JPS6313051Y2 - - Google Patents

Description

[Detailed description of the invention] This invention places the engine and transmission case equipped with a cooling fan at the front of the aircraft in front of the driver's seat, and the seedling planting device can be raised and lowered at the rear of the passenger car body. The present invention relates to a riding rice transplanter that is connected to a vehicle and has an operating pedal located in front of the driver's seat.

The conventional rear-mounted riding rice transplanter, which has a seedling planting device connected to the rear of the vehicle body, has an engine at the front of the machine body, and front and rear wheels, as shown in the technology disclosed in Japanese Utility Model Application Publication No. 56-73931. In between the mission case,
It consisted of a driver's seat at the rear upper part of the transmission case, and a seedling planting device connected to the rear of the vehicle body that included the engine, transmission case, and driver's seat.

With this structure, there is the inconvenience that a large balance weight must be installed at the front of the vehicle body in order to prevent the front wheels from lifting due to the large drive reaction force on the rear wheels while driving in wet fields. It was hot.

In other words, because rice transplanters run with their wheels immersed in mud, the driving reaction force of the wheels is large.Moreover, according to the rear-mounted riding rice transplanter, which has a seedling planting device connected to the rear of the vehicle, it is difficult to seed seedlings. Due to the weight of the planting equipment and seedlings, the center of gravity of the machine tends to move toward the rear, causing the front wheels to tend to lift up, and to avoid this, a large balance weight must be installed at the front of the vehicle, which is an inconvenience. Ta.

However, when a large balance weight is installed at the front of the machine, the weight of the machine increases, even though it is desirable for the machine to be lightweight.
Along with this, there was the inconvenience that the engine had to be made larger.

The purpose of this invention is to suppress the lifting of the front wheels without increasing the weight of the aircraft, and, through simple modification, to create a system that does not cause discomfort to seated workers and makes it difficult to operate the pedals. The aim is to further reduce the front and rear width of the aircraft without causing any problems, and to make it easier to get on and off from the ridge.

The characteristic configuration of this invention to achieve the above purpose is as follows:
An engine equipped with a cooling fan and a transmission case are arranged vertically and overlappingly in a state in which the engine is positioned forward of the front wheel axle and above the transmission case, The air blowing direction is set so that the cooling air is blown toward the front of the aircraft body, and furthermore, the operator's footrest step is extended to near the front end of the engine, and the operation pedals are overlapped above and below the engine. On the footrest step on the side of the engine and transmission case, and when viewed from the side,
The engine and transmission case are arranged so as to overlap with each other in the longitudinal direction of the aircraft body, and this configuration provides the following effects.

In other words, since the engine and transmission case are placed ahead of the front wheel axle, not only the engine but also the transmission case can be used as a balance weight for the drive reaction force of the wheels and the seedling planting device. This makes it possible to reduce the size of the separately dedicated balance weight provided at the front of the vehicle body and prevent the front wheels from lifting up without significantly increasing the weight of the vehicle body.

Since the engine and the transmission case are arranged vertically and overlappingly, the body protrudes from the front wheels, compared to a case where the engine and the transmission case are arranged in front of each other at a position forward of the axle of the front wheels. The advantage is that the length is small, the turning radius of the aircraft can be made small, and the amount of headland planting at the edge of the ridge can be reduced.

Since the engine cooling air is blown toward the front of the aircraft, it is possible to prevent the cooling air from blowing onto the seated worker even if the engine and the driver's seat are placed close to each other.
In a structure in which engine cooling air is blown toward the rear of the aircraft, a separate barrier wall must be provided to prevent the hot air from blowing onto the operator after the engine has been cooled. This has the advantage of preventing hot air from blowing onto the worker after the engine has been cooled. Furthermore, since the operating pedals are placed on the sides of the engine and transmission cases, which are arranged overlappingly above and below, the operation pedals can be moved between the driver's seat, the engine and the transmission case without causing the inconvenience of difficulty in operating the pedals. As a result, the engine, transmission case, and driver's seat can be placed as close together as possible without causing discomfort to the worker seated in the driver's seat, while making it difficult to operate the pedals. By providing the front and rear widths in a small state without causing problems, the front and rear width of the fuselage can be shortened.

Furthermore, since the operator's footrest extends to near the front end of the engine, by bringing the front end of the aircraft closer to the ridge, it is possible to get on and off from the ridge without stepping into the rice field. There are advantages that can be achieved.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

As shown in FIGS. 1 and 2, it is equipped with a pair of left and right front wheels 1, 1 that can be driven and rotated and whose direction can be changed, and a pair of left and right rear wheels 2, 2 that can be driven and rotated,
Four pine-shaped seedlings W are arranged horizontally at the rear of a passenger vehicle body in which an engine 4 equipped with a cooling fan 3 and a transmission case 5 are located in front of a driver's seat 6 and at the front end of the vehicle body. An inclined seedling platform 7 that horizontally reciprocates with a constant stroke in a placed state, a planting claw 8 that takes out and plants one seedling from the lower end of each pine-shaped seedling W, and appropriate horizontal spacing. A pair of upper and lower lifting links 1 move a seedling planting device 10 equipped with three floats 9 etc. arranged in parallel at intervals.
1a and 11b so that they can be raised and lowered, and further,
A hydraulic cylinder 12 for lifting and lowering the seedling planting device is provided in such a manner that the lower lifting link 11b can be operated to swing up and down with respect to the vehicle body, and as the machine advances,
It is configured to plant seedlings in rows, and in order to maintain a constant planting depth and to avoid contact of the seedling planting device 10 with the ground when traveling on a headland or on a road. The seedling planting device 10 is configured to be able to be raised and lowered relative to the vehicle body.

The engine 4 and the transmission case 5 are arranged vertically and overlappingly with the engine 4 positioned above, and the cooling fan 3 of the engine 4 is provided to blow cooling air forward of the aircraft body. , configured so that the engine 4 and the transmission case 5 can be installed with a small front and rear space,
Further, the driver's seat 6, the engine 4, and the transmission case 5 are configured so that they can be brought close to each other without causing discomfort to the seated worker due to the engine cooling air.

An on-biased belt-type tension clutch 1 that can be operated to disconnect the output shaft 4a of the engine 4 and the input shaft 5a of the transmission case 5 using a pedal 13.
A traveling brake 16 is provided in the transmission case 5 and is elastically biased when the brake is released from the brake release state. It is equipped with a travel gear transmission that can be operated to change speeds. The clutch operating pedal 13 is provided on the left lateral side of the engine 4 and the transmission case 5, and the brake operating pedal 15 is provided near the right lateral side of the engine 4 and the transmission case 5. In addition, the driver's seat 6 is located close to the engine 4 and the transmission case 5, yet can be easily operated with both pedals 13 and 15.

The traveling drive output from the transmission case 5 is axially transmitted to the front wheel drive case 18 which is equipped with a differential transmission, and the branched output from the front wheel drive case 18 is transmitted after a pair of left and right steering clutches are installed. The shaft is transmitted to the wheel drive case 19, and the left and right front wheels 1, 1 are configured to change direction while allowing differential rotation, thereby allowing smooth turning. In addition to the direction change operation described in step 1, by stopping the drive of the left and right rear wheels 2, 2, which is the one that is closest to turning, it is possible to make sharp turns with the fulcrum near the stopped rear wheels. It is structured as follows.

The output for driving the seedling planting device in the transmission case 5 is transmitted to the cylindrical main frame 20 of the passenger vehicle body.
Power is transmitted to the seedling planting device 10 via a transmission shaft 21 provided inside and a transmission shaft 22 that can be bent and expanded, so that the seedling planting device 10 can be driven while allowing it to move up and down. It is configured. Further, in the figure, reference numerals 23 and 23 are a pair of spare seedling rest frames arranged on both side portions of the engine 4, and 24 is a foot rest step.

In the embodiment, a clutch operating pedal 13 and a brake operating pedal 15 are provided, but it is also possible to provide either one of them.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the riding rice transplanter according to the present invention, and FIG. 1 is a partially cutaway side view of the riding rice transplanter;
Figure 2 is a partially cutaway plan view of the aircraft. 1... Front wheel, 3... Cooling fan, 4... Engine, 5... Mission case, 6... Driver's seat, 1
0... Seedling planting device, 13, 15... Operation pedal,
24...Foot rest step.

Claims (1)

[Scope of utility model registration request] An engine 4 equipped with a cooling fan 3 and a transmission case 5 are arranged at the front of the vehicle in front of the driver's seat 6, and a seedling planting device 1 is installed at the rear of the passenger vehicle body.
0 is connected so as to be movable up and down, and operation pedals 13 and 15 are arranged in front of the driver's seat 6. The engine 4 includes the cooling fan 3.
and a transmission case 5 are arranged vertically and overlappingly in front of the axle of the front wheel 1 and with the engine 4 positioned above the transmission case 5,
The cooling fan 3 of the engine 4 is provided with the blowing direction set so that cooling air is blown toward the front of the aircraft body, and furthermore, the footrest step 24 for the operator is extended to near the front end of the engine 4. , the operating pedals 13 and 15 are placed on footrests 24 on the lateral sides of the engine 4 and the transmission case 5, which are arranged vertically and overlappingly, and when viewed from the side, the engine 4 and the transmission case 5
A riding-type rice transplanter characterized by being arranged so as to overlap in the longitudinal direction of the machine.