CN202612239U - Integrated electrohydraulic proportional hydraulic group valve - Google Patents
Integrated electrohydraulic proportional hydraulic group valve Download PDFInfo
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- CN202612239U CN202612239U CN 201220264660 CN201220264660U CN202612239U CN 202612239 U CN202612239 U CN 202612239U CN 201220264660 CN201220264660 CN 201220264660 CN 201220264660 U CN201220264660 U CN 201220264660U CN 202612239 U CN202612239 U CN 202612239U
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Abstract
The utility model discloses an integrated electrohydraulic proportional hydraulic group valve, which includes an oil inlet assembly and a unit basic assembly that are combined in a jointing and fitting manner, wherein a pilot-operated type reduction valve and a first safety valve are arranged in the oil inlet assembly; inlets of the pilot-operated type reduction valve and the first safety valve are connected with a pressure oil duct; an outlet of the pilot-operated type reduction valve is connected with a pilot oil duct; an outlet of the first safety valve is connected with a return oil duct; unit proportional reversing valves are arranged in the unit basic assembly; two driving ends of each unit proportional reversing valve are assembled with unit electromagnetic proportional reduction valves; and a pressure port of each unit electromagnetic proportional reduction valve is connected with the pilot oil duct. Overlaid proportional speed regulation and actuating mechanisms are adopted, meanwhile, the proportional flow distribution during linkage manipulation is not influenced by external load variation and the maximum output discharge capacity of the pump; a voltage-stabilized oil source is arranged on the oil inlet assembly, so as to provide a pilot oil source for the system; and the electromagnetic proportional reduction valves on the two sides of the basic assembly are adopted to control the pushing of the valve rod, electrical signals are converted into hydraulic pressure, and the repeatable accuracy is high.
Description
Technical field
The utility model relates to the technical field of hydraulic system, and particularly a kind of integrated electric-hydraulic proportion hydraulic valve bank is applicable to hydraulic mobile crane variable pump systems in the engineering machinery.
Background technique
Along with constantly developing of China's truck crane industry, constantly more the advancing of hydraulic system technology, in order to satisfy various operating modes, people to the degree of accuracy of the operation of hoist, stationarity require increasingly high.
Modern hydraulic construction machine; In the energy-efficient while of pursuing proportionality velocity modulation, ratio assignment of traffic,, also increasingly high to the requirement of operating valve in order to satisfy job requirements such as various installations; The quality of its performance directly affects machine performance, directly influences various installation exercises.Existing hoist generally adopts metering pump and common selector valve, and metering pump is delivery when full speed, for the actuator of small flow; Energy loss is bigger; Common selector valve is in the process of operation, and action is impacted bigger, often can not satisfy the requirement of various installation exercises.
Summary of the invention
The utility model technical problem to be solved is the present situation to existing technology, provide a kind of rational in infrastructure, operate steadily, the integrated electric-hydraulic proportion hydraulic valve bank of compact in design, repeatability height and smooth operation.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: integrated electric-hydraulic proportion hydraulic valve bank; Include and paste oil-feed couplet and the unit that combo closes and join basically; The oil-feed couplet is built-in with the piloted reducer and first safety valve, and the import of piloted reducer, first safety valve is connected with the pressure oil duct; The piloted reducer outlet is connected with guide's oil duct, and the outlet of first safety valve is connected with back oil road; The unit joins basically and is built-in with the unit proportional reversing valve, and each unit proportional reversing valve two drive end all is fitted with unit solenoid-operated proportional reduction valve; The pressure port of each unit solenoid-operated proportional reduction valve all is connected with guide's oil duct.
The measure of taking also comprises:
Above-mentioned unit proportional reversing valve disposes the work oil duct, and bypass is connected with unit secondary relief valve on the oil duct of each work oil duct, and the outlet of each unit secondary relief valve all is connected with back oil road.
Above-mentioned unit secondary relief valve has been built-in with the one-way valve of repairing function, and the import of this one-way valve is connected with back oil road.
Above-mentioned oil-feed couplet is built-in with the draining road, and solenoid-operated proportional reduction valve outlet in unit all is connected with this draining road.
Be furnished with the transition dictyosome between piloted reducer import and the pressure oil duct during above-mentioned oil-feed joins, be furnished with first damping body between transition dictyosome and the piloted reducer.
Above-mentioned piloted reducer outlet is connected with second safety valve, and the outlet of this second safety valve is connected with back oil road.
Above-mentioned oil-feed is built-in with responsive loop in joining, and be connected with the 3rd safety valve on this sensitivity loop, and the outlet of the 3rd safety valve is connected with back oil road.
The 3rd above-mentioned safety valve is imported and exported two ends and is parallel with the protection safety valve.
The unit proportional reversing valve was supporting during above-mentioned unit joined basically has a unit proportional compensation valve, and this unit proportional compensation valve one control end is connected with responsive loop.
Be furnished with the valve rod of horizontal slippage operation in the above-mentioned unit proportional reversing valve, the two ends of this valve rod all dispose Returnning spring; Is furnished with throttling groove on the valve rod intermediate section.
Compared with prior art, the utility model includes and pastes oil-feed couplet and the unit that combo closes and join basically, and the oil-feed couplet is built-in with the piloted reducer and first safety valve, and the import of piloted reducer, first safety valve is connected with the pressure oil duct; The piloted reducer outlet is connected with guide's oil duct, and the outlet of first safety valve is connected with back oil road; The unit joins basically and is built-in with the unit proportional reversing valve, and each unit proportional reversing valve two drive end all is fitted with unit solenoid-operated proportional reduction valve; The pressure port of each unit solenoid-operated proportional reduction valve all is connected with guide's oil duct.The advantage of the utility model is: be applicable to all kinds of hydraulic mobile crane variable pump systems in the engineering machinery; Comprise get on the bus each operating mechanism of loop hydraulic system of tyre type, crawler crane, realize the ratio stepless scheduling of several actuators under different load separately; This valve body structure more helps stringing and maintenance, makes system more steady, more can satisfy the requirement of various operating modes; Adopt advanced LUDV control system, stack proportionality velocity modulation and a plurality of actuator, the ratio assignment of traffic when interlock is handled does not simultaneously receive the influence of each outer load variations and the maximum output of pump discharge capacity; On the LS feedback port oil circuit that oil-feed joins, flow-limiting valve, relief valve, damping are set, make LS pressure more steady; On oil-feed joins, the voltage stabilizing oil sources is set, for system provides guide's oil sources; The basic couplet adopted the duplex structure, and A, B mouth and compensating spool are not in the same plane, makes stringing compact more; Adopt the solenoid-operated proportional reduction valve to control the promotion of valve rod in the basic both sides that join, electrical signal conversion fluid pressure, repeatability is high.
Description of drawings
Fig. 1 is the utility model embodiment's a hydraulic principle schematic representation;
Fig. 2 is the hydraulic schematic diagram of guide's oil duct during the utility model embodiment oil-feed joins;
Fig. 3 is the manifold block cross section cross-sectional schematic by Fig. 2 requirement;
Fig. 4 is that cross-sectional schematic is looked on the left side of Fig. 3;
Fig. 5 is the manifold block partial schematic sectional view in responsive loop during the utility model embodiment oil-feed joins;
Fig. 6 is the longitudinal cross-section cross-sectional schematic that the utility model embodiment unit joins basically.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
To shown in Figure 6, figure grade is explained as follows like Fig. 1: oil-feed joins 1, and the unit joins 2 basically, transition dictyosome 3, the first damping bodies 4; Valve rod 5, Returnning spring 6, throttling groove 7, work oil duct A, work oil duct B; Unit proportional reversing valve DV, piloted reducer JYF, draining road L, responsive loop LS, pressure oil duct P; Unit secondary relief valve PR, the first safety valve R1, the second safety valve R2, the 3rd safety valve R3, unit proportional compensation valve SC; Back oil road T, guide's oil duct X, protection safety valve XLF, unit solenoid-operated proportional reduction valve Y.
The utility model embodiment; Integrated electric-hydraulic proportion hydraulic valve bank; Include and paste oil-feed that combo closes and join 1 and join 2 basically with the unit, oil-feed joins 1 and is built-in with the piloted reducer JYF and the first safety valve R1, and the import of piloted reducer JYF, the first safety valve R1 is connected with pressure oil duct P; Piloted reducer JYF outlet is connected with guide's oil duct X, and first safety valve R1 outlet is connected with back oil road T; The unit joins 2 basically and is built-in with unit proportional reversing valve DV, and each unit proportional reversing valve DV two drive end all is fitted with unit solenoid-operated proportional reduction valve Y; The pressure port of each unit solenoid-operated proportional reduction valve Y all is connected with guide's oil duct X.
Unit proportional reversing valve DV disposes work oil duct A, B, and bypass is connected with unit secondary relief valve PR on the oil duct of each work oil duct A, B, and the outlet of each unit secondary relief valve PR all is connected with described back oil road T.Unit secondary relief valve PR has been built-in with the one-way valve of repairing function, and the import of this one-way valve is connected with back oil road T.
Oil-feed joins 1 and is built-in with draining road L, and solenoid-operated proportional reduction valve Y outlet in unit all is connected with this draining road L.Be furnished with transition dictyosome 3 between piloted reducer JYF import and the pressure oil duct P in the oil-feed couplet 1, be furnished with first damping body 4 between transition dictyosome 3 and the piloted reducer JYF.
Piloted reducer JYF outlet is connected with the second safety valve R2, and the outlet of this second safety valve R2 is connected with back oil road T.Be built-in with responsive loop LS in the oil-feed couplet 1, be connected with the 3rd safety valve R3 on the LS of this sensitivity loop, and the outlet of the 3rd safety valve R3 be connected with back oil road T.The 3rd safety valve R3 imports and exports two ends and is parallel with protection safety valve XLF.
The unit joins basically in 2 that unit proportional reversing valve DV is supporting to have a unit proportional compensation valve SC, and this unit proportional compensation valve SC one control end is connected with described responsive loop LS.Be furnished with the valve rod 5 of horizontal slippage operation among the unit proportional reversing valve DV, the two ends of this valve rod 5 all dispose Returnning spring 6; Is furnished with throttling groove 7 on valve rod 5 intermediate sections.
Unit Proportional valve DV is series product, is identical product like DV1, DV2 etc.; Unit proportional compensation valve SC is series product, is identical product like SC1, SC2 etc.; Control selector valve Y is series product, is identical product like Y1, Y2 etc.; Unit secondary relief valve PR is series product, is identical product like PR1, PR2 etc.; Work oil duct A, B, middle label such as A1, A2, B1, B2 etc. are the different identification of same function.
Fig. 4 is the basic sectional view that joins; As shown in the figure, 1 valve body, 2 springs, 1,3 adjustable levers, 4 dampings, 5 solenoid-operated proportional reduction valve, 1,6 secondary relief valves, 7 springs, 2,8 compensating spools, 9 valve rods, 10 throttling grooves, 1,11 P chambeies, 12 runners, 1,13 runners, 2,14 throttling grooves, 2,15 runners, 3,16 guide's hydraulic fluid port X, 17 drain tap Y, 18 oil return inlet T, 19 throttling grooves, 3,20 throttling grooves, 4,21 solenoid-operated proportional reduction valve, 2,22 end caps, 23LS hydraulic fluid port, 24 runners 4.Valve body 1 adopts the duplex structure, and 16 guide's hydraulic fluid port X are the P mouth of 5 and 21 solenoid-operated proportional reduction valve, and 17 is the drain tap of solenoid-operated proportional reduction valve; After 1 energising of 5 solenoid-operated proportional reduction valve, control oil can get into end cap through 4 dampings, and control oil can promote 9 valve rods to left movement; This moment, the oil in P chamber can get into 12 runners 1 through 10 throttling grooves 1, pushed 7 springs 2 of 8 compensating spools open, and this has part to get into the 23LS hydraulic fluid port; As the pressure of load feedback, most of oil gets into 13 runners 2, gets into 15 runners 3 through 14 throttling grooves, 2 backs again; The pressure of B mouth can limit through 6 relief valves; The oil of B mouth will get into actuator, and the return opening of actuator will get into 24 runners 4 through A, and oil gets into 18 oil return inlet T through 19 throttling grooves 3 afterwards.Valve rod moves to the right and moves similar left.
The utility model embodiment's advantage is: be applicable to all kinds of hydraulic mobile crane variable pump systems in the engineering machinery; Comprise get on the bus each operating mechanism of loop hydraulic system of tyre type, crawler crane, realize the ratio stepless scheduling of several actuators under different load separately; This valve body structure more helps stringing and maintenance, makes system more steady, more can satisfy the requirement of various operating modes; Adopt advanced LUDV control system, stack proportionality velocity modulation and a plurality of actuator, the ratio assignment of traffic when interlock is handled does not simultaneously receive the influence of each outer load variations and the maximum output of pump discharge capacity; On the LS feedback port oil circuit that oil-feed joins, flow-limiting valve, relief valve, damping are set, make LS pressure more steady; On oil-feed joins, the voltage stabilizing oil sources is set, for system provides guide's oil sources; The basic couplet adopted the duplex structure, and A, B mouth and compensating spool are not in the same plane, makes stringing compact more; Adopt the solenoid-operated proportional reduction valve to control the promotion of valve rod in the basic both sides that join, electrical signal conversion fluid pressure, repeatability is high.
Claims (10)
1. integrated electric-hydraulic proportion hydraulic valve bank; Include and paste that oil-feed that combo closes joins (1) and the unit joins (2) basically; It is characterized in that: described oil-feed joins (1) and is built-in with piloted reducer (JYF) and first safety valve (R1), and the import of piloted reducer (JYF), first safety valve (R1) is connected with pressure oil duct (P); Described piloted reducer (JYF) outlet is connected with guide's oil duct (X), and described first safety valve (R1) outlet is connected with back oil road (T); Described unit joins (2) basically and is built-in with unit proportional reversing valve (DV), and each unit proportional reversing valve (DV) two drive end all is fitted with unit solenoid-operated proportional reduction valve (Y); The pressure port of each unit solenoid-operated proportional reduction valve (Y) all is connected with described guide's oil duct (X).
2. integrated electric-hydraulic proportion hydraulic valve bank according to claim 1; It is characterized in that: described unit proportional reversing valve (DV) disposes work oil duct (A, B); Bypass is connected with unit secondary relief valve (PR) on the oil duct of each work oil duct (A, B), and the outlet of each unit secondary relief valve (PR) all is connected with described back oil road (T).
3. integrated electric-hydraulic proportion hydraulic valve bank according to claim 2 is characterized in that: described unit secondary relief valve (PR) has been built-in with the one-way valve of repairing function, and the import of this one-way valve is connected with described back oil road (T).
4. integrated electric-hydraulic proportion hydraulic valve bank according to claim 3 is characterized in that: described oil-feed joins (1) and is built-in with draining road (L), and described unit solenoid-operated proportional reduction valve (Y) outlet all is connected with this draining road (L).
5. integrated electric-hydraulic proportion hydraulic valve bank according to claim 1; It is characterized in that: described oil-feed joins between (1) middle piloted reducer (JYF) import and the pressure oil duct (P) is furnished with transition dictyosome (3), is furnished with first damping body (4) between described transition dictyosome (3) and the piloted reducer (JYF).
6. integrated electric-hydraulic proportion hydraulic valve bank according to claim 5 is characterized in that: described piloted reducer (JYF) outlet is connected with second safety valve (R2), and the outlet of this second safety valve (R2) is connected with described back oil road (T).
7. integrated electric-hydraulic proportion hydraulic valve bank according to claim 6; It is characterized in that: be built-in with responsive loop (LS) in the described oil-feed couplet (1); Be connected with the 3rd safety valve (R3) on this sensitivity loop (LS), and the outlet of the 3rd safety valve (R3) is connected with described back oil road (T).
8. integrated electric-hydraulic proportion hydraulic valve bank according to claim 7 is characterized in that: described the 3rd safety valve (R3) is imported and exported two ends and is parallel with protection safety valve (XLF).
9. integrated electric-hydraulic proportion hydraulic valve bank according to claim 2; It is characterized in that: described unit joins basically in (2) that unit proportional reversing valve (DV) is supporting to have a unit proportional compensation valve (SC), and this unit proportional compensation valve (SC) control end is connected with described responsive loop (LS).
10. integrated electric-hydraulic proportion hydraulic valve bank according to claim 9 is characterized in that: be furnished with the valve rod (5) of horizontal slippage operation in the described unit proportional reversing valve (DV), the two ends of this valve rod (5) all dispose Returnning spring (6); Is furnished with throttling groove (7) on described valve rod (5) intermediate section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220264660 CN202612239U (en) | 2012-06-07 | 2012-06-07 | Integrated electrohydraulic proportional hydraulic group valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220264660 CN202612239U (en) | 2012-06-07 | 2012-06-07 | Integrated electrohydraulic proportional hydraulic group valve |
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| Publication Number | Publication Date |
|---|---|
| CN202612239U true CN202612239U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220264660 Expired - Lifetime CN202612239U (en) | 2012-06-07 | 2012-06-07 | Integrated electrohydraulic proportional hydraulic group valve |
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| CN (1) | CN202612239U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705287A (en) * | 2012-06-07 | 2012-10-03 | 卢宇 | Integrated electro-hydraulic proportional hydraulic valve bank |
| CN105971964A (en) * | 2016-07-21 | 2016-09-28 | 泸州众大科技液压件有限公司 | Multiway electro-hydraulic control valve adopting oil return differential pressure as pilot oil source |
-
2012
- 2012-06-07 CN CN 201220264660 patent/CN202612239U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705287A (en) * | 2012-06-07 | 2012-10-03 | 卢宇 | Integrated electro-hydraulic proportional hydraulic valve bank |
| CN102705287B (en) * | 2012-06-07 | 2014-12-17 | 卢宇 | Integrated electro-hydraulic proportional hydraulic valve bank |
| CN105971964A (en) * | 2016-07-21 | 2016-09-28 | 泸州众大科技液压件有限公司 | Multiway electro-hydraulic control valve adopting oil return differential pressure as pilot oil source |
| CN105971964B (en) * | 2016-07-21 | 2018-04-03 | 泸州众大科技液压件有限公司 | A kind of multichannel electric hydraulic control valve for making pilot control using oil return pressure difference |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |