JPH0340114Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a tine attachment device for a rake reel of a combine harvester.

(Prior art) Generally, in a combine harvester equipped with a screw-type threshing machine, the grain culm is raked by a raking reel and cut by a cutting blade, and is transported from the raking auger to a handling room by a chain conveyor in a feeder house. The grain is threshed using a rotor, or a rotor.

When attaching the tines to the tine bar for the combine harvester as described above, the pipe of the bar is crushed in the middle to create a flat surface, and the tines are attached to this using square root bolts.

(Problem that the invention aims to solve) The above method of installing tines requires the process of crushing the pipe, and square root bolts tend to rotate easily, making it difficult to fix the tines in a fixed location. However, the disadvantage is that grain culms tend to wrap around the tine attachment area.

(Means for Solving the Problems) Therefore, the technical problem of the present invention is to provide a rake reel that allows easy installation of tines and does not involve winding of grain culms.

The technical means of the present invention to solve this technical problem is to weld a flat bar to the tine bar that connects the arms provided in the radial direction, and with the tines interposed between the tine covers on the bar, the tines are screwed together with bolts and nuts. The front tine cover is L-shaped in cross section and comes into contact with the spring part of the tine, and the rear tine cover has a protrusion for positioning so that the tines can be fixed in a fixed location. It is something.

(Example) The embodiments shown in the drawings will be described below.

First, the entire combine harvester equipped with a conventional screw-type threshing machine will be explained.

In FIG. 7, the crop that has been raked by the raking reel 1 and cut by the cutting blade 2 is conveyed from the raking auger, that is, the platform auger 3, to the handling room 6 by the chain conveyor 5 of the feeder house 4, The grain is threshed using a rotor 7.

The threshed grains fall from the crimp net 8 onto a vibrating sorting board 9 and are sorted.

The grains threshed on this vibrating sorting board 9 are sorted, but only the long straw is carried towards the rear dust outlet.

In addition, the materials to be sorted by the vibrating sorting board 9 are sorted by the sorting wind by the chisel 10, and the grains are sent to the first gutter 11 and the second gutter.
The grains fall into the second gutter 12, the grains that fall into the first gutter 11 are carried to the paddy tank via the grain lifting cylinder, and the second grains that fall into the second gutter 12 are vibrated by the second reducing auger 13. It is designed to be returned to the sorting board 9.

Now, the installation of the tines on the scraping reel 1 used in the above-mentioned combine harvester is conventionally done in the 3rd method.
It looked like the picture.

That is, by crushing the pipe of the tine bar 15 that connects the left and right arms 14, the flat surfaces 15a, 1
5a, and the base of the tine 16 is placed on one side of this plane and fixed with a square root bolt 17.

This method of attachment requires a process of crushing the pipe, which is complicated.

Therefore, in this case, a flat bar (flat steel) 18 is welded to the tine bar 15 and the tines 16 are attached to it, and the base of the tine 16 is covered with the front and rear tine covers 19 and 20 during installation. The front cover 19 is configured to have an L-shaped cross section, and its horizontal portion 19a is connected to the tine 1.
6, and a protrusion 21 for positioning is formed on the rear cover 20 by press processing so that the tines 16 are stopped on the side of the U-nut 22 in the tightening direction shown by the arrow A in FIG. , so that the tines can always be fixed in a fixed location.

With the above configuration, the tine bars 15 do not need to be crushed, and the tine covers 19, 20 can be easily attached. Also, since the square root bolt 17 is tightened with the U nut 22, it is difficult to come off and does not rotate.

Furthermore, the front and rear tine covers 19 and 20 prevent the culm from wrapping around the culm, and since the tine cover 20 is provided with a protrusion 21 for positioning, the tine 16
is fixed in a certain place, and the tines do not hit the cutting blade, catch blade, etc.

In FIG. 4, 23 is the center shaft of the scraping reel, and the arms 14 are attached to the desks 24 on both sides.
is installed.

Further, as shown in FIG. 5, if only the rear tine cover 20 is used, the tips of the ears will get caught in the gaps between the spring portions 16a of the tines 16, giving a bad impression to the operator and causing sludge. Therefore, if the front tine cover 19 is provided, this serves as a tine wrapping prevention plate and the above-mentioned drawbacks are eliminated.

(Effects of the invention) According to the present invention, the tine cover is easy to install since there is no need to crush the tine bar, and since the square root bolt can be tightened with a U-nut, it is difficult to come off and does not rotate.

Furthermore, since tine covers are provided on both sides of the tines, the grain culms are less likely to get wrapped around them, and the alignment protrusions allow the tines to be fixed in a fixed place, allowing the tines to contact cutting blades, receiving blades, etc. Nothing happens.

[Brief explanation of the drawing]

Figures 1A and 2B are cutaway drawings and enlarged views of the proposed device, Figure 2 is a front view of the proposed device, Figure 3 is a partial view of a conventional tine mounting device, and Figure 4 is a cutaway of the scraping reel. A plan view, FIGS. 5 and 6 are partial views showing a tine mounting device provided with a tine cover, and FIG. 7 is an overall view of the combine harvester. 15... Tine bar, 16... Tine, 17...
... Square root bolt, 18 ... Flat bar, 19, 20
...Front and rear tine covers, 21...Protrusion for positioning, 22...U nut.

Claims (1)

[Scope of utility model registration request] A flat bar is welded to the tine bar that connects the arms provided in the radial direction, and the tines are connected to the bar with bolts and nuts with the tines interposed between the tine covers, and the front tine cover has an L-shaped cross section. A tine in a scraping reel for a combine harvester, characterized in that the tine is configured to abut against a spring portion of the tine, and a rear tine cover is provided with a protrusion for positioning so that the tine can be fixed in a fixed location. Mounting device.