JP4348502B2 - Traveling transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a traveling type transplanter in which seedlings such as vegetables or leaf tobacco are planted while traveling along the top of the straw in the field while straddling the straw.
[0002]
[Prior art]
In general, in this type of traveling type transplanter, it is necessary to move the traveling body up and down relative to the top surface of the cocoon in order to adjust the depth of seedling planting relative to the top surface of the cocoon. In addition, it is necessary to always run the traveling aircraft along the ridge.
[0003]
Therefore, Japanese Patent Laid-Open No. 9-266708 and Japanese Utility Model Laid-Open No. 10-248319 as prior arts use a pair of left and right rear wheels and a pair of left and right front wheels for supporting the traveling machine body across a saddle. By configuring the vehicle body to be movable up and down with respect to the aircraft body, the traveling aircraft body is moved up and down with respect to the top surface of the kite, while the pair of left and right having an axis line in a substantially vertical direction at a portion in front of the pair of front wheels It is proposed that the guide wheels are provided so that both the guide wheels are brought into contact with the inclined surfaces on the left and right sides of the kite so that the vehicle can travel straight along the kite.
[0004]
[Problems to be solved by the invention]
However, this prior art has the following problems because both guide wheels that contact the left and right inclined surfaces of the saddle are attached to the traveling machine body.
[0005]
That is, when the two guide wheels are mounted on the traveling machine body, when the traveling machine body is moved up and down with respect to the eaves, the two guide wheels attached to the traveling machine body are simultaneously moved up and down. As a result, the positional relationship between the two guide wheels and the heel changes, and the guide wheels dig deeper into or away from the heel. All straight running performances were reduced by the vertical movement of the vehicle.
[0006]
The present invention utilizes this because the positional relationship between the left and right front wheels that support the traveling mechanism in a state straddling the saddle and the saddle is substantially constant regardless of the vertical movement of the traveling aircraft body. Thus, it is a technical object to improve the straight traveling performance along the heel of the traveling machine body.
[0007]
[Means for Solving the Problems]
In order to achieve this technical problem, claim 1 provides:
“While configuring a pair of left and right front wheels and also a pair of left and right rear wheels that support a traveling machine body equipped with a planting device for seedlings against the cocoon in a state of straddling the cocoon, In the traveling type transplanter configured to dispose guide wheels that are in contact with the inclined surfaces on both the left and right sides of the heel with the axis substantially vertical in the front part of the front wheels,
The both guide wheels are mounted on the axles of the front wheels so as to move up and down together with the front wheels. "
It is characterized by that.
[0008]
Next, claim 2
“In the description of claim 1, the two guide wheels are configured to be movable and adjustable in a lateral direction with respect to the traveling of the traveling machine body.”
It is characterized by that.
[0009]
In addition, claim 3
“In the description of claim 1 or 2, the guide wheels are configured such that an inclination of an axis when viewed from the traveling direction of the traveling machine body among the axes of the guide wheels can be adjusted.”
It is characterized by that.
[0010]
Furthermore, claim 4
“In the description of any one of the first to third aspects, the both guide wheels are configured to be movable up and down.”
It is characterized by that.
[0011]
[Operation and effect of the invention]
Both front wheels and both rear wheels that support the traveling machine body provided with the seedling planting device so as to straddle the heel are in contact with a portion of the field scene where the heel rises.
[0012]
Therefore, as described in claim 1, both guide wheels positioned in front of the front wheels and contacting the left and right inclined surfaces of the saddle are arranged on the axles of the front wheels and the front wheels. By mounting the guide wheels so as to move up and down together, the positional relationship of the two guide wheels with respect to the kite can be maintained substantially constant regardless of the vertical movement of the running model with respect to the kite of the running model. It is possible to reliably reduce the straight traveling performance along the kite by the guide wheel from being lowered by the vertical movement of the traveling machine body.
[0013]
Next, according to the second aspect of the present invention, when the width of the flange changes, the guide wheels can be easily adjusted so as to contact the left and right inclined surfaces of the flange. According to the description of claim 1, when the inclination angle of the inclined surfaces on both the left and right sides of the heel changes, it can be easily adjusted so that the entire guide wheels come into contact with the inclined surface. The effect can be achieved more reliably.
[0014]
Furthermore, according to the description of claim 4, since both guide wheels can be brought into contact with any height part of the inclined surfaces on the left and right sides of the saddle, there is an advantage that the effect of claim 1 can be promoted. is there.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0016]
In this figure, reference numeral 1 denotes a traveling machine body on which an engine 2 is mounted. The traveling machine body 1 includes a pair of left and right rear wheels 3 that straddle the fence A in the field, and a pair of left and right front wheels 4 that also straddle the fence A. And is configured to travel forward at an appropriate speed according to the method of arrow B by driving by the engine 2.
[0017]
Further, the traveling machine body 1 is equipped with a seedling planting device 5 having a structure well known in the past in the above-mentioned patent publications. In other words, the planting device 5 includes a cup body 6 that is divided into two parts that move up and down. When the cup body 6 is in the raised position and receives a seedling therein, the cup body 6 moves down and its lower end is 畝 A. Then, the cup body 6 is opened in two and moved up to the original position so that the seedling is planted on the top surface of the heel A.
[0018]
The two rear wheels 3 are attached to the tip of a swing arm 7 whose base ends are pivotally attached to the traveling machine body 1 via axles 8. A power transmission mechanism (not shown) for the wheels 3 is provided.
[0019]
The front wheels 4 are attached to the tip of a swing arm 9 pivotally attached to the traveling machine body 1 at the base end via an axle 10, and the front wheel swing arm 9, The rear wheel swing arm 7 is connected to each other via a rod rod 11 so that when one of them rotates, the other rotates in the same direction.
[0020]
Then, by rotating the swing arm 7 for the rear wheel by an elevating mechanism such as an elevating hydraulic cylinder 12 provided in the traveling machine body 1, the both rear wheels 3 and both front wheels 4 are moved to the traveling machine body 1. The traveling machine body 1 is moved up and down with respect to the top surface of the kite A.
[0021]
Further, as shown in FIG. 2, the traveling machine body 1 is provided with a steering handle 13 extending in the rear direction opposite to the forward direction indicated by the arrow B (in FIG. 1, two steering handles 13 are provided. The operator steers the traveling machine body 1 while walking with the steering handle 13.
[0022]
Further, a laterally facing sheath tube 14 fixed to the base end of the swing arm 7 for both the rear wheels 3 is slidably fitted to a lateral shaft 15 provided on the traveling machine body 1, while being for the both front wheels 4. The lateral sheath tube 16 fixed to the base end of the swing arm 9 is slidably fitted to the horizontal shaft 17 provided in the traveling machine body 1, so that the tread between the two rear wheels 3 and the two front wheels 4 are fitted. The tread between them can be changed, and the tread can be fixed so as not to be adjustable at an arbitrary position.
[0023]
Reference numeral 18 denotes a guide wheel disposed in front of the front wheels 4, and the both guide wheels 18 are rotatable around the vertical axis so as to come into contact with the inclined surfaces A 1 on both the left and right sides of the rod A. As shown below, the vehicle is mounted so as to move up and down together with the front wheels 4 with respect to the axle 8 for the front wheels 4.
[0024]
That is, a forward support rod 19 extending forward from the axle 10 for the front wheels 4 is provided, and the rear end of the forward support rod 19 is pivotally attached to the axle 10 while the forward support rod 19 By connecting the middle part and the traveling machine body 1 through a link 20 having substantially the same length as the swing arm 9 for the front wheels, the link 20, the swing arm 9 and the forward facing are connected. By configuring a parallel link mechanism with the support rod 19, the forward support rod 19 is configured to move up and down together with the front wheel 4 while maintaining the forward posture.
[0025]
The forward-facing support rod 19 and the link 20 are configured so that the laterally pivoting shaft 21 of the link 20 toward the traveling machine body 1 is slidably inserted into a sheath tube 22 provided on the traveling machine body 1, thereby When the tread in 4 is changed, it is configured to move together therewith.
[0026]
On the other hand, a bracket 23 for rotatably supporting the guide wheel 18 is attached to the front end of a support rod 24 by fastening two bolts 25 to the front end of the front support rod 19. By slidably inserting into the boss portion 27 attached by fastening the two bolts 26, both guide wheels 18 can be moved and adjusted laterally with respect to the traveling of the traveling machine body, In the arbitrary movement adjustment position, it can be fixed so that the movement adjustment is impossible by fastening the bolt 28.
[0027]
Further, by making the bolt holes 25 ′ of both bolts 25 for mounting the bracket 23 with respect to the lateral support rods 24 into arc-shaped long groove holes, the both guide wheels 18 are moved along the travel axis of the guide wheels 18. The axis when viewed from the traveling direction of the airframe 1 is configured so that the inclination angle can be adjusted. In addition, the bolt holes 26 ′ of the bolts 26 for mounting the boss portion 27 with respect to the forward support rod 19 are vertically arranged. By making the elongated slot hole to extend, both the guide wheels 18 are configured to be movable up and down.
[0028]
In this configuration, after adjusting both the left and right guide wheels 18 to contact the left and right inclined surfaces A1 of the heel A, the traveling machine body 1 is driven in the direction of arrow B by driving the rear wheels 3 by the engine 2. By traveling forward, seedlings can be planted on the top surface of the heel A at a predetermined interval. During the forward traveling, the left and right guide wheels 18 are in contact with the left and right inclined surfaces A1 of the heel A. By traveling while traveling, the traveling machine body 1 can travel along the ridge A.
[0029]
And the height with respect to the top face of the heel A in the traveling machine body 1, that is, the planting depth of the seedling is adjusted by the vertical movement of the two rear wheels 3 and the two front wheels 4, but the right and left in the heel A As described above, the guide wheels 18 that are in contact with the inclined surfaces A1 on both sides are configured to move up and down together with the front wheels 4 by the parallel link mechanism. Can be maintained substantially constant irrespective of the vertical movement of the traveling machine body 1 with respect to the heel A, so that the straight traveling performance along the heel A by the both guide wheels 18 is the traveling machine body 1. It is possible to reduce the decrease due to the vertical movement of the.
[0030]
When the width of the heel A is changed, the treads of the rear wheels 3 and the front wheels 4 are adjusted accordingly, and the guide wheels 18 are moved laterally by the lateral support rods 24. As a result, adjustment is made so as to contact the inclined surfaces A1 on both the left and right sides of the heel A, and when the inclined angles of the inclined surfaces A1 on both the left and right sides of the heel A are changed, the lateral support rod 24 is used. The inclination angles of the two guide wheels 18 are adjusted by the two bolts 25 for mounting the bracket 23 to the two.
[0031]
Furthermore, the height position at which the two guide wheels 18 are brought into contact with the inclined surface A1 can be arbitrarily set by the bolts 26 for mounting the boss portion 27 on the forward support rod 19.
[Brief description of the drawings]
FIG. 1 is a side view of a transplanter according to an embodiment of the present invention.
2 is a plan view of FIG. 1. FIG.
3 is an enlarged front view taken along line III-III in FIG. 2. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Traveling machine body 2 Engine 3 Rear wheel 4 Front wheel 5 Planting device 7, 9 Swing arm 8 Rear wheel axle 10 Front wheel axle 12 Lifting hydraulic cylinder 18 Guide wheel 19 Forward support rod 23 Bracket 24 Lateral support rod

Claims (4)

While a pair of left and right front wheels and a pair of left and right rear wheels that support a traveling machine body equipped with a seedling planting device for a cocoon straddling the cocoon are configured to be vertically movable with respect to the traveling machine body, In a traveling type transplanter configured to dispose guide wheels that are in contact with the inclined surfaces on both the left and right sides of the heel with the axial line being substantially vertically oriented at the front part of both front wheels,
A traveling transplanter, wherein both guide wheels are mounted on the axles of the front wheels so as to move up and down together with the front wheels. 2. The traveling transplanter according to claim 1, wherein both the guide wheels are configured to be movable and adjustable in a lateral direction with respect to traveling of the traveling machine body. The traveling transplant according to claim 1 or 2, wherein the two guide wheels are configured such that an inclination of an axis of the guide wheels when viewed from a traveling direction of the traveling machine body is adjustable. Machine. The traveling transplanter according to any one of claims 1 to 3, wherein both the guide wheels are configured to be movable up and down.

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