JPH0541652Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is used for a crimp net in a handling chamber of a threshing machine.

[Prior art]

Generally, the crimp net in the handling room is constructed by interweaving wire rods bent into a wave shape vertically and horizontally, but in order to provide the crimp net with durability, conventionally, hard wire rods or soft but thick wire rods were used. It is being Further, a technique for forming a synthetic resin coating layer on the entire surface of the receiving net is known from Japanese Utility Model Application Publication No. 53-29945.

[Problem that the invention attempts to solve]

However, as shown in Figure 5, when knitting hard or thick wire materials, it is impossible to increase the unevenness due to bending under a certain mesh, and the resistance given to the workpiece circulating in the handling chamber is small. There was a defect that this could not be sufficiently distributed.

In addition, the device described in the above-mentioned Japanese Utility Model Application Publication No. 53-29945 uses a synthetic resin coating layer such as epoxy resin to prevent straw debris from adhering to the receiving net, and also makes the receiving net slippery to receive the net. This reduces wear on the net itself, but since the synthetic resin coating layer is soft and has an extremely slippery surface as mentioned above, even if the object to be treated comes into contact with it, it must be sufficiently treated. In addition, the synthetic resin coating layer must be thick to maintain its strength against contact with the object to be treated, and therefore the wire diameter of the receiving net is large. As a result, the mesh size of the receiving net becomes smaller, and the effective leakage area of the receiving net becomes narrower, resulting in a decrease in grain leakage efficiency.

The technical problem of the present invention is to form a crimp net with large irregularities using a soft wire rod with a relatively small diameter, and harden the working surface by ceramic spraying to achieve a reception with excellent processing performance and wear resistance. It is to provide a net.

[Means for solving problems]

The crimp net in the handling chamber of the thresher according to the present invention, which was taken to solve the above problems, is as follows.

The receiving net 6 of the handling chamber 7 containing the handling cylinder 1 having a large number of handling teeth 1a is constructed by weaving vertical and horizontal wire rods formed in a wave shape, and the receiving net 6 faces the handling cylinder 1. This is characterized in that a wear-resistant layer 6a made of ceramic is formed by spraying ceramic only on the working surface.

[Effect]

The material to be processed generated in the handling chamber is reliably dispersed as it is resisted by the unevenness of the receiving net working surface while circulating in the handling chamber, and the grains that have become single grains quickly leak from the receiving net. In addition, since the wear-resistant layer made of ceramic on the working surface of the net has a high hardness and a moderately rough surface, the net has a high processing ability such as shedding ability and straw waste crushing ability for the object to be treated. Moreover, the receiving net has high wear resistance and corrosion resistance, and has high durability due to the hardening of the receiving net working surface.

〔Example〕

An example of the present invention will be described based on the drawings.
Reference numeral 1 denotes a handling barrel of a threshing machine, which has a large number of handling teeth 1a on its outer periphery, is pivoted on a handling barrel shaft 2 with a grain culm supply side at the front and a high slope at the rear discharge side, and has a front wall 3, It is housed in a handling room 7 surrounded by a rear wall 4, a top plate 5, and a receiving net 6. A handling port 8 is opened on one side of the handling chamber 7, which communicates a supply port 3a provided on the front wall 3 with a discharge port 4a provided on the rear wall 4. A rail 10 is installed. Further, a part of the terminal end side of the receiving net 6 is cut out to form a dust inlet 11 communicating with the processing injection port 12. A processing cylinder shaft 13 is pivotally supported in the processing injection 12 in a direction parallel to the processing cylinder shaft 2, and its dust feeding port 1
An auger 14 is pivotally attached to the part facing the 1, and a processing cylinder 15 with a processing blade implanted on the outer periphery is attached to the rear part.
has been extended. Reference numeral 16 denotes a receiving net that surrounds the processing cylinder 15 to form the processing chamber 12 and is provided to rotate.The receiving net 16 is stretched over link gears 17 provided at both the front and rear ends of the receiving net. It protrudes rearward from the rear link gear 17, and this part serves as a dust discharge port 18.

The upper machine link gear 17 meshes with a pinion 19 that is pivotally supported on the outside thereof, and a pulley provided at the end of the pinion shaft 19a and a pulley provided on the processing barrel shaft 13 are interlocked and connected by a belt 20. As a result, the dust supplied from the dust port 11 is transferred to the processing cylinder 15 section via the auger 14, where it is processed and distributed between the processing cylinder 15 and the receiving net 16 rotating in the opposite direction. The grains leak out and are supplied to the middle part of the sorting chamber 21 formed from the bottom to the rear of the handling chamber 7, and the remaining dust is sent to the dust discharge port 18.
The liquid is discharged from there to the rear half of the sorting chamber 21.

The sorting room 21 has a fan 22 installed below the handling room 7.
A wind channel is formed that blows through the dust exhaust port 23 at the rear of the aircraft, and below the wind channel there is a first receiving gutter 24,
An auxiliary fan 25 and a second receiving gutter 26 are provided, and a suction fan 27 is provided above the air selection path facing the dust discharge port 18.

Reference numeral 28 denotes a swinging sorting body supported in the sorting chamber 21 so as to swing back and forth, and a transfer plate 29 below the receiving net.
And the sorting shelf 30, the first sorting shelf 31, extended to this,
It is composed of a first receiving gutter 32, a second sorting shelf 33, a second receiving plate 34, and the like.

On the other hand, objects to be processed such as ear cuts and long straw generated during threshing in the handling chamber 7 are separated from the grain culms by the handling tooth 1a.
As the grain circulates in the handling chamber, it is strongly resisted by the receiving net working surface, which has a rough surface with large irregularities and no slippage, and most of the material to be processed is dispersed here, and the grains leak out from the receiving net 6. . The remaining straw waste and some of the grains contained therein are supplied to the processing chamber 12 through the dust inlet 11.

In the embodiment of the present invention, a case is shown in which the receiving net 6 of the handling chamber 7 is coated with ceramic, but the present invention is not limited to this, and the receiving net 16 of the treatment injection 12 may be coated with ceramic. Of course.

[Effect of idea]

In this invention, the receiving net in the handling chamber is constructed by weaving vertical and horizontal wire rods formed in a wavy shape, and a wear-resistant layer is formed by spraying ceramic on the working surface facing the handling cylinder. Abrasion and corrosion of the net can be prevented as much as possible, and the working surface of the receiving net can be hardened with ceramic to increase its durability.

In addition, by using a soft wire rod with a relatively small diameter for the receiving net, it is possible to form large irregularities on the working surface, and a wear-resistant layer (ceramic layer) made of ceramic can be used.
By increasing the hardness of the working surface and making the surface moderately rough, it is possible to improve the processing performance such as the ability to remove grains and the ability to subdivide straw waste for the material to be processed in the handling chamber.

Moreover, since the wear-resistant layer is made of ceramic, it has sufficient durability even if it is a thin layer, and the actual wire diameter of the receiving net does not become particularly thick, thus forming a wear-resistant layer. However, as a result, the mesh size of the receiving net is less likely to become smaller, and the substantial leakage area of the receiving net is less likely to be narrowed, and sufficient grain leakage performance can be obtained.

Furthermore, by spraying ceramic, it is possible to form a wear-resistant layer only on the working surface of the receiving net, and the wear-resistant layer can be formed efficiently and at extremely low cost.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a side sectional view of the threshing machine, Fig. 2 is a plan sectional view thereof, Fig. 3 is a rear sectional view, and Fig. 4 is a main view. A partial sectional view, FIG. 5, is a conventional example diagram corresponding to FIG. 4. 6... Reception net, 6a... Wear-resistant layer, 7... Handling room.

Claims (1)

[Scope of utility model registration request] The receiving net 6 of the handling chamber 7 containing the handling cylinder 1 having a large number of handling teeth 1a is constructed by weaving vertical and horizontal wire rods formed in a wave shape, and the receiving net 6 faces the handling cylinder 1. A crimp net for a handling chamber in a thresher, characterized in that a wear-resistant layer 6a of ceramic is formed by melting ceramic only on the working surface of the threshing machine.