CN203685726U - Extra-large flow electrical proportional speed regulation control system - Google Patents
Extra-large flow electrical proportional speed regulation control system Download PDFInfo
- Publication number
- CN203685726U CN203685726U CN201420033372.XU CN201420033372U CN203685726U CN 203685726 U CN203685726 U CN 203685726U CN 201420033372 U CN201420033372 U CN 201420033372U CN 203685726 U CN203685726 U CN 203685726U
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- valve
- speed regulation
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- oil
- guide
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- 230000005611 electricity Effects 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model discloses an extra-large flow electrical proportional speed regulation control system. A pressure oil source is connected with an oil inlet, the oil inlet is connected with a common speed regulation valve through a first pilot inserting type normally-closed logic valve, and the common speed regulation valve is then connected with a first oil outlet through a second pilot inserting type normally-closed logic valve. The common speed regulation valve is further connected with a second oil outlet, and the two ends of the first pilot inserting type normally-closed logic valve after being connected with the common speed regulation valve are in parallel connection with an electromagnetic proportional speed regulation valve. An oil return opening is connected with the second oil outlet through an overflow valve, and the oil return opening is further connected with the first oil outlet through a pilot inserting type normally-opened logic valve. The first oil outlet and the second oil outlet are connected with a rodless cavity and a rod cavity of an oil cylinder respectively, and the two stroke ends of the oil cylinder are respectively provided with a proximity switch. The signal output ends of the proximity switches and the control ends of all the valves are both connected with a control unit. The electromagnetic proportional speed regulation valve and the common speed regulation valve with fixed flow achieve the stepless speed regulation function, a large amount of cost is saved, and the economy is high.
Description
Technical field
The utility model relates to the control of hydraulic system speed, relates in particular to a kind of super-flow electricity proportional speed regulation control system.
Background technique
At present, the flow that electric proportional velocity regulating valve generally passes through is no more than 80L/min, if need the range of flow of controlling to exceed 100L/min, generally realizes the step-less adjustment of speed by pump control.In the time that multiple executive components use same pumping source, the step-less adjustment that realizes speed by pump control is just very difficult.
Model utility content
The purpose of this utility model is to provide a kind of super-flow electricity proportional speed regulation control system, can realize stepless time adjustment, not only safety but also economy.
The utility model adopts following technical proposals: a kind of super-flow electricity proportional speed regulation control system, comprise solenoid-operated proportional series flow control valve, common series flow control valve, two normally closed logical valves of guide's plug-in type, guide's plug-in type normally open logic valve and control unit, pressure oil-source connects filler opening, filler opening connects common series flow control valve by the normally closed logical valve of first guide's plug-in type, common series flow control valve connects the first oil outlet by the normally closed logical valve of second guide's plug-in type again, common series flow control valve also connects the second oil outlet, the two ends that the described normally closed logical valve of first guide's plug-in type connects after common series flow control valve are parallel with solenoid-operated proportional series flow control valve, return opening connects the second oil outlet by relief valve, return opening also connects the first oil outlet by guide's plug-in type normally open logic valve, the first described oil outlet and the second oil outlet are connected respectively rodless cavity and the rod chamber of oil cylinder, the stroke two ends of described oil cylinder are respectively arranged with approach switch, the signal output part of described approach switch is all connected with control unit with the control end of each valve.
Described guide's plug-in type normally open logic valve, two normally closed logical valves of guide's plug-in type also connect drain tap.
The second described oil outlet place is also provided with pressure-measuring point.
The utility model is according to actual applying working condition and hydraulic characteristic, discloses a kind of super-flow electricity proportional speed regulation control system.Cartridge valve piece project organization compactness takes up room little, reduces and leaks possibility, and low power pilot-actuated valve has obvious energy-saving effect; The common series flow control valve of firm discharge adds the function of stepless speed regulation that solenoid-operated proportional series flow control valve is realized, and than using a large flow electromagnetic proportional velocity regulating valve to save a large amount of expenses, Economy is strong; Differential oil line design make compared with the pump of small displacement just can meet oil cylinder when the high speed to flow system flow demand, saving element buying expenses; Relief valve and approach switch make the Security of oil cylinder stronger.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, the utility model discloses a kind of super-flow electricity proportional speed regulation control system 1, comprise solenoid-operated proportional series flow control valve 9, common series flow control valve 8, guide's plug-in type normally open logic valve 5, the normally closed logical valve 6 of guide's plug-in type, 7 and control unit, pressure oil-source connects oil inlet P, oil inlet P connects common series flow control valve 8 by the normally closed logical valve 7 of first guide's plug-in type, common series flow control valve 8 connects the first oil outlet A by the normally closed logical valve 6 of second guide's plug-in type again, common series flow control valve 8 also connects the second oil outlet B, the two ends that the described normally closed logical valve 7 of first guide's plug-in type connects after common series flow control valve 8 are parallel with solenoid-operated proportional series flow control valve 9, oil return inlet T connects the second oil outlet B by relief valve 4, oil return inlet T also connects the first oil outlet A by guide's plug-in type normally open logic valve 5, the first described oil outlet A and the second oil outlet B are connected respectively rodless cavity and the rod chamber of oil cylinder 2, the stroke two ends of described oil cylinder 2 are respectively arranged with approach switch 3, 10, approach switch 3, 10 are arranged on the place apart from total travel certain distance, the operating mode such as oil cylinder 2 needn't just be completed in the time that all strokes finish commutate or stop, oil cylinder 2 moves and makes cylinder barrel in advance, the impact of sealing etc. is less.The described signal output part of approach switch 3,10 and the control end of each valve are all connected with control unit.The described normally closed logical valve 7 of first guide's plug-in type, the normally closed logical valve 6 of second guide's plug-in type are also connected drain tap L with guide's plug-in type normally open logic valve 5; The second described oil outlet B place is also provided with pressure-measuring point M.
In the utility model, the rod chamber of oil cylinder 2 and rodless cavity adopt differential circuit design, need the flow that system provides to reduce, and need pump delivery less.On oil cylinder working-pressure oil circuit, connect a solenoid-operated proportional series flow control valve 9 and common series flow control valve 8, normally closed logical valve 7 of first guide's plug-in type of the front series connection of common series flow control valve 8 is controlled the break-make of common series flow control valve 8.In the time requiring the work of oil cylinder low-speed range, the stepless speed regulation of oil cylinder is carried out in the adjusting of carrying out flow by solenoid-operated proportional series flow control valve 9; In the time requiring oil cylinder high-speed motion, adopt the common series flow control valve 8 of firm discharge to add that solenoid-operated proportional series flow control valve 9 works together and carry out the stepless proportional control of speed.A relief valve 4 in parallel on the rod chamber oil circuit of oil cylinder 2, when oil cylinder 2 is in the time that stretch/shrink stroke finishes or run into other impacts, relief valve 4 is opened overflow effect makes system pressure constant, job requirement when differential oil line design makes a relief valve 4 just can meet oil cylinder bidirectional-movement.
Oil circuit trend when oil cylinder 2 stretches out in low-speed range is: the normally closed logical valve 6 of normally closed must the conduct → A of logical valve 6 of pressure oil-source → P mouth → solenoid-operated proportional series flow control valve 9 → the second guide's plug-in type mouth → oil cylinder rodless cavity → cylinder rod chamber → the second guide's plug-in type → Now guide's plug-in type normally open logic valve 5 obtains electric cutting out, and the normally closed logical valve 7 of first guide's plug-in type must not be electric, and by regulating solenoid-operated proportional series flow control valve 9 to control oil cylinder 2 speed, approach switch 3 is controlled oil cylinder stroke.
Oil circuit trend when oil cylinder 2 is retracted in low-speed range is: pressure oil-source → P mouth → solenoid-operated proportional series flow control valve 9 → B mouth → cylinder rod chamber → oil cylinder rodless cavity → A mouth → guide plug-in type normally open logic valve 5 → T mouth takes back oil Now the normally closed logical valve 6,7 of guide's plug-in type must not be electric, and by regulating solenoid-operated proportional series flow control valve 9 to control oil cylinder 2 speed, approach switch 10 is controlled oil cylinder stroke.
Oil circuit when oil cylinder 2 stretches out in high-speed range trend is: the normally closed logical valve 7 of pressure oil-source → P mouth → solenoid-operated proportional series flow control valve 9, the first guide's plug-in type must conduct make the normally closed logical valve 6 of work → second guide's plug-in type of common series flow control valve 8 normally closed must conduct → A of logical valve 6 mouth → oil cylinder rodless cavity → cylinder rod chamber → the second guide's plug-in type → Now guide's plug-in type normally open logic valve 5 obtains electric cutting out, and the normally closed logical valve 7 of first guide's plug-in type obtains electric, and common series flow control valve 8 flows are fixed, and by regulating solenoid-operated proportional series flow control valve 9 to control oil cylinder speed, approach switch 3 is controlled oil cylinder stroke.
Oil circuit trend when oil cylinder 2 is retracted in high-speed range is: the normally closed logical valve 7 of pressure oil-source → P mouth → solenoid-operated proportional series flow control valve 9, the first guide's plug-in type must conduct and make common work → B of series flow control valve 8 mouth → cylinder rod chamber → oil cylinder rodless cavity → A mouth → guide plug-in type normally open logic valve 5 → T mouth take back oil Now the normally closed logical valve 6 of second guide's plug-in type must not be electric, and by regulating solenoid-operated proportional series flow control valve 9 to control oil cylinder speed, approach switch 10 is controlled oil cylinder stroke.
Claims (3)
1. a super-flow electricity proportional speed regulation control system, it is characterized in that: comprise solenoid-operated proportional series flow control valve, common series flow control valve, two normally closed logical valves of guide's plug-in type, guide's plug-in type normally open logic valve and control unit, pressure oil-source connects filler opening, filler opening connects common series flow control valve by the normally closed logical valve of first guide's plug-in type, common series flow control valve connects the first oil outlet by the normally closed logical valve of second guide's plug-in type again, common series flow control valve also connects the second oil outlet, the two ends that the described normally closed logical valve of first guide's plug-in type connects after common series flow control valve are parallel with solenoid-operated proportional series flow control valve, return opening connects the second oil outlet by relief valve, return opening also connects the first oil outlet by guide's plug-in type normally open logic valve, the first described oil outlet and the second oil outlet are connected respectively rodless cavity and the rod chamber of oil cylinder, the stroke two ends of described oil cylinder are respectively arranged with approach switch, the signal output part of described approach switch is all connected with control unit with the control end of each valve.
2. super-flow electricity proportional speed regulation control system according to claim 1, is characterized in that: described two normally closed logical valves of guide's plug-in type, guide's plug-in type normally open logic valve also connect drain tap.
3. super-flow electricity proportional speed regulation control system according to claim 1, is characterized in that: the second described oil outlet place is also provided with pressure-measuring point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420033372.XU CN203685726U (en) | 2014-01-20 | 2014-01-20 | Extra-large flow electrical proportional speed regulation control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420033372.XU CN203685726U (en) | 2014-01-20 | 2014-01-20 | Extra-large flow electrical proportional speed regulation control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685726U true CN203685726U (en) | 2014-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420033372.XU Expired - Lifetime CN203685726U (en) | 2014-01-20 | 2014-01-20 | Extra-large flow electrical proportional speed regulation control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685726U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762889A (en) * | 2016-12-30 | 2017-05-31 | 中铁工程装备集团有限公司 | Super-large-diameter shield conveying worm stepless speed regulation fluid power system |
| CN108488112A (en) * | 2018-05-16 | 2018-09-04 | 南通润邦重机有限公司 | large-flow hydraulic system differential circuit and its control method |
-
2014
- 2014-01-20 CN CN201420033372.XU patent/CN203685726U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762889A (en) * | 2016-12-30 | 2017-05-31 | 中铁工程装备集团有限公司 | Super-large-diameter shield conveying worm stepless speed regulation fluid power system |
| CN108488112A (en) * | 2018-05-16 | 2018-09-04 | 南通润邦重机有限公司 | large-flow hydraulic system differential circuit and its control method |
| CN108488112B (en) * | 2018-05-16 | 2023-08-04 | 南通润邦重机有限公司 | Differential loop of large-flow hydraulic system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160805 Address after: 450016 Zhengzhou economic and Technological Development Zone, Henan, No. Sixth Street, No. 99 Patentee after: CHINA RAILWAY ENGINEERING EQUIPMENT GROUP Co.,Ltd. Patentee after: CHINA RAILWAY ENGINEERING EQUIPMENT GROUP SHIELD MANUFACTURING Co.,Ltd. Address before: 450016 Zhengzhou economic and Technological Development Zone, Henan, No. Sixth Street, No. 99 Patentee before: CHINA RAILWAY ENGINEERING EQUIPMENT GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |