JPH10201347A - Attachment structure for rear open/close cover in combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the attachment structure for a rear open/close cover in a combine where attachment/detachment work is easily executed only by the attachment/detachment of simple parts and the slide operation of a cover mainbody. SOLUTION: A spindle 14 whose projecting ends are respectively fitted to right and left brackets 15 is provided in the upper end edge of the rear part open/close cover 12, a link mechanism 18 for operating the open/close of the rear part open/close cover 12 is arranged in a position near one projecting end, the spindle 14 is connected to the link mechanism 18 so as to be freely inserted and pulled out through an engagement pin 17 which is juxtaposed with the spindle 14 and the attachment/detachment of the rear part open/close cover 12 and the insertion/pulling-out of the engagement pin 17 as against the link mechanism 18 are executed by the axial direction slide operation of the spindle 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a rear opening / closing cover in a combine, and more particularly, to a rear portion of a combine which can be easily attached / detached only by simple attachment / detachment of components and sliding operation of a cover body. The present invention relates to a mounting structure for an opening / closing cover.

[0002]

2. Description of the Related Art Conventionally, a cutter device for cutting threshed waste straw is provided at the rear of a threshing unit mounted on a traveling body, and a rear opening / closing cover which can be opened behind the cutter device is pivotally provided. When the opening / closing cover is closed, the cutter device is used to cut the straw, and when the rear opening / closing cover is opened, the straw is released outside the machine. When the rear opening / closing cover is removed and a knotter (bundling machine) is attached. The left and right ends of a pivot that is horizontally straddled on the upper edge of the rear opening / closing cover are supported by brackets that are separated from each other on the left and right sides of the fuselage. Then, a switching operation is performed to open or close the rear opening / closing cover according to the content of the waste straw processing operation.

[0003] However, with the above configuration, when the rear opening / closing cover is attached / detached at the time of bundling and discharging the straw by the knotter, it is necessary to remove many parts of the bracket and bolt nut for mounting the cover body. ,
Disengagement of the link structure with the link mechanism that opens and closes this, not only involves cumbersome preparation work such as, but also often causes loss of parts, forgetting to attach, etc., and hinders smooth field work, Had the disadvantage that

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances to solve the conventional disadvantages, and aims at simple attachment and detachment of parts and mounting of a cover body. An object of the present invention is to provide a mounting structure of a rear opening / closing cover in a combine which can easily perform a detaching operation only by a slide operation.

[0005]

Means for Solving the Problems In order to solve the problems, a technical means adopted by the present invention is to provide a cutter for cutting threshed waste straw at the rear of a threshing section mounted on a traveling body, and A rear opening / closing cover that can be opened to the rear of the machine is pivoted behind the cutter via left and right brackets provided on the machine frame side. In the combine configured to switch between the discharge of the straw and the operation of discharging the straw, a pivot shaft for fitting the protruding ends into the left and right brackets is provided along the upper edge of the rear opening / closing cover, and is located near one of the protruding ends. And a link mechanism for opening and closing the rear opening / closing cover is arranged, and the pivot shaft is removably connected to the link mechanism via an engaging pin attached thereto, so that the pivot shaft can slide in the axial direction. Open the rear It is characterized in that it has to perform and insertion and removal of the engagement pin to the cover of the detachable link mechanism.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described in detail with reference to an embodiment shown in the drawings. 1 to 3, reference numeral 1 denotes a combine. The combine 1 is provided on a front part of a body frame 3 provided with left and right crawler traveling devices 2 and 2, from a culm carding body 4, a weeding body 5 and the like. A pre-processing unit 6 is mounted so as to be able to move up and down, and a driver's seat 8 provided with a driving operation unit 7 at a front part and a side part is arranged behind the pre-processing part 6. A grain tank 9 is horizontally rotatably disposed on one side, and a threshing unit 10 having an unillustrated hulling cylinder is provided on the other side of the grain tank 9.

A horizontally rotatable discharge auger 11 is mounted at the rear of the Glen tank 9 toward the front of the fuselage, and the paddy subjected to threshing and sorting in the threshing unit 10 is lifted and conveyed to the Glen tank 9. After being stored in the storage tank 9, it is configured to be discharged from the bottom of the Glen tank 9 to the outside through the discharge port 11 a of the discharge auger 11.

At the rear of the threshing unit 10, a cutter (not shown) for cutting threshed waste is provided, and a rear opening / closing cover 12 that can be opened to the rear of the machine is formed with a curved rear side. A fixed base 12a is provided at the rear edge of the fixed cover 12a having improved rigidity, and a base cover 12 'rotatable up and down is provided on one side in front of the fixed base 12a via a fulcrum X. The operation of the switching lever 13 provided in the operation unit 7 switches the operation of cutting the waste with the cutter and the operation of discharging the straw to the outside by opening the rear opening / closing cover 12.

FIGS. 4 to 8 (a) show a mounting structure of the rear opening / closing cover 12 and a connection structure between the switching lever 13 and a pivotal support made of a hollow pipe at the upper end edge of the rear opening / closing cover 12. As shown in FIG. The shaft 14 is fixed over the entire width, and on the side surface of the fixed cover 12a, brackets 15 and 15 made of an L-shaped angle material integrally formed with a mounting surface 15a and a rising support surface 15b are provided in the lateral direction of the body movement. The left and right protruding ends 1 of the pivot shaft 14 are opposed to each other.
4a, 14b, the mounting surface 1 of the brackets 15, 15
Slot 1 drilled from 5a to rising support surface 15b
6 and 16, respectively, so that the rear opening / closing cover 12 can be opened to the rear of the fuselage around the pivot 14. 15c is a mounting bolt and nut.

Further, an engaging pin 17 is integrally provided on the protruding end 14b side of the pivot shaft 14, and the engaging pin 17 is fitted and supported in a long hole 18a of a link mechanism 18 described later. , The rear opening / closing cover 12 via a pivot shaft 14 that rotates in connection with the rotation operation of the link mechanism 18.
The link mechanism 18 includes, as shown in FIGS. 5 and 6, a link arm 19 having an elongated hole 18a and the switching lever 13.
A rotating arm portion 21 formed by fixing the other end of the operation wire 20 having one end connected thereto is integrally formed with the fixed cover 12.
The operation wire 20 is loosely fitted on a rotation support shaft 22 that is rotatably supported on one side surface of the operation wire 20 and is rotated by a pulling operation of the operation wire 20.

On the other hand, an interlocking arm 23 to which one end of an operation wire 20 is connected is fixed to a rotation base end of the switching lever 13, and a lever guide 2 provided on one side of the operation unit 7.
By inclining the switching lever 13 in the front-rear direction along the guide groove 24a of No. 4, the operation lever 20 is operated by the cutter with the rear opening / closing cover 12 closed at the operation position A via the operation wire 20, the link mechanism 18 and the engagement pin 17. In response to the straw cutting work, and at the operation position B, the rear opening / closing cover 12 is opened to perform the straw discharging work outside the machine,
Compared to the conventional configuration in which the rear opening / closing cover is opened and closed by the forward / backward movement of the connecting rod responsive to the switching lever, the operation
A transmission path from the rear opening / closing cover 12 to the rear opening / closing cover 12 can be easily secured even in a small space.
The malfunction caused by the opening / closing operation 2 can be reduced.

As shown in FIGS. 7 (a) and 7 (b), the upper edge of the rear opening / closing cover 12 has a stepped shape corresponding to the lower edge 12b of the fixed cover 12a bent inward. The contact surface 25 is bent to form the contact surface 25 in the closed state of the rear opening / closing cover 12, that is, at the time of cutting the straw with a cutter (not shown).
The close contact with b prevents the dust of the waste generated by the cutting by the cutter from spouting out of the machine.

Since the present invention is configured as described above,
When performing the waste cutting operation with a cutter, if the switching lever 13 is tilted to the operation position A and locked in the guide groove 24a, the rear opening / closing cover 12 holds the closed state. When the switching lever 13 is positioned at the operation position B, the operation wire 20 is pulled and the link mechanism 18 is rotated, and the engagement pin 17 fitted into the long hole 18a of the link arm 19 is simultaneously rotated. The pivot 14 also rotates, the rear opening / closing cover 12 is opened rearward, and the operation is switched to the operation of discharging straw to the outside of the machine.

In the switching of the work contents by opening and closing the rear opening / closing cover 12, when the bundling work of the straw is performed by the knotter, the rear opening / closing cover 12 is detached and the opening of the threshing unit 10 is opened. You will need to install a notter.

The procedure for removing the rear opening / closing cover 12 will now be described with reference to FIG. 4. First, the mounting of the left bracket 15 for supporting the left projecting end 14a of the pivot shaft 14 in the long hole 16 will be described. The bolt and nut 15c are removed to release the left bracket 15 from being fixed. Then, after the left protruding end 14a is extracted from the long hole 16, the pivot shaft 14 is slid in the direction of the arrow together with the rear opening / closing cover 12.
At this time, the right protruding end 14b of the pivot shaft 14 comes out of the long hole 16 of the right bracket 15 supporting the same,
The engagement pin 17 also comes out of the long hole 18a of the link arm portion 19 forming the link mechanism 18, and the removal of the rear opening / closing cover 12 is completed. Then, the rear opening / closing cover 12
By mounting a notter (not shown) on the rear surface of the threshing unit 10 opened by the removal, the operation can be promptly shifted to the binding and discharging operation of the straw. Accordingly, the work of attaching and detaching the rear opening / closing cover 12 can be easily performed only by removing and attaching the left bracket 15, and the number of parts required for removal is small. Can be prevented beforehand.

FIG. 7B shows another example of the bracket 15. In this example, the mounting surface 15 ′ a of the bracket 15 ′ extends in the axial direction of the pivot shaft 14. By notching the long hole 16 'to a length corresponding to the length of the left and right protruding ends 14a, 14b of the pivot shaft 14, the mounting surface 15' can be removed without removing the bracket 15 'itself.
a by simply loosening the stop bracket 26 for closing the end portion of the long hole 16 ′ in the temporary fixing state, the pivot shaft 14 is moved to the bracket 1.
The rear opening / closing cover 12 can be more easily attached and detached.

[0017]

In summary, the present invention provides a rear opening / closing cover which is provided at the rear of a threshing section mounted on a traveling machine body and which is provided with a cutter for cutting threshed waste and which can be opened to the rear of the machine body. In the combine which is pivoted behind the cutter via the left and right brackets provided on the side and switches between the straw cutting work with the cutter and the straw discharging work outside the machine by opening the rear opening / closing cover. On the upper edge of the rear opening / closing cover, there is provided a link mechanism for extending and closing the protruding ends to the left and right brackets, respectively, and for opening and closing the rear opening / closing cover located near one of the protruding ends. The pivot shaft is connected to the link mechanism via an engaging pin attached to the pivot shaft so that the pivot shaft can be inserted into and removed from the link mechanism. Gopi When installing and removing the rear opening / closing cover, it is a simple structure, but it does not require a large number of parts. The present invention has a useful new effect that the inspection and maintenance work of the cutter can be easily performed.

[Brief description of the drawings]

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

FIG. 2 (a) is a partially omitted side view of a combine.
(B) is a rear view partially omitted from the above.

FIG. 3 is a plan view of a main part.

FIG. 4 is a rear view of a main part showing a mounting support state of the pivot shaft and the bracket.

FIG. 5A is a plan view of a lever guide provided in a driving operation unit. FIG. 2B is a side view of a main part showing a structure of a switching lever locked in a guide groove of the lever guide of the above.
(C) is an explanatory diagram of a main part operation showing an interlocking state of the link mechanism and the rear opening / closing cover.

FIG. 6 is an enlarged plan view of a main part showing attachment of a link mechanism, a pivot, and a rear opening / closing cover.

FIG. 7A is an operation explanatory view showing a closed state of a rear opening / closing cover. (B) is an operation explanatory view showing the same open state.

FIG. 8A is a perspective view of a bracket. (B) is a perspective view of a bracket of another example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Threshing part 12 Rear opening / closing cover 14 Pivot shaft 15 Bracket 17 Engagement pin 18 Link mechanism

Claims (2)

[Claims] 1. A threshing unit mounted on a traveling body,
A cutter for cutting threshed waste is provided, and a rear opening / closing cover that can be opened to the rear of the machine is pivotally mounted behind the cutter via left and right brackets provided on the machine frame side. In a combine configured to switch between the cutting operation and the discharge operation of the straw to the outside by opening the rear opening / closing cover, a pivot shaft for fitting the protruding ends into the left and right brackets at the upper end edge of the rear opening / closing cover, respectively. A link mechanism is provided alongside and near one of the protruding ends to open and close the rear opening / closing cover, and the pivot shaft is inserted into the link mechanism via an engaging pin provided therewith. A rear opening / closing cover in a combine, wherein the rear opening / closing cover is detachably connected and an engagement pin is inserted into / removed from the link mechanism by an axial sliding operation of the pivot shaft. Mounting structure. 2. The sliding operation of the pivot shaft for attaching and detaching the rear opening / closing cover is performed after removal of a bracket into which the other protruding end of the pivot shaft is inserted. Mounting structure of the rear opening / closing cover in the combine.