CN108240366B - A kind of flow divider valve for the hydraulic accessory of excavator - Google Patents
A kind of flow divider valve for the hydraulic accessory of excavator Download PDFInfo
- Publication number
- CN108240366B CN108240366B CN201810073703.5A CN201810073703A CN108240366B CN 108240366 B CN108240366 B CN 108240366B CN 201810073703 A CN201810073703 A CN 201810073703A CN 108240366 B CN108240366 B CN 108240366B
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- valve
- flow
- control chamber
- main control
- oil outlet
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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
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Servomotors (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The present invention relates to a kind of flow divider valves for the hydraulic accessory of excavator, it is characterised in that: including valve block, valve block is equipped with oil inlet, oil outlet and oil return opening；First passage, first passage is interior to be equipped with compensating spool；First main screw plug, which is provided with load pressure feedback ports and nonreturn valve core；Two-position two-way solenoid valve is connected to the return port or is connected to oil outlet to switch main control chamber；Spill valve, after main control cavity pressure reaches certain value, spill valve is opened, and main control chamber is connected to the return port；Flow-rate adjustment valve module is set in valve block, to control the output flow of oil outlet.It is it is a kind of it is simple and reasonable, easy to process, additional work device can access easily to flow divider valve in excavator hydraulic system, it is volume compact, at low cost.
Description
Technical field
The invention belongs to the technical field of hydraulic valve more particularly to a kind of assignment of traffic for the hydraulic accessory of excavator
Valve.
Background technique
In modern excavator hydraulic system, generally need to meet the needs of a tractor serves several purposes and configure according to the actual situation
Increasing additional work device, such as: the original-pack hydraulic configuration of excavator is to meet the executing agencies such as revolution, excavation
Demand, and need to dismantle bucket according to operating condition after user's purchase, load onto the additional work dress such as quartering hammer, tamper, grab bucket
It sets, the metered flow of additional equipment demand is only the 1/3-1/2 of original hydraulic system total flow, and original hydraulic system
The metered flow of middle executing agency's demand will be the total flow of system.Existing excavator hydraulic system is mostly load-reacting pump
System, but the valve group of control additional work device is not provided in the original-pack hydraulic system of excavator, if purchasing the more of complexity
Road valve, then cost is very high, and bulky, therefore how to be realized using the load-sensitive pump hydraulic system on existing machinery
The function of controlling additional work device, is those skilled in the art's technical problem urgently to be solved.
Summary of the invention
The technical problem to be solved by the present invention is to provided for above-mentioned state of the art it is a kind of it is simple and compact for structure,
Flow divider valve for the hydraulic accessory of excavator easy to connect, using the load-sensitive pump hydraulic system energy after the distributing valve
The convenient control realized to additional work device.
The technical scheme of the invention to solve the technical problem is: a kind of flow for the hydraulic accessory of excavator
Distributing valve, it is characterised in that: including valve block, valve block is equipped with oil inlet, oil outlet and oil return opening；First passage, first passage
The upper primary valve with to be connected to oil inlet and oil outlet；Compensating spool is set to first passage and can slide, on compensating spool
Equipped with the main shoulder block to block primary valve；First main screw plug, is set to the first passage left end, and the first main screw plug is equipped with negative
Pressure feedback mouth is carried, forms main control chamber between the first main screw plug and compensating spool, intracavitary be equipped with of main control keeps main shoulder block
The first spring of primary valve trend is opened, the list of control load pressure feedback ports and main control chamber on-off is equipped in the first main screw plug
To spool, when the pressure of main control chamber is greater than the pressure of load pressure feedback ports, nonreturn valve core is opened, the oil liquid of main control chamber
Flow into load pressure feedback ports；First time screw plug is set to the first passage right end, shape between first time screw plug and compensating spool
At secondary control chamber, the first runner of connection primary valve and secondary control chamber is equipped with inside compensating spool；Two-position two-way solenoid valve is set to
In valve block, two-position two-way solenoid valve is connected to the return port switching main control chamber or is connected to oil outlet；Spill valve,
In valve block, after main control cavity pressure reaches certain value, spill valve is opened, and main control chamber is connected to the return port；
Flow-rate adjustment valve module is set in valve block, to control the output flow of oil outlet.
As an improvement, being equipped with the first damper with damping hole in above-mentioned first runner.Ensure that compensating spool is steadily slided
It moves.
As an improvement, interior the second resistance being equipped with damping hole of runner between above-mentioned two-position two-way solenoid valve and oil outlet
Buddhist nun's device.Ensure that compensating spool steadily slides.
Preferably, above-mentioned Flow-rate adjustment valve module includes swivel nut and flow control rod, it is provided in valve block to be connected to out
First through flow hole of hydraulic fluid port and primary valve, the flow control rod are threaded through in swivel nut and can slide, the outer end of flow control rod
Be threaded on swivel nut and it is overhanging be threadedly coupled with locking nut, be provided on the flow control rod periphery wall with it is first through-flow
The first annular slot of hole cooperation determines the output flow of oil outlet by the degree that first annular slot is overlapped with the first through flow hole.
The function that this Flow-rate adjustment valve module is completed is that the openings of sizes of the first through flow hole is controlled by flow control rod, to control out
The output flow of hydraulic fluid port.
Preferably, above-mentioned spill valve includes valve pocket, poppet valve core, second spring and overflow valve adjusting rod, on valve pocket
It is provided with the overflow valve port of connection valve pocket inner cavity and main control chamber, valve pocket inner cavity is connected to the return port, and the poppet valve core is set to valve pocket
Inner cavity simultaneously has second spring top to hold holding to block overflow valve port trend, and the overflow valve adjusting rod is threaded on valve pocket simultaneously
It is contradicted with poppet valve core.
Compared with the prior art, the advantages of the present invention are as follows: when two-position two-way solenoid valve obtains it is electric when, compensating spool is towards secondary valve
Mouthful direction mobile trend becomes apparent from, and supplies oil outlet by the flow that Flow-rate adjustment valve module is set up, compensating spool be guarantee by
Pressure compensation is carried out to the flow of oil outlet according to the flow that Flow-rate adjustment valve module is set up, guarantees that output flow is not negative by oil outlet
Carrying variation influences, and nonreturn valve core selects to arrive oil outlet pressure feedback according to the size of oil outlet and load pressure feedback ports pressure
External shuttle valve finally senses load sensitive pump, realizes that satisfaction increases the hydraulic system demand after additional work device
Variable Control.If when oil outlet pressure overload, spill valve is returned the oil liquid overflow of main control chamber to oil return opening, then recuperation valve
Core even completely closes primary valve to close to the movement of primary valve direction with the output flow for reducing oil outlet；Two-position two-way solenoid valve
Must not electricity when, control chamber is connected to the return port, compensating spool oil inlet pressure effect under, close primary valve, oil outlet without
Flow.The control that oil outlet flow can be exported by automatically controlled convenient realization in this way.The flow divider valve is used in and is excavated
In machine hydraulic system, it may be convenient to which and existing hydraulic system is attached, volume compact, easy to control, at low cost.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the embodiment of the present invention；
Fig. 2 is the sectional view along A-A of Fig. 1；
Fig. 3 is the hydraulic schematic diagram of the embodiment of the present invention；
Fig. 4 is the embodiment of the present invention using hydraulic schematic diagram.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
It as shown in figures 1-4, is a preferred embodiment of the present invention.
A kind of flow divider valve for the hydraulic accessory of excavator, including
Valve block 1, valve block 1 are equipped with oil inlet P, oil outlet A and oil return inlet T；
First passage 11 has the primary valve 1c to be connected to oil inlet P and oil outlet A on first passage 11；
Compensating spool 3 is set to first passage 11 and can slide, and compensating spool 3 is equipped with the master to block primary valve 1c
Shoulder block 3a,；The both ends of first passage 11 are respectively equipped with the first main screw plug 8a and first time screw plug 9a blocks, and set on the first main screw plug
There is load pressure feedback ports LS, forms main control chamber 1a between the first main screw plug 8a and compensating spool 3, set in the first main screw plug 8a
There is the nonreturn valve core 13 of control load pressure feedback ports LS and main control chamber 1a on-off, when the pressure of main control chamber 1a is greater than load
When the pressure of pressure feedback mouth LS, nonreturn valve core 13 is opened, and the oil liquid of main control chamber 1a flows into load pressure feedback ports LS, master control
The first spring 4 for making main shoulder block 3a stay open primary valve 1c trend is equipped in chamber 1a processed；First time screw plug 9a and compensating spool 3
Between form secondary control chamber 1b, be equipped with the first runner 31 of connection primary valve 1c and secondary control chamber 1b inside compensating spool 3, first
The first damper 7a with damping hole is equipped in runner 31,.
Two-position two-way solenoid valve 10 is set in valve block 1, and two-position two-way solenoid valve 10 is to switch main control chamber 1a and oil return
Mouth T connection is connected to oil outlet A；Being equipped in runner between two-position two-way solenoid valve 10 and oil outlet A has damping hole
The second damper 7b.
Spill valve 5 is set in valve block 1, and after pressure reaches certain value in main control chamber 1a, spill valve 5 is opened
It opens, main control chamber 1a is connected to oil return inlet T；Spill valve 5 includes valve pocket 51, poppet valve core 52, second spring 53 and overflow valve
Adjusting rod 54 is provided with the overflow valve port 511 of connection 51 inner cavity of valve pocket and main control chamber 1a, 51 inner cavity of valve pocket and oil return on valve pocket 51
Mouth T connection, poppet valve core 52, which is set to 51 inner cavity of valve pocket and has the top of second spring 53 to hold holding, blocks 511 trend of overflow valve port, institute
Overflow valve adjusting rod 54 is stated to be threaded on valve pocket 51 and contradict with poppet valve core 52.
Flow-rate adjustment valve module 6 is set in valve block 1, to control the output flow of oil outlet A.Flow-rate adjustment valve module 6
Including swivel nut 61 and flow control rod 62, the first through flow hole 611 to be connected to oil outlet A and primary valve 1c is provided in valve block 1,
Flow control rod 62 is threaded through in swivel nut 61 and can slide, and the outer end of flow control rod 62 is threaded on swivel nut 61 and overhanging
It is threadedly coupled with locking nut 63, the first ring with the cooperation of the first through flow hole 611 is provided on 62 periphery wall of flow control rod
Shape slot 621 determines the output flow of oil outlet A by the degree that first annular slot 621 is overlapped with the first through flow hole 611.
The operation principle and process of this flow divider valve is as follows:
The function that Flow-rate adjustment valve module 6 is completed is big by the opening of the first through flow hole 611 of control of flow control rod 62
It is small, to control the output flow of oil outlet A；The function of compensating spool 3 is by by the oil inlet of Flow-rate adjustment valve module 6
Pressure introduces secondary control chamber 1b, and the pressure of the oil outlet (i.e. oil outlet A) of Flow-rate adjustment valve module 6 is introduced main control chamber 1a,
The left and right ends of compensating spool 3 are respectively acting on, are compared with the first spring 4, to guarantee main control chamber 1a and secondary control chamber
Pressure difference is constant (namely 6 front and back pressure difference of Flow-rate adjustment valve module is constant) before and after 1b.Check valve 13 is responsible for the pressure of oil outlet A
Sense the feedback port of load sensitive pump.
1, when two-position two-way solenoid valve 10 must not be electric, main control chamber 1a passes through the valve port of two-position two-way solenoid valve 10 and returns
Hydraulic fluid port T-phase is logical；The oil liquid of oil inlet P enters secondary control chamber 1b after primary valve 1c, first runner 31, and compensating spool 3 is to moving to left
Dynamic, primary valve 1c is essentially off by main shoulder block 3a thereon, keeps minute opening only to guarantee pressure that compensating spool 3 moves to left.
2, when two-position two-way solenoid valve 10 it is electric when, main control chamber 1a passes through 10 inner flow passage of two-position two-way solenoid valve and the
It is communicated after two damper 7b with oil outlet A, no longer returns oil return inlet T, the pressure of such main control chamber 1a is the anti-of oil outlet A pressure
It answers, compensating spool 3 realizes pressure compensation (maintaining pressure difference constant to guarantee that output flow is stablized), if that is, oil outlet
When the flow of the adjusting of Flow-rate adjustment valve module 6 is not achieved in A flow, the pressure difference of secondary control chamber 1b and main control chamber 1a are smaller, compensation
Spool 3 removes big primary valve 1c in the active force lower right of the first spring 4a；If oil outlet A flow is more than Flow-rate adjustment valve module 6
When the flow of adjusting, the pressure difference of secondary control chamber 1b and main control chamber 1a are larger, and compensating spool 3 is under the active force of the first spring 4a
Move to left the aperture for reducing primary valve 1c.
In use, as shown in figure 4, by the outlet of the load sensitive pump 14 of oil inlet P and hydraulic system in the present embodiment
(the namely oil inlet of multi-way valve in hydraulic system) is connected；The oil outlet A of the present embodiment be connection need control it is hydraulic auxiliary
Tool；Load pressure feedback ports LS is connected with one of the oil inlet of shuttle valve 15 in hydraulic system, and oil return inlet T is direct connected tank
Oil return.Volume compact of the present invention need to only connect several hoses, so that it may by additional equipment in original hydraulic system
(hydraulic accessory) accesses in load-sensitive pumping system, at low cost.
Claims (5)
1. a kind of flow divider valve for the hydraulic accessory of excavator, it is characterised in that: including
Valve block (1), valve block (1) are equipped with oil inlet (P), oil outlet (A) and oil return opening (T)；
First passage (11) has the primary valve (1c) to be connected to oil inlet (P) and oil outlet (A) on first passage (11)；
Compensating spool (3) is set to first passage (11) and can slide, and compensating spool (3) is equipped with to block primary valve (1c)
Main shoulder block (3a)；
First main screw plug (8a), is set to the first passage (11) left end, and the first main screw plug is equipped with load pressure feedback ports
(LS), main control chamber (1a) is formed between the first main screw plug (8a) and compensating spool (3), being equipped in main control chamber (1a) makes main gear
Shoulder (3a) stays open first spring (4) of primary valve (1c) trend, and it is anti-that control load pressure is equipped in the first main screw plug (8a)
The nonreturn valve core (13) for presenting mouth (LS) and main control chamber (1a) on-off, when the pressure of main control chamber (1a) is greater than load pressure feedback
When the pressure of mouth (LS), nonreturn valve core (13) is opened, and the oil liquid of main control chamber (1a) flows into load pressure feedback ports (LS)；
First time screw plug (9a) is set to the first passage (11) right end, shape between first time screw plug (9a) and compensating spool (3)
At secondary control chamber (1b), the first runner (31) of connection primary valve (1c) and secondary control chamber (1b) is equipped with inside compensating spool (3)；
Two-position two-way solenoid valve (10), be set to valve block (1) on, two-position two-way solenoid valve (10) to switch main control chamber (1a) with
Oil return opening (T) is connected to or is connected to oil outlet (A)；
Spill valve (5) is set on valve block (1), after main control chamber (1a) interior pressure reaches certain value, spill valve
(5) it opens, main control chamber (1a) is connected to oil return opening (T)；
Flow-rate adjustment valve module (6) is set on valve block (1), to control the output flow of oil outlet (A).
2. a kind of flow divider valve for the hydraulic accessory of excavator according to claim 1, it is characterised in that: described
The first damper (7a) with damping hole is equipped in one runner (31).
3. a kind of flow divider valve for the hydraulic accessory of excavator according to claim 1, it is characterised in that: described two
The second damper (7b) with damping hole is equipped in runner between position two-way electromagnetic valve (10) and oil outlet (A).
4. a kind of flow divider valve for the hydraulic accessory of excavator according to claim 1, it is characterised in that: the stream
Adjustable valve component (6) includes swivel nut (61) and flow control rod (62), is provided on the valve block (1) to be connected to oil outlet
(A) it is threaded through in swivel nut (61) and can slide with the first through flow hole (611) of primary valve (1c), the flow control rod (62),
The outer end of flow control rod (62) be threaded on swivel nut (61) and it is overhanging be threadedly coupled with locking nut (63), the flow
It is provided with the first annular slot (621) with the first through flow hole (611) cooperation on adjusting rod (62) periphery wall, passes through first annular slot
(621) degree being overlapped with the first through flow hole (611) determines the output flow of oil outlet (A).
5. a kind of flow divider valve for the hydraulic accessory of excavator according to claim 1, it is characterised in that: described to overflow
Stream valve module (5) includes valve pocket (51), poppet valve core (52), second spring (53) and overflow valve adjusting rod (54), on valve pocket (51)
It is provided with the overflow valve port (511) of connection valve pocket (51) inner cavity and main control chamber (1a), valve pocket (51) inner cavity and oil return opening (T) are even
Logical, the poppet valve core (52), which is set to valve pocket (51) inner cavity and has second spring (53) top to hold holding, blocks overflow valve port (511)
Trend, the overflow valve adjusting rod (54) are threaded on valve pocket (51) and contradict with poppet valve core (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073703.5A CN108240366B (en) | 2018-01-25 | 2018-01-25 | A kind of flow divider valve for the hydraulic accessory of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073703.5A CN108240366B (en) | 2018-01-25 | 2018-01-25 | A kind of flow divider valve for the hydraulic accessory of excavator |
Publications (2)
| Publication Number | Publication Date |
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| CN108240366A CN108240366A (en) | 2018-07-03 |
| CN108240366B true CN108240366B (en) | 2019-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810073703.5A Active CN108240366B (en) | 2018-01-25 | 2018-01-25 | A kind of flow divider valve for the hydraulic accessory of excavator |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695755A (en) * | 2019-01-21 | 2019-04-30 | 燕山大学 | Bivalve shape of the mouth as one speaks big flow three-way pressure compensating valve |
| CN112065802B (en) * | 2020-09-29 | 2024-06-25 | 浙江海宏液压科技股份有限公司 | Hydraulic lifting system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3468336A (en) * | 1967-03-09 | 1969-09-23 | Grand Valley Machine & Tool Co | Hydraulic control valve for high pressure hydraulic applications |
| JPS5986767A (en) * | 1982-11-08 | 1984-05-19 | Matsushita Seiko Co Ltd | High pressure regulating valve |
| CN201187492Y (en) * | 2008-04-01 | 2009-01-28 | 常德信诚液压有限公司 | Anti-flow saturation combined proportional operating valve |
| CN201874909U (en) * | 2010-10-18 | 2011-06-22 | 印辉 | Main pump flow distribution valve used in combined operations and control of large-scale hydraulic construction machinery |
| CN201866000U (en) * | 2010-11-03 | 2011-06-15 | 秦皇岛天业通联重工股份有限公司 | High-integration threaded cartridge valve of large-tonnage off-load dump truck |
| CN203384152U (en) * | 2012-09-18 | 2014-01-08 | 赵江 | Limit adjusting device for hydraulic proportional valve |
| CN102862603B (en) * | 2012-09-28 | 2015-12-09 | 中联重科股份有限公司 | Proportional steering valve, proportional steering hydraulic circuit, proportional steering system and vehicle |
| CN104047931B (en) * | 2014-06-23 | 2017-01-04 | 柳州柳工液压件有限公司 | Three-way pressure compensating device assembly |
| CN204344992U (en) * | 2014-10-17 | 2015-05-20 | 徐工集团工程机械股份有限公司 | Load sensing multi-way valve, load sensitive system and excavator |
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2018
- 2018-01-25 CN CN201810073703.5A patent/CN108240366B/en active Active
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Effective date of registration: 20190705 Address after: 224700 Jiangsu Province Yancheng Jianhu County High-tech Zone 5D Zhizhuanggu 7 Applicant after: Kevin Fluid Control (Jiangsu) Co.,Ltd. Address before: 315200 Room 501, Building 30 Yinfeng Xiaoyue, Jiaochuan Street, Zhenhai District, Ningbo City, Zhejiang Province Applicant before: Chen Yanyan |
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Address after: 224700 No.7 zhizaogu, 5D, high tech Zone, Jianhu County, Yancheng City, Jiangsu Province Patentee after: Kaiweixi Valve (Yancheng) Co.,Ltd. Address before: 224700 No.7 zhizaogu, 5D, high tech Zone, Jianhu County, Yancheng City, Jiangsu Province Patentee before: Kevin Fluid Control (Jiangsu) Co.,Ltd. |
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