JPH0613033Y2 - Cover cylinder structure of the rut distance adjusting device in the working vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a cover cylinder structure of a rut distance adjusting device in 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 in Japanese Patent Laid-Open No. 61-5717. By the way, in such a system, the power transmission shaft system from the transmission case to the axle is configured to be slidable in the axial direction by spline fitting in order to accommodate the movement of the traveling body. It is necessary to cover the shaft system with a tubular body that is also slidable and expandable. In this case, it is desired to increase the expansion / contraction stroke of the cylindrical body as much as possible to widen the range of adjustment of the rut distance, but the fact is that studies have not been sufficiently made up to now.

[Means for Solving the Problem] In view of the above-mentioned circumstances, the present invention was devised with the object of providing a cover cylinder structure for a rut distance adjusting device in a working traveling vehicle capable of eliminating these drawbacks. In a traveling machine for work in which a traveling body that moves in the left-right direction with respect to the machine body is provided and the rut distance between the left and right traveling machines can be adjusted, the traveling body is removed from the transmission case of the machine body. Formed by a telescopic power transmission shaft system cover cylinder that transmits power to the drive wheels of a vehicle, a fixed cylinder fixed to the machine body, and a movable cylinder provided on the moving traveling body side slidably in the axial direction. The inner end of the movable cylinder is inserted inside the outer end of the side brake case, which is provided in a protruding shape on the side of the transmission case, while the moving traveling body is moving toward the inside, with the rut distance reduced. It is characterized in that it is included.

Further, according to the present invention, the expansion and contraction range of the cover cylinder of the power transmission shaft system can be made as large as possible by entering the side brake case portion.

[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 the culm, the grain storage section 5 for storing the selected grain, and the like are all conventional.

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 of a fixed type 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 an upper end portion of the traveling frame 8 rolling 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 machine body frame 1a and the upper end portion of the traveling frame 8, and a pantograph type link mechanism 9a is provided between the other side portion of the machine body frame 1a and the traveling frame 8. The traveling body 7 is provided so as to move in the left-right direction by the operation of the link mechanism 9a accompanying the expansion and contraction operation of the hydraulic cylinder 9.

Reference numeral 10 denotes a transmission case mounted on the airframe, and a tip end portion of a drive shaft 11 extending from the transmission case 10 is a spline shaft 11a. The outer periphery of the spline shaft 11a is 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 fitting B is performed in this state. 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 while the movement in the axial direction is similarly restricted. Power transmission to the axle 14 is performed via three sets of spline fittings A, B and C, while lateral movement of the axle 14 with respect to the drive shaft 11 causes spline fitting of the first sleeve 12 to the drive shaft 11. It is configured to be performed by the combination A.

Reference numeral 15 denotes a support cylinder integrally fixed to the machine body frame 1a and the transmission case 10 with bolts 15a so as to cover the base end of the drive shaft 11, and a fixed cylinder 16 is provided on the outer periphery of the tip of the support cylinder 15. The base end portion of is fitted. And support tube
A flexible seal 17 also serving as an oil seal and a steel ring 18 are provided at the overlap portion between the outer end of 15 and the inner end of the fixed barrel 16.
, And O− are provided in both the inner and outer recesses of the ring 18.
The ring 18a is fixed. Furthermore, the outer peripheral surface of the movable cylinder 19 has a large diameter at both the inner and outer ends that need to have a seal structure internally, but has a small diameter at the middle part including the position corresponding to the inner end of the crawler and has a small diameter. The intervals are widened.

Further, the inner portion of the movable barrel 19 is fitted on the outer periphery of the fixed barrel 16 so as to be movable in the left-right direction. The outer portion of the movable barrel 19 is screwed onto the outer periphery of the inner portion of the car bearing barrel (bearing holder) 20. They are integrally attached by a fitting 20a. Moreover, the vehicle bearing cylinder 20 is integrally fixed to the traveling frame 8 via the bracket 21, and the inner cylinder surface rotatably supports the axle 14 via the bearing 22. And each cylinder 1
The inside covered by 5, 16, 19, and 20 has the drive shaft 11 and the support cylinder in addition to the oil seal function of the flexible seal 17.
15 and the fixed cylinder 16 and the movable cylinder 19 and between the axle and the car bearing cylinder 20 by means of the sealing action of the oil seal 26, not to mention the transmission case 10 and the outside. Also, an independent lubricating oil chamber is formed to lubricate the above-mentioned spline fitting portion and bearing. Further, 24 is a drive roller wheel integrally fixed to the axle 14 by bolts, and 25 is a crawler.

Further, the support cylinder 15 fixedly supported by the transmission case 10 is adjacent to the lower side of the brake case 28a of the side brake 28 provided on the side portion of the transmission case 10 so that the inner portion thereof overlaps with it. Although it protrudes outwards, the brake case 28a is slightly lower than the upper portion of the support cylinder 15 at a position inside the outer side surface of the brake case 28a (the working arm 28b of the side brake 28 in the embodiment) by D. A lubrication hole 29 is formed at a position that does not interfere with the front side and is inclined upward and upward, and a breather hose 30 is detachably attached to the lubrication hole 29 by a stopper 31. Further, the support cylinder 15 is provided with a horizontally oriented oil detection plug 32 at a position slightly lower than the oil filling hole 29, and a waste oil plug is provided just below the oil detection plug 32.
33 is provided respectively, but the oil detecting plug 32 is removed at the time of oil filling, and the amount of lubricating oil injected from the oil filling hole 29 reaches the position of the oil detecting plug 32 and just leaks from here. Is set so that the proper amount of lubrication is obtained. Further, in this structure, the inner end of the fixed barrel 16 overlaps the brake case 28a, as a matter of course. The brake case 28a is configured so as to enter a position where it overlaps with the outer end of the brake case 28a by an amount E, whereby the movement stroke of the movable cylinder 19 can be secured as wide as possible.

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 freely moved in the left-right direction to adjust the rutted distance according to traveling conditions.
The power transmission shaft system by the axle 14 is covered by a cover cylinder formed by an expandable cylinder formed by a support cylinder 15, a fixed cylinder 16, a movable cylinder 19, and a car bearing cylinder 20. . In this structure, when the traveling body 7 moves inward in order to reduce the rutted distance, the movable cylinder 19 that moves inward in response to this decreases the inner edge of the movable cylinder 19 at the side edge portion of the transmission case 10. Side brake case 28 provided so as to protrude to
The side E of the side a also goes inside E and overlaps the side brake case 28a. As a result, the movement stroke of the cover cylinder can be increased by that amount, which leads to the achievement of a wider movement amount of the traveling body 7. Therefore, it is possible to secure a wide range of movement freely, and it becomes possible to design without restrictions.

Also, this is a crawler on the outer peripheral surface of the movable cylinder 19.
25 The inner edge corresponding part has a small diameter, and the gap with the crawler 25 is secured as wide as possible, so that there is an advantage that the mud of mud carried around by the crawler 25 becomes good. is there.

[Advantages] In short, since the present invention is configured as described above, the moving traveling body side of the cover cylinder body that covers the traveling body side power transmission shaft system that moves to adjust the rut distance is described. The movable cylinder provided at the inside of the movable cylinder can be moved inward to a position where the inner end of the movable cylinder enters the inside of the outer end of the side clutch case projectingly provided on the transmission case and overlaps, and accordingly As a result, it is possible to accommodate a wider range of moving strokes of the traveling body, and it becomes easy to secure a necessary moving stroke.

[Brief description of drawings]

1 shows an embodiment of a cover cylinder structure of a rudder distance adjusting device for a working traveling vehicle according to the present invention. FIG. 1 is an overall perspective view of a combine, and FIG. 2 is a frame portion. FIG. 3 is a schematic perspective view, FIG. 3 is a perspective view of a power take-out portion for a moving-side traveling body, FIG. 4 is a side view of the same, and FIG. 5 is a longitudinal sectional view showing a state in which the moving-side traveling body is moved inward. FIG. 6 is a vertical sectional view showing a state in which the vehicle is moved to the outside, FIG. 7 is a sectional view showing a fixed state of an axle portion, FIG. 8 is a traveling frame of a traveling side traveling body, and FIG. 9 is a development of a transmission case. FIG. In the figure, 1 is a traveling machine body, 7 is a traveling side traveling body, 10 is a transmission case, 11 is a drive shaft, 14 is an axle, 15 is a support cylinder, 16 is a fixed cylinder, 19 is a movable cylinder, and 28 is a side. There is a brake.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor: Yaeki, Araki 667, Ibusaya-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Inside Mitsubishi Agricultural Machinery Co., Ltd. (56) Reference JP 62-261580 (JP, A)

Claims (1)

[Scope of utility model registration request] Claims: 1. A working traveling machine in which a traveling body that moves in the left-right direction with respect to the machine body is provided so that the rut distance between the left and right traveling machines can be adjusted, and the traveling body is driven from a transmission case of the machine body. For forming a cover cylinder of an expandable power transmission shaft system that transmits power to the wheels, to a fixed cylinder fixed to the machine side and a movable cylinder provided on the moving traveling body side so as to be slidable in the axial direction. , The inner end of the movable cylinder is inserted inside the outer end of the side brake case projectingly provided on the side of the transmission case when the moving traveling body is inwardly moved while the rut distance is reduced. A cover cylinder structure for a rut distance adjusting device in a work vehicle.