JP2996360B2 - Operating device for self-propelled ridge 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. And
For example, Japanese Utility Model Application No. 60-136624 (Japanese Utility Model Application Laid-Open No. 62-4)
No. 3983), a cutting blade device, an engine for driving the cutting blade device, and two left and right floating wheels formed to have a large diameter and a very narrow width are arranged from the front of the fuselage. A mowing machine is disclosed in which a base side of a handle bar is rotatably mounted around a longitudinal axis between the cutting blade device and an engine and wheels.

In addition, Japanese Utility Model Application No. 58-173927 (Japanese Utility Model Application
No. 60-79920), the microfilm
And the axial length is longer than the diameter and the cutter
Drive-type row with a wide interval approximately equivalent to the cutting action width
And the engine that drives these cutters and rollers
And a hand at an upper position between the cutter and the roller.
Powered lawn mower with the base side of the
You.

[0004] The microfilm of Japanese Utility Model Application No. 58-75179 (Japanese Utility Model Application Laid-Open No. 59-179526) includes two right and left floating wheels formed to be extremely narrow from the front of the fuselage, and a cutting blade. A device and an engine for driving the cutting blade device, and two left and right wheels formed to be extremely narrow are arranged, and the base side of the handlebar is positioned around the vertical axis at a position above the cutting blade device and below the engine. A pivotally mounted mower is disclosed.

The microfilm of Japanese Utility Model Application No. 58-183968 (Japanese Utility Model Application Laid-Open No. 60-89831) has a cutting blade device and a large-diameter and extremely narrow floating wheel from the front of the fuselage. And an engine for driving the cutting blade device, and a mower in which a base side of a handlebar is fixedly mounted at an upper position between the cutting blade device and wheels.

In Japanese Utility Model Publication No. 42-20672, a cutting blade device, a large-diameter and extremely narrow floating wheel and an engine for driving the cutting blade device are arranged from the front of the fuselage. There is disclosed a mower in which the base side of a handlebar is swingably mounted above the wheels and the engine. Japanese Utility Model Publication No. 37-5631 discloses a cutting blade device, three floating wheels having a large diameter and a very narrow width, and an engine for driving the cutting blade device. A mower having a handlebar base mounted above the wheels is disclosed.

[0007] When working with this type of mower, the operator carries out the work by holding the free end of the handle rod of the mower.

[0008]

In the above-described work traveling, when a worker walks on a ridge and biases only the mower on the slope of the ridge to cut the grass on the slope, a handle is used. If the rod remains in a posture parallel to the traveling direction of the mower main body, the walking direction of the operator and the traveling direction of the mower are different, and smooth work traveling cannot be performed.

[0009] Therefore, in order to solve such a problem, the handle rod is attached to the body of the mower so as to be pivotable, and the handle rod is set in a posture perpendicular to the traveling direction of the mower, so that the operator can move the handle rod upward. It is conceivable that only the mower is biased on the slope of the ridge while walking on the hill to cut the grass on this slope. However, if the base side of the handlebar is attached to a position behind the traveling wheels, the traveling direction of the mower naturally goes toward the slope-lowering side due to its own weight. Since it is necessary to work while pulling back in the working direction along the ridge, it is easy to be tired and the operability is extremely poor. In addition, hold a mower with the running wheels as fulcrums.
If you start up, it will be heavy.

[0010] Also, the base side of the handle rod is located near the cutting blade device.
When placed beside, the maintenance management of the cutting blade device is troublesome.
turn into. Further, when the wheels of the mower are formed to be narrow, even when the wheels are arranged on the left and right with two spaces therebetween, when traveling on a narrow work surface such as a ridge, There is a drawback that the wheels can easily step off the ridge and cannot perform stable work traveling.

If the rear wheels are formed narrower than the cutting action width of the cutting blade device, grass cut by the cutting blade device cannot be adjusted by passing through the wheels. There is a disadvantage that the mowing marks are disturbed.

[0012]

The present invention employs the following technical means to solve the above-mentioned problems.
That is, from the front of the body, the cutting blade device 3 and the handle rod
Longitudinal axis 6 pivotally mounted on the base side of 7 and its axis
The cutting action of the cutting blade device 3 whose length in the direction is longer than the diameter
A drive-type traveling wheel 2 formed so as to have a width substantially corresponding to the width;
An engine 5 for driving the cutting blade device 3 and the traveling wheels 2
And the vertical axis 6 is the cutting blade device 3
And located above the running wheels 2
It is a configuration of a self-propelled ridge mower .

[0013] With this arrangement, the mowing machine of the ridge mower is configured so that the operator holds the free end side of the handle bar 7 while mowing the grass with the cutting blade device 3 in front by the driving force of the engine 5 and in the axial direction thereof. The vehicle travels with the driven traveling wheels 2 having a length longer than the diameter and having a width substantially corresponding to the cutting width of the cutting blade device 3. Then, for example, when the work is run on the slope, the operator adjusts the turning of the handle rod 7 about the vertical axis 6 on the base side thereof.

That is, for example, when a worker walks on a 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 since the base side of the handlebar 7 is attached to the upper position between the cutting blade device 3 and the traveling wheel 2, for example, the operator sets the handlebar 7 in a posture orthogonal to the traveling direction of the mower. While walking on the ridge, while mowing only the mowing machine on the slope of the ridge to mow the grass on this slope, the body is centered on the grounded part of the drive wheel 2 that is formed wide and wide. The turning force due to the own weight of the rear engine 5 acts, and the traveling direction of the mower tends to go toward the slope-inclined side of the slope. As a result, the operator can hold the handlebar 7 lightly and can work easily.

Further, since the traveling wheel 2 is formed so that its length in the axial direction is longer than the diameter, even when traveling on a narrow work surface such as a ridge, the traveling wheel 2 steps off the ridge. It is difficult to perform stable work traveling. Moreover, the traveling wheel 2 is located behind the cutting blade device 3.
Since the cutting blade 3 is formed so as to have a width substantially corresponding to the cutting action width, the grass cut by the cutting blade 3 can be adjusted by passing the traveling wheels 2.

[0016]

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 loop handle 4 is provided, and a cutting device 3 (cutting blade device 3) described later is provided at a front portion. The loop handle 4 is supported by a support member 7a provided at the rear end of the handle support rod 7 so as to be rotatable about a horizontal axis X and to be able to be turned back and forth. For example, if the handle 4 is turned forward and inverted so that the handle 4 changes from a solid line state position (a) to a virtual line state position (b) as shown in FIG. This is convenient even when it is stored in a place. 7b is a support member 7 of the handle 4.
This is an unlock lever for switching between a locked state and an unlocked state with respect to a. Reference numeral 7c denotes a handle for handle, which protrudes from an upper portion on the base side of the handle support rod 7.

The handle support rod 7 is configured to be able to rotate around the longitudinal axis 6. The vertical axis 6, which is the center of rotation of the handle support rod 7, is set perpendicular to the horizontal plane. A transmission case 8 includes gear transmission mechanisms 11, 1 for transmitting power to a traveling transmission shaft 9 to the traveling wheels 2 and a cutting transmission shaft 10 to the reaper 3 in the transmission case 8.
2 are installed. A is a drive shaft from the engine 5, and a small-diameter gear 11 a and a large-diameter gear 11 b
, So that the mowing transmission shaft 10 is driven to rotate. 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 traveling transmission shaft 9 rotates at a high speed via b, and the transmission clutch B is shifted to the neutral position, the traveling transmission shaft 9 is in a non-transmission state, and the drive to 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 the internal transmission 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 interlocked so as to be rotationally driven from the traveling transmission shaft 9 via worm wheel mechanisms 26 and 27, a traveling drive shaft 28, and a transmission chain 30 in a chain case 29. The chain case 29 is installed on the side where the weight of the traveling wheel 2 is light. In other words, the weight applied to the traveling wheels 2 depends on the engine 5 and the transmission case 8.
Since a heavy object such as is shifted to the left side of the wheel 2, the weight distribution is achieved by installing a chain case 29 on the opposite light side on the light side.

The mowing transmission shaft 10 has a pair of bevel gears 3 meshing with a bevel gear 32 provided on a shaft 31 orthogonal to the mowing transmission shaft 10.
When the clutch 35 is placed on one side, that is, for example, on the right side of the turning drive system bevel gear 33, the bevel gear 32 and the worm wheel transmission mechanisms 36 and 37 are provided.
And a longitudinal axis 6 from a wheel shaft 37a via a universal joint 38.
Is rotated to rotate the handle 4 clockwise, and when the clutch 35 is inserted into the other, for example, the counterclockwise turning drive system bevel gear 34, the bevel gear 32,
The longitudinal axis 6 is rotated in the opposite direction to that described above via the muwheel transmission mechanisms 36 and 37 and the like, so that 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 has a shift lever shaft 40 provided at the rear end of the handle support rod 7.
The balance arm 42 is interlocked with the balance arm 42 via operation wires 43 and 43 so as to be reciprocated by an (operation tool) 41. The clutch lever 41 is pivotally supported at the rear end of the handle support rod 7 so as to be swingable in the front-rear direction about a fulcrum pin 41a at an intermediate portion.
Is located near the front side of the horizontal axis rotation portion 4a. By connecting the left and right sides of the fulcrum pin 41a of the clutch lever 41 to the left and right ends of the balance arm 42 with the operation wires 43 and 43, the clutch can be engaged and disengaged. It is composed.

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.

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 operating 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.

Another Embodiment The reaper 3 has a part covered with a safety cover 54. Between the backup ring 23a of the driving wheel body 23 and the rear support frame 22, a cutting blade intrusion prevention cover 55 for preventing intrusion when the band saw type endless cutting blade 25 comes off is provided.

In FIG. 10, when the cutting blade 25 comes off,
The limit arm SW is turned on by the operation of the tension arm 56, and the engine 5 is stopped so as to stop due to the on operation of the switch SW. Therefore, if the traveling is not stopped when the cutting blade comes off, there is a possibility that the cutting blade may be thrown into the machine side to cause breakage, but this can be prevented.

Reference numeral 57 denotes a scraper which is configured to constantly contact the inner surface of the cutting blade 25 to remove grass fibers adhering to the cutting blade. And this scraper-57
Is mounted on the support frame 22 via a mounting stay 58. Further, the scraper may be made to act on the outer surface of the cutting blade. Further, the scraper may be configured to be switchable between a working state and a non-working state with respect to the cutting blade, and only when necessary. It is also possible to switch to the operating state and remove the deposits on the cutting blade.

Reference numeral 59 denotes a ground contact guide for keeping the cutting height of the cutting device 3 constant.

[0028]

As described above, according to the present invention, the cutting blade device 3 and the base of the handle bar 7 can be turned from the front of the fuselage.
Vertical axis 6 attached to the shaft and its axial center length is longer than the diameter
And a width substantially equivalent to the cutting action width of the cutting blade device 3.
The formed driving type traveling wheel 2 and these cutting blade devices 3 and
The engine 5 for driving the traveling wheels 2 is arranged and arranged in order.
The vertical axis 6 is arranged above the cutting blade device 3 and the traveling wheel 2 so as to be provided on the self-propelled ridge mowing machine. The posture can be changed to a suitable posture, and the efficiency of mowing can be improved.

Further, the operating force of the handle bar 7 during the work traveling can be reduced, so that the worker can work easily. In addition, since the traveling wheels 2 are hard to step on the ridge or the like, stable work traveling can be performed. In addition, the grass cut by the cutting blade device 3 can be adjusted by passing through the traveling wheels 2, and the disturbance of the cutting marks can be reduced.

Thus, a self-propelled ridge mower with high work efficiency and good operability was realized. Furthermore, the hand
The base side of the lever 7 is behind the cutting blade device 3 and the traveling wheels
2, the handle rod
When the mowing machine is raised by pressing down the driving wheel 7, the traveling wheel 2 is supported.
Since it becomes a point, the pushing load is small. Also, c
The base side of the handle 7 is behind the cutting blade device 3 and
The cutting blade device 3 and the traveling wheel 2 are located above
Thus, the maintenance management of the cutting blade device 3 can be easily performed.
Wear.

[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.

FIG. 7 is a side view showing a cross section of a main part of the mowing device showing the embodiment of the present invention.

FIG. 8 is a plan view of a main part of the mowing device showing the embodiment of the present invention.

FIG. 9 is a front view of the reaping device showing the embodiment of the present invention.

FIG. 10 is a front view of a part of the mowing apparatus showing the embodiment of the present invention.

[Explanation of symbols]

 2 running wheel 3 cutting blade device 5 engine 6 longitudinal axis 7 handlebar

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 60-79920 (JP, U) Japanese Utility Model Sho 59-179526 (JP, U) Japanese Utility Model Sho 60-89831 (JP, U) Japanese Utility Model Sho 42- 20672 (JP, Y1) Jiko 37-5563 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01D 34/63-34/86

Claims (1)

(57) [Claims] 1. A cutting blade device 3 and a hand
A longitudinal axis 6 on which the base side of the rod 7 is pivotably mounted;
Cutting of the cutting blade device 3 whose axial length is longer than the diameter and
Drive-type traveling wheel 2 formed to have a width substantially corresponding to the working width
And an engine for driving the cutting blade device 3 and the traveling wheel 2.
A self-propelled ridge mower , wherein the vertical axis 6 is provided above the cutting blade device 3 and the traveling wheel 2.