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
- Authority
- CN
- China
- Prior art keywords
- valve
- valves
- directional control
- valve body
- way
- Prior art date
- 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
Links
- 239000000945 filler Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract 2
- 230000002441 reversible effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
A novel control valve assembly relates to a crane hydraulic control valve assembly. The energy accumulator consists of a valve body, a plurality of electromagnetic directional valves, an overflow valve, an energy accumulator, a one-way valve, a cartridge shuttle valve and hydraulic control directional valves, wherein the valve body is internally provided with a plurality of channels; a combination valve is arranged between the two hydraulic control reversing valves on the bottom surface and the valve body, and the combination valve consists of a valve body, a pressure reducing valve and three one-way valves; the pressure reducing valve is arranged at the oil inlets of the two hydraulic control reversing valves and is connected with a one-way valve in parallel; the other two check valves are respectively arranged at the oil outlets of the two hydraulic control reversing valves. The utility model discloses can effectively avoid the high pressure reverse action of oil tank to the liquid accuse switching-over valve, prevent the liquid accuse switching-over valve of return pressure impact control stopper.
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102536932A (en) | Compression refuse collector and hydraulic system thereof | |
CN102874704B (en) | Hydraulic system, hoisting mechanism and engineering machinery | |
CN104533886B (en) | A kind of volume adjustable hydraulic pump No Load Start device and method | |
CN202402380U (en) | Compression garbage truck and hydraulic system thereof | |
CN2931433Y (en) | Enclosed up-down hydraulic system | |
CN105545843A (en) | Hydraulic control system of self-propelled hydraulic power traction vehicle | |
CN203582302U (en) | Control valve bank, hydraulic control system and truck crane | |
CN201111563Y (en) | Hydraulic integration liftout valve block | |
CN102400968A (en) | Hydraulic valve, hydraulic system and concrete pumping equipment | |
CN200978847Y (en) | Novel control valve assembly | |
CN203516244U (en) | Fast feed and working feed circuit | |
CN201793316U (en) | Protective device of orange peel bucket hydraulic control system | |
CN108179781A (en) | Loader hydraulic control system | |
CN108146245A (en) | A kind of control system of preventing engine hypervelocity | |
CN201273312Y (en) | Special valve block for jib pump vehicle pumping integration | |
CN102465934B (en) | Hydraulic system | |
CN201507494U (en) | Pilot valve block of loader operation device | |
CN200968276Y (en) | Valve block integrated module used for concrete delivery pump | |
CN101927953A (en) | Protection device for orange peel bucket hydraulic control system | |
CN204284053U (en) | For guide's oil circuit relief arrangement and the pilot hydraulic control system of virtual wall function | |
CN202811607U (en) | Device preventing oil cylinder form moving forward and crane | |
CN102661296A (en) | Hydraulic system and engineering machinery vehicle | |
CN102478031A (en) | Switching valve and pumping system | |
CN205315377U (en) | Steering control valve | |
CN2777259Y (en) | Divided-flow hydraulic control system for main valve of rotating digging drilling machine |
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 |