CN219413072U - Two-way action locking hydraulic system - Google Patents
Two-way action locking hydraulic system Download PDFInfo
- Publication number
- CN219413072U CN219413072U CN202320250784.8U CN202320250784U CN219413072U CN 219413072 U CN219413072 U CN 219413072U CN 202320250784 U CN202320250784 U CN 202320250784U CN 219413072 U CN219413072 U CN 219413072U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- valve
- pressure
- pressure regulating
- way
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model relates to a bidirectional locking hydraulic system which comprises an oil tank, a first one-way valve, a second one-way valve, a bidirectional pressure regulating pump, a pressure regulating mechanism, a first pressure maintaining valve, a first piston cylinder, a first pressure releasing valve, a second pressure maintaining valve, a second piston cylinder and a second pressure releasing valve, wherein the bidirectional pressure regulating pump comprises a first pump port and a second pump port, the first pump port is connected with the oil tank through a first pipeline, the first one-way valve is provided with a first pipeline, the second pump port is connected with the first pressure releasing valve through a second pipeline, the first piston cylinder is connected with the second pipeline through a third pipeline, the first pressure maintaining valve is provided with a second pipeline, the second pressure regulating valve is connected with the first pipeline through a fourth pipeline, the second piston cylinder is connected with the fourth pipeline through a fifth pipeline, the pressure regulating mechanism is connected with the oil tank through a sixth pipeline, the sixth pipeline is connected with the fourth pipeline through a seventh pipeline; the hydraulic system solves the technical problems of low efficiency, high power consumption and high cost of the hydraulic system in the prior art.
Description
Technical Field
The utility model relates to the technical field of hydraulic systems, in particular to a bidirectional locking hydraulic system.
Background
It is often necessary in hydraulic systems to provide a controllable pressure to the piston cylinder and thus to translate the piston rod effort or torque to achieve specific mechanical transmission requirements. Chinese patent CN109958763B discloses a hydraulic control system of a dual clutch automatic transmission, a transmission and a vehicle, wherein the hydraulic control system comprises a hydraulic control system in a conventional automotive dual clutch automatic transmission, wherein the clutches to be pressure-controlled are a first clutch, a second clutch and a motor clutch, the pressure regulation of which is controlled by a first pressure control valve, a second pressure control valve and a third pressure control valve, the three pressure solenoid valves are all spool valve structures, and a main pressure regulating valve is arranged at the upstream of the pressure solenoid valves for regulating the outlet pressures of an electronic pump and a mechanical pump. In the actual operation, the electronic pump and the mechanical pump need to be continuously operated in order to maintain the pressure after the pressures of the first clutch, the second clutch, and the motor clutch are adjusted to the target pressures. The continuously operated oil pump can continuously consume energy, so that the efficiency of the system is reduced, the power consumption is increased, the high-precision proportional pressure electromagnetic valve is relatively high in cost, and the system cost is also increased.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a bidirectional locking hydraulic system which does not need continuous operation of an oil pump, has low power consumption and low cost, so as to solve the technical problems of low efficiency, high power consumption and high cost of the hydraulic system in the prior art.
In order to solve the technical problems, the utility model provides a bidirectional-acting locking hydraulic system, which comprises an oil tank, a first one-way valve, a second one-way valve, a bidirectional pressure regulating pump, a pressure regulating mechanism, a first pressure maintaining valve, a first piston cylinder, a first pressure relief valve, a second pressure maintaining valve, a second piston cylinder and a second pressure relief valve, wherein the bidirectional pressure regulating pump comprises a first pump port and a second pump port, the first pump port is connected with the oil tank through a first pipeline, the first one-way valve is arranged on a first pipeline, the second pump port is connected with the first pressure relief valve through a second pipeline, the first piston cylinder is connected with the second pipeline through a third pipeline, a joint of the third pipeline and the second pipeline is arranged between the first pressure maintaining valve and the first pressure relief valve, the second pressure maintaining valve is connected with the first pipeline through a fourth pipeline, the joint of the fourth pipeline is arranged on the fourth pipeline, the second pressure maintaining valve is arranged on the fifth pipeline, the fifth pipeline is connected with the sixth pipeline, the joint of the fifth pressure maintaining valve is arranged between the sixth pipeline and the sixth pressure maintaining valve, the sixth pressure maintaining valve is connected with the sixth pipeline, the sixth pressure maintaining valve is arranged between the sixth pressure maintaining valve and the sixth pressure regulating valve is connected with the sixth pipeline, the two-way pressure regulating pump is electrically connected with the pressure regulating mechanism.
After the structure is adopted, the bidirectional locking hydraulic system has the following advantages: when the bidirectional pressure regulating pump rotates positively, oil is sucked through the first unidirectional pump and the first pump port, oil is fed back to the pressure regulating mechanism through the sixth pipeline after being output from the second pump port to realize pressure regulation as required, oil enters the first piston cylinder after passing through the first pressure maintaining valve, so that motion control and pressure regulation of the first piston cylinder are realized, when the bidirectional pressure regulating pump rotates reversely, oil is output through the first pump port and fed back to the pressure regulating mechanism through the seventh pipeline, oil enters the second piston cylinder after passing through the second pressure maintaining valve, so that motion control and pressure regulation of the second piston cylinder are realized, the pressure of the first piston cylinder is locked due to the action of the first pressure maintaining valve and the closing of the first pressure maintaining valve, the pressure of the second piston cylinder is locked due to the action of the second pressure maintaining valve and the closing of the second pressure releasing valve, the bidirectional pressure regulating pump can be stopped, the system power consumption is greatly reduced, the whole efficiency is improved, a proportional regulating valve is omitted, the system cost is reduced, the reasonable design of each unidirectional valve and the bidirectional pressure regulating valve and the first piston and the second piston are independently established through the forward and reverse rotation of the first piston and the second piston.
As an improvement, a third one-way valve is arranged on the sixth pipeline, the third one-way valve is positioned between the joint of the sixth pipeline and the second pipeline and the joint of the sixth pipeline and the seventh pipeline, and a fourth one-way valve is arranged on the seventh pipeline; by adopting the structure, the two loops corresponding to the first piston cylinder and the second piston cylinder are further independent through the third check valve and the fourth check valve, so that the mutual influence is avoided.
As an improvement, the pressure regulating mechanism comprises a pressure regulating valve and an eighth pipeline, wherein the sixth pipeline is connected with the input end of the pressure regulating valve, and the sixth pipeline is connected with the pilot pressurizing port of the pressure regulating valve through the eighth pipeline.
As an improvement, the first piston cylinder and the second piston cylinder are low-leakage piston cylinders, and the first pressure maintaining valve, the second pressure maintaining valve, the first pressure relief valve and the second pressure relief valve are low-leakage ball valves or low-leakage cone valves; by adopting the structure, the design of low leakage is adopted, so that the leakage of oil can be reduced when the system is in pressure maintaining, the downtime of the oil pump is further prolonged, and the power consumption of the system is reduced.
As an improvement, the third pipeline and the fifth pipeline are connected with pressure sensors; by adopting the structure, the pressure sensor detects the pressure of the first piston cylinder and the second piston cylinder, and the precision is higher.
Drawings
FIG. 1 is a schematic diagram of the whole of the present utility model.
Reference numerals: 1. an oil tank; 2. a first one-way valve; 3. a second one-way valve; 4. a two-way pressure regulating pump; 41. a first pump port; 42. a second pump port; 5. a pressure regulating mechanism; 51. a pressure regulating valve; 52. an eighth pipeline; 6. a first pressure maintaining valve; 7. a first piston cylinder; 8. a first pressure relief valve; 9. a second pressure maintaining valve; 10. a second piston cylinder; 11. a second pressure relief valve; 12. a first pipeline; 13. a second pipeline; 14. a third pipeline; 15. a fourth pipeline; 16. a fifth pipeline; 17. a sixth pipeline; 18. a seventh pipeline; 19. a third one-way valve; 20. and a fourth one-way valve.
Detailed Description
A two-way locking hydraulic system according to the present utility model will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, a two-way locking hydraulic system comprises an oil tank 1, a first one-way valve 2, a second one-way valve 3, a two-way pressure regulating pump 4, a pressure regulating mechanism 5, a first pressure maintaining valve 6, a first piston cylinder 7, a first pressure releasing valve 8, a second pressure maintaining valve 9, a second piston cylinder 10 and a second pressure releasing valve 11, wherein the two-way pressure regulating pump 4 comprises a first pump port 41 and a second pump port 42, the first pump port 41 is connected with the oil tank 1 through a first pipeline 12, the first one-way valve 2 is arranged on the first pipeline 12, and the first one-way valve 2 enables oil to be conducted from the oil tank 1 to the two-way pressure regulating pump 4 in one direction; the second pump port 42 is connected with the first pressure release valve 8 through the second pipeline 13, the first piston cylinder 7 is connected with the second pipeline 13 through the third pipeline 14, the first pressure retaining valve 6 is arranged on the second pipeline 13, the joint of the third pipeline 14 and the second pipeline 13 is positioned between the first pressure retaining valve 6 and the first pressure release valve 8, and the first pressure retaining valve 6 enables oil to be conducted unidirectionally from the bidirectional pressure regulating pump 4 to the first piston cylinder 7; the second pressure release valve 11 is connected with the first pipeline 12 through the fourth pipeline 15, the junction of the fourth pipeline 15 and the first pipeline 12 is located between the bidirectional pressure regulating pump 4 and the first one-way valve 2, the second piston cylinder 10 is connected with the fourth pipeline 15 through the fifth pipeline 16, the second pressure maintaining valve 9 is arranged on the fourth pipeline 15, the junction of the fifth pipeline 16 and the fourth pipeline 15 is located between the second pressure release valve 11 and the second pressure maintaining valve 9, and the second pressure maintaining valve 9 enables oil to be conducted unidirectionally from the bidirectional pressure regulating pump 4 to the second piston cylinder 10.
The pressure regulating mechanism 5 is connected with the oil tank 1 through a sixth pipeline 17, the sixth pipeline 17 is connected with a second pipeline 13, the joint of the sixth pipeline 17 and the second pipeline 13 is positioned between the bidirectional pressure regulating pump 4 and the first pressure maintaining valve 6, the second one-way valve 3 is arranged on the sixth pipeline 17, the second one-way valve 3 is positioned at the upstream of the joint of the second pipeline 13 and the sixth pipeline 17, and the second one-way valve 3 enables oil to be conducted unidirectionally from the oil tank 1 to the bidirectional pressure regulating pump 4; the sixth pipeline 17 is connected with the fourth pipeline 15 through a seventh pipeline 18, the joint between the seventh pipeline 18 and the fourth pipeline 15 is positioned at the upstream of the second pressure maintaining valve 9, the joint between the seventh pipeline 18 and the sixth pipeline 17 is positioned at the downstream of the joint between the sixth pipeline 17 and the second pipeline 13, and the bidirectional pressure regulating pump 4 is electrically connected with the pressure regulating mechanism 5; the pressure regulating mechanism 5 includes a pressure regulating valve 51 and an eighth pipe 52, the sixth pipe 17 is connected to an input end of the pressure regulating valve 51, the sixth pipe 17 is connected to a pilot pressurizing port of the pressure regulating valve 51 through the eighth pipe 52, and a connection between the eighth pipe 52 and the sixth pipe 17 is located downstream of a connection between the sixth pipe 17 and the second pipe 13.
As shown in fig. 1, a third check valve 19 is disposed on the sixth pipeline 17, the third check valve 19 is located between the connection between the sixth pipeline 17 and the second pipeline 13 and the connection between the sixth pipeline 17 and the seventh pipeline 18, specifically, the third check valve 19 is located between the connection between the sixth pipeline 17 and the second pipeline 13 and the connection between the sixth pipeline 17 and the eighth pipeline 52, and a fourth check valve 20 is disposed on the seventh pipeline 18, where the third check valve 19 makes oil flow unidirectional from the bidirectional pressure regulating pump 4 or the oil tank 1 to the direction of the pressure regulating valve 51, the fourth check valve 20 makes oil flow unidirectional from the bidirectional pressure regulating pump 4 to the direction of the pressure regulating valve 51, and both the first pressure maintaining valve 6 and the second pressure maintaining valve 9 are check valves.
The output pressure of the bidirectional pressure regulating pump 4 is in direct proportion to the rotating speed, and the pressures in different directions can be output through the forward and reverse rotation of the bidirectional pressure regulating pump 4, and the specific structure is the prior art and is not repeated here; when the bidirectional pressure regulating pump 4 rotates positively, the first pump port 41 of the bidirectional pressure regulating pump 4 absorbs oil, the oil is output from the second pump port 42 after passing through the first one-way valve 2 and the first pipeline 12, the oil can not flow back to the oil tank 1 through the sixth pipeline 17 due to the action of the second one-way valve 3, the oil is output from the second pump port 42 and fed back to the pressure regulating mechanism 5 through the sixth pipeline 17 and the third one-way valve 19 to realize pressure regulation as required, the oil enters the first piston cylinder 7 after passing through the first pressure maintaining valve 6, so that the motion control and the pressure regulation of the first piston cylinder 7 are realized, when the bidirectional pressure regulating pump 4 is stopped, if the first piston cylinder 7 stores pressure, the pressure can be locked through the first pressure maintaining valve 6 and the first pressure releasing valve 8, and when the first piston cylinder 7 needs pressure release, the intermittent action of the first pressure releasing valve 8 can be controlled, and the pressure proportion of the first piston cylinder 7 is reduced is realized; when the bidirectional pressure regulating pump 4 is reversed, the second pump port 42 of the bidirectional pressure regulating pump 4 absorbs oil, oil is output from the first pump port 41 after passing through the second one-way valve 3 and the sixth pipeline 17, the oil can not flow back to the oil tank 1 through the first pipeline 12 due to the action of the first one-way valve 2, the oil is fed back to the pressure regulating mechanism 5 through the fourth one-way valve 20 to realize pressure regulation as required, and the oil flows into the second piston cylinder 10 after passing through the second pressure maintaining valve 9, so that the motion control and the pressure regulation of the second piston cylinder 10 are realized, when the bidirectional pressure regulating pump 4 is stopped, if the second piston cylinder 10 has pressure, the pressure can be locked through the second pressure maintaining valve 9 and the second pressure releasing valve 11, and when the second piston cylinder 10 needs to release pressure, the intermittent action of the second pressure releasing valve 11 can be controlled to realize the pressure proportion reduction.
During pressure maintaining, the pressure of the first piston cylinder 7 is locked due to the action of the first pressure maintaining valve 6 and the closing of the first pressure relief valve 8, and the pressure of the second piston cylinder 10 is locked due to the action of the second pressure maintaining valve 9 and the closing of the second pressure relief valve 11, so that the two-way pressure regulating pump 4 can be stopped, the system power consumption is greatly reduced, the overall efficiency is improved, the two-way pressure regulating pump 4 is used for directly regulating the load pressure, a proportional regulating valve is omitted, the system cost is reduced, and the independent pressure establishment of the first piston cylinder 7 and the second piston cylinder 10 is realized through the positive and negative rotation of the two-way pressure regulating pump 4 through the reasonable design of each one-way valve and the pressure maintaining valve, so that the system is simplified; and the first piston cylinder 7 and the second piston cylinder 10 are low-leakage piston cylinders, and the first pressure maintaining valve 6, the second pressure maintaining valve 9, the first pressure relief valve 8 and the second pressure relief valve 11 are low-leakage ball valves or low-leakage cone valves, so that leakage is reduced, and meanwhile, the ball valves and the cone valves are simple in structure relative to the sliding valves, so that the processing requirements are low, and the system cost is further reduced. In addition, to further improve accuracy, pressure sensors are connected to both the third and fifth lines 14, 16.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above-described one embodiment, and all other examples obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model.
Claims (5)
1. The utility model provides a two-way action locking hydraulic system, its characterized in that includes oil tank (1), first check valve (2), second check valve (3), two-way pressure regulating pump (4), pressure regulating mechanism (5), first pressure maintaining valve (6), first piston cylinder (7), first relief valve (8), second pressure maintaining valve (9), second piston cylinder (10) and second relief valve (11), two-way pressure regulating pump (4) include first pump mouth (41) and second pump mouth (42), first pump mouth (41) are connected with oil tank (1) through first pipeline (12), first check valve (2) set up on first pipeline (12), second pump mouth (42) are connected with first relief valve (8) through second pipeline (13), first piston cylinder (7) are connected with second pipeline (13) through third pipeline (14), first pressure maintaining valve (6) set up on second pipeline (13) and third pipeline (14) are located between first pressure maintaining valve (6) and the first relief valve (8), the second pressure relief valve (11) is connected with the first pipeline (12) through a fourth pipeline (15), the joint of the fourth pipeline (15) and the first pipeline (12) is positioned between the bidirectional pressure regulating pump (4) and the first one-way valve (2), the second piston cylinder (10) is connected with the fourth pipeline (15) through a fifth pipeline (16), the second pressure maintaining valve (9) is arranged on the fourth pipeline (15), the joint of the fifth pipeline (16) and the fourth pipeline (15) is positioned between the second pressure relief valve (11) and the second pressure maintaining valve (9), the pressure regulating mechanism (5) is connected with the oil tank (1) through a sixth pipeline (17) and the sixth pipeline (17) is connected with the second pipeline (13), the joint of the sixth pipeline (17) and the second pipeline (13) is positioned between the bidirectional pressure regulating pump (4) and the first pressure maintaining valve (6), the joint of the sixth pipeline (17) and the sixth pipeline (17) is positioned between the sixth pipeline (17) and the second one-way valve (9), the connection part between the seventh pipeline (18) and the fourth pipeline (15) is located at the upstream of the second pressure maintaining valve (9), the connection part between the seventh pipeline (18) and the sixth pipeline (17) is located at the downstream of the connection part between the sixth pipeline (17) and the second pipeline (13), and the bidirectional pressure regulating pump (4) is electrically connected with the pressure regulating mechanism (5).
2. A two-way locking hydraulic system according to claim 1, characterized in that a third one-way valve (19) is arranged on the sixth pipeline (17), the third one-way valve (19) being located between the connection of the sixth pipeline (17) and the second pipeline (13) and the connection of the sixth pipeline (17) and the seventh pipeline (18), a fourth one-way valve (20) being arranged on the seventh pipeline (18).
3. A two-way acting locking hydraulic system according to claim 1, characterized in that the pressure regulating means (5) comprises a pressure regulating valve (51) and an eighth conduit (52), the sixth conduit (17) being connected to the input of the pressure regulating valve (51), the sixth conduit (17) being connected to the pilot pressurizing port of the pressure regulating valve (51) via the eighth conduit (52).
4. A two-way acting locking hydraulic system according to claim 1, characterized in that the first piston cylinder (7) and the second piston cylinder (10) are low-leakage piston cylinders, and the first pressure maintaining valve (6), the second pressure maintaining valve (9), the first pressure relief valve (8) and the second pressure relief valve (11) are low-leakage ball valves or low-leakage cone valves.
5. A two-way locking hydraulic system according to claim 1, characterized in that pressure sensors are connected to both the third line (14) and the fifth line (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320250784.8U CN219413072U (en) | 2023-02-20 | 2023-02-20 | Two-way action locking hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320250784.8U CN219413072U (en) | 2023-02-20 | 2023-02-20 | Two-way action locking hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219413072U true CN219413072U (en) | 2023-07-25 |
Family
ID=87231171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320250784.8U Active CN219413072U (en) | 2023-02-20 | 2023-02-20 | Two-way action locking hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219413072U (en) |
-
2023
- 2023-02-20 CN CN202320250784.8U patent/CN219413072U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104032792B (en) | Variable delivery hydraulic system determined by loading machine | |
| CN102829009B (en) | Hydraulic artificial muscle hydraulic drive and control system | |
| CN111550458B (en) | Steam turbine pump cylinder control servo system and control method thereof | |
| CN103085865A (en) | Load sensitive turning hydraulic system of loading machine | |
| CN104029721B (en) | Loader hydraulic transfer | |
| CN105626844A (en) | Hydraulic control system of wet type double-clutch speed changing box | |
| CN104153419A (en) | Power control valve and loader quantitative-variable hydraulic system | |
| CN219413072U (en) | Two-way action locking hydraulic system | |
| CN208397275U (en) | The dual-clutch transmission hydraulic system of double pump driving | |
| CN101498328B (en) | Ship hydraulic station for realizing automatic cycle cooling | |
| CN116123158A (en) | Two-way action locking hydraulic system | |
| CN110332172B (en) | Hydraulic actuator with power unit internally arranged in hydraulic rod | |
| CN105329817B (en) | A kind of single pump hydraulic system of fork truck | |
| CN104006040A (en) | Multi-channel hydraulic power flow coupling and matching system | |
| CN108953306B (en) | Direct-drive type volume control electro-hydraulic servo control system of duplex pump | |
| CN103114624B (en) | The load-sensitive control system of loader | |
| CN219509912U (en) | Proportional pressure control loop | |
| CN110594222B (en) | Hydraulic valve group of unmanned agricultural machinery | |
| CN211202067U (en) | Energy-saving turbine EH oil station | |
| CN104454702A (en) | Electro-hydraulic executing power unit of turbocharging unit | |
| CN109058453B (en) | A kind of liquid transmission control method of the real-time automatic adjustment amount of changing oil | |
| CN107965572B (en) | Electro-hydraulic control system for automatic transmission | |
| CN207905007U (en) | Loader hydraulic control system | |
| CN112303221A (en) | Hydraulic control system of automatic transmission of automobile | |
| CN106838192B (en) | Screw pump-motor speed varying bending moment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |