JP2667648B2 - Threshing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as a threshing apparatus with improved maintainability, for example, as shown in Japanese Utility Model Application Laid-Open No. 59-150231, an upper handling chamber case rotatably supporting a handling cylinder is opened and closed in a vertically swingable manner. It is connected to the lower threshing case side, and the upper handling chamber case is closed and fixed to the lower threshing case side using hook-type locking means provided on the front and rear sides of the handling room. It has been proposed to raise the chamber case to open the handling room widely so that maintenance such as cleaning and inspection of the handling room can be performed.The hook type that closes and fixes the upper handling room case to the lower threshing case side has been proposed. A locking member provided on the upper handling chamber case side so as to be swingable, a locking member fixed on the lower threshing case side so that each locking member is engaged, Room An operating lever which is separately pivotally supported to protrude over the scan outwards and a structure constituted from a link member for pivotally connecting the locking member and the operating lever.

[0003]

However, the proposed locking means having the above-mentioned structure requires a link member to operate a hook-shaped locking member which engages at a position where the locking member has entered the inside of the case from outside the case. Because of the structure interposed, the pivot connection part of the lock member and the link member,
Backlash and deformation are apt to occur at the pivotal connection part between the link member and the operation lever, etc., and the locking and fixing of the locking means is not stable, and acts on the hook type locking means before and after the handling chamber. The upper compartment case is not firmly fixed due to the load in the direction in which the upper compartment room opens upward, or the load in which the upper compartment case shifts in the front-rear direction, causing vibration, rattling, durability, etc. There was room for improvement. In addition, there is a possibility that the hook-shaped lock members at the front and rear lock portions may not properly engage with the corresponding locking members due to deformation or torsion, and the operating force of the operation lever is securely applied to the lock member when unlocking. It was difficult to communicate and the operability was reduced.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the lock means to solve the above-mentioned problems, to firmly close and fix the openable and closable divided case, and to enhance the operability of unlocking.

[0005]

According to a feature of the present invention, the threshing case is divided into an upper threshing case side and a lower threshing case side by a dividing line, and the handling cylinder is rotatably supported. The upper threshing case side is connected to the lower threshing case side so as to swing freely open and close, and the upper threshing case side is raised together with the handling cylinder to open the handling chamber, and the front and rear sides of the handling chamber side are configured. At two locations and at the position of the threshing and discharging straw transporting unit side at the rear of the handling room, locking means provided with a locking member for engaging and fixing the upper threshing case side to the lower threshing case side at the closed position is provided. Each locking means, a hook-shaped locking member provided so as to be swingable around a fulcrum provided near the dividing line with respect to the handling port on the upper threshing case side,
A locking member provided on the lower threshing case side so that each lock member is engaged, and an operation lever integrated with each lock member and extending toward the port side and projecting outward from the upper threshing case; And each of the lock members on the handling room side is configured to be unlockable by an operation lever, and the threshing and discharging stirrer conveyance unit is operated in conjunction with the operation of the operation lever on the lock member on the handling room side. The lock member at the side position is configured to be unlockable.

[0006] In the second aspect of the present invention, the threshing case is divided into an upper threshing case side and a lower threshing case side by a dividing line, and the upper threshing case side rotatably supports a handling cylinder. The upper threshing case side is connected to the lower threshing case side so as to be able to swing up and down freely, and the upper threshing case side is raised together with the handling cylinder to open a handling room, and two front and rear sides of the handling room side, At the position of the threshing / exhaust straw conveying unit side at the rear of the handling room, a locking means provided with a lock member for engaging and fixing the upper threshing case side to the lower threshing case side at the closed position is provided, and each of the locking means at the handling room side A hook-shaped lock member provided so as to be swingable about a fulcrum provided on the upper threshing case side with respect to the handling port near the dividing line, and a lower threshing case side such that each lock member is engaged. Locking member provided on each And an operating lever extending toward the handling side and protruding outward from the upper threshing case, and each of the lock members on the handling chamber side can be unlocked by the operating lever. In addition, the lock member at the threshing discharge straw transport unit side position can be unlocked in conjunction with the operation of the operation lever with respect to the lock member on the handling room side, and further, the front and rear positions provided on the upper threshing case side The present invention is characterized in that a positioning engagement means is provided for positioning the upper threshing case in the front-rear direction by engaging the regulating member with a front / rear position regulating member provided on the lower threshing case. As described in claim 3, when the operation lever on the handling room side for releasably interlocking the lock member at the threshing and discharging straw transporting unit side position is one that operates a lock member provided on the rear side of the handling room. Good.

[0007]

According to the above construction, when the upper threshing case side is closed, each lock is provided at three positions, that is, the front and rear two positions on the handling room side and the threshing and discharging straw transporting portion on the rear side of the handling room. The hook-shaped locking member of the means engages with the corresponding locking member to perform the locking operation, so that the upper threshing case side is securely and firmly closed and fixed. When performing maintenance by opening the upper threshing case side, by operating the operation lever of the lock means from outside the case, the lock member located inside the case is integrated with this lock member,
In addition, the lock can be released by the swinging operation directly by the operation lever that is swingably operated around the fulcrum provided near the dividing line. When the upper threshing case side is opened, the lock on the handling room side is released by operating the operation lever for the lock member on the handling room side. However, since the operation of the operation lever for operating the lock member on the handling room side is interlocked, the lock on the threshing and discharging straw transporting unit side is also released. In addition, by providing positioning engagement means for performing positioning in the front-rear direction, when the upper threshing case side is closed, the positioning engagement means is moved in the front-rear direction of the upper threshing case with respect to the lower threshing case side. In the state where the front-rear position is regulated in this way, in the handling room side, as described above, and in the threshing discharge stirrer conveyance unit behind the handling room, the lock members of the respective lock means correspond. It is engaged with the locking member.

[0008]

According to the present invention, the following effects can be obtained. [1] The upper threshing case side is closed and fixed to the lower threshing case side by locking members provided at the front and rear two places on the handling room side and the threshing and discharging straw transporting section side, so that the upper threshing case side is subjected to vibration and backlash. It can be securely fixed in a suppressed state. [2] Since the lock member of the threshing and discharging straw transport unit can also be unlocked in conjunction with the unlocking operation of the lock member on the handling room side, the unlocking of the threshing and discharging straw transport unit behind the handling room is locked on the handling room side. All that is required is to operate the operation lever for the member, and the handling and operability are excellent. [3] In the lock means provided at the front and rear positions on the handling room side, the lock member located inside the case and the operation lever protruding outside the case are integrated into a single member that swings at one point. Compared to a structure in which a lock member and an operating lever are pivotally connected via a link member, a structure with a simple structure and high durability that is unlikely to cause deformation etc. can be provided, and the upper threshing case side is free from vibration and rattling. It can be firmly closed and fixed with less occurrence, etc. [4] In addition, a lock member and an operation lever provided so as to be swingable about a fulcrum near the division line with respect to the handle are integrated with each other, and the operation lever is extended toward the handle to extend outside the case. The operating lever is configured to be longer than the lock member, and the operating force applied to the operating lever is increased to be transmitted to the lock member, so that the lock member and the locking member are firmly engaged. However, at the time of unlocking, the lock member can be swung and separated from the locking member without requiring a large force, and the operability of unlocking is also high. [5] While the upper threshing case side can be freely swung up and down to open and close to improve maintainability, the upper threshing case side can be firmly closed and fixed to the lower threshing case side during threshing work. It was possible to construct a threshing device which is capable of sufficiently withstanding the load and the like, has little noise due to vibration and rattling, and has an excellent practicability that can easily open and close the upper threshing case side. [6] As described in claim 2, by using the positioning and engaging means together, the positioning and engaging means positions the upper threshing case side with respect to the lower threshing case side in the front-rear direction (ie, moves in the front-rear direction). The upper threshing case side is closed and fixed to the lower threshing case side by hook type locking means provided on the handling room side and the threshing discharge straw transfer section side, so that the upper threshing case side suppresses vibration and rattling. In this state, it is possible to further securely fix. [7] As described in claim 3, since the lock member of the threshing-discharging and discharging conveyor unit is unlocked by being interlocked with the operation of the operation lever for operating the lock member provided at the rear of the handling chamber, the interlocking operation is performed. The interlocking structure can be simplified, such as the arm can be shortened, and handling and operability are good.

[0009]

Next, an embodiment will be described. As shown in FIG. 12, the harvested culm is automatically supplied to the handling room 2 by the threshing feed chain 1 and threshed by the rotating handling drum 3, and the threshing waste straw is automatically handled by the threshing feed chain 1. The threshing unit is configured so as to be carried out from the thruster 2, and the threshing waste straw is automatically inherited from the threshing feed chain 1 by the waste straw transport chain 4, and is taken out to the rear of the machine while being moved to the tip side in a sideways posture. A threshing and discharging straw transporting section 5 for dropping and discharging is provided behind the handling chamber 2. From receiving room 2 to receiving network 6
Of the thresh-treated product dropped and supplied through the hopper and the thresh-processed product dropped and supplied from the handling chamber 2 through the dust discharge port 7 are subjected to specific gravity sorting by a drive rocking sorter 8 and sorting wind supplied by Karamin 9. The dust is separated into particles and dust, and the dust is discharged to the outside of the machine by the transfer action by the separation wind and the dust discharging fan 10, and the threshing product from the dust discharging port 7 is released by the driving rotating body 11. A sorting unit, and a sorting device 8
The first screw conveyor 12 that carries out the first processed material dropped from the outside and the second screw conveyor 13 that carries out the second processed material dropped from the sorting device 8 to one side of the machine. It is provided at the bottom of the part. The processed material from the second screw conveyor 13 is configured to be reprocessed by the slower-type transfer device 14 having the reprocessing rotary member 14a at a position in the middle of the transfer and returned to the upstream side of the sorting device 8,
Thus, a threshing device for the combine is configured.

As shown in FIGS. 1 to 4, a front wall portion 15a and a rear wall portion 15b to which a handle drum 3 is attached at a part of the front wall and the rear wall forming the handle room 2, and the handle room 2 , A threshing waste transporting chain 4, and an upper threshing case 15 provided with a ceiling wall 15 c and a part 15 d of a handling side lateral wall forming a draining straw transporting portion 5, and a lower threshing provided with a sorting portion and the like. The case 16 side is connected to the cereal stalk supply port 2a and the
b, a threshing case is configured so as to be able to divide the discharge straw take-out port 2c, the threshing discharge straw transport section 5's carry-out port 5a, and the dividing lines L1 and L2 connected thereto as division points.

The upper threshing case 15 is attached to the lower threshing case 16 so as to swing up and down via a pivot shaft 17 located on the side opposite to the handle 2b with respect to the handle drum 3, and an opening / closing handle 18 is provided. By means of the swinging operation, the pivot shaft 17 is opened and closed 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 extensible rods 19, 2 using gas springs respectively attached to the front wall 15a and the rear wall 15b.
0 is configured to perform an upward biasing operation on the upper threshing case 15 side by self-extension to reduce the manual operation force. At the time of the lowering operation of the upper threshing case 15, the gas springs 19 and 20 are shortened due to the operation force so that the upper threshing case 15 can be lowered, and the upper threshing case 15 is lowered to the closed position. 11, the first lock member 21, the second lock member 22, and the third lock member of the hook type locking means which are distributed and arranged at three places in the front-rear direction on the upper threshing case 15 side as shown in FIG. Each of 23 has a so-called self-locking structure in which the upper threshing case 15 side is automatically closed and locked with the lower threshing case 16 side.

That is, the first lock member 21
2, as shown in FIG. 2, outside the front wall portion 15a, it is pivotally attached to the handle 2b around a fulcrum P3 provided near the dividing line L1 so as to be vertically swingable. The lock member 21 is formed in a hook shape having an inclined cam surface 21a and an engagement recess 21b following the inclined cam surface 21a, and the first end of the lock member 21 is sufficiently longer than the length of the lock member 21.
The operation lever 25 is directly connected so as to be able to swing integrally with the handle 22a.
It extends greatly toward the side. A locking state in which the engaging recess 21b of the lock member 21 is engaged with a 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. The lock is released by a lock urging spring 26 that is actuated on a first operation lever 25 that swings integrally with the first lock member 21 so as to be switched to an unlocked state that is disengaged downward from the locking member 24. The first operation lever 25 is configured to be operated to the unlocking side by an artificial swing operation while gripping the handle 25a of the first operation lever 25.

The second lock member 22 is shown in FIGS.
As shown in the figure, the pivoting member is pivotally mounted on the handle 2b outside the rear wall portion 15b so as to be vertically swingable about a fulcrum P4 provided near the dividing line L2, and has an inclined cam surface at its tip. A second operating lever 28 which is formed in a hook shape having an engagement concave portion 22b followed by an engagement concave portion 22b, and which is sufficiently longer than the length of the lock member 22, is provided at the base end of the lock member 22. It is directly connected so as to be integrally swingable and largely extends toward the handling port 22a side. A locking state in which the engaging recess 22b of the lock member 22 is engaged with a roller-type locking member 27 provided on the lower threshing case 16 to connect and fix the rear wall 15b to the lower threshing case 16 is provided. , Locking member 27
So that it switches to the unlocked state,
Further, a lock urging spring 29 acting on a second operation lever 28 swinging integrally with the second lock member 22 is provided.
Thus, the handle portion 28a of the second operation lever 28 is gripped to be operated toward the lock release side by an artificial swing operation.

As shown in FIGS. 6 to 8, the third lock member 23 is located at the free end side of the upper threshing case 15 side of the upper threshing case frame 30 and at the rear end side of the fuselage with respect to the rear wall portion 15b. The lower threshing case 1 is pivotally attached to the rear end portion A and pivoted right and left around the pivot axis P5.
The upper threshing case frame 30 is engaged with the locking member 32 of the connecting frame 31 provided on the
And a lock state in which the rear end side of the upper threshing case 15 is connected to and fixed to the lower threshing case 16 side, and a lock release state in which the locking member 32 is disengaged laterally outside the body. It is.

As shown in FIGS. 5 to 7, a rotation interlocking shaft 33 is also used as a pivot shaft of the third lock member 23, and is attached to the front end of the interlocking shaft 33 so as to rotate integrally. 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 operation lever 28 so that
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 is open, the first lock member 21 is in the mounting position where the first operating lever 25 contacts the stopper (not shown) on the upper threshing case 15. With the spring 26, and
The second lock member 22 and the third lock member 23
The operation lever 28 is maintained by the springs 29 in the mounting position where it comes into contact with the stopper portion (not shown) of the upper threshing case 15, and the lowering of the upper threshing case 15 causes the locking member 24 to tilt with the locking member 24. The first lock member 21 is pressed against the spring 26 in the unlocking direction relatively to the cam surface 21a to come into contact with the spring 26, and the locking member 27 is brought into contact with the inclined cam surface 22a. When the second thrust member 22 and the third thrust member 23 are swung relatively in the unlocking direction against the spring 29, and the upper threshing case 15 is in the closed position, the locking member 24 is relatively moved. 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 engagement concave portion 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 engagement concave portion 22b, and the third lock member 23 also engages with the lock member 32, so that all the lock means are automatically operated. It is configured so as to be in a locked state.

In other words, when cleaning or inspecting the receiving net 6 and the handling room, the upper threshing case 15 is swung to open and close the handling room 2 and at the same time the handling drum 3 enters and exits. It is. Then, only by closing the upper threshing case 15, the first to third locking members 21, 22, and 23 automatically lock, and the upper threshing case 1 is closed.
The 5 side is closed and fixed at three places, the front and rear sides of the handling room 2 and the rear portion of the handling room, so that it is hard to vibrate regardless of threshing reaction force, rotation of the handling cylinder, and the like. In addition, the first lock member 21 and the second lock member 22 are respectively integrated with the
By operating the first operation lever 25 and the second operation lever 28 which extend largely to the side, all of the first to third lock members 21, 22, 23 are disengaged and the upper threshing case 15 The side can be closed and released.

In the closed and locked state of the upper threshing case 15 side, the free end of the first operating lever 25 and the opening / closing handle 18
And, the free end of the second operation lever 28 is arranged and set so as to be linearly arranged in the longitudinal direction of the aircraft. That is, knowing that the first operation lever 25, the opening / closing handle 18 and the second operation lever 28 are in the above-mentioned arrangement state, the upper threshing case 15 side can be the first to third lock members 21 and 2.
Thus, it can be determined that the camera is in the state of being closed and fixed by 2, 23.

As shown in FIG. 11, the connecting frame 31 is bent so as to detour the threshing and discharging straw transporting path R by the discharging straw transporting chain 4 to the rear side of the machine body.

As shown in FIG. 7, the upper threshing case frame 3 is in the closed state on the upper threshing case 15 side.
The front and rear position regulating member 36, which is a plate piece formed in a wide and tapered shape in the front and rear, provided for the connection frame 3
The upper and lower threshing case 15 is displaced from the lower and threshing case 16 by the contact between the front and rear position regulating member 36 and the front and rear position regulating member 37. Is suppressed.

As shown in FIG. 3, a first reinforcing frame 38 is erected and connected between the lower end side of the rear wall 16a for the handling room on the lower threshing case 16 and the side wall 16b on the handling opening side. 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 rear wall for the handling room is strengthened.

As shown in FIG. 3, the rear gas spring 20 can be engaged with or detached from the spring support shaft 40 of the rear wall portion 16a in a direction perpendicular to the axis of the spring support shaft 40. A mounting portion 20a formed in a U shape as possible is mounted. That is, consideration is made that the telescopic rod 20 can be attached to and detached from the rear wall portion 16a simply by inserting and removing the telescopic 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 of the lower threshing case 16, slide in the circumferential direction of the handling cylinder. In addition, the front and rear sides of the receiving net 6 are mounted so as to be detachable from the handling cylinder rotation axis P1 side. Then, the pressing operation of the upper threshing case 15 acting on the end face of the receiving net 6 opposite to the handling side via the straw cutting blade base 42 causes the receiving net 6 to be pressed.
Of the lower threshing case 16 and the straw cutting blade base 42 is prevented from rising from the receiving frame 41 with respect to the receiving net 6. The receiving net 6 is fixed by being brought into contact with the direction. That is, with the upper threshing case 15 side opened and the straw cutting blade base 42 removed, the receiving net 6 is slid along the receiving frame 41 to the opposite side to the port side to engage the locking member 43. The receiving network 6 can be taken out by removing from the receiving frame 41 and lifting the receiving frame 41 toward the handling port.

As shown in FIGS. 1 and 10, the output pulley 4 of the transmission 44 provided on the traveling machine body in association with the belt of the engine E to enable the driving of the handle cylinder 3 is provided.
5, a handlebar drive pulley 47 attached to the handlebar rotation support shaft 46,
The 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 on the transmission 44. A transmission tension is applied to the transmission belt 51 by the body 52. The opening and closing of the upper body 15 is controlled by the transmission belt 51.
The pulleys 47, 48 and 49 are arranged in a positional relationship where they can be removed without the need for removal and relaxation operations.

As shown in FIGS. 3 and 10, the output straw pulley 53 attached to the rotating drum support shaft 46 and the wound sprocket 54 of the waste straw transport chain 4 can be driven to drive the waste straw transport chain 4. A transmission belt 57 is wound around a chain drive pulley 55 attached to the lower threshing case 16 side and an intermediate pulley 56 attached to the pivot shaft 17 in a state where the gears are interlocked, and a tension ring attached to the pivot shaft 17. A transmission tension is applied to the transmission belt 57 by 58. The pulleys 53, 55, and 56 are arranged in such a manner that the opening and closing of the upper threshing case 15 can be performed without the need to remove or loosen the transmission belt 57.

[Another Embodiment] Instead of the above-described embodiment, the first lock member 21 and the second lock member 22 are linked to one operation lever,
All of the first to third lock members 21, 22, and 23 are interlocked and connected to one operation lever, and the operation of unlocking the three lock members is simplified so that the operation can be performed with less labor than separately. May be implemented.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the 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 a second lock member in an open 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 a third lock member.

FIG. 9 is a cross-sectional view of a receiving net mounting 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 apparatus.

[Explanation of symbols]

 2 Handling Room 2b Handling Port 3 Handling Cylinder 5 Threshing Discharge Transporter 15 Upper Threshing Case 16 Lower Threshing Case 21 Locking Member 22 Locking Member 23 Locking Member 24 Locking Member 25 Operating Lever 27 Locking Member 28 Operating Lever 36 Front-Back Position Control Member 37 Front / rear position regulating member L1 Division line L2 Division line P3 Support point P4 Support point

Claims (3)

(57) [Claims] 1. The threshing case is divided into upper and lower threshing cases (15, 16) by dividing lines (L1), (L1).
2), the upper threshing case (15), which rotatably supports the handling cylinder (3), is connected to the lower threshing case (16) so as to be able to swing up and down and open and close. ) Together with the upper threshing case (15) so as to open the handling room (2), and the front and rear two places on the handling room (2) side and the rear of the handling room (2)
The upper threshing case (1
5) With the side closed, engage the lower threshing case (16)
Lock members (21), (22) and (23)
Locking means are provided, and each locking means on the handling room (2) side is connected to the dividing line (L) with respect to the handling opening (2b) on the upper threshing case (15) side.
1), a hook-shaped locking member (2) provided so as to be swingable about fulcrums (P3) and (P4) provided near (L2).
(1), (22), locking members (24), (27) provided on the lower threshing case (16) side such that the locking members (21), (22) are engaged, and each locking member. (21),
(22) and extended toward the port (2b)
Threshing case (15) Operation lever protruding outward
(25) and (28) , each of the lock members (21) and (22) on the side of the handling chamber (2).
Each is unlocked by operating levers (25) and (28).
Operable at the same time as the above-mentioned section on the handling room (2) side.
Operation of the operation lever (28) with respect to the locking member (22).
In accordance with the cropping operation, the b
A threshing device , wherein the locking member (23) is configured to be unlockable . 2. A dividing line (L1), (L1) for dividing the threshing case into an upper threshing case (15) and a lower threshing case (16).
2), the upper threshing case (15), which rotatably supports the handling cylinder (3), is connected to the lower threshing case (16) so as to be able to swing up and down and open and close. ) Together with the upper threshing case (15) so as to open the handling room (2), and two front and rear places on the handling room (2) side and the threshing discharge straw behind the handling room (2). The upper threshing case (1
5) Lock means provided with lock members (21), (22) and (23) for engaging and fixing to the lower threshing case (16) with the side closed, and each lock on the handling chamber (2) side On the side of the upper threshing case (15), the means is attached to the dividing line (L) with respect to the handle (2b).
1), a hook-shaped locking member (2) provided so as to be swingable about fulcrums (P3) and (P4) provided near (L2).
(1), (22), locking members (24), (27) provided on the lower threshing case (16) side such that the locking members (21), (22) are engaged, and each locking member. (21),
And operating levers (25) and (28) which are integrated with (22) and extend toward the handle (2b) side and protrude outward from the upper threshing case (15). ) -Side lock members (21) and (22) are configured to be unlockable by operating levers (25) and (28), respectively, and the lock member (22) on the handling chamber (2) side is arranged with respect to the lock member (22). A lock member (23) at a position on the threshing and discharging straw transporting section (5) side can be unlocked in conjunction with an operation of an operation lever (28), and a front and rear side provided on the upper threshing case (15) side Positioning and engaging means is provided for positioning the upper threshing case (15) in the front-rear direction by engaging the position regulating member (36) with the front and rear position regulating member (37) provided on the lower threshing case (16) side. Is characterized by having Apparatus. 3. An operating lever (28) on the side of the handling room (2) for releasably interlocking the lock member (23) on the side of the threshing and discharging straw transport section (5) is provided on the rear side of the handling room (2). Threshing device according to claim 1 or 2, which operates the locked member (22).