JPH079751Y2 - Rudder distance adjusting device for work vehicle - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a rut distance adjusting device for a traveling machine for work such as a combine.

[Problems to be Solved by Prior Art and Invention] Generally, in a traveling machine for work, when this is a combine, for example, when dividing work or ridge work, it is usually located on the side of the cut land. There is a case where the traveling body that runs is stepped on the uncut stem culm or climbs up on the ridge, so that the traveling body on the already cut land side can be moved to the other side,
For example, it is known from JP-A-61-5717. In the case where this is one in which a tubular moving axle is spline-fitted so as to be movable in the left-right direction on an output shaft protruding from the transmission case so as to correspond to the lateral movement of the traveling body, the support of the moving axle is provided. In order to support the movable axle, it is necessary to rotatably support at least two places on the left and right sides via a bearing to a car bearing cylinder that is integrally fixed to a movable cylinder that covers the axle. However, in this case, when the traveling body is moved toward the inside of the aircraft, it is arranged on the output shaft side,
The fixed cylinder that fits inside the movable cylinder contacts the bearing or car bearing cylinder, and the relative overlap movement between the movable cylinder and the fixed cylinder is limited, and the lateral movement stroke of the traveling body must be sacrificed to that extent. There is a problem that it is not possible to obtain a rut distance adjustment which has a margin.

[Means for Solving the Problem] The present invention has been made in view of the above circumstances and was devised for the purpose of providing a rut distance adjusting device for a working vehicle body capable of eliminating these drawbacks. For the work in which the running body axle is configured to be movable left and right by spline-fitting the running body axle to the output shaft extending from the aircraft side so that the running distance can be adjusted between the left and right running bodies. In the traveling machine body, a movable cylinder arranged on the moving axle side is externally fitted to a fixed cylinder provided on the machine body side so as to be movable in the axial direction from the tip end side, and movable so as to overlap the inner peripheral side of the movable cylinder. The moving axle is rotatably supported by a bearing on the inner circumference of the car bearing cylinder integrally fixed to the cylinder, and the outer surface of the car bearing cylinder and the inner peripheral surface of the movable cylinder are separated from each other, so that the running body is Fixed when moved inside the machine It is characterized in that a gap is formed in which the cylinder is loosely fitted from the tip side.

According to the present invention, the lateral movement stroke of the traveling body is not limited by the bearing or the car bearing tube that supports the moving axle side.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a combine traveling machine body, and the traveling machine body 1 includes a pre-processing unit 2 for pre-processing such as cutting stem stalks, a threshing unit 3 for threshing cut stalks, and a discharging unit. The post-processing section 4 for performing post-processing such as shredding of culms, the grain storage section 5 for storing the selected grains, and the like are all conventional. is there.

Reference numerals 6 and 7 are a pair of left and right crawler-type traveling bodies. The traveling body 6 is for the uncut land side and the traveling body 7 is for the already cut land side. It is a fixed type that is integrally assembled to the frame 1a. On the other hand, the traveling body 7 on the side of the cut land (moving side) is configured to be movable left and right by a roller 8a provided at the upper end of the traveling frame 8 rolling on a guide rail 1b provided on the machine body frame 1a. Has been done. Further, a hydraulic cylinder 9 is provided between one side portion of the body frame 1a and an upper end portion of the traveling frame 8, and also the body frame 1a.
A pantograph-type link mechanism 9a is provided between the other side portion 1a and the traveling frame 8, and the traveling body 7 is moved in the left-right direction by the operation of the link mechanism 9a accompanying the expansion and contraction operation of the hydraulic cylinder 9. It is about to move.

Reference numeral 10 denotes a transmission case mounted on the airframe, and the tip of the output shaft 11 extending from the transmission case 10 is a spline shaft 11a. The inner peripheral surface of the first sleeve 12 is spline-fitted A so as to be slidable in the axial direction, and the outer peripheral surface of the first sleeve 12 is regulated by a half of the second sleeve 13 in the axial direction. The spline is fitted in the state B. Further, the outer peripheral surface of the axle 14 having a cylindrical shape on the inner peripheral surface of the other half of the second sleeve 13 is spline-fitted C in a state in which movement in the axial direction is similarly restricted. Power transmission to the axle 14 has three sets of spline fittings
A, B, C through, while the axle 14 to the output shaft 11
The horizontal movement of the first sleeve 12 is configured by a spline fitting A of the first sleeve 12 with respect to the output shaft 11.

Reference numeral 15 denotes a support cylinder integrally fixed to the machine body frame 1a and the transmission case 10 so as to cover the base end of the output shaft 11, and the base end of the fixed cylinder 16 is provided on the outer periphery of the tip of the support cylinder 15. It is fitted. A flexible seal 17 also serving as an oil seal and a steel ring 18 are provided at the overlapping portion between the support cylinder 15 and the fixed cylinder 16. A movable cylinder 19 is fitted on the outer periphery of the fixed cylinder 16 so as to be movable in the left-right direction.
The outer end of the movable cylinder 19 is a car bearing cylinder (bearing holder).
It is integrally fixed to the outer end of 20
Is integrally fixed to the traveling frame 8 via a bracket 21. Moreover, the car bearing cylinder 20 is projected inward toward the inside of the fuselage and overlaps the movable cylinder 19 on the inner peripheral side thereof, but the bearings 22 and 22a are provided at the left and right ends of the inner cylinder surface. The axle 14 is rotatably supported. Further, a cylindrical groove-shaped gap S is formed between the outer peripheral surface of the car bearing cylinder 20 and the inner peripheral surface of the movable cylinder 19, and this gap S is fixed.
It is opposed to the tip end of the with a loose fit. Then, when the traveling body 7 is moved toward the inside of the machine body, the fixed barrel 16 is fitted into the gap S from the tip end side. 24 is the axle
A drive wheel is integrally bolted to 14, and 25 is a crawler.

In the embodiment of the present invention configured as described above, in the case of dividing work or ridge work, the traveling body 7 is moved inward by extending the hydraulic cylinder 9, and both traveling bodies 6, If the rut distance of 7 is reduced, it is possible to avoid the problem that the traveling body 7 tramples uncut grass stems or rides on ridges, and smooth and tidy harvesting work can be performed.
In the case of performing normal work, the traveling body 7 can be moved to the outermost side and the harvesting work can be performed with a wide and stable rut distance.

As described above, according to the present invention, the traveling body 7 can be moved in the left-right direction as necessary to freely adjust the rut distance according to the working condition. However, the traveling body 7 is moved to the inside of the machine body. When the rutted distance is reduced by this, the fixed barrel 16 and the movable barrel 19 are fitted to each other in an overlapping manner. In this case, the fixed barrel 16 includes the movable barrel 19 and the car bearing barrel 20. It will be inserted from the front end side into the gap S formed between Therefore, the traveling stroke of the traveling body 7 depends on the left and right bearings 22, 22a necessary to support the axle 14.
Alternatively, since the car bearing cylinder 20 for supporting the same can be secured for a long time without any limitation, the degree of freedom in adjusting the rut distance is widened.

And in this thing, the movable cylinder 19 provided on the traveling body 7 side protrudes more inward than the inner edge of the crawler 25, and the mud carried by the crawler 25 is received by the movable cylinder 19.
In addition, the fixed cylinder 16 is configured to be fitted into the movable cylinder 19 at a position more inward than the inner edge of the crawler 25, in order to prevent the inclusion of mud in the fitting parts of both cylinders 16 and 19, The rut distance adjustment can be performed smoothly and reliably over a long period of time.

[Advantages] In short, since the present invention is configured as described above, when the traveling body is moved toward the inside of the vehicle to adjust the rutted distance, the fixed cylinder and the movable cylinder overlap each other. At this time, the fixed cylinder is fitted into the gap formed between the movable cylinder and the car bearing cylinder from the tip side. As a result, the travel stroke of the traveling body can be secured largely without being restricted by the bearings and vehicle bearing sleeves required to support the axle, and a sufficient range of rudder distance adjustment can be secured as necessary. It is profitable.

[Brief description of drawings]

1 shows an embodiment of a rut distance adjusting device for a working traveling vehicle according to the present invention, FIG. 1 is an overall perspective view of a combine, FIG. 2 is a schematic perspective view of a frame part, FIG. 3 is an exploded perspective view of a main part of the traveling frame of the moving-side traveling body, FIG. 4 is a vertical sectional view showing a state in which the moving-side traveling body is moved inward, and FIG. 5 is a vertical cross-sectional view showing a state in which the traveling side traveling body is moved outward. It is a figure. In the figure, 1 is a traveling body, 7 is a moving side traveling body, 11 is an output shaft,
14 is an axle, 16 is a fixed cylinder, 19 is a movable cylinder, 20 is a car bearing cylinder, 2
2, 22a are bearings, and S is a gap.

Claims (1)

[Scope of utility model registration request] 1. A traveling body is configured to be movable left and right by spline-fitting an axle of the traveling body to an output shaft extending from the side of the machine body so as to be movable in the left and right directions, and a rut distance between the left and right traveling bodies can be adjusted. In the working traveling machine, the movable cylinder arranged on the moving axle side is externally fitted to the fixed cylinder provided on the machine side so as to be movable in the axial direction from the tip end side, and the inner cylinder side of the movable cylinder is overlapped. The movable axle is rotatably supported on the inner circumference of the car bearing cylinder integrally fixed to the movable cylinder via a bearing, and the outer circumference of the car bearing cylinder and the inner peripheral surface of the movable cylinder are separated from each other. A rut distance adjusting device for a working traveling machine body, wherein a fixed cylinder forms a gap that is loosely fitted from the tip side when the traveling machine is moved to the inside of the machine body.