JP3361703B2 - Threshing machine handling room opening and closing device - Google Patents

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, a handling room case in which a handling barrel is rotatably mounted on an interior shaft is rotated upward with a fulcrum shaft provided in a lower case as a center of rotation so as to open the handling mouth side, and thereby the handling room is closed. Threshing machines that have been designed to perform cleaning and maintenance work are already known, and the handling room case of such threshing machines releases the locking means provided between the threshing machine and the lower case when performing maintenance work. Then, the threshing posture is switched to the upward movement posture (maintenance posture) in which the handling case is lifted and rotated, and at the same time, the rod-shaped support member housed between the two is pulled out, and this is handled. It is configured to carry out maintenance work while holding the handling room case in the upward movement posture by straddling and supporting it between them.

[0003]

However, in the above-mentioned conventional structure, the supporting member housed in the rear side of the threshing machine is pulled out in a state where the handling room case is lifted, and the positioning member is positioned between the supporting case and the lower case. What to do, and when returning the handling case to the threshing posture at the end of maintenance work, insert the other hand into the back while supporting the handling case with one hand and remove the support member. There are drawbacks such as a complicated operation of rotating the handling room case and an unstable working posture, such that the handling room case must be moved down while being released and stored.

[0004]

In order to achieve the above object, a threshing machine handling chamber opening and closing device according to the present invention is a handling chamber in which a handling barrel is mounted between an inlet side plate and an outlet side plate and the upper side thereof is covered with a top plate. A threshing machine that forms a case and is vertically rotatable about the fulcrum shaft of the handling room case or the top plate,
A support mechanism for holding the upward movement posture of the handling chamber case is provided, and a handling port cover is provided on the handling chamber case or the top plate to cover an upper portion of a feed chain provided along the handling port. One side is integrally provided with an operation lever for releasing the support mechanism.

Further, the supporting member of the supporting mechanism is pivotally supported on the handling room case or the top plate, and the supporting member is urged toward the engaging portion side provided on the fixed side, so that the handling room case or the ceiling plate. It is characterized in that the support member is automatically engaged with the engaging portion in the upward moving posture of the plate.

Further, it is characterized in that the pivotal support portion of the support member of the support mechanism is provided close to the fulcrum shaft.

[0007]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described with reference to the drawings. A shown in FIG. 1 is a combine, and the combine A is mounted on a machine body (traveling machine body) 1 having a crawler type traveling device 1a so that a reaper 2 can be lifted and lowered.
The thresher 3 according to the present invention is mounted on the left side of the machine base 1 at the rear part thereof, and the control section 4 including the control section panel section 4a and the seat 4b is disposed on the right side, and behind the control section 4. The grain tank 5 provided with the discharge auger 5a is installed, and the grain culms cut by the mowing unit 2 are supplied to the threshing machine 3 for threshing, and the grains that have been threshed and sorted are passed through the fried cylinder 3Y. The straw is stored in the Glen tank 5, and the straw is processed and discharged by the straw processing unit 3S installed at the rear part of the threshing machine 3 so that a series of harvesting work can be smoothly performed.

In the threshing machine 3, the handling chamber 3a is provided with the inlet side plate 6a.
And the outlet side plate 6b between the handling cylinder 6K and the handling chamber case 6 in which the handling cylinder 6K is rotatably mounted on the inside.
A main body machine frame (lower case) 30 in which c is stretched has a frame structure so as to form a handling port 3d through which a grain culm passes, and the handling room case 6 is the inner side of a lower case 30 which is a machine frame on the fixed side. Above the side (counter handle side), the fulcrum shaft 31 supported by the support frame 31a is provided as a center of rotation so as to be swingable up and down so as to open the handle port 3d side, and the lower case 30 is provided.
On the side, a feed chain 3F is stretched along the lower side of the handling port 3d, and a holding rail 3K facing the transport surface of the feed chain 3F is attached to and supported by the handling chamber case 6. Further, below the rocking sorting body 3b, the first gutter 32 in which a spiral body for transferring the grains toward the side of the fried grain barrel 3Y is provided is arranged.

Then, between the inlet side plate 6a and the outlet side plate 6b and the lower case 30, a supply port 33 leading to the handle port 3d is provided.
The discharge port 33a is formed, and the handling chamber case 6 is detachably fixed to the lower case 30 via a lock member 70 of a lock mechanism 7 described later at a rear side portion thereof. An urging member 7a such as a damper cylinder is interposed between the handling chamber case 6 and the lower case 30 to release the lock mechanism 7 from being fixed.
When moving up and opening, the handling chamber case 6 is urged in the opening direction so that it can be easily lifted and rotated.

The handling chamber case 6 includes the handling barrel shaft 3 of the handling barrel 6K.
The inlet side plate 6a and the outlet side plate 6b that pivotally support 0a are connected by a top plate 6c at the upper portion, and the handle side wall frame 6 is used.
The housing frame body is opened at the lower side by connecting at d and connecting at the back side with the back side wall frame 6e. And FIG.
As shown in (B), the inlet side plate 6a and the outlet side plate 6b are formed by a double wall, and the mounting arm 31a rotatably fitted and attached to the fulcrum shaft 31 is inserted into the double wall. At the same time, the mounting arm 31a is clamped and fixed by a double wall by three mounting screws 6N shown in the figure. still,
One of the three mounting screws 6N is made to project rearward from the outlet side plate 6b, and is used as a stopper 90 for a support mechanism 9 described later.
Is also used as a support pin (pivot portion) 6P for pivotally supporting.

Further, as shown in FIGS. 3 and 4, the handle wall frame 6d has a lock mechanism 7 provided at the front and rear of the handle chamber case 6.
The mounting brackets 60 and 60 formed of plate-shaped pieces having an inverted U-shape when viewed from the side are provided at the positions where both lock levers 7L are located, and the screw holes (mounting portions) 61 provided in the mounting bracket 60 are provided in the mounting brackets 61. A handle opening cover 63, which is formed in a L-shape when viewed from the side by a synthetic resin material, is detachably attached via a mounting screw 62, and the feed chain 3 is attached by the handle opening cover 63.
The upper part of F and the sandwiching rail 3K is covered with the top plate 6c with substantially the same width. In addition, a guide piece 63G for guiding and guiding the grain culverts in contact with the plant root side is integrally formed at the rear end of the lower edge portion (grain culm transfer direction end portion) of the handle cover 63 so as to project. The guide piece 63G wraps with the starting end of the straw passage side plate 39 which covers the side of the culm processing section 3S following the handle cover 63, and smoothly transfers the grain culm to the root side in this section. By doing so, it is possible to favorably prevent the grain stems from being caught or excessive conveyance resistance from being generated at the starting end portion of the straw passage side plate 39.

An inverted L-shaped guide groove 65 is formed in the inclined surface of the mounting bracket 60 so that the lock lever 7L can be operated and guided, and the guide groove 65 is provided at a corresponding portion of the handle cover 63. A lock lever 7L, which has a through hole 66 wider than that of the handle chamber case 6 and is pivotally supported on the upper side of the handle opening side of the handle chamber case 6, can be vertically rotated while the guide groove 65 and the through hole 66 are inserted. With this configuration, the through hole 66 of the handle cover 63 formed of a synthetic resin material is prevented from coming into contact with the lock lever 7L and being worn away, and the guide operation is accurately performed by the mounting bracket 60. The handle cover 63 has an appropriate mounting piece 60 on the handle wall frame 6d at the middle portion of both mounting brackets 60, if necessary.
A is provided to attach and reinforce.

Further, as shown in FIG. 2, the top plate 6c is
At a position close to the outer side of the inner side wall frame 6e at the counter-handle opening side, that is, the rear side end, a top plate cover 10 having substantially the same length as the top plate 6c is provided with a plurality of rotation supporting portions (hinge portions) 11 interposed therebetween. The top plate cover 10 is rotatably attached and supported, and the width of the top cover 10 is extended further to the back side than the back side wall 3e of the threshing machine 3, and the control section 4 or the Glen tank 5 adjacent to the threshing machine 3 is used. By covering the formed space portion as wide as possible from above, it is possible to prevent dust that is blown out or scattered from the joint between the handling chamber case 6 and the lower case 30 or a minute gap in the inner side wall from flying up. It is configured so that it does not reach the control unit 4 side.

The top plate cover 10 is detachably attached to an attachment portion (attachment piece) 12 provided by using an attachment arm 31b located at the front and rear of the top cover 10 by an attachment tool (attachment screw) 13. As shown by the dotted line in the figure, by loosening the mounting screw 13, the top plate cover 10 is turned toward the upper handle side to pivot about the hinge portion 11 and the inner side wall 3 is rotated.
The space of the e portion can be widely opened. In this state, the straw cutting blade 15 located in the space
Also, the maintenance work of the transmission mechanism (not shown) and the like can be favorably performed. The straw cutting blade 15 is connected to the trailing end of the receiving net 3c and is continuously connected to the handling room 3a as in the conventional one.
The straw cutting blade 15 is provided so as to project inward, and in this embodiment, the straw cutting blade 15 is detachably attached to the attachment frame 30a formed on the upper side wall 3e of the handling chamber case 6 from the outside by the attachment screw 16. I am trying.

In the threshing machine 3 as described above, the above-mentioned lock mechanism 7 has the inlet side plate 6a and the outlet side plate 6 of the handling chamber case 6.
Between the b and the lower case 30, it is configured as shown in FIGS. That is, the lock mechanism 7 has a lock pin 71 projecting from the lower case 30 at the back side of the handling chamber 3a, and has a hook-shaped engaging portion 70a that engages with the lock pin 71 in a disengageable manner. The lock piece 70 formed in a V shape is rotatably supported by a support shaft 72 projecting from the side surfaces of the inlet side plate 6a and the outlet side plate 6b of the handling chamber case 6, and the lock piece 7 is provided.
0 and the lock lever 7L are connected via a link rod mechanism 73.

As a result, when the lock lever 7L is positioned below the above-mentioned guide groove 65 in a solid line state, the lock piece 70 engages with the lock pin 71 to fix the handling chamber case 6 to the lower case 30. When the lock lever 7L is rotated upward as shown by the dotted line and locked in the hook-shaped groove at the upper end of the guide groove 65, the lock piece 70 is a lock pin 7
The engagement with 1 can be released, and the handling chamber case 6 can be switched to the maintenance posture (upward posture) in which the handling chamber case 6 is lifted and moved upward by hand.

In the maintenance posture described above, the support member (stopper) 90 provided on the handling chamber case 6 of the support mechanism 9 described above is automatically transferred to the stopper pin (engagement portion) 91 projecting on the lower case 30. By engaging, the handling room 3
It is possible to easily and surely support the maintenance posture in which the upper part of a is largely opened. Also,
The operation of releasing the supporting state of the handling chamber case 6 can be easily performed from the handling port side by connecting the operation lever 9L provided on the handling port side and the stopper 90 via the connecting member (wire) 99. I am able to do it.

That is, the support mechanism 9 is constructed as shown in FIGS. The stopper 90 is in a hanging posture in a state of being pivotally supported by the support pin 6P described above, and the stopper pin 91 is provided inside the lower end portion of the plate-like rod.
A spring 95 attached to an appropriate position of the outlet side plate 6b is formed by forming a locking portion 92 that can be engaged with the recessed portion, forming an arcuate operation groove 93 around the support pin 6P in the upper end portion.
The lower side of the support pin 6P of the stopper 90 is pulled and urged in the engaging direction.

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

On the other hand, the operating lever 9L is sandwiched between the handle cover 63 and the grip rail 3K which is attached to the handle wall frame 6d above the feed chain 3F at the approximate center of the front-rear width (FIG. 4). The rail support frame 67, the mounting bracket 60 described above, or the mounting frame (not shown) appropriately provided from the handle wall frame 6d is rotatably mounted in a downward posture, and the length of the operating lever 9L is normally set. In the posture, the handle cover 63 is prevented from protruding from the lower end.

As a result, the operating lever 9L is installed inside the handle cover 63 on the handle side, and in the threshing work posture of the handle case 6, the feed chain 3F and the transport of the grain culms are carried by the sandwiching rail 3K. The posture in which the operating lever 9L is prevented from contacting or being caught by the operating lever 9L protruding outside the machine and the lock mechanism 7 is released to move the handling room case 6 upward without hindering In this case, the support mechanism 7 can be easily operated from below the widely opened handling port cover 63, and the operation lever 9L can be inadvertently operated in the maintenance posture in which the handling chamber case 6 is moved upward. I try not to.

The threshing machine 3 constructed as above is shown in FIG.
As shown in FIG. 3, the lock lever 7L and the operating lever 90
In the state of being switched and fixed to the threshing work position indicated by the solid line, the threshing work posture in which the lock piece 70 of the lock mechanism 7 is engaged with the lock pin 71 by the lock lever 7L and the handling chamber case 6 is fixed to the lower case 30. The threshing work can be satisfactorily performed because it is accurately fixed. At this time, since the stopper 90 of the support mechanism 9 is rotatably supported by the wire 99 and the spring 95 without being in contact with the stopper pin 91 in a state of being pivotally supported by the support pin 6P, the thresher 3 It is supported in an appropriate support and standby posture without producing contact noises or the like due to body vibration or the like.

Then, the handling room case 6 is moved upward to raise the handling room 3a.
When performing maintenance work inside the threshing machine 3 by opening the upper part of the above, the lock lever 7L is pivoted upward along the guide groove 65 of the mounting bracket 60 to which the handle cover 63 is attached as shown by the dotted line. When operated and locked in the hook-shaped groove at the upper end, the lock piece 70 releases the engagement with the lock pin 71. In this state, the handling chamber case 6 is lifted by both hands to open and move upward to perform the maintenance posture. Can be switched to.

When the handling chamber case 6 is moved up about the fulcrum shaft 31 as described above, the stopper 90 of the support mechanism 9 is pushed up against the stopper pin 91 by the spring 95 and is displaced upward together. In the maintenance posture position of the handling room case 6, the locking portion 92 is locked by the spring 95.
The handling pin 6 is automatically engaged with the stopper pin 91 by the urging force and its own weight to support and fix the handling chamber case 6 to the lower case 30 through the stopper 90, and the maintenance posture in which the upper portion of the handling chamber 3a is largely opened is simple. In addition, since the changeover can be surely held, the maintenance work can be performed well.

At this time, as shown in FIG. 3, the stopper 90 is rotationally displaced to the supporting posture, and as a result, the hook portion 99a of the wire 99 attached to the handling chamber case 6 has an operating groove of the stopper 90. The hook 99a slides in 93 and is positioned so as to be released to the other end, and the hook 99a
By being pulled by 6, the bending of the wire 99 is prevented so that the next supporting release operation can be performed without any trouble. Further, since the stopper 90 is provided with its pivotal support portion (support pin) 6P at a portion close to the fulcrum shaft 31 in the handling chamber case 6, the support mechanism 9 can be provided without increasing the length of the stopper 90. Since it is compactly installed on the back side portion, the handling room case 6 can be accurately supported in the maintenance posture without obstructing the transportation of the grain culms or hindering other mechanisms.

When the handling room case 6 is returned to the original threshing work posture at the end of the maintenance work,
The operator pulls the operating lever 90 exposed inside the handling port cover 63 with the other hand while supporting the handling chamber case 6 with one hand from the handling port side, so that the springs 95, 96 are moved to the springs 95, 96 via the wire 99. In contrast, the stopper 90 can be removed from the stopper pin 91 to easily release the support of the support mechanism 9. At the same time, the operation lever 90 is released to support the vicinity thereof, and the handling chamber case 6 is stably lowered with both hands. When the handling chamber case 6 is moved down to a predetermined position, the lock levers 7L and 7L on both sides are rotated downward along the guide groove 65, whereby the lock mechanism 7 is rotated.
The lock case 70 of the lower case 3
With respect to 0, it can be easily and surely fixed in the threshing work posture, the maintenance work can be efficiently performed, and the good threshing work can be performed again.

In such work, the operating lever 9L
Is operably provided inside the handle opening cover 63 without being exposed, so that the operation lever 9L does not hinder the transfer of the grain culm transferred by the feed chain 3F in the threshing work posture. It is possible to prevent contact of the human body and catching of clothes and the like due to the protrusion to the outside, and also to prevent accidental operation of the operation lever 9L even in the maintenance posture in which the handling room case 6 is moved upward. There are advantages such as being able to.

The operating lever 9L is provided with the handle cover 6
Since it is provided inside 3 at a substantially central portion of the front-rear width, it can be easily operated by any right-handed or left-handed worker with good workability. It should be noted that the lock lever 7 </ b> L protrudes to the outside of the handle opening cover 63 through the outside of the handle opening cover 63 without forming the through hole 66 in the handle opening cover 63 when inserted into the guide groove 65 of the mounting bracket 60. It may be provided to do so. Further, although the present invention has shown the threshing machine 3 that performs maintenance work by rotating the handling port cover 63 up and down in this embodiment, the present invention is not limited to this, and the handling room case 6 is used as a fixed-side machine frame. In this state, a lock mechanism 7 is provided so as to fix the top plate 6c to the machine frame on the fixed side so that the top plate 6c can rotate up and down.
The present invention can also be applied to a thresher in which c is opened and closed to perform maintenance work in the handling room 3a.

[0029]

The present invention has the following effects by being configured as described above. According to the invention of claim 1,
Providing an operating lever that releases the support mechanism that holds the upward movement posture of the handling case or the top plate inside the handling cover that covers the upper side of the handling handle of the thresher allows the lever to protrude from the surface of the handling cover. Not to touch the human body or catch clothes, etc., and in the maintenance posture with the handling room case or the top plate raised, the lever can be visually recognized well even if it is not projected outward, and the lever is erroneously operated. Can be prevented.

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

According to the third aspect of the present invention, the pivotal support portion of the support member is provided in the vicinity of the fulcrum shaft, so that the support mechanism is compactly installed at the back side portion without increasing the length of the support member. In addition, the maintenance work inside the threshing machine can be easily performed without being hindered by the support member.

[Brief description of drawings]

FIG. 1 is a side view showing a combine equipped with a thresher according to the present invention. (B) is a plan view.

FIG. 2 is a front view showing a partial cross section of a main part of the thresher.

FIG. 3A is a rear view showing a partial cross section of a main part of the thresher. FIG. 6B is a plan sectional view showing the configurations of the outlet side plate and the support mechanism.

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

[Explanation of symbols]

3 thresher 3a Handling room 3d handle 3F feed chain 3K clamping rail 6 handling case 6a Entrance side plate 6b Exit side plate 6c Top plate 6d Handle wall frame 6K handle 6P support pin (pivot) 7 Lock mechanism 7L lock lever 9 Support mechanism 9L operating lever 15 straw cutting blade 30 lower case 31 fulcrum axis 60 mounting bracket 63 Handle cover 90 Stopper (support member) 91 Stopper pin (engagement part) 95 spring

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toru Itamochi 667 Isuya-cho, Higashi Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd. (56) Reference JP-A-9-238555 (JP, A) Kaihei 8-116767 (JP, A) Actual Kaihei 3-67521 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) A01F 12/00 A01F 12/16

Claims (3)

(57) [Claims] 1. A handling chamber case is mounted between an inlet side plate and an outlet side plate and the upper side thereof is covered with a top plate, and the handling chamber case or the top plate is vertically rotated around a fulcrum shaft. In the threshing machine that has been made possible, a support mechanism that holds the upward movement posture of the handling room case is provided, and a handling port cover that covers the upper side of the feed chain provided along the handling port in the handling room case or the top plate is provided. An operating lever opening / closing device for a thresher, which is provided integrally with an operating lever for performing a releasing operation of the support mechanism inside the handling port cover. 2. The handling room case or the ceiling plate by pivotally supporting the supporting member of the support mechanism on the handling room case or the top plate and urging the supporting member toward the engaging portion provided on the fixed side. The handling chamber opening / closing device of the threshing machine according to claim 1, wherein the support member is automatically engaged with the engaging portion in the upward movement posture of the plate. 3. A threshing machine opening / closing device for a thresher according to claim 1, wherein the pivotal support portion of the support member of the support mechanism is provided close to the fulcrum shaft.