CN102678913B - Screw rod gear selecting and gear shifting mechanism - Google Patents
Screw rod gear selecting and gear shifting mechanism Download PDFInfo
- Publication number
- CN102678913B CN102678913B CN201110373662.XA CN201110373662A CN102678913B CN 102678913 B CN102678913 B CN 102678913B CN 201110373662 A CN201110373662 A CN 201110373662A CN 102678913 B CN102678913 B CN 102678913B
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- gear
- gearshift
- screw mandrel
- gear shifting
- shaft
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Abstract
The invention relates to a screw rod gear selecting and gear shifting mechanism, comprising a gear selecting mechanism and a gear shifting mechanism. The gear selecting mechanism is a screw rod gear selecting mechanism, and comprises a screw rod with the rotating axis parallel with a gear shifting shaft; a nut making linear motion along the rotating axis when the screw rod rotates is assembled on the screw rod, the nut is in transmission connection with a gear shifting fingerstall through a driven rod fixed with the nut, and the gear shifting fingerstall is axially assembled on a gear shifting finger along the gear shifting shaft in a limiting and rotating mode. The gear selecting mechanism is a screw rod-nut mechanism, wherein the nut is driven to make linear motion through driving the screw rod to rotate, the nut drives the gear shifting finger to slide along the gear shifting shaft through the driven rod, and the gear shifting finger glides to a position corresponding to a shifting fork shaft, therefore, gear selecting is realized. The gear shifting mechanism comprises a gear shifting shaft and a gear shifting finger matched with the gear shifting shaft through a spline. When the gear shifting shaft rotates, the gear shifting finger is driven to rotate so as to drive a shifting fork, and the corresponding shifting fork shaft is turned to move to a proper gear so that gear shifting is realized.
Description
Technical field
The present invention relates to wheel gearshift field, particularly tractor electric-controlled mechanical gearshift.
Background technique
In recent years, along with the progress of automobile automatic gear technology, the research of China's automatic transmission product has obtained large development, has in succession occurred different types of automatic transmission.The gear shifting force needing during tractor gearshift is larger, and the frequent operation of traditional manual gearshift easily causes driver fatigue.On tractor, apply automatic transmission, research tractor automatic Transmissions Technique more and more comes into one's own.Automobile-used electric control mechanical type automatic speed variator gear shift mechanism of the prior art mostly adopts hydraulic control, generally adopts double hydraulic cylinder X-Y orthogonal formula to arrange, its control structure more complicated, and control unit is more, and manufacture cost is higher; Because hydraulic system performance temperature influence is larger, make to use region to be subject to certain restrictions; In addition, hydraulic element are higher to requirement on machining accuracy, the manufacture processing more complicated of solenoid valve, and also control accuracy is lower; Hydraulic oil easily leaks, befouling environment.
Summary of the invention
The object of this invention is to provide a kind of compact structure, easy, easy to operate tractor electric control mechanical type automatic speed variator gear shift mechanism is installed, in order to solve existing mechanism structure complexity, to control inconvenient problem.
For achieving the above object, the solution of the present invention is: a kind of screw mandrel gear shift mechanism, comprise gear selection mechanism and gearshift, described gearshift comprises a shifting shaft, on shifting shaft, only revolving the earth's axis has gearshift to refer to slidable fit, gearshift refers to be fixed with shift fork, and corresponding shift fork is set side by side with at least two perpendicular to the declutch shift shaft of shifting shaft; Described gear selection mechanism is screw mandrel gear selection mechanism, comprise the screw mandrel that rotation axis and shifting shaft be arranged in parallel, on screw mandrel, be equipped with when screw mandrel rotates along the straight-line screw of rotation axis, screw is in transmission connection by fixing with it follower lever and one gearshift fingerstall, this gearshift fingerstall along shifting shaft axial limiting rotate and be assemblied in described gearshift and refer to; Described screw mandrel gear shift mechanism also comprises a dual-axle motor, and two output shafts of this dual-axle motor are driven respectively and connected described screw mandrel and shifting shaft by each self-corresponding clutch.
Two output shafts of described dual-axle motor are vertical, between one of them output shaft and its screw mandrel driving or shifting shaft, are provided with turbine and worm mechanism.Described shifting shaft and described gearshift refer to only be screwed and close by spline.Described follower lever one end and the welding of described screw, the other end and described gearshift fingerstall are hinged.
Gear shift mechanism of the present invention, gear selection mechanism is screw mandrel screw mechanism, by driving screw mandrel to rotate, drives screw straight line motion, and screw drives to shift gears by follower lever and refers to along shifting shaft slide, slide into the position of corresponding declutch shift shaft, thereby realize block selecting.Gearshift comprises shifting shaft and refers to the gearshift of shifting shaft by spline fitted, when shifting shaft rotates, drives gearshift to refer to rotate, thereby drives shift fork, stirs corresponding declutch shift shaft and moves to suitable gear, realizes gearshift.
Accompanying drawing explanation
Fig. 1 is the structural drawing of gear shift mechanism of the present invention;
Fig. 2 is follower lever structural drawing of the present invention;
Fig. 3 is that gearshift of the present invention refers to structural drawing;
Fig. 4 is declutch shift shaft structure figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
For a gear shift mechanism for tractor, comprise gear selection mechanism and gearshift as shown in Figure 1, gearshift comprises a shifting shaft 9, and gearshift refers to that 8 are only screwed and close by spline and shifting shaft 9, and can endwisely slip along shifting shaft 9.Gearshift refers to that 8 lower ends are fixed with shift fork 81, and corresponding shift fork 81 is set side by side with three perpendicular to the declutch shift shaft 12,14,15 of shifting shaft.
Gear selection mechanism is screw mandrel gear selection mechanism, comprises the screw mandrel 4 be arrangeding in parallel with shifting shaft 9, is equipped with screw 5 on screw mandrel 4, and one end of screw 5 and a follower lever 6 is welded and fixed, and the other end of follower lever 6 is hinged with gearshift fingerstall 30.As shown in Figure 2 and Figure 3, follower lever 6 head A are ears ring structure, have hole B and hole C; Gearshift fingerstall 30 one end arrange hole D, coordinate with hole B, C, insert bearing pin and form hinging structure.Gearshift fingerstall 30 is set in gearshift and refers to, in 8 chute, can freely rotate, but the axial motion referring to along gearshift is limited.
Screw mandrel gear shift mechanism also comprises a dual-axle motor 1 with two vertical output axles, two output shafts drive respectively connection wire rod 4 and shifting shaft 8 by clutch 2,3 separately, between output shaft and shifting shaft 8, being provided with turbine and worm mechanism 18,17,18 is worm screw, and 17 is turbine.As other mode of executions, also can adopt the motor of two parallel output shafts, now need for the output shaft with turbine and worm transmission increases a mechanism that changes sense of rotation again, as bevel gear mechanism.
As shown in Figure 4, the I miniature linear displacement transducer 11 that reverses gear is arranged on I gear reverse declutch shift shaft 12, and II III is kept off miniature linear displacement transducer 13 and is arranged on II III gear declutch shift shaft 14, and IV V is kept off miniature linear displacement transducer 16 and is arranged on IV V gear declutch shift shaft 15.
The I of take gear is changed to II gear and is specifically described as example: first, electronic control unit is controlled 3 energisings of block selecting magnetic clutch, enter jointing state, then motor 1 energising is rotated, and drives screw mandrel 4 to rotate, and nut 5 drives gearshift to refer to that 8 move axially along splined shaft 9 by follower lever 6, when arriving guide block 20 place, block selecting position transducer 10 feedback signals, electronic control unit is controlled motor 1 and is stopped operating, 3 power-off of block selecting magnetic clutch; Then, 2 energisings of gearshift magnetic clutch, enter jointing state, motor 1 is switched on and is rotated, and by worm screw 18, worm gear 17, drives splined shafts 9 to rotate, and then gearshift refers to that 8 stir guide block 20 drive I gear reverse declutch shift shaft 12 motions, when moving to desired location, I drive range sensor 11 feedback signals of reversing gear, electronic control unit is controlled motor 1 magnetic clutch 2 power-off that stop operating and shift gears, and hangs into I gear.When needs are hung while keeping off into II, first, electronic control unit is controlled 2 energisings of gearshift magnetic clutch and is engaged, then motor 1 energising is rotated, by worm screw 18, worm gear 17 mechanisms, drive splined shaft 9 to rotate, make gearshift refer to that 8 stir guide block 20 and drive I gear reverse declutch shift shafts 12 to be moved back into neutral gear position, electronic control unit is controlled motor 1 magnetic clutch 2 power-off that stop operating and shift gears; Then, 3 energisings of block selecting magnetic clutch, motor 2 energisings drive screw mandrel 4 to rotate, make nut 5 drive gearshift to refer to that 8 move down along splined shaft 9 by follower lever 6, when gearshift refers to 8 arrival guide block 21 places, block selecting position transducer 10 feedback signals, electronic control unit is controlled motor 1 and is stopped operating and 3 power-off of block selecting magnetic clutch; Finally, electronic control unit is controlled 2 energisings of gearshift magnetic clutch, motor 1 energising is rotated, by worm screw 18, worm gear 17 mechanisms, drive splined shaft 9 to rotate, then gearshift refers to that 8 stir guide block 21 drive II III gear declutch shift shaft 14 motions, when moving to desired location, and II III gear drive range sensor 13 feedback signals, make motor 1 magnetic clutch 2 power-off that stop operating and shift gears, hang into II gear.In addition, three guide blocks 21,23,22 are not only for stirring corresponding declutch shift shaft, and as Fig. 4, their groove correspondences when gear selecting of stirring are separately linked to be one along the axial guiding groove 24 of gearshift, can also play the effect of righting when gear selecting.
The example of changing to II gear with regard to I gear above illustrates technological scheme principle, the invention is not restricted to this, is applicable to the requirement of the many gears of tractor.
Claims (4)
1. a screw mandrel gear shift mechanism, comprise gear selection mechanism and gearshift, described gearshift comprises a shifting shaft, and on shifting shaft, only revolving the earth's axis has gearshift to refer to slidable fit, gearshift refers to be fixed with shift fork, and corresponding shift fork is set side by side with at least two perpendicular to the declutch shift shaft of shifting shaft;
It is characterized in that, described gear selection mechanism is screw mandrel gear selection mechanism, comprise the screw mandrel that rotation axis and shifting shaft be arranged in parallel, on screw mandrel, be equipped with when screw mandrel rotates along the straight-line screw of rotation axis, screw is in transmission connection by fixing with it follower lever and one gearshift fingerstall, this gearshift fingerstall along shifting shaft axial limiting rotate and be assemblied in described gearshift and refer to; Gearshift fingerstall is set in shifts gears in the chute referring to, can freely rotate, but the axial motion referring to along gearshift is limited;
Described screw mandrel gear shift mechanism also comprises a dual-axle motor, and two output shafts of this dual-axle motor are driven respectively and connected described screw mandrel and shifting shaft by each self-corresponding clutch.
2. a kind of screw mandrel gear shift mechanism according to claim 1, is characterized in that, two output shafts of described dual-axle motor are vertical, between one of them output shaft and its screw mandrel driving or shifting shaft, is provided with turbine and worm mechanism.
3. a kind of screw mandrel gear shift mechanism according to claim 1, is characterized in that, described shifting shaft and described gearshift refer to only be screwed and close by spline.
4. a kind of screw mandrel gear shift mechanism according to claim 1, is characterized in that, described follower lever one end and the welding of described screw, and the other end and described gearshift fingerstall are hinged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110373662.XA CN102678913B (en) | 2011-11-22 | 2011-11-22 | Screw rod gear selecting and gear shifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110373662.XA CN102678913B (en) | 2011-11-22 | 2011-11-22 | Screw rod gear selecting and gear shifting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102678913A CN102678913A (en) | 2012-09-19 |
| CN102678913B true CN102678913B (en) | 2014-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110373662.XA Expired - Fee Related CN102678913B (en) | 2011-11-22 | 2011-11-22 | Screw rod gear selecting and gear shifting mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN102678913B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994191B (en) * | 2014-05-12 | 2017-05-17 | 中国航空工业集团公司沈阳飞机设计研究所 | Transition mechanism of energy drive |
| CN106481802B (en) * | 2016-12-05 | 2018-11-20 | 广州汽车集团股份有限公司 | shift actuator |
| CN110630712A (en) * | 2018-06-21 | 2019-12-31 | 上海汽车集团股份有限公司 | Transmission and gear selecting and shifting mechanism thereof |
| CN110103707B (en) * | 2019-06-05 | 2024-05-17 | 吉林大学 | Automatic gear shift control mechanism of gear linear arrangement type automatic driving automobile |
| CN112344014A (en) * | 2020-11-25 | 2021-02-09 | 南京清研海易新能源动力有限责任公司 | Electrical integration gearshift and vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201386785Y (en) * | 2009-03-04 | 2010-01-20 | 富奥汽车零部件股份有限公司 | Gear selecting and shifting actuator |
| CN201836360U (en) * | 2010-05-31 | 2011-05-18 | 南京奥联动力传动科技有限公司 | AMT gear select/shift actuating mechanism |
| CN102207191A (en) * | 2011-02-28 | 2011-10-05 | 中国北方车辆研究所 | Screw type gear shift executing mechanism for mechanical type automatic transmission system |
| CN202349190U (en) * | 2011-11-22 | 2012-07-25 | 河南科技大学 | Screw rod gear selecting and shifting mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1508727A2 (en) * | 2003-08-16 | 2005-02-23 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Actuating device in particular for shifting a gear box |
-
2011
- 2011-11-22 CN CN201110373662.XA patent/CN102678913B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201386785Y (en) * | 2009-03-04 | 2010-01-20 | 富奥汽车零部件股份有限公司 | Gear selecting and shifting actuator |
| CN201836360U (en) * | 2010-05-31 | 2011-05-18 | 南京奥联动力传动科技有限公司 | AMT gear select/shift actuating mechanism |
| CN102207191A (en) * | 2011-02-28 | 2011-10-05 | 中国北方车辆研究所 | Screw type gear shift executing mechanism for mechanical type automatic transmission system |
| CN202349190U (en) * | 2011-11-22 | 2012-07-25 | 河南科技大学 | Screw rod gear selecting and shifting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102678913A (en) | 2012-09-19 |
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