JP4117454B2 - Crawler traveling device for agricultural machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a crawler traveling device for an agricultural machine such as a mower.
[0002]
[Prior art]
The crawler traveling device is often used as a traveling device for farm work machines, but the crawler rotating inner peripheral surface approaches the ground contact surface, and the ground contact surface sinks below the soft soil surface. And it exists in the low position and is in the state which is easy to entrain straw scraps, grass stems, etc. In particular, in a traveling machine that works on straw and grass, such as a mower, a grass harvester, and a combine, etc., the straw grass is easily entangled in the crawler. The present invention eliminates such defects with a simple configuration.
[0003]
[Means for Solving the Problems]
According to the first aspect of the present invention, a grass cutting device 3 having a pair of left and right blade blades 13 that can be moved up and down at the front portion of the vehicle body 7 and whose front side rotates horizontally oppositely toward the center is provided. The crawler 1 is provided, and a winding prevention guide 2 is formed between the left and right crawlers 1 in the form of a portal tunnel to prevent the grass from being caught in the crawler 1. An extended guide edge 39 formed on both sides and above is provided, and the crawler of the agricultural machine for mowing is characterized in that the discharge port 4 of the mowing processing apparatus 3 is looked close to the front side of the extended guide edge 39. The configuration of the traveling device. The airframe is propelled by the drive rotation of the pair of left and right crawlers 1 and can work on the ground. Straw grass in the space between the left and right crawlers 1 is guided rearward along the trapping prevention guide 2 in the form of a gate-shaped tunnel, and the grass stalk treated by the mowing grass treatment device 3 mounted on the front side is discharged to the outlet. When it is discharged from 4, it is positioned as it is between the winding prevention guides 2 between the left and right crawlers 1 and guided to the rear running trace ground.
[0004]
[0005]
[0006]
[0007]
[0008]
【The invention's effect】
According to the first aspect of the present invention, a grass cutting device 3 having a pair of left and right blade blades 13 that can be moved up and down at the front portion of the vehicle body 7 and whose front side rotates horizontally oppositely toward the center is provided. The crawler 1 is formed in a gate-shaped tunnel shape between the left and right crawlers 1 and a wrapping prevention guide 2 is provided to prevent the grass from being entrapped in the crawler 1. straw grass approaching the rotating inner edge portion is guided to the winding blocking guides 2, by winding only the rotation in the peripheral surface of the crawler 1 is prevented, the rear spacing portion between the left and right crawlers 1 To be guided to. For this reason, it is possible to maintain the smooth and accurate crawler driving traveling by reducing the disengagement and elongation of the crawler 1 in the traveling operation in the field with many straw grasses.
In addition, not only the straw grass is prevented from being directly involved in the rotation inner peripheral surfaces of the left and right crawlers 1 but also the straw grass is prevented from coming into contact with the bottom of the vehicle body. the grass treatment device 3 to the vehicle body 7 front provided by causing performed effectively, in the form of collecting discharge a large amount of grass clippings in enabled, it is possible to smoothly discharge the straw grass.
[0009]
Furthermore, an extended guide edge 39 extended to the left and right sides and above is provided at the front end portion of the entrainment prevention guide 2, and is brought close to the front side of the extended guide edge 39 so that the discharge port 4 of the mowing grass treatment device 3 is viewed. Therefore, even if the mowing grass processing device 3 moves up and down during the operation, the straw grass discharge guide action is accurately performed, and scattering from the seam to the entrainment prevention guide 2 to the outside can be reduced. The guiding action by the entrainment prevention guide 2 can be effectively performed.
[0010]
[0011]
[0012]
[0013]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. A mowing device is mounted as a mowing processing device 3 on the front side of a vehicle body 7 having a pair of left and right crawlers 1. The vehicle body 7 is equipped with an engine 8 at the top and a handle frame 10 for a steering handle 9 at the rear. At the front part of the vehicle body 7, a lift link 12 in the form of a parallel link is provided on the link bracket 11 so as to be movable up and down, and a cutting frame in which two upper and lower blade blades 13 are mounted on the front end of the lift link 12 by a blade shaft 14. 15 is installed. Via the belt 16 from the drive shaft 30 driven by the engine 8, the output shaft 17 on the link bracket 11, the belt 19 between the output shaft 17 and the cutting shaft 18 on the cutting frame 15, etc., the blade shaft 14 is transmitted.
[0014]
The crawler 1 has an endless belt shape, lugs 20 are formed on the outer peripheral surface at regular intervals, and sprocket holes 22 with which the drive sprocket 21 meshes are formed between the lugs 20 along the center of the width of the crawler 1. . Further, a cored bar 23 is embedded between the sprocket holes 22 before and after the crawler 1, and a guide protrusion 24 is formed inside the cored bar 23 so as to protrude from the rotating inner peripheral surface of the crawler 1. Yes. The rotation inner edge 25 of the crawler 1 is formed along the outermost edge of the crawler width located on the outer side from the guide protrusion 24 and the sprocket hole 22 and is mainly composed of a crawler rubber member. .
[0015]
A crawler frame 26 that spans the crawler 1 is provided along the lower left and right sides of the vehicle body 7, a front idler 5 is rotatably mounted on an idler shaft 6 at a front end, and a rear idler is mounted at a rear end. 27 is rotatably mounted on an idler shaft 28. A sprocket 21 is mounted on the upper portion of the rear idler 27 by a sprocket shaft 29, and the sprocket shaft 29 is transmitted and rotated from a drive shaft 30 on the engine 8 side to a gear box 40. 1 is rotated. The sprocket 21 around which the crawler 1 is wound is positioned between the guide protrusions 24 and meshed with the sprocket holes 22. The front idler 5 and the rear idler 27 are configured to support the inner peripheral surface of the crawler rotation as an abduction wheel located outside the guide protrusion 24.
The idler shaft 6 that mounts the front idler 5 of the crawler 1 supports both left and right ends on the front end of the crawler frame 26 via a bearing boss 31, and the bearing boss 31 slides back and forth with respect to the crawler frame 26. The tension of the crawler 1 can be adjusted by being moved back and forth by the adjusting bolt 32.
[0016]
A winding prevention guide 2 is provided in an inner space between the left and right crawlers 1. The entrainment prevention guide 2 is made of a sheet metal, has a gate shape in cross section, is formed in a tunnel cover 36 having a long tunnel shape along the crawler frame 26, and is attached to the vehicle body 7 portion or the crawler frame 26. Rubber guides 34 made of rubber are provided along the left and right side edges of the winding prevention guide 2, and the lower edge of the rubber guide 34 is brought close to the rotation inner edge 25 of the crawler 1 grounding portion. . The lower end edge of the rubber guide 34 is the rotation inner end edge portion 25 of the crawler 1 and may be brought close to the inner peripheral surface of the crawler 1 or may be made close to the lateral side of the outer end face. Moreover, the winding prevention guide 2 can also be made into the structure of a mere sheet metal along the rotation inner edge part 25 or a rod form by the left-right independent structure like FIG. Further, the entire entrainment prevention guide 2 can be made of a rubber material or a synthetic resin material. Therefore, when the entrainment prevention guide 2 is the tunnel cover 36, the entire structure can be made of rubber or synthetic resin, and the structure can be simplified, and the resistance when guiding the straw grass can be reduced.
[0017]
The mowing grass treatment apparatus 3 is covered with a cover 35 and is formed with a discharge port 4 that guides and discharges the grass that has been cut to the center rear side of the cutting width. The discharge port 4 is placed in the space between the winding prevention guides 2 between the left and right crawlers 1. 37 is a gauge wheel provided at the front center part of the grass cutting device 3, and 38 is its caster.
An extension guide edge 39 is formed by extending the front end portion of the wrapping prevention guide 2 of the tunnel cover 36 to the left and right sides and the upper side. The extension guide edge 39 approaches the front side of the extension guide edge 39 and the discharge port 4 of the grass cutting device 3 is disposed. Can be moved up and down freely, so that even if the grass cutting device 3 moves up and down during the operation, the straw grass discharge guide action is accurately performed. Scattering can be reduced, and the guide action by the entrainment prevention guide 2 can be effectively performed. Also, a rubber cover 41 is provided at the joint between the entrainment prevention guide 2 and the grass cutting device 3 so that the rubber cover 41 always blocks the joint even when the discharge port 4 of the grass cutting device 3 moves up and down. So there is less scattering of the grass. The shape of the rubber cover 41 is not limited to the shape shown in FIGS. 1 and 2, and any material may be used as long as it has elasticity and closes the joint portion.
[0018]
While driving the engine 8 and rotating the crawler 1, the blade blade 13 can be rotated to perform the mowing work. The grass cut by the mowing grass treatment device 3 is collected in the cover 35 to the discharge port 4 at the center of the rear portion and discharged between the winding prevention guides 2 between the left and right crawlers 1. Further, the discharged grass is guided rearward between the entrainment prevention guides 2 of the tunnel cover 36 and discharged from the rear end portion to the cutting and traveling site. The grass guided by the entrainment prevention guide 2 cannot enter the grounding portion side of the rotating crawler 1, and is entrained between the inner peripheral surface of the crawler 1 and the idlers 5, 27, etc. Less is. Further, in a form in which a part or all of the entrainment prevention guide 2 is made of an elastic material such as a rubber guide 34 as shown in the figure, it can be brought closer to the rotating surface of the crawler 1, Entrainment can be prevented more effectively.
[0019]
In a working machine provided with a device for cutting a large amount of grass and discharging it to the ground while cutting a large amount of grass like a mowing device on the front side of the crawler 1 body 7, the configuration of the winding prevention guide 2 in the tunnel form 36 as shown in the figure As a result, the straw grass guided between the entrainment prevention guides 2 does not enter the inner peripheral surface of the crawler 1 and does not directly contact the bottom surface of the vehicle body 7. Prevention can be achieved more effectively.
[0020]
4 and 5, the difference from the above example is that the crawler frame 26 is arranged inside the rotation inner edge 25 of the crawler 1 and tunnel covers 36 are provided inside the left and right crawler frames 26. It is a thing. The front front idler 5 is in the form of an inner wheel.
The idler shaft 6 is connected by a gate-shaped bracket 33 in which the portion between the left and right crawler frames 26 is bent in a gate shape, and the ground height interval is maintained high. The idler shaft 28 of the rear idler 27 is separated into left and right parts and is supported by the rear end portion of the crawler frame 26. The idler shaft 28 also has a central portion formed in a gate shape like the front idler shaft 6. You can also.
With this configuration, the space inside the tunnel cover 36 can be widened, and the straw grass discharge guide can be smoothly performed.
[Brief description of the drawings]
FIG. 1 is a plan layout view of the present invention.
FIG. 2 is a side view thereof.
FIG. 3 is a rear view thereof.
FIG. 4 is a perspective view showing another example of the embodiment.
FIG. 5 is a perspective view showing another example of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Crawler 2 Entrainment prevention guide 3 Mowing processing device 4 Discharge port 5 Front idler 6 Idler shaft
7 body
13 blade blade
39 extended guide edge

Claims (1)

A mowing treatment device (3) having a pair of left and right blade blades (13) that can be moved up and down at the front part of the vehicle body (7) and whose front side rotates horizontally oppositely toward the center, and a pair of left and right crawlers ( 1), and a winding prevention guide (2) that is formed in a portal tunnel shape between the left and right crawlers (1) to prevent grass from being caught in the crawler (1). (2) An extended guide edge (39) extended at the left and right sides and above is provided at the front end, and the discharge port (4) of the grass cutting device (3) is brought close to the front side of the extended guide edge (39). A crawler traveling device for a mowing agricultural machine characterized by being peeked .

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