JPS59209971A - Mobile agricultural working device - Google Patents

Abstract

PURPOSE:To enable the front and the rear of a device to be well-balanced and to reduce running resistance and a power loss, by a method wherein a gear box is located on the axle for front wheels, and the axles for rear wheels are protruded rightward and leftward from a frame which extends through the central part of a vehicle body and used in combination of a transmission case. CONSTITUTION:A gear box 1 is located to the upper side of an axle 3 for front wheels 2, and a power is fed through a belt transmission system 5 from an engine 4 situated adhead thereof and is distributed through an internall-mounted transmission to given spots. A frame 13, which extends through the central part of a vehicle body to the rear is used in combination of a chain case, is securly attached to the gear box 1, and a power transmission system is incorporated in the frame 13. A pair of axles 14, protruding rightward and leftward from the frame, are mounted to the rear of the frame 13, and rear wheels 16 are respectively mounted thereto. This increases a front load, resulting in well- balancing of the front and the rear, and reduces running resistance through one- piece construction of the frame 13.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mobile agricultural machine mainly used for paddy fields and used for rice planting rows, sowing, fertilization, etc.

A riding rice transplanter is known as this type of mobile agricultural machine, and power transmission to the rear wheels is usually provided with a chain case extending rearward from both sides of a transmission located at the front of the vehicle body. , the rear wheels are each pivoted on the chain case, and the power is transmitted to the rear wheels via the chain transmission section installed inside the chain case. However, the chain case has to be submerged in the mud when driving, and the disadvantage is that the running resistance increases as the chain case gets in the way.

In addition, the transmission and other gearboxes are part of the fuselage frame, and the transmission is positioned behind the front wheel axis, increasing the angle of descent of the chain case to minimize resistance when it gets into the mud. It is possible to do this, but this would make the front side lighter and make it difficult to maintain front-to-back balance.

The present invention was made based on the above circumstances, and in order to achieve front balance, a gearbox is placed on the front wheel axle, and a transmission case that also serves as a frame is connected from the gearbox through the center of the vehicle body. By arranging the rear wheel axle to protrude from the transmission case to the left and right, Fukada aims to provide a mobile agricultural machine that reduces running resistance by reducing the penetration of the transmission case into the mud by a single transmission case. It is something.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the embodiment shown in FIGS. 1 to 3, reference numeral 1 denotes a gear box installed on the upper side of a vehicle @ 3 that drives front wheels 2, and a gear box 1 is connected to a gear box disposed in front of the engine 4 via a belt transmission system 5. Mission 6 of internal equipment after receiving the moving horn
It is configured so that power is distributed to each required location via the.

The transmission 6 transmits the moving horn to the power transmission system 8 to the front wheels 2 via the clutch 7 of the belt transmission system, and also transmits the moving horn to the moving horn transmission system 9 to the rear wheels, which will be described later. Moreover, power is transmitted to the power transmission system 12 to the planting device 11 via the clutch 1o.

A frame 13, which also serves as a chain case, is fixed to the gear A7 box 1 and extends rearward through the center of the vehicle body, and a power transmission system 9 is built into the frame 13. In this embodiment, the power transmission system 9 connects the gear A7 box 1 and the frame 13 to the first stage reduction gear machine +! ! 89a, and at the rear of the frame 13, left and right type 111
14. A second stage reduction gear mechanism 91) is configured for 14. Distribution shaft 9 to the second stage reduction gear mechanism 9b
A dock clutch 15.15 is provided at c, and functions to transmit and cut off power to each axle 14.14. The axles 14.14 protrude left and right from the frame 13, respectively, and the rear wheels 1 (3, 1
6 is installed.

In addition, in the figure, reference numeral 17 is a support that is erected from the frame 13, 18 is an elevating mechanism consisting of a parallelogram link pivotally connected to the support, 19 is a center float that supports the planting device 11, and 20 (as shown in FIG. Nied float, 21 is a seedling V stand,
22 is a planting rod of the planting device 11. The elevating mechanism 18 is moved up and down by a hydraulic cylinder 23. Further, in the figure, reference numeral 24 is a driver's seat, and 25 is a steering wheel, which controls the direction of the front wheels 2.

In such a configuration, since the gearbox 1 is located on the axle 3 of the front wheel 2, the front load is large, resulting in so-called front balance, which improves the front-rear balance when driving in paddy fields. Furthermore, since the frame 13 is located at the center of the traveling vehicle body, and unlike conventional vehicles, there is only one portion supporting the width axis 14, 14 at the rear end, so the resistance to mud pushing is small even when traveling in Fukada.

In addition, in the embodiment shown in FIGS. 4 and 5, the second
A chain transmission system 26, 26 is used to reduce the speed of the stage, and the width of the portion of the frame 13 that penetrates into the mud is narrow, so as to reduce mud pushing resistance.

In this embodiment, the second stage deceleration is performed at the rear of the frame 13, but the structure is such that it can be performed at the front of the frame 13 or inside the gear case 1, and the internal structure of the frame 13 is simplified to reduce the width. It would be better if it could be made narrower, and it would be better to make the gear or sprocket wheel attached to the axle 14. It is better to reduce the pushing resistance.

As described in detail above, the present invention comprises a gear box on the front wheel axle, a frame that also serves as a transmission gear passing through the center of the vehicle body, and the rear wheel axle protrudes from the frame to the left and right, so that it can be moved easily. As an agricultural machine, it is front-balanced, and even if the axle gets stuck in the mud, the mud pushing resistance is small, significantly suppressing the decline in running ability and reducing power loss. Furthermore, because of this, it is possible to reduce the diameter of the rear wheels in terms of design, which has the advantage of promoting miniaturization of the aircraft as a whole.

[Brief explanation of the drawing]

Fig. 1 is a side view showing one embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is an exploded view schematically showing the power transmission system, and Fig. 4 is a side view showing an embodiment of the present invention.
The figure is a side view of the main parts of another embodiment, and FIG. 5 is a developed view schematically showing the power transmission system in the middle. DESCRIPTION OF SYMBOLS 1... Gear box, 2... Front wheel, 3... Axle, 4... Engine, 5... Belt transmission system, 6...
Mission, 7...Clutch, 8, 9...Power transmission system, 10...Clutch, 11...Irrigate device, 12
...Power transmission system, 13...Frame (die case), 14...Axle, 15...Dock clutch, 16
... Rear wheel, 17... Branch, 18... Lifting mechanism,
19...Center float, 20...Side flow 1
~． 21... Seedling stand, 22... Planting rod, 23...
- Hydraulic cylinder, 24...driver's seat, 25...handle, 26...chain transmission system.

Claims (1)

[Claims] A mobile agricultural machine comprising a gear box on a front wheel axle, a frame that also serves as a transmission case passing through the center of the vehicle body, and a rear wheel axle protruding left and right from the frame.