CN103883715A - Transmission box for micro tilling machine - Google Patents
Transmission box for micro tilling machine Download PDFInfo
- Publication number
- CN103883715A CN103883715A CN201310579091.4A CN201310579091A CN103883715A CN 103883715 A CN103883715 A CN 103883715A CN 201310579091 A CN201310579091 A CN 201310579091A CN 103883715 A CN103883715 A CN 103883715A
- Authority
- CN
- China
- Prior art keywords
- control
- live axle
- transmission case
- gear train
- microtilling machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B71/00—Construction or arrangement of setting or adjusting mechanisms, of implement or tool drive or of power take-off; Means for protecting parts against dust, or the like; Adapting machine elements to or for agricultural purposes
- A01B71/06—Special adaptations of coupling means between power take-off and transmission shaft to the implement or machine
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
Abstract
The invention discloses a transmission box for a micro tilling machine. The transmission box comprises a shell (1), a driving shaft (2) and a transmission shaft (3) are mounted on the shell (1) and are in mutual meshing, connection and transmission through a gear, a control mechanism (4) used for adjusting axial position of a gear on the driving shaft (2) to control rotating speed and rotating direction of the transmission shaft (3) is arranged on the driving shaft (2), and a stopper (5) used for stopping rotation is mounted on the driving shaft (2). The transmission box is a transmission box with a differential, so that the rotating speed can be changed easily, changing of the rotating direction and controlling of advancing and retreating can be realized, the micro tilling machine with the transmission box is enabled to be suitable for people of any age group, with any physical strength and different in proficiency to use, thereby being wider in application range, and the micro tilling machine is enabled to timely stop under any emergency to avoid various unfavorable consequences in the process of running.
Description
Technical field
The present invention relates to the agricultural equipment technical field of cultivating, especially, relate to a kind of microtilling machine transmission case.
Background technique
Along with scientific and technical development, farm machinery is more and more popularized, and has occurred various novel agricultural type farming equipments.
At present, miniature farming machine (abbreviation microtilling machine) is of a great variety, but existing microtilling machine adopts complicated driving mechanism or complicated driving mode mostly, and making to manufacture and design difficulty increases, and cost is also in continuous rising; And cannot well control for driving mechanism, cause driving force excessive, be not suitable for the too small crowd of muscle power and use, make Applicable scope limited.
Summary of the invention
The object of the invention is to provide a kind of microtilling machine transmission case, with solve existing microtilling machine manufacture and design difficulty large, cannot carry out driving force control, the excessive limited technical problem of Applicable scope that causes of driving force.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of microtilling machine transmission case, comprise housing, live axle and transmission shaft are housed on housing, between live axle and transmission shaft, pass through the intermeshing connection of gear transmission, live axle is provided with for regulating the axial position that live axle cogs to pass to the rotating speed of transmission shaft and the control mechanism of sense of rotation to control, and the stopper stopping operating is also housed on live axle.
Further, control mechanism comprises in order to the gear train of transmission, in order to the splined shaft of mounting teeth wheels, in order to regulate the cog adjusting of group axial position of splined shaft to insert, insert vertically mobile control key and be connected on control key for manually controlling the Joystick of control key in order to regulating and controlling.
Further, gear train comprises at least one in single gear, two integrated parallel gears or three integrated parallel gears, on gear train, also offers in order to socket joint and regulates slotting control flume.
Further, control flume is opened between parallel gears or is opened in the end of gear train.
Further, control key is connected on housing by coupling shaft is axially displaceable, regulates to insert to be fixed on the coupling shaft of control key; Control key is also gone up also to offer for Joystick and is inserted manually to control the jack of control key.
Further, stopper comprises the bearing plug-in of colored shape part and wounded in the battle shape groove, flower shape part matches with the profile of flower shape groove, and bearing plug-in is fixed on the housing of driveshaft end, and flower shape part is connected to live axle and is movably set on live axle and setting corresponding to bearing plug-in.
The position of further, spending shape part to contact with bearing plug-in is also provided with to cushion the shock absorber of interaction force.
Further, live axle is provided with the different gear train of many packet sizes, in housing, be provided with multiple control keys that fit together, each control key is connected with at least one adjusting and inserts, and multiple control keys are inserted and are connected on the gear train of different size by the adjusting on control key.
Further, Joystick stretches out outside housing, the pillar that the position that Joystick is connected with housing is also provided with to cushion Joystick and housing interaction force and limits Joystick moving range.
Further, housing is provided with for the service ports of maintain internal structure and/or the bindiny mechanism in order to be connected with microtilling machine.
The present invention has following beneficial effect:
This microtilling machine is a kind of transmission case with differential mechanism with transmission case.This microtilling machine directly acts on the live axle of power source with transmission case, live axle is carried out to driving force and driving direction control thereof, control better effects if, needed control energy still less, can play the effect of environmental protection and energy saving, can reduce the burden that drive part regulates driving force or driving direction, whole service life is improved simultaneously; By directly live axle being carried out to stop, stopping effect is better, and required stopping power is less, can not bring burden to drive part, and whole service life is improved; By being set on live axle, control mechanism passes to driving force and the driving direction thereof of transmission shaft to control live axle, by rotating speed and the sense of rotation of control mechanism control transmission shaft, can regulate arbitrarily the speed and strength of transmission, and can change easily sense of rotation control advances and retreats, the people that the microtilling machine that makes to be equipped with this transmission case can be applicable to any ages, different qualification and any physique muscle power uses, and Applicable scope is wider; On live axle, be also provided with stopper, can at any time the transmission case in work be stopped operating by stopper, microtilling machine is being stopped in time under any emergency situations, to avoid the negative consequence in various runnings; Total is simple, it is easy to make to install, and controls simple, easy to use; Go for the driving force control of all kinds of tillage machine.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of transmission case for the microtilling machine of the preferred embodiment of the present invention;
Fig. 2 is one of structural representation of the gear train of the preferred embodiment of the present invention;
Fig. 3 be the gear train of the preferred embodiment of the present invention structural representation two;
Fig. 4 be the gear train of the preferred embodiment of the present invention structural representation three;
Fig. 5 is the structural representation of the splined shaft of the preferred embodiment of the present invention;
Fig. 6 is the slotting structural representation of the adjusting of the preferred embodiment of the present invention;
Fig. 7 is the structural representation of the control key of the preferred embodiment of the present invention;
Fig. 8 is the structural representation of the stopper of the preferred embodiment of the present invention;
Fig. 9 is the structural representation of the colored shape part of the preferred embodiment of the present invention;
Figure 10 is the structural representation of the bearing plug-in of the preferred embodiment of the present invention.
Marginal data:
1, housing; 2, live axle; 3, transmission shaft; 4, control mechanism; 401, gear train; 402, splined shaft; 403, regulate and insert; 404, control key; 405, Joystick; 5, stopper; 501, spend shape part; 502, bearing plug-in; 6, control flume; 7, coupling shaft; 8, spend shape groove; 9, shock absorber; 10, pillar; 11, service ports; 12, bindiny mechanism; 13, jack.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Fig. 1 is the structural representation of transmission case for the microtilling machine of the preferred embodiment of the present invention; Fig. 2 is one of structural representation of the gear train of the preferred embodiment of the present invention; Fig. 3 be the gear train of the preferred embodiment of the present invention structural representation two; Fig. 4 be the gear train of the preferred embodiment of the present invention structural representation three; Fig. 5 is the structural representation of the splined shaft of the preferred embodiment of the present invention; Fig. 6 is the slotting structural representation of the adjusting of the preferred embodiment of the present invention; Fig. 7 is the structural representation of the control key of the preferred embodiment of the present invention; Fig. 8 is the structural representation of the stopper of the preferred embodiment of the present invention; Fig. 9 is the structural representation of the colored shape part of the preferred embodiment of the present invention; Figure 10 is the structural representation of the bearing plug-in of the preferred embodiment of the present invention.
As shown in Fig. 1 and Fig. 8, the microtilling machine transmission case of the present embodiment, comprise housing 1, live axle 2 and transmission shaft 3 are housed on housing 1, between live axle 2 and transmission shaft 3, pass through the intermeshing connection of gear transmission, live axle 2 is provided with for regulating the axial position that live axle 2 cogs to pass to the rotating speed of transmission shaft 3 and the control mechanism of sense of rotation 4 to control, and the stopper 5 stopping operating is also housed on live axle 2.This microtilling machine is a kind of transmission case with differential mechanism with transmission case.This microtilling machine directly acts on power source live axle 2 with transmission case, live axle 2 is carried out to driving force and driving direction control thereof, control better effects if, needed control energy still less, can play the effect of environmental protection and energy saving, can reduce the burden that drive part regulates driving force or driving direction, whole service life is improved simultaneously; By directly live axle 2 being carried out to stop, stopping effect is better, and required stopping power is less, can not bring burden to drive part, and whole service life is improved; By being set on live axle 2, control mechanism 4 passes to driving force and the driving direction thereof of transmission shaft 3 to control live axle 2, control rotating speed and the sense of rotation of transmission shaft 3 by control mechanism 4, can regulate arbitrarily the speed and strength of transmission, and can change easily sense of rotation control advances and retreats, the people that the microtilling machine that makes to be equipped with this transmission case can be applicable to any ages, different qualification and any physique muscle power uses, and Applicable scope is wider; On live axle 2, be also provided with stopper 5, can at any time the transmission case in work be stopped operating by stopper 5, microtilling machine is being stopped in time under any emergency situations, to avoid the negative consequence in various runnings; Total is simple, it is easy to make to install, and controls simple, easy to use; Go for the driving force control of all kinds of tillage machine.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, in the present embodiment, control mechanism 4 comprises in order to the gear train 401 of transmission, in order to the splined shaft 402 of mounting teeth wheels 401, in order to regulate the cog adjusting of group 401 axial positions of splined shaft 402 to insert 403, insert 403 control keys that move vertically 404 and be connected on control key 404 Joystick 405 for manually controlling control key 404 in order to regulating and controlling.Position by live axle 2 in housing 1 is designed to splined shaft 402, rotates with actuation gear by mounting teeth wheels 401 on splined shaft 402; Regulate slotting 403 to be inserted on gear train 401, control control key 404 by Joystick 405 and regulate to drive the axial position of inserting 403 regulating tooth wheels 401, make the gear of different size intermeshing, to reach the object that regulates transmission shaft 3 rotating speeds and sense of rotation.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, gear train 401 comprises at least one in single gear, two integrated parallel gears or three integrated parallel gears, also offers in order to socket joint and regulate the control flume 6 of inserting 403 on gear train 401.By the mode of control flume 6 is set on gear train 401, mated and be connected by control flume 6 and adjusting slotting 403, make to regulate the adjusting of slotting 403 pairs of gear trains 401 simpler, the stability of adjusting is higher, the accuracy regulating is higher, is not easy to occur regulating problem not in place.Fig. 1 is gearwheel and the small gear being arranged in parallel, and between gearwheel and small gear, is assembled into one by axle sleeve, offers control flume 6 on axle sleeve; Fig. 2 is that single gear side and axle sleeve are assembled into one, and offers control flume 6 on axle sleeve; Fig. 3 is gearwheel and the small gear being arranged in parallel, and between gearwheel and small gear and the end of large small gear is all assembled into one with axle sleeve, offers control flume 6 on the axle sleeve of end.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, in the present embodiment, control flume 6 is opened between parallel gears or is opened in the end of gear train 401.The position of offering according to gear train 401 adjusting set direction control flume 6 vertically, to facilitate the axial adjustment to gear train 401; Making to be applied to control force on Joystick 405, to convert the conversion ratio of axial mechanical adjustment power to higher, and control mechanism 4 global stability are better.
As shown in Fig. 1, Fig. 6 and Fig. 7, in the present embodiment, control key 404 is connected on housing 1 by coupling shaft 7 is axially displaceable, regulates slotting 403 to be fixed on the coupling shaft 7 of control key 404; Control key 404 is also gone up and is also offered the jack 13 that inserts manually to control control key 404 for Joystick 405.By Joystick 405 being inserted to jack 13 to facilitate control control key 404 to drive adjusting slotting 403 to go to the position that moves axially of regulating tooth wheels 401, control simple and convenient.
As shown in Fig. 1, Fig. 8, Fig. 9 and Figure 10, in the present embodiment, stopper 5 comprises the bearing plug-in 502 of colored shape part 501 and wounded in the battle shape groove 8, flower shape part 501 matches with the profile of flower shape groove 8, bearing plug-in 502 is fixed on the housing 1 of live axle 2 ends, and flower shape part 501 is connected to live axle 2 and is movably set on live axle 2 and setting corresponding to bearing plug-in 502.By flower shape part 501 and being connected of bearing plug-in 502 coordinating the live axle 2 making rotating to stop operating; Flower shape part 501 is to control its axial position on live axle 2 by control mechanism 4 equally, promotes flower shape part 501 and enters bearing plug-in 502 to realize stop, flower shape part 501 is shifted out to bearing plug-in 502 and make live axle 2 normal rotation.Stopper 5 also can adopt other counterparts that can prevent rotation, such as, spline and spline housing, convex configuration and concave configuration etc.
As shown in Fig. 1, Fig. 8, Fig. 9 and Figure 10, in the present embodiment, the position that flower shape part 501 contacts with bearing plug-in 502 is also provided with to cushion the shock absorber 9 of interaction force.Prevent that the interaction force causing due to frequent operation from destroying, also can avoid because undue laminating causes the problem that cannot separate, particularly when each class I liquid I enters the excessive situation of laminating position combination force that causes simultaneously.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, in the present embodiment, live axle 2 is provided with the different gear train of many packet sizes 401, in housing 1, be provided with multiple control keys that fit together 404, each control key 404 is connected with at least one adjusting and inserts 403, and multiple control keys 404 are inserted 403 by the adjusting on control key 404 and are connected on the gear train 401 of different size.By multiple control keys 404 being set to control the gear train 401 of variety classes different size, the convenient orderly adjusting for gear train 401, makes to control convenient.
As shown in Figure 1, in the present embodiment, Joystick 405 stretches out outside housing 1, the pillar 10 that the position that Joystick 405 is connected with housing 1 is also provided with to cushion Joystick 405 and housing 1 interaction force and limits Joystick 405 movings range.Joystick 405 stretches out housing 1 to facilitate manual tune; Can reduce the interaction force between Joystick 405 and housing 1 in manual tune process by pillar 10, pillar 10 can also be limited in the modification scope of Joystick 405 scope between pillar 10 perforates simultaneously, prevents the problem that Joystick 405 deviates to cause control to lose efficacy.
As shown in Figure 1, in the present embodiment, housing 1 is provided with for the service ports 11 of maintain internal structure and/or the bindiny mechanism 12 in order to be connected with microtilling machine.The problem that can exist for inside in time by service ports 11 is observed, keeps in repair and changes; Can facilitate connection, the installation of transmission case by bindiny mechanism 12.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a microtilling machine transmission case, comprises housing (1),
Live axle (2) and transmission shaft (3) are housed on described housing (1),
Between described live axle (2) and described transmission shaft (3), pass through the intermeshing connection of gear transmission,
It is characterized in that,
Described live axle (2) is provided with for regulating the axial position that described live axle (2) cogs to pass to the rotating speed of described transmission shaft (3) and the control mechanism (4) of sense of rotation to control,
The stopper (5) stopping operating is also housed on described live axle (2).
2. microtilling machine transmission case according to claim 1, it is characterized in that, described control mechanism (4) comprises the gear train (401) in order to transmission, in order to the splined shaft (402) of described gear train (401) to be installed, insert (403) in order to the adjusting that regulates the above gear train of described splined shaft (402) (401) axial position, insert (403) mobile control key (404) and to be connected to described control key (404) upper for manually controlling the Joystick (405) of described control key (404) vertically in order to control described adjusting.
3. microtilling machine transmission case according to claim 2, is characterized in that,
Described gear train (401) comprises at least one in single gear, two integrated parallel gears or three integrated parallel gears,
On described gear train (401), also offer in order to regulate the control flume (6) of inserting (403) described in socket joint.
4. microtilling machine transmission case according to claim 3, is characterized in that, described control flume (6) is opened between parallel gears or the end axis that is opened in described gear train (401) puts.
5. microtilling machine transmission case according to claim 4, is characterized in that,
Described control key (404) is connected to described housing (1) above by coupling shaft (7) is axially displaceable,
Described adjusting is inserted (403) and is fixed on the described coupling shaft (7) of described control key (404);
Described control key (404) is also gone up also to offer for described Joystick (405) and is inserted manually to control the jack (13) of described control key (404).
6. microtilling machine transmission case according to claim 5, is characterized in that,
Described stopper (5) comprises the bearing plug-in (502) of colored shape part (501) and wounded in the battle shape groove (8),
Described colored shape part (501) matches with the profile of described colored shape groove (8),
Described bearing plug-in (502) is fixed on the described housing (1) of described live axle (2) end,
Described colored shape part (501) is movably set in described live axle (2) above and setting corresponding to described bearing plug-in (502).
7. microtilling machine transmission case according to claim 6, is characterized in that, the position that described colored shape part (501) contacts with described bearing plug-in (502) is also provided with to cushion the shock absorber (9) of interaction force.
8. according to the microtilling machine transmission case described in any one in claim 2 to 7, it is characterized in that,
Described live axle (2) is provided with the different described gear train (401) of many packet sizes,
In described housing (1), be provided with multiple control keys that fit together (404),
Each described control key (404) is connected with described at least one and regulates and insert (403),
Multiple described control keys (404) are inserted (403) by the described adjusting on described control key (404) and are connected on the described gear train (401) of different size.
9. according to the microtilling machine transmission case described in any one in claim 2 to 7, it is characterized in that,
Described Joystick (405) stretches out outside described housing (1),
The pillar (10) that the position that described Joystick (405) is connected with described housing (1) is also provided with to cushion described Joystick (405) and described housing (1) interaction force and limits described Joystick (405) moving range.
10. according to the microtilling machine transmission case described in any one in claim 1 to 7, it is characterized in that, described housing (1) is provided with for the service ports (11) of maintain internal structure and/or the bindiny mechanism (12) in order to be connected with microtilling machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310579091.4A CN103883715B (en) | 2013-11-18 | 2013-11-18 | A kind of mini-tiller transmission case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310579091.4A CN103883715B (en) | 2013-11-18 | 2013-11-18 | A kind of mini-tiller transmission case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103883715A true CN103883715A (en) | 2014-06-25 |
| CN103883715B CN103883715B (en) | 2017-06-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310579091.4A Expired - Fee Related CN103883715B (en) | 2013-11-18 | 2013-11-18 | A kind of mini-tiller transmission case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103883715B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939968A (en) * | 2017-12-31 | 2018-04-20 | 柏菲农业机械科技常州有限公司 | The shift speed change mechanism of equipment for plant protection |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5799486A (en) * | 1996-01-09 | 1998-09-01 | Kanzaki Kokyukoki Mfg. Co., Ltd. | Axle driving apparatus |
| JP2002147584A (en) * | 2000-11-10 | 2002-05-22 | Toyota Motor Corp | Driving device for automobile |
| CN201013885Y (en) * | 2007-02-12 | 2008-01-30 | 中国南车集团戚墅堰机车车辆工艺研究所 | Axle gear box gear shifting locking mechanism |
| CN102080708A (en) * | 2011-02-16 | 2011-06-01 | 陈万荣 | Transmission case of micro farming machine |
| CN102562971A (en) * | 2010-11-30 | 2012-07-11 | 上海达耐时汽车配件有限公司 | Speed-transformation device for electric automobile |
| CN102628494A (en) * | 2012-04-16 | 2012-08-08 | 何嘉俊 | Mini tiller transmission case with double-clutch structure |
| CN203570988U (en) * | 2013-11-18 | 2014-04-30 | 湖南创牛农业机械有限公司 | Transmission case for mini-tiller |
-
2013
- 2013-11-18 CN CN201310579091.4A patent/CN103883715B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5799486A (en) * | 1996-01-09 | 1998-09-01 | Kanzaki Kokyukoki Mfg. Co., Ltd. | Axle driving apparatus |
| JP2002147584A (en) * | 2000-11-10 | 2002-05-22 | Toyota Motor Corp | Driving device for automobile |
| CN201013885Y (en) * | 2007-02-12 | 2008-01-30 | 中国南车集团戚墅堰机车车辆工艺研究所 | Axle gear box gear shifting locking mechanism |
| CN102562971A (en) * | 2010-11-30 | 2012-07-11 | 上海达耐时汽车配件有限公司 | Speed-transformation device for electric automobile |
| CN102080708A (en) * | 2011-02-16 | 2011-06-01 | 陈万荣 | Transmission case of micro farming machine |
| CN102628494A (en) * | 2012-04-16 | 2012-08-08 | 何嘉俊 | Mini tiller transmission case with double-clutch structure |
| CN203570988U (en) * | 2013-11-18 | 2014-04-30 | 湖南创牛农业机械有限公司 | Transmission case for mini-tiller |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939968A (en) * | 2017-12-31 | 2018-04-20 | 柏菲农业机械科技常州有限公司 | The shift speed change mechanism of equipment for plant protection |
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| Publication number | Publication date |
|---|---|
| CN103883715B (en) | 2017-06-09 |
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