CN105351269A - Main control valve of gearbox - Google Patents
Main control valve of gearbox Download PDFInfo
- Publication number
- CN105351269A CN105351269A CN201510770188.2A CN201510770188A CN105351269A CN 105351269 A CN105351269 A CN 105351269A CN 201510770188 A CN201510770188 A CN 201510770188A CN 105351269 A CN105351269 A CN 105351269A
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- spool
- valve element
- gearbox
- main
- pressure regulating
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- Control Of Transmission Device (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a main control valve of a gearbox. The main control valve comprises a main valve body, and a linkage valve element A, a linkage valve element B, a main pressure adjusting valve element, a lubricating pressure adjusting valve element, a torque converter pressure adjusting valve element and a torque converter flow valve element are sequentially mounted inside the main valve body from top to bottom, a back pressure valve element and a control pressure adjusting valve element are arranged between the linkage valve element A and the linkage valve element B, and the back pressure valve element and the control pressure adjusting valve element are arranged on the left side and the right side of the main valve body respectively. A secondary oil path is optimized through a main pressure adjusting valve, gearbox protection after system power failures can be achieved through the linkage valves, and safety of the gearbox can be greatly improved.
Description
Technical field
The present invention relates to hydraulic transmission box technical field, be specifically related to a kind of gearbox control valve.
Background technique
Main control valve is the major component of hydraulic automatic operation system on hydraulic automatic gearbox, and it is the conglomerate adopting each hydraulic element of hydraulic manifold block formula, compact structure, and the pipeline substantially reduced between each hydraulic element connects, and is convenient to assembling.But there is the problem of valve body irrational distribution in existing gearbox main control valve; secondary oil circuit is caused to distribute poor; and existing gearbox main control valve does not generally have protection mechanism; namely after the unexpected power-off of system, protection mechanism is not had; control valve is caused to break down; its working life can be shortened, there is larger potential safety hazard.
Summary of the invention
The present invention aims to provide a kind of gearbox main control valve, the oil pump output oil pressure of gearbox is carried out pressure adjustment and forms torque-converters oil pressure and control oil pressure; Realize the adjustment of electromagnetic valve pressure and clutch control pressure; When there is burst outage condition, gearbox protection can be given.
The present invention is achieved by following technical solution:
A kind of gearbox main control valve, comprise main valve body, described main valve body inside is provided with interlock spool A, interlock spool B, principal pressure regulating spool, lubrication pressure regulating spool, torque converter pressure regulating spool and torque-converters flow spool from bottom to top successively, be provided with back pressure spool and pilot pressure regulating spool between described interlock spool A and interlock spool B, back pressure spool and pilot pressure regulating spool are placed in the main valve body left and right sides respectively.
Described lubrication pressure regulating spool and torque converter pressure regulating spool are placed in the left and right sides above main valve body respectively.
Described main valve body outside is provided with solenoid valve, and this solenoid valve is coaxially arranged with interlock spool A.
The invention has the beneficial effects as follows:
Compared with prior art, gearbox main control valve provided by the invention, optimizes secondary oil circuit by main pressure regulator valve, and by realizing the protection of the gearbox after system cut-off by interstage valve, considerably increases the Security of gearbox; And present invention saves the import and export that valve body interconnects, decrease the possibility of leakage; Its compact structure, can save large quantity space simultaneously; In addition, it has installs simply, and the advantages such as pressure measurement electricity is many, convenient for maintaining replacing, reduce manufacture cost.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1;
Fig. 4 is the C-C sectional view of Fig. 1;
Fig. 5 is the D-D sectional view of Fig. 1;
Fig. 6 is the E-E sectional view of Fig. 1;
Fig. 7 is the F-F sectional view of Fig. 1;
Fig. 8 is the G-G sectional view of Fig. 1;
Fig. 9 is the H-H sectional view of Fig. 1;
In figure: 1-main valve body; 2-solenoid valve; 3-interlock spool A; 4-back pressure spool; 5-pilot pressure regulating spool; 6-interlock spool B; 7-principal pressure regulating spool; 8-lubrication pressure regulating spool; 9-torque converter pressure regulating spool; 10-torque-converters flow spool.
Embodiment
Below in conjunction with accompanying drawing, technological scheme of the present invention is described further, but described in required protection domain is not limited to;
As shown in figs 1-9, gearbox main control valve provided by the invention, comprise main valve body 1, described main valve body 1 inside is provided with interlock spool A3, interlock spool B6, principal pressure regulating spool 7, lubrication pressure regulating spool 8, torque converter pressure regulating spool 9 and torque-converters flow spool 10 from bottom to top successively, be provided with back pressure spool 4 and pilot pressure regulating spool 5 between described interlock spool A3 and interlock spool B6, back pressure spool 4 and pilot pressure regulating spool 5 are placed in main valve body 1 left and right sides respectively.Described lubrication pressure regulating spool 8 and torque converter pressure regulating spool 9 are placed in the left and right sides above main valve body 1 respectively.Described main valve body 1 outside is provided with solenoid valve 2, and this solenoid valve 2 is coaxially arranged with interlock spool A3.
The present invention is by the rational deployment of valve body, and compact structure saves space, is divided into by gear box hydraulic system oil-way: main control oil circuit, torque-converters oil circuit, cooling/lubricating oil path, oil extraction oil circuit four part by this structure.
Main control oil circuit: realized by principal pressure regulating spool 7 and main valve body 1.Main control oil circuit by oil pump feed, and when required, can help reduction system main oil pressure.Hydraulic pressure peak value in main control modulating valve filtering appts main oil pressure and fluctuation thereof are to provide the level and smooth continuous print main control oil pressure helping the accuracy controlling solenoid valve movement.
Torque-converters oil circuit: realized by principal pressure regulating spool 7 and torque converter pressure regulating spool 9 and torque-converters flow spool 10.Guarantee that torque-converters can receive the correct pressure from system principal pressure modulating valve, torque-converters only has that pressure is on the low side or higher all can be automatically adjusted by torque converter pressure modulating valve.
Cooling/lubricating oil path: realized by principal pressure regulating spool 7 and lubrication pressure regulating spool 8.Gear box oil is transmitting torque and pressure not only, but also want lubrication and cooling gearbox, to protect it from wearing and tearing, corrosion, and the inefficacy caused because of overheated.Vital for the control of heat and wearing and tearing to guaranteeing that gearbox can operate satisfactorily in its operating life.A lube regulator valve is had to be used for guaranteeing enough lubricating oil pressures in cooling/lubricating oil path.When the lubricating oil pressure supplied by torque-converters overcomes the spring force of lube regulator valve, the valve body of lube regulator valve pushed away from valve seat.Gearbox fluid enters chiller unit through cooling/lubricating oil path, cools there with the radiator water be cooled to gear box oil.
Oil extraction oil circuit: realized by principal pressure regulating spool 7 and back pressure valve 4.Oil extraction oil circuit is the decompression oil circuit of gear box oil pressing system.Oil pressure in this oil circuit is minimum, and the gear box oil flowing through oil extraction oil circuit turns back in oil sump.When oil pressure has exceeded the pressure criteria kept by modulating valve, gear box oil has flow into oil extraction oil circuit from system main oil pressure oil circuit and oil extraction back pressure oil circuit.
Claims (3)
1. a gearbox main control valve, comprise main valve body (1), it is characterized in that: described main valve body (1) inside is provided with interlock spool A (3) from bottom to top successively, interlock spool B (6), principal pressure regulating spool (7), lubrication pressure regulating spool (8), torque converter pressure regulating spool (9) and torque-converters flow spool (10), back pressure spool (4) and pilot pressure regulating spool (5) is provided with between described interlock spool A (3) and interlock spool B (6), back pressure spool (4) and pilot pressure regulating spool (5) are placed in main valve body (1) left and right sides respectively.
2. gearbox main control valve according to claim 1, is characterized in that: described lubrication pressure regulating spool (8) and torque converter pressure regulating spool (9) are placed in the left and right sides, main valve body (1) top respectively.
3. gearbox main control valve according to claim 1, is characterized in that: described main valve body (1) outside is provided with solenoid valve (2), and this solenoid valve (2) is coaxially arranged with interlock spool A (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510770188.2A CN105351269B (en) | 2015-11-12 | 2015-11-12 | A kind of gearbox main control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510770188.2A CN105351269B (en) | 2015-11-12 | 2015-11-12 | A kind of gearbox main control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105351269A true CN105351269A (en) | 2016-02-24 |
| CN105351269B CN105351269B (en) | 2017-12-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510770188.2A Active CN105351269B (en) | 2015-11-12 | 2015-11-12 | A kind of gearbox main control valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN105351269B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0538243A2 (en) * | 1987-06-24 | 1993-04-21 | Kabushiki Kaisha Komatsu Seisakusho | Apparatus for controlling gear box |
| CN202371268U (en) * | 2011-12-30 | 2012-08-08 | 浙江永久科技实业有限公司 | Emergency cut-off electromagnetic valve |
| CN202510442U (en) * | 2012-03-27 | 2012-10-31 | 杭州萧山叉车配件有限公司 | Novel engineering machinery electrohydraulic control variable speed control valve |
| CN202674399U (en) * | 2012-07-17 | 2013-01-16 | 浙江中柴机器有限公司 | Gear box control valve |
| CN203348204U (en) * | 2013-07-03 | 2013-12-18 | 山东博士乐液压有限公司 | Transmission operating valve for small power shifting gearbox |
| CN203374893U (en) * | 2013-07-18 | 2014-01-01 | 山东博士乐液压有限公司 | Variable speed operating valve for hydraulic shift gearbox of engineering machine |
| CN205117868U (en) * | 2015-11-12 | 2016-03-30 | 贵州凯星液力传动机械有限公司 | Gearbox main control valve |
-
2015
- 2015-11-12 CN CN201510770188.2A patent/CN105351269B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0538243A2 (en) * | 1987-06-24 | 1993-04-21 | Kabushiki Kaisha Komatsu Seisakusho | Apparatus for controlling gear box |
| CN202371268U (en) * | 2011-12-30 | 2012-08-08 | 浙江永久科技实业有限公司 | Emergency cut-off electromagnetic valve |
| CN202510442U (en) * | 2012-03-27 | 2012-10-31 | 杭州萧山叉车配件有限公司 | Novel engineering machinery electrohydraulic control variable speed control valve |
| CN202674399U (en) * | 2012-07-17 | 2013-01-16 | 浙江中柴机器有限公司 | Gear box control valve |
| CN203348204U (en) * | 2013-07-03 | 2013-12-18 | 山东博士乐液压有限公司 | Transmission operating valve for small power shifting gearbox |
| CN203374893U (en) * | 2013-07-18 | 2014-01-01 | 山东博士乐液压有限公司 | Variable speed operating valve for hydraulic shift gearbox of engineering machine |
| CN205117868U (en) * | 2015-11-12 | 2016-03-30 | 贵州凯星液力传动机械有限公司 | Gearbox main control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105351269B (en) | 2017-12-22 |
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