JPS6316656Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention has an internal grain delivery screw horizontally or almost horizontally installed in the threshing grain tank, and
The present invention relates to a grain conveying device of a combine that extends from the conveying end portion of the screw, and has a structure in which the grains conveyed by the screw are conveyed through the discharge tube.

In the above-mentioned grain conveying device, the lifting device can be switched between a storage position in which it is laid down almost along the longitudinal or lateral direction of the machine body, and a usage position in which it extends outward above the machine body. and a rotary part that allows the discharge pipe of the lifting device to rotate freely around the axis of the internal grain conveying screw in the threshing grain tank, and a rotating part that is perpendicular to the axis of the screw and horizontal. Because it was equipped with both a rotating part and a rotating part that allowed relative rotation of the discharge tube in the lifting device around the oriented axis, it not only took time and effort to change the posture, but also made it difficult to move the discharge tube. It had to be divided into a plurality of cylindrical parts, making the structure of the lifting device complicated.

In addition, as a grain conveying device that can be switched between a usage position and a storage position simply by rotating the discharge tube around one axis, for example,
The one disclosed in Publication No. 151148 is known, but in this one, there is a storage space in which the ejection tube must be stored in an upright position with respect to the aircraft body,
A space must be provided around the horizontal axis in which the discharge tube can rotate so that the discharge tube can be tilted around the horizontal axis when the discharge tube is used, and therefore, such space must be secured. As a result, the aircraft had drawbacks such as the large size of the entire aircraft.

The present invention has been developed in view of the above-mentioned circumstances, and it is possible to easily change the position of the lifting device to the storage position or the operating position, and to eliminate the special space required for changing the position. An object of the present invention is to provide a grain conveying device for a combine harvester that can be downsized.

The characteristic structure of the present invention is that, in the grain conveying device of the combine harvester mentioned above, the conveying end of the screw for conveying grain in the tank faces the outside of the threshing grain tank, and the conveying end of the screw for conveying the grain in the tank is exposed to the outside of the threshing grain tank, and the discharge tube of the lifting device is conveyed. The starting end and the conveyance terminal end of the screw are connected via a connecting tube that is inclined with respect to the horizontal plane and has one oblique axis located toward the outside of the machine toward the bottom of the machine, so that the The relative posture of the discharge tube around the oblique axis is configured to be changeable, and its functions and effects are as follows.

In other words, by simply changing the relative posture of the lifting device around the one diagonal axis, the inverted posture can be changed to the retracted posture along the aircraft body, and the upright posture can be changed to the retracted posture that follows the aircraft body, and in the upright posture, the aircraft can be moved closer to the end of the transport You can change the usage position away from the outside.
Also, as mentioned above, from the lying position to the standing position,
Or vice versa, when changing the attitude, the lifting device
The relative attitude can be changed around the axis that is tilted with respect to the horizontal plane and is located on the outer side of the aircraft as the lower part of the aircraft goes, so the space in which the lifting device moves when changing its attitude is the outer space of the aircraft, and the space on the aircraft side Since it does not draw a moving trajectory that can be traversed, there is no need to provide a space on the fuselage side to allow the attitude of the lifting device to be changed, and the absence of that space has made it possible to downsize the aircraft.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the planted grain culm is scraped into the reaping device 2 by the rotating reel 1 and harvested, and the harvested grain culm is transferred to the rotating body 3 and the conveyor 4a.
A pre-processing section configured to be transported rearward along the feeder 5 by a driving section 6, a driving section 7, and the entire harvested grain culm from the pre-processing section are supplied to a handling room and threshed. A crawler-type traveling machine comprising a threshing sorting section 8 that separates the threshed product into grains and dust, a threshing grain tank 9, and a grain transport device 10 that takes out grains from the tank 9 and transports them. A combine harvester is constructed by freely connecting the front part of the combine harvester with a vertical swing operation via a cylinder 11.

As shown in FIG. 1, the threshed grain tank 9 is composed of a lower end portion 9a and an upper end portion with a lid 9b.
A removable intermediate part 9c is provided between the tank and the tank to adjust the tank capacity by changing the number of parts attached.

To configure the grain conveying device 10, as shown in FIG. 3, a screw 12 is installed horizontally or almost horizontally at the bottom of the tank 9, and
One end side of the screw cylinder shaft 12a is linked to the engine 15 via the belt tension clutch 13, the intermediate shaft 14, etc. to enable the screw 12 to be driven, and the screw 12 is transported by a thrower type from the conveyance terminal end. While extending the device 16, the rotation support shaft 16b of the thrower 16a is connected to the intermediate shaft 14 via a bevel gear mechanism 17, a transmission shaft 18 which is rotatably installed in the screw cylinder shaft 12a, and a belt tension clutch 19. In conjunction with this, the thrower 16a can be driven, and the grains in the tank are carried out to one side of the machine body by the screw 12, and are lifted along the thrower cylinder 16c by the releasing action of the thrower 16a. It is arranged to be discharged from a rotary discharge tube portion 16d.

Further, the extension structure of the thrower type lifting device 16 with respect to the screw 12 will be detailed as follows. The conveyance terminal end of the screw 12 is connected to an opening 9 formed in the lower side wall of the tank 9.
a bent cylindrical bracket 20 is protruded from the outer wall of the tank 9 around the opening 9a by bolt connection in a state surrounding the conveying end portion of the screw 12, and The proximal end of the thrower cylinder 16c is attached to the cylinder end of the bracket 20 facing outward from the tank 9, and is rotated about one inclined axis P located laterally outward and rearward of the fuselage toward the lower side of the fuselage. It is installed for easy operation. That is, as shown in FIG. 3, a flange portion 22 is provided protrudingly extending over the outer periphery of the tube end of the bent bracket 20 on the side where the thrower tube 16c is attached.
The stepped portion 22a, which has a thinner wall thickness on the outer circumferential side and a thicker wall thickness on the inner circumferential side of the flange portion 22, is formed in a circumferential shape over the entire circumference of the cylinder end surface, and a ring-shaped backing plate 23 is formed. , bolts are connected on the inner circumferential side of the flange portion 22 so that an annular groove 24 is formed between this backing plate 23 and the cylinder end surface on the outer circumferential side of the thin-walled flange portion 22, and further, the bulge of the thrower cylinder 16c is part 1
6e is provided so as to fit into the annular groove 24 over the entire circumference, so that the cylinder end surface of the bracket 20 forming the annular groove 24 is in an inclined position facing outward, rearward, and downward of the fuselage. Along the annular groove 24 and around the central axis P of the annular groove 24, the thrower cylinder 16
c can be rotated manually, and the thrower cylinder 16c
The posture of the thrower cylinder 16c is maintained by the frictional force between the bulging portion 16e and the annular groove 24. With the above configuration, the lifting device 16
, extending rearward from the tank 9 almost along the longitudinal direction of the aircraft and lowered to a position near the top of the prime mover 7, and a state in which it extends upward from the tank 9 toward the lateral outside of the aircraft. It is designed so that it can be switched between a standing and a standing usage position.

FIG. 4 shows another implementation configuration of the lifting device 16,
The grains from the unloading screw 12 are transferred to the screw 21.
It is designed to be transported by The lifting device 16 using the screw 21 has a flange portion on the cylindrical end surface side of the flange portion 22 protruding from the entire circumference of the cylindrical end on the protruding end side of the bracket 20 protruding from the tank 9 as described above. The wall thickness on the outer circumferential side of 22 is thickened,
In addition, a stepped portion 22a having a thinner inner wall thickness is formed in a circumferential shape, and a ring-shaped patch plate 23 is formed.
, this backing plate 23 and the thin flange part 2
2. The outer periphery of the end of the cylindrical body 16f that is bolted to the outer periphery of the flange portion 22 to form an annular groove 24 with the inner cylindrical end surface of 16g flange protruding from
is provided so as to fit into the annular groove 24 over the entire circumference, so that the annular groove 24 is formed along the cylindrical end surface of the bracket 20 in an inclined position facing outward, rearward, and downward of the fuselage. Further, the screw cylinder 16c forming the lifting device 16 can be manually rotated around the central axis P of the annular groove 24,
The structure is such that the posture of the screw cylinder 16c is maintained by the frictional force between the flange 16g provided at the end of the cylinder 16f of the lifting device 16 and the annular groove 24.

In the above-mentioned implementation configuration, the lifting device 16 is stored lying down above the prime mover 7, and the lifting device 16
Since the base end of the lifting device 16 is located at a lower level than the upper edge of the driving unit 7, the lifting device 16 is slightly inclined in side view when stored. The rotation axis P is also inclined in side view so that the lifting device 16 is along the longitudinal direction of the aircraft.
If the rotation axis P can be made horizontal, the rotation axis P may be made vertical in side view. Further, the present invention can be applied to the case where the screw 12 is disposed in the longitudinal direction of the machine body.In short, the rotation axis P is inclined with respect to the horizontal plane and is located outward from the machine body toward the bottom. All you have to do is set the axis to the center.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the grain conveying device for a combine harvester according to the present invention, FIG. 1 is a partially cutaway side view of the combine, FIG. 2 is a plan view of the combine, and FIG. A cross-sectional view, and FIG. 4 is a cross-sectional view of another embodiment of the lifting device. 9... Grain tank, 12... Export screw,
16... Lifting device, 20... Connection cylinder, P... Shaft core.

Claims (1)

[Scope of claim for utility model registration] 1 Internal grain delivery screw 1 in threshing grain tank 9
2 horizontally or almost horizontally,
A lifting device 16 configured to lift the grains transported by this screw 12 through a discharge tube 16c.
is a grain conveying device of a combine that extends from the conveying terminal end of the screw 12, and has the conveying terminal end of the screw 12 for carrying out the grains in the tank facing the outside of the threshed grain tank 9; , the conveyance start end of the discharge pipe 16c of the lifting device 16 and the conveyance end of the screw 12 are provided with one oblique axis P that is inclined with respect to the horizontal plane and is located further outward from the body toward the bottom. The grain conveying device for a combine harvester is configured such that the relative attitude of the discharge tube 16c about the oblique axis P with respect to the screw 12 can be changed by connecting the discharge tube 16c through a connecting tube 20. 2. The grain conveying device for a combine harvester according to claim 1, wherein the lifting device 16 is a thrower type device. 3. The grain conveying device for a combine harvester according to claim 1, wherein the lifting device 16 is a screw type device.