CN201810598U - Hydraulic one-way lock for crane descending valve - Google Patents
Hydraulic one-way lock for crane descending valve Download PDFInfo
- Publication number
- CN201810598U CN201810598U CN2010205437549U CN201020543754U CN201810598U CN 201810598 U CN201810598 U CN 201810598U CN 2010205437549 U CN2010205437549 U CN 2010205437549U CN 201020543754 U CN201020543754 U CN 201020543754U CN 201810598 U CN201810598 U CN 201810598U
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- valve
- hydraulic
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- lock
- way valve
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Abstract
The utility model discloses a hydraulic one-way lock for a crane descending valve. The hydraulic one-way lock for the crane descending valve comprises a valve body with an oil inlet, an oil outlet and an oil duct, a piston and a one-way valve which are arranged in the valve body, and a screw plug. The one-way valve comprises a spring, a valve bush and a valve spool, and is characterized in that: the valve bush and the valve spool are arranged at intervals in the radial direction. The one-way valve can be closed after seconds so that time difference between the closing of the hydraulic one-way lock and the closing of a two-way hydraulic lock on a support oil cylinder is formed. The purpose of firstly closing the support oil cylinder and then the hydraulic one-way lock is achieved, the fully unloading of a rear cavity of the hydraulic one-way lock is ensured, and the faulty action of the support is avoided.
Description
Technical field
The utility model relates to the unidirectional lock of a kind of hydraulic pressure, especially for the get off unidirectional lock of hydraulic pressure of valve of hoist.
Background technique
Hoist is got off before valve is mainly used in the crane operation, and Control of Automobile crane horizontal, vertical leg flexible reaches and support the fuselage of getting on the bus, and guarantees to get on the bus steadily, the purpose of the operation of being convenient to get on the bus; It is mainly by front end oil inlet and oil return valve body, selects valve body, Pilot operated check valve group, four to connect or five connects commutate valve body and end and connect valve body and form, and the unidirectional lock of this hydraulic pressure is located in to be selected valve body to connect with four or five even commutate between the valve body.The unidirectional lock of existing hydraulic pressure, comprise the valve body that is provided with filler opening, oil outlet and oil duct, be loaded on piston and one-way valve and plug screw in the valve body, described one-way valve comprises spring, valve pocket and spool, and the spring chamber at spring place links to each other by the aperture on the spool step cylindrical with the one-way valve back cavity that oil outlet communicates; Before the crane loading weight, when all support oil cylinders were in extended position, the unidirectional lock of hydraulic pressure this moment cut out, and it is non-leakage to play the whole landing leg hydraulic cylinder rod chamber pressure oils of sealing; When the crane loading weight finished, all support oil cylinders will be regained, and at this moment the piston back cavity enters pressure oil and promotes the unidirectional lock of hydraulic pressure and open, thereby the hydraulic oil in the landing leg hydraulic cylinder rod chamber all flows back to the purpose that fuel tank reaches the withdrawal supporting leg through Pilot operated check valve.
But the unidirectional lock of this hydraulic pressure does not have the supporting leg of preventing misoperation function, so-called supporting leg misoperation, mainly show on main frame: all supporting legs support (comprising that the 5th supporting leg is stressed), again after the withdrawal of the 5th supporting leg, press left front, right front, left back, right back any one handle or a plurality of, respective leg has rebound phenomenon; When receiving the 5th supporting leg separately simultaneously, when the 5th supporting leg handle returns meta, oil cylinder has automatic rebound phenomenon, above phenomenon is freely not cause owing to closed check valve excessive velocities in the unidirectional lock of hydraulic pressure makes the off-load of one-way valve back cavity, this is because spring chamber communicating by the aperture on the one-way valve step cylindrical and one-way valve back cavity, thereby make that the pressure in check valve spring chamber is identical with the pressure of back cavity, so this one-way valve just can be closed rapidly under the effect of spring force when main valve is closed, and almost there is not the time difference between the closing of bidirectional hydraulic lock on the support oil cylinder, make the off-load fully of the unidirectional lock back cavity of hydraulic pressure, thereby cause the supporting leg misoperation.
The model utility content
The purpose of this utility model is the above-mentioned deficiency at prior art, a kind of hoist unidirectional lock of valve hydraulic pressure of getting off is provided, its one-way valve has the function that the several seconds that lags behind closes, thereby make this fluid-control one-way lock close and support oil cylinder between the closing of bidirectional hydraulic lock formation time poor, reach the purpose that the support oil cylinder reversible lock cuts out prior to the unidirectional lock of this hydraulic pressure, can guarantee the complete off-load of the unidirectional lock back cavity of this hydraulic pressure, thereby reach the purpose that prevents the supporting leg misoperation.
For achieving the above object, the hoist of the present utility model unidirectional lock of valve hydraulic pressure of getting off, comprise the valve body that is provided with filler opening, oil outlet and oil duct, be loaded on piston and one-way valve and plug screw in the valve body, described one-way valve comprises spring, valve pocket and spool, it is characterized in that valve pocket and spool radially are being the gap setting;
The utility model but communicates with gap between the valve pocket by spool because the back cavity of one-way valve does not directly communicate with spring chamber, and when support oil cylinder will be regained, at this moment the piston back cavity enters pressure oil promotion one-way valve opens; When supporting leg stops to move, the fluid of one-way valve back cavity slowly enters the spring chamber of one-way valve and one-way valve is slowly closed through the gap between spool and the valve pocket, thereby make this fluid-control one-way lock close and support oil cylinder between the closing of bidirectional hydraulic lock formation time poor, reach the purpose that the support oil cylinder reversible lock cuts out prior to the unidirectional lock of this hydraulic pressure, can guarantee the complete off-load of the unidirectional lock back cavity of this hydraulic pressure, thereby reach the purpose that prevents the supporting leg misoperation.
Description of drawings
Fig. 1 is a plan view of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As shown in Figure 1, this hoist unidirectional lock of valve hydraulic pressure of getting off, comprise the valve body 3 that is provided with filler opening 1, oil outlet 2 and oil duct, be loaded on piston 4 and one-way valve and plug screw 5 in the valve body 3, described one-way valve comprises spring 6, valve pocket 7 and spool 8, and valve pocket 7 and spool 8 are provided with radially being the gap;
The utility model but communicates with gap between the valve pocket 8 by spool 7 because the back cavity of one-way valve does not directly communicate with spring chamber, and when support oil cylinder will be regained, at this moment the piston back cavity enters pressure oil promotion one-way valve opens; When supporting leg stops to move, the fluid of one-way valve back cavity slowly enters the spring chamber of one-way valve and one-way valve is slowly closed through the gap between spool 7 and the valve pocket 8, thereby make this fluid-control one-way lock close and support oil cylinder between the closing of bidirectional hydraulic lock formation time poor, reach the purpose that the support oil cylinder reversible lock cuts out prior to the unidirectional lock of this hydraulic pressure, can guarantee the complete off-load of the unidirectional lock back cavity of this hydraulic pressure, thereby reach the purpose that prevents the supporting leg misoperation.
Claims (1)
1. a hoist unidirectional lock of valve hydraulic pressure of getting off, comprise the valve body that is provided with filler opening, oil outlet and oil duct, be loaded on piston and one-way valve and plug screw in the valve body, described one-way valve comprises spring, valve pocket and spool, it is characterized in that valve pocket and spool radially are being the gap setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205437549U CN201810598U (en) | 2010-09-26 | 2010-09-26 | Hydraulic one-way lock for crane descending valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205437549U CN201810598U (en) | 2010-09-26 | 2010-09-26 | Hydraulic one-way lock for crane descending valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201810598U true CN201810598U (en) | 2011-04-27 |
Family
ID=43893540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205437549U Expired - Fee Related CN201810598U (en) | 2010-09-26 | 2010-09-26 | Hydraulic one-way lock for crane descending valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201810598U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213242A (en) * | 2011-07-19 | 2011-10-12 | 宁波克泰液压有限公司 | Thread plug-in type electronic control hydraulic lock |
| CN104235120A (en) * | 2014-08-20 | 2014-12-24 | 吉林市祥隆铁路救援技术开发有限公司 | Hydraulic lock with emergency unloading function for rescue recovery equipment of large-sized track maintenance machine |
-
2010
- 2010-09-26 CN CN2010205437549U patent/CN201810598U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213242A (en) * | 2011-07-19 | 2011-10-12 | 宁波克泰液压有限公司 | Thread plug-in type electronic control hydraulic lock |
| CN102213242B (en) * | 2011-07-19 | 2013-12-11 | 宁波克泰液压有限公司 | Thread plug-in type electronic control hydraulic lock |
| CN104235120A (en) * | 2014-08-20 | 2014-12-24 | 吉林市祥隆铁路救援技术开发有限公司 | Hydraulic lock with emergency unloading function for rescue recovery equipment of large-sized track maintenance machine |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20180926 |