CN205349896U - A hydraulic motor control valve for on hydraulic system return circuit - Google Patents
A hydraulic motor control valve for on hydraulic system return circuit Download PDFInfo
- Publication number
- CN205349896U CN205349896U CN201620057770.4U CN201620057770U CN205349896U CN 205349896 U CN205349896 U CN 205349896U CN 201620057770 U CN201620057770 U CN 201620057770U CN 205349896 U CN205349896 U CN 205349896U
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- valve
- hydraulic
- control valve
- proportional flow
- mouth
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- Expired - Fee Related
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Abstract
The utility model discloses a hydraulic motor control valve for on hydraulic system return circuit contains magenetic exchange valve, overflow valve, electric proportional flow valves, characterized by: electric proportional flow valves is concatenated by two bi -pass switching -over valves of electric proportional and you four -way reversing valve of liquid accuse to be formed, and the overflow valve connects in parallel on electric proportional flow valves, electric proportional flow valves concatenates with magenetic exchange valve. The utility model discloses, the overflow valve gets into pressure oil by the P mouth to through the overflow valve control maximum working pressure of this system. Can the defeated outflow size of control system through electric proportional flow valves. Through the orientation of tribit cross magenetic exchange valve to the defeated outflow of valve control, the corotation of control motor, reversal that can be more convenient, motor speed can not have the polar variation and adjusts to can realize the smooth acceleration and the speed reduction of motor more easily, the reduction system strikes.
Description
Technical field
This utility model relates to a kind of hydraulic motor control valve, especially a kind of hydraulic motor control valve on hydraulic circuit.
Background technology
At present, traditional hydraulic motor controls to be generally adopted choke valve throttle grverning, so both it was likely to result in substantial amounts of energy loss, and speed governing can not adjust immediately, after it assembles, structural volume is also relatively larger, pipeline connects complexity, and the sealing between each connector and pipeline is also more fragile, too increases manufacturing cost simultaneously.
Utility model content
Technical problem to be solved in the utility model, is in that the defect overcoming prior art to exist, it is provided that a kind of hydraulic motor control valve on hydraulic circuit, and its simple in construction is easy to control.Hydraulic motor rotating forward, reversion, speed-regulating function can be realized.
A kind of hydraulic motor control valve on hydraulic circuit of this utility model, comprise solenoid directional control valve, overflow valve, electricity proportional flow control valve group, it is characterized in that: described electricity proportional flow control valve group is composed in series by electricity ratio bi-bit bi-pass reversal valve and hydraulic control two-position four way change valve, and overflow valve is connected in parallel in electricity proportional flow control valve group；Electricity proportional flow control valve group concatenates with solenoid directional control valve.
Described solenoid directional control valve is three-position four-way electromagnetic directional valve.
This utility model, overflow valve is entered pressure oil by P mouth, and controls this system maximum working pressure (MWP) by overflow valve.System output stream amount size can be controlled by electricity proportional flow control valve group.Being controlled the direction of output flow to valve by three-position four-way electromagnetic directional valve, it is possible to control motor eaily and rotate forward, reverse, motor speed can regulate in electrodeless change, and can be easier to realize steadily accelerating and deceleration of motor, reduces system shock.
Accompanying drawing explanation
Fig. 1 is a kind of hydraulic motor control valve hydraulic schematic diagram on hydraulic circuit of this utility model.Wherein,
Labelling 1 is overflow valve, labelling 2: electricity ratio bi-bit bi-pass reversal valve, and labelling 3 is three-position four-way electromagnetic directional valve, labelling 4 hydraulic control two-position four way change valve, P mouth is oil-in, and M mouth is pressure measurement hydraulic fluid port, A mouth/B mouth is executive component access port (as being connected with motor A mouth, B mouth), and T mouth is oil return opening.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is described in further detail.
Shown in Fig. 1 is a kind of hydraulic motor control valve hydraulic schematic diagram on hydraulic circuit of this utility model.This motor control valve, is made up of to valve 3 overflow valve 1, electricity proportional flow control valve group, three-position four-way electromagnetic directional valve.Electricity proportional flow control valve group is composed in series by electricity ratio bi-bit bi-pass reversal valve 2 and hydraulic control two-position four way change valve 4, the electricity oil-out of ratio bi-bit bi-pass reversal valve 2 is connected with the P3 hydraulic fluid port of hydraulic control two-position four way change valve 4, hydraulic control two-position four way change valve 4 another hydraulic fluid port P2, by P1 mouth, it is connected directly between on P mouth.Overflow valve 1 is arranged in parallel in electricity proportional flow control valve group by pipeline.Three-position four-way electromagnetic directional valve is serially connected in electricity proportional flow control valve group to valve 3, and namely three-position four-way electromagnetic directional valve is connected with two oil-out A1 and T1 of hydraulic control two-position four way change valve 4 respectively to two oil-ins of valve 3, and B1 and P4 is connected.The stem internal of overflow valve 1 is provided with the pipeline that can be communicated by valve pocket with overfall, and this overflow valve 1 is entered pressure oil by P mouth, and controls this system maximum working pressure (MWP) by overflow valve 1.Overflow valve 1 is drain tap passage through T mouth.System output stream amount size can be controlled by electricity proportional flow control valve group.Being controlled the direction of output flow to valve 3 by three-position four-way electromagnetic directional valve, it is possible to control motor eaily and rotate forward, reverse, motor speed can regulate in electrodeless change, and can be easier to realize steadily accelerating and deceleration of motor, reduces system shock.This valve block uses and compares with conventional inserted valve Sandwich plate valve, low cost of manufacture.
The control mode of this utility model hydraulic motor control valve on hydraulic circuit is:
P mouth oil-feed; oil-in is maximum allowable by flow 100L/min; pressure oil port M mouth is set; P mouth pressure value can be detected constantly; when P mouth pressure is higher than overflow valve 1 safety overflow maximum pressure setting value; overflow valve 1 safety overflow valve opens pressure release, and protection system element damages Hydraulic Elements because pressure is excessive.
P mouth pressure oil is by the flow control valve group of electricity ratio bi-bit bi-pass reversal valve 2 and hydraulic control two-position four way change valve 4 composition, control the P mouth uninterrupted to three-position four-way electromagnetic directional valve to valve 3, when electricity ratio bi-bit bi-pass reversal valve does not give electricity, P mouth pressure oil enters the P2 place of hydraulic control two-position four way change valve by the threeway of P1 place, P2 place pressure raises, cause that hydraulic control two-position four way change valve guide's hydraulic oil controls two-position four way change valve and moves right, thus causing that P2 pressure oil arrives A1 mouth by hydraulic control two-position four way change valve, again through A1 oil port threeway off-load to T mouth.
When electricity ratio bi-bit bi-pass reversal valve is gradually increased to electricity electric current, P mouth pressure oil enters the P2 place of hydraulic control two-position four way change valve in part through the threeway of P1 place, another part arrives P3 place by electricity ratio bi-bit bi-pass commutation valve member 2, cause that hydraulic control two-position four way change valve is gradually increased by P3 mouth guide oil pressure, hydraulic control two-position four way change valve is moved to the left gradually, thus causing that hydraulic control two-position four way change valve output oil port A1 mouth flow gradually decreases, B1 mouth flow is gradually increased, the output of electrically operated valve block output oil port B mouth is obtained from P1 → P3 → B1 → B by executive components such as motors again through the three-position four-way electromagnetic directional valve left side, oil return to A mouth to valve block T mouth, achieve the executive component proportionality velocity modulation motions such as motor, or obtain the output of electrically operated valve block output oil port A mouth from P1 → P3 → B1 → A by executive components such as motors again through the three-position four-way electromagnetic directional valve left side, oil return to B mouth to valve block T mouth, realize the proportionality velocity modulation adverse movement of the executive components such as motor.
When electricity ratio bi-bit bi-pass reversal valve give electric maximum time, P mouth pressure oil is by P1 place electricity ratio bi-bit bi-pass reversal valve P3 mouth, hydraulic control two-position four way change valve P3 place pressure is raised to the highest, cause that hydraulic control two-position four way change valve guide's hydraulic oil controls two-position four way change valve to moving to right, thus causing that P2 pressure oil disconnects to A1 passage, thus causing that all hydraulic oil flow arrives B1 mouth, the output of electrically operated valve block output oil port B mouth is obtained from P1 → P3 → B1 → B by executive components such as motors by the three-position four-way electromagnetic directional valve left side, oil return to A mouth to valve block T mouth, achieve the executive component proportionality velocity modulation motions such as motor, now the executive component rotating speed such as motor or movement velocity change to maximum, or obtain the output of electrically operated valve block output oil port A mouth from P1 → P3 → B1 → A by executive components such as motors again through the three-position four-way electromagnetic directional valve left side, oil return to B mouth to valve block T mouth, realize the proportionality velocity modulation adverse movement of the executive components such as motor.
Claims (2)
1. the hydraulic motor control valve on hydraulic circuit, comprise solenoid directional control valve, overflow valve, electricity proportional flow control valve group, it is characterized in that: described electricity proportional flow control valve group is composed in series by electricity ratio bi-bit bi-pass reversal valve and hydraulic control two-position four way change valve, and overflow valve is connected in parallel in electricity proportional flow control valve group；Electricity proportional flow control valve group concatenates with solenoid directional control valve.
2. a kind of hydraulic motor control valve on hydraulic circuit according to claim 1, is characterized in that: described solenoid directional control valve is three-position four-way electromagnetic directional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620057770.4U CN205349896U (en) | 2016-01-21 | 2016-01-21 | A hydraulic motor control valve for on hydraulic system return circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620057770.4U CN205349896U (en) | 2016-01-21 | 2016-01-21 | A hydraulic motor control valve for on hydraulic system return circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205349896U true CN205349896U (en) | 2016-06-29 |
Family
ID=56177189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620057770.4U Expired - Fee Related CN205349896U (en) | 2016-01-21 | 2016-01-21 | A hydraulic motor control valve for on hydraulic system return circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205349896U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110710373A (en) * | 2019-09-30 | 2020-01-21 | 黑龙江八一农垦大学 | Hydraulic rotary driving device for agricultural machine |
| CN110864017A (en) * | 2018-08-27 | 2020-03-06 | 河南森源重工有限公司 | Hydraulic control system and snow melting vehicle |
-
2016
- 2016-01-21 CN CN201620057770.4U patent/CN205349896U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864017A (en) * | 2018-08-27 | 2020-03-06 | 河南森源重工有限公司 | Hydraulic control system and snow melting vehicle |
| CN110710373A (en) * | 2019-09-30 | 2020-01-21 | 黑龙江八一农垦大学 | Hydraulic rotary driving device for agricultural machine |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 Termination date: 20220121 |