CN203009221U - Piston rod component with locking device - Google Patents
Piston rod component with locking device Download PDFInfo
- Publication number
- CN203009221U CN203009221U CN 201220646873 CN201220646873U CN203009221U CN 203009221 U CN203009221 U CN 203009221U CN 201220646873 CN201220646873 CN 201220646873 CN 201220646873 U CN201220646873 U CN 201220646873U CN 203009221 U CN203009221 U CN 203009221U
- Authority
- CN
- China
- Prior art keywords
- piston rod
- piston
- nut
- locking
- component
- 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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- Compressor (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a piston rod component with a locking device. The piston rod component with the locking device comprises a piston rod (1), a piston component (2) and a first locknut (6), wherein the piston component (2) is sheathed with a working rod of the piston rod (1); the first locknut (6) is in threaded connection with the upper end of the piston rod (1); the piston component (2) is locked onto the piston rod (1) through a castellated nut (3) and a spacer pin (4) which is vertical to the piston rod (1); and the piston rod (1) between the piston component (2) and the castellated nut (3) is provided with a second locknut (5). The second locknut is additionally arranged between the piston component and the castellated nut to form a double-nut structure. According to the double-nut structure formed by the castellated nut and the second locknut, the piston component is effectively prevented from becoming looseness on the piston rod, and the phenomenon that the spacer pin is broken is avoided occurring.
Description
Technical field
The utility model relates to the air compressor technical field, is specifically related to a kind of piston rod part with locking device.
Background technique
As shown in Figure 2, traditional air compressor piston-rod parts are comprised of piston rod 1, piston element 2, slotted nut 3, position limit pin 4 and the first locking nut 6.Piston element 2 is sleeved on the working beam of piston rod 1, and locks by slotted nut 3 with perpendicular to the position limit pin 4 of piston rod 1.The first locking nut 6 is threaded with the upper end of piston rod 1.In use find, the retaining performance of slotted nut 3 and position limit pin 4 is bad, and piston element 2 loosening phenomenon occurs on piston rod 1 happens occasionally, and even also the situation that position limit pin 4 fractures can occur.
The model utility content
The purpose of this utility model is to provide a kind of piston rod part that prevents that piston element from becoming flexible on piston rod.
The technological scheme that the utility model adopts is: a kind of piston rod part with locking device, the first locking nut that comprises piston rod, is sleeved on piston element on the piston rod working beam, is threaded with the piston rod upper end, described piston element is locked on piston rod by slotted nut with perpendicular to the position limit pin of piston rod, and key is: be provided with the second locking nut on the piston rod between described piston element and slotted nut.
Be preferably, described piston element is provided with annular groove near an end of the second locking nut, in described annular groove, packing ring is housed, and described the second locking nut is pressed on packing ring.
The beneficial effects of the utility model: by set up the second locking nut between piston element and slotted nut, the double nuts structure that is consisted of by slotted nut and the second locking nut, prevented that effectively piston element from occuring loosening on piston rod, and avoided the fracture generation of phenomenon of position limit pin.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation before improving.
Embodiment
Now by reference to the accompanying drawings the utility model is described in further detail:
The piston rod part with locking device as shown in Figure 1 is by piston rod 1, piston element 2, slotted nut 3, position limit pin 4, the second locking nut 5 be comprised of the second locking nut 5.Piston element 2 is sleeved on the working beam of piston rod 1, and the first locking nut 6 is threaded with the upper end of piston rod 1, and position limit pin 4 is perpendicular to piston rod 1, and position limit pin 4 vertically passes piston rod 1 and is stuck in the groove of slotted nut 3.Piston element 2 is locked on piston rod 1 by slotted nut 3 with perpendicular to the position limit pin 4 of piston rod 1, is provided with the second locking nut 5 on the piston rod 1 between piston element 2 and slotted nut 3.
During assembling, the thread surface of slotted nut 3 and the second locking nut 5 scribbles resistant to elevated temperatures thread locking agent, and then locking.
Claims (3)
1. piston rod part with locking device, comprise piston rod (1), be sleeved on the piston element (2) on piston rod (1) working beam, the first locking nut (6) that is threaded with piston rod (1) upper end, described piston element (2) is locked on piston rod (1) by slotted nut (3) with perpendicular to the position limit pin (4) of piston rod (1), it is characterized in that: be provided with the second locking nut (5) on the piston rod (1) between described piston element (2) and slotted nut (3).
2. according to the piston rod part with locking device claimed in claim 1, it is characterized in that: the end that described piston element (2) is stated nut (5) by the second locking is provided with annular groove (2a), packing ring (6) is housed in described annular groove (2a), and described the second locking nut (5) is pressed on packing ring (6).
3. according to the piston rod part with locking device claimed in claim 1, it is characterized in that: the thread surface of described slotted nut (3) and the second locking nut (5) scribbles resistant to elevated temperatures thread locking agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646873 CN203009221U (en) | 2012-11-29 | 2012-11-29 | Piston rod component with locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220646873 CN203009221U (en) | 2012-11-29 | 2012-11-29 | Piston rod component with locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009221U true CN203009221U (en) | 2013-06-19 |
Family
ID=48600822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220646873 Expired - Fee Related CN203009221U (en) | 2012-11-29 | 2012-11-29 | Piston rod component with locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009221U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953526A (en) * | 2014-05-05 | 2014-07-30 | 王敏 | Piston of air compressor |
| CN104197973A (en) * | 2014-08-17 | 2014-12-10 | 成都国光电子仪表有限责任公司 | Easy-to-install sealing piece for fuel gas test terminal outgoing line hole |
-
2012
- 2012-11-29 CN CN 201220646873 patent/CN203009221U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953526A (en) * | 2014-05-05 | 2014-07-30 | 王敏 | Piston of air compressor |
| CN104197973A (en) * | 2014-08-17 | 2014-12-10 | 成都国光电子仪表有限责任公司 | Easy-to-install sealing piece for fuel gas test terminal outgoing line hole |
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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: 20130619 Termination date: 20141129 |
|
| EXPY | Termination of patent right or utility model |