JPH07255234A - Wheel - Google Patents

Abstract

PURPOSE:To enable the sure planting of a seedling in a furrow for transplanting the seedling formed in the top soil surface in a field in advance of the planting of the seedling in carrying out the planting operations of the seedling by using a transplanter for non-tilled transplantation. CONSTITUTION:This wheel is constituted by forming a recessed groove 135 in the circumferential direction in the central part in the shaft center direction of the outer peripheral surface and capable of fitting stubbles into the recessed groove 135 in performing the seedling planting operations so as to maintain the forward direction of the machine body constant without shifting the wheel right and left when attached as a mobile wheel of a transplanter for non-tilled transplantation thereto.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel suitable for a traveling wheel for a no-tillage transplanter for transplanting seedlings into a field that is not tilled.

[0002]

2. Description of the Related Art Recently, attention has been focused on a rice cultivation method in which uncultivated fields are filled with water to plant rice seedlings and the seedlings are subjected to severe growth conditions to grow robust crops that can respond to changes in the environment. Has been done. Since the topsoil surface of a field that is not tilled is hard, the rice transplanter used for this no-till transplantation is
A groove for seedling transplantation is formed prior to planting seedlings by a grooving device such as a rotating disk, and seedlings are planted in the groove by a planting device.

[0003]

In the above-mentioned method of rice cultivation for non-till transplantation, since the seedlings are planted in the field without any treatment such as plowing, the stumps of the previous cultivation remain in the field. Therefore, when planting rice, seedlings must be planted between the stumps. If you try to plant seedlings between the stumps, the running wheels of the rice transplanter will pass over the stumps. Then,
There was a problem that the direction of movement of the aircraft was easily deviated when the wheels climbed up and down the stump, and the seedlings could not be planted properly in the grooves for transplantation, resulting in defective seedlings.

[0004]

In order to solve the above-mentioned problems, the present invention provides the following wheels suitable for running wheels of a no-tillage transplanter. That is, the wheel according to the present invention is characterized in that a concave groove is formed in the circumferential direction at the central portion of the outer peripheral surface in the axial direction.

[0005]

[Function] When the wheel passes over the stump, the stump fits into the circumferential groove formed in the axially central portion of the wheel outer peripheral surface, so that the wheel is less likely to shift left and right,
The straightness of the aircraft is maintained. Therefore, the seedlings are accurately planted in the seedling transplant groove.

[0006]

EXAMPLES The present invention will be specifically described below with reference to some examples.

The wheel A shown in FIG. 1 is an endless annular rim 1.
Two tires 131 (1, 2) formed by molding rubber into a substantially circular cross-section around 30 are arranged side by side so as to be in contact with each other, and each tire 131 (1, 2) is attached to the axle boss 1
32 has spokes 133, ... Therefore, two wheels alone, which stand alone as wheels, are arranged side by side, and the tires 131 (1, 2) of both wheels are in contact with each other to contact the ground.
A concave groove 135 is formed between (1, 2) in the circumferential direction. Although this wheel A is excellent in strength, the shape of the boss is slightly complicated, and the cost is slightly high.

In the wheel B shown in FIG. 2, two wheel units are arranged side by side with a space therebetween, and tires 131, 1 of both wheel units are arranged.
31 is connected by a connecting plate 136 made of an elastic material such as rubber. The connecting plate 136 has a shape in which a concave groove 135a is circumferentially formed in the central portion in the axial direction, and the two-step structure concave groove 135 is formed between the tires 131 (1, 2). There is. In this wheel B, the width of the concave groove can be widened, but the boss shape is complicated and the cost becomes high.

In the wheel C shown in FIG. 3, two rims 130 (1, 2) arranged on the left and right are fixed to the axle boss 132 by a common spoke 133, ..., Both rims 130 (1, 2) and the spoke 133. The tire 131 is formed by molding rubber around the branch portions 133a, 133a ,. A concave groove 135 is formed in the circumferential direction on the outer peripheral portion of the tire located in the middle of both rims 130. The wheel C is structurally simple and has good stability.

In the wheel D shown in FIG. 4, one rim 130 is fixed to the axle boss 132 by the spokes 133, ... A concave groove 135 is formed around the rim 130 in the axial center of the outer peripheral surface. The tire 131 is formed by molding rubber into a shape formed in the circumferential direction. This wheel D
Is easy to manufacture and has a simple structure.

A wheel E shown in FIG. 5 has a structure in which a rim 130 is formed of a plate material having the illustrated shape, and rubber is molded around the rim 130 to form a tire 131. A concave groove 135 is formed in the circumferential direction at the center of the outer peripheral portion of the tire 131 in the axial direction. This wheel is structurally simple and has good stability.

A wheel F shown in FIG. 6 is a tire 1 which is a single wheel.
A low-pressure tire 131 'having a concave groove 135 formed in the outer circumferential portion in the circumferential direction is provided in parallel with the reference numeral 31 at a predetermined distance above the ground surface. The low pressure tire 131 'is
A rim 130 'fixed to the axle boss 132 by the spokes 133', and a rubber material 13 having end portions attached to the rim 130 '.
7 is formed into a hollow shape, and relatively low pressure air is enclosed in the hollow portion. This wheel F has good stability,
It is comfortable to ride.

The wheel G shown in FIG. 7 has a structure in which a low-pressure tire 131 'is provided between two tires 131 (1, 2) of a single wheel, which are arranged side by side with a space therebetween. The low-pressure tire 131 has the same structure as the low-pressure tire of the wheel F. This wheel is stable and comfortable to ride as above.

As can be seen from the above Examples A to G, the wheel of the present invention has a concave groove formed in the circumferential direction in the central portion in the axial direction (left and right) of the outer peripheral surface. When carrying out the planting work using the no-tillage transplanter in which these wheels are mounted on the traveling wheels, the machine body is advanced so that the concave groove 135 of the wheel passes over the stump S. Then, the stump S becomes the concave groove 13
Since the vehicle is fitted in 5, the wheels do not shift left and right, and the traveling direction of the machine body is kept constant. Further, when the wheel passes over the stump S, the upper surface of the concave groove 135 crushes the stump S, so that the surface soil surface of the field is leveled and the subsequent management work can be performed easily.

Next, a no-tillage transplanter equipped with these wheels will be described.

In the no-tillage transplanter 1 of the illustrated example, a planting work machine 4 which is a planting section is mounted so as to be capable of moving up and down via a lifting link device 3 behind a four-wheel traveling vehicle body 2 which is a traveling section. There is.

The traveling vehicle body 2 has a pair of left and right front wheels 6, 6 and rear wheels 7, 7 which are traveling wheels. A mission case 9 arranged in the front part of the machine body, and a pair of left and right main frames 10, 10 fixed to the rear part of the mission case
And a horizontal frame 11 connecting the rear end portions of the main frame to each other constitute a body frame.
The engine 14 is mounted on the pedestal 13 which is fixedly installed at 0 and 10.
Is installed. The rotational power of the engine 14 is shifted by the mission in the mission case 9 and taken out as a traveling output and a PTO output. The driving output is the front wheel final case 1 via the front axles 16 and 16.
7 and 17, the rear wheel transmission shaft 19, 19
Is transmitted to the rear wheel final case 20, 20 via. Further, the PTO output is transmitted from the mission to the planted clutch 23 via a PTO transmission shaft (not shown).

The cockpit 25 is installed on an engine cover 26 that covers the upper side of the engine 14. A steering handle 27 is provided in front of it. Around the engine cover 26 is a horizontal step floor 28 that allows the operator to walk freely.

The lifting link device 3 comprises a main frame 1
The upper link 31, 31 and the lower link 3 are attached to the link base frame 30 fixedly provided at the rear end portions of 0 and 10.
2, 32 are attached rotatably up and down, and a connecting frame 33 is connected to the rear ends of these links. Then, a yawing frame 36 is rotatably attached to the rear side of the connecting frame 33 about a vertical yawing shaft 35 as a fulcrum, and a bearing portion 37 integrally formed on the lower portion of the yawing frame 36 is attached from the planting machine side. A rolling shaft 38 protruding forward is rotatably inserted and connected. Therefore, planting work machine 4
Is supported so as to be rotatable (yawed) about a vertical axis and rotatable (rolling) about a substantially horizontal axis in the front-rear direction.

The lifting / lowering operation of the lifting / lowering link device 3 is performed by the hydraulic cylinder 40. The hydraulic cylinder 40 has its base side pivotally supported by a support member (not shown) fixed to the main frames 10, 10, and its piston rod side has a lower end of a swing arm 41 integrally provided at the base of the upper links 31, 31. Connected to the department. When the hydraulic cylinder 40 is expanded and contracted, the upper links 31, 31 and the lower links 32, 3
2 rotates up and down, and the planting work machine 4 moves up and down with a substantially constant posture.

Further, a pair of left and right lock springs 42, 42 are provided for locking the yawing and rolling when the planting work machine 4 is raised to a non-working position. One end of the lock spring 42 is attached to a seedling table supporting frame 72, which will be described later, of the planting work machine 4 so as to be rotatable about a horizontal axis and diagonally up and down. There is. The other end is formed in a loop shape including the elongated hole 43, and the lock pin 44 protruding to the outer surface of the lower link 32 is slidably fitted in the elongated hole 43. When the planting implement 4 is in the working position,
Since the lock pins 44, 44 are located in the middle portions of the elongated holes 43, 43, the lock springs 42, 42 are in a free state, and the planting work machine 4 is capable of yawing and rolling. However, when the planting work machine 4 is moved up to the non-working position, the lock pins 44, 44 are locked in the long holes 43, 4.
Since the lock springs 42 and 42 are pulled by engaging with the front end portion of No. 3, yawing and rolling are restricted, and the planting work machine 4 is constrained in a fixed posture.

The planting work machine 4 includes a transmission case 50 which also serves as a frame, a grooving disk 60 which is a grooving device for forming a groove for transplanting seedlings on the surface soil surface of a field, ... A seedling mounting table 70, a planting device 80 for planting the seedlings on the seedling mounting table one by one in the field scene (6 sets), ...
A float 90 for leveling and covering soil, etc. are provided.

The transmission case 50 includes an input portion 51 located at the center of the left and right sides, an L-shaped portion 52 having an L shape in a side view and integrally connected to a rear portion of the input portion, and an upper end portion of the L-shaped portion. The seedling table driving unit 53 provided on the left and right, the transmission pipes 54, 54 protruding left and right from the seedling table driving unit, and the planting device transmission unit 55 vertically extending from the end of the transmission pipe. , 55. Further, horizontal plates 57, 57 parallel to the L-shaped portion 52 are fixed to the outer surfaces of the planting device transmission portions 55, 55, and the mounting members fixed to the upper portions of the horizontal plates 57, 57 and the L-shaped portion 52. The float support pipes 58 are horizontally attached by the left and right sides 52a, 52a, and the later-described groove driving disk drive shaft 61 protruding left and right from the input portion 51 is provided at the front ends of the horizontal plates 57, 57. It is rotatably supported by. The base portion of the rolling shaft 38 is fitted to the input portion 51.

The grooving discs 60, ... Are attached to the grooving disc drive shaft 61 at a predetermined interval, and rotate in a predetermined direction with the lower part thereof submerged in the soil, so that the machine body advances. A groove for transplanting seedlings is formed on the surface soil of the field. The mounting position of each grooved disk 60, ...
It is in front of the seedling planting position by 0, ... And at the same position as the seedling planting position. In addition, the outermost groove 6
The rear wheels 7, 7 of the traveling vehicle body 2 are located in front of the gap between the 0, 60 and the grooving discs 60, 60 inside thereof.

The seedling mounting table 70 is provided so as to be inclined so that the front side is in a higher position, and the L-shaped portion 52 and the horizontal plate 57,
Support rail 71 fixed to 57 and lateral plates 57, 5
It is supported by the rollers 73, 73 attached to the upper end of the seedling table support frame 72 fixed to 7, and is slidable right and left. The seedling mounting table 70 has a seedling mounting portion 70 for the number of planting rows.
Partitioned into a, ..., And seedling feeding belts 75, ... Further, adjacent to the lower end of the seedling placing table 70, a seedling receiving plate 77 having seedling taking openings 76, ... Corresponding to the planting devices 80 ,. The left and right ends of the lateral movement rod 78 protruding laterally from the seedling table driving unit 53 of the transmission case 50 and the lower left and right side surfaces of the seedling table 70 are connected to the connecting plates 79, 7.
9 are connected, and the lateral movement rod 78 reciprocates left and right, so that the seedling mounting base 70 also reciprocates left and right, and the seedling picking holes 76 ,. The above seedlings will be supplied one by one.

The planting device 80, ... Includes a planting device mounting shaft 81 (1, 2, 3) rotatably supported by the bent portion of the L-shaped portion 52 and the lower ends of the planting device transmission portions 55, 55. Are attached to the left and right ends of the. Each planting device 80
Is a rotating case 82 that rotates together with the planting device mounting shaft 81.
And a pair of implanting rods 83, 83 attached to both ends of the rotating case. The power transmission mechanism in the rotating case 82 causes the planting rods 83, 83 to rotate in a direction opposite to the rotating direction of the rotating case 81, and the tip of a fork-shaped seedling separating claw 82a fixed to the planting rod is vertically deformed into an elliptical shape. Operates to draw a closed trajectory. As a result, the seedling separating claws 83a are attached to the seedling mounting table 70.
The seedlings supplied to the seedling take-out port 76 are separated and held, and the seedlings are planted in the groove for transplanting seedlings formed by the grooving disk 60.

The floats 90, ... Are located between the planting device 60 and the L-shaped part 5 of the transmission case.
2 and the float support pipes 58, 58 so as to be vertically rotatable. During the planting work, while supporting a part of the weight of the planting work machine 4, the work machine 4 slides on the water surface as the machine body advances. A groove 91 is formed in the center of the bottom surface of the float 90 in the front-rear direction to avoid interference with the stump.

Further, mudguard plates 95, ... Located between the grooving disks 60, ... And the planting devices 80 ,. The scraped mud does not come into contact with the planting device 80, ....

The internal structure of the transmission case 50 is as follows.

The power transmitted from the PTO shaft 23a, which is the driven rotary shaft of the planting clutch 23, to the input shaft 101 of the input unit 51 via the planting unit transmission shaft 100 is input by the bevel gears 103 and 104. It is transmitted to the horizontal axis 105 of the department. Then, the rotation of the input portion horizontal shaft 105 is transmitted to the grooving disk drive shaft 61 via the first chain 107. 107a is a sprocket on the horizontal axis side of the input unit,
Reference numeral b is a sprocket on the grooved disk drive shaft side. The sprocket 107b on the grooving disk drive shaft side is rotatably fitted to the grooving disk drive shaft 61, and is connected to the grooving disk drive shaft 61 via a grooving clutch 108 so that transmission can be turned on and off. There is.

Further, a different sprocket 109a is formed integrally with the sprocket 107b on the grooved disc drive shaft side, and the sprocket 109b is rotatably attached to the sprocket 109a and the central planting device attachment shaft 81 (2). The second chain 109 is stretched over. Further, the third chain 110 is stretched between a sprocket 110a integrally formed with the sprocket 109b and a sprocket 110b attached to a planting device drive shaft 111 rotatably supported by the seedling table drive unit 53. Through these second and third chains 109 and 110,
The rotation of the input part horizontal shaft 105 is transmitted to the planting device drive shaft 111. The sprocket 110b of the planting device drive shaft is rotatably fitted to the planting device drive shaft 111, and is connected to the planting device drive shaft 111 via a fixed position clutch 112 so that transmission can be turned on and off. . The fixed position clutch 112 is
When the clutch is disengaged, the planting devices 80, ... Stop operating at fixed positions.

The planting device drive shaft 111 is a seedling table drive unit 53.
And a transmission pipe 54, 54 and a planting device transmission part 55, 55, which are shafts penetrating the inside of the planting device drive shaft. The sprockets 114a are attached to the central part and both left and right ends of the planting device drive shaft.
(1, 2, 3) and each planting device mounting shaft 81 (1, 2, 3)
Through the fourth chain 114 (1, 2, 3) stretched on the sprocket 114b (1, 2, 3) attached to
It is transmitted to 2, 3).

The seedling table driving section 53 is provided with a lead cam shaft 116 and a lateral moving rod 78 which constitute a seedling table reciprocating mechanism. The lead cam shaft 116 is a shaft in which a spiral groove 117 is formed on the outer peripheral portion, and a lead claw 119 of a lead metal 118 fixedly attached to the lateral movement rod 78 is engaged with the groove 117. When the lead cam shaft 116 rotates, the lead metal 118 moves in the axial direction along the groove 117, whereby the seedling mounting base 70 is reciprocated left and right, and the seedlings on the seedling mounting base are moved to the seedling taking ports 76, .... It is supplied sequentially.

The lead cam shaft 116 is composed of a plurality of sets (three sets in this example) of non-equal diameter gears, and a lateral movement amount switching speed device 121.
Is transmitted from the planting device drive shaft 111 via. When the combination of the gears of the lateral movement amount switching device 121 is changed, the distance over which the seedling table 70 laterally moves while the planting devices 80, ... Operate once, changes. Therefore, the number of seedlings taken per one step of the seedling table is changed. Will switch. In this example, the number of seedlings can be switched to three levels.

The extension shaft 12 of the lead cam shaft 116
3, 123 are projected outside the case, and seedling feeding arms 124, 124 are attached to the ends thereof. The seedling feeding arms 124, 124 are constantly rotating together with the lead cam shaft 116, and when the seedling placing table 70 reaches the end portion of the left and right strokes, one of the left and right seedling feeding arms 124 is a passive arm on the seedling feeding belt side (not shown). ), The seedling feeding belt 85,
... is moved in a predetermined direction by a predetermined amount.

The no-tillage transplanter 1 is constructed as described above, and when performing the planting work, the planting work machine 4 with the seedlings placed on the seedling placing table 70 is lowered to the working position, and the planting work machine is placed. The traveling vehicle body 2 is started while driving the respective parts of 4. Float 9
The planting work machine 4 moves while 0, ... slide on the water surface, and first, the 6 grooves for seedling transplantation are formed on the surface soil surface of the field by the grooving disk 60 ,. The planting device 80, ...
, The planting rods 83, ... Receive the plants one by one, and plant them in the seedling transplanting groove.

As shown in FIG. 12, by advancing the aircraft so that the concave groove 135 of the wheel passes over the stump, seedlings are planted in the left and right middle portions of the stump row S ,. .

[0038]

As described above, the wheel according to the present invention has a concave groove formed in the circumferential direction at the axially central portion of the outer peripheral surface of the wheel when the wheel is passed over a stump. When the stump fits in the wheel, the wheels are unlikely to slip left and right. Therefore, when the wheels of the present invention are mounted on the traveling wheels of the no-tillage transplanter, the straightness of the no-tillage transplanter is improved, and the groove for seedling transplant formed on the surface soil surface of the field by the groove making device. The planting equipment will be able to plant seedlings accurately.

[Brief description of drawings]

1A is a front sectional view of a wheel A, and FIG. 1B is a side view.

FIG. 2 is a front sectional view of a wheel B.

FIG. 3 is a front sectional view of a wheel C.

FIG. 4 is a front sectional view of a wheel D.

5 is a front sectional view of a wheel E. FIG.

FIG. 6 is a front sectional view of a wheel F.

FIG. 7 is a front sectional view of a wheel G.

FIG. 8 is a side view of the no-tillage transplanter.

FIG. 9 is a plan view of the no-tillage transplanter.

FIG. 10 is a side view of the planting work machine.

FIG. 11 is a plan view of the planting work machine.

FIG. 12 is a perspective view of a transmission case.

FIG. 13 is a side view of a transmission case.

FIG. 14 is a transmission system diagram of the planting work machine.

FIG. 15 is a front view showing the shape and arrangement of floats.

[Explanation of symbols]

 1 No-tillage transplanter 2 Running vehicle 3 Lifting link device 4 Working machine 50 with planting 50 Transmission case 60 Grooving disk 70 Seedling table 80 Planting device 130 Rim 131 Tire 132 Axle boss 134 Spokes 135 Recessed groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hiroyuki Niiyama, No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture, Engineering Department, Iseki Agricultural Machinery Co., Ltd. Company Engineering Department (72) Inventor Hisashi Kamiya 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd. Inventor Takashi Suzuki, No. 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture

Claims (1)

[Claims] 1. A wheel characterized in that a concave groove is formed in a circumferential direction at a central portion of an outer peripheral surface in an axial center direction.