JP2002204607A - Riding type seedling planting machine with fertilizing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that in a conventional riding type seedling planting machine with a fertilizing apparatus, since the seedling planting machine is equipped with a fertilizer transportation apparatus such as a transportation apparatus utilizing force of air by a blower, a screw sending apparatus, etc., only a riding type seedling planting machine having an enlarged machine body constitution is provided. SOLUTION: Fertilizing tanks 464 of fertilizing apparatuses 463 are arranged at the upper position of rear wheels 8 at a rear side of a seat 12 on the side view of a machine body and fertilizer sending apparatuses 465 for sending each fixed amount of a fertilizer from the fertilizing tank 464 are installed at positions with the rear wheels 8 laid between the fertilizer sending apparatuses when viewed in a plane of the machine body to provide the objective riding type seedling planting machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding type seedling transplanter such as a rice transplanter, a vegetable transplanter or a rush transplanter equipped with a fertilizer.

[0002]

2. Description of the Related Art Conventionally, as a riding-type seedling-planting machine, a fertilizer-applying device such as a conveying device utilizing a wind force of a blower or a spiral feeder is known. I have.

[0003]

This conventional riding type seedling transplanter with a fertilizer application device is provided with a fertilizer transport device such as a transport device utilizing a wind force of a blower or a spiral feed device. Only a large aircraft configuration could be obtained.

[0004]

In order to solve the above-mentioned problems, the invention according to claim 1 comprises a front wheel 7 and a rear wheel 8 and a seat 1.
In a riding type seedling machine in which a seedling mounting section 4 is mounted on a riding type traveling vehicle 2 equipped with a lifting and lowering device 3 via an elevating link device 3, a rear wheel 8 is provided at a rear side of a seat 12 in a side view of the body. A fertilizer application tank 465 of a fertilizer application device 463 is disposed at an upper position, and a fertilizer feeding device 465 for feeding a predetermined amount of fertilizer from the fertilizer application device 464 is disposed at a position sandwiching the rear wheel 8 in a plane view of the machine body. Planting machine,
According to the second aspect of the present invention, the groove generator 467 is arranged on the rear side of the rear wheel 8 and in front of the seedling planting section frame 110 of the seedling planting section 4 in a side view of the machine body. Fertilizer pipe 46 for guiding fertilizer fed from fertilizer feeding device 465
6. A riding-type seedling-planting machine with a fertilizer device according to claim 1 provided with a sixth fertilizer.

[0005]

According to the first aspect of the present invention, the seedling planting section 4 is mounted on the riding traveling vehicle 2 equipped with the front wheel 7 and the rear wheel 8 and the seat 12 via the lifting link device 3 so as to be able to move up and down. In the riding type seedling transplanter, the fertilizer application tank 463 is provided at a position above the rear wheel 8 behind the seat 12 in a side view of the body.
And a fertilizer feeding device 465 for feeding a predetermined amount of fertilizer from the fertilizer application tank 464 with the rear wheel 8 in plan view of the body.
In this embodiment, the fertilizer application device 463 is disposed above the rear wheel 8 so as to achieve a well-balanced longitudinal cross section. Since the fertilizer 463 can be arranged at a lower position, the center of gravity of the machine can be reduced, and a small-sized riding-type seedling plant with a fertilizer can be obtained with good body running performance.

According to a second aspect of the present invention, the seedling planting portion frame 110 of the seedling planting portion 4 is located on the rear side of the rear wheel 8 in a side view of the machine body.
And a fertilizer application pipe 466 that guides the fertilizer fed from the fertilizer feeding device 465 to the groove generator 467. Therefore, the fertilizer pipe 466 can be disposed at a relatively steep angle, and the fertilizer can be guided to the groove generator 467 by the fertilizer pipe 466 by natural fall from the fertilizer feeding device 465. As described above, a fertilizer conveying device such as a conveying device utilizing a wind force of a blower or a spiral feeding device is not required, and a small-sized riding-type seedling having an inexpensive and simple configuration with a fertilizing device can be obtained.

[0007]

Preferred embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show an embodiment of a riding type rice transplanter which is a kind of riding type seedling transplanter. The riding type rice transplanter 1 is connected to a rear side of a riding type traveling vehicle 2 via an elevating link device 3. A four-row seedling planting section 4 is mounted so as to be able to move up and down.
A reserve seedling frame 5,... Is provided step by step.

The traveling vehicle 2 is a four-wheel drive vehicle provided with a pair of left and right front wheels 7, 7 and rear wheels 8, 8, which are driving wheels, and an engine 10 is mounted at the center of the body in the front-rear direction. The seat 12 is placed on the engine cover 11 that covers the
Is installed. A bonnet 13 is provided in front of the seat 12, and a steering handle 14 for steering the front wheels 7, 7 is provided above the hood 13. The periphery of the engine cover 11 and the hood 13 is a horizontal step 15 through which a person can walk.

FIG. 3 is a side view in which a part of the traveling vehicle is omitted, and FIG. 4 is a plan view thereof. A transmission case 20 is disposed at the front of the fuselage. Front wheel axle cases 21 and 21 extend laterally from left and right side portions of the transmission case, and front wheel final cases 21 and 21 are provided at the front ends thereof so as to be able to turn. Each of the 21 front wheel axles 7a, 7a has a front wheel 7,
7 is rotatably supported. A pair of left and right main frames 23, 23 are provided on the back of the transmission case 20.
The left and right rear frames 24 are connected to the rear ends of these main frames, and the rear wheels 8 are attached to rear wheel final cases 25 fixed to the left and right ends of the rear frames 24. , 8 are rotatably supported. Further, the lifting link device 3 is provided on the rear frame 24.
A pair of left and right link support frames 26, 26 for supporting the upper side are protruded upward.

On the upper side of the chassis, the step 15
Is provided for supporting the frame. This frame includes a front left / right frame 30, a center left / right frame 31, and a rear left / right frame 32 in the left / right direction, and front / rear front frames 33, 33 and rear front / rear frames 35, 35 in the front / rear direction connecting these frames to each other. . The left and right central portions of the center left and right frames 31 are
Is connected to the upper end of a U-shaped frame 36 provided upward from the front of the frame. The rear left and right frames 32 are connected to upper end portions of the pair of left and right link support frames 26 and 26. Also, the left and right front front and rear frames 35, 35
It is supported from below by upper and lower frames 37, 37 whose lower ends are fixed to the front wheel axle cases 21, 21.

The left and right ends of the central left and right frame 31 project beyond the step 15. The support frames 39, 39 of the spare seedling frames 5, 5 are rotatable around pipes 38, 38 fixed to the left and right ends. Attached to. When not working, the spare seedling frame 5 can be stored at a position indicated by a chain line in FIGS.

Further, as a frame for mounting the fuel tank 41, both ends are fixed to left and right rear front and rear frames 35, 35, and the front fuel tank support frame 42 has a gate shape in a front view. A U-shaped rear fuel tank support frame 43 which is fixed and protrudes obliquely upward and forward is provided. Pins 45,... Protruding upward are fixed to upper horizontal portions of the fuel tank support frames 42, 43. Fuel tank 4
When the fuel tank 4 is mounted, as shown in FIG.
1, pin holes 41b formed in front and rear edges 41a,
… And the washers 46 arranged on the upper and lower sides of the
, Are inserted, and the snap pins 47,
Tighten and fix. In this mounted state, the fuel tank 41 is housed between the engine 10 and the engine cover 11. The attachment and detachment work of the fuel tank 41 is easy. Also, by providing frames 42 and 43 for mounting the fuel tank 41 separately on the front and rear,
There is no obstacle on the side of the fuel tank 41 or the engine 10,
Maintenance of the engine 10 is facilitated.

The rotational power of the engine taken out by an engine output shaft 50 protruding from the left side of the engine 10 is transmitted by a first belt transmission 51 to an auxiliary transmission shaft 52 supported below the engine output shaft 50. . The transmission case 20 is moved from the auxiliary transmission shaft 52 to a second belt transmission 54 configured as an auxiliary transmission.
Is transmitted to a drive shaft 56 of a hydraulic pump 55 provided on
Further, the power is transmitted from the drive shaft to a transmission input shaft 58 protruding from the left side surface portion of the transmission case 20 by a third belt transmission 57 configured as a main clutch. Since the hydraulic pump 55 is driven by the power shifted by the subtransmission, an operating speed of the hydraulic pressure matching the working speed is obtained.

The rotational power input to the transmission case 20 is shifted by a main transmission in the case, which will be described later, and then separated into running power and planting power.
Front axle case 2 protruding left and right from the wheel 20
Power is transmitted to the front wheel final cases 22, 22 via the first and second 21, and the left and right front wheels 7, 7 are driven by rotating the front wheel axles 7a, 7a. Further, left and right rear wheel transmission shafts 60 for transmitting power from the rear of the transmission case 20 to the rear are provided, and the left and right rear wheel transmission shafts 60 are driven into the left and right rear wheel final cases 25, 25, respectively. The right and left rear wheels 8 are driven by rotating the rear wheel axle.

Note that the seedling planting section 4 is provided with the mission case.
The power is transmitted from the case 20 by the planting transmission shaft 61 and the transmission shafts 62 and 63 extending rearward from the case 20 to operate. Next, the transmission structure in the transmission case 20 will be described. An ultra-low-speed shift driven gear 241 meshing with an ultra-low-speed drive gear 240 that rotates integrally with the transmission input shaft 58 is driven.
The power is transmitted to a main transmission shaft 242 that rotates integrally with the transmission 41.
The ultra-low-speed shift drive side gear 240 and the ultra-low-speed shift follower side gear 241 are large-diameter gears 240a and 241a, respectively.
And the small-diameter gears 240b and 241b.
Is provided so as to be slidable along the transmission input shaft 58 by an ultra-low speed shift operation shifter 244 operated by the operation of When the small-diameter gear 240b on the ultra-low-speed shift drive side and the large-diameter gear 241a on the ultra-low-speed shift drive side are engaged, the transmission is performed at an ultra-low speed, and the large-diameter gear 24 on the ultra-low-speed shift drive side
0a is transmitted at a low speed when the small-diameter gear 241b on the driven side of the ultra-low speed shift is engaged.

The method of using the ultra-low speed by operating the ultra-low speed shift lever-243 is to operate the main speed and the sub-speed at low speed and to operate the ultra-low speed shift lever-243 to make the vehicle speed extremely low. When loading or unloading the aircraft on a truck, or when crossing a ridge due to movement between fields, the aircraft is in a slow forward state (slow backward state), and the operator can safely operate and operate safely.

A stock switching gear case 300 is removably fixed to the side wall of the transmission case 20 on the right end side of the main transmission shaft 242 by bolts (the stock switching gear case 3).
00 is the front wheel axle 7 of the front wheel final cases 21 and 21
a, 7a). In the inter-stock switching gear case 300, a planting drive shaft 301 that rotates integrally with the shaft end of the main transmission shaft 242 and a driven shaft 302 that is arranged in parallel to the planting drive shaft 301. Both ends are rotatably supported by bearings, and the planting drive shaft 301 is provided with a large-diameter drive gear 303, a medium-diameter drive gear 304, and a small-diameter drive gear 305 so as to freely rotate. Each large-diameter drive gear 303
The three driven gears 306, 307 and 308 meshing with the medium diameter drive gear 304 and the small diameter drive gear 305, respectively,
2 so as to be integrally rotated.

The planting drive shaft 301 is provided with a hollow portion in the shaft so that the engagement key 31 is slidable in the axial direction.
0 is operated by the inter-stock switching lever 311, and the engagement portion 312 of the engagement key 310 is provided on the inner periphery of each of the large-diameter drive gear 303, the medium-diameter drive gear 304, and the small-diameter drive gear 305. Of the planting drive shaft 3
01 rotation of each large-diameter drive gear 303 / medium-diameter drive gear 30
4. A well-known key-type transmission that transmits to any of the small-diameter drive gears 305.

On the other hand, an inner end of the driven shaft 302 is engaged with a shaft end of a rotating shaft 315 provided on the transmission case 20, and the planted bevel gears 247, 2 of the rotating shaft 315.
The seedling transmission part 4 is driven by transmitting the seedling transmission shaft 61 extending rearward through 48.

Therefore, by operating the inter-stock switching lever 311 to transmit the driving force to any of the large-diameter drive gear 303, the medium-diameter drive gear 304, and the small-diameter drive gear 305, the rotation of the planting transmission shaft 61 can be performed in three stages. The driving speed of the seedling planting section 4 changes with respect to the traveling speed of the traveling vehicle 2.
The number of seedlings can be changed to three.

The number of seedlings to be planted varies depending on the worker who performs the agricultural work, the region and the field, and it is necessary to set various types of plants according to the demands of the worker. Therefore, the large-diameter drive gear 303, the medium-diameter drive gear 304, and the small-diameter drive gear 305 in the stock switching gear case 300.
And several types of driven gears 306, 307 and 308 having different numbers of teeth meshing therewith are prepared, and an inter-stock switching gear case 300 between the stocks requested by an operator (machine purchaser) is prepared.
Is mounted on the side wall of the mission case 20,
It is possible to easily produce many types of models different between strains.

The main transmission gear 249 that rotates integrally with the main transmission shaft 242 includes a large diameter gear 249a and a small diameter gear 249a.
9b, and is slidably provided along the main transmission shaft 242 by a main transmission shifter 250 operated by operating the transmission lever 81. When the main transmission large-diameter gear 249a and the counter shaft 251 and the small-diameter counter gear 252 that rotate integrally with each other mesh with each other, the transmission is transmitted at a high speed (road traveling speed), and the main transmission gear 249 slides to the left to reduce the main transmission small diameter. Gear 249b and counter shaft 251
The transmission is performed at a low speed (planting operation speed) when the large-diameter counter gear 253 and the large-diameter counter gear 253 that rotate integrally with each other mesh with each other. Further, when the main transmission gear 249 slides to the left, the main transmission small-diameter gear 249b and the reverse small-diameter counter gear 254b on the transmission input shaft 58 mesh with each other, and the reverse large-diameter counter gear integrated with the reverse small-diameter counter gear 254b. The transmission is transmitted to a reverse counter gear 255 on a counter shaft 251 that meshes with the gear 254a.
1 is transmitted by rotation in the opposite direction to that described above, and the reverse speed at which the aircraft moves backward is obtained. The counter gear 254 for reverse rotation is provided so as to freely rotate with respect to the transmission input shaft 58.

A shoe-type four-wheel brake device 239 is provided on the left end side of the counter shaft 251. The four-wheel brake device 239 applies a braking force to the left and right front and rear wheels 7, 8. It is configured to provide. The small-diameter counter gear 252 that rotates integrally with the countershaft 251 transmits power to the front-wheel differential device 257 by a front-wheel differential input gear 256 that meshes with the gear 252, and the front wheel 7 , 7
To be transmitted to. The front wheel differential device 257 includes a case body 2 that forms a differential case on the left and right of the front wheel differential input gear 256.
57a and 257b are provided.

The case body 25 on the left side of the front wheel differential device 257
7a, a differential lock claw 259 is formed at the left end, and a differential lock body 261 provided with a differential lock claw 260 meshing with the claw 259 is mounted on a differential output shaft 258.
8 so as to rotate integrally therewith. The differential lock body 261 is provided so as to be slidable left and right along a differential output shaft 258, and the differential lock body urging spring 2
62, the case body 257a on the left side is urged to the opposite side to the case body 257a on the left side. The case lock 264 is actuated by the depressing operation of the front wheel diff lock pedal 263, and the case is opposed to the spring 262.
Slide body 257a. Accordingly, the differential lock member 261 is slid by the differential lock operation shifter 264 to engage the differential lock claw 260 with the differential lock claw portion 259 of the case member 257a, and the case member 257a and the left and right differential output shafts 258 are integrated. The left and right front wheels 7, 7 are differentially locked by being rotated.

A differential brake 290 is formed at the right end of the case body 257b on the right side of the front wheel differential device 257, and the differential output shaft 258 is fixed to a fixed plate 291 fixed to the transmission case 20. A rotation plate 292 provided so as to rotate integrally with the shaft 258 is mounted on the compression spring 2.
At 93, the pressure contact is made at a predetermined pressure. Therefore,
The front wheel differential device 257 is always in a half differential lock state. Specifically, when planting seedlings in the field,
Until the left and right front wheels 7, 7 are subjected to a predetermined load, they are rotationally driven in a differential locked state, and the driving force of the left and right front wheels 7, 7 is stable and exhibits good running performance. Planting of young seedlings can be performed. When the left and right front wheels 7, 7 are overloaded, the differential brake 290
As the front and left and right front wheels 7, 7 are in differential operation,
Appropriate running performance can be exhibited according to the conditions of the field. On the other hand, when the left and right front wheels 7, 7 are overloaded and the differential brake 290 slips at the time of turning on a ridge, etc., the front left and right front wheels 7, 7 are differentially locked by depressing the front wheel differential lock pedal 263. Good turning can be done by turning the aircraft.

Since the differential lock mechanism and the differential brake 290 are arranged on the left and right sides of the front wheel differential device 257 as described above, the body can be made compact, and the balance between the sides of the body can be improved. Good aircraft. The left and right case bodies 257a and 257b of the front wheel differential device 257 are provided with inner gears 265 having tooth surfaces on the inner diameter. Further, side clutch bodies 267 and 267 having gears 266 meshing with the inner gear 265 are provided on the left and right sides, and the case bodies 257a and 257b and the side clutch bodies 267 and 267 are provided.
And rotate together.

The left and right rear wheel transmission gears 268 meshing with the gear 266 of the side clutch body 267 are provided.
To be transmitted to. The left and right drive bevel gears 2 that rotate integrally with the rear wheel transmission gear 268 from the left and right rear wheel transmission gears 268 via a rear wheel counter shaft 269.
70, and transmitted from the drive bevel gear 270 to the left and right rear wheel transmission shafts 60 via the driven bevel gear 271 meshing therewith.

The side clutch body 267 has side brakes.
A body 272 is provided. Also, the side clutch body 26
7 is a case body 257a, 257 of the front wheel differential device 257.
b and is slidable left and right on a differential output shaft 258 and urged by a side clutch body urging spring 273 toward the inner gear 265 provided on the case bodies 257a and 257b. The internal gear 265 is opposed to the side clutch body biasing spring 273 by a side clutch operation shifter 274 that operates in conjunction with the turning operation of a predetermined range or more.
And slide to the opposite side. That is,
The side clutch body 267 is slid by the side clutch operation shifter 274, and the gear 266 of the side clutch body 267 and the case body 257a of the front wheel differential device 257,
257b is disengaged from the inner gear 265 and the side brake body 272 is pressed against the inner wall surface of the transmission case 20 to cut off the transmission to the right and left rear wheels 8, 8 and to brake the rear wheels 8. Configuration.

The shifter shaft 275 of the side clutch operation shifter 274 is arranged before and after the differential output shaft 258 having the side clutch 267 and the side brake 272, and the steering shaft 275 is arranged.
Rotating shaft 28 of the interlocking rotating body 279 that rotates with the rotation of
The shifter 274 is interlockingly connected via a shifter arm 276 and a shifter rod 277 before and after the zero. The bearing base 281 of the interlocking rotating body 279 is provided with an arc-shaped guide groove 282 drawn around the rotating shaft 280, and the engaging pin 283 provided at the end of the shifter rod 277 is slidably fitted. Let me. Engaging concave portions 284 and 284 that engage with the engaging pins 283 and 283
When the interlocking rotating body 279 rotates within a certain range, the engaging recess 284 on the rotating direction engages with the engaging pin 283 to operate the shifter rod 277.
The shifter rod 277 is configured to be able to expand and contract via a buffer spring 285. Therefore, from the clutch disengaged state to the time when the brake is effective, the operation of the buffer spring 285 makes it possible to selectively use the rotation of the clutch alone and the rotation of the brake.

The brake device 239 is operated by depressing the brake pedal 234.
A brake operating mechanism including a key pedal shaft 235, a brake operating arm 236, a brake operating rod 237, a brake operating arm 238, and the like, interlocked with a turning operation of the steering handle 14. Steering including a side clutch operation shifter 274 for operating the side clutch 267 and the side brake 272, a shifter shaft 275, a shifter arm 276, a shifter rod 277, an interlocking rotating body 279 that rotates with the rotation of the steering shaft 227, and the like. The operation mechanisms are arranged so as not to cross each other in a plan view.

The planting power is extracted from the right side of the transmission case 20 slightly outward and obliquely rearward, and is transmitted through the first, second and third planting transmission shafts 61, 62, 63 to the seedling planting section 4. Is transmitted to By setting the position of the planting power take-out portion of the transmission case 20 relatively close to the left and right center of the machine body, the maximum turning angle of the right front wheel 7 can be increased. Regarding the maximum turning angle of the left front wheel 7, of the two belt transmissions 54, 57 disposed on the front and rear sides of the hydraulic pump drive shaft 56, the one 57 having a relatively simple structure and a narrow maximum left and right width is used as the left front wheel 7. By arranging them close to each other, the maximum turning angle of the left front wheel 7 can be increased.
Further, by arranging the first planting transmission shaft 61 and the second planting transmission shaft 62 so as to be convex outward, the engine 10 installed at a low position and the planting transmission shafts 61 and 6 are disposed.
2 does not interfere.

FIG. 10 is a diagram showing a mechanism of a second belt transmission as an auxiliary transmission. Second belt transmission 54
A drive-side pulley 70 fitted to the auxiliary transmission shaft 52;
Driven pulley 71 fitted to the hydraulic pump drive shaft 56
The transmission belt 72 is hung on the
The tension is applied by two tension rollers 74 and 75 (shown in FIGS. 11 and 12), each of which is urged to the side where the cable 2 is stretched. The driving pulley 70 is a split pulley,
One component 70a is fixed to the auxiliary transmission shaft 52, and the other component 70b is slidable in the axial direction with respect to the auxiliary transmission shaft 52. Since the tension rollers 74 and 75 are configured to apply tension to the transmission belt 72 from both the inside and the outside of the transmission belt 72, the slack of the transmission belt 72 can be efficiently absorbed. Inadvertent run-out can also be prevented, and even though the transmission is a belt-type transmission using split pulleys, the distance between the drive-side auxiliary transmission shaft 52 and the driven-side hydraulic pump drive shaft 56 can be reduced,
It can contribute to downsizing of the aircraft.

The position of the movable component 70b is regulated by a speed change operation cam 78 which can rotate freely via a bearing 77. A circumferential ridge 78 a is formed on the outer surface side of the speed change operation cam 78, and the ridge 78 a contacts a roller 79 a provided on the fixed cam 79. Ridge 78a
Since the amount of protrusion of the gear 78 varies depending on the position on the circumference, the gear shift operation cam 78 is rotated by operating a gear shift lever 81 described later, and the contact point of the ridge 78a to the roller 79a is changed. Rotates and the roller 79a rotates
The shift operation cam 78 and the movable component 70b whose position is regulated move in the axial direction according to the tension of the transmission belt 72, and the effective diameter of the driving pulley 70 changes. . The larger the effective diameter of the driving pulley 70, the lower the speed of the second belt transmission 54. Further, when the effective diameter of the driving pulley 70 becomes equal to or more than a certain value, the driving pulley 70 and the transmission belt 72 idle, and the transmission of the second belt transmission 54 is stopped.

FIGS. 11 and 12 show the speed change operation mechanism.
The speed change lever 81 is provided so that the grip portion is located near the right side of the seat 12, and is operated to rotate back and forth with a left and right rotation shaft 82 as a fulcrum. Rotating shaft 8
Reference numeral 2 extends leftward, and a rotating arm 83 attached to a tip end thereof and an arm portion 78b of the speed change operation cam 78 are connected via a speed change operation rod 84. Shift lever 8
When 1 is operated in the stop region N, the subtransmission is in the transmission stop state, and when it is operated in the forward region F and the reverse region R, the subtransmission is in the transmission state, and the transmission gear ratio increases as the distance from N increases. (High-speed transmission).

The transmission lever 81 is rotatable left and right about a connecting pin 85 connected to a rotation shaft 82, and its left and right rotation is transmitted via a main transmission cable 86 to the transmission case 20.
The transmission is transmitted to the main transmission shifter 250 of the main transmission inside. As the shift lever 81 is operated outward from the seat side, the main shift is switched in the order of “forward”, “reverse”, “neutral”, and “road running”.

The lever guide 87 of the shift lever 81 is shown in FIG.
As shown in FIG. Thus, the main shift can be switched only when the sub-shift is in the transmission stop state, and when the main shift is “forward”, “neutral”, and “road running”, the shift lever 81 can be operated only to the forward side. When the shift is "reverse", the shift lever 81 can be operated only to the reverse side. Further, a restraint arm 88 is provided which is turned between a position (shown by a solid line) that blocks between "reverse" and "neutral" and a position (shown by a chain line) that does not block. By setting the position, the main transmission can be prevented from being suddenly switched to “neutral” or “road running” during the planting operation.

As shown in the lever guide of FIG. 17, when the main shift is "forward" or "reverse", the shift lever 81 is operated to the same side to adjust the speed of the sub-shift. When the second belt transmission 54 is configured to perform
Since the rotation angle of the speed change operation cam 78 can be small, the speed change operation mechanism can be simplified.

The third belt transmission 57 as the main clutch
Is a drive pulley 90 that is fitted to the hydraulic pump drive shaft 56 integrally with the driven pulley 71 of the second belt transmission 54.
And a driven pulley 91 fitted to the transmission input shaft 58
And a transmission belt 92 is hung. Transmission belt 92
The tension roller 93 is rotatably supported by a rear end of a roller arm 95 attached to a pedal shaft 94 in the left-right direction. A clutch pedal 96 as a stop operation tool is attached to the pedal shaft 94 so as to rotate integrally therewith, and the clutch pedal 96 is urged rearward by a spring (not shown). When the clutch pedal 96 is depressed forward against the tension of the spring, the tension roller 93 separates from the transmission belt 92, and the main clutch "disengages" in which the transmission of the third belt transmission 57 is cut off.

When the pedal arm 96a of the clutch pedal 96 and the shift lever 81 are connected via an interlocking cable 98, and the clutch pedal 96 is depressed to operate the main clutch "disengage", the second clutch is interlocked therewith. When the transmission of the two-belt transmission 54 is stopped, the transmission lever 8 is stopped.
1 automatically moves to the stop area N.

By configuring the speed change operation mechanism as described above, both the main speed change and the auxiliary speed change can be operated with only the speed change lever 81. There are a method of stopping the advance of the body, a method of operating the transmission lever 81 to the stop region N to put the sub-transmission in a transmission stop state, and a method of stepping on the clutch pedal 96 to "disengage" the main clutch. The former is suitable for a normal stop such as when supplying seedlings, and the latter is suitable for an emergency stop. When the clutch pedal 96 is depressed and stopped, the main clutch is disengaged, and the sub-shift is also stopped in transmission in conjunction therewith. Therefore, even if the foot is released from the clutch pedal 96 after the stop, the main clutch is kept stopped. You. Further, when the clutch pedal 96 is stopped by depressing the clutch pedal 96, the shift lever 81 automatically moves to the stop region N in conjunction therewith, so that the shift lever 81
Must be intentionally operated to the forward area F or the reverse area R. For this reason, the vehicle can start smoothly at the speed as conscious of the operator.

The elevating link device 3 includes upper links 100 parallel to each other on the link support frames 26, 26 as viewed from the side.
A pair of left and right lower links 101, 101 are rotatably supported, and a connecting frame 102 is pivotally connected to the rear end of each link. A rolling shaft 103 protruding forward from the seedling planting section 4 is inserted into the connection frame 102, and the seedling planting section 4 is connected in a freely rolling manner. Lower link 101, 10
A swing arm 104 is provided so as to rotate integrally with the swing arm 1, and a piston rod of a lifting hydraulic cylinder 105 whose base is supported by the main frame 13 is connected to the swing arm 104. When the elevating hydraulic cylinder 105 is expanded and contracted, each link rotates up and down, and the seedling placement unit 4 moves up and down with a substantially constant posture.

The seedling placement section 4 places the seedlings on a seedling placement section frame 110 having a built-in transmission mechanism, reciprocates left and right, and transports the seedlings downward by the seedling feed belts 111a,. , And four sets of seedling planting devices 113, which take out seedlings supplied to the seedling outlets 111b,... And plant the seedlings on the paddy fields. A leveling center float 114 and side floats 115, 115 whose front portions are movable up and down are assembled.

The seedling planting device clutch 116 (see FIG. 16) is provided on the transmission path to the two sets of seedling planting devices 113 on the left side and on the transmission route to the two sets of seedling planting devices 113 on the right side. The operation of the four sets of seedling planting apparatuses can be stopped in units of two. Also,
Correspondingly, in order to stop the operation of the seedling feed belts 111a,.
See also).

The operation lever 120 for operating the seedling-planting device clutch and the seedling feed belt clutch is provided near the left side of the seat 12 near the pivot of the upper link 100 in side view. As shown in FIG. 16, the upper link 100 connects the arm 120a that rotates integrally with the operation lever 120 and the clutch pin 116a of the seedling planting device clutch 116.
Seedling planting equipment clutch operating cable 1 routed along
21. One end of a seedling feed belt clutch operation cable 122 is connected to the clutch pin side end of the seedling placement device clutch operation cable 121, and the other end of the seedling feed belt clutch operation cable 122 is connected to the other end. It is connected to the operation arm 117a of the seedling feed belt clutch 117. Thereby, when the operation lever 120 is rotated forward,
Seedling planting device clutch 116 and seedling feed belt clutch 1
17 is “OFF”, and the corresponding two-row seedling planting device 11
2, 112 and the seedling feed belts 111a, 111a stop operating.

As described above, by providing the operation lever 120 near the seat 12 of the traveling vehicle 2, the operation of the seedling planting device clutch 116 and the seedling feed belt clutch 117 can be performed without turning around while sitting on the seat 12. It can be carried out. When the operation lever 120 is provided on the traveling vehicle 2, the base of the operation lever 120 is located near the rotation fulcrum of the lifting link (the upper link 100 in the drawing) in a side view, so that the operation lever 120 is arranged along the lifting link. No excessive pulling or compressing force is applied to the cable 121 that has been cabled. The operation lever 120 and the seedling feed belt clutch 1
17 is not directly connected by the seedling feed belt clutch cable 122, but the seedling placement device clutch operating cable 1 is connected.
The seedling feeding belt clutch operating cable 12 is connected to the seedling feeding belt clutch 117 and the seedling feeding belt clutch 117.
With the configuration of connection with 2, the number of cables connecting the traveling vehicle 2 and the seedling planting section 4 can be reduced, and the cable routing can be simplified.

Further, a hydraulic valve which can be switched by the vertical movement of the front part of the center float 114 is provided, and when the front part of the center float 114 is lifted to an appropriate range or more by an external force from a field scene during seedling planting operation. The hydraulic oil pumped out of the transmission case 20 by the hydraulic pump 55 is sent to the elevating hydraulic cylinder 105, the piston is protruded, the elevating link device 3 is moved upward, and the seedling mounting part 4 is raised to a predetermined position. When the front portion of the center float 114 falls below an appropriate range, the lifting hydraulic cylinder 1
When the pressurized oil in the area 05 is returned to the transmission case 20, the elevating link device 3 is moved down to lower the seedling planting section 4 to a predetermined position, and the front portion of the center float 114 is in an appropriate range. (When the seedling planting part 4 is at the appropriate predetermined position)
Is provided to stop the pressurized oil in the elevating hydraulic cylinder 105 and to keep the seedling placement part 4 at a fixed position. Thus, the center float 114 is connected to the seedling planting section 4.
It is used as a ground sensor for automatic height control.

Reference numeral 130 denotes a planting elevating operation lever provided on the right side of the steering handle 14 at the front of the machine body, which is provided so as to be operable in the longitudinal direction of the machine body.
The power is turned on and off by operating the TO clutch, and the hydraulic valve which is switched by the vertical movement of the front part of the center float 114 is operated to move the seedling mounting part 4 up and down manually. It is also configured to be able to move. That is, when the planting elevating operation lever 130 is rotated forward to the position D2, the PTO clutch is engaged, the seedling planting section 4 is driven, and the hydraulic valve is switched by the up and down movement of the center float 114. Become. Conversely, when the planting elevating operation lever 130 is rotated rearward to the U position, the PTO clutch is disconnected, the operation of the seedling planting section 4 is stopped, and the hydraulic valve forcibly raises the seedling planting section 4. Side and the seedling planting section 4 is raised. Then, when the planting elevating operation lever 130 is set to the N position in the middle of the operation stroke, the PTO clutch is disengaged, the operation of the seedling planting section 4 is stopped, and the hydraulic valve stops the hydraulic oil in the elevating hydraulic cylinder 105 from flowing in and out. The seedling placement part 4 is switched to a position where the seedling placement part 4 is held at a fixed position, and the seedling placement part 4 is moved by the planting elevating operation lever 13.
The seedling planting section 4 is not raised or lowered while being held at the position when the 0 is operated to the intermediate position. In addition, the planting elevating operation lever 1
When the position 30 is set to the D1 position, the PTO clutch is disengaged and the hydraulic valve is switched to an automatic control state by the vertical movement of the center float 114. In addition, the planting elevating operation lever 13
Numeral 0 is configured to be locked at each operation position (D2, D1, N, U) by well-known locking means using a cam so that the operation position is maintained.

Then, the planting elevating operation lever 130
Is connected to the shift lever 81 via an operation cable 131. When the shift lever 81 is operated to the "reverse" position, the planting elevating operation lever 130 is switched to the U position. That is, when the shift lever 81 is operated to the "reverse" position, the PTO clutch is automatically disengaged, the operation of the seedling planting section 4 is stopped, and the seedling planting section 4 is forcibly raised. It is not necessary to operate the planting raising / lowering operation lever 130, so that the operation is simplified, and the PTO clutch is automatically disengaged when the vehicle reverses, the operation of the seedling planting section 4 is stopped, and the seedling planting section 4 is forcibly raised. Thus, it is possible to prevent the seedling planting portion 4 from being damaged by colliding with a ridge or the like, and it is safe, of course.

Since the speed change lever 81 and the planting elevating operation lever 130 are on the same right side of the machine body, both levers 81 and 130 are frequently operated during seedling planting work in the field. When turning the aircraft with the
1 and the operation of raising and lowering the seedling planting section 4 and operating the clutch by means of the planting raising / lowering operating lever 130 are performed successively.
1 and the planting elevating operation lever 130 can be operated in the front-rear direction, the operation can be performed efficiently, and the operability is very good. Note that the speed change lever 81 and the planting elevating operation lever 130
May be provided on the left side of the fuselage.

Further, the transmission lever 81 is connected to a throttle lever for increasing or decreasing the number of revolutions of the engine 10, so that the throttle lever is automatically operated when the transmission lever 81 is operated at a low speed (near the neutral position). When the engine 10 is configured to reduce the rotation speed, the impact at the time of stopping (starting) the aircraft is reduced, and the traveling performance is good and the safety is high.

Further, a main shift lever is provided at the front of the body (for example, near the left side of the steering handle 14).
The main shift shifter 250 can be operated so that the main shift can be switched to "forward", "reverse", "neutral", and "road running" with the main shift lever, and the shift lever 81 sets the main shift to "forward". If only the "reverse" can be switched, the operation linking mechanism of the shift lever 81 is simplified, and the main shift can be switched to "forward" or "reverse" by the shift lever 81 during seedling planting work in the field. In most cases, there is no problem in the work, and the operation mistake of the gearshift lever 81 (that is, "running on the road" by mistake during seedling planting work) is reduced.

Reference numerals 463 and 463 denote left and right fertilizer application devices, which are fixed to the upper ends of the left and right link support frames 26 and 26, respectively, and each fertilizer application tank 464 for two lines.
And a fertilizer feeding device 465 attached to a lower portion of each fertilizer tank 464 and feeding a specific amount of granular fertilizer in the fertilizer tank 464, and a transparent fertilizer pipe for guiding the fertilizer fed by the fertilizer feeding device 465. 466.., A fertilizing groove fixed to the center float 114 and the side floats 115, 115, digging a fertilizing groove in a field beside the seedling planting position, and guiding the granular fertilizer guided by the fertilizing pipe 466. . 467... still,
Reference numeral 468 denotes a drive arm for driving the fertilizer feeding device 465... 468, which is connected to a fertilizer drive case 469 fixed to the left link support frame 26, and is connected to the fertilizer drive case 469 by the transmission shaft 62. It is configured to transmit power.

The left and right fertilizers 463 and 463 are
Each is arranged above the right and left rear wheels 8,8. In addition, two fertilizer feeding devices 465 and 4 of the left fertilizer 463 are provided.
65 and the fertilizer application pipes 466 and 466 are arranged at positions sandwiching the left rear wheel 8, respectively, and two fertilizer feeding devices 465 and 465 of the right fertilizer 463 and the fertilizer pipes 466 and 46.
The reference numerals 6 are arranged at positions sandwiching the right rear wheel 8. Therefore, the left and right fertilizers 463 and 463 can be arranged at a lower position despite being arranged at positions above the left and right rear wheels 8, 8, respectively. It has good body running performance and can be made compact.

The left and right fertilizers 463 and 463 are disposed above the left and right rear wheels 8 and 8 respectively.
Are arranged in front of the U-shaped seedling planting section frame 110 in a plan view, so that the fertilizing pipes 466 can be formed at a relatively steep angle, and the granular fertilizer is fed to the fertilizer feeding device 46.
5 can be guided by the fertilizer application pipes 466 to the respective groovers 467 by natural fall from the fertilizer, and there is no need for a conventional fertilizer transport device such as a transport device that uses the wind force of a blower or a spiral feed device. Thus, it is possible to obtain a small-sized riding rice transplanter with an inexpensive and simple fertilizer application device.

FIGS. 18 and 19 show a second embodiment.
Each of the left and right fertilizers 463 has a mounting piece 50.
0.500 are provided.
0 is attached to the upper right and left ends of a U-shaped support frame 501 having a base fixed to the upper end of the connecting frame 102 at the rear end of the elevating link device 3 by fixing bolts 503 and 503; It is configured so that it can be changed to a state in which it is fastened to the upper ends of the frames 26, 26 with fixing bolts 503, 503.

At the time of planting seedlings, the left and right fertilizers 463 are used.
By attaching each mounting piece 500 of the 463 to the upper right and left ends of the U-shaped support frame 501 at the rear end of the elevating link device 3 by tightening the fixing bolts 503 and 503, the seedlings are planted during the seedling planting operation. Even if the height is automatically controlled so that the planting section 4 is at an appropriate predetermined position, the left and right fertilizers 463 and 463 move up and down together with the seedling planting section 4. 467.. Does not change (each fertilizing pipe 466).
Since there is not much change in the posture of ...), the left and right fertilizer 463
The fertilizer fed out from the fertilizer feeding device 465... Of 463 is guided to each groove producing device 467... By each fertilizing pipe 466. Further, since a rolling shaft 103 is provided behind the connecting frame 102 to which the left and right fertilizers 463 and 463 are attached, and the seedling planting portion 4 is connected in a freely rotatable manner, the seedling planting portion is provided at the time of seedling planting. 4 left and right fertilizer applicator 463/463
Has no effect, and the seedling planting section 4 can perform a favorable rolling operation to perform an appropriate seedling planting operation.

Therefore, an appropriate fertilizing operation and an appropriate seedling planting operation can be performed. Further, when moving between fields, traveling on the road, and transporting the machine by truck, the left and right fertilizer
3 and 463 are attached to the upper ends of the left and right link support frames 26 and 26 with fixing bolts 503 and
By tightening and mounting at 503, the left and right fertilizer application devices 463 and 463 are fixed at a relatively low position of the riding type traveling vehicle 2, and become stable in a state where the machine center of gravity is low. The vehicle can be moved and run on the road, and the vehicle can be prevented from tipping over when transporting the vehicle by truck or the like, so that the vehicle is safe.

[Brief description of the drawings]

FIG. 1 is a side view of a riding type rice transplanter.

FIG. 2 is a plan view of a riding type rice transplanter.

FIG. 3 is a side view in which a part of the traveling vehicle is omitted.

FIG. 4 is a plan view in which a part of the traveling vehicle is omitted.

FIG. 5 is a plan sectional view of the transmission case 20.

6 is a side view of the transmission case 20. FIG.

FIG. 7 is a plan view for explaining the operation of cutting off transmission to the left and right rear wheels 8, 8;

FIG. 8 is an enlarged plan view for explaining the operation of cutting off transmission to the left and right rear wheels 8, 8;

FIG. 9 is a diagram showing a method of mounting a fuel tank.

FIG. 10 is a plan sectional view of a second belt transmission.

FIG. 11 is a side view of the speed change operation mechanism.

FIG. 12 is a plan view of a speed change operation mechanism.

FIG. 13 is a plan view of a lever guide of the shift lever.

14 is a side view for explaining the operation of the planting elevating operation lever 130. FIG.

15 shows a planting elevating operation lever 130 and a speed change lever 81. FIG.
It is a side view for effect | action explanation which shows cooperation with this.

FIG. 16 is a view showing an operation mechanism of a seedling planting device clutch and a seedling feed belt clutch.

FIG. 17 is a plan view of a lever guide of a different shift lever.

FIG. 18 is a side view of a riding type rice transplanter showing a second embodiment.

FIG. 19 is a plan view of a riding rice transplanter showing a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Riding type seedling transplanter (riding type rice transplanter) 2 Riding type traveling vehicle 3 Elevating link device 4 Seedling planting part 7 Front wheel 8 Rear wheel 12 Seat 110 Seedling planting frame 463 Fertilizer application device 464 Fertilizer application tank 465 Fertilizer feeding device 466 Fertilizing pipe 467 Grooving device

Claims (2)

[Claims] 1. A riding type seedling plant in which a seedling mounting portion 4 is mounted on a riding type traveling vehicle 2 equipped with a front wheel 7 and a rear wheel 8 and a seat 12 via a lifting link device 3 so as to be able to move up and down. A fertilizer application device 4 that disposes a fertilizer tank 464 of the fertilizer device 463 at a position above the rear wheel 8 behind the seat 12 in a side view and feeds a predetermined amount of fertilizer from the fertilizer tank 464.
65. A riding type seedling-planting machine with a fertilizer device, wherein 65 is arranged at a position sandwiching the rear wheel 8 in a plane view of the body. 2. A groove generator 467 is provided on the rear side of the rear wheel 8 and in front of the seedling planting section frame 110 of the seedling planting section 4 in a side view of the machine body.
The fertilizer application pipe according to claim 1, further comprising a fertilizer pipe (466) for guiding the fertilizer fed from the fertilizer feeding device (465) to the groove generator (467).