CN200978847Y - Novel control valve assembly - Google Patents
Novel control valve assembly Download PDFInfo
- Publication number
- CN200978847Y CN200978847Y CN 200720037075 CN200720037075U CN200978847Y CN 200978847 Y CN200978847 Y CN 200978847Y CN 200720037075 CN200720037075 CN 200720037075 CN 200720037075 U CN200720037075 U CN 200720037075U CN 200978847 Y CN200978847 Y CN 200978847Y
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- CN
- China
- Prior art keywords
- valve
- valves
- directional control
- way
- directional selecting
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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 - Fee Related
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Abstract
A new typed controlling valve assembly relates to an elevator hydraulic pressure controlling valve assembly, which is composed by a valve body with a plurality of passages equipped inside, plurality of electric and magnetic directional selecting valve, an overflowing valve, an accumulator, a one-way valve, an inserted shuttle valve and a liquid controlling directional selecting valve, wherein the upper plane of the valve body is equipped with a plurality of electric and magnetic directional selecting valves and overflowing valves, the overflowing valve is connected with the accumulator, both sides are respectively connected with the inserted shuttle valve, the other side is connected with a plurality of one-way valve, the bottom face is connected with two liquid controlling directional selecting valves, a component valve is equipped between the two liquid controlling directional selecting valves on the bottom face and the valve body, the component valve is composed by the valve body, a relief valve and three one-way valves, the relief valve is equipped on an oil inlet of the two liquid controlling directional selecting valves and is parallel connected with a one-way valve with the relief valve, and the other two one-way valves are respectively equipped on the oil outlet of the two liquid controlling directional selecting valve. The utility model can effectively avoid that the high pressure of the oil chamber counteracts on the liquid controlling directional selecting valve and prevents that the oil back pressure attacks the liquid controlling directional selecting valve of a controlling brake.
Description
Technical field
The utility model relates to a kind of hoist hydraulic control valve assembly, the integrated control valve assembly that uses in particularly a kind of system for hydraulic system of truck crane.
Background technique
At present, what truck crane hydraulic control valve assembly was adopted is made up of a plurality of independently valves for general use, pipe joint, pipe, between valve and valve, be connected with pipe by pipe joint, because the tie point of hoist hydraulic control valve assembly is many, thereby cause the leakage of oil link to increase, make the poor reliability of hydraulic control system, the arrangement of this valve and pipeline not only disperses, structure becomes loaded down with trivial details and takes up space greatly, also is unfavorable for maintenance.State Intellectual Property Office's application number is 01244458.8, and name is called the patented technology of " hoist integrated control valve assembly ", discloses a kind of integration height, controls the valve assembly of hoist hydraulic control easily, and it is with the integrated control of each action control of hoist.But have often malfunctioning problem of break in this technological scheme, its reason is that the solenoid directional control valve and the high-pressure oil passage of control brake device oil circuit is straight-through, in long-time running, can cause this selector valve malfunctioning, when serious, even can have an accident.
The model utility content
The purpose of this utility model provides a kind of compact structure, and the life-span is long, and the high novel control valve assembly that is used for truck crane of braking control oil channel reliability.
The purpose of this utility model be achieved in that by inside be provided with the valve body of some passages, some solenoid directional control valves, relief valve, accumulator, one-way valve, plug-in type shuttle valve, the pilot operated directional control valve that is connected on the valve body formed, the plane connects a plurality of solenoid directional control valves and relief valve on valve body, relief valve connects accumulator, bi-side respectively connect a plug-in type shuttle valve, the another side connects a plurality of one-way valves, and the bottom surface connects two pilot operated directional control valves; Be provided with combination brake switch and proporting between two pilot operated directional control valves of bottom surface and valve body, combination brake switch and proporting is made up of valve body, reduction valve, three one-way valves; Reduction valve is located at the filler opening place of two pilot operated directional control valves, an one-way valve in parallel with reduction valve; Two one-way valves are located at the oil outlet place of two pilot operated directional control valves respectively in addition.
The utility model has been set up reduction valve and one-way valve on the control oil channel of control brake device, changed high pressure oil on-line operation in the past in pilot operated directional control valve, but by behind the reduction valve, works in pilot operated directional control valve again; The high pressure acting in opposition that the one-way valve of establishing at pilot operated directional control valve oil outlet place can effectively be avoided fuel tank prevents that in pilot operated directional control valve return pressure from impacting the pilot operated directional control valve of control brake device.The utility model has changed the pilot operated directional control valve long-term work of control brake device in the past in hyperbaric environment, the situation of damaging in real work, is finished commutation and is not needed too high oil pressure easily, after adding reduction valve, one-way valve, prolonged the working life of this two pilot operated directional control valve.
Description of drawings
Fig. 1 is a structural representation of the present utility model
1 is valve body among the figure, the 2nd, and hydraulic fluid port, the 3rd, solenoid directional control valve, the 4th, combination brake switch and proporting, 5 reduction valve, the 6th, accumulator, the 7th, pilot operated directional control valve.
Fig. 2 is the plan view of Fig. 1
Fig. 3 is the right elevation of Fig. 1
Fig. 4 is a fundamental diagram of the present utility model
Embodiment
As figure, the utility model by inside be provided with the valve body 1 of some passages, some solenoid directional control valves 3, relief valve, accumulator 6, one-way valve, plug-in type shuttle valve, the pilot operated directional control valve 7 that is connected on the valve body 1 formed, the plane connects a plurality of solenoid directional control valves 3 and relief valve 6 on valve body 1, relief valve connects accumulator 6, bi-side respectively connect a plug-in type shuttle valve, the another side connects a plurality of one-way valves, and the bottom surface connects two pilot operated directional control valves 7; Be provided with combination brake switch and proporting 4 between two pilot operated directional control valves 7 of bottom surface and valve body 1, combination brake switch and proporting 4 is made up of valve body, reduction valve 5, two one-way valves; Reduction valve 5 is located at the filler opening place of two pilot operated directional control valves 7, and two one-way valves are located at the oil outlet place of two pilot operated directional control valves 7 respectively.
As Fig. 4, during work, some hydraulic fluid ports 2 that its surface of control valve assembly of the present utility model is offered link to each other with the oil circuit of each action component respectively; Forward and backward reduction valve 5 and three one-way valves of being connected with of two pilot operated directional control valves on the oil circuit of control brake device action wherein.
Claims (1)
1, novel control valve assembly, by inside be provided with the valve body of some passages, some solenoid directional control valves, relief valve, accumulator, one-way valve, plug-in type shuttle valve, the pilot operated directional control valve that is connected on the valve body formed, the plane connects a plurality of solenoid directional control valves and relief valve on valve body, relief valve connects accumulator, bi-side respectively connect a plug-in type shuttle valve, the another side connects a plurality of one-way valves, and the bottom surface connects two pilot operated directional control valves; It is characterized in that be provided with combination brake switch and proporting between two pilot operated directional control valves of bottom surface and valve body, combination brake switch and proporting is made up of valve body, reduction valve, three one-way valves; Reduction valve is located at the filler opening place of two pilot operated directional control valves, an one-way valve in parallel with reduction valve; Two one-way valves are located at the oil outlet place of two pilot operated directional control valves respectively in addition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720037075 CN200978847Y (en) | 2007-04-30 | 2007-04-30 | Novel control valve assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720037075 CN200978847Y (en) | 2007-04-30 | 2007-04-30 | Novel control valve assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200978847Y true CN200978847Y (en) | 2007-11-21 |
Family
ID=38979224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720037075 Expired - Fee Related CN200978847Y (en) | 2007-04-30 | 2007-04-30 | Novel control valve assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200978847Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312876A (en) * | 2011-09-07 | 2012-01-11 | 广西柳工机械股份有限公司 | Pressure stabilizing delivery valve |
-
2007
- 2007-04-30 CN CN 200720037075 patent/CN200978847Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312876A (en) * | 2011-09-07 | 2012-01-11 | 广西柳工机械股份有限公司 | Pressure stabilizing delivery valve |
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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: 20071121 Termination date: 20150430 |
|
| EXPY | Termination of patent right or utility model |