JPH03143733A - work vehicle - Google Patents

Abstract

PURPOSE:To obtain a roof, which provides no obstacle at the time of a standing attitude and displays an effect of sunshade and rain shelter at the time of work, by vertically moving the roof, arranged in the upper of a driver's seat, in the same direction following lifting a ground work device. CONSTITUTION:In a running machine body provided with front and rear wheels 1, 2, prime mover part 3 and a driver's seat 4 or the like, a seedling planter 5 is liftably connected by a cylinder 6 and a quadruple link mechanism 7 simultaneously with a fertilizing device 8 and a fertilizer supply device A arranged. Here in a screw cylinder 10A of a screw conveyer 10 in the fertilizer supply device A, a roof is vertically swivelably mounted with this screw cylinder serving as a strut and a pivotally supporting part X serving as a transverse shaft. A rear end part of the roof 20 and the seedling planter 5 are interlocking- connected by a connecting rod 24 thus with the roof 20 vertically moved in a parallel condition in the same direction following lifting the seedling planter 5. In this way, the roof 20, which provides no obstacle at the time of standing attitude and displays an effect of sunshade and rain shelter during work, is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a working vehicle in which a ground working device is connected to a traveling body so as to be able to rise and fall.

[Conventional technology]

The above-mentioned work vehicles, such as the rice transplanter shown in Japanese Utility Model Publication No. 64-2567, are provided with a roof that covers the upper part of the driver's seat to protect the driver from rain and sun.

[Problem to be solved by the invention]

In the conventional technology mentioned above, the height was determined and a flat roof was installed so that the driver could stand in the driver's seat when getting on and off or loading seedlings onto the seedling stand. During the installation work, the roof was placed too high relative to the driver, making it difficult to obtain the desired rain and sun protection effects.

The present invention focuses on the lifting and lowering movement of ground work equipment.
The purpose of the present invention is to provide a work vehicle equipped with a roof that does not have the above-mentioned disadvantages.

[Means to solve the problem]

The present invention provides the work vehicle described at the beginning, in which a roof is disposed above the driver's seat so that it can be raised and lowered, and the height position of the roof is moved up and down in the same direction as the ground work device is raised and lowered. A feature of the present invention is that the roof and the ground work device are interlocked and connected.

[For production]

According to the configuration, when the working device is raised, the roof also rises, and when the working device is lowered, the roof is also lowered.

In other words, using a rice transplanter as an example, the planting device is lowered during planting work, and the operator is sitting in the driver's seat, so the roof must also be lowered at this time. By positioning the roof at a height close to above the driver's head, effective sunshade and rain protection functions can be obtained even with a relatively small roof area.

When getting on and off the aircraft or replenishing seedlings to the seedling stand, the aircraft should be stopped and the planter should be raised (so if you also raise the roof at this time, it will be suitable for a standing position). The roof will no longer be in the way.

〔Effect of the invention〕

Therefore, it has been possible to provide a working vehicle equipped with a roof that does not get in the way when standing, and which is sufficiently effective as a sunshade and rain protector during work despite its small surface area.

Also, when moving the aircraft, the working equipment is raised to the highest level, so when moving the aircraft into a warehouse, for example, the roof is at its highest position, that is, the aircraft is at its bulkiest position inside the warehouse. Therefore, even if the work equipment is raised or lowered after entering the warehouse, the roof will not rise any higher than when entering the warehouse, and the work equipment can be moved freely without causing the roof to collide with the ceiling or shelves of the warehouse. There is also the convenience of being able to go up and down for maintenance, etc.

〔Example〕

EMBODIMENT OF THE INVENTION Below, the case where the Example of this invention is applied to the riding-type rice transplanter as an example of a working vehicle is demonstrated.

As shown in Figure 4, a pair of left and right drivable front wheels (1
), rear wheel (2), driving unit (3), spare seedling stands (15a) and (15b) on both left and right sides of the drive unit (3), and handle (14).
) and a driver's seat (4), a seedling planting device (5) is attached to a cylinder (6) and a four-speed link mechanism (
7) so that they can be freely raised and lowered, and configured to transmit power from the traveling body to the seedling planting device (5),
This is a riding type rice transplanter capable of planting 6 rows.

For seedling planting, a fertilizing device (8) is installed at the rear of the device (5) for fertilizing at the same time as seedling planting.
The fertilizer supply device (A) for 8) is supported by the traveling body at a position behind the driver's seat (4).

The fertilizer replenishment device (to 1) is configured to high-level the fertilizer tanks (9), (9) for the entire human capacity located immediately on both sides of the driver's seat (4), and the fertilizer in these fertilizer tanks (9), (9). Two vertical screw conveyors (10), (10)
It consists of each vertical screw conveyor (10),
(10) First and second hoses (11) having some flexibility at the fertilizer discharge port (B) at the upper end;
11) is connected.

The fertilizer application device (8) includes a working device (8A) for shallow layer fertilization and a rotary feeder (8B) for deep layer fertilization, and different types of fertilizers are used for shallow layer fertilization and deep layer fertilization. It looks like this.

As shown in Figure 1, shallow layer fertilization requires each row, deep layer fertilization requires each spacing row, that is, six furrowers (8A) and three feeders (3B) are required. A storage section (12) 3 consisting of a first fertilizer storage section (12A) 21 for the trencher (8A) and a second fertilizer storage section (12B) for the feeder (8B) arranged side by side on both sides. The pieces are arranged side by side in the direction of the groove.

The storage parts (12), (12), (12) have two passages (13a), (13b) for feeding fertilizer to each of the first and second fertilizer storage parts (12A), (12B).
The first and second hoses (
11), (11) to each passage (13a), (13b)
The fertilizer application device (8) can be supplied with different types of fertilizers by connecting each of the devices separately.

In other words, both hoses (11), (11) and the conduction path (13)
) to form a supply path (R) through which the fertilizer is sent down.

Next, the operating structure of the fertilizer supply device (A) will be explained.

As shown in FIGS. 1 and 2, the middle position of the supply path (R), specifically the conduction path (13) in the hose (11),
) near the connection point with the two ridges (12A).

Sensors (16) and (17) for detecting the presence or absence of fertilizer are attached to each of the conductive path (13) near the reservoir (12B), and the sensor (17) near the reservoir (I2)
) detects the absence of fertilizer, the fertilizer supply device (A)
is activated, and when the sensor (16) in the middle of the branch supply path detects the presence of fertilizer, the fertilizer replenishing device (A) is configured to stop its operation.

That is, as shown in FIG. 3, the screw (18) of the vertical screw conveyor (10) is driven by a hydraulic motor (M), and its control valve (19) is controlled by both the sensors (16) and (17).
The switching operation is performed by the operation of the storage section (12
) The hydraulic motor (M) is driven by the detection of the absence of fertilizer by the sensor (17) on the side closer to the ) will stop.

There are three sensors (17) for the fertilizer storage area for shallow layer fertilizer application, and three sensors (17) for the fertilizer storage area for deep layer fertilizer application, but the sensor that detects both shallow and deep fertilizer application first is If the hydraulic motor (~1) is configured to be driven based on this, fertilizer can be reliably applied even if the amount of fertilizer applied varies.

As shown in Figure 2.4, the vertical screw conveyor (
10), (10) can swing back and forth with the communication part with the fertilizer tank (9) as the horizontal axis (P), and the joint (10) connects the upper parts of both screw cylinders (IOA) and (IOA). 22) and the planting device (5) to the rod (21).
It is connected with.

The upper end of the rod (21) is located at approximately the same position as the discharge port (B) in side view, and the lower end is located in the conduction path (
Spherical joints (23) at the inlet sites of 13).

(23), and even if the planting device (5) goes up and down, the distance between the discharge port (B) and the inlet of the branch supply path (13) is maintained by the linking means (C) based on this interlocking structure. Hose (11) because it is kept almost constant.

(11) also has almost no change in its total length.

A roof (20) is attached to the screw tubes (IOA), (IOA) using these as supports so that the roof (20) can swing up and down with a pivot (X) serving as a horizontal axis, and this roof (20)
) and the planting device (5) are interlocked and connected by a connecting rod (24), and the roof (20) moves up and down parallel to the same direction as the planting device (5) goes up and down. It is designed to do so.

The roof (20) has a shape in which its periphery is bent downward, and as shown in FIG. 1, the upper end of the vertical screw conveyor (10), (10) ), (20a) to improve the waterproofness of the discharge port (B) in rainy weather.

[Another example]

In this embodiment, a pair of vertical screw conveyor (10) and fertilizer tank (9) are provided, but only one side may be provided.

Further, the present invention is applicable to various work vehicles in which a ground work device is connected to a traveling body such as a rice paddy direct seeder, an agricultural tractor, a backhoe, etc. so as to be able to move up and down.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the working vehicle according to the present invention, FIG. 1 is a rear view showing the fertilizer supply path, FIG. 2 is a perspective view showing the structure of the linking means, and FIG. 3 is the drive structure of the lifting device. A circuit diagram showing,
FIG. 4 is a side view of the riding rice transplanter. (4)... Driver's seat, (5)... Work equipment, (20)... Roof.

Claims (1)

[Claims] This is a work vehicle in which a ground work device (5) is connected to the traveling body so that it can be raised and lowered, and a roof (20) is installed above the driver's seat (4).
The roof (20) and the ground work are arranged so that they can be raised and lowered, and the height position of the roof (20) moves up and down in the same direction as the ground work device (5) goes up and down. A work vehicle that is interlocked with the device (5).