JPH1084751A - Mower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect an operator from foreign matters and dust splashing backward at the time of contour-mowering grasses and trees grown on a normal surface of an embankment, etc. SOLUTION: The whole operation seat unit A mounted to the rear part of a device body 1 is covered by a hood H with a space in which one operator M can enter, and this hood H is mounted to a movable main pole 13 rotating corresponding to the inclination of the normal surface 35 of the embankment, etc., to rotate the hood H integrally with the movable main pole 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mowing machine for cutting grass and plants growing on a slope of a dike along contour lines, and more particularly, to a mowing machine irrespective of the attitude of the aircraft. The present invention relates to a mower having a configuration in which a driver's seat unit mounted on a rear portion always maintains a vertical position.

[0002]

2. Description of the Related Art Prior art will be described with reference to the drawings of the present invention as necessary. As shown in FIG. 1, rubber crawlers 2 are mounted on both right and left ends of a body 1 of a mowing machine. The reaping unit U is located at the front of the fuselage 1.
, And a driver's seat unit A is mounted at the rear. The driver M drives in the driver's seat unit A in a standing posture. As the machine body 1 advances, the hammer knife 3 constituting the mowing unit U is rotated at a high speed to mow vegetation. The applicant is Jpn.
In -68414, an application is filed for a mowing machine in which the driver's seat unit A follows the slope of the slope and maintains the vertical state at all times even when the body 1 is inclined when cutting the contours on the slope such as a dike. ing.

[0003] In the case of cutting the vegetation growing on the slope of the embankment with the above-mentioned mowing machine, foreign substances such as disposable wires scattered on the slope are cut by the high-speed rotation of the hammer knife 3. It is released at a high speed from the gap between the lower edge of the cover 4 of the mowing unit U and the ground surface, and is scattered directly or rearward after colliding with a nearby obstacle to the driver's seat unit A. There is a danger of hitting a standing driver, which is extremely dangerous. Also, at the mowing site, the hammer knife 3 rotates at a high speed to cut vegetation,
In addition, since the hammer knife 3 comes into contact with the ground surface, the surroundings of the mower are filled with dust, and the driver is forced to perform a driving operation in a severe work environment filled with dust.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a method for removing foreign matter scattered rearward when a mowing machine cuts plants growing on a slope such as a dike along a contour line. It is an object of the present invention to make it possible to perform a driving operation in a state that is safe and alleviates a harsh working environment filled with dust.

[0005]

In order to solve this problem, the present invention employs a method in which a mowing unit is mounted on a front portion of an airframe provided with a rubber crawler, and a driver operates in a standing posture. The driver's seat unit is rotatably mounted on the rear of the body via a movable main column in a vertical plane,
The driver's seat unit is a mower that is configured to always maintain a vertical position regardless of the attitude of the body, and a hood for covering the entire driver's seat unit is mounted on the movable main column. The mowing machine is configured so that the hood rotates integrally with the movable main column.

[0006] The entire driver's seat unit of the mower is covered by a hood, and the driver enters the hood and performs a driving operation in a standing posture. Even if a foreign object shredded from the front of the fuselage scatters behind, the driver is protected by the hood. Also, even if dust is full around the mower, the area around the driver is covered with a hood,
The harsh working environment filled with dust is alleviated, and the driving operation becomes easier. Furthermore, when cutting vegetation on a slope such as an embankment, if the slope of the slope changes along the direction of travel of the aircraft, the hood rotates integrally with the movable In order for the seat unit to remain vertical at all times, the driver must be safe and protected by the hood,
Moreover, the driving operation can be performed in a stable vertical posture. In addition, if the rear portion of the hood has an open structure, the driver can escape from here instantaneously in a danger such as when the body is out of balance and falls down, and is safe.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail by way of examples. As shown in FIG. 1, rubber crawlers 2 are mounted on both right and left ends of the body 1, and a mowing unit U is mounted on a front portion of the body 1 so as to be able to move up and down. A hammer knife 3 is mounted on the mowing unit U. Reference numeral 4 is a cover for preventing the cut grass and plants from scattering when the hammer knife 3 rotating at a high speed cuts the grass and plants. In the rear of the fuselage 1,
The driver's seat unit A is mounted. A rear cover 5 is attached to a rear portion of the body 1, and a body cover 6 for covering an engine portion (not shown) of the body 1 is further attached to a front portion thereof. The driver's seat unit A is entirely covered with a hood H together with a portion where a traveling lever 7 and a support arm 8 disposed above a rear portion of the body 1 are disposed. The hood H has a space into which one driver M can enter while standing. Windows 9 are provided on the front surface and both side surfaces of the upper portion of the hood H, and a transparent glass 11 is fitted into these windows 9.

The driver's seat unit A will be described. FIG.
As shown in FIG. 2, a movable main column 13 is rotatably supported on a rear surface of the body 1 via a support pin 12 in a vertical plane. That is, the axis of the support pin 12 is the center of rotation C of the movable main column 13. A footrest plate 14 is horizontally attached to the lower end of the movable main column 13. Movable main pillar 1
An inclination sensor 15 for detecting the inclination of the movable main column 13 with respect to the vertical line is provided below the bearing pin 12 on the front surface (the surface opposite to the surface facing the driver M) of the front 3.
Is installed. The tilt sensor 15 has a structure in which a tilt angle is detected by a capacitance type detection method and converted into an analog signal.

Referring to FIGS. 2 and 3, the movable main column 1 will be described.
The driving device B for rotating the motor 3 will be described. The driving device B controls the rotation of the motor 16
The bracket 18 attached to one end is supported by the body 1 via a pin 19, and the tip of the action rod 17 is
Through a pin 19. The connecting portion between the action rod 17 and the movable main column 13 is above the support pin 12 that supports the movable main column 13 to the body 1. For this reason,
When the motor unit 16 is activated and the action rod 17 advances and retreats along the arrow 22, the movable main column 13 rotates around the rotation center C in the vertical plane. The motor unit 16 of the driving device B starts and stops according to the output signal of the inclination sensor 15.

Next, the hood H detachably attached to the movable main column 13 will be described. As shown in FIGS. 4, 6 and 7, the hood H is in the shape of a vertically long box having an open rear surface and a bottom surface.
In the substantially front half, and the portion from the lower end to the predetermined height is cut off in a rectangular shape, and in side view, the central portion in the height direction projects most forward and the part from the lower end to the predetermined height Is the most receded shape. The portion from the center in the height direction to the lower end of the side portions 23 of the hood H bulges outward, and its vertical cross section has an arc shape about the rotation center C of the movable main column 13. Is formed. Also, the rear cover 5 and the body cover 6
The rear portion 6a (see FIGS. 1 and 6) of the hood H also bulges outward, and its vertical section is
3 is formed in an arc shape centering on the rotation center C of the movable main column 13 corresponding to the bulging portion. The inner diameter R ₁ of the bulging portion of the both sides 23 of the hood H is the same as that of the rear cover 5 described above.
And the outer diameter R ₂ of the bulging portion of the rear portion 6 a of the body cover 6.
Is slightly larger than For this reason, in a state where the bulging portions of both side portions 23 of the hood H are covered outside the rear cover 5 and the rear portion 6a of the machine body cover 6, the hood H is centered around the rotation center C. Can be rotated with respect to. A semi-ring shaped guide 24 is provided along the outer peripheral surface of the bulging portion of the side portion 23 at a portion of the hood H that projects most forward in the center in the height direction.

Further, the front surfaces of the most retreated portions having a predetermined height from the lower ends of both side portions 23 of the hood H are connected by a flat plate-like connecting plate 25 arranged substantially vertically.
Has a structure in which the lower end does not expand. For this reason, as shown in FIG. 4, in a front view, a portion of the hood H surrounded by the upper ends of the guide body 24 and the connection plate 25 is open, and the opening 41 is provided in the rear portion of the body 1. Of the fuselage cover 6. At the center of the connecting plate 25, an upper end is formed in a semicircular shape, and a notch hole 42 opened at the lower end is provided along the height direction. Hole 42
Is surrounded by a surrounding plate 43, and a mounting plate 44 is attached to a rear end surface of the surrounding plate 43 almost in parallel with the connecting plate 25. A space formed by the surrounding plate 43 and the mounting plate 44 is: A movable main column accommodation space 4 for accommodating the upper half of the movable main column 13
It is 5. Reference numeral 26 in FIG. 4 denotes a reinforcing rib attached to the inner peripheral surface of the hood H.

As shown in FIGS. 2, 5 and 6, a circular projection 27 is provided on the upper portion of the movable main column 13. As shown in FIG. Also, on both sides of the upper and lower portions of the movable main column 13,
Each overhanging plate 28 is provided to protrude left and right from the movable main column 13. Female screws 29 are provided on the upper and lower portions of the protrusion 27 on the movable main column 13 and on each overhanging plate 28, respectively. As described above, the connecting plate 25 of the hood H is provided with the mounting plate 44, and the mounting plate 44 has the fitting hole 31 corresponding to the protrusion 27 and the bolt hole 32 corresponding to each female screw 29. Are provided. As shown in FIG. 6, the joint between the rear cover 5 and the body cover 6 has an annular groove 3 centered on the rotation center C of the movable main column 13.
3 are formed. When the hood H is attached to the movable main column 13, the guide 24 of the hood H fits into the annular groove 33. At the same time, the fitting holes 3 of the mounting plate 44 of the hood H
The projection 27 of the movable main column 13 is fitted into the main body 1. Since the width (w) of the annular groove 33 is larger than the thickness (t) of the guide body 24, the movable body is moved by moving the guide body 24 back and forth along the width direction of the annular groove 33 when the hood H is mounted. The protrusion 27 of the column 13 can be fitted into the fitting hole 31 of the hood H. The hood H is attached to the movable main column 13 by screwing each fixing bolt 34 to each female screw 29 through each bolt hole 32. When the movable main column 13 is rotated by the driving device B, the hood H
While the guide body 24 is guided by the annular groove 33, the guide body 24 rotates about the rotation center C integrally with the movable main column 13 with respect to the machine body 1.

Referring to FIGS. 1, 7 and 8, a case will be described in which the grass mower cuts vegetation on a slope 35 such as an embankment along a contour line with reference to FIGS. During the operation, the driver M enters the hood H covering the entire driver's seat unit A, rides on the footrest plate 14 of the movable main column 13, and performs the driving operation in a standing posture. The transparent glass 11 is fitted into each of the windows 9 provided on the front surface and both side surfaces above the hood H, so that the driver M can see the front and both sides. When the hammer knife 3 is rotated at a high speed in the upper cut direction while the body 1 is advanced,
The plants are cut short and the cover 4 of the cutting unit U is cut.
Through the gap formed between the back surface of the hammer knife 3 and the outer peripheral edge of the hammer knife 3. Foreign substances such as wires are scattered on the slope 35.
After being cut by the hammer knife 3, the cutting unit U is released to the outside through a gap between the lower edge of the cover 4 and the ground surface and directly or rearward after colliding with a nearby obstacle. Although the driver M may be scattered, the driver M is safe because the whole body is covered with the hood H. In addition, since the driver M is in the hood H, the surroundings of the body 1 are also separated and protected from dust filling up,
The driving operation can be performed without being directly affected by the dust.

During the reaping of the vegetation, the body 1 is tilted in accordance with the inclination of the slope 35.
Is detected with respect to the vertical line. When the movable main column 13 is inclined, the motor section 16 of the driving device B is activated to move the action rod 17 forward or backward, and the movable main column 13
Is held vertically. The hood H rotates integrally with the movable main column 13. Therefore, even when the inclination angle of the slope 35 changes along the traveling direction of the fuselage 1, the movable main column 1
3 and the hood H rotate integrally with the body 1 and are always maintained vertically, so that the driver M can always perform the driving operation in the vertical posture. In addition, a part of the body of the driver M does not hit the hood H.

The hood H is detachable. Therefore, for example, when carrying the body 1, by removing the hood H, the space occupied by the body 1 can be reduced. Further, since the rear portion of the hood H is open, the driver M can escape from the driver's seat unit A instantly even when the balance of the body 1 is lost for some reason during the work and the body 1 falls. it can.

The movable main column 1 is integrated with the hood H.
The means for rotating the 3 in accordance with the slope of the slope to maintain the vertical state at all times comprises a tilt sensor 15 and a motor unit 16 for moving an operating rod 17 connected to the movable main column 13 in and out. It is not limited to the device performed.

[0017]

According to the mowing machine of the present invention, a hood for covering the entire driver's seat unit is mounted on the movable main column, and the hood rotates integrally with the movable main column. The following effects are achieved. (1) Since the driver's seat unit covered with the hood is always kept vertical,
The driver can operate the vehicle in a stable vertical position in a relaxed working environment without being directly affected by the dust that is filling the surrounding area, while being protected from foreign matter such as wire scattered backward. It can be carried out. Also,
Since the hood and the movable main column are integrally rotated with respect to the body, even when the driver's seat unit is rotated with respect to the body, a part of the driver's body does not hit the hood, Driving operation can be performed stably. (2) When this hood is detachably attached to the movable main column, the hood can be removed to carry the aircraft in a state where the exclusive space of the body is reduced. (3) If the back of the hood is opened,
In the event of a danger such as the aircraft falling over, the driver can escape backwards instantaneously and is safe.

[Brief description of the drawings]

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

FIG. 2 is an enlarged view of a part of the driver's seat unit A in FIG.

FIG. 3 is a plan view of a driving device B.

FIG. 4 is a front view of the hood H;

FIG. 5 is a view as viewed in the direction of the arrow X in FIG. 2;

FIG. 6 is an explanatory diagram of attachment and detachment of a hood H;

FIG. 7 is a perspective view of a portion of a driver's seat unit A of the mower according to the present invention as viewed from the rear side.

FIG. 8 is a rear view of the mower according to the present invention in a working state.

[Explanation of symbols]

 A: Driver's seat unit H: Hood M: Driver U: Harvest unit 1: Airframe 2: Rubber track 13: Movable main pillar 44: Hood mounting plate

Claims (3)

[Claims] 1. A mowing unit is mounted on a front part of a body provided with a rubber crawler, and a driver's seat unit for driving a driver in a standing posture is provided on a rear part of the body in a vertical plane via a movable main pillar. The driver's seat unit is a mowing machine configured to be always rotatable regardless of the attitude of the body, and a hood for covering the entire driver's seat unit. A mowing machine, wherein the mower is mounted on a movable main column and the hood rotates integrally with the movable main column. 2. The mowing machine according to claim 1, wherein the hood is detachably attached to the movable main column. 3. The mowing machine according to claim 1, wherein the hood has an open rear portion.