JP2001286213A - Reaper and multipurpose working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To actualize a multipurpose apparatus having a simpler handling, capable of carrying out various kinds of operations in a multipurpose working machine capable of carrying out reaping, movement and loading of sugarcane, etc., and various kinds of other operations. SOLUTION: Selection cylinders 17 and 172 and connection members 16 and 162 for connecting the tips of piston rods 18 and 182 of the selection cylinders 17 and 172 to couplers 14a and 14b are installed at both the longitudinal sides of a swinging arm 2 of a traveling vehicle so that the two couplers 14a and 14 are arranged at both the longitudinal sides. The two couplers 14a and 14b are axially supported on a common spindle 13 at the tip of the swinging arm 2 so that the two couplers 14a and 14b can be individually operated, respectively. Consequently, the two couplers 14a and 14b are each equipped with cutter discs C1 and C2 and a nipping device 3, respectively and independently operated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reaper capable of cutting sugar cane, pasture, weeds, etc., and also capable of moving, stacking, and loading the cut sugar cane on a vehicle, and other various operations capable of various operations. Work equipment.

[0002]

2. Description of the Related Art There are known devices equipped with a traveling vehicle equipped with a cutter for cutting sugar cane from the root, and devices for cutting and cutting a sugar cane into a truck or the like with a horn.

[0003] However, in such a conventional apparatus, the traveling vehicle cannot travel unless the cut sugar cane is cleared, so that human labor is required to clear the cut sugar cane.

The inventor of the present invention pays attention to such a problem, and as a reaper capable of efficiently cutting and clearing sugar cane and loading it into a transport vehicle with one machine, FIG. The structure shown in FIG.
No. 9139.

FIG. 1 is a perspective view showing the whole of the previously proposed reaper. A traveling vehicle 1 is called, for example, a backhoe. Alternatively, a machine called a shovel car or the like may be used. In the present invention, instead of a shovel, a clamper 3 and a cutter unit 4 for cutting the root of sugar cane are attached to the tip of the swing arm 2.

[0006] The traveling vehicle 1 can travel in a field with caterpillars 5 and wheels, and a cab and an engine are mounted on a revolving unit 6. A bracket-shaped boom 9 is connected to a bracket 7 fixed to the front or rear end of the revolving unit 6 via a horizontal boom shaft 8, and the horizontal shaft 8 is connected by a boom cylinder 10. It is rotated up and down around the center.

At the end of the boom 9, a horizontal arm shaft 11 is provided.
The swing arm 2 is rotatably connected via an arm cylinder 12 and is swingably connected back and forth by an arm cylinder 12. The upper end of a coupler 14 is connected to the tip (lower end) of the swing arm 2 via a horizontal shaft 13.

The coupler 14 has a substantially frame shape, and the distal end of a piston rod 18 of a selection cylinder 17 is connected to a horizontal shaft 15 at the other upper end thereof via a coupling member 16. The other end of the support bar 20 pivotally supported by the coupling shaft 19 between the coupling member 16 and the tip of the piston rod 18 is pivotally supported by the swing arm 2 via the horizontal shaft 21.

FIG. 2 is an enlarged perspective view of the vicinity of the holding device 3, the cutter unit 4, and the coupler 14. The coupler 14 is
It has a substantially U-shaped rising portion, and has a shape in which the tip of the swing arm 2 and the tip of the connecting member 16 are sandwiched between the upper ends thereof, and connected by the horizontal shafts 13 and 15. .

The center axis of the support frame 22 of the holding device 3 is fixed to the center of the gear built in the base portion of the coupler 14. The gear meshes with the gear of the output shaft of the hydraulic motor M1 mounted on the coupler 14. Therefore, the support frame 22 can be turned by the hydraulic motor M1 to freely change the direction of the clamper 3.

Further, between the holding horns 3a and 3b and the support frame 22, there are provided opening / closing cylinders 23a of the holding horns,
The cut sugar cane is grasped by the intermediary of 23b, and is moved to a position where it does not hinder the traveling of the traveling vehicle, or is loaded on the transportation vehicle.

A support member 24 of the cutter unit 4 is integrated with the coupler 14 at a position outside the coupler 14 by welding or the like. This cutter support member 24 is composed of two support plates parallel to each other,
6 are connected by a central shaft 27.

A bracket 28 extending substantially at a right angle from the turntable 26 has four parallel links L1, L2, L3, L4 extending substantially parallel to the turntable 26, with axes A1, A2,
Supported by A3 and A4. And each parallel link L
At the end of 1, L2, L3, L4, a cutter base 29
Are supported by shafts B1, B2, B3, and B4. The axes A4 and B4 are hidden behind.

A cutter frame 30 mounted at right angles to a cutter base 29 has two cutter shafts 31,
32 are rotatably supported, and cutter disks C1 and C2 are fixed to their lower ends.

A motor M2 for driving the cutter is mounted on the back wall of the cutter base 29, and a worm driven by the motor M2 is built in the cutter box 33. Is equipped with a worm gear that meshes with the worm. The direction of the teeth of the worm gear is reversed on the cutter shaft 31 side and the 32 side.

Therefore, when the motor M2 rotates, the cutter shafts 31 and 32 rotate in opposite directions, and the cutter disks C1 and C2 rotate in opposite directions.

The compression coil springs P1 and P2 are interposed between the position of the bracket 28 near the rotary disk 26 and the lower parallel links L3 and L4.
When C1, 1 hits a stone or the like, the parallel links L1, L2 are opposed to the elasticity of the compression coil springs P1, P2.
2, the entire cutter mechanism is retracted from L3 and L4, and damage to the cutting edge can be avoided.

Next, the operation of the reaper will be described.
When harvesting sugar cane, first, the root of the sugar cane standing in the field is cut by the cutter unit 4. At this time, a pair of cutter discs C1 and C1
The direction of rotation of 2 is set to inward rotation as indicated by arrow a1,
It can be rotated outward as indicated by an arrow a2.

When cutting sugar cane in this way, in FIG. 1, the piston rod 18 of the selection cylinder 17 is extended, and the coupler 14 is rotated counterclockwise about the horizontal shaft 13. When the piston rod 18 is fully extended, as shown in FIG. 2, the cutter unit 4 descends until it becomes parallel to the ground. And the holding device 3 is a swing arm 2
Evacuate to the inside.

When the motor M2 is operated in this state,
Since the cutter disks C1 and C2 rotate in opposite directions, the cutter disks C1 and C2 are moved to the root of the sugar cane to be cut and cut.

The cutter disks C1 and C2 are moved up and down by the boom cylinder 10 in accordance with the position of the sugar cane root.
1, L2, L3, L4, the cutter support member 24
Side, the cutter disks C1, C2 are always in a state parallel to the ground. As a result, the cutter disk C
1, C2 can be reliably cut at a predetermined position without tilting.

Since the cut sugar cane falls down, the work of cutting the sugar cane cannot be performed unless it is cleared. Therefore, the piston rod 1 of the selection cylinder 17
8 is retracted, and the coupler 14 is rotated clockwise about the horizontal axis 13. When the piston rod 18 is completely retracted, as shown in FIG. 1, the cutter unit 4 retreats to the outside of the swing arm 2, and the clamper 3 faces downward.

In this state, the revolving unit 6 is revolved to move the holder 3 to the position of the sugar cane to be picked up. Then, the boom cylinder 10 is driven to drive the boom 9
Is turned up and down to move the holding device 3 up and down. Further, the open / close cylinders 23a and 23b are driven to lower the holding device 3 in a state where the holding device 3 is opened, and the holding horns 3a and 3b
, Close the sugar cane and grab it.
And move it out of the way for stacking or loading into a transport vehicle.

In this way, when the cut sugar cane is removed without obstruction, the cutter disks C1 and C2 of the cutter unit 4 are lowered to the ground again as shown in FIG. Then, the roots of sugar cane are cut off by the cutter disks C1 and C2.

As described above, a single device can cut the roots of sugar cane, and the cut sugar cane can be picked up by the holding device 3 and moved, stacked, or loaded on a transport vehicle. . Therefore, compared to a conventional device that can only perform mowing or only grasping operation, both operations can be performed by one person, and work efficiency is significantly improved.

[0026]

With such a structure, the two cutter disks C1 and C2 of the cutter unit 4 rotate in opposite directions, so that the sharpness is good, but the weight of the cutter unit 4 is reduced. There is a problem that the size is large and the external size is also large.

[0027] Also, the two shafts 31 and 32 are driven by two shafts 31 and 32.
It is necessary to interpose a complicated mechanism such as parallel links L1, L2, L3, and L4 so that the cutter disks C1 and C2 are both parallel to the ground, resulting in an increase in weight and cost.

Since there are two cutter disks C1 and C2, skill is required to position both at the target position.
Also, a cutter disk C1 for the cutter box 33,
The cutting edge of C2 was hidden, making it difficult to visually confirm the cutting position, which hindered the operation.

The technical problem of the present invention is to focus on such a problem, and to realize a mowing machine in which two cutter disks can be reversed, and which is small and lightweight, the connection structure can be simplified, and the handling operation is simple. Claims 1 to 4
Can be realized by the configuration as described in the above.

However, during the trial operation of the prototype machine having such a configuration, a multi-purpose working machine which is further improved, is easier to handle, and can be extended to various operations other than cutting. Was completed.

[0031]

The technical problem of the present invention is solved by the following means. The reaper according to claim 1 has a cylindrical outer shaft S at the center of the upper cutter disk C1.
The tip (lower end) of the center shaft S2 inserted into the outer shaft S1 is fixed at a right angle to the center of the lower cutter disk C2. And
Drive means for rotating the outer shaft S1 and the center shaft S2 in opposite directions to each other is connected to upper ends of the outer shaft S1 and the center shaft S2 in a state where the cutter disks C1 and C2 are overlapped. In the first aspect, the method of mounting the cutter means and the mounting partner are not particularly limited.

As described above, the cutter disks C1 and C2 are fixed to the lower ends of the outer shaft S1 and the center shaft S2, and the upper ends are connected to the driving means for rotating the cutter disks C1 and C2 in opposite directions. Since the sugarcane is cut off by the directional blade, the sharpness is improved, and the cutting can be performed reliably and smoothly.

Since the two cutter disks C1 and C2 driven in opposite directions by the outer shaft S1 and the center shaft S2 are used, the outer shape is small and lightweight, and the load on the moving operation means is reduced. As a result, an inexpensive traveling vehicle with a small size and small output is sufficient. Further, the connection mechanism between the swing arm and the connector at the tip of the swing arm can be simplified. Because of its small size, the visibility is good and work efficiency is improved.

According to a second aspect of the present invention, a coupler equipped with a cutter for cutting sugar cane or grass and a holding device is connected to a tip of the swing arm via a horizontal shaft, and the connecting device is connected around the horizontal shaft. This is a mower in which the cutter and the holding device can be selectively used by swinging the device.

As described above, since the coupler equipped with the cutter for cutting sugar cane and grass and the clamper is connected to the tip of the swing arm via the horizontal axis, the coupler is connected around the horizontal axis. By swinging the container, the cutter and the holding device can be selectively used. That is, after a cutter is selected to cut sugar cane or grass, the cut sugar cane or the like can be gripped by the holding device, moved to another position, stacked, or loaded on a vehicle.

According to a third aspect of the present invention, there is provided a mowing machine wherein the cutter according to the second aspect is disposed in front of the tip of the swing arm, and the clamper is located inside the tip of the swing arm.

As described above, since the cutter is arranged in front of the tip of the swing arm and the clamper is arranged inside the tip of the swing arm, the cutter is not in the way when cutting sugar cane or the like. And the mowing work can be performed smoothly. Further, during the clamping operation, the cutter is retracted to the front side of the swing arm, so that the cutter does not hinder the clamping operation.

According to a fourth aspect of the present invention, there is provided a mowing machine in which the driving means for reversing the two-layered cutter disks C1 and C2 according to the first aspect is mounted on the coupler according to the second or third aspect. is there.

As described above, the driving means for reversing the two-layered cutter disks C1 and C2 according to the first aspect is attached to the coupler according to the second or third aspect, so that it is small and light. As a result, a traveling vehicle on which the cutter unit is mounted can be operated with a small and inexpensive device, and work can be performed more efficiently.

The objects to be cut by the cutter disks C1 and C2 of the present invention are not limited to sugar cane but may be other plants. Any plant suitable for cutting with the cutter disks C1 and C2 may be used.

A fifth aspect of the present invention relates to a multi-purpose working machine which can be applied to work other than mowing, in which selection cylinders 17 and 172 are provided on both front and rear sides of a swing arm 2 of a traveling vehicle. The two front and rear couplers 14a, 14b are pivotally supported by a common support shaft 13 at the tip of
a and 14b are respectively selected before and after the selection cylinders 17 and 17
2 is a structure that can be operated independently.

As described above, since the front and rear two couplers 14a and 14b are supported by the common support shaft 13 at the tip of the swing arm 2 of the traveling vehicle, the support shaft 13 of the swing arm 2 shown in FIG. The two couplers 14a and 14b can be attached by using the shaft hole as it is, and no major modification is required. In addition, selection cylinders 17 arranged on both front and rear sides of the swing arm 2,
By independently operating 172, the front and rear couplers 14a,
14b can be operated independently.

According to the sixth aspect, the two couplers according to the fifth aspect have a structure in which working devices for different purposes are attached. Therefore, by independently operating the front and rear couplers 14a and 14b, one of the working devices is always retracted, so that the visibility is good. The other working device can be easily operated without any obstacle, just like a normal working device, so that the workability is good. As compared with the structure in which both working devices are swung at the same time as in FIG. 3, the burden on the working devices is reduced.

As described above, the front and rear couplings which can be operated independently are provided at the tip of the swinging arm, and the working equipments for different purposes are respectively attached. Therefore, according to the type of the working equipment to be attached. , Not only reaping work,
It can be widely applied to various types of construction and dismantling of scrap cars.

[0045]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a mower and a multi-purpose working machine according to the present invention. FIG. 3 is a side view showing the connection structure and the cutter unit simplified according to the present invention, and the same reference numerals as those in FIGS. 1 and 2 indicate the same parts. In the drawing, the piston rod 18 of the selection cylinder 17 is retracted, and the coupler 14 is rotated clockwise about the horizontal shaft 13 so that the cutter disks C1 and C2 are retracted to the front upper side.
In a state where it can be used with the device facing downward.

The structure of the clamp 3 and the relationship between the clamp 3 and the coupler 14 are the same as those shown in FIGS. 1 and 2, and the relationship between the coupler 14 and the swing arm 2 is also the same. Can be removed from the swing arm 2 and replaced with a bucket or the like.

In the present invention, the mounting bracket 34 is mounted on the front surface of the coupler 14, and the cutter unit 4C is mounted on the front surface of the mounting bracket 34. The cutter disks C1 and C2 in the present invention are two-layered, and rotate in opposite directions. The casing 35 of the cutter unit 4C has a built-in mechanism for driving the cutter disks C1 and C2 to rotate in the reverse direction.

FIGS. 4 and 5 are views illustrating a mechanism for driving the cutter disks C1 and C2 to rotate in the reverse direction. FIG. 4 shows a state in which the piston rod 18 of the selection cylinder 17 is advanced in FIG. 3 and the coupler 14 is rotated counterclockwise about the horizontal shaft 13 to retract the clamper 3 inside the swing arm 2. FIG. 5 is a sectional view taken along the line AA of FIG. 4, with the cutter disks C1 and C2 kept horizontal.

The outer shaft S1 fixed to the center of the upper cutter disk C1 of the two-layered cutter disks C1 and C2 has a cylindrical shape, through which the central shaft S2 is inserted. The center of the lower cutter disk C2 is fixed to the tip (lower end) of the center shaft S2.

As shown in FIG. 5, the cutter disks C1 and C2 have a cutter blade 36 projecting in the radial direction, and the tip e1 and both side edges e2 and e3 are sharpened like a blade. The number and shape of the cutter blades 36 are not particularly limited.
It is sufficient that the rotating body has a disk shape as a whole and has a cutter function.

The upper end (base end) of the outer shaft S1 is connected to the upward bevel gear G1 in the casing 35 of the cutter unit.
It is fixed in the center of the. The upper end (base end) of the central shaft S2 penetrates through the center of the bevel gear G1 and is fixed to the center of the downward bevel gear G2 in the casing 35 of the cutter unit.

The output shaft of the hydraulic motor M3 is connected to the shaft of the driving bevel gear G3 that meshes with the bevel gears G1 and G2. Therefore, when the drive-side bevel gear G3 rotates, the bevel gears G1 and G2 rotate in opposite directions.

The outside of the outer shaft S1 is covered with a cover cylinder 37 extending from the casing 35. And cover cylinder 3
The upper and lower ends of the outer shaft S1 are supported by bearings built into the upper and lower ends of the shaft 7, and the outer shaft S1 is not exposed.

In FIG. 5, assuming that the upper cutter disc C1 rotates clockwise and the lower cutter disc C2 rotates counterclockwise, the cutting edge e3 of the cutter blade 36 of the upper cutter disc C1 and the lower cutter disc C2 are rotated downward. The cut 39 such as sugar cane is cut between the cutter blade 36 and the cutting edge e2 of the cutter blade 36 of the side cutter disk C2. In this manner, since the cut object 39 is sandwiched between the cutting edges e3 and e2 from both sides like cutting with scissors in a state of being sandwiched from both sides, the cutting can be performed reliably and easily.

A cross-shaped blade plate 38 is fixed to the lower end of the cover cylinder 37 shown in FIG.
1. When C2 rotates, vines and the like are prevented from winding around the shaft.

The use of the mower according to the present invention is suitable for mowing sugar cane, but is not limited to sugar cane, but can also be applied to mowing grass, corn, pasture and other weeds.

It is also suitable for cutting off the canopy head with sugar cane leaves. The tip of the sugar cane is unstable enough to shake due to the wind, so it cannot be cut reliably by a cutter that rotates in one direction. However, when the structure is cut off from both sides as in the present invention, it can be cut reliably and easily.

FIG. 6 is a side view of the multi-purpose working machine. FIG.
The mowing machine shown in FIG. 5 is a dedicated mowing machine, whereas the mowing machine shown in FIG.

In the case of the reaper shown in FIG. 3, since the cutter disks C1 and C2 and the holding device 3 are connected to the common connecting device 14, while one of them is being handled by the selection cylinder 17, the other is also taken together. It will rock and swing. As a result, depending on the content of the work, the other working device is inevitably obstructed. Also, at all times, the cutter disks C1, C2
Since the two working devices such as the holding device 3 and the holding device 3 are swung, power is wasted.

On the other hand, in the case of FIG. 6, two couplers 14a and 14b which can be operated independently are provided, and cutter disks C1 and C2 are connected to the front coupler 14a. The holding device 3 is connected to the connecting device 14b in the foreground.

As described above, the selection cylinder 172 is also provided on the front side of the swing arm 2 so that the two front and rear working devices (the cutter disks C1 and C2 and the holding device 3) can be operated independently.
And a connecting member 162 for connecting the distal end of the piston rod 182 of the selection cylinder 172 and the connector 14b.

Therefore, the couplers 14a, 1a
4b can be provided. The two couplers are supported by a common support shaft 13 at the tip of the swing arm 2. Note that a support bar 202 connects the pivot arm between the tip of the piston rod 182 and the connecting member 162 and the swing arm 2.

As described above, since the selection cylinders 17 and 172 and the couplers 14a and 14b are independently provided on both front and rear sides, when the cutter disks C1 and C2 are used, the piston rods of the selection cylinder 172 on the front side are used. 182 can be withdrawn and the clamp 3 can be left retracted.

Therefore, only the cutter cylinders C1 and C2 can be operated by operating only the front selection cylinder 17 and operating the front coupler 14a. As a result, the holding device 3 does not become a hindrance at all, and the cutter disk C1,
Work with C2 can be performed efficiently.

Further, since the clamper 3 not used is kept in the retracted state, unlike the structure in which the clamper 3 moves together as shown in FIG. And work safely and effortlessly.

In this apparatus, when the clamp 3 is used, the piston rod 18 of the front selection cylinder 17 is used.
, The cutter disks C1 and C2 are always retracted, and thereafter, by the selection cylinder 172 in the foreground,
The sandwiching operation can be performed by operating only the coupler 14b and the sandwicher 3 on the near side.

As described above, one of the couplers 14a or 1
Since only the cutter 4b is operated, only the cutter disks C1, C2 or the holding device 3 swing, and a cylinder having lower power is sufficient than a structure in which both swing and swing at all times as shown in FIG.

FIG. 7 shows an example in which a vertical iron saw C3 is used in place of the horizontal cutter disks C1 and C2. The cutter disks C1 and C2 in FIG. 6 are horizontal to cut standing sugarcane and grass roots. On the other hand, if the horizontal cutter disks C1 and C2 in FIG. 6 are replaced with a vertical iron saw C3 and a vertical iron saw C3 is used, it is suitable for dismantling of a scrap car and the like.

Therefore, when the scrap car is dismantled by the iron saw C3, the iron saw C3 is retracted by the selection cylinder 17 and the selection cylinder 172 is operated to use the clamping device 3 to remove the cut scraps and chips. You can pick it up and put it away, or load it in your car.

FIG. 8 shows an example in which a rock breaker 40 is mounted on the front coupler 14a, and a bucket 41 is mounted on the front coupler 14b. in this case,
Leave the bucket 41 retracted and activate only the front coupler 14a with the selection cylinder 17,
The breaker 40 crushes concrete or the like.

Next, the breaker 4 is selected by the selection cylinder 17.
0 is left retracted, and only the front coupler 14b is operated by the selection cylinder 172, and the crushed concrete pieces are cleared by the bucket 41 or loaded into the car. The connecting member 162 in FIG. 6 is omitted from the bucket 41 side.

As described above, the front and rear couplers 14a, 14b
Various operations can be performed according to the type of the working device attached to the device. And since each working device can be used completely independently, work can be performed easily with the same feeling as a normal dedicated working device.

FIG. 9 is a perspective view of a shaft supporting portion formed by the shaft 13 and front and rear couplers 14a and 14b, and FIG. 10 is a sectional view of the shaft supporting portion formed by the shaft 13. 9 and 10, the front (left) coupler 14a has two connecting plates 141 and 142 arranged in parallel, and the front (right) coupler 14b has two connecting plates 143 and 144. Are arranged in parallel.

The bearings 42 and 43 are integrated with the bearings of the left connecting plates 141 and 142 by welding, and the bearings 43 and 45 are integrated with the bearings of the right connecting plates 143 and 144 by welding. . In other words, the bearings 42 and 43 on the left coupler 14a and the bearings 44 and 45 on the right coupler 14b overlap. The bush 46 is inserted into the upper bearings 42 and 44 in the overlapping state, and the bush 47 is inserted into the lower bearings 45 and 43, respectively.

Then, with the bearing 50 at the tip of the swing arm 2 inserted between the upper and lower bushes 46 and 47, the support shaft 13 is inserted. By inserting 49, the front and rear couplers 14a and 14b are connected to the tip of the swing arm 2 by one support shaft 13.

The mounting board 5 for the left coupler 14a
Attach a working device such as a cutter disk C1, C2 to 1,
A work implement such as the clamp 3 is attached to the attachment board 52 of the right coupler 14b.

[0077]

According to the first aspect, the outer shaft S1 and the center shaft S2 are provided.
The cutter discs C1 and C2 are fixed to the tips of the cutter discs, and the upper ends thereof are connected to driving means for rotating the cutter discs in opposite directions. It can be improved, and can be reliably and smoothly cut.

Further, since the two cutter disks C1 and C2 driven in opposite directions by the outer shaft S1 and the center shaft S2 are used, the outer shape is small and light, and the load on the moving operation means is reduced. As a result, an inexpensive traveling vehicle with a small size and small output is sufficient. Further, the connection mechanism between the swing arm and the connector at the tip of the swing arm can be simplified. Because of its small size, the visibility is good and work efficiency is improved.

According to the second aspect of the present invention, the coupler equipped with a cutter for cutting sugar cane, grass and the like and the clamper is connected to the tip of the swing arm via the horizontal axis. By swinging the coupler to select a cutter and cut sugar cane or grass, etc., select a clamper, grab the cut sugar cane etc. with a clamper, move it to another position, Can be stacked or loaded on a vehicle.

According to the third aspect of the present invention, the cutter is disposed in front of the tip of the swing arm, and the clamp is disposed inside the tip of the swing arm, so that the cutter is obstructed when cutting sugar cane or the like. And the mowing work can be performed smoothly. Further, during the clamping operation, the cutter is retracted to the front side of the swing arm, so that the cutter does not hinder the clamping operation.

According to the fourth aspect, the drive means for reversing the two-layered cutter disks C1 and C2 according to the first aspect is attached to the coupler according to the second or third aspect. A small and lightweight cutter unit can be operated, and as a result, a traveling vehicle to be mounted can be operated with a small and inexpensive device, and work can be performed efficiently.

According to the fifth aspect, since the front and rear two couplers are pivotally supported at the tip of the swing arm of the traveling vehicle by a common support shaft, the two couplers can be attached without requiring a significant modification. Become. Further, by independently operating the selection cylinders on the front and rear sides of the swing arm, the front and rear couplers can be operated independently.

According to the sixth aspect, the two couplers according to the fifth aspect have a structure in which working devices for different purposes are respectively attached. Therefore, by independently operating the front and rear couplers, one of the working devices is always retracted, so that the visibility is good. And the other working device is
Just like a normal working device, it can be operated easily without being disturbed by any object, so that workability is good. As compared with the structure in which both working devices are swung at the same time as in FIG. 3, the burden on the working devices is reduced.

As described above, the front and rear couplings which can be operated independently are provided at the tip of the swing arm, and the working equipments for different applications are respectively attached. Therefore, according to the type of the working equipment to be attached. , Not only reaping work,
It can be widely applied to various types of construction and dismantling of scrap cars.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the whole of a previously proposed reaper.

FIG. 2 is an enlarged perspective view of the vicinity of a holding device, a cutter, and a coupler.

FIG. 3 is a side view showing a simplified connection structure, a cutter and a holding device according to the present invention.

FIG. 4 is a longitudinal sectional view illustrating a mechanism for driving a cutter disk in a reverse rotation according to the present invention;

FIG. 5 is a sectional view taken along the line AA of FIG. 4;

FIG. 6 is a side view of the multi-purpose working machine.

FIG. 7 is a side view of an example in which a vertical iron saw is connected in place of a horizontal cutter disk.

FIG. 8 is a side view of an example in which a breaker and a bucket for rock drilling are connected.

FIG. 9 is a perspective view of a shaft support and front and rear couplers.

FIG. 10 is a cross-sectional view of a shaft support.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling vehicle 2 Oscillating arm 3 Clamping device 3a, 3b Clamping horn 4 Cutter unit 4C Cutter unit 9 Boom 13 Horizontal shaft (support shaft) 14 Coupler 17,172 Selection cylinder 22 Support frame 23a, 23b Opening / closing cylinder 24 Cutter support member Reference Signs List 25 base part 26 turntable 27 center axis 28 bracket L1, L2, L3, L4 parallel link P1, P2 compression coil spring M2 cutter drive motor 29 cutter base 30 cutter frame 31, 32 cutter axis C1, C2 cutter disk S1 outer axis S2 Center shaft 33 Cutter box 34 Mounting bracket 35 Casing 36 Cutter blade 37 Cover cylinder 39 Sugar cane (cutted object) 14a Front coupler 14b Rear coupler C3 Iron saw 40 Breaker 41 Bucket 46, 4 Bush

Claims (6)

[Claims] 1. An end of a cylindrical outer shaft fixed at a right angle to the center of one of the cutter disks, and an end of a central shaft inserted into the outer shaft fixed at a right angle to the center of the other cutter disk. A mowing machine characterized in that drive means for rotating the outer shaft and the middle shaft in opposite directions to each other are connected to the base ends of the outer shaft and the middle shaft in a state where the cutter disks are overlapped. 2. A connector equipped with a cutter for cutting sugar cane and grass and a holding device is connected to a tip of a swing arm via a horizontal axis, and the connector is swung about the horizontal axis. A mowing machine characterized in that a cutter and a clamper can be selectively used by moving the cutter. 3. The mowing machine according to claim 2, wherein the cutter is arranged in front of a tip of the swing arm, and the holding device is arranged inside the tip of the swing arm. 4. The coupling device according to claim 1, wherein a driving means for reversing the two-layered cutter disk as described above is attached to the coupler. Reaper. 5. A selection cylinder is provided on both front and rear sides of a swing arm of a traveling vehicle, and two front and rear couplers are pivotally supported by a common support shaft at the tip of the swing arm. A multi-purpose working machine characterized by a structure that can be operated independently by the front and rear selection cylinders. 6. A multi-purpose working machine, wherein working tools for different uses are attached to the two couplers according to claim 5.