CN102927266A - Pressure control valve capable of shifting gears through hydraulic pressure - Google Patents
Pressure control valve capable of shifting gears through hydraulic pressure Download PDFInfo
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- CN102927266A CN102927266A CN2012104455401A CN201210445540A CN102927266A CN 102927266 A CN102927266 A CN 102927266A CN 2012104455401 A CN2012104455401 A CN 2012104455401A CN 201210445540 A CN201210445540 A CN 201210445540A CN 102927266 A CN102927266 A CN 102927266A
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Abstract
A pressure control valve capable of shifting gears through hydraulic pressure comprises a valve body, a pressure regulating valve core, an energy accumulator main spring, an energy accumulator sub-spring, an energy accumulator plunger, a throttling opening, a pressure setting valve core spring, a pressure setting valve core and a delay sliding block. The pressure regulating valve core and the delay sliding block can respectively regulate a connection of an oil inlet of the pressure regulating valve core and an oil pump through an interaction of the energy accumulator main spring, the energy accumulator sub-spring and the energy accumulator plunger. An oil outlet is connected with a pilot oil cavity of the pressure regulating valve core, an oil inlet of the pressure setting valve core and an oil cylinder of a gear shifting clutch are connected with a back cavity of an energy accumulator. The back cavity of the energy accumulator is connected with an energy accumulator spring cavity through an oil hole on the pressure regulating valve core. The energy accumulator spring cavity is connected with the oil inlet of the pressure setting valve core. According to the pressure control valve capable of shifting the gears through the hydraulic pressure, the delay sliding block is adopted to delay a moment when the pressure regulating valve core starts to move so as to keep a maximum opening degree of the oil outlet of the pressure regulating valve core in a fast-oil-charging stage and enable a hydraulic oil to be charged into the gear shifting clutch at a highest speed, and therefore the time of shifting the gears is effectively shortened.
Description
Technical field
The present invention relates to a kind of hydraulic shift pressure controlled valve, particularly a kind ofly can effectively shorten the large-scale engineering machinery hydraulic shift pressure controlled valve of shift time.
Background technique
Along with development and the maturation of engineering machinery in China, people require more and more higher for property of automatic shft, and the Powershift transmission at home application on the engineering machinery is also more and more universal.The key property of Powershift transmission is exactly shift smoothness and rapidity, mainly guarantees by hydraulic shift pressure controlled valve control gear shift sleeve.
Need experienced three stages in the gear shift sleeve cohesive process: fast oil-filled, buffering is boosted and step is boosted.Wherein, the quick oil-filled stage need to overcome the precompression of gear shift sleeve release spring, eliminates the gap of friction plate, and this stage directly affects shift time.
Present hydraulic shift pressure controlled valve on the market extensively adopts structure shown in Figure 1, and it mainly comprises valve body (1), adjusting pressuring valve core (2), accumulator main spring (4), accumulator auxiliary spring (5), accumulator plunger (6), restriction (9), pressure setting valve core spring (10), pressure setting spool (12) etc.Adopt the hydraulic shift pressure controlled valve of this structure, at the gear shift initial stage, the gear shift sleeve oil cylinder is oil-filled rapidly, overcome the precompression of gear shift sleeve release spring at hydraulic oil, in the process in the gap of elimination friction plate, the oil pressure at adjusting pressuring valve core oil outlet place rises, and directly act on the adjusting pressuring valve core left end, cause that adjusting pressuring valve core moves to right, thereby cause in the situation that does not eliminate fully in the Friction Disk in Shift Clutch gap, the adjusting pressuring valve core oil outlet reduces, and fluid can not be filled with the gear shift sleeve oil cylinder fast, finally cause the gear shift sleeve Oil feeding process to slow down, shift time increases.
Summary of the invention
In order to overcome the deficiency of said structure hydraulic shift pressure controlled valve, the present invention aims to provide a kind of novel hydraulic gear shift pressure controlled valve that can effectively shorten shift time.
The technical solution adopted for the present invention to solve the technical problems is: a kind of hydraulic shift pressure controlled valve mainly comprises valve body (1), adjusting pressuring valve core (2), accumulator main spring (4), accumulator auxiliary spring (5), accumulator plunger (6), restriction (9), pressure setting valve core spring (10), pressure setting spool (12), time delay slide block (15).Described adjusting pressuring valve core has the through hole that connects adjusting pressuring valve core along axis direction, described time delay slide block is assemblied in the through hole of described adjusting pressuring valve core.
Described adjusting pressuring valve core both ends of the surface are respectively along the axis direction perforate, and two bore dias are different, and macropore is away from the accumulator plunger, and aperture is near the accumulator plunger, and the different hole of described two diameters is connected, and forms described adjusting pressuring valve core along the through hole of axis direction.
Described time delay slide block is assemblied in the macropore of described adjusting pressuring valve core axis direction, and cooperates with described macropore motive sealing.
Described adjusting pressuring valve core and accumulator plunger interact by the accumulator main spring; Described time delay slide block and accumulator plunger interact by the accumulator auxiliary spring; The pretightening force of described accumulator auxiliary spring and spring rate are respectively less than pretightening force and the spring rate of described accumulator main spring.
Preferably, what have in the scope away from a side end face 0-9 millimeter of accumulator plunger of the described adjusting pressuring valve core of distance that at least one radially connects described adjusting pressuring valve core crosses oil groove or oil-through hole, and the described cross-section area of oil groove or oil-through hole of crossing is between the 0.03-60 square millimeter.
Described adjusting pressuring valve core filler opening links to each other with oil pump through the oily passage of oil pump, oil outlet links to each other with adjusting pressuring valve core guide oil pocket and pressure setting spool filler opening, simultaneously, link to each other with the gear shift sleeve oil cylinder through gear shift sleeve oil cylinder passage, through linking to each other with accumulator back of the body chamber behind the restriction; Accumulator back of the body chamber links to each other by the oilhole on the adjusting pressuring valve core with the accumulator spring chamber; The accumulator spring chamber links to each other with pressure setting spool oil outlet.
Under the original state, described adjusting pressuring valve core is in the high order end position under the effect of accumulator main spring; Described time delay slide block is in the high order end position under the effect of accumulator auxiliary spring; Described accumulator plunger is in the low order end position under the effect of accumulator main spring and accumulator auxiliary spring; Described pressure setting spool is in the high order end position under the effect of pressure setting valve core spring.The accumulator spring chamber links to each other with drainback passage (logical fuel tank) by the pressure setting spool, and the hydraulic oil in the accumulator spring chamber flows back to fuel tank.
During gear shift, constantly oil-filled along with the gear shift sleeve oil cylinder, hydraulic oil begins to overcome the precompression of gear shift sleeve release spring, the gap of friction plate constantly reduces, in this process, the oil pressure at adjusting pressuring valve core oil outlet place rises, and enter adjusting pressuring valve core guide oil pocket, act on adjusting pressuring valve core and time delay slide block left end, because the pretightening force of accumulator auxiliary spring and spring rate be less than pretightening force and the spring rate of accumulator main spring, thus time delay slide block move right first, in this process, the adjusting pressuring valve core oil outlet keeps aperture maximum, make hydraulic oil can be filled with the fastest speed the gear shift sleeve oil cylinder, effectively shorten shift time, when time delay slide block arrives the ladder surface of the macropore of adjusting pressuring valve core upper shoulder hole and aperture intersection, begin to drive adjusting pressuring valve core and move to right, hydraulic shift pressure controlled valve pressure regulation process begins.
Along with adjusting pressuring valve core moves to right, the passage between accumulator back of the body chamber and accumulator spring chamber turns down gradually, until close.The hydraulic oil promotion accumulator plunger that enters accumulator back of the body chamber through 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, when increasing to certain value, the active force that described pressure setting spool overcomes the pressure setting valve core spring moves to right and opens, cut off simultaneously the oil circuit between accumulator spring chamber and the drainback passage (logical fuel tank), hydraulic oil enters the accumulator spring chamber by the pressure setting spool, the oil pressure of the oil pressure of accumulator spring chamber and accumulator back of the body chamber and adjusting pressuring valve core guide oil pocket equates and all equals the oil pressure at adjusting pressuring valve core oil outlet place at this moment, described adjusting pressuring valve core and time delay slide block are displaced downwardly to Far Left in the effect of accumulator main spring and accumulator auxiliary spring respectively, the 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's maximum value, and whole hydraulic shift pressure controlled valve pressure regulation process is finished.
The present invention can also realize by following scheme: the as above described a kind of hydraulic shift pressure controlled valve of a scheme, described adjusting pressuring valve core both ends of the surface are respectively along the axis direction perforate, two bore dias are identical or diameter is different, be provided with the annular stop boss between the hole that described two diameters are identical or diameter is different, two holes are connected by the mesopore of annular stop boss, form described adjusting pressuring valve core along the through hole of axis direction.
Two time delay slide blocks are assemblied in respectively described adjusting pressuring valve core both ends of the surface along in the perforate of axis direction, and one of them time delay slide block contacts with another time delay slide block after passing the mesopore of annular stop boss.Cooperate with wherein time delay slide block motive sealing away from the hole of accumulator plunger, be slidingly matched near the hole of accumulator plunger and wherein time delay slide block, the mesopore of described annular stop boss does not adopt with the time delay slide block that passes annular stop boss mesopore and is sealed and matched.
Preferably, the time delay slide block in the described close hole of accumulator plunger axially has the oil-through hole of at least one perforation, and interacts by the accumulator auxiliary spring with the accumulator plunger.
During gear shift, constantly oil-filled along with the gear shift sleeve oil cylinder, hydraulic oil begins to overcome the precompression of gear shift sleeve release spring, the gap of friction plate constantly reduces, in this process, the oil pressure at adjusting pressuring valve core oil outlet place rises, and enter adjusting pressuring valve core guide oil pocket, act on adjusting pressuring valve core and time delay slide block left end, because the pretightening force of accumulator auxiliary spring and spring rate be less than pretightening force and the spring rate of accumulator main spring, thus two time delay slide blocks move right first, in this process, the adjusting pressuring valve core oil outlet keeps aperture maximum, make hydraulic oil can be filled with the fastest speed the gear shift sleeve oil cylinder, effectively shorten shift time, when arriving the annular stop boss away from the time delay slide block in the hole of accumulator plunger, begin to drive adjusting pressuring valve core and move to right, hydraulic shift pressure controlled valve pressure regulation process begins.
The realization principle of other processes of this scheme is identical with a upper scheme.
The invention has the beneficial effects as follows, utilize time delay slide block that the moment that adjusting pressuring valve core begins to move is delayed, thereby can remain that in the quick oil-filled stage adjusting pressuring valve core oil outlet aperture is maximum, make hydraulic oil be filled with gear shift sleeve with prestissimo, effectively shorten shift time.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural drawing of present hydraulic shift pressure controlled valve.
Fig. 2 is the structural drawing of the embodiment of the invention 1.
Fig. 3 is the structural drawing of the embodiment of the invention 2.
Among the figure, 1. valve body, 2. adjusting pressuring valve core, 3. oil pump comes oily passage, 4. accumulator main spring, 5. accumulator auxiliary spring, 6. accumulator plunger, 7. accumulator back of the body chamber, 8. accumulator spring chamber, 9. restriction, 10. pressure setting valve core spring, 11. drainback passages, 12. the pressure setting spool, 13. gear shift sleeve oil cylinder passages, 14. adjusting pressuring valve core guide oil pockets, 15. time delay slide block, 16. time delay slide blocks, 17. annular stop boss
Embodiment
Embodiment 1:
Referring to Fig. 2, a kind of hydraulic shift pressure controlled valve mainly comprises valve body (1), adjusting pressuring valve core (2), accumulator main spring (4), accumulator auxiliary spring (5), accumulator plunger (6), restriction (9), pressure setting valve core spring (10), pressure setting spool (12), time delay slide block (15).Described adjusting pressuring valve core (2) has the through hole that connects adjusting pressuring valve core (2) along axis direction, described time delay slide block (15) is assemblied in the through hole of described adjusting pressuring valve core (2).
Described adjusting pressuring valve core (2) both ends of the surface are respectively along the axis direction perforate, two bore dias are different, and macropore is away from accumulator plunger (6), and aperture is near accumulator plunger (6), the different hole of described two diameters is connected, and forms described adjusting pressuring valve core (2) along the through hole of axis direction.
Described time delay slide block (15) is assemblied in the macropore of described adjusting pressuring valve core (2) axis direction, and cooperates with described macropore motive sealing.
Described adjusting pressuring valve core (2) interacts by accumulator main spring (4) with accumulator plunger (6); Described time delay slide block (15) interacts by accumulator auxiliary spring (5) with accumulator plunger (6); The pretightening force of described accumulator auxiliary spring (5) and spring rate are respectively less than pretightening force and the spring rate of described accumulator main spring (4).
Preferably, what have in the scope away from a side end face 0-9 millimeter of accumulator plunger (6) of the described adjusting pressuring valve core of distance (2) that at least one radially connects described adjusting pressuring valve core (2) crosses oil groove or oil-through hole, and the described cross-section area of oil groove or oil-through hole of crossing is between the 0.03-60 square millimeter.
Described adjusting pressuring valve core (2) filler opening links to each other with oil pump through the oily passage of oil pump (3), oil outlet links to each other with adjusting pressuring valve core guide oil pocket (14) and pressure setting spool (12) filler opening, simultaneously, link to each other with the gear shift sleeve oil cylinder through gear shift sleeve oil cylinder passage (13), through linking to each other with accumulator back of the body chamber (7) behind the restriction (9); Accumulator back of the body chamber (7) links to each other by the oilhole on the adjusting pressuring valve core (2) with accumulator spring chamber (8); Accumulator spring chamber (8) links to each other with pressure setting spool (12) oil outlet.
Under the original state, described adjusting pressuring valve core (2) is in the high order end position under the effect of accumulator main spring (4); Described time delay slide block (15) is in the high order end position under the effect of accumulator auxiliary spring (5); Described accumulator plunger (6) is in the low order end position under the effect of accumulator main spring (4) and accumulator auxiliary spring (5); Described pressure setting spool (12) is in the high order end position under the effect of pressure setting valve core spring (10).Accumulator spring chamber (8) links to each other with drainback passage (11) (logical fuel tank) by pressure setting spool (12), and the hydraulic oil in the accumulator spring chamber (8) flows back to fuel tank.
During gear shift, constantly oil-filled along with the gear shift sleeve oil cylinder, hydraulic oil begins to overcome the precompression of gear shift sleeve release spring, the gap of friction plate constantly reduces, in this process, the oil pressure at adjusting pressuring valve core (2) oil outlet place rises, and enter adjusting pressuring valve core guide oil pocket (14), act on adjusting pressuring valve core (2) and time delay slide block (15) left end, because the pretightening force of accumulator auxiliary spring (5) and spring rate are less than pretightening force and the spring rate of accumulator main spring (4), therefore time delay slide block (15) moves right first, in this process, adjusting pressuring valve core (2) oil outlet keeps aperture maximum, make hydraulic oil can be filled with the fastest speed the gear shift sleeve oil cylinder, effectively shorten shift time, when time delay slide block (15) arrives the ladder surface of the macropore of adjusting pressuring valve core (2) upper shoulder hole and aperture intersection, begin to drive adjusting pressuring valve core (2) and move to right, hydraulic shift pressure controlled valve pressure regulation process begins.
Along with adjusting pressuring valve core (2) moves to right, the passage between accumulator back of the body chamber (7) and accumulator spring chamber (8) turns down gradually, until close.The hydraulic oil promotion accumulator plunger (6) that enters accumulator back of the body chamber (7) through restriction (9) moves to left gradually, make accumulator main spring (4) and accumulator auxiliary spring (5) hardening, the oil pressure at adjusting pressuring valve core (2) oil outlet place rises gradually, when increasing to certain value, the active force that described pressure setting spool (12) overcomes pressure setting valve core spring (10) moves to right and opens, cut off simultaneously the oil circuit between accumulator spring chamber (8) and the drainback passage (11) (logical fuel tank), hydraulic oil enters accumulator spring chamber (8) by pressure setting spool (12), the oil pressure of the oil pressure of accumulator spring chamber this moment (8) and accumulator back of the body chamber (7) and adjusting pressuring valve core guide oil pocket (14) equates and all equals the oil pressure at adjusting pressuring valve core (2) oil outlet place, described adjusting pressuring valve core (2) and time delay slide block (15) are displaced downwardly to Far Left in the effect of accumulator main spring (4) and accumulator auxiliary spring (5) respectively, accumulator plunger (6) is displaced downwardly to rightmost in the effect of accumulator main spring (4) and accumulator auxiliary spring (5), the oil pressure step at adjusting pressuring valve core (2) oil outlet place rises to system's maximum value, and whole hydraulic shift pressure controlled valve pressure regulation process is finished.
Embodiment 2:
Referring to Fig. 3, a kind of hydraulic shift pressure controlled valve as described in Example 1, described adjusting pressuring valve core (2) both ends of the surface are respectively along the axis direction perforate, two bore dias are identical or diameter is different, be provided with annular stop boss (17) between the hole that described two diameters are identical or diameter is different, two holes are connected by the mesopore of annular stop boss (17), form described adjusting pressuring valve core (2) along the through hole of axis direction.
Two time delay slide blocks (15) and (16) are assemblied in respectively described adjusting pressuring valve core (2) both ends of the surface along in the perforate of axis direction, and wherein time delay slide block (16) contacts with another time delay slide block (15) after passing the mesopore of annular stop boss (17).Cooperate with wherein time delay slide block (15) motive sealing away from the hole of accumulator plunger (6), be slidingly matched near the hole of accumulator plunger (6) and time delay slide block (16) wherein, the mesopore of annular stop boss (17) and time delay slide block (16) do not adopt and are sealed and matched.
Preferably, described time delay slide block (16) axially has the oil-through hole of at least one perforation, and interacts by accumulator auxiliary spring (5) with accumulator plunger (6).
During gear shift, constantly oil-filled along with the gear shift sleeve oil cylinder, hydraulic oil begins to overcome the precompression of gear shift sleeve release spring, the gap of friction plate constantly reduces, in this process, the oil pressure at adjusting pressuring valve core (2) oil outlet place rises, and enter adjusting pressuring valve core guide oil pocket (14), act on adjusting pressuring valve core (2) and time delay slide block (15) left end, because the pretightening force of accumulator auxiliary spring (5) and spring rate are less than pretightening force and the spring rate of accumulator main spring (4), therefore time delay slide block (15) drives time delay slide block (16) and moves right first, in this process, adjusting pressuring valve core (2) oil outlet keeps aperture maximum, make hydraulic oil can be filled with the fastest speed the gear shift sleeve oil cylinder, effectively shorten shift time, when time delay slide block (15) arrives annular stop boss (17), begin to drive adjusting pressuring valve core (2) and move to right, hydraulic shift pressure controlled valve pressure regulation process begins.
The realization principle of other processes of this embodiment is identical with embodiment 1.
Claims (10)
1. hydraulic shift pressure controlled valve, mainly comprise valve body, adjusting pressuring valve core, accumulator main spring, accumulator auxiliary spring, accumulator plunger, restriction, pressure setting valve core spring, pressure setting spool, time delay slide block, it is characterized in that: described adjusting pressuring valve core has the through hole that connects adjusting pressuring valve core along axis direction, described time delay slide block is assemblied in the through hole of described adjusting pressuring valve core.
2. a kind of hydraulic shift pressure controlled valve according to claim 1 is characterized in that: the pretightening force of described accumulator auxiliary spring and spring rate are respectively less than pretightening force and the spring rate of described accumulator main spring.
3. a kind of hydraulic shift pressure controlled valve according to claim 1, it is characterized in that: what have in the scope away from a side end face 0-9 millimeter of accumulator plunger of the described adjusting pressuring valve core of distance that at least one radially connects described adjusting pressuring valve core crosses oil groove or oil-through hole, and the described cross-section area of oil groove or oil-through hole of crossing is between the 0.03-60 square millimeter.
4. a kind of hydraulic shift pressure controlled valve according to claim 1, it is characterized in that: described adjusting pressuring valve core both ends of the surface are respectively along the axis direction perforate, two bore dias are different, macropore is away from the accumulator plunger, aperture is near the accumulator plunger, the different hole of described two diameters is connected, and forms described adjusting pressuring valve core along the through hole of axis direction.
5. a kind of hydraulic shift pressure controlled valve according to claim 4, it is characterized in that: described time delay slide block is assemblied in the macropore of described adjusting pressuring valve core axis direction, and cooperate with described macropore motive sealing, described time delay slide block and accumulator plunger interact by the accumulator auxiliary spring.
6. a kind of hydraulic shift pressure controlled valve according to claim 1, it is characterized in that: described adjusting pressuring valve core both ends of the surface are respectively along the axis direction perforate, two bore dias are identical or diameter is different, be provided with the annular stop boss between the hole that described two diameters are identical or diameter is different, two holes are connected by the mesopore of annular stop boss, form described adjusting pressuring valve core along the through hole of axis direction.
7. a kind of hydraulic shift pressure controlled valve according to claim 6, it is characterized in that: two time delay slide blocks are assemblied in respectively described adjusting pressuring valve core both ends of the surface along in the perforate of axis direction, and one of them time delay slide block contacts with another time delay slide block after passing the mesopore of annular stop boss.
8. a kind of hydraulic shift pressure controlled valve according to claim 7, it is characterized in that: cooperate with wherein time delay slide block motive sealing away from the hole of accumulator plunger, be slidingly matched near the hole of accumulator plunger and time delay slide block wherein, the mesopore of annular stop boss does not adopt with the time delay slide block that passes annular stop boss mesopore and is sealed and matched.
9. a kind of hydraulic shift pressure controlled valve according to claim 7 is characterized in that: the oil-through hole that axially has at least one perforation near the time delay slide block in the hole of accumulator plunger.
10. a kind of hydraulic shift pressure controlled valve according to claim 7 is characterized in that: interact by the accumulator auxiliary spring near the time delay slide block in the hole of accumulator plunger and accumulator plunger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445540.1A CN102927266B (en) | 2012-11-09 | 2012-11-09 | Pressure control valve capable of shifting gears through hydraulic pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210445540.1A CN102927266B (en) | 2012-11-09 | 2012-11-09 | Pressure control valve capable of shifting gears through hydraulic pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102927266A true CN102927266A (en) | 2013-02-13 |
| CN102927266B CN102927266B (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210445540.1A Expired - Fee Related CN102927266B (en) | 2012-11-09 | 2012-11-09 | Pressure control valve capable of shifting gears through hydraulic pressure |
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2012
- 2012-11-09 CN CN201210445540.1A patent/CN102927266B/en not_active Expired - Fee Related
Patent Citations (6)
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|---|---|---|---|---|
| US20020094903A1 (en) * | 2001-01-18 | 2002-07-18 | Twin Disc, Incorporated | Modulatable power transmission clutch and a marine transmission |
| EP1517067A2 (en) * | 2003-09-18 | 2005-03-23 | JATCO Ltd | Hydraulic control device for automatic transmission |
| CN2804450Y (en) * | 2005-06-01 | 2006-08-09 | 刘恒海 | Balancing valve |
| CN2929362Y (en) * | 2006-03-20 | 2007-08-01 | 杭州前进齿轮箱集团有限公司 | HYdraulic controller for ship gearbox |
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