JPH0751860Y2 - Ambulatory transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a walk-behind transplanter mainly for transplanting vegetable seedlings into a field.

(Prior Art) Conventionally, as a walking type transplanter of this type, an engine is mounted on the front side of the machine body, a transplanting device is arranged on the rear side, and a mission case is provided on the rear side of the engine. Axle cases extending rearward are supported on both sides in the vehicle width direction of the lower part in a vertically swingable manner, and a pair of drive wheels are supported on both sides of the fuselage at the rear side of each of the axle cases to support the drive from the engine. A configuration is known in which rotational power is transmitted to each drive wheel via a transmission case and each axle case.

(Problems to be solved by the invention) However, in the above-mentioned conventional walk-behind transplanter, the transmission case is located behind the engine, and its output shaft is located below or behind the input side. Since the axle case is provided between the output shaft of the mission case and the drive wheel, the distance from the drive wheel to the engine is long. In order to balance the front side and the rear side of the machine body having a power transmission system that largely protrudes from the front side with the drive wheel as a fulcrum, an implanting device provided on the rear side of the machine body is located at a position rearward with respect to the drive wheel. There is a problem in that the front-rear length of the entire transplanter becomes long because it needs to be arranged.

The present invention was devised in view of the above problems, and its purpose is to shorten the distance from the front wheel, which is the driving wheel, to the engine, and also to shorten the front-rear length of the entire transplanter, It is an object of the present invention to provide a walk-behind transplanter capable of reducing the lifting load of the steering handle when the steering wheel is lifted with the front wheel serving as a driving wheel as a fulcrum to turn the machine body.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a front wheel (2) in a vehicle body (1) having wheels (2) and (3) at the front and rear.
The engine (4) is mounted on the front side of the engine, and the transplanting device (5) for extracting and transplanting the seedlings supplied from the seedling supply section (51) is arranged on the rear side of the engine (4). The output side of the mission case (7) is directed forward and downward with respect to the input side, and the output side is connected to the front wheel (2).
The drive shaft (41) of the engine (4) and the input shaft (71) of the mission case (7).
A transmission case (8), and an axle case (9) between the output shaft (72) and the front wheel (2) of the transmission case (7), and a drive wheel. The power transmission system to the front wheel (2) is substantially Z-shaped, while the seedling supply section (51) is arranged above the front wheel (2).
In addition, the steering handle (6) is extended from the rear position of the front wheel (2) serving as a drive wheel toward the upper rear.

(Operation) Then, while the front and rear wheels (2) and (3) can maintain the front and rear balance of the airframe (1), the Z-shaped arrangement of the power transmission system to the front wheel (2) serving as a drive wheel can The distance from the engine to the front wheel (2) can be effectively shortened, and the rear transplantation device (5) arranged on the side opposite to the engine with respect to the front wheel (2) can be effectively brought closer to the front wheel (2). And the seedling supply section (5) of the transplanting device (5).
1), that is, the part of the transplanting device (5) that is particularly responsible for the supply of seedlings is located above the front wheels (2), so that the steering handle (6) makes a large business trip behind the fuselage (1). Can be prevented. As a result, as a whole, the front-rear balance of the transplanter can be maintained well, and the front-rear length thereof can be effectively shortened, so that the turning operation can be facilitated, the turning radius can be reduced, and the storage space can be reduced. It can be made smaller.

Moreover, the power transmission system to the front wheels (2) which are the driving wheels is arranged in a Z shape, and the seedling supply section (51) is located above the front wheels (2) on the side carrying the load of the engine and the transmission case. In addition, since the steering wheel (6) is extended from the rear position of the front wheel (2) serving as a driving wheel toward the upper rear, the front-rear balance of the airframe with the front wheel (2) as a fulcrum is improved. The lifting load by the steering handle (6) when the steering handle (6) is lifted around the front wheel (2) to turn the aircraft (1) can be reduced, and the turning performance of the aircraft can be improved. Of.

(Embodiment) The transplanter of the embodiment shown in FIGS. 1 and 2 shows the entire structure of a walk-behind transplanter, in which (1) is a front wheel (2) which is a pair of left and right drive wheels. ) (2) and wheels (3) (3)
A machine body (1) provided with front and rear, wherein an engine (4) is mounted on the front side of the front wheels (2) and (2) of the machine body (1), and on the rear side, a seedling supply section (51). ) Is provided with a transplanting device (5) for taking out and transplanting seedlings supplied from (4) and a steering handle (6), and a transmission case (7) is placed on the input side of the transmission case (7) behind the engine (4). On the other hand, it is provided so as to face forward and downward and the output side is located in front of the axle (21) of the front wheels (2) and (2), and the drive shaft (41) of the engine (4) and the mission case (7) are provided. Transmission case (8) between the input shaft (71)
Also, the output shaft (72) of the mission case (7)
Axle cases (9) and (9) are arranged between the front wheels (2) and the axle (21) of the front wheels (2) and (2), respectively.
The power transmission system for the seedlings is approximately Z-shaped, and the seedling supply section (51)
Is disposed above the front wheel (2) which is a driving wheel.

The transplanting device (5) comprises a seedling supply section (51) for longitudinally feeding a seedling container (a) containing a plurality of pot seedlings backward, and a transfer end side of the seedling supply section (51). Seedling container (a)
A seedling pick-up body (52) having seedling pick-up claws (52a) for picking up pot seedlings one by one, and a lateral feed mechanism (53) in the left-right direction
A seedling taking section (54), a belt type guide carrying section (55) for guiding the pot seedling taken out by the seedling taking-out body (52) to the lower side, and from this guide carrying section (55) The transplant device (5) includes a support frame (58) and a planting part (56) having an openable claw (57) for receiving the pot seedlings guided to fall and transplanting the pot seedlings to a field. It is supported by the airframe (1) via a subframe (59).

Further, the steering handlebar (6) is displaced outward in the vehicle width direction with respect to the central portion of the machine body (1), behind the front wheel (2) serving as a drive wheel, and in the transplantation device. (5)
It is attached so as to extend from one side toward the upper rear.

Further, a pair of left and right rolling wheels (10) (10) are arranged on the rear side of the transplantation device (5). Further, in the embodiment shown in the drawings, the wheels (3) and (3) are provided on the rear side of the machine body at positions facing the front wheels (2) and (2), respectively, from support members provided on the machine body (1). Swing arm extension (31)
The wheels (3) and (3) are interlockingly connected so as to move up and down in synchronization with the up and down movement of the front wheels (2) and (2).

In this case, as shown in FIGS. 1 and 3, the upper portion of the axle case (9) on the output shaft (72) side and the swing arm (31).
Projecting rods (11) (12) project from the upper part of the base side of each of these, and these projecting rods (11) (12) are connected to the first connecting rod (13).
It is connected by (13) so that the swing arm (31) swings vertically in conjunction with the vertical swing of the axle case (9).

A support (18a) for a vehicle height adjusting means (18), which will be described later, has a horizontal axis (14) orthogonal to the longitudinal direction of the machine body (1) in the longitudinal middle portion of the machine body (1). It is rotatably supported via and the projections (15) are provided on both ends of this horizontal axis (14).
The protrusion (15) (16) and the protrusion rods (11) (11) are connected to each other by the second connecting rods (17) (17) by vertically projecting the protrusion (15) with its protrusion direction displaced. The front wheel (2)
Among the (2), for example, in conjunction with the vertical swing of the axle case (9) due to the up-and-down movement of one front wheel (2), the protruding rod (11) on one side and the second connecting rod ( The horizontal axis (14) is rotated through the protrusion (17) and the projection (15), and the horizontal axis (1
By the rotation of 4), the protrusion (16) on the other side and the second connecting rod (1
The other axle case (9) through 7) and the protruding rod (11)
Is vertically swung relative to the one axle case (9), that is, when the one front wheel (2) and the wheel (3) are moved up and down, the other front wheel (2) and the wheel (3) are moved. Are configured to be moved up and down relatively at the same time, and the rolling control of the machine body (1) is performed quickly.

Further, as shown in FIG. 1, the horizontal axis (14) is provided with vehicle height adjusting means (18) for moving and adjusting the horizontal axis (14) in the front-rear direction with respect to the machine body (11). Adjustment means (18)
Is a support body (18a) that supports the horizontal shaft (14) and is movably supported in the machine body (1) in the front-rear direction, and a screw type expansion and contraction connected to the support body (18a). Free rod (18
b) and an operating rod (18) for operating the telescopic rod (18b) to extend and retract.
c) and by adjusting the position of the horizontal shaft (14) toward the front of the machine by the vehicle height adjusting means (18), the both axle cases (9) (9) are simultaneously swung upward. By lowering the vehicle height and adjusting the position of the horizontal axis (14) to the rear side of the machine body, it is possible to simultaneously swing the two axle cases (9) and (9) downward to increase the vehicle height. is doing.

In FIGS. 1 and 2, (19) is a battery provided below the seedling supply section (51) at a position between the front wheels (2) and (2) of the machine body (1). Front wheel (2) that becomes the fulcrum when the vehicle (1) turns by the battery (19)
By arranging in the position between (2), the front wheel (2)
When the steering handle (6) is lifted and turned around the fulcrum (2), the lifting load by the steering handle can be further reduced, and the transmission case (8) is provided in front of the battery (19), and the upper part is also provided. The seedling supply department (5
Due to the location of 1), the battery (19) is protected against external damage.

Further, when the battery (19) is provided at the position between the front wheels (2) and (2), the battery (19) is arranged so as to be lowered to the vicinity of the axle (21) of the front wheels (2) and (2). This is preferable because the center of gravity is lowered and stable running is possible.

The present invention is configured as described above, and during transplantation work, the vehicle body (1) can be stably driven by four-wheel traveling by the front wheels (2) (2) and the wheels (3) (3). Further, since the power transmission system from the engine (4) to the front wheels (2) is arranged in a substantially Z-shape on the front side of the front wheels (2) in the airframe (1), the engine (4) can be connected to the front wheels (2). ) Can be shortened, and the rear implanting device (5) arranged on the engine side of the front wheel (2) can be brought closer to the front wheel (2). Since the seedling supply section (51) in 5) is arranged above the front wheel (2) serving as a drive wheel, it is possible to prevent the seedling supply structure from traveling largely behind the machine body (1).
As a whole, the front-rear length of the transplanter can be shortened while maintaining good front-rear balance.

Moreover, due to the Z-shaped arrangement of the power transmission system to the front wheels (2) serving as the drive wheels and the arrangement of the seedling supply section (51) above the front wheels, the aircraft with the front wheels (2) as the fulcrum Since the front-rear balance can be improved, the lifting load by the steering wheel is reduced when the steering wheel is lifted around the front wheel (2) and the power of the front wheel (2) is used to turn the body (1). Therefore, the turning performance of the machine body can be improved.

(Effect of the Invention) As described above, according to the present invention, the front and rear wheels (2) (3)
The front-to-back balance of the airframe (1) can be maintained by the Z-shaped arrangement of the power transmission system to the front wheels (2) which are drive wheels, and the distance from the engine to the front wheels (2) is effectively made. It can be shortened, the rear transplanting device (5) arranged on the side opposite to the engine with respect to the front wheel (2) can be effectively brought close to the front wheel (2), and the seedling supply section (51) in the transplanting device (5) can be provided. ), That is, the part of the transplanting device (5) that is particularly responsible for the supply of seedlings is located above the front wheels (2), so that the steering handle (6) may travel far behind the fuselage (1). It can be prevented. As a result, as a whole, the front-rear balance of the transplanter can be maintained well, and the front-rear length thereof can be effectively shortened, so that the turning operation can be facilitated, the turning radius can be reduced, and the storage space can be reduced. It can be made smaller.

Moreover, the power transmission system to the front wheels (2) which are the driving wheels is arranged in a Z shape, and the seedling supply section (51) is located above the front wheels (2) on the side carrying the load of the engine and the transmission case. In addition, since the steering wheel (6) is extended from the rear position of the front wheel (2) serving as a driving wheel toward the upper rear, the front-rear balance of the airframe with the front wheel (2) as a fulcrum is improved. The lifting load by the steering handle (6) when the steering handle (6) is lifted around the front wheel (2) to turn the aircraft (1) can be reduced, and the turning performance of the aircraft can be improved. Of.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of a walk-behind transplanter according to the present invention, FIG. 2 is a plan view of the same portion omitted, and FIG. 3 is an explanatory view of an interlocking mechanism for driving front wheels and rear wheels. Is. (1) ... Airframe (2) ... Drive wheel (3) ... Rear wheel (4) ... Engine (5) ... Transplanter (7) ... Mission case (6) ... Steering handle (8) ... Transmission case (9) ... Axle case (41)… Drive shaft (51)… Seedling supply part (71)… Input shaft (72)… Output shaft

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Masatoshi Hisa Asahi 1-32, Chaya-cho, Kita-ku, Osaka City, Osaka Prefecture Yanmar Agricultural Machinery Co., Ltd. (72) Akira Kameda 1-32 Chaya-cho, Kita-ku, Osaka-shi, Osaka No. Yanmar Agricultural Machinery Co., Ltd. (56) References JP 62-275606 (JP, A) JP 60-224405 (JP, A) Actual development 58-70715 (JP, U) Actual 58- 52912 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. An engine (4) is provided in front of a front wheel (2) of an airframe (1) having front and rear wheels (2) and (3).
And the rear side is provided with a transplanting device (5) for taking out and transplanting seedlings supplied from the seedling supply section (51),
Behind the engine (4), a mission case (7)
Its output side is directed forward and downward with respect to the input side, and
The transmission case (8) is provided between the drive shaft (41) of the engine (4) and the input shaft (71) of the mission case (7) by providing the output side in front of the front wheel (2).
Also, the output shaft (72) of the mission case (7)
Axle case (9) is respectively arranged between the front wheel (2) and the front wheel (2), and the power transmission system to the front wheel (2) serving as a drive wheel is substantially Z-shaped, while the seedling supply section ( 51) is located above the front wheels (2) and the steering wheel (6)
The walk-behind transplanter is characterized in that it is extended from the rear position of the front wheel (2) serving as a drive wheel toward the upper rear.