JP2005237293A - Transmission mechanism for traveling unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transmission mechanism for traveling unit, which prevents defect in mud removal, increase in travel resistance and decline in operability. <P>SOLUTION: The transmission mechanism has the following construction: A traveling unit 4 having a pair of left and right crawlers 10 is set under a machine body frame 1 constructed by combining the transverse frame 2 and the longitudinal frame 3 of the traveling unit of a working implement. The crawlers 10 are put around the respective outer circumferences of guide wheels 7, drive wheels 8 and idling rollers 9 provided on a pair of left and right longitudinal travel frames 6. For the left and right longitudinal travel frames 6, both portions of transverse V-shaped frames 15 with the center positioned above both the left and right portions are fixed via a raising member 18 on the top surface 19 of the travel frame 6. The travel frame 6 is attached to the machine body frame 1 by linking through the pair of longitudinal V-shaped frames 15. For the raising member 18 divided longitudinally, the front side raising member 18A and the rear side arising member 18B are set on the travel frames 6 respectively to fix the V-shaped frames 15. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a traveling device for a working machine such as a combine.

Conventionally, a traveling device having a pair of left and right crawlers is provided below a body frame configured by combining a horizontal frame and a vertical frame, and the crawler includes a guide wheel and a drive 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 whose center portion is located above both left and right side portions.
JP-A-10-329766

In the known example, both ends of the frame are directly fixed to the side surface of the traveling frame, and therefore, mud pushing phenomenon occurs due to the corner K of the fixed portion between the front and rear surfaces of the frame and the side surface of the traveling frame during wet field traveling. As a result, the running resistance increases and the running stability decreases.
In addition, once mud adheres to the corner K (for ease of understanding, the planar position is shown in FIG. 8 but the corner K does not exist in the present application), mud further adheres to the adhered mud. As a result, it becomes a large earth mass and further reduces running stability. Moreover, removal of mud adhering to the vicinity of the corner K is very troublesome because it is a work in a narrow place, and maintenance is difficult.
The present application solves the above-mentioned problems by devising the mounting configuration of the traveling frame and the connecting frame.

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 the crawler 10 is a pair of left and right traveling frames 6 in the front-rear direction. The left and right traveling frames 6 are hung around the outer periphery of the guide wheel 7, the driving wheel 8 and the idle roller 9 provided on the left and right sides of the upper surface 19 of the traveling frame 6, with the center portion above the left and right side portions. The both side portions of the U-shaped frame 15 to be positioned are used as a traveling device for a working machine fixed through a raising member 18, and the power of the prime mover is transmitted to rotate the left and right drive wheels 8 to The driving wheel 8 rotates the crawler 10 to travel the machine body, and during traveling, the U-shaped frame 15 widens the vertical distance from the work scene due to the presence of the raising member 18, and traveling due to the presence of the U-shaped frame 15. resistance Reduce, also, spacing each other side 22 of the left and right track frame 6 even wider stably travel.
In the present invention, the traveling frame 6 is connected to the body frame 1 by being connected by a pair of front and rear U-shaped frames 15, and the raising member 18 includes a front raising member 18A and a rear raising member 18B which are divided into front and rear. Each of the traveling frames 6 is provided with a traveling device for a working machine in which the U-shaped frame 15 is fixed. Between the front raising member 18A and the rear raising member 18B above the upper surface 19 of the traveling frame 6. A space is provided in the area to improve mud drainage.
In the present invention, the idle roller 9 is rotatably attached to an idle roller support member idle roller support member 30 inserted in the rear part of the traveling frame 6 so as to be slidable back and forth, and the rear raising member 18B has a crawler at its front end. 10 is a traveling device of a work machine configured to have a length that is positioned above the tip of the idle roller support member 30 in a state where 10 is stretched to a normal dimension, and the travel frame 6 is interposed via the idle roller support member 30. The rear side raising member 18B supports a load (load) applied to the rear side.

According to the first aspect of the present invention, the distance between the side surfaces 22 of the left and right traveling frames 6 can be widened while increasing the height position of the attachment portion of the U-shaped frame 15, and the mud slipping phenomenon is improved. It is possible to reduce occurrence, reduce mud adhesion, reduce running resistance, improve running stability, and facilitate maintenance work such as removal of adhered mud.
According to the second aspect of the present invention, the space on the inner periphery of the crawler 10 can be widened while increasing the height position of the attachment portion of the U-shaped frame 15 to improve the mud removal.
In the invention of claim 3, the support strength of the rear part of the traveling frame 6 is improved.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 combiner, which is configured by combining a horizontal frame 2 and a vertical frame 3. Is provided.
The traveling device 4 has a plurality of guide wheels 7 mounted on a pair of left and right traveling frames 6 with 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 provided, and a crawler 10 is wound around the outer periphery of the guide wheel 7, the drive wheel 8, and the idle roller 9 provided on the left and right traveling frames 6.
The left and right traveling frames 6 are each formed in a quadrangular cross section, and each traveling frame 6 is connected by an inverted V-shaped U-shaped frame 15 in the left-right direction. The U-shaped frame 15 has a central portion located above both left and right side portions, and a raised member 18 is fixed to the left and right arm portions 17 located on the left and right sides of the central top portion 16, respectively. The lower part of the attachment member 20 is fixed between the fixed part of the left and right arm parts 17 with the raising member 18 and the central top part 16, and the upper part of the attachment member 20 is an arbitrary part of the body frame 1. Secure to.
Therefore, since the left and right traveling frames 6 are connected by the U-shaped frame 15 via the raising member 18, the distance between the side surfaces 22 of the left and right traveling frames 6 can be widened.

That is, as in the known example, when the leading end of the U-shaped frame 15 is directly fixed to the side surface 22 of the traveling frame 6, the interval between the mounting portion with the U-shaped frame 15 is narrowed.
At first glance, this does not seem to be a big deal, but the mud pushing phenomenon is caused by the corner K between the front and rear end surfaces of the U-shaped frame 15 and the side surface 22 of the traveling frame 6 during wet field traveling. Occurs, the running resistance is greatly increased, and the running stability is lowered. Further, once mud adheres to the corner K, the mud further adheres to the adhering mud and becomes a large soil mass, further reducing running stability. Moreover, removal of mud adhering to the vicinity of the corner K is very troublesome because it is a work in a narrow place, and maintenance is difficult.

  However, in the present application, since the U-shaped frame 15 is fixed to the upper surface 19 of the traveling frame 6 via the raising member 18, the side frame 22 of the traveling frame 6 has an attachment portion with the U-shaped frame 15. In addition, the distance between the left and right traveling frames 6 can be widened, and the side surface 22 of the traveling frame 6 can be made substantially flat, reducing the occurrence of mud pushing phenomenon and reducing the adhesion of mud, thus improving the running stability. It not only improves (does not reduce), but also facilitates maintenance work such as removal of adhered mud.

The traveling frame 6 is connected by a pair of front and rear U-shaped frames 15. Therefore, the raising member 18 is divided into front and rear and is constituted by the front raising member 18A and the rear raising member 18B, and the front front raising member 18A and the rear raising member 18B are fixed to the upper surface 19 of the traveling frame 6, Both sides of the front and rear U-shaped frame 15 are fixed to the front side front raising member 18A and the rear side raising member 18B, respectively.
Therefore, the raising member 18 may be provided on the upper surface 19 of the traveling frame 6 below the attachment portion of the U-shaped frame 15, eliminating unnecessary occupied space inside the crawler 10, Moreover, it contributes to weight reduction of the traveling device 4.

Therefore, both the front side raising member 18A and the rear side raising member 18B of the raising member 18 are formed in a so-called trapezoidal shape having a long bottom surface in side view, thereby preventing or reducing mud from accumulating on the upper surface of the raising member 18.
In this case, the idle roller 9 is rotatably attached to the idle roller support member 30, and the idle roller support member 30 is inserted in the rear part of the traveling frame 6 so as to be movable back and forth, and the crawler 10 is properly connected. If the length of the rear roller raising member 18B is positioned above the front end of the idle roller support member 30 in the stretched state, the strength near the attachment portion of the idle roller 9 is improved and deformation is prevented. It is possible and suitable.

The idle roller support member 30 is fixed with a base portion of a stay 31 whose front end is located on the inner side of the traveling frame 6, and a rear portion of a tension adjusting bolt 32 that adjusts the tension of the crawler 10 at the front end of the stay 31. The front portion of the tension adjusting bolt 32 is screwed to a rotation stop plate 33 provided on the upper side surface of the rear raising member 18B.
In this case, a crawler guide mounting stay 29 is fixed to the traveling frame 6 by a bolt nut 28, and a crawler guide 44 is fixed to the crawler guide mounting stay 29 via a mounting member 27. The bolt head 32 a and the rotation stop plate 33 are positioned above the crawler guide mounting stay 29, the mounting member 27, and the crawler guide 44.
Therefore, it is difficult for mud to hit the snap pins and the rotation stopper plate 33. Further, the bolt head 32a of the tension adjusting bolt 32 is not easily mud, and maintenance work can be easily performed. Also, the bolt head 32a is not hit by stones and the bolt head 32a is prevented from being deformed.

In this case, since the tension adjusting bolt 32 is disposed between the idle roller 9 and the rear raised member 18B in a plan view, not only the tension adjusting bolt 32 can be easily adjusted but also the crawler 10 with respect to the idle roller 9. Easy installation work.
Further, mud is less likely to adhere to the tension adjustment bolt 32 disposed between the idle roller 9 and the rear raising member 18B, which is preferable.
Moreover, since the rotation stop plate 33 is attached to the rear raising member 18B, the configuration can be simplified.
That is, since a large load for tensioning the crawler 10 is applied to the tension adjustment bolt 32, the load is similarly applied to the rotation prevention plate 33 to which the tension adjustment bolt 32 is attached. Since 33 is attached, the raising member 18 can also be used as an attachment component of the detent plate 33, and the configuration is simplified.
Further, when traveling on a wetland, mud is drawn toward the inside and outside of the crawler 10, but since the raising member 18 becomes a wall and mud is stopped, mud does not adhere to the tension adjusting bolt 32 and maintenance is performed. Easy.

  Thus, the embodiment shows a combine, where 35 is a threshing device, 36 is a mowing unit, 37 is a grain tank, 38 is a pulling device for the mowing unit 36, and 39 is a control unit. In FIG. 4, 40 is a transmission that transmits rotation to the traveling device 4, 41 is an axle, 42 is a guide wheel 7 shaft, and 43 is an idle roller 9 rotation shaft.

(Operation of Example)
Next, the operation will be described.
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 rotate the crawler 10 to run the machine body, and the grain harvesting work is performed in accordance with the form of the work machine provided on the machine body Etc. are performed.
In this case, when the traveling surface of a working field such as a wet field is soft, the machine body sinks, but the character-shaped frame 15 to connect the traveling frames 6 of the traveling device 4 is connected via the raising member 18. Therefore, the height of the whole U-shaped frame 15 can be increased by the raising member 18, and the running resistance due to the presence of the U-shaped frame 15 is reduced.
Also, since the left and right arm portions 17 of the U-shaped frame 15 are fixed to the raising member 18, the distance between the side surfaces 22 of the left and right traveling frames 6 is determined by the mounting portion of the U-shaped frame 15. It can be widened as much as possible to improve mud drainage.

Further, since the left and right arm portions 17 of the U-shaped frame 15 are fixed to the raising member 18 located on the upper side of the traveling frame 6, the side surface 22 of the traveling frame 6 can be a substantially flat surface without unevenness, and mud pushing This not only reduces the occurrence of phenomena and reduces mud adhesion, thus improving (not reducing) running stability, but also facilitating maintenance work such as removing the adhered mud.
Thus, the U-shaped frame 15 is arranged in a pair of front and rear to connect the traveling frame 6, and for this reason, a front raising member 18 A and a rear raising member 18 B that are divided into front and rear are provided on the upper surface 19 of the traveling frame 6. Since the raising member 18 is configured, the proportion of the raising member 18 in the space between the upper surface 19 of the traveling frame 6 and the crawler 10 is reduced as much as possible.
Therefore, mud drainage is improved and the traveling device 4 is reduced in weight.

Thus, since both the front raising member 18A and the rear raising member 18B of the raising member 18 are formed in a so-called trapezoidal shape having a long bottom surface when viewed from the side, accumulation of mud on the upper surface of the raising member 18 is prevented or reduced. Let
In this case, the idle roller support member 30 to which the idle roller 9 is rotatably attached is inserted into the rear portion of the traveling frame 6 formed in a rectangular tube shape so as to be slidable back and forth, and the rear raising member 18B of the raising member 18 is slidable. Since the front end is configured to be positioned above the tip of the idle roller support member 30 when the crawler 10 is stretched to a predetermined regular dimension, the strength near the mounting portion of the idle roller 9 is improved. To prevent deformation.

The side view of a combine. The front view. FIG. The side view of a traveling apparatus. The top view of an airframe frame, a driving frame, etc. The schematic front view of a guide wheel vicinity. The schematic front view of the idle roller vicinity. The top view which shows the position of the corner | angular part vicinity of the idle roller of this application, and a well-known example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Airframe frame, 2 ... Horizontal frame, 3 ... Vertical frame, 4 ... Traveling device, 6 ... Traveling frame, 7 ... Guide wheel, 8 ... Drive wheel, 9 ... Idle roller, 10 ... Crawler, 15 ... Character type Frame 16, central top portion 17, left and right arms 18, raising member 19, upper surface 20, mounting member 22 side surface 27, mounting member 28 bolt nut 29, stay 30, idle Roller support member, 31 ... stay, 32 ... tension adjusting bolt, 33 ... detent plate, 35 ... threshing device, 36 ... mowing unit, 37 ... Glen tank, 38 ... pulling device, 39 ... control unit, 40 ... mission, 41 ... Axle, 42 ... Shaft, 43 ... Rotating shaft, 44 ... Crawler guide, K ... Corner.

Claims (3)

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 the crawler 10 is provided on a pair of left and right traveling frames 6 in the front-rear direction. The left and right traveling frames 6 are hung around the outer periphery of the wheel 7, the driving wheel 8 and the idle roller 9, so that the left and right traveling frames 6 are in the left-right direction on the upper surface 19 of the traveling frame 6 and the central portion is located above the left and right side portions. A traveling device for a working machine in which both side portions of the character-shaped frame 15 are fixed via a raising member 18. In claim 1, the traveling frame 6 is connected to the body frame 1 by being connected by a pair of front and rear U-shaped frames 15, and the raising member 18 is divided into a front raising member 18A and a rear raising member 18B which are divided forward and backward. A traveling device for a working machine in which the traveling frame 6 is provided and the U-shaped frame 15 is fixed. 3. The idle roller 9 according to claim 2, wherein the idle roller 9 is rotatably attached to an idle roller support member idle roller support member 30 inserted in the rear portion of the traveling frame 6 so as to be slidable back and forth. A traveling device for a working machine configured to have a length located above the tip of the idle roller support member 30 when the crawler 10 is stretched to a normal dimension.

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