JPH04346711A - Reaping device of levee mower - Google Patents

Abstract

PURPOSE:To suppress carrying of weeds by a wheel member by installing a scraper and a guide member in a specific state at a nonwinding part just before the upper part side in the direction of revolution from a winding part of a belt saw type endless reaping blade and a wheel member coiling the blade. CONSTITUTION:A belt saw type endless reaping blade 16 is wound around wheel members 14 and 15 held on shafts 10 and 12 in the longitudinal direction. A nonwinding part is equipped with a scraper 17 just before an upper part side in the direction of revolution from a winding part of the wheel member 14 and the endless reaping blade 16 and the scraper is provided with a guide member 18 extending approximately to height position of the center of the wheel member at a site along the outer periphery of the wheel member 14.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for a ridge mower for cutting ridge grass, etc., and more particularly to a structure of a scraper that prevents grass from getting caught in the cutting device.

0002

2. Description of the Related Art A reaping device is comprised of a pair of left and right wheels rotatable around an axis in the front-rear direction, and a bandsaw-type endless cutting blade wound between the left and right wheels. Grass often gets caught between the wheel and the endless cutting blade, and the cutting blade frequently becomes detached due to the grass becoming clogged.

[0003] Therefore, in the past, in order to prevent grass from getting caught between the wheel and the endless cutting blade at the unwound portion immediately before the upper side in the rotational direction of the wound portion of the wheel and the endless cutting blade, We attempted to solve the problem by installing a scraper, but with only this type of scraper, the grass that is being carried around accumulates on the back of the scraper and becomes lump-like because the grass rotates around the outer periphery of the wheel. It tried to be forcibly drawn in, and we could not expect a sufficient clogging prevention effect.

0004

SUMMARY OF THE INVENTION The purpose of the present invention is to eliminate such conventional defects, and to achieve this purpose, the following technical measures have been taken.

[0005]

[Means for Solving the Problems] The present invention provides a pair of left and right wheel bodies rotatably installed around a longitudinal axis at a suitable position on the front side of a machine body having running wheels 2 and a handle 3 protruding from the rear. 14, 15, and a band saw type endless cutting blade 16 wound between the wheels 14, 15. The ring body 1 is placed in the non-wound part just before the upper side in the rotational direction than the wound part of the wheel 1.
A scraper 17 is provided to prevent grass from getting caught between the cutting blade 16 and the endless cutting blade 16, and the scraper 17 is provided at a position along the outer circumference of the wheel and at a height of the axis of the wheel. It is characterized by being provided with a guide member 18 that extends close to the position.

[0006]

Therefore, according to the present invention, during grass cutting work, the grass can be reliably cut using the band saw type endless cutting blade 16 that rotates around the longitudinal axis. A scraper 17 provided at a non-wound portion immediately before the upper side of the winding portion of the wheel body 14 and the endless cutting blade 16 in the rotational direction is provided at a position along the outer circumference of the wheel body and at a position along the wheel axis center. Since the guide member 18 is provided which extends to a height close to the height of the scraper, this guide member effectively acts to suppress the rotation of the grass by the wheel, and the grass does not accumulate intensively on the back of the scraper. Therefore, the occurrence of clogging is almost eliminated, and the reaping operation can be performed smoothly.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. A machine body (vehicle body) 1 has running wheels 2 mounted on its lower part, an engine 5 at the rear, and a loop handle 4 via a handle support rod 6 which projects long backwards, and a loop handle 4, which will be described later, is installed at the front. A reaping device 3 is provided.

Reference numeral 7 denotes a transmission case, and a power transmission mechanism to the traveling wheels 2 and the reaping device 3 is housed inside the transmission case 7. In front of the mission case 7 are a first transmission case 8 in which the reaping transmission device is installed, a second transmission case 9 in the vertical direction, and a third transmission case 9 in which the drive shaft 10 is mounted internally in the longitudinal direction. The transmission case 11 is connected to the transmission case 11. The drive shaft 10 is located on the lateral side of the third transmission case 11.
A driven shaft 12 parallel to the third transmission case 11 is supported by a support frame 13 protruding from the third transmission case 11 side. 15 is mounted on a shaft, and a band saw type endless cutting blade 16 is wound around the cutting device 3 to constitute the reaping device 3. In addition, the ring body 1
Backup rings 14a and 15a are provided protruding from the outer peripheries of the rear ends of the blades 4 and 15 to prevent the cutting blade 16 from coming off to the rear side. Only the backup ring 15a on the driven wheel body 15 side is provided with a star foil-shaped protrusion 15b on the outer periphery.

[0009] Grass is caught between the wheel body 14 and the endless cutting blade 16 in the unwound portion immediately before the upper side in the rotational direction of the wound portion of the wheel body 14 and the endless cutting blade 16. A scraper 17 is provided to prevent the
A guide member 18 is provided at a position along the outer periphery of the wheel 14 and extends to near the height of the wheel axis. Reference numeral 19 denotes a cutting blade detachment prevention rod, which is located at the lower part of the outer peripheral side of the cutting blade 16, and is provided so as to sandwich the cutting blade vertically between it and the scraper 17. Then, the scraper 1
7. The guide member 18 and the cutting blade detachment prevention rod 19 are supported by a mounting stay 20 protruding from the third transmission case 11, which is a bearing portion of the wheel body 14.

The portion of the scraper 17 facing the cutting blade 16 side has a partial heel portion 17a held in contact with the cutting blade in a pressed state toward the tension side of the blade. In other parts, a predetermined gap L is provided with respect to the cutting blade. A portion of the reaping device 3 is covered with a safety cover 21. Reference numeral 22 denotes a grounding guide for keeping the cutting height of the reaping device 3 constant, and it is possible to work while maintaining a predetermined height above the ground. When it is not needed, the grounding guide 21 can be inverted upward.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a ridge mower.

FIG. 2 is a side view of the main parts of the ridge mower.

FIG. 3 is a side sectional view of the main parts of the reaping device.

FIG. 4 is a side view of the main parts of the reaping device.

FIG. 5 is a front view of main parts of the reaping device.

FIG. 6 is a front view of the main parts of the reaping device.

FIG. 7 is a plan view of the main parts of the reaping device.

FIG. 8 is a plan view of a main part of a bandsaw type endless cutting blade.

FIG. 9 is a side view of a bandsaw type endless cutting blade.

10 is a sectional view taken along the line SS in FIG. 8. FIG.

[Explanation of symbols]

1 Aircraft (vehicle body) 2. Traveling wheels 3. Reaping device 4 Loop handle 5 Engine 6 Handle support 7 Mission case 8 First transmission case 9 Second transmission case 10 Drive shaft 11 Third transmission case 12 Driven axis 13 Support frame 14 Drive wheel body 15 Driven wheel body 16 Band saw endless cutting blade 17 Scraper 18 Guide member 19　Mower blade detachment prevention rod 20 Mounting stay

Claims (1)

[Claims] 1. A pair of left and right wheel bodies 14 and 15 rotatably installed around a longitudinal axis at a suitable position on the front side of a machine body having running wheels 2 and a handle 3 protruding from the rear, and the wheel bodies. In a ridge mower equipped with a reaping device 3 consisting of a bandsaw-type endless cutting blade 16 wound between 14 and 15, the upper part in the rotational direction from the winding part of the wheel 14 and the endless cutting blade 16 is provided. A scraper 17 for preventing grass from being caught between the wheel 14 and the endless cutting blade 16 is provided in the non-wound portion immediately before the side, and this scraper has a scraper 17 on the outer periphery of the wheel. A reaping device for a ridge mower, characterized in that a guide member 18 is provided at a position along the axis and extends to near the height of the axis of the wheel.