JPS60237907A - Structure of riding type lawn mower - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to the structure of a riding lawn mower that cuts lawns, etc. while being ridden. This relates to the positional relationship among the blade section, engine, transmission section, and grass collection section.

-1- (1) Prior Art Conventionally, as shown in EJJ MA Publication No. 57-65124, a riding mower has been equipped with a mowing device as an attachment 1 to a mechanism of 1 to 1. It is a thing,
Since the front and rear wheels and the engine transmission section are determined in advance as the interlocking mechanism for the tractors, the position of the mulch equipment is also determined in advance, and the installation structure cannot be said to be effective overall. The overall structure becomes large, making it impossible to use for easy riding on mowing, and creating a space for installing a grass collection section after cutting, forcing a configuration that discharges the cut grass outside the machine. It was something.

(c) Problems to be Solved by the Invention Therefore, in the prior art, A3 is not suitable for riding as a dedicated lawn mowing machine, but is merely an attachment of a mowing device to a conventional mowing machine. However, when used exclusively for mowing lawns, various inconveniences arise.

-2- (d) Means for solving the problem In the present invention, the cutting blade section is arranged on the front and rear wheels, and the engine and transmission section are arranged at the rear of the wheels. By moving the grass area, the power transmission for traveling and mowing is simple and efficient. Ntzuru-Otsu no deru.

(e) Function In the present invention, a cutting blade section is disposed between the front and rear wheels, and the cutting power is transmitted from the engine behind the cutting blade section to the cutting blade section, while the driving power is transmitted to the transmission section behind the engine. In addition, the power transmission from the engine is more efficient (it can be done over the shortest distance), and grass can also be collected from the rear of the aircraft, reducing the overall efficiency to 1 to 1 as much as possible. It is possible to perform dynamic nof transmission.

Effects According to the present invention, the cutting blade section is provided between the front and rear wheels, and the stability of the cutting blade section is good.However, the cutting blade section and the transmission section from the rear engine are Since the power transmission to the machine can be carried out in the longitudinal direction, it is possible to combine it with an efficient power transmission mechanism. This has the effect of allowing stable lawn mowing work to be done while riding, without disturbing the front-rear weight balance of the machine.

(1~) Embodiments A detailed description of the embodiments of the present invention is given based on the drawings. (A> indicates a riding lawn mower, and the front part of the approximately rectangular body frame (a) is A control panel (1) is installed upright, a handle (2) is installed opposite to it, and a seat (3) is installed at the rear at -.
has been established. (4) is an accelerator pedal, (5) is a brake pedal, and (5)' is a gear shift lever.

Aircraft frame (a>In the front, left and right front wheels (6).

(6)- is installed at the rear, left and right rear wheels (7), (7)- are installed at the rear, and the rear wheels (7), (7)- are located at the center of the axle -4- (8). In order to make the wheels as small as possible so that they can perform the same function as a single wheel, the front and rear wheels are in a three-wheel configuration, and the rear axle (8) is Both ends are connected to the left and right rear ends of the fuselage frame (a) via bearing members (8)-1, and are connected to the rear wheel axle (8).
is a part of the fuselage frame (a), and the bearing member (8)-1 is attached to the fuselage frame with bolts so that it can be sharpened freely. This makes it easier to remove and replace the rear wheels (7) and (7).(b) is the axle (8)
The first step is the brake device.

Below the fuselage frame (a), the front and rear wheels (6).

Between (6)', (7), and (7)', there is a cutting blade part (N>) that bends (rear), and the cutting blade part (N) has a cutting blade part (N>).
W (n) is vertically movable via a pantograph type support mechanism (9), and the details of the 4M construction will be described later.

An engine (E) is mounted behind the cutting blade part (N) and above the fuselage frame (a), and is located below the seat (3). Further to the rear of (E), there is a vertically inclined transmission section (N
4) is connected to the fuselage frame (a), and the rear wheel axle (8) is connected to the lower end of the mission section (M)! ll
The wheels are arranged in series so that the rear wheels act as driving wheels.

Moreover, the pulley (11) provided on the output shaft (10) of the engine (E) and the input shaft pulley (
Travel drive bells 1-(13) are suspended between the engine (E) and the transmission section (M) to transmit power to the rear wheels (7) and (7)'. It consists of

In addition, when the mission section (M) is arranged on the outside of the aircraft frame (a), the treads of the left and right rear wheels (7), (7) are made slightly wider as shown in Fig. 7. In order to perform the function of the differential operating device for the left and right rear wheels (7), <7)", separate drive shafts (
8)", (8)", and a gear (812,
(8) -3 is connected in series, and the same gear is the same as the free gear of bicycles, etc. 6 = similar to one wheel] A drive unit 01i is held and -C is placed, even if one of the rear wheels falls into a depression and spins. Make sure that the other wheel on the ground contact side does not stop and performs the non-slip differential function.-C
It is an inexpensive and simple structure that maintains the function of a differential device.

If the cutting blade part (N) disposed between the front and rear wheels (6), (6)-1 (7), (7)- hovers, the cutting device tffi(n) of the cutting blade part (N> has two left and right blades (
13) and (14) are arranged on the left and right with a slight shift back and forth,
The cutting blades (13) and <14) each have a cutting blade shaft (15) in the center thereof.
), (16) are installed upright, and the right cutting blade shaft (16) has a
A gear (17) is installed to connect the right cutting blade shaft (15) to the intermediate vertical shaft (19) through the meshing gear (18) that meshes with the gear (17). The power is transmitted between the pulley (20) installed on the intermediate vertical shaft (19) and the left cutting blade shaft (15).
) is interlocked with the input pulley (21) of the U-right cutting blade shaft (15), (16) via an interlocking belt (22), and the U-right cutting blade shaft (15) and (16) are connected to each other. (15) and (, 16) are arranged to rotate outward from each other. (23) indicates a tension pulley.

The power transmission to the reaping device ([1) connected to the cutting blade section with such a configuration is performed by the engine (E), and the power transmission to the reaping device ([1] connected to the cutting blade section with this configuration is performed by the engine (E)). pulley(
24), and below it, two turn pulleys (25) arranged vertically in a direction perpendicular to the cutting blade pulley (2),
(26), and the two horizontal floating pulleys (27) and (2B>, which are located directly behind the right cutting blade shaft (16) on the right side of the turn pulleys (25) and (26>). From the cutting blade pulley (24) of the output shaft (10) of the engine (E) to the right cutting blade shaft (16), suspend the input V bell +130 to the input pulley (29). The TC tension clutch mechanism is located near the middle of the machine (30), and when the reaping device (n) is lowered by the pantograph-type support mechanism (9), the clutch mechanism is automatically activated. (31) is activated, the clutch is disengaged, and the cutting blade is kept inactive except for reaping operations.

The input pulleys (21>, (29) of the left and right cutting blade shafts (15), <16) respectively connect the blade cutting blade (
Even if 13) and (14) are caught by stones, etc., the input V bell h(
30) and damage to the input pulleys (21), (29) and other pulleys.
29) is configured by overlapping the releasable mating plates (21>-'1 and 2), and forms a pulley groove (21>-3) for suspending the input V-bell 1-(30) on the peripheral edge. The sliding mating plate (21)-2 is crimped to the mating plate (21)-1 fixed to the left and right cutting blade shafts via a spring (21)-5 supported by a pin (21)-4. Even if the input pulley is loaded during reaping work, the sliding mating plate (21>-2
resists the spring bias and separates from the other plywood V plate (21)-1, thereby releasing the load.

-9- A reaping case (S) covers the reaping blades above the reaping blades (13) and (14) and on their rotating outer periphery. The left and right discharge ducts 1-(32), <33) are connected to the left and right rear surfaces of the reaping case (S). ) are placed on the left and right sides of the aircraft,
It is connected to the grass collecting section (G) connected to the rear end of the machine frame (a) via a hitch (34), and the cut grass is distributed to the left and right sides of the machine and discharged and conveyed to the rear. It is configured as possible.

The left and right discharge ducts (32) and (33) have a flexible pipe (35) interposed in the middle, and between the flexible pipe (35) and the grass collection part (G) to the rear duct 1, the grass collection part is inserted from below. It is formed to stand upward, and the dow 1 to the rear are supported and fixed by the fuselage frame (the rear part of a> is connected to the right end from the dow 1 to the support 36), The lower end of the duct 1 to the support (36) extends at a position slightly above the ground, and the right rear wheel (7)
, (7) -10- -1~ Because the lead is narrow, even if the aircraft tilts to the left or right, the duct support (36) retains the function of a sled cup to stabilize the aircraft. 1 and the exhaust duct (32) without using the grass collection part (G) connected to the rear end of the fuselage frame (a).

(33) When connecting the discharge pipe (37) to the rear end of the machine to discharge and cover the mown grass to the rear of the machine, the discharge vibrator (37) is supported and fixed. A certain 3° grass collection section (G) is composed of a net-like flower collection box (0), and the JJI exit ducts 1 to 32 are placed at the top from the left and right ends.

(33) to collect mowed lawns, and a middle wheel (38) is installed at the lower end to facilitate traction (33).
At the same time, it is possible to separate from the fuselage frame (a) through the pitch (34).

(3) are auxiliary wheels installed at the reaping nose (7-8), which also serve as ground surface support for the reaping case (S).

-11-

[Brief explanation of the drawing]

FIG. 1 is an overall side view of the structure of the present invention. FIG. 2 is a plan view thereof. FIG. 3 is an overall plan view showing the interlocking mechanism. FIG. FIG. 6 is an enlarged sectional view of a part of the pulley shown in FIG. 1. FIG. 6 is an explanatory cross-sectional view showing the operating state of FIG. 5. FIG. Cross-sectional diagram of the mission part (A) Square lawn mower (6), (6) -: Left and right front wheels (7), (7) -: Left and right rear wheels (N): Cutting blade part (M); Mission part ( E): Injin (G): Shusobe Patent applicant Yanmar Agricultural Machinery Co., Ltd. Agent Ken Matsuo - Department 12 -

Claims (1)

[Claims] 1) Install the cutting blade section (N>) between the front and rear wheels (6), (6)", (7), and (7)', and the engine (E) and Mitsushicon section (N4) behind it. , a grass collection section (G) is installed at the rear of the machine (structure of a riding lawn mower).