JPH0331136Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a grain culm raking device for a reaping harvester.

Conventionally, grain culm transport devices in reaping and harvesting machines such as combines have been composed of a grain culm transport chain disposed between a reaping section and a threshing section, and a raking foil is installed at the transport start side of this grain culm transport chain. Generally, a grain culm raking device consisting of a raking belt and a culm raking belt is provided.

However, in the conventional grain culm raking device, the driving sprocket, the raking wheel, and the driving pulley of the raking belt, which are provided at the starting end of the grain culm conveying chain, are extended in the vertical direction. Since it is fixed to the drive shaft, it requires a cylindrical body to protect the outer periphery of the drive shaft from wrapping around the grain culm, and also requires a long vertical drive shaft to connect the three parts, which reduces the number of parts. The disadvantage is that the structure becomes complicated as the number increases.

In order to eliminate these drawbacks, for example,
Publication No. 68720 is proposed. This conventional technology is
The disc-shaped member is driven by the contact friction of the rotating member from the shaft for driving the transport body, and the lower end of the cap-shaped body is fixed to the upper surface of the disc-shaped member with a mounting bolt, and a chain is attached to the circumference of the cap-shaped body. In addition to providing a drive sprocket, the starting end of the conveyor belt is wound around the recessed groove provided above the cap-shaped body, so the conveyor drive shaft can be shortened and the number of parts can be reduced. However, since the head of the mounting bolt that fixes the lower end of the cap-shaped body protrudes, straw waste generated from the grain culm being transported gets wrapped around the head of the mounting bolt that protrudes. The drawback was that it was difficult to remove.

Therefore, in view of the conventional situation mentioned above, the present invention is
It was devised to solve this problem, and by using a cylindrical body, a long drive shaft was not required, and
The purpose of this invention is to provide a grain culm conveying device for a reaping and harvesting machine that can prevent straw waste from being wrapped around the mounting portion of a cylindrical body.

The present invention which achieves the above object has a raking foil on the upper surface of the sprocket which is located above the cutting blade and is wound around the starting end of the grain culm conveying chain, and a vertical cylindrical body located on the upper surface of the raking foil. A driving pulley for driving the scraping belt is provided on the upper part of the cylindrical body concentrically with the sprocket, and the head of the bolt protruding from the upper surface of the scraping foil is attached to the cylindrical body. It is characterized by being covered by a fitted cylindrical cover.

The present invention will be explained below with reference to embodiments shown in the drawings.

In the combine shown in FIG. 1, 1 is a pre-processing section, 2 is a threshing section, 3 is a traveling section, and 10 is an operation section.

The pre-processing section 1 has a divider 4 at the front, a lifting device 5 following the divider 4, and a clipper-type cutting blade 6 horizontally disposed at the upper rear thereof.
In addition, grain culm raking devices 7 according to the present invention are provided at left and right positions behind the pulling device 5 and above the cutting blade 6. A starting end of a grain culm conveying chain 8 faces this grain culm raking device 7, and the rear end of the grain culm conveying chain 8 extends to the grain culm introduction part of the threshing section 2.

As shown in FIG. 3, the driving operation unit 10 has a main panel 12 provided in front of the seat 11 and a sub panel 13 provided on the side. Further, 14 is a U-shaped handle, and one end of this handle 14 is
It is rotatably supported by a bracket 15 fixed to the side surface of the sub panel 13, and is prevented from rotating by a bolt 16, and the other end is attached to the main panel 1.
It is detachably fixed to the lateral outer surface of 2 with a bolt 16. Therefore, by loosening the bolt 16 and removing the bolt 17, the handle 14 can be moved to the side position shown by the chain line and fixed at that position. Therefore, the driver can arbitrarily set the handle 14 to either the solid line position or the chain line position, whichever is easier to work with.

The details of the grain culm raking device 7 are shown in FIG. 2. A driving sprocket 20 is engaged with the starting end of the grain culm conveying chain 8.
This sprocket 20 is fixed to a drive shaft 22 protruding from a gear case 21. Reference numeral 23 denotes a scraping foil having a large number of protrusions for scraping on the outer periphery, and above the scraping foil 23 at a certain distance is a scraping belt 24 that also has a large number of protrusions for scraping. is installed. Scraping belt 24
is wound between the drive pulley 25a and the idler pulley 26 and is driven.

25 is a cylindrical body, and the drive pulley 25 is mounted on the upper end side.
a and a shaft 25c projecting upward from its axis are integrally formed, and a flange 25b is integrally formed on the lower end side. This cylindrical body 25 has its flange 25b against the upper surface of the sprocket 20.
It is fixed with a bolt 27 with a scraping foil 23 interposed therebetween. A cylindrical cover 28 is loosely fitted into the main body of the cylindrical body 25, and this cover 28 covers the head of the bolt 27 protruding from the upper surface of the scraping wheel 23. Further, a bush 29 made of resin such as nylon is loosely fitted onto the shaft 25c of the cylindrical body 25, and a cover 30 that covers the upper surface side of the rake belt 24 is fixed to the bush 29.

The grain culm raking device 7 having the above-described configuration includes a lifting device 5
The grain culm raised by the above is scraped up in front of the cutting blade 6 by the protrusion of the raking belt 24, and the base of the grain culm is cut by the cutting blade 6. The cut grain culms are collected by the scraping foil 23 and transferred to the starting end of the grain culm conveying chain 8, and further conveyed to the rear threshing machine 2 by the grain culm conveying chain 8.

In the grain culm raking device 7 described above, the drive pulley 25a of the raking belt 24 is formed integrally with the cylindrical body 25, and the drive shaft 22 is extended upward like the conventional device, and the drive shaft 22 is Since the structure is not directly fixed, the number of parts is reduced and the structure is simplified. Further, the main body of a cylindrical body 25 without a protrusion is interposed between the scraping wheel 20 and the scraping belt 24, and the head of the bolt 27 protruding from the upper surface of the scraping wheel 20 is covered with a cylindrical cover 28. Because it is covered, the structure as a whole is free of objects. Therefore, straw or the like will not get caught or become entangled, and no malfunctions will occur due to this. Further, the drive pulley 25a is not directly supported by the drive shaft 22, but is provided by a cylindrical body with a large diameter.
Since it is supported by the main body part 5, it can be supported in a highly rigid and stable state.

In short, the present invention has a raking foil on the upper surface of the sprocket which is located above the cutting blade and is wound around the starting end side of the grain culm conveying chain, and a vertical cylindrical lower part located on the upper surface of the raking foil. are fixed with bolts, and a driving pulley for driving a scraping belt is provided on the upper part of the cylindrical body concentrically with the sprocket,
Since the head of the bolt protruding from the upper surface of the scraping foil is covered by a cylindrical cover loosely fitted to the cylindrical body, a drive pulley that drives the scraping belt;
The scraping wheel on the top of the sprocket can be fixed integrally using a vertical cylindrical body, eliminating the need for a long drive shaft to fix the drive pulley and scraping wheel, resulting in a structure with fewer parts overall. It is possible to provide a simple grain culm raking device.

Moreover, even if the structure is such that the lower part of the cylindrical body located on the upper surface of the scraping wheel and the scraping foil on the upper surface of the sprocket are fixed with bolts, the head of the bolt that protrudes from the upper surface of the scraping foil is cylindrical. Since the body is covered with a cylindrical cover that is loosely fitted, it prevents straw debris from wrapping around the protruding head of the bolt, and prevents straw debris from wrapping around the mounting part of the cylindrical body. Furthermore, since the cylindrical cover is loosely fitted to the cylindrical body, it has the effect that the driving pulley and the scraping wheel can be easily attached and detached.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the front part of a combine equipped with the grain culm raking device of the present invention, Fig. 2 is a longitudinal cross-sectional view of the same grain culm raking device, and Fig. 3 is a perspective view of the operating section of the combine harvester. It is a diagram. 5... Pulling device, 7... Grain culm raking device, 8...
Grain culm conveyance chain, 20... Sprocket, 22...
... Drive shaft, 23 ... Sprocket, 24 ... Scraping belt, 25 ... Cylindrical body, 25a ... Drive pulley, 25b ... Flange.

Claims (1)

[Scope of utility model registration request] A raking foil and a lower part of a vertical cylindrical body located on the upper surface of the raking foil are fixed with bolts to the upper surface of a sprocket which is located above the cutting blade and is wound around the starting end side of the grain culm conveying chain. A driving pulley for driving the scraping belt was provided on the top of the cylindrical body concentrically with the sprocket, and the head of the bolt protruding from the top surface of the scraping foil was covered with a cylindrical cover loosely fitted to the cylindrical body. A grain culm raking device for a reaping harvester characterized by: