JPH07274677A - Threshing apparatus - Google Patents

Abstract

PURPOSE:To provide a threshing apparatus with excellent maintainability. CONSTITUTION:This threshing apparatus is obtained by installing locking means for engaging and fixing the side of an upper threshing case in a closed position thereof to three positions of a front position of a threshing chamber, a rear position thereof and a position on the side of a threshing and waste straw conveying chamber, constituting respective locking means of hook-shaped locking members 21 and 22 and engaging members engaged with the locking members 21 and 22 and arranging a locating means capable of respectively distributing and arranging positional regulating members 37, comprising a pair of platy materials arranged in a state of opposite faces with an interval in the front and rear directions and a front and rear positional regulating members 36 comprising a platy member having a width in the front and rear directions corresponding to the interval of both the front and rear positional regulating members 37 to the side of the upper threshing case and the side of the lower threshing case 16 and engaging the front and rear positional regulating members 36 and 37 with the closing operation of the side of the upper threshing case so as to carry out the location in the front and rear directions on the side of the upper threshing case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention forms a handling room and a threshing-discharging-and-discharging-wall transporting room at the rear of the handling room, and an upper machine body to which a handling barrel is attached is provided on the opposite side of the handling barrel from the handling mouth. The present invention relates to an automatic thresher attached to a machine body so as to be positioned and swing up and down around an axis parallel or substantially parallel to the axis of rotation of the handling cylinder.

[0002]

2. Description of the Related Art The above-mentioned automatic threshing machine is, for example, the actual machine shovel 59-.
As disclosed in Japanese Patent No. 150231, when cleaning or inspecting the handling room, it was considered that opening and closing of the handling room and moving of the handling body can be performed easily and quickly only by swinging the upper body. It is a thing. In this kind of automatic thresher,
Conventionally, since it is necessary to secure a transport path for carrying out the threshing discharge straw from the inside of the machine body to the rear, it is not possible to provide a means for connecting and fixing the free end side of the upper machine body and the machine body behind the handling room. , Only a pair of locking means for separately connecting and fixing the front wall portion for the handling room and the rear wall portion for the handling room of the upper body to the body of the body are provided, and the upper body is provided only at two positions, the front side and the rear side of the handling room. It was designed to be closed and fixed to the machine body, which had the following inconveniences.

[0003]

That is, at the time of work, vibrations due to threshing load and rotation of the handling cylinder are likely to occur in the upper machine body, especially in the rear end side of the machine body, and this trouble can be avoided. Thus, it was necessary to make the strength and weight of the upper fuselage extremely large. An object of the present invention is to make it possible to avoid the vibration of the upper body while making it lighter, and to make it possible to advantageously open the handling room in terms of the operation surface and the like.

[0004]

A characteristic structure of the present invention is that in the automatic threshing machine described above, on the free end side of the upper body,
And, a frame for connecting the upper body portion located on the rear end side of the body from the rear wall portion for the handling room, is provided in the body body in a state of being bent so as to bypass the threshing discharge straw transport path, A first lock for connecting and fixing the front wall portion for the handling room of the upper machine body to the machine body when the upper machine body is closed;
Each of a second lock tool for connecting and fixing the rear wall portion for the handling room to the machine body and a third lock tool for connecting and fixing the upper machine body part to the frame is releasably provided, and the first lock tool is provided. At least two of the lock tool, the second lock tool, and the third lock tool are interlockingly connected to the operation tool in a state in which the lock is released by operating one operation tool. The action and effect are as follows.

[0005]

[Effect] Even if the upper body is made relatively light and small, the first to third locks and the frame prevent the main body from vibrating at the front and rear sides of the handling room and at the rear of the handling room. Can be closed and fixed to. Moreover, because of the bent shape of the frame, it does not hinder the carrying out of the predetermined threshing and discharging straw. By operating only one operating tool, all or two of the first to third locking tools are unlocked all at once due to the interlocking connection.

[0006]

The first to third locks and the closing lock by the frame make it possible to avoid the vibration of the upper body and make the work efficient and comfortable. Moreover, the upper fuselage can be made comparatively light and small, and the operation of opening and closing the handling room has become easier in terms of the required operating force. In addition, when the aircraft is opened, the interlocking connection releases the closing lock of the upper aircraft by a few releasing operations as compared with the case of separately releasing the locks for the first to the third locks and releasing from this surface as well. It became easier to work.

[0007]

EXAMPLES Next, examples will be shown. As shown in FIG. 12, the cut grain culm is automatically supplied to the handling chamber 2 by the threshing feed chain 1 and threshed by the rotating handling barrel 3, and the threshing discharge straw is automatically handled by the threshing feed chain 1. The threshing unit is configured to be carried out from No. 2, and the threshing discharge straw is automatically inherited from the threshing feed chain 1 by the discharge straw conveying chain 4, and is conveyed to the rear of the machine while being brought to the tip side in a sideways posture. A threshing discharge straw transfer chamber 5 for dropping and discharging is provided behind the handling chamber 2. Handling room 2 to receiving net 6
Through the specific gravity selection by the drive swing type sorting device 8 and the sorting wind supplied by the Kara Minoh, the threshing treatment product dropped and supplied through the Grain and dust are sorted, dust is discharged to the outside of the machine by the transfer action by the sorting wind and the dust removal fan 10, and the threshing processed material from the dust outlet 7 is unwound by the drive rotor 11. A sorting unit is configured in the
The first screw conveyor 12 that discharges the first processed product that is dropped and supplied from the machine, and the second screw conveyor 13 that discharges the second processed product that is dropped and supplied from the sorting device 8 to one side of the machine It is provided at the bottom of the section. The processed product from the second screw conveyor 13 is configured to be reprocessed by the thrower type transfer device 14 having the reprocessing rotor 14a in the midway of transfer and returned to the upper side of the sorting device 8,
Therefore, an automatic threshing machine for combine harvesters is constructed.

As shown in FIGS. 1 to 4, a front wall portion 15a and a rear wall portion 15b to which a handling barrel 3 is attached with a part of a front wall and a rear wall forming the handling chamber 2, and a handling chamber 2 And an upper machine body 15 provided with a ceiling wall 15c and a part 15d of the side wall on the handling side, which form the threshing discharge straw transfer chamber 5, and a machine body 16 provided with a discharge straw transfer chain 14 and a sorting unit, The machine body is configured so that the grain culm supply port 2a, the handling port 2b, the discharge straw discharge port 2c, the discharge port 5a of the threshing discharge straw transport chamber 5 and the dividing lines L1 and L2 connected to these can be divided as dividing points. I am doing it. The upper body 15 is attached to the body 16 so as to swing up and down via a pivot shaft 17 located on the opposite side of the handle 3 from the handle 2b, and a swinging operation using an opening / closing handle 18 is performed. Thus, it is arranged to open and close vertically around the axis P2 of the pivot shaft 17 which is parallel or substantially parallel to the handling cylinder rotation axis P1.

When the upper body 15 is opened,
A pair of front and rear gas springs 19 and 20, which are separately attached to the front wall portion 15a and the rear wall portion 15b, are configured to raise the upper body 15 by a self-expanding force to reduce the manipulating force. is there. When the upper body 15 is lowered, the gas springs 19 and 20 are shortened by the operating force to enable the lowering of the upper body 15, and when the upper body 15 is closed, as shown in FIG. Each of the hook-type first lock tool 21, the second lock tool 22, and the third lock tool 23, which are dispersedly arranged at three positions in the front-rear direction of the upper machine body 15, are automatically locked and the upper machine body 15 is obtained.
Is automatically closed and locked in the body 16 of the machine.

That is, as shown in FIG. 1, the first lock 21 is pivotally mounted on the outside of the front wall portion 15a, and is vertically swung around the pivot axis P3 so that the roller of the machine body 16 is rotated. The first locking device is configured to switch between a locked state in which the front wall portion 15a is connected and fixed to the machine body 16 by engaging with the die locking portion 24 and an unlocked state in which the front wall portion 15a is released downward from the locking portion 24. It is operated to the lock side by the lock urging spring 26 acting on the first operating tool 25 directly connected to the base end portion of 21, and is unlocked by an artificial rocking operation using the handle 25a of the first operating tool 25. It is configured to operate to the side. As shown in FIG. 3, the second lock member 22 is pivotally attached to the outside of the rear wall portion 15b and has a pivot axis P4.
By the vertical swinging around, the lock state in which the rear wall portion 15b is connected and fixed to the roller type locking portion 27 of the machine body 16 and the rear wall portion 15b is locked and released from the locking portion 27 is released. It is operated to the lock side by the lock urging spring 29 acting on the second operating tool 28 directly connected to the base end portion of the second locking tool 22 so as to switch to the state, and the second operating tool 28 is operated. The handle 28a is configured to be operated toward the unlocking side by a manual swinging operation. As shown in FIGS. 6 and 8, the third lock 23 is a rear end portion A of the upper body frame 30 which is located on the free end side of the upper body 15 and on the rear end side of the body from the rear wall portion 15b.
In addition to being pivotally attached to the main body 16, the left and right swings about the pivot axis P5 engages with the locking portion 32 of the connecting frame 31 provided in the main body 16 of the body, thereby connecting the body frame portion 30 to the frame 3
A lock state in which the rear end side of the upper machine body 15 is connected and fixed to the machine body main body 16 by being connected and fixed to 1.
It is configured to be switched to a lock release state in which it is disengaged to the lateral outside of the machine body. Then, as shown in FIGS. 5 to 7, the rotation interlocking shaft 3 also serves as a pivot shaft of the third locking device 23.
3, a swing arm 34 attached to the front end of the body of the interlocking shaft 33 so as to rotate integrally, an interlocking link 35 between the arm 34 and the second operating tool 28, and the third locking tool 23. By interlockingly connecting to the second operating tool 28, the third locking tool 23 as well as the second locking tool 22 also has the spring 29.
It is configured to be operated to the lock side by the manual operation and to be manually operated to the unlock side by the second operating tool 28. When the upper machine body 15 is in the open state, the first lock tool 21 is attached to the stopper position (not shown) of the upper machine body 15 by the spring 26 and the second lock tool 21 is in contact with the stopper section (not shown) of the upper machine body 15. The tool 22 and the third lock tool 23 are respectively maintained by the springs 29 in the mounting postures where the second operating tool 28 contacts the stopper portion (not shown) of the upper machine body 15, and are engaged as the upper machine body 15 descends. The stopper portion 24 and the inclined cam portion 21a are in contact with each other to operate the first lock tool 21 to the unlocking side to enable the locking action, and the locking portion 27 and the inclined cam portion 22a are in contact with each other. By operating the second lock tool 22 and the third lock tool 23 to the unlocking side to enable their locking action, when the upper body 15 is in the closed state, the first to third lock tools 21, 22, 22 are provided. 23 is automatic It is constituted to have the lock state.

That is, when cleaning or inspecting the receiving net 6 or the handling room, the handling room 2 is opened and closed at the same time as the handling body 2 is opened and closed by swinging the upper machine body 15. . Then, only by closing the upper body 15, the first to third lock tools 21, 22, 23 are automatically provided.
Locks, and the upper body 15 is closed and fixed at three positions on the front and rear sides of the handling room 2 and on the rear side of the handling room so as to prevent vibration regardless of threshing reaction force and handling barrel rotation. , The first operating tool 25 and the second operating tool 28 are operated, and all the engagements of the first to third locking tools 21, 22, and 23 are released, and the upper machine body 15 is closed. It can be unlocked.

When the upper machine body 15 is closed and locked, the free ends of the first operation tool 25, the open / close handle 18 and the second operation tool 28 are arranged so as to be linearly aligned in the longitudinal direction of the machine body. is there. That is, by knowing that the first operating tool 25, the opening / closing handle 18, and the second operating tool 28 are in the arrayed state, the upper machine body 15 causes the first to third locking tools 2 to operate.
It can be determined that the closed fixed state by 1, 22, and 23.

The frame 31 is, as shown in FIG.
It is bent and formed so as to bypass the threshing / discharging straw transport path R by the waste straw transport chain 4 to the rear side of the machine body.

As shown in FIG. 7, when the upper machine body 15 is in the closed state, the vibration-blocking tongue piece 36 provided on the machine body frame portion 30 has a pair of front and rear engaging portion support members 37, 37 of the frame 31. It is configured such that the upper body 15 is prevented from being displaced in the front-rear position with respect to the body 16 by the contact between the swinging tongue piece 36 and the locking portion support 37. That is, regardless of the movement operation force that acts due to the grain culm transportation of the threshing feed chain 1, the upper body 1
Care is taken so that 5 does not move.

As shown in FIG. 3, a first reinforcing frame 38 is erected and connected between the lower end side of the rear wall portion 16a for the handling chamber of the machine body 16 and the lateral wall portion 16b on the handling port side. The second reinforcing frame 39 connecting the upper end of the rear wall portion 16a for the handling chamber is provided to improve the strength of the rear wall for the handling chamber.

As shown in FIG. 3, the rear gas spring 20 can be attached to or detached from the spring support shaft 40 of the rear wall portion 16a in a direction orthogonal to the axial center of the spring support shaft 40. A mounting portion 20a formed in a U shape as possible is mounted. That is, it is considered that the gas spring 20 can be attached to and detached from the rear wall portion 16a only by inserting and removing the gas spring 20 in the axial direction.

The receiving net 6 is detachably attached by the attaching structure shown in FIG. That is, a pair of front and rear receiving net receiving frames 41, 41, one end of which is attached to the pivot shaft 17 and the other end of which is attached to the lower tongue plate of the body 16 of the machine body 16, slides in the circumferential direction of the handling cylinder, Also, the front and rear sides of the receiving net 6 are placed so that they can be removed to the side of the handling cylinder rotation axis P1. Then, by the pressing operation of the upper machine body 15 acting on the end face of the receiving net 6 on the side opposite to the handling port side through the straw cutting blade base 42, the handling port side end of the receiving net 6 is locked by the locking portion 443 of the machine body 16. That they are engaged,
The receiving net 6 is fixed by bringing the straw cutting blade base 42 into contact with the receiving net 6 in a direction that prevents the receiving net 6 from rising from the receiving frame 41. That is, in a state where the upper machine body 15 is opened and the straw cutting blade base 42 is removed, the receiving net 6 is slid on the side opposite to the handle side along the receiving frame 41 and disengaged from the locking portion 43. At the same time, by performing a lifting operation from the receiving frame 41 to the handle side,
The receiving net 6 can be taken out.

In order to enable the driving of the handling cylinder 3, as shown in FIGS. 1 and 10, the output pulley 4 of the mission 44 provided on the traveling machine body is linked to the engine E by a belt.
5, handle barrel drive pulley 47 attached to handle barrel rotation support shaft 46,
The transmission belt 51 is wound around the first intermediate pulley 48 attached to the pivot shaft 17, the second intermediate pulley 49 and the third intermediate pulley 50 attached to the machine body 16, and the tension wheel body provided in the mission 44 is provided. A transmission tension is applied to the transmission belt 51 by 52. Further, the pulleys 47, 48 and 49 are arranged in such a positional relationship that the upper body 15 can be opened and closed without removing or loosening the transmission belt 51.

In order to enable driving of the discharge straw conveying chain 4, as shown in FIGS. 3 and 10, the output pulley 53 mounted on the handle barrel rotation support shaft 46 and the winding sprocket 54 of the discharge straw conveying chain 4 are attached. The main body 16 with the gears linked
The transmission belt 57 is wound around the chain drive pulley 55 attached to the pivot pulley 17 and the intermediate pulley 56 attached to the pivot shaft 17, and the tension wheel 5 attached to the pivot shaft 17
A transmission tension is applied to the transmission belt 57 by 8. The pulleys 53, 55, and 56 are arranged in a positional relationship that allows the upper machine body 15 to be opened and closed without the need to remove or loosen the transmission belt 57.

[Other Embodiments] In place of the above-described structure, the first lock tool 21 and the second lock tool 22 are interlockingly connected to one operation tool, or the first to third lock tools 21, 22, 23 are connected.
All of the above may be interlockedly connected to one operation tool, and the unlocking operation of the three lock tools may be carried out for the purpose of simplifying the operation so as to be performed with less effort than separately.

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

[Brief description of drawings]

FIG. 1 is a front view of a threshing unit in a closed state.

FIG. 2 is a front view of the threshing unit in an open state.

FIG. 3 is a rear view of the threshing unit in a closed state.

FIG. 4 is a rear view of the threshing unit in an open state.

FIG. 5 is a rear view of the second lock in the opened state.

FIG. 6 is a rear view of the second locking device in the closed state.

FIG. 7 is a side view of the third locking device.

FIG. 8 is a rear view of the third locking device.

FIG. 9 is a cross-sectional view of a receiving net attachment portion.

[Fig. 10] Transmission system diagram

FIG. 11 is a perspective view of a lock tool.

FIG. 12 is a schematic side view of a thresher.

[Explanation of symbols]

 2 Handling room 3 Handling body 5 Threshing and waste straw transport room 15 Upper machine body 16 Machine body 21 First lock tool 22 Second lock tool 23 Third lock tool 24 Locking part 27 Locking part 32 Locking part 36 Locking tongue piece 37 Locking part support

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[Procedure amendment]

[Submission date] February 17, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

Title: Threshing device

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing device mounted on a self-removing combine, and more particularly to a threshing device having a characteristic structure for maintenance.

[0002]

2. Description of the Related Art Conventionally, as a threshing device with improved maintainability, for example, as shown in Japanese Utility Model Laid-Open No. 59-150231, an upper handling chamber case that rotatably supports a handling barrel has been vertically swingable. In addition to being connected to the lower threshing case side, the upper handling room case is configured to be closed and fixed to the lower threshing case side by using hook type locking means provided on the front side and the rear side of the handling room. It has been proposed to raise the room case to open the handling room widely and to perform maintenance such as cleaning and inspection of the handling room.
A hook type locking means for closing and fixing the upper handling room case to the lower threshing case side is engaged with each hook member and a hook-shaped lock member provided on the upper handling room case side so as to be swingable. A locking member fixed to the lower threshing case side,
The structure is composed of an operation lever that is protruded to the outside of the upper handling chamber case and pivotally supported separately, and a link member that pivotally connects the operation lever and the lock member.

[0003]

However, the proposed locking means having the above-mentioned structure is provided with a link member for operating a hook-shaped locking member which engages at a position where the hook is inserted inside the case from the outside of the case. Since it has a structure in which the lock member and the link member are pivotally connected,
It is easy for backlash and deformation to occur at the pivotal connection between the link member and the operating lever, etc., so that the upper handling room case that acts on the hook type locking means before and after the handling room will open upward. There was room for improvement in terms of vibration, rattling, durability, etc., because the upper handling chamber case was not firmly fixed due to load or the load in which the upper handling chamber case was displaced in the front-back direction. In addition, due to deformation or twisting, the hook-shaped locking members at the front and rear locking portions may not be accurately engaged with the corresponding locking members.
When the lock is released, it becomes difficult to reliably transmit the operation force of the operation lever to the lock member, which deteriorates the operability.

The present invention has been made by paying attention to such a point, and by improving the opening / closing operation structure on the upper threshing case side and the fixing structure on the lower threshing case side,
The object of the present invention is to surely close and fix the upper threshing case side to the lower threshing case side, and to enhance the operability of unlocking.

[0005]

A characteristic constitution of the present invention is that the threshing case is divided into an upper threshing case side and a lower threshing case side by a dividing line, and an upper threshing case side rotatably supporting a handling cylinder is provided. Vertically swingingly connected to the lower threshing case side so as to open and close, and configured to open the handling chamber by raising the upper threshing case side together with the handling barrel. The front position of the handling chamber and the rear part of the handling chamber Locking means for engaging and fixing the upper threshing case side to the lower threshing case side at the closed position at the position and each locking means at the front position and the rear position of the handling chamber,
On the upper threshing case side, on the lower threshing case side so that each lock member is engaged with a hook-shaped lock member provided so as to be swingable around a fulcrum provided near the dividing line with respect to the handle A locking member provided and an operating lever that is integrated with each locking member and extends toward the handling port side, and the operating lever projects outward from the upper threshing case, and the front portion of the handling chamber is provided. Position and rear position locking means,
Along with the closing operation of the upper threshing case side, the lock member is configured to engage with a corresponding locking member, and the upper threshing case is provided between the upper threshing case side and the lower threshing case side. The upper threshing case is provided with a telescopic rod for urging the side upward, and with the closing operation of the upper threshing case side, the tapered front-rear position regulating member and the corresponding front-rear position regulating member are engaged with each other. It is provided with a positioning engaging means for positioning the side in the front-back direction.

[0006]

According to the above construction, when the upper threshing case side is lowered and the closing operation is performed, the hook-shaped locking members of the locking means before and after the handling chamber are automatically engaged with the corresponding locking members, and the upper part is removed. The threshing case side is closed and fixed. At this time, since the upper threshing case side is slowly lowered against the upward biasing force of the telescopic rod, automatic locking in each locking means is executed with less impact.

When the upper threshing case side is closed, the positioning engagement means positions the upper threshing case side in the front-back direction with respect to the lower threshing case side, and the front position of the handling chamber and the rear portion of the handling chamber. In the position, the locking member of each locking means engages the corresponding locking member. And
Since one of the front and rear position restricting members of the positioning engaging means has a tapered shape, the other front and rear position restricting members can be smoothly engaged with each other.

When performing maintenance by opening the upper threshing case side, by operating the operating levers of each locking means from outside the case, the lock member located inside the case is directly swung to lock. It can be canceled. At this time, since the telescopic rod acts, the upper threshing case side can be lifted and opened with a relatively small force.

[0009]

Therefore, according to the present invention, the following effects can be obtained. In the locking means arranged at the front position of the handling room and the rear position of the handling room, the lock member located inside the case and the operation lever projecting to the outside of the case are integrated into one member that swings at one point. Therefore, compared to the structure in which the lock member and the operating lever are pivotally connected via the link member, the structure can be made simple and highly resistant to deformation, etc., and highly durable, and the upper threshing case side vibrates. It has become possible to firmly close and fix it by reducing the occurrence of rattling. In addition, the operating lever is integrated with a lock member that is swingable around a fulcrum near the dividing line with respect to the handling port, and the operating lever is extended to the handling port side so as to project to the outside of the case. Since the operation lever is configured to be longer than the lock member and the operation force applied to the operation lever is increased and transmitted to the lock member, even if the lock member and the locking member are firmly engaged, When releasing the lock, the lock member can be rocked and separated from the locking member without requiring a large force, and the operability of the lock release is improved. Positioning engagement means positions the upper threshing case side with respect to the lower threshing case side in the front-rear direction, and the upper threshing case side is closed and fixed to the lower threshing case side with hook type locking means provided in front and behind the handling chamber. , The upper threshing case side can be securely fixed while suppressing vibration and rattling. One of the front and rear position restricting members of the positioning engagement means is tapered so that the upper threshing case side is slowly lowered against the upward biasing force of the expansion and contraction rod, so that the impact and damage due to displacement or deformation etc. And the tapered front-rear position regulating member can be smoothly and reliably engaged with the other front-rear position regulating member. As a result, a relatively simple structure is achieved by rationally combining the self-locking type locking means using the hook-shaped locking member integrated with the operating lever, the positioning engagement means by the front-rear position regulating member, and the telescopic rod. Thus, the upper threshing case side can be easily opened and closed, and it can be securely closed and fixed, and a threshing device excellent in maintainability and handleability can be constructed.

[0010]

EXAMPLES Next, examples will be shown. As shown in FIG. 12, the cut grain culm is automatically supplied to the handling chamber 2 by the threshing feed chain 1 and threshed by the rotating handling barrel 3, and the threshing discharge straw is automatically handled by the threshing feed chain 1. The threshing unit is configured to be carried out from No. 2, and the threshing discharge straw is automatically inherited from the threshing feed chain 1 by the discharge straw conveying chain 4, and is conveyed to the rear of the machine while being brought to the tip side in a sideways posture. A threshing / discharging straw conveying unit 5 for dropping and discharging is provided behind the handling chamber 2. Handling room 2 to receiving net 6
Through the specific gravity selection by the drive swing type sorting device 8 and the sorting wind supplied by the Kara Minoh, the threshing treatment product dropped and supplied through the Grain and dust are sorted, dust is discharged to the outside of the machine by the transfer action by the sorting wind and the dust removal fan 10, and the threshing processed material from the dust outlet 7 is unwound by the drive rotor 11. A sorting unit is configured in the
The first screw conveyor 12 that discharges the first processed product that is dropped and supplied from the machine, and the second screw conveyor 13 that discharges the second processed product that is dropped and supplied from the sorting device 8 to one side of the machine It is provided at the bottom of the section. The processed product from the second screw conveyor 13 is configured to be reprocessed by the thrower type transfer device 14 having the reprocessing rotor 14a in the midway of transfer and returned to the upper side of the sorting device 8,
Therefore, a threshing device for combine harvesters is configured.

As shown in FIGS. 1 to 4, a front wall portion 15a and a rear wall portion 15b to which a handling barrel 3 is attached by a part of a front wall and a rear wall forming the handling chamber 2, and a handling chamber 2 , Threshing on which the discharge straw conveying chain 4 is installed The upper threshing case 15 side including the ceiling wall 15c forming the discharge straw conveying unit 5 and a part 15d of the side wall on the handling side, and the lower threshing including the sorting unit and the like The case 16 side is connected to the grain culm supply port 2a and the handling port 2 of the handling chamber 2.
b, the threshing case is configured so that the discharging straw discharge port 2c, the discharging exit 5a of the threshing discharging straw conveying unit 5, and the dividing lines L1 and L2 connected to these can be divided as dividing points.

The upper threshing case 15 side is attached to the lower threshing case 16 side so as to swing up and down via a pivot shaft 17 located on the opposite side of the handling barrel 3 from the handling mouth 2b, and an open / close handle 18 is provided. The swinging operation is performed so as to open and close up and down around the axis P2 of the pivot shaft 17 which is parallel or substantially parallel to the handling cylinder rotation axis P1.

When the upper threshing case 15 is opened, a pair of front and rear expansion rods 19 and 2 using gas springs are separately attached to the front wall portion 15a and the rear wall portion 15b.
0 is configured to urge the upper threshing case 15 side to move upward by the self-expanding force to reduce the manual operation force. At the time of lowering operation of the upper threshing case 15, the gas springs 19 and 20 are shortened due to the operating force to enable the lowering of the upper threshing case 15 side, and the upper threshing case 15 is lowered to the closed position. As shown in FIG. 11, the first lock member 21, the second lock member 22, and the third lock member in the hook-type lock means which are dispersedly arranged at three positions in the front-rear direction on the upper threshing case 15 side. Each of 23 is automatically locked, and the upper threshing case 15 side is automatically closed and locked to the lower threshing case 16 side, which is a so-called self-locking structure.

That is, the first lock member 21 is shown in FIG.
Further, as shown in FIG. 2, the front wall portion 15a is pivotally mounted on the outside of the front wall portion 15a so as to be vertically swingable about a fulcrum P3 provided near the dividing line L1 with respect to the handle 2b, and is attached to the tip end portion thereof. A first cam is formed into a hook shape having an inclined cam surface 21a and an engagement recess 21b following the inclined cam surface 21a, and the base end of the lock member 21 has a length sufficiently longer than the length of the lock member 21.
The operating lever 25 is directly connected so as to be integrally swingable, and the handle 22a is connected.
It extends greatly to the side. Then, the engagement concave portion 21b of the lock member 21 is engaged with the roller-type locking member 24 provided on the lower threshing case 16 side to connect and fix the front wall portion 15a to the lower threshing case 16 side in a locked state. , Is locked by a lock biasing spring 26 acting on a first operating lever 25 that swings integrally with the first lock member 21 so as to switch to a lock release state in which the lock member 24 is released downward. It is configured to be operated to the lock release side by a manual swing operation that is operated to the side and grips the handle portion 25a of the first operation lever 25.

The second lock member 22 is shown in FIGS.
As shown in FIG. 4, the rear wall portion 15b is pivotally mounted on the outside of the rear wall portion 15b so as to be swingable up and down about a fulcrum P4 provided near the dividing line L2 with respect to the handle 2b, and an inclined cam surface is attached to the tip portion thereof. The second operating lever 28 is formed in a hook shape including 22a and an engaging recess 22b that follows the second operating lever 28 and is sufficiently long as compared with the length of the locking member 22 at the base end portion of the locking member 22. It is directly connected so as to be integrally swingable and largely extends toward the handling port 22a side. Then, the engagement concave portion 22b of the lock member 22 is engaged with the roller type locking member 27 provided on the lower threshing case 16 side so that the rear wall portion 15b is connected and fixed to the lower threshing case 16 side. , Locking member 27
To switch to the unlocked state where
In addition, the lock biasing spring 29 acting on the second operating lever 28 that swings integrally with the second lock member 22.
It is configured to be operated to the lock release side by a manual swinging operation by gripping the handle portion 28a of the second operation lever 28.

As shown in FIGS. 6 to 8, the third lock member 23 is located on the free end side of the upper threshing case frame 30 on the upper threshing case 15 side and on the rear end side of the fuselage from the rear wall portion 15b. The lower threshing case 1 is pivotally attached to the rear end portion A of the lower threshing case 1 by swinging left and right around the pivotal axis P5.
The upper threshing case frame 30 is engaged with the locking member 32 of the connecting frame 31 provided on the 6 side to connect the upper threshing case frame 30 to the connecting frame 31.
It is configured to switch between a locked state in which the rear end side of the upper threshing case 15 side is fixedly coupled to the lower threshing case 16 side by being connected and fixed to the unlocked state in which the locking member 32 is disengaged to the lateral side of the machine body. There is.

Further, as shown in FIGS. 5 to 7, a rotation interlocking shaft 33 which also serves as a pivot shaft of the third lock member 23, and an end portion of the interlocking shaft 33 which is attached to the front side of the machine body so as to rotate integrally therewith. The rocking arm 34 and the interlocking link 35 between the arm 34 and the second operating lever 28 are used to form the third lock member 23.
Is also linked to the second operating lever 28,
The third lock member 23 is also configured to be operated to the lock side by the spring 29 together with the second lock member 22, and to be manually operated to the unlock side by the second operation lever 28.

When the upper threshing case 15 side is open, the first lock member 21 is in the mounting position where the first operating lever 25 contacts the stopper part (not shown) on the upper threshing case 15 side. The spring 26, and
The second lock member 22 and the third lock member 23 are the second
The operating levers 28 of the above are maintained by the springs 29 in the mounting positions where they are brought into contact with the stoppers (not shown) of the upper threshing case 15, respectively. The cam surface 21a abuts on the first lock member 21 against the spring 26 so as to relatively sway in the unlocking direction, and the locking member 27 abuts the inclined cam surface 22a. When the second lock member 22 and the third lock member 23 are oscillated relative to the spring 29 in the unlocking direction, and when the upper threshing case 15 is in the closed position, the locking member 24 moves relative to each other. The first lock member 21 is assisted by the spring 26 so as to pass through the inclined cam surface 21a and engage with the engaging recess 21b, and the locking member 27 relatively moves the inclined cam surface 22a. The second lock member 22 is assisted by the spring 29 so as to engage with the engaging recess 22b, and the third lock member 23 also engages with the locking member 32, so that all locking means are automatically operated. It is configured to be in a locked state.

That is, when cleaning or inspecting the receiving net 6 or the handling chamber, the handling chamber 2 is opened and closed by swinging the upper threshing case 15 side, and at the same time the handling barrel 3 moves in and out. Of. Then, the first thru | or 3rd locking member 21,22,23 locks automatically only by closing operation of the upper threshing case 15 side, and the upper threshing case 1
The 5 side is closed and fixed at three positions, ie, the front and rear sides of the handling room 2 and the rear side of the handling room, so as to prevent vibration, regardless of threshing reaction force or rotation of the handling cylinder. In addition, the first lock member 21 and the second lock member 22 are integrally formed into the handling port 2b.
By operating the first operating lever 25 and the second operating lever 28 that greatly extend to the side, all the engagements of the first to third lock members 21, 22, 23 are released, and the upper threshing case 15 The side can be closed and unlocked.

When the upper threshing case 15 is closed and locked, the free end of the first operating lever 25, the open / close handle 18
Further, the free end portion of the second operation lever 28 is arranged and set so as to be linearly aligned in the machine longitudinal direction. That is, by knowing that the first operating lever 25, the opening / closing handle 18, and the second operating lever 28 are in the above-described arrangement state, the upper threshing case 15 side is provided with the first to third locking members 21, 2.
Therefore, it can be determined that the closed and fixed state by Nos. 2 and 23 is established.

As shown in FIG. 11, the connecting frame 31 is formed in a bent shape so as to bypass the threshing / discharging straw conveying path R by the discharging straw conveying chain 4 to the rear side of the machine body.

As shown in FIG. 7, in the closed state on the upper threshing case 15 side, the upper threshing case frame 3 is
The front-rear position regulating member 36, which is a plate piece formed in a tapered shape with a wide width in the front-rear direction, is provided for the connection frame 3
1 between the front and rear pair of front and rear position restricting members 37, 37, and the front and rear position restricting member 36 and the front and rear position restricting member 37 are brought into contact with each other so that the upper threshing case 15 side is displaced from the lower threshing case 16 side with respect to the front and rear position. Is configured to be suppressed.

As shown in FIG. 3, a first reinforcing frame 38 is erected and connected between the lower end side of the rear wall portion 16a for the handling chamber on the lower threshing case 16 side and the lateral wall portion 16b on the handling mouth side, and the first reinforcing frame 38 is also connected. A second reinforcing frame 39 that connects the frame 38 and the upper end side of the rear wall portion 16a for the handling chamber is provided,
The strength of the rear wall for the handling room is improved.

As shown in FIG. 3, the rear gas spring 20 can be attached to or detached from the spring support shaft 40 of the rear wall portion 16a in a direction orthogonal to the axial center of the spring support shaft 40. A mounting portion 20a formed in a U shape as possible is mounted. That is, the expansion rod 20 can be attached to and detached from the rear wall portion 16a only by inserting and removing the expansion rod 20 in the axial direction.

The receiving net 6 is detachably attached by the attaching structure shown in FIG. That is, a pair of front and rear receiving net receiving frames 41, 41, one end of which is attached to the pivot shaft 17 and the other end of which is attached to the lower lip plate portion of the lower threshing case 16, slide in the circumferential direction of the handling cylinder. , And the front and rear sides of the receiving net 6 are placed so as to be removable to the side of the handling cylinder rotation axis P1. Then, by pressing the upper threshing case 15 which acts on the end surface of the receiving net 6 on the side opposite to the mouth side, the receiving net 6 is pressed.
Has its end on the handle side engaged with the locking member 44 of the lower threshing case 16, and prevents the straw cutting blade base 42 from rising from the receiving frame 41 with respect to the receiving net 6. The receiving net 6 is fixed by abutting in the direction. That is, in a state in which the upper threshing case 15 side is opened and the straw cutting blade base 42 is removed, the catching net 6 is slid along the catching frame 41 to the opposite side to the handle side and the locking member 43. It is possible to take out the receiving net 6 by removing it from the receiving frame 41 and lifting it from the receiving frame 41 to the handle side.

In order to enable the driving of the handling cylinder 3, as shown in FIGS. 1 and 10, the output pulley 4 of the mission 44 provided on the traveling machine body in association with the belt of the engine E is provided.
5, handle barrel drive pulley 47 attached to handle barrel rotation support shaft 46,
A transmission belt 51 is wound around a first intermediate pulley 48 attached to the pivot shaft 17, a second intermediate pulley 49 attached to the lower threshing case 16, and a third intermediate pulley 50, and a tension wheel provided in a mission 44. The body 52 is configured to apply a transmission tension to the transmission belt 51. Then, the opening and closing of the upper body 15 is performed by the transmission belt 51.
The pulleys 47, 48, and 49 are arranged in a positional relationship where they can be formed without the need to remove or loosen them.

In order to enable driving of the exhaust straw conveying chain 4, as shown in FIGS. 3 and 10, the output pulley 53 mounted on the handle barrel rotation support shaft 46 and the winding sprocket 54 of the exhaust straw conveying chain 4 are attached. A transmission belt 57 is wound around a chain drive pulley 55 mounted on the lower threshing case 16 side and an intermediate pulley 56 mounted on the pivot shaft 17 in a gear interlocking state, and a tension wheel body mounted on the pivot shaft 17 is also provided. Transmission tension is applied to the transmission belt 57 by 58. Further, the pulleys 53, 55 and 56 are arranged in such a positional relationship that the upper threshing case 15 side can be opened and closed without the need to remove or loosen the transmission belt 57.

[Other Embodiments] In place of the above-described structure, the first lock member 21 and the second lock member 22 are interlockingly connected to one operation lever, or the first to third lock members 21 and 22 are connected. , 23 may be interlockingly connected to a single operation lever, and the lock releasing operation of the three lock members may be performed with a lesser labor than that for separately, so as to simplify the operation.

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

[Brief description of drawings]

FIG. 1 is a front view of a threshing unit in a closed state.

FIG. 2 is a front view of the threshing unit in an open state.

FIG. 3 is a rear view of the threshing unit in a closed state.

FIG. 4 is a rear view of the threshing unit in an open state.

FIG. 5 is a rear view of the second lock member in an opened state.

FIG. 6 is a rear view of the second lock member in a closed state.

FIG. 7 is a side view of a third lock member.

FIG. 8 is a rear view of the third lock member.

FIG. 9 is a cross-sectional view of a receiving net attachment portion.

[Fig. 10] Transmission system diagram

FIG. 11 is a perspective view of a lock member.

FIG. 12 is a schematic side view of a threshing device.

[Explanation of reference numerals] 2 Handling chamber 3 Handling barrel 15 Upper threshing case 16 Lower threshing case 19 Expansion rod 20 Expansion rod 21 Lock member 22 Lock member 24 Locking member 25 Operation lever 27 Locking member 28 Operation lever 36 Front-rear position regulating member 37 Front-rear position regulating member

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[Figure 5]

[Procedure amendment 4]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

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[Figure 6]

Claims (1)

[Claims] 1. An upper threshing case (15) side, which forms a handling chamber (2) and a threshing-discharging-and-discharging-wall transporting part (5) behind the handling chamber and rotatably supports a handling barrel (3), swings up and down. It is openably and closably connected to the lower threshing case (16) side to raise the upper threshing case (15) side together with the handling barrel (3) to open the handling chamber (2) and the threshing-discharging-discharging-wall transfer section (5). The upper threshing case (15) is provided at three positions, that is, the front position of the handling chamber (2), the rear position of the handling chamber (2), and the position of the threshing and discharging straw transfer chamber (5) side. ) Side is provided with a locking means for engaging and fixing in a closed position, and each of the three locking means is a hook-shaped locking member (21), (22), (23) capable of swinging operation, and this locking member. Locking members (24), (27), (32) with which (21), (22), (23) are engaged And a front-rear position restricting member (37) composed of a pair of plate members arranged in a face-to-face relationship at intervals in the front-rear direction, and a front-rear width corresponding to the interval between the front-rear position restricting members (37). The front and rear position restricting member (36) made of a plate material is separately arranged on the upper threshing case (15) side and the lower threshing case (16) side, and these front and rear positions are associated with the closing operation of the upper threshing case (15) side. Restriction member (36),
A threshing device comprising a positioning means for positioning the upper threshing case (15) side in the front-rear direction by engaging (37).