CN104819285A - Piston for pneumatic engine - Google Patents
Piston for pneumatic engine Download PDFInfo
- Publication number
- CN104819285A CN104819285A CN201510134229.9A CN201510134229A CN104819285A CN 104819285 A CN104819285 A CN 104819285A CN 201510134229 A CN201510134229 A CN 201510134229A CN 104819285 A CN104819285 A CN 104819285A
- Authority
- CN
- China
- Prior art keywords
- piston
- air motor
- boss
- hole
- mounting hole
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/01—Pistons; Trunk pistons; Plungers characterised by the use of particular materials
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a piston for a pneumatic engine. The piston comprises an annular piston body (1), wherein a piston rod mounting hole (71) is formed in one end surface of the piston body (1); the central axis of the piston rod mounting hole (71) is overlapped with the central axis of the piston body (1); and the piston body (1) is made of an aluminum alloy. The piston body is made of the aluminum alloy to achieve the effects of excellent rigidity and strength, light weight and good electrical conductivity; and the structure of the piston body enables the installation of a piston rod to be quite convenient and stable.
Description
Technical field
The present invention relates to Pneumatic automobile technical field, particularly, relate to a kind of piston for air motor.
Background technique
In the gas driven generator of Pneumatic automobile, piston is the important component part of air motor, and in the working procedure of air motor, piston is used for bearing gas pressure, and is rotated by piston rod and rack drives gear.Therefore, the requirement of piston is very high:
(1) because piston is ceaselessly subject to cyclic stress effect at work, need there is enough strength and stiffness;
(2) because piston moves back and forth, so piston needs quality little, lightweight, thus the inertial force of piston in movement process is reduced;
(3) good thermal conductivity, absorbs heat from the external world as much as possible after doing work, improve the capacity usage ratio of gas to make high pressure gas expansion.
And a lot of piston does not often reach above-mentioned requirements at present.
Summary of the invention
Object of the present invention is just the shortcoming and defect overcoming above-mentioned prior art, provides the piston for air motor that a kind of intensity is large, quality is light, thermal conductivity is good.
The present invention's adopted technological scheme that solves the problem is:
For the piston of air motor, comprise the piston only of annular, piston only end face offers piston rod mounting hole, the central axis of piston rod mounting hole and the central axes of piston only, described piston only adopts aluminum alloy to make.
As a further improvement on the present invention, the outer peripheral surface of described piston only is arranged with positioning ring, seal ring, magnet ring, positioning ring, seal ring, magnet ring are arranged side by side along the axial direction of piston only, and positioning ring and magnet ring lay respectively at seal ring both sides.
Further, described piston only center offers pin-and-hole, and this pin-and-hole is communicated with piston rod mounting hole.
Further, two end faces of described piston only are respectively provided with a boss, and piston rod mounting hole is arranged on one of them boss center, and another boss center offers positioning hole, and pin-and-hole is all communicated with piston rod mounting hole, positioning hole.
Further, described boss ringwise, the outer peripheral surface of one of them boss is provided with screw thread.
Further, an end face of described piston only offers the first annular groove, another end face offers the second annular groove.
Further, described first annular groove is a step trough, and be made up of the outer groove away from piston only center and the inner groove near piston only center, outer groove is connected with inner groove, and outer groove diameter is greater than inner groove.
To sum up, the invention has the beneficial effects as follows:
1, piston only of the present invention adopts aluminum alloy to make, and has good rigidity, intensity, and lightweight, good conductivity;
2, the structure of piston only of the present invention makes piston rod installation very convenient and stable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Mark and corresponding component title in accompanying drawing: 1-piston only; 2-pin-and-hole; 3-positioning ring; 4-seal ring; 5-magnet ring; 6-boss; 71-piston rod mounting hole; 72-positioning hole; 8-first annular groove; 81-outer groove; 82-inner groove; 9-second annular groove.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the present invention's do, but embodiments of the present invention are not limited thereto.
As shown in Figure 1, for the piston of air motor, comprise the piston only 1 of annular, described piston only 1 adopts aluminum alloy to make.Intensity of aluminum alloy is high, density is little, and the thermal conductivity of aluminium is only second to copper, therefore select aluminum alloy for piston in the present embodiment, experiment proves that the stress suffered by piston in the present embodiment is all less than its yield strength, piston has good rigidity, intensity, and lightweight, good conductivity.
The outer peripheral surface of piston only 1 is arranged with positioning ring 3, seal ring 4, magnet ring 5, positioning ring 3, seal ring 4, magnet ring 5 are arranged side by side along the axial direction of piston only 1, and positioning ring 3 and magnet ring 5 lay respectively at seal ring 4 both sides.Positioning ring 3, for the location between piston and the cylinder barrel of cylinder, is avoided piston to form torsional moment in the course of the work and is produced pull-cylinder phenomena; Seal ring 4, for the sealing of piston and inner wall of cylinder, prevents Leakage Gas.
Piston only 1 center offers pin-and-hole 2.
Two end faces of piston only 1 are respectively provided with an annular boss 6, the central axis of the annular boss 6 of two all with the central axes of piston only 1, one of them boss 6 center is provided with piston rod mounting hole 71, another boss 6 center offers positioning hole 72, pin-and-hole 2 be all communicated with piston rod mounting hole 71, positioning hole 72 and the central axis in three holes all with the central axes of piston only 1.The outer peripheral surface of one of them boss 6 is provided with screw thread.
An end face of described piston only 1 offers the first annular groove 8, another end face offers the second annular groove 9; Described first annular groove 8 is a step trough, and be made up of the outer groove 81 away from piston only 1 center and the inner groove 82 near piston only 1 center, outer groove 81 is connected with inner groove 82, and outer groove 81 diameter is greater than inner groove 82.The internal diameter of the first annular groove 8, second annular groove 9 is all less than the external diameter of boss 6, and boss 6 is positioned at the first annular groove 8 or the second annular groove 9 center.
Aforementioned pin-and-hole 2, boss 6, first annular groove 8, second annular groove 9, piston rod mounting hole 71, positioning hole 72 are for installing piston rod, and said structure makes the easy for installation, stable of piston rod.
Below be only the preferred embodiment of the present invention, protection scope of the present invention be not only confined to above-described embodiment, all technological schemes belonged under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (7)
1. for the piston of air motor, comprise the piston only (1) of annular, piston only (1) end face offers piston rod mounting hole (71), the central axis of piston rod mounting hole (71) and the central axes of piston only (1), it is characterized in that, described piston only (1) adopts aluminum alloy to make.
2. the piston for air motor according to claim 1, it is characterized in that, the outer peripheral surface of described piston only (1) is arranged with positioning ring (3), seal ring (4), magnet ring (5), positioning ring (3), seal ring (4), magnet ring (5) are arranged side by side along the axial direction of piston only (1), and positioning ring (3) and magnet ring (5) lay respectively at seal ring (4) both sides.
3. the piston for air motor according to claim 1 and 2, is characterized in that, described piston only (1) center offers pin-and-hole (2), and this pin-and-hole (2) is communicated with piston rod mounting hole (71).
4. the piston for air motor according to claim 3, it is characterized in that, two end faces of described piston only (1) are respectively provided with a boss (6), piston rod mounting hole (71) is arranged on one of them boss (6) center, another boss (6) center offers positioning hole (72), and pin-and-hole (2) is all communicated with piston rod mounting hole (71), positioning hole (72).
5. the piston for air motor according to claim 4, is characterized in that, described boss (6) ringwise, the outer peripheral surface of one of them boss (6) is provided with screw thread.
6. the piston for air motor according to claim 3, is characterized in that, an end face of described piston only (1) offers the first annular groove (8), another end face offers the second annular groove (9).
7. the piston for air motor according to claim 6, it is characterized in that, described first annular groove (8) is a step trough, be made up of the outer groove (81) away from piston only (1) center and the inner groove (82) near piston only (1) center, outer groove (81) is connected with inner groove (82), and outer groove (81) diameter is greater than inner groove (82).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510134229.9A CN104819285A (en) | 2015-03-26 | 2015-03-26 | Piston for pneumatic engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510134229.9A CN104819285A (en) | 2015-03-26 | 2015-03-26 | Piston for pneumatic engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104819285A true CN104819285A (en) | 2015-08-05 |
Family
ID=53729685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510134229.9A Pending CN104819285A (en) | 2015-03-26 | 2015-03-26 | Piston for pneumatic engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104819285A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109878484A (en) * | 2019-04-02 | 2019-06-14 | 桂林航天工业学院 | A kind of Pneumatic automobile partial pressure equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB227157A (en) * | 1923-09-26 | 1924-12-29 | Wilfrid L Spence | Improvements in or connected with fluid pressure engines, compressors and the like |
| CN2359524Y (en) * | 1998-12-31 | 2000-01-19 | 中国科学院金属研究所 | Double-metal piston for pneumatic mechanism |
| CN2660144Y (en) * | 2003-11-12 | 2004-12-01 | 重庆镁业科技股份有限公司 | Aluminum piston |
| CN101092948A (en) * | 2006-01-24 | 2007-12-26 | 高阳 | Piston type four cycle engine of reciprocating air motor power, electromagnetic repellent force, and inertia force |
| CN102031993A (en) * | 2010-12-30 | 2011-04-27 | 南京理工大学 | Two-stage expansion piston air motor device |
| CN103498833A (en) * | 2013-10-17 | 2014-01-08 | 济南夫驰科技有限公司 | Air cylinder with end cover sealing structure |
-
2015
- 2015-03-26 CN CN201510134229.9A patent/CN104819285A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB227157A (en) * | 1923-09-26 | 1924-12-29 | Wilfrid L Spence | Improvements in or connected with fluid pressure engines, compressors and the like |
| CN2359524Y (en) * | 1998-12-31 | 2000-01-19 | 中国科学院金属研究所 | Double-metal piston for pneumatic mechanism |
| CN2660144Y (en) * | 2003-11-12 | 2004-12-01 | 重庆镁业科技股份有限公司 | Aluminum piston |
| CN101092948A (en) * | 2006-01-24 | 2007-12-26 | 高阳 | Piston type four cycle engine of reciprocating air motor power, electromagnetic repellent force, and inertia force |
| CN102031993A (en) * | 2010-12-30 | 2011-04-27 | 南京理工大学 | Two-stage expansion piston air motor device |
| CN103498833A (en) * | 2013-10-17 | 2014-01-08 | 济南夫驰科技有限公司 | Air cylinder with end cover sealing structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109878484A (en) * | 2019-04-02 | 2019-06-14 | 桂林航天工业学院 | A kind of Pneumatic automobile partial pressure equipment |
| CN109878484B (en) * | 2019-04-02 | 2020-04-21 | 桂林航天工业学院 | Pneumatic pressure-dividing equipment for automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150805 |
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| RJ01 | Rejection of invention patent application after publication |