CN203189801U - Electro-hydraulic shift control valve for loader speed changer - Google Patents

Electro-hydraulic shift control valve for loader speed changer Download PDF

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Publication number
CN203189801U
CN203189801U CN 201220625407 CN201220625407U CN203189801U CN 203189801 U CN203189801 U CN 203189801U CN 201220625407 CN201220625407 CN 201220625407 CN 201220625407 U CN201220625407 U CN 201220625407U CN 203189801 U CN203189801 U CN 203189801U
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China
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valve
speed changer
valve body
opening
oil
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CN 201220625407
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Chinese (zh)
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刘景鹏
崔国敏
周立鹏
乔征
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Tianjin Engineering Machinery Institute
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Tianjin Engineering Machinery Institute
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Abstract

The utility model relates to an electro-hydraulic shift control valve for a loader speed changer, which belongs to the technical field of hydro-mechanical transmission. The loader speed changer is characterized in that the electro-hydraulic shift control valve comprises a valve body, a valve plate, five two-phase and four-way reversing valves, and five solenoid valves; five two-phase and four-way reversing valves are disposed in the valve body; the bottom face of the valve body is provided with an oil inlet and an oil return opening, which are communicated with the five two-phase and four-way reversing valves; the five solenoid valves are disposed on the side face of the valve body, and control the commutation of each reversing valve through an oil way; a pressure regulator valve and an accumulator are disposed at the valve body oil inlet and the oil return opening; the side face of the valve plate is provided with an oil mouth communicated with an oil outlet of the two-phase and four-way reversing valve. The electro-hydraulic shift control valve for a loader speed changer is advantageous in that the structure is simple, assembling is compact, application range is wide, and use is safe and reliable; gearshift of the speed changer is flexible realized, and fatigue sense of a driver is greatly reduced; operation is simple and work efficiency is improved.

Description

A kind of loader speed changer electricity liquid gearshift control valve
Technical field
The utility model belongs to hydraulic machine drive technology field, particularly relates to a kind of loader speed changer electricity liquid gearshift control valve.
Background technique
At present, produce the loader shift of transmission mode of using and adopt manual shift more, the manual shift control valve mainly comprises shut off valve, shift valve, pressure regulator valve and valve body etc.Shut off valve comprises cut-out valve rod, spring etc.Each control valve is installed in the valve body, adopts the hand-hydraulic gearshift during gearshift, therefore makes the control valve complex structure, control is inconvenient, and gear is few, can not adapt to the requirement of many gears shift of transmission, exist operation dumb, working strength is big, influences technical problems such as manufacturing efficiency.
Summary of the invention
The utility model provides a kind of loader speed changer electricity liquid gearshift control valve for solving the technical problem that exists in the known technology.
The purpose of this utility model provides and a kind ofly the utlity model has simple in structurely, and assembling is compact, and applied widely, safety and stability realizes the gearshift of speed changer flexibly, has alleviated driver's fatigue strength greatly; Also has loader speed changer electricity liquid gearshift control valve easy and simple to handle, as characteristics such as to increase work efficiency.
The technological scheme that the utility model loader speed changer electricity liquid gearshift control valve is taked is:
A kind of loader speed changer, be characterized in: electric liquid gearshift control valve comprises valve body, valve plate, 5 two-position four way change valves, 5 solenoid valves, be provided with 5 two-position four way change valves in the valve body, there is filler opening and the return opening that is connected with 5 two-position four way change valve oil circuits the valve body bottom surface, 5 solenoid valves are installed in the valve body side and control each selector valve commutation by oil circuit respectively; Valve body filler opening and return opening place are provided with pressure regulator valve and accumulator, and there is the hydraulic fluid port with the output oil port UNICOM of two-position four way change valve the valve plate side.The utility model loader speed changer electricity liquid gearshift control valve can also adopt following technological scheme:
Described loader speed changer electricity liquid gearshift control valve, be characterized in: valve plate is installed in the valve body bottom surface, the valve plate side have 6 hydraulic fluid ports respectively with the output oil port UNICOM of two-position four way change valve.
Described loader speed changer electricity liquid gearshift control valve, be characterized in: two-position four way change valve is made of valve opening and changeover valve core, the valve opening inner cylindrical surface is shaped on annular filler opening, return opening, output oil port and meta hydraulic fluid port, the external cylindrical surface correspondence of changeover valve core is shaped on the communicating groove of three control output oil ports, one end of changeover valve core is shaped on center hole, return spring is installed in the center hole, and an end of return spring is equipped with guide rod.
Described loader speed changer electricity liquid gearshift control valve, be characterized in: pressure regulator valve and accumulator make valve opening in valve body, the adjusting pressuring valve core that will have circular groove is installed in the valve opening, and adjusting pressuring valve core one end is equipped with pressure adjusting spring, energy-storaging spring and energy storage piston.
Advantage and the good effect that the utlity model has are:
Loader speed changer electricity liquid gearshift control valve is owing to adopted the utility model brand-new technology scheme, compared with prior art, the utility model self shifter electro-hydraulic control valve, five solenoid valves are two position three-way valve, control the selector valve of five two-position four-ways respectively, in speed changer, be equipped with one group by the gear of six fluid clutch control transmissions, control the different clutch states of each clutch by six output oil ports of this valve, realize the gearshift of speed changer, alleviated driver's fatigue strength greatly; The utility model also has advantage easy and simple to handle, that increase work efficiency in addition.
Description of drawings
Fig. 1 is loader speed changer electricity liquid gearshift control valve structural representation;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the oil circuit figure of valve body;
Fig. 4 is the oil circuit figure of valve plate;
Fig. 5 is loader speed changer electricity liquid gearshift control valve hydraulic diagram.
Among the figure, 1, valve body; 2, valve plate; 3, valve gap; 4, solenoid valve; 5, wire terminal; 6, adjusting pressuring valve core; 7, pressure adjusting spring; 8, energy-storaging spring; 9, energy storage piston; 10, changeover valve core; 11, return spring; 12, guide rod; 13, pressure regulator valve; 14, solenoid valve fuel feeding reduction valve.
Embodiment
For further understanding model utility content of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
Consult accompanying drawing 1 to Fig. 5.
Embodiment 1
A kind of loader speed changer electricity liquid gearshift control valve, comprise valve body 1, valve plate 2,5 two-position four way change valves, 5 electromagnetism 4, be provided with 5 two-position four way change valves in the valve body, there is filler opening and the return opening that is connected with 5 two-position four way change valve oil circuits valve body 1 bottom surface, 5 solenoid valves are installed in the valve body side and control each selector valve commutation by oil circuit respectively; Valve body filler opening and return opening place are provided with pressure regulator valve and accumulator, and there is the hydraulic fluid port with the output oil port UNICOM of two-position four way change valve the valve plate side.Valve plate is installed in the valve body bottom surface, the valve plate side have 6 hydraulic fluid ports respectively with the output oil port UNICOM of two-position four way change valve.
Two-position four way change valve is made of valve opening and changeover valve core 10, the valve opening inner cylindrical surface is shaped on annular filler opening, return opening, output oil port and meta hydraulic fluid port, the external cylindrical surface correspondence of changeover valve core 10 is shaped on the communicating groove of three control output oil ports, one end of changeover valve core 10 is shaped on center hole, return spring 11 is installed in the center hole, and an end of return spring 11 is equipped with guide rod 12.Pressure regulator valve and accumulator make valve opening in valve body, the adjusting pressuring valve core that will have circular groove is installed in the valve opening, and adjusting pressuring valve core one end is equipped with pressure adjusting spring 7, energy-storaging spring 8 and energy storage piston 9.
The concrete structure of present embodiment and gearshift procedure:
See also Fig. 1, Fig. 2, Fig. 3.Five two-position four way change valves are installed in valve body 1, are provided with filler opening and the oil outlet that is communicated with each selector valve oil circuit in the valve body bottom surface, filler opening is connected with oil pump, and return opening is connected with fuel tank.In the valve body side five two-position three way magnetic valves 4 and wire terminal 5 thereof are installed, the valve body side also is equipped with valve gap 3.Two-position four way change valve is made of valve opening and changeover valve core 10, the valve opening inner cylindrical surface is shaped on annular oil inlet P, return opening O, output oil port (C1, CR, C4, CF, C3, C2) and meta hydraulic fluid port N, the external cylindrical surface of changeover valve core is shaped on the groove of control output oil port, one end of changeover valve core is shaped on center hole, return spring 11 is installed in the center hole, and an end of return spring is installed guide rod 12.N, P mouth communicate during the changeover valve core meta, and C1, CR, C4, CF, C3, C2 communicate with the return opening of each selector valve respectively; When solenoid valve was worked, the spool of selector valve was mobile under the pressure oil effect, and filler opening communicated with output oil port and entered clutch this moment, and its combination under the pressure oil effect realizes gearshift.The valve body bottom surface is equipped with valve plate 2, and as shown in Figure 4, the valve plate side is provided with six hydraulic fluid ports that are communicated with the output oil port (C1, CR, C4, CF, C3, C2) of each selector valve respectively, and each hydraulic fluid port can communicate with the pressure hydraulic fluid port that respectively keeps off clutch of speed changer respectively.Filler opening and return opening place at valve body are provided with pressure regulator valve and accumulator, and adjusting pressuring valve core 6 is installed in the valve opening of valve body, and adjusting pressuring valve core one end is equipped with pressure adjusting spring 7, energy-storaging spring 8 and energy storage piston 9.Control the different clutch states of each hydraulic coupling by the utility model, realize the gearshift of speed changer, alleviate driver's fatigue strength greatly; The utility model also has advantage easy and simple to handle, that increase work efficiency in addition.
The gearshift principle of present embodiment:
See also as Fig. 5.
Gear advances: solenoid valve SF, S1 connect, CF, the oil-feed of C1 mouth, and forward gear clutch and a retaining clutch combination are in a retaining state; Solenoid valve SF, S2 connect, CF, the oil-feed of C2 mouth, and forward gear clutch and two retaining clutch combinations are in two retaining states; Solenoid valve SF connects, CF, the oil-feed of C3 mouth, and forward gear clutch and three retaining clutch combinations are in three retaining states; Solenoid valve S4 connects, C3, the oil-feed of C4 mouth, and three retaining clutches and four retaining clutch combinations are in four retaining states.
Gear falls back: solenoid valve SR, S1 connect, CR, the oil-feed of C1 mouth, and fall back retaining clutch and a retaining clutch combination are in a retaining state; Solenoid valve SR, S2 connect, CR, the oil-feed of C2 mouth, and fall back retaining clutch and two retaining clutch combinations are in two retaining states; Solenoid valve SR connects, CR, the oil-feed of C3 mouth, and fall back retaining clutch and three retaining clutch combinations are in three retaining states.

Claims (4)

1. loader speed changer electricity liquid gearshift control valve, it is characterized in that: electric liquid gearshift control valve comprises valve body, valve plate, 5 two-position four way change valves, 5 solenoid valves, be provided with 5 two-position four way change valves in the valve body, there is filler opening and the return opening that is connected with 5 two-position four way change valve oil circuits the valve body bottom surface, 5 solenoid valves are installed in the valve body side and control each selector valve commutation by oil circuit respectively; Valve body filler opening and return opening place are provided with pressure regulator valve and accumulator, and there is the hydraulic fluid port with the output oil port UNICOM of two-position four way change valve the valve plate side.
2. loader speed changer according to claim 1 electricity liquid gearshift control valve, it is characterized in that: valve plate is installed in the valve body bottom surface, the valve plate side have 6 hydraulic fluid ports respectively with the output oil port UNICOM of two-position four way change valve.
3. loader speed changer according to claim 1 and 2 electricity liquid gearshift control valve, it is characterized in that: two-position four way change valve is made of valve opening and changeover valve core, the valve opening inner cylindrical surface is shaped on annular filler opening, return opening, output oil port and meta hydraulic fluid port, the external cylindrical surface correspondence of changeover valve core is shaped on the communicating groove of three control output oil ports, one end of changeover valve core is shaped on center hole, return spring is installed in the center hole, and an end of return spring is equipped with guide rod.
4. loader speed changer according to claim 1 and 2 electricity liquid gearshift control valve, it is characterized in that: pressure regulator valve and accumulator make valve opening in valve body, the adjusting pressuring valve core that will have circular groove is installed in the valve opening, and adjusting pressuring valve core one end is equipped with pressure adjusting spring, energy-storaging spring and energy storage piston.
CN 201220625407 2012-11-23 2012-11-23 Electro-hydraulic shift control valve for loader speed changer Active CN203189801U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220625407 CN203189801U (en) 2012-11-23 2012-11-23 Electro-hydraulic shift control valve for loader speed changer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220625407 CN203189801U (en) 2012-11-23 2012-11-23 Electro-hydraulic shift control valve for loader speed changer

Publications (1)

Publication Number Publication Date
CN203189801U true CN203189801U (en) 2013-09-11

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Application Number Title Priority Date Filing Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134677A (en) * 2015-01-27 2015-12-09 四川大学 Fast hydraulic gear shifting system
CN108679217A (en) * 2018-06-26 2018-10-19 山东临工工程机械有限公司 Loader-digger gearbox electric-control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105134677A (en) * 2015-01-27 2015-12-09 四川大学 Fast hydraulic gear shifting system
CN108679217A (en) * 2018-06-26 2018-10-19 山东临工工程机械有限公司 Loader-digger gearbox electric-control system

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