JPH0958539A - Crawler type running device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently loosen a crawler and to facilitate a work to mount and demount a crawler. SOLUTION: A crawler 4 is run around a drive wheel 1, a plurality of rolling wheels 2, 2..., and a tension wheel 3, arranged, in the order, from a front to constitute a running device. The tension wheel 3 is arranged in a position higher than that of a rearmost part rolling wheel 2 and arranged at the rearmost rolling wheel 2 in such a manner that a longitudinal position is regulatable between a position where it is overhung rearward therefrom and a position where it is moved aside to a front.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crawler belt type traveling device mounted on a combine or the like.

[0002]

2. Description of the Related Art Conventionally, a traveling device such as a combine has been
It is configured by winding an endless orbital band such as a crawler around a driving wheel, a plurality of rolling wheels, and a tensioning wheel arranged from the front. Further, the tension wheel is arranged at a position higher than the rearmost rolling wheel, and the front and rear positions of the tensioning wheel are adjustable at a position projecting rearward with respect to the rearmost rolling wheel.

In adjusting the front and rear positions of the tension wheel, the tension of the endless track belt is adjusted to be suitable for running by adjusting the rearward projecting position, and the front end belt is relaxed by moving it forward. The purpose is to facilitate the attachment and detachment of the endless track zone. Incidentally, the attachment / detachment of the endless track is usually carried out with the traveling device on one side being lifted by a crane or the like.

[0004]

However, in the above-mentioned conventional crawler belt type traveling apparatus, the tension wheel is restricted in its forward movement limit position due to interference with the rearmost rolling wheel, and the rearmost portion thereof is restricted. The front and rear position can be adjusted only at the position projecting rearward with respect to the wheel. That is, the tension wheel cannot be moved to a position retracted forward from the rearmost wheel.

For this reason, even if the tension wheel is moved to the forward limit position, the state of relaxation of the endless track band obtained by this is only slight. Therefore, the crawler belt cannot be relaxed sufficiently, and the work for attaching and detaching the crawler belt cannot be easily performed.

[0006]

The present invention employs the following technical means to solve the above-mentioned problems.
That is, the driving wheel 1, the plurality of rolling wheels 2, which are arranged from the front,
2 ..., in the traveling device configured by winding the endless track 4 around the tension wheel 3, the tension wheel 3 is replaced with the rearmost wheel 2.
A crawler belt type traveling characterized in that it is arranged at a higher position and is provided so that the front-rear position can be adjusted from the position projecting rearward from the rearmost rolling wheel 2 to the position retracting forward from this. It is a device.

[0007]

In the crawler belt type traveling device of the present invention, the crawler belt 4 is wound around the drive wheel 1, the plurality of rolling wheels 2, 2, ... The tension of the endless track zone 4 is adjusted to a value suitable for traveling by adjusting the rearward projecting position of the vehicle, and the driving wheels 1 are rotationally driven in this state for traveling.

When the endless track zone 4 is attached or detached, the tension wheel 3 is moved to a position retracted forward with respect to the rearmost rolling wheel 2, whereby the endless track zone 4 is moved. Let it relax.

[0009]

As described above, in the crawler belt type traveling device according to the present invention, the tension wheel 3 can be moved to the position retracted forward with respect to the rearmost wheel 2 and therefore, the infinite track is possible. The orbital zone 4 can be relaxed enough,
The work of attaching / detaching the crawler belt 4 can be easily performed.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to a combine. The combine machine body 5 is equipped with a threshing device 7, a grain storage device 8, a control unit 9, an engine 10 and the like above a machine frame 6, and traveling devices 11 are provided on both left and right lower sides of the machine frame 6. A reaping device 12 is provided in front of the machine frame 6 so as to be able to move up and down by the expansion and contraction operation of the hydraulic cylinder 13. The grain storage device 8 is provided behind the control unit 9 and adjacent to the side of the threshing device 7.

The machine frame 6 is constructed by welding and connecting a plurality of square pipe-shaped frames to each other. First, a right end frame 14 and a left end frame 15 along the machine front-rear direction on both left and right sides, and a front end frame 16 and a rear end frame 17 along the machine left-right direction on both front and rear sides, The frame is constructed in a rectangular shape in plan view by welding connection.

A front frame 18 and a rear frame 19 are arranged between the front end frame 16 and the rear end frame 17 along the lateral direction of the machine body with a predetermined space therebetween. To place. The left and right ends of the front frame 18 and the rear frame 19 are welded and connected to the inner surfaces of the right end frame 14 and the left end frame 15, respectively. Further, between the right end frame 14 and the left end frame 15, a right main beam 20 and a left main beam 21 are arranged at a predetermined interval along the longitudinal direction of the machine body.
The right side main beam 20 and the left side main beam 21 are
At the intersections of the front side end frame 16, the front side frame 18, the rear side frame 19 and the rear side end frame 17, they are attached by welding connection therebelow. Therefore, the right side main beam 20 and the left side main beam 21 are connected to the front end frame 16, the front frame 18, and the rear frame.
The frame 19 and the rear end frame 17 are arranged in a lower position with a slight gap therebetween.

The right end frame 14 extends forward from the front end side frame 16 and extends forward from the extending end portion and the middle portion of the front end side frame 16 in the left-right direction. The left and right end portions of the front end frame 23 along the left-right direction are welded and connected to the extending end portion of the extending frame 22 that extends. As a result, the control portion support frame portion 24 that supports the control portion 9 is formed.

A traveling mission case mounting station 26 is welded to the central portion of the front end frame 16 in the left-right direction as a station for mounting the traveling mission case 25 for driving the traveling device 11. It is fixed and provided. 27 is an engine supporting frame part, 28 is a threshing device supporting frame part, 29
Is a grain storage device supporting frame portion, and 30 is a load retaining lobe.
Hanging hook, 31 is a threshing side cover mounting step, 32
Is a frame for supporting and pivoting the mowing suspension, 33 is a hydraulic cylinder mounting stage for mounting the hydraulic cylinder 13, and 34 is a battery mounting table.

Then, the upper ends of the left and right front frame feet 35, 35 are welded to the lower surface of the front end side frame 16, and the right main beam is connected to the rear surface of the left and right front frame feet 35, 35. The front ends of the frame 20 and the left main beam 21 are connected by welding. A front reinforcing frame for welding and connecting the right main beam 20 and the left main beam 21 to the front frame 18 is provided below the middle portion of the front frame 18. The reinforcement frame 36, the right main beam 20, and the left main beam.
The left and right intermediate frame foot 37 across the frame 21,
The upper end of 37 is welded and connected.

Also, on the lower side of the rear frame 19,
The right main beam 20 with respect to the rear frame 19
An intermediate reinforcing frame 38 for welding and connecting the left main beam 21 and the left main beam 21 is provided. Further, at the rear position of the rear frame 19, the right side main beam 20 and the left side main beam 21 are welded and connected by a rear reinforcing frame 39. Then, the rear reinforcing frame 39
The upper ends of the left and right rear frame feet 40, 40 are welded and connected to the right main beam 20 and the left main beam 21.

The left and right front frame feet 35, 35, the left and right middle frame feet 37, 37,
Left and right wheel frames 41, 41 along the longitudinal direction of the machine are welded to the lower ends of the left and right rear frame feet 40, 40, respectively. Since the left and right rolling wheel frames 41, 41 are symmetrically arranged, the left rolling wheel frame 41 will be described.

On the rolling wheel frame 41, six rolling wheel groups 2 are pivotally supported from the front end through rolling wheel supporting bosses 42, and the intervals between the rolling wheel groups 2 are at the center. The space 43 between the parts is formed to be larger than the other parts, and the upper roller 45 is pivotally supported above the space 43 by a support station 44. Further, below the roller frame 41, the roller frame 4 is provided.
A crawler guide 46 is provided along the front-rear direction of 1 to be disposed between the left and right rolling parts of the second group of rolling wheels. The crawler guide 46 has its front end portion bent in a forward rising inclination posture and arranged in the silhouette of the rolling wheel 2 at the front end portion, and its middle portion is retracted upward at the spacing portion 43. It is bent, and the rear end thereof is bent rearward to an inclined posture and is arranged in the silhouette of the rolling wheel 2 at the rear end. The crawler guide 46 is configured to be fixed to the wheel frame 41 by mounting stations 47, 47, 47 at the front end portion, the intermediate portion and the rear end portion.

At the front end of the wheel frame 41, a wheel pipe mounting station 48 of the traveling mission case 25 is welded and connected in a forwardly inclined posture. The traveling mission case 25 has an upper rear surface connected and supported by a traveling mission case mounting station 26 on the machine frame 6 side, and a wheel pipe mounting station 48 on the rolling wheel frame 41 side. The lower foil pipe portion is connected and supported to be stably supported by the machine body 5.
The drive wheels 1 are rotationally driven by a wheel shaft in a wheel pipe of the traveling mission case 25.

A tension wheel support frame 49 is provided at the rear end of the rolling wheel frame 41 so as to be disposed above the rolling wheel frame 41. The tension wheel support frame 49 has its inner end placed on the upper surface of the rolling wheel frame 41, and
The rear frame foot 40 is arranged so as to be fitted into the notch at the lower end of the rear frame foot 40 from the outside. Then, the wheel frame 41
These rear frame foots 4 are provided by interposing a connecting reinforcing plate 50 extending over the inner side surface and the tension wheel supporting frame 49 inner end surface.
0, the wheel frame 41, and the tension wheel support frame 49 are welded to each other.

The tension wheel support frame 49 is formed of a square pipe-shaped member, and slide bosses 51, 51 extending in the front-rear direction are arranged side by side.
A female screw portion 52 extending in the front-rear direction is provided between the terminals 1 and 51. Then, the left and right tension wheel support rods 53, 53 are inserted into the slide bosses 51, 51 so as to be slidable back and forth, and at the rear end portions of the left and right tension wheel support rods 53, 53,
A tension wheel shaft 55, which rotatably supports the tension wheel 3 via a bearing 54, is attached by fastening nuts 56, 56. As a result, the tension wheel 3 is arranged at a position higher than the rearmost rolling wheel 2 and extends from the rearmost rolling wheel 2 rearward to the frontward retracting position. The front and rear positions are adjustable. On the other hand, the front ends of the left and right tension wheel support rods 53, 53 are connected to each other by a connecting arm 58 having a positioning boss 57. Then, the male screw portion of the tension adjusting male screw shaft 59, which is provided so as to be rotatable with respect to the positioning boss 57 and not slidable in the front-rear direction, is connected to the female screw portion 5 of the tension wheel support frame 49.
Screw to 2. A front end portion of the tension adjusting male screw shaft 59 is formed as a hexagonal shaft, and a locking pin 60 can be mounted through the hexagonal shaft portion.

The crawler type crawler belt 4 is wound around the drive wheel 1, the group of rolling wheels 2 and the tension wheel 3 which are constructed and arranged as described above to form the traveling device 11. With the above configuration, when the hexagonal shaft portion of the front end portion of the tension adjusting male screw shaft 59 is normally rotated by a tool such as a spanner, the tension wheel 3 moves rearward with respect to the tension wheel support frame 49.
As a result, the rearward extension position of the tension wheel 3 is adjusted to adjust the tension of the endless track zone 4 to a value suitable for traveling, and in this state, the drive wheel 1 is rotationally driven from the traveling mission case 25. Drive.

When the endless track 4 is attached or detached, the tension adjusting male screw shaft 59 is rotationally adjusted in the opposite direction to move the tension wheel 3 forward with respect to the tension wheel supporting frame 49. . As a result, the tension wheel 3 can be moved to a position retracted forward from the rearmost wheel 2, whereby the endless track 4 can be greatly relaxed, and the work of attaching and removing the endless track 4 can be easily performed. Is something that can be done.

[Brief description of drawings]

FIG. 1 is a side view of a combine according to an embodiment.

FIG. 2 is a plan view of the combine according to the embodiment.

FIG. 3 is a plan view of a machine frame portion showing a traveling device omitted in one embodiment.

FIG. 4 is a side view of the machine frame portion, in which the traveling device is omitted in one embodiment.

FIG. 5 is a rear view of the machine frame portion, in which the traveling device is omitted in one embodiment.

FIG. 6 is a rear view of a part of the embodiment in which the traveling device is omitted.

FIG. 7 is a partial enlarged side view showing the traveling device in an embodiment omitted.

FIG. 8 is a partial enlarged side view showing the traveling device in an embodiment omitted.

FIG. 9 is a partly enlarged rear view showing the traveling device in an embodiment omitted.

FIG. 10 is an enlarged rear view of a part of the embodiment in which the traveling device is omitted.

FIG. 11 is a partial enlarged rear view showing the traveling device in an embodiment omitted.

FIG. 12 is a partly enlarged rear view showing the traveling device in an embodiment omitted.

FIG. 13 is a plan view of the machine frame portion showing the left traveling device in one embodiment.

FIG. 14 is a side view of the machine frame part showing the left traveling device in one embodiment.

FIG. 15 is a rear view of an essential part showing a part of the right side traveling device in one embodiment.

FIG. 16 is a partial enlarged side view showing the left traveling device in one embodiment.

FIG. 17 is an enlarged side view of the essential part showing the left-side traveling device in one embodiment.

FIG. 18 is an enlarged plan view of the essential part showing the left traveling device in one embodiment.

FIG. 19 is an enlarged rear view of the essential part showing the traveling device on the right side in one embodiment.

[Explanation of symbols]

 1 Drive wheel 2 Rolling wheel 3 Tension wheel 4 Endless track

Claims (1)

[Claims] 1. In a traveling device configured by winding a crawler belt zone 4 around a drive wheel 1, a plurality of rolling wheels 2, 2, ..., A tension wheel 3 arranged from the front, the tension wheel 3 is the rearmost part. The infinite position, which is arranged at a position higher than the rolling wheel 2 and is adjustable in the front-back position from a position projecting rearward from the rearmost rolling wheel 2 to a position retracting forward from this. Orbital traveling device.