JP2553976B2 - Mowing equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trimmer-type mowing device capable of mowing both the weeds on the upper surface of a ridge and the weeds on a slope with a single trimmer.

[0002]

2. Description of the Related Art The applicant developed a mower capable of cutting both weeds on the upper surface of ridges and slopes, and obtained the patent of Japanese Utility Model Publication No. 2-20915. , Further research, application for a mower using a mowing disk and a trimmer together (Japanese Patent Application No. 2-203305)
No.) and repeated the test, the mowing device of the present invention of a method of mowing both the weeds on the upper surface of the ridge and the weeds on the slope with a single trimmer was completed.

[0003]

The gist of the present invention will be described with reference to the accompanying drawings.

On the front side of the drive main body 2, there is provided a main body connecting cylinder 6 which is rotatable with respect to a horizontal drive shaft 26 provided on the drive main body 2, and on the front side of the main body connecting cylinder 6, the base portion of the conduction arm 5 is provided. Is attached in an orthogonal state, and the shaft cylinder 32 is attached to the front side of the tip of the conductive arm 5.
Is provided in the horizontal direction and is provided with a trimmer connecting cylinder 8 which can be rotated with respect to the shaft cylinder 32 and whose rotation angle can be adjusted and fixed facing forward, and a support cylinder 8 ′ orthogonal to the trimmer connecting cylinder 8
And a trimmer support cylinder 10 is provided so as to be reciprocally rotatable left and right with respect to the support cylinder 8 ', and a trimmer mounting body 12 in which a trimmer 13 is connected to the lower end portion of the trimmer support cylinder 10 is orthogonally arranged. A trimmer type mower in which a trimmer 13 is projected in the horizontal direction toward the front and the turning angle of the trimmer 13 can be adjusted and fixed within a turning range of about 180 degrees left and right. A worm 23 that is attached to the worm wheel 25 is rotatably provided on a bearing 23 ′ attached to the drive body 2 side, and a turntable 20 that turns the worm 23 is attached to the drive body 2. The present invention relates to a mowing device provided near the control device 4.

[0005]

The operation of the present invention will be described based on an embodiment of mowing the ridges of rice fields. When the drive main body 2 is driven to mow the upper surface of the ridges, first, the turntable 20 provided near the control device 4 is used. The worm 23 inside the bearing 23 'attached to the drive body 2 by rotating the
When is rotated, the worm wheel 25 attached to the horizontal drive shaft 26 meshing with the worm 23 is rotated. When the rotation of the turntable 20 is stopped, the rotation angle of the body connecting cylinder 6 is adjusted and fixed by the worm locking action when the turntable 20 is stopped. The main body connecting cylinder 6 is rotated and fixed so that the tip end of the conductive arm 5 provided on the front side of the cylinder 6 is obliquely downward left as shown in FIG.

By adjusting the rotation of the conduction arm 5, the height of the trimmer 13 with respect to the upper surface of the ridge, the inclination angle of the upper surface of the ridge and the trimmer 13, and the left and right positions of the trimmer 13 are adjusted.

Next, the trimmer connecting cylinder 8 is rotatably protruded on the shaft cylinder 23 protruding in the horizontal direction on the front side of the front end of the transmission arm 5, and the trimmer connecting cylinder 8 is continuously connected below the trimmer connecting cylinder 8 in an orthogonal state. The supporting cylinder 8'is fixed to the upper surface of the ridge in a substantially hanging state.

The tilt angle of the trimmer 13 with respect to the upper surface of the ridge is adjusted by the rotation of the trimmer connecting cylinder 8.

Further, the trimmer support cylinder 10 is rotated with respect to the support cylinder 8 ', and the trimmer 13 of the trimmer mounting body 12 attached to the lower end of the trimmer support cylinder 10 is fixed in the direction crossing the ridge upper surface. By the rotation of the trimmer support cylinder 10, it becomes possible to adjust and fix the angle across the upper surface of the ridge of the trimmer 13 from right side to diagonally forward.

This angle adjustment is 180
It suffices if the angle of rotation can be adjusted.

In this state, the grass cutting device is moved forward, and the trimmer 13 of the trimmer mounting body 12 cuts the weeds on the upper surface of the ridge.

Next, the case of cutting the weeds on the ridge slope will be described.

From the state of cutting the weeds on the upper surface of the ridge shown in FIG. 5, the main body connecting cylinder 6 is rotated by the rotating plate 20 so that the tip of the conductive arm 5 is located diagonally above the right slope of the ridge. The trimmer support cylinder 8 is rotated to fix the tip end of the support cylinder 8'toward the lower left as shown in FIG. 6, and the trimmer 13 is maintained at the position along the slope on the right side of the ridge. Mow the weeds on the right side of the ridge.

Further, when cutting the weeds on the left side of the ridge as shown in FIG. 7, the tip end of the conduction arm 5 is rotated by the rotating plate 20 to the left upper side of the ridge and the trimmer support cylinder 8 is rotated. Then, the tip of the support tube 8'is adjusted and fixed diagonally to the lower right, and the trimmer 13 is maintained at the position along the slope on the left side of the ridge.
Weed the left side of the ridge by trimmer operation 13

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show a self-propelled mower according to a preferred embodiment of the present invention, which will be described in detail below.

Wheels 3 are attached to a drive body 2 having an engine 1 attached thereto.
A steering wheel 14 is provided on the steering wheel 4, and a steering wheel 14 is provided with a clutch lever 15 for turning on and off power to the wheels 3 and an accelerator lever 17 for adjusting the rotation of the engine 1.

A supporting cylinder 18 is provided on the front side of the drive main body 2, and a main body connecting cylinder 6 which rotates with respect to the supporting cylinder 18 is fitted on the supporting cylinder 18, and a worm wheel is provided on the outer periphery of the main body connecting cylinder 6. twenty five
Worm 23 that is attached and meshes with this worm wheel 25
Is supported by a bearing 23 'attached to the drive main body 2, and the worm 23 is rotated via rods 21 and 22 by rotation of a rotating plate 20 with a handle attached between the left and right handles 14.

When the rotary plate 20 is rotated, the worm wheel 25 is rotated via the worm 23, and the main body connecting cylinder 6 is supported by the supporting cylinder 18.
It rotates with respect to the rotary plate 20 by the worm locking mechanism.
Since the rotation of the main body connecting cylinder 6 is fixed at the position where is stopped, the turning plate 20 is rotated to drive the distal end portion of the conduction arm 5 whose base is connected to the front side of the main body connecting cylinder 6 to drive the main body. It is fixed by rotating it at a desired angle with respect to 2.

A shaft barrel 32 is provided at the front end of the front end of the transmission arm 5 so as to project in the horizontal direction, and a trimmer connecting pipe 8 is provided with a fixing device 9 which is rotatable with respect to the shaft barrel 32 and whose rotation angle can be adjusted and fixed. Is provided, and a support cylinder 8 ′ is vertically installed on the trimmer connecting cylinder 8 in an orthogonal state.

In the fixing device 9, the base end of the trimmer connecting cylinder 8 is rotatably fitted into the shaft cylinder 32 projecting from the front end of the transmission arm 5 in a protruding state. An engaging pin 34 is fitted into 9 ', and the engaging pin 34 is elastically fitted into an engaging hole 35 formed at an appropriate interval on the outer periphery of the trimmer connecting cylinder 8 and the engaging hole 35 is selected to select the trimmer 35. The connecting cylinder 8 is fixed in a state of being rotated by a desired angle with respect to the shaft cylinder 32.

A fixing device 11 for rotating the support cylinder 8'downwardly of the trimmer connecting cylinder 8 by 180 degrees at least in the front left and right range with respect to the support cylinder 8'and fixing the rotation angle.
A trimmer support cylinder (10) attached with is provided.

The fixing device 11 adopts the same structure and operation as the fixing device 9, and the collar body 37 provided at the upper end of the trimmer support cylinder 10 is provided with engaging holes 38 perforated at appropriate intervals.
A locking pin cylinder 39 is provided at the base of the support cylinder 8'above the 37, and an engagement pin is fitted and inserted into the locking pin cylinder 39, and the engagement pin is elastically fitted into the engagement hole 38 to form a trimmer support cylinder. 10 is rotated with respect to the support cylinder 8 ', and the rotation angle is adjusted and fixed.

Next, the power transmission mechanism adopted in this embodiment will be described.

The power of the engine 1 is transmitted to the horizontal drive shaft 26, and the power is separated by a pair of wheel driving bevel gears 16 and 16 'provided in the drive body 2, and the separated power is bevel gear 16. Is transmitted to the worm gear speed change mechanism 33 via a gear transmission mechanism 51 composed of a pair of spur gears via a driven shaft 50 hung vertically to the wheel shaft 24 via a clutch mechanism 19. To stop traveling.

One of the motive powers of the horizontal drive shaft 26 is an intermediate shaft installed in the trimmer connecting cylinder 8 by the upper pulley 27, the tension pulley 31, the lower pulley 29 and the belt 30 of the belt transmission mechanism arranged in the transmission arm 5. 28 is transmitted to the upper vertical axis 42 in the support cylinder 8'through the bevel gears 40 and 41,
Rotate the centrifugal clutch shoe 43. As the rotation speed of the upper vertical axis 42 increases, the centrifugal force increases and the centrifugal clutch shoe
When the friction piece 43 is pressed against the inside of the centrifugal clutch drum 45, the lower vertical axis 44 of the trimmer mounting body 12 rotates, and a gear mechanism 47 formed by a pair of bevel gears provided at the lower end of the lower vertical axis 44.
Is transmitted to the crank drive shaft 46 via
The two cutting blades 49, 49 'are slid by the crank action of the crank mechanism 48 using the eccentric disc arranged in the above, and the weeds touching the trimmer 13 are mowed.

In this embodiment, as described above, the power from the engine 1 is passed through the horizontal drive shaft 26 in the drive body 2, the belt transmission mechanism arranged in the transmission arm 5, and the bevel gear in the trimmer connecting cylinder 8. Centrifugal clutch mechanism inside the trimmer support cylinder 10,
A power system for mowing, which drives the trimmer 13 via the gear mechanism 47 and the crank mechanism 48 of the trimmer mounting body 12, and a gear transmission mechanism 51, a worm gear speed change mechanism 33, and a clutch, in which power is separated from the drive body 2 by a bevel gear. A traveling power system for driving the wheels 3 by the mechanism 19 and a power distribution of two systems are arranged in the device. Such a power transmission mechanism is a belt / chain mechanism, spur gear / bevel gear / screw gear / worm gear. Various designs are possible by selectively adopting mechanisms and the like.

Although the present embodiment illustrates the case where the mowing device is attached to the two-wheeled vehicle, it can be applied to the case where the mowing device is attached to the tracked vehicle or the one-wheeled vehicle.

Since this machine can adjust the tilt angle of the trimmer in a wide range, it is possible to mow not only the weeds on the ridge slope but also the weeds on the paddy field of the ridge.

Further, since the center of gravity is present in the center of the machine body and only the trimmer is provided so as to project laterally, it is possible to stably mow the weeds on the upper surface of the ridge without leaving the entire width.

[0030]

Since the present invention is constructed as described above, it is possible to mow both the weeds on the upper surface of the ridge and the weeds on the ridge slope with a single trimmer. Is fixed and adjusted to a desired rotation angle by the rotation locking action of the worm and the worm wheel, and the main body connection cylinder and the trimmer connection cylinder and the trimmer support cylinder that can be rotated by adjusting and fixing the rotation angle are easily provided. The trimmer can be switched, and the height and tilt angle of the trimmer with respect to the ridge surface and the position to the left and right can be adjusted by the turning plate provided near the handle, so the grass cutting can be done immediately in response to changes in the ridge shape during mowing work. This is a very excellent practical mowing device that can continue mowing work while controlling the mowing device without stopping the device one by one.

[Brief description of drawings]

FIG. 1 is a side view of the present invention.

FIG. 2 is a side sectional view of an essential part showing the structure of the present invention.

FIG. 3 is a front sectional view of an essential part showing the structure of the present invention.

FIG. 4 is a plan view for explaining the trimmer portion of the present invention.

FIG. 5 is an explanatory front view showing a state in which weeds on the upper surface of the ridge of the trimmer portion of the present invention are mowed.

FIG. 6 is an explanatory front view showing a state where the weeds on the right slope of the ridge of the trimmer portion of the present invention are mowed.

FIG. 7 is an explanatory front view showing a state in which weeds on the left slope of the ridge of the trimmer portion of the present invention are mowed.

[Explanation of symbols]

 2 Drive body 4 Control device 5 Conductive arm 6 Main body connecting cylinder 8 Trimmer connecting cylinder 8'Support cylinder 10 Trimmer supporting cylinder 12 Trimmer mount 13 Trimmer 20 Rotating plate 23 Worm 23 'Bearing 25 Worm wheel 26 Horizontal drive shaft 32 Shaft cylinder

Claims (1)

(57) [Claims] 1. A front body of a drive main body is provided with a main body connecting cylinder which is rotatable with respect to a horizontal drive shaft provided in the drive main body, and a base of a conductive arm is arranged in an orthogonal state on the front side of the main body connecting cylinder. A shaft barrel is attached to the front side of the front end of the transmission arm in a horizontal direction, and a trimmer connecting barrel that can be rotated with respect to the shaft barrel and whose rotation angle can be adjusted and fixed is provided forward. A support cylinder is hung vertically to the connecting cylinder, and a trimmer support cylinder is provided to the support cylinder so as to be capable of reciprocating left and right, and a trimmer mounting body in which a trimmer is connected to the lower end of the trimmer support cylinder is orthogonally arranged. Is a trimmer type mower in which a trimmer is projected horizontally in the forward direction and the turning angle of the trimmer can be adjusted and fixed within a turning range of about 180 degrees left and right. A worm wheel is attached to a main body connecting tube. Attach and mesh with this worm wheel A mowing device characterized in that a worm that is attached to a drive body side is rotatably provided on a bearing attached to the drive body, and a turntable for rotating the worm is provided near a control device attached to the drive body.