JPH0713482Y2 - Combined waste straw transport structure - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a waste straw conveying structure for sending waste straw from a threshing device to a waste straw shredding device and a waste straw processing device in a combine harvester.

[Conventional technology]

In combine harvesters, the waste straw transporting device that transports the waste straws from the threshing device to the rear is composed of a chain with protrusions and an extendable guide rail below this, and the waste straws are installed below the waste straw transporter. A waste straw shredding device and a dropper (corresponding to a waste straw processing device) are arranged along the transport direction.

With this structure, when the guide rail is contracted, the waste straws from the end of the guide rail are sent to the front waste straw shredding device and shredded. The discharged straw is passed through the discharged straw shredding device and sent to the dropper.

[Problems to be solved by the device]

In the case of the combine as described above, for example, the actual exploitation Sho 57-141747
As disclosed in Japanese Unexamined Patent Publication No. 2004-242242, a guide rail of an exhaust straw conveying device and an operating lever are connected via a wire, and the guide rail can be extended and retracted by an operating lever at the operator's hand. There is.

However, since the expansion and contraction stroke of the guide rail in the waste straw conveying device is relatively long, simply connecting the guide rail and the operation lever with a wire also makes the operation stroke of the operation lever large. There is room for improvement in terms of operability.

An object of the present invention is to provide a combine straw discharge structure so that the guide rail of the discharge straw transfer device can be accurately expanded and contracted even with an operating lever having a relatively short operation stroke.

[Means for Solving the Problems]

The feature of the present invention resides in the structure of the combine straw discharge conveyor structure as described above.

A chain with protrusions and a guide rail that is arranged to face the lower side of the chain and is expandable and contractible are configured to configure a discharge straw conveying device that conveys a discharge straw while sandwiching it between the chain and the guide rail. The discharge straw shredding device and the discharge straw processing device are arranged in this order below the discharge straw conveying device in the conveying direction of the discharge straw, and the swingable operation lever is operated in the first direction. When,
When the discharge straw guide plate on the upper surface of the discharge straw shredder is operated to be opened and when the operation lever is operated in the second direction opposite to the first direction, the discharge straw guide plate is closed. Is equipped with a linkage mechanism that interlocks the operation lever and the discharge straw guide plate, and a pulley is attached to the operation lever via a flexible mechanism so that the guide is wound around the pulley from the fixed part to the fixed part side. It is connected to the rail, and when the operating lever is operated in the first direction, the discharged straw from the end of the guide rail moves from the position of the discharged straw guide plate opened by the linkage mechanism to the discharged straw shredding device. When the guide rail is contracted so as to be fed in and the operation lever is operated in the second direction, the guide rail is extended so that the discharged straw from the end of the guide rail is sent to the discharged straw processing device. Equipped with wire Te, flexible mechanism to operate the linkage mechanism before the operation of the pulley with the operating lever is obtained by setting the operation order of the pulley and linkage mechanism.

[Action]

(I) With the construction of the present invention, for example, as shown in FIGS. 1 and 3, when the operating lever (7) is operated to swing, the pulley (15) of the operating lever (7) becomes a so-called moving pulley type. For example, the pulley (15) is attached to the fixed part (1
If the operating lever (7) is swung in the direction away from 7) and (20), the wires (16) and (19) will be pulled by a length corresponding to twice the moving distance of the pulley (15). hand,
The guide rail (2b) is slid.

(Ii) honn When configured as in the present invention, at the same time when the guide rail (2b) is expanded / contracted by the operation lever (7), the discharge straw guide plate (12) of the discharge straw shredder (3) is operated by the operation lever (7). Is opened and closed.

Thus, for example, when the operating lever (7) is operated in the first direction as shown in FIG. 3, the discharge straw guide plate (12) is opened and the guide rail (2b) is contracted, so that the guide rail (2b) is retracted. The waste straws from the end of () are sent to the waste straw shredder (3). On the contrary, for example, when the operation lever (7) is operated in the second direction as shown in FIG. 1, the discharge straw guide plate (12) is closed and the guide rail (2b) is extended so that the guide rail (2b) is extended. The waste straws from the end of () are sent to the waste straw processing device (4). Therefore, such two states can be switched by operating one operating lever (7).

(Iii) When switching the discharge straw to a state where it is sent to the discharge straw processing device, if the guide rail is extended while closing the discharge straw guide plate, the drop position of the discharge straw (the end of the guide rail) is moved. Since the discharge straw guide plate is closed, the discharge straw may be pinched at the end of the discharge straw guide plate depending on the drop position of the discharge straw guide plate. Sometimes.

On the other hand, in the present invention, when the operation lever is started to be operated in the second direction, the operation of the accommodation mechanism causes the discharge straw guide plate to be closed and then the guide rail to be extended. In this way, since the discharge straw guide plate is closed while the drop position of the discharge straw (the end of the guide rail) does not change, the discharge straw guide plate is closed at the end of the discharge straw guide plate by the closing operation of the discharge straw guide plate. There is no such thing as a trap.

[Effect of device]

As described above, by expanding the operation stroke of the operation lever with a simple structure that utilizes the function of the movable pulley, the guide rails of the waste straw conveying device can be expanded / contracted accurately and can be used in a combine harvester. We were able to improve the operability of the discharge straw transport structure.

With one operating lever, you can open and close the guide rails of the waste straw conveying device and simultaneously open and close the waste straw guide plates of the waste straw shredding device. It was also possible to improve the operability of switching between the two states of feeding into the straw processing device.

Further, by configuring the guide rail to be extended after the discharge straw guide plate is closed, the discharge straw is sandwiched at the end of the discharge straw guide plate by the closing operation of the discharge straw guide plate, and the work is performed. It was possible to prevent problems that would be interrupted.

〔Example〕

A combine, which is one of the embodiments to which the present invention is applied, will be described below with reference to the drawings.

As shown in FIG. 4, the discharged straw discharged from the threshing device (1) is sandwiched and conveyed rearward (to the right in the drawing) from the discharged straw conveying device (2), and the discharged straw shredding device (3) or Dropper for discharging waste straw (4) (corresponding to waste straw processing device)
Sent to. As shown in Fig. 1, the discharge straw conveying device (2) is composed of a chain (2a) with a projection and a slide telescopic guide rail (2b), and the guide rail (2b) is below the chain (2a). The waste straws are arranged so as to face each other along the side, and are conveyed while being sandwiched between the chain (2a) and the guide rail (2b).

Next, the extension / contraction operation structure of the guide rail (2b) will be described. As shown in FIG. 4, a recess is provided on the side of the thresher (1) in a part of the Glen tank (5) behind the cockpit (6), and this recess supports the operation lever (7). Box (8) is attached. As shown in FIG. 1 and FIG. 2, a fan-shaped operation member (9) (corresponding to an accommodation mechanism) is pivotally supported around a horizontal axis (P ₁ ) in the support box (8), The operation lever (7) is fixed to the operation member (9), and the operation arm (10) is independently swingable around the horizontal axis (P ₁ ) independently of the operation member (9) (corresponding to an interchange mechanism). )
Is supported.

On the other hand, on the upper part of the waste straw shredding device (3), the waste straw guide plate (12) which is swingable and openable and urged to the closing side by the spring (11) is attached, and the operation member (9). The discharge straw guide plate (12) is connected via a third wire (14) (corresponding to a linkage mechanism). In this case, a slack portion (14a) is provided on the side of the third wire (14) for the guide wall (12) for discharging waste.

A two-stage pulley (15) (corresponding to a pulley) is attached to the operation arm (10), and a first wire (16) (corresponding to a wire) is provided from an upper first fixing portion (17) (corresponding to a fixing portion). ,
The guide rail (2b) in the waste straw transfer device (2) is wound around the two-stage pulley (15) and the fixed pulley (18).
Attached to the base of. Also, the second wire (19) (corresponding to the wire) is located below the second fixing portion (20) (corresponding to the fixing portion).
From the two-step pulley (15) to the guide rail (2
It is connected to the tip of b).

In the state shown in FIG. 1 (the state in which the operation lever (7) is operated in the second direction), the discharge straw guide plate (12) is closed and the guide rail (2b) is extended, and the discharge straw is Are released onto the dropper (4). When the operating lever (7) is operated from the (A) position to the (B) position, the operating member (9) swings upward, the third wire (14) is pulled, and the slack portion (14a) disappears. However, the operation arm (10) does not move in the state shown in FIG. 1 and the first contact portion (9a) of the operation member (9) contacts the lower surface of the operation arm (10). Become.

Further, as shown in FIG. 3, the operation lever (7) is set to (C).
When it is operated to the position (the operation lever (7) is operated in the first direction), the operation arm (10) is moved together with the operation member (9).
Is swung upward, the second wire (19) and the third wire (14) are pulled, the guide rail (2b) is contracted, and at the same time the discharge wall guide plate (12) is opened. To be done. In this case, the two-step pulley (15) exerts a so-called dynamic pulley-like function, and is twice as long as the upward moving distance of the two-step pulley (15) (approximately the length of the guide rail (2b). The second wire (19) is pulled by (correspondingly).

Conversely, when the operating lever (7) is returned to the (B) position from the state shown in FIG. 3, it is shown in FIG. 5 (however, FIG. 5 shows the dropper (4)).
Rather than the bundling device (21) (corresponding to the waste straw processing device), the operating arm (10) is located on the contracted side of the guide rail (2b). The third wire (14) is pushed and the discharge straw guide plate (12) is closed. In this state, the second contact portion (9b) of the operating member (9) comes into contact with the upper surface of the operating arm (10), so that the state shown in FIG. 5 changes to the position (A) in FIG. When you operate the operation lever (7) (operation lever (7)
Is operated in the second direction), the operation arm (10) is oscillated downward together with the operation member (9). in this case,
In the same manner as described above, the two-step pulley (15) exerts a function of a moving pulley, and the first wire (16) is operated by pulling the first wire (16) by a length twice the moving distance of the two-step pulley (15) downward. The guide rail (2b) is extended.

[Another embodiment]

In the above-described embodiment, the wire is used for both the extension and contraction operations of the guide rail (2b). For example, the guide rail (2b) is biased toward the extension side by a spring or the like, and only the contraction operation is performed by pulling the wire. It may be configured to perform in.

Further, as shown in FIG. 5, a bundling device (21) (corresponding to a waste straw processing device) is connected to the rear part of the waste straw shredding device (3) in place of the dropper (4), and the operation lever (7) is connected. Can also be configured to be switched only at the (B) position and the (C) position. According to this structure, only the operation member (9) is operated to open / close the discharge straw guide plate (12) while the operation arm (10) is stationary on the contraction side of the guide rail (2b). At the open position of the discharge straw guide plate (12), the discharge straw is supplied to the discharge straw shredder (3), and the discharge straw guide plate (12)
The discharged straw is sent to the binding device (21) at the closed position of.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of a combine straw discharge structure according to the present invention, and FIG. 1 shows an operating lever when a guide rail is extended and a discharge straw guide plate is closed. And FIG. 2 are diagrams showing a linked state of the respective parts, FIG. 2 is an inclined view around the operation arm equipped with the operation member and the two-stage pulley, and FIG. 3 is a state in which the operation lever is operated to the (C) position from the state shown in FIG. Showing the state in which the guide rail is contracted and the discharge straw guide plate is opened, FIG. 4 is a plan view of the combine, and FIG.
It is a figure which shows another Example equipped with the binding device instead of the dropper of the figure. (2) …… Discharging straw conveying device, (2a) …… Chain with projection, (2b) …… Guide rail, (3) …… Discharging straw shredding device, (4), (21) …… Discharging straw Processor, (7) ……
Operating levers, (9), (10) …… flexibility function, (12) ……
Exhaust straw guide plate, (14) ... linkage mechanism, (15) ... pulley, (16), (19) ... wire, (17), (20) ... fixed part.

Claims (1)

[Scope of utility model registration request] 1. A chain (2a) having a projection, and a guide rail (2b) which is disposed below the chain (2a) so as to be opposed to each other and which can extend and contract. A discharge straw conveying device (2) for conveying while sandwiching between the rail (2b) is formed, and a discharge straw shredding device is provided below the discharge straw conveying device (2) along the discharge straw conveying direction. (3) and the waste straw processing devices (4) and (21) are arranged in this order, and when the swingable operation lever (7) is operated in the first direction, the waste straw shredding device ( When the discharge straw guide plate (12) on the upper surface of 3) is operated to open and the operation lever (7) is operated in the second direction opposite to the first direction, the discharge straw is discharged. Make sure that the guide plate (12) is closed.
The operation lever (7) is provided with a linking mechanism (14) for interlockingly connecting the discharge wall guide plate (12), and the pulley (15) is connected to the operation lever (7) through the interchange mechanisms (9) and (10). ) Is attached to the guide rail (2b) so that it is wound around the pulleys (15) from the fixed portions (17) and (20) and faces the fixed portions (17) and (20). When the operation lever (7) is operated in the first direction, the guide rail (2b)
The guide rail (2b) so that the discharge straw from the end of the discharge straw is sent from the position of the discharge straw guide plate (12) opened by the linkage mechanism (14) to the discharge straw shredding device (3). ) Is contracted and the operation lever (7) is operated in the second direction, the guide rail (2b)
The waste straws from the end of the waste straw processing device (4), (2
1) is provided with wires (16) and (19) for extending and operating the guide rail (2b), and the interchange mechanisms (9) and (10) include the operation lever (7).
The combine straw discharge structure for transporting the pulley (15) and the linkage mechanism (14) so that the linkage mechanism (14) is operated before the operation of the pulley (15) by the.