JPS606677Y2 - Belt holder mounting structure of belt transmission device - Google Patents

Description

[Detailed Description of the Invention] The present invention provides two types of endless power transmission belts having different transmission directions, arranged so that the pulleys of one of the belts are juxtaposed with each other so that the pulleys are coaxial or close to each other, and A belt holding device having a C-shape or approximately C-shape when viewed in the direction of the rotational axis is provided on each of the outer circumferential portions of both pulleys to prevent the transmission belt from moving laterally relative to the pulleys when the tension clutch is disengaged with respect to the transmission belt. The attachment of a belt presser to a belt transmission device, in which the parts are in opposite positions and can be switched to a non-working position by movement within the same plane, is related to the structure.

The structure of the belt holder attachment of this type of belt transmission device is such that the lateral movement of the transmission belt in the direction of the rotational axis is prevented by contact between the transmission belt and the belt holder when the tension clutch is disengaged. Since the pulley can be spaced evenly or almost equally from the outer peripheral surface of the pulley, there is no need to re-hook the transmission belt every time the clutch is disengaged, and moreover, it is possible to prevent unexpected transmission caused by contact between the transmission belt and the pulley. On the other hand, conventionally, a mechanism has been provided that allows each of the belt pressers to be fixed and unfixed separately in the working position, so that when performing maintenance such as belt replacement, etc. In a narrow place where one pulley of each belt is coaxially arranged or close to each other, both of the fixing mechanisms are unlocked, and then both of the belt pressers are switched to a non-operating position. There was a problem in that it required a great deal of time and effort to change the postures of both belt holders.

In view of the above-mentioned circumstances, the present invention aims to improve the position switching operation of both belt pressers during maintenance and the like so that it can be done quickly and easily.

In other words, the structure of the belt presser attachment of the belt transmission device according to the present invention is that in the official document, the posture switching of both belt pressers is interlocked with each other, and also serves as a fixing mechanism in the working position. When performing maintenance such as replacing the belt, all you have to do is unfasten the one fixing mechanism and switch one of the belt holders to the non-working position, and the other belt holder will also be linked to it. Since it is possible to switch to a non-working posture at the same time, the effort required to change the posture can be halved compared to the conventional method.
In particular, it has become possible to quickly and easily change the posture of both belt holders, which must be done in a very narrow space.

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIGS. 1 and 2, an input shaft 2 of the traveling transmission case M and an input shaft 3 of the threshing device are located at appropriate intervals in the front and back direction with respect to the drive shaft 1 of the engine E.
and two drive boots IJ-4, 5 fitted to the drive shaft 1 of the engine E and both input shafts 2,
Two types of endless transmission belts 8 and 9 having different transmission directions are stretched across the input pulleys 6 and 7 fitted to the input pulleys 3 and 3,
Further, a tension arm 10.11 having rollers 1OA and IIA which can be brought into pressure contact with the transmission belts 8 and 9 is pivotally mounted to be swingable in the direction toward and away from the transmission belts 8 and 9, and the tension arm 10. Tension clutches 12 and 13 that can individually connect and disconnect power transmission from 1 to input shafts 2 and 3
In the belt transmission device of the combine, which consists of
Belt pressers 14, 1 each having a C-shape or approximately C-shape when viewed in the direction of the rotation axis are provided on the outer peripheral portions of the drive legs IJ-4, 5, respectively.
The structure for attaching the openings 14 and 5 in opposite orientations is constructed as follows.

That is, each of the belt pressers 14 and 15 is divided into two at the center in the circumferential direction, and one of the belt pressers 15 is divided into two parts 15A.

15B is attached to a support shaft 17 protruding from the end plate 16 of the engine E in parallel or substantially parallel to the drive shaft 1, and is capable of swinging and switching to a non-operating position away from the threshing device side transmission belt 9. A state in which lateral movement of the transmission belt 9 with respect to the drive pulley 5 is prevented when one tension clutch 13 with respect to the transmission belt 9 is disengaged, that is, the distance from the outer peripheral surface of the drive pulley 5 is smaller than the thickness of the transmission belt 9. It is pivoted in the state.

Further, a divided portion 14A of the one belt presser 14,
14B is a divided portion 15A of the other belt presser 15.

15B is fixed in such a manner as to prevent the transmission belt 8 from moving laterally relative to the drive pulley 4 when the other tension clutch 12 is in the disengaged state, as in the case described above, and both belt pressers 14 and 15 are held in the same plane. Both can be freely switched to a non-working position by integral rocking, and
A fixing mechanism 18 for both belt pressers 14 and 15 in the working position is also used.

The fixing mechanism 18 includes a bracket 18A fixed to the end plate 16 of the engine E, and a bracket 18A fixed to the end plate 16 of the engine E.
Bolts and nuts 18B are fixed to 8A with the ends of the other divided parts 14A and 14B being clamped from the outside.
, 18C.

In addition, 19 in the figure is an input shaft on the reaping pre-processing section side, and this input shaft 19 and the output shaft 20 of the traveling mission case M
A belt tension clutch 21 is configured between the two.

22 and 23 are operating levers for the threshing tension clutch 12 and the reaping tension clutch, and 24 is a pedal for the running tension clutch 12.

Further, as shown in FIG. 5, the one belt presser 1
The divided portions 15A, 15B of 5 are pivotally attached around two supporting shafts 17A, 17B separated from each other, respectively, and the intermediate portions in the longitudinal direction of both side portions 15A, 15B are connected to the fixing mechanism 18. Bolts and nuts 18B that make up the
It may be configured to be fixed via 18C.

Further, in the above embodiment, in the tension clutch disengaged state for the transmission belts 8 and 9, the transmission belts 8 and 9
In order to prevent the belt from moving laterally with respect to the pulleys 4, 5, the gap between the belt presser 14, 15 and the outer peripheral surface of the pulleys 4, 5 is configured to be smaller than the thickness of the belt, but as shown in FIG. Width sides 14 of the belt pressers 14 and 15
b, 14b and 15b, 15b may be pushed and folded toward the transmission belts 8 and 9.

[Brief explanation of the drawing]

The drawings illustrate the implementation of the structure of the belt presser attachment of the belt transmission device according to the present invention, FIG. 1 is a side view of the belt transmission device of a combine harvester, FIG. 2 is a plan view, and FIG. FIG. 4 is an enlarged sectional view of the main part, and FIGS. 5 and 6 are side views of the main part showing other embodiments, respectively. FIG. 4.5... Pulley, 8, 9... Endless transmission belt, 14, 15... Belt holder, 1
4A, 14B, 15A, 15B--Divided portion, 14a, 15a...opening.

Claims (1)

[Claims for Utility Model Registration] ■ Two types of endless power transmission belts 8 with different transmission directions,
9, one boob IJ-4, 5 of each of those belts 8, 9
are disposed so as to be coaxially or close to each other, and the outer circumferential portions of the two boobies IJ-4 and 5 are provided with the tension of the transmission belts 8 and 9 in the disengaged state. A belt presser 14° 15 having a C-shape or approximately C-shape when viewed in the direction of the rotational axis, which prevents lateral movement relative to the pulley 4° 5, is placed with its openings 14a and 15a facing oppositely and on the same plane. The belt holder of the belt transmission device is installed in such a manner that it can be freely switched to a non-working position by moving within the belt. The structure of the belt presser attachment of the belt transmission device is characterized in that the mechanism 1B is also used. (1) Each of the belt pressers 14 and 15 is divided into two in the circumferential direction, and the divided portions 15A and 15B of one belt presser 15 are connected to the divided portions 14A and 14B of the other belt presser 14. The belt presser attachment of the belt transmission device according to claim 2 of the utility model registration claim is a structure in which the belt holders are each fixed.