JPH065975Y2 - Traveling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a traveling device, and can be used for a traveling device of an agricultural work vehicle such as a combine harvester.

[Prior art]

Conventionally, in general, in a traveling device of this type, for example, when this is a combine, in the case of splitting work or ridge work, etc., or trampling the uncut stem culm by a traveling crawler that is on the side of the cut land in normal work, In order to avoid riding on a ridge, a traveling crawler on the cut land side can be moved in parallel to the other traveling crawler side, for example, as disclosed in JP-A-61-2913.

[Problems to be solved by the device]

However, in such a conventional traveling device, the outer end portion of the slide frame integrated with the frame supporting the traveling crawler is configured to support the body frame in a state of being extended to a position above the traveling crawler. Therefore, when the weight of the machine body is applied to the support frame, a bending load acts on the frame slide portion, which makes it impossible to perform a smooth slide operation.

The present invention has taken the following technical means for the purpose of solving such problems.

[Means for Solving the Problems]

That is, according to the technical means of the present invention, the vehicle frame 17 for supporting the vehicle body is provided on the left and right traveling frames 21 to which the traveling crawler 2 is attached, and the traveling frame 21 is configured to be movable left and right with respect to the vehicle frame 17. In the apparatus, slide portions 9a and 10a for accommodating the slide frame 12a are provided below the horizontal frames 9 and 10 horizontally provided in the body frame 17, and one of the slide portions 12a is provided below the slide frame 12a. The support frame 15 for supporting the crawler 2 is attached to the slide frame 12
The outer extending end of a is configured to support the body frame 17 above the crawler 2, and the drive wheel 19 is bearing on the outer periphery of the wheel pipe 34 fixed to the transmission case 5 side and containing the wheel shaft 29. Movable bearing cylinder 4 to hold
It is characterized in that 0 is fitted and held so as to be movable in the left-right direction.

[Action]

The slide frame 12 is housed in the slide portions 9a and 10a in the lateral frames 9 and 10 of the machine body frame 17,
Slide left and right.

The support frame 15 connects the slide frame 12a and the traveling frame 21 of the traveling crawler 2 and transmits the load applied to the slide frame 12a to the traveling crawler 2. The slide frame 12a extends outside the support frame 15 and is located above the traveling crawler 2. With such a configuration, the weight of the machine body is added to the crawler 2 from directly above the traveling crawler 2.

Further, the drive wheel 19 for the traveling crawler and the movable bearing cylinder 40 that holds the drive wheel 19 as a bearing are provided on the fixed side wheel pipe 34.
It slides to the left and right while being fitted and held on the outer periphery of the.

[Effect of device]

Since the present invention is configured and operates as described above, the load applied to the body frame is applied from above the traveling crawler via the slide frame and the support frame, so that the bending load is applied to the slide frame of the movable traveling crawler. Therefore, the slide frame can slide smoothly in the horizontal frame.

Since the weight from the machine side and the reaction force from the traveling crawler side act on substantially the same line of action, the load applied to the slide frame and the support frame becomes small, and it is possible to prevent the crawler side frame from becoming excessively large.

The movable bearing cylinder that holds the drive wheel for the traveling crawler is externally fitted and held on the outer circumference of the fixed wheel pipe.Because the diameter on the movable side is large, the bending load is large. Therefore, it is possible to maintain a sufficient strength against, to obtain a stable support structure, and to achieve smooth slide.

〔Example〕

In the illustrated example, the traveling device 1 has a pair of lateral so-called lip groove type steel cross sections in the front-rear direction with respect to the fixed frame member 8 in the front-rear direction in which the fixed side crawler support device 3 is mounted by the support frame 7. The horizontal frames 9 and 10 are provided with their cross-section openings facing downward, and a connecting frame 11 that connects the projecting end sides of the horizontal frames 9 and 10 from the upper side to the front-rear direction c is formed into a rectangular frame to form a rectangular slide. The front and rear lateral members 12a, 12a of the frame 12 each having a plurality of rotatable rollers 13 disposed therein are fitted into the front and rear lateral frames 9, 10 to sandwich the opening.
Is used as the rail of the roller 13 and the slide frame 12a
And the movable crawler support device 4 is connected and fixed to a support frame 15 projecting downward from the slide frame 12a through the openings of the front and rear horizontal frames 9 and 10. A machine body frame 17 (mounting table) for mounting a mounted object is formed and provided on the upper part thereof. Also, slide frame 1
2 and the fixed frame member 8 of the traveling device 1 between the hydraulic cylinder 1
6 and 16 are stretched. By extending the outer end portion 12e of the slide frame 12a to a position above the crawler 2, the weight of the machine body is added to the crawler 2 from directly above the traveling crawler 2.

The crawler 2 is an endless rubber crawler, a lug 18 is provided on the outer peripheral surface, and a meshing body 20 for meshing with a drive wheel 19 for driving and rotating the crawler 2 is provided on the inner surface inward of the center of the crawler width (d). They are arranged in series along the direction of rotation.

The crawler support devices 3 and 4 are provided with a plurality of (four in the illustrated example) hourglass-shaped rolling wheels 22 at appropriate intervals in the front-rear direction (C) of the traveling frame 21 which is formed by a rectangular tube and extends in the front-rear direction (C). A rear wheel 24 is rotatably pivotally mounted, and a rear wheel 24 is pivotally mounted on an arm 23 which can be fitted into the traveling frame 21 and is adjustable in and out, at a rear end portion thereof.
This is a structure in which the crawler 2 is tensioned and the crawler 2 is wound. The crawler support device 3 having this configuration is configured such that the traveling frame 21 includes the pair of front and rear support frames 7 of the traveling device 1.
The crawler support device 4 has the traveling frame 21 connected and fixed to the support frame 15 of the slide frame 12a.

The traveling transmission case 5 is a transmission case 5 in which a transmission mechanism having a speed change gear, a clutch and the like for transmitting the power from the prime mover to the transmission shaft 6 is installed. The traveling transmission case 5 is attached to the front edge portion 25 of the machine body frame 17, and is mounted on the fixed side. To the crawler support device 3 side, a drive wheel 19 is provided at the end of the transmission shaft fitted with the wheel pipe 26 to drive the crawler 2, and the wheel pipe 26 is supported by the traveling frame 21 by the support legs 27. Also,
On the other side, a transmission shaft 6 that projects to the sliding crawler support device 4 is provided.

The transmission shaft 6 is provided with a gap between the wheel shaft 29 supported by the gear 28 at the final transmission stage in the transmission case 5 and the outer peripheral surface of the wheel shaft 29, and a screw 30 is provided at the end of the wheel shaft 29.
And an outer cylinder shaft 33 in which a spline 32 is provided on the outer peripheral surface of a cylinder having a boss portion 31 screwed in with, and an inner end is fixedly supported on the transmission case 5 side within the space. The wheel pipe 34 is provided with a bearing 35 to rotatably support the wheel shaft 29 and a bearing 36 to rotatably support the outer cylinder shaft 33. The wheel shaft 29, which is projected long, is reinforced and supported.

On the spline 32 of the outer cylinder shaft 33 of the transmission shaft 6, a boss portion 37 of the driving wheel 19 having an inner hole provided with a spline to be fitted from the outside is provided in a wide width.
A leg portion of a movable bearing tubular body 40 having a housing portion 39 for receiving 7 from the outside by a bearing 38 is fixed to the front end portion of the traveling frame 21 of the crawler support device 4 to support the transmission shaft 6 as well. The movable bearing cylinder 40 and the drive wheel 19 are provided with stop rings 41 and 42 on the left and right sides of the bearing 38 to prevent the movable bearing cylinder 40 from coming off, and the drive wheel 19 is integrated with the movement of the movable bearing cylinder 40. It is configured to move left and right while rotating together.

As shown in FIG. 4, at the innermost position (a) of the sliding range of the crawler support device 4, the outer end of the transmission shaft 6 is provided in such a length as to be located along the outer surface (b) of the crawler 2. .

The left and right drive wheels 19 and 19 of the respective crawler supporting devices 3 and 4 are connected to the left and right drive wheels 19 and 19 via a wheel shaft 29 and an outer cylinder shaft 33 from a transmission case 5 appropriately transmitted from a prime mover mounted on a machine body frame 17 on the traveling device 1. When the traveling device 1 moves forward by rotating the crawler 2 and the hydraulic cylinders 16 and 16 are extended by the hydraulic circuit, the crawler support device 4 moves laterally. At this time, by the sliding movement of the traveling frame 21 of the crawler support device 4 having the rolling wheels 22,
The movable bearing cylinder 40 moves laterally outward along with the drive wheel 19 while rotating the drive wheel 19, and the crawler support device 4 moves laterally while drivingly rotating the crawler 2 to move it to the left and right crawlers. Increase the distance between the support devices 3 and 4,
It is possible to change the weight balance in the left-right direction of the mounted object on the machine body frame 17 by stopping the slide at the position where the extension of each hydraulic cylinder 16 is stopped. Also, the hydraulic cylinder 16,
Even if 16 is contracted to move the crawler support device 4 to the innermost position (a) in the sliding range, the end of the transmission shaft 6 is transmitted along the outer surface (b) of the crawler 2 without protruding beyond this. The safety can be maintained without the shaft 6 hitting the ridge and the foot of a person. Further, as shown in the figure, by arranging the rollers 13 on the slide frame 12a and rolling them in the front and rear lateral frames 9 and 10 of the traveling device 1, it is lighter than the case of sliding by sliding on the sliding contact surface. The hydraulic cylinders 16 can slide with ease under load.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a plan view, FIG. 2 is a front view thereof, FIG. A sectional view and FIG. 5 are partial plan views thereof. In the drawing, reference numeral 1 is a traveling device, 2 is a crawler, 3 is a crawler supporting device, 4 is a crawler supporting device, 5 is a transmission case, and 6
Is a transmission shaft, 9 and 10 are horizontal frames, 12 is a slide frame, 13 is a roller, 15 is a support frame, 16 is a hydraulic cylinder, 17 is a machine frame, 21 is a traveling frame,
29 is a wheel shaft, 33 is an outer cylinder shaft, 34 is a wheel pipe,
Reference numeral 40 denotes a movable bearing cylinder.

Claims (1)

[Scope of utility model registration request] 1. A traveling device in which a machine frame 17 for supporting a machine body is provided on left and right traveling frames 21 to which the traveling crawler 2 is attached, and the traveling frame 21 is movable left and right with respect to the machine frame 17. Slide portions 9a and 10a for accommodating the slide frame 12a are provided below the horizontal frames 9 and 10 horizontally provided in 17 and one crawler 2 is supported below the slide frame 12a. The support frame 15 is attached, and the outwardly extending end of the slide frame 12a is configured to support the machine body frame 17 above the crawler 2 and is fixed to the transmission case 5 side so that the wheel shaft 34 of the wheel pipe 34 is installed. A movable bearing cylinder 40, which holds the drive wheel 19 as a bearing, is externally fitted and held on the outer periphery so as to be movable in the left-right direction. Travel and wherein the.