JPH10117563A - Cover structure for thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the cover structure of a thresher capable of excellently performing the maintenance operation of a straw cutting blade or the like by an openable and closable back side cover. SOLUTION: A threshing chamber case 6 for which a threshing cylinder 6K is pivotally disposed between an entrance side plate and an exit side plate and the upper part is covered with a top plate 6c is provided vertically turnably so as to open a threshing port side with a supporting point shaft 31 on a back side as a rotation center to a lower case 30, the back side cover 10 is attached to the back side end part of the top plate 6c turnably through a turning part 11 and the other side of the turning part 11 is freely attachably and detachably fixed to an attaching part 31b on the side of the threshing chamber case 6. Thus, the back side cover 10 is turned as well when the threshing chamber case 6 is turned with the supporting point shaft 31 as a center and the back side cover 10 is made individually turnable to the threshing port side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover structure for a threshing machine that can be mounted on a combine or a harvester.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Utility Model Laid-Open Publication No. 2-63630, a lower case is provided with a handling chamber case in which a handling cylinder is suspended between an entrance side plate and an exit side plate and the upper portion thereof is covered by a top plate. A threshing machine has been already known in which a handling shaft is rotated upward so that a handling port side is opened about a fulcrum shaft as a center of rotation to perform cleaning, maintenance work, and the like in a handling chamber. In addition, this threshing machine attaches a straw cutting blade provided in a handling room to a handling room case, and performs maintenance work such as replacement of the straw cutting blade by opening and closing a cover attached to an upper portion of a lower case via a rotating portion. The hand is inserted through an opening formed by opening the threshing machine toward the back side.

[0003]

However, the threshing machine having the structure disclosed in the above-mentioned publication requires a special retreat structure since the back opening / closing cover hinders the upward movement of the handling room case. In addition, when performing maintenance work such as replacement of the straw cutting blade, the opening / closing cover that is opened toward the back side obstructs the replacement work of the straw cutting blade performed from the control unit side, and also has a large opening. There is a problem that it is difficult to work freely due to restrictions.

[0004]

A cover structure of a threshing machine according to the present invention for achieving the above object is provided with a handling room case in which a handling cylinder is mounted between an inlet side plate and an outlet side plate and the upper part thereof is covered with a top plate. In a threshing machine provided so as to be rotatable up and down so that the handling port side is opened with the fulcrum shaft on the back side as a rotation center with respect to the lower case, a back cover is turned on the back end of the top plate. And the other of the rotating portions is removably fixed to the mounting portion on the side of the handling room case, so that the back cover can be rotated when the handling room case rotates about the fulcrum shaft. Are also rotatable, and are configured to be rotatable independently with the back cover facing the opening.

The back cover is detachably fixed to a mounting portion integrally provided on a mounting arm extending from the fulcrum shaft to support the handling chamber case.

[0006]

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 cereal stems pass. Around the fulcrum shaft 31 supported by the support frame 31a at the upper part, the handle shaft 3d is provided so as to be swingable up and down so as to open the handle 3d side, and along the lower case 30 side along the handle 3d. The feed chain 3F is stretched, and the holding rail 3K facing the conveying surface of the feed chain 3F is attached to the handling room case 6.
It is mounted and supported. 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 is provided between the inlet side plate 6a and the outlet side plate 6b and the lower case 30 and communicates with the opening 3d.
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 handling cylinder shaft 3 of a handling 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 in front of and behind 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.

In addition, 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 outside of the rear side wall frame 6e at the counter opening side, that is, the rear side end, the rear side cover 10 having substantially the same length as the top plate 6c is connected to the rear side cover 10 via a plurality of rotating parts (hinge parts) 11. The back cover 10 is rotatably mounted and supported, and the width of the back cover 10 is further extended to the back side than the back side wall 3e of the threshing machine 3, so that the threshing machine 3
To cover the space formed by the operation part 4 to the Glen tank (grain storage part) 5 and the like as wide as possible from above, so that the joint part between the handling room case 6 and the lower case 30 or the back wall is minute It is configured such that dust that blows out or scatters from a small gap or the like is prevented from rising, and the dust does not reach the control unit 4 side.

The back 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 back cover 10 with an attachment (an attachment screw) 13. When the mounting screw 13 is loosened, as shown by a 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 into 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. 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 handle wall frame 6d.

On the other hand, the operating 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 gripper 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 that is clamped and transported by the feed chain 3F and the clamping rail 3K in the threshing operation posture of the handling room 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 constructed 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.

1) Then, the handling room case 6 is moved up to
When the maintenance work in the threshing machine 3 is performed by opening the upper part of the threshing machine 3, the guide groove 65 of the mounting bracket 60 for mounting the handle cover 63 as shown by the dotted line of the lock lever 7 L.
When it is turned upward along the hook and locked in the hook-shaped groove at the upper end, the lock piece 70 releases the engagement with the lock pin 71. In this state, the handling chamber case 6 is lifted up with both hands. It can be moved upward and opened to switch to the maintenance posture.

When the handling chamber case 6 is moved up about the fulcrum shaft 31 as described above, 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 of the lower case 30 via the stopper 90 to support and fix the handling chamber case 6 and to easily maintain the maintenance position in which the upper part of the handling chamber 3a is largely opened. In addition, since the switching operation can be reliably performed, the maintenance work in the handling room 3a can be performed satisfactorily.

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
Therefore, it can be easily and reliably fixed to the thrusting posture, and good threshing can be performed again.

In such a work, the top plate 6c is provided with an openable and closable back cover 10 extending to the back side of the threshing machine 3 at the time of threshing work. The space formed between the threshing machine 3 and the adjacent control section 4 or the Glen tank 5 can be widely covered from above, so that dust from blowing out or scattering from the threshing machine can be prevented well and the driving work can be performed. It can be performed without hindrance. When the handling room case 6 is turned around the fulcrum shaft 31, the back cover 10 turns together with the back cover 10 without hindering its rotation, despite being extended to the back. Therefore, the rotation of the handling room case 6 can be performed smoothly, and the maintenance work in the handling room 3a can be performed quickly.

Further, the rear cover 10 uses the mounting arm 31b for supporting the other side of the hinge portion 11 to support the handling room case 6, and the mounting arm 31b is attached to the mounting arm 31b at a position as far away from the hinge portion 11 as possible. Also, since the rear cover 10 is detachably mounted with the mounting screws 13, the rear cover 10 can be stably mounted and supported while forming the rear cover 10 as wide as possible. Can be satisfactorily prevented, and the mounting structure of the rear cover 10 can be made simple and inexpensive.

When the maintenance work of the straw cutting blade 15 and the transmission mechanism installed below the rear cover 10 is performed, the rear cover 10 is loosened with the mounting screw 13 and the mounting piece 12 is removed.
The space is wide open by freely unlocking and rotating the hinge portion 11 toward the upper port side around the hinge portion 11 to freely insert a hand from the control unit 4 or the grain storage unit 5 side. Thus, replacement work of the side straw cutting blade 15 and the like and other maintenance work can be performed simply and efficiently.

[0028]

According to the present invention, the following effects can be obtained by the above-described configuration. According to the invention of claim 1,
When the handling room case rotates about the fulcrum axis, the back cover rotates integrally without hindering its rotation,
In addition to smooth rotation of the handling room case, maintenance work in the handling room can be performed quickly, and when performing maintenance work on the straw cutting blade and the transmission mechanism located below the space, the rear cover is used. Can be independently rotated toward the upper port side, so that the replacement work of the straw cutting blade or the like performed from the control unit side can be performed simply and efficiently.

According to the second aspect of the present invention, the rear cover uses the mounting arm supporting the other side of the rotating portion to support the handling chamber case, and the mounting arm is provided with a portion as far away from the rotating portion as possible by the mounting tool. Since the rear cover can be attached detachably, it can be stably mounted and supported even if the rear cover is formed to be wide, and it is possible to prevent chatter and noise due to the vibration of the aircraft, and to prevent the rear cover. The attachment of the side cover can be made simple and inexpensive.

[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 3E back wall 6 handling room case 6a inlet side plate 6b outlet side plate 6c top plate 6d handling opening wall frame 6K handling cylinder 7 locking mechanism 7L lock lever 9 support mechanism 9L operation lever 10 back cover 11 Rotating part (hinge part) 12 Mounting part (mounting piece) 13 Mounting tool (mounting screw) 15 Straw cutting blade 30 Lower case 31 Support shaft 31b Mounting arm

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

Claims (2)

[Claims] 1. A handling room case in which a handling cylinder is suspended between an entrance side plate and an exit side plate and the upper portion thereof is covered with a top plate, and the handling side is opened with a fulcrum shaft on the back side of the lower case as a rotation center. In the threshing machine provided so as to be vertically rotatable as described above, a rear cover is rotatably attached to a rear end of the top plate via a rotary portion, and the other of the rotary portions is connected to the handling chamber case side. Detachably fixed to the mounting part, the back cover also rotates together with the handling chamber case around the fulcrum axis, and the back cover can rotate independently toward the handling port side A cover structure for a threshing machine characterized in that: 2. A cover structure for a threshing machine according to claim 1, wherein the back cover is detachably fixed to a mounting portion integrally provided on a mounting arm extending from the fulcrum shaft to support the handling chamber case.