CN111059174A - Clutch oil pressure control system of transmission - Google Patents
Clutch oil pressure control system of transmission Download PDFInfo
- Publication number
- CN111059174A CN111059174A CN201911348122.9A CN201911348122A CN111059174A CN 111059174 A CN111059174 A CN 111059174A CN 201911348122 A CN201911348122 A CN 201911348122A CN 111059174 A CN111059174 A CN 111059174A
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- China
- Prior art keywords
- valve
- valve group
- buffer
- oil pressure
- reversing
- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0221—Valves for clutch control systems; Details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/02—Control by fluid pressure
- F16D2048/0257—Hydraulic circuit layouts, i.e. details of hydraulic circuit elements or the arrangement thereof
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention provides a clutch oil pressure control system of a transmission; the hydraulic control system comprises a control valve group, a reversing valve group and a buffer valve group, wherein one end of the control valve group is connected with an electromagnetic pressure regulating valve through an internal oil duct, the other end of the control valve is connected with the reversing valve group, the other end of the reversing valve group is connected with a system working oil pressure P and the buffer valve group respectively, each electromagnetic valve in the control valve group controls one reversing valve in the reversing valve group respectively, and each buffer valve in the buffer valve group regulates the oil pressure of one clutch cylinder respectively. According to the invention, the oil pressure of the clutch is controlled by the plurality of electromagnetic valves, the reversing slide valve, the buffer valve and the buffer pressure regulating valve, so that the clutch has a gear locking function, gear shifting protection is performed by switching on and off the plurality of electromagnetic valves, the pressure regulating electromagnetic valves can be controlled according to working conditions, the buffer is regulated by the buffer pressure regulating valve, interference factors are few, the power interruption time during gear shifting is reduced as much as possible, and good gear shifting quality is realized.
Description
Technical Field
The present invention relates to a clutch oil pressure control system of a transmission.
Background
A multi-plate wet clutch oil pressure control system of a hydraulic transmission is a key technology of gear shifting control of the hydraulic transmission, and is related to the gear shifting quality and the service life of the hydraulic transmission. At present, various advanced hydraulic transmission clutch oil pressure control mostly adopts a control solenoid valve of software in an electric control unit to control pilot oil pressure, and then the pilot oil pressure is used for controlling a reversing slide valve to provide oil pressure for a clutch oil cylinder so as to control the clutch combining or releasing process, and the pilot oil pressure can be adjusted according to gears and working conditions. The mode has wider application range and is easy to realize automatic control, but the system has more components and is easy to damage, the control process has more influence factors, such as the characteristics of hydraulic medium, medium temperature, fit clearance between a valve core and a valve body, machining precision, the valve body, the valve core and the valve body, high requirements on software, machining precision and oil cleanliness and high maintenance cost, and the durability requirement is not met.
A hydraulic transmission used in a mine having a severe environment requires durability and adjustability of clutch oil pressure control, and a new invention is required.
Disclosure of Invention
In order to solve the technical problem, the invention provides a clutch oil pressure control system of a transmission.
The invention is realized by the following technical scheme.
The invention provides a clutch oil pressure control system of a transmission; the hydraulic control system comprises a control valve group, a reversing valve group and a buffer valve group, wherein one end of the control valve group is connected with an electromagnetic pressure regulating valve through an internal oil duct, the other end of the control valve is connected with the reversing valve group, the other end of the reversing valve group is connected with a system working oil pressure P and the buffer valve group respectively, each electromagnetic valve in the control valve group controls one reversing valve in the reversing valve group respectively, and each buffer valve in the buffer valve group regulates the oil pressure of one clutch cylinder respectively.
Two-position multi-way reversing slide valves 8-12 controlled by electromagnetic valves 3-7 are respectively connected with an oil duct and an oil pan of a working system oil pressure P, buffer valves 15-19 and a clutch oil cylinder control oil pressure, and a pressure reducing valve 2 is connected with the working system oil pressure and the oil pan. Each pilot proportional solenoid valve controls a two-position multi-way reversing slide valve, and each buffer valve adjusts a clutch oil cylinder to control oil pressure.
The reversing valve group comprises five two-position multi-way reversing valves, wherein four reversing valves are connected in series.
Five two-position multi-way reversing slide valves are divided into two groups, one group is of a series structure, four two-position multi-way reversing slide valves 9-12 are controlled by electromagnetic valves 4-7 and electromagnetic valves 21, oil passages which are intersected with each other among the slide valves ensure that only one clutch oil cylinder is used for feeding oil, oil is drained by the other clutch oil cylinders, and even if two or more valve cores are locked, the hydraulic transmission cannot be suppressed and stopped; the other group is a slide valve for controlling two clutches, a two-position multi-way reversing slide valve 8 is controlled by an electromagnetic valve 3 and an electromagnetic valve 14, and the clutches with engaged odd and even gears can be respectively controlled, and the two clutches with opposite directions can also be controlled. The electromagnetic valve 14, the electromagnetic valve 21 and the related oil circuit can realize the function of keeping the original gear when the power is off, namely, the gear locking function. Under a specific working condition, the pressure regulating electromagnetic valve 23 is powered on and powered off to control the buffering pressure regulating valve 22 so as to regulate the buffering process. The scheme can realize the control of oil inlet and outlet of six clutches and simultaneously combine two clutches.
And a filter screen is connected between the electromagnetic pressure regulating valve and the control valve group.
The invention has the beneficial effects that: through carrying out process control with a plurality of solenoid valves, switching-over spool valve, cushion valve and buffering pressure regulating valve to clutch oil pressure, make it have gear locking function, shift gears the protection through the break-make of a plurality of solenoid valves, can adjust the buffering through buffering pressure regulating valve according to operating mode control pressure regulating solenoid people, interference factor is few, has reduced the power off time when shifting as far as, realizes good quality of shifting.
Drawings
FIG. 1 is a hydraulic schematic of the present invention;
in the figure:
1-a pressure-regulating valve, wherein,
2-a filter screen is arranged on the upper portion of the filter screen,
3-7, 14, 21-electromagnetic valves,
8-12: a direction-changing valve is arranged on the upper portion of the valve body,
13-a priority valve, which is arranged in the valve,
15-20-a buffer valve,
19-backpressure valve.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
The invention relates to a clutch oil pressure control system of a hydraulic transmission, which consists of a pressure regulating valve 1, a filter screen 2, five electromagnetic valves 3-7, five two-position multi-way reversing slide valves 8-12, a priority valve 13, an electromagnetic valve 14, five buffer valves 15-19, a back pressure valve 20, an electromagnetic valve 21, a buffer pressure regulating valve 22 and a pressure regulating electromagnetic valve 23. The electromagnetic valve comprises electromagnetic valves 3-7, two-position multi-way reversing slide valves 8-12, an oil disc, a working system oil pressure P, buffer valves 15-19, oil ducts for controlling oil pressure of a clutch oil cylinder and the oil disc, and a pressure reducing valve 2, wherein one ends of the electromagnetic valves 3-7 are connected with an electromagnetic pressure regulating valve 1 through an internal integrated oil duct, the other ends of the electromagnetic valves are connected with the five two-position multi-way reversing slide valves 8-12 and the oil disc respectively, the two-position multi-way reversing slide valves 8-12. Each pilot proportional solenoid valve controls a two-position multi-way reversing slide valve, and each buffer valve adjusts a clutch oil cylinder to control oil pressure.
As shown in fig. 1, five two-position multi-way reversing slide valves are divided into two groups, one group is in a series structure, four two-position multi-way reversing slide valves 9-12 are controlled by electromagnetic valves 4-7 and an electromagnetic valve 21, oil passages which are mutually crossed among the slide valves ensure that only one clutch oil cylinder is fed with oil, oil is drained from the other clutch oil cylinders, and even if two or more valve cores are locked, the hydraulic transmission cannot be suppressed and stopped; the other group is a slide valve for controlling two clutches, a two-position multi-way reversing slide valve 8 is controlled by an electromagnetic valve 3 and an electromagnetic valve 14, and the clutches with engaged odd and even gears can be respectively controlled, and the two clutches with opposite directions can also be controlled. The electromagnetic valve 14, the electromagnetic valve 21 and the related oil circuit can realize the function of keeping the original gear when the power is off, namely, the gear locking function. Under a specific working condition, the pressure regulating electromagnetic valve 23 is powered on and powered off to control the buffering pressure regulating valve 22 so as to regulate the buffering process. The scheme can realize the control of oil inlet and outlet of six clutches and simultaneously combine two clutches.
Claims (3)
1. A clutch oil pressure control system of a transmission, characterized in that: the hydraulic control system comprises a control valve group, a reversing valve group and a buffer valve group, wherein one end of the control valve group is connected with an electromagnetic pressure regulating valve (1) through an internal oil duct of the control valve group, the other end of the control valve is connected with the reversing valve group, the other end of the reversing valve group is connected with a system working oil pressure P and the buffer valve group respectively, each electromagnetic valve in the control valve group controls one reversing valve in the reversing valve group respectively, and each buffer valve in the buffer valve group regulates the oil pressure of one clutch cylinder respectively.
2. The clutch oil pressure control system of a transmission according to claim 1, characterized in that: the reversing valve group comprises five two-position multi-way reversing valves, wherein four reversing valves are connected in series.
3. The clutch oil pressure control system of a transmission according to claim 1, characterized in that: and a filter screen (2) is also connected between the electromagnetic pressure regulating valve and the control valve group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911348122.9A CN111059174A (en) | 2019-12-24 | 2019-12-24 | Clutch oil pressure control system of transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911348122.9A CN111059174A (en) | 2019-12-24 | 2019-12-24 | Clutch oil pressure control system of transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111059174A true CN111059174A (en) | 2020-04-24 |
Family
ID=70303145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911348122.9A Pending CN111059174A (en) | 2019-12-24 | 2019-12-24 | Clutch oil pressure control system of transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111059174A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4093051A (en) * | 1976-08-02 | 1978-06-06 | Allis-Chalmers Corporation | Hydraulic control system for power shift transmission |
| EP0315596A2 (en) * | 1987-11-02 | 1989-05-10 | SAME S.p.A. | A hydraulic circuit for operating powershift friction clutches for tractor gearboxes |
| CN102168754A (en) * | 2011-04-08 | 2011-08-31 | 浙江万里扬变速器股份有限公司 | Hydraulic control system for wet-type double-clutch automatic transmission |
| CN105026798A (en) * | 2013-03-06 | 2015-11-04 | 奥迪股份公司 | Hydraulic system for a dual-clutch transmission |
| CN106523690A (en) * | 2016-12-16 | 2017-03-22 | 贵州凯星液力传动机械有限公司 | Multi-plate wet clutch oil pressure control system of hydrodynamic transmission |
| CN109595271A (en) * | 2018-12-26 | 2019-04-09 | 贵州凯星液力传动机械有限公司 | A kind of clutch oil pressure control system of Hydrodynamic transmission |
| CN110296212A (en) * | 2019-05-16 | 2019-10-01 | 杭州前进齿轮箱集团股份有限公司 | A kind of electrohydraulic control system of achievable multi gear position pavement construction machinery flexible shifting |
-
2019
- 2019-12-24 CN CN201911348122.9A patent/CN111059174A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4093051A (en) * | 1976-08-02 | 1978-06-06 | Allis-Chalmers Corporation | Hydraulic control system for power shift transmission |
| EP0315596A2 (en) * | 1987-11-02 | 1989-05-10 | SAME S.p.A. | A hydraulic circuit for operating powershift friction clutches for tractor gearboxes |
| CN102168754A (en) * | 2011-04-08 | 2011-08-31 | 浙江万里扬变速器股份有限公司 | Hydraulic control system for wet-type double-clutch automatic transmission |
| CN105026798A (en) * | 2013-03-06 | 2015-11-04 | 奥迪股份公司 | Hydraulic system for a dual-clutch transmission |
| CN106523690A (en) * | 2016-12-16 | 2017-03-22 | 贵州凯星液力传动机械有限公司 | Multi-plate wet clutch oil pressure control system of hydrodynamic transmission |
| CN109595271A (en) * | 2018-12-26 | 2019-04-09 | 贵州凯星液力传动机械有限公司 | A kind of clutch oil pressure control system of Hydrodynamic transmission |
| CN110296212A (en) * | 2019-05-16 | 2019-10-01 | 杭州前进齿轮箱集团股份有限公司 | A kind of electrohydraulic control system of achievable multi gear position pavement construction machinery flexible shifting |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200424 |
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