JP2532032Y2 - Swing mower - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swing mower suitable for orchard work.

[0002]

2. Description of the Related Art Heretofore, this type is as follows. Referring to FIG. 10, a swing mower unit 6 as in the present application is not provided.

[0003]

The problems described in the prior art have the following problems. FIG.
Referring to FIG. 0, if there is an obstacle 13 such as a fruit tree planted in the traveling direction, the obstacle located in front and behind will obstruct, and the work must be performed with a narrow cutting width.

[0004] The present application has been made in view of such problems of the prior art, and an object of the present invention is to provide one that can solve the above-mentioned problems.

[0005]

In order to achieve the above-mentioned object, the present invention is as follows. That is, in the present application, a horizontally long cover-like frame 3 continuously supported at the rear end of the main frame 2 so as to follow irregularities on the ground in a direction perpendicular to the traveling direction of the tractor, and a rear view. A sled body 3A is provided on the left side of the lever frame 3 so as to be adjustable in support height, and a front and rear adjustable wheel 3B is mounted on the forward and backward directions of the frame so as to be adjustable in support height. , 3C, a left mower part 4 attached to the left side of the frame 3 when viewed from the rear,
A right mower portion 5 attached to the right side of the frame 3 as viewed from the back, and a swing arm 6 which is vertically movable on the right mower portion 5 and which can swing back and forth.
A swing mower unit 6 connected to the right side via A and connected to the frame and the swing mower.
Release spring between the arm bracket and
This is a swing mower on which a bridge 9 is stretched .

In this case, the stepped pulley 5C connected to the upper end of the shaft 5B in the right mower 5 has an upper pulley 5C1 and a lower pulley 5C2 having a diameter larger than the diameter of the upper pulley. It is configured, and this cross-sectional shape of the V groove 5C21 lower pulley unit 5C2 is configured larger than the cross-sectional shape of the V-belt 8 to be used co
The open ends 5C22 of the V-groove have rounded corners.
The V-belt 8 can be stretched between the lower pulley 5C2 and the pulley 6E of the swing mower 6.

[0007]

An embodiment will be described with reference to the drawings. 1
Is the swing mower of the present invention. Reference numeral 2 denotes a known main frame configured to be connected to a three-point link (not shown) of the tractor. Reference numeral 3 denotes a horizontally long cover-shaped frame which is continuously supported at the rear end of the main frame so as to follow the unevenness of the ground in a direction perpendicular to the traveling direction of the tractor, and is viewed from the rear. A sled body 3A is continuously provided on one side to adjust the support height.

The mechanism for following the irregularities on the ground is constituted as follows. That is, referring to FIG. 2, cover-shaped frame 3 is attached to left and right holding brackets 2A projecting rearward from the lower side of main frame 2.
A connecting plate 3D projecting forward is inserted into the front surface of the bracket 2A so as to correspond to the holding bracket 2A.
Vertical pin 2B having B1 and upper coil spring 2B
It is tightened at 2. 2B3 is a split pin attached to the upper end of the vertical pin 2B. Front and rear free wheels 3B and 3C are attached to the frame in the traveling direction and the retreating direction so that the support height can be adjusted.

Reference numeral 4 denotes a left mower section attached to the left side of the frame 3 when viewed from the rear.
Is a cylindrical case 4A communicatively attached to the lower surface of the frame 3, and a shaft 4 rotatably supported in the case.
B and the mission 4C connected to the upper end of the shaft 4B
And a disk 4D fixed to the lower end of the shaft 4B;
And a knife 4E pivotally supported on the outer periphery of the disk 4D at a predetermined interval. In addition, frame 3
A counter pulley 4F interlocking with the mission 4C is protruded from the upper surface at a position near the mission.

Reference numeral 5 denotes a right mower section attached to the right side of the frame 3 when viewed from the rear.
Is a cylindrical case 5A communicatively attached to the lower surface of the frame 3, and a shaft 5 rotatably supported in the case.
B and a stepped pulley 5 connected to the upper end of the shaft 5B.
C and a disk 5D fixed to the lower end of the shaft 5B
And a knife 5E pivotally supported on the outer periphery of the disk 5D at a predetermined interval.

Further, the stepped pulley 5C has an upper pulley portion 5C1 and a lower pulley portion 5C2 having a diameter larger than the diameter of the upper pulley portion, and is integrally formed, and a cross section of a V groove 5C21 of the lower pulley portion 5C2. The shape is used V
The configuration is larger than the cross-sectional shape of the belt 8. The open ends 5C22 of the V-groove 5C21 have rounded corners.

Numeral 6 denotes a swing arm 6 which is movable up and down in the right mower section 5 and is swingable in the front and rear directions.
A swing mower portion 6 is connected to the right side via A. The swing mower portion 6 is a cylindrical case 6B fixed to the tip of a swing arm 6A in a vertical direction, and is rotatable to the case. Guard wheel 6 supported by
C and a shaft 6 rotatably supported in a case 6B.
D, a pulley 6E connected to the upper end of the shaft 6D,
A disk mounting plate 6F fixed to the lower end of the shaft 6D at the lower surface position of the guard wheel, a sword blade 6G mounted on the upper surface of the disk mounting plate 6F so as to protrude from the outer periphery of the disk mounting plate, and a disk mounting plate And a bowl-shaped lid 6H attached to the lower surface of 6F. In this case, the rear end of the swing arm 6A is the case 5A in the outer mower portion 5.
Arm bracket 6A rotatably mounted on the upper part of the arm
Connected to 1. 6C1 is a rubber cushion attached to the outer periphery of the guard wheel 6C.

Reference numeral 7 denotes a V extending between the counter pulley 4F and the upper pulley 5C1 of the stepped pulley 5C.
It is a belt. Reference numeral 8 denotes a V-belt stretched between a lower pulley 5C2 of the stepped pulley 5C and a pulley 6E of the swing mower 6. Reference numeral 9 denotes a release spring stretched between a predetermined location on the upper surface of the frame 3 and the arm bracket 6A1 of the swing mower unit 6. 10 is a tension roller 10 for the V belt 7
A spring for applying A and a spring 11 for applying a tension roller 11A to the V belt 8. Reference numeral 12 denotes a lower limit roller provided at a predetermined location on the lower surface of the swing arm 6A.

The operation will be described together with the effect.

[0015]

The present invention is constructed as described above and has the following effects. 1. The towing progresses while operating each mower section. In this case, the swing mower part is in contact with the ground surface 14. 2. If the ground surface has irregularities as shown in FIG. 11, the swing mower portion is supported by the swing arm 6A which can be raised and lowered in the vertical direction, and can respond to this.

In this case, the relationship between the lower pulley portion 5C2 and the V-belt 8 in the stepped pulley 5C is shown in FIGS.
The operation will be described below with reference to FIG. That is, the sectional shape of the V groove 5C21 of the lower pulley portion 5C2 is
Since the side wall surface is configured to be larger than the V-belt 8 used, when the swing arm 6A moves up and down, an arc portion 8A locked to the lower pulley portion 5C2 of the V-belt 8 and an arc portion 8A Can be coped with the spreading phenomenon of the upper part 8B and the lower part 8C with the center as the center. Moreover, since the open both ends 5C22 of the V-groove 5C21 have rounded corners as described above, the V caused by the vertical movement of the swing arm 6A.
The falling-off phenomenon of the belt 8 can be prevented.

3. Since the swing mower portion is supported by the swing arm 6A that can swing in the front-rear direction, FIG.
When the swing mower portion comes into contact with an obstacle 13 such as a fruit tree as described above, the swing mower portion slightly retreats rearward with the case 5A as a fulcrum, and this obstacle can be avoided. After the obstacle is passed, the release spring 9 returns to the original state. As a result, it is possible to perform processing with a wider cutting width than the conventional one.

[Brief description of the drawings]

FIG. 1 is a perspective view from the back.

FIG. 2 is a side view mainly showing a sled body.

FIG. 3 is a side view mainly showing a front and rear free wheel.

FIG. 4 is an enlarged rear view in which a part is cut away when the inner mower part is viewed as a center.

FIG. 5 is an enlarged rear view of the outer mower portion and the swing mower portion, with a portion cut away as viewed at the center.

FIG. 6 is a plan view illustrating a state of a V-belt accompanying the operation of a swing arm.

FIG. 7 is a plan view illustrating a state of a V-belt accompanying operation of a swing arm.

FIG. 8 shows a stepped pulley and V according to swing arm operation.
FIG. 3 is an enlarged vertical sectional view illustrating a state of a belt with one part omitted.

FIG. 9 is a plan view, partially cutaway, for explaining the operation of the swing arm.

FIG. 10 is a schematic plan view for explaining the operation.

FIG. 11 is a schematic side view for explaining the operation.

FIG. 12 is an enlarged view of a main part in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Swing mower 2 Main frame 3 Frame 4 Left mower part 5 Right mower part 6 Swing mower part 7 V belt 8 V belt

Claims (2)

(57) [Scope of request for utility model registration] 1. A horizontally long cover-like frame (3) continuously supported at the rear end of a main frame (2) so as to follow irregularities on the ground in a direction orthogonal to a traveling direction of a tractor; A sled body (3A) continuously connected to the left side of the frame (3) as viewed from the direction so that the support height can be adjusted.
And front and rear free wheels (3B, 3C) which are attached so that the support height can be freely adjusted on the traveling direction side and the retreating direction side of the frame.
A left mower part (4) attached to the left side of the frame (3) when viewed from the back; and a right mower part (5) mounted to the right side of the frame (3) as viewed from the back.
And a swing mower part (5) connected to the right mower part (5) via a swing arm (6A) that can be raised and lowered in the vertical direction and swingable in the front-rear direction. 6) and the frame and swing mower
Release spring between the arm bracket and
A swing mower characterized by having a loop (9) stretched . 2. A stepped pulley (5C) connected to an upper end of a shaft (5B) in a right mower (5),
The upper pulley (5C1) and the lower pulley (5C2) having a diameter larger than the diameter of the upper pulley are integrally formed,
The cross-sectional shape of the V-groove (5C21) of the lower pulley portion (5C2) is configured to be larger than the cross-sectional shape of the V-belt (8) to be used, and both open ends of the V-groove are formed.
The (5C22) has a rounded corner, and a V-belt (8) is stretched between the lower pulley (5C2) and the pulley (6E) of the swing mower (6). Swing mower.