CN204828335U - Novel bloated round pin and extracting tool thereof - Google Patents
Novel bloated round pin and extracting tool thereof Download PDFInfo
- Publication number
- CN204828335U CN204828335U CN201520266428.0U CN201520266428U CN204828335U CN 204828335 U CN204828335 U CN 204828335U CN 201520266428 U CN201520266428 U CN 201520266428U CN 204828335 U CN204828335 U CN 204828335U
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- CN
- China
- Prior art keywords
- block
- epicone
- locking screw
- shell
- expansion pin
- 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
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Abstract
The utility model discloses a novel bloated round pin and extracting tool thereof, including shell, locking screw, cushion, epicone piece and awl piece down, the hole of shell includes the conical bore that two sections tips link to each other, is provided with the screw hole that corresponds with locking screw down in the awl piece, head end that epicone piece and awl piece down are located the shell hole respectively and tail end and with this conical bore cooperation, the cushion setting is in the outside of epicone piece, locking screw's tail end is connected with awl piece down, locking screw's head end passes epicone piece and cushion setting in the bloated outside of selling to it is fixed with the cushion through lock nut. The utility model discloses an expand locking screw, epicone piece and the cooperation between the awl piece down of round pin center make the keying of expanding construct under initial condition and be clearance fit between the cotter hole, are screwing up the back, bloated sell and the cotter hole between become interference fit by clearance fit, seamless connection between the part of the required connection of realization that can be comparatively convenient for two can be carried out reliable, accurate, transmitting movement effectively between the connecting piece.
Description
Technical field
The utility model relates to a kind of expansion pin, particularly relates to a kind of novel expansion pin and the extracting tool thereof that can realize seamless link between two driving parts.
Background technique
At present, that commonly uses comprises bolt connection, interference connection and pin connection etc. with the linkage structure realizing power transmission between two parts.Connect for bolt, Assembly And Disassembly is comparatively loaded down with trivial details, and the size of transmitting torque is relatively limited; Connect for interference, it can bear larger load, but this linkage structure exists assembling and dismantles comparatively loaded down with trivial details problem, greatly reduces working efficiency; Connect for common pin, when transmitting shearing force, owing to usually there is gap between pin and hole, therefore, it is steady not and accurate that it transmits motion, and may there is shock during to-and-fro motion.
Model utility content
The purpose of this utility model is just to provide to solve the problem a kind of novel expansion pin that can switch between Spielpassung and interference fit and extracting tool thereof.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of novel expansion pin, comprise shell, locking screw, cushion block, epicone block and lower cone block, the endoporus of described shell comprises the connected conical bore of two sections of small ends, the two ends of described locking screw are provided with outside thread, the middle part of described locking screw is provided with ledge structure, the tapped hole corresponding with described locking screw is provided with in described lower cone block, described epicone block and described lower cone block lay respectively at the head end of described shell endoporus and tail end and coordinate with this conical bore, described cushion block is arranged on the outside of described epicone block, the tail end of described locking screw is connected with described lower cone block, it is outside that the head end of described locking screw is arranged on described expansion pin through the through hole of described epicone block and described cushion block, and fixed by locking nut and described cushion block.
Further, described expansion pin also comprises the first circlip and the second circlip, described epicone block is fixed on the head end of described shell endoporus by described first circlip and carries out axial limiting, and described lower cone block is fixed on the tail end of described shell endoporus by described second circlip and carries out axial limiting.
Preferably, described locking nut is double nuts structure, then can realize the function applying pretightening force and loosen simultaneously.
Particularly, the diameter in the middle part of described shell endoporus is less than the diameter at its two ends.
Particularly, the diameter of the through hole on described epicone block and described cushion block is greater than the diameter of described locking screw.
Internal thread is not provided with in the through hole of i.e. described epicone block and described cushion block.
For the ease of the dismounting of above-mentioned novel expansion pin, the utility model provides a kind of extracting tool of novel expansion pin, comprise ejection tool and socket head screw, the head end end contact of the shell of described ejection tool and described a kind of novel expansion pin, described socket head screw is connected with the epicone block of described a kind of novel expansion pin through the through hole on described ejection tool.
The beneficial effects of the utility model are:
The novel expansion pin of the utility model and extracting tool thereof are by the lock screw of expansion pin central position, the cooperation between epicone block and lower cone block, making expansion pin structure in an initial condition and between pin hole is Spielpassung, after tightening, interference fit is become by Spielpassung between expansion pin and pin hole, conveniently can realize the seamless link between the required part connected, make can carry out between two connected pieces reliably, accurately, effectively transmitting motion.
Accompanying drawing explanation
Fig. 1 is the plan view of a kind of novel expansion pin described in the utility model;
Fig. 2 is the plan view of the extracting tool of a kind of novel expansion pin described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, a kind of novel expansion pin of the utility model, comprise shell 6, locking screw 1, cushion block 3, epicone block 5, lower cone block 7, first circlip 4 and the second circlip 8, the endoporus of shell 6 comprises the connected conical bore of two sections of small ends, diameter in the middle part of shell 6 endoporus is less than the diameter at its two ends, the two ends of locking screw 1 are provided with outside thread, the middle part of locking screw 1 is provided with ledge structure, the tapped hole corresponding with locking screw 1 is provided with in lower cone block 7, epicone block 5 is fixed on the head end of shell 6 endoporus by the first circlip 4 and carries out axial limiting, lower cone block 7 is fixed on the tail end of shell 6 endoporus by the second circlip 8 and carries out axial limiting, cushion block 3 is arranged on the outside of epicone block 5, the tail end of locking screw 1 is connected with lower cone block 7, the head end of locking screw 1 is arranged on expansion pin outside through the through hole of epicone block 5 and cushion block 3, and fixed by locking nut 2 and cushion block 3, the diameter of the through hole on epicone block 5 and cushion block 3 is greater than the diameter of locking screw 1, locking nut 2 is double nuts structure.
As shown in Figure 2, a kind of extracting tool of novel expansion pin, comprise ejection tool 9 and socket head screw 10, the head end end contact of the shell 6 of ejection tool 9 and a kind of novel expansion pin, socket head screw 10 is connected with a kind of epicone block 5 of novel expansion pin through the through hole on ejection tool 9.
The working principle of a kind of novel expansion pin of the utility model and extracting tool thereof is as follows:
When needs connect, expansion pin is inserted in expansion pin hole, twist locking jack panel clockwise again, pretightening force is applied between epicone block 5 and lower cone block 7, epicone block 5 and lower cone block 7 are all moved to the endoporus middle-end of shell 6, thus make shell 6 outwards elastic expansion, become interference fit by Spielpassung between expansion pin and pin-and-hole, to realize the accurate transmission between two connected pieces.
When needs are dismantled, unclamp and exit locking nut 2, be rotated counterclockwise locking screw 1, ledge structure in the middle part of locking screw 1 contacts with epicone block 5, and apply rightabout active force between epicone block 5 and lower cone block 7, epicone block 5 and lower cone block 7 are moved respectively to the two ends of shell 6 endoporus, thus make epicone block 5, depart between lower cone block 7 and shell 6, the elastic expansion of shell 6 is made to return to original state, thus make to become Spielpassung by interference fit between expansion pin and pin-and-hole, to realize the dismounting of expansion pin.
In addition, if lower cone block 7 does not depart from shell 6, then first cushion block 3, first circlip 4 and epicone block 5 are taken out successively, knock lower cone block 7 vertically, then lower cone block 7 can be made to depart from shell 6.
If epicone block 5 does not depart from shell 6, then need the extracting tool using expansion pin, its principle is as follows:
Locking nut 2, cushion block 3 and the first circlip 4 are taken out successively, and ejection tool 9 is arranged on the head end of shell 6 by socket head screw 10, turn clockwise socket head screw 10, throws off, thus take out expansion pin smoothly by between epicone block 5 and shell 6.
The technical solution of the utility model is not limited to the restriction of above-mentioned specific embodiment, and every technology distortion made according to the technical solution of the utility model, all falls within protection domain of the present utility model.
Claims (6)
1. a novel expansion pin, it is characterized in that: comprise shell, locking screw, cushion block, epicone block and lower cone block, the endoporus of described shell comprises the connected conical bore of two sections of small ends, the two ends of described locking screw are provided with outside thread, the middle part of described locking screw is provided with ledge structure, the tapped hole corresponding with described locking screw is provided with in described lower cone block, described epicone block and described lower cone block lay respectively at the head end of described shell endoporus and tail end and coordinate with this conical bore, described cushion block is arranged on the outside of described epicone block, the tail end of described locking screw is connected with described lower cone block, it is outside that the head end of described locking screw is arranged on described expansion pin through the through hole of described epicone block and described cushion block, and fixed by locking nut and described cushion block.
2. the novel expansion pin of one according to claim 1, it is characterized in that: also comprise the first circlip and the second circlip, described epicone block is fixed on the head end of described shell endoporus by described first circlip and carries out axial limiting, and described lower cone block is fixed on the tail end of described shell endoporus by described second circlip and carries out axial limiting.
3. the novel expansion pin of one according to claim 1, is characterized in that: described locking nut is double nuts structure.
4. the novel expansion pin of one according to claim 1, is characterized in that: the diameter in the middle part of described shell endoporus is less than the diameter at its two ends.
5. the novel expansion pin of one according to claim 1, is characterized in that: the diameter of the through hole on described epicone block and described cushion block is greater than the diameter of described locking screw.
6. the extracting tool of a novel expansion pin, it is characterized in that: comprise ejection tool and socket head screw, the head end end contact of the shell of described ejection tool and described novel expansion pin according to claim 1, described socket head screw is connected with the shell of novel expansion pin according to claim 1 through the through hole on described ejection tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520266428.0U CN204828335U (en) | 2015-04-28 | 2015-04-28 | Novel bloated round pin and extracting tool thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520266428.0U CN204828335U (en) | 2015-04-28 | 2015-04-28 | Novel bloated round pin and extracting tool thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204828335U true CN204828335U (en) | 2015-12-02 |
Family
ID=54685940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520266428.0U Expired - Fee Related CN204828335U (en) | 2015-04-28 | 2015-04-28 | Novel bloated round pin and extracting tool thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204828335U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806648A (en) * | 2015-04-28 | 2015-07-29 | 中国工程物理研究院总体工程研究所 | Novel expansion pin |
-
2015
- 2015-04-28 CN CN201520266428.0U patent/CN204828335U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806648A (en) * | 2015-04-28 | 2015-07-29 | 中国工程物理研究院总体工程研究所 | Novel expansion pin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20180428 |