JPH09256831A - Agricultural working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the oil flat not to cause in a walking type agricultural working vehicle even when the working vehicle is stored in an upside-down condition. SOLUTION: In a mobile agricultural working vehicle of walking type in which an engine 4 is mounted on a forward part, and stored in a mode to reduce the storage area in the upside-down posture with the forward part downward, an oil port (a) to feed the oil of the engine 4 therethrough is provided on a forward side of an engine case, and an oil sump case 5 to prevent the oil from flowing into a cylinder of the engine 4 when the vehicle body is in the upside-down posture is provided on the oil feed port.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walk-behind rice transplanter and a tiller, and more particularly to a case structure of an engine section thereof.

[0002]

2. Description of the Related Art Conventionally, walk-type rice transplanters and tillers equipped with an engine at the front are well known, and an oil supply port for supplying oil to the engine is provided in the engine case on the front side of the engine. Those provided were also well known. However, this oil supply port was directly provided in the engine case.

[0003]

In the conventional apparatus, when a walk-behind rice transplanter or a tiller is stored, it is often placed in an upright posture in order to reduce the area. However, in the conventional case, there is a drawback that the oil in the engine case penetrates into the cylinder, which is the engine operating portion, and it becomes difficult to start the engine after storage.

[0004]

The present invention takes the following technical means in order to solve the above-mentioned problems. That is, in a walking type self-propelled agricultural working machine in which the engine 4 is mounted on the front part, and in a form in which the storage area is small by making the front part in an inverted shape when storing, the engine is The oil supply port (4) for supplying the oil of No. 4 is constructed on the front side of the engine case, and the oil is prevented from flowing into the cylinder of the engine 4 when the airframe is inverted to the oil supply port. An agricultural working machine constituted by the reservoir case 5 was used.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of the present invention will be described in detail with reference to the drawings by taking a walk type rice transplanter as an example. A vehicle body 1 has a traveling transmission case 2 fixed to a front portion of the vehicle body 1 and a planting transmission case 3 attached to a rear end side thereof. Reference numeral 4 denotes an engine, in which a cylinder chamber is provided in the vertical direction, a cylinder head portion (a) is provided at an upper portion thereof, an intake portion (b) connected to an air cleaner is provided at a rear portion thereof, and an engine mission is provided at a lower portion thereof. It composes part (c). Further, in order to provide an oil supply port at the front side of the transmission of the engine 4, instead of the closing plug of the engine supply port (d), an oil storage case 5 is screwed and attached, and the oil storage case 5 is attached. The oil supply plug 6 is screwed to the front end side of the.

Reference numeral 7 denotes a bum bar that is grounded when the rice transplanter is turned upside down. The base side is fixed to the engine 4, and the tip side is formed by bending a pipe in an inverted U shape in a front view. Reference numeral 8 indicates a fuel tank. Reference numeral 9 denotes a pair of left and right traveling wheels, which are pivotally mounted on the transmission case 2 at the base side thereof and are pivotally mounted on the tip side of a rotatable chain case 10 for transmission rotation.

Reference numeral 11 denotes a steering frame, the tip side base portion of which is fixed to the planting transmission case 3 so that the tip side is positioned at the upper rear portion. Reference numeral 12 denotes a steering wheel, which is the steering frame.
It is attached to the frame 11. Reference numeral 13 denotes a seedling mounting base, which is arranged so as to incline so that the front side is lower along the upper portions of the control frame 11 and the control handle 12, and the lower front side thereof serves as a seedling stopper from the control frame 11 side. The L-shaped frame 14 extending in the left-right lateral direction is used to receive the left-right movement freely, and the rear rear surface is supported by the support body 15 attached to the rear end side of the control frame so as to be horizontally movable. The L-shaped frame 14 is provided with a seedling division opening so that the seedling can be separated from the division opening.

Reference numeral 16 denotes a seedling planting device, which is attached to the planting transmission case 3 by a crank mechanism, and a seedling planting claw 17a provided on the seedling planting tool 17 intervenes in the seedling dividing port from above. The seedlings are then separated and planted in the lower paddy field. The seedling mounting base 13 is a transmission case 3 for planting.
It is attached to a horizontal lateral movement mechanism provided inside through a moving rod 18 and is configured to reciprocate laterally to the left and right, and a mitt-like seedling is placed on this mounting table 13.

Reference numeral 19 denotes a hydraulic device, which is the right and left chain cables.
The wheels 20 are actuated by operating the arms 20 that are fixed to the space 10 respectively.
Move up and down. Reference numeral 21 denotes a float, which is disposed on the lower side of the body 1 and is attached so that the front part moves up and down by pivotally attaching the rear part with laterally adjusted pins, while leveling the planting position, It works to receive a part of the airframe load in the field. Further, a hydraulic pressure switching valve 22 is provided between the upper portion of the float 21 and the machine body 1, and the switching arm and the float are interlocked by a rod 23 to connect the machine body 1 and the float 21. Automatic control is used so that the intervals are appropriate for planting work.

Reference numeral 24 represents a hood. In the configuration of the above example, when the rice transplanter is set upside down in a small area when the rice transplanter is not in use or is transported by truck, the bamber 7 of the rice transplanter is set on the ground or the bed so that the rice transplanter does not fall over. Secure with a string. Conventionally, when the rice transplanter is stored upside down like this, unless the engine oil of the engine 4 is drained, the oil enters the cylinder where the piston intervenes, so-called oil rise occurs, and it is difficult to start the engine 4. Met. However, since the oil reservoir case 5 is provided in the configuration of this embodiment, the engine oil does not enter the oil reservoir case 5 and infiltrate into the cylinder when inverted. Therefore, a troublesome work such as draining the engine oil is not required, and it can be stored as it is upside down, which is extremely convenient at the time of storage.

The arrangement of the fuel tank of a passenger-type towing vehicle, particularly a passenger-type rice transplanter, will be described. Conventional fuel tanks have been provided on the lower surface of the mounting floor behind the control seat. That is, as disclosed in Japanese Patent Laid-Open No. 63-198907, it was extremely common in a vehicle body of a mid-engine type riding work machine in which an engine is mounted at a front and rear intermediate position of the vehicle body. In the general tractor type, the engine is constructed in the upper part of the fuselage in front, so that the fuel tank is also constructed in the front bonnet. By the way, in a mid-engine type passenger tow vehicle, it is desirable to provide a fuel tank near the engine. Therefore, as shown in FIG. 3, the fuel tank is arranged on the rear side of the floor at the side of the control seat.

More specifically, the reference numeral 25 denotes a passenger-type tow vehicle, which has a front transmission case 27 on the front side of a vehicle body 26 and rear transmission cases 28a, 28b on the rear side thereof, which are branched to the left and right sides. Front axle cases are projected on both left and right sides of the front transmission case 27, and drive front wheels 29 for steering are provided on the front axle cases. An engine 31 is mounted in the front-rear intermediate portion, and a mounting floor 32 is stretched on the upper surface side of the vehicle body 26. Further, a steering machine frame 33 is erected on the upper front side, and a steering handle 34 is provided on the upper side thereof, and the engine 31 is positioned so as to project to the rear side.
The periphery and the upper part of the engine cover 35 are covered with an engine cover 35, and a control seat 36 is provided on the upper part of the engine cover 35. The floor 32 is tilted so that the rear side of the rear wheel 30 is higher than the front side of the upper portion of the rear wheel 30.
A predetermined clearance is provided inside the rear wheel 30 to form a mud-preventing wall surface (e).

Reference numeral 37 is a fuel tank, which is located on the back side of the floor 32 on the lower left and right sides of the seat 36, and is located on one of the left and right sides of the fuel tank toward the upper rear side.
a, the supply port 38 is arranged near the floor-upper surface position, and the cap 39 is inserted from the hole formed in the floor-32.
Is configured to be removable. Further, the left and right fuel tanks 37, 37 branched to the left and right sides are connected by a pipe 40 so that fuel can flow through each other.

A rice transplanter 41 is attached to the rear portion of an elevating link 43, the base side of which is attached to a post 42 standing upright in the middle of the rear portion of the vehicle body 26.
It is provided so as to be able to move up and down by a hydraulic device 44 that operates 3. According to this configuration, the fuel tank 37 is not disturbed by the support column 42, which is a base-side mounting member of the elevating link 43 for mounting a rice transplanter or the like as a working machine, and
A large-capacity structure can be created without being hindered by other hydraulic devices and power transmission mechanisms, and the fuel supply port can also be configured on the floor part on the left or right side so that refueling work becomes easier and the floor You can place a replenishment tank on top to replenish.

Although the mud-preventing wall surface (e) is formed between the rear wheel 30 and the rear wheel 30 in the embodiment, the fuel supply tank passage 37a is formed along the upper front side of the rear wheel 30 as shown in FIG. It is also possible that a part of the lever fuel tank 37 itself also serves as a fan. The riding type rice transplanter, that is,
The fertilizer feeding / conveying means in the fertilizer applicator in the case where the rice transplanter 41 is attached to the rear part of the riding type towing vehicle through the elevating link 43 and the fertilizer applicator 45 is attached to the fertilizer applicator.
This will be described with reference to the drawings.

First, the fertilizer application device 45 is used for the fertilizer storage tank 4
6 is provided on the rear of the vehicle body 26 so as to extend upward and fixed to this, and a feeding device 48 for feeding the fertilizer is attached to the lower part of the fertilizer storage tank 46.
The fertilizer fed out and flowed down in 8 flows into the transfer pipe 49, and this transfer pipe 49 is extended to the rear lower side and attached to the groove 50 attached to the float 50 attached to the lower side of the rice transplanter 41. It is configured to be released into. The rear extension of the transfer tube 49 is composed of a hose of a flexible member, and is bent and deformed according to the up and down direction of the rice transplanter 41. Further, the air blown by the blower 52 is blown into the air reservoir tank 53 at the front side of the transfer pipe 49 where the fertilizer on the base end side intervenes.
The compressed air is blown in from 3. In this way, the fertilizer flowing down into the transfer pipe 49 is pneumatically fed and discharged into the grooving device 51, and is fertilized at the same time as the rice planting operation. In the riding type rice transplanter configured with the fertilizer application device 45 as described above, the fertilizer is air-transferred in the transfer pipe 49. However, when the air pressure is too strong, the fertilizer blown into the grooving device 51 scatters together with splashes. If the air pressure is weak, the clogging phenomenon in the transfer pipe 49 is likely to occur. In order to eliminate this, it is desirable to stretch the wind force of the blower 52.

Therefore, the rotation control of the motor M of the blower 52 is performed as shown in FIG. Detector A for detecting the wetness of the fertilizer in the fertilizer storage tank, fertilizer detector B for the amount of feeding the fertilizer, vehicle speed detector C for detecting the traveling speed for detecting the working speed, and the depth of water in the paddy field Depth detector for detecting the flow of air by the detector D
To control. That is, when the humidity of fertilizer is high, the amount of fertilizer applied is large, the vehicle speed is fast, or the water depth is deep, the transfer wind pressure is controlled to be high. It should be noted that the control may be performed under one condition of this case, or may be controlled at an appropriate time.

In the embodiment, the rotation of the blower 52 is controlled, but a throttle valve for changing the amount of air blown into the air reservoir tank may be provided to control the open / close state of the valve.

[0019]

According to the present invention, when the rice transplanter is stored in a warehouse when it is not in use, or when the front side is inverted to reduce the area when the truck is transported, the oil of the engine 4 is not drained. Even if it is inverted, oil does not enter the cylinder and so-called oil rising does not occur, which is convenient.

[Brief description of drawings]

FIG. 1 is a partially broken side view.

FIG. 2 is a plan view of a main part.

FIG. 3 is a partially cutaway side view of another example.

FIG. 4 is a side sectional view of a main part of another example.

FIG. 5 is a plan view of a main part of another example.

FIG. 6 is a partially cutaway side view of another example.

FIG. 7 is a control circuit diagram in FIG.

[Explanation of symbols]

 4 Engine 5 Oil reservoir case Oil supply port

Claims (1)

[Claims] 1. A walk-behind self-propelled agricultural working machine having an engine 4 mounted on a front portion thereof, which has a shape in which the storage area is reduced by making the front portion in an inverted position when the storage equipment is stored. ,
Oil supply port (d) for supplying the oil of the engine 4
Is an engine case, and an oil reservoir case 5 is provided at the oil supply port to prevent oil from flowing into the cylinder of the engine 4 when the body is inverted.