JPS6242661Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a riding rice transplanter in which a rice transplanter is attached to the rear of a passenger vehicle body via an elevating link.

Conventionally, this type of riding rice transplanter was developed in 1973.
There were structures disclosed in Japanese Utility Model Publication No. 73918 or Japanese Utility Model Application Publication No. 53-39722. That is, this conventional riding rice transplanter has a front wheel at the bottom of the front side of a vehicle body consisting of an engine stand, a transmission case, etc., a control handle is installed above the front wheel, an engine is installed below the handle, and A pilot's seat is installed at the upper end of the vehicle, the base side of a transmission case that extends rearward is attached to the lower part of the driver's seat, a rear wheel is attached to the rear end, and a rice transplanter is connected to the rear end of the vehicle body via a bracket. The structure was equipped with a lifting link.

However, with this conventional device, the base of the transmission case is attached to both left and right sides of the rear end of the vehicle body, and the driver's seat is located directly above it, so the driver's seat is attached to the rear wheels. There was a problem in that the rider's weight fluctuations could directly upset the front-rear balance of the riding rice transplanter, as the rider could not get close to the spindle of the rice transplanter.

This invention takes the following technical measures to solve the problems of the conventional device. That is,
This idea is based on the idea that ``a prime mover 4 is mounted on the front part of a vehicle body 1 consisting of an engine stand 3, a transmission case 2, etc.
A front wheel 9 is attached to the front lower part of this vehicle body 1, and
A pair of left and right transmission cases 10, 10 whose base side is attached to the rear of the vehicle body 1 in front of the rear end of the vehicle body 1 and extend rearward considerably longer than the rear end of the vehicle body 1.
are provided, and rear wheels 11, 11 are attached to the rear end side of the transmission cases 10, 10.
The vehicle body 1 extends rearward from the base side mounting position of
A pair of left and right transmission cases 10 and 10 are connected to the rice transplanting work machine 16 via a lift link 14 that is pivoted at a position higher than the lower end of the vehicle body 1, and extend rearward from the base side mounting position of the transmission cases 10, 10. transmission case 1
This riding rice transplanter has a pilot's seat 12 provided at a position above 0 and 10, and a control handle 5 disposed between the pilot's seat 12 and a prime mover 4. The structure was as follows.

With this invention, the above-mentioned configuration allows the lifting link of the rice transplanter to be easily attached to the rear end of the vehicle body, and its pivot position is raised, so that even in deep paddy fields, the lifting link can be easily attached to the rear end of the vehicle body. This eliminates the situation where the rice transplanter is propelled by sinking down, and the rice transplanting machine can be moved up and down reliably, and the soil surface of the paddy field is not disturbed. In addition, since the lifting link is arranged between the left and right transmission cases in a plan view, the rice transplanter can be moved forward, and the transmission case and the lifting link have a partially double structure in the front and back direction. The overall length of the machine can be shortened. Furthermore, the driver's seat can be easily supported above the pair of left and right transmission cases extended to position the rear wheels rearward, allowing the driver's seat to be positioned at the rear without protruding further forward than the front ends of the left and right transmission cases. Since the operator's weight is mainly on the rear wheels, the weight of the prime mover, which is located on the front end of the vehicle body, is less likely to cause fluctuations in the front-rear balance. Even when the device is raised, the front part does not float up and reliable operation is achieved.

One embodiment of this invention will be described in detail with reference to the drawings. Reference numeral 1 denotes a vehicle body, and has a configuration in which an engine stand 3 is extended from the front side of a transmission case 2. 4 is the prime mover. 5 is the control handle,
A steering transmission case 6 is provided on the vehicle body 1, a steering post 7 is erected from the steering transmission case 6, and a support shaft is provided in the steering post 7 and attached to the upper end thereof.

Reference numeral 8 denotes a hydraulic system, which includes a hydraulic pump 8a, a switching valve 8b, etc., and is mounted on the engine stand 3.

Reference numeral 9 denotes a front wheel provided below the engine stand 3 so as to be steerable.

Reference numerals 10 and 10 denote a pair of left and right transmission cases, the base sides of which are attached to both left and right sides of the transmission case 2, and extend diagonally rearward and downward. The transmission case 2 extends between the left and right transmission cases 10, 10 to near the front and rear intermediate portions thereof. In other words, the base portions of the transmission cases 10, 10 are attached to the front left and right sides of the transmission case 2.

11, 11 are rear wheels, left and right transmission cases 10, 1
It is attached to the rear end side of 0.

Reference numeral 12 denotes a pilot's seat, which is supported on the upper rear side of the transmission case 2 via a support frame 13. The driver's seat 12 is naturally located between the left and right transmission cases, with its front end positioned rearward from above the front ends of the transmission cases 10, 10, and is closer to the rear axle side.

Reference numeral 14 denotes an elevating link, and the base sides of the upper link 14a and the lower link 14b are pivotally connected to the transmission case 2 on the rear end side of the vehicle body 1, and both rear end sides are connected by a vertical link frame 14c in the vertical direction so that they are parallel to each other. It has a link structure. Then, an arm portion is integrally provided on the upper link 14a, and this arm portion is attached to the hydraulic cylinder device 15.
It is designed to be movable. The hydraulic cylinder device 15 has a cylinder base pivotally connected to the transmission case 2, a piston pivotally connected to the arm, and lifts the elevating link 14. The operation is controlled by 8.

16 is a rice transplanting work machine, and a planting transmission case 1
7 is a generally known device equipped with a seedling tank 18 that reciprocates from side to side, a planting tool 20 for dividing and transplanting seedlings from the seedling tank 18 one by one, and a soil leveling float 21.

This ground leveling float 21 is provided so that the front part moves up and down with the rear part as a fulcrum, and this front part and the switching valve of the hydraulic device 8 are linked with a wire to move up and down with fluctuations in ground pressure. At this time, the valve is automatically switched and the hydraulic cylinder device 15 is operated, so that the ground pressure of the soil leveling float 21 is maintained at an appropriate level within a substantially constant range during seedling planting.

To explain the work with the configuration of the above example, when an operator is seated in the driver's seat 12 and drives the vehicle, the operator is seated at the upper part of the rear end side of the vehicle body 1 and extends rearward downward to attach the rear wheels 11. The vehicle is located behind the front end of the transmission case 10, so that the body weight is applied to the rear wheels 11, and the longitudinal balance of the vehicle body is less likely to fluctuate depending on the weight or lightness of the driver, allowing stable running.

Moreover, the cockpit 12 can be supported by the support frame 13 on the vehicle body 1 between the transmission cases 10, 10, and a frame connecting the left and right transmission cases 10, 10 is specially attached to the member that will support the cockpit 12 from now on. Even without adopting a complicated structure such as providing a transmission case, it is possible to create a structure in which the pilot's seat 12 does not protrude forward beyond the front end of the transmission case 10 in the upper part between the left and right transmission cases 10, 10.

In addition, the base side of the elevating link 14 can be connected to the vehicle body 1 between the left and right transmission cases 10, 10, so that even if the link 14 moves upward, it will not interfere with the transmission case 10.
In addition, the rice transplanting machine 16 can be moved sufficiently close to the vehicle body 1 side, and the front and rear length of the riding rice transplanter can be shortened.

[Brief explanation of drawings]

The figures show one embodiment of this invention, with FIG. 1 being a side view and FIG. 2 being a simplified diagram of the hydraulic system. Symbols in the diagram: 1 is the vehicle body, 2 is the transmission case,
3 is an engine stand, 4 is a prime mover, 9 is a front wheel, 10 is a transmission case, 11 is a rear wheel, 12 is a driver's seat, 14 is an elevating link, and 16 is a rice transplanting machine.

Claims (1)

[Scope of utility model registration request] A prime mover 4 is mounted on the front of a vehicle body 1 consisting of an engine stand 3, a transmission case 2, etc., a front wheel 9 is attached to the lower front side of this vehicle body 1, and a front wheel 9 is mounted at the rear of the vehicle body 1, forward of the rear end of the vehicle body 1. A pair of left and right transmission cases 10, 10 are installed on the base side and extend rearward considerably longer than the rear end of the vehicle body 1.
The rice transplanter 16 is attached to the vehicle body 1 extending rearward from the base side attachment position of the transmission cases 10, 10 via the lifting link 14 which is pivotally supported at a position higher than the lower end of the vehicle body 1. A pilot's seat 12 is provided above the pair of left and right transmission cases 10, 10 that are connected and extend rearward from the base side mounting position of the transmission cases 10, 10, and a pilot seat 12 is provided between the pilot seat 12 and the prime mover 4. A riding rice transplanter equipped with a control handle 5.