JP3981764B2 - Crawler type agricultural machine - Google Patents

Description

  The present invention relates to a configuration of a farm work machine (hereinafter referred to as a riding management machine) having a triangular crawler.

Conventionally, as shown in Japanese Utility Model Publication No. 02-143325, a crawler-type agricultural work machine (an endless track vehicle) that includes an engine, a transmission case, and a driver's seat, and that is connected to the rear of the driver's seat via a lift mechanism so as to be movable up and down )It has been known.
Japanese Utility Model Publication No. 02-143325 JP 59-176168

  Among the farming machines, for example, a riding management machine is used for middle tillage, weeding, etc. while running between crops or running between culverts, so it has a high vehicle height and is equipped with various working machines. Therefore, the balance between the front and rear of the center of gravity is easily changed.

In view of the above problems, the present invention includes an engine (E), a transmission case (7), and a driver seat (8) as in the invention of claim 1, and a lift mechanism ( 34) In the crawler type agricultural working machine in which the working machine (9) is connected to be movable up and down via
The crawler type farm working machine includes a pair of left and right lower sides (11, 11) including a front end roller (1) and a rear end roller (2), and a vehicle inner side than the lower side (11, 11). A pair of left and right upper side portions (13, 13) positioned on the left and right sides of the lower side portion (11) and front and rear ends of the upper side portion (13). (11) and a frontal portal type crawler frame (4) having a front side part (40) and a rear side part (41) connecting the upper side part (13), and
The front end roller (1) and the rear end roller (2) provided on the lower side (11) of the crawler frame (4), and higher than the upper side (13) and of the transmission case (7). The distance between the drive sprocket (6) and the front end roller (1) is the distance between the drive sprocket (6) and the rear end roller (2). The crawler (5) is wound in a triangular shape in a state shorter than the distance, and the transmission case (7) is supported by the upper frame (10) supported by the upper side portions (13, 13), and the seat base (19 ) To support the driver's seat (8) and lower than the upper end of the drive sprocket (6) between the front and rear positions of the drive sprocket (6) and the rear end roller (2). , Working machine (9) Lift arm for lifting (34) That was provided pivot shaft (33) and the crawler-type agricultural machine according to claim.

  In the agricultural machine configured 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 guided and rotated by the front and rear end rollers 1 and 2.

In the first aspect of the invention, the engine (E), the transmission case (7), and the driver's seat (8) are provided, and the work implement (9) is provided behind the driver's seat (8) via a lift mechanism (34). In a crawler type farm work machine connected up and down freely,
The crawler type farm working machine includes a pair of left and right lower sides (11, 11) including a front end roller (1) and a rear end roller (2), and a vehicle inner side than the lower side (11, 11). A pair of left and right upper side portions (13, 13) positioned on the left and right sides of the lower side portion (11) and front and rear ends of the upper side portion (13). (11) and a frontal portal type crawler frame (4) having a front side part (40) and a rear side part (41) connecting the upper side part (13), and
The front end roller (1) and the rear end roller (2) provided on the lower side (11) of the crawler frame (4), and higher than the upper side (13) and of the transmission case (7). The distance between the drive sprocket (6) and the front end roller (1) is the distance between the drive sprocket (6) and the rear end roller (2). Since the crawler (5) is wound in a triangular shape in a state shorter than the distance, the crawler and crops are easily straddled, and the drive sprocket (6) is lower than the upper end of the drive sprocket (6). Since the rotation axis (33) of the lift arm (34) for lifting and lowering the work machine (9) is provided between the front and rear positions of (6) and the rear end wheel (2), the work machine (9) It is possible to travel stably regardless of the movement of the center of gravity of the vehicle as it goes up and down .

  1 to 3, the crawler frame 4 has a pair of left and right independent structures. However, the crawler frame 4 may be integrally connected with a gate-shaped lateral member in a front view. On the lower side portion 11 (horizontal frame portion) of each of the left and right crawler frames 4, a front end roller 1, a rear end roller 2, an intermediate roller 3 and the like are disposed so as to be in contact with each other on substantially the same surface, and rubber. The lower side of the crawler 5 can be spanned. Of these, the rear end roller 2 is slidably inserted in the pipe of the lower side 11 by the slider 12 and moved back and forth by the telescopic cylinder C2 between the lower side 11 and the tension of the crawler 5 is increased. adjust. Further, the upper side 13 of the crawler frame 4 is supported so that the upper surface of the crawler frame 4 has a concave cross section when viewed from the front, and the lower side 14 of the upper frame 10 is fitted to the upper side 13 so as to be slidable back and forth. Reference numerals 40 and 41 denote a front side part and a rear side part (inclined frame part) that connect the lower side part 11 of the crawler frame 4 to the lower end part and fix the upper end part on the inner side of the vehicle body than the drive sprocket 6.

The upper frame 10 has the lower side portion 14 and the upper side portion 15 on both left and right sides, and the left and right upper side portions 15 are connected by a horizontal frame 16 to form an integrated structure.
A vertical frame 17 is provided at the center of the horizontal frame 16 to support the mission case 7, and an engine base 18 is projected from the front to mount the engine E, and a seat base 19 is projected from the rear. Install and support the driver's seat 8.

Further, a step floor 20 for receiving the driver's feet is attached to the upper surface of the upper frame 10. Reference numeral 42 denotes a front side portion of the upper frame 10, and 43 denotes a rear side portion.
In the transmission case 7, the traveling drive shaft 53 protrudes from the left and right sides of the lower end portion, the sprocket shaft 21 is connected to the outer end, and the sprocket shaft 21 is attached to the upper side portion 15 of the upper frame 10 by the bracket 22. Bearing. The drive sprocket 6 is attached to the end of the sprocket shaft 21 on the outer side of the upper frame 10 and is positioned within the area around the crawler 5.

  The transmission case 7 includes a transmission, a steering clutch, and the like. The power input from the engine E through the belt 23 is transmitted to the left and right sprockets 21, and the upper frame 10 is connected via the belt 24 from the middle. It is transmitted to the PTO transmission case 26 of the PTO shaft 25 mounted on the input shaft. 27 is a hydraulic pump.

  On the mission case 7, operating mechanisms such as a clutch lever 28, a transmission lever 29, and a steering lever 30 are provided, and a lift lever 31 is provided on the side of the driver's seat 8. The telescopic cylinders C1 and C2 expand and contract by hydraulic pressure or electric rotation.

  The working machine 9 exemplifies a cultivator having a rotary weeding claw 32, but is attached to a lift arm 34 that rotates up and down around a lift shaft 33 with respect to the rear part of the upper frame 10. The lift cylinder 35 can be moved up and down by expansion and contraction of the hydraulic pressure of the pump 27. Reference numeral 36 denotes a transmission shaft that interlocks between the PTO shaft 25 and the input shaft of the work machine 9. Reference numeral 37 is a ridge, 38 is a groove, and 39 is a crop.

  4 and 5, the difference from the above example is that the crawler frame 4 has a front side portion 40 and a rear side portion 41 that are raised, and the upper frame 10 is directly supported on the upper side portion 13 to be slidable. The upper frame 10 has no distinction between the lower side and the upper side as in the previous example. 6 to 9, the difference from the above example is that the upper side 13 of the crawler frame 4 is positioned on both the left and right sides of the vertical frame 17 of the upper frame 10, and the guide frame 44 is inward from the upper side 13. The guide frame 44 is provided so as to be extendable in the left-right direction along a slide frame 45 formed of a square pipe on the vertical frame 17 side. Further, a frame rail 46 having a U-shaped cross section is provided at the inner end of the slide frame 45, and slide frames 47 on both sides of the upper frame 10 are fitted to the frame rail 46 to slide relative to each other in the front-rear direction. It is possible. The sliding movement between the slide frame 47 and the frame rail 46 is performed by the expansion and contraction of the telescopic cylinder C1.

  As described above, the back and forth sliding between the upper frame 10 and the crawler frame 4 is performed between the slide frame 47 and the frame rail 46. The tread adjustment may be performed manually by moving the left and right crawler frames 4 to the left and right by expansion and contraction between the guide frame 44 and the slide frame 47, but an expansion cylinder is provided between the slide frame 45 and the guide frame 44. It may be provided.

  10 and 11, the difference from the above example is that the upper frame 10 is added to the upper side 13 of the crawler frame 4 by a connecting frame 48. The joint frame 48 has vertical support columns 50 at the front and rear ends of a longitudinal frame 49 in the front-rear direction, and the angle member 51 can be superposed on the lower upper side 13 and fastened with bolts. Further, a lateral slide frame 52 can be attached to the front and rear ends of the joint frame 48 by bolting, and the tread can be adjusted by fitting the slide frame 52 to the front and rear square pipe portions of the upper frame 10. The configuration is as follows.

  The counter chain case 54 having the sprocket shaft 21 of the drive sprocket 6 is mounted between the upper side portion 13 of the crawler frame 4 and the vertical frame 49 in the joint frame 48 on the upper frame 10 side. It is configured to transmit from the left and right drive shafts 53 of the case 7. In FIG. 12, the difference from the above example is that the counter chain case 54 is positioned within the thickness width of the support column 50 and the vertical frame 49 of the joint frame 48. When the ground height of the upper frame 10 is increased by the anchoring frame 48, the counter chain case 54 is less likely to come into contact with the basket 37, crops, etc., and the effective height can be increased.

It is a side view. It is a top view. It is a partial front view. It is a side view which shows another Example. It is the front view. It is a side view which shows another Example. It is a side view which shows the effect | action. FIG. It is the front view. It is a perspective view which shows a part another Example. FIG. It is a rear view which shows another Example.

Explanation of symbols

1 Front End Roller 2 Rear End Roller 3 Intermediate Roller 4 Crawler Frame 5 Crawler 6 Drive Sprocket 7 Mission Case 8 Driver's Seat 9 Work Machine 10 Upper Frame C1 Telescopic Cylinder E Engine

Claims (1)

A crawler type farm work comprising an engine (E), a transmission case (7), and a driver's seat (8), and a working machine (9) connected to the rear of the driver's seat (8) via a lift mechanism (34) so as to be movable up and down. In the machine
The crawler type farm working machine includes a pair of left and right lower sides (11, 11) including a front end roller (1) and a rear end roller (2), and a vehicle inner side than the lower side (11, 11). A pair of left and right upper side portions (13, 13) positioned on the left and right sides of the lower side portion (11) and front and rear ends of the upper side portion (13). (11) and a frontal portal type crawler frame (4) having a front side part (40) and a rear side part (41) connecting the upper side part (13), and
The front end roller (1) and the rear end roller (2) provided on the lower side (11) of the crawler frame (4), and higher than the upper side (13) and of the transmission case (7). The distance between the drive sprocket (6) and the front end roller (1) is the distance between the drive sprocket (6) and the rear end roller (2). The crawler (5) is wound in a triangular shape in a state shorter than the distance, and the transmission case (7) is supported on the upper frame (10) supported by the upper side portions (13, 13). the rear part of (10), between the front and rear positions of the drive sprocket the rear end portion and a lower said driving sprocket than (6) an upper end (6) track roller (2), the working machine (9) Rotating shaft (3) of the lift arm (34) for raising and lowering ) Crawler type agricultural machine crawler support device, characterized in that the provided.

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