CN107575573A - A kind of piston for engineering machinery - Google Patents
A kind of piston for engineering machinery Download PDFInfo
- Publication number
- CN107575573A CN107575573A CN201710686424.1A CN201710686424A CN107575573A CN 107575573 A CN107575573 A CN 107575573A CN 201710686424 A CN201710686424 A CN 201710686424A CN 107575573 A CN107575573 A CN 107575573A
- Authority
- CN
- China
- Prior art keywords
- piston
- engineering machinery
- annular groove
- piston body
- elastic filler
- 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
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a kind of piston for engineering machinery, including piston body (2), piston hole (3) is provided with described piston body (2), the head of described piston hole (3) is provided with interior concave ring slot (4), and (3 left side wall and right side wall is respectively equipped with the regulating tank (5) of isosceles trapezoid to described piston hole；Described piston body (2) includes metal master and elastic filler (8), the piston body (2) offers multiple annular grooves (6) for being used to accommodate sealing ring with the outer fringe surface that hydraulic cylinder (1) contacts, annular groove (7) is provided with the middle part of the metal master, the elastic filler (8) is filled in the annular groove (7).The piston of the present invention includes metal master and is embedded in the elastic filler of the metal master outer fringe surface, therefore is effectively reduced the weight of piston, reduces the cost of piston；And it is compact-sized, assembly precision is high.
Description
Technical field
The present invention relates to mechanical fitting technical field, is related to a kind of piston, more particularly to a kind of work for engineering machinery
Plug.
Background technology
Hydraulic cylinder is the important component of engineering machinery, and it is that hydraulic energy is changed into mechanical energy, does straight reciprocating motion
The hydraulic actuator of (or oscillating motion).Hydraulic cylinder is substantially by cylinder barrel and cylinder cap, piston and piston rod, sealing device, slow
Flushing device forms with exhaust apparatus, and wherein piston-type hydraulic cylinder is a kind of most common structure, by cylinder barrel and in cylinder barrel
Piston rod and piston form, one end that piston rod is stretched into inside cylinder barrel be equipped with piston, and during hydraulic oil promotion piston, piston can be with
Drive piston rod reciprocal.
At work, piston can frequently commutate the piston of prior art, and especially piston made of metal material easily produces
Raw stronger reversing impact, disassembly process is complicated, wastes the plenty of time, because its volume is big, and has certain weight, more
It is very laborious when changing, and its material cost is higher.And the assembly method of this structure does not fasten, while assembly precision is relatively low, together
When assembling trouble.
The content of the invention
The present invention mainly solves the deficiencies in the prior art, compact-sized, in light weight, and can lift assembling essence
Degree, improve the piston for engineering machinery of using effect.
To achieve the above object, the present invention is addressed by following technical proposals：
A kind of piston for engineering machinery, including piston body, piston hole, described piston are provided with described piston body
The head in hole is provided with interior concave ring slot, and the left side wall and right side wall of described piston hole are respectively equipped with the regulating tank of isosceles trapezoid；
Described piston body includes metal master and elastic filler, the outer fringe surface that the piston body contacts with hydraulic cylinder
Multiple annular grooves for being used to accommodate sealing ring are offered, annular groove, the elastic filler are provided with the middle part of the metal master
It is filled in the annular groove.
Preferably, the elastic filler is made up of nylon plastic material.
Preferably, the annular groove is three.
Preferably, the interior knuckle of the interior knuckle and annular groove (6) of described interior concave ring slot (3) is respectively arc chord angle.
Preferably, the outer knuckle of described piston body (2) is bevel, and the angle of inclination of described bevel is 45 degree.
Compared with prior art, the beneficial effects of the invention are as follows：
Include the metal master being made of metal provided by the present invention for the piston of engineering machinery and be embedded in the metal
The elastic filler of main body outer fringe surface, therefore the weight of piston is effectively reduced, the cost of piston is reduced, optimizes hydraulic pressure
Cylinder reduces the limitation of hydraulic cylinder application in the application effect closed to weight sensitivity field；In addition, it is provided with three in piston outer rim
For installing the annular groove of sealing ring, the sealing property of piston and cylinder body is effectively increased, and compact-sized, assembly precision
It is high.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
In figure, 1- hydraulic cylinders, 2- piston bodies, 3- piston holes, concave ring slot in 4-, 5- regulating tanks, 6- annular grooves, 7- rings
Shape groove, 8- elastic fillers.
Embodiment
Below by embodiment, and with reference to accompanying drawing, technical scheme is described in further detail.
As shown in figure 1, a kind of piston for engineering machinery, including piston body 2, piston is provided with described piston body 2
Hole 3, the head of described piston hole 3 are provided with interior concave ring slot 4, and the left side wall and right side wall of described piston hole 3 are respectively equipped with
The trapezoidal regulating tank 5 of waist；
Described piston body 2 includes metal master and elastic filler 8, the outer rim that the piston body 2 contacts with hydraulic cylinder 1
Surface offers multiple annular grooves 6 for being used to accommodate sealing ring, and annular groove 7, the elasticity are provided with the middle part of the metal master
Filler 8 is filled in the annular groove 7.
Preferably, the elastic filler 8 is made up of nylon plastic material.
In order to improve the sealing effectiveness of piston and cylinder body, the annular groove 6 is three.
In order to improve the assembly precision of piston, the interior knuckle of the interior knuckle and annular groove (6) of described interior concave ring slot (3)
Respectively arc chord angle.
Ibid, the outer knuckle of described piston body (2) is bevel, and the angle of inclination of described bevel is 45 degree.
Claims (5)
1. a kind of piston for engineering machinery, including piston body (2), piston hole (3) is provided with described piston body (2), its
It is characterised by,
The head of described piston hole (3) is provided with interior concave ring slot (4), and (3 left side wall and right side wall is set described piston hole respectively
There is the regulating tank (5) of isosceles trapezoid；
Described piston body (2) includes metal master and elastic filler (8), what the piston body (2) contacted with hydraulic cylinder (1)
Outer fringe surface offers multiple annular grooves (6) for being used to accommodate sealing ring, and annular groove (7) is provided with the middle part of the metal master,
The elastic filler (8) is filled in the annular groove (7).
A kind of 2. piston for engineering machinery according to claim 1, it is characterised in that the elastic filler (8)
It is made up of nylon plastic material.
A kind of 3. piston for engineering machinery according to claim 1 or 2, it is characterised in that the annular groove (6)
For three.
A kind of 4. piston for engineering machinery according to claim 1 or 2, it is characterised in that described interior concave ring slot
(3) the interior knuckle of interior knuckle and annular groove (6) is respectively arc chord angle.
A kind of 5. piston for engineering machinery according to claim 1 or 2, it is characterised in that described piston body (2)
Outer knuckle be bevel, the angle of inclination of described bevel is 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686424.1A CN107575573A (en) | 2017-08-11 | 2017-08-11 | A kind of piston for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710686424.1A CN107575573A (en) | 2017-08-11 | 2017-08-11 | A kind of piston for engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107575573A true CN107575573A (en) | 2018-01-12 |
Family
ID=61034975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710686424.1A Pending CN107575573A (en) | 2017-08-11 | 2017-08-11 | A kind of piston for engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107575573A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324743A (en) * | 2020-11-19 | 2021-02-05 | 北京航空航天大学 | Lightweight piston |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201858350U (en) * | 2010-08-31 | 2011-06-08 | 浙江万向系统有限公司 | Novel piston and piston ring |
| CN202756603U (en) * | 2012-08-03 | 2013-02-27 | 杭州同创顶立机械有限公司 | Plug-in type piston for engineering machinery |
| CN202756604U (en) * | 2012-08-03 | 2013-02-27 | 杭州同创顶立机械有限公司 | Piston for engineering machinery |
| CN202756605U (en) * | 2012-08-13 | 2013-02-27 | 杭州同创顶立机械有限公司 | High-tightness piston for engineering machinery |
| CN104632752A (en) * | 2013-11-06 | 2015-05-20 | 天津旺鑫祥液压机械科技有限公司 | Novel hydraulic cylinder with buffer function |
| CN104632767A (en) * | 2013-11-06 | 2015-05-20 | 天津市鑫盛祥液压机械科技有限公司 | Novel hydraulic cylinder piston and hydraulic cylinder |
-
2017
- 2017-08-11 CN CN201710686424.1A patent/CN107575573A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201858350U (en) * | 2010-08-31 | 2011-06-08 | 浙江万向系统有限公司 | Novel piston and piston ring |
| CN202756603U (en) * | 2012-08-03 | 2013-02-27 | 杭州同创顶立机械有限公司 | Plug-in type piston for engineering machinery |
| CN202756604U (en) * | 2012-08-03 | 2013-02-27 | 杭州同创顶立机械有限公司 | Piston for engineering machinery |
| CN202756605U (en) * | 2012-08-13 | 2013-02-27 | 杭州同创顶立机械有限公司 | High-tightness piston for engineering machinery |
| CN104632752A (en) * | 2013-11-06 | 2015-05-20 | 天津旺鑫祥液压机械科技有限公司 | Novel hydraulic cylinder with buffer function |
| CN104632767A (en) * | 2013-11-06 | 2015-05-20 | 天津市鑫盛祥液压机械科技有限公司 | Novel hydraulic cylinder piston and hydraulic cylinder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112324743A (en) * | 2020-11-19 | 2021-02-05 | 北京航空航天大学 | Lightweight piston |
| CN112324743B (en) * | 2020-11-19 | 2022-02-22 | 北京航空航天大学 | Lightweight piston |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180112 |