JP3107537B2 - Riding seedling planter - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding-type seedling transplanter having a seedling-planting device mounted on a rear portion of a riding-type traveling vehicle body. 2. Description of the Related Art In a riding-type seedling transplanter, it is necessary to have a small body structure in which the front-rear length of the body is short so that the work can travel in a soft paddy field satisfactorily and with good workability. Also,
In order to obtain good running performance even with a small aircraft and light weight, the steering seat should be positioned between the front wheel axle and the rear wheel axle so that the difference in the ground load of the front and rear wheels does not greatly occur due to the weight difference of the driver. It was also necessary to arrange it above and below the central position. By the way, in order to obtain a small riding type seedling transplanter, the front-rear distance between the front wheel and the rear wheel is made as short as possible to shorten the front-rear length of the vehicle body. If the distance between the front and rear wheels is too short, the running stability of the vehicle body deteriorates. Therefore, in order to reduce the size of the fuselage, it is necessary to shorten the front-rear distance between the front wheels and the rear wheels as much as possible in order to shorten the front-rear length of the vehicle body, and to improve the running stability of the vehicle body. The arrangement of the front wheels and the rear wheels must be determined while satisfying the conflicting point of making the front-rear distance between the wheels and the rear wheels as long as possible in a well-balanced manner. [0004] Therefore, the present invention arranges the control seats so that the running performance of the vehicle body is improved, and satisfies a good balance between shortening the longitudinal length of the vehicle body and improving the running stability of the vehicle body. It is an object of the present invention to obtain a riding-type seedling plant in which front wheels and rear wheels are arranged. According to the present invention, in order to solve the above-mentioned problems, a seedling planting device 27 is mounted on a rear portion of a riding type traveling vehicle body having front wheels 6 and rear wheels 8. In a riding-type seedling-planting machine in which a control seat 15 is disposed on the riding-type traveling vehicle body and a steering handle 14 is disposed in front of the steering seat 15, the front wheel 6 is driven by the steering wheel 14 when the axle is viewed from the side of the vehicle body. The rear wheel 8 is disposed below the front end of the steering wheel 14 and forward of the rear end of the steering wheel 14. Characterized in that the front end of the vehicle body is positioned so as not to protrude forward from the front end position of the front wheel 6 when viewed from the side of the vehicle body. It is what it was. In the riding type seedling-planting machine according to the present invention, the control seat 15 is configured as described above in relation to the positional relationship between the front wheels 6 and the rear wheels 8, so that the weight difference of the pilots causes There is no large difference in the grounding load between the front and rear wheels 6 and 8, so that the running performance is good. In addition, the front wheels 6 are configured as described above in relation to the steering wheel 14, and Since the front end of the vehicle body is configured as described above in relation to the wheel 6, the front wheel 6 is arranged forward with the steering handle 14 toward the front end of the vehicle body, and the position of the front wheel 6 is The rear wheels 8 are arranged so as to satisfy the above arrangement of the cockpit 15 in relation to
It is possible to obtain a riding-type seedling transplanter that satisfies a good balance between shortening the front-rear length of the vehicle body and improving the running stability of the vehicle body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to the accompanying drawings. 1 is a fuselage having a front transmission case 3 fixed to a front end of a cylindrical frame 2 and a rear transmission case 4 fixed to a rear end. A lateral case 3a protruding outward is protruded on both left and right sides of the front transmission case 3, and a boss 4a having a drive shaft therein is provided on both left and right sides of the rear transmission case 4, and a rear end is provided at the tip of the boss. A chain case 5.5 facing downward is attached. Reference numeral 6 denotes a front wheel, which is provided on the outer end side of the horizontal case 3a via a transmission case 7 which faces downward. Reference numeral 8 denotes a rear wheel, which is rotatably mounted on the rear end of the chain case 5 so as to be driven. Reference numeral 9 denotes a prime mover mounted on the fuselage 1. Reference numeral 10 denotes a frame, which is a square front frame portion 10a which is wide in the left-right direction in plan view, and the front frame portion 10a.
a, the front end of which is fixed to the intermediate frame 1 facing rearward and upward
0b and a rear frame portion 10c having a front end fixed to the intermediate frame portion 10b and extending horizontally rearward. The front frame 10a is fixed to the body 1. A support 11 has a base fixed to a bracket 22 mounted on the rear side of the transmission case 4 and is erected upward. The upper end of the support is fixed to the rear frame 10c. Reference numeral 12 denotes a body cover, which is formed on the upper surface of the front frame portion 10a of the frame 10 in such a manner that the left and right wide steps are stretched and fixed to the upper surface of the front frame portion 10a. 12c, extending to the intermediate frame portion 10b and the rear frame portion 10c to cover the motor 9, and a right and left portion extending from the left and right wide step portion 12a to the front end of the vehicle body through the left and right sides of the case portion 13 described below. It is composed of passage portions 12b. Reference numeral 13 denotes a case portion having a steering handle 14 disposed on an upper portion thereof, which is provided upright at the front left and right central portions of the left and right wide step portion 12a. Reference numeral 15 denotes a control seat, which is disposed above the prime mover 9 and is supported by a rear frame portion 10c. Accordingly, the body cover 12 has left and right passages 12b extending from the left and right wide step portions 12a to the front end of the vehicle body through the left and right sides of the case portion 13 and from the rear of the left and right wide step portions 12a. A control seat 15 is disposed on the upper part in a shape 12c standing upright, and guide portions 16 for operation levers such as a planting clutch lever 17 and a hydraulic operation lever 18 are provided at lateral positions of the control seat 15. The configuration is provided. Numeral 19 denotes an elevating link. The base of a single upper link 19a and a pair of left and right lower links 19b made of a spring plate is pivotally connected to the column 11, and the upper and lower links 19a.
The rear end of 19b is pivotally connected by a hitch frame 20 to form a parallel link. Reference numeral 21 denotes a hydraulic cylinder device,
The base of the cylinder 21a is pivotally attached to the bracket 22 to which the upper link 19a is attached.
Is pivoted to And, this hydraulic cylinder device 21
Is operated by the hydraulic circuit shown in FIG. In the figure, reference numeral 23 denotes a hydraulic pump, 24 denotes a switching valve, 25 denotes a hydraulic tank, and 26 denotes a relief valve. Numeral 27 denotes a seedling plant, and vertical transmission cases 28b and 28 extend in the front-rear direction on both left and right sides of a horizontal transmission case 28a.
b, a seedling mounting table 2 having a front side facing upward and having an inclined shape on the upper side of a planting portion transmission case 28 having a U-shape in plan view to which the front side of b is attached.
9 is supported on the right and left reciprocating and the same freely via the supporting frames 30 and 31,
At the rear end of the vertical transmission case 28b
2 is attached via the crank and the swing arm, and
Side floats 33, 33 and a central float 34 are disposed below the vertical transmission cases 28b and 28b and at the center thereof,
The rear part is pivotally attached to the planting part transmission case 28 so that the front part can freely move up and down. Reference numeral 35 denotes a rear mounting bracket, and reference numerals 36 and 37 denote front mounting enlargement / reduction links. Numeral 38 denotes a lead cam shaft, which is supported on the left and right vertical transmission cases 28b and 28b in a manner to be connected thereto.
The lead metal 39 is fitted and supported by engaging the lead claws with the lead metal 39. The lead metal 39 is connected to the back side of the seedling mounting table 29, and the seedling mounting table 29 is reciprocated right and left. ing. Reference numeral 40 denotes a rubber bellows body that covers the lead cam shaft 38. The seedling plant 2 constructed as described above
7 is rotatably mounted on the hitch frame 20 via a shaft in the front-rear direction, and from the rear transmission case 4 side, each transmission section on the seedling planting apparatus side is driven by a transmission shaft 41 provided with a universal joint. It is provided to be. Reference numeral 42 denotes a spare seedling mounting table,
And a cage 42 formed by a thin wire rod at the bottom of a frame 42a formed by a pipe.
b is integrally attached, and the spare seedling mounting table 4
Reference numeral 2 denotes a frame 4 attached to the rear frame portion 10c from the front side together with the seedling raising box.
It is configured so that the upper surface 2a can be accommodated and placed by sliding. Reference numeral 43 denotes an operating tool for operating a main clutch provided with a base on the side of the body 1, and the operating portion includes a hole 1 provided in the passage portion 12 b located on the side of the case portion 13.
6 ′ so as to protrude from the body cover 12. In the drawings, reference numeral 44 denotes a shift lever, and 45 denotes a throttle lever. In the configuration of the above example, after the seedling planter gets into the paddy field, the seedlings are placed and accommodated in the seedling mount 29 and the spare seedling mount 42, and the power is transmitted to each part to start the seedling planting operation. Then, the seedling plant 27 is slid with the center and side floats 33 and 34 set on the top soil surface of the paddy field, and the seedling mounting rod 29 in which the seedling mounting rod 32 reciprocates left and right moves one seedling. Divide them one by one and plant them on the leveled topsoil surface. Then, when the number of seedlings in the seedling mounting table 29 decreases, the seedlings in the spare seedling mounting table 42 may be taken out and replaced in the seedling mounting table 29. When approaching the furrow ridge, the operator interrupts the work by approaching the tip of the step stand 12 of the seedling planter to the furrow A, and then the operator moves the vehicle body from the left and right wide step part 12a to the side of the case part 13. The vehicle descends from the vehicle body to the ridge through the passage portion 12b reaching the front end, and the seedlings previously placed on the ridge are loaded on the spare seedling mounting table. At this time, the operator can easily move between the control seat 15 and the ridge, and the workability is very good. Further, the passage portion 12b on the side of the case portion 13
The operation tool 4 for forming the hole 16 'and operating the main clutch
3 and a body cover 12 having a shape 12c erected above the step portion 12a and provided with guide portions 16 and 16 of operation levers 17 and 18 at side positions of the control seat 15. , The steering wheel 14 and various operating tools 17 and 18 are provided to the operator sitting on the control seat 15 despite the small size of the vehicle body. 43 is an arrangement with good operability, and its maneuverability is very good. In particular, in this riding type seedling transplanter, since the control seat 15 is configured as described above in terms of the positional relationship between the front wheels 6 and the rear wheels 8, the front and rear wheels 6, 8 are changed due to the difference in weight of the pilot. The running performance is improved without a large difference in the grounding load, and the front wheel 6 is configured as described above in relation to the steering wheel 14, and the position of the front wheel 6 with respect to the front wheel 6. Since the front end of the vehicle body is configured as described above, the front wheel 6 is arranged forward with the steering handle 14 on the front end side of the vehicle body, and the rear wheel 8 is positioned relative to the front wheel 6 so arranged. Are arranged so as to satisfy the above arrangement of the pilot seat 15,
It is possible to obtain a riding type seedling transplanter that satisfies a good balance between shortening the front-rear length of the vehicle body and improving the running stability of the vehicle body.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall side view of a riding type seedling transplanter. FIG. 2 is an overall plan view of the riding type seedling transplanter, which is partially broken. FIG. 3 is an explanatory diagram of a hydraulic circuit operation. [Description of Signs] 6 Front wheel 8 Rear wheel 14 Steering handle 15 Steering seat 27 Seedling plant

Continuation of front page                   (56) References JP-A-56-160272 (JP, A)                 52-145130 (JP, U)                 Shokai Sho 53-107509 (JP, U)                 52-90423 (JP, U)                 Shokai Sho 51-140719 (JP, U)                 US Patent 3057428 (US, A)

Claims (1)

(57) [Claims] A seedling plant 27 is mounted at the rear of the riding type traveling body having the front wheels 6 and the rear wheels 8, and the steering seat 15 is disposed on the riding type traveling body, and the steering handle 14 is provided in front of the steering seat 15. In the riding-type seedling-planting machine in which the front wheels 6 are arranged, the axle of the front wheel 6 is positioned below the steering handle 14 behind the front end of the steering handle 14 and in front of the rear end of the steering handle 14 in a side view of the vehicle body. The rear wheel 8 is arranged so that the pilot seat 15 is positioned between the front and rear wheels 6, 8 in a side view of the vehicle body.
Place to be positioned in the longitudinal center position above each axle, the vehicle body front portion, prior to the front end position of the front wheels 6 when the body is viewed from the side
A riding type seedling transplanter characterized in that it is located so as not to protrude in the direction .