CN203784277U - Stroke-adjustable pneumatic piston rod - Google Patents
Stroke-adjustable pneumatic piston rod Download PDFInfo
- Publication number
- CN203784277U CN203784277U CN201420172262.1U CN201420172262U CN203784277U CN 203784277 U CN203784277 U CN 203784277U CN 201420172262 U CN201420172262 U CN 201420172262U CN 203784277 U CN203784277 U CN 203784277U
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- CN
- China
- Prior art keywords
- piston rod
- stroke
- nut
- pneumatic piston
- adjustable pneumatic
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- 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 relates to a stroke-adjustable pneumatic piston rod. Most of existing stroke-adjustable pneumatic piston rods are designed for mounting air cylinders, adjustment of the stroke of the piston rods is inconvenient in the working process, and the piston rods bear impact force difficultly and are damaged on the pneumatic occasion. According to the stroke-adjustable pneumatic piston rod, one end of the piston rod is provided with threads, a nut is screwed and combined on the threads, and a rubber pad is arranged on the piston rod in a sleeved mode and is located between the nut and an air cylinder. The nut can adjust the movement stroke of the piston rod, when the piston rod moves rapidly, and the rubber pad can absorb the impact force of the nut and the air cylinder, so that the stroke-adjustable pneumatic piston rod can meet requirements of working conditions of reciprocating impact, and guarantee reliability of work and the service life of all parts.
Description
Technical field
The utility model relates to the annex of cylinder, relates in particular to a kind of pneumatic piston rod of adjustable stroke.
Background technique
At present the cylinder of adjustable length or the piston rod of oil hydraulic cylinder are mainly used for compensating cylinder or oil hydraulic cylinder the mismatch error in connection procedure being installed or being used for extending working life of cylinder.As documents 1(CN 202834040 U, 2013-03-27, Fig. 2) disclosed a kind of piston rod length adjustment device, be mainly the rod seal deficiency in order to solve adjustable length, the problem that piston rod easily rotates; From Fig. 2 of documents 1, this piston rod controlling device, except solving the problem of its proposition, remains a kind of in order to adapt to the different length adjustment devices of occasion being installed and arrange, is not easy to regulate in the course of the work length.
Documents 2(CN 202708050 U for another example, 2013-01-30, Fig. 1) a kind of piston rod is disclosed, piston rod (1) is emptied, insert the adjustable lever (3) that a spiral coordinates, utilize nut (2) and and piston rod (1) [now piston rod (1) can be considered as nut] jointly form pairs of anti-loose nut structure, adjustable lever (3) is locked in to adjusted position.The piston rod of documents 2 is adjusted to after a length, transform to another length time, to unclamp nut (2) and and piston rod (1), very inconvenient.And the piston rod of documents 2 can not bear external impacts in the process of work, be difficult to meet the application requirements of this class high-speed motion of cylinder and moment braking.
Model utility content
First object of the present utility model is to propose a kind of pneumatic piston rod of adjustable stroke, makes cylinder can regulate easily in the course of the work its stroke.
Second object of the present utility model is to propose a kind of pneumatic piston rod of adjustable stroke, makes the cylinder power that can withstand shocks.
In order to reach above-mentioned purpose, the technical solution of the utility model is:
A pneumatic piston rod for adjustable stroke, one end of piston rod has screw thread, and nut screws on described screw thread, and rubber pad is enclosed within on piston rod and between nut and cylinder.
In another embodiment, screwing of nut and piston rod was to win to screw.
In another embodiment, nut material is than screw rod material softer.
In another embodiment, nut has annular knurl.
The beneficial effects of the utility model are: the movement travel that nut can regulating piston bar, piston rod is in the time moving rapidly, rubber pad can absorb the impact force of nut and cylinder, make the utility model cylinder can be suitable for the working condition requirement of reciprocating impact, ensured the reliability of work and the life-span of each component.
Brief description of the drawings
Fig. 1 is the utility model embodiment's schematic perspective view;
Fig. 2 is the schematic diagram that the utility model embodiment is adjusted to L1 stroke;
Fig. 3 is the schematic diagram that the utility model embodiment is adjusted to L2 stroke.
Label declaration:
Cylinder 10 piston rod 20 screw thread 21 rubber pad 30 nuts 40.
Embodiment
As shown in Figure 1, in the present embodiment, piston rod 20 is enclosed within cylinder 10, can in cylinder 10, move back and forth.Piston rod 20 is manufactured by steel, one end of piston rod 20 has screw thread 21, one aluminum alloy nut 40 processed screws on screw thread 21, screwing of nut 40 and screw thread 21 is to adopt interference fit, aluminum alloy nut 40 screws behind a certain position of steel piston bar 20 under the effect of interference fit, and nut 40 endoporus expand, obvolvent piston rod 20, producing certain frictional force, that nut 40 is difficult for is loosening, the stroke the regulating change that is difficult for meeting accident.Rubber pad 30 is enclosed within on piston rod 20 and between nut 40 and cylinder 10, in the time that piston rod 20 moves backward rapidly, drives nut 40 and rubber pad 30 blow cylinders 10, and rubber pad 30 can impact-absorbing, protection nut 40 and piston rod 20.
As Fig. 2, rubber pad 30 is the stroke of piston rod 20 to the distance L 1 of cylinder 10 end faces.In the time needing the stroke of regulating piston bar 20, only need by diagram rotating nut 40, the evolution of nut 40 is to reposition shown in Fig. 3, and distance L 1 becomes L2, completes stroke adjustment.
Claims (4)
1. a pneumatic piston rod for adjustable stroke, is characterized in that: one end of piston rod has screw thread, and nut screws on described screw thread, and rubber pad is enclosed within on piston rod and between nut and cylinder.
2. the pneumatic piston rod of a kind of adjustable stroke claimed in claim 1, is characterized in that: in another embodiment, screwing of nut and piston rod was to win to screw.
3. the pneumatic piston rod of a kind of adjustable stroke described in claim 1 or 2, is characterized in that: nut material is than screw rod material softer.
4. the pneumatic piston rod of a kind of adjustable stroke claimed in claim 1, is characterized in that: nut has annular knurl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420172262.1U CN203784277U (en) | 2014-04-11 | 2014-04-11 | Stroke-adjustable pneumatic piston rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420172262.1U CN203784277U (en) | 2014-04-11 | 2014-04-11 | Stroke-adjustable pneumatic piston rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203784277U true CN203784277U (en) | 2014-08-20 |
Family
ID=51320466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420172262.1U Expired - Fee Related CN203784277U (en) | 2014-04-11 | 2014-04-11 | Stroke-adjustable pneumatic piston rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203784277U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692309A (en) * | 2015-03-02 | 2015-06-10 | 侯如升 | Objective table push component of pneumatic filling machine |
| CN104806601A (en) * | 2015-04-22 | 2015-07-29 | 中意凯盛（蚌埠）玻璃冷端机械有限公司 | Stroke regulating device with double-piston-rod air cylinder |
-
2014
- 2014-04-11 CN CN201420172262.1U patent/CN203784277U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692309A (en) * | 2015-03-02 | 2015-06-10 | 侯如升 | Objective table push component of pneumatic filling machine |
| CN104806601A (en) * | 2015-04-22 | 2015-07-29 | 中意凯盛（蚌埠）玻璃冷端机械有限公司 | Stroke regulating device with double-piston-rod air cylinder |
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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: 20140820 Termination date: 20160411 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |