JPH10117564A - Threshing chamber opening/closing device for thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the threshing chamber opening/closing device of a thresher capable of preventing an erroneous operation or the like by providing the operation lever of the supporting mechanism of a threshing chamber case or a top plate on the inner side of a threshing port cover. SOLUTION: The threshing chamber case 6 for which a threshing cylinder 6K is pivotally disposed between an entrance side plate and an exit side plate 6b and the upper part is covered with the top plate 6c is formed, the threshing chamber case 6 or the top plate 6c is made vertically turnable with a supporting point shaft 31 as a center and the supporting mechanism 9 for holding the upward movement posture of the threshing chamber case 6 is provided. Also, the threshing chamber case 6 or the top plate 6c is provided with the threshing port cover 63 for covering the upper part of a feed chain provided along a threshing port 3d and the operation lever 9L for performing the releasing operation of the supporting mechanism 9 is integrally provided on the inner side of the threshing port cover 63.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening and closing device for a handling room in a threshing machine which can be mounted on a combine or a harvester.

[0002]

2. Description of the Related Art Conventionally, a handling room case in which a handling cylinder is rotatably mounted on an interior shaft is rotated upward around a fulcrum shaft provided in a lower case so as to open a handling side, thereby obtaining a handling room. Threshing machines that perform cleaning and maintenance work are already known, and the handling room case of such a threshing machine releases the locking means provided between the threshing machine and the lower case when performing maintenance work. Then, switching from the threshing posture to the upward movement posture (maintenance posture) in which the handling room case is lifted and rotated, and the rod-shaped support member stored between the two is pulled out, and this is pulled out of the handling room case and the lower case. The maintenance work is performed in a state where the handling room case is held in the upward movement posture by being supported by being stretched therebetween.

[0003]

However, in the above-mentioned conventional configuration, the support member stored and installed on the back side of the threshing machine is pulled out with the handling room case raised, and the positioning set is set between the lower case and the lower case. When the maintenance room case is returned to the threshing position at the end of maintenance work, and when the downward movement is performed, insert the other hand into the back while supporting the handling room case with one hand, and remove the support member. There are drawbacks such as the need to perform the downward movement of the handling room case while releasing and storing, and a complicated operation for rotating the handling room case is required, and the working posture becomes unstable.

[0004]

In order to achieve the above object, a handling room opening / closing apparatus for a threshing machine according to the present invention comprises a handling room in which a handling cylinder is mounted between an entrance side plate and an exit side plate and the upper part thereof is covered with a top plate. In a threshing machine in which a case is formed and the handling room case or the top plate is vertically rotatable about a fulcrum shaft,
In addition to providing a support mechanism for maintaining the upward movement posture of the handling room case, a handling cover is provided on the handling room case or the top plate so as to cover a feed chain provided along the handling opening. On the other hand, an operation lever for releasing the support mechanism is integrally provided.

In addition, the support member of the support mechanism is pivotally supported on the handling room case or the top plate, and the supporting member is urged toward the engaging portion provided on the fixed side, so that the handling room case or the top plate is urged. It is characterized in that the support member is automatically engaged with the engagement portion in the upward movement position of the plate.

Further, the present invention is characterized in that a pivot portion of a support member of the support mechanism is provided close to the fulcrum shaft.

[0007]

An embodiment of the present invention will be described with reference to the drawings. A shown in FIG. 1 is a combine, and the combine A has a reaping unit 2 mounted in front of a machine (traveling body) 1 having a crawler-type traveling device 1a so as to be able to move up and down.
In the rear part, a threshing machine 3 according to the present invention is mounted on the left side of the machine base 1, and a control section 4 including a control panel section 4a and a seat 4b is disposed on the right side, and behind the control section 4 A grain tank 5 equipped with a discharge auger 5a is installed, and the culm cut in the cutting section 2 is supplied to the threshing machine 3 for threshing. The straw is accommodated in the Glen tank 5, and the straw is processed and discharged by a straw processing unit 3S installed at the rear of the threshing machine 3 so that a series of harvesting operations can be smoothly performed.

The threshing machine 3 includes a handling room 3a and an entrance side plate 6a.
A handling room case 6 in which a handling cylinder 6K is rotatably mounted on an interior shaft between the handle 6K and the outlet side plate 6b, and a receiving net 3 above the swing sorting body 3b.
The main body frame (lower case) 30 with the extension c is formed so as to form a handle 3d through which the grain stalks pass. The lower case 30 is provided so as to be swingable up and down so as to open the handle 3d side around the fulcrum shaft 31 supported by the support frame 31a on the upper side (counter handle side).
A feed chain 3F is stretched along the lower side of the handle 3d, and a holding rail 3K facing the transfer surface of the feed chain 3F is attached to and supported by the handle chamber case 6. Further, below the swing sorting body 3b, a first gutter 32 in which a spiral body for transferring the grain toward the frying cylinder 3Y is provided.

A supply port 33 communicating with the opening 3d is provided between the inlet side plate 6a and the outlet side plate 6b and the lower case 30.
And a discharge port 33a, and the handling chamber case 6 is fixed to the lower case 30 so as to be detachable from the lower case 30 via a lock member 70 of a lock mechanism 7 to be described later. In addition, an urging member 7a composed of a damper cylinder or the like is interposed between the handling room case 6 and the lower case 30 to release the lock of the lock mechanism 7 to enable the handling room case 6.
When opening the door, the handling chamber case 6 is urged in the opening direction to easily lift and rotate.

The handling room case 6 is provided with a handle cylinder shaft 3 of a handle cylinder 6K.
The inlet side plate 6a and the outlet side plate 6b that support the shaft 0a are connected by a top plate 6c at the upper part, and the handling side is the handling wall frame 6.
d, and the rear side is connected by the rear side wall frame 6e to form a housing frame whose lower part is opened. And FIG.
As shown in (B), the inlet side plate 6a and the outlet side plate 6b are formed of a double wall, into which the mounting arm 31a rotatably fitted and mounted on the fulcrum shaft 31 is inserted. At the same time, the mounting arm 31a is clamped and fixed between the double walls by three mounting screws 6N as shown. still,
One of the three mounting screws 6N is made to protrude rearward from the outlet side plate 6b, and a stopper 90 of the support mechanism 9 described later is provided.
Is also used as a support pin (pivot portion) 6P that pivotally pivots.

As shown in FIGS. 3 and 4, a lock mechanism 7 provided at the front and rear of the handling chamber case 6 is provided on the handling wall frame 6d.
Mounting brackets 60, 60 formed of inverted U-shaped plate-like pieces in a side view are provided at positions where the two lock levers 7 </ b> L are located, and screw holes (mounting portions) 61 provided in the mounting bracket 60 are provided. Through a mounting screw 62, an opening cover 63 formed in a L-shape in a side view with a synthetic resin material is detachably attached, and the feed chain 3 is attached by the opening cover 63.
The upper part of F and the holding rail 3K is covered with the same width as the top plate 6c. A guide piece 63G for guiding and guiding the grain stalk in contact with the base of the stock is integrally formed at the rear end (the end of the grain stalk transport direction) of the lower edge portion of the mouthpiece cover 63 so as to integrally project therefrom. The guide piece 63G wraps around the start end of the straw passage side plate 39 that covers the side of the culm processing section 3S following the handle 63 and smoothly transfers the grain culm in this part on the root side. By doing so, it is possible to satisfactorily prevent the grain stem from being caught or generating excessive transport resistance at the start end of the straw passage side plate 39.

An inverted L-shaped guide groove 65 capable of operating and guiding the lock lever 7L is formed in the slope of the mounting bracket 60, and the guide groove 65 is formed in a corresponding portion of the opening cover 63. The lock lever 7L, which has a wider through hole 66 than that formed and is rotatably supported at the upper part on the handle side of the handling chamber case 6, can be vertically rotated while the guide groove 65 and the through hole 66 are inserted. With this configuration, it is possible to prevent the through-hole 66 of the mouth opening cover 63 made of a synthetic resin material from being worn by contact with the lock lever 7 </ b> L, so that the guide operation can be accurately performed by the mounting bracket 60. If necessary, the handle cover 63 may be attached to the middle of both mounting brackets 60 on the handle wall frame 6d.
a is provided to reinforce the mounting.

As shown in FIG. 2, the top plate 6c is
At a position close to the outer side of the rear side wall frame 6e at the counter-handle side, that is, the rear side end, a top plate cover 10 having substantially the same length as the top plate 6c is connected via a plurality of rotation support portions (hinge portions) 11. The top plate cover 10 is mounted so as to be rotatable, and the width of the top plate cover 10 is further extended to the back side than the back side wall 3 e of the threshing machine 3. By covering the formed space as widely as possible from above, the dust that blows out or scatters from the joint between the handling room case 6 and the lower case 30 or the minute gap in the back side wall is prevented from flying up. It is configured not to reach the control section 4 side.

The top plate cover 10 is detachably attached to an attachment portion (attachment piece) 12 provided by using an attachment arm 31b located at the front and rear of the top plate cover 10 at a lower position. When the mounting screw 13 is loosened, the top plate cover 10 is turned around the hinge 11 toward the upper opening as shown by the dotted line in FIG.
The space at the site e can be widely opened. In this state, the straw cutting blade 15 located in the space portion
Also, maintenance work such as a transmission mechanism (not shown) can be performed satisfactorily. The straw cutting blade 15 is connected to the end of the trajectory of the receiving net 3c and connected to the
In this embodiment, the straw cutting blade 15 is detachably attached to the attachment frame 30 a formed on the upper side wall 3 e of the handling room case 6 by the attachment screw 16. Like that.

In such a threshing machine 3, the lock mechanism 7 is provided with an inlet side plate 6 a and an outlet side plate 6 of the handling room case 6.
2 and 3 is configured between the lower case 30 and the lower case 30. That is, the lock mechanism 7 has a lock pin 71 projecting from the lower case 30 at a position on the back side of the handling chamber 3a, and has a hook-shaped engaging portion 70a which is removably engaged with the lock pin 71. The lock piece 70 formed in the shape of a letter is rotatably supported on a support shaft 72 protruding from the side surface of the entrance side plate 6a and the exit side plate 6b of the handling room case 6, and the lock piece 7
0 and the lock lever 7L via a link rod mechanism 73.

Thus, when the lock lever 7L is positioned below the guide groove 65 in a solid line, the lock piece 70 engages with the lock pin 71 to fix the handling chamber case 6 to the lower case 30. In the threshing operation posture (downward movement posture), and the lock lever 7L is operated to rotate upward as shown by the dotted line, and is locked in the hook-shaped groove at the upper end of the guide groove 65. 70 is the lock pin 7
1, the handling room case 6 can be lifted up by hand and moved up and opened to be switched to a maintenance posture (upward movement posture).

In the above-mentioned maintenance posture, the support member (stopper) 90 provided on the handling room case 6 of the support mechanism 9 is automatically engaged with the stopper pin (engagement portion) 91 projecting from the lower case 30. By engaging, the handling room 3
It can be easily and reliably supported in a maintenance posture in which the upper part of a is largely opened. Also,
The release operation of the support state of the handling room case 6 can be easily performed from the handling side by connecting the operation lever 9L provided on the handling side and the stopper 90 via a connecting member (wire) 99. I can do it.

That is, the support mechanism 9 is configured as shown in FIGS. The stopper 90 is in a hanging posture in a state of being pivotally supported by the support pin 6P, and the stopper pin 91 is provided inside the lower end of the plate-like rod.
A spring 95 which is formed by recessing a locking portion 92 which can be engaged with the shaft, has an arc-shaped operation groove 93 centered on the support pin 6P at the upper end portion, and is attached to a proper position of the outlet side plate 6b.
Accordingly, the lower side of the support pin 6P of the stopper 90 is pulled and urged in the engagement direction.

A hook-shaped hook 99a formed at the end of a wire 99 provided on the operation lever 9L is slidably inserted in the operation groove 93 in the direction of the long hole. Is pulled by a spring 96 attached to the lower case 30 side, and the stopper 90 is held by the spring 96 and the wire 99 in a support standby posture indicated by a solid line in FIG. Note that one end of the wire 99 on the outer side is fixed to the outlet side plate 6b, and the other end is fixed to an optional member of the opening wall frame 6d.

On the other hand, the operation lever 9L is provided at the center of the front-rear width inside the handle cover 63 (FIG. 4), and at the center of the handle rail 3K attached to the handle wall frame 6d above the feed chain 3F. To the mounting frame (not shown) provided appropriately from the rail support frame 67 or the mounting bracket 60 described above or the handling wall frame 6d, and the operation lever 9L is normally rotated in a downward posture. In the posture, it does not protrude from the lower end of the opening 63.

As a result, the operation lever 9L is installed on the inside of the handle cover 63 on the handle side, and transports the grain culm which is clamped and transported by the feed chain 3F and the clamping rail 3K in the threshing operation posture of the handling chamber case 6. Of the human body, clothes, etc. due to the operation lever 9L protruding out of the machine without being obstructed, and the lock mechanism 7 being released to move the handling room case 6 upward. In this case, the operation of the support mechanism 7 can be easily performed from below the widely opened handle opening cover 63, and the operation lever 9L is inadvertently operated in the maintenance posture in which the handling room case 6 is moved upward. I try not to.

The threshing machine 3 configured as described above is shown in FIG.
As shown in FIG. 3, the lock lever 7L and the operation lever 90
In the threshing operation position shown by a solid line, the lock piece 70 of the lock mechanism 7 is engaged with the lock pin 71 by the lock lever 7L, and the handling chamber case 6 is fixed to the lower case 30. The threshing work can be performed satisfactorily because it is properly fixed. At this time, the stopper 90 of the support mechanism 9 is supported in a suspended manner by the wire 99 and the spring 95 without contacting the stopper pin 91 in a state of being pivotally supported by the support pin 6P. It is supported in a proper support standby posture without generating a contact noise or the like due to the vibration of the airframe.

Then, the handling room case 6 is moved upward to handle the handling room 3a.
When the maintenance work inside the threshing machine 3 is performed by opening the upper part of the threshing machine 3, the lock lever 7L is rotated upward along the guide groove 65 of the mounting bracket 60 for attaching the handle cover 63 as shown by a dotted line. When the lock member 70 is engaged with the hook-shaped groove at the upper end thereof, the lock piece 70 releases the engagement with the lock pin 71. In this state, the handling room case 6 is lifted up with both hands and moved upward to open the maintenance posture. Can be switched over.

When the handling chamber case 6 is moved up about the fulcrum shaft 31 in this manner, the stopper 90 of the support mechanism 9 is displaced upward while being pressed against the stopper pin 91 by the spring 95. In the maintenance posture position of the handling room case 6, the locking portion 92 is
Is automatically engaged with the stopper pin 91 by the urging force and the own weight, and the handling room case 6 is supported and fixed to the lower case 30 through the stopper 90, and the maintenance room 3a is easily opened to the maintenance posture in which the upper part is largely opened. In addition, since the switching can be reliably performed, the maintenance work can be performed satisfactorily.

At this time, as shown in FIG. 3, the stopper 90 is pivotally displaced to the supporting posture, and as a result, the wire 99 attached to the handling room case 6 has its hook portion 99a having the operating groove of the stopper 90. The hook 99a is slid in the other end and is released to the other end.
By being pulled at 6, the wire 99 is prevented from being bent, and the next support release operation is performed without any trouble. Further, the stopper 90 is provided with a pivot portion (support pin) 6P at a position close to the fulcrum shaft 31 in the handling room case 6, so that the length of the stopper 90 can be increased without increasing the length of the stopper 90. Is compactly installed at the back side portion, so that the handling room case 6 can be accurately supported in the maintenance posture without obstructing the transport of the grain stalk or obstructing other mechanisms.

When returning the handling room case 6 to the original threshing work posture at the end of the maintenance work,
The operator pulls the operation lever 90 exposed inside the handle cover 63 with the other hand while supporting the handle chamber case 6 with one hand from the handle side, thereby applying the springs 95 and 96 via the wires 99. The stopper 90 is detached from the stopper pin 91 to easily release the support of the support mechanism 9, and at the same time, the hand is released from the operation lever 90 to support the vicinity thereof, and the handling room case 6 is stably lowered with both hands. Then, when the handling room case 6 is moved down to a predetermined position, the lock levers 7L, 7L on both sides are turned downward along the guide grooves 65, whereby the lock mechanism 7 is rotated.
Of the handling room 6 by the lock piece 70 of the lower case 3
In addition to being able to easily and reliably fix the thruster to the thrusting posture, maintenance work can be performed efficiently, and good threshing work can be performed again.

In such work, the operation lever 9L
Is provided so as to be operable inside the mouth cover 63 without being exposed from the handle cover 63, so that the operation of the operation lever 9L does not hinder the conveyance of the grain stem conveyed by the feed chain 3F in the threshing operation posture. It is possible to prevent the contact of the human body or the catch of clothes or the like due to the protrusion outside, and also to prevent the operation lever 9L from being accidentally operated even in the maintenance posture in which the handling room case 6 is moved upward. There are advantages such as possible.

Further, the operation lever 9L is connected to the handle cover 6
Since it is provided at the substantially central portion of the front and rear width inside 3, the right-handed and left-handed operators can easily operate with good workability. When the lock lever 7L is inserted into the guide groove 65 of the mounting bracket 60, the lock lever 7L protrudes outward from the opening 63 through the outside of the opening 63 without forming a through hole 66 in the opening 63. May be provided. Further, in the present embodiment, the threshing machine 3 which performs maintenance work by rotating the handling cover 63 up and down in this embodiment is shown, but the handling room case 6 is not limited to this, and the handling chamber case 6 is a fixed machine frame. In this state, a lock mechanism 7 is provided so that the top plate 6c is vertically rotatably fixed to the fixed-side machine frame.
The present invention can also be applied to a threshing machine in which c is opened and closed to perform maintenance work in the handling room 3a.

[0029]

According to the present invention, the following effects can be obtained by the above-described configuration. According to the invention of claim 1,
An operation lever that releases the support mechanism that holds the upward movement of the handling room case or top plate is provided inside the handle cover that covers the handle of the threshing machine, so that the lever protrudes from the surface of the handle cover. In addition to preventing the contact of the human body and catching of clothes, etc., the lever can be seen well and the erroneous operation of the lever can be prevented even if it does not protrude outward in the maintenance posture where the handling room case or the top plate is moved up. Can be prevented.

According to the second aspect of the present invention, when the handling room case or the top plate moves upward, the supporting member biased and supported in the engaging direction automatically engages with the fixed-side engaging portion. Can be easily and accurately supported in the maintenance work posture, and the maintenance work can be performed efficiently.

According to the third aspect of the present invention, by providing the pivot portion of the support member close to the fulcrum shaft, the support mechanism can be compactly installed at the back side portion without increasing the length of the support member. In addition, the maintenance work in the threshing machine can be easily performed without being hindered by the support member.

[Brief description of the drawings]

FIG. 1 shows a combine equipped with a threshing machine according to the present invention, wherein (A) is a side view. (B) is a plan view.

FIG. 2 is a front view partially showing a main part of the threshing machine in section.

FIG. 3A is a rear view partially showing a main part of the threshing machine in section. (B) is a plane sectional view showing the configuration of the outlet side plate and the support mechanism.

FIG. 4 is a perspective view showing a mounting configuration of an opening cover and an operation lever.

[Explanation of symbols]

 Reference Signs List 3 threshing machine 3a handling room 3d handling opening 3F feed chain 3K holding rail 6 handling room case 6a inlet side plate 6b outlet side plate 6c top plate 6d handling opening wall frame 6K handling cylinder 6P support pin (pivot part) 7 lock mechanism 7L lock lever 9 Support mechanism 9L Operation lever 15 Straw cutting blade 30 Lower case 31 Support shaft 60 Mounting bracket 63 Handle cover 90 Stopper (support member) 91 Stopper pin (engagement part) 95 Spring

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toru Itamochi 667 Idaicho, Higashiizumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd.

Claims (3)

[Claims] 1. A handling room case is formed between an entrance side plate and an exit side plate, and a handling room case is formed to cover an upper portion thereof with a top plate, and the handling room case or the top plate is vertically rotated about a fulcrum shaft. In the enabled threshing machine, a support mechanism for holding the upward movement posture of the handling room case is provided, and a handle cover for covering above a feed chain provided along the handling hole in the handling room case or the top plate is provided. A handle opening and closing device for a threshing machine, wherein an operating lever for releasing the support mechanism is integrally provided inside the handle cover. 2. A support member of a support mechanism is pivotally supported on a handling room case or a top plate, and the support member is urged toward an engaging portion provided on a fixed side to thereby provide a handling room case or a top plate. The handling room opening / closing device for a threshing machine according to claim 1, wherein the support member is automatically engaged with the engagement portion in the upward movement position of the plate. 3. The handling room opening and closing device for a threshing machine according to claim 1, wherein a pivot portion of the support member of the support mechanism is provided close to the fulcrum shaft.