CN104712751B - Tractor electrichydraulic control gearshift - Google Patents
Tractor electrichydraulic control gearshift Download PDFInfo
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- CN104712751B CN104712751B CN201510135471.8A CN201510135471A CN104712751B CN 104712751 B CN104712751 B CN 104712751B CN 201510135471 A CN201510135471 A CN 201510135471A CN 104712751 B CN104712751 B CN 104712751B
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- piston
- piston rod
- ring
- rocking arm
- gear
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0262—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
- F16H61/0265—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic for gearshift control, e.g. control functions for performing shifting or generation of shift signals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0262—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
- F16H61/0265—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic for gearshift control, e.g. control functions for performing shifting or generation of shift signals
- F16H61/0267—Layout of hydraulic control circuits, e.g. arrangement of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0262—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
- F16H61/0265—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic for gearshift control, e.g. control functions for performing shifting or generation of shift signals
- F16H61/0267—Layout of hydraulic control circuits, e.g. arrangement of valves
- F16H61/0269—Layout of hydraulic control circuits, e.g. arrangement of valves characterised by low integration or small number of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
Tractor electrichydraulic control gearshift, including：Piston shell, rocker arm shaft, banking pin, rocking arm back-up ring, rocking arm, shaft end blocking, tailpiece of the piston rod back-up ring, piston, spacing back-up ring, return spring, spring stop, piston rod, shifting block；The transverse holes both sides of piston shell are symmetrically installed shaft end blocking, center section and from left to right install tailpiece of the piston rod back-up ring, piston rod, piston, spacing back-up ring, spring stop, return spring, spring stop successively；Wherein on the piston rod, tailpiece of the piston rod back-up ring is arranged in the neck of piston rod, and spacing back-up ring is assemblied in the transverse holes of piston shell for piston, spring stop, return spring socket；On the piston rod, output end is embedded on shifting block for the power intake insertion of rocking arm.Rocking arm is symmetrically sleeved on rocker arm shaft, and rocking arm back-up ring is installed in both sides；Rocker arm shaft is fixed in the upright opening of piston shell by banking pin.Piston shell outer surface is provided with I gear, II gear, III, IV gear magnetic valve.
Description
Technical field
The invention belongs to tractor field, it is related to a kind of tractor shifting mechanism, more particularly to a kind of dilatory mechanical electronic hydraulic control
Gearshift processed.
Background technology
At present, passed through more than domestic large power wheel tractor gearbox using mechanical changeover modes such as engaging sleeve, synchronizers
Flexible axle or lever etc. manipulate shift fork and realize gear shift operation.The control crank stroke of this kind of gearshift is larger, in driver's cabin
Portion takes larger working space, the other part arrangements of influence cabin interior；And mechanism element arrangement is scattered, the cloth in complete machine
Put and fix and be relatively difficult.In addition, flexible axle or lever control Traffic control system are inconvenient, operating efficiency is relatively low, manipulates heavy
Arduously, driving fatigue is easily caused.It is not enough in order to make up this, it is necessary to develop a kind of compact conformation, push-button control uses peace
Complete reliable, occupancy working space is small, arranges convenient tractor shifting mechanism, utilizes automatically controlled, mechanical, hydraulic technique Comprehensive Control
Tractor is shifted gears, to meet the use requirement of modern tractor.
The content of the invention
It is an object of the invention to provide high, the reliable and practical tractor of a kind of compact conformation, easy to operate, operating efficiency
Electrichydraulic control gearshift.
The technical scheme is that：Tractor electrichydraulic control gearshift, including：Piston shell, screw, bushing, lid
Plate, alignment pin, sensor bolt, sensor, the first bolt, positioning sleeve, rocker arm shaft, banking pin, rocking arm back-up ring, rocking arm, shaft end
Blocking, locking nail, locking plate, tailpiece of the piston rod back-up ring, piston, spacing back-up ring, return spring, spring stop, piston rod, the second spiral shell
Bolt, shifting block, I gear magnetic valve, II gear magnetic valve, III gear magnetic valve, IV gear magnetic valve, the first oil inlet, the second oil inlet；
The transverse holes both sides of piston shell are symmetrically installed shaft end blocking, center section and from left to right install tailpiece of the piston rod successively
Back-up ring, piston rod, piston, spacing back-up ring, spring stop, return spring, spring stop；Wherein piston, spring stop, return bullet
Spring is socketed on the piston rod, and tailpiece of the piston rod back-up ring is arranged in the neck of piston rod, and spacing back-up ring is assemblied in the horizontal stroke of piston shell
Xiang Kongzhong；On the piston rod, output end is embedded on shifting block for the power intake insertion of rocking arm.
Rocking arm is symmetrically sleeved on rocker arm shaft, and rocking arm back-up ring is installed in both sides；Rocker arm shaft is fixed on piston by banking pin
In the upright opening of housing.
It is provided with the lateral surface of piston shell by alignment pin, sensor bolt on cover plate, cover plate and is welded with bushing, spiral shell
Nail is arranged on bush inside, while be inserted into the axial neck of piston rod,
Installation locking nail, locking plate on the lateral surface of piston shell, wherein locking plate are locked to be blocked in shaft end.
The rocking arm shaft centre line that is installed in piston shell inner vertical hole and it is installed in piston shell outside vertical hole
Center sensor line be located at same fore-and-aft plane in.
It is installed on I gear magnetic valve, III gear magnetic valve and the first oil inlet of same side on the left of piston shell outer surface
Communicate；It is installed on II gear magnetic valve, IV gear magnetic valve and the second oil inlet phase of same side on the right side of piston shell outer surface
It is logical, it is connected by pipeline with hydraulic pump.
The present invention can reach following good effect after using above-mentioned technical proposal：Tractor electrichydraulic control gearshift passes through
Hydraulic pump provides pressure oil, and logical oil, the oil-break of solenoid valve control closing working chamber realize the reciprocating motion of piston and piston rod,
Promote rocking arm to realize around rocker arm shaft to horizontally rotate, power is transferred on shifting block by the output end of rocking arm, realize shifting block, slide bar,
Shift fork it is servo-actuated, so as to realize the mounting and separation of mechanical gear.The tractor electrichydraulic control gearshift, is grasped using button
Vertical, solenoid valve control, hydraulic-driven, drive path are clear, and compact conformation is easy to operate, reliable and practical, can be used as independent mould
Block is used to manipulate four gear mechanical changeover gearboxes.
Brief description of the drawings
Fig. 1 is the main structure diagram of tractor electrichydraulic control gearshift of the present invention.
Fig. 2 is the left view structural representation of tractor electrichydraulic control gearshift of the present invention.
Fig. 3 is the overlooking the structure diagram of tractor electrichydraulic control gearshift of the present invention.
Fig. 4 is the right side structural representation of tractor electrichydraulic control gearshift of the present invention.
Fig. 5 is Fig. 1 B-B cross-sectional views.
Fig. 6 is Fig. 2 A-A cross-sectional views.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings.As shown in figs. 1 to 6：Tractor electrichydraulic control gearshift machine
Structure, positioned at gearbox body side, mainly includes：Piston shell 1, screw 2, bushing 3, cover plate 4, alignment pin 5, sensor bolt 6,
Sensor 7, the first bolt 8, positioning sleeve 9, rocker arm shaft 10, banking pin 11, rocking arm back-up ring 12, rocking arm 13, shaft end block 14, locking
Nail 15, locking plate 16, tailpiece of the piston rod back-up ring 17, piston 18, spacing back-up ring 19, return spring 20, spring stop 21, piston rod 22,
Second bolt 23, the gear magnetic valve of shifting block 24, I E, II gear magnetic valve F, III gear magnetic valve G, IV gear magnetic valve H, the first oil inlet
P1, the second oil inlet P 2, slide bar, shift fork, hydraulic pump, pipeline, blocking, sealing ring etc. are constituted.Wherein slide bar, shift fork, hydraulic pump,
The conventional hardwares such as pipeline, blocking, sealing ring are not done in figure to be illustrated.
Tractor electrichydraulic control gearshift is fixed on gearbox by positioning sleeve 9, the first bolt 8, the second bolt 23
Sideways, it can also be chosen to install as independent module.
The first oil inlet P 1, the second oil inlet P 2 are located at the both sides of piston shell 1 in tractor electrichydraulic control gearshift
Face, is connected by pipeline with hydraulic pump, and hydraulic pump is by the first oil inlet P 1 or the second oil inlet P 2 to tractor electrichydraulic control
Gearshift provides pressure oil.
The transverse holes of piston shell 1, it is from left to right piston rod terminal block successively that both sides, which install shaft end and block 14, center section,
Circle 17, piston rod 22, piston 18, spacing back-up ring 19, spring stop 21, return spring 20, spring stop 21, wherein piston 18,
Spring stop 21, return spring 20 is sleeved on piston rod 22, and tailpiece of the piston rod back-up ring 17 is assemblied in the neck of piston rod 22, living
Plug 18 side carried out by tailpiece of the piston rod back-up ring 17 it is spacing, opposite side using piston rod 22 the shaft shoulder it is spacing, make the He of piston 18
Piston rod 22 is integrally formed, and motion state is consistent.
Pressure oil passes through control unit, by the first oil inlet P 1 or the second oil inlet P 2, is reached by solenoid valve control
Shaft end is blocked in the closed working chambers of formation such as 14, piston 18, piston rod 22 and sealing ring, promotes piston 18 and piston rod 22 to exist
Moved back and forth in the transverse holes of piston shell 1.
Spacing back-up ring 19 is assemblied in the transverse holes of piston shell 1, and both reciprocating motions to piston 18 and piston rod 22 rise
To position-limiting action, it can also play a part of limiting the stroke of return spring 20.
On the power intake insertion piston rod 22 of rocking arm 13, on output end insertion shifting block 24, the middle borehole jack of rocking arm 13
It is connected on rocker arm shaft 10, rocking arm back-up ring 12, position of the limitation rocking arm 13 on rocker arm shaft 10 are installed in both sides.Piston rod 22 is used as and shaken
The power intake of arm 13, is moved back and forth in the transverse holes of piston shell 1, promotes rocking arm 13 to realize level around rocker arm shaft 10
Power is transferred to shifting block 24 by rotation, the output end of rocking arm 13.
Rocker arm shaft 10 is fixed on by banking pin 11 in the upright opening of piston shell 1, prevents rocker arm shaft 10 from translating
And rotary motion.The fitted seal circle of piston shell 1 is sealed to rocker arm shaft 10, prevents gearbox fluid from passing through the He of rocker arm shaft 10
The fit clearance leakage of piston shell 1.
Bushing 3 is welded on cover plate 4, and the outer surface of piston shell 1 is fixed on by alignment pin 5, sensor bolt 6
On.Screw 2 is arranged on inside bushing 3, while being inserted into the axial neck of piston rod 22, can realize the circumference side of piston rod 22
To positioning and piston rod range it is bidirectionally limited.
Locking nail 15, locking plate 16 are arranged on the side of piston shell 1, and wherein locking plate 16 is locked blocks on 14 in shaft end, lock
Marking closely 15 is used to fix locking plate 16, prevents shaft end from blocking 14 and loosening.
The center line of sensor 7 and the center line of rocker arm shaft 10 are located in same fore-and-aft plane, and sensor 7 passes through sensor bolt
6 are installed in the outside vertical hole of piston shell 1, the displacement signal of piston rod 22 can be fed back into control unit, to check
Whether the working condition of piston rod 22 is normal.
I gear magnetic valve E, III gear magnetic valve G are installed on the left side of the outer surface of piston shell 1, are communicated with the first oil inlet P 1；
II gear magnetic valve F, IV gear magnetic valve H are installed on the right side of the outer surface of piston shell 1, are communicated with the second oil inlet P 2.
Tractor electrichydraulic control gearshift mainly blocks 14 comprising two piston rods 22, two pistons 18, four shaft ends
Deng formation Liang Zu piston movements mechanism, the working chambers of four closings of composition：First working chamber A, the second working chamber B, the 3rd work
Chamber C, the 4th working chamber D.Wherein I gear magnetic valve E the first working chambers of correspondence A, II gear magnetic valve F the second working chamber of correspondence B, III gear
Magnetic valve G correspondences the 3rd working chamber C, IV the 4th working chamber D of gear magnetic valve H correspondences.First working chamber A and the second working chamber B is total to
With a set of piston 18 and piston rod 22, the 3rd working chamber C and the 4th working chamber D share another set of piston 18 and piston rod 22；The
One working chamber A and the 3rd working chamber C shares the first oil inlet P 1, and the second working chamber B and the 4th working chamber D share the second oil inlet
P2.Namely four magnetic valves control logical oil, the oil-break of four working chambers respectively, realize that piston 18 and piston rod 22 are moved back and forth.
Tractor electrichydraulic control gearshift also mainly comprising two shifting blocks, two slide bars, two shift forks etc., forms two groups
Gear shifting actuating mechanism, every group of gear shifting actuating mechanism includes shifting block, shift fork, a slide bar, wherein shifting block, shift fork, point
It is not fixed on slide bar, the motion state of three is consistent.Every group of gear shifting actuating mechanism can control two mechanical gears
Mounting and separation.Namely Liang Zu piston movements mechanism corresponds to two groups of gear shifting actuating mechanisms respectively, I gear and II gear, III can be controlled
The mounting and separation of gear and IV gear, wherein I gear and II gear share a sensor 7, III gear and IV gear share another sensor
7。
The tractor electrichydraulic control gearshift, drives piston movement mechanism by hydraulic system, realizes piston rod 22
Move back and forth, the input of rocking arm 13 insertion piston rod 22 makes rocking arm 13 follow piston movement mechanism to link.And rocking arm 13 is defeated
Go out in the embedded shifting block 24 in end, drive shifting block 24, realize shifting block 24, slide bar, shift fork it is servo-actuated, so as to realize four mechanical gears
Mounting and separation, specific pipeline are as follows：
I gear mounting：The oil-feed of first oil inlet P 1, I gear magnetic valve E is powered, and hydraulic oil enters the first working chamber A, promotes and lives
Plug 18 and piston rod 22 move right, while compression retracteding position spring 20, rocking arm 13 is close to one end of piston rod 22, in piston rod 22
Drive under, also move right, and rocking arm 13 realizes rotary motion around rocker arm shaft 10 so that the other end of rocking arm 13, drive
Shifting block 24, slide bar and shift fork, are realized to left movement, so as to realize the mounting of I gear.
I gear separation：The oil-feed of first oil inlet P 1, I gear magnetic valve E power-off, the oil-feed oil circuit to the first working chamber A is cut off,
And oil return box, the first working chamber A oil pressure is reduced rapidly, in the presence of return spring 20, promotes piston 18 and piston rod 22
Be moved to the left, rocking arm 13 under the drive of piston rod 22, is also moved to the left close to one end of piston rod 22, and rocking arm 13 around
Rocker arm shaft 10 realizes rotary motion so that the other end of rocking arm 13, drives shifting block 24, slide bar and shift fork, and realization is moved right, most
Afterwards until return spring 20 returns to initial makeup location, so as to realize the separation of I gear.
II gear mounting：The oil-feed of second oil inlet P 2, II gear magnetic valve F is powered, and hydraulic oil enters the second working chamber B, promotes
Piston 18 and piston rod 22 are moved to the left, while compression retracteding position spring 20, rocking arm 13 is close to one end of piston rod 22, in piston rod
Under 22 drive, also it is moved to the left, and rocking arm 13 realizes rotary motion around rocker arm shaft 10 so that the other end of rocking arm 13, band
Dynamic shifting block 24, slide bar and shift fork, realization is moved right, so as to realize the mounting of II gear.
II gear separation：The oil-feed of second oil inlet P 2, II gear magnetic valve F power-off, the oil-feed oil circuit to the second working chamber B is cut
It is disconnected, and oil return box, the second working chamber B oil pressure is reduced rapidly, in the presence of return spring 20, promotes piston 18 and piston rod
22 move right, and rocking arm 13 under the drive of piston rod 22, also moves right close to one end of piston rod 22, and rocking arm 13 around
Rocker arm shaft 10 and realize rotary motion so that the other end of rocking arm 13, drive shifting block 24, slide bar and shift fork, realize to left movement,
Finally until return spring 20 returns to initial makeup location, so as to realize the separation of II gear.
III gear mounting：The oil-feed of first oil inlet P 1, III gear magnetic valve G is powered, and hydraulic oil enters the 3rd working chamber C, promotes
Piston 18 and piston rod 22 move right, while compression retracteding position spring 20, rocking arm 13 is close to one end of piston rod 22, in piston rod
Under 22 drive, also move right, and rocking arm 13 realizes rotary motion around rocker arm shaft 10 so that the other end of rocking arm 13, band
Dynamic shifting block 24, slide bar and shift fork, are realized to left movement, so as to realize the mounting of III gear.
III gear separation：The oil-feed of first oil inlet P 1, III gear magnetic valve G power-off, the oil-feed oil circuit to the 3rd working chamber C is cut
It is disconnected, and oil return box, the 3rd working chamber C oil pressure is reduced rapidly, in the presence of return spring 20, promotes piston 18 and piston rod
22 are moved to the left, and rocking arm 13 under the drive of piston rod 22, is also moved to the left close to one end of piston rod 22, and rocking arm 13 around
Rocker arm shaft 10 and realize rotary motion so that the other end of rocking arm 13 drives shifting block 24, slide bar and shift fork, realization is moved right,
Finally until return spring 20 returns to initial makeup location, so as to realize the separation of III gear.
IV gear mounting：The oil-feed of second oil inlet P 2, IV gear magnetic valve H is powered, and hydraulic oil enters the 4th working chamber D, promotes
Piston 18 and piston rod 22 are moved to the left, while compression retracteding position spring 20, rocking arm 13 is close to one end of piston rod 22, in piston rod
Under 22 drive, also it is moved to the left, and rocking arm 13 realizes rotary motion around rocker arm shaft 10 so that the other end of rocking arm 13, band
Dynamic shifting block 24, slide bar and shift fork, realization is moved right, so as to realize the mounting of IV gear.
IV gear separation：The oil-feed of second oil inlet P 2, IV gear magnetic valve H power-off, the oil-feed oil circuit to the 4th working chamber D is cut
It is disconnected, and oil return box, the 4th working chamber D oil pressure is reduced rapidly, in the presence of return spring 20, promotes piston 18 and piston rod
22 move right, and rocking arm 13 under the drive of piston rod 22, also moves right close to one end of piston rod 22, and rocking arm 13 around
Rocker arm shaft 10 and realize rotary motion so that the other end of rocking arm 13, drive shifting block 24, slide bar and shift fork, realize to left movement,
Finally until return spring 20 returns to initial makeup location, so as to realize the separation of IV gear.
Similarly, pass through switching of the control unit according to certain shift logic quick manipulation magnetic valve, you can realize I gear,
Switching between II gear, III gear, IV gear, detailed process will not be repeated here.
Claims (6)
1. tractor electrichydraulic control gearshift, including：Piston shell（1）, screw（2）, bushing（3）, cover plate（4）, alignment pin
（5）, sensor bolt（6）, sensor（7）, the first bolt（8）, positioning sleeve（9）, rocker arm shaft（10）, banking pin（11）, rocking arm
Back-up ring（12）, rocking arm（13）, shaft end block（14）, locking nail（15）, locking plate（16）, tailpiece of the piston rod back-up ring（17）, piston（18）、
Spacing back-up ring（19）, return spring（20）, spring stop（21）, piston rod（22）, the second bolt（23）, shifting block（24）, I gear electricity
Magnet valve（E）, II gear magnetic valve（F）, III gear magnetic valve（G）, IV gear magnetic valve（H）, the first oil inlet（P1）, the second oil inlet
（P2）；It is characterized in that：Piston shell（1）Transverse holes both sides be symmetrically installed shaft end blocking（14）, center section from left to right
Tailpiece of the piston rod back-up ring is installed successively（17）, piston rod（22）, piston（18）, spacing back-up ring（19）, spring stop（21）, return bullet
Spring（20）, spring stop（21）；Wherein piston（18）, spring stop（21）, return spring（20）It is socketed in piston rod（22）On,
Tailpiece of the piston rod back-up ring（17）Installed in piston rod（22）Neck in, spacing back-up ring（19）It is assemblied in piston shell（1）Transverse direction
Kong Zhong；Rocking arm（13）Power intake be embedded in piston rod（22）On, output end insertion shifting block（24）On.
2. tractor electrichydraulic control gearshift according to claim 1, it is characterised in that：Rocking arm（13）Symmetrically it is sleeved on
Rocker arm shaft（10）On, rocking arm back-up ring is installed in both sides（12）；Rocker arm shaft（10）Pass through banking pin（11）It is fixed on piston shell（1）
Upright opening in.
3. tractor electrichydraulic control gearshift according to claim 1, it is characterised in that：Piston shell（1）Outside
Pass through alignment pin on face（5）, sensor bolt（6）Cover plate is installed（4）, cover plate（4）On be welded with bushing（3）, screw（2）Peace
Mounted in bushing（3）Inside, while being inserted into piston rod（22）Axial neck in.
4. tractor electrichydraulic control gearshift according to claim 1, it is characterised in that：Piston shell（1）Outside
Installation locking is followed closely on face（15）, locking plate（16）, wherein locking plate（16）It is locked to be blocked in shaft end（14）On.
5. tractor electrichydraulic control gearshift according to claim 1, it is characterised in that：It is installed on piston shell（1）
Rocker arm shaft in inner vertical hole（10）Center line and it is installed on piston shell（1）Sensor in outside vertical hole（7）Center
Line is located in same fore-and-aft plane.
6. tractor electrichydraulic control gearshift according to claim 1, it is characterised in that：It is installed on piston shell（1）
I gear magnetic valve on the left of outer surface（E）, III gear magnetic valve（G）With the first oil inlet of same side（P1）Communicate；It is installed on work
Fill in housing（1）II gear magnetic valve on the right side of outer surface（F）, IV gear magnetic valve（H）With the second oil inlet of same side（P2）Phase
It is logical, it is connected by pipeline with hydraulic pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510135471.8A CN104712751B (en) | 2015-03-26 | 2015-03-26 | Tractor electrichydraulic control gearshift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510135471.8A CN104712751B (en) | 2015-03-26 | 2015-03-26 | Tractor electrichydraulic control gearshift |
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| Publication Number | Publication Date |
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| CN104712751A CN104712751A (en) | 2015-06-17 |
| CN104712751B true CN104712751B (en) | 2017-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510135471.8A Active CN104712751B (en) | 2015-03-26 | 2015-03-26 | Tractor electrichydraulic control gearshift |
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| CN106763718A (en) * | 2016-11-28 | 2017-05-31 | 广西大学 | Tractor gear manipulation device |
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| CN1417052A (en) * | 2001-11-07 | 2003-05-14 | 欧阳抗美 | Executing cylinder for gear box shift module |
| JP2007177821A (en) * | 2005-12-27 | 2007-07-12 | Nachi Fujikoshi Corp | Hydraulic drive unit |
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| CN101245850A (en) * | 2008-03-20 | 2008-08-20 | 重庆大学 | Mechanical automatic speed-changing direct-shifting hydraulic actuator of heavy vehicle |
| US8065930B2 (en) * | 2008-03-26 | 2011-11-29 | GM Global Technology Operations LLC | Hydraulic actuator for transmissions having reduced noise |
| CN102261461A (en) * | 2011-04-26 | 2011-11-30 | 浙江吉利汽车研究院有限公司 | Gear selection actuating mechanism of electronic controlled mechanical-type automatic transmission |
| CN202946658U (en) * | 2012-10-31 | 2013-05-22 | 武汉理工通宇新源动力有限公司 | Automatic speed changer hydraulic shifting actuator |
| CN204553812U (en) * | 2015-03-26 | 2015-08-12 | 第一拖拉机股份有限公司 | Tractor electrichydraulic control gearshift |
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2015
- 2015-03-26 CN CN201510135471.8A patent/CN104712751B/en active Active
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