JPH0516921Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a winding prevention structure for a disc-shaped waste straw vine that can prevent cut straw from wrapping around the receiving blade side of the disc-shaped waste straw vine. Specifically, a disk-shaped supply blade and a scraping blade are arranged close to each other with a gap between them on the supply shaft, and a large number of them are arranged in parallel at a predetermined interval in the axial direction to form a receiving blade. A cutting blade is constructed by arranging a large number of disk-shaped rotary blades in parallel at predetermined intervals in the axial direction, and the rotary blade tip of the cutting blade is inserted between the supply blade and the scraping blade. The present invention relates to a winding prevention structure for a disk-shaped waste straw snail, in which a receiving blade and a cutting blade are disposed opposite to each other, and a winding prevention mechanism for waste straw is provided on the supply blade.

[Conventional technology]

In order to improve the cutting performance and durability of such waste straw vines, for example,
There is one disclosed in Publication No. 128539. That is, in this configuration, the tip of the rotary blade of the cutting blade enters into the place where the waste straw is supported by the supply blade and the scraping blade of the receiving blade, which are placed close to each other.
It has less slippage of the waste straw, good cutting properties, and excellent durability.

However, since the supply blade and the raking blade of the receiving blade are arranged close to each other, if a relatively long waste straw gets between them and wraps around the supply shaft, it is difficult to remove and the waste straw becomes clogged. The disadvantage is that the cutting elasticity decreases. Therefore, for example,
As disclosed in the above publication, in order to prevent the waste straw from wrapping around the supply shaft, a mechanism has been proposed in which a brush member that comes into contact with the supply shaft is attached as a mechanism for preventing the waste straw from wrapping around the supply shaft. .

[Problem that the invention attempts to solve]

However, in the above structure, the waste straw may get stuck between the supply shaft and the tip of the brush member, and as a result of the waste straw constantly acting on the tip of the brush member, the brush member may be bent, deformed, or broken. It was hot. In response to this, the present applicant has also proposed providing a scraper member that includes a fitting part that fits externally to the supply shaft so as to be relatively rotatable, and a support part that is pivotally supported at a position outward from the supply shaft. When assembling the scraper member to the supply shaft, it is necessary to fit the scraper member onto the supply shaft one by one together with the supply blade and scraping blade, which is troublesome to assemble, and one scraper member may be damaged. Even in this case, it is necessary to remove most of the supply blades and the scraper member from the shaft, making it troublesome to replace them.

The present invention has been developed by focusing on the above-mentioned circumstances, and by attaching the scraper member to the supply shaft, it is possible to eliminate waste between the brush member and the brush member by attaching the scraper member to the supply shaft. To provide a scraper member that can prevent waste straw from wrapping around a supply shaft while preventing straw from clogging and members from deforming, and whose scraper member can be easily assembled and replaced. .

[Means for solving problems]

That is, the characteristic configuration of the winding prevention structure of the disk-shaped discharged straw vine according to the present invention is that the winding prevention mechanism is extrapolated to the supply shaft between the supply blade and the scraping blade so as to be relatively rotatable. The scraper member includes a fitting part and a supporting part integrally extended from the fitting part to a position outside the receiving blade and rotatably supported, and the fitting part of the scraper member is The structure is such that it can be divided and separated along a dividing line passing through the center line of the supply shaft, and its functions and effects are as follows.

[Effect]

When the waste straw tries to wrap around the supply shaft between the supply blade and the scraping blade, because a scraper member having an outer circumference longer than the outer circumference of the supply shaft is inserted into this gap, It becomes difficult for the waste straw to wrap around the entire circumference of the scraper member, and therefore even relatively long waste straw will fall in an extended state.

In addition, the scraper member is configured so that its fitting portion can be divided and separated at a dividing line passing through the center line of the supply shaft, so when assembling or removing the scraper member on the supply shaft, Since it can be done in a divided state from the outside, there is no need to pass it through the supply shaft, and therefore it can be attached to and removed from the supply shaft independently of the supply blade and other scraper members.

[Effect of idea]

Even though the supply blade and the raking blade are arranged close to each other as in the above structure to improve cutting elasticity and durability, waste straw is prevented from wrapping between the supply blade and the raking blade. Now I can do it. In addition, maintenance is easy, as the waste straw does not become clogged in this area or the member deforms, unlike when a conventional brush member is attached.
Furthermore, even when assembling a scraper member to this supply shaft or replacing a damaged scraper member, there is no need to remove almost all the members from the supply shaft at one end as in the past, making it easy to assemble and replace the scraper member. It has become possible to do this in a number of ways, which has become advantageous in terms of productivity and cost.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

Figure 1 shows a threshing device 19 mounted on a combine harvester.
A straw cutting 10 is shown equipped at the rear of the straw cutting 10, and this straw cutting 10 is configured to switch the fixed posture of a straw removal route switching plate 12 which is pivotally connected to the supply port 11 above the straw cutting 10 so as to be openable and closable. Accordingly, the waste straw transported by the waste straw conveying device 18 after the threshing process is fed into the waste straw vine 10, and the waste straw is fed into the waste straw binding device (not shown) disposed behind the waste straw vine 10. It is now possible to switch between postures.
In addition, 27 in the figure is a guide plate when sending the waste straw to the waste straw cutter 10.

To explain the straw removal vine 10 in detail, as shown in FIG. 1 and FIG. Power is transmitted to the shaft 8 from the threshing device 19 via a transmission mechanism, and the power is also transmitted to the supply shaft 6 of the receiving blade 2 via a reduction gear (not shown). There is.

The receiving blade 2 is composed of a large number of disc-shaped supply blades 1 and scraping blades 7 arranged in parallel at a predetermined interval in the axial direction on the supply shaft 6, with the disc-shaped supply blade 1 and the scraping blade 7 being arranged close to each other via a spacer 17. ing. A saw blade-like cutting edge portion 1a is formed on the outer periphery of the supply blade 1, and a protrusion for scraping (not shown) is formed on the outer periphery of the scraping blade 7. On the other hand, the cutting blade 4 is composed of a large number of disc-shaped rotary blades 3 arranged in parallel in the axial direction at equal intervals via spacers 20 on the cutting shaft 8, and the tip of the rotary blade 3 is shown in FIG. As shown, it is inserted between the supply blade 1 and the scraping blade 7 on the left and right sides of the receiving blade 2, and the tip of the rotary blade 3 and the tips of the receiving blade 2 and the scraping blade 7 overlap in side view. It is composed of Further, a saw blade-shaped cutting edge portion 3a is formed on the outer peripheral portion of the rotary blade 3 over the entire circumference.

At a position in front of the receiving blade 2, a mounting frame 13 is horizontally suspended parallel to the receiving blade 2, and a supporting portion 23 of a plate-shaped scraper member 5 integrally formed from polyethylene is attached to the mounting frame 13 with a gap therebetween. It is pivoted so that it can move up and down freely through the. The tip of this scraper member 5 is fitted between the supply blade 1 and the scraping blade 7 which are adjacent to each other so as to be relatively rotatable around the spacer 17. The fitting portion 22 includes a large diameter circular portion 22a concentric with the spacer 17, and the supporting portion 23 includes a large diameter circular portion 23a concentric with the mounting frame 13. Straight portions 14, 14 connecting 22a, 23a are formed on the upper and lower edges of the scraper member 5, respectively.

Therefore, the waste straw supplied between the receiving blade 2 and the cutting blade 4 is effectively removed by the rotary blade 3 entering and driving the place where it is supported by the scraping blade 7 and the supply blade 1. Even if each blade is worn out, the feeding attitude of the waste straw to each blade is approximately parallel to each other, so the cutting ability will not deteriorate. In particular, in a combine harvester in which the conveying device 18 disposed at the rear of the combine moves the waste straw in the direction of the grain while conveying it to the grain, the waste straw is likely to be fed in an inclined manner with respect to the waste straw cutter 10. However, even in that case, it can be cut without any problem. Here, when the waste straw tries to wrap around the spacer 17 between the left and right supply blades 1 and the scraping blades 7, each scraper member 5
Since the circumferential length of the scraper member 5 is longer than that of the spacer 5, even a relatively long waste straw can fall without wrapping around the scraper member 5. As the receiving blade 2 rotates, the waste straw that tries to wrap around the straight portion 14 hits the straight portion 14 with force, and is dropped downward.

As shown in FIGS. 1 and 3, the scraper member 5 is configured to be separable into upper and lower parts at a dividing line _L1 connecting the mounting frame 13 and the center line of the supply shaft 6, and each upper and lower scraper member They are constructed so that they can be joined by bolts 24 passed through through holes 9 formed in 5a and 5b. As shown in FIG. 3, a protrusion 25 is formed on one side of the joint surface between the upper scraper 5a and the stock scraper 5b, and the protrusion 25 is formed on the other side.
A groove 26 is formed to fit into the groove 5, so that the groove 26 does not shift laterally relative to each other. Further, the bolt attachment portion is provided at a position outside the rotation locus of the supply blade 1, and can be separated or joined without hitting the supply blade 1.

[Another example]

One end side of the upper and lower scrapers 5a, 5b may be pivotally connected, and the other side may be separably fixed with a bolt.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the winding prevention structure for the disc-shaped waste straw vine according to the present invention, and FIG.
The figure is a cross-sectional plan view of the waste straw cutlet, and FIG. 3 is a cross-sectional view of the main part of the scraper member. 1... Supply blade, 2... Receiving blade, 3... Rotating blade, 4
... Cutting blade, 5 ... Winding prevention mechanism, 6 ... Supply shaft, 7 ... Scraping blade, 8 ... Cutting shaft, 22 ... Fitting part, 23 ... Supporting part, L ₁ ... Division line.

Claims (1)

[Scope of utility model registration request] A receiving blade 2 is constructed by arranging a large number of disc-shaped supply blades 1 and raking blades 7 in close proximity to each other with a space between them on the supply shaft 6 at a predetermined interval in the axial direction. A cutting blade 4 is constructed by arranging a large number of disk-shaped rotary blades 3 in parallel at predetermined intervals in the axial direction on the cutting shaft 8, and the tip of the rotary blade 3 of the cutting blade 4 is connected to the supply blade 1.
The receiving blade 2 is inserted between the raking blade 7 and the raking blade 7.
and a cutting blade 4 are disposed to face each other, and the supply blade 1 is provided with a winding prevention mechanism 5 for the winding of waste straw. A fitting part 22 is fitted onto the supply shaft 6 so as to be relatively rotatable between the supply blade 1 and the scraping blade 7, and a fitting part 22 is integrally extended from the fitting part 22 to a position outside the receiving blade 2. The scraper member includes a support portion 23 that is rotatably supported by the scraper member.
The fitting part 22 of the scraper member 5 is connected to the supply shaft 6.
A winding prevention structure for disc-shaped waste straw vines that can be divided and separated at the dividing line L ₁ passing through the center line.