JP2004042827A - Rice planting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow less foot slippage on the surface of a passway when riding on from a ridge between rice fields through the passway. <P>SOLUTION: A seedling rice planting device 2 is connected to the rear part of a wheeled vehicle body 1 and rear wheels 6 of the wheeled vehicle body 1 are supported on a body frame 10 via a swing arm 15 so as to rock up and down around a front supporting point R. The wheeled vehicle body is equipped with a suspension spring 17 for rockingly energizing the swing arm 15 downward and a riding passway 24 at the front part of the wheeled vehicle body 1. The suspension spring 17 is set so that the wheeled vehicle body 1 is kept in frontward-declining attitude when empty. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention connects a seedling planting device to the rear part of the self-propelled vehicle body, and allows the rear wheel of the self-propelled vehicle body to swing up and down around a front fulcrum via a swing arm on a vehicle body frame. The present invention relates to a rice transplanter equipped with a suspension spring that urges the swing arm downward and a passage for getting on and off the front part of the self-propelled body.
[0002]
[Prior art]
In a conventional rice transplanter of this type, the suspension spring is configured so that the self-propelled vehicle body is in a horizontal posture when the self-propelled vehicle body is empty.
[0003]
Further, in this type of conventional rice transplanter, a culm connected to the swing arm connected to an end of a suspension spring is pivotally connected to a connection shaft connected to the swing arm via a bracket.
[0004]
Further, in this type of rice transplanter, a chain case in which a transmission chain to the rear wheel and a tighter acting on the transmission chain are provided as the swing arm is often provided. A member was attached to support the tighter.
[0005]
[Problems to be solved by the invention]
However, the conventional technique has the following disadvantages.
[0006]
When the self-propelled body is in the horizontal position in an empty state, the road surface of the passage is in a horizontal position in the empty state, so that water easily accumulates on the road surface of the passage due to rainfall or car washing, and as a result, the passage from the ridges When riding through, it is easy to slide your feet.
[0007]
When the connecting shaft is attached to the chain case via the bracket, the bracket is required, which has led to an increase in cost due to an increase in the number of assembling steps.
[0008]
When a support member is attached to the chain case to support the tighter, the support member needs to be assembled, so that the number of assembling steps is increased and the cost is increased.
[0009]
An object of the present invention is to eliminate the above-mentioned conventional disadvantages.
[0010]
[Means for Solving the Problems]
The features, functions and effects of the rice transplanter according to the first aspect of the present invention are as follows.
[0011]
〔Characteristic〕
A seedling planting device is connected to the rear part of the self-propelled body, and the rear wheel of the self-propelled body is supported on the body frame via a swing arm so as to be able to swing up and down around a front fulcrum. A rice transplanter equipped with a suspension spring that oscillates downward and a passage for getting on and off with respect to a front portion of the self-propelled body, wherein the self-propelled body moves forward when the self-propelled body is empty. The point is that the suspension spring is set and configured so as to be lowered.
[0012]
[Action]
The suspension spring is set so that the self-propelled vehicle body in the empty state has a forward-downward posture.In the empty state, the road surface of the passage has a forward-downward inclined posture, and when raining, car washing, and from the road surface of the passage, It is possible to discharge water downward, and it is possible to reduce accumulation of water on the road surface.
[0013]
〔effect〕
Therefore, when riding through the passage from the ridge, it is possible to reduce slipping on the road surface of the passage.
[0014]
The features, functions and effects of the rice transplanter according to the second aspect of the present invention are as follows.
[0015]
〔Characteristic〕
A seedling planting device is connected to the rear part of the self-propelled body, and the rear wheel of the self-propelled body is supported on the body frame via a swing arm so as to be able to swing up and down around a front fulcrum. A rice transplanter equipped with a suspension spring that oscillates downward and a passage for getting on and off the front part of a self-propelled vehicle body, wherein a culm connected to the swing arm connected to an end of the suspension spring. Is pivotally connected to a connecting shaft directly connected to the swing arm.
[0016]
[Action]
Since the connecting shaft for pivotally connecting the connecting culm is directly connected to the swing arm, a bracket for connecting the connecting shaft to the swing arm is unnecessary.
[0017]
〔effect〕
Therefore, since the labor for mounting the bracket is not required, the number of assembling steps can be reduced, and the cost can be reduced.
[0018]
The features, functions and effects of the rice transplanter according to the third aspect of the present invention are as follows.
[0019]
〔Characteristic〕
A seedling planting device is connected to the rear part of the self-propelled body, and the rear wheel of the self-propelled body is supported on the body frame via a swing arm so as to be able to swing up and down around a front fulcrum. A rice transplanter equipped with a suspension spring that urges downward to swing and a passage for getting on and off with respect to a front portion of a self-propelled vehicle body, wherein the transmission chain to the rear wheel and the transmission chain as the swing arm are provided. The present invention is characterized in that a chain case is provided in which a tighter acting inside is mounted, and a support member for the tighter is formed integrally with the chain case.
[0020]
[Action]
Since the support member is formed integrally with the chain case to support the tighter, it is not necessary to attach the support member to the chain case.
[0021]
〔effect〕
Therefore, it has become possible to reduce costs by reducing the number of assembly steps.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
The rice transplanter is a riding type, and as shown in FIGS. 1 and 2, a seedling planting device 2 is connected to a rear portion of a self-propelled body 1 via a link mechanism 3 so as to be able to move up and down. A lift cylinder 4 using a hydraulic cylinder for raising the planting device 2 and lowering the seedling planting device 2 by weight with drainage is provided.
[0023]
As shown in FIG. 3, the self-propelled vehicle body 1 includes a pair of left and right driving front wheels 5 for steering and a pair of left and right driving rear wheels 6, and has a driving unit 7 and an operation for the driving front wheels 5 at the front. Steering wheel 8 is arranged, and a driver's seat 9 is arranged at the rear. As shown in FIG. 4, the body frame 10 of the self-propelled body 1 includes a transmission case 11, an engine mounting frame 12 connected to a front portion thereof, and a rear frame 13 connected to a rear portion of the transmission case 11. Have been.
[0024]
The seedling planting apparatus 2 includes a seedling stand 2A that reciprocates with a predetermined stroke in the left-right direction, a ground float 2B that slides and lands in a field to be planted, and a terrain in conjunction with the movement of the seedling stand 2A. A seedling planting mechanism 2C that circulates between the planted field and the seedling take-out opening of the seedling rest 2A to take out a unit amount of planting seedling from the seedling rest 2A and plant it in the leveling field scene. .
[0025]
The drive front wheel 5 is supported on the transmission case 11 via an axle case 14, and the drive rear wheel 6 is mounted on the transmission case 11 of the body frame 10 around a front fulcrum R via a swing arm 15. It is supported to be able to swing up and down.
[0026]
As shown in FIG. 5, the self-propelled vehicle body 1 includes a boarding step 16 and a suspension spring 17 for urging the swing arm 15 to swing downward.
[0027]
The transmission output of the hydrostatic continuously variable transmission 20 which is operable to switch between forward and reverse, which is driven by the engine 18 constituting the driving unit 7 via the belt transmission 19 together with the transmission, is input to the transmission case 11. The axle case 14 is provided with a transmission mechanism for driving the front wheels 5. As shown in detail in FIGS. 6 and 7, the swing arm 15 is a chain case in which a transmission chain 21 from the transmission case 11 to the driving rear wheel 6 and a tighter 22 acting on the transmission chain 21 are provided. There is a structure that can be split into two parts. In the figure, reference numeral 33 denotes an output shaft from the transmission case 11 to the swing arm 15, and reference numeral 34 denotes a gear train for reduction transmission from the transmission chain 21 to the rear axle 35.
[0028]
The boarding step 16 is a boarding / alighting step for forming a road surface of a boarding / alighting passage 24 with respect to a front portion of the self-propelled vehicle body 1 located on both left and right sides of the driver 7 and the foot 23 of the driver's seat 9. And a part 25.
[0029]
The suspension spring 17 is interposed between each of the pair of left and right rear frames 13 of the body frame 10 and the corresponding swing arm 15 and is housed in a tube. The connecting culm 26 connected to the swing arm 15 connected to the end of the suspension spring 17 is connected to the connecting shaft 27 which is directly connected to the swing arm 15 and which is also used as a case connecting bolt and is connected to a rubber-based buffer bush 36. It is pivotally connected via. The suspension spring 17 is pivotally connected to a shaft 37 extending between the rear frames 13. Reference numeral 38 in the figure denotes a stabilizer that suppresses the relative vertical swing of the left and right swing arms 15 and suppresses the rolling of the self-propelled vehicle body 1 to stabilize.
[0030]
Further, as shown in FIG. 10, the suspension spring 17 is activated when the self-propelled vehicle body 1 is in an empty state, that is, when no driver is on board and the seedling is not placed on the seedling rest 2A. The running body 1, which is actually set so that the riding step 16 is in the forward-downward position, and as shown in FIG. 11, the self-propelled body 1 is in a substantially horizontal position when the driver is in the riding state. It is configured.
[0031]
As shown in FIGS. 8 and 9, a support member 28 of the tighter 22 is formed integrally with the swing arm, that is, the chain case 15.
[0032]
Reference numeral 29 denotes a fertilizer hopper, reference numeral 30 denotes a fertilizer which forms a groove for dispersing fertilizer in a field scene with movement and supplies fertilizer supplied to the groove, and reference numeral 31 denotes a fertilizer fed from the fertilizer hopper 29. Is an electric blower that transfers the airflow to the groove generator 30 via the hose 32.
[0033]
According to the above configuration, when the vehicle is empty, there is no possibility that rainfall or water of the car wash is discharged down from the boarding step 16 and accumulated. In addition, in the state where the tipping person is on board, the self-propelled vehicle body 1 is in a substantially horizontal posture, so that the driver can raise his line of sight and improve straightness without requiring the driver to change his posture to raise his head. is there.
[Brief description of the drawings]
FIG. 1 is a side view. FIG. 2 is a plan view. FIG. 3 is a front view. FIG. 4 is a plan view of a vehicle body frame. FIG. 5 is a front view of a driving rear wheel support portion. FIG. FIG. 7 is a longitudinal sectional side view of a swing arm. FIG. 8 is a transverse sectional view of a swing arm. FIG. 9 is a transverse sectional view of a swing arm. FIG. 10 is a schematic side view of an empty state. FIG. 11 is a schematic side view of a loaded state. Explanation of reference numerals]
DESCRIPTION OF SYMBOLS 1 Self-propelled vehicle body 2 Seedling planting apparatus 6 Rear wheel 15 Swing arm R Front fulcrum 10 Body frame 17 Suspension spring 24 Passage 26 Connecting culm 21 Transmission chain 22 Tightener 28 Support member

Claims (3)

A seedling planting device is connected to the rear part of the self-propelled body, and the rear wheel of the self-propelled body is supported on the body frame via a swing arm so as to be able to swing up and down around a front fulcrum. A rice transplanter equipped with a suspension spring that oscillates downward and a passage for getting on and off the front part of the self-propelled vehicle body, wherein the self-propelled vehicle body moves forward when the self-propelled vehicle body is empty. A rice transplanter, wherein the suspension spring is set and configured to be in a lowered position. A seedling planting device is connected to the rear part of the self-propelled body, and the rear wheel of the self-propelled body is supported on the body frame via a swing arm so as to be able to swing up and down around a front fulcrum. A rice transplanter equipped with a suspension spring that oscillates downward and a passage for getting on and off the front part of a self-propelled vehicle body, wherein a culm connected to the swing arm connected to an end of the suspension spring. Is pivotally connected to a connecting shaft directly connected to the swing arm. A seedling planting device is connected to the rear part of the self-propelled body, and the rear wheel of the self-propelled body is supported on the body frame via a swing arm so as to be able to swing up and down around a front fulcrum. A rice transplanter equipped with a suspension spring that urges downward to swing and a passage for getting on and off with respect to a front portion of a self-propelled vehicle body, wherein the transmission chain to the rear wheel and the transmission chain as the swing arm are provided. A rice transplanter having a chain case in which a tighter acting on the chain is provided, and a support member for the tighter is integrally formed in the chain case.

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