JP2007159506A - Clippers type reaper for harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clippers type reaper in which a pair of right and left movable blades 20 are reciprocated and driven on a fixed blade 10 in mutually opposite directions, and which can avoid that straw wastes and mud are stayed and accumulated in a space S between the ends of both the movable blades 20. <P>SOLUTION: A cover 50 is connected to the end of one of a pair of right and left movable blades 20. The cover 50 is extended above the end of the other movable blade 20 not connected to the cover 50, and covers a space S between the ends of both the movable blades 20. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a clipper type mowing device for a harvesting machine in which a pair of left and right movable blades are reciprocally driven on a fixed blade in directions opposite to each other.

The above clipper type mowing device is reciprocally driven by reciprocating the pair of left and right movable blades in directions opposite to each other and adopting a single movable blade from one end to the other end of the fixed blade. It can be driven while suppressing the generation of drive vibration. As this type of clipper type mowing apparatus, there has been a conventional one shown in Patent Document 1, for example.
The one disclosed in Patent Document 1 includes a fixed blade 2 and a pair of left and right movable blades 3, 3, and the pair of left and right movable blades 3, 3 are reciprocally driven in opposite directions by a pair of crank mechanisms 4. Is.

Japanese Patent Laid-Open No. 10-164949 (paragraph [0006], FIGS. 1 and 3)

  In this type of cutting device, the pair of left and right movable blades move in directions opposite to each other, so the ends of the pair of left and right movable blades open and close, and straw scraps and mud enter between the ends. If there is, the scraps and mud may stay or accumulate on the fixed blade, which may cause cutting failure or driving trouble of the cutting device. In particular, when the end of the movable blade is positioned above the cutting blade support, the straw scraps and mud that have entered the movable blade and placed on the fixed blade are caught or placed on the cutting blade support. It was difficult to fall, and troubles due to retention and accumulation of straw scraps and mud were easy to occur.

  An object of the present invention is to provide a reaping device that can easily avoid retention and accumulation of straw scraps and mud while opening and closing between movable blade end portions.

In the first aspect of the invention, in the clipper type mowing device for the harvesting machine, the pair of left and right movable blades are reciprocally driven in directions opposite to each other on the fixed blade.
A cover is provided that extends from one of the pair of left and right movable blades to above the other end and covers the upper part between the ends of the pair of left and right movable blades.

  That is, even if the end portions of the movable blade are opened, the upper portion between the end portions is covered with the cover, and it is difficult for straw scraps and mud to enter between the end portions. Even if weeping waste or mud gets stuck or jumps under the cover and gets stuck or caught on the fixed blade or mowing blade support, it extends from one movable blade and reciprocates with this movable blade. It comes into contact with the moving cover and falls easily due to the scraping action of the cover.

  Therefore, according to the first aspect of the present invention, while the end portions of the movable blade are opened and closed, it is avoided by the covering with the cover and the scraping action that the scraps and mud are accumulated and accumulated between the end portions. It is easy to carry out harvesting work efficiently because cutting defects and driving troubles due to straw scraps and mud are less likely to occur.

  According to the second aspect of the invention, in the configuration of the first aspect of the invention, the knife bar provided in the one movable blade and the sliding provided in the fixed blade in the attachment portion connected to the one movable blade of the cover. A sliding contact portion is provided between the guide body and slides on the sliding guide body.

  That is, as the movable blade is driven to reciprocate, the cover mounting portion slides on the sliding guide body at the sliding contact portion, and thereby the movable blade can be moved while suppressing the play of the movable blade against the fixed blade. Reciprocating drive is possible.

  Therefore, according to the second aspect of the present invention, what can be driven quietly so that there is little backlash of the movable blade can be advantageously obtained in terms of structure and economy by using the cover as a sliding contact member.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, one fixed blade 10 supported on the base of a plurality of weed frames 1 arranged in the transverse direction of the machine body at a predetermined interval, provided on the left and right portions of the fixed blade 10 The movable blade 20 is provided to constitute a clipper type mowing device.

  This clipper type mowing device is used to harvest and process planted cereals such as rice and wheat, and to collect and store threshing grains in a grain tank, or to collect and store them in a bagging hopper. A planted grain culm introduced in a weeding frame 2 from a weeding tool 2 provided on the front end side of each weeding frame 1. In detail, it is configured as follows.

  As shown in FIGS. 1, 2, 3, etc., the fixed blade 10 is a single fixed blade base 11 attached to the cutting blade support 3 (see FIG. 8) connected to the lower side of the base of each weed frame 1. The fixed blade base 11 is provided with a plurality of fixed blade pieces 13 arranged on the upper surface side of the front edge portion of the fixed blade base 11 in the lateral direction of the machine body and fastened by rivets 12.

  As shown in FIGS. 1, 2, 3, etc., each movable blade 20 has a plurality of movable blade pieces arranged in the transverse direction of the machine body at an arrangement pitch having the same length as the arrangement pitch of the fixed blade pieces 13 of the fixed blade 10. 21. A single knife bar 23 is provided on the upper surface side of each movable blade piece 21 and is secured by a rivet 22 to connect the plurality of movable blade pieces 21 together.

  Support means 30A, 30B, 30c provided with a knife clip 31 are applied to the three positions of both end portions and an intermediate portion of each movable blade 20, and each movable blade 20 is provided with each support means 30A, 30B, 30c. Via the fixed blade 10 so as to be slidable in the lateral direction of the machine body. The movable blade 20 on the left side is provided with a movable blade operating body 24 provided near a portion on which the support means 30A located on the outermost side of the body among the plurality of support means 30A, 30B, 30c of the movable blade 20 acts. The cutting blade driving mechanism 40 acting on the reciprocating drive is configured to reciprocate in a state of reciprocatingly sliding in the lateral direction of the machine body with respect to the left portion of the fixed blade 10. The movable blade 20 on the right side is provided with a movable blade operating body 24 provided near a portion where the support means 30A located on the outermost side of the body among the plurality of support means 30A, 30B, 30B of the movable blade 20 acts. The cutting blade drive mechanism 40 acting on the reciprocating drive is configured to reciprocate in a state of reciprocating sliding in the lateral direction of the machine body with respect to the right portion of the fixed blade 10.

  As shown in FIGS. 1, 4, and 5, each cutting blade drive mechanism 40 is an operation composed of a bearing that is engaged between a pair of left and right operation plates 25 of the movable blade operation body 24 of the movable blade 20 to be driven. An oscillating link 42 provided with a roller 41 at one end, an interlocking rod 43 whose one end is connected to an end on the other end of the oscillating link 42 so as to be relatively rotatable, and the other end of the interlocking rod 43 is a peripheral portion. And a drive rotator 44 that is connected in a relatively rotatable manner.

  An intermediate portion of the swing link 42 is rotatably connected to a support shaft 45 provided in a grain feeder (not shown), and the swing link 42 reciprocates around the shaft core of the support shaft 45. It swings. The drive rotator 44 is supported by an end portion of a transmission case 46 constituting a frame of the pre-cutting processing unit via a rotation support shaft 47 so as to be able to be driven and rotated.

  As a result, each cutting blade drive mechanism 40 converts the rotational driving force of the driving rotary body 44 driven around the vertical axis of the machine body of the rotary support shaft 47 into linear reciprocating power by the interlocking rod 43 so as to swing the link. 42, the swing link 42 is driven so as to reciprocate at a constant swing angle around the vertical axis of the body of the support shaft 45, and the reciprocating power of the swing link 42 is transmitted. The movable blade 10 is driven to reciprocate by being transmitted to the movable blade operating body 24 by the operation roller 41.

  When the left movable blade 20 slides toward the outer side of the machine body due to the setting of the rotational phase of the drive rotating body 44 or the like, the pair of cutting blade drive mechanisms 40 also moves the right movable blade 20 to the outside of the machine body. When the left movable blade 20 slides toward the body side, the right movable blade 20 also slides toward the body side, that is, a pair of left and right movable blades. The left and right movable blades 20 are driven to reciprocate while the blades 20 are reciprocatingly slid in opposite directions.

  In other words, this clipper type mowing device is in a state in which the pair of left and right movable blades 20 reciprocate in directions opposite to each other on the fixed blade 10, and between the ends of the pair of left and right movable blades 20 in the lateral direction of the body. The pair of left and right movable blades 20 are reciprocally driven by a pair of cutting blade driving mechanisms 40 so as to open and close above the cutting blade support 3 provided in the weed frame 1 located in the center of The fixed blade piece 13 located on the left portion of the fixed blade 10 and the movable blade of the left movable blade 20 that moves relative to the fixed blade piece 13 The fixed blade piece 13 positioned at the right side of the fixed blade 10 and the fixed blade piece 13, which are cut by the piece 21, and planted cereals from the plurality of weeding tools 2 positioned on the right side of the cutting portion are Move right relative to Processing cutting by the movable blade piece 21 of the movable blade 20.

  As shown in FIGS. 6 and 7, the cover 50 extends from one end of the pair of left and right movable blades 20 above the end of the other movable blade 20. Even between the end portions of the movable blade 20 so as to cover the end portion S of the movable blade 20 and in a state where the end portions are opened to the maximum size for reciprocal movement in the opposite directions of the two movable blades 20. It is configured to have an extended length sufficient to cover the whole.

  Thereby, while the cover 50 avoids the waste scraps and mud from entering between the ends S of the left and right movable blades 20, the straw scraps and mud are stuck between the ends and jumped in. Even if the fixed blade 10 or the cutting blade support 3 below the end portion is caught, it comes into contact with the cover 50 that reciprocates together with the movable blade 20 and is easily dropped by receiving the scraping action by the cover 50. Therefore, the cutting process can be performed.

  As shown in FIGS. 2 and 3, the support means 30 </ b> A for supporting and acting on the end of each movable blade 20 on the laterally outer side of the machine body is a rear sliding guide fixed to the fixed blade base 10 by a connecting bolt 32. The knife clip 31 made of a spring plate whose rear end is fixed to the fixed blade base 11 together with the rear sliding guide body 33 by the body 33 and the connecting bolt 32, and is connected to the front end of the knife clip 31 by a rivet 34. Further, the front sliding guide body 35 is provided. By connecting a member made of a material different from the knife bar 23 to the knife bar 23 of the movable blade 20 by the rivet 22, the knife bar 23 is provided with a slide portion 26 having hardness and wear resistance superior to the knife bar 23. The support means 30A slidably holds the slide portion 26 of the knife bar 23 by the front sliding guide body 35 and the rear sliding guide body 33, thereby moving the movable blade 20 relative to the fixed blade 10. It is supported to slide in the lateral direction of the aircraft.

  As shown in FIGS. 6, 7, and 8, the support means 30 </ b> C that supports and acts on the end of the movable blade 20 to which the cover 50 is connected is located on the fixed blade base 11. A rear sliding guide body 33 fixed by 32, a knife plate 31 made of a spring plate having a rear end fixed to the fixed blade base 11 together with the rear sliding guide body 33 by the connecting bolt 32, and the knife clip 31 A front sliding guide body 35 connected by a rivet 34 is provided at the front end portion. The mounting portion 51 connected to the movable blade 20 of the cover 50 by the rivet 22 slides on the rear sliding guide body 33 and the front sliding guide body 35 of the support means 30C provided in the fixed blade 10. A rear sliding contact portion 52a disposed between the knife bar 23 of the movable blade 20 and the rear sliding guide body 33, and a front sliding contact portion disposed between the knife bar 23 of the movable blade 20 and the front sliding guide body 35. 52b is provided. The mounting portion 51 of the cover 50 is made of a material different from that of the knife bar 23, and the rear sliding contact portion 52a and the front sliding contact portion 52b have hardness and wear resistance superior to the knife bar 23. I have.

  As shown in FIG. 4, the passive link 26 is detachably attached to the pair of left and right operation plates 25 of the movable blade operation body 24 provided in the movable blade 20 by connecting bolts 27, thereby operating the swing link 42. A contact surface 28 that contacts the roller 41 is formed. Thereby, when wear occurs on the contact surface 28, if only the passive plate 26 is replaced, it is possible to cope with it without replacing the movable blade 20 and the movable blade operation body 24.

[Another Example]
The clipper type mowing apparatus according to the present invention is not limited to the combine, and can also be applied to the clipper type mowing apparatus installed in various harvesters other than the combine.

Top view of the clipper type mowing device for combine Plan view at the location of the support means of the mowing device Sectional view at the support means location of the mowing device Plan view at the cutting blade drive mechanism action point of the mowing device Front view of the cutting blade drive mechanism operating point of the mowing device Plan view at the location of the cover of the mowing device Sectional view at the location where the cover of the mowing device is installed Cross section of mowing device

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Fixed blade 20 Movable blade 23 Knife bar 33, 35 Sliding guide body 50 Cover 52a, 52b Sliding contact part

Claims (2)

A clipper type mowing device for a harvesting machine in which a pair of left and right movable blades are driven to reciprocate in directions opposite to each other on a fixed blade,
A clipper type mowing device for a harvesting machine provided with a cover extending from one end of the pair of left and right movable blades to the other end and covering the upper portion between the ends of the pair of left and right movable blades.   The mounting portion connected to the one movable blade of the cover is positioned between a knife bar included in the one movable blade and a slide guide body included in the fixed blade, and slides on the slide guide body. The clipper type mowing device for a harvesting machine according to claim 1, further comprising a sliding contact portion.

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