JPH1075624A - Sulky mower - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sulky mower, improved in left and right weight balance, capable of facilitating the installation and removal of a hydraulic unit, sufficiently housed in a small space and excellent in travel stability by arranging a mowing part on one side at the rear of a sulky type mobile machine body and further arranging the hydraulic unit on the other side. SOLUTION: This sulky mower is obtained by arranging a mowing part D on one side at the rear of a sulky type mobile machine body and further arranging a hydraulic unit H in order to drive the mowing part D on the other side at the rear of the mobile machine body. Furthermore, the mowing part D is preferably connected through a supporting part 50 to the rear of a seat of the mobile machine body and to outer lateral side of either of rear wheels 13 so as to freely lift and lower and freely move in the left and right directions and the hydraulic unit H is preferably connected through a three-point link mechanism E to the other side at the rear of the mobile machine body so as to freely lift and lower.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a riding mower.

[0002]

2. Description of the Related Art Conventionally, weeds growing on ridges of paddy fields and the like have been removed by manual cutting.

[0003]

However, there is a problem that the weed cutting work requires a large amount of work and time, is inefficient, and places a heavy burden on farmers.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, a mowing section is arranged at one rear side of a riding type self-propelled body, and the mowing section is driven at the other rear side of the self-propelled body. A riding mower characterized by disposing a hydraulic unit is provided.

[0005] The present invention also has the following features.

[0006] The mowing part is connected to the rear of the seat of the self-propelled body and to the outside of one of the rear wheels via a supporting part so as to be movable up and down and left and right.

The hydraulic unit is vertically connected to the other rear side of the self-propelled body via a three-point link mechanism.

[0008] The mowing part is rotated and rotated about a base end of the support part at a plurality of positions between a side use position located on the side of the fuselage and a rear use position located behind the fuselage. It was fixed freely.

[0009]

Embodiments of the present invention will be described with reference to the drawings.

1 to 3 show a riding mower A according to the present invention.
The riding mower A is a riding type self-propelled vehicle B
And a hydraulic unit H which is detachably connected to the mowing part D.

The self-propelled body B is mounted on the upper surface of the body frame 1,
A motor unit 3 having a built-in engine 2, a steering wheel 4, a floor 5, a seat 6, and a link base 7 of a three-point link mechanism E are arranged in order from the front, and an operation column 8 is erected on the side of the seat. On the upper surface of the operation column 8, an operation lever 9 is erected upright.

Further, front and rear axles 10, 11 are disposed below the front and rear portions of the body frame 1, and left and right front and rear wheels 12, 12, 13, 13 are supported on the front and rear axles 10, 11, respectively. The power from the vehicle is transmitted to the left and right front wheels 12, 12, 13, and 13 via a transmission case 14 and a front and rear differential case (not shown), and the left and right front wheels 12, 12 are operated by turning the steering handle 4.
, And the self-propelled body B can be turned. In the figure,
Reference numeral 15 denotes a weed body surrounding the front side and the left and right sides of the left and right front wheels 12, 12, 16 is a shift lever, 17 is a planting clutch lever, 18 is a planting height adjusting lever, and a planting clutch lever 17 is provided.
The planting height adjusting lever 18 is used when the self-propelled body B is used as a rice transplanter.

In this embodiment, the self-propelled airframe B secures a high ground height of the airframe 1 and travels on a wetland in which seedlings are planted in summer, while the mowing section D described later makes use of the ridge F. A self-propelled body of a riding-type rice transplanter is used so that a mowing operation can be performed to cut weeds that have grown in the field, and a mowing operation can also be performed while traveling on a dry field.

The mowing section D includes a mowing section main body 20 for cutting weeds growing on the upper surface F1 and the side surface F2 of the ridge F, and a mowing section main body.
And a supporting portion 50 for supporting the 20 in a vertically movable manner.

As shown in FIGS. 2 to 4, the mowing section main body 20 is connected to left and right support frames 21 and 22 also serving as a cover via a refraction shaft 23 in the front-rear direction. The left and right mowing shafts 24 and 25 are erected rotatably inside the, respectively, the left and right mowing blades 26 and 27 are connected to the lower ends of the left and right mowing shafts 24 and 25, respectively, and the upper ends of the left and right mowing shafts 24 and 25 are respectively installed. Left and right passive bevel gears 28 and 29 are fitted.

On the other hand, a hydraulic motor 30 operated by pressure oil from a hydraulic unit H described later is mounted on the upper surface of the right support frame 22,
A drive shaft 32 is connected to an output shaft 31 of the hydraulic motor 30, and left and right driving bevel gears 33 and 34 meshed with the left and right passive bevel gears 28 and 29 are fitted to the drive shaft 32.

The drive shaft 32 is provided with a telescopic spline portion 36 having flexible joints 35 attached to both ends at both ends, between the right and left driving bevel gears 33 and 34, as shown by a dashed line in FIG. The left and right support frames 21, 22 around the refraction axis 23
The power is transmitted without any trouble even if the light is refracted.

An adjusting pin support 37 extending obliquely to the upper left is projected from the upper surface on the left side of the right support frame 22, and a plurality of bending angle adjusting pin insertion holes 38 are formed in the adjusting pin support 37. On the other hand, a refraction angle adjuster 39 extending diagonally to the upper right is protruded from the upper surface on the right side of the left support frame 21, and a long hole is formed in the refraction angle adjuster 39.
40 is formed, and the refraction angles of the left and right support frames 21 and 22 are adjusted with some play by replacing the refraction angle adjustment pins 41 that are commonly inserted into the same holes 40 and refraction angle adjustment pin insertion holes 38. It is possible. The drive shaft cover 42 is covered above and behind the drive shaft 32 by a drive shaft cover 42. The drive shaft cover 42 is moved along with the alternate long and short dash line in FIGS. As shown by, the drive shaft cover 42 is moved so that the cover state of the drive shaft 32 can be maintained.

The base ends of the support arms 43, 43 bent in substantially L-shape are attached to the outer surfaces of the left and right support frames 21, 22, respectively. Of the caster wheels 44,44
Are positioned in front of the central portions of the left and right support frames 21 and 22, respectively, and wide rollers 45 and 45 extending in the left and right direction are respectively supported behind the right and left support frames 21 and 22 to support the caster wheels 44 and 44. And rollers 45 and 45 are connected to the upper surface F1 and the side surface of the ridge F.
By rolling F2, a part of the weight of the mowing unit main body 20 is supported.

With the above structure, the mowing section main body 20 can be bent to perform mowing work on the upper surface F1 and the side surface F2 of the ridge F, as shown by the alternate long and short dash line in FIGS.
As shown by the solid line in FIG. 4, the mowing operation can be performed on the flat ground K without bending the mowing portion main body 20.

As shown in FIGS. 1 to 3, the support portion 50 is attached to one side (the right side in the present embodiment) of the self-propelled body B, and is mounted on the right side of the body frame 1 above the rear axle 11. A support base 51 protrudes rightward on the surface, and a base of a turning base 53 is pivotally connected to a right end of the supporting base 51 via a vertical turning shaft 52 so as to be rotatable. One fixed pin insertion hole 69 is formed in the base 51, and a plurality of fixed pin insertion holes 70 are formed in the base of the swivel base 53, and the fixed pin insertion holes 69 and 70 are inserted in common. By replacing the pin 71, it can be fixed at a plurality of rotational positions.

A mounting member 54 having a substantially U-shape in plan view is continuously provided at a tip end of the turning base 53, and a base of a boom support 55 having a substantially right triangle in a front view is inserted into an opening of the mounting member 54. Then, the boom support 55 is detachably mounted on the turning base 53 by inserting and removing the mounting pin 56 through which the mounting member 54 and the boom support 55 are inserted in common.

At the lower right end of the boom support 55,
Boom whose tip is bent downward to form a generally rectangular shape
The base end of the boom 57 is pivotably connected to the boom hydraulic cylinder 58 between the upper part of the boom 57 and the upper right end of the boom support 55.
And a first upper link at the end of the boom 57.
59, a first lower link 60 and a first floating link 61
A parallel link mechanism 62 is continuously provided, and a link hydraulic cylinder 63 is interposed between the lower surface of the middle part of the boom 57 and the middle part of the first upper link 59. The second upper link 68a is connected to the second upper link 68a such that the second front link 65, the second rear link 66, and the second
A floating link 67 is connected to form a second parallel link mechanism 68, and the second floating link 67 is provided on the upper surface of the right support frame 22 described above.
It is connected to a connecting member 69 that is erected and rotatable and fixed.

Further, a pedestal 68c having a disk 68b fixed on the upper surface thereof between the first floating link 61 and the second upper link 68a.
Is rotatably connected to the disk 68b and the first floating link.
A plurality of fixed pin insertion holes 68d are formed on the first parallel link mechanism 62 and the plurality of second parallel link mechanisms 68 with respect to the first parallel link mechanism 62 by exchanging the fixed pins 68e commonly inserted into the fixed pin insertion holes 68d. It can be fixed at the turning position of.

A substantially disc-shaped rotation preventing member 69a is fixed to the lower end of the connecting member 69, and the rotation preventing member 69a is
And the right support frame 22 are formed with a plurality of rotation prevention pin insertion holes 69a, and the rotation prevention pins 69c inserted through the rotation prevention pin insertion holes 69a of the rotation prevention member 69a and the right support frame 22 in common. , The mowing part main body 20 can be fixed to the support part 50 at a plurality of rotation positions.

As described above, the base end of the supporting portion 50 is rotatable and fixable with respect to the body, and further, two rotatable fixing portions are provided in the middle of the supporting portion 50. Since the tip of the mowing part 50 and the mowing part main body 20 are freely rotatable and fixed, the mowing part main body 20 is provided.
Since you can freely set 20 positions and directions,
The mowing work can be performed not only on the ridge F but also on the flat ground K, and the position of the mowing unit main body 20 with respect to the aircraft can be moved and fixed, and the direction of the mowing unit main body 20 can be changed and fixed. Since it is possible, the side use position G in which the mowing section main body 20 is extended to the side of the body, the rear use position J in which the body is positioned at the rear of the body, the intermediate position between the above use positions GJ, etc.
It can cope with mowing work in various use conditions.

As shown in FIGS. 1 to 3, the hydraulic unit H is connected to a self-propelled body B via a three-point link mechanism E. In this embodiment, the three-point link attached to the rice transplanter is used. The mechanism E is used.

The three-point link mechanism E pivotally connects the front ends of the top link 75 and the lower link 76 to the link base 7 so as to be rotatable. An elevating link 78 having upper and lower hooks 77, 77 opened upward is pivotally connected, and an elevating hydraulic cylinder 79 is interposed between the link base 7 and the elevating link 78.
The lifting and lowering link 78 is configured to be moved up and down while being held substantially vertically by the expansion and contraction operation. Also, the top link 75 is constituted by a hydraulic cylinder, and the lifting link 78
The front and rear inclination can be adjusted.

On the other hand, as shown in FIGS. 1 to 3, the hydraulic unit support frame 80 is formed by two square pipes extending vertically.
And the upper and lower engaging pins 81, 8
1 and project the upper and lower engaging pins 81, 81 into the upper and lower hooks 7.
7, 77 to support the hydraulic unit H mounted on the hydraulic unit support frame 80.

As shown in FIGS. 1 to 3, the hydraulic unit H is provided with a substantially rectangular box-shaped hydraulic oil tank 82 at an upper portion thereof, and a hydraulic pump 84 is skewer-shaped below a connecting pipe 83 below the hydraulic oil tank 82. The hydraulic pump 84 is provided from the front end of the engine 2 to the belt interlocking mechanism 85, the front drive shaft 86, and the first transfer case 8.
7. Power is transmitted to the hydraulic pump 84 via the rear drive shaft 88, the second transfer case 89, and the final drive shaft 90. Note that universal joints 35 are provided at both ends of each drive shaft 86, 88, 90.

The discharge side of the hydraulic pump 84 is connected to the inflow side of a hydraulic directional control valve (not shown) disposed in the operation column 8 via a hydraulic hose 91, and the outflow side of the hydraulic directional control valve is connected. The hydraulic motor 30 and each of the hydraulic cylinders 58, 63, 79
The hydraulic device is driven by the tilting operation of the operation lever 9, and the return oil from the hydraulic device is transmitted via a header 92 that is provided in communication with the upper portion of the hydraulic oil tank 82. The operation oil tank 82 is returned.
In the figure, 93 is an air vent pipe, and 94 is an oil filler.

A support leg 95 having a lower portion bent rearward and formed in a substantially L-shape in a side view is inserted through the two square pipes of the hydraulic unit support frame 80 so as to be slidable up and down.
The supporting leg 95 can be moved up and down and fixed by inserting and removing the 96. When the hydraulic unit H is removed from the self-propelled body B, the hydraulic unit H is supported by the supporting leg 95, and the hydraulic pump
84 keep out of contact with the ground.

The embodiment of the present invention is configured as described above. By operating the operation lever 9 of the operation column 8, the boom hydraulic cylinder 58 and the link hydraulic cylinder 63 are operated to lower the lower surface of the mowing section main body 20. The mowing part body 20 is brought into contact with the upper surface F1 and the side surface F2 of the ridge F, and pressurized oil from the hydraulic unit H.
By driving the riding mower A while operating, the weeds growing on the upper surface F1 and the side surface F2 of the ridge F can be cut.

In particular, by disposing the mowing part D and the hydraulic unit H on opposite sides of the riding mower A, the weight balance between the left and right is improved, and the running stability and operability are improved.

Further, since the mowing part main body 20 is free to bend and has some play to be fixed freely, the mowing part main body 20 can be arranged along the upper surface F1 and the side surface F2 of the ridge F. The boom 57 and the first parallel link mechanism 6262 which are movable in the left-right vertical plane connected to the body frame 1 and the main body 20 are connected to the front end of the first parallel link mechanism 6262 in the front-rear vertical plane. It is hung at the tip of the movable second parallel link mechanism 68, and the lateral overhang amount and height of the mowing unit main body 20 can be set freely, so that it can cope with ridges F of various shapes. Since the caster wheels 44, 44 and the rollers 45, 45 are disposed on the lower surface of the mowing section main body 20, the left and right mowing blades 26, 27 are fixed to the upper surface F1 and the side surface F2 of the ridge F. By keeping the interval and following, it is possible to mow the ridges evenly.

Further, since the mowing section main body 20 is driven by hydraulic pressure, the driving mechanism requires only the piping of the hydraulic hose 91 to simplify the structure.

Further, in this embodiment, since the self-propelled body B is a self-propelled body of a riding type rice transplanter, the cost can be reduced. Even when the riding mower A is run, the wheels 12, 12, 13, 13 pass between the stocks, and the left and right front wheels 12, 12 are surrounded by a weeding body 15,
Since the mowing section main body 20 is suspended from above, weeds in the furrow can be cut without damaging the grown rice.

[0038]

According to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, the mowing portion is disposed on one side of the rear portion of the riding type self-propelled body, and the hydraulic unit for driving the mowing portion is disposed on the other side of the rear portion of the self-propelled body. By doing so, the weight balance of the right and left of the riding mower is improved, and running stability at the time of ridge running such as paddy fields is improved,
Work can be performed smoothly.

According to the second aspect of the present invention, the mowing section includes:
Behind the seat of the self-propelled body, and to the outside of one of the rear wheels, the grass mowing part is easily visible from an operator seated on the seat by being connected via a support so as to be able to move up and down and to move in the left and right directions. As it becomes easier to use,
Since the mowing part is located on the side of the rear wheel, the front-rear weight balance can be improved.

According to the third aspect of the invention, the hydraulic unit is connected to the other rear side of the self-propelled body so as to be able to move up and down via a three-point link mechanism, thereby realizing the improvement of the left-right weight balance. And the attachment and detachment of the hydraulic unit becomes easy.

In the invention according to claim 4, the mowing part is
With the base end of the support portion as a center, by being supported rotatably and freely at a plurality of positions between a side use position located on the side of the fuselage and a rear use position located behind the fuselage, It is possible to cope with mowing work in various use conditions, and when traveling on a road for movement between fields,
Since the mowing part can be rotated to the rear use position to reduce the lateral width of the body, driving becomes easy and the storage space of the riding mower can be reduced.

[Brief description of the drawings]

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

FIG. 2 is a plan view of the same.

FIG. 3 is a rear view of the same.

FIG. 4 is a rear view of the mowing section main body.

[Explanation of symbols]

 A Riding mower B Self-propelled body D Mowing part E Three-point link mechanism G Side use position H Hydraulic unit J Rear use position 6 Seat 13 Rear wheel 50 Support

Claims (4)

[Claims] 1. A mowing part (D) is arranged on one side of a rear part of a riding type self-propelled body (B), and the mowing part (D) is driven on the other side of a rear part of the self-propelled body (B). Mowing machine characterized by arranging a hydraulic unit (H) for use. 2. The mowing section (D) is located behind a seat (6) of the self-propelled body (B) and outside one rear wheel (13).
The riding mower according to claim 1, wherein the mowing machine is connected via a support portion (50) so as to be movable up and down and left and right. 3. The self-propelled body includes the hydraulic unit (H).
2. The riding mower according to claim 1, wherein the other rear side of the rear mower (B) is connected via a three-point link mechanism (E) so as to be able to move up and down. 4. The side mowing portion (D) is located at a side use position located on the side of the fuselage with the base end of the support portion (50) as a center.
3. The riding mower according to claim 2, wherein the mowing machine is rotatably and fixedly supported at a plurality of positions between (G) and a rear use position (J) located behind the fuselage.