JP2002034310A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a walking seeding transplanter which can prevent the adjustment of a width between a pair of ridge guide rollers from being forgotten, when the width of a ridge is changed and further when a width between travel wheels is adjusted to the changed width of the ridge. SOLUTION: This seedling transplanter characterized by disposing a pair of right and left travel wheels 3 which travel in valleys on both the sides of a ridge in such a posture as to step over the ridge of a field, and front wheel support frames 17 which comprise outers and inners, respectively, and can change the lateral positions of a pair of the travel wheels 3, and further disposing ridge guide rollers 35 contacting with the slopes of the ridge on the front wheel support frames 17, respectively. When the width of the ridge is different or when the lateral position for planting seedlings in the ridge in the transplanter travel direction is changed, the lateral positions of the ridge guide rollers 35 can thereby be changed with the changes in the lateral positions of the travel wheels. Even when the lateral changes of the ridge guide rollers 35 are especially not carried out, the workability of the seedling transplanter can hence be improved in comparison with that of a conventional walking seedling transplanter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walking-type tobacco or vegetable seedling transplanter for moving an airframe following a ridge.

[0002]

2. Description of the Related Art A pair of left and right wheels straddling a ridge are provided at a front portion of a fuselage, and a steering handle is provided at a rear portion of the fuselage. A driver operates the handle while walking while following the progress of the fuselage. Walking-type seedling transplanters are known.

[0003] In the above-mentioned seedling transplanting machine, there is a transplanting machine having a configuration in which a pair of running wheels is provided on the left and right sides in the traveling direction of the body, and a ridge guide roller is provided in front of the pair of running wheels in contact with a ridge inclined surface. . The ridge guide roller in contact with the ridge inclined surface has a function of guiding the traveling wheel in the ridge direction even when the ridge direction is bent.

[0004]

In the conventional walking type seedling transplanter described above, when the width of the ridge changes, the width of a pair of running wheels running in the valley of the ridge must be changed. However, when the planting operation is to be started by changing the width of the pair of traveling wheels, it is common to forget to match the width of the pair of ridge guide rollers with the changed width of the ridge.

Therefore, an object of the present invention is to provide a walking type in which the width of the ridges is changed and the width of the pair of ridge guide rollers is also adjusted to the changed ridge width when the width of the traveling wheel is adjusted to the changed ridge width. To provide a seedling transplanter.

[0006]

In order to solve the above problems, the present invention has the following arrangement. That is, a pair of left and right traveling wheels (3, 3) traveling across the ridge of the ridge so as to straddle the ridge of the field, and an installation position changing mechanism capable of changing the left and right positions of the pair of traveling wheels (3, 3). This is a seedling transplanter provided with a (front wheel support frame 17) and a ridge guide (ridge guide rollers 35, 35) that comes into contact with the ridge inclined surface on the installation position changing mechanism (front wheel support frame 17).

[0007]

When the ridge width is different or when it is desired to change the planting position of the ridges in the left-right direction in the direction of movement of the transplanter with respect to the ridges, the left-right position of the ridge guide is also changed with the change of the left-right position of the running wheel. Therefore, it is not necessary to specifically change the left and right positions of the ridge guide, and the workability is improved as compared with the conventional walking-type seedling transplanter.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The side view of FIG. 1 and the plan view of FIG. 2 are general structural views of a vegetable transplanter as an example of a seedling transplanter of the present invention. This vegetable transplanter 1 has traveling wheels 2, 2, 3, 3
A configuration in which a vegetable pot seedling is planted on the upper surface of the ridge U by the planting section 1b including the seedling supply device 4, the seedling planting device 5, and the like while the body is advanced while straddling the ridge U by the traveling portion 1a having the It has become. The operator appropriately steers the aircraft with the steering handle 6 provided at the rear of the aircraft, and supplies seedlings to the seedling supply device 4 while walking on the side of the aircraft during the planting operation. Hereinafter, the configuration of each unit will be described.

The traveling section 1a will be described. An engine 9 is arranged in front of the traveling section transmission case 7.
A hydraulic pump 10 driven by the power of the engine 9 is provided on a left side surface of the engine 9. Engine 9
Is provided with a fuel tank 11 and the like, and a bonnet 12 covers the upper side. Traveling part transmission case 7
Left and right long connecting frames 13 on the back of
The front end of a main frame 14 that connects the traveling portion 1a and the steering handle 6 is fixedly connected to the right end of the rear surface of the connection frame. The main frame 14 extends rearward through the right side in plan view of the planting portion 1b,
It is bent obliquely upward on the way and extends as it is to the rear position of the planting portion 1b. The steering handle 6 is fixedly attached to the rear end.

[0010] Traveling transmission cases 16, 1 are attached to rotating cylinder portions 15, 15 protruding from the left and right side surfaces of the traveling portion transmission case 7, respectively.
6 are integrally attached, and the traveling transmission cases 16, 1
The rear wheels 2, 2, which are driving wheels, are pivotally supported at the tip of the wheel 6. The front wheel support frame 1 is provided below the engine 9 so as to be swingable about a pivot shaft 17a in the front-rear direction.
Front wheel support rods 18 are attached to the left and right ends of the 7 so as to be adjustable in height, and the front wheels 3, 3 which are driven traveling wheels are pivotally supported at the lower ends of the rods 18, 18.

The traveling section 1a is provided with a body control mechanism for controlling the position of the body by moving the rear wheels 2, 2 up and down with respect to the body. In this machine control mechanism, the grounding plate 28 detects the upper surface of the ridge and controls the operation of the elevating cylinder 21 in the hydraulic valve unit 20 via the sensing link mechanism 29. The hydraulic valve unit 20 disposed on the traveling section transmission case 7 is provided with an elevating cylinder 21 toward the rear thereof.
A balance rod 22 is attached to the tip of 1a so as to be rotatable about a vertical axis. The piston rod 21a
It slides along a guide shaft 24 supported by the hydraulic valve unit 20 and an attachment member 23 attached to the main frame 14. The swing arm 2 fixed to the left and right ends of the balance rod 22 and the rotating cylinders 15, 15.
5 and 25 are connected via connecting rods 26 and 26. The left connecting rod 26 has a rolling cylinder 27 incorporated therein, and its length can be changed by expanding and contracting the cylinder 27.

The lifting cylinder 21 and the rolling cylinder 27 are operated by controlling a hydraulic oil supplied from the hydraulic pump 10 by a control valve (not shown) in the hydraulic valve unit 20. When the elevating cylinder 21 is extended and retracted, the balance rod 22 moves back and forth, and the swing arm 25 is connected to the elevating cylinder 21. The rear wheels 2, 2 move up and down in the same direction by the same amount with respect to the aircraft, and the aircraft is moved up and down. When the rolling cylinder 27 is extended and contracted, the right and left rear wheels 2 and 2 move up and down with respect to the body by the same amount in the opposite direction, and the body is inclined right and left.

Next, the configuration of the planting section 1b will be described. The lower part of the planting part transmission case 30 transmitted from the traveling part transmission case 7 is fixed to the upper surface of the connecting frame 13,
The base of the first planting transmission case 31 is fixed to the upper part of the planting part transmission case 30, and the base of the second planting transmission case 32 is further fixed to the tip of the first planting transmission case 31. . The first planting transmission case 31 and the second planting transmission case 32 are connected to an operation mechanism of the seedling planting device 5 described later. The seedling planting tool 60 described later of the seedling planting device 5 is located behind the traveling section 1a. Further, a seedling mounting table 55 described below is attached to the upper frame 34 having the base fixed to the planting section transmission case 30, the seedling supply device 4 is disposed behind the seedling mounting table 55, and the seedling supply device 4 and the seedling mounting The stand 55 is arranged so as to be located above the seedling attachment 60.

As shown in FIG. 3, the input shaft 30a of the planting section transmission case 30 projects forward from the lower end of the case 30.
By being inserted into the TO take-out part 7a, it is operatively connected to a shaft (not shown) in the PTO take-out part 7a on the traveling unit side. In addition, the planting section mission case 30
Are detachably attached to the connection frame 13 by bolts 38,... For this reason, by removing the bolts 38,... And pulling out the input shaft 31a from the PTO take-out part 7a, the planting part 1b can be removed from the traveling part 1a together with the planting part 1b, so that the maintenance of the planting part 1b can be easily performed.

In a side view, the planting section transmission case 30 is provided rearward and upward from the connecting frame 13, and the first planting transmission case 31 is connected to the planting section transmission case 3.
The second planting transmission case 32 is provided horizontally downward from the lower end of the first planting transmission case 31. With this configuration,
A space for the balance rod 22 to move is secured below the second planting transmission case 32 without making the longitudinal length of the body longer than necessary.

Further, in plan view, the planting section transmission case 30 is fixed to the right end of the connecting frame 13 and is formed between the elevating cylinder 21, the balance rod 22 and the right connecting rod 26. It extends upward through the right space of the mechanism. And the first planting transmission case 3
Reference numeral 1 denotes a left side of the planting section transmission case 30, and a second planting transmission case 32 is further left side of the first planting transmission case 31. Since the right space portion is wider than the left space portion by the amount that the rolling cylinder 27 is not provided, it is preferable to arrange the planting section transmission case 30 on the right side.

By arranging the planting section transmission case 30, the first planting transmission case 31, and the second planting transmission case 32 separately on the left and right, the weight balance on the left and right is improved.

As shown in FIG. 4, the present embodiment is provided with mounting shafts for the ridge guide rollers 35, 35 on a front wheel supporting frame 17 having front wheel supporting rods 18, 18 which are shafts for adjusting the tread of the front wheel mounted on both ends. There is a feature of the form.

A pair of ridge guide rollers 35 are attached diagonally right and left so as to abut vertically on the slope of the ridge. When transplanting seedlings, the front wheels 3 and 3 (also the rear wheels 2 and 2) are attached to the seedlings. Ridges, and ridge guide rollers 35,
35 along both sides of the ridge. Then, the body is advanced by rotating the rear wheels 2 and 2.

When the ridge is bent, the traveling direction of the machine is changed by pushing the ridge guide rollers 35, 35 rotating inside the front wheels 3, 3 against the slope of the ridge. By this operation, the aircraft follows the ridge and advances.

The ridge guide rollers 35, 35 are rotatably attached to the tips of the ridge guide roller support arms 36, 36 via roller rotation shaft support members 37, 37 having a U-shaped cross section. The ridge guide roller support arms 36, 36 are composed of base side outer arms 36a, 36a and distal end side inner arms 36b, 36b.
Since the mounting angles 6a, 36a and the inner arms 36b, 36b can be fixed by changing the mounting angle with the set bolts 38, 38, the roller surfaces of the ridge guide rollers 35, 35 can be brought into contact with the normal to the inclined surface of the ridge.

Outer arm 17 of front wheel support arm 17
b and the inner arms 17c, 17c are attached to each other by pins 17d, 17e (pins 17e are not shown) in the front-rear direction in FIG.

A plurality of holes (not shown) into which the pins 17d and 17e are inserted are arranged on the inner arms 17c and 17c, and the holes into which the pins 17d and 17e are inserted are selected. The tread of the front wheels 3, 3 is determined.

The base of the outer arm 36a of the ridge guide roller support arm 36 is externally inserted into the inner arm 17c of the front wheel support arm 17 closer to the front wheel support rod 18 than the outer arm 17b.
The base of 6a can be fixed to the inner arms 17c, 17c by changing the mounting angle with set bolts 38.

Therefore, when setting the outer arm 17b of the front wheel support arm 17 and the inner arms 17c, 17c at both ends according to the width of the ridge U, the ridge guide roller 3
5 and 35 also move at the same time, so the front wheel support frame 17
We will not forget to adjust the ridge width of the ridge.

With the simple structure for mounting the ridge guide rollers 35, 35 shown in FIG. 4, the mounting position of the ridge guide rollers 35, 35 can be freely adjusted according to the size of the ridge.

As shown in FIG. 5, the ridge guide roller 35 is attached to the tip of a ridge guide roller support arm 36 via a roller rotation shaft support member 37 having a U-shaped cross section. Is fixed to the distal end of the ridge guide roller support arm 36 via the mounting piece 39. The feature of the configuration shown in FIG. 5 lies in the semicircular mounting piece 39, which joins the ridge guide roller support arm 36 and the roller rotating shaft support member 37 via a pin 39a provided at the center thereof, and The piece 39 is provided with a pair of elongated holes 39b, 39b along a semicircular curved surface at symmetrical positions with respect to the pin 39a, and penetrates the elongated holes 39b, 39b to form a semicircular shape with bolts 39c. Mounting piece 39 and roller rotating shaft support member 3
7 is fixed.

In the case of the mounting structure of the ridge guide roller 35 as shown in FIG. 5, the bolt 39c fixed to one of the long holes 39b is removed, and the semicircular mounting piece 3 is centered on the pin 39a.
9 is rotated by 180 °, and the ridge guide roller support arm 36 and the roller rotation shaft support member 37 are fixed via the bolt 39c transferred to the other long hole 39b of the semicircular attachment piece 39, and the mounting structure shown in FIG. Is a mirror-symmetric ridge guide roller 35
Is obtained, and it is not necessary to manufacture a mounting structure for the left and right ridge guide rollers 35 separately.

Although not shown, by adopting a configuration in which the position of the pin 39a is shifted from the center of the semicircular mounting piece 39, the semicircular mounting piece 39 is centered on the pin 39a. After rotating by 180 °, the semicircular mounting piece 39
When the ridge guide roller support arm 36 and the roller rotation shaft support member 37 are fixed through the long hole 39b of FIG.
As shown in (b), a configuration in which the height of the ridge guide roller 35 relative to the ridge U is obtained, and the adaptability of the ridge guide roller 35 to the ridge U is expanded.

When the ridge guide roller 35 is configured as shown in FIG. 7A, the ridge guide roller 35 is formed into various ridge shapes.
Can be matched. The ridge guide roller 35 is attached to the tip of the ridge guide roller support arm 36 via a roller rotation shaft support member 37 having a U-shaped cross section. The roller rotation shaft support member 37 is fixed to the tip of the ridge guide roller support arm 36. The mounting piece 39 is joined to the ridge guide roller support arm 36 so as to be rotatable about a pin 39a provided at the center of the mounting piece 39. Since the mounting piece 39 has an elongated hole 39b,
The mounting angle between the extending direction of the ridge guide roller support arm 36 and the axial direction of the ridge guide roller 35 is adjusted by fixing the mounting position of the mounting piece 39 and the roller rotating shaft support member 37 with a bolt 39c penetrating through the b. Can be changed.

With the above configuration, the height H in the height direction contacting the ridge side surface of the ridge guide roller 35 and the length L in the width direction are shown in FIG.
As shown in (b), various heights H1, H2 and lengths L1,
L2 is obtained. When the inclined surface of the ridge is flat and cleanly formed, the ridge guide roller 35 is moved to the height H1,
The airframe is stably guided to the ridge with the length L1. Conversely, when the inclined surface of the ridge has irregularities in the vertical direction (not well-formed), the ridge guide roller 3
5 is set to a height H2 and a length L2 so that the aircraft does not needlessly steer. Even when the ridge is low, the ridge guide roller 35 is set to the height H2 and the length L2 so that the machine body is accurately guided to the ridge. Thus, applicability to the shape of the ridge U is expanded.

Further, as shown in FIG.
A structure may be adopted in which a pair of ridge guide roller support arms 36, 36 with the tips 5, 35 attached to the ends thereof intersect, and the intersection angle can be adjusted with the grip bolt 43. A pair of ridge guide roller support arms 36 shown in FIG. 8 includes an inner 36b on the ridge guide roller 35 side, an outer 36a on the opposite side, and an elongated hole 36 fixedly provided on an end side of the outer 36a.
It consists of a plate piece 36c with d.

In the example shown in FIG. 8, the pair of ridge guide roller support arms 36 intersect at the elongated holes 36d of the plate pieces 36c, and the intersection angle is adjusted by grip bolts 43 penetrating the elongated holes 36d. And fix it. The crossing angles of the arms 36, 36 fixed by the grip bolts 43 are provided through the reinforcing plates 44, 44 provided on the pair of ridge guide roller support arms 36, 36 and the elongated holes 44a, 44a thereof. It is also held by the grip bolt 45. The ridge guide rollers 3 of the pair of ridge guide roller support arms 36, 36
The ends of the ridge guide rollers 35, 35 are rotatably and telescopically attached via ridge guide roller support plates 36e, 36e fixed to the ridge guide rollers 35, 35, respectively.

For this reason, the mounting structure of the ridge guide roller 36 shown in FIG. 8 allows the left and right ridge guide rollers 35 to be loosened by loosening the grip bolt 43 and changing the intersection position of the left and right ridge guide roller support arms 36, 36. Can be adjusted at the same time, so that the angles and positions of the left and right ridge guide rollers 35, 35 can be maintained symmetrically, and the ridge shape,
The ridge guide roller 35 can be easily adapted according to the size.

Further, as shown in FIG.
Of the front wheel support arm 1 by the plurality of mounting holes 18a
7, the height of the ridge guide roller 35 is changed with the vertical adjustment of the front wheel 3, and the height of the ridge guide roller 35 can be easily adjusted without forgetting to adjust the height. I can do it. As a result, ridge followability is improved,
As shown in FIG. 10, which can simplify the vertical adjustment mechanism of the ridge guide, a ridge guide roller 35 that performs ridge guidance may be configured to move up and down in conjunction with the elevating and lowering chain case 16 (FIG. 1). In the configuration shown in FIG. 10, the ridge guide roller 35 is fixed to the tip of a ridge guide roller support arm 36 rotatably attached to the front wheel support frame 17 of the front wheel support rods 18, 18.

The ridge guide roller support arm 36 is made up of an outer arm 36a and an inner arm 36b. The outer arm 36a and the inner arm 36b can be fixed at different mounting angles with set bolts 38, so that the tip of the inner arm 36b The ridge guide roller 35 attached to the ridge can be rotatably fixed to the guide roller support arm 36 in accordance with the inclination angle of the inclined surface of the ridge, and can be brought into perpendicular contact with the slope of the ridge. A portion connecting the outer arm 36a to the mounting member 36aa to the front wheel support frame 17 and a rod 48 connecting to the mounting member 16a of the chain case 16 are provided. At both ends of the rod 48, mounting members 36 to the front wheel support frame 17 are formed with U-shaped members 48a in cross section.
aa and the mounting member 16a of the chain case 16 are rotatably connected. The attachment member 16a of the chain case 16 is provided with an elongated hole 48b of the rod 48.

In the ridge guide roller mounting structure shown in FIG. 10, when the seedling transplanter is turned, the handle 6 is lifted and the device in front of the fuselage is lifted sufficiently from the ridge to perform the turning operation. Since the outer arm 36a of the ridge guide roller support arm 36 is pulled upward by the rod 48 and rotates about its base, the ridge guide roller 35 and the ridge guide roller support arm 36 attached to the front of the fuselage move upward. At this time, since the elongated hole 48b is provided in the rod 48 on the side of the chain case 16, the ridge guide roller 3 is delayed behind the start of the upward rotation of the seedling transplanter.
5 moves up.

In a transplanter of the type in which the front wheel 3 is fixed vertically and only the rear wheel 2 moves up and down, if the ridge guide roller 35 is extended forward of the front wheel 3, the ridge guide roller 35 moves downward when the body is lifted. , And it comes to hold down the ridge.
In order to solve this, the configuration shown in FIG. 10 does not interlock during normal use of the seedling transplanter, but when the body is lifted to some extent, the ridge guide rollers 35 automatically lift. In this way, the ridge guide roller 35 does not press the ridge too much during normal operation and does not hinder the turning of the seedling transplanter.

Next, the description of the seedling supply device 4 and the seedling planting device 5 will be simplified. The seedling supply device 4 includes a plurality of seedling supply cups 4.
Turntable 41 in which 0,... Are arranged at equal intervals on the circumference
It has. The turntable 41 is disposed slightly to the right of the left and right centers of the body. Although the detailed description of the turntable 41 is omitted, the turntable 41 is rotatably provided around a central shaft 42 (FIG. 2), and is synchronized with the operation of the seedling planting apparatus 5 by the mounting interval of the seedling supply cups 40. Each of the seedling supply cups 40 is rotated intermittently and a shutter (not shown) at the bottom of each seedling supply cup 40,... Attachment 6
The seedlings to be fed can be planted in the furrow.
The cup-shaped seedling instilling tool 60 moves along the trajectory indicated by the dashed line X in FIG. 1 and opens near the bottom dead center while receiving the seedling from the seedling supply cup 40 near the top dead center. Is planted in the furrow.

On the front side of the turntable 41, a seedling mounting table 55 on which a seedling raising tray is mounted is provided. Seedling stand 55
Is mounted via a mounting rod (not shown) projecting forward from the upper frame 34, and is provided so as to horizontally support the seedling raising tray.

The seedling pots on the seedling raising tray placed on the seedling placing table 55 are manually supplied to the seedling supply cups 40,. When the seedling supply cup 40 containing the seedlings is moved to the seedling supply position by the rotation of the turntable 41, a shutter (not shown) is opened, and the seedlings fall into the seedling planting tool 60 of the seedling planting apparatus 5.

A pair of left and right pressure reduction wheels 80 are provided behind the seedling planting position. This crushing wheel 80, 8
Numeral 0 is attached diagonally so that the lower part is closer to each other, and is urged downward by a weight 81 loosely fitted to a rod 92. After the seedlings have been planted, the soil around the seedling transplanting holes has collapsed to refill the holes and lightly crush the traces.

The rod 92 is attached to the rear end of a swing frame 87 which is vertically swingably supported by a support frame 86 fixed to the front and rear intermediate portion of the main frame 14. When the crushing wheels 80, 80 move up and down with respect to the body according to the unevenness of the ridge surface, the grounding plate 28 detects the upper surface of the ridge by the vertical movement of the crushing wheels 80, 80, and the sensing link mechanism 2
The rotation of the swing frame 87 is transmitted to a lifting hydraulic valve (not shown) in the hydraulic valve unit 20 through the hydraulic cylinder unit 9 via the actuator 9 to operate the lifting cylinder 21 in a direction in which the angle of the swing frame 87 returns to the original position. This controls the vertical movement of the fuselage so that the height from the upper surface of the ridge to the fuselage is kept constant.

Further, a pressure-reducing wheel fixing lever 90 is rotatably supported at the rear portion of the main frame 14, and fixes the pressure-reducing wheels 80, 80 at a position where the pressure-reducing wheels 80, 80 are raised to a non-ground state. is there.

Since the swing frame 87 is arranged on the right side of the body, an operator walking on the left side of the body does not come into contact with the swing frame 87, so that the pressure can be reliably reduced and the body can be raised and lowered. Can be done accurately.

The steering handle 6 has a substantially U-shape in plan view with both ends extending rearward, and grips 6a, 6
a is attached. At the time of turning or traveling on the road, the operator grips the grips 6a, 6a and steers. The steering handle 6 is provided so as to be shifted to the right from the left and right center of the fuselage. Out of the way when doing

Side clutch levers 100, 100 are provided below the grips 6a, 6a. An operation panel 101 is provided at the base of the steering handle 6.
The operation panel 101 includes a seedling supply device 4 and a seedling planting device 5.
There are provided a planting elevating lever 102 for performing an on / off operation of the planting clutch and a lifting / lowering operation of the machine, and a main clutch lever 103 for performing an on / off operation of the main clutch.

In a seedling transplanter in which the front wheel 3 is a driving wheel and the front and rear wheels 3 and 2 are both up and down, the handle 6 is lifted so that the rear wheel 3 is lifted off the field and the body is turned by the front wheel 3. In this type of transplanter, the base side of the ridge guide roller support arm 36 attached to the front of the body body is made rotatable in the vertical direction, and as shown in FIG. The spring 46 is set in advance. The configuration may be such that the handle 6 (FIG. 1) is lifted and the ridge guide roller 35 in front of the machine body is automatically lifted so as not to hinder the turning of the seedling transplanter.

At the time of turning of the seedling transplanter, the handle 6 is lifted and a device or the like in front of the machine body is sufficiently lifted up from the ridge U to perform a turning operation. When the arm 36 is tilted by a certain angle or more, the fulcrum of the spring 46 is exceeded, and the ridge guide roller 35 and its support arm 36 are stored above the ridge U by the spring force. At this time, the ridge guide roller support arm 3
A link 47 extending from the chain case 16 is linked to the upward movement of the chain 6.

After the turning of the seedling transplanter, when the front wheels 3, 3 are raised with respect to the body, the inclination angle of the chain case 16 with respect to the ridge plane changes. When a force for moving the arm 36 downward is applied, and when the arm 36 is tilted by a certain degree or more, the arm 46 exceeds the fulcrum of the spring 46, and the ridge guide roller 35 is set on the ridge by the spring force at the time of work.

[0051]

According to the present invention, the width of the ridge changes, and when the width of the traveling wheel is adjusted to the changed ridge width, the width of the pair of ridge guide rollers is always set to the changed ridge width. High in nature.

[Brief description of the drawings]

FIG. 1 is a side view of a seedling transplanter according to an embodiment of the present invention.

FIG. 2 is a plan view of the seedling transplanter of FIG.

FIG. 3 is a perspective view of a connecting portion of a traveling section and a planting section of the seedling transplanter of FIG. 1;

FIG. 4 is a perspective view of the vicinity of a ridge guide roller of the embodiment of the seedling transplanter of FIG. 1;

FIG. 5 is a perspective view (FIG. 5 (a)) of a ridge guide roller mounting portion of the embodiment of the seedling transplanter of FIG. 1 (FIG. 5 (a)); ).

FIG. 6 is a perspective view of the vicinity of a ridge guide roller of the embodiment of the seedling transplanter of FIG. 1;

FIG. 7 is a perspective view of the vicinity of a ridge guide roller of the embodiment of the seedling transplanter of FIG. 1;

FIG. 8 is a perspective view of the vicinity of a ridge guide roller of the embodiment of the seedling transplanter of FIG. 1;

FIG. 9 is a perspective view of the vicinity of a ridge guide roller of the embodiment of the seedling transplanter of FIG. 1;

FIG. 10 is a perspective view of the vicinity of a ridge guide roller of the embodiment of the seedling transplanter of FIG. 1;

FIG. 11 is a perspective view of the vicinity of a ridge guide roller of an embodiment of a seedling transplanter of a type in which a rear wheel is lifted and turned by a handle by front wheel drive.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Vegetable transplanter 1a Running part 1b Planting part 2 Rear wheel 3 Front wheel 4 Seedling supply device 5 Seedling planting device 6 Steering handle 6a Grip 7 Running part transmission case 7a PTO take-out part 9 Engine 10 Hydraulic pump 11 Fuel tank 12 Bonnet 13 Connection frame 14 Main frame 15 Rotating cylinder 16 Running transmission (chain) case 16a Mounting member 17 Front wheel support frame 17a Pivot shaft 17b Outer arm 17c Inner arm 17d Pin 18 Front wheel support rod 18a Mounting hole 20 Hydraulic valve unit 21 Lifting cylinder 21a Piston rod 22 Balance rod 23 Mounting member 24 Guide shaft 25 Swing arm 26 Connecting rod 27 Rolling cylinder 28 Ground plate 29 Sensing link mechanism 30 Planting section transmission case 30a Input shaft 3 First planted transmission case 32 Second planted transmission case 34 Upper frame 35 Ridge guide roller 36 Ridge guide roller support arm 36aa Mounting member to front wheel support arm 36a Ridge guide roller support outer arm 36b Ridge guide roller support inner arm 36c Plate Piece 36d long hole 36e support plate 37 roller rotating shaft support member 38 set bolt 39 mounting piece 39a pin 39b long hole 39c bolt 43, 45 grip bolt 40 seedling supply cup 41 turntable 42 central axis 44 reinforcing plate 44a long hole 46 spring 47 Link 48 Rod 48a Sectional U-shaped member 48b Elongated hole 55 Seedling platform 60 Seedling attachment 80 Repressor wheel 81 Weight 86 Support frame 87 Swing frame 88 Interlocking mechanism 90 Repressor wheel fixing lever 92 Rod 100 Side clutch lever 101 Operation Channel 102 planting the lift lever 103 main clutch lever

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B62D 51/06 B62D 51/06 B (72) Inventor Makoto Utsuno 1-Yachikura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Technical Department Co., Ltd. BB05 CA09 CA19 CB05 CC05 2B063 AA01 AB02 AB08 BA01 BA30 BB50

Claims (1)

[Claims] 1. A pair of running wheels in a traveling direction traveling in a valley of a ridge so as to straddle a ridge in a field, and an installation position changing mechanism capable of changing the left and right positions of the pair of running wheels. A seedling transplanter characterized in that a ridge guide is provided in the position changing mechanism for contacting the ridge slope.