CN205173453U - Engineering machinery is electro -hydraulic proportional operating valve for automatic transmission - Google Patents
Engineering machinery is electro -hydraulic proportional operating valve for automatic transmission Download PDFInfo
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- CN205173453U CN205173453U CN201520810418.9U CN201520810418U CN205173453U CN 205173453 U CN205173453 U CN 205173453U CN 201520810418 U CN201520810418 U CN 201520810418U CN 205173453 U CN205173453 U CN 205173453U
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Abstract
Engineering machinery is electro -hydraulic proportional operating valve for automatic transmission, it is mainly stacked by the main valve body, last baffle, oil transportation board and lower baffle top -down and forms, the main valve body including main pressure valve, ratio pressure reducing valve and valve body, the valve body in inserted can be in the valve body gliding main pressure case, the main pressure case encapsulates in the valve body with apron 1, the big spring of a case end pressure is on the valve body, and another end pressure is on the big terminal surface of main pressure case, a small end face joint of installing the adjusting sleeve in the main pressure case, one end and main pressure case, a nested case little spring end pressure in the big spring of case on the valve body, another end pressure on another terminal surface of adjusting sleeve, be used in the main pressure case through the adjusting sleeve with the spring force on, valve barrel cover is on the little excircle of main pressure case, and the valve barrel can slide in the valve body, two terminal surfaces respectively with the terminal surface joint of apron and main pressure case, there is the case aperture on the main pressure case with main pressure oil pocket and effect oil pocket intercommunication.
Description
Technical field
The utility model relates to a kind of engineering machinery road vehicles gearbox electric-hydraulic proportion control valve, belong to the gearbox control valve in hydraulic transmission field, especially engineering machinery automatic transmission case electric-hydraulic proportion control valve.
Background technique
The gearshift of power shift transmission of engineering machinery realizes mainly through the combination and disconnecting of wet friction clutch, the combination of wet friction clutch is realized by oil pressure push piston pressing friction sheet, for realizing this process, the hydraulic system needing the hydraulic element formations such as a cuff pressure valve, gear valve, trimmer valve has been come.For ease of installing and reduced volume, usually all hydrovalves being integrated on a valve body, making a control valve block.Existing control valve gearshift mainly manually draws valve rod to realize, i.e. machine hydraulic control system, or by electromagnetic switch valve as pilot control gear spool, then realizes different gears by the combination of solenoid valve, i.e. electrichydraulic control; But the application of such control valve has narrow limitation, can only be used on the gearbox of certain limit, the boosting curve realized by pressure controlled valve or accumulator has just no longer been changed after control valve has designed, often cause boosting curve can only be suitable for a certain class engineering machinery, on other type construction machinery gear box, application there will be the problems such as shift shock is large.
Summary of the invention
The purpose of this utility model is the deficiency overcoming prior art existence, and provides a kind of structure simple, and highly versatile, can reduce production and processing difficulty, improves the engineering machinery automatic transmission case electric-hydraulic proportion control valve of operational safety.
The purpose of this utility model has been come by following technical solution, a kind of engineering machinery automatic transmission case electric-hydraulic proportion control valve, and it stacks together from top to bottom primarily of main valve body, upper clapboard, oil transportation plate and lower clapboard; Described main valve body comprises main pressure valve, proportional pressure-reducing valve and valve body;
Be inserted with in described valve body can slide in valve body principal pressure spool, described principal pressure spool cover plate 1 is encapsulated in valve body; One spool big spring one end is pressed on valve body, and the other end is pressed on principal pressure spool large end face; One adjusting sleeve being arranged on main pressure valve in-core, one end engages with the small end face of principal pressure spool; One spool little spring one end be nested in spool big spring is pressed on valve body, and the other end is pressed on the other end of adjusting sleeve, by adjusting sleeve by spring-force driven dual on principal pressure spool; One valve pocket is enclosed within the little cylindrical of principal pressure spool, and valve pocket can slide in valve body, two end faces respectively with the end joined of cover plate and principal pressure spool; Principal pressure spool there is spool aperture be communicated with effect oil pocket by principal pressure oil pocket.
Preferred as one: described valve body to have seven lumen pores, be respectively used to proportion of installation reduction valve, the seal arrangement of each lumen pore passing ratio reduction valve is divided into again oil pocket and proportional pressure-reducing valve oil back chamber three oil pockets after proportional pressure-reducing valve pressure oil cavity, proportional pressure-reducing valve decompression, and is communicated with T mouth with the P mouth of proportional pressure-reducing valve, A mouth respectively; Seven described proportional pressure-reducing valves and main pressure valve are arranged in parallel, and left and right is distributed in valve body both sides, and wherein principal pressure spool both sides have 3, and opposite side has 4;
Described upper clapboard is arranged between main valve body and oil transportation plate, for separating the oil circuit of main valve body and oil transportation plate;
Described lower clapboard is arranged between oil transportation plate and control valve attachment face, for separating the oil circuit of oil transportation plate and control valve attachment face.
Preferred as one: described valve body to have pressure oil circuit, principal pressure one oil pocket of main pressure valve is communicated with the proportional pressure-reducing valve pressure oil cavity of seven proportional pressure-reducing valves; Have oil return circuit, main pressure valve oil back chamber is communicated with the proportional pressure-reducing valve oil back chamber of seven proportional pressure-reducing valves;
After the decompression of described proportional pressure-reducing valve, oil pocket is communicated with first clutch oil pocket, second clutch oil pocket, the 3rd clutch oil pocket, four clutches oil pocket, the 5th clutch oil pocket, the 6th clutch oil pocket respectively by the first clutch pressure oil circuit on upper clapboard and oil transportation plate, second clutch pressure oil circuit, the 3rd clutch pressure oil circuit, four clutches pressure oil circuit, the 5th clutch pressure oil circuit, the 6th clutch pressure oil circuit; After the decompression of proportional pressure-reducing valve, oil pocket to close on valve body directly to close with lockup clutch oil pocket and is communicated with.
The utility model is connected with each clutch and lockup clutch by the external oil pipe of the interface on oil transportation plate, also from oil transportation plate, directly can draw oil, is connected with each clutch and lockup clutch by interior oil circuit or interior pipe.On valve body, leave pressure tap simultaneously, pressure and the system principal pressure of each clutch can be recorded, oil transportation plate records torque-converters inlet pressure.
The utility model is by an a set of clutch of proportional pressure-relief valve control, and make control logic become comparatively simple, versatility can be strengthened greatly; Controlled the program of electro-hydraulic proportional valve by change, change clutch boosting characteristic curve very easily, thus various types of construction machinery gear box demand can be adapted to, the adaptability of control valve is strengthened greatly; Control logic and pressure controlled valve etc. regulate the simplification of the characteristic pressure elements of boosting, make the oil channel structures of control valve become comparatively simple, reduce production and processing difficulty, the reliability that improve; The application of electro-hydraulic proportional valve improves the speed of response of control system.
Accompanying drawing explanation
Fig. 1 is electric-hydraulic proportion control valve structural representation described in the utility model.
Fig. 2 is electric-hydraulic proportion control valve plan structure schematic diagram described in the utility model.
Fig. 3 is main valve body sectional structure schematic diagram described in the utility model.
Fig. 4 is oil transportation plate structure schematic diagram described in the utility model.
Fig. 5 is proportional pressure-reducing valve structural representation described in the utility model.
In Fig. 1: I-main valve body; II-upper clapboard; III-oil transportation plate; IV-lower clapboard;
In Fig. 3: I1-main pressure valve; I2-valve body; I3-proportional pressure-reducing valve; 1-cover plate; 2-principal pressure spool; 3-spool big spring; 4-spool little spring; 5-adjusting sleeve; 6-valve pocket;
PP-principal pressure one oil pocket; PW-torque-converters one oil pocket; TT-principal pressure spool oil back chamber; L closes-lockup clutch oil pocket; PZ-effect oil pocket;
P1, P2, P3, P4, P5, P6, P close-proportional pressure-reducing valve pressure oil cavity;
T1, T2, T3, T4, T5, T6, T close-proportional pressure-reducing valve oil back chamber;
A1, A2, A3, A4, A5, A6, A close the-rear oil pocket of proportional pressure-reducing valve decompression;
X-spool aperture; Y1-pressure oil circuit; Y2-oil return circuit;
In Fig. 4: SPP-principal pressure two oil pocket; SPW1-torque-converters two oil pocket; SPW2-torque-converters three oil pocket; SG-transition oil pocket; L1-first clutch oil pocket; L2-second clutch oil pocket; L3-the 3rd clutch oil pocket; L4-four clutches oil pocket; L5-the 5th clutch oil pocket; L6-the 6th clutch oil pocket; L closes-lockup clutch oil pocket;
SC-torque converter pressure oil pocket; ST1-first oil back chamber; ST2-second oil back chamber;
SY1-first clutch pressure oil circuit; SY2-second clutch pressure oil circuit; SY3-the 3rd clutch pressure oil circuit; SY4-four clutches pressure oil circuit; SY5-the 5th clutch pressure oil circuit; SY6-the 6th clutch pressure oil circuit; SY7-first torque-converters oil circuit.
Embodiment
Below in conjunction with accompanying drawing, detailed introduction is done to the utility model mode of execution: as shown in Figure 1, engineering machinery automatic transmission case electric-hydraulic proportion control valve described in the utility model, it stacks together from top to bottom primarily of main valve body I, upper clapboard II, oil transportation plate III and lower clapboard IV;
Described main valve body I comprises main pressure valve I1, proportional pressure-reducing valve I3 and valve body I2.
Be inserted with in described valve body I2 can slide in valve body I2 principal pressure spool 2, described principal pressure spool 2 is encapsulated in valve body I2 by valve body I2 and cover plate 1; One spool big spring 3 one end is pressed on valve body I2, and the other end is pressed on principal pressure spool 2 large end face; One is arranged on the adjusting sleeve 5 in principal pressure spool 2, and one end engages with the small end face of principal pressure spool 2; One spool little spring 4 one end be nested in spool big spring 3 is pressed on valve body I2, and the other end is pressed on the other end of adjusting sleeve 5, by adjusting sleeve 5 by spring-force driven dual on principal pressure spool 2; One valve pocket 6 is enclosed within the little cylindrical of principal pressure spool 2, and valve pocket 6 can slide in valve body I2, two end faces respectively with the end joined of cover plate 1 and principal pressure spool 2.Principal pressure spool 2 there is spool aperture X be communicated with effect oil pocket PZ by principal pressure 1 oil pocket PP.
Described valve body I2 has seven lumen pores, be respectively used to proportion of installation reduction valve I3, the seal arrangement of each lumen pore passing ratio reduction valve I3 is divided into again oil pocket (A1, A2, A3, A4, A5, A6, A close) and proportional pressure-reducing valve oil back chamber (T1, T2, T3, T4, T5, T6, T close) three oil pockets after proportional pressure-reducing valve pressure oil cavity (P1, P2, P3, P4, P5, P6, P close), proportional pressure-reducing valve decompression, and is communicated with T mouth with the P mouth of proportional pressure-reducing valve I3, A mouth respectively.Seven described proportional pressure-reducing valve I3 and main pressure valve I1 are arranged in parallel, and left and right is distributed in valve body I2 both sides, and principal pressure spool 2 side has 3, and opposite side has 4.
Described valve body I2 has pressure oil circuit Y1, the principal pressure one oil pocket PP of main pressure valve I1 is communicated with the proportional pressure-reducing valve pressure oil cavity (P1, P2, P3, P4, P5, P6, P close) of seven proportional pressure-reducing valve I3; Have oil return circuit Y2, main pressure valve I1 oil back chamber TT is communicated with the proportional pressure-reducing valve oil back chamber (T1, T2, T3, T4, T5, T6, T close) of seven proportional pressure-reducing valve I3.
Described upper clapboard II is arranged between main valve body I and oil transportation plate III, for separating the oil circuit of main valve body I and oil transportation plate III.
Described lower clapboard IV is arranged between oil transportation plate III and control valve attachment face, for separating the oil circuit of oil transportation plate III and control valve attachment face.
Oil pocket (A1 after the decompression of described proportional pressure-reducing valve I3, A2, A3, A4, A5, A6) by the first clutch pressure oil circuit SY1 on upper clapboard II and oil transportation plate III, second clutch pressure oil circuit SY2, 3rd clutch pressure oil circuit SY3, four clutches pressure oil circuit SY4, 5th clutch pressure oil circuit SY5, 6th clutch pressure oil circuit SY6 respectively with first clutch oil pocket L1, second clutch oil pocket L2, 3rd clutch oil pocket L3, four clutches oil pocket L4, 5th clutch oil pocket L5, 6th clutch oil pocket L6 is communicated with.After the decompression of proportional pressure-reducing valve I3, oil pocket A to close on valve body I1 directly to close with lockup clutch oil pocket L and is communicated with.
Working principle of the present utility model is: pressure fuel pump oil enters into the principal pressure two oil pocket SPP of oil transportation plate III by lower clapboard IV, the principal pressure one oil pocket PP of main valve body I is entered into again through upper clapboard II, pressure oil enters into effect oil pocket PZ by spool aperture X, when pressure oil pressure is greater than the active force of spool big spring 3 and spool little spring 4, principal pressure spool 2 moves to the left, opens the oil circuit of torque-converters one oil pocket PW.Fluid enters into the torque-converters two oil pocket SPW1 of oil transportation plate III from torque-converters one oil pocket PW by upper clapboard II, transition oil pocket SG is entered into by the first torque-converters oil circuit SY7, be communicated with torque-converters three oil pocket SPW2 again, last and torque-converters inlet communication, torque converter pressure oil pocket SC is communicated with for measuring torque converter pressure with torque-converters three oil pocket SPW2.Meanwhile principal pressure one oil pocket PP pressure oil enters into the proportional pressure-reducing valve pressure oil cavity (P1, P2, P3, P4, P5, P6, P close) of seven proportional pressure-reducing valve I3 through pressure oil duct Y1, now foundation clutch gear demand is to proportional pressure-reducing valve current signal, and corresponding clutch will obtain pressure oil and required boosting curve.Such as gear needs first clutch and four clutches to engage at present, to obtaining current signal by the two proportional pressure-reducing valve I3 overlapping clutches, post-decompression pressure oil enters into first clutch pressure oil circuit SY1 oil transportation plate III and four clutches pressure oil circuit SY4 by upper clapboard II respectively from oil pocket (A1, A4) after proportional pressure-reducing valve decompression, be communicated with four clutches oil pocket L4 with first clutch oil pocket L1 again, finally be applied on corresponding clutch, realize required gear.When first clutch and four clutches are thrown off, the fluid of clutch inside gets back to first clutch oil pocket L1 and four clutches oil pocket L4, the rear oil pocket (A1, A4) of proportional pressure-reducing valve decompression is got back to again by first clutch pressure oil circuit SY1, four clutches pressure oil circuit SY4 and upper clapboard II, get back to proportional pressure-reducing valve oil back chamber (T1, T4) from corresponding proportional pressure-reducing valve I3, enter into oil return circuit Y2.All oil return fluid in main valve body I all converge to oil return circuit Y2, then enter into the first oil back chamber ST1 and the second oil back chamber ST2 by upper clapboard II, final oil sump tank.
Claims (3)
1. engineering machinery automatic transmission case electric-hydraulic proportion control valve, it stacks together from top to bottom primarily of main valve body (I), upper clapboard (II), oil transportation plate (III) and lower clapboard (IV); Described main valve body (I) comprises main pressure valve (I1), proportional pressure-reducing valve (I3) and valve body (I2); It is characterized in that:
Be inserted with in described valve body (I2) can slide in valve body (I2) principal pressure spool (2), described principal pressure spool (2) is encapsulated in valve body (I2) with cover plate (1); One spool big spring (3) one end is pressed on valve body (I2), and the other end is pressed on principal pressure spool (2) large end face; One is arranged on the adjusting sleeve (5) in principal pressure spool (2), and one end engages with the small end face of principal pressure spool (2); One spool little spring (4) one end be nested in spool big spring (3) is pressed on valve body (I2), and the other end is pressed on the other end of adjusting sleeve (5), by adjusting sleeve (5) by spring-force driven dual on principal pressure spool (2); One valve pocket (6) is enclosed within the little cylindrical of principal pressure spool (2), and valve pocket (6) can slide in valve body (I2), two end faces respectively with the end joined of cover plate (1) and principal pressure spool (2); Principal pressure spool (2) there is spool aperture (X) be communicated with effect oil pocket (PZ) by principal pressure oil pocket (PP).
2. engineering machinery automatic transmission case electric-hydraulic proportion control valve according to claim 1, it is characterized in that described valve body (I2) has seven lumen pores, be respectively used to proportion of installation reduction valve (I3), the seal arrangement of each lumen pore passing ratio reduction valve (I3) is divided into again proportional pressure-reducing valve pressure oil cavity (P1, P2, P3, P4, P5, P6, P closes), oil pocket (A1 after proportional pressure-reducing valve decompression, A2, A3, A4, A5, A6, A closes) and proportional pressure-reducing valve oil back chamber (T1, T2, T3, T4, T5, T6, T closes) three oil pockets, and respectively with the P mouth of proportional pressure-reducing valve (I3), A mouth is communicated with T mouth, seven described proportional pressure-reducing valves (I3) and main pressure valve (I1) are arranged in parallel, and left and right is distributed in valve body (I2) both sides, and wherein principal pressure spool both sides have 3, and opposite side has 4,
Described upper clapboard (II) is arranged between main valve body I and oil transportation plate (III), for separating the oil circuit of main valve body I and oil transportation plate III;
Described lower clapboard (IV) is arranged between oil transportation plate (III) and control valve attachment face, for separating the oil circuit of oil transportation plate (III) and control valve attachment face.
3. engineering machinery automatic transmission case electric-hydraulic proportion control valve according to claim 2, it is characterized in that described valve body (I2) has pressure oil circuit (Y1), principal pressure one oil pocket (PP) of main pressure valve (I1) is communicated with the proportional pressure-reducing valve pressure oil cavity (P1, P2, P3, P4, P5, P6, P close) of seven proportional pressure-reducing valves (I3); Have oil return circuit (Y2), main pressure valve (I1) oil back chamber (TT) is communicated with the proportional pressure-reducing valve oil back chamber (T1, T2, T3, T4, T5, T6, T close) of seven proportional pressure-reducing valves (I3);
Oil pocket (A1 after the decompression of described proportional pressure-reducing valve I3, A2, A3, A4, A5, A6) by the first clutch pressure oil circuit (SY1) on upper clapboard (II) and oil transportation plate (III), second clutch pressure oil circuit (SY2), 3rd clutch pressure oil circuit (SY3), four clutches pressure oil circuit (SY4), 5th clutch pressure oil circuit (SY5), 6th clutch pressure oil circuit (SY6) respectively with first clutch oil pocket (L1), second clutch oil pocket (L2), 3rd clutch oil pocket (L3), four clutches oil pocket (L4), 5th clutch oil pocket (L5), 6th clutch oil pocket (L6) is communicated with, after the decompression of proportional pressure-reducing valve (I3), oil pocket (A) closes and is communicated with upper directly the closing with lockup clutch oil pocket (L) of valve body (I1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520810418.9U CN205173453U (en) | 2015-10-20 | 2015-10-20 | Engineering machinery is electro -hydraulic proportional operating valve for automatic transmission |
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| CN201520810418.9U CN205173453U (en) | 2015-10-20 | 2015-10-20 | Engineering machinery is electro -hydraulic proportional operating valve for automatic transmission |
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| CN205173453U true CN205173453U (en) | 2016-04-20 |
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| CN201520810418.9U Active CN205173453U (en) | 2015-10-20 | 2015-10-20 | Engineering machinery is electro -hydraulic proportional operating valve for automatic transmission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333132A (en) * | 2015-10-20 | 2016-02-17 | 杭州前进齿轮箱集团股份有限公司 | Electro-hydraulic proportional operating valve for automatic gearbox of engineering machine |
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2015
- 2015-10-20 CN CN201520810418.9U patent/CN205173453U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105333132A (en) * | 2015-10-20 | 2016-02-17 | 杭州前进齿轮箱集团股份有限公司 | Electro-hydraulic proportional operating valve for automatic gearbox of engineering machine |
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