2]; The thickness of packing ring [4] is greater than the length of treating removal lining [2], and the length of bearing pin [3] is greater than the length sum of treating removal lining [2] and packing ring [4].
2. lining dismounting device according to claim 1 is characterized in that, the radially convex shoulder of said bearing pin [3] lower end has outer four directions or outer six sides.
CN 201220155739 2012-04-13 2012-04-13 Bush dismounting device Expired - Fee Related CN202592311U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220155739 CN202592311U (en) 2012-04-13 2012-04-13 Bush dismounting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220155739 CN202592311U (en) 2012-04-13 2012-04-13 Bush dismounting device

Publications (1)

Publication Number Publication Date
CN202592311U true CN202592311U (en) 2012-12-12

Family

ID=47309895

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220155739 Expired - Fee Related CN202592311U (en) 2012-04-13 2012-04-13 Bush dismounting device

Country Status (1)

Country Link
CN (1) CN202592311U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104760020A (en) * 2015-04-13 2015-07-08 中国航空工业集团公司沈阳飞机设计研究所 Detachment and installation device for close fit part and detachment and installation method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104760020A (en) * 2015-04-13 2015-07-08 中国航空工业集团公司沈阳飞机设计研究所 Detachment and installation device for close fit part and detachment and installation method

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121212

Termination date: 20180413

CF01 Termination of patent right due to non-payment of annual fee