CN108895050A - A kind of structure of novel load sensitive valve feedback oil circuit - Google Patents
A kind of structure of novel load sensitive valve feedback oil circuit Download PDFInfo
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- CN108895050A CN108895050A CN201811061925.1A CN201811061925A CN108895050A CN 108895050 A CN108895050 A CN 108895050A CN 201811061925 A CN201811061925 A CN 201811061925A CN 108895050 A CN108895050 A CN 108895050A
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- valve
- feedback
- port
- load
- actuator port
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to a kind of structures of novel load sensitive valve feedback oil circuit, belong to hydraulic valve technology.Including valve body, oil inlet P, oil return inlet T, actuator port A, actuator port B, feedback port LsA and feedback port LsB are had on the valve body, the valve body is provided with valve rod, the valve rod center is equipped with load pressure feedback channel, the load pressure feedback channel both ends in the load pressure feedback channel and actuator port A and actuator port B normal open, the valve rod are sealed using screw plug.The beneficial effects of the invention are as follows：Structure of the invention is compact, at low cost, installs easy to operate, it using the method that the check valve of load pressure signal will be selected to be embedded in multipath valve rod, realizes and simplifies multi-way valve oil circuit, reduce valve body difficulty of processing and cost, it avoids load feedback oil circuit too long simultaneously, load feedback signal is caused to be distorted.
Description
Technical field
The present invention relates to a kind of structures of novel load sensitive valve feedback oil circuit, belong to hydraulic valve technology.
Background technique
Hydraulic multitandem valve is widely used in the hydraulic systems such as engineering machinery, agricultural machinery, ship, to entire hydraulic system
Play control action.The type of multi-way valve has out center six-way valve, load-sensitive valve, downstream pressure compensation multi-way valve, special function
Energy multi-way valve, with center six-way valve and load-sensitive valve is most widely out, load-sensitive valve, which has, to be fed back with feedback channel,
And resistance to compression fluctuation is needed, damping matching, complexity is higher than other kinds of multi-way valve.According to the multi-way valve of different latus rectums
It selects different feedback channels extremely important, all plays the role of not only for light-weight design, processing technology etc. extremely important.
Summary of the invention
Place in order to overcome the above-mentioned deficiencies of the prior art, the present invention provide a kind of novel load sensitive valve feedback oil circuit
Structure is realized using the method that the check valve of load pressure signal will be selected to be embedded in multipath valve rod and is simplified multi-way valve oil circuit.
The present invention is achieved through the following technical solutions：A kind of structure of novel load sensitive valve feedback oil circuit, it is special
Sign is：Including valve body, oil inlet P, oil return inlet T, actuator port A, actuator port B, feedback are had on the valve body
Mouth LsA and feedback port LsB, the valve body are provided with valve rod, and the valve rod center is equipped with load pressure feedback channel, described
Load pressure feedback channel and actuator port A and actuator port B normal open, the load pressure feedback channel both ends of the valve rod
It is sealed using screw plug, the actuator port A, actuator port B pass through check valve and load pressure feedback channel connection.
Further, the load pressure feedback channel is using machined after forming.
Further, feedback port LsA and feedback port LsB is to be selectively turned on, and have clear with load on the valve body
Corresponding relationship, i.e. LsA connects with A mouthful loads, LsB and B mouthfuls of loads connections.
The beneficial effects of the invention are as follows：Structure of the invention is compact, at low cost, and installation is easy to operate, and use will select load
Pressure signal check valve insertion multipath valve rod method, realize simplify multi-way valve oil circuit, reduce valve body difficulty of processing and at
This, while avoiding load feedback oil circuit too long, cause load feedback signal to be distorted.
Detailed description of the invention
Below according to drawings and examples, the present invention is further described.
Fig. 1 is valve rod and valve body installation diagram of the invention.
In figure：1, screw plug, 2, valve rod, 3, check valve, 4, load pressure feedback channel, 5, valve body.
Specific embodiment
A kind of structure of novel load sensitive valve feedback oil circuit as shown in Figure 1, it is characterised in that：It is described including valve body 5
Valve body 5 on have oil inlet P, oil return inlet T, actuator port A, actuator port B, feedback port LsA and feedback port LsB, institute
The valve body 5 stated is provided with valve rod 2, and 2 center of valve rod is equipped with load pressure feedback channel 4, the load pressure feedback
Channel 4 and actuator port A and actuator port B normal open do not change, the load pressure feedback of the valve rod 2 with valve rod movement
4 both ends of channel are sealed using screw plug 1.
Actuator port A, the actuator port B passes through check valve 3 and 4 connection of load pressure feedback channel.
The load pressure feedback channel 4 is using machined after forming.
Feedback port LsA and feedback port LsB is to be selectively turned on, and have specific corresponding pass with load on the valve body 5
System, i.e. LsA are connected with A mouthfuls of loads, and LsB is connected with B mouthfuls of loads.
The valve rod 5 obtains pressure instruction start-up operation, and valve rod 5 moves right, and actuator port B starts to work, oil inlet
Mouth P and actuator port B is connected, and actuator port B pressure passes into 2 central loading pressure feedback channel of valve rod by check valve 3
4,2 central loading pressure feedback channel of valve rod and feedback port LsB are connected, and load pressure passes through channel transmitting corresponding on valve body 2
It goes out, controls two-way pressure-compensated valve or three-way flowrate valve or Ls mouthfuls of pump, complete the transmitting of whole system pressure and adapted to flow.
Claims (3)
1. a kind of structure of novel load sensitive valve feedback oil circuit, it is characterised in that：Including valve body（6）, the valve body（6）On
Have oil inlet P, oil return inlet T, actuator port A, actuator port B, feedback port LsA and feedback port LsB, the valve body
（6）It is provided with valve rod（2）, the valve rod（2）Center is equipped with load pressure feedback channel（4）, the load pressure feedback
Channel（4）With actuator port A and actuator port B normal open, the valve rod（2）Load pressure feedback channel（4）Both ends use
Screw plug（1）Sealing, the actuator port A, actuator port B pass through check valve（3）With load pressure feedback channel（4）Connection.
2. a kind of structure of novel load sensitive valve feedback oil circuit according to claim 1, it is characterised in that：Described is negative
Carry pressure feedback channel（4）Using machined after forming.
3. a kind of structure of novel load sensitive valve feedback oil circuit according to claim 1, it is characterised in that：The valve
Body（6）Upper feedback port LsA and feedback port LsB is to be selectively turned on, and have specific corresponding relationship with load, i.e. feedback port LsA
It loads and connects with actuator port A, feedback port LsB and actuator port B load are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811061925.1A CN108895050B (en) | 2018-09-12 | 2018-09-12 | Novel structure of feedback oil circuit of load sensitive valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811061925.1A CN108895050B (en) | 2018-09-12 | 2018-09-12 | Novel structure of feedback oil circuit of load sensitive valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108895050A true CN108895050A (en) | 2018-11-27 |
| CN108895050B CN108895050B (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811061925.1A Active CN108895050B (en) | 2018-09-12 | 2018-09-12 | Novel structure of feedback oil circuit of load sensitive valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN108895050B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61236901A (en) * | 1985-04-15 | 1986-10-22 | Kayaba Ind Co Ltd | Hydraulic controller for regeneration and preferential use |
| US5161575A (en) * | 1990-06-22 | 1992-11-10 | Zexel Corporation | Direction selector valve having load-sensing function |
| CN2844532Y (en) * | 2005-07-19 | 2006-12-06 | 四川长江液压件有限责任公司 | Multi-path switching valve of hydraulic crane |
| CN105545850A (en) * | 2014-10-28 | 2016-05-04 | 徐工集团工程机械股份有限公司 | Load-sensitive functional valve, load-sensitive multi-way valve, load-sensitive hydraulic system and mini excavator |
| CN108331942A (en) * | 2018-04-20 | 2018-07-27 | 江苏恒立液压科技有限公司 | Core assembly, multi-way valve and walking machine hydraulic system |
-
2018
- 2018-09-12 CN CN201811061925.1A patent/CN108895050B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61236901A (en) * | 1985-04-15 | 1986-10-22 | Kayaba Ind Co Ltd | Hydraulic controller for regeneration and preferential use |
| US5161575A (en) * | 1990-06-22 | 1992-11-10 | Zexel Corporation | Direction selector valve having load-sensing function |
| CN2844532Y (en) * | 2005-07-19 | 2006-12-06 | 四川长江液压件有限责任公司 | Multi-path switching valve of hydraulic crane |
| CN105545850A (en) * | 2014-10-28 | 2016-05-04 | 徐工集团工程机械股份有限公司 | Load-sensitive functional valve, load-sensitive multi-way valve, load-sensitive hydraulic system and mini excavator |
| CN108331942A (en) * | 2018-04-20 | 2018-07-27 | 江苏恒立液压科技有限公司 | Core assembly, multi-way valve and walking machine hydraulic system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108895050B (en) | 2020-10-09 |
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| PB01 | Publication | ||
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20210429 Address after: 221004 No. 18, Peach Road, Xuzhou economic and Technological Development Zone, Jiangsu, Xuzhou Patentee after: Xuzhou Amakai Hydraulic Technology Co.,Ltd. Address before: 221004 No. 18, Peach Road, Jinshan Development Zone, Xuzhou, Jiangsu Patentee before: XCMG XUZHOU XUGONG HYDRAULIC PARTS Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20181127 Assignee: XCMG XUZHOU XUGONG HYDRAULIC PARTS Co.,Ltd. Assignor: Xuzhou Amakai Hydraulic Technology Co.,Ltd. Contract record no.: X2022320000116 Denomination of invention: A new feedback oil circuit structure of load sensing valve Granted publication date: 20201009 License type: Common License Record date: 20220616 |
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| EE01 | Entry into force of recordation of patent licensing contract |