JP2013051890A - Receiving net structure of threshing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a receiving net made of a metal plate that is superior in strength and can be manufactured relatively inexpensively, and that prevents objects such as dust from adhering to the back of the net when processing moist material, and prevents clogging due to the growth of dust, etc. adhered thereto.SOLUTION: The threshing device 1 includes: a threshing cylinder 4 rotatably disposed in a threshing chamber 2, and for threshing grains from grain culms fed into the threshing chamber 2; and a receiving net 6 disposed along a lower part of the threshing cylinder 4, and for leaking the grains threshed in the threshing chamber 2 to a lower side of the threshing chamber 2. The receiving net 6 is formed of a metal plate having a plurality of leaking holes 6a for leaking the grains. Only the back surface of the net that does not face an outer periphery of the threshing cylinder 4 is applied with water repellent treatment 6b.

Description

  The present invention relates to a receiving network structure of a threshing apparatus such as a combine.

  A threshing device such as a combine is provided with a handling cylinder for threshing the grains from the stalks fed into the handling chamber, and a receiving net for leaking the threshed grains in the handling chamber to the lower part of the handling room (sorting room) As a receiving net, a crimp net that combines steel wires in a grid pattern in length and width to form a number of leak holes, a punched net that has a number of holes formed in a metal plate, and a composite A resin net (for example, refer to Patent Documents 1 and 2) formed integrally with a resin is known.

Japanese Patent Publication No. 6-101967 Japanese Patent No. 3305934

  The receiving net made of a crimp net is not only excellent in strength but can be manufactured at a relatively low cost. However, branches and shavings are easily caught between vertical and horizontal steel wires. When processing a material (wetting material), there is a problem that clogging is likely to occur due to adhesion of debris.

  On the other hand, a receiving net made of a punched net is superior in strength and can be manufactured at a relatively low cost. When processing the material, the debris adhering to the back side grows (deposits) and eventually clogs the leakage hole from the back side.

  In addition, since the receiving net made of a resin net is excellent in water repellency, there is an advantage that even when a wet material is processed, there is little adhesion of debris and clogging hardly occurs, but there is a problem in strength. In addition, there was a concern that the manufacturing cost would increase due to the mold cost.

The present invention was created with the object of solving these problems in view of the above circumstances, and threshing the grain from the stems that are rotatably arranged in the handling chamber and supplied to the handling chamber A threshing apparatus comprising: a handling cylinder and a receiving net that is arranged along a lower side of the handling cylinder and causes the grain that has been threshed in the handling chamber to leak below the handling chamber; It is made of a metal plate material in which a large number of leakage holes are formed, and the water repellent treatment is performed only on the back surface side that does not face the outer periphery of the handling cylinder.
Further, the water repellent treatment is performed on the inner side surface of the leakage hole.

According to the first aspect of the present invention, the water-repellent treatment is applied to the back surface side that is not opposed to the outer periphery of the handling cylinder while being a metal net receiving net that is excellent in strength and can be manufactured relatively inexpensively. In the treatment of the wet material, not only can the adhesion of debris to the back surface side be suppressed, but also clogging due to the growth of the adhered debris can be prevented. Moreover, since the water repellent treatment is not performed on the surface side of the receiving net, not only can the processing cost be reduced compared to the case where the water repellent treatment is applied to both the front and back surfaces, but also a moderate slip on the surface side of the receiving net. A good threshing treatment can be performed with resistance.
Further, according to the invention of claim 2, since the water repellent treatment is performed on the inner side surface of the leakage hole, the adhesion of debris to the inner surface of the leakage hole is suppressed, and the possibility of clogging is further reduced. Can be made.

It is a schematic side view which shows the inside of a threshing apparatus. It is a schematic front view which shows the inside of a threshing apparatus. It is a perspective view which shows the surface side of a receiving net. It is a perspective view which shows the back surface side of a receiving net. It is principal part sectional drawing of a receiving net. It is sectional drawing of a dust exhaust fan.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2, reference numeral 1 denotes a threshing device. The threshing device 1 has a threshing feed chain 3 that sandwiches and conveys stems along the handling chamber 2 in a posture in which the tip side is introduced into the handling chamber 2. , Which is rotatably mounted in the handling chamber 2 and is provided along the lower outer periphery of the handling cylinder 4 and the handling cylinder 4 for threshing the grains from the stalks carried by the threshing feed chain 3. A receiving net 6 for allowing the grains to leak into the sorting chamber 5, and a processing chamber 8 provided on the side of the handling chamber 2 and communicated with the rear of the handling chamber 2 via a dust outlet (not shown), The processing chamber 8 is rotatably mounted, and is provided along the outer periphery of the processing cylinder 9 and a processing cylinder (processing cylinder) 9 that processes the processed material supplied from the processing chamber 2 to the processing chamber 8 into a single grain. A receiving net 10 for letting grains that have become single grains in the processing cylinder 9 leak into the sorting chamber 5 and a grain that is provided in the sorting chamber 5 and that leaks from the handling chamber 2 or the processing chamber 8 is swung. Oscillating sorter 11 to separate, the first sorter fan 12 which wind sorts the grain leaking from the shaking sorter 11, the most spiral 13 which accommodates the most thing, and the grain thing to the grain tank 14, a lifting and conveying cylinder 15 that lifts and conveys the second article, a second sorting fan 16 that wind-sorts the second thing, a second spiral 17 that accommodates the second thing, and the second thing on the swinging sorter 11 A second reduction cylinder (not shown) for reduction, a dust exhaust fan 20 that is provided in the dust chamber 19 and discharges debris such as shards to the outside of the machine, and a waste chain 21 that transports the threshed waste. And a cutter 22 that shreds the waste.

  As shown in FIGS. 1 and 2, the upper portion of the handling chamber 2 is covered with a freely openable / closable cylinder cover 23, and when the cylinder cover 23 is opened, the handling chamber 2 is opened. It is possible to clean, inspect, and maintain the handling cylinder 4 and the receiving net 6 that are provided. The handling cylinder 4 is a cylindrical member centered on the handling cylinder rotating shaft 24, and a plurality of handling teeth 25 project from the outer peripheral surface thereof. At the time of threshing, as the handle 4 rotates in a predetermined direction, the tooth-handling 25 handles the grain from the stalk.

  In order to efficiently thresh the grain in the handling chamber 2, it is necessary to impart an appropriate resistance to the treated product and to optimize the feed rate of the treated product (feed rate in the barrel rotation axis direction). For this reason, a plurality of dust feed guides 26 that adjust the feed rate of the treated product by contacting the treated product flowing in the treated chamber 2 can be changed in angle at the upper part of the handling chamber 2, that is, the lower surface side of the cylinder cover 23. On the other hand, a plurality of partition plates 27 are provided integrally on the lower part of the handling chamber 2, that is, on the surface side of the receiving net 6, to impart an appropriate resistance to the processed material flowing in the handling chamber 2. .

  The receiving net 6 is constituted by a punched net obtained by punching and forming a number of leakage holes 6a in a metal plate material. For example, the receiving net 6 of the present embodiment is formed by bending a metal plate material formed by punching rhomboid leakage holes 6a along the outer periphery of the handling cylinder 4, and the plurality of partition plates 27 described above on the surface side thereof. Are integrally provided, and a plurality of reinforcing plates 28 are integrally provided on the back surface side.

  The receiving net 6 made of a punched net is excellent in strength and can be manufactured at a relatively low cost, but has the advantage that there is less catching of branch stems and shavings than a crimp net, but a wet material In the case of processing, debris adhering to the back side grows (deposits), and eventually clogs the leakage hole 6a from the back side.

  In order to solve the above-described problems, the receiving net 6 according to the embodiment of the present invention is subjected to the water repellent treatment 6b only on the back surface side that does not face the outer periphery of the handling cylinder 4, as shown in FIG. Here, as the water repellent treatment 6b, a method of performing a water repellent process such as a fluororesin coating or a method of attaching an ultra high molecular resin can be suitably used.

  According to such a receiving net 6, the water repellent treatment 6 b is applied to the back side that does not oppose the outer periphery of the handling cylinder 4 while being made of a metal plate that is excellent in strength and can be manufactured relatively inexpensively. In the treatment of the wet material, not only can the adhesion of debris to the back surface side be suppressed, but also clogging due to the growth of the adhered debris can be prevented. Moreover, since the water repellent treatment is not performed on the surface side of the receiving net 6, the processing cost can be reduced as compared with the case where the water repellent treatment is performed on both the front and back surfaces. A good threshing treatment can be performed by imparting a good slip resistance. That is, as in the case where water repellent treatment is performed on the surface side of the receiving net 6, the problem that the processed material in the handling chamber 2 becomes easier to flow than necessary and the efficiency and accuracy of the threshing treatment is reduced is avoided. Can do.

  Moreover, in the receiving network 6 of this embodiment, the water repellent process 6c is given to the inner surface of the leakage hole 6a. If it does in this way, adhesion of debris with respect to the inner surface of leak hole 6a can be controlled, and the possibility of clogging can further be reduced.

  By the way, when processing the wet material, not only the receiving net 6 but also other parts are likely to adhere, and the attached refuse may adversely affect the threshing operation and the sorting operation. For example, in the dust exhaust fan 20 (suction fan) that discharges wastes such as swarf from the sorting chamber 5 to the outside of the apparatus, the dust attached to the back side of the fan blade 20a grows (accumulates), and the dust exhaust fan 20 There was a case where the air volume of the air was significantly reduced.

  In order to solve the above problems, the dust exhaust fan 20 according to the embodiment of the present invention is subjected to the water repellent treatment 20b only on the back side of the fan blade 20a as shown in FIG. Here, as the water repellent treatment 20b, a method of applying a water repellent process such as a fluororesin coating or a method of applying an ultra high molecular resin can be suitably used as in the case of the receiving net 6 described above.

  According to such a dust exhaust fan 20, not only the adhesion of debris to the back surface side can be suppressed during the processing of the wet material, but also a reduction in the air volume due to the growth of the adhered debris can be prevented. In addition, since the water repellent treatment is not performed on the surface side of the fan blade 20a, there is an advantage that the processing cost can be reduced compared to the case where the water repellent treatment is performed on both the front and back surfaces.

  According to the present embodiment configured as described, the barrel 4 is rotatably arranged in the handling chamber 2 and threshs the grain from the stems fed into the handling chamber 2. In the threshing apparatus 1 including the receiving net 6 that is arranged along the lower side and leaks the grain that has been threshed in the handling chamber 2 below the handling chamber 2, the receiving net 6 causes the grain to leak. It is made of a metal plate having a large number of leakage holes 6a, and the water-repellent treatment 6b is applied only on the back side that does not face the outer periphery of the handling cylinder 4, so that it is excellent in strength and can be manufactured relatively inexpensively. Although it is the receiving net 6 made of a metal plate, it is possible not only to suppress the adhesion of debris to the back side, but also to prevent clogging due to the growth of the adhering debris when processing the wet material. Moreover, since the water repellent treatment is not performed on the surface side of the receiving net 6, the processing cost can be reduced as compared with the case where the water repellent treatment is performed on both the front and back surfaces. A good threshing treatment can be performed by imparting a good slip resistance.

  Further, since the water repellent treatment 6c is applied to the inner surface of the leakage hole 6a, it is possible to suppress the attachment of debris to the inner surface of the leakage hole 6a and further reduce the possibility of clogging.

Needless to say, the present invention is not limited to the above-described embodiment, and can be appropriately changed within the scope of the claims.
For example, the water-repellent treatment is not limited to a method of applying a water-repellent process such as a fluororesin coating or a method of attaching an ultra high molecular resin, and other methods can be used as long as the water-repellent property can be imparted. It may be used.
Further, the present invention can be applied not only to a receiving network of a handling room but also to a receiving network of a processing chamber.

DESCRIPTION OF SYMBOLS 1 Threshing apparatus 2 Handling chamber 4 Handling cylinder 6 Receiving net 6a Leakage hole 6b Water repellent treatment 6c Water repellent treatment

Claims (2)

A handling cylinder that is rotatably arranged in the handling chamber and threshs the grains from the stems supplied to the handling chamber, and a grain that is arranged along the lower side of the handling cylinder and threshed in the handling chamber. In a threshing apparatus comprising a receiving net that leaks downward,
The receiving net is made of a metal plate material in which a number of leakage holes for allowing grains to leak is formed, and threshing is performed only on the back side that does not face the outer periphery of the handling cylinder. Equipment network structure.   2. The threshing device receiving net structure according to claim 1, wherein a water repellent treatment is applied to an inner surface of the leakage hole.

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