CN213662500U - Harvesting knife, cutting device, harvesting part and harvester - Google Patents

Abstract

The application relates to a harvesting knife, a cutting device, a harvesting part and a harvester. The harvesting knife can not cause the complication of the structure and the weight increase, and can lighten the vibration. The harvesting knife is used for a harvesting part of a harvester, and comprises: a harvesting knife body part (20) which is narrower at the front part than at the rear part and is approximately triangular in plan view; and a base part (21) for mounting, which is connected to the rear part of the harvesting blade body part (20), wherein the harvesting blade is formed with an opening part (25) in a manner of crossing the harvesting blade body part (20) and the base part (21), the opening part (25) is provided with a triangular part (27), and the triangular part (27) is provided with an inclined part (26) along the blade parts (22) on the left and right sides of the harvesting blade body part (20).

Description

Harvesting knife, cutting device, harvesting part and harvester

Technical Field

The utility model relates to a harvesting knife of a harvester such as a combine harvester.

Background

The harvester is provided with a harvesting part for harvesting crops. The harvesting section has a cutting device for cutting the crop. In the cutting device, a plurality of harvesting blades are arranged in the left-right direction. The plurality of harvesting knives are reciprocated in the left-right direction to cut the crops.

In the cutting device, a plurality of harvesting knives are arranged in the left-right direction. The harvesting knife of the conventional structure has a blade portion in the left-right direction and is formed of a plate-like member integrally connected. Further, the thickness is set to a predetermined value in order to improve the durability of the harvesting knife. As a result, the entire weight of the plurality of harvesting blades in the reciprocating operation is large, and the machine body vibration generated in association with the reciprocating operation is also large.

In order to suppress the above-described vibrations, a proposal has been made to use a counterweight that moves in a direction opposite to the movement direction of the harvesting knife. However, when the above-described counterweight body is used, the weight of the cutting device and the harvester is large, the number of parts is large, and the structure is more complicated, which is disadvantageous.

SUMMERY OF THE UTILITY MODEL

(problem to be solved by the utility model)

Here, it is desired to realize a harvesting knife capable of reducing vibrations without causing a reduction in the performance of the harvesting knife. Further, it is desirable to realize a cutting device, a harvesting section and a harvester using the harvesting knife.

(means for solving the problems)

The utility model discloses a harvesting knife is used for the portion of reaping of harvester, its characterized in that has: a harvesting knife body part, the front part of which is narrower than the rear part and is approximately triangular in plan view; and a base portion for attachment connected to a rear portion of the harvesting blade body portion, wherein the harvesting blade has an opening portion formed so as to straddle the harvesting blade body portion and the base portion, the opening portion having a triangular portion having inclined portions along blade portions on both left and right sides of the harvesting blade body portion.

According to the present invention, an opening portion is formed, the opening portion having a triangular portion having an inclined portion that spans the harvesting blade body portion and the base portion and along the blade portions of the left and right sides. The opening can be formed as large as possible while ensuring the necessary strength of the portion where the blade edge portion is formed, and the weight of the harvesting knife can be reduced. As a result, even in a configuration in which the plurality of harvesting blades are arranged in the horizontal direction and move back and forth, the machine body vibration can be suppressed.

Therefore, even when the harvester is used for a harvesting part of a harvester, the harvesting knife can be provided without causing the performance reduction of the harvesting knife and can reduce the vibration.

In the present invention, preferably, the triangular portion spans the harvesting blade body portion and the base portion.

According to this configuration, since the opening portion has the triangular portion that straddles the harvesting blade main body portion and the base portion, the weight of the harvesting blade can be further reduced.

In the present invention, it is preferable that the base portion has an installation portion installed in the harvesting portion, and the opening portion extends to a position corresponding to the installation portion.

According to this configuration, the opening can be extended long by effectively utilizing the region corresponding to the mounting portion.

In the present invention, it is preferable that the opening is provided in a state not overlapping with the mounting portion in the left-right direction.

According to this configuration, the attachment to the harvesting portion is performed at a position away from the opening portion, and thus the harvesting portion can be firmly fixed.

In the present invention, it is preferable that the mounting portion is provided on both left and right sides of the base portion, and the mounting portion is provided at a distance in the left-right direction so as not to overlap with the opening portion.

According to this configuration, the base portion can be stably attached to the harvesting portion via the left and right attachment portions, and the opening portion can be extended long by effectively utilizing the region between the left and right attachment portions.

In the present invention, preferably, the entire opening is triangular.

According to this structure, the region on the base side can be opened as widely as possible.

In the present invention, it is preferable that the opening is formed in a portion not overlapping with a region where heat treatment is performed.

According to this structure, the region in which the hardness is increased by the heat treatment is not opened, and therefore, the opening can be formed without lowering the hardness of the portion requiring the cutting treatment.

In the present invention, it is preferable that the opening is formed in a state in which a height of a triangular portion when the inclined portion of the opening is a bottom is larger than a distance between the edge portion of the blade portion and the inclined portion of the opening corresponding to the blade portion.

According to this configuration, not only can the strength of the blade be ensured by providing a predetermined distance between the blade portion and the inclined portion of the opening, but also the triangular portion can be increased in height to open the blade in a wide range as possible.

The utility model discloses a cutting device's characterized in that has above-mentioned receipts cutting knife.

Provided is a cutting device capable of suppressing vibration generated by reciprocating movement even when a plurality of harvesting knives are arranged in a horizontal arrangement and the harvesting knives reciprocate.

The harvesting part of the utility model is characterized in that the cutting device is provided.

It is possible to provide a harvesting unit that has less vibration by having a cutting device that can suppress vibration generated along with reciprocating movement.

The utility model discloses a harvester is characterized in that, has foretell harvesting part.

According to this configuration, it is possible to provide a harvester in which the vibration of the machine body is reduced by providing the harvesting unit capable of suppressing the vibration.

Drawings

Fig. 1 is a side view of a combine harvester.

Fig. 2 is a plan view of the cutting device.

Fig. 3 is a longitudinal sectional side view of the cutting device.

Fig. 4 is a plan view of the harvesting knife.

Description of the reference numerals

7: harvesting part

17: harvesting knife

20: harvesting knife body part

21: base part

22: knife edge

24: rivet mounting hole (mounting part)

25: opening part

26: inclined part

27: triangular part

L1: distance between two adjacent plates

L2: height

Q: and (4) a region.

Detailed Description

Next, a case where the embodiment of the present invention is applied to a general type combine harvester as an example of a combine harvester will be described with reference to the drawings. In the following description, the direction of arrow "F" is "front side of the body," the direction of arrow "B" is "rear side of the body" (see fig. 1), the direction of arrow "L" is "left side of the body," and the direction of arrow "R" is "right side of the body" (see fig. 2).

Fig. 1 is a side view of a general type combine harvester as an example of the harvester. The combine is provided with a running body 2 having a pair of left and right crawler running devices 1, a full-feeding type threshing device 3 and a grain tank 4 for storing grains, which are arranged in the left-right direction. A driver 5 is provided in front of the grain tank 4. There is also a grain discharge device 6 for discharging the grains stored in the grain tank 4 to the outside.

A harvesting part 7 for harvesting standing grain stalks as an example of crops is provided at the front of the body. A feeder 8 for conveying the harvested straw to the rear side of the machine body is provided at the rear part of the harvesting part 7. The harvesting unit 7 and the feeder 8 are supported by the front portion of the threshing device 3 so as to be integrally swingable up and down about a horizontal axis P1 by the telescopic operation of the hydraulic cylinder 9.

The harvesting section 7 has: the left and right grain dividers 10 are arranged at the foremost end of the machine body; the reel 11 is positioned at the rear upper part of the grain divider 10; a cutting device 12 located behind the crop divider 10; and a lateral transfer auger 13 located between the cutting device 12 and the feeder 8. The crop divider 10 divides standing grain stalks as harvesting objects and standing grain stalks as non-harvesting objects. The reel 11 is used for pulling in the vertical grain stalk of the reaping object backwards. The cutting device 12 is a device for cutting and harvesting the root side of the standing grain straw of the crop as the harvesting object which is pulled in backward through the reel 11, and has a pusher-type harvesting knife. The transverse transfer auger 13 transversely transfers and gathers the harvested stalks cut by the cutting device 12 to the middle side in the left-right direction, and feeds the harvested stalks out to the rear.

(cutting device)

The cutting device 12 will be explained below.

As shown in fig. 3, the cutting device 12 is attached and fixed to a coupling frame 14 extending in the left-right direction (machine body width direction). As shown in fig. 2 and 3, the cutting device 12 includes: a base 15 fixed to the connecting frame 14 and having an L-shaped cross section; a receiving blade 16 attached to the base 15; a harvesting knife 17 supported to be slidable in the left-right direction with respect to the receiving knife 16; a cutter handle 18 for driving the cutter 17; and a knife holder body 19 that holds the harvesting knife 17 so as to allow sliding and prevent floating; and the like.

As shown in fig. 2, the cutting blades 17 are provided in a state where a plurality of them are arranged adjacent to each other in the left-right direction. The take-up blade 17 is attached to a long handle 18 extending in the left-right direction by a rivet. The receiving blade 16 extends long in the front-rear direction, and a slit 23 capable of moving the harvesting blade 17 in the left-right direction is formed in the middle portion in the vertical direction.

The catcher 17 is attached to the holder 18 in a state of entering the slit 23 of the receiver 16 and reciprocating in the left-right direction. When power is transmitted from an engine, not shown, the cutter handle 18 is driven to reciprocate in the left-right direction at predetermined intervals, and the cutting blade 17 attached to the cutter handle 18 reciprocates. Thus, the root of the standing grain straw can be cut and harvested by cooperation of the fixed receiving knife 16 and harvesting knife 17. The holder 18 is a member located closer to the machine body, i.e., closer to the harvesting section 7 than the harvesting blade 17, and a rivet mounting hole 24 through which a rivet is inserted, which is a portion to be fixed by the rivet, corresponds to a mounting portion for mounting the base 21 to the harvesting section 7.

As shown in fig. 4, the harvesting knife 17 includes: a cutting blade body 20 having a front portion narrower than a rear portion and a substantially triangular shape in plan view; and a base 21 for attachment, which is continuous with the rear part of the harvesting blade main body 20 and has a substantially rectangular shape in plan view. The harvesting knife 17 is formed in a plate shape in a state where the harvesting knife main body portion 20 and the base portion 21 are integrally connected. Serrated blade portions 22 for cutting the agricultural product are formed on the outer edges of the harvesting blade body portion 20 on both left and right sides.

The harvesting knife 17 has an opening 25 formed to straddle the harvesting knife body 20 and the base 21. The opening 25 is formed as a through hole penetrating the center of the harvesting knife 17 in the vertical direction. The opening 25 has a triangular portion 27, and the triangular portion 27 has inclined portions 26 along the blade portions 22 on both left and right sides of the cutting blade body portion 20. In this embodiment, the entire opening 25 is triangular, and the triangular portion 27 constitutes the entire opening 25.

The opening 25 is provided so as not to overlap the rivet attaching hole 24 in the left-right direction. As will be described later, the rivet holes 24 are provided on both the left and right sides of the base 21, and the left and right rivet holes 24 are provided at a distance in the left-right direction so as not to overlap the opening 25.

The opening 25 is formed in a portion not overlapping with the region of the harvesting knife 17 where the heat treatment is performed. In fig. 4, the region indicated by oblique lines (including the blade part 22) indicates the region Q subjected to the heat treatment. As the heat treatment, for example, there is a case hardening treatment by high frequency quenching and tempering. The opening 25 is formed in a portion not overlapping with the region where the heat treatment is performed.

As shown in fig. 4, the opening 25 is formed in a state where the height L2 of the triangular portion is larger when the inclined portion of the opening 25 is a bottom portion than the distance L1 between the edge portion 22a of the blade portion 22 and the inclined portion 26 of the opening 25 corresponding to the blade portion 22. By securing a predetermined width as the distance L1 between the edge portion 22a of the blade portion 22 and the inclined portion 26, the weight of the harvesting knife 17 can be reduced by enlarging the opening 25 as much as possible while sufficiently securing the strength required for the load when cutting by the blade portion 22.

(other embodiments)

(1) In the above embodiment, the opening 25 is formed in a triangular shape as a whole, but instead of this structure, the opening 25 may be formed in a state where the triangular portion is connected to an extended portion having various shapes such as a rectangular portion or a semicircular portion, and various changes in shape are possible.

(2) In the above embodiment, the opening 25 is formed as a through hole that penetrates the center portion of the harvesting knife 17 in the vertical direction, but instead of this configuration, the opening 25 may extend to the rear end edge of the harvesting knife 17 and be opened rearward.

(3) In the above embodiment, the mounting portions (rivet mounting holes 24) are provided on both the left and right sides of the base portion 21, but instead of this configuration, only 1 mounting portion may be provided.

(4) In the above embodiment, the opening 25 extends to a portion corresponding to the mounting portion (rivet mounting hole 24), and the opening 25 is provided in a state of not overlapping with the mounting portion in the left-right direction, but instead of this configuration, the opening 25 extends to a portion on the front side of the mounting portion, and the opening 25 is provided in a state of overlapping with the mounting portion in the left-right direction.

(5) In the above embodiment, the opening 25 is formed in a portion not overlapping with the region Q where the heat treatment is performed, but instead of this configuration, the opening 25 may be formed in a state overlapping with the region Q where the heat treatment is performed.

(6) In the above embodiment, the opening 25 is formed in a state where the height L2 of the triangular portion is larger than the distance L1 between the edge portion 22a of the blade portion 22 and the inclined portion 26 when the inclined portion 26 of the opening 25 is a bottom portion, but instead of this configuration, the opening may be formed in a state where the distance L1 is the same as the height L2, or in a state where the distance L1 is larger than the height L2.

(7) In the above embodiment, the harvesting knife 17 is connected to the holder (harvesting portion) by a rivet, but instead of this configuration, the harvesting knife 17 may be fixed by another fixing portion such as a bolt.

(availability in industry)

The utility model discloses can be applicable to the receipts cutting knife that is used for harvesters such as combine.

Claims (14)

1. A harvesting knife, which is used for a harvesting part of a harvester,

the harvesting knife is characterized in that the harvesting knife is arranged in the middle of the knife body,

comprising: a harvesting knife body part, the front part of which is narrower than the rear part and is approximately triangular in plan view; and a base portion for mounting, connected to the rear portion of the harvesting blade body portion,

an opening is formed in the harvesting knife so as to straddle the harvesting knife body and the base,

the opening portion has a triangular portion having an inclined portion along the blade portions on both left and right sides of the harvesting blade body portion.

2. The harvesting knife of claim 1,

the triangular portion spans the harvesting blade body portion and the base portion.

3. The harvesting knife of claim 1,

the left and right sides of the base part are provided with installation parts for installing the harvesting part,

the opening extends to a portion between the right and left mounting portions.

4. The harvesting knife of claim 2,

the base part is provided with a mounting part mounted on the harvesting part,

the opening portion extends to a portion corresponding to the mounting portion.

5. The harvesting knife of claim 3,

the opening is provided so as not to overlap the mounting portion in the left-right direction.

6. The harvesting knife of claim 4,

the opening is provided so as not to overlap the mounting portion in the left-right direction.

7. The harvesting knife of claim 5,

the mounting portions are provided on both left and right sides of the base portion,

the left and right attachment portions are provided at a distance in the left-right direction so as not to overlap the opening portion.

8. The harvesting knife of claim 6,

the mounting portions are provided on both left and right sides of the base portion,

the left and right attachment portions are provided at a distance in the left-right direction so as not to overlap the opening portion.

9. The harvesting knife according to any one of claims 1 to 8,

the whole opening part is triangular.

10. The harvesting knife according to any one of claims 1 to 8,

the opening is formed in a portion not overlapping with the region subjected to the heat treatment.

11. The harvesting knife according to any one of claims 1 to 8,

the opening portion is formed in a state in which a height of the triangular portion is larger than a distance between the edge portion of the blade portion and the inclined portion of the opening portion corresponding to the blade portion when the inclined portion of the opening portion is a bottom portion.

12. A cutting device is characterized in that a cutting device is arranged,

having the harvesting knife of any of claims 1 to 8.

13. A harvesting part is characterized in that,

having a shut-off device according to claim 12.

14. A harvester is characterized in that a harvester is provided,

having the harvesting portion of claim 13.

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