JPH08214679A - Dust-proofing device in thresher - Google Patents

Abstract

PURPOSE: To provide the subject dust-proofing device designed to set up a dust- proofing membrane between a shaking separator and the fan case of a dust- exhausting fan to smoothly exhaust dust and improve separating and dust- exhausting performance. CONSTITUTION: This dust-proofing device is so designed that a suction transverse flow fan 52 is laterally set up under the second flow plate 65 of a shaking separator 6 and the upper part of the second flow plate 65 and the fan case 51 of the suction transverse flow fan 52 are linked to each other through a flexible dust-proofing membrane 10. A seal 9 is provided extendedly along the gap between the wall 1a of the thresher and the side plate of the shaking separator 6 and both sides of the membrane 10 are brought to the vicinity of or sliding contact with the wall 1a, thus closing from the rear the leak space formed between the upper part of the second flow plate 65 and the wall 1a and also above the seal 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dustproof device for a thresher that can be mounted on a harvester such as a combine harvester.

[0002]

2. Description of the Related Art A threshing machine that has been used to receive threshing threshed in a handling room by a swinging sorter installed in a sorting air passage formed by a blower fan and a dust-exhausting fan to sort out dust. In the above, it is known that a dust-exhausting fan is provided below the end portion of the swing selecting body.

[0003]

However, in the threshing machine having the above-mentioned conventional structure, the dust collecting fan is arranged in the lower portion of the end portion of the rocking sorter, so that the suction dust collecting efficiency can be improved. However, when the dust removal fan is composed of a suction cross-flow fan, the blown air is blown when dust that is repelled by the rotating suction cross-flow fan or when the suction cross-flow fan is reduced in rotation due to overload or the like. The dust discharged by the compressed air from the fan tends to scatter and enter the gap formed between the rocking sorter and the fan case, and the outside air is sucked in from this gap to perform proper sorting. Since it cannot form wind, it has problems such as good screening and hindering dust emission.

[0004]

In order to solve the above problems, the present invention provides a threshing machine in which a swinging sorting body is supported below the handling chamber along the machine walls of the threshing machine so as to be swingable in the front-rear direction. In the above, a suction cross-flow fan is laterally provided below the second flow plate provided between the side plates of the swing selection body, and the upper part of the second flow plate and the front upper part of the fan case of the suction cross-flow fan are arranged. They are connected by a flexible dustproof film.

Further, a gap is formed between the machine wall and the side plate of the rocking sorter to be closed along with a seal, and both sides of the dustproof film are brought close to or in sliding contact with the machine wall of the thresher. Thus, the leakage space formed on the seal provided between the machine wall and the side plate of the swing selection body is closed from the rear side.

Further, the partition plate is attached to the upper part of the second flow plate so as to be vertically adjustable, and the upper end of the dustproof film is attached in a sandwiched manner between the upper part of the second flow plate and the partition plate. There is.

[0007]

With the above-described structure, the upper portion of the second flow plate 65 of the rocking sorting body 6 and the suction cross flow fan 52 are disposed between the two machine walls 1a.
Flexible dustproof film 1 attached to the fan case 51 of
By setting 0, it is possible to prevent the dust discharged by the suction cross-flow fan 52 from scattering and entering the gap formed between the swing sorting body 6 and the fan case 51.
The scattered dust can be accurately returned to the dust exhaust fan 5 side, and can be favorably discharged by the dust exhaust fan 5. In addition, the dust-proof film 10 which is brought into close proximity to or in sliding contact with the machine wall 1a so as to close the leakage space h of the swing sorting body 6 from the rear side allows the sorted matter on the seal 9 to be collected and sorted without leaking. , The side of the dustproof film 10 attached to the swing selection body 6 is the upper end portion of the second flow plate 65, and the partition plate 11 also serves as a mounting member so that the dustproof film 10 can be detachably sandwiched and attached to easily attach the dustproof film 10. And it can be done accurately.

[0008]

An embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, A is a thresher that can be mounted on a machine base B equipped with a crawler type traveling device such as a combine, and a feed chain 3 is stretched in the front-rear direction along a handling room 2 formed in the machine body 1. At the same time, a straw transport belt 3a is continuously provided at the end portion so that the cut grain culms are supplied to the handling room 2 and the threshed grain culms are transported to the waste culm processing device (cutter) C installed in the rear part of the machine body 1. ing.

The threshing machine A has a handling barrel 2 which constitutes a handling chamber 2.
The processing drum 2c and the processing chamber 2e in which the processing net is installed are connected to the tip end side of the a and the handling net 2b, and the machine body 1 is located below them.
The installation space H is provided between the machine walls 1a and 1a on both sides in the sorting air passage F formed by the blower fan 4 and the dust exhaust fan 5 installed before and after the swing sorting body 6 can swing in the front-back direction. The first gutter 7 for accommodating the first item in the grain tank 7b under the swinging selection body 6 and the second item under the swinging selection body 6 through the reducing cylinder 7c. Second gutter 7 to be returned to the sorting body 6
d is arranged, and a blower fan 7e for blowing the sub-sorting air from below toward the Straw rack 64 of the swing sorting body 6 is provided between the two.

The dust-exhausting fan 5 installed at the rear of the machine body 1 has an opening formed in the rear part of both side machine walls 1a of the thresher A in a state where a drum-shaped suction cross-flow fan 52 is installed in a fan case 51. A fan case 51 is rotatably supported on the part K by a vertical axis 53 on the left side so as to be openable and closable to one side, and a right side is removably fixed to a machine wall 1a by a locking tool (not shown) to open. It is configured such that it can be switched to the open state in which the portion K is opened. An opening / closing cover 51a is provided on the rear upper part of the fan case 51 so as to be openable and closable rearward with the lower end as a fulcrum, so that the inspection and cleaning of the inside of the dust-exhaust fan 5 and the attachment / detachment of the dustproof film 10 described later can be easily performed. I am trying.

The culm processing device C is attached so as to be able to open laterally about the right vertical axis (not shown).
When opening the opening K, the dust-exhaust fan 5 and the dust-exhaust fan 5 are opened so as to open each other so that the rear part of the machine body 1 is widely opened without any obstacles, and the swing selection body 6 is inserted. The disassembling and assembling work is performed easily and efficiently, and the inside of the thresher A can be easily cleaned and the inspection and maintenance work can be performed.

Further, as shown in FIG. 4, the straw carrying belt 3
a is a one-way tensioning mechanism 31 for the idler wheel 30 on the transport end side.
Thus, it is possible to stretch the culm chain 32 at an appropriate pressure so as to correspond to the extension of the culm chain 32, and to regulate the contraction of the idler wheel 30 so that the straw can be smoothly conveyed. That is, the one-way tensioning mechanism 31 inserts the support block 35 having the stopper bolt 34 into the hole formed in the chain frame 33, and inserts the support rod 36 supporting the idler wheel 30 into the hole formed in the support block 35. At the same time, a tension spring 38 is interposed between the receiving seat 37 protruding from the support rod 36 and the support block 35 to tension the exhaust culvert chain 32. In addition, the regulation adjustment of the idler wheel 30 in the contracting direction,
The support rod 36 is provided with a restricting surface 36a that is deeply inclined in the direction of contraction, and the stopper bolt 34 is provided at an appropriate position on the restricting surface 36a.
It is done by restricting the pressing.

As shown in FIGS. 2 and 3, the oscillating sorting body 6 is provided with a transfer plate 61 and a chaff sheave 62 from the front between the left and right side plates 6a, and a filter body 8 below the chaff sheave 62. The lowermost flow plate 63 is provided below the first flow trough 7 to allow the first object to flow down.
A large number of Straw racks 64 are provided at the rear end portion, and a second flow plate 65 is provided below the second gutter 7d to flow down a second object.
Are installed diagonally to form an integrated framework. The swing selection body 6 has its front and rear portions supported by the support link 2.
0 and a drive mechanism (link) 21 and the like, a swinging support mechanism is detachably supported so that the swing selecting body 6 can be easily assembled and removed.

The rocking sorting body 6 has both side plates 6
Mounting pieces 6b bent outward along the upper edges of a and 6a
A flexible band-shaped seal 9 made of rubber or a plastic material is attached to the upper surface of the machine by an appropriate number of mounting bolts, and the free end side of the seal 9 is attached to the machine walls 1a, 1a.
By making a slidable contact with the upper part of the upper part, the installation space H formed between the rocking sorting body 6 and the machine wall 1a is closed to prevent the sorted material from leaking and falling.

Then, the sorting plate portion 65a at the upper part of the second flow plate 65 located behind the straw rack 64 is raised so as to be higher than the upper edge of the side plate 6a, that is, the mounting position of the seal 9, and the sorting plate is raised. Mounting bolt 65 planted in the portion 65a
The partition plate 11 that forms the selection point of the selection product in b is provided with the long holes 11a formed in the partition plate 11 by the mounting bolts 65b.
It is attached so that the above-mentioned selection point can be adjusted up and down by inserting it through and tightening with the nut 12. Then, a wide and thin plate-like dustproof film 10 formed of a rubber or a plastic material having flexibility and abrasion resistance is attached between the selection plate portion 65a and the dust removal fan 5. Thus, the gap formed between the both is closed to prevent dust from entering the gap.

That is, in the upper part of the front side of the fan case 51 of the suction cross flow fan 52 located below the second flow plate 65,
The lower end of the dustproof film 10 is detachably attached with a mounting screw 55, and the upper end of the dustproof film 10 is attached to the sorting plate portion 65.
It is sandwiched between a and the partition plate 11 so as to be detachably attached to close the above-mentioned gap, and both side ends of the dustproof film 10 are brought into close proximity with or slidably contact the machine walls 1a, 1a to sway with the machine wall 1a. A selected product including grains that is provided so as to close the leakage space h portion formed on the seal 9 provided between the side plates 6a of the dynamic selection body 6 from the rear side and that is oscillated and transferred on the seal 9 is selected.
At the same time, it is possible to prevent the leakage from the leakage space h directly onto the dust-exhaust fan 5 and scattering outside the machine.

The thresher equipped with the apparatus of the present invention configured as described above has a swinging / sorting body 6 for sorting the threshed grains threshed in the handling chamber 2 and the processing chamber 2e by the swinging motion and the wind sorting. The first thing to do is the first drift board 63 to the first gutter 7 and the fried cylinder 7a.
The second product after being stored and stored in the grain tank 7b via the straw rack 64 toward the sorting air passage F from the straw rack 64 and sorted, and the second product is discharged from the second flow plate 65 to the second gutter. 7d
And, it is returned to the front of the rocking sorting body 6 through the reducing cylinder 7c and re-sorted to collect the grain. In addition, dust such as debris generated inside the machine body is guided along the rear wall of the fan case 51 by the sorting wind formed by the blower fan 4 and the dust discharge fan 5, and is sucked by the dust discharge fan 5. It is discharged to the outside.

In such a threshing operation, the suction crossflow fan 52 is horizontally provided below the second flow plate 65 of the swing sorting body 6, and the upper part of the second flow plate 65 and the suction crossflow fan 52 are arranged. By connecting the front upper part of the fan case 51 with the flexible dustproof film 10, the dust particles repelled by the suction cross flow fan 52 rotating in the direction of the arrow are the swing sorting body 6 and the fan case 51. It is possible to accurately prevent scattering and invasion into the gap formed between the dust-proof film 10 and the dust-proof film 10 that swings the swing-selection body 6. By vibrating with it,
While being loosened, it is returned to the dust exhaust fan 5 side and is discharged well. Further, since the dustproof film 10 forms an airtight dust-exhaust air passage between the both machine walls 1a, 1a, it is possible to prevent the outside air from entering through the gap and improve the dust-exhaust performance, and the dust-exhaust fan 5 is also provided. There is an advantage that the installation position can be provided as desired, for example, it is provided under the second flow plate 6 in proximity.

Further, the dust-proof film 10 has its both sides brought close to or in sliding contact with the machine wall 1a, so that the rocking sorter 6 is provided.
It can also serve as a closing member for closing the leaking space h described above, with a simple structure, and from the leaking space h of the sorted substances on the seal 9 among the sorted substances sorted and transferred by the swing sorting body 6. Is prevented, and reduction induction as a second product is carried out in the rocking selection body 6, so that the selection product on the seal 9 is not directly sucked by the suction cross flow fan 5 and scattered outside the machine.

Further, the side of the dustproof membrane 10 to be attached to the swing sorting body 6 is located above the second flow plate 65, and the partition plate 11 for setting the sorting point also serves as a mounting member for the dustproof membrane 10. Since it is attached so as to be sandwiched as much as possible, the dustproof film 10 can be accurately attached to the width of the swing selecting body 6 with a simple configuration, and the swing selecting body 6 can be fixed to the support link 20 and the drive mechanism 21. When performing maintenance work such as cleaning and inspection / maintenance of the rocking sorting body 6 or the inside of the machine, which is performed by releasing the opening K to the outside of the machine, the dustproof film 10 can be easily attached / detached. it can.

[0021]

Since the present invention is constructed as described above, the following effects can be obtained. According to claim 1,
A flexible dust-proof film attached to the swinging sorting body and the fan case of the suction crossflow fan between the machine walls on both sides allows dust and the like to be repelled by the suction crossflow fan, and the swinging sorting body and the fan. It is possible to prevent the dust from scattering into the gap with the case, and to appropriately return the dust scattered on the dust-proof film to the suction cross-flow fan and discharge it well.
Further, the dustproof film can prevent the sorting air from leaking through the gap and improve the sorting and discharging performance.

According to the second aspect of the present invention, by providing both sides of the dustproof membrane in close proximity to or in sliding contact with the machine wall so as to close the leaking space of the rocking sorting body from the rear side, the sorted matter transferred on the seal is described above. Do not discharge directly from spill space.

According to the third aspect, since the dustproof film attached to the upper part of the second flow plate of the rocking / sorting body is detachably mounted by being sandwiched by the partition plates, the dustproof film is mounted by rocking / sorting. The body width can be made precise with a simple structure, and the dustproof membrane can be replaced and maintenance work can be easily performed.

[Brief description of drawings]

FIG. 1 is a sectional view of a thresher equipped with an embodiment of the present invention.

FIG. 2 is a side sectional view of an oscillating sorting body and a main part.

FIG. 3 is a front view showing a main part with a part broken away.

FIG. 4 is a partial cross-sectional view of the straw conveying device.

[Explanation of symbols]

 1 Airframe 1a Machine wall 2 Handling room 5 Dust fan 6 Swing sorting body 6a Side plate 9 Seal 10 Dust-proof film 11 Partition plate 51 Fan case 52 Suction cross-flow fan 65 Second flow plate 65a Sorting plate part A Threshing machine H installation space h Leakage space

Claims (3)

[Claims] 1. A thresher that supports an oscillating sorter swingably in the front-rear direction along a machine wall of the thresher below a handling room, and a second number provided between side plates of the oscillating sorter. A suction crossflow fan is provided below the flow plate, and the upper part of the second flow plate and the front upper part of the fan case of the suction crossflow fan are connected by a flexible dustproof film. Dustproof device for thresher. 2. A gap formed between the machine wall and the side plate of the rocking sorting body is closed along with a seal, and both sides of the dustproof film are brought into close proximity or sliding contact with the machine wall of the threshing machine. Due to
The dustproof device for a thresher according to claim 1, wherein a leakage space formed on a seal provided between the machine wall and the side plate of the swing sorting body is closed from the rear. 3. The partition plate is attached to the upper part of the second flow plate so as to be vertically adjustable, and the upper end of the dustproof film is attached in a sandwiched manner between the upper part of the second flow plate and the partition plate. Dustproof device for thresher.