JP2006027458A - Combine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce vibrations during running of a combine, particularly related to its running device. <P>SOLUTION: A left and a right crawler 10 are installed under a machine body frame 1 and set over on rollers 7, driving wheels 8, and idle rollers 9 installed on a running frame 6, and that ones 7 in pair of a plurality of rollers 7 arranged in the running direction which are located in the specified position are attached to the front and rear ends of a swing arm 11, and the middle part in the front-rear direction of the swing arm 11 is rotatably mounted on the running frame 6 by a shaft 12 so as to form a swinging mechanism X, and on the inside of each crawler 10, projections 14 to be engaged with grooves 13 formed in the middle between the left and right of each roller 7 are formed at certain intervals, and the swinging rollers 7B in pair in front and in the rear and the shaft 12 as the rotating center of the swing arm 11 are positioned on a flat inside surface 15 of the crawler 10 free of core metal between the projections 14 relative to the pitch of the projections 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention particularly relates to a traveling device of a combine.

Conventionally, a traveling device having a pair of left and right crawlers is provided below a fuselage frame configured by combining a substantially horizontal horizontal frame and a vertical frame, and the crawler is provided with a wheel provided on a pair of left and right traveling frames in the front-rear direction. The structure is described in which the left and right traveling frames are connected and fixed by a frame that is located in the left-right direction and the center portion is located above both left and right side portions.
Japanese Patent Laid-Open No. 10-316060

In the known example, all of the plurality of wheels are fixed wheels whose mounting positions are not fixed, and therefore, there is a problem that an excessive load is applied when overloading or loading on a truck.
In addition, when the crawler moves up and down according to the unevenness of the running surface, there is a problem that the crawler guide is excessively loaded and deformed / damaged when an oscillating roller that moves up and down following this up and down is provided. .
Further, since the swinging roller moves up and down, there is a problem that interference such as contact with the steadying roller occurs.
In the present application, the mounting structure of the traveling frame and the connecting frame is devised to solve the above problems.

In the present invention, a traveling device 4 having a pair of left and right crawlers 10 is provided below a body frame 1 configured by combining a horizontal frame 2 and a vertical frame 3, and each of the crawlers 10 is a pair of left and right traveling frames in the front-rear direction. 6 are respectively wound around the outer circumferences of the wheel 7, the drive wheel 8, and the idle roller 9, and the pair of wheels 7 at a predetermined position among the plurality of rollers 7 in the traveling direction are disposed at both front and rear ends of the swing arm 11. Each of the swing arms 11 is attached to the running frame 6 by a shaft 12 so as to be pivotable to form the swing mechanism X. The crawler 10 has an inner surface on the inner side of each wheel 7. A plurality of projections 14 that engage with the concave groove portion 13 are formed at a predetermined interval, and the shaft 12 that is the center of rotation of the pair of front and rear swing wheels 7B and the swing arm 11 has a pitch of the projection 14. On the other hand, between the protrusion 14 and the protrusion 14 The combiner is arranged and configured so as to be positioned on the flat inner surface portion 15 of the crawler 10 without gold. The power of the prime mover is transmitted to rotate the left and right drive wheels 8, and the left and right drive wheels 8 are connected to the crawler 10. Rotate to run the aircraft.
The crawler 10 rotates in a state where the protrusion 14 on the inner surface side of the crawler 10 is engaged with the concave groove portion 13 in the middle of each of the rollers 7, and the swinging roller 7B moves up and down by the crawler 10 up and down due to road surface unevenness. The travel is stabilized by reducing the vertical fluctuation range of the center of gravity position of the aircraft.
In this case, since the contact length of the crawler 10 is long in a large combine, the first wheel 7 and the second wheel 7 are fixed wheels 7A, and the third wheel 7 and the fourth wheel 7 are rocking wheels. 7B is generally used, and in the case of such a wheel arrangement, by arranging the first wheel 7 on the protrusion 14 and the second wheel 7 on the flat inner surface portion 15, respectively. Reduce vibration while driving.
In addition, since the ground contact length of the crawler 10 is shorter in the small and medium combine than in the large combine, the first roller 7 is a fixed roller 7A, and the second roller 7 and the third roller 7 are rocking rollers 7B. However, even in the case of such a rolling wheel arrangement, the first rolling wheel 7 is on the protrusion 14, and the second and third rolling wheels 7 and 7 B are on the flat inner surface 15. With the arrangement, the position of the shaft 12 serving as the rotation center of the swing arm 11 plays the same role as the fixed roller 7A, so that vibration during traveling is reduced.
According to the present invention, the swing arm 11 is formed such that the center portion is high and the front and rear sides are low, and a crawler guide 16 for guiding the crawler 10 is provided below the swing arm 11. The crawler guide 16 is fixedly attached to the swing arm 11 by a pair of front and rear stays 18 standing above the front and rear intermediate portion, and the front and rear stays 18 are reversed in the shape of “C” so that their lower portions face the center. When the crawler 10 is rotated, the crawler guide 16 is engaged with the crawler groove crawler groove 17 formed in the center of the inner surface (back surface) of the crawler 10. The crawler guide 16 is loaded with the full load of the machine body when it is smoothly and reliably rotated and over the heel. The stay 18 supports this load.
In the present invention, the pair of front and rear swing wheels 7B are attached to the travel frame 6 so that the swing arm 11 is pivotally supported by a shaft 12, and the travel frame 6 provided with the shaft 12 is provided. The crawler 10 that is in contact with the road surface is guided by the idle roller 9 toward the front side of the vehicle body traveling direction. The crawler 10 between the idle roller 9 and the drive wheel 8 hangs down by its own weight, and the crawler 10 may swing left and right during the movement. Suppresses left and right runout. During traveling, the swinging roller 7B and the steadying roller 23 are located on the side of the traveling frame 6 in plan view. Therefore, when the swinging roller 7B is moved up by the swinging arm 11, the steadying wheel 23 and Although there is a possibility of contact, the steadying roller 23 is located at a position farthest from the upward trajectory of the swinging roller 7B to prevent contact.
In the present invention, the pivot point of the swing arm 11 is set to the approximate center of gravity position G of the fuselage, so that the approximate center of gravity position G of the fuselage, the pivot point of the swing arm 11, and the anti-spindle wheel. 23 is a combine that is arranged and arranged at substantially the same position, and when the body such as over the heel changes its posture from the forward leaning posture to the backward leaning posture, the swing located at the approximate center of gravity position G of the aircraft. The vertical width (movement allowance) of the driving wheel 7B is reduced.

In the invention of claim 1, vibration during traveling is reduced.
According to the second aspect of the present invention, the load can be supported without deforming the crawler guide 16 even if a load in the front-rear direction or the vertical direction of the machine body is applied to the crawler guide 16.
In the invention of claim 3, the contact between the steadying roller 23 and the swinging roller 7B is prevented.
In the invention of claim 4, the vertical width (movement allowance) of the swinging roller 7B can be reduced, and the swinging roller 7B and the steadying roller 23 can further prevent interference.

An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a machine frame of a work machine such as a combine machine, which is configured by combining a substantially horizontal horizontal frame 2 and a vertical frame 3, and is positioned below the machine frame 1. Is provided with a traveling device 4.
The traveling device 4 has a plurality of rolling wheels 7 mounted on a pair of left and right traveling frames 6 at a predetermined interval in the front and rear, a driving wheel 8 on the front side of the traveling frame 6, and a rear side of the traveling frame 6. An idle roller 9 is disposed, and a crawler 10 is wound around each of the outer periphery of the roller 7, the drive wheel 8, and the idle roller 9 provided on the left and right traveling frames 6.

Thus, among the plurality of rollers 7, the first roller 7 is a fixed roller 7A that does not move up and down, and the second roller 7 and the third roller 7 that follow the fixed roller 7A are a pair of front and rear swing rollers. If the fourth rolling wheel 7 is a fixed rolling wheel 7A next to the rocking wheel 7B on the rear side of the rocking mechanism X configured by 7B, when the machine body is in the forward leaning posture, the swinging wheel 7B is unnecessary. It is preferable because it can prevent movement.
That is, the swinging roller 7B of the swinging mechanism X moves up by the reaction force when a load is applied. Therefore, when it is disposed at the foremost side among the plurality of rollers 7, it is tilted forward immediately after the farm entrance and over the ridge. When the cutting operation is performed in the posture, even if the cutting unit is moved up to the highest position, there is a possibility that the cutting unit that the front swinging wheel 7B of the swinging mechanism X is moved up may be lowered. Since the rocking mechanism X is disposed between the wheels 7A, there is no possibility that the cutting part is lowered.

The swing mechanism X is attached to the traveling frame 6 so that the front and rear middle of the swing arm 11 in the front-rear direction is swingable up and down by a shaft 12. A driving wheel 7B is attached.
In this case, a plurality of projections 14 are formed on the inner surface side of the crawler 10 at predetermined intervals so as to engage with the groove portions 13 in the middle of each of the rollers 7 (FIG. 4). The pair of front and rear swing rollers 7B is provided on the flat inner surface 15 of the crawler 10 without the cored bar between the protrusions 14 and 14 with respect to the pitch of the protrusions 14 (front and rear). The shaft 12 serving as the center of rotation of the swing arm 11 is also disposed on the flat inner surface portion 15 (recessed portion). (FIG. 4).

Therefore, in a large combine, since the contact length of the crawler 10 is long, the first wheel 7 and the second wheel 7 are fixed wheels 7A, and the third wheel 7 and the fourth wheel 7 are rocking wheels 7B. In the case of such an arrangement of the rolling wheels, the first rolling wheel 7 is placed on the protrusion 14 (expressed as a convex portion with respect to the concave portion of the flat inner surface portion 15). By arranging the wheels 7 on the flat inner surface portion 15 (recessed portion), vibration during traveling is reduced.
In addition, since the ground contact length of the crawler 10 is shorter in the small and medium combine than in the large combine, the first roller 7 is a fixed roller 7A, and the second roller 7 and the third roller 7 are rocking rollers 7B. However, in the case of such a wheel arrangement, the first wheel 7 is placed on the protrusion 14 (convex portion), and the second wheel 7 and the swing wheel 7B of the third wheel 7 are connected to the flat inner surface portion 15. By disposing each in the upper (recessed portion), the position of the shaft 12 serving as the rotation center of the swing arm 11 serves the same role as the fixed rolling wheel 7A, so that vibration during traveling is reduced.

Therefore, the swing arm 11 of the swing mechanism X is formed so that the central portion is high and both the front and rear sides are low (FIG. 1), and below the swing arm 11, a crawler guide 16 for guiding the crawler 10 is provided. Provide. The crawler guide 16 is engaged with a crawler groove 17 formed in the center of the inner surface (back surface) of the crawler 10 (FIG. 5), and is formed by a shaft rod member in the front-rear direction. A stay 18 that stands upward is provided at the front and rear intermediate portion of the crawler guide 16, and the upper portion of the stay 18 is fixed to the swing arm 11 by a shaft 19 (FIG. 1).
In this case, the stay 18 is formed by a plate-like member, and the front and rear stays 18 are arranged so as to be inverted in the shape of an inverted “c” so that the lower portions thereof are inclined toward the center.
Although the crawler guide 16 is subjected to the full load on the crawler guide 16 when it is over the heel, etc., the stay 18 that supports the crawler guide 16 is arranged in a reverse “C” shape. Even when a load in the vertical direction is applied, the load can be supported without deforming the crawler guide 16.
The swing arm 11 is composed of a pair of left and right plate members (FIG. 6), a stay 18 is provided between the left and right plate members of the swing arm 11, and the crawler guide 16 is a swing arm. 11 is attached to the lower surface of the swing arm 11 in a substantially close contact state (or side view polymerization), and the crawler guide 16 constitutes a part of the strength member of the swing mechanism X. Strength is improved and rational structure is adopted.

Therefore, on the upper surface side of the traveling frame 6, an anti-sway wheel 23 that suppresses the swing of the crawler 10 is provided (FIG. 1). The steadying roller 23 is provided with a stay 24 on the upper surface of the traveling frame 6, and the steadying roller 23 is attached to the stay 24 by a shaft 25.
In this case, the steadying roller 23 is provided in the vicinity of the rotation fulcrum (shaft 12) of the swing arm 11 of the swing mechanism X (FIG. 1).
For this reason, even when the swinging roller 7B moves up and down, for example, when over the heel, the swinging roller 7B and the steadying roller 23 do not interfere with each other.
That is, since the swinging roller 7B and the steadying roller 23 are located on the side of the traveling frame 6 in a plan view (FIG. 3), when the swinging roller 7B is moved upward by the pivoting of the swinging arm 11, the steadying roller 7B is moved. Although there is a possibility of contact with the wheel 23, the steadying roller 23 is located at a position farthest from the upward trajectory of the swinging roller 7B to prevent contact.

  In this case, the pivot point of the swing arm 11 of the swing mechanism X is set to the approximate center of gravity position G of the airframe (FIG. 1), so that the approximate center of gravity position G of the body and the swing arm 11 are rotated. When the three of the fulcrum and the steadying roller 23 are arranged at substantially the same position, the vertical width (movement allowance) of the oscillating roller 7B located at the approximate center of gravity G of the machine body is reduced, and the oscillating roller 7B is further increased. And the steadying roller 23 can prevent interference.

FIG. 7 shows another embodiment, in which a mounting arm 28 protruding upward is provided at the front and rear intermediate portion of the swing arm 11, and the steadying roller 23 is attached to the tip of the mounting arm 28.
Accordingly, the distance between the steady stop roller 23 and the front and rear swing rollers 7B remains unchanged, and they never come into contact with each other, thereby preventing interference.
Further, the stay 24 for attaching the steadying roller 23 is not necessary. Further, since the steadying roller 23 also moves back and forth corresponding to the up and down of the swinging roller 7B, an action of removing mud adhering to the inside of the crawler 10 by the back and forth movement of the steadying roller 23 can be expected.

In this case, the crawler 10 is hung around before mounting the steadying roller 23 on the mounting arm 28 (the traveling frame 6 in the embodiment of FIG. 1), and then the steadying roller 23 is mounted on the mounting arm 28, or In addition, the swinging roller 11 and the front and rear swinging wheels 7B can be attached together with the swinging arm 11, so that the crawler 10 can be easily attached.
In addition, when the swing arm 11 and the front and rear swing rollers 7B are attached together with the swing arm 11, the mounting work is facilitated by a single shaft 12, and the mounting work is further facilitated.

Thus, a reinforcing member 30 is fixed to the front portions of the left and right traveling frames 6, a base portion of the foil pipe receiving member 31 is fixed to the reinforcing member 30, and the tip of the foil pipe receiving member 31 is fixed to the foil pipe 32. To do. The wheel pipe 32 is provided with a drive shaft for mounting the drive wheel 8, and the base portions of the pair of left and right wheel pipes 32 are fixed to the transmission case 33, respectively.
The left and right traveling frames 6 are connected by a U-shaped frame 34 having an inverted V shape in the left-right direction. The U-shaped frame 34 has a central portion located above the left and right side portions, and the left and right arm portions 36 located on the left and right sides of the central top portion 35 are fixed to the traveling frame 6 side (FIG. 5).
The lower portions of a pair of left and right mounting interposition members 37 are respectively fixed to the upper surface of the left and right arm portions 36 of the U-shaped frame 34, and the upper portions of the respective mounting interposition members 37 are fixed to arbitrary portions of the body frame 1. .
A pair of front and rear U-shaped frames 34 are provided, and the pair of front and rear U-shaped frames 34 are fixed to arbitrary portions of the machine body frame 1 by the mounting interposition members 37, respectively.
In this case, the front and rear U-shaped frames 34 are formed to have substantially the same dimensions and have the same height before and after.
That is, for example, as shown in FIG. 8, the lower surface height H of the central top portion 35 of the front and rear frame 34 is set to be the same.
When the U-shaped frame 34 has different heights in the front and rear, the mud in the bowl-shaped field formed by the higher U-shaped frame 34 is caught by the lower U-shaped frame 34 and mud. The crawler 10 may slip due to a pushing phenomenon, and the crawler 10 may slip. However, the front and rear fold-shaped frames 34 are positioned at substantially the same height, so that no running resistance is generated. In addition, no running resistance occurs regardless of forward and backward travel, so that operability and workability are improved.

  Thus, the frame of the traveling device 4 constitutes the lower frame F by fixing the left and right traveling frames 6 and the front and rear U-shaped frames 34 to each other, and the lower frame F has different heights. Is selectively attached to the lower surface of the body frame 1 (FIG. 9). In the embodiment, a standard type and a high clearance type are prepared so that the specification can be easily changed.

The lower frame F is fixed with a lower member 37A among the mounting interposition members 37 divided vertically, and an upper (airframe side) member 37B is fixed to the lower surface of the body frame 1. An intermediate member 37C is sandwiched and fixed between the lower member 37A and the upper member 37B (FIG. 10). Various intermediate members 37C having different heights are prepared and selectively mounted, and the height of the intermediate member 37C is changed by changing the height of the intermediate member 37C without changing the configurations of the lower frame F and the fuselage frame 1. Change it arbitrarily.
In this case, the wheel pipe receiving member 31 is changed as the height of the attachment member 37 is changed.
That is, even if the vehicle height changes, the height of the traveling frame 6 does not change, so the distance between the traveling frame 6 and the wheel pipe 32 changes, so that the wheel pipe receiving member 31 having a different height is changed. And respond.

Further, it is preferable to provide the vibration-proof rubber body 37D on the intermediate member 37C (FIG. 11) because it can absorb vibration during traveling and the riding feeling is good.
That is, a vibration absorbing mechanism is provided between the lower frame F and the body frame 1, and the riding feeling can be improved while effectively using the space, so that a rational configuration is obtained.

Thus, in the embodiments of FIGS. 12 to 14, the traveling device 4 is configured to be changeable between a standard type provided with only the fixed rolling wheels 7A and a swinging type having the swinging rolling wheels 7B.
The traveling frame 6 includes an upper traveling frame 6A and a lower traveling frame 6B, and the lower traveling frame 6B is configured to be detachable from the upper traveling frame 6A, and is a standard type provided with only fixed rolling wheels 7A. A lower traveling frame 6B (FIG. 13) and a swinging lower traveling frame 6B (FIG. 14) having a swinging wheel 7B are prepared, and the specifications can be changed by exchanging them.
In the embodiment, a space 40 for attaching the lower traveling frame lower traveling frame 6B is provided below the upper traveling frame upper traveling frame 6A, and the lower traveling frame 6B in which the fixed rolling wheel 7A or the swinging rolling wheel 7B is attached to the space 40. And are fixed by a fastening member 41 such as a bolt.
Therefore, it is possible to easily change the specification by attaching and detaching the fastening member 41.

FIG. 15 and subsequent figures show other embodiments relating to the crawler guide 16. The crawler guide 16 is formed in a longitudinal axial shape positioned in the concave groove 13 at the middle of the left and right sides of the wheel 7, and the wheel 7 is formed. The stay 18 is fixed to the crawler guides 16 on both the front and rear sides, and the stay 18 is fixed and attached to the traveling frame 6.
Standing portions 45 are provided at both front and rear ends of the crawler guide 16, and a scraper 46 is attached to the standing portions 45. The scraper 46 is provided with a substantially horizontal horizontal axis mounting portion 47 at the front and rear, and the mounting portion 47 is mounted on the upright portion 45. A pair of left and right front vertical axis portions 48 and a rear vertical axis portion 49 are connected to the left and right ends of the mounting portion 47, respectively. A front sliding contact portion 50 is provided below the left and right front vertical axis portions 48, and a rear sliding contact portion 51 is provided below the left and right rear vertical axis portions 49. The front sliding contact portion 50 is inclined so as to be located on the rear side as it reaches the outer side in plan view, and the rear sliding contact portion 51 is inclined so that it is located on the front side as it reaches the outer side in plan view. The rear sliding contact portions 51 are each formed in a “<” shape. The left and right ends of each front side sliding contact portion 50 and the left and right ends of each rear side sliding contact portion 51 are connected by connecting members 52 in the front-rear direction.
When the machine moves forward, the scraper 46 discharges mud adhering (deposited) to the upper surface of the lower crawler 10 by the front sliding contact portion 50 formed in a “<” shape, and similarly, The side sliding contact portion 51 discharges mud when the aircraft is moving backward.

The front slidable contact portion 50, the rear slidable contact portion 51, and the connecting member 52 are provided so as to be positioned above the upper surface of the lower crawler 10 at a predetermined interval (FIG. 19).
Therefore, when traveling on a horizontal road surface such as when traveling on the road, a certain clearance is secured between the inner surface of the crawler 10 and the scraper 46, preventing mutual interference and preventing wear and deformation.

  In this case, since the scraper 46 is attached to the upright portion 45 of the crawler guide 16, a special attachment is not required and a rational configuration is obtained.

The lower portions of the front vertical axis portion 48 and the rear vertical axis portion 49 of the scraper 46 are provided so as to be positioned outside the protrusions 14 forming the crawler grooves 17 on the inner surface of the crawler 10.
Therefore, the scraper 46 and the crawler 10 are prevented from interfering with each other.

  FIG. 21 shows another embodiment relating to the scraper 46. The front and rear attachment portions 47 of the scraper 46 are attached to the standing portion 45 of the crawler guide 16 by the attachment shaft 55 so as to be freely rotatable. The left and right sides of the scraper 46 are moved up and down following the left and right sides of the crawler 10 that moves up and down. Prevent damage and deformation. Further, the scraper 46 and the inner surface of the crawler 10 have a predetermined gap. However, when the left and right ends of the scraper 46 move up and down, the scraper 46 comes into contact with the inner surface of the crawler 10 to improve mud discharge. .

FIGS. 22 and 23 show another embodiment relating to the scraper 46. The front and rear attachment portions 47 of the scraper 46 are attached to the standing portion 45 of the crawler guide 16 by a mounting shaft 55 so as to be rotatable. An urging mechanism 56 is provided at the attachment portion of the shaft 55 so that the gap between the scraper 46 and the inner surface of the crawler 10 in the left-right direction is constant.
The urging mechanism 56 always keeps the scraper 46 at a predetermined position with respect to the crawler 10 to prevent the scraper 46 from being abruptly worn. Further, when the scraper 46 is discharged from the mud, the scraper 46 is elastically brought into contact with the mud until the scraper 46 is completely discharged.
That is, the urging mechanism 56 does not bring the scraper 46 into contact with the crawler 10, but makes contact with mud, thereby preventing mud discharge and extreme wear.

  The configuration of the urging mechanism 56 is arbitrary, but the spring 60 is inserted and attached to the mounting shaft 55 so that one end 61 and the other end 62 of the spring 60 are urged in opposite directions, and the one end 61 and the other end The engaging pin 63 provided on the mounting portion 47 of the scraper 46 and the engaging pin 64 provided on the standing portion 45 are engaged between 62. When the scraper 46 tilts to the left and right, the engaging pin 63 moves toward the tilting direction with respect to the engaging pin 64, and rotates one of the one end 61 and the other end 62. The scraper 46 is held in a horizontal state by the elasticity of returning to the base.

The side view of a traveling apparatus. FIG. The same part enlarged plan view. The side view of a crawler and a wheel. The rear view of a traveling apparatus. The top view of a rocking | fluctuation mechanism part. The side view of another Example. The side view of the Example which provided the U-shaped frame in the same height. The perspective view of a driving | running | working frame and a body frame. The perspective view of the other Example. The perspective view of the Example which provided the vibration isolator rubber. The side view of the other Example regarding a driving | running | working flame | frame. The side view of the Example which attached the fixed roller. The side view of the Example which attached the same rocking wheel. The top view of the Example which provided the scraper. The same side view. FIG. FIG. The front view. FIG. The operation state figure of the Example of the scraper which rotates right and left. The partial front view of the other Example of the scraper which rotates right and left. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Airframe frame, 2 ... Horizontal frame, 3 ... Vertical frame, 4 ... Traveling apparatus, 6 ... Traveling frame, 7 ... Rolling wheel, 8 ... Driving wheel, 9 ... Idle roller, 10 ... Crawler, 11 ... Swing arm, DESCRIPTION OF SYMBOLS 12 ... Shaft, 13 ... Concave groove part, 14 ... Protrusion, 15 ... Flat inner surface part, 16 ... Crawler guide, 17 ... Crawler groove, 18 ... Stay for crawler guide, 19 ... Shaft, 23 ... Stabilizing roller, 24 ... Stay, 25 ... shaft, 28 ... mounting arm, 30 ... reinforcing member, 31 ... foil pipe receiving member, 32 ... foil pipe, 33 ... mission case, 34 ... frame, 35 ... central top, 36 ... left and right arms , 37 ... mounting interposition member, 40 ... space, 45 ... standing part, 46 ... scraper, 47 ... mounting part, 48 ... front vertical axis part, 49 ... rear vertical axis part, 50 ... front sliding contact part, 51 ... rear side sliding contact part, 52 ... connecting member, 55 ... With shaft, 56 ... biasing mechanism, 60 ... spring, 61 ... end, 62 ... the other end, 63 ... engaging pin 64 ... engaging pin.

Claims (4)

A traveling device 4 having a pair of left and right crawlers 10 is provided below a body frame 1 configured by combining a horizontal frame 2 and a vertical frame 3, and each crawler 10 is provided on a pair of left and right traveling frames 6 in the front-rear direction. The rollers 7, the driving wheels 8, and the idle rollers 9 are respectively wound around the outer periphery, and a pair of the rollers 7 at predetermined positions among the plurality of rollers 7 in the traveling direction are respectively attached to the front and rear ends of the swing arm 11. An intermediate portion of the swing arm 11 is pivotally attached to the traveling frame 6 by a shaft 12 to constitute a swing mechanism X, and a concave groove portion in the middle of the left and right of each roller 7 is formed on the inner surface side of the crawler 10. A plurality of protrusions 14 that engage with the protrusion 13 are formed at predetermined intervals, and the shaft 12 that is the center of rotation of the pair of front and rear rocking wheels 7B and the rocking arm 11 has a protrusion 14 with respect to the pitch of the protrusion 14. There is no core between the projection 14 Combine arranged configured to be located on the flat inner surface 15 of the roller 10. 2. The swing arm 11 according to claim 1, wherein the swing arm 11 is formed so that a central portion is high and both front and rear sides are low, and a crawler guide 16 for guiding the crawler 10 is provided below the swing arm 11, and the crawler guide 16 is provided. Is fixedly attached to the swing arm 11 by a pair of front and rear stays 18 standing above the front and rear intermediate portion of the crawler guide 16, and the front and rear stays 18 are reversed “c” so that their lower portions face the center. Combines arranged in a letter shape. 3. The pair of front and rear swing wheels 7B according to claim 1 or 2, wherein the swing arm 11 is attached to the travel frame 6 with the shaft 12 serving as a rotation fulcrum, and the shaft 12 is provided. Further, the combine is provided with an anti-sway roller 23 for suppressing the swing of the crawler 10 on the upper surface side of the traveling frame 6. In claim 3, the pivot point of the swing arm 11 is set to a substantially center of gravity position G of the machine body, so that the approximate center of gravity position G of the machine body, the pivot point of the swing arm 11 and the steady-state rotation are supported. A combine in which the three members with the wheel 23 are arranged and arranged at substantially the same position.

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