CN104214164A - Piston assembly - Google Patents
Piston assembly Download PDFInfo
- Publication number
- CN104214164A CN104214164A CN201310215427.9A CN201310215427A CN104214164A CN 104214164 A CN104214164 A CN 104214164A CN 201310215427 A CN201310215427 A CN 201310215427A CN 104214164 A CN104214164 A CN 104214164A
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- piston
- cylinder body
- supporting element
- piston assembly
- assembly according
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- 230000008901 benefit Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
- Actuator (AREA)
Abstract
The invention discloses a piston assembly. The piston assembly comprises a cylinder body, a piston and a plurality of supporting parts. The piston does linear reciprocating motion in the cylinder body in the axial direction of the cylinder body. The supporting parts are arranged between the inner circumferential wall of the cylinder body and the outer circumferential wall of the piston and arranged on the outer circumferential wall of the piston at intervals in the circumferential direction or arranged on the inner circumferential wall of the cylinder body at intervals in the circumferential direction. According to the piston assembly, the supporting parts are arranged between the piston and the cylinder body, and therefore the relative contact area between the piston and the cylinder body is reduced, the frictional resistance is reduced, and temperature rise, caused by friction, of the piston assembly is lowered.
Description
Technical field
The present invention relates to Machinery Control System technical field, in particular to a kind of piston assembly.
Background technique
Hydraulic pressure and pneumatics are widely used in Machinery Control System now.And in hydraulic pressure and pneumatics, hydraulic pressure cylinder assembly and cylinder assembly are core components.The guided bearing of current oil hydraulic cylinder cylinder and piston mainly realizes with guided bearing ring.This guided bearing ring is made up of high-abrasive material, is wound in piston circumferentially, the radial force that Absorbable rod produces at any time, and bearing capacity is larger.But, this guided bearing ring along piston circumferentially, tightly be wrapped in radial force on piston and larger to cylinder body generation, when piston is relative to movement of cylinder block, area of contact between guided bearing ring and cylinder body is large and produce larger frictional force, and this frictional force causes hydraulic pressure cylinder assembly or cylinder assembly to produce obvious temperature rise.
Summary of the invention
The present invention is intended at least to solve one of technical problem existed in prior art.
In view of this, the present invention needs to provide a kind of piston assembly, and described piston assembly is provided with multiple each supporting element, and the set-up mode of described supporting element can reduce the frictional force between cylinder body and piston.
Piston assembly according to an embodiment of the invention, comprising: cylinder body; Piston, described piston is located in cylinder body along Boring mill to doing straight reciprocating motion; With multiple supporting element, described multiple supporting element is located between the inner circle wall of described cylinder body and the periphery wall of described piston, and multiple described supporting element is circumferentially disposed on described piston outer periphery wall or is circumferentially disposed on the inner circle wall of described cylinder body.
Piston assembly according to an embodiment of the invention, is provided with multiple supporting element at piston and cylinder body, replaces existing guided bearing ring, the relative contact reducing piston and cylinder body amasss, reduce surface friction drag, thus, intensification piston assembly being occurred due to friction can be reduced.
According to one embodiment of present invention, the periphery wall of described piston is circumferentially provided with multiple and described multiple supporting element groove one to one, and each described supporting element part is arranged in described groove.
According to one embodiment of present invention, each described supporting element side adjacent with described inboard wall of cylinder block is formed with unfilled corner.
According to one embodiment of present invention, described unfilled corner is circular arc.
According to one embodiment of present invention, each described supporting element is along Boring mill to extension.
According to one embodiment of present invention, described supporting element along Boring mill to size be less than piston outer periphery wall along Boring mill to size.
According to one embodiment of present invention, described cylinder body is oil hydraulic cylinder or cylinder.
According to one embodiment of present invention, described supporting element equidistantly distributes.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of piston assembly according to an embodiment of the invention;
Fig. 2 is the sectional view got along the line A-A in Fig. 1;
Fig. 3 is the side view of the supporting element 30 of piston assembly according to an embodiment of the invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
As shown in Figure 1 and Figure 2, piston assembly according to an embodiment of the invention, comprising: cylinder body 10, piston 20 and multiple supporting element 30.
Specifically, piston 20 can be located in cylinder body 10 and in axial direction (left and right directions as in Fig. 2) does straight reciprocating motion.Multiple supporting element 30 is located between the inner circle wall of cylinder body 10 and the periphery wall of piston 20, on the periphery wall that multiple supporting element 30 is circumferentially disposed on piston 20 or be circumferentially disposed on the inner circle wall of cylinder body 10.In other words, the inner circle wall of cylinder body 10 or the periphery wall of piston 20 circumferentially can be provided with multiple supporting element 30 in direction, supporting element 30 can be connected with cylinder body 10 and piston 20 respectively, with when cylinder body 10 and piston 20 relative sliding, makes frictional force between cylinder body 10 and piston 20 less.
Piston assembly according to an embodiment of the invention, piston 20 and cylinder body 10 are provided with multiple supporting element 30, replace existing guide support ring, the relative contact reducing piston 20 and cylinder body 10 amasss, reduce surface friction drag, thus, the temperature of the intensification making piston assembly due to friction can be reduced.
As shown in Figure 1 and Figure 2, according to an of the present invention and embodiment, the periphery wall of piston 20 is circumferentially provided with multiple and multiple supporting element 30 groove 40 one to one, and each supporting element 30 part is arranged in groove 40.Thus, can supporting element 30 be positioned on piston 20, can so that the installation of supporting element 30, the periphery wall of piston arranges multiple groove 40 can conveniently be implemented, and thus, can reduce the manufacture cost of piston assembly.According to one embodiment of present invention, supporting element 30 can equidistantly distribute.Thus, piston assembly work can be made more stable.
As shown in Figure 3, according to one embodiment of present invention, each supporting element 30 is formed with unfilled corner 50 with the adjacent side of cylinder body 10 inwall.In other words, be formed with fillet in the both sides, top of each supporting element 30, namely unfilled corner can be circular arc.Thus, the end face (supporting element 30 and the adjacent side of cylinder body 10 inwall) of supporting element 30 and the area of contact of cylinder body 10 inwall can be reduced, thus reduce the frictional force between supporting element 30 and cylinder body 10 inwall.
As shown in Figure 2, according to one embodiment of present invention, each supporting element 30 in axial direction (left and right directions see in Fig. 2) extension.In other words, supporting element 30 is extended with intended distance in the axial direction, and namely the length direction of supporting element 30 is in left-right direction.Thus, can realize the stable support between piston 20 and cylinder body 10, improve the stability of piston assembly.As shown in Figure 2, according to one embodiment of present invention, supporting element 30 length in left-right direction can be less than piston outer periphery wall length in left-right direction.Thus, supporting element 30 can be positioned on the outer side wall of piston 20 securely.
According to one embodiment of present invention, cylinder body 10 can be oil hydraulic cylinder or cylinder.Namely piston 20 can be for the piston in oil hydraulic cylinder or cylinder.
The assembly process of piston assembly is according to an embodiment of the invention described referring to Fig. 1, Fig. 2.
First the circumferencial direction of piston 20 is evenly processed with the groove 40 placing supporting member 30.Before assembling, first supporting member 30 is placed on piston 20 in respective slot 40, and then piston 20 is assembled in cylinder body.In order to reduce the area of contact with cylinder body 10, the part that supporting member 30 contacts with cylinder body 10 can suitably correction of the flank shape.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " illustrative examples ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, those having ordinary skill in the art will appreciate that, can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (8)
1. a piston assembly, is characterized in that, comprising:
Cylinder body;
Piston, described piston is located in cylinder body along Boring mill to doing straight reciprocating motion; With
Multiple supporting element, described multiple supporting element is located between the inner circle wall of described cylinder body and the periphery wall of described piston, and multiple described supporting element is circumferentially disposed on described piston outer periphery wall or is circumferentially disposed on the inner circle wall of described cylinder body.
2. piston assembly according to claim 1, is characterized in that, the periphery wall of described piston is circumferentially provided with multiple and described multiple supporting element groove one to one, and each described supporting element part is arranged in the groove of described correspondence.
3. piston assembly according to claim 2, is characterized in that, each described supporting element side adjacent with described inboard wall of cylinder block is formed with unfilled corner.
4. piston assembly according to claim 3, is characterized in that, described unfilled corner is circular arc.
5. piston assembly according to claim 1, is characterized in that, each described supporting element is along cylinder body axially reciprocating.
6. piston assembly according to claim 5, is characterized in that, described supporting element along Boring mill to size be less than piston outer periphery wall along Boring mill to size.
7. piston assembly according to claim 1, is characterized in that, described cylinder body is oil hydraulic cylinder or cylinder.
8. piston assembly according to claim 1, is characterized in that, described supporting element equidistantly distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215427.9A CN104214164A (en) | 2013-05-31 | 2013-05-31 | Piston assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215427.9A CN104214164A (en) | 2013-05-31 | 2013-05-31 | Piston assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104214164A true CN104214164A (en) | 2014-12-17 |
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ID=52095973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310215427.9A Pending CN104214164A (en) | 2013-05-31 | 2013-05-31 | Piston assembly |
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| Country | Link |
|---|---|
| CN (1) | CN104214164A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355446A (en) * | 2017-06-29 | 2017-11-17 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of piston support structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4704949A (en) * | 1983-07-15 | 1987-11-10 | Robert Ogg | Piston |
| CN1051779A (en) * | 1989-10-11 | 1991-05-29 | 威克斯制造公司 | The piston that reduces to rub |
| CN2365410Y (en) * | 1999-03-26 | 2000-02-23 | 山东活塞厂 | Low-friction type piston |
| DE10121852C2 (en) * | 2001-05-04 | 2003-04-17 | Man B & W Diesel Ag | reciprocating internal combustion engine |
| US20040226402A1 (en) * | 2003-01-21 | 2004-11-18 | Gerhard Fuchs | Cylinders having differing surface roughness |
| CN201416636Y (en) * | 2009-04-30 | 2010-03-03 | 广州宝力特液压密封有限公司 | Combined seal ring of piston |
| CN102261475A (en) * | 2010-05-19 | 2011-11-30 | Smc株式会社 | Fluid pressure apparatus |
| CN203321928U (en) * | 2013-05-31 | 2013-12-04 | 北京谊安医疗系统股份有限公司 | Piston assembly |
-
2013
- 2013-05-31 CN CN201310215427.9A patent/CN104214164A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4704949A (en) * | 1983-07-15 | 1987-11-10 | Robert Ogg | Piston |
| CN1051779A (en) * | 1989-10-11 | 1991-05-29 | 威克斯制造公司 | The piston that reduces to rub |
| CN2365410Y (en) * | 1999-03-26 | 2000-02-23 | 山东活塞厂 | Low-friction type piston |
| DE10121852C2 (en) * | 2001-05-04 | 2003-04-17 | Man B & W Diesel Ag | reciprocating internal combustion engine |
| US20040226402A1 (en) * | 2003-01-21 | 2004-11-18 | Gerhard Fuchs | Cylinders having differing surface roughness |
| CN201416636Y (en) * | 2009-04-30 | 2010-03-03 | 广州宝力特液压密封有限公司 | Combined seal ring of piston |
| CN102261475A (en) * | 2010-05-19 | 2011-11-30 | Smc株式会社 | Fluid pressure apparatus |
| CN203321928U (en) * | 2013-05-31 | 2013-12-04 | 北京谊安医疗系统股份有限公司 | Piston assembly |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107355446A (en) * | 2017-06-29 | 2017-11-17 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of piston support structure |
| CN107355446B (en) * | 2017-06-29 | 2019-01-11 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of piston support structure |
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Application publication date: 20141217 |