CN203357371U - Removing device for round pin - Google Patents
Removing device for round pin Download PDFInfo
- Publication number
- CN203357371U CN203357371U CN 201320462376 CN201320462376U CN203357371U CN 203357371 U CN203357371 U CN 203357371U CN 201320462376 CN201320462376 CN 201320462376 CN 201320462376 U CN201320462376 U CN 201320462376U CN 203357371 U CN203357371 U CN 203357371U
- Authority
- CN
- China
- Prior art keywords
- straight pin
- locking nut
- round pin
- bolt
- stop sleeve
- 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 - Lifetime
Links
Abstract
The utility model discloses a removing device for a round pin. The removing device comprises a supporting sleeve, a pulling-out bolt and a locking nut, wherein the supporting sleeve is hollow, and a hollow part can contain the pulled-out round pin; a double-end bolt is adopted as the pulling-out bolt, the length of the pulling-out bolt is greater than the sum of the lengths of the supporting sleeve and the locking nut, the pulling-out bolt passes through the supporting sleeve, one end of the pulling-out bolt is in threaded connection with the locking nut, and the other end of the pulling-out bolt is in threaded connection with a thread hole of the round pin; the supporting sleeve is sleeved with the round pin to be removed, and the locking nut is screwed down, so that the round pin can be removed from an operation end surface through the pulling-out bolt which is in threaded connection with the round pin. The removing device provided by the utility model has the advantages that a thread self-locking principle is utilized, the round pin only bears an axial force when being pulled out, and stresses in all directions are uniform, so that the round pin is convenient to disassemble, and parts are prevented from being damaged; the removing device can be used in working places with small operation moving spaces, the round pins of various specifications can be rapidly and effectively disassembled, and the repairing timeliness of a traction motor is improved.
Description
Technical field
The utility model belongs to the Machining Technology field, is specifically related to a kind of straight pin plucking device that utilizes the screw self-lock mechanism to pull out straight pin.
Background technology
Most of parts in traction electric machine adopt the mode of straight pin accurately to be located by connecting, adopt in two parts of the method location, cylinder pin hole on parts is blind hole, and with coordinating of straight pin be that slight interference coordinates, cylinder pin hole on another parts is through hole, and with coordinating of straight pin be matched in clearance.After two parts part separates, straight pin remains in the cylinder pin hole coordinated with the straight pin slight interference, when these parts are keeped in repair, needs to remove this straight pin.Domestic and international method commonly used is for being used pin removal to be processed at present, and its principle is: adopt the impulsive force of pin removal to take straight pin to be pulled out out of, wherein pin removal adopts the screwed hole connection with being connected of straight pin.But, when straight pin coordinates closely, the impulsive force of pin removal is less than frictional force, so that can not pull out straight pin; Simultaneously, due to the mode of pin removal employing impulsive force, so that the structure of pin removal is longer, larger, is difficult to be operated in narrow space.
Along with the raising that the locomotive Site Service requires, also higher to the maintenance requirement of traction electric machine, the existing mode of pulling pin can not meet carries out maintenance requirement fast and effectively under the complex working condition environment.In order to simplify electrical machmary maintenance, a kind of novel straight pin plucking device is provided, the straight pin of fast pulling out in traction electric machine becomes the technical problem that those skilled in the art need solution badly.
Summary of the invention
In order to overcome the deficiencies in the prior art, the purpose of this utility model aims to provide a kind of straight pin plucking device, utilizes the screw self-lock mechanism to pull out fast the straight pin at the position such as end face straight pin in traction electric machine, and can construct in narrow space.
For achieving the above object, the utility model adopts following technical scheme:
A kind of straight pin plucking device, comprise stop sleeve, trip out bolt, locking nut; Described stop sleeve inside has through hole, can hold the straight pin tripped out; The described bolt that trips out is stud, and length is greater than the length sum of stop sleeve and locking nut, and through stop sleeve, an end is threaded with locking nut, and the other end is threaded with the straight pin screwed hole; Stop sleeve is enclosed within on straight pin to be pulled out, tightens locking nut and by the bolt that trips out be threaded with straight pin, straight pin is pulled out out in operative end surface.
Further, the through hole in described stop sleeve arranges a step surface through hole in stop sleeve is divided into to coaxial two parts with different-diameter; The diameter that contacts an end through hole with operative end surface is greater than the straight pin diameter, and the length of this through hole is greater than straight pin length; Other end through-hole diameter is greater than and trips out the diameter of bolt.
Further, pad is set to strengthen intensity between described locking nut and stop sleeve.
Further, described stop sleeve is column structure, with the operative end surface contact area, is greater than the pin face area.
Further, the described diameter of bolt that trips out is not more than 2/3 of straight pin diameter.
The beneficial effects of the utility model are:
1, for convenience detach: with in prior art, by the impulsive force sub method of pulling pin, compare, straight pin plucking device provided by the utility model, utilize the screw thread self-locking principle, when being extracted, straight pin only is subject to axial force, and all directions are stressed evenly, be convenient to the dismounting of straight pin, and can not cause the damage parts injury; 2, workplace is unrestricted.The utility model can be used in little workplace, operant activity space, effectively dismantles fast the straight pin of all size, has improved the promptness that traction electric machine is reprocessed.
The accompanying drawing explanation
The structural representation that Fig. 1 is utility model;
Wherein: 1-trips out bolt; The 2-locking nut; The 3-pad; The 4-stop sleeve; The 5-straight pin; The 6-operative end surface.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, want to pull out the straight pin 5 in operative end surface 6, this straight pin of wanting to pull out is the threaded pin in center.The straight pin plucking device that the present embodiment provides comprises and trips out bolt 1, locking nut 2 and stop sleeve 4; Described stop sleeve hollow, inside has through hole, and hollow part can hold the straight pin tripped out; The described bolt that trips out is stud, and length is greater than the length sum of stop sleeve and locking nut, and through stop sleeve, an end is threaded with locking nut, and the other end is threaded with the straight pin screwed hole.
Through hole in described stop sleeve arranges a step surface through hole in stop sleeve is divided into to coaxial two parts with different-diameter: contact with operative end surface when an end through hole is used and entangle straight pin, its slightly larger in diameter is in the straight pin diameter, and the length of this through hole is greater than straight pin length; Other end through-hole diameter is slightly larger than and trips out the diameter of bolt.
Pad 3 is set to strengthen intensity between described locking nut and stop sleeve.
Described stop sleeve is column structure, with the workpiece end face contact area, is greater than the pin face area.
The described diameter of bolt that trips out is not more than 2/3 of straight pin diameter.
While using straight pin plucking device described in the utility model, stop sleeve 4 lower ends are enclosed within straight pin by its inner counterbore and expose the operative end surface part, and this counterbore internal diameter is slightly larger than the straight pin external diameter, and bottom and the operative end surface of sleeve fit tightly support.Trip out the bolt lower end and be connected with the straight pin screwed hole, be connected with locking nut through upper end after stop sleeve, pad; Sleeve provides an axial support for locking nut, by tightening locking nut, for tripping out bolt, provides one to trip out axial force, takes straight pin out of cylinder pin hole.
The present embodiment purpose is to make professional and technical personnel in the field to understand the technical solution of the utility model and to be implemented according to it; can not limit with it protection domain of this patent; all distortion of doing according to the utility model disclosure technology; all fall into protection domain of the present utility model, the protection domain of this patent is as the criterion with claims content.
Claims (5)
1. a straight pin plucking device, is characterized in that, comprises stop sleeve, trips out bolt, locking nut; Described stop sleeve inside has through hole, can hold the straight pin tripped out; The described bolt that trips out is stud, and length is greater than the length sum of stop sleeve and locking nut, and through stop sleeve, an end is threaded with locking nut, and the other end is threaded with the straight pin screwed hole; Stop sleeve is enclosed within on straight pin to be pulled out, tightens locking nut and by the bolt that trips out be threaded with straight pin, straight pin is pulled out out in operative end surface.
2. a kind of straight pin plucking device according to claim 1, is characterized in that, the through hole in described stop sleeve arranges a step surface through hole in stop sleeve is divided into to coaxial two parts with different-diameter; The diameter that contacts an end through hole with operative end surface is greater than the straight pin diameter, and the length of this through hole is greater than straight pin length; Other end through-hole diameter is greater than and trips out the diameter of bolt.
3. according to claim 1 or the described a kind of straight pin plucking device of 2 any one, it is characterized in that, pad is set to strengthen intensity between described locking nut and stop sleeve.
4. according to claim 1 or the described a kind of straight pin plucking device of 2 any one, it is characterized in that, described stop sleeve is column structure, with the operative end surface contact area, is greater than the pin face area.
5. according to claim 1 or the described a kind of straight pin plucking device of 2 any one, it is characterized in that, the described diameter of bolt that trips out is not more than 2/3 of straight pin diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320462376 CN203357371U (en) | 2013-07-31 | 2013-07-31 | Removing device for round pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320462376 CN203357371U (en) | 2013-07-31 | 2013-07-31 | Removing device for round pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203357371U true CN203357371U (en) | 2013-12-25 |
Family
ID=49805190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320462376 Expired - Lifetime CN203357371U (en) | 2013-07-31 | 2013-07-31 | Removing device for round pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203357371U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109605279A (en) * | 2019-01-07 | 2019-04-12 | 武汉船用机械有限责任公司 | A kind of pin removal |
| CN112140053A (en) * | 2020-09-29 | 2020-12-29 | 中国航发动力股份有限公司 | Dismounting device of stop pin |
| CN113431890A (en) * | 2021-07-08 | 2021-09-24 | 徐州徐工传动科技有限公司 | Power transmission case, drive device and vehicle |
-
2013
- 2013-07-31 CN CN 201320462376 patent/CN203357371U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109605279A (en) * | 2019-01-07 | 2019-04-12 | 武汉船用机械有限责任公司 | A kind of pin removal |
| CN112140053A (en) * | 2020-09-29 | 2020-12-29 | 中国航发动力股份有限公司 | Dismounting device of stop pin |
| CN113431890A (en) * | 2021-07-08 | 2021-09-24 | 徐州徐工传动科技有限公司 | Power transmission case, drive device and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |