JPH0214357Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is used in a threshing machine, and particularly relates to a structure for attaching and detaching a straw cutting sickle used in a threshing machine handling room.

(Prior art) Regarding the attachment and detachment structure of the straw-cutting sickle,
- As disclosed in No. 117749, each straw-cutting sickle is bolted to a sickle mounting base that is detachably attached to the fuselage, and as in Utility Model No. 58-53530, there is a Insert a U-shaped straw-cutting sickle from outside the handling chamber into the hole of the sickle mounting base fixed to the handle, so that the cutting edge protrudes into the handling chamber, and press the base of the sickle from outside the handling chamber through the plate. Those who have done so are known.

(Problem that the invention aims to solve) Generally, when the edge of a straw-cutting sickle loses its sharpness or breaks, it needs to be resharpened or replaced with a new one, and in that case, it is easy to attach and detach. What is desired is something that can be done easily and quickly.

However, in the former case (Utility Model Application No. 54-117749), the sickle mounting base can be removed from the fuselage with the straw-cutting sickle attached, so it is relatively easy to remove it from the fuselage, but the straw-cutting sickle can be removed from the sickle mounting base. It has the disadvantage that it takes a long time to operate because it has to be removed one by one.

In addition, in the latter case (Utility Model No. 58-53530), even after removing the plate that crimps the straw-cutting sickles, each straw-cutting sickle remains inserted into the hole in the sickle mounting base, and is inserted into the inside of the machine. The straw-cutting sickle must be pulled out one by one in the pinching area, which is cramped and cumbersome to operate, and if the straw-cutting sickle is dropped by mistake, it will fall into the fuselage, making it extremely difficult to remove it. Moreover, since the straw-cutting sickle must be attached and detached from the outside of the receiving net,
For example, even if the cylinder cover above the handling chamber is opened, it cannot be removed from within the handling chamber, so it is necessary to provide a separate opening in the frame on the side of the threshing machine.

The technical problem of the present invention is to make it easy and quick to attach and detach the straw-cutting sickle.

(Technical measures taken to solve the problem) The straw cutting sickle attachment device for a threshing machine according to the present invention, which was taken to solve the above problems, is as follows.

The cylinder cover of the thresher can be opened and closed at one end of the side plate, and the sickle support frame is attached to the handling chamber.
A sickle mounting base with multiple vertical long holes is provided,
Insert a U-shaped straw-cutting sickle into the long hole from the back side of the mounting base, and when installing the sickle mounting base on the upper part of the sickle support frame, insert the sickle into the lower part with the tip of the sickle protruding into the handling chamber. At the same time, with the upper side of the cylinder cover open, tighten it with a tightening tool from inside the handling chamber, and then attach the base side of the straw-cutting sickle to the sickle support frame and the sickle mounting base. It is characterized by a straw-cutting sickle fixed in place by holding it in place.

(Function) When removing the straw cutting sickle 29 from the machine, open the cylinder cover 17 and tighten the bolt with handle 3, which is a tightening tool.
At the same time, remove the sickle mount 28 from the inside of the handling chamber 2 from the sickle support frame 13, and insert the plurality of straw-cutting sickles 29 into the long holes 28c of the sickle mount 28 to temporarily hold them. Take it out all at once from above. Thereafter, the straw-cutting sickle 29 can be removed from the long hole 28c in a wide area outside the machine and replaced or polished.

Moreover, when attaching the straw-cutting sickle 29 to the aircraft body, the operation is performed in the opposite manner to the above.

(Example) An example of the present invention will be described with reference to the drawings.
Reference numeral 1 denotes a handling barrel which is installed inside the thresher and has a plurality of handling teeth 3 implanted on its outer periphery, and is pivoted on a handling barrel shaft 6 which is pivotally supported between a front wall 4 and a rear wall 5, as shown in FIG. It is designed to rotate in the direction of arrow A.

Reference numeral 7 denotes a handling port opened to the side of the handling chamber 2, and a grain culm transfer device 8 is installed along the handling port 7 outside of the handling port.

Reference numeral 9 denotes a lower fixing frame that connects the front wall 4 and rear wall 5 at the lower part of the handling trunk shaft 6, and 10 denotes an upper fixing frame that connects the front wall 4 and the rear wall 5 at the upper part on the side opposite to the handling port. A receiving net frame 12 with a receiving net 12a stretched thereon is removably attached between the handling opening plate 11 provided below the handling opening 7 and the lower fixed frame 9, and between the lower fixed frame 9 and the upper fixed frame 10. A sickle support frame 13, which supports a straw-cutting sickle 29 on the upper part and has a receiving net 13a on the lower part, is detachably attached. And the above-mentioned handling opening plate 11,
Both the receiving net frame 12 and the sickle support frame 13 are curved along the outer periphery of the handling teeth 3, and form the inner wall of the handling chamber.

15 is a side plate that extends from above the fixed frame 10 to the outside of the grain passage 14 and covers this, and 16 is an upper plate on the handling opening side.

Reference numeral 17 denotes a cylinder cover, which has one end of the side plate 15 as a hinge part 18 and is fixed to the lower surface of the top plate 19 which can be opened and closed in the vertical direction, and its inner wall is curved along the outer periphery of the handling teeth 3. There is. Numeral 20 is a fixing bolt that fixes the cylinder cover 17 to the front wall 4 and the rear wall 5.

Reference numeral 21 denotes a dustproof plate fixed to the front wall 4 and rear wall 5 to close the gaps 22 and 22 formed between both ends of the cylinder cover 17 and the front wall 4 and rear wall 5, respectively. It is formed in a half-moon shape, and its thickness prevents the culm from entering the gap 22 and prevents debris from blowing out of the machine through this gap. Also, instead of fixing the dustproof plate 21, the front wall 4 and the rear wall 5 are fixed as shown in FIG.
A dustproof rib 23 may be provided along the inner wall of the cylinder cover 17 to protrude inward.

The lower end of the sickle support frame 13 is fixed by inserting a pin 25 provided at an outwardly bent portion of the lower edge into a pin hole of the lower fixing frame 9, and the upper part is bent outwardly 13.
b, further bend the end upwards to form a rising part 13
c, and the rising portion 13c is connected to the bolt 2.
6 is fixed to a fixed frame 10.

Reference numeral 27 denotes a support provided at the upper part of the inner surface of the sickle support frame 13. The upper part has an opening of an engagement recess 27a that supports the lower side of the sickle mount 28, and the bottom and both sides are fixed to the sickle support frame 13. .

The sickle mounting base 28 has an upper side 28a bent outward and has a cross-sectional shape, and a lower side 28a facing the handling barrel 1.
A straw-cutting sickle 29 whose base is bent into a U-shape and has a cutting blade at the tip is inserted into a plurality of vertically elongated holes 28c provided in 8b with the cutting edge protruding toward the handling barrel 1 side. , the lower edge of the sickle mounting base 28 is inserted into and engaged with the engaging recess 27a of the support body 27, so that the lower edge of the straw-cutting sickle 29 comes into contact with the support body 27, and the bent upper side 28a is Outward bent portion 13b of sickle support frame 13
They are stacked on top of each other and secured thereto by tightening with handle bolts 30. The base of the straw-cutting sickle 29 is the sickle mounting base 2.
It will be held between the back of the lower side 28b of 8 and the sickle support 27, and from the vertical direction, the elongated hole 28c
It is firmly held by the upper edge and the upper edge of the sickle support 27.

In this embodiment, the sickle mount 28 is made of a material with some elasticity, and the gap between the engagement recesses 27a is a U-shaped straw-cutting sickle 29 in the thickness of the sickle mount 28. It is configured to be slightly smaller than the dimension including the thickness of the base part of
The straw-cutting sickle 29 is clamped even more firmly by being held against the rising portion 13c of the sickle support frame 13 and tightened with the handle bolt 30.

The present invention is constructed as described above, and consists of two straw-cutting sickles.
9 from the machine, loosen the fixing bolts 20 for fixing the cylinder cover 17 and rotate the cylinder cover 17 upward about the hinge part 18 as shown by the chain line in FIG. is widely opened to form a wide operation space near the handle bolt 30. Then, loosen the handle bolt 30 and pull up the sickle mount 28, and the straw-cutting sickle 29 will be taken out while being temporarily held in the long hole 28c of the sickle mount 28. It can be pulled out through the elongated hole 28c.

The part where the above bolt with handle 30 is attached is the handling room 2
It is an inner part that protrudes outward, and during threshing, the inside is covered by a cylinder cover 17 to prevent straw debris from getting inside, and the loosening operation of the handle bolt 30 is is easily done.

When installing the straw-cutting sickle 29, insert the straw-cutting sickle 29 into the long hole 28c of the sickle mounting base 28 from the back side and temporarily hold it, and engage the lower edge of the sickle mounting base 28 with the engagement recess 27a of the support body 27. Then, tighten the upper side 28a with the handle bolt 30. Then, the straw-cutting sickle 29 is
The upper end of the elongated hole 28c and the upper edge of the support body 27 are sandwiched from above and below, and the sickle support frame 13 and the sickle mounting base 2
8 and is firmly fixed.

And, such a firmly fixed straw-cutting sickle 29
The straw is generated in the handling chamber 2 without being loosened or moved during threshing work, and the straw carried around by the handling teeth 3 is cut into pieces by the straw cutting sickle 29.

At this time, since the straw-cutting sickle mounting part is covered with the support body 27 on the upper side and both sides in the direction of one rotation of the handling cylinder, this part is not clogged with straw waste, etc., and the mounting strength is increased. There is.

In addition, when removing the entire sickle support frame 13, it is sufficient to loosen the bolts 26 fixing the rising portion 13c and pull the sickle support frame 13 upward.
The pin 25 provided at the lower edge of the frame 9 is removed from the hole in the lower fixing frame 9 as it is pulled up, so that it can be easily pulled up. To remove the straw-cutting sickle 29 from the taken-out sickle support frame 13, use the handle bolt 3 as described above.
All you have to do is loosen the screws at 0.

(Effect of the invention) The cylinder cover 17 of the threshing machine is configured to be openable and closable at one end of the side plate 15, and the sickle support frame 13 is attached to the handling chamber 2, while the sickle mounting base 28 having a plurality of vertically elongated holes 28c is installed. A U-shaped straw cutting sickle 29 is inserted into the elongated hole 28c from the back side of the mounting base 28, and the sickle mounting base 2 is inserted into the upper part of the sickle support frame 13.
8, the lower side of the sickle 29 is locked to the sickle support frame 13 with the tip of the sickle 29 protruding into the handling chamber 2, and the upper side is placed inside the handling chamber 2 with the cylinder cover 17 open. Since the straw-cutting sickle 29 was secured by tightening the straw-cutting sickle 29 with a tightening tool from both ends and the base side of the straw-cutting sickle 29 was clamped between the sickle support frame 13 and the sickle mounting base 28, it was possible to fix the straw-cutting sickle 29 using a tightening tool. There is no need to attach and detach each straw cutting sickle with bolts as in the issue,
While the individual straw-cutting sickles 29 can be easily attached and detached, the sickle mounting base 28 is tightened from inside the handling chamber and can be attached and detached.
Unlike No. 53530, there is no need to take out the straw-cutting sickle one by one from the gripping place on the machine, and the sickle mounting base 28
Multiple straw-cutting sickles 29 can be taken out of the machine at once while temporarily held in the long holes 28c, and each straw-cutting sickle 29 can be removed from the machine in a wide area outside the machine.
The straw-cutting sickle 29 can be pulled out from the sickle mounting base 28, and the work can be carried out efficiently, and it is also possible to prevent the straw-cutting sickle 29 from accidentally dropping into the threshing machine as much as possible. Furthermore, if you open the cylinder cover 17, you can attach and detach the straw cutting sickle 29 from here.
There is no need to provide a separate opening in the machine body for attaching and detaching the straw cutting sickle, simplifying the structure.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front sectional view of the main parts of the threshing machine, Fig. 2 is an exploded perspective view of the same, and Fig. 3 is an enlarged perspective view of the main parts of the same.
Figure 4 is a cross-sectional view of the joint between the sickle support frame and the lower fixing frame, Figure 5 is a side cross-sectional view of the upper part of the handling chamber, and Figure 6 is an explanatory diagram of an example in which dustproof ribs are formed on the front and rear walls. be. 1... handling barrel, 2... handling chamber, 13... sickle support,
28...sickle mounting base, 28c...long hole, 29...straw cutting sickle, 30...bolt with handle.

Claims (1)

[Scope of utility model registration request] The cylinder cover 17 of the threshing machine is configured to be openable and closable at one end of the side plate 15, and the sickle support frame 13 is attached to the handling chamber 2, while a sickle mounting base 28 having a plurality of vertical elongated holes 28c is provided. A U-shaped straw-cutting sickle 29 is inserted into the elongated hole 28c from the back side of the sickle 28, and the sickle mounting base 2 is inserted into the upper part of the sickle support frame 13.
8, the lower side of the sickle 29 is locked to the sickle support frame 13 with the tip of the sickle 29 protruding into the handling chamber 2, and the upper side is placed inside the handling chamber 2 with the cylinder cover 17 open. A straw-cutting machine for a threshing machine characterized in that the straw-cutting sickle 29 is fixed by tightening the straw-cutting sickle 29 with a tightening tool from one side to the other, and clamping the base side of the straw-cutting sickle 29 between the sickle support frame 13 and the sickle mounting base 28. Sickle attachment device.