JPH03175905A - Riding lawn mower - Google Patents

Abstract

PURPOSE:To obtain a riding lawn mower having excellent overall performance by placing an engine at a low position in the middle of the front and rear wheels and under the driver's seat and placing a radiator in a rear bonnet in lateral direction. CONSTITUTION:An engine E having heavy weight is placed at a low position between the front and rear wheels 4, 3 utilizing the vacant space under a machine frame. A radiator 6 usually placed in longitudinal direction close to the front or rear side of the engine E is placed in a rear bonnet 2 in lateral direction. The center of gravity of the whole machine is lowered by the structure and, at the same time, the engine E is displaced from the rear bonnet 2. The distance between the shafts of the front and rear wheels 4, 3 can be decreased to an extent corresponding to the absence of the radiator 6 at the front and rear side of the engine E. Nevertheless, the machine body can be lowered by the absence of the engine E in the bonnet and the height of the rear bonnet 2 can be suppressed to the necessary minimum level.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a mower that is connected and arranged at the front position of a traveling machine,
The present invention relates to a riding type lawn mower in which a control section is provided at the front part of the machine body, a rear bonnet is provided at the rear part of the machine body, and the rear wheels are configured as steering wheels.

[Conventional technology]

A conventional example of the above-mentioned riding lawn mower is the Japanese Patent Application Laid-Open No. 1-2
It is known that the engine is mounted above the rear wheels after the control section, as shown in Japanese Patent No. 37262.

[Problem to be solved by the invention]

In general, there are two ways to mow a lawn: one method is to directly release the cut grass onto the lawn surface, and the other is to collect the cut grass in a grass collection container and not release it onto the lawn surface.

In the latter type of work, the grass collection container is attached to the traveling body of the aircraft, but it is normally placed on the rear bonnet.

However, in the riding lawn mower according to the prior art, when the grass container is placed on the rear bonnet that houses the engine, the top surface of the rear bonnet is originally high, so the grass container is placed too high, and the entire machine body is disturbed. The center of gravity would also be higher, making it difficult to achieve this in terms of running balance.

Therefore, it is possible to place a grass collection container on the side of the rear bonnet to prevent the center of gravity from being too high, but this would increase the width of the rear of the aircraft and push the grass around the standing trees closer to the edge. When mowing, the grass collection container located at the rear wheel, which rotates in a wide range, is likely to collide with other objects when turning, or it may become impossible to pass between narrow groves of trees, which may hinder lawn mowing work. Therefore, this method was also difficult to implement.

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, an object of the present invention is to enable a grass collection container mounted on a rear bonnet to be placed at a position as low as possible.

[Means to solve the problem]

In order to achieve the above object, the present invention provides the riding-type lawn mower described at the beginning, in which an engine is disposed at a longitudinally intermediate portion between the front wheels and the rear wheels and at a low position below the seat of the control section. Additionally, a radiator is disposed horizontally within the rear bonnet.

[For production]

According to the above configuration, the engine, which is a heavy object, is placed at a low position between the front and rear wheels by taking advantage of the free space below the fuselage frame, which lowers the center of gravity of the entire aircraft and allows it to be placed inside the rear bonnet. There is no need to house the engine.

The radiator, which is normally placed close to the front and rear of the engine and placed vertically, is placed horizontally inside the rear bonnet, so there is no radiator in the front or rear of the engine. While it is possible to reduce the distance between the wheels, it is also possible to lower the height of the rear bonnet by not housing the engine.
The installation height can be kept to the minimum necessary.

In other words, if the radiator is placed vertically, instead of only raising the rear bonnet partially by a narrow width equal to the width of the radiator, in order to secure a cooling air passage to the radiator, the rear bonnet must be raised for the most part. However, by placing it horizontally, you can not only lower the rear bonnet overall, but also use a part of the chassis of the aircraft that has a lot of space as a passage for cooling air flowing up and down. It is also advantageous in

〔Effect of the invention〕

Therefore, by utilizing the space at the bottom of the machine as an engine installation space, the center of gravity is lowered, and the front, rear, left, and right lengths of the machine are made compact, which improves cutting performance through tight turning. Since the height could be lowered, it was possible to provide a riding lawn mower with even better overall performance.

This is particularly effective when mounting a grass collection container on the rear bonnet.

[Example Embodiments of the present invention will be described below based on the drawings.

Fig. 2 shows a riding type lawn mower, in which a mower (M) is connected and arranged at the front position of the traveling machine body, a control part (1) is mounted at the front part of the machine body, and a control part (1) is mounted at the rear part of the machine body. Rear bonnet (
2), and the rear wheels (3) are configured as steering wheels.

The mower (M) is equipped with three vertically rotating cutting blades (7).1. It is connected to the fuselage so that it can be moved up and down.

The control section (1) is provided with a handle (8), a seat (5), etc., and is located just above the driving front wheels (4).

The rear wheels (3) are also driving wheels, and the left and right rear wheels (3),
The support case (9), which supports ('3) integrally at both ends, is configured in a power steering type in which the support case (9) is driven and steered around the vertical swing axis (Y).

An engine (E) is disposed in the aircraft at a longitudinally intermediate portion between the front wheel (4) and the rear wheel (3) and at a low position below the seat (5) of the control section (1). At the same time, a radiator (6) is disposed horizontally within the rear bonnet (2).

The power of the engine (E) is transmitted to the front wheel drive transmission mechanism (11) and the rear wheel drive transmission mechanism (not shown) via the belt transmission mechanism (lO), and the power is transmitted to the front wheel drive transmission mechanism (11) and the rear wheel drive transmission mechanism (not shown).
3) is now activated. The power of the engine (E) is transmitted through the transmission shaft (12) into the cutting blade housing (13) to drive the three cutting blades (7).

As shown in FIG. 1, the radiator (6) has its water supply port (14) located on the front side, and the electric motor (14).
5) is mounted horizontally with a suction fan (16) provided below, and the water intake port (17) provided in the water supply port (14) is provided at the rear upper end of the engine (E). It is located directly above the discharge port (18) of the water pump (P), and the vertical pipe (19) is made as short as possible.

The upper surface of the radiator (6) is provided with an air guide port (
20), a cushion (21) is attached to the upper end surface of the vertical wall (20a), and a dustproof screen (22) is provided on the upper surface of the rear bonnet (2) in the - body direction. It is. In other words, when the bonnet (2), which swings around the horizontal axis (X) at the rear lower end, is closed, the dustproof screen (
22) coincides with the T-degree air guide port (2o), and the cushion (21) is set to seal between the inner surface of the bonnet top surface and the top surface of the air guide port (20), and the bonnet The cooling air sucked in from above is designed to always pass through the dustproof net (22).

Furthermore, an oil cooler (23) is provided in the air guide port (20).
) are placed horizontally, and the rear vertical wall (20a)
is provided with an air intake port (24).

In other words, there is an air cleaner (2) at the rear of the radiator (6).
5), the intake port of this air cleaner (25) is connected to the intake port (24), and the dustproof screen (22) is connected to the intake port (24).
) The air cleaner is designed to suck in the air after passing through.

By the way, (26) is a battery, and (27) is an air supply manifold pipe.

Further, the cooling exhaust air generated by the fan (16) is discharged to the bottom of the aircraft body.

A grass collection container (28) is mounted on the rear bonnet (2), and the mowed grass is collected from the mower (OJ) through a duct (29).
) into this container (28).

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 drawings]

The drawings show an embodiment of a riding lawn mower according to the present invention, and the first embodiment
The figure is an enlarged side view showing the structure of the rear part, and FIG. 2 is an overall side view. (1)... Control section, (2)... Rear bonnet, (3)... Rear wheel, (4)...
・Front wheel, (5)... Seat, (6)...
Radiator, (M)...More, (E)...
···engine.

Claims (1)

[Claims] A mower (M) is connected and arranged at the front position of the traveling aircraft, a control unit (1) is installed at the front of the aircraft, and a rear bonnet (1) is installed at the rear of the aircraft.
2), and the rear wheels (3) are configured as steering wheels, the riding lawnmower having a front wheel (4) and the rear wheel (3) at an intermediate portion in the longitudinal direction, and , the control section (1
), an engine (E) is disposed at a low position below the seat (5), and a radiator (E) is disposed in the rear bonnet (2).
6) A riding lawn mower that is placed horizontally.