JP2003000051A - Structure for fixing waste straw transporting device in thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for fixing a waste straw transporting device in a thresher capable of rapidly opening and moving a threshing chamber case and the waste straw transporting device in a one-touch state to the upper side and efficiently simplifying maintenance operations of the threshing chamber, waste straw transporting device, etc. SOLUTION: The thresher 1 is obtained by disengageably fixing the transportation terminal end side of the waste straw transporting device 2 through a fixing mechanism 6 to a threshing lower machine casing 1a in a state of the transportation terminal starting end side of the waste straw transporting device 2 connected to the side of a threshing chamber case 3 and integrally vertically rotating the threshing chamber case 3 and the waste straw transporting device 2. In the thresher 1, a locking mechanism 5 on the side of the threshing chamber case 3 and a fixing mechanism 6 on the side of the waste straw transporting device 2 are linked so as to be simultaneously released by operations to release the fixing of a fixing release lever 3L. The fixing during lowering rotation of the threshing chamber case 3 and the waste straw transporting device 2 is respectively automatically carried out with a locking member 51 of the locking mechanism 5 and a fixing claw 60 of the fixing mechanism 6. Thereby, the structure for fixing the waste straw transporting device 2 in the thresher 1 is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing a straw conveying device in a threshing machine, which can be mounted on a combine, a harvest and the like.

[0002]

2. Description of the Related Art Conventionally, a threshing machine mounted on a combine or the like has a handling room case in which a handling barrel is rotatably supported, and a threshed straw is conveyed diagonally toward a rear cut-ground side. By raising and rotating both of the straw conveyors that are discharged as a unit, the opening of the handling room and the bottom of the straw conveyor is greatly opened so that maintenance work such as cleaning and maintenance inspection of this part can be performed. There is. In the threshing machine as described above, for example, as disclosed in Japanese Unexamined Patent Publication No. 8-89062, a handling room case is detachably fixed to a threshing lower machine frame via a lock mechanism, and a fulcrum on the rear side of the machine body. While supporting the shaft so that it can be rotated up and down using the rotation fulcrum, and with the straw transfer device connected to the handling chamber case side, the transfer end side is engaged and disengaged with the threshing lower machine frame through the fixing mechanism and vertically rotated. With the structure that is movably supported, after the lock mechanism and the fixing mechanism are respectively released, the handling chamber case and the straw conveying device are integrally rotated up and down.

[0003]

However, in the threshing machine having the above-mentioned publication, the lock mechanism of the handling room case and the fixing mechanism of the straw conveying device are unlocked and fixed simultaneously by the operation lever. Because I am trying to do
After releasing the lock mechanism and the fixing mechanism to raise the handling room case and the straw conveying device to perform maintenance work, rotate them downward to fix them again in the threshing work posture. The operation lever has to be operated simultaneously with the dynamic operation, and the handling room case and the straw transfer device, which support the turning fulcrum in a displaced manner, tend to cause a difference in the fixing timing of the lock mechanism and the fixing mechanism. Therefore, there are problems that it becomes difficult to simultaneously fix the lock mechanism and the fixing mechanism, which are performed by the operation lever as it descends and rotates, and the operation becomes complicated.

[0004]

In order to solve the above-mentioned problems, the fixing structure of the straw conveying device in the threshing machine according to the present invention is, firstly, that the handling cylinder 12 is provided between the inlet side plate 31 and the outlet side plate 32. A rotatably supported handling chamber case 3 is movably fixed to the threshing lower machine frame 1a via a lock mechanism 5, and is supported rotatably up and down with a fulcrum shaft 33 on the rear side of the machine as a fulcrum. At the same time, in a state in which the conveyance start end side of the straw conveyance device 2 is connected to the handling chamber case 3, the conveyance end end side is detachably fixed to the threshing lower machine frame 1a through the fixing mechanism 6, and the lock mechanism 5 is used. In the thresher 1, which is configured to integrally rotate the handling chamber case 3 and the straw transfer device 2 up and down by a fixing release operation of the fixing mechanism 6, the lock mechanism 5 and the straw on the handling chamber case 3 side. Attach the fixing mechanism 6 on the side of the carrier device 2 to the fixing release lever 3L. Causes cooperated job as allowed to release simultaneously the release operation, the fixing of the time of descent rotation of the threshing chamber casing 3 and the straw discharge conveying device 2, the locking member 5 of the locking mechanism 5
1 and the fixing claw 60 of the fixing mechanism 6 are automatically performed.

Secondly, the pivotal fulcrum of the straw conveying device 2 is provided so as to be offset from the pivotal fulcrum of the handling chamber case 3, and the fixed rod 22 provided on the straw conveying device 2 is detachably fixed. The fixing claw 60 of the fixing mechanism 6 is connected to the downward rotation of the handling room case 3 or the straw conveying device 2 so that the fixing rod 22 is set in the receiving posture.

Thirdly, the handling room case 3 or the straw transfer device 2
It is characterized in that the operating portion 67 rotatably supported by the fulcrum shaft 33 is operated in conjunction with the downward rotation of the fixing lever 60 to bring the fixing claw 60 into the receiving posture of the fixing rod 22.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 is a thresher mounted on a traveling machine body such as a combine, which is installed behind a mowing unit (not shown) provided on the front side of the machine body, and feeds the cut culm to the feed chain 10
It is fed into the handling room 11 via the and threshed by the handling barrel 12, and the threshed threshing is sorted by the sorting mechanism 14 installed below the receiving net 13, and the sorted grain is installed on the machine side. The grains are stored in the Glen tank 15, and the contaminants are discharged from the dust outlet 16 to the rear outside the machine, and the threshed straw is transferred from the end of the feed chain 10 to the straw conveying device 2 and discharged outside the machine. I am trying.

[0008] The handling room case 3 which constitutes the threshing upper machine frame which constitutes the handling room 11 together with the threshing lower machine frame 1a, and the straw transfer device 2 are fulcrums on the inner side (the inner side of the handling room case 3). The outer side (the side of the feed chain 10) is largely opened to enable easy maintenance work such as removal and cleaning of clogging in the handling room 11 and the grain culm transport route, and inspection and repair.

In addition, in the straw conveying device 2, with the straw chain 21 wound around a conveying frame 20 supported by a supporting structure described later, from the end side of the feed chain 10 behind the handling chamber case 3, The straw is conveyed in a substantially horizontal posture while being attached and supported in an inwardly inclined shape toward the inside. It should be noted that the feed chain 10 provided on the side of the lower threshing machine frame 1a includes the holding rail 1 provided on the side of the handling room case 3.
0a is provided in parallel, and the straw chain 21 is provided with a sandwiching rail 21a provided on the rear top plate side of the threshing lower machine frame 1a so as to sandwich and convey grain culms in series.

The handling room case 3 is, as shown in FIGS.
An inlet side plate 31 and an outlet side plate 32 that rotatably support the handling cylinder 12 are vertically provided on both front and rear sides of the top plate 30.
3 side, the handling chamber 11 is formed, and at the back side of the handling chamber case 3 (inside the machine body), the metal part 3M provided on the inlet side plate 31 and the outlet side plate 32 is laterally provided to the threshing lower machine frame 1a side. It is rotatably supported on the fulcrum shaft 33 provided, and as shown by the dotted lines in FIGS. 2 and 3, the handling chamber case 3 is vertically rotatable about the fulcrum shaft 33. Also, the fulcrum shaft 33
Extends from the rear surface of the outlet side plate 32 to a position close to the rear straw conveying device 2, and the rear end thereof is connected to the Glen tank 15
It is reinforced and supported by a support frame 17 extending from the grain discharge cylinder 15a side.

From the normal threshing work posture shown in FIG. 1, the handling room case 3 operates the front and rear fixing release levers 3L provided on the front wall side (feed chain 10 side) of the handling room case 3 in the upward direction. Thus, the lock mechanism 5a on the inlet side plate 31 side and the lock mechanism 5 on the outlet side plate 32 side are released, the handling chamber case 3 can be opened upward about the fulcrum shaft 33, and the handling chamber 11 is opened for maintenance work. The posture can be switched. The lock mechanism 5a, 5
Is a plate-like lock member 5 in which the hook portion 50 is formed.
1a and 51 are rotatably supported on the inlet side plate 31 and the outlet side plate 32 of the handling chamber case 3, and the other side is connected to each fixing release lever 3L by a connecting rod 52 and is locked by a spring 53. The hook portion 50 is urged in the direction to lock the hook portion 50 to the pin shaft-shaped fixing piece 54 projectingly provided on the threshing lower machine frame 1a side by the operation of the fixing release lever 3L.

On the other hand, the lock member 51 pivotally supported by the mounting shaft 32a on the outlet side plate 32 side has a long hole-like connecting portion 55 formed on the other side (upper side) of the connecting rod 52, and the connecting portion 55 By connecting a connecting piece 61a protruding from an operating rod 61, which will be described later, with a connecting rod 56, one lock release lever 3L can simultaneously release the lock member 51 of the lock mechanism 5 and the lock claw 60 of the lock mechanism 6. With the simple structure, the fixing release operation between the handling room case 3 and the straw conveying device 2 can be easily and quickly performed. Further, at this time, when the locking member 51 of the locking mechanism 5 releases the fixing release lever 3L upward to release the engagement with the fixing piece 54, the locking member 51 is urged by the spring 53 to urge the outlet side plate 32. The stopper 32b is provided so as to abut on the stopper so that the stopper 32b cannot rotate more than a predetermined amount, so that the handle case 3 and the straw transfer device 2 are rotated downward from the later-described maintenance work posture to reduce the threshing work posture. The hook portion 50 automatically engages with the fixed piece 54 against the spring 53 when returning to (4) so that the returning operation can be smoothly performed.

A support lock mechanism 5b for temporarily holding the maintenance work posture of the handling chamber case 3 is provided above the lock mechanism 5 on the outlet side plate 32 side, and the inlet side plate 31 and the outlet side plate 32 are provided. Between the threshing lower machine frame 1a,
A lifting rotation urging mechanism 3S including a known gas damper mechanism that resists the own weight of the handling room case 3 and the straw conveying device 2 and assists the lifting rotation of both is interposed. The support lock mechanism 5b in the illustrated example has a support plate 57 formed in a T shape.
Of the mounting shaft 32c projecting from the upper side of the center of the outlet side plate 32
Rotatably and pivotally supported at one end thereof at the front side of the handling chamber case 3 and connected to the release wire 58 of the support release lever 57L provided between the fixed release levers 3L, L, and the other end at the outlet side plate 32.
A spring 5 that pulls and urges the support fixing direction from above.
An engaging portion 57a is formed on the tip end side of the hanging portion so as to engage with the fixing piece 1b protruding toward the threshing lower machine frame 1a side so as to be engageable and disengageable.

As a result, when the support lock mechanism 5b is fully opened and brought into the maintenance work posture, the engagement portion 57a of the support plate 57 is urged by the spring 59 to engage with the fixed piece 1b at that position. Therefore, the handling room case 3 and the straw transfer device 2 are automatically positioned and supported. Further, in this state, when the support release lever 57L is operated in the release direction, the support plate 57 rotates in the opposite direction against the spring 59 and releases the engagement between the engagement portion 57a and the fixed piece 1b. It is possible to easily return and rotate the handling room case 3 and the straw conveying device 2 to the original threshing work posture around the fulcrum shaft 33 and the interchange support mechanism 2b.

Next, the straw conveying device 2 will be described with reference to FIGS. In the threshing work posture, the straw discharging and conveying device 2 supports the starting end portion of the conveying frame 20 by the conveying driving portion 2a on the outlet side plate 32 side, and the fixed rod 22 provided at the end portion of the conveying frame 20 to the accommodation supporting mechanism 2b. The fixing rod 6 is supported by the supporting frame 17 via the shaft and is fixedly attached to and supported by the fixing mechanism 6 in a detachable and stable manner on the fulcrum shaft 33. That is, when the lock release lever 3L is operated upward by the above-described structure, the lock mechanisms 5a, 5 and the lock mechanism 6 are connected to each other to perform the release operation, and the handling chamber case 3 can be opened as it is. The device 2 can be placed in the maintenance work posture in which the accommodation support mechanism 2b is used as the accommodation support fulcrum and the start end side is greatly opened upward, and when the maintenance work posture is switched to the threshing work posture, the apparatus 2 and the handling chamber case 3 are closed. The straw conveying device 2 can be automatically locked (fixed) individually.

Further, at this time, in the straw transfer device 2, since the transfer frame 20 is supported by the interchange support mechanism 2b so as to be interchangeable, even if it has a fulcrum of rotation different from that of the handling chamber case 3, they are simultaneously interlocked. The rotation can be performed smoothly, and at the time of rotation, the downward movement of the end portion is restricted to prevent contact with other places. That is, the interchange support mechanism 2b is provided with a support link 23 that can be bent in a direction that allows the transport frame 20 to move in the extending direction and that supports and supports the vertical movement of the transport frame 20. The universal joint 25 is composed of a pillow ball joint, a universal joint, or the like that allows the dynamic rotation and the lateral tilt. The base portion of the support link 23 is fixed to the support frame 17, and the support link 2
The universal joint 25 attached to the other end of the transport frame 20
It is detachably attached to the rear end of the fixed rod 22 provided on the side surface of the end portion of the.

Therefore, the handling chamber case 3 is rotated upward about the fulcrum shaft 33, and the straw conveying device 2 is accommodated by the interchange supporting mechanism 2b.
When moving upward with the fulcrum as a fulcrum, the straw-conveying device 2 supports downward movement of the terminal end side thereof so as to allow the rear end-side portion to move backwards in a substantially horizontal direction. A smooth switching operation from the threshing work posture to the maintenance work posture is possible without contacting the rear top plate of the threshing machine 1 or a culm treatment device (not shown), and the straw conveying device 2 terminates the conveyance. The side can be extended rearward from the fulcrum shaft 33 to a desired length, and the straw can be appropriately discharged to the already-cutted ground side, and the combine operation can be performed favorably.

As shown in FIGS. 4 and 6, the outlet side plate 32 is provided near the fixing mechanism 6 at the rear extension of the fulcrum shaft 33.
The mounting bracket 27 of the reinforcing connecting rod 26 that is connected to the side for reinforcing support is rotatably supported, and the other end of the reinforcing connecting rod 26 attached to the mounting bracket 27 has the other end of the straw conveying device 2. Mounting base 2 for supporting the transport drive unit 2a on the outlet side plate 32
It is attached and fixed to 8. The mounting base 28 is on the lower surface thereof,
A straw gear case 28a rotatably supported by a pivot is attached to the start end of the transport frame 20, and the straw gear case 2 is attached.
Numeral 8a drives the straw chain 21 via the drive sprocket with the rotational power of the handling barrel 12 side, and when the joint support mechanism 2b and the support frame 17 are connected and the fixing mechanism 6 is released, the straw conveyor device 2 The trailing end side is configured to be independently rotatable around the transport drive unit 2a side as a rotation fulcrum, and the terminal rod is moved upward while the fixed rod 22 of the straw transport device 2 is supported by the accommodation support mechanism 2b. The backlash and the backlash are prevented by being fixed to the fulcrum shaft 33 side by the fixing mechanism 6.

Next, a first embodiment of the fixing mechanism 6 according to the present invention will be described with reference to FIGS. In this fixing mechanism 6, an operating rod 61 for rotating the fixing claw 60 in the releasing direction via the lock member 51 and the connecting rod 56 based on the operation of the fixing release lever 3L is provided so as to project from the fulcrum shaft 33 side. .. are pivotally supported by a plurality of support pieces 62, 62. Further, the operating rod 61 in the illustrated example has a mounting piece 63 projecting from the end side thereof, and the fixing claw 60 is mounted and fixed to the mounting piece 63 so that the positioning can be adjusted.

A U-shaped seat 65 is provided on the fulcrum shaft 33 so as to face the fixed claw 60, and the spring 66 interposed between the fixed claw 60 and the fulcrum shaft 33 urges the fulcrum shaft 33. In the state where the fixed rod 22 is placed in the receiving seat 65, rattling is prevented when the fixed rod 22 is clamped and fixed by the fixing claw 60. Although the spring 66 in the illustrated example is a torsion spring, it may be a leaf spring or the like.

Further, the fixing mechanism 6 is provided with a straw conveying device 2
To return to the threshing work posture by returning the rotation from the maintenance work posture to the threshing work posture, the fixing claw 60, which is biased in the fixing direction by the spring 66, receives the fixing rod 22 against the spring 66 and returns to the original position. It is provided with a guide lock mechanism 9 for guiding it to a fixed posture. The guide lock mechanism 9
Is a pin shaft-shaped actuating portion 67 projecting laterally of the mounting bracket 27 and a midway portion of the operating rod 61 at a position facing the actuating portion 67 so as to engage with the actuating portion 67. 8
0 and the guide surface 81 are formed into a hook shape for holding the posture-maintaining guide member 8, and the fixed claw 60 can receive the fixed rod 22 that rotates downward from the upper maintenance work posture (the reception posture). ), The posture is held so as to be guided to the sandwiched fixed posture.

That is, as shown in FIG. 5A, the fixed claw 60 in a state in which the straw conveying device 2 is in the maintenance work posture.
In the open posture (fixing release posture), the operating portion 67 of the mounting bracket 27, which rotates in the same direction as the straw conveying device 2 opens, is integrated through the fixed pawl 60 and the operating rod 61 in the open posture. The guide member 8 is brought into contact with the regulation surface 80, and is held in the same posture against the biasing force of the spring 66. Therefore, even if the fixing release lever 3L is released in this state, the fixing claw 60 can stably maintain the above posture, and the raising operation of the handling room case 3 and the straw conveying device 2 can be smoothly performed. There are advantages such as being able to. Then, when the straw-conveying device 2 is returned and rotated from the maintenance work posture to the threshing work posture, the rotation of the mounting bracket 27 around the fulcrum shaft 33 causes the rotation of the attachment bracket 27 as shown in FIG.
As shown by, the operating portion 67 is provided on the regulating surface 80 of the guide member 8.
Since the lower guide surface 81 is moved so as to contact and support (regulate and hold), the fixed claw 60 is gradually rotated to the fixed side by the urging force of the spring 66 at this time. Since it is still in the open position for receiving, the fixed rod 22 is smoothly introduced into the hook portion of the fixed pawl 60.

Then, when the straw conveying device 2 is further rotated downward, the actuating portion 67 is in a position where the guide member 8 is not regulated and held, as shown in FIG.
Is brought into a fixed posture by the urging force of the spring 66, and the fixed rod 22 can be pinched and fixed between the fixed rod 22 and the seat 65 formed in the extension of the fulcrum shaft 33 shown in FIG. Therefore, the straw conveying device 2 provided with the rotation fulcrum (the installation position of the accommodation support mechanism 2b) at the position deviated rearward from the rotation fulcrum of the handling room case 3 is the handling room case by the lock mechanism 5. Even if it operates at a timing slightly later than the locking operation of No. 3, the fixing rod 22 is received and guided to the original fixed posture by the fixing claw 60 that is locked separately from the lock mechanism 5 independently. Since it can be automatically clamped and fixed, both can be stably and promptly fixed to the threshing work posture even if the handling chamber case 3 and the straw transfer device 2 have different timings of lock operation. At the same time, the structure for connecting the lock mechanism 5 and the fixing mechanism 6 can be simplified without requiring complicated adjustment or structure.

The threshing machine configured as described above conveys and clamps the root side of the grain culvert by the feed chain 10 in a combine operation in which the handling room case 3 and the straw conveying device 2 are in the threshing work posture. The tip side is threshed in the handling room 11, and the threshed straw is transferred from the feed chain 10 to the straw carrier device 2 to be pinched and conveyed outside the machine and discharged. In such a threshing operation, when the waste straw is entangled with the handling barrel 12 or the handling chamber 11 is clogged, or the straw transfer device 2
If a jamming of straws occurs in the machine and the user wants to perform these maintenance operations, the lock release mechanisms 3a and 5 in the front and rear of the handling room 11 cause the threshing lower machine frame of the handling room case 3 when the fixing release lever 3L is moved upward. Since the lock mechanism 5 on the outlet side plate 32 side unlocks the fixing mechanism 6 of the straw conveying device 2 linked to the lock mechanism 5 on the outlet side plate 32 side, the handling chamber case 3 and the straw conveying device 2 are fulcrum respectively. The shaft 33 and the interchange support mechanism 2b can be rotated upward with respect to the fulcrum.

As a result, both of them are switched to the maintenance work posture described above, and the support lock mechanism 5b automatically opens and supports the maintenance work posture, so that the maintenance work can be easily performed from this portion that is widely opened. it can. After the maintenance work is completed as described above, the support release lever 57L is pulled down to release the opening support, and the handling chamber case 3 side is lowered, and the handling chamber case 3 is rotated downward. The straw transfer device 2 also descends to the normal straw transfer position, and the handling chamber case 3 is automatically fixed to the threshing lower machine frame 1a side by the lock mechanism 5, and the straw transfer device 2 is fixed by the lock mechanism. It is possible to perform the threshing work smoothly again by automatically performing the threshing work independently of the No. 5 by the fixing mechanism 6 and stably supporting both of them in the original threshing work posture.

At this time, the fixing structure of the straw conveying device is such that the lock mechanism 5 on the side of the handling chamber case 3 and the fixing mechanism 6 on the side of the straw conveying device 2 can be simultaneously released by the fixing release operation of the fixing release lever 3L. Handling room case 3
The lock mechanism 5 is used to fix the straw conveyor 2 and the straw conveyor 2 when they are rotated downward.
The lock member 51 and the fixing claw 60 of the fixing mechanism 6 can be automatically performed, respectively, and there is an advantage that they can be accurately connected with each other with a simple configuration.

That is, when the lock release member 3L is operated to rotate the lock member 51 of the lock mechanism 5 in the release direction, the elongated hole-shaped connecting portion 55 rotates the operating rod 61 via the connecting rod 56 and the connecting piece 61a. The fixing claw 60 of the fixing mechanism 6 is rotated to clamp and fix the fixing rod 22, and the locking mechanism 5 of the handling chamber case 3 is moved.
Since the connection is released together with the release, the handling chamber case 3 and the straw conveying device 2 can be quickly opened upward in a one-touch state together with the release operation of the fixing release lever 3L.

Further, when the handling room case 3 and the straw transfer device 2 are held in the maintenance work posture, the lock member 5
1 is rotated by the spring 53 and is in contact with the stopper 32b, and the fixed claw 60 of the fixing mechanism 6 receives the fixed rod 22 at the time of the downward rotation while keeping the released posture. Since the guide member 8 for holding the posture that enables the fixing of the fixing claw 60 is in the releasing position, the connecting end of the connecting rod 56 is in the free state position within the elongated hole of the connecting portion 55, and the releasing position of the fixing claw 60 is maintained. The locking operation at different timings at the time of closing of the handling room case 3 and the straw-conveying device 2 whose turning fulcrums are displaced is automatically performed individually without interfering with the fixing operation (locking operation) at the time of holding and closing. It can be carried out.

Therefore, when the maintenance work is completed, the support of the support lock mechanism 5b is released, and the handling chamber case 3 and the straw conveying device 2 are rotated downward to be closed, the handling chamber case 3 moves the fulcrum shaft 33. The hook portion 50 of the lock member 51 is automatically engaged with the fixing piece 54 and can be quickly fixed in the threshing work posture in accordance with the closing motion. Further, even if the straw conveying device 2 is rotated downward with the interchange support mechanism 2b, which is displaced rearward of the fulcrum shaft 33, as a fulcrum and is operated at a timing slightly delayed from the lock operation of the lock mechanism 5, the lock mechanism is also operated. Independently of 5, the fixing claw 60 of the fixing mechanism 6 is in the receiving posture against the spring 66 by the guide member 8 of the guide lock mechanism 9, and receives the fixing rod 22 to guide it to the original fixing posture. After that, the fixed rod 22
It has the feature that it can be clamped and fixed automatically.

Next, with reference to FIGS. 7 to 10, another embodiment of the fixing structure in the straw conveying apparatus of the present invention will be described. It should be noted that description of the same configurations and operations as those of the first embodiment will be omitted. First, the fixing mechanism 6 of the second embodiment of the present invention shown in FIG.
On the front surface of the fixed claw 60, a release posture guide surface 82 and a fixed posture guide surface 83 are formed cam-like projecting operation portions 67 as guide portions, and guide members slidably contactable with the operation portions 67. By projecting 8 from the operation rod 61 side,
Both constitute a guide lock mechanism 9.

That is, when the fixing release lever 3L is released from the fixing state, the fixing claw 60 and the guide member 8 are released and rotated in the solid arrow direction through the operating rod 61 as in the case of the first embodiment. Is set to a free state, the straw conveying device 2 can be rotated upward with the interchange support mechanism 2b as a fulcrum.
Then, the mounting bracket 27 mounted on the fulcrum shaft 33
Is rotated in the direction of the solid line arrow through the reinforcing connecting rod 26 as the handling chamber case 3 and the straw conveying device 2 are rotated upwards, and the guide member 8 causes the fixing member 60 to release the fixing claw 60.
By moving from the fixed posture guide surface 83 of FIG. 7 to the release posture guide surface 82 and contacting them, the fixed claw 60 is linked and switched to the state in which the posture is maintained in the release posture.

As a result, the fixed claw 60 is attached to the straw conveying device 2
When the fixed rod 22 is rotated downward, it can be held in a receiving posture that allows it to be fixed and can be fixed. When the fixed rod 22 rotates downward in the direction of the dotted line arrow and moves into the fixed claw 60, the mounting bracket 27 By the rotation in the direction of the dotted line arrow, the guide member 8 biased by the spring 66 and pressed against the release posture guide surface 82 is fixed.
3 to move the fixing claw 60 to the fixing rod 22 by the urging force of the spring 66 as in the first embodiment.
Can be pinched and fixed appropriately. Therefore, the first
Similar to the embodiment, the pivotal fulcrum of the straw conveying device 2 is provided so as to be offset from the pivoting fulcrum of the handling chamber case 3, and the fixed rod 22 provided on the straw conveying device 2 can be engaged and disengaged. The fixing claw 60 of the fixing mechanism 6 for fixing is connected to the lowering rotation of the handling room case 3 or the straw-conveying device 2, and the fixing rod 22 is properly set in the receiving posture, so that the returning operation to the threshing work posture is performed. In addition to being able to perform smoothly, the actuating portion 67 rotatably supported on the fulcrum shaft 33 brings the fixed rod 22 into the receiving posture, so that the fixing mechanism 6 is compactly installed and configured on the fulcrum shaft 33 portion. There are features such as being able to.

Next, a third embodiment of the present invention will be described with reference to FIGS. The fixing mechanism 6 includes a fixing claw 6
0 is provided with a guide portion 8a for switching and holding the straw conveying device 2 in the release position when the straw conveying device 2 is rotated downward, and the straw conveying device 2 is actuated in the releasing direction during the downward rotation to discharge straw. The guide lock mechanism 9 is configured by providing an operating portion 67 for guiding and fixing the transport device 2. That is, the fixing mechanism 6 shown in FIG.
a is integrally projected on the side surface of the fixed claw 60,
A cam plate-shaped actuating portion 67 is integrally attached to a portion of the fixed rod 22 facing the guide portion 8a, and the actuating portion 67 has a release surface 67a for pushing the guide portion 8a in the releasing direction at its tip.
Further, the release posture holding surface 67b having a smooth receding angle is formed on the upper surface continuous with this.

With this structure, when the straw releasing device 3 shown in FIG. 8 is fixed and the fixing release lever 3L is operated to raise and rotate the handling chamber case 3 and the straw transferring device 2, the fixing claw 6 is released.
As shown in FIG. 9 (A), 0 stands by at the position biased further inward than the fixed posture position by the biasing force of the spring 66 as the fixed rod 22 is detached. Then, as the straw conveying device 2 descends and rotates, the fixed rod 2
When 2 descends along an arcuate locus having the flexible support mechanism 2b as a fulcrum, as shown in FIG.
a contacts the guide portion 8a and pushes the fixed claw 60 in the releasing direction by the steeply inclined surface thereof, and then the guide portion 8a rides up to the release posture holding surface 67b side to release the fixed claw 60. Since it is temporarily held and forced into the receiving posture, the guide of the guide lock mechanism 9 is released after the fixed rod 22 is received, and the fixed claw is urged by the spring 66, as shown in FIG. The fixing rod 22 is smoothly clamped and fixed by 60.

Next, a fourth embodiment of the present invention shown in FIG. 10 will be described. As in the third embodiment, the fixing mechanism 6 is also provided with a guide portion 8a that allows the fixing claw 60 to switch and hold the releasing claw 60 in the released posture when the moving mechanism 2 moves downward. The guide lock mechanism 9 is configured by providing the actuating portion 67 that actuates the guide portion 8a in the releasing direction and guide-fixes the straw conveying device 2 during the downward rotation. That is, in the fixing mechanism 6 shown in the figure, the guide portion 8a is provided by forming the tip of the fixing claw 60 on a wide slope in the vertical direction, and the fixing rod 22 portion facing the guide portion 8a is directly provided. Working part 67
It has a simple structure such as. According to this configuration, in the figure, the fixing release lever 3L is operated from the fixed state of the fixed rod 22 shown by the solid line, and the handling chamber case 3 and the straw transfer device 2 are
As the fixed rod 22 is disengaged, the fixed claw 60 is attached to the inner side of the fixed posture position by the urging force of the spring 66 as in the third embodiment shown by the dotted line. Wait in the energized position.

In this state, when the fixed rod 22 descends along an arcuate locus with the interchange support mechanism 2b as a fulcrum with the downward rotation of the straw conveying device 2, the operating portion of the fixed rod 22 is shown by the dotted line in the figure. 67 contacts the guide portion 8a, pushes the fixed claw 60 in the releasing direction of the dotted line arrow against the biasing force of the spring 66 while slidingly contacting the slope, and temporarily holds the releasing posture of the fixed claw 60. After the fixed rod 22 is received, the guide of the guide lock mechanism 9 is released, and the spring 66 causes the fixed pawl 60 to clamp and fix the fixed rod 22 smoothly. The fixed rod 22 is provided with a sliding member made of a wear-resistant metal member or a bearing on the operating portion 67. Further, in the illustrated example, instead of the spring 66, the fixing claw 60 is biased toward the fixed posture side by a spring 66a that pulls and biases the connecting piece 61a.

[0037]

Since the present invention is constructed as described above, it has the following effects. The handling chamber case, which rotatably supports the handling barrel between the inlet side plate and the outlet side plate, is removably fixed to the lower threshing machine frame through the lock mechanism, and the fulcrum shaft on the back side of the machine is a pivoting fulcrum. As a result, the straw conveying device is supported so that it can rotate up and down, and the conveying end side is fixed to the threshing lower machine frame via a fixing mechanism while the conveying start end side is connected to the handling room case side. In the thresher configured to integrally rotate the handling chamber case and the straw conveying device up and down by the release operation of the lock mechanism and the fixing mechanism, a lock mechanism and a straw conveying device on the handling chamber case side The fixing mechanism on the side is linked so that it can be simultaneously released by the release operation of the release lever, and the fixing of the handling room case and the straw transfer device at the time of downward rotation,
With the lock member of the lock mechanism and the fixing claw of the fixing mechanism, each is automatically performed.
By releasing one fixing release lever, the handling room case and the straw conveying device can be quickly opened upward in one-touch state, and the locking mechanism can be used when the handling room case and the straw conveying device are closed. Even when the fixing mechanism and the fixing mechanism have different fixing timings, the locking operation of the handling room case and the straw conveying device can be individually and accurately performed. Therefore, it is possible to efficiently and easily perform the maintenance work of the handling room, the straw conveying device, etc., which is performed by moving the handling room case and the straw conveying device up and down together.

Further, the rotation supporting point of the straw conveying device is provided so as to be deviated from the rotation supporting point of the handling chamber case, and the fixing claw of the fixing mechanism for fixing the fixing rod provided in the straw conveying device in a disengageable manner. Is coupled to the lowering rotation of the handling room case or the straw conveying device so that the fixed rod is in the receiving posture, so that the turning fulcrum of the straw conveying device is displaced rearward with respect to the turning fulcrum of the handling room case. , Even if there is a timing difference in the lock operation at the time of the downward rotation of both, the fixed claw is linked to the downward rotation of the handling room case or the straw transfer device, and the support rod is automatically placed in the receiving posture to automatically move the support rod. Can be fixed to.

Further, the operating portion rotatably supported by the fulcrum shaft is operated by being linked to the downward rotation of the handling room case or the straw conveying device so that the fixed claw is brought into the receiving posture of the fixed rod. By doing so, the operation of the receiving posture of the fixing claw is surely performed, the fixing rod is smoothly received and automatically fixed, and
The connection structure of the fixing mechanism can be made simple and compact.

[Brief description of drawings]

FIG. 1 is a perspective view of a thresher having a fixing mechanism according to a first embodiment of the present invention.

FIG. 2 is a side view of the inlet side plate side of FIG.

FIG. 3 is a side view of the outlet side plate side of FIG.

FIG. 4 is a plan view showing a fixing structure of the handling room case and the straw transfer device of FIG. 1.

FIG. 5 is a side view showing a configuration and an action of a fixing mechanism, and FIG. FIG. 6B is a side view showing the receiving posture of the fixed claw shown in FIG. FIG. 6C is a side view showing a fixed posture of the fixed claw.

FIG. 6 is a plan view of an essential part showing a structure for connecting a lock mechanism and a fixing mechanism.

FIG. 7 is a side view showing the configuration of a fixing mechanism according to the second embodiment of the present invention.

FIG. 8 is a side view of a thresher having a fixing mechanism according to a third embodiment of the present invention.

9A and 9B show the structure and operation of the fixing mechanism of FIG.
[Fig. 6] is a side view showing a receiving posture of the fixed claw. FIG. 9B is a side view showing the fixing posture of the fixing claw shown in FIG.

FIG. 10 is a side view showing a configuration of a fixing mechanism according to a fourth embodiment of the present invention.

[Explanation of symbols]

1 thresher 2 Straw carrier 2b Flexible support mechanism 3 handling room case 3L fixing release lever 5 Lock mechanism 6 fixing mechanism 8 Guide member 8a Guide part 9 Guide lock mechanism 11 handling room 12 handle 17 Support frame 20 Transport frame 22 Fixed rod 27 Mounting bracket 32 Exit side plate 33 fulcrum axis 51 Lock member 54 fixed piece 55 connection 56 consecutive rods 60 fixed claws 61 Operation rod 66 spring 67 Actuator 67a Release surface 67b Release posture holding surface 80 Regulatory aspects 81 guide surface 82 Release posture guide surface 83 Fixed posture guide surface

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Akira Ota             Shimane Prefecture Yatsuka-gun Higashi Izumo-cho Ojiyacho 667             1 Within Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Noboru Nishikori             Shimane Prefecture Yatsuka-gun Higashi Izumo-cho Ojiyacho 667             1 Within Mitsubishi Agricultural Machinery Co., Ltd. (72) Inventor Rikiya Miyakoda             Shimane Prefecture Yatsuka-gun Higashi Izumo-cho Ojiyacho 667             1 Within Mitsubishi Agricultural Machinery Co., Ltd. F-term (reference) 2B092 AA01 AB04 BA02 BA08 BA12                 2B098 AC11 AE01 AG01 AJ05 AJ08

Claims (3)

[Claims] 1. A mechanism for locking a handling chamber case (3) in which a handling barrel (12) is rotatably supported between an inlet side plate (31) and an outlet side plate (32) to a threshing lower machine frame (1a). It is detachably fixed via (5), and is supported rotatably up and down with a fulcrum shaft (33) on the rear side of the machine body as a rotation fulcrum, and the straw conveying device (2) handles the conveyance starting end side. In the state of being connected to the chamber case (3) side, the transport end side is detachably fixed to the threshing lower machine frame (1a) via the fixing mechanism (6), and the lock mechanism (5) and the fixing mechanism (6) are provided. ), The thresher (1) configured to integrally rotate the handling chamber case (3) and the straw transfer device (2) up and down.
The lock mechanism (5) on the side of the handling room case (3) and the fixing mechanism (6) on the side of the straw transfer device (2) are fixed to the release lever (3).
L), the lock member (51) of the lock mechanism (5) is fixed to the lock chamber (5) when the handle chamber case (3) and the straw transfer device (2) are rotated downward while being linked so that they can be simultaneously released by the lock release operation. And the fixing claw (60) of the fixing mechanism (6) automatically perform the fixing structure of the straw conveying device in the threshing machine. 2. A fixed rod (22) provided on the straw-conveying device (2) while the pivotal fulcrum of the straw-conveying device (2) is provided so as to be offset from the pivoting fulcrum of the handling chamber case (3). The fixing claw (60) of the fixing mechanism (6) for releasably fixing the lever is connected to the downward rotation of the handling room case (3) or the straw transfer device (2) to bring the fixing rod (22) into the receiving posture. The fixing structure of the straw conveying device in the thresher according to claim 1. 3. An actuating part (67) rotatably supported by a fulcrum shaft (33) is actuated and fixed in association with the downward rotation of the handling room case (3) or the straw transfer device (2). Nails (60)
The structure for fixing the straw-conveying device in the threshing machine according to claim 1 or 2, wherein the fixing rod (22) is set in a receiving posture.