JPH10337108A - Mowing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the mowing of furrows of various shapes. SOLUTION: This mowing apparatus is composed by supporting an upper link mechanism 13 at the tip of an operating boom 12 supported on a car body 4 of a tractor 1, supporting a lower link mechanism 14 to the lower part of the upper link mechanism 13, attaching the first mowing machine 21 under the lower link mechanism 14 and connecting the second mowing machine 22 through a hinge means 25 to the left end of the first mowing machine 21 so as to enable the shaking in the vertical directions and positioning at a prescribed shaking angle. Cutters 31 and 32 of the two mowing machines 21 and 22 are driven with one hydraulic motor 33. Furthermore, an auxiliary mowing machine 23 is attached through another hinge means 38 to the right end of the first mowing machine 21 so as to enable the positioning at a prescribed shaking angle in the vertical directions. An auxiliary cutter 41 of the auxiliary mowing machine 23 is driven with an auxiliary hydraulic motor 39.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mowing device mounted on a tractor, a passenger management machine, a construction vehicle, or the like.

[0002]

2. Description of the Related Art A conventional mowing apparatus is disclosed in Japanese Utility Model Laid-Open No. 7-7334. The conventional mowing device is configured such that a rotary blade unit provided with two cutters can swing up and down.

[0003]

The above prior art has the following problems. As shown in FIG. 9, when mowing the ridge 53 of the paddy field 52 with the rotary blade unit 51, the width of the ridge 53 is larger than the width of the unit 51.
If the width of the rice is narrow, the rice 54 in the paddy field 52 may be erroneously cut off. Furthermore, since it is necessary to cut the upper surface of the ridge 53 and the left and right inclined surfaces individually, it takes time and effort to cut the grass. An object of the present invention is to eliminate the above-mentioned problems of the conventional technology.

[0004]

In order to achieve the above-mentioned object, the invention according to claim 1 includes a mowing device as shown in FIGS. 1 to 4 or FIGS. 5 to 7, for example. It was configured as follows. A plurality of mowers 21 and 22 arranged in series in the horizontal direction are connected to each other so as to be able to swing up and down and can be positioned at a predetermined swing angle, and the cutters 31 and 32 of each of the mowers 21 and 22 described above. Drive means 33
The auxiliary mower 23 (45) is set at a predetermined swing angle in the vertical direction at at least one end of both ends in the connecting direction of the plurality of mowers 21 and 22 connected to each other. The auxiliary mower 23 (45) is configured to be switchable between the use posture X and the non-use posture Y by being mounted so as to be positionable.
Is configured to be drivable by the auxiliary driving means 39.

[0005] The mowing apparatus 2 according to the first aspect of the present invention.
For example, as shown in FIGS.
It is used as follows when cutting grass. FIG. 4 (A)
As shown in the figure, when mowing the upper surface of the ridge 43 and the left slope at the same time, the left second mower 22 is bent obliquely downward with respect to the right first mower 21 and the auxiliary mower 23 is not used upward. Bend to posture Y,
In this state, the mowing device 2 is advanced. Thereby, the upper surface of the ridge 43 and the left slope can be mowing at the same time.
It is possible to prevent the rice 8b in the paddy field 8 from being cut off by mistake.

As shown in FIG. 4B, when mowing the upper surface of the wide ridge 43 and the left and right slopes, the mowing device 2 is connected to a solid line diagram similar to FIG. 4A. What is necessary is just to move forward in the bent state, and then to retract in the bent state shown in the dashed line diagram. As shown in FIG. 4 (C), when mowing the upper surface of the wider ridge 43 and the left and right slopes, the auxiliary mower 23 is used for the first mower 21 as shown in a solid line diagram. X, and the mowing device 2 is advanced in this state. Thereafter, as shown in the dashed line diagram, the auxiliary mower 23 is in the non-use state Y.
, And the mowing device 2 may be retracted in that state. As shown in FIG. 4D, when mowing only the upper surface of the wide ridge 43, all of the two mowers 21 and 22 and the auxiliary mower 23 may be used.

Therefore, the first aspect of the present invention has the following effects. When the terrain to be mowing is different, the mowing machine and auxiliary mowing machine can be bent and the auxiliary mowing machine can be switched between the use position and the non-use position according to the terrain, so that the mowing can be smoothly performed without accidentally cutting rice or the like. Can be performed. In addition, the mowing work can be performed efficiently because the slope and the upper surface of the ridge and the like can be mowing at the same time.

[0008] The invention of claim 2 provides the above-mentioned claim 1.
In the mowing apparatus described in (1), for example, as shown in FIG. 8 (and FIG. 3), the auxiliary mowing machine 23 is configured to be switchable between a use posture X and a non-use posture Y, It is configured to be detachable from the mowers 21 and 22. According to the second aspect of the invention, by using the mowing device in a state where the auxiliary mower is removed from the plurality of mowers, the same operation and effect as when the auxiliary mower is switched to the above-mentioned non-use position can be obtained. Therefore, mowing can be smoothly carried out without accidentally mowing rice or the like. In addition, it is also possible to mow the slope and the upper surface of the ridge and the like at the same time, so that the mowing work is also easy.

In the case where any one of the plurality of mowers is supported on the tip of a working boom of a working vehicle, the working boom may be mounted on the working boom. The mowing device can be operated easily and easily by utilizing. According to a fourth aspect of the present invention, the drive means for the mower and the auxiliary drive means for the auxiliary mower are constituted by a hydraulic motor, and these drive means are attached to and detached from the hydraulic pump unit of the work vehicle. When freely connected, the driving sources of the respective driving means can be arranged outside the mowing device, so that the mowing device can be made lightweight and compact. Also, the attachment and detachment of the driving means,
It can be easily done simply by connecting and disconnecting the hydraulic circuit.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. First, the structure will be described with reference to FIGS. FIG. 1 is a view of the mowing device 2 viewed from the rear side in the traveling direction of the tractor 1 during mowing work. FIG.
FIG. 2A is a plan view of the mowing device 2 taken along the line AA in FIG. 1 described above. FIG. 2 (B) is the same as FIG.
It is a BB line arrow line view in the inside, and is a side view of the said mowing apparatus 2. FIG. FIG. 3 is a schematic diagram for explaining the operation of the mowing device 2 described above. In each of the drawings, the arrow F indicates the front side of the tractor 1 in the front-rear direction (running direction), and the arrow R
Indicates the rear side in the front-rear direction, and the arrow W indicates the vehicle width direction of the tractor 1.

A mowing device 2 is detachably attached to a rear portion of the tractor 1 via an operating device 3. Reference numeral 4 denotes a vehicle body of the tractor 1, and reference numeral 5 denotes a rear wheel. Reference numeral 6 indicates a rear axle, and reference numeral 7 indicates an operation seat. Symbol 8 is
It is a paddy field where the grass is cut. The operating device 3 includes a mounting frame 10 removably supported on the rear portion of the vehicle body 4 and the rear axle 6, a bracket 11 supported on the frame 10 so as to be horizontally pivotable, and a vertical swing The vehicle includes a boom 12 movably supported, an upper link mechanism 13 supported at a tip end of the boom 12, and a lower link mechanism 14 supported by the upper link mechanism 13. The mowing device 2 is supported by the lower link mechanism 14.

The boom 12 is provided with the first hydraulic cylinder 1
6 is operated to swing up and down. The upper link mechanism 13 is of a parallel link type, and is swingably operated in the vehicle width direction W by the second hydraulic cylinder 17. The lower link mechanism 14 is also configured as a parallel link type, and is rotatable in the front-rear direction (the traveling direction of the tractor 1). The lower link mechanism 14 can be switched to a desired turning position in the horizontal plane with respect to the upper link mechanism 13 by the turning switch 19.

The mower device 2 comprises first and second two mowers 21 and 22 connected in series in the horizontal direction.
An auxiliary mower 23 is connected to the right end of the first mower 21 on the right side. The supported portion S of the first mower 21 is connected to a lower portion of the lower link mechanism 14. The first mower 21 and the second mower 22 have a first frame 21a and a second frame 22a which are substantially symmetrical, and the second frame 22a is hinged to the first frame 21a. Can be bent to a desired angle (see FIG. 3). Although not specifically shown, the hinge means 25 includes a plurality of hinges and a positioning pin for adjusting a bending angle.

A front contact wheel 27 and a rear contact wheel 28 are supported on the frames 21a and 22a so that the height can be adjusted. The first frame supported by the first frame 21a
The cutter 31 and the second cutter 32 supported by the second frame 22a are rotated by a hydraulic motor (drive means) 33. The hydraulic motor 33 is supported by the first frame 21a, and is connected to the first motor 21 via the right gear box 34.
The right gearbox 3 is connected to the cutter 31 and
4, a telescopic inclined propeller shaft 35 and a left gear box 36 are connected to the second cutter 32 in this order.

The auxiliary frame 2 of the auxiliary mower 23
3a is supported by the first frame 21a so as to be vertically swingable and positionable at a predetermined swing angle by another hinge means 38 (see FIG. 3). The other hinge means 38
Are configured substantially the same as the hinge means 25.
Auxiliary hydraulic motor mounted on auxiliary frame 23a
(Auxiliary driving means) 39 is connected to an auxiliary cutter 41 via an auxiliary gear box 40. Each of the above hydraulic motors 3
Reference numerals 3 and 39 are detachably connected to a hydraulic pump unit (not shown) mounted on the tractor 1 via a plurality of quick couplings.

The mowing device 2 is used as follows, as shown in FIGS. Tractor 1 in paddy field 8
And turning the boom 12 in the vertical direction and the upper link mechanism 13 in the vehicle width direction W, so that the ground contact wheels 27 and 28 in front and behind the mower device 2 are moved to the mowing surface 8 of the paddy field 8.
a.

Thereafter, the tractor 1 is advanced to the front side F while rotating the cutters 31, 32, 41 to cut the grass on the grass cutting surface 8a. During the mowing, if the mowing surface 8a has a convex portion, the lower link mechanism 14 is rotated upward rearward following the convex portion, and the mowing device 2 is inserted into the concave portion of the mowing surface 8a. In this case, the lower link mechanism 14 in the rear upward rotation posture is returned and rotated forward and downward. As a result, the grass on the mowing surface 8a is cut off smoothly. In addition, even when an obstacle collides with the mowing device 2, the lower link mechanism 14 is rotated rearward and upward as described above, so that the obstacle can be avoided smoothly.

The above-described mowing device 2 is used as follows, as shown in FIG.
As shown in FIG. 4A, when mowing the upper surface of the ridge 43 and the left slope, the second mower 22 is bent obliquely downward with respect to the first mower 21 and the auxiliary mower 23 is not used upward. It is bent to the posture Y (see the dashed line in FIG. 3). In this state, the cutter 31.3 (not shown)
The mowing device 2 is advanced while rotating the mowing device 2. Thereby, it can prevent that the rice 8b of the paddy field 8 is cut by mistake.

As shown in FIG. 4B, when mowing the upper surface of the wide ridge 43 and the left and right slopes, as shown in a solid line diagram, the same bent state as that of FIG. 4A is used. The mowing device 2 may be advanced while rotating the cutters 31 and 32 (not shown), and then the mowing device 2 may be retracted in the bent state shown in the dashed line diagram.

[0020] As shown in FIG.
When mowing the upper surface and the left and right slopes, the auxiliary mower 23 is switched to the use state X with respect to the first mower 21 as shown in the solid line diagram, and in this state, the cutter 31 (not shown) is used. Moving the mowing device 2 forward while rotating the 32 and the auxiliary cutter 41; Thereafter, as shown in the dashed line diagram, the auxiliary mower 23 is switched to the non-use state Y, and the mowing device 2 may be retracted in that state.

As shown in FIG. 4D, when mowing only the upper surface of the wide ridge 43, two mowing machines 21 and 2 are used.
2 and the auxiliary mower 23 are all used. Although not shown in FIGS. 4 (A) to 4 (D), the mowing machines 21 and 22 or the three mowing machines 21 and 22 and 23 are connected straight to cut the slope of the ridge only. It is also possible. Furthermore, three mowers 21
It goes without saying that 22 and 23 can be used in various bent states.

FIGS. 5 to 8 show different embodiments and modifications. In these embodiments, members having the same configuration as the above embodiment will be described in principle with the same reference numerals.

FIG. 5 shows another embodiment, in which an auxiliary frame 45a of another auxiliary mower 45 is connected to the left end of the second frame 22a of the second mower 22. With respect to the two mowers 21 and 22 connected in a straight line, the additional auxiliary mower 45 can be switched to the non-use posture Y. Further, the second mower 22 is bent downward and leftward with respect to the first mower 21, and the other auxiliary mower 45 is used with respect to the second mower 22 in the posture X.
And a non-use posture (not shown here).

FIG. 6 shows still another embodiment, in which the first embodiment
The auxiliary frame 23a of the auxiliary mower 23 is connected to the right end of the first frame 21a of the mower 21 and the auxiliary frame 45a of another auxiliary mower 45 is connected to the left end of the second frame 22a of the second mower 22. Things. The mowing device 2 of FIG. 6 can obtain various bending postures obtained by combining FIG. 3 and FIG.

In the modification shown in FIG. 7, the auxiliary mower 23 connected to the first mower 21 is switched to the non-use posture Y on the rear side. In another modification of FIG. 8, an auxiliary mower 23 is configured to be detachable from the first mower 21. The auxiliary mower 23
Is attached to the first mower 21 when in use, and is detached from the first mower 21 when not in use and stored in another place such as a tractor.

Each of the above embodiments and modifications can be further modified as follows. Two mowers 21 and 22
Can be individually driven by two hydraulic motors instead of being driven by one hydraulic motor 33. The driving means and auxiliary driving means of the cutters 31, 32, 41 are provided by the hydraulic motors 33, 39. Alternatively, another type of actuator such as a gasoline engine may be used. The number of mowers 21 and 22 connected in the horizontal direction may be three or more instead of two.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, and is a view in which a mowing device is viewed from a rear side in a traveling direction of a tractor during mowing work.

FIG. 2 (A) is a view taken along the line AA in FIG. 1 described above. FIG. 2B is a view taken along line BB in FIG. 2A.

FIG. 3 is a diagram illustrating the operation of the above mowing device, and FIG.
It is a figure corresponding to the main part in a middle.

FIG. 4 is a schematic view showing various states of use of the mowing device.

FIG. 5 is a view showing another embodiment of the above mowing apparatus and corresponding to FIG. 3 above.

FIG. 6 is a view showing still another embodiment of the mowing device according to the first embodiment and corresponding to FIG.

FIG. 7 is a schematic plan view showing a modification of the mowing device and corresponding to FIG. 2 described above.

FIG. 8 is a view showing another modified embodiment of the mowing device, and corresponding to FIG. 7 described above.

FIG. 9 shows a conventional example, and is a view corresponding to FIG. 4 described above.

[Explanation of symbols]

1. Work vehicle (tractor), 12. Boom, 21.22 ...
Mower, 23 ... Auxiliary mower, 31/32 ... Cutter,
33: driving means (hydraulic motor), 39: auxiliary driving means (auxiliary hydraulic motor), 41: auxiliary cutter, 45: another auxiliary mowing machine, X: use posture, Y: non-use posture.

Claims (4)

[Claims] 1. A plurality of mowers (21) and (22) arranged in series in a horizontal direction are connected to each other so as to be able to swing up and down and can be positioned at a predetermined swing angle. Each of the cutters (31) and (32) of (21) and (22) is configured to be drivable by a driving means (33). An auxiliary mower (23, 45) is attached to at least one end of the first mower so that the auxiliary mower (23, 45) can be positioned at a predetermined vertical swing angle.
Can be switched between the use posture (X) and the non-use posture (Y), and the auxiliary cutter (4) of the auxiliary mowers (23, 45) can be switched.
A mowing device characterized in that 1) can be driven by auxiliary driving means (39). 2. The mowing device according to claim 1, wherein the auxiliary mower (23) is in a use position (X) and a non-use position.
A mowing device characterized in that the auxiliary mower (23) is detachably mounted on the mowers (21) and (22) instead of being configured to be switchable to (Y). 3. The mowing device according to claim 1, wherein one of the plurality of mowers (21) is mounted on a working boom of a work vehicle (1). 1
2. A mowing device, wherein the mowing device is supported at the tip of 2). 4. The mowing apparatus according to claim 3, wherein said driving means (33) and said auxiliary driving means (39) are constituted by hydraulic motors, and said driving means (33).
A mowing apparatus characterized in that (39) is detachably connected to the hydraulic pump unit of the work vehicle (1).