CN103836019A - Fast-charging hydraulic shift valve - Google Patents
Fast-charging hydraulic shift valve Download PDFInfo
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- CN103836019A CN103836019A CN201410084872.0A CN201410084872A CN103836019A CN 103836019 A CN103836019 A CN 103836019A CN 201410084872 A CN201410084872 A CN 201410084872A CN 103836019 A CN103836019 A CN 103836019A
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Abstract
A fast-charging hydraulic shift valve mainly comprises a fast charging oil circuit and a buffer booster oil circuit. The buffer booster oil circuit comprises a valve body, a pressure regulating valve spool, an oil incoming throttle orifice, an accumulator master spring, an accumulator auxiliary spring, an accumulator plunger, a buffer throttle orifice, a pressure setting spool spring, a pressure setting spool, and a one-way valve (14). The fast charging oil circuit comprises a two-position three-way valve, a one-way valve (17) and a one-way valve (18). The two-position three-way valve (16) is at a normal position before shifting gears, and an oil inlet is communicated with a main oil circuit; an open oil outlet at the normal position is communicated with the oil incoming end of the one-way valve (17) and the oil incoming end of the one-way valve (18); the closed oil outlet at the normal position is communicated with the oil incoming end of the oil incoming throttle orifice of the buffer booster oil circuit, the oil outgoing end of the one-way valve (17) is communicated with a shift clutch cylinder, and the oil outgoing end of the one-way valve (18) is communicated with the oil incoming end of the oil incoming throttle orifice of the buffer booster oil circuit. According to the fast-charging hydraulic shift valve, hydraulic oil is charged into the shift clutch cylinder at the highest speed through the fast charging oil circuit, and shifting time is shortened effectively.
Description
Technical field
The present invention relates to a kind of hydraulic gear-shifting valve, particularly a kind of quick oil-filled hydraulic pressure shift valve that can effectively shorten the large-scale engineering machinery gearshift time.
Background technique
Along with engineering machinery is in development and the maturation of China, people require more and more higher for shift quality, and the dynamic power shift gear box at home application in engineering machinery is also more and more universal.The key property of dynamic power shift gear box shift gears exactly stationarity and rapidity, mainly ensure by hydraulic gear-shifting valve control shift clutch.
In shift clutch cohesive process, need experienced three stages: fast oil-filled, buffering is boosted and step is boosted.Wherein, the quick oil-filled stage need to overcome the precompression of shift clutch release spring, eliminates the gap of friction plate, and this stage directly affects the gearshift time.
Current hydraulic gear-shifting valve on the market extensively adopts structure shown in Fig. 1, and it mainly comprises valve body (1), adjusting pressuring valve core (2), meter in mouth (3), accumulator main spring (5), accumulator auxiliary spring (6), accumulator plunger (7), buffering restriction (10), pressure setting valve core spring (11), pressure setting spool (13), one-way valve (14).Its buffering principle of boosting is as follows: under original state, described adjusting pressuring valve core is in high order end position under the effect of accumulator main spring and accumulator auxiliary spring; Described accumulator plunger is in low order end position under the effect of accumulator main spring and accumulator auxiliary spring; Described pressure setting spool is in high order end position under the effect of pressure setting valve core spring.Accumulator spring chamber is connected with drainback passage (logical fuel tank) by pressure setting spool, and the hydraulic oil in accumulator spring chamber flows back to fuel tank.When gearshift, constantly oil-filled along with shift clutch oil cylinder, hydraulic oil starts to overcome the precompression of shift clutch release spring, the gap of friction plate constantly reduces until eliminate, the oil pressure at adjusting pressuring valve core oil outlet place rises, and acts on adjusting pressuring valve core left end, and the active force that adjusting pressuring valve core overcomes accumulator main spring and accumulator auxiliary spring moves to right, passage between accumulator back of the body chamber and accumulator spring chamber is turned down gradually, until close.The hydraulic oil promotion accumulator plunger that enters accumulator back of the body chamber through buffering restriction moves to left gradually, make accumulator main spring and the hardening of accumulator auxiliary spring, the oil pressure at adjusting pressuring valve core oil outlet place rises gradually, while increasing to certain value, the active force that described pressure setting spool overcomes pressure setting valve core spring moves to right and opens, cut off the oil circuit between accumulator spring chamber and drainback passage (logical fuel tank) simultaneously, hydraulic oil enters accumulator spring chamber by pressure setting spool, now accumulator spring chamber and accumulator back of the body chamber oil pressure equate and all equal the oil pressure at adjusting pressuring valve core oil outlet place, described adjusting pressuring valve core is displaced downwardly to Far Left in the effect of accumulator main spring and accumulator auxiliary spring, and accumulator plunger is displaced downwardly to rightmost in the effect of accumulator main spring and accumulator auxiliary spring, the oil pressure step at adjusting pressuring valve core oil outlet place rises to system maximum value, whole hydraulic gear-shifting valve pressure regulation process completes.
Adopt the hydraulic gear-shifting valve of this structure, hydraulic oil must could arrive shift clutch oil cylinder through hydraulic gear-shifting valve, because the aperture of meter in mouth is little, and the valve port opening of adjusting pressuring valve core constantly reduces in the course of the work, cause fluid can not be filled with fast shift clutch oil cylinder, finally cause shift clutch Oil feeding process to slow down, the gearshift time increases.
Summary of the invention
In order to overcome the deficiency of said structure hydraulic gear-shifting valve, the present invention aims to provide a kind of novel quick oil-filled hydraulic pressure shift valve that can effectively shorten the gearshift time.
The technical solution adopted for the present invention to solve the technical problems is: a kind of quick oil-filled hydraulic pressure shift valve, mainly comprises quick oil-filled oil circuit and the buffering oil circuit that boosts.
The described buffering oil circuit that boosts mainly comprises valve body (1), adjusting pressuring valve core (2), meter in mouth (3), accumulator main spring (5), accumulator auxiliary spring (6), accumulator plunger (7), buffering restriction (10), pressure setting valve core spring (11), pressure setting spool (13), one-way valve (14), and its structural principle as previously mentioned.
Described quick oil-filled oil circuit mainly comprises two position three-way valve (16), one-way valve (17), one-way valve (18).Position is in the normal state before described two position three-way valve (16) gearshift, filler opening is communicated with working connection, the oil outlet of opening on normality position is communicated with the oil inlet end of one-way valve (17) and one-way valve (18) respectively, the boost oil inlet end of oil circuit meter in mouth (3) of the oil outlet of closing on normality position and buffering is communicated with, the oil outlet end of one-way valve (17) is communicated with shift clutch oil cylinder, and the oil outlet end of one-way valve (18) is communicated with the oil inlet end that cushions the oil circuit meter in mouth that boosts.
Described two position three-way valve adopts hydraulic control form, corresponding force value that pilot pressure is set as shift clutch friction plate gap while eliminating completely.
The nominal flow rate of described two position three-way valve and one-way valve (17) is greater than boost meter in mouth and adjusting pressuring valve core in oil circuit of buffering and allows the peak rate of flow of passing through.
The gearshift initial stage, the two position three-way valve position that is in the normal state, the hydraulic oil of working connection is successively after two position three-way valve, one-way valve (17), arrive shift clutch oil cylinder, because being greater than boost meter in mouth and adjusting pressuring valve core in oil circuit of buffering, the nominal flow rate of two position three-way valve and one-way valve (17) allows the peak rate of flow of passing through, therefore the Oil feeding process of shift clutch oil cylinder is quicker.Have part hydraulic oil to enter and cushion the oil circuit that boosts through one-way valve (18), so that buffering is boosted, oil circuit is set up the initial pressure value that buffering is boosted required simultaneously.
Constantly oil-filled along with shift clutch oil cylinder, system pressure constantly rises, in the time that pressure rises to shift clutch friction plate gap and eliminates completely when corresponding force value, two position three-way valve working position changes, quick oil-filled oil circuit is cut off, and the hydraulic oil of working connection boosts after oil circuit and arrives shift clutch oil cylinder through one-way valve (18) and buffering, and is cushioned and boosted by the buffering oil circuit that boosts, reduce gearshift and impact, buffering is boosted principle as previously mentioned.
The present invention can also realize by following scheme: the as above quick oil-filled hydraulic pressure shift valve of the one described in a scheme, in the situation that other structures are constant, described two position three-way valve adopts automatically controlled form, controlled, and described electromagnet is by ECU (Electrical Control Unit) control by electromagnet.One of control mode is for to change to after new gear, and ECU (Electrical Control Unit) automatic time delay special time, in the time that eliminate completely in the clutch friction plate gap of shifting gears, sends control signal, cuts off quick oil-filled oil circuit; Two force value for ECU (Electrical Control Unit) monitoring shift clutch oil cylinder inside of control mode, change to after new gear, in the time that the force value of shift clutch oil cylinder inside reaches shift clutch friction plate gap and eliminates completely when corresponding force value, ECU (Electrical Control Unit) is sent control signal, cuts off quick oil-filled oil circuit.
The invention has the beneficial effects as follows, working connection is divided into quick oil-filled oil circuit and the buffering oil circuit that boosts, the gearshift initial stage, first oil-filled to gearshift clutch oil cylinder by quick oil-filled oil circuit, make hydraulic oil be filled with at faster speed shift clutch oil cylinder, effectively shorten the gearshift time.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural drawing of current hydraulic gear-shifting valve.
Fig. 2 is the hydraulic schematic diagram of the current hydraulic gear-shifting valve shown in Fig. 1.
Fig. 3 is the hydraulic schematic diagram of the embodiment of the present invention 1.
Fig. 4 is the hydraulic schematic diagram of the embodiment of the present invention 2.
In figure, 1. valve body, 2. adjusting pressuring valve core, 3. meter in mouth, 4. working connection, 5. accumulator main spring, 6. accumulator auxiliary spring, 7. accumulator plunger, 8. accumulator back of the body chamber, 9. accumulator spring chamber, 10. buffering restriction, 11. pressure setting valve core springs, 12. drainback passages, 13. pressure setting spools, 14. one-way valves, 15. shift clutch oil cylinder passages, 16. two position three-way valves, 17. one-way valves, 18. one-way valves, 19. electromagnet, 20. shift clutch oil cylinders.
Embodiment
Embodiment 1:
Referring to Fig. 3, a kind of quick oil-filled hydraulic pressure shift valve, mainly comprises quick oil-filled oil circuit and the buffering oil circuit that boosts.
The described buffering oil circuit that boosts mainly comprises valve body (1), adjusting pressuring valve core (2), meter in mouth (3), accumulator main spring (5), accumulator auxiliary spring (6), accumulator plunger (7), buffering restriction (10), pressure setting valve core spring (11), pressure setting spool (13), one-way valve (14) etc., and its structural principle as previously mentioned.
Described quick oil-filled oil circuit mainly comprises two position three-way valve (16), one-way valve (17), one-way valve (18).Position is in the normal state before described two position three-way valve (16) gearshift, filler opening is communicated with working connection, the oil outlet of opening on normality position is communicated with the oil inlet end of one-way valve (17) and one-way valve (18) respectively, the boost oil inlet end of oil circuit meter in mouth (3) of the oil outlet of closing on normality position and buffering is communicated with, the oil outlet end of one-way valve (17) is communicated with shift clutch oil cylinder (20), and the boost oil inlet end of oil circuit meter in mouth (3) of the oil outlet end of one-way valve (18) and buffering is communicated with.
Described two position three-way valve (16) adopts hydraulic control form, corresponding force value that pilot pressure is set as shift clutch friction plate gap while eliminating completely.
Described two position three-way valve (16) and be greater than boost meter in mouth (3) and adjusting pressuring valve core (2) in oil circuit of buffering with the nominal flow rate of one-way valve (17) and allow the peak rate of flow of passing through.
The gearshift initial stage, two position three-way valve (16) position that is in the normal state, the hydraulic oil of working connection is successively after two position three-way valve (16), one-way valve (17), arrive shift clutch oil cylinder (20), because being greater than boost meter in mouth (3) and adjusting pressuring valve core (2) in oil circuit of buffering, the nominal flow rate of two position three-way valve (16) and one-way valve (17) allows the peak rate of flow of passing through, therefore the Oil feeding process of shift clutch oil cylinder (20) is quicker.Have part hydraulic oil to enter and cushion the oil circuit that boosts through one-way valve (18), so that buffering is boosted, oil circuit is set up the initial pressure value that buffering is boosted required simultaneously.
Constantly oil-filled along with shift clutch oil cylinder (20), system pressure constantly rises, in the time that eliminate completely in the gap that pressure rises to shift clutch friction plate when corresponding force value, two position three-way valve (16) working position changes, quick oil-filled oil circuit is cut off, and the hydraulic oil of working connection boosts after oil circuit and arrives shift clutch oil cylinder (20) through one-way valve (18) and buffering, and is cushioned and boosted by the buffering oil circuit that boosts, reduce gearshift and impact, buffering is boosted principle as previously mentioned.
Embodiment 2:
Referring to Fig. 4, a quick oil-filled hydraulic pressure shift valve as described in Example 1, in the situation that other structures are constant, described two position three-way valve (16) adopts automatically controlled form, controlled by electromagnet (19), and described electromagnet (19) is by ECU (Electrical Control Unit) control.One of control mode is for to change to after new gear, and ECU (Electrical Control Unit) automatic time delay special time, in the time that eliminate completely in the clutch friction plate gap of shifting gears, sends control signal, cuts off quick oil-filled oil circuit; Two of control mode is the inner force value of ECU (Electrical Control Unit) monitoring shift clutch oil cylinder (20), change to after new gear, in the time that the inner force value of shift clutch oil cylinder (20) reaches shift clutch friction plate gap and eliminates completely when corresponding force value, ECU (Electrical Control Unit) is sent control signal, cuts off quick oil-filled oil circuit.
Claims (5)
1. a quick oil-filled hydraulic pressure shift valve, mainly comprises quick oil-filled oil circuit and the buffering oil circuit that boosts, and the described buffering oil circuit that boosts comprises and mainly comprises valve body (1), adjusting pressuring valve core (2), meter in mouth (3), accumulator main spring (5), accumulator auxiliary spring (6), accumulator plunger (7), buffering restriction (10), pressure setting valve core spring (11), pressure setting spool (13), one-way valve (14), described quick oil-filled oil circuit mainly comprises two position three-way valve (16), one-way valve (17), one-way valve (18), it is characterized in that: position is in the normal state before described two position three-way valve (16) gearshift, filler opening is communicated with working connection, the oil outlet of opening on normality position is communicated with the oil inlet end of one-way valve (17) and one-way valve (18) respectively, the boost oil inlet end of oil circuit meter in mouth (3) of the oil outlet of closing on normality position and buffering is communicated with, the oil outlet end of one-way valve (17) is communicated with shift clutch oil cylinder (20), and the boost oil inlet end of oil circuit meter in mouth (3) of the oil outlet end of one-way valve (18) and buffering is communicated with.
2. the quick oil-filled hydraulic pressure shift valve of one according to claim 1, is characterized in that: the control of described two position three-way valve (16) can adopt hydraulic control form, corresponding force value that pilot pressure is set as shift clutch friction plate gap while eliminating completely.
3. the quick oil-filled hydraulic pressure shift valve of one according to claim 1, is characterized in that: the control of described two position three-way valve (16) can adopt automatically controlled form, is controlled by electromagnet (19).
4. the quick oil-filled hydraulic pressure shift valve of one according to claim 3, it is characterized in that: described electromagnet (19) is by ECU (Electrical Control Unit) control, one of control mode is for to change to after new gear, ECU (Electrical Control Unit) automatic time delay special time, in the time that eliminate completely in the clutch friction plate gap of shifting gears, send control signal, cut off quick oil-filled oil circuit.
5. the quick oil-filled hydraulic pressure shift valve of one according to claim 4, it is characterized in that: three of control mode is the inner force value of ECU (Electrical Control Unit) monitoring shift clutch oil cylinder (20), change to after new gear, in the time that the inner force value of shift clutch oil cylinder (20) reaches shift clutch friction plate gap and eliminates completely when corresponding force value, ECU (Electrical Control Unit) is sent control signal, cuts off quick oil-filled oil circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084872.0A CN103836019A (en) | 2014-03-10 | 2014-03-10 | Fast-charging hydraulic shift valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084872.0A CN103836019A (en) | 2014-03-10 | 2014-03-10 | Fast-charging hydraulic shift valve |
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| CN103836019A true CN103836019A (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410084872.0A Pending CN103836019A (en) | 2014-03-10 | 2014-03-10 | Fast-charging hydraulic shift valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899746A (en) * | 2014-04-22 | 2014-07-02 | 四川大学 | Parallel-connection pressure reducing valve type double-oil-way fast-oil-charging hydraulic gear shift system |
| CN104776218A (en) * | 2015-03-10 | 2015-07-15 | 四川大学 | Quick-shift hydraulic system |
| CN105134677A (en) * | 2015-01-27 | 2015-12-09 | 四川大学 | Fast hydraulic gear shifting system |
| CN113819102A (en) * | 2021-10-18 | 2021-12-21 | 山东泰丰智能控制股份有限公司 | Hydraulic control system of cotton press |
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| CN102788150A (en) * | 2012-07-28 | 2012-11-21 | 四川大学 | Novel hydraulic gear-shifting pressure regulating valve |
| CN202867804U (en) * | 2012-11-09 | 2013-04-10 | 四川大学 | Hydraulic gear shifting pressure control valve |
| CN203717514U (en) * | 2014-03-10 | 2014-07-16 | 四川大学 | Fast oil charging hydraulic shifting valve |
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2014
- 2014-03-10 CN CN201410084872.0A patent/CN103836019A/en active Pending
Patent Citations (4)
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| 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 |
| CN102788150A (en) * | 2012-07-28 | 2012-11-21 | 四川大学 | Novel hydraulic gear-shifting pressure regulating valve |
| CN202867804U (en) * | 2012-11-09 | 2013-04-10 | 四川大学 | Hydraulic gear shifting pressure control valve |
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Non-Patent Citations (1)
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| 郝磊: "动力换挡变速箱调压阀的研究", 《煤矿机械》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899746A (en) * | 2014-04-22 | 2014-07-02 | 四川大学 | Parallel-connection pressure reducing valve type double-oil-way fast-oil-charging hydraulic gear shift system |
| CN105134677A (en) * | 2015-01-27 | 2015-12-09 | 四川大学 | Fast hydraulic gear shifting system |
| CN104776218A (en) * | 2015-03-10 | 2015-07-15 | 四川大学 | Quick-shift hydraulic system |
| CN113819102A (en) * | 2021-10-18 | 2021-12-21 | 山东泰丰智能控制股份有限公司 | Hydraulic control system of cotton press |
| CN113819102B (en) * | 2021-10-18 | 2023-08-08 | 山东泰丰智能控制股份有限公司 | Hydraulic control system of cotton baler |
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Application publication date: 20140604 |
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