CN202274085U - Piston cylinder - Google Patents
Piston cylinder Download PDFInfo
- Publication number
- CN202274085U CN202274085U CN2011204217175U CN201120421717U CN202274085U CN 202274085 U CN202274085 U CN 202274085U CN 2011204217175 U CN2011204217175 U CN 2011204217175U CN 201120421717 U CN201120421717 U CN 201120421717U CN 202274085 U CN202274085 U CN 202274085U
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- China
- Prior art keywords
- cylinder barrel
- ear seat
- cylinder
- piston
- piston cylinder
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a piston cylinder (100), which comprises a cylinder barrel (10), a pair of concentric lug installation holes (15) and a pair of lugs, wherein the lug installation holes (15) pass through the cylinder barrel along a radial direction; and the lugs are arranged in the lug installation holes respectively. A pair of lugs is arranged in the pair of concentric lug installation holes, so that high position accuracy of the pair of lugs can be ensured easily.
Description
Technical field
The utility model relates to hydraulic pressure or pneumatic field, particularly, relates to a kind of piston cylinder, and this piston cylinder can be oil hydraulic cylinder or cylinder.
Background technique
As shown in Figure 1; In general; Piston cylinder 100 ' comprises cylinder barrel 10 ', can reciprocatingly be assemblied in the piston rod 11 ' in the cylinder barrel 10 ' and be arranged on the pilot seal assembly on the internal surface of wall of cylinder barrel 10 ' in the position of contiguous cylinder barrel 10 ' opening end, and this pilot seal assembly comprises guide sleeve 12 ' and Sealing 13 '.In addition, in order to adapt to the needs of piston cylinder job requirement, on the outer surface of the wall of the cylinder barrel 10 ' of carrying out cylinder 100 ', also be provided with a pair of ear seat 14 ' usually, so that be connected with miscellaneous part, as being used for installing this execution cylinder 100 '.
In traditional piston cylinder, each the ear seat in a pair of ear seat 14 ' is arranged on the outer surface of wall of cylinder barrel 10 ' through welded and installed respectively, and therefore, because operate miss, this relative positional accuracy to ear seat 14 ' is not very high usually.Specifically; Reliable connection in order to ensure the cylinder barrel 10 ' of piston cylinder 100 '; Require a pair of ear seat 14 ' to have higher relatively coaxality; Otherwise in use, be easy to cause this situation to produce, even the stressed excessive of some ear seats occur and the accident that causes this ear seat to lose efficacy ear seat 14 ' discontinuity equalization.
Therefore, the functional reliability of traditional piston cylinder is not high relatively.
The model utility content
The purpose of the utility model provides a kind of piston cylinder, and this piston cylinder has higher relatively functional reliability.
To achieve these goals; The utility model provides a kind of piston cylinder; This piston cylinder comprises: cylinder barrel, said piston cylinder also comprise a pair of concentric ear seat mounting hole that radially runs through said cylinder barrel and are installed in this respectively to a pair of ear seat in the ear seat mounting hole.
Preferably, said cylinder barrel is what be made into integration.
Preferably, said cylinder barrel comprises cylinder barrel body and ear seat installation tube, and this ear seat installation tube is positioned at the end of said cylinder barrel body and is fixedly installed togather coaxially with said cylinder barrel body, and said a pair of concentric ear seat mounting hole is arranged on the said ear seat installation tube.
Preferably, said piston cylinder also is provided with position structure, and said cylinder barrel body and ear seat installation tube are fitted to each other through this position structure.
Preferably, said position structure comprises locating stud that is arranged on one in said cylinder barrel body and the ear seat installation tube and the locating slot that is arranged on the correspondence on another person in said cylinder barrel body and the ear seat installation tube, and this locating stud inserts in the said locating slot.
Preferably; Said position structure comprises: be arranged on first locating slot on a side of said ear seat installation tube of said cylinder barrel body, be arranged on said ear seat installation tube the correspondence on a side of said cylinder barrel body second locating slot and be fixedly installed on the positioning block in this first locating slot and second locating slot.
Preferably, said positioning block is positioned on the outer circumferential face of said cylinder barrel body and ear seat installation tube of said cylinder barrel.
Preferably, said cylinder barrel has opening end, and said piston cylinder also comprises: piston rod, and this piston rod can reciprocatingly be assemblied in the outside that reaches said cylinder barrel in the said cylinder barrel and from the said opening end of said cylinder barrel; Guide sleeve, at least a portion of this guide sleeve is installed between the inwall and said piston rod of said cylinder barrel in the open end of said cylinder barrel; And lining, the inner peripheral surface of the end of the said opening end dorsad of said guide sleeve is provided with radially expansion section, and said lining is fixedly installed on this radially in the expansion section and the inner peripheral surface of said lining and the inner peripheral surface coplane of said guide sleeve.
Preferably; Be provided with annular groove in the said radially expansion section; Be provided with snap ring in this annular groove, the internal diameter of this snap ring is greater than the external diameter of said piston rod and less than the external diameter of said lining, to stop said lining moving axially away from said opening end.
Preferably, the shape of cross section of said snap ring is a rectangle.
Preferably, said snap ring is that discrete ring has breach.
Preferably, said snap ring has symplex structure, and the end face at the two ends of said snap ring is parallel with the central axis of this snap ring, and the central angle alpha of said breach is that 60 degree are to 80 degree.
Through technique scheme, through a pair of ear seat being installed in this, can guarantee comparatively easily that this also has higher positional accuracy to the ear seat, thereby realize the purpose of the utility model in the concentric ear seat mounting hole.
Other feature and advantage of the utility model will partly specify in embodiment subsequently.
Description of drawings
Accompanying drawing is the further understanding that is used to provide the utility model, and constitutes the part of specification, is used to explain the utility model with following embodiment, but does not constitute the restriction to the utility model.In the accompanying drawings:
Fig. 1 is the sectional view of structure of the open end of the traditional piston cylinder of expression;
Fig. 2 is the sectional view according to the structure of the open end of the cylinder barrel of the piston cylinder of the utility model;
Fig. 3 is the local enlarged diagram of a-quadrant among Fig. 2;
Fig. 4 is the sectional view according to the open end of the piston cylinder of the utility model;
Fig. 5 be piston cylinder shown in Figure 4 open end along K among Fig. 4 to partial top view;
Fig. 6 is the sectional view of assembly relation of open end piston rod and the pilot seal assembly of the piston cylinder shown in Fig. 4.
Fig. 7 is a kind of structural representation of preferred snap ring;
Fig. 8 is the amplification sectional view along A-A among Fig. 7.
Embodiment
Be elaborated below in conjunction with the embodiment of accompanying drawing to the utility model.Should be understood that embodiment described herein only is used for explanation and explains the utility model, is not limited to the utility model.
The piston cylinder that the utility model provided comprises cylinder barrel 10, and wherein said piston cylinder 100 also comprises a pair of concentric ear seat mounting hole 15 that radially runs through said cylinder barrel 10 and is installed in this respectively to a pair of ear seat 14 in the ear seat mounting hole 15.
Down towards the improvement with respect to traditional piston cylinder describes in detail to the technological scheme of the utility model.As for the technological scheme of the utility model same or analogous technical characteristics with respect to traditional piston cylinder, this specification will be concise and to the point or be omitted the description to it.
Like Fig. 2 and shown in Figure 4, said piston cylinder 100 also comprises a pair of concentric ear seat mounting hole 15 that radially runs through said cylinder barrel 10, and said a pair of ear seat 14 is installed in this respectively in the ear seat mounting hole 15.Therefore, according to the technological scheme of the utility model, at first on cylinder barrel 10, process a pair of concentric ear seat mounting hole 15, and then a pair of ear seat 14 is respectively installed in a pair of ear seat mounting hole 15.
In traditional piston cylinder, as shown in Figure 1, the installation of a pair of ear seat 14 ' is to be welded direct on the outer circumferential face of cylinder barrel 10, thereby causes this relative position to ear seat 14 ' (like coaxality) to have bigger error.
And according to the technological scheme of the utility model, a pair of 15 concentric of the ear seat mounting holes of processing have higher relatively positional accuracy (for example, this precision to the concentricity of concentric ear seat mounting hole 15 is higher) usually on cylinder barrel 10.Thereby, through a pair of ear seat 14 being installed in this, can guarantee very comparatively easily that this also has higher positional accuracy to ear seat 14, thereby realize the purpose of the utility model in the concentric ear seat mounting hole 15.
A pair of concentric ear seat mounting hole 15 can be processed acquisition in several ways.
For example, said cylinder barrel 10 can utilize the above-mentioned ear seat of Drilling Operations mounting hole 15 for what be made into integration.
For another example; Cylinder barrel 10 can be for split type; Said cylinder barrel 10 comprises cylinder barrel body 101 and ear seat installation tube 102; This ear seat installation tube 102 is positioned at the end of said cylinder barrel body 101 and is fixedly installed togather coaxially with said cylinder barrel body 101, and said a pair of concentric ear seat mounting hole 15 is arranged on the said ear seat installation tube 102.For this kind structural type; Cylinder barrel body 101 is processed respectively with ear seat installation tube 102; On ear seat installation tube 102, carry out the processing of ear seat mounting hole 15 then, the ear seat installation tube 102 that will be processed with ear seat mounting hole 15 again is assembled together with cylinder barrel body 101.Because as a rule, the volume size of ear seat installation tube 102 is usually less than the volume size of cylinder barrel 10, thereby it is relatively more easy on ear seat installation tube 102, to carry out the processing of ear seat mounting hole 15, thereby can obtain higher machining accuracy.
Like Fig. 2 and shown in Figure 4; Ear seat installation tube 102 is assembled together with the end of cylinder barrel body 101; Thereby for cylinder barrel 10, the opening end (zone) of ear seat installation tube 102 (own or with the zone with the end of ear seat installation tube 102 assemblings of cylinder barrel body 101) formation cylinder barrel 10.
A pair of ear seat mounting hole 15 can be distinguished Drilling Operations and form, but under the preferable case, utilizes the processing simultaneously in the time processing drilling process of same drilling cutters to drill through this a pair of ear seat mounting hole 15, thereby can obtain higher positional accuracy.
As stated, cylinder barrel body 101 is assembled together with ear seat installation tube 102, for example can be through being threaded together.Preferably, in order to ensure having relative position relation accurately between cylinder barrel body 101 and the ear seat installation tube 102, said piston cylinder 100 also is provided with position structure, and said cylinder barrel body 101 and ear seat installation tube 102 are fitted to each other through this position structure.
Position structure can have various ways.
For example; Said position structure can comprise and be arranged on locating stud that one in said cylinder barrel body 101 and the ear seat installation tube 102 go up (like cylinder barrel body 101) and be arranged on the locating slot that said cylinder barrel body 101 and another person in the ear seat installation tube 102 go up the correspondence of (like ear seat installation tube 102) that this locating stud inserts in the said locating slot.
For another example; Like Fig. 3 and shown in Figure 5; Said position structure can comprise: be arranged on first locating slot 103 on a side of said ear seat installation tube 102 of said cylinder barrel body 101, be arranged on said ear seat installation tube 102 the correspondence on a side of said cylinder barrel body 101 second locating slot 104 and be fixedly installed on this first locating slot 103 and second locating slot 104 in positioning block 105.
Preferably, like Fig. 3 and shown in Figure 5, said positioning block 105 is positioned on the outer circumferential face of said cylinder barrel body 101 and ear seat installation tube 102 of said cylinder barrel 10.But the mounting point of positioning block 105 is not limited to this, and for example positioning block 105 also can be positioned on the inner peripheral surface of said cylinder barrel body 101 and ear seat installation tube 102 of said cylinder barrel 10.
As shown in Figure 6, preferably, cylinder barrel 10 has opening end 20.Said piston cylinder 100 comprises: piston rod 11, and this piston rod 11 can reciprocatingly be assemblied in the outside that reaches said cylinder barrel 10 in the said cylinder barrel 10 and from the said opening end 20 of said cylinder barrel 10; Guide sleeve 12, at least a portion of this guide sleeve 12 are installed between the inwall and said piston rod 11 of said cylinder barrel 10 at opening end 20 places of said cylinder barrel 10; And lining 15; The inner peripheral surface of the end of the said dorsad opening end 20 of said guide sleeve 12 is provided with radially expansion section 16, and said lining 15 is fixedly installed on this radially in the expansion section 16 and the inner peripheral surface of said lining 15 and the inner peripheral surface coplane of said guide sleeve 12.
The piston rod 11 of piston cylinder 100 is assemblied in the cylinder barrel 10, thereby cylinder barrel 10 is divided into rod chamber and rodless cavity, realizes the action of piston rod 11 with the control that pressure hydraulic oil is arranged according to system.Guide sleeve 12 be installed in cylinder barrel 10 opening end 20 places (promptly this opening end 20 and with these opening end 20 adjacent areas in), be used for also avoiding the flowing medium in the cylinder barrel 10 to flow out to the outside allowing the 11 reciprocating whiles of piston rod.In preferred embodiment, also the guide sleeve 12 to (the pilot seal assembly) of piston cylinder 100 improves.
Owing to be provided with lining 15, thereby can better working environment be provided for piston rod.As shown in Figure 6, lining 15 is fixedly mounted in the radially expansion section 16 of guide sleeve 12, thus can utilize expansion section 16 formed steps radially (be lining 15 among Fig. 6 right flank against the position) restriction lining 15 is towards the outside axial float of cylinder barrel 10.
Be generally interference fit between the radially expansion section 16 of lining 15 and guide sleeve 12 so that lining 15 robust be installed to the precalculated position.But preferably; In order to limit the axial float of lining 15 more reliably towards cylinder barrel 10 inside; As shown in Figure 6, be provided with annular groove 17 in the said radially expansion section 16, be provided with snap ring 18 in this annular groove 17; The internal diameter of this snap ring 18 is greater than the external diameter of said piston rod 11 and less than the external diameter of said lining 15, to stop said lining 15 moving axially away from said opening end 20.
As shown in Figure 6; Lining 15 is between above-mentioned step and snap ring 18; Thereby realize position-limiting action to lining 15; Can prevent lining 15 away from the moving axially of said opening end 20 (promptly towards the inner axial float of cylinder barrel 10), can prevent that also lining 15 is towards the moving axially of opening end 20 (promptly towards the outside axial float of cylinder barrel 10).
Preferably, as shown in Figure 7, said snap ring 18 has symplex structure, and the end face at the two ends of said snap ring 18 is parallel with the central axis of this snap ring 18, and the central angle alpha of said breach 19 is that 60 degree are to 80 degree.
The shape of cross section of snap ring 18 can be circle, ellipse, semicircle etc.The shape of cross section of said snap ring 18 is rectangle, and is as shown in Figure 6 but preferably.Shape of cross section through with snap ring 18 is designed to rectangle, can make between snap ring 18 and the annular groove 17 to have bigger area of contact, thereby more reliably snap ring 18 is limited in the annular groove 17.Here said rectangle is not meant the absolute rectangle on the planimetry meaning, but is adapted to various (being similar to) rectangular shape in the commercial Application, has chamfering in the rectangular cross-sectional shape of snap ring 18 for example shown in Figure 8.
The structural type of the snap ring 18 shown in Fig. 7 and Fig. 8 only is a kind of preferred construction form of snap ring 18; In fact the structural type that is applicable to the snap ring 18 in the present techniques scheme is not limited to above-mentioned preferred construction form, but can select other various suitable structural types according to different working conditions.
More than combine accompanying drawing to describe the preferred implementation of the utility model in detail; But; The utility model is not limited to the detail in the above-mentioned mode of execution; In the technical conceive scope of the utility model, can carry out multiple simple variant to the technological scheme of the utility model, these simple variant all belong to the protection domain of the utility model.
Need to prove that in addition each the concrete technical characteristics described in above-mentioned embodiment under reconcilable situation, can make up through any suitable manner, and be not limited to the adduction relationship of each item claim in claims.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between the various mode of execution of the utility model, as long as its thought without prejudice to the utility model, it should be regarded as content disclosed in the utility model equally.
Claims (12)
1. piston cylinder (100); This piston cylinder (100) comprises cylinder barrel (10); It is characterized in that said piston cylinder (100) also comprises a pair of concentric ear seat mounting hole (15) that radially runs through said cylinder barrel (10) and is installed in this respectively to a pair of ear seat (14) in the ear seat mounting hole (15).
2. piston cylinder according to claim 1 (100) is characterized in that, said cylinder barrel (10) is what be made into integration.
3. piston cylinder according to claim 1 (100); It is characterized in that; Said cylinder barrel (10) comprises cylinder barrel body (101) and ear seat installation tube (102); This ear seat installation tube (102) is positioned at the end of said cylinder barrel body (101) and is fixedly installed togather coaxially with said cylinder barrel body (101), and said a pair of concentric ear seat mounting hole (14) is arranged on the said ear seat installation tube (102).
4. piston cylinder according to claim 3 (100) is characterized in that, said piston cylinder (100) also is provided with position structure, and said cylinder barrel body (101) and ear seat installation tube (102) are fitted to each other through this position structure.
5. piston cylinder according to claim 4 (100); It is characterized in that; Said position structure comprises locating stud that is arranged on one in said cylinder barrel body (101) and the ear seat installation tube (102) and the locating slot that is arranged on the correspondence on another person in said cylinder barrel body (101) and the ear seat installation tube (102), and this locating stud inserts in the said locating slot.
6. piston cylinder according to claim 4 (100); It is characterized in that; Said position structure comprises: be arranged on first locating slot (103) on a side of said ear seat installation tube (102) of said cylinder barrel body (101), be arranged on said ear seat installation tube (102) the correspondence on a side of said cylinder barrel body (101) second locating slot (104) and be fixedly installed on the positioning block (105) in this first locating slot (103) and second locating slot (104).
7. piston cylinder according to claim 6 (100) is characterized in that, said positioning block (105) is positioned on the outer circumferential face of said cylinder barrel body (101) and ear seat installation tube (102) of said cylinder barrel (10).
8. according to any described piston cylinder (100) among the claim 1-7, it is characterized in that said cylinder barrel (10) has opening end (20), said piston cylinder (100) also comprises:
Piston rod (11), this piston rod (11) can reciprocatingly be assemblied in the outside that reaches said cylinder barrel (10) in the said cylinder barrel (10) and from the said opening end (20) of said cylinder barrel (10);
Guide sleeve (12), at least a portion of this guide sleeve (12) is located to be installed between the inwall and said piston rod (11) of said cylinder barrel (10) at the opening end (20) of said cylinder barrel (10); With
Lining (15); The inner peripheral surface of the end of the said dorsad opening end (20) of said guide sleeve (12) is provided with radially expansion section (16), and said lining (15) is fixedly installed on this radially in expansion section (16) and the inner peripheral surface of said lining (15) and the inner peripheral surface coplane of said guide sleeve (12).
9. piston cylinder according to claim 8 (100); It is characterized in that; Be provided with annular groove (17) in the said radially expansion section (16); Be provided with snap ring (18) in this annular groove (17), the internal diameter of this snap ring (18) is greater than the external diameter of said piston rod (11) and less than the external diameter of said lining (15), to stop said lining (15) moving axially away from said opening end (20).
10. piston cylinder according to claim 9 (100) is characterized in that, the shape of cross section of said snap ring (18) is a rectangle.
11. piston cylinder according to claim 9 (100) is characterized in that, said snap ring (18) has breach (19) for discrete ring.
12. piston cylinder according to claim 11 (100); It is characterized in that; Said snap ring (18) has symplex structure, and the end face at the two ends of said snap ring (18) is parallel with the central axis of this snap ring (18), and the central angle alpha of said breach (19) is that 60 degree are to 80 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204217175U CN202274085U (en) | 2011-10-31 | 2011-10-31 | Piston cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204217175U CN202274085U (en) | 2011-10-31 | 2011-10-31 | Piston cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202274085U true CN202274085U (en) | 2012-06-13 |
Family
ID=46194446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204217175U Expired - Fee Related CN202274085U (en) | 2011-10-31 | 2011-10-31 | Piston cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202274085U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852896A (en) * | 2012-07-26 | 2013-01-02 | 沈姝君 | Double-action multistage hydraulic oil cylinder with solid piston rod |
-
2011
- 2011-10-31 CN CN2011204217175U patent/CN202274085U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852896A (en) * | 2012-07-26 | 2013-01-02 | 沈姝君 | Double-action multistage hydraulic oil cylinder with solid piston rod |
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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: 20120613 Termination date: 20171031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |