JPH10243721A - Grain culm-conveying device in combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grain culm-conveying device capable of facilitating the position control of a plant feet-discharging tool, which is difficult because of accumulation of the assembling errors of a conveying system and a threshing system, by installing a rear discharging tool fixed to an auxiliary conveying device in a cantilever-supporting state extending to the feed chain side and in a freely controllable state. SOLUTION: A plant foot-discharging tool 17 is divided to two pieces in the front and rear direction, the front discharging tool 17A is fixed on an auxiliary conveying device 5 in a state having communicating function to the rear discharging tool 17B, and the rear discharging tool 17B is fixed on the auxiliary conveying device 5 in a cantilever-supporting state extending to the feed chain 6 side so that the posture may be freely regulated. Further, preferably, the rear discharging tool 17B is constituted so that the angle of the rear discharging tool against a holder 19 fixed on the auxiliary conveying device 5 may be freely changed around a lateral axial center X, and the holder 19 is constituted so that the angle of the holder against the fixed part 11 of the auxiliary conveying device 5 may be freely changed around a vertical axial center Y.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a vertical conveying device for conveying a harvested grain culm to a feed chain by means of an ear-locking conveying device and a stock-holding / conveying device. It is configured to be able to swing up and down around the front fulcrum for the adjustment of the height, and acts between the end of the stock-holding / conveying device and the beginning of the feed chain, acting on the middle part of the culm of the harvested grain culm in the culm direction. An auxiliary transport device for applying a backward transfer force is provided in a fixed position, and a lower portion of the auxiliary transport device is brought into contact with the root portion of the cereal stem to bring the root portion of the cereal stem into the feed chain start end portion. The present invention relates to a combine grain conveying device provided with a stock dispenser for guiding on an upper surface.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Utility Model Application Laid-Open No. 53-16546, the stock dispenser in the combine grain culm conveying device has been fixedly provided on the lower surface of an auxiliary conveying device.

[0003]

SUMMARY OF THE INVENTION Due to the accumulation of assembly errors of a transport system having a head, a stockholder, and an auxiliary transport device and a threshing system, a stock source dispenser provided at a lower portion of the auxiliary transport device. There was a problem in that the action position was displaced back and forth and up and down with respect to the starting end of the feed chain, and there was a problem that the root portion of the cereal stem could not be guided in a horizontal posture above the starting end of the feed chain. .

[0004] Further, since the stock dispensing tool is provided with its mounting position set with respect to the conveying surface of the auxiliary conveying device based on a standard length grain culm, in the case of a short culm, the stock dispensing tool is used. The position is too low, it is difficult to act on the base of the transported grain culm, the root of the short culm tends to get on the start end of the feed chain, and as a result, the root of the short culm is dragged by the feed chain and the pre-conveyance state of the root In the case of a long culm, the root on the top of the root dispenser is likely to hang down by its own weight, and it is difficult for the root to smoothly rise on the start end of the feed chain. was there.

Further, the conventional stock dispenser is provided so as to exert a stock dispensing action from the intermediate portion of the auxiliary transport device to the transported grain culm, and thus has the following inconvenience. In other words, although the stock-holding / conveying device and the auxiliary conveying device partially overlap in the front-rear direction, at the start end of the auxiliary-transporting device, only the receiving grain stem from the stock-holding / conveying device is engaged to carry out the locked conveyance. In order to pass the culm from the root carrier to the auxiliary transport device by clamping at the middle part, the transport surface at the start end of the auxiliary transport device is formed to have a gentle curved surface But the curved transfer surface at the start end of the auxiliary transfer device is close to the transfer surface of the stock transfer device due to the manufacturing or assembly error of the auxiliary transfer device or the pinch transfer device. Conventionally, the stock feeder is provided at the middle part of the auxiliary transport device in the front-rear direction, so that the stock feeder is used to prevent the locked transfer at the start end of the auxiliary transport device. Can not be Conveying path in a three-point clamping state by the auxiliary transport device as well as strains based pinching transport apparatus becomes long, culms there was a possibility that torn by the relative speed difference between the strains based on nip-conveyed apparatus and the auxiliary transport device. Needless to say, the stock-holding / conveying device and the auxiliary conveyance device are configured to be driven at the same speed, but both are driven at the same speed by the power transmission structure for the stock-holding / conveying device and the power transmission structure for the auxiliary conveyance device. It cannot be done.

An object of the present invention is to solve the above-mentioned drawbacks by devising a method of providing a stock dispenser.

[0007]

According to the first aspect of the present invention, there is provided a vertical transport device for transporting a harvested grain culm to a feed chain by an ear-locking transport device and a stock-holding transport device.
The stock-holding / conveying device is configured to be swingable up and down around a front fulcrum for adjusting the handling depth, and a harvested grain culm is provided between an end portion of the stock-holding / conveying device and a start end of a feed chain. An auxiliary transport device that acts on the middle part of the culm body direction to impart a backward transfer force is provided in a fixed position, and at the lower part of the auxiliary transport device, abuts on the base of the cereal culm and acts on the grain culm. In a combine grain dispensing device provided with a stock dispenser for guiding the stock dispenser to the upper surface of the feed chain starting end, the stock dispenser is divided into two in the front-rear direction, and the front dispenser is rearward. The rear dispensing tool is fixedly provided on the auxiliary transporting device in a state having a guide function to the dispensing device, and the rear dispensing device is attached to the auxiliary transporting device in a cantilevered support state toward the feed chain side and capable of adjusting the posture. [Operation] According to this configuration, the stock dispenser provided at the lower portion of the auxiliary transport device is moved to the start end of the feed chain due to an assembly error of the transport system including the head, stock source, and auxiliary transport device and the threshing system. When the position is shifted back and forth and up and down,
As shown in FIGS. 3 and 4, when the rear dispensing tool 17B is changed in angle about the horizontal axis X with respect to the holder 19, the displacement of the dispensing surface in the vertical direction is corrected, and the holder 19 is moved to the auxiliary transport device. When the angle is changed around the vertical axis Y with respect to the fixing portion 11 of No. 5, the dispensing action position is corrected in the front-rear direction.

When the stock-holding / conveying device 3B is raised around the front fulcrum to adjust the handling depth for short culm, the rear dispensing tool 17B is moved to the horizontal axis X with respect to the holder 19. When the angle is changed upward, the stem of the short culm can be pushed up by the rear dispensing tool 17B and positioned above the start end of the feed chain 6, so that the stem is dragged by the start end of the feed chain. It is possible to avoid the stock source preceding transport state caused. In addition, in order to adjust the handling depth for long culm, the stock-holding and conveying device 3B
Is lowered around the front fulcrum, the rear dispensing tool 17
When the angle of B is changed downward about the horizontal axis X with respect to the holder 19 and the angle of the holder 19 is changed about the vertical axis Y, the action position of the rear dispensing tool 17B is positioned on the stock end side. This makes it possible to suppress the root portion of the grain culm from being bent by its own weight, and to smoothly raise the root portion of the long culm on the starting end of the feed chain.

[0009] Then, due to a manufacturing error or an assembly error of the stock-holding / conveying device 3B or the auxiliary carrying device 5, the curved conveying surface at the start end of the auxiliary carrying device 5 and the conveying surface at the terminal end of the stock-holding / conveying device 3B are close to each other. Even when assembled in the state, that is, even when the transport path in the three-point support state by the tip-locking transporting device 3A, the auxiliary transporting device 5, and the stock-holding and transporting device 3B is formed long, the stock-out dispensing tool 17 can be used. Since the front dispenser 17A having the function of guiding to the rear dispenser 17B is provided at the start end of the auxiliary transport device 5 at the front end of the auxiliary transport device 5, the front dispenser 17A allows the front dispenser 17A to be used at the start end of the auxiliary transport device 5. Locked conveyance is prevented, and the transported culm is guided to the rear dispensing tool 17B while being guided by the front dispensing tool 17A.
Further, since the stock payout device is provided from the start end to the end portion of the auxiliary transport device and is divided into two parts in the front and rear, for example, as in the case of being constituted by one stock payout device, By adjusting the position of the end portion of the original dispensing tool back and forth, the position of the start end portion can be prevented from being displaced. [Effect] According to the invention according to claim 1, assembling errors of the transport system and the threshing system, and satisfactorily guiding the root portion of the grain culm to the upper surface of the starting end of the feed chain regardless of the length of the grain culm. And the culm can be transported favorably.

According to a second aspect of the present invention, the rear dispenser is configured so that the angle of the rear dispenser can be adjusted about a horizontal axis with respect to a holder mounted on the auxiliary transport device, and the holder of the rear dispenser is auxiliary transportable. The angle can be adjusted about the vertical axis with respect to the fixed portion of the device. [Operation] According to this configuration, the operation is the same as that of the invention according to claim 1, and the angle of the rear dispensing tool can be adjusted about the horizontal axis with respect to the holder, and the holder can be vertically adjusted with respect to the fixing part of the auxiliary conveyance device. It is possible to adjust the angle three-dimensionally by configuring the angle around the direction axis. [Effects] According to the second aspect of the present invention, the above effects of the first aspect of the present invention are provided, and the front and rear and up and down adjustment of the rear dispensing tool can be smoothly performed.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the combine includes an elevating device 1 for elevating a grain stalk at a front portion of an airframe.
A vertical transport device 4 for transporting the harvested grain culm to the feed chain 6 of the threshing device 7 by means of the tip-locking transport device 2 and the stock-holding / conveying device 3 is provided. The transfer device 3A and the rear stock holding and conveying device 3B are separately formed, and the rear stock holding and conveying device 3B is moved up and down through the hydraulic cylinder 8 around the front fulcrum P for adjusting the handling depth. It is configured to be movable, and acts between the terminal end of the rear-side root holding and conveying device 3B and the starting end of the feed chain 6 on the intermediate portion of the cut grain culm in the culm body direction to impart a backward transfer force. An auxiliary transport device 5 composed of a nipping transport device is provided.

The rear stock-holding / conveying device 3B is constituted by a conveying chain 9 with projections and a holding rail 10. The auxiliary transport device 5 is fixed to the pre-cutting processing section A in a state where the auxiliary transport device 5 is disposed at a position immediately below the end portion of the tip locking transport device 2. This auxiliary transport device 5 winds a transport chain 13 with a projection around a plurality of sprockets 12 pivotally supported by a transport frame 11 as a fixed portion,
The nipping rail 14 is provided opposite to the nipping and transporting surface of the transport chain 13. The driving sprocket 12 a among the plurality of sprockets 12 is a rolling wheel 15 of the
Is attached to the rotating shaft 16.

At the lower part of the auxiliary conveying device 5, there is provided a stock dispenser 17 for pushing up the stock portion of the grain culm a and guiding it to the upper surface of the starting end of the feed chain 6. The stock dispenser 17 is divided into two parts in the front-rear direction. The front dispenser 17A has a curved shape along the transfer surface at the start end of the auxiliary transfer device 5 in plan view, and the rear dispenser 17B has
In a plan view, the front dispensing tool 17 is L-shaped.
A is attached to the transport frame 11 as a fixed part in a state of intersecting with A.

The front dispensing tool 17A has an inverted L-shaped holder 17a in front view fixed to the end thereof, and the holder 17a is fixedly connected to the transport frame 11 via bolts 18. The rear dispensing tool 17B is rotatably mounted around a lateral axis X with its tip penetrating through a portal 19 in a front view, and the holder 19 is attached to the transport frame 11 via a bolt 20. Is fixed. The rear dispenser 17B is provided with the holder 1
9 is configured so that the angle can be freely changed around the horizontal axis X. To change the angle of the rear dispensing tool 17B, a plate 17C having a long hole 17c is fixed to the rear dispensing tool 17B, and a back nut (not shown) for screwing the bolt 21 is fixed to the inner surface of the side wall of the holder 19. The rear dispensing tool 17B is configured to be able to change the angle around the horizontal axis X with respect to the holder 19 within the range of the long hole 17c. The holder 19 is attached to the transport frame 11 so as to be able to change the angle around the vertical axis Y. The angle of the holder 19 about the vertical axis Y can be changed by setting one of the two bolt holes 19a and 19b formed on the upper surface of the holder to the elongated hole 19b and extending vertically within the range of the elongated hole 19b. The angle can be changed around the axis Y.

According to the above configuration, the working position of the rear dispensing tool 17B of the stock dispensing tool 17 with respect to the starting end of the feed chain 6 is moved forward and backward due to errors in manufacturing and assembling the auxiliary transport device 5 and the feed chain 6. When the position is shifted vertically, as shown in FIGS. 3 and 4, when the rear dispensing tool 17B is changed in angle about the horizontal axis X with respect to the holder 19,
The vertical displacement of the dispensing action surface has been corrected,
When the angle of the holder 19 is changed around the vertical axis Y with respect to the transport frame 11 of the auxiliary transport device 5, the dispensing action position is corrected in the front-rear direction.

When the short stock is conveyed by raising the rear stock transfer device 3B around the front fulcrum P in order to adjust the handling depth, the rear dispensing tool 17B is moved horizontally with respect to the holder 19. The angle is changed upward around X. Then, while the short culm is being conveyed by the auxiliary conveyance device 5, the root of the short culm is moved to the rear dispensing tool 17B.
, And is located above the start end of the feed chain 6 and is not easily dragged by the start end of the feed chain 6.

When the rear stock transfer device 3B is in the long culm transfer posture, the rear dispensing tool 17B is attached to the holder 19B.
The angle is changed downward about the horizontal axis X with respect to. Then, since the rear dispensing tool 17B descends and retreats, the angle of the long culm with respect to the rear dispensing tool 17B in the transport direction becomes gentle, and the long culm can be smoothly climbed on the rear dispensing tool 17B.

[Another Embodiment] As shown in FIG. 6, the starting end of the feed chain 6 may be configured to be vertically adjustable. In such a case, the volume of the transported cereal stem is large,
When the stock dispensing surface of the rear dispensing tool 17B is set at the lower position, the conveying surface at the start end of the feed chain 6 is set at the lower position, so that the transfer of the conveying grain can be smoothly performed. More specifically, the guide rail 25 of the feed chain 6 is divided into two front and rear parts, and the front guide rail 2
A passive sprocket 26 at the tip of the feed chain is mounted on 5A, and the front guide rail 25A is rotatably mounted on the rear guide rail 25B around the horizontal axis P1, and the front guide rail 25A is mounted on the rear guide rail 25B with a through bolt. It is fixed via 27. Two bolt insertion holes 27a are provided in the front guide rail 25A, and the upper surface of the tip of the feed chain 6 can be selectively changed vertically by selectively switching the connection holes 27a. . A tension arm 29 of a tension pulley 28 is rotatably mounted concentrically with the rotation axis of the front guide rail 25A.
A tension spring 30 is provided across the other end of the front guide rail 25A and the tension force of the tension pulley 28 is automatically adjusted with the upward movement of the front guide rail 25A. I have. The overlapping portion of the front guide rail 25A and the rear guide rail 25B is formed in an arc surface centered on the horizontal axis P1. (Note that components having the same functions as those of the above-described embodiment are denoted by the same reference numerals and symbols as those of the embodiment.)

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a schematic plan view of the front of the combine.

FIG. 3 is a plan view of an auxiliary transport device.

FIG. 4 is a side view of the transfer device.

FIG. 5 is an exploded perspective view of the rear dispensing tool.

FIG. 6 is a longitudinal side view of another embodiment.

[Explanation of symbols]

 2 Head-locking conveying device 3 Stock holding and conveying device 4 Vertical conveying device 5 Auxiliary conveying device 6 Feed chain 11 Fixed part 17 Stock dispensing tool 17A Front dispensing tool 17B Rear dispensing tool 19 Holder

Claims (2)

[Claims] 1. A vertical conveying device for feeding a harvested grain culm to a feed chain by an ear-locking conveying device and a stock-holding / conveying device is provided, and the stock-holding / conveying device is moved forward to adjust a handling depth. It is configured to be able to swing up and down around the fulcrum, and between the terminal end of the stock holding and conveying device and the start end of the feed chain,
An auxiliary transfer device that acts on the middle part of the culm body direction of the harvested grain culm and imparts a rearward transfer force is provided in a fixed position, and at the lower part of the auxiliary transfer device, abuts on the root portion of the grain culm. In a combine grain culm conveying device provided with a stock payout tool for guiding the stock base of the grain stalk to the upper surface of the feed chain starting end, the stock stock payout tool is divided into two parts in the front-rear direction, and the front payout is performed. The tool is fixedly provided on the auxiliary transporting device with a function of guiding to the rear dispensing device, and the rear dispensing device is mounted on the auxiliary transporting device in a cantilevered state toward the feed chain side, and in a position adjustable manner. Combine grain conveying device. 2. The rear dispenser is configured to be adjustable in angle about a horizontal axis with respect to a holder attached to an auxiliary transport device, and the holder is rotated about a vertical axis with respect to a fixed portion of the auxiliary transport device. The combine grain conveying device according to claim 1, wherein the angle is adjustable.