CN203584961U - Self-shock-absorbing multistage cylinder limiting structure - Google Patents
Self-shock-absorbing multistage cylinder limiting structure Download PDFInfo
- Publication number
- CN203584961U CN203584961U CN201320656796.7U CN201320656796U CN203584961U CN 203584961 U CN203584961 U CN 203584961U CN 201320656796 U CN201320656796 U CN 201320656796U CN 203584961 U CN203584961 U CN 203584961U
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- Prior art keywords
- ring
- spacing
- retaining ring
- limiting
- hole
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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 - Lifetime
Links
- 238000013016 damping Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
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Abstract
The utility model discloses a self-shock-absorbing multistage cylinder limiting structure, and relates to the technical field of hydraulic cylinders. The limiting structure comprises a limiting sleeve, wherein a limited sleeve capable of extending and retracting axially is mounted in the limiting sleeve; a hole retaining ring annular installation groove is formed in the inner wall of the limiting sleeve, and an open hole limiting retaining ring bulging out of the surface of the inner wall of the limiting sleeve is installed in the hole retaining ring annular installation groove; a shaft retaining ring annular installation groove is formed in the corresponding position on the outer wall of the limited sleeve, and an open shaft limiting retaining ring bulging out of the surface of the outer wall of the limiting sleeve is installed in the shaft retaining ring annular installation groove; chamfered angles are formed in corresponding positions of two end surfaces of an inner ring of the hole limiting retaining ring and two end surfaces of an outer ring of the shaft limiting retaining ring; and an assembly and disassembly oblique angle for facilitating assembly and disassembly of the retaining ring is formed in one end of the open part of the hole limiting retaining ring. The structure is simple, convenient to assembly and disassemble and capable of increasing the material utilization rate, improving the stage changing stability of a multistage cylinder and prolonging the service life of the multistage cylinder.
Description
Technical field
The utility model relates to oil hydraulic cylinder technical field, specifically a kind of from damping Multi-stage cylinder limit structure.
Background technique
Domestic conventional Multistage hydraulic cylinder position limiting structure has two kinds of structures at present, the first form is limit structure and sleeve one, during work, limited sleeve is overhanging vertically, after arrival stroke, by the boss processing on limited sleeve outer wall and in spacing collar or inner wall of cylinder, realizes the spacing lifting that stops.This limit structure exists difficulty of processing high, the drawback that stock utilization is low, and in use spacing collar and limited sleeve exist mutual impingement phenomenon easily to produce vibration, cause multistage hydraulic cylinder generation shear fails, pull sleeve phenomenon.
Another kind of form is that limit structure and sleeve are separated type, an end face that plays the spacing back-up ring of position-limiting action has had the chamfering of buffer function, but it can only be when every grade of sleeve stretches out, chamfering end face just can interact, and actual multistage hydraulic cylinder all needs limited location structure when stretching out and bounce back.
Summary of the invention
For overcoming the deficiency of prior art, in conjunction with sinciput formula quarry tipper elevating ram practical structures and operating mode, it is a kind of from damping Multi-stage cylinder limit structure that the utility model provides.
The utility model is achieved through the following technical solutions: one, from damping Multi-stage cylinder limit structure, comprises spacing collar, and the limited sleeve that can stretch is vertically housed in spacing collar; On the inwall of described spacing collar, offer the porose back-up ring annular mounting groove of using, the spacing back-up ring of open pore that protrudes spacing collar inner wall surface is installed in by back-up ring annular mounting groove in hole; On the outer wall relevant position of described limited sleeve, offer shaft block ring annular mounting groove, the spacing back-up ring of opening shaft that protrudes limited sleeve outer wall surface is installed in shaft block ring annular mounting groove; Described hole offers chamfering with the both ends of the surface of spacing back-up ring inner ring and the both ends of the surface relevant position of the spacing back-up ring of axle outer ring; Described hole offers with spacing back-up ring opening part one end the dismounting oblique angle of being convenient to back-up ring dismounting.
It is further: the angle of described chamfering is 10 °～12 °.
When free state, described hole has expansionary force with spacing back-up ring, and described axle has pretightening force with spacing back-up ring.
Between the inner peripheral surface and limited sleeve outer wall of described hole with spacing back-up ring, axle is with all leaving gap between spacing back-up ring outer circumferential face and spacing collar inwall.
When work, hole interacts with spacing back-up ring and the spacing back-up ring of axle, because end face cooperation position is designed with chamfering, the component that can produce radially reduces vibration, realization is automatic calibration when the lifting of every one-level sleeve and retraction put in place, improves and changes a grade stationarity, and further compress the spacing back-up ring in described hole and the spacing back-up ring of axle, make it more firm, being difficult for occurs to lose efficacy to be out of shape departs from annular mounting groove separately.
The utility model is simple in structure, be convenient to dismounting, can improve materials rate rate, improves Multi-stage cylinder and changes grade stationarity and working life.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is I place enlarged view in Fig. 1;
Fig. 3 is hole limiting block coil structures schematic diagram;
Fig. 4 be in Fig. 3 A-A to schematic diagram;
Fig. 5 is axle limiting block coil structures schematic diagram;
Fig. 6 be in Fig. 5 B-B to schematic diagram.
In figure: 1, the spacing back-up ring in hole; 2, the spacing back-up ring of axle; 3, limited sleeve; 4, spacing collar; 7, dismounting oblique angle.
Embodiment
Be below a specific embodiment of the present utility model, by reference to the accompanying drawings the utility model be described further.
As shown in Figure 1 and Figure 2, one, from damping Multi-stage cylinder limit structure, comprises spacing collar 4, and the limited sleeve 3 that can stretch is vertically housed in spacing collar 4; On the inwall of spacing collar 4, offer the porose back-up ring annular mounting groove of using, the spacing back-up ring 1 for open pore that protrudes spacing collar 4 inner wall surface is installed in the annular mounting groove in hole with spacing back-up ring 1; On the outer wall relevant position of limited sleeve 3, offer shaft block ring annular mounting groove, the spacing back-up ring 2 for opening shaft that protrudes limited sleeve 3 outer wall surface is installed in shaft block ring annular mounting groove; Axle with the structure of spacing back-up ring 2 as shown in Figure 5 and Figure 6.As shown in Figure 4, hole offers chamfering with the both ends of the surface of spacing back-up ring 1 inner ring and the both ends of the surface relevant position of the spacing back-up ring of axle 2 outer rings, and the angle of chamfering is 10 °; As shown in Figure 3, hole offers with spacing back-up ring 1 opening part one end the dismounting oblique angle 7 of being convenient to back-up ring dismounting, also can avoid wrongly installed in installation process.
When free state, described hole has expansionary force with spacing back-up ring 1, described axle has pretightening force with spacing back-up ring 2, can guarantee that the spacing back-up ring of the spacing back-up ring 1 in hole and axle 2 and annular mounting groove separately compress after installation, and the distortion of avoiding losing efficacy departs from annular mounting groove separately.
Between the inner peripheral surface and limited sleeve 3 outer walls of hole with spacing back-up ring 1, axle is with all leaving gap between spacing back-up ring 2 outer circumferential faces and spacing collar 4 inwalls, this gap prevents that lifting process mesopore from pulling the outer wall of limited sleeve with spacing back-up ring 1, and axle is pulled the inwall of spacing collar with spacing back-up ring 2.
When work, hole interacts with spacing back-up ring 1 and the spacing back-up ring 2 of axle, because end face cooperation position is designed with chamfering, the component that can produce radially reduces vibration, realization is automatic calibration when the lifting of every one-level sleeve and retraction put in place, and improve and change a grade stationarity, and further spacing back-up ring 1 and spacing back-up ring 2 for axle for hold-down apertures, make it more firm, being difficult for occurs to lose efficacy to be out of shape departs from annular mounting groove separately.
Claims (4)
1. from a damping Multi-stage cylinder limit structure, comprise spacing collar (4), the limited sleeve (3) that can stretch is vertically housed in spacing collar (4); On the inwall of described spacing collar (4), offer the porose back-up ring annular mounting groove of using, the spacing back-up ring for open pore (1) that protrudes spacing collar (4) inner wall surface is installed in by back-up ring annular mounting groove in hole; On the outer wall relevant position of described limited sleeve (3), offer shaft block ring annular mounting groove, the spacing back-up ring for opening shaft (2) that protrudes limited sleeve (3) outer wall surface is installed in shaft block ring annular mounting groove; It is characterized in that: the both ends of the surface of spacing back-up ring for described hole (1) inner ring and for axle the both ends of the surface relevant position of spacing back-up ring (2) outer ring offer chamfering; Spacing back-up ring for described hole (1) opening part one end offers the dismounting oblique angle (7) of being convenient to back-up ring dismounting.
2. one according to claim 1, from damping Multi-stage cylinder limit structure, is characterized in that: the angle of described chamfering is 10 °～12 °.
3. one according to claim 1, from damping Multi-stage cylinder limit structure, is characterized in that: when free state, spacing back-up ring for described hole (1) has expansionary force, and spacing back-up ring for described axle (2) has pretightening force.
4. one according to claim 1 is from damping Multi-stage cylinder limit structure, it is characterized in that: between the inner peripheral surface of spacing back-up ring for described hole (1) and limited sleeve (3) outer wall, between (2) outer circumferential face of spacing back-up ring for axle and spacing collar (4) inwall, all leave gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320656796.7U CN203584961U (en) | 2013-10-23 | 2013-10-23 | Self-shock-absorbing multistage cylinder limiting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320656796.7U CN203584961U (en) | 2013-10-23 | 2013-10-23 | Self-shock-absorbing multistage cylinder limiting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203584961U true CN203584961U (en) | 2014-05-07 |
Family
ID=50582891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320656796.7U Expired - Lifetime CN203584961U (en) | 2013-10-23 | 2013-10-23 | Self-shock-absorbing multistage cylinder limiting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203584961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986675A (en) * | 2019-11-11 | 2020-04-10 | 上海机电工程研究所 | Multistage piston cylinder type naked bullet gas ejection device and method |
-
2013
- 2013-10-23 CN CN201320656796.7U patent/CN203584961U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986675A (en) * | 2019-11-11 | 2020-04-10 | 上海机电工程研究所 | Multistage piston cylinder type naked bullet gas ejection device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |
|
| CX01 | Expiry of patent term |