JP2976918B2 - Self-propelled furrow 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 self-propelled ridge mower for cutting levee and the like.

[0002]

2. Description of the Related Art Conventionally, there is a mower in which a cutting blade device, running wheels, and an engine are arranged in this order from the front of a body, and a base side of a handle bar is attached to the body. When working with this type of mower, the operator carries out the work with the free end of the handle rod of the mower.

[0003]

In the above-mentioned work traveling, the width of the ridge is narrow, so that one stroke has been cut,
In order to change direction, the worker has to walk on the slope (slope) and move in front of the mower to lift the mower main body to change direction, which is extremely inefficient. .

[0004] It is also conceivable that a worker having a handlebar is positioned on a ridge to change the direction by moving the mower in an arc shape on a slope with the worker as a center. However, in this case, if the handlebar remains in a posture parallel to the traveling direction of the wheels of the mower, the direction in which the aircraft is moved to change direction and the traveling direction of the wheels provided in the aircraft differ, and the smoothness is achieved. You cannot change direction.

[0005] In addition, when an operator moves the mower only on the slope of the ridge while cutting the grass while walking on the ridge, the handle rod is positioned parallel to the running direction of the body of the mower. If it is left as it is, the walking direction of the worker and the traveling direction of the mower are different, and smooth work traveling cannot be performed. Therefore, in order to solve such a problem, the worker walks on the ridge by setting the handle rod so as to be pivotable with respect to the body of the mower and setting the handle rod in a posture orthogonal to the traveling direction of the mower. However, it is conceivable that only the mower is biased on the slope of the ridge to cut the grass on this slope.

However, if the base side of the handlebar is mounted at a position rearward of the traveling wheels, the traveling direction of the mower naturally goes down the slope of the slope due to the weight of the body. Must work while pulling it back in the working direction along the ridge, so that it is apt to be tired and extremely poor in operability.

[0007]

The present invention employs the following technical means to solve the above-mentioned problems.
That is, during from the front of the aircraft, arranged and traveling wheels 2 and the engine 5 of the cutting blade 3 and the cylindrical sequentially, and said base side cutting blade 3 and the running wheels 2 the cylindrical handle rod 7
And a rotatable handle 4 is mounted on the free end side of the handle bar 7, and the handle is mounted near a mounting portion of the handle 4. A self-propelled ridge mowing machine is provided with a left-right balance swinging operation lever 41 for switching the rod 7 from a fixed state to a swingable state.

With this arrangement, the mowing machine of the ridge mower is operated by the driving force of the engine 5 while the operator is holding the loop-shaped handle 4 on the free end side of the handle bar 7 by the forward cutting blade device 3. while cutting the travels by a cylindrical shape of the traveling wheels 2. In the case where the direction is changed after cutting one stroke, or when the slope is to be worked, the operator holds the handle 4 while holding the handle 4 in the vicinity of the mounting portion of the handle 4 with a left-right balance swinging type. The operation lever 41 is swung in one direction to the left and right. Then, the handlebar 7 is attached to the body side on the base side.
The operator can turn the operation lever 41 in the same direction as the swing operation direction while swinging the operation lever 41.

Thus, for example, when the worker holding the handle 4 is positioned on the ridge and the mower is turned on a slope (slope) to change the direction, the handle rod 7 is used.
By appropriately changing the attitude of the vehicle, the direction in which the aircraft is moved to change the direction can be made to coincide with the traveling direction of the wheels provided on the aircraft, so that a smooth turning can be performed. Become.

For example, when the worker walks on the ridge and only mowers are biased on the slope of the ridge to cut the grass on the slope, the posture of the handle bar 7 is appropriately changed. In addition, the walking direction of the worker and the traveling direction of the mower can be made to coincide with each other, so that smooth work traveling can be performed. And the base side of the handlebar 7 is located between the cutting blade device 3 and the traveling wheel 2, and about the vertical axis 6 which is suspended from the body side.
Since it is mounted so as to be pivotable , for example, the handlebar 7 is set in a posture orthogonal to the traveling direction of the mower,
When the operator walks on the ridge while mowing only the mowing machine on the slope of the ridge to mow the grass on the slope, the fuselage has a rear portion centered on the contact portion of the cylindrical traveling wheel 2. The turning force of the engine 5 due to its own weight acts, whereby the traveling direction of the mower tends to go to the slope-inclined side of the slope. As a result, the operator can operate the loop-shaped handle 4 lightly and can work easily.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. The fuselage (body) 1
The traveling wheel 2 is mounted on the lower part, and the engine 5 is mounted on the rear part.
And a handle rod (handle rod) 7 protruding long behind.
A handle 4 is provided through the front side, and a cutting device 3 (cutting blade device 3) described later is provided at a front portion.

The handle support rod 7 is configured to be capable of turning around the longitudinal axis 6. The vertical axis 6, which is the center of rotation of the handle 4, is set in a direction perpendicular to the horizontal plane. Reference numeral 8 denotes a mission case.
Inside, gear transmission mechanisms 11 and 12 for transmitting power to a traveling transmission shaft 9 to the traveling wheels 2 and a reaping transmission shaft 10 to the reaper 3.
Has been erected. A is a drive shaft from the engine 5,
The reaping transmission shaft 10 is interlocked so as to be rotationally driven from the drive shaft A via a small-diameter gear 11a and a large-diameter gear 11b. B is a transmission clutch. When the transmission transmission shaft 9 is engaged with the gear 11b, the traveling transmission shaft 9 rotates at a low speed. When the transmission transmission clutch B is engaged with the gear 12b, the traveling transmission shaft 9 rotates at a high speed from the drive shaft A via the gears 12a and 12b. When the transmission clutch B is shifted to the neutral position, the traveling transmission shaft 9 is in a non-transmission state, and the driving of the traveling wheels 2 is stopped.

In front of the transmission case 8, a first transmission case 13 in which the cutting power transmission shaft 10 is mounted and four cutting transmission gears 14, 15, 16, 17 are engaged with each other to mount an internal shaft. A second transmission case 18 in the up-down direction and a third transmission case 20 on which a drive shaft 19 is internally mounted are provided in the front-rear direction. On the lateral side of the third transmission case 20, a driven shaft 21 parallel to the drive shaft 19 is provided so as to be supported by a support frame 22 projecting from the third transmission case 20 side. The driving wheel 19 and the driven shaft 21
And the driven wheel body 24, and the cutting device 3 is constructed by turning a band saw type endless cutting blade 25.

The traveling wheels 2 are composed of an engine 5, a transmission case 8, a first transmission case 13, and a second transmission case 18.
And the like, and is arranged below the portal space constituted by the above, and is rotatably driven from the traveling transmission shaft 9 through the worm wheel mechanisms 26 and 27, the traveling drive shaft 28, and the transmission chain 30 in the chain case 29. It is linked. The reaping transmission shaft 10 is provided with a pair of bevel gears 33 and 34 meshing with a bevel gear 32 provided on a shaft 31 orthogonal to the cutting transmission shaft 10. When the clutch 35 is engaged with the gear 33, the longitudinal axis 6 is rotated via the universal joint 38 from the bevel gear 32, the worm wheel transmission mechanisms 36 and 37, and the wheel shaft 37a, and the handle 4 is rotated clockwise. When the clutch 35 is driven on the other side, for example, on the other side of the bevel gear 34 in the counterclockwise direction, the bevel gear 32 and the worm wheel transmission mechanisms 36 and 37 are provided.
By rotating the vertical axis 6 in the opposite direction to that described above, the handle 4 is driven to turn counterclockwise. In this case, if the operator holds the handle 4 in a fixed state by an artificial operation, the reaper 3 turns right around the vertical axis 6 or turns left around the vertical axis 6.

The shifter 39 includes a clutch lever (operation lever) provided with the shifter shaft 40 on the handle 4.
The balance arm 42 is operatively connected to the balance arm 42 via operation wires 43 and 43 for reciprocating operation by 41. The clutch lever 41 is configured to be swingable in the front-rear direction around a fulcrum pin 41a in the middle. The left and right sides of the fulcrum pin 41a of the clutch lever 41 and the left and right ends of the balance arm 42 are connected to the operating wire-4.
By connecting with the clutches 3 and 43, the clutch can be engaged and disengaged.

The shifter shaft 40 has a clutch release arm.
Arm 44 and a clutch release arm 44
A tension spring 4 is provided between both ends of the
6 are provided. On the other hand, in the vicinity of the center of the longitudinal axis of the handle support 7, the clutch is operated integrally with the handle support 7 and pushes the clutch release arm 44 to forcibly operate the clutch to the disengagement side. A body 47 is provided. That is, when the clutch 35 is on the bevel gear 34 side, the handle support rod 7 turns counterclockwise, but when this turns to a predetermined position, the clutch operating body 47 pushes the clutch release arm 44 and the balance The swing of the arm 42 disengages the clutch to stop the turning of the steering wheel.

The handle 4 has a substantially rhombic loop in plan view. Therefore, when the mowing machine is used while hanging down, it is preferable to have the rear convex portion of the handle 4, that is, the portion (a). Further, even when the vehicle is traveling straight or pulled backward, it is easy to perform the work by holding the portion (a) as described above. When the handle is inclined with respect to the forward direction, work by holding the part (a) or (b).

In the drawing, reference numeral 48 denotes a shift lever, which is connected to a shift arm 49 of the shift clutch B by a shift operation wire.
It is interlocked and connected via 50. Reference numeral 51 denotes a throttle lever of the engine 5, and reference numeral 52 denotes a throttle wire. Each of the wires 43, 50, 52 is routed and held by a holder 53 near the rotation axis 6 of the handle support rod 7.

[0019]

According to the present invention, the operator can easily change the handle rod 7 to a posture corresponding to the working condition while holding the loop-shaped handle 4, thereby improving the efficiency of mowing work. I was able to. Further, the operating force of the steering wheel 4 during the work traveling can be reduced, and the worker can work easily.

[Brief description of the drawings]

FIG. 1 is a side view of a ridge mower showing an embodiment of the present invention.

FIG. 2 is a plan view of the ridge mower showing the embodiment of the present invention.

FIG. 3 is a plan view of a main part of the ridge mower showing the embodiment of the present invention.

FIG. 4 is a plan view showing an operation state of a main part of the ridge mower showing the embodiment of the present invention.

FIG. 5 is a side view of a main part of the ridge mower representing the embodiment of the present invention.

FIG. 6 is a plan view showing a cross section of a main part of the ridge mower representing the embodiment of the present invention.

[Explanation of symbols]

 2 running wheel 3 cutting blade device 4 handle 5 engine 6 longitudinal axis 7 handle rod 41 operating lever

Claims (1)

(57) [Claims] From the front of 1. A body, the cutter blade unit 3 and cylindrical shape and traveling wheels 2 and the engine 5 are arranged in this order, handle the base portion side of the rod 7 cutting blade 3 and the cylindrical running wheels 2 When
And a rotatable handle 4 is mounted on the free end of the handle bar 7 near the mounting portion of the handle 4. A self-propelled ridge mowing machine comprising a left-right balance swinging operation lever 41 for switching the handle rod 7 from a fixed state to a swingable state.