CN203796701U - Pin bolt - Google Patents
Pin bolt Download PDFInfo
- Publication number
- CN203796701U CN203796701U CN201420178478.9U CN201420178478U CN203796701U CN 203796701 U CN203796701 U CN 203796701U CN 201420178478 U CN201420178478 U CN 201420178478U CN 203796701 U CN203796701 U CN 203796701U
- Authority
- CN
- China
- Prior art keywords
- pin
- rod
- pin rod
- expansion
- plunger
- 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
Links
Landscapes
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
The utility model discloses a pin bolt. According to key points of the technical scheme, the pin bolt comprises a pin head and a pin rod which are formed integrally, wherein the pin rod is cylindrical; a plurality of circular grooves are formed in the outer surface of the pin rod; the circular grooves are filled with expansion rings; the expansion rings are flush with the outer surface of the pin rod; the pin rod is made of a stainless steel material; the expansion rings are made of aluminum; a shaft hole is formed in the other end, corresponding to the pin head, of the pin rod and extends from one end of the pin rod to one side of the pin head in the axial direction; an expansion rod is placed in the shaft hole and is made of aluminum. The pin bolt is applicable to firm mounting and fixing in a high-temperature occasion.
Description
Technical field
The utility model relates to technical field of fastening, is specifically related to a kind of pin.
Background technique
In prior art, pin is generally by plunger and a pin rod class fastening piece dimerous, its structure is simpler, for connecting two with the part of mounting hole, and pin is in the market generally all only for fixation, in some special applications, such as being applied in the pin of some high temperature occasions, because pin of the prior art is all made by stainless steel material, pin is at high temperature heated and has slight expansion, at high temperature produce a power of deviating from mounting hole, time one is long, pin is at high temperature easily jumped out in mounting hole, cause fixing firm not, there is hidden danger.
Model utility content
The deficiency existing for prior art, the utility model provides a kind of installation that is applicable to high temperature occasion to fix and the pin of fixation.
For achieving the above object, the utility model provides following technological scheme: a kind of pin, comprise integrated plunger and pin rod, it is cylindric that pin rod is, on the outer surface of pin rod, be provided with some annular grooves, in annular groove, be filled with expanding ring, expanding ring is mutually concordant with pin rod outer surface, pin rod is made by stainless steel material, expanding ring is made of aluminum, on the other end of the corresponding plunger of pin rod, offers axis hole, and axis hole extends to plunger one side vertically from one end of pin rod, in axis hole, be filled with expansion rod, expansion rod is made of aluminum.
By adopting technique scheme, when installing fixedly, can be by knocking plunger, columned pin rod is knocked into installing in mounting hole fixing, owing to offering annular groove on the outer surface of pin rod, in annular groove, fill expanding ring, expanding ring is mutually concordant with pin rod outer surface, the installation that does not affect pin rod is fixed, because pin rod is made by stainless steel material, guarantee the structural strength of pin rod, the thermal expansion coefficient of stainless steel material be 1.210 five powers/degree Celsius, and expanding ring is made of aluminum, the thermal expansion coefficient of aluminum material be 2.410 five powers/degree Celsius, the thermal expansion coefficient of hence one can see that aluminum material is 2 times of stainless steel material nearly, therefore when this pin is used under high temperature occasion, when pin rod self at high temperature has slight expansion, it is more severe than pin rod that expanding ring at high temperature expands, can pin rod be firmly stuck in mounting hole, avoid pin rod directly in mounting hole, to jump out under high temperature action, and on pin rod, offer axis hole, in axis hole, fill expansion rod, at high temperature, it is more severe than pin rod equally that expansion rod expands, the expansion rod that is positioned at the corresponding plunger the other end of pin rod at high temperature can be by slight the strutting of pin rod, further guarantee that pin rod can not deviate from when hot operation in mounting hole, guarantee that it installs fixing reliability.
The utility model is further set to, and the length of pin-and-hole is 2/3rds of pin rod length.
By adopting technique scheme, because plunger is positioned at outside mounting hole, the other end of the corresponding plunger of pin rod is positioned at mounting hole, now the expansion rod in pin-and-hole expand by pin rod slight strut time, can pin rod be firmly fixed in mounting hole, the length of pin-and-hole is 2/3rds of pin rod length, guarantees that its expansion coordinates and fixation is more reliable.
The utility model is further set to, expansion rod and axis hole interference fit.
By adopting technique scheme, expansion rod and axis hole interference fit, guarantee the fixing reliable of expansion rod and pin-and-hole on the one hand, guarantees that on the other hand expansion rod can be by slight the strutting of pin rod under high temperature action.
The utility model is further set to, and is provided with internal thread in pin-and-hole, is provided with outside thread with matching on expansion rod.
By adopting technique scheme, pin rod is threaded in pin-and-hole by outside thread, guarantees being connected and fixed reliably between expansion rod and pin-and-hole.
The utility model is further set to, and some annular grooves are evenly distributed on pin rod vertically.
By adopting technique scheme, some annular grooves are evenly distributed on pin rod vertically, make stressed more even after expanding ring expanded by heating.
The utility model is further set to, and is provided with friction line on the side of plunger.
By adopting technique scheme, on the side of plunger, be provided with friction line, in the time of in pin rod is arranged on mounting hole, when if pin rod need to be extracted, can with the plunger of friction line, pin rod be extracted by clamping, friction line has effectively strengthened its friction factor, stressed more reliable.
Compared with prior art, the utility model has the advantage of: when this pin is used under high temperature occasion, when pin rod self at high temperature has slight expansion, it is more severe than pin rod that expanding ring at high temperature expands, can pin rod be firmly stuck in mounting hole, avoid pin rod directly in mounting hole, to jump out under high temperature action, and on pin rod, offer axis hole, in axis hole, fill expansion rod, at high temperature, it is more severe than pin rod equally that expansion rod expands, the expansion rod that is positioned at the corresponding plunger the other end of pin rod at high temperature can be by slight the strutting of pin rod, further guarantee that pin rod can not deviate from when hot operation in mounting hole, guarantee that it installs fixing reliability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model pin;
Fig. 2 is the structural representation of the utility model pin rod.
Reference character: 1, plunger; 2, pin rod; 21, annular groove; 22, axis hole; 3, expanding ring; 4, expansion rod.
Embodiment
Referring to figs. 1 through Fig. 2, the utility model pin embodiment is described further.
A kind of pin, comprise integrated plunger 1 and pin rod 2, pin rod 2 is cylindric, on the outer surface of pin rod 2, be provided with some annular grooves 21, in annular groove 21, be filled with expanding ring 3, expanding ring 3 is mutually concordant with pin rod 2 outer surfaces, pin rod 2 is made by stainless steel material, expanding ring 3 is made of aluminum, on the other end of the corresponding plunger 1 of pin rod 2, offer axis hole 22, axis hole 22 extends to plunger 1 one sides vertically from one end of pin rod 2, in axis hole 22, be filled with expansion rod 4, expansion rod 4 is made of aluminum, when installing fixedly, can be by knocking plunger 1, columned pin rod 2 is knocked into installing in mounting hole fixing, owing to offering annular groove 21 on the outer surface at pin rod 2, the interior filling expanding ring 3 of annular groove 21, expanding ring 3 is mutually concordant with pin rod 2 outer surfaces, the installation that does not affect pin rod 2 is fixed, because pin rod 2 is made by stainless steel material, guarantee the structural strength of pin rod 2, the thermal expansion coefficient of stainless steel material be 1.210 five powers/degree Celsius, and expanding ring 3 is made of aluminum, the thermal expansion coefficient of aluminum material be 2.410 five powers/degree Celsius, the thermal expansion coefficient of hence one can see that aluminum material is 2 times of stainless steel material nearly, therefore when this pin is used under high temperature occasion, when pin rod 2 self at high temperature has slight expansion, it is more severe than pin rod 2 that expanding ring 3 at high temperature expands, can pin rod 2 be firmly stuck in mounting hole, avoid pin rod 2 directly in mounting hole, to jump out under high temperature action, and on pin rod 2, offer axis hole 22, the interior filling expansion rod 4 of axis hole 22, at high temperature, expansion rod 4 expand equally than pin rod 2 severities, the expansion rod 4 that is positioned at corresponding plunger 1 the other end of pin rod 2 at high temperature can be by slight the strutting of pin rod 2, further guarantee that pin rod 2 can not deviate from when hot operation in mounting hole, guarantee that it installs fixing reliability, preferably, some annular grooves 21 are evenly distributed on pin rod 2 vertically, make stressed more even after expanding ring 3 expanded by heating.
Preferably, the length of pin-and-hole is 2/3rds of pin rod 2 length, because plunger 1 is positioned at outside mounting hole, the other end of the corresponding plunger 1 of pin rod 2 is positioned at mounting hole, now the expansion rod in pin-and-hole 4 expand by pin rod 2 slight strut time, pin rod 2 firmly can be fixed in mounting hole, the length of pin-and-hole is 2/3rds of pin rod 2 length, guarantees that its expansion coordinates and fixation is more reliable.
As a kind of mode of execution of the present utility model, expansion rod 4 and axis hole 22 interference fit, guarantee that expansion rod 4 is reliable with fixing of pin-and-hole on the one hand, guarantees that on the other hand expansion rod 4 can be by slight the strutting of pin rod 2 under high temperature action.
As another kind of mode of execution of the present utility model, in pin-and-hole, be provided with internal thread, on expansion rod 4, be provided with outside thread with matching, pin rod 2 is threaded in pin-and-hole by outside thread, guarantees being connected and fixed reliably between expansion rod 4 and pin-and-hole.
Further, on the side of plunger 1, be provided with friction line, when pin rod 2 is arranged in mounting hole, when if pin rod 2 need to be extracted, can with the plunger 1 of friction line, pin rod 2 be extracted by clamping, friction line has effectively strengthened its friction factor, stressed more reliable.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technological schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. a pin, comprise integrated plunger and pin rod, described pin rod is cylindric, is provided with some annular grooves on the outer surface of pin rod, in described annular groove, be filled with expanding ring, expanding ring is mutually concordant with pin rod outer surface, and described pin rod is made by stainless steel material, and described expanding ring is made of aluminum, on the other end of the corresponding plunger of described pin rod, offer axis hole, described axis hole extends to plunger one side vertically from one end of pin rod, in described axis hole, is filled with expansion rod, and described expansion rod is made of aluminum.
2. pin according to claim 1, is characterized in that: the length of described pin-and-hole is 2/3rds of pin rod length.
3. pin according to claim 2, is characterized in that: described expansion rod and axis hole interference fit.
4. pin according to claim 2, is characterized in that: in described pin-and-hole, be provided with internal thread, be provided with outside thread with matching on described expansion rod.
5. according to the pin described in claim 3 or 4, it is characterized in that: described some annular grooves are evenly distributed on pin rod vertically.
6. pin according to claim 5, is characterized in that: on the side of described plunger, be provided with friction line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420178478.9U CN203796701U (en) | 2014-04-14 | 2014-04-14 | Pin bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420178478.9U CN203796701U (en) | 2014-04-14 | 2014-04-14 | Pin bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796701U true CN203796701U (en) | 2014-08-27 |
Family
ID=51378915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420178478.9U Expired - Fee Related CN203796701U (en) | 2014-04-14 | 2014-04-14 | Pin bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796701U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630883A (en) * | 2016-07-18 | 2018-01-26 | 天津市天龙得冷成型部件有限公司 | The injection alignment pin of stable connection |
-
2014
- 2014-04-14 CN CN201420178478.9U patent/CN203796701U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630883A (en) * | 2016-07-18 | 2018-01-26 | 天津市天龙得冷成型部件有限公司 | The injection alignment pin of stable connection |
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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 |
Granted publication date: 20140827 Termination date: 20150414 |
|
| EXPY | Termination of patent right or utility model |