JP2549880Y2 - Transplant machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transplanter .

[0002]

2. Description of the Related Art In mobile agricultural machines such as transplanters, tillers, mowers, and tillers, conventionally, a pair of left and right transmission cases are pivotally supported on the body so as to swing up and down, and wheels provided at the lower end of each transmission case. In some cases, the transmission case can be adjusted vertically by swinging the transmission case up and down, and a handle is protruded rearward at the rear of the body.

[0003] In this method, the height of the steering wheel is changed by the vertical adjustment of the wheels, so that the operator can adjust the steering wheel to an optimum height when it is not necessary to consider the ground height of the body.

[0004]

[Problems to be solved by the present invention] In the conventional mobile agricultural machine, the handle is attached to the body in a semi-fixed state, so if the wheels are adjusted up and down, the height of the handle changes. Adjusting the wheels to adjust the height of the steering wheel changes accordingly. That is, if the ground height of the body is increased, the height of the steering wheel is also increased. Conversely, if the ground height of the aircraft is reduced, the height of the steering wheel is also reduced. Therefore, if the ground height of the airframe is adjusted, it is necessary to adjust the height of the steering wheel accordingly.

Accordingly, Japanese Utility Model Publication No. 53-9630 and
And Japanese Utility Model Application Laid-Open No. 63-32083.
In addition, the wheel which can be adjusted up and down
The handle is held from the ground point of the wheel even if the
Technology to make the distance to the part height position approximately constant
Yes, according to this, even if the wheel up and down adjustment
Are linked up and down, so that maneuverability is not impaired.

However, while traveling along the ridges,
In transplanting machines that perform planting work, the height of the ridge depends on the crop.
There is a height, and even if the height of this ridge is
If it fluctuated below, it is necessary to carry out planting work accurately
Is difficult, and unlike field paddy machines,
Transplantation failure when running on road with planting work
We needed to be harmless.

The present invention has been made in view of such a conventional problem,
Even if the wheels are adjusted up and down to change the ground height of the aircraft , not only can the handle height be kept substantially constant ,
The relationship between the ridges and the transplant mechanism is constant and reliable
The purpose is to be able to plant in a suitable manner.

[0008]

[MEANS FOR SOLVING THE PROBLEMS] The present invention relates to the left and right front wheels.
And the right and left rear wheels 9
The aircraft 1 traveling along
An implanter comprising a handle 31, wherein the implant mechanism
Front wheel 5 and rear so that 3 is the correct height for ridge A
A wheel lifting device 16 for adjusting the wheel 9 up and down is provided.
The handle from the ground point of the wheel in conjunction with the lifting device 16
Make sure that the distance to the grip height position of 31 is almost constant.
Further, the wheel lifting device 16 is connected to the left and right front wheels 5 and the left
Equipped with interlocking means 30 for moving the right rear wheel 9 up and down in parallel
It is characterized by having.

[0009]

When the left and right rear wheels 9 are adjusted up and down via the transmission case 10, the ground height of the body 1 changes and can be adjusted to the ground height according to the working conditions. At this time, the transmission case 10 and the handle
Since 31 is vertically moved in conjunction, the handle 31 also moves up and down according to the up and down regulation of the rear wheel 9. Accordingly, the steering wheel 31 can be maintained at a substantially constant height irrespective of the ground height of the body 1, and the driving operation is facilitated . On the other hand, move the left and right rear wheels 9 up and down
When adjusted, the left and right front wheels 5 move up and down in parallel.
The body 1 does not tilt and the transplant mechanism provided for the body 1
3 indicates that even if the height of ridge A is high or low,
The relationship is constant.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. The drawings illustrate the implanter. 1 and 2
In FIG. 1, reference numeral 1 denotes an airframe, which is formed in a rectangular frame shape in a plan view. The airframe 1 is provided with necessary mechanisms such as a groove generator 2, a planting disk 3, a compression wheel 4, and the like, that is, a transplanting mechanism 3. I have.

Reference numeral 5 denotes a pair of left and right front wheels, which are arranged in front of the body 1. Each front wheel 5 is connected to a swing arm 7 via a support shaft 6.
Each swing arm 7 is pivotally supported by a front axle 8 laid on the front of the body 1 so as to freely swing up and down. Reference numeral 9 denotes a pair of left and right rear wheels, which are arranged on both sides of a rear portion of the body 1. Each rear wheel 9 is supported at the tip of a transmission case 10 via a rotating shaft 11. It is pivoted freely. A drive shaft 14 is provided in each fixed cylinder 12 so as to protrude left and right from a transmission 13 attached to a rear portion of the body 1. Through each rear wheel 9
The power is transmitted to. Note that the winding transmission mechanism 15 is configured by a sprocket, a chain, and the like.

Numeral 16 denotes a wheel elevating device which adjusts the front wheel 5 and the rear wheel 9 up and down by forward and reverse rotation of a motor 17 mounted on the body 1. As shown in FIG. 3, the wheel elevating device 16 includes a horizontal shaft 19 extending between lower ends of a pair of left and right brackets 18 fixed to the body 1, and levers 20 fixed to both ends of the horizontal shaft 19. Arm 22 pivotally supported on each bracket 18 by a pivot 21, and each arm 22 is connected to each transmission case 10 and lever 20
, A swinging lever 25 fixed to the center of the horizontal shaft 19, and a screw shaft 27 screwed into a female thread portion 26 at the upper end of the swinging lever 25. Are driven forward and reverse by a motor 17. Each swing arm 7 and the transmission case 10 have link portions 28 and 29 projecting upward,
The left and right link portions 28 and 29 are connected by a rod 30 in the front-rear direction as shown in FIG. That is, left and right
The front wheel 5 and the left and right rear wheels 9 move up and down
There is no inclination, and transplantation mechanism 3
Is fixed.

Reference numeral 31 denotes a handle, which is disposed in a pair on the left and right sides above the rear part of the body 1, and a grip portion 32 at the rear end projects rearward from the body 1. The front end of each handle 31 is shown in FIG.
As shown in FIG. 5, the handle shaft 33 is fixed to both ends of the handlebar shaft 33 in the horizontal direction.
Is rotatably supported. Accordingly, each handle 31 is pivotally supported on the body 1 by the handle shaft 33 so as to be vertically movable, and is vertically movable integrally with the left and right.

Each handle 31 is provided with a bracket 35 in the middle, and each transmission case 10 is also provided with a bracket 35 in the middle.
36 are provided. And these brackets 35,36
Are connected by a vertically interlocking rod 37. Each interlocking rod 37 is configured to be freely expandable and contractible by a turnbuckle 38. Therefore, each transmission case 10 and each handle 31
Are linked via a link rod 37 so that the handle 31 moves up and down in conjunction with the vertical movement of the rear wheel 9, and the handle 31 can be adjusted up and down by expansion and contraction of a turnbuckle 38.

An engine 39 transmits power to the transmission 13. In the above configuration, at the time of transplantation, the front wheel 5 and the rear wheel 9 travel while passing through both sides of the ridge A, that is, by the left and right front wheels 5 and the rear wheel 9.
While crossing the ridge A and running in the longitudinal direction.
2. Activate the transplanting mechanism 3 , such as the planting disc 3, the compression ring 4, etc., and transplant the seedlings such as vegetables to the ridge A.

At this time, the front wheel 5 and the rear wheel 9 are adjusted up and down so that the height of the body 1 is determined so that the transplant mechanism has an optimum height with respect to the ridge A. That is, if the motor 17 is rotated forward, the swing lever 25 swings around the horizontal axis 19 in the direction indicated by the arrow a through the female screw portion 26 screwed to the screw shaft 27, so that the The arm 22 rotates around the pivot 21 in the direction indicated by the arrow b, and presses the transmission case 10 downward via the rod 23.
Accordingly, the transmission case 10 rotates downward in the direction indicated by the arrow c around the fixed cylinder 12, and the rear wheel 9 is lowered. When the transmission case 10 rotates, the swing arm 7 rotates downward around the front axle 8 as indicated by the arrow d through the links 29 and 28 and the rod 30, and the front wheel 5 and the rear wheel 9 Go down as well. Accordingly, since the machine body 1 is relatively pushed down, ground clearance from the groove between the ridges A to the machine body 1, for example, it changes from H ₁ to H _2.

On the other hand, if the transmission case 10 rotates as shown by the arrow c, the handle 31 is pulled down via the interlocking rod 37, so that the handle 31 moves downward around the handle shaft 33 as shown by the arrow e. Rotate. Therefore, if the rear wheel 9 is adjusted from the solid line position to the virtual line position, the handle 31 is similarly lowered from the solid line position to the virtual line position. Therefore, the steering wheel 31 is relatively lowered with respect to the fuselage 1 as compared to the case where the fuselage 1 is raised, so that the ground clearance from the groove to the steering wheel 31 can be kept substantially constant, and the driving operation can be performed without difficulty. it can.

That is, the front wheel 5 and the rear wheel 9 are moved up and down.
Then, both wheels 5, 9 move up and down and the body 1 tilts.
The relationship between ridge A and transplantation mechanism 3 is not
Improve and ensure planting. In the embodiment, the wheel 17 is rotated by the motor 17 to move the wheel up and down. However, the invention is not limited thereto, and the swing lever 25 may be operated by a hydraulic cylinder. Also handle 31
May be one in which the left and right sides are integrally connected at the rear end side. Move further
In addition to the walking type, the planting machine may be, for example, a riding type in which an operator sits on a seat at the time of work and the operator gets down and pushes down a handle at the time of turning.

[0019]

According Effect of invention] The present invention, even when adjusting the ground clearance of the machine body 1 in the vertical, high ground handle 31 that is, the wheel
It is possible to keep the distance between the ground contact point and the grip portion height position of the handle 31 substantially constant, and the driving operation can be performed without difficulty. Also, the left and right front wheels 5 are shifted up and down with the left and right rear wheels 9.
Aircraft 1 must be tilted even if ridge A has elevation
The relationship between ridge A and transplantation mechanism 3 is unchanged, and ridge A
Planting work along the road will be accurate, and
It is unlikely to be an obstacle.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is a schematic configuration diagram of a wheel lifting device showing one embodiment of the present invention.

FIG. 4 is an overall schematic diagram showing an embodiment of the present invention.

[Explanation of symbols]

 1 Body 5 Front wheel 7 Swing arm 9 Rear wheel 10 Transmission case 12 Fixed cylinder 16 Wheel elevating device 17 Motor 31 Handle 37 Interlocking rod 38 Turnbuckle

Claims (1)

(57) [Scope of request for utility model registration] 1. The vehicle has left and right front wheels (5) and left and right rear wheels (9).
Machine that runs along its longitudinal direction across the ridge (A)
In the body (1), the transplant mechanism (3) and the handle (31) for the ridge (A)
The transplanting mechanism (3) has an appropriate height with respect to the ridge (A).
Wheel hoist for adjusting the front wheel (5) and rear wheel (9) up and down
The wheel lifting device (16)
From the ground contact point to the grip height position of the handle (31).
The distance is configured to be substantially constant, and
The lowering device (16) moves the left and right front wheels (5) and left and right rear wheels (9) up and down.
It is characterized by having an interlocking means (30) for parallel movement
Transplanting machine.