CN202451514U - Mechanical locking hydraulic cylinder - Google Patents
Mechanical locking hydraulic cylinder Download PDFInfo
- Publication number
- CN202451514U CN202451514U CN2012200128181U CN201220012818U CN202451514U CN 202451514 U CN202451514 U CN 202451514U CN 2012200128181 U CN2012200128181 U CN 2012200128181U CN 201220012818 U CN201220012818 U CN 201220012818U CN 202451514 U CN202451514 U CN 202451514U
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- oil
- piston
- hydraulic cylinder
- piston rod
- mechanical locking
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Abstract
The utility model discloses a mechanical locking hydraulic cylinder. The mechanical locking hydraulic cylinder comprises a cylinder barrel, an end cover, a guide sleeve, a piston rod, a piston, a sealing element and a rodless cavity oil mouth. The mechanical locking hydraulic cylinder is characterized in that the cylinder barrel is in interference fit with the piston, an oil passing hole is arranged in the piston rod, a connection oil way is disposed in the piston, an inner end port of the oil passing hole is communicated with the connection oil way, an outer end port of the oil passing hole is located on the piston rod located outside the guide sleeve, the outer end port serves as an unlock oil mouth, and more than one ring-shaped oil guide groove which is communicated with the connection oil way is further mounted on the outer surface of the piston along an axial direction. By means of the mechanical locking hydraulic cylinder, under a large axial load, a reliable locking can still be achieved, so that the piston and the piston rod can remain unchanged in any range of stroke and at any position.
Description
Technical field
The utility model relates to a kind of oil hydraulic cylinder of locking, and latching ram makes oil hydraulic cylinder remain unchanged in any travel range, arbitrary position at an arbitrary position.
Background technique
Oil hydraulic cylinder is a kind of straight reciprocating motion and bears the executive component of big load, at some special occasions, requires its support load and do not have " soft leg " phenomenon for a long time and stably.In the actual hydraulic pressure device; No matter hydraulic lock or oil hydraulic cylinder; Internal leakage always inevitably exists; And hydraulic system is because the pressure that emergency cutoff, energy interruptions, system failure etc. cause descends and also can influence hydraulic cylinder piston and produce stroke in the stop place and change, and this phenomenon is commonly referred to " soft leg ", makes piston to remain unchanged in any travel range, arbitrary position.
The model utility content
The purpose of the utility model is the above-mentioned deficiency to existing technology, and a kind of mechanical interlocking oil hydraulic cylinder is provided, and under bigger axial load, still can realize reliable locking, makes piston and piston rod remain unchanged in any travel range, arbitrary position.
For achieving the above object; The mechanical interlocking oil hydraulic cylinder of the utility model comprises cylinder barrel, end cap, guide sleeve, piston rod, piston, Sealing and rodless cavity hydraulic fluid port, it is characterized in that cylinder barrel and piston are interference fit; In piston rod, be provided with oil-through hole; In piston, be provided with the connection oil circuit, the inner port of oil-through hole communicates with being connected oil circuit, and the external port of oil-through hole is positioned on the outer piston rod of guide sleeve; This external port is as the release hydraulic fluid port, also is provided with the annular oil guide slot more than connecting that oil circuit communicates vertically at the outer surface of piston.
When the release hydraulic fluid port feeds high-pressure oil, cylinder barrel generation expanding distortion, cylinder barrel and piston become Spielpassung by interference fit, and piston can be done straight reciprocating motion; After the off-load of release hydraulic fluid port, cylinder barrel resiles, and latching ram, piston can rest on the arbitrary position in the travel range, thereby reaches the purpose of locking;
As the further improvement of the utility model, also be provided with outlet valve in the external port of oil-through hole; In case of necessity, can get rid of the air in the oil-through hole, be convenient to the feeding of pressure oil through outlet valve;
Further improvement as the utility model is embedded the copper layer at outer surface of piston; Can prevent that inner wall of cylinder is pulled under greater than the external force effect of coupling mechanism force;
As the further improvement of the utility model, also be provided with the rod chamber hydraulic fluid port at the front end of cylinder barrel; Make locking function also can be used for two-way cylinder;
In sum, the utility model still can be realized reliable locking under bigger axial load, makes piston and piston rod remain unchanged in any travel range, arbitrary position.
Description of drawings
Fig. 1 is the utility model embodiment's a plan view.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
By shown in Figure 1, this mechanical interlocking oil hydraulic cylinder comprises cylinder barrel 1, end cap 2, guide sleeve 3, piston rod 4, piston 5, Sealing 6, rod chamber hydraulic fluid port 7 and rodless cavity hydraulic fluid port 8; Cylinder barrel 1 is an interference fit with piston 5, is embedded copper layer 5a at piston 5 outer surfaces, in piston rod 4, is provided with oil-through hole 9; In piston 5, be provided with and connect oil circuit 10; The inner port of oil-through hole 9 communicates with being connected oil circuit 10, and the external port of oil-through hole 9 is positioned on the piston rod 4 outside the guide sleeve 3, and this external port is as release hydraulic fluid port 11; Also be provided with outlet valve 12 in this external port, also be provided with and be connected the seven roads annular oil guide slot 13 that oil circuit 10 communicates vertically at the outer surface of piston 5.
During use, when release hydraulic fluid port 11 fed high-pressures oil, expanding distortion took place in cylinder barrel 1, and cylinder barrel 1 and piston 5 become Spielpassung by interference fit, and piston 5 can be done straight reciprocating motion; After 11 off-loads of release hydraulic fluid port, cylinder barrel 1 resiles, and latching ram 5, piston 5 can rest on the arbitrary position in the travel range, thereby reaches the purpose of locking; The ring-like oil guide slot 13 in seven roads, making the cylinder barrel dilatancy is the cylindrical of rule, but not single cydariform is convenient to moving flexibly of piston 5; In case of necessity, can get rid of the air in the oil-through hole 9, be convenient to the feeding of pressure oil through outlet valve 12; Copper layer 5a can prevent that inner wall of cylinder is pulled under greater than the external force effect of coupling mechanism force.
Claims (4)
1. mechanical interlocking oil hydraulic cylinder; Comprise cylinder barrel, end cap, guide sleeve, piston rod, piston, Sealing and rodless cavity hydraulic fluid port; It is characterized in that cylinder barrel and piston are interference fit, in piston rod, be provided with oil-through hole, in piston, be provided with the connection oil circuit; The inner port of oil-through hole be connected oil circuit and communicate; The external port of oil-through hole is positioned on the outer piston rod of guide sleeve, and this external port is as the release hydraulic fluid port, also is provided with the annular oil guide slot more than connecting that oil circuit communicates vertically at the outer surface of piston.
2. mechanical interlocking oil hydraulic cylinder according to claim 1 is characterized in that also being provided with outlet valve in the external port of oil-through hole.
3. mechanical interlocking oil hydraulic cylinder according to claim 1 and 2 is characterized in that being embedded the copper layer at outer surface of piston.
4. mechanical interlocking oil hydraulic cylinder according to claim 1 and 2 is characterized in that also being provided with the rod chamber hydraulic fluid port at the front end of cylinder barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200128181U CN202451514U (en) | 2012-01-12 | 2012-01-12 | Mechanical locking hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200128181U CN202451514U (en) | 2012-01-12 | 2012-01-12 | Mechanical locking hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202451514U true CN202451514U (en) | 2012-09-26 |
Family
ID=46867380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200128181U Expired - Lifetime CN202451514U (en) | 2012-01-12 | 2012-01-12 | Mechanical locking hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202451514U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214165A (en) * | 2014-04-25 | 2014-12-17 | 东南大学 | Double-port supporting locking oil cylinder and control method of double-port supporting locking oil cylinder |
| CN108609558A (en) * | 2018-04-20 | 2018-10-02 | 北京航天发射技术研究所 | A kind of perpendicular turnover device of big argument based on optimization design |
| CN112081792A (en) * | 2020-07-29 | 2020-12-15 | 太原重工股份有限公司 | Piston assembly with locking function |
-
2012
- 2012-01-12 CN CN2012200128181U patent/CN202451514U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214165A (en) * | 2014-04-25 | 2014-12-17 | 东南大学 | Double-port supporting locking oil cylinder and control method of double-port supporting locking oil cylinder |
| CN108609558A (en) * | 2018-04-20 | 2018-10-02 | 北京航天发射技术研究所 | A kind of perpendicular turnover device of big argument based on optimization design |
| CN112081792A (en) * | 2020-07-29 | 2020-12-15 | 太原重工股份有限公司 | Piston assembly with locking function |
| CN112081792B (en) * | 2020-07-29 | 2022-11-08 | 太原重工股份有限公司 | Piston assembly with locking function |
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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: 20120926 |
|
| CX01 | Expiry of patent term |