CN202017762U - Novel electrohydraulic control operating valve - Google Patents
Novel electrohydraulic control operating valve Download PDFInfo
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- CN202017762U CN202017762U CN2011201495624U CN201120149562U CN202017762U CN 202017762 U CN202017762 U CN 202017762U CN 2011201495624 U CN2011201495624 U CN 2011201495624U CN 201120149562 U CN201120149562 U CN 201120149562U CN 202017762 U CN202017762 U CN 202017762U
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Abstract
The utility model relates to an operating valve, in particular to a novel electrohydraulic control operating valve, which mainly solves the technical problems that a speed change valve in the prior art is functionally insufficient in actual operation, no four-drive control oil circuit is provided, a circuit control system of an electromagnetic valve is easy to cause gear mixing once failed, main oil pressure of a speed change operating valve is still under operating pressure when a speed changing box is set to a neutral position, energy saving effect is poor, and the like. The novel electrohydraulic control operating valve comprises a valve body (1), and is characterized in that a pressure control device, a gear control device and a four-drive control device are arranged on the valve body (1) and communicated through a main oil circuit (2), the pressure control device comprises a pressure control mechanism and an energy storage damping mechanism, and an oil inlet (3) arranged at the bottom of the valve body is connected with a relief oil return port (4), an operation oil port A (5), an operation oil port B (6) and an oil return cavity (7) of a torque converter.
Description
Technical field
The utility model relates to a kind of control valve, especially relates to a kind of novel electrichydraulic control control valve.
Background technique
At present loader uses the two last third gear machine hydraulic control system speed change control valves that fall basically, though this speed change control valve is through multinomial technique improvements such as electrofluidic control devices, but do not satisfy current domestic and international market engineering machinery, build and build machinery, excavation machinery, wheeled excavating loader etc. particularly, the needs of novel engineering machinery development.Chinese patent discloses a kind of electric liquid speed change valve (notice of authorization CN2559818Y), it includes solenoid valve, valve body the right has a solenoid valve is arranged respectively in three valve openings, in the upper left valve opening of valve body pressure adjusting spring is housed, the pressure regulation pad, relief pressure valve cartridge and adjust pad is installed in by plug screw that guiding valve is provided with the throttling pore of stablizing oil circuit pressure in the valve opening, but function is not enough in this speed change valve real work, does not have the 4 wheel driven control oil channel; Be easy to generate random shelves after in a single day the circuit control system of solenoid valve breaks down, when gearbox was hung neutral gear, speed change control valve main oil pressure still was in the working pressure state, and energy-saving effect is poor.
The model utility content
The utility model provides a kind of novel electrichydraulic control control valve, it mainly is that function is not enough in the real work of solution existing in prior technology speed change valve, there is not the 4 wheel driven control oil channel, be easy to generate random shelves after in a single day the circuit control system of solenoid valve breaks down, when gearbox is hung neutral gear, speed change control valve main oil pressure still is in the working pressure state, the technical problem of energy-saving effect difference etc.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
A kind of novel electrichydraulic control control valve of the present utility model, comprise valve body, described valve body is provided with pressure control device, shift-position control apparatus, 4 wheel driven control gear, be communicated with by working connection therebetween, wherein pressure control device comprises pressure control mechanism and accumulation of energy damping mechanism, and the bottom surface of valve body is established filler opening, connected decompression return opening, A actuator port, B actuator port and the oil back chamber of torque-converters.The pressure controlled valve of pressure control mechanism is set 1.2-1.55Mpa with speed change control valve main oil pressure, and main oil pressure can be adjusted setting range according to the requirement of gearbox, and the pressure buffer the during gear shift of accumulation of energy damping mechanism control speed change valve reaches smooth shifting.Shift-position control apparatus is established neutral gear, A shelves, three work of B shelves gear, the electromagnetism valve rod is connected with the gear shift valve rod, 2 electromagnetic coils are sleeved on the electromagnetism valve rod of thread cartridge formula solenoid valve, two electromagnetic coils are controlled gear shift valve rod A shelves and B shelves respectively, when 2 electromagnetic coils are closed simultaneously, when the gear shift valve rod is in neutral, the main oil pressure of speed change control valve is 0Mpa, at this moment the variable speed drives oil pump is in unloaded state, the speed-change and gearshift system oil-way also is in circulation under the low-pressure state, has so just reached remarkable energy saving effect.The gear change system oil circuit moves under low-pressure state during simultaneously owing to neutral, and the interior circuit hydraulic oil temperature of oil-way system is effectively reduced, and has prolonged the life-span of speed change valve rubber seal.
As preferably, described pressure control mechanism comprises the first inner spacing jump ring, first spacing jump ring right side dress stop collar, the second spacing jump ring is adorned on the stop collar right side, second spacing jump ring right side dress control piston, adorn relief spring between stop collar and the control piston, it is spacing fixing that the 3rd spacing jump ring is adorned on the control piston right side, there are an O type circle and the first plug screw oil sealing to fix on the 3rd spacing jump ring right side valve opening, filler opening is established in valve body bottom surface between the control piston and first plug screw, the decompression return opening is established in valve body bottom at the control piston corresponding position, establishes torque-converters pressure measurement hydraulic fluid port at the corresponding position of valve body front return opening.The pressure oil of oil pump input speed change control valve filler opening during work, forming the pushed at high pressure control piston between oil suction chamber and plug screw moves to left, at this moment filler opening is communicated with the decompression return opening, part pressure oil enters torque-converters work by the decompression return opening, the pressure 0.3-0.5Mpa of decompression return opening, can meet the demands, relief spring is set in 1.2-1.55Mpa with main oil pressure, can require the setting pressure scope according to different gearboxes, and enter work structuring such as buffer structure by the main oil-hole at control piston center.
As preferably, described accumulation of energy damping mechanism comprises in the first spacing jump ring left side installation that is located at valve inner to piston, interior first damping spring to piston left side dress, string is adorned second damping spring in first damping spring, in to piston left side, string dress limiting stopper in second damping spring, adorn the 3rd damping spring in second damping spring inner limited block left side, the export-oriented piston of first damping spring left side suit accumulation of energy, the export-oriented piston of accumulation of energy is contained in the piston hole of protecgulum, the first sealing paper washer is established on the protecgulum right side, dividing plate is established on the first sealing paper washer right side, the dividing plate right side is established the second sealing paper washer and is connected with valve body, protecgulum is by first screw, second gasket seal is fixed on the valve body, the buffering return opening is established in interior valve body bottom to the piston corresponding position, establish the one-way valve oil circuit to the piston below in the valve body substantially horizontal, the one-way valve oil circuit be connected with working connection above the valve body front establish working connection pressure measurement hydraulic fluid port, establish check valve spring at the bottom of the unidirectional valve pocket, check valve spring withstands the one-way valve steel ball, steel ball withstands on the one-way valve port on the dividing plate, establish the export-oriented piston oil circuit that is communicated with between one-way valve and the export-oriented piston of accumulation of energy on the protecgulum, throttle orifice is established on the one-way valve port next door of dividing plate.The working connection at gear shift valve rod place is communicated with return opening when shift valve ports valve bar is in neutral gear, one-way valve opens, and position when the export-oriented piston of accumulation of energy returns to by dress, main oil pressure at this moment is 0Mpa.When the gear shift valve rod was in running order, gear shift valve rod return opening was closed, and main oil pressure begins to boost, pressure moment impact when overcoming gear shift, and interior moving to left to piston exposed the return opening release.When the gear shift valve rod is in the work range state, at this moment closed check valve, the partial pressure oil of working connection enters the export-oriented piston left end of accumulation of energy by throttle orifice, forming the export-oriented piston of pushed at high pressure accumulation of energy between protecgulum and the export-oriented piston of accumulation of energy moves to right, pressure spring moves to right near the first spacing jump ring to piston in driving, close interior return opening to the piston place, make main oil pressure rise to the 1.2-1.5Mpa of setting, pressure rising time 1.0-1.6S, thereby the moment impact when having eliminated the gear shift of speed change control valve, reach the gearbox smooth shifting, prolonged the working life of gearbox, improved the travelling comfort of operation.
As preferably, described shift-position control apparatus comprises the gear shift valve rod that is located at valve inner, suit first spacing shim on the gear shift valve rod right-hand member spindle nose, first Returnning spring is adorned in the outside, the first spacing shim right side, the valve opening in the Returnning spring outside is fixed by the 2nd O type circle and the second plug screw oil sealing, adorn second spacing shim on the gear shift valve rod left end shaft head, second Returnning spring is adorned in second spacing shim left side, on the valve opening of second Returnning spring outside thread cartridge formula solenoid valve is housed, thread cartridge formula solenoid valve is provided with A electromagnetic coil and B electromagnetic coil, the electromagnetism valve rod of thread cartridge formula solenoid valve is connected end face the 3rd O type circle is housed with valve body, the coupling shaft of thread cartridge formula solenoid valve and the socket of commutation valve rod left end, the A actuator port is established in the valve body bottom surface, the B actuator port is in the valve body front surface A, the corresponding position of B actuator port is established A pressure measurement hydraulic fluid port and B pressure measurement hydraulic fluid port.Open the A electromagnetic coil, solenoid valve coupling shaft pulling gear shift valve rod moves to left and is communicated with A shelves oil circuit; Close the A electromagnetic coil, second Returnning spring promotion gear shift valve rod moves to right and is reset to the neutral position.Open the B electromagnetic coil, solenoid valve coupling shaft promotion gear shift valve rod moves to right and is communicated with B shelves oil circuit, closes the B electromagnetic coil, and first Returnning spring promotion gear shift valve rod moves to left and is reset to the neutral position.Open and close by A electromagnetic coil and B electromagnetic coil is finished advancing of gearbox, and gear shift falls back.Because the gear shift valve rod is when being in the neutral position, working connection is communicated with oil back chamber, at this moment when transmission neutral, and the main oil pressure 0Mpa of speed change valve, thus reach effects of energy saving and emission reduction, and the working life of prolongation speed change valve, Sealing and oil pump, gearbox part.
As preferably, described 4 wheel driven control gear comprises the plug-type two-position three way magnetic valve of the screw thread that is located at valve inner, suit C electromagnetic coil on the valve rod of two-position three way magnetic valve, and there is locking nut to lock, two-position three way magnetic valve is connected end face and is provided with the sealing of the 4th O type circle with valve body, working connection is communicated with the solenoid valve filler opening, in the valve body front, two-position three way magnetic valve correspondence top is provided with the 4 wheel driven actuator port that connects the 4 wheel driven control gear, and the technology hydraulic fluid port of solenoid valve substantially horizontal has second gasket seal and the second screw sealing and fixing below valve body.(when forward gears or backward gear are opened) opens two-position three way magnetic valve when the gearshift mechanism working state, and the pressure of two-position three way magnetic valve solenoid valve actuator port is consistent with main oil pressure.When the gearshift mechanism neutral state, open or close two-position three way magnetic valve, the pressure of two-position three way magnetic valve actuator port is zero.When the gearshift mechanism working state, open the process that the two-position three way magnetic valve main oil pressure has individual explosive decompression, boosts, after reducing to 0.5 Mpa, main oil pressure is raised to setting pressure from setting again rapidly.The working state of dragging bridge by the unlatching or the closing control of two-position three way magnetic valve.The 4 wheel driven dynamic control device can design and electrichydraulic control control valve main valve body split-type design, and electrichydraulic control control valve working connection enters the 4 wheel driven solenoid valve by transition plate.
As preferably: the filler opening of control valve, actuator port, the return opening design can connect with the excessive plate of oil circuit according to the design needs of different gearboxes in the valve body bottom, blocks oil impregnate with the sealing paper washer between valve body and the oil circuit transition plate.
Therefore, control valve of the present utility model advances, falls back outside the control of gear, oil circuit possessing gearbox, also has 4 wheel driven control, by the gearbox gear mechanism design, 4 forward gearss of may command, 4 backward gears, wherein the 1-3 shelves are realized four-wheel drive, realize the centralized control of a plurality of mechanisms.The control valve gearshift mechanism adopts and pushes away, the pull-up structure design, drive the gear shift valve rod with solenoid valve, switch A, B work gear, possess do not go here and there shelves advantage, when control valve gearshift mechanism neutral state, the oil-way system of control valve, gearbox all moves under low-pressure state, has effectively prolonged the life-span of component, and has reached tangible effects of energy saving and emission reduction.Control valve accumulation of energy buffer structure modern design is eliminated shifting shock, realizes the gearbox flexibility effect of running in, and has the transmission efficiency height simultaneously, characteristics such as long service life.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model;
Accompanying drawing 2 is cross-sectional view of the present utility model;
Accompanying drawing 3 is oil circuit floor map of the present utility model;
Accompanying drawing 4 is A portion structure for amplifying schematic representation of Fig. 2.
Component among the figure, position and numbering: valve body 1, working connection 2, filler opening 3, decompression return opening 4, A actuator port 5, B actuator port 6, oil back chamber 7, the first spacing jump ring 8, stop collar 9, the second spacing jump ring 10, control piston 11, relief spring 12, the 3rd spacing jump ring 13, the one O type circle 14, first plug screw 15, torque-converters pressure measurement hydraulic fluid port 16, first damping spring 17, second damping spring 18, interior to piston 19, limiting stopper 20, the 3rd damping spring 21, the export-oriented piston 22 of accumulation of energy, protecgulum 23, the first sealing paper washer 24, dividing plate 25, the second sealing paper washer 26, first screw 27, buffering return opening 28, one-way valve oil circuit 29, working connection pressure measurement hydraulic fluid port 30, check valve spring 31, one-way valve steel ball 32, one-way valve port 33, export-oriented piston oil circuit 34, throttle orifice 35, gear shift valve rod 36, first spacing shim 37, first Returnning spring 38, the 2nd O type circle 39, second plug screw 40, second spacing shim 41, second Returnning spring 42, thread cartridge formula solenoid valve 43, the 3rd O type circle 44, coupling shaft 45, A pressure measurement hydraulic fluid port 46, B pressure measurement hydraulic fluid port 47, two-position three way magnetic valve 48, C electromagnetic coil 49, locking nut 50, the 4th O type circle 51, solenoid valve filler opening 52,4 wheel driven actuator port 53, second gasket seal 54, second screw 55, first gasket seal 56, A electromagnetic coil 57, B electromagnetic coil 58.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of novel electrichydraulic control control valve of this example, as Fig. 1, Fig. 2, Fig. 3, a valve body 1 is arranged, valve body is provided with pressure control device, shift-position control apparatus, 4 wheel driven control gear, be communicated with by working connection 2 therebetween, wherein pressure control device comprises pressure control mechanism and accumulation of energy damping mechanism, and filler opening 3, the decompression return opening 4 that connects torque-converters, A actuator port 5, B actuator port 6 and oil back chamber 7 are established in the bottom surface of valve body.
Pressure control mechanism, comprise the first inner spacing jump ring 8, first spacing jump ring right side dress stop collar 9, the second spacing jump ring 10 is adorned on the stop collar right side, second spacing jump ring right side dress control piston 11, dress relief spring 12 between stop collar and the control piston, the 3rd spacing jump ring 13 spacing fixing are adorned on the control piston right side, there are an O type circle 14 and 15 oil sealings of first plug screw to fix on the 3rd spacing jump ring right side valve opening, filler opening 3 is established in valve body bottom surface between the control piston and first plug screw, establish decompression return opening 4 in valve body 1 bottom of control piston corresponding position, establish torque-converters pressure measurement hydraulic fluid port 16 at the corresponding position of valve body front return opening.
The accumulation of energy damping mechanism, first damping spring 17 that comprises the first spacing jump ring, the 8 left sides installation that is located at valve body 1 inside, string is adorned second damping spring 18 in first damping spring, the first spacing jump ring left side is provided with interior to piston 19, string dress limiting stopper 20 in second damping spring, adorn the 3rd damping spring 21 in second damping spring inner limited block left side, the export-oriented piston 22 of the first buffering left side suit accumulation of energy, the export-oriented piston of accumulation of energy is contained in the piston hole of protecgulum 23, the first sealing paper washer 24 is established on the protecgulum right side, dividing plate 25 is established on the first sealing paper washer right side, the dividing plate right side is established the second sealing paper washer 26 and is connected with valve body, protecgulum is by first screw 27, first gasket seal 56 is fixed on the valve body, buffering return opening 28 is established in interior valve body bottom to the piston corresponding position, establish one-way valve oil circuit 29 to the piston below in the valve body substantially horizontal, the one-way valve oil circuit be connected with working connection 2 above the valve body front establish working connection pressure measurement hydraulic fluid port 30, establish check valve spring 31 at the bottom of the unidirectional valve pocket, as Fig. 4, check valve spring withstands one-way valve steel ball 32, steel ball withstands on the one-way valve port 33 on the dividing plate, establish the export-oriented piston oil circuit 34 that is communicated with between one-way valve and the export-oriented piston of accumulation of energy on the protecgulum, throttle orifice 35 is established on the one-way valve port next door of dividing plate.
Shift-position control apparatus, comprise the gear shift valve rod 36 that is located at valve body 1 inside, suit first spacing shim 37 on the gear shift valve rod right-hand member spindle nose, first Returnning spring 38 is adorned in the outside, the first spacing shim right side, the valve opening in the Returnning spring outside is fixed by the 2nd O type circle 39 and 40 oil sealings of second plug screw, adorn second spacing shim 41 on the gear shift valve rod left end shaft head, second Returnning spring 42 is adorned in second spacing shim left side, on the valve opening of second Returnning spring outside thread cartridge formula solenoid valve 43 is housed, thread cartridge formula solenoid valve is provided with A electromagnetic coil 57 and B electromagnetic coil 58, the electromagnetism valve rod of thread cartridge formula solenoid valve is connected end face the 3rd O type circle 44 is housed with valve body, the coupling shaft 45 of thread cartridge formula solenoid valve and the socket of commutation valve rod left end, the valve body front is at A actuator port 5, B actuator port 6 corresponding positions are established A pressure measurement hydraulic fluid port 46 and B pressure measurement hydraulic fluid port 47.
The 4 wheel driven control gear, comprise the plug-type two-position three way magnetic valve 48 of the screw thread that is located at valve body 1 inside, suit C electromagnetic coil 49 on the valve rod of two-position three way magnetic valve, and there is locking nut 50 to lock, two-position three way magnetic valve is connected end face and is provided with 51 sealings of the 4th O type circle with valve body, working connection 2 is communicated with solenoid valve filler opening 52, in the valve body front, two-position three way magnetic valve correspondence top is provided with the 4 wheel driven actuator port 53 that connects the 4 wheel driven control gear, and the technology hydraulic fluid port of solenoid valve substantially horizontal has second gasket seal 54 and second screw, 55 sealing and fixing below valve body.
The pressure controlled valve of pressure control mechanism is set 1.2-1.5Mpa with the speed change valve main oil pressure, and the pressure buffer the during gear shift of pressure buffer mechanism controls speed change control valve reaches smooth shifting.Shift-position control apparatus is established neutral gear, A shelves, three work of B shelves gear, the electromagnetism valve rod is connected with the gear shift valve rod, 2 electromagnetic coils are sleeved on the electromagnetism valve rod, two electromagnetic coils are controlled gear shift valve rod A shelves and B shelves respectively, when 2 electromagnetic coils are closed simultaneously, when the gear shift valve rod is in neutral, the main oil pressure of speed change control valve is 0 Mpa, at this moment the variable speed drives oil pump is in unloaded state, and the speed-change and gearshift system oil-way also is in circulation under the low-pressure state, has so just reached remarkable energy saving effect.The gear change system oil circuit moves under low-pressure state during simultaneously owing to neutral, and the interior circuit hydraulic oil temperature of oil-way system is effectively reduced, and has prolonged the life-span of speed change control valve rubber seal.
The above only is a specific embodiment of the utility model, but structure characteristic of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and variation of being done or modification all are encompassed among the claim of the present utility model.
Claims (5)
1. novel electrichydraulic control control valve, comprise valve body (1), it is characterized in that described valve body (1) is provided with pressure control device, shift-position control apparatus, 4 wheel driven control gear, be communicated with by working connection (2) therebetween, wherein pressure control device comprises pressure control mechanism and accumulation of energy damping mechanism, and filler opening (3), the decompression return opening (4) that connects torque-converters, A actuator port (5), B actuator port (6) and oil back chamber (7) are established in the bottom surface of valve body.
2. a kind of novel electrichydraulic control control valve according to claim 1, it is characterized in that described pressure control mechanism comprises the first inner spacing jump ring (8), first spacing jump ring right side dress stop collar (9), the second spacing jump ring (10) is adorned on the stop collar right side, second spacing jump ring right side dress control piston (11), adorn relief spring (12) between stop collar and the control piston, it is spacing fixing that the 3rd spacing jump ring (13) is adorned on the control piston right side, there are an O type circle (14) and first plug screw (15) oil sealing to fix on the 3rd spacing jump ring right side valve opening, filler opening (3) is established in valve body bottom surface between the control piston and first plug screw, decompression return opening (4) is established in valve body (1) bottom at the control piston corresponding position, establishes torque-converters pressure measurement hydraulic fluid port (16) at the corresponding position of valve body front return opening.
3. a kind of novel electrichydraulic control control valve according to claim 1, it is characterized in that described accumulation of energy damping mechanism comprises first damping spring (17) that is located at the inner first spacing jump ring (8) the left side installation of valve body (1), string is adorned second damping spring (18) in first damping spring, the first spacing jump ring left side is provided with interior to piston (19), string dress limiting stopper (20) in second damping spring, adorn the 3rd damping spring (21) in second damping spring inner limited block left side, the export-oriented piston (22) of the first buffering left side suit accumulation of energy, the export-oriented piston of accumulation of energy is contained in the piston hole of protecgulum (23), the first sealing paper washer (24) is established on the protecgulum right side, dividing plate (25) is established on the first sealing paper washer right side, the dividing plate right side is established the second sealing paper washer (26) and is connected with valve body, protecgulum is by first screw (27), second gasket seal (26) is fixed on the valve body, buffering return opening (28) is established in interior valve body bottom to the piston corresponding position, establish one-way valve oil circuit (29) to the piston below in the valve body substantially horizontal, establish working connection pressure measurement hydraulic fluid port (30) in the valve body front, top that the one-way valve oil circuit is connected with working connection (2), establish check valve spring (31) at the bottom of the unidirectional valve pocket, check valve spring withstands one-way valve steel ball (32), steel ball withstands on the one-way valve port (33) on the dividing plate, establish the export-oriented piston oil circuit (34) that is communicated with between one-way valve and the export-oriented piston of accumulation of energy on the protecgulum, throttle orifice (35) is established on the one-way valve port next door of dividing plate.
4. a kind of novel electrichydraulic control control valve according to claim 1, it is characterized in that described shift-position control apparatus comprises the gear shift valve rod (36) that is located at valve body (1) inside, suit first spacing shim (37) on the gear shift valve rod right-hand member spindle nose, first Returnning spring (38) is adorned in the outside, the first spacing shim right side, the valve opening in the Returnning spring outside is fixed by the 2nd O type circle (39) and second plug screw (40) oil sealing, adorn second spacing shim (41) on the gear shift valve rod left end shaft head, second Returnning spring (42) is adorned in second spacing shim left side, on the valve opening of second Returnning spring outside thread cartridge formula solenoid valve (43) is housed, thread cartridge formula solenoid valve is provided with A electromagnetic coil (57) and B electromagnetic coil (58), the electromagnetism valve rod of thread cartridge formula solenoid valve is connected end face the 3rd O type circle (44) is housed with valve body, the coupling shaft (45) of thread cartridge formula solenoid valve and the socket of commutation valve rod left end, the valve body front is in A actuator port (5), B actuator port (6) corresponding position is established A pressure measurement hydraulic fluid port (46) and B pressure measurement hydraulic fluid port (47).
5. a kind of novel electrichydraulic control control valve according to claim 1, it is characterized in that described 4 wheel driven control gear comprises the plug-type two-position three way magnetic valve of screw thread (48) that is located at valve body (1) inside, suit C electromagnetic coil (49) on the valve rod of two-position three way magnetic valve, and there is locking nut (50) to lock, two-position three way magnetic valve is connected end face and is provided with the sealing of the 4th O type circle (51) with valve body, working connection (2) is communicated with solenoid valve filler opening (52), in the valve body front, two-position three way magnetic valve correspondence top is provided with the 4 wheel driven actuator port (53) that connects the 4 wheel driven control gear, and the technology hydraulic fluid port of solenoid valve substantially horizontal has second gasket seal (54) and second screw (55) sealing and fixing below valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201495624U CN202017762U (en) | 2011-05-12 | 2011-05-12 | Novel electrohydraulic control operating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201495624U CN202017762U (en) | 2011-05-12 | 2011-05-12 | Novel electrohydraulic control operating valve |
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| Publication Number | Publication Date |
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| CN202017762U true CN202017762U (en) | 2011-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201495624U Expired - Fee Related CN202017762U (en) | 2011-05-12 | 2011-05-12 | Novel electrohydraulic control operating valve |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075509A (en) * | 2013-01-30 | 2013-05-01 | 江苏柳工机械有限公司 | Power gear shift speed change operating valve with independent buffer for gears |
| CN103195920A (en) * | 2013-04-08 | 2013-07-10 | 江苏柳工机械有限公司 | Power gear-shifting speed-change control system |
| CN104776218A (en) * | 2015-03-10 | 2015-07-15 | 四川大学 | Quick-shift hydraulic system |
| CN105889574A (en) * | 2016-06-13 | 2016-08-24 | 杭州前进齿轮箱集团股份有限公司 | Operating valve for double-pull rod type gearbox with cutting function |
| CN106122143A (en) * | 2016-06-29 | 2016-11-16 | 杭州萧山叉车配件有限公司 | Loader power shift level 2 buffering handles valve |
| CN109611548A (en) * | 2018-12-03 | 2019-04-12 | 湖北航天技术研究院特种车辆技术中心 | A kind of shift control valve |
-
2011
- 2011-05-12 CN CN2011201495624U patent/CN202017762U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075509A (en) * | 2013-01-30 | 2013-05-01 | 江苏柳工机械有限公司 | Power gear shift speed change operating valve with independent buffer for gears |
| CN103075509B (en) * | 2013-01-30 | 2015-09-30 | 江苏柳工机械有限公司 | The power gear shift speed change control valve of gear individual buffer |
| CN103195920A (en) * | 2013-04-08 | 2013-07-10 | 江苏柳工机械有限公司 | Power gear-shifting speed-change control system |
| CN104776218A (en) * | 2015-03-10 | 2015-07-15 | 四川大学 | Quick-shift hydraulic system |
| CN105889574A (en) * | 2016-06-13 | 2016-08-24 | 杭州前进齿轮箱集团股份有限公司 | Operating valve for double-pull rod type gearbox with cutting function |
| CN105889574B (en) * | 2016-06-13 | 2018-04-03 | 杭州前进齿轮箱集团股份有限公司 | A kind of gearbox of dual-pulling rod type with cutting function manipulation valve |
| CN106122143A (en) * | 2016-06-29 | 2016-11-16 | 杭州萧山叉车配件有限公司 | Loader power shift level 2 buffering handles valve |
| CN106122143B (en) * | 2016-06-29 | 2018-03-09 | 杭州萧山叉车配件有限公司 | Loading machine power shift level 2 buffering manipulates valve |
| CN109611548A (en) * | 2018-12-03 | 2019-04-12 | 湖北航天技术研究院特种车辆技术中心 | A kind of shift control valve |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20111026 Termination date: 20190512 |