JPH10235253A - Management working car for paddy field - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to hold the front and rear of a vehicle body in a stable state and to exactly spray chemicals to plated seedlings by providing the front surface side of the vehicle body with a boom for chemical spraying and providing the rear side with a chemical tank and pump blower. SOLUTION: The boom for chemical spraying is disposed on the front surface side of the vehicle body (b) and the chemical tank (c) is disposed behind a driver's seat 9. The pump blower (d) rotated by a transmission shaft 11 from a PTO shaft 10 on the rear end side of the vehicle body (b) is installed in the position projecting from the rear side of the vehicle body (b). The spraying position of the chemicals is adjusted by lifting the boom for chemical spraying in a vertical direction by lifting device (e). A cylinder (h) is so constituted as to exist in the position of a lower solid line when an oil damper h' extended thus far shrinks by the drop of the internal pressure thereof and to exist in the position of an upper virtual line when this damper is extended. According to such working car, an operator can see its driving and the application state of the vehicle body wile viewing forward and, therefore, the state of the work may be recognized at all times and the execution of the precise work is ensured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the field of management work vehicles for paddy fields, and more particularly, to management work vehicles that can be used for spraying chemicals in paddy fields, for planting seedlings, and as other work vehicles. It is about.

[0002]

2. Description of the Related Art Conventionally, in a paddy field management work vehicle, a medicine spraying device is usually provided behind a vehicle body, and some of them are provided on a front surface of the vehicle body. .

[0003]

In the conventional medicine spraying boom provided at the rear of the vehicle body, the driver rarely directly takes the medicine by spraying, but the driver is required to plant the medicine in front of the vehicle. While driving while observing the condition of the seedlings, it was necessary to look back occasionally and observe the state of application of the chemicals, and always had to pay attention. Further, in the case where the medicine spraying device is provided on the front side of the vehicle body, the position adjustment of the height and the balance before and after the vehicle body are not always appropriate.

In view of the above, the present invention is an improvement of the conventional paddy field management work vehicle. The object of the present invention is to consider the influence of the driver on the medicine in spraying the medicine. However, in a stable and balanced state before and after the vehicle body, it is necessary to spray the chemicals appropriately to the seedlings to be planted, and if necessary, easily plant the seedlings from the working vehicle for spraying the chemicals. In order to be able to convert to other working vehicles.

[0005]

In order to achieve the above object, according to the present invention, a management work vehicle for paddy fields includes:
In addition to providing a boom for spraying medicine on the front side of the vehicle body,
By providing a chemical tank and a pump / blower at the rear, the vehicle body is balanced in the front-rear direction, and a lifting device including a lifting link and a cylinder is provided at the front and rear of the vehicle, and an oil passage for the cylinder is provided. By providing a switching cock, the work vehicle is switched from the one for spraying the medicine to the one for the rice transplanter to solve the problem.

That is, according to the present invention, a pump / blower is operated with an output from a PTO shaft at the rear of a vehicle body, thereby spraying a medicine in a tank from a boom. In addition to providing a medicine spraying boom that can be bent to the side of the car body freely, a medicine tank is provided on the car body behind the driver's seat, and a pump / blower is further provided on the rear end side of the car body, The medicine spraying boom provided on the front surface of the vehicle body so as to be able to move up and down is configured to be provided on a lifting device including a lifting link, a cylinder, and an oil damper provided on a chassis frame on both sides of the bonnet. Further, a lifting device including a cylinder and a lifting link that supports a medicine spraying boom provided on the front side of the vehicle body, and a lifting device including a cylinder and a lifting link for normal operation provided on the rear side of the vehicle body, The switching cock of the oil passage for the cylinder is provided near the driver's seat.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a paddy field management work vehicle, in which a conventional chemical spraying boom, a chemical tank, and a pump / blower provided at a position protruding from the rear end of the vehicle body are provided. By changing the medicine spraying boom to the front side of the car body, the medicine tank is moved to the rear of the driver's seat of the car body, and the pump blower is left at the rear end of the car body. It is intended to balance.

[0008] Further, by changing the layout in this manner, the lifting and lowering device including the cylinder and the lifting and lowering link of the chemical spraying boom provided on the front end side of the vehicle body is displaced from the conventional lifting and lowering link and cylinder for the seedling planting device. The lifting device is left at the rear end of the vehicle body, and switching cocks for the oil passages for these cylinders are provided near the driver's seat.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. The paddy field management work vehicle (A) of the present invention comprises a paddy field front wheel (2) and a rear wheel (3) below a chassis frame (1).
An engine (4) is mounted on the front upper portion of the chassis frame (1), and an operation panel (6) is provided following a hood (5) covering the engine (4). An operation handle (7) is provided on the operation panel (6). A driver's seat (9) is provided for the operation panel (6) through a step (8). The output from the engine (4) is divided into the running output of the front wheels (2) and the rear wheels (3) and the PTO output, and the PTO output is taken out of the PTO shaft via the PTO transmission case. It has become so.

In such a paddy field management work vehicle,
Conventionally, a medicine spraying device comprising a medicine tank, a pump / blower, and a medicine spraying boom is provided at an end of an elevating device constituted by a cylinder and a link mechanism consisting of a top link and a lower link projecting from a rear end of a vehicle body. The device is detachably provided. Output is transmitted to the pump / blower from a PTO shaft at the rear end of the vehicle body.

According to the present invention, the layout of such a medicine spraying device is changed. The medicine spraying boom (a) is moved to the front side of the vehicle body (b) and the medicine spraying boom (a) is moved. ) Is located behind the driver's seat (9), and is installed on the vehicle body (b) so as to surround the driver's seat (9) halfway. This position is close to the rear wheel (3). Pump / blower (d) for spraying the medicine in the medicine tank (c)
Are provided at positions protruding from the rear end of the vehicle body (b). The pump / blower (d) rotates on a transmission shaft (11) from a PTO shaft (10) on the rear end side of the vehicle body (b). That is, the medicine spraying boom (a), the medicine tank (c), and the pump / blower (d) as described above.
It is a feature of the present invention to change the position and layout of the conventional medicine spraying device.

The medicine spraying boom (a) is installed on the front side of the vehicle body (b), and the boom (a) has a front side boom (a ₁ ) and a vehicle body (a) at both ends thereof. b) Side booms (a ₂ ), (a) bent along the side
₂ ). The medicine spraying boom (a) is moved up and down by a lifting device (e) described below to adjust the spraying position of the medicine.

As shown in FIG. 1, the elevating device (e) comprises a mounting frame body composed of columns (12) and (12) erected on a chassis frame (1) on both sides of a hood (5). On the other hand, two parallel rotating members (1) pivotally supported (13) and (13) at the upper and lower positions on both sides thereof are provided.
4), (14 '), the parallel rotating members (14), (1)
A frame (g) having a parallelogram shape in a side view is formed by the vertical members (16) provided on the pivots (15) and (15) with respect to the end of 4 ′).

As shown in FIG. 2, the parallelogram frames (g) and (g) provided on both sides are connecting members for connecting the upper ends of the vertical members (16) and (16). (17)
Has a support member (17 ') erected at the center thereof, at a position separated from the support member (17') and the pivotal support (15) at the upper end of the rotating member (14 '). , A parallelogram frame (g), a parallel rotating member (14 ′) of (g),
A cylinder (h) and an oil damper (h ') are provided between the connecting member (18) and an intermediate portion of the connecting member (18).

The elevating device (e) thus constructed
Is located at the position indicated by the solid line below when the cylinder (h) has contracted due to the contraction of the oil damper (h ′) that has been extended due to the decrease in its internal pressure. Conversely, when the cylinder (h) has extended,
It is at the position of the virtual line above. Parallelogram frame (g),
Near the lower ends of the vertical members (16) and (16) constituting (g), there are horizontal supporting members (19) and (19) protruding outward on the inner surface side. The front side boom (a ₁ ) is supported by the members (19) and (19).

[0016] The front-side boom (a _1), at its ends, a lateral boom _{(a 2), (a 2} ) are pivotally connected to, the side boom (a _2), ( a ₂₎
Is folded along the vehicle body (b) when not in use without spraying the medicine, but is folded during use, for example, when it is not necessary to use one side near the shore of a paddy field. . At this time, the front side boom (a ₁ ) has its end face closed. The medicine spraying boom (a) is provided with a nozzle (20) for ejecting and spraying the medicine. The medicine tank (c) is located at the rear of the driver's seat (9) and is installed so as to surround the center.

As shown in FIG. 4, the paddy field management work vehicle (A) of the present invention can be easily converted from a chemical spray work vehicle to a rice transplanter equipped with a seedling planting device. . At that time, the lifting device (e) together with the boom (a) for spraying the medicine is removed from the mounting frames (f) and (f) provided on the chassis frame (1) in front of the vehicle body (b). Next, the chemical tank (c) is removed from the rear part of the driver's seat (9), and a step (j) for a splicing operation at the time of planting seedlings is attached to the removed position, and attached to the rear end of the vehicle body (b). A seedling planting device (m) is mounted on a lifting device (k) including a certain lifting link and a cylinder. The above is a case of using a rice transplanter, but other models such as attaching a fertilizer to this lifting device (k) can also be used.

[0018]

The paddy field management work vehicle (A) of the present invention sprays, disinfects, and disinfects the planted seedlings in the paddy field by using the chemical spraying agent installed on the front side of the vehicle body (b). Boom (a) is a cylinder (h) that constitutes a lifting device (e)
When the oil pressure in the inside is lowered and the oil damper (h '), which has been extended by its own weight, is at the descending point due to the contraction, the bent portion (i) at both ends of the front boom (a ₁ ).
Open the side booms (a ₂ ) and (a ₂ ) to make them straight. Next, oil from an oil pump (not shown) provided in the vehicle body (b) enters the cylinder (h),
The boom (a) rises due to the extension of the cylinder (h) against the extension of the oil damper (h '). By this rising action, the position of the spraying of the boom (a) on the planted seedling in the paddy field is adjusted. Opening the side booms (a ₂ ) and (a ₂ ) to the side at the bent portion (i) is performed by the front boom (a
₁ ) It may be after the position is adjusted by ascending.

The output from the engine (4) is applied to the vehicle (b)
The output from the PTO shaft (10) at the rear end of the transmission shaft (1
The pump blower (d) is operated via 1), and the medicine in the medicine tank (c) is sent to the rear pump blower (d) through the pipe (p ₁ ). ₂ ) At (p ₂ ), the air is sent to the front boom (a ₁ ) at (p ₃ ) and (p ₃ ). The medicine is sent to the side booms (a ₂ ) and (a ₂ ) extended to the side through the front side boom (a ₁ ) and the bent portion (i), and is sent to the lower surface of the boom (a). It is sprayed by jetting air from the provided nozzle (20). When the side booms (a ₂ ) and (a ₂ ) are bent at the bent portion (i), the end of the boom (a ₁ ) is closed and the medicine flows out. Therefore, when it is not necessary to spray with one side boom (a ₂ ) in spraying, the side boom (a ₂ ) is bent and work is performed.

In the spraying of medicine by the paddy field management work vehicle (A) of the present invention, since the medicine spraying boom (a) is installed on the front side of the vehicle body (b), the driver is required to take a medicine. Despite that, the driver's seat (9) is located at a relatively high position on the vehicle body (b), and the chemical spraying boom (a) is sprayed low near the planting seedlings. Be careful not to be exposed to the chemicals directly by wearing them. Since the driver always performs the operation of spraying the medicine while driving the work vehicle (A) while looking forward, the driver can always know the state of the operation.

The paddy field management work vehicle (A ') shown in FIG.
A medicine spraying boom (a ') is provided on the front side of the vehicle body (b'), and a pump / boom protruding rearward of the vehicle body (b ') is provided.
The rear weight (w) is attached to the blower unit (d '). In the case of such a work vehicle (A '), when converting a work vehicle for spraying medicine to another rice transplanter or another work vehicle, remove the medicine spraying boom (a') on the front side, Remove the pump / blower unit (d ') and rear weight (w) protruding from the rear and attach a seedling planting device to it, and use it as a rice transplanter. Becomes

[0022]

The paddy field management work vehicle of the present invention is provided with a medicine spraying boom that can be moved up and down on the front side of the vehicle body.
Since the medicine tank is provided on the vehicle body behind the driver's seat and the pump / blower is projected from the rear end side of the vehicle body, the driver always sprays the medicine and does not look backwards, but always looks forward. It is possible to see the operation of the work vehicle and the spraying state of the chemicals on the planted seedlings, so that the worker can always grasp the state of work and perform appropriate work. In addition, due to the installation positions of the medicine spraying boom, the medicine tank, and the pump / blower, the vehicle body is well balanced in the front-rear direction, so that the medicine can be sprayed on the planted seedlings accurately.

The boom for spraying the medicine provided on the front side of the vehicle body includes a lifting link pivotally supported by a mounting frame constituted by pillars projecting from the vehicle body frame on both sides of the bonnet. Since it is supported by the lifting device consisting of the provided cylinder and oil damper, the medicine spraying boom can be adjusted up and down to an appropriate position without leaving too far from the front of the car body, It can contribute to balance in the front-rear direction.

Further, in the paddy field management work vehicle of the present invention, the lifting cock provided on the front side of the vehicle body and the switching cocks of the oil passages for the respective cylinders of the lifting equipment provided in the vehicle body direction are provided near the driver's seat. Since it is provided, when converting from a work vehicle for spraying a medicine to a rice transplanter or other work vehicle, the operation of the work vehicle can be easily performed by switching the oil path from the driver's seat with a switching cock Can be.

[Brief description of the drawings]

FIG. 1 is a side view of a paddy field management work vehicle according to the present invention.

FIG. 2 is a plan view of the working vehicle according to the first embodiment;

FIG. 3 is a front view showing a state in which a medicine spraying boom and a lifting device for the same are removed from the work vehicle according to the first embodiment;

FIG. 4 is a plan view showing a state where the work vehicle is converted into a rice transplanter.

FIG. 5 is a side view of the work vehicle in which only the medicine spraying boom has been moved forward from the conventional paddy field management work vehicle and a rear weight has been added instead.

[Explanation of symbols]

 A Paddy field management work vehicle a Boom for spraying chemicals b Bodywork c Chemical tank d Pump / blower e Lifting device f Mounting frame g Parallelogram frame h Cylinder h 'Oil damper i Bending part j Step k Lifting device 1 chassis frame 4 engine 8 step 9 driver's seat 14 parallel member 17 connecting member 18 connecting member 20 nozzle

Claims (3)

[Claims] A pump and a blower are operated by an output from a PTO shaft on the rear side of a vehicle body, whereby a medicine in a tank is sprayed from a boom. A management vehicle for paddy fields, comprising a medicine spraying boom that can bend to the side, a medicine tank on the vehicle body behind the driver's seat, and a pump / blower on the rear end side of the vehicle body. 2. A medicine spraying device, wherein a pump / blower is actuated by an output from a PTO shaft at the rear of the vehicle body to spray a medicine in a tank from a boom. The paddy field management work vehicle, wherein the boom is supported by a lifting device including a cylinder and a lifting link provided on a chassis frame on both sides of the bonnet. 3. An elevating device comprising a cylinder and an elevating link supporting a medicine spraying boom provided on a front side of a vehicle body,
A lifting and lowering device comprising a normal working lifting link and a cylinder provided on the rear side of the vehicle body, wherein an oil passage switching cock for each cylinder is provided near a driver's seat. .