JPH08252009A - Riding rice transplanter with fertilizer application - Google Patents

Abstract

(57) [Summary] (Corrected) [Problem] To improve the front-rear balance of a riding type rice transplanter. SOLUTION: The left and right front wheels 2 and the rear wheel drive case 25 provided in a steering case 22 operated by a steering handle 21.
In the riding type rice transplanter in which the linking mechanism 7 is provided with the seedling planting device 8 movably up and down at the rear part of the riding type traveling vehicle body 12 having the left and right rear wheels 3 provided at the rear end of the left and right front wheels 2 in a side view of the body. The engine 4 and the mission case 15 are arranged in front of the fertilizer application tank 52 and the fertilizer feeding device 53 of the fertilizer application device 52 are provided above the pivot parts 35 and 36 of the link mechanism 7 at the rear of the riding type vehicle body 12. A transmission case 56, to which the driving force is transmitted from the mission case 15 side, is provided in the vicinity of the pivot portions 35 and 36 of the link mechanism 7, and the transmission case 5 is provided.
6, the fertilizer feeding device 53 above the fertilizer application drive device 58.5
A riding-type rice transplanter equipped with a fertilizer application, which is driven via the 9/60 and the rear seedling planting device 8 is driven via the PTO transmission shaft 61.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding-type rice transplanter with a fertilizer application device having a good front-rear balance of the machine body, excellent running stability, and a simple drive path to the seedling planting device and the fertilizer application device. It is a thing.

[0002]

2. Description of the Related Art As a conventional technique of this kind, as disclosed in Japanese Patent Laid-Open No. 61-111617, a transmission case and an engine are separately assigned to the front and rear of the left and right front wheels. There is a riding type traveling vehicle that is equipped with a seedling planting device and a fertilizer applying device. The seedling planting device and the fertilizer applying device are driven by a rear wheel transmission case that is transmitted from a transmission case by a transmission shaft.

However, in the riding type rice transplanter with fertilizer application, the engine and the fertilizer tank of the fertilizer application are arranged behind the rear ends of the left and right front wheels. In other words, the engine and fertilizer are stored and heavy. Since the weight of the fertilizer tank is placed almost evenly on the left and right front wheels and the left and right rear wheels, the large weight of the seedling planting equipment mounted on the rear part of the riding type vehicle body is the mission case installed on the front part of the left and right front wheels. However, the entire rear-mounted rice transplanter with a fertilizer application had a large rear load and had a very poor front-rear balance.

In general, there is an inter-plant speed change device that changes the drive speed to the seedling planting device with respect to the running speed in order to change the planting stock of planted seedlings. In this conventional structure, the rear wheel transmission is used. Since the seedling planting device and fertilizer applying device are configured to be driven from the case, it is necessary to provide a transmission system between stocks in the rear wheel transmission case, and it is necessary to allocate the transmission device to the transmission case and the rear wheel transmission case. In addition to having a very complicated structure, the rear wheel transmission case becomes large and the rear load of the machine body becomes heavy, which causes deterioration of the front-rear balance.

[0005]

In order to solve the conventional problems, the present invention is provided in the left and right front wheels 2 and the rear wheel drive case 25 provided in the steering case 22 operated by the steering handle 21. Riding vehicle body 1 having left and right rear wheels 3
In a riding-type rice transplanter equipped with a linking mechanism 7 at the rear part of the vehicle 2 so as to be vertically movable, an engine 4 and a mission case 1 are provided in front of the rear ends of the left and right front wheels 2 in a side view of the vehicle body.
5, the fertilizer tank 9 of the fertilizer application device 52 and the fertilizer feeding device 53 are provided above the pivotal attachment parts 35 and 36 of the link mechanism 7 at the rear of the riding type vehicle body 12, and the pivotal attachment parts 35 and 35 of the link mechanism 7 are provided. A transmission case 56 to which a driving force is transmitted from the transmission case 15 side is provided near 36, and the fertilizer feeding device 53 above the transmission case 56 is provided with the fertilizer application drive device 58.
A riding-type rice transplanter with a fertilizer application, which is driven via 59.60 and the rear seedling planting device 8 is driven via a PTO transmission shaft 61.

[0006]

According to the present invention, the riding type vehicle body 12 has the left and right front wheels 2 provided in the steering case 22 operated by the steering handle 21 and the left and right rear wheels 3 provided in the rear wheel drive case 25. In the riding-type rice transplanter equipped with the link mechanism 7 at the rear part so that the seedling planting device 8 can be moved up and down, the engine 4 and the mission case 15 are arranged in front of the rear ends of the left and right front wheels 2 in a side view of the vehicle. The fertilizer application tank 9 of the fertilizer application device 52 and the fertilizer feeding device 53 are provided above the pivotal attachment portions 35 and 36 of the link mechanism 7 at the rear of the model traveling vehicle body 12, and the mission case 15 is provided near the pivotal attachment portions 35 and 36 of the link mechanism 7. A transmission case 56 to which a driving force is transmitted from the side is provided, and an upper fertilizer feeding device 53 is driven from the transmission case 56 via fertilization drive devices 58, 59, 60, and
Since it is a riding type rice transplanter with a fertilizer application in which the rear seedling planting device 8 is driven via the PTO transmission shaft 61, the weight of the seedling planting device 8 mounted on the rear part of the riding type traveling vehicle body 12 is large on the left and right front wheels. This is offset by the weight of the engine 4 and the mission case 15. Still, since the rear wheel transmission case may have a small configuration, the riding type rice transplanter with a fertilizer application has a very good front-rear balance and excellent running stability. Will be
Can perform very good rice planting work.

Further, the fertilizer feeding device 53 and the seedling planting device 8 can be driven with a simple structure, and the link mechanism 7 is pivotally attached using the fertilizing tank 9 of the fertilizer applying device 52 and the lower space of the fertilizer feeding device 53. Since the parts 35 and 36 and the transmission case 56 can be arranged, the overall structure of the riding type rice transplanter with a fertilizer application device can be downsized.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A riding type rice transplanter equipped with a fertilizer application, which is an embodiment of the present invention, will be described in detail with reference to the drawings. Reference numeral 12 denotes a riding type traveling vehicle body, which is a left and right frame 13 that constitutes the airframe 1.
The engine 4 is mounted on the upper surface of the central portion of the front-rear direction 14 and the mission case 15 is attached to the left side surface of the engine 4 with the bolt 1
6 are fixed to each other, and the engine 4 and the mission case 15 have a so-called direct connection type configuration. Mission case 1
The left and right cases 15a and 15b are integrally connected with bolts 17 to form an L-shape when viewed from the rear. It is firmly connected. Then, the transmission case 15 is attached to the engine case 4 by the gearshift lever 31.
A speed change mechanism for changing the rotational driving force of the vehicle and a front wheel differential mechanism are incorporated.

Reference numerals 20 and 20 are left and right front axle cases, which are fixed to the left and right side portions of the mission case 15. 2.2 is a left / right steering drive front wheel, which is fitted to the lower part of the left / right front axle case 20/20 and is rotated by a steering handle 21 described later.
It is mounted on 22.

Reference numeral 6 denotes a steering transmission case having a speed change gear inside, which is fixed to the front end portions of both the left and right frames 13 and 14, and a handle post 23 is fixed to the upper portion thereof, and the upper end of the handle post 23 is fixed. A steering handle 21 is provided in the section. Further, at the lower part of the steering transmission case 6, there is provided a link 24 as a steering transmission mechanism whose rear end is connected to the left and right steering cases 22 and 22. When the steering handle 21 is turned, the steering transmission case 22 is rotated. Left and right steering cases 22.2 via a speed change gear / link 24 in 6
2 is rotated around the vertical axis so that the left and right steering front wheels change directions.

A rear wheel drive case 25 is fixed to the rear end portions of both the left and right frames 13 and 14, and the left and right drive rear wheels 3.3 are mounted on both left and right sides thereof. Two
Reference numeral 6 denotes a transmission shaft that transmits power from the transmission case 15 to the rear wheel drive case 25. And the rear wheel drive case 2
The left and right side clutches and the left and right side brakes for the left and right driving rear wheels 3 and 3 are built in the transmission mechanism inside the left and right clutch pedals provided at the front part of the step 27 provided at the front of the engine 4. The left and right side clutches are disengaged and the left and right side brakes are activated by depressing 28 and 29. That is, the rear drive wheel 3 on the side where the left and right clutch pedals 28 and 29 are depressed
・ The drive of 3 is stopped and the brake works.

Reference numeral 30 denotes a vehicle body cover molded by FRP, in which an engine cover portion that covers the periphery of the engine 4 and steps 27 provided on the front and left and right sides of the engine 4 are integrally formed, and left and right frames are formed. It is fixed on 13 and 14. 5 is a control seat, which is a vehicle body cover 30
Is attached to the top of the. Reference numeral 10 denotes a preliminary seedling mounting table having a shallow plate-like shape composed of a low plate and four side walls, and an inner surface thereof serving as a seedling mounting portion 11. Each of the left and right sides of the mission case 15 has a base end. Left and right fixed seedling frame 3
It is fixed to the upper end of 2.32 so that a seedling raising box in which seedlings are stored can be placed on the seedling placing portion 11 therein.

Reference numeral 7 is a link mechanism composed of an upper link 7a and a lower link 7b. The base ends of the upper link 7a and the lower link 7b are support frames 33, 33 fixed to the left and right frames 13, 14. 34 and 34 are pivoted 35 and 36, and the rear ends thereof are pivoted 39 and 40 on a vertical frame 38 provided with a rolling shaft 37 that supports the seedling planting device 8 in a freely rolling manner.

Reference numeral 41 denotes a hydraulic cylinder device in which the base of the cylinder is pivotally attached to the rear side of the transmission case 15 and the rear end of the piston is pivotally attached to a swing arm 7c integral with the upper link 7a. Reference numeral 42 denotes a front cover formed of synthetic resin that covers the periphery of the handle post 23, and is fixed to the upper surface of the front end of step 27. The shift lever 31 is provided on the upper portion of the front cover 42.

Reference numeral 43 is a main clutch pedal provided on the left side of the front cover 42. A fuel tank 4a is fixed to the upper ends of the support frames 33 and 33 fixed to the left and right frames 13 and 14, and is provided to supply fuel to the engine 4 by a fuel pipe 4b. The seedling planting device 8 includes a planted transmission case 44 that doubles as a frame that is mounted on the rolling shaft 37 of the vertical frame 38 so as to be freely rotatable, and a lower support member 45 and an upper support member 46 provided on the planted transmission case 44. The seedling mounting table 47 supported by and reciprocating in the left-right direction of the body, and the seedling mounting table 47 mounted on the rear end of the planting transmission case 44 divides one seedling from the lower end of the seedling mounting table 47 to plant in the field. A planting device 48 to be attached, and a central grounding float 50 and a left and right grounding float 51, which are ground leveling bodies in which a rear part of the planting transmission case 44 is pivotally supported 49 and its front part is vertically swingably mounted. It is composed of 51 etc. The left and right leveling floats 51, 51 are respectively arranged behind the left and right driving rear wheels 3.3, and level the field disturbed by the left and right driving rear wheels 3.3 and the seedling planting device 48 seedlings. It is provided to level the area in front of the field where the plants are planted.

Reference numeral 52 denotes a fertilizer application device, which is composed of four fertilizer tanks 9 made of transparent resin fixed to the upper ends of the support frames 33 and 33 fixed to the left and right frames 13 and 14 of the riding type vehicle body 12. And four fertilizer feeding devices 53, which are integrally attached to the lower part of each fertilizing tank 9 and feed the granular fertilizer in the fertilizing tank 9 by a fixed amount, and guide the fertilizer fed by the fertilizer feeding device 53. 4 transparent fertilizing pipes 54 ..., and the granular fertilizer guided by the fertilizing pipe 54 by digging the fertilizing groove in the field on the side of the seedling planting position, which is fixed to the central leveling float 50, the left and right leveling floats 51, 51. It is constituted by four groove making devices 55 ... Which guide the drop into the groove. The fertilizer pipe 54 is divided into an upper pipe 54a and a lower pipe 54b slidably fitted on the upper pipe 54a.
When the seedling planting device 8 is moved up and down by the link mechanism 7, the length of the external fertilization pipe 54 is automatically changed, and the fertilization pipe 5
The fertilizer application pipe 54 is configured to be always linear so that the granular fertilizer is appropriately flowed down and guided in the inside of the container 4. still,
Two fertilizer application tanks 9 are provided on both the left and right sides of the fuel tank 4a, and the front part of the fertilizer application tank 9 intervenes between the control seat 5 and the spare seedling mounting table 10 in a plan view and the lower part in a side view. It is arranged so as to be located at a position lower than the upper end of the seedling placing portion 11 of the preliminary seedling placing table 10. A lid 9a is provided on an upper part of each fertilizer tank 9 ... And a rear part of the fertilizer tank 9 ...

Reference numeral 56 denotes a transmission case fixed to the left and right frames 13 and 14, and power is transmitted from the transmission case 15 via a transmission shaft 57, and the transmission case 56 is formed.
The rotation arm 58 provided on the side wall of the is rotated. Then, the rotation of the rotary arm 58 is transmitted to the drive arm 60 of the fertilizer feeding device 53 by the rod 59, and the fertilizer feeding device 53 is configured to feed the granular fertilizer in the fertilizer application tank 9 by a predetermined amount. There is.
The rotary arm 58, the rod 59, and the drive arm 60 constitute a fertilizer drive device.

61 is a universal joint 62 at both ends
A PTO transmission shaft having 62, a transmission case 56
It is provided so as to transmit the power of the above to the planting transmission case 44 of the seedling planting device 8. Reference numeral 63 denotes a hydraulic valve provided between the front surface of the central grounding float 50 and the planted transmission case 44. When the front portion of the central grounding float 50 is lifted by an external force beyond an appropriate range, a mission case is provided. The hydraulic pump 64 mounted on the left side surface of the pump 15 sends the pressure oil pumped out from the inside of the transmission case 15 to the hydraulic cylinder 41 so that the piston is projected and the link mechanism 7 is moved upward to move the seedling planting device 8 to a predetermined position. Further, when the front part of the central ground leveling float 50 falls below the proper range, the pressure oil in the hydraulic cylinder 41 is returned to the inside of the mission case 15 and the link mechanism 7 is moved downward to set the seedling planting device 8 to a predetermined position. Hydraulic cylinder 41 when the front part of the central grounding float 50 is in the proper range (when the seedling planting device 8 is in the proper predetermined position). Stop the entry and exit of hydraulic fluid is provided to allowed to hold NaeUe device 8 at a fixed position.

Reference numeral 65 denotes an operation lever projecting from the vehicle body cover 30 and provided on the right side of the control seat 5 for operating a PTO clutch for connecting / disconnecting power to / from the transmission shaft 57 provided in the transmission case 15. The fertilizer application device 52 and the seedling planting device 8 are configured so that power can be turned on and off, and the hydraulic valve 63 can be operated to manually move the seedling planting device 8 up and down. That is, when the operation lever 65 is tilted forward, the PTO clutch is engaged, the fertilizer application device 52 and the seedling planting device 8 are driven, and the hydraulic valve 63.
Is in an automatic control state in which the central leveling float 50 is switched by vertical movement. Conversely, when the operating lever 65 is tilted backward, the PTO clutch is disengaged and the fertilizer application device 52 and the seedling planting device 8
Is stopped and the hydraulic valve 63 is forcibly switched to the side for raising the seedling planting device 8, and the seedling planting device 8 is raised. Then, when the operation lever 65 is set to the intermediate position of the operation stroke, the PTO clutch is disengaged, the operation of the fertilizer application device 52 and the seedling planting device 8 is stopped, and the hydraulic valve 63 stops the pressure oil from flowing in and out of the hydraulic cylinder 41. The planting device 8 is switched to a position where it is held at a fixed position, and the planting device 8
Is held at the position when the operation lever 65 is operated to the intermediate position, and the seedling planting device 8 does not move up or down.

Reference numeral 66 is a recoil starter for starting the engine 4, and its knob 67 is provided outside the vehicle body cover 30 on the right side of the operation lever 65. 68
Is the rear side of the mission case 15 and the rear wheel drive case 25.
Is a reinforcing frame provided between the front side surface and the front side surface. 69
Is a diff lock pedal of the front wheel diff mechanism in the transmission system of the driving front wheels 2.2, and is provided in front of the engine 4.

The machine frame 1 includes the left and right frames 13 and
14 and the left and right frames 13 and 14 are integrally connected to each other, and include a steering transmission case 6, a transmission case 15, a rear wheel drive case 25, and a reinforcing frame 68. The riding type rice transplanter configured as described above is put in a paddy field, the seedlings are placed on the seedling placing table 47, and the seedling raising box containing the seedlings is placed on the spare seedling placing table 10 ... When the knob 67 is pulled to start the engine 4 and the operating lever 65 is tilted forward to drive each part to move the machine body forward, the seedling planting device 8 is automatically controlled to the proper position to perform rice planting work. At that time, at the same time, the fertilizer application device 52 applies granular fertilizer to the field on the side of the seedling planting position.

And, in particular, the left and right front wheels 2 provided on the steering case 22 operated by the steering handle 21.
2 and a rear-wheel drive case 25 having left and right rear wheels 3.3 provided on the rear part of the passenger-type traveling vehicle body 12, the seedling planting device 8 is vertically movable by a link mechanism 7. The engine 4 and the transmission case 15 are arranged in front of the rear ends of the left and right front wheels 2 in a side view, and the fertilizer tank 9 of the fertilizer applicator 52 and the fertilizer tank 9 are provided above the pivot portions 35 and 36 of the link mechanism 7 at the rear of the passenger traveling vehicle body 12. A fertilizer feeding device 53 is provided, and a transmission case 56 to which a driving force is transmitted from the mission case 15 side is provided near the pivot parts 35 and 36 of the link mechanism 7, and the fertilizer feeding device 53 above the transmission case 56. Rotating arm 58 and rod 5 which are fertilizer drive devices
9. It is a riding type rice transplanter with a fertilizer application that is driven by the drive arm 60 and the rear seedling planting device 8 is driven by the PTO transmission shaft 61. Therefore, it is mounted on the rear part of the riding type traveling vehicle body 12. The weight of the seedling planting device 8 is offset by the weight of the engine 4 and the transmission case 15, which are heavy on the left and right front wheels, and since the rear wheel transmission case may have a small structure,
The riding-type rice transplanter with fertilizer application as a whole has excellent front-rear body balance and excellent running stability, enabling extremely good rice transplanting work.

Further, the fertilizer feeding device 53 and the seedling planting device 8 can be driven with a simple structure, and the link mechanism 7 is pivotally attached using the fertilizer tank 9 of the fertilizer applying device 52 and the lower space of the fertilizer feeding device 53. Since the parts 35 and 36 and the transmission case 56 can be arranged, the overall structure of the riding type rice transplanter with a fertilizer application can be reduced in size, and the PTO near the pivot parts 35 and 36 of the link mechanism 7 can be achieved. Since the front end of the transmission shaft 61 is located, even if the seedling planting device 8 is moved up and down by the link mechanism 7, the relationship between the link mechanism 7 and the PTO transmission shaft 61 does not change significantly. The drive of the planting device 8 becomes appropriate.

Since the fertilizer tanks 9 ... Are provided at a position lower than the seedling mounting portions 11.11 of the spare seedling mounting bases 10.10 provided on the left and right sides of the control seat 5, the spare seedling mounting bases 10.10 are provided. When replenishing seedlings to the seedling mounting table 47, the fertilizer application tank 9 does not get in the way and the seedling replenishing work can be performed efficiently.

[Brief description of drawings]

FIG. 1 is an overall side view of a riding rice transplanter with a fertilizer application device.

[Fig.2] Overall plan view of riding type rice transplanter with fertilizer application

FIG. 3 is an enlarged front view of an engine and a mission case.

[Explanation of symbols]

 2 front wheel 3 rear wheel 4 engine 7 link mechanism 8 seedling planting device 9 fertilizer tank 12 riding type traveling vehicle body 15 mission case 35/36 pivot part of link mechanism 7 fertilizer feeder 53 fertilizer feeding device 56 transmission case 58/59/60 Fertilizer drive device 61 PTO transmission shaft

Claims (1)

[Claims] 1. A left and right front wheel 2 and a rear wheel drive case 25 provided in a steering case 22 operated by a steering handle 21.
In the riding type rice transplanter in which the linking mechanism 7 is provided with the seedling planting device 8 movably up and down at the rear part of the riding type traveling vehicle body 12 having the left and right rear wheels 3 provided at the rear end of the left and right front wheels 2 in a side view of the body. The engine 4 and the mission case 15 are arranged in front of the fertilizer application tank 52 and the fertilizer feeding device 53 of the fertilizer application device 52 are provided above the pivot parts 35 and 36 of the link mechanism 7 at the rear of the riding type vehicle body 12. A transmission case 56, to which the driving force is transmitted from the mission case 15 side, is provided in the vicinity of the pivot portions 35 and 36 of the link mechanism 7, and the transmission case 5 is provided.
6, the fertilizer feeding device 53 above the fertilizer application drive device 58.5
A riding type rice transplanter with a fertilizer application characterized in that the rear seedling planting device 8 is driven via a PTO transmission shaft 61 while being driven via 9.60.