KR20160062769A - Rear power trasnmission apparatus for working vehicle - Google Patents

Rear power trasnmission apparatus for working vehicle Download PDF

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Publication number
KR20160062769A
KR20160062769A KR1020140165039A KR20140165039A KR20160062769A KR 20160062769 A KR20160062769 A KR 20160062769A KR 1020140165039 A KR1020140165039 A KR 1020140165039A KR 20140165039 A KR20140165039 A KR 20140165039A KR 20160062769 A KR20160062769 A KR 20160062769A
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KR
South Korea
Prior art keywords
power
shaft
power take
rear wheel
input
Prior art date
Application number
KR1020140165039A
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Korean (ko)
Inventor
최덕순
도현대
고광명
임창욱
Original Assignee
국제종합기계 주식회사
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Priority to KR1020140165039A priority Critical patent/KR20160062769A/en
Publication of KR20160062769A publication Critical patent/KR20160062769A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/348—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed
    • B60K17/35—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed including arrangements for suppressing or influencing the power transfer, e.g. viscous clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/348—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed
    • B60K17/35—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed including arrangements for suppressing or influencing the power transfer, e.g. viscous clutches
    • B60K17/3505—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed including arrangements for suppressing or influencing the power transfer, e.g. viscous clutches with self-actuated means, e.g. by difference of speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/354—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having separate mechanical assemblies for transmitting drive to the front or to the rear wheels or set of wheels

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
  • Arrangement Of Transmissions (AREA)

Abstract

The present invention realizes a structure in which the power transmitted from the engine can be distributed to one of the driving power of the rear wheels and the working power of the working machine by one transmission mechanism and thereby the power transmission system or route can be configured to be more compact To a rear power transmission apparatus for a vehicle.
A rear power transmission device for a work vehicle according to the present invention includes: a rear axle case rotatably provided with a rear wheel driving transmission shaft rotatable on both right and left sides of a rear wheel; An input shaft rotatably installed on one side of the rear axle case; And a power take-off drive shaft rotatably installed on the other side of the rear axle case. The power input to the input shaft is transmitted to the rear wheel drive transmission shaft and the power take-off drive shaft through a single transmission mechanism.

Description

TECHNICAL FIELD [0001] The present invention relates to a rear power transmission apparatus for a working vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission of a work vehicle, and more particularly, to a power transmission system that realizes a structure capable of distributing power transmitted from an engine to a driving power of a rear wheel and a working power of a working machine by a single transmission mechanism, And more particularly, to a rear power transmission apparatus for a work vehicle that can be configured more compactly.

There are various types of vehicles, including a working vehicle that can carry out other tasks along with driving. There are various kinds of such working vehicles such as construction working vehicles and agricultural working vehicles. Among them, agricultural working vehicles include tractors, track shovelers, reapers, harvesters and the like.

Generally, the working vehicle is provided with an engine for generating power on its front side, and the power of the engine is transmitted to the front and rear wheels through the transmission. And. A front axle case for receiving power from the transmission is disposed in front of the working vehicle, a front axle case is configured to drive the front wheels, a rear axle case for receiving power from the transmission is arranged at the rear of the working vehicle, The case is configured to drive the rear wheels.

The rear axle case is provided with a power take-off unit that draws work power, and the power take-off unit is separately provided under the rear axle case.

Accordingly, in the conventional working vehicle, the rear power transmission structure is divided into the power transmission mechanism for driving that transmits the driving power to the rear wheel side and the power take-off motor shaft for powering the working power, So that the assemblability is deteriorated and the manufacturing cost is increased.

On the other hand, the rear power transmission structure of the working vehicle will be described as an example of the maneuvering machine among the working vehicles.

Firstly, the rice paddy machine is constituted by a traveling vehicle, an eating device provided at the rear end of the traveling vehicle, and an engine provided at the front of the traveling vehicle to provide the power necessary for operation of the traveling vehicle and the feeding device do.

The power supplied from the engine is distributed to the power from the transmission to the driving power and the working power. The driving power and the working power from the transmission are transmitted to the front axle case, the rear axle case, and the eating device through the power transmission system.

Particularly, in the rear power transmission structure, the left and right rear wheels are driven through a transmission device for traveling installed in the rear axle case, and the power transmission mechanism for power take- And a power is drawn out to a working machine side such as an electronic (harness).

For example, as disclosed in Korean Patent Laid-Open Publication No. 10-2011-0129378, there is proposed a transmission mechanism for running comprising a combination of bevel gears between an input shaft and a distribution shaft, And a transmission mechanism for power take-off combined with gears are individually constituted.

As described above, the conventional working vehicle has a structure in which the traveling power transmission mechanism and the power transmission power transmission mechanism are separately provided, so that the power transmission structure is extremely complicated, so that the assembling performance is extremely low, This has a disadvantage in that the manufacturing cost is greatly increased.

In addition, due to the structure in which the power transmission mechanism for driving and the power transmission mechanism for power take-off are individually provided, there is a disadvantage that it is very difficult to change or assemble the structure when changing from a general type weaving machine to a working machine attached type weaving machine.

Further, since a separate power take-off unit is provided at the lower part of the rear axle case, there is a drawback in that the work efficiency is reduced due to a large load during the power receiving operation, and moisture can easily penetrate during the power receiving operation.

KR 10-2011-0129378 A (2011.12.01)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a structure in which the power transmitted from an engine can be distributed by a single power transmission mechanism to a driving power of a rear wheel and a working power of a working machine, And it is an object of the present invention to provide a rear power transmission apparatus for a work vehicle which can be constructed more compactly and which can greatly improve the assemblability thereof, as well as facilitates high productivity and uniform quality control.

According to an aspect of the present invention, there is provided a rear power transmission apparatus for a work vehicle,

A rear axle case rotatably installed in the rear wheel drive transmission shaft for rotating the rear wheel axle on both right and left sides thereof;

An input shaft rotatably installed on one side of the rear axle case; And

And a power take-off driving shaft rotatably installed on the other side of the rear axle case,

The power input to the input shaft is transmitted to the rear wheel drive transmission shaft and the power take-off drive shaft together via one transmission mechanism.

Wherein the input shaft and the power take-off driving shaft are disposed opposite to each other with respect to the rear wheel driving electric shafts so that the input shaft, the power take-off driving shaft, and the rear wheel traveling electric shafts intersect each other in the rear axle case,

The transmission mechanism is configured to transmit the power received from the input shaft to the rear wheel drive coaxial shaft and the power take-off drive shaft at a portion where the input shaft, the power take-off drive shaft, and the rear wheel drive transmission shaft intersect each other.

The transmission mechanism includes an input gear provided on an input shaft, a rear wheel drive output gear provided on the middle of a rear wheel drive transmission shaft, and a power take-off output gear provided on the power take-

And the input gear, the rear wheel drive output gear, and the power take-off output gear are coupled to each other.

The rear wheel drive output gear is engaged with the input gear so that their axes intersect with each other, and the power take-off output gear is engaged with the rear wheel drive output gear so that their axes cross each other.

And the axis of the power take-off drive shaft and the axis of the input shaft are positioned on a straight line in a plane.

The rear axle case has a first case portion to which an input shaft is mounted, a second case portion to which the drive shaft for power take-off is mounted, and a third case portion to which the transmission mechanism is mounted,

The first case part, the second case part, and the third case part are formed adjacent to each other inside the rear axle case.

According to the present invention, when the power generated by the engine is input to the input shaft, the power input to the input shaft is distributed to the rear-wheel drive transmission shaft (driving power) and the power withdrawal driving shaft (work power) via one transmission mechanism The present invention relates to a rear power transmission device for a rice-making machine, which is capable of realizing a rear power transmission system and a path more compactly, thereby greatly improving its assemblability and facilitating high productivity and uniform quality control.

According to the present invention, since one transmission mechanism is provided at a portion where the input shaft, the power take-off drive shaft and the rear-wheel drive transmission shaft intersect each other, the power transmission structure to the rear-wheel drive transmission shaft and the power take- Can be implemented very effectively.

According to the present invention, since the transmission mechanism is composed of the input gear, the rear-wheel output gear, and the output gear whose axes are interdigitated to each other, when the power generated by the engine of the vehicle is input to the input gear of the input shaft through the transmission , The power is transmitted to the rear wheel drive transmission shaft and the power take-off drive shaft together by a single transmission mechanism, thereby greatly reducing the power transmission system and the path, thereby realizing a more compact overall structure. There is no need to attach the power take-off case, which can greatly reduce the overall assembly cost and manufacturing cost.

According to the present invention, as the axis of the power take-off drive shaft and the axis of the input shaft are located on a straight line on the plane, the arrangement structure of the transmission mechanism can be made more compact.

According to the present invention, since the mounting layout of the input axle, the drive shaft for power take-off, and the transmission mechanism can be made very compact, the rear axle case greatly improves the assemblability of the rear axle case and facilitates high productivity and uniform quality control There is one advantage.

1 is a perspective view illustrating a rear power transmission apparatus for a work vehicle according to an embodiment of the present invention, as viewed from the front side.
Fig. 2 is an exploded perspective view showing a state in which the rear axle case is separated from the remaining power transmission structure in Fig. 1;
3 is a perspective view showing the power transmission structure of FIG. 2 in detail.
4 is a perspective view illustrating a rear power transmission apparatus for a work vehicle according to an embodiment of the present invention as viewed from the rear side.
Fig. 5 is an exploded perspective view showing a state in which the rear axle case is separated from the remaining power transmission structure in Fig. 4;
Fig. 6 is a perspective view showing the power transmission structure of Fig. 5 in detail.
7 is a right side view of a right side view of a rear power transmission apparatus for a work vehicle according to the present invention.
8 is a cross-sectional view taken along line AA in Fig.
9 is a cross-sectional view taken along line BB in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For reference, the size, line thickness, and the like of the components shown in the drawings referred to in describing the present invention may be somewhat exaggerated for ease of understanding. The terms used in the description of the present invention are defined in consideration of the functions of the present invention, and thus may be changed depending on the user, the intention of the operator, customs, and the like. Therefore, the definition of this term should be based on the contents of this specification as a whole.

1 to 9 are views showing a rear power transmission apparatus for a working vehicle according to an embodiment of the present invention.

1 to 9 refer to the forward direction of the work vehicle, the arrow BW direction refers to the backward direction of the work vehicle, and the arrow RD direction refers to the rightward direction of the work vehicle And the direction of the arrow LD indicates the left direction of the working vehicle. However, it should be understood that the above-described directions are merely for convenience of description, and various modifications may be made depending on the structure and form of the vehicle.

1 to 9, a rear power transmission device for a work vehicle according to the present invention includes a rear axle case 10, an input shaft 21 provided on one side of the rear axle case 10, A drive shaft 30 for power take-off provided on the other side of the rear axle case 10 and a power source for driving the input shaft 21 through a rear wheel drive transmission shaft 22 and a power take- And a transmission mechanism (40) for transmitting the driving force to the drive shaft (30).

The rear axle case 10 is disposed on the rear side of the working vehicle and the rear axle 23 is provided on both right and left sides of the rear axle case 10. [

The input shaft 21 is rotatably installed on one side of the rear axle case 10, and the input shaft 21 is rotatably supported by a bearing or the like. The input shaft 21 is configured to receive the power from the transmission of the working vehicle through the driving drive shaft. Specifically, the input shaft 21 is installed on the front side of the rear axle case 10 and connected to a driving drive shaft extending from the transmission, thereby receiving power from the transmission.

A rear wheel drive transmission shaft 22 is rotatably disposed across the left and right direction in the interior of the rear axle case 10, and left and right ends of the rear axle 22 are provided with right and left rear wheel axles 23 A pair of final gear mechanisms 24 for transmitting power individually and a pair of side clutch mechanisms 24 for interrupting the power transmitted to each of the final gear mechanisms 24 are provided on the right and left sides of the rear wheel drive transmission shaft 22, (25).

On the other hand, the rear-wheel drive transmission shaft 22 may have a structure in which a left transmission shaft and a right transmission shaft are detachably coupled to each other, or may have a single transmission shaft.

The power take-off drive shaft 30 is rotatably installed on the other side of the rear axle case 10, and the power take-out drive shaft 30 is configured to draw power by a working machine such as a harrower.

The power take-off drive shaft 30 is connected to a separate universal power shaft for transmitting power to the working machine side such as a harrow apparatus. A power take-off clutch 35 for interrupting the power take- Respectively.

The power take-off drive shaft 30 is disposed on the opposite side of the input shaft 21 with respect to the rear-wheel drive power transmission shaft 22 so that the input shaft 21 and the power take-off drive shaft 30 intersect with the rear- .

8, the transmission mechanism 40 is configured such that the axis X2 of the input shaft 21, the axis X1 of the power take-off drive shaft 30, and the axis X3 of the rear- The intersection is configured to distribute and deliver the driving power and the working power by transmitting the power received from the input shaft 11 to the rear wheel driving coaxial shaft 12 and the power take-off driving shaft 30. As described above, since the transmission mechanism 40 is provided at the intersection of the respective axes X2, X1, X3 of the input shaft 21, the power take-off drive shaft 30 and the rear-wheel drive power shaft 22, The power transmission to the rear wheel drive transmission shaft 22 and the power take-off drive shaft 30 by one transmission mechanism 40 can be implemented very effectively.

The transmission mechanism 40 includes an input gear 41 provided on the input shaft 21, a rear wheel drive output gear 42 provided in the middle of the rear wheel drive transmission shaft 22, And an output gear 43.

As described above, the transmission mechanism 40 includes the input gear 41, the rear wheel drive output gear 42, and the power take-off output gear 43, which are formed by conical gears and constitute an intermeshed bevel gear combination, The power input to the power take-off drive shaft 21 is transmitted to the rear wheel drive transmission shaft 22 through the rear wheel drive output gear 42 and is transmitted to the power take-off drive shaft 30 through the power take-

Particularly, the rear wheel drive output gear 42 is meshed with the input gear 41 such that the axes X2 and X3 intersect with each other, and the power take-off output gear 43 is engaged with the rear wheel drive output gear 42 The axis lines X3 and X1 intersect with each other. That is, the input gear 41 and the power take-off output gear 43 are configured to be engaged with each other at different positions with respect to the rear wheel drive output gear 42. Thus, after the power is firstly transmitted to the rear wheel drive output gear 42 through the input gear 41, the power is supplied to the power take-off output gear 43 through the rear wheel drive output gear 42, Can be delivered by car.

As described above, in the present invention, when the power generated in the engine of the vehicle is input to the input gear 41 through the transmission, the input power is transmitted to the rear wheel drive transmission shaft 22 and the power take- The power transmission path can be greatly shortened by distributing the power to the drive shaft 30 and the entire structure can be realized more compactly so that there is no need to attach a separate power take-off case to the rear axle case 10, Cost and manufacturing cost can be greatly reduced.

Particularly, since the axis X1 of the power take-off drive shaft 30 and the axis X2 of the input shaft 21 are located on a straight line on the plane as shown in Fig. 8, the arrangement structure of the transmission mechanism 40 is more compact And can be easily implemented.

The rear axle case 10 includes a first case portion 11 on which the input shaft 21 is mounted, a second case portion 12 on which the power take-off driving shaft 30 is mounted, Is mounted on the first case 13 is formed as an identical body.

The first case portion 11, the second case portion 12 and the third case portion 13 are formed adjacent to each other in the rear axle case 10 as shown in Figs. 8 and 9, Therefore, the rear axle case 10 can be configured with a very compact mounting layout of the input shaft 21, the drive shaft 30 for power take-off, and the transmission mechanism 40, thereby greatly improving the assemblability of the rear axle case, Productivity, and uniform quality control.

The first case portion 11 is formed horizontally on the front side of the rear axle case 10 and the input shaft 21 is rotatably mounted on the first case portion 11 through a bearing or the like. The front side mounting opening 16 is formed so as to open forward at the front end of the first case portion 11, that is, at the front side of the rear axle case 10. The front side mounting opening 16 is open through the front side mounting opening 16, Is inserted and mounted.

The rear case 10 is provided at the rear side of the rear case 10 and the rear side mounting opening 15 is formed at the rear side of the rear case 10, And the drive shaft 30 for power take-off is inserted and mounted through the rear-side mounting opening 17. As shown in Fig.

As described above, the second case portion 12, in which the power take-off drive shaft 30 is installed in the rear axle case 10, is formed integrally in the rear axle case 10, The power take-off drive shaft 30 and the power take-off clutch mechanism 35 can be assembled very easily by forming the side attachment openings 17. When the present invention is applied to an agricultural work vehicle such as a rice cooker or the like, It is possible to surely prevent the penetration of the liquid.

On the other hand, when a working machine such as a harrow apparatus is located at the rear lower side of the vehicle, the second case part 12 may be formed to be inclined downward from the rear side of the rear axle case 10, And the rear mounting opening 17 is formed to be opened downward from the rear side of the rear axle case 10. The power take-off driving shaft 30 mounted on the rear axle case 10 is formed to be inclined downward with respect to the input shaft 21,

According to the present invention as described above, the first to third case portions 11, 12, 13 for mounting the input shaft 21, the power take-off driving shaft 30, the transmission mechanism 40, , The assemblability of the input shaft 21, the power take-off driving shaft 30, the transmission mechanism 40 and the like is remarkably improved, and high productivity and uniform quality control are facilitated.

A pair of fourth case portions 14 to which the side clutch mechanism 25 is mounted are symmetrically provided on both left and right ends of the rear axle case 10 and a rear case A pair of rotary supporting bodies 15 for rotatably supporting both ends of the rotary support members 22 are provided. A pair of final gear covers 18 in which the final gear mechanism 24 is disposed can be coupled to both the left and right ends of the rear axle case 10. [

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

10: rear axle case 11: first case part
12: second case part 13: third case part
21: input shaft 22: rear wheel drive coaxial
30: Power take-off drive shaft 40:
41: input gear 42: rear wheel drive output gear
43: Output gear for power take-off

Claims (6)

A rear axle case rotatably installed in the rear axle to rotate the rear axles on both sides of the rear axle;
An input shaft rotatably installed on one side of the rear axle case; And
And a power take-off driving shaft rotatably installed on the other side of the rear axle case,
Wherein the power input to the input shaft is distributed to the rear wheel drive transmission shaft and the power take-off drive shaft by one transmission mechanism. The method according to claim 1,
Wherein the input shaft and the power take-off driving shaft are disposed opposite to each other with respect to the rear wheel driving electric shafts so that the input shaft, the power take-off driving shaft, and the rear wheel traveling electric shafts intersect each other in the rear axle case,
Wherein the transmission mechanism is configured to transmit the power transmitted from the input shaft to the rear wheel drive coaxial shaft and the power take-off drive shaft at a portion where the input shaft, the power take-off drive shaft and the rear wheel drive transmission shaft cross each other, Device. The method of claim 2,
The transmission mechanism includes an input gear provided on an input shaft, a rear wheel drive output gear provided on the middle of a rear wheel drive transmission shaft, and a power take-off output gear provided on the power take-
Wherein the input gear, the rear wheel drive output gear, and the power take-off output gear are meshed with each other. The method of claim 3,
Wherein the rear wheel drive output gear is engaged with the input gear so that their axes intersect with each other, and the power take-off output gear is engaged with the rear wheel drive output gear so that their axes cross each other. Power transmission device. The method of claim 2,
Wherein the axis of the power take-off drive shaft and the axis of the input shaft are positioned on a straight line in a plane. The method according to claim 1,
The rear axle case has a first case portion to which an input shaft is mounted, a second case portion to which the drive shaft for power take-off is mounted, and a third case portion to which the transmission mechanism is mounted,
Wherein the first case portion, the second case portion, and the third case portion are formed adjacent to each other inside the rear axle case.

KR1020140165039A 2014-11-25 2014-11-25 Rear power trasnmission apparatus for working vehicle KR20160062769A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110301197A (en) * 2018-03-20 2019-10-08 株式会社久保田 Working rig including working in paddy field
KR102531963B1 (en) * 2022-10-18 2023-05-12 현대농기계(주) Four-wheel drive passenger management system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110129378A (en) 2009-03-16 2011-12-01 얀마 가부시키가이샤 Rice planting machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110129378A (en) 2009-03-16 2011-12-01 얀마 가부시키가이샤 Rice planting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110301197A (en) * 2018-03-20 2019-10-08 株式会社久保田 Working rig including working in paddy field
KR102531963B1 (en) * 2022-10-18 2023-05-12 현대농기계(주) Four-wheel drive passenger management system

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