JP3528263B2 - Crawler type farm work machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural machine having a crawler.
Concerning the configuration of a work machine (hereinafter, riding management machine) .

[0002]

2. Description of the Related Art Since a riding management machine performs work such as cultivating and weeding while traveling between crops and between ridges, it has a high vehicle height and various types of work. Since the work machine is attached, it is safe.
It is necessary to set the center of gravity of the vehicle and the left and right crawler positions so that the vehicle can travel in a fixed manner .

[0003]

SUMMARY OF THE INVENTION This invention, crawlers in view of the above problems, as in the invention of claim 1, which have a engine (E) and transmission case (7) and the driver's seat (8)
Type farming machine, the crawler type farming machine
Left and right pair with end wheel (1) and rear wheel (2)
Lower side (11, 11) and this lower side (11, 11)
Located inside the car body and above the mission case
A pair of left and right upper side portions (13, 1) between which (7) is located
3), the lower side (11) and the upper side of the left and right
Standing diagonally from the front at the front and rear ends of (13)
Front side (40) and rear side connecting both (13, 11)
A crawler frame (4) having a part (41)
Together with the lower side part (11) of the crawler frame (4)
The front end rolling wheel (1) and the rear end rolling wheel (2) provided for
Travel drive shaft protruding left and right from the mission case (7)
Drive sprocket that rotates by receiving the drive force of (42)
A crawler (5) is wound in a triangular shape across (6), and further , between the front and rear positions of the drive sprocket (6) and the rear end roller (2), a working machine. (9) The rotating shaft (33) of the lift arm (34) for raising and lowering is provided.
A crawler type agricultural working machine characterized by the above. Further, as in the invention of claim 2, with respect to the frame (10) on the vehicle body side that supports the lift arm (34), the left and right cross members are provided.
The frame member (14,
15) through which the drive sprocket (6) can be extended and retracted with respect to the drive shaft (42).
The crawler-type agricultural work machine according to claim 1 , wherein the treads of the left and right crawlers are configured to be adjustable.

[0004]

In the agricultural working machine constructed as described above, the drive sprocket 6 is rotated by the drive of the engine E through the transmission mechanism in the mission case 7. The crawler 5 wound around the drive sprocket 6 is rotated by being guided by the front and rear end rolling wheels 1 and 2, the intermediate rolling wheel 3 and the like on the running surface.

[0007] In a first aspect of the invention, to have the engine (E) and transmission case (7) and the driver's seat (8)
In the crawler type farm work machine, the crawler type farm work
The machine is equipped with front end rolling wheels (1) and rear end rolling wheels (2)
A pair of left and right lower side parts (11, 11) and this lower side part (1
1, 11) inside the vehicle body and the mission
Case (7) between which a pair of left and right upper side parts (1
3, 13) and the upper and lower sides (11) of the left and right
Standing diagonally in front view at the front and rear ends of the side portion (13)
And the front side (40) connecting both (13, 11) and
Equipped with a crawler frame (4) having a rear side (41)
The crawler frame (4) lower side (1
Front end roller (1) and rear end roller (2) provided for 1)
A running drive projecting left and right from the mission case (7)
A drive sprocket that rotates by receiving the drive force of the drive shaft (42)
Crawler (5) constituted by wound into a triangular shape over between bets (6), further, between the front and rear positions of the said drive sprocket (6) rear end track roller (2), the working Machine (9)
A rotary shaft (33) of a lift arm (34) for raising and lowering is provided.
Since it is an crawler type agricultural machine, characterized in that the, ridges and easily straddle the like crops, also possible to travel regardless stable center of gravity movement of the vehicle due to the elevation of the working machine (9) You can

According to the second aspect of the present invention, the left and right crawler frames (4) are extendable and retractable with respect to the frame (10) on the vehicle body side that supports the lift arm (34).
Provided movably from side to side through the ram members (14, 15)
The drive sprocket (6) and the drive shaft (4
The crawler-type agricultural work machine according to claim 1, wherein the crawler-type agricultural work machine is configured to be expandable / contractible with respect to 2) and the treads of the left and right crawlers are adjustable. Even in such a case, as described above, the vehicle can travel stably regardless of the movement of the center of gravity of the vehicle.

[0007]

1 to 3, a crawler frame 4 is shown.
Is a pair of left and right independent structures. At the lower side 11 of each of the left and right crawler frames 4, the front end rolling wheel 1, the rear end rolling wheel 2, the intermediate rolling wheel 3 and the like are arranged so as to make rolling contact with substantially the same plane, and the lower side of the rubber crawler 5 is Can be passed over. Of these, the rear end roller 2 is slidably inserted into the pipe of the lower side portion 11 by the slider 12 and is moved back and forth by the telescopic cylinder C1 between the rear end portion wheel 2 and the lower side portion 11 so that the tension of the crawler 5 is increased. adjust. The upper side portion 13 and the lower side portion 11 of the crawler frame 4 are rigidly connected to each other at a high vehicle height by the front side portion 40 and the rear side portion 41 at the front and rear ends.

The upper frame 10 is formed integrally by connecting vertical frames 17 in the front-rear direction with horizontal frames 16. Further, between the horizontal frame 16 and the vertical frame 17, the mission case 7 is supported, and the engine base 18 is provided in the front so as to project the engine E,
A seat base 19 is provided on the rear side to support the driver's seat 8. A step floor 20 for receiving the feet of the driver is attached to the upper surface of the upper frame 10.

The upper side portion 13 of the crawler frame 4 is
The vertical frame 17 of the upper frame 10 is positioned on both left and right sides of the vertical frame 17 and the guide frame 1 is moved inward from the upper side portion 13.
4 is projected, and the guide frame 14 is provided so as to be able to extend and contract right and left along the slide frame 15 formed of a square pipe on the vertical frame 17 side. In this way, the guide frame 1
4 and the tread adjusted by moving the left and right crawler frames 4 to the left and right by the expansion and contraction between the slide frame 15 may be performed manually, the telescopic cylinder is provided between the slide frame 1 5 and the guide frame 1 4 You can do it.

In the transmission case 7, the traveling drive shaft 53 is projected to the left and right sides of the lower end, and the sprocket shaft 21 is connected to the outer end of the traveling drive shaft 53.
1 to the upper side 13 of the crawler frame 4 with the bracket 22
Bearing on. The drive sprocket 6 is attached to the end of the sprocket shaft 21 on the outer side of the crawler frame 4 and is positioned within the winding range of the crawler 5.

A transmission case, a steering clutch, and the like are provided in the mission case 7, and the power input from the engine E by the belt 23 is transmitted to the left and right sprockets 21, and the belt 24 is provided from this midway. Upper frame 1
0 PTO transmission case 2 of PTO shaft 25 mounted on
6 is transmitted to the input shaft. 27 is a hydraulic pump. An operation mechanism such as a clutch lever 28, a shift lever 29, and a steering lever 30 is provided on the mission case 7, and a lift lever 31 is provided on the side of the driver's seat 8. The expandable cylinder C1 expands and contracts by hydraulic pressure or electric rotation.

The working machine 9 exemplifies a cultivator having a rotary weeding claw 32.
In addition, as shown in FIGS.
It is attached to a lift arm 34 which is provided between the front and rear positions of the sprocket 6 and the rear end wheel 2 and which vertically rotates about a lift shaft 33. The lift arm 34 is attached to the hydraulic pump 27.
It is possible to move up and down by expanding and contracting the lift cylinder 35 by the hydraulic pressure. 36 is a transmission shaft that interlocks between the PTO shaft 25 and the input shaft of the working machine 9. 37 is a ridge, 38 is a groove, and 39 is a crop.

The front side portion 40 and the rear side portion 41 are
The lower end portion is connected to the lower side portion 11 as high as possible, and the upper end portion is provided obliquely toward the upper side portion 13 located on the inner side of the drive sprocket 6, so that the ridges 37, the crop 39, etc. can be easily straddled. . The position fixing of the extendable guide frame 14 and the slide frame 15 may be performed by inserting and removing the lock pin in the tread adjustment by the manual operation. At the same time, the expansion and contraction between the drive shaft 42 and the sprocket shaft 21 may be expanded and contracted by spline fitting, or may be fixed at a fixed adjustment position by a connecting pin.

4 to 7, the difference from the above example is that
Each crawler frame 4 to the upper frame 10,
The upper frame 10 is rotatably supported around the sprocket shaft 21, and the rotation angle of the upper frame 10 with respect to the chlora frame 4 is adjusted by connecting the extensible cylinder C2 extending and contracting between them. The front and rear balance of the aircraft and the balance on sloping ground will be secured. The sprocket shaft 21
The bracket 22 that bears is attached to an outer frame 43 having a configuration different from that of the crawler frame 4, and the guide frame 14 is provided inside the outer frame 43 in the same manner as in the above example. The tread can be adjusted between the two.

On the outside of the bracket 22, a metal boss 44 that is fitted directly around the sprocket shaft 21 or is rotatably fitted around a boss shaft around the sprocket shaft 21 is provided with the front side. The crawler frame 4 is formed in a triangular shape in a side view by connecting the portion 40 and the rear side portion 41. The telescopic cylinder C2 is provided between the rear portion of the lower side portion 11 and the outer frame 43, and is telescopically extended to adjust the inclination of the upper frame 10 integrated with the outer frame 43 in the front-rear direction.

Therefore, the outer frame 43 is replaced by the vertical frame 1.
Crawler 5
You can adjust the tread of. Moreover, due to the expansion and contraction cylinder C2 between the outer frame 43 and the crawler frame 4,
The posture of the upper frame 10 such as the outer frame 43 and the vertical frame 17 can also be adjusted. At this time, since the crawler frame 4 rotates around the sprocket shaft 21, the change in tension of the crawler 5 is small. The telescopic cylinder C2 is a double-acting type and is telescopically extended by a hydraulic circuit having a switching valve 46 which is switched by the operating lever 45. T is a tank port.

In FIG. 8, the difference from the above example is that the P
To adapt the TO transmission case 26 to the height of the work machine,
The expansion / contraction cylinder C3 is adjusted up and down by hydraulic expansion / contraction. The PTO transmission case 26 is supported via an arm 48 rotatable around a transmission shaft 47 of the belt 24,
The position around the transmission shaft 47 can be adjusted by expanding and contracting the expansion cylinder C3 between itself and the transmission case 7.

By the upper and lower sides of the transmission case 26, the PTO
The bending angle of the universal joint of the transmission shaft 36 between the shaft and the input shaft on the working machine 9 side can be reduced, and smooth transmission can be performed.

[Brief description of drawings]

FIG. 1 is a side view.

FIG. 2 is a plan view.

FIG. 3 is a part of the front view.

4 is a side view of a portion another embodiment.

FIG. 5 is a plan view thereof.

FIG. 6 is a front view of a part thereof.

FIG. 7 is a hydraulic circuit diagram thereof.

FIG. 8 is a side view showing a part of another embodiment.

[Explanation of symbols]

1 Front end wheel 2 rear end wheel 3 intermediate wheels 4 crawler frame 5 crawlers 6 Drive sprocket 7 mission case 8 driver's seat 9 working machine 10 Upper frame 34 Lift Arm E engine

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiro Miyauchi, No. 1, Hachikura, Tobe-cho, Iyo-gun, Ehime Prefecture, Engineering Department, Iseki Agricultural Machinery Co., Ltd. (56) Reference JP-A-57-107964 (JP, A) -78682 (JP, U) Actually open 60-54674 (JP, U) Actually open 63-979 (JP, U) Actually open 1-165786 (JP, U) (58) Fields investigated (Int.Cl . ^7, DB name) A01B 39/06 A01B 39/18 B62D 55/08 - 55/10

Claims (2)

(57) [Claims] To [claim 1] engine (E) and the transmission case (7) and driving the crawler-type farm machine to have a seat (8) Contact
In addition, the crawler type agricultural working machine includes a front end roller (1) and a rear wheel.
A pair of left and right lower side parts (11, 1) equipped with end wheels (2)
1) and the inner side of the vehicle than the lower side (11, 11)
And place the mission case (7) in between.
A pair of left and right upper side parts (13, 13) and the left and right husbands
At the front and rear edges of the lower side (11) and the upper side (13)
Stand up diagonally from the front and connect both (13, 11)
A front side portion (40) and a rear side portion (41)
And a lower frame portion (11) of the crawler frame (4).
The front end roller (1) and the rear end roller (2) and the mission
Drive shaft (42) protruding left and right from the case (7)
It is constructed by winding a crawler (5) in a triangular shape between a crawler (5) and a drive sprocket (6) that rotates by receiving the driving force of
Further , a rotary shaft (33) of a lift arm (34) for raising and lowering the working machine (9) is provided between the front and rear positions of the drive sprocket (6) and the rear end roller (2) . A crawler-type agricultural work machine characterized by the following . 2. The left and right craw ruffs with respect to a vehicle body side frame (10) supporting the lift arm (34).
Frame members (14, 15) for expanding and contracting the rame (4)
And the drive sprocket (6) is extendable and retractable with respect to the drive shaft (42).
The crawler-type agricultural work machine according to claim 1 , wherein the treads of the left and right crawlers are adjustable.