JPH08256559A - Mower - Google Patents

Abstract

PURPOSE: To obtain a self-propelled mower capable of mowing in a neat finished state with driving in an attitude having a slight labor of an operator in mowing at a tilted land such as a normal plane of levee. CONSTITUTION: A mowing transmission pipe 2 extending forward from a mission case 1 is placed at a position eccentric to a side direction from a center line of the machine body paralleling to the center line of the machine body, an engine 4 and an operating handle 5 placed in rear part of the machine body are set to be able to right and left rotating/fixing on a center shaft core P1 of a mowing transmission pipe 2, the mowing device placed at a top end of the mowing transmission pipe 2 is composed of plural vertical rotation-type reaping blades 3a and 3b paralleling to a lateral direction and the reaping blades are set in freely rotating/fixing about longitudinal shaft cores positioned opposed sides of a center line of the machine body putting a shaft core P1 of a reaping transmission pipe 2 between them to obtain the objective mower.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled mower capable of satisfactorily performing mowing work on slopes of ridges.

[0002]

2. Description of the Related Art A walk-and-control type mowing system is provided in which a cutting device is provided at the tip of a cutting transmission pipe extending forward from a mission case of a traveling machine body, and an engine and a steering handle are installed at the rear portion of the traveling machine body. The machine is known.

[0003]

Although it is possible to mow the slope of a ridge by a conventional mower, if the traveling wheels are moved to move on the inclined surface when mowing the inclined surface. , The entire machine including the engine, handle, etc. tilts along the inclined surface and becomes unstable, and the labor burden on the operator to maintain the machine in that state is large, and
Since the engine leans, problems such as around the lubricating oil and poor fuel supply occur, and further, there is a problem that the mowing device does not properly follow the inclined surface and the mowing finish becomes irregular. Therefore, the present invention provides a mowing machine that can mow an inclined surface such as a levee slope while trimming to a tidy finish while operating with a posture that reduces the labor burden on the operator. It was implemented for the purpose.

[0004]

In order to achieve the above object, a mower according to the present invention has a tip of a cutting transmission pipe (2) extending forward from a mission case (1) of a traveling machine body (A). In a walk-and-control type mowing machine, in which a mowing device (3) is provided in a part, and an engine (4) and a steering handle (5) are installed in the rear part of the traveling body (A), the mowing transmission pipe (2) is provided. The engine (4) and the steering wheel (which are installed at a position laterally one side from the machine body center line (P) in parallel with the machine body center line (P) and installed at the rear part of the traveling machine body (A) ( The reaping device (3) is provided so as to be rotatable and fixed to the left and right around the shaft core (P1) of the reaping transmission pipe (2) and to be mounted on the tip of the reaping transmission pipe (2). Is composed of a plurality of vertical axis rotary cutting blades (3a) (3b) that are arranged in parallel in the horizontal direction, and these vertical axis rotary cutting blades
(3a) and (3b) are located on the opposite side of the machine center line (P) with the axis (P1) of the mowing transmission pipe (2) sandwiched between them.
It is attached so that it can be rotated left and right and fixed around (P2) and extends toward the machine center line (P) side.

Further, the mowing device (3) is attached to the mowing transmission pipe.
A longitudinal axis (P2) located on the opposite side of the machine body center line (P) across the axis (P1) of (2) and a lateral axis (Y) orthogonal to the longitudinal axis (P2) ) And a mowing unit cover (6) for covering the upper and left and right sides of the mowing device (3) and the rear side of the mowing device (3). -(6) The grass cutting outlet (6a) is opened in the rear wall, and the grass cut by the plurality of vertical rotary blades (3a) (3b) is turned backward at the central portion in the lateral width direction of the traveling body (A). The mower is designed to be discharged to

[0006]

[Function] When cutting the slope of a ridge
When (A) is positioned as expected, the traveling body (A) tilts along the slope, but at that time, the engine (4) and the steering handle (5) are appropriately rotated around the axis (P1). If it is kept in a horizontal position and fixed, the engine (4) and the steering wheel (5) will not move because the axis (P1) is laterally offset to the machine centerline (P). It is kept horizontal by approaching the mountain side of the plane. In addition, along with this, install the mowing device (3) in the longitudinal axis.
It is rotated around (P2) and fixed at a desired rotation position to follow the inclination of the slope, but the longitudinal axis (P2) is
Since it is located on the opposite side of the machine center line (P) with the axis (P1) in between, the part of the mowing device (3) located on the side of the slope can be moved greatly with a small turning angle to ensure proper operation. If the slope can be along the slope and the slope is downward in the forward direction of the machine, the circumference of the transverse axis (Y) orthogonal to the longitudinal axis (P2) By properly rotating and fixing the reaping device (3), it is possible to properly follow the slope of the slope down.

When the traveling machine body (A) is moved forward under the above posture, the cutting transmission pipe (2) supporting the cutting device (3) is located on the mountain side of the slope. ,engine
Since the (4) and the steering handle (5) are kept in a horizontal position near the mountain side of the slope, even though the vehicle is traveling on a slope, the stability of the machine body is relatively good and the operator is affected. The labor load for maintaining the attitude of the machine is reduced, and the surroundings of the engine lubricating oil and the fuel supply do not become defective, and the mowing device can be properly arranged along the inclined surface for good mowing work.

The grass cut by the cutting device (3) is not disturbed by the cutting transmission pipe (2) and the like.
Mowing part cover (6)
Since it is discharged backward from a) in the lateral center of the traveling vehicle (A), cuttings are scattered and the growth side is caused by covering the valley side of the ridge, that is, the crops planted in the field. There is no such thing.

[0009]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a plan view of a mower according to the present invention.
FIG. 2 is a side view of the same, FIG. 3 is an enlarged partial sectional view of the mission case and engine of the mower, FIG. 4 is a transmission sectional view of the mission case, and FIG. A plane sectional view, FIG. 6 is a longitudinal sectional view of the same, and FIGS. 7 and 8 are working mode explanatory views of the mower of the present invention.

1 to 6, a traveling machine body (A) comprises a transmission case (1) and a cutting transmission pipe extending from the transmission case (1).
(2) and the cutting transmission pipe (2) is the centerline of the fuselage.
Airplane center line (P) at a position laterally offset from (P)
It is provided with the axis (P1) facing in parallel with, and a reaping device (3) described later is installed at the tip thereof. Further, an engine (4) is arranged on an upper portion of the mission case (1), that is, a rear portion of the traveling machine body (A), and a steering handle (5) is integrally connected to the engine (4).

The engine (4) is a four-cycle engine with low operating noise and is mounted on the traveling machine body (A) by the following mounting means. The traveling machine body (A) is provided with an engine mounting base (7) which is rotatable left and right around the axis (P1) of the cutting transmission pipe (2).
A lock mechanism that can rotate the engine mount (7) between the (7) and the traveling machine body (A) to the left and right with respect to the traveling machine body (A) and fix it at an arbitrary relative rotation position. (8) is provided. Then, the engine (4) is mounted on the engine mounting base (7) with the output shaft (9) oriented in the same direction as the axis (P1) of the cutting transmission pipe (2). The control handle (5) is integrally connected to the base (7).

On the other hand, in the upper part of the inside of the mission case (1), the input shaft cylinder (10) concentric with the shaft core (P1) and the inside of the input shaft cylinder (10) are passed, and the cutting is performed. A mowing transmission shaft (11) is provided which reaches the mowing device (3) through the transmission pipe (2). Then, the output shaft (9) and the input shaft cylinder of the engine
Between (10), between the engine output shaft (9) and the reaping transmission shaft (11), a belt transmission mechanism with a tension clutch is provided.
(12) and (13) are linked together.

In the mission case (1), the input shaft cylinder (10) is provided with a worm gear (14), and the worm gear (14) is provided.
The Mugia (14) has a pivot shaft (1
It is meshed with a worm wheel (16) fitted in (5). Then, the pivot shaft (15) has two gears (1
7) (18) is loosely fitted, and a clutch body (19) that can be engaged with them is wedged and fitted to one gear (18) and axle (20). The forward gear train is composed of the driven gear (21) and the other gear (19) and the axle (2
0) other passive gears (22) fitted to both gears (19)
A reverse gear train is configured with an idle gear (23) meshing with (22), and the traveling wheels (24) and (24) fitted to the left and right extension parts of the axle are rotated in the forward or reverse direction. It can be driven.

The selective engagement operation of the clutch body (19) with respect to the gears (17) and (18) and the belt transmission mechanism (12) (1)
Intermittent operation of the tension clutch in 3) is the steering wheel.
It can be operated remotely by the operation tool provided in (5). Also, the engine output shaft (9) and the input shaft cylinder (1
0), the interlocking connection with the reaper transmission shaft (11) is not limited to the belt transmission mechanism, and may be any other transmission mechanism such as a chain or gear, and the transmission case (1 Also, the transmission mechanism for driving the traveling wheels formed in () is not limited to that shown in the figure, and may be appropriately modified as necessary, such as having a speed change mechanism capable of changing the traveling speed. Good.

The reaper transmission shaft (11) extending through the inside of the reaper transmission pipe (2) to the reaper (3) is a reaper.
It is plunged into the passive cutting case (25) of (3). The passive cutting case (25) is attached to the cutting transmission pipe (2) with an axis (P
1) A base case (25
a), an intermediate case (25b) rotatably and fixedly attached to a base case (25a) around a lateral axis (Y) orthogonal to the axis (P1), and A cutting blade that is attached to the intermediate case (25b) so as to be rotatable and fixed around a longitudinal axis (P2) located on the opposite side of the machine body centerline (P) with the axis (P1) interposed therebetween. It is composed of a support case (25c).
Another cutting blade support case (25) is attached to the tip of a horizontal tube (26) extending from the cutting blade support case (25c) toward the lateral direction of the machine body (P). 25d) is provided.

The base case (25a) and the intermediate case (25b) are connected by a cam (28) to a pin (27) penetrating in a direction (Y direction) orthogonal to the axis (P1). It can be fixed by tightening, and a bevel gear (29) having two teeth is loosely fitted to the pin (27), and one tooth is attached to the tip of the cutting transmission shaft (11). The fitted bevel gear (30) is meshed.

The other tooth portion of the bevel gear (29) is
A bevel gear (32) fitted to an intermediate shaft (31) extending from the intermediate case (25b) into the cutting blade support case (25c).
The longitudinal cutting shaft (33) provided on the cutting blade support case (25c) is rotationally driven by the power that is meshed with the intermediate shaft (31) and is transmitted through the intermediate shaft (31). To the cutting blade support case (25d) through the horizontal rotation shaft (34)
The power transmitted to the section drives the vertical cutting shaft (35) provided in the case (25d).

Then, the cutting blade mounting bodies (36) (36) are fitted to the hanging lower end portions of the mowing shafts (33) (35), respectively, and bowl-shaped under the respective cutting blade mounting bodies (36). The sled (37) is provided in a freely rotating manner, and the winding prevention cylinder (38) is arranged on the upper side of each cutting blade mounting body (36), and the necessary number is provided around the periphery of each cutting blade mounting body (36). The cutting blade (39) is detachably attached to form a plurality of vertical axis rotating dies (3a) (3b).

The harvesting device (3) is equipped with a vertical axis rotary type (3
a) A mowing section cover (6) covering the upper side, left and right sides and the rear side of (3b) is provided, and a mowing grass discharge port (6a) is opened in the rear wall of the mowing section cover (6). And a rubber droop (6b) is attached to the cut grass discharge port (6a), and the vertical axis rotary cutting blade (3a) (3
b) Prevents scattering of the cut grass, while running machine (A)
It is configured so that it can be discharged backward at the central portion in the lateral width direction of the.

When cutting grass on a flat ground with the grass mower configured as described above, as shown in FIG.
If the engine (4) and the traveling machine body (A) are kept in a parallel posture and the mowing device (3) at the tip of the traveling machine body (A) is kept in a horizontal posture along a flat surface, it is possible to perform conventional grass cutting. The grass is cut in the same way as the machine.

Then, when mowing the slope of the ridge, as shown in FIG. 8, the traveling machine body (A) tilts along the slope, but the engine (4) and the steering wheel ( 5)
If the shaft core (P1) is properly fixed and maintained in a horizontal posture by rotating the shaft core (P1) around the shaft center (P1), the shaft center (P1) is laterally offset to one side with respect to the machine body center line (P). (4) and the steering wheel (5) are kept horizontally near the mountain side of the slope,
Further, the reaping device (3) can be rotated along the longitudinal axis (P2) and fixed at a desired rotational position so that it can follow the slope of the ridge.

[0022]

In the mower according to the first aspect of the present invention, even when the traveling machine body (A) is tilted when the slope of a ridge is cut,
While maintaining the engine (4) and the steering handle (5) in a horizontal position and properly aligning the mowing device (3) with the slope of the ridge, while reducing the labor burden on the operator for maintaining the body position, The finished product can be satisfactorily trimmed without causing problems in the area around the engine lubricating oil or in the fuel supply.

Further, in the mower according to claim 2, the mowing device (3) is located in the front-rear direction opposite to the machine body center line (P) with the axis (P1) of the mowing transmission pipe (2) interposed therebetween. Shaft core (P2)
Not only that, but also the lateral axis (Y) orthogonal to the longitudinal axis (P2) is provided so as to be rotatable and fixed, so that the posture correction to the inclined surface is further improved.

Furthermore, in the mower according to claim 3, a mowing section cover (6) for covering the upper side, the left and right sides and the rear side of the mowing device (3) is provided, and the mowing section cover (6). The grass outlet (6a) is opened in the rear wall of the turret, and multiple vertical rotary blades (3a)
Since the cutting grass cut in (3b) is discharged backward at the lateral center of the traveling body (A), the cutting grass cut by the cutting device (3) is obstructed by the cutting transmission pipe (2) and the like. Without being cut, the grass is discharged backward from the cut grass discharge port (6a) provided on the rear wall of the mowing section cover (6) at the central portion in the lateral width direction of the traveling machine body (A) to be planted in a field. Good levee slope cutting is done without suffering.

[Brief description of drawings]

FIG. 1 is a plan view of a mower according to the present invention.

FIG. 2 is a side view of the mower according to the present invention.

FIG. 3 is an enlarged partial cross-sectional view of a mission case and an engine portion.

FIG. 4 is a transmission cross-sectional view of a mission case.

FIG. 5 is a cross-sectional plan view showing the reaping device and its drive unit.

FIG. 6 is a vertical cross-sectional view of a reaping device and its drive unit.

FIG. 7 is an explanatory view of a work aspect on a flat ground.

FIG. 8 is an explanatory view of a work aspect on a sloping ground.

[Explanation of symbols]

 A traveling aircraft 1 mission case 2 cutting transmission cylinder 3 mowing device 3a vertical axis rotary cutting blade 3b vertical axis rotary cutting blade 4 steering handle 5 engine 6 walking steering handle P machine body center line P1 longitudinal axis P2

Claims (3)

[Claims] 1. A mowing device (3) is provided at the tip of a mowing transmission pipe (2) extending forward from a mission case (1) of a traveling vehicle (A).
In a walk-and-control type mower in which the engine (4) and the steering handle (5) are installed at the rear of the traveling machine body (A), the reaping transmission pipe (2) is connected to the machine body center line (P). Install the engine (4) and the steering handle (5), which are installed parallel to each other and laterally offset from the center line (P) of the machine body, and installed on the rear part of the traveling machine body (A), to the reaping transmission. Shaft core of pipe (2) (P
A reaping device that can be pivoted and fixed to the left and right around 1) and is installed at the tip of the reaping transmission pipe (2).
A plurality of vertical rotation type cutting blades (3a) in which (3) are arranged in parallel in the lateral direction.
(3b), and these vertical rotary blades (3a) (3
Install b) so that it can be rotated and fixed left and right around the longitudinal axis (P2) located on the opposite side of the machine center line (P) with the axis (P1) of the mowing transmission pipe (2) in between. A mower characterized by being extended toward the machine centerline (P) side. 2. A cutting device (3) mounted on the tip of the cutting transmission pipe (2) is placed on the opposite side of the machine body center line (P) with the axis (P1) of the cutting transmission pipe (2) sandwiched. Positioned longitudinal axis
The mower according to claim 1, wherein the mower is provided so as to be rotatable and fixed around a bidirectional axis (P2) and a lateral axis (Y) orthogonal to the longitudinal axis (P2). 3. A mowing section cover (6) for covering the upper and left and right sides and the rear side of the mowing device (3) is provided, and the mowing grass outlet (6) is provided on the rear wall of the mowing section cover (6). 6a) is opened, and the cuttings cut by the plural vertical rotary blades (3a) and (3b) are used as the traveling body.
The lawn mower according to claim 1 or 2, wherein the central portion of (A) is discharged backward.