JP2007159505A - Clippers type reaper for harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clippers type reaper for a harvester, which can exhibit an excellent cutting performance, while silently driven. <P>SOLUTION: The fixed blade piece parallel pitch P1 of a fixed blade 10 is identical to the movable blade piece parallel pitch P2 of a movable blade 20. A reaping blade-driving mechanism 40 reciprocates and drives the movable blade 20 so that each movable blade piece 21 of the movable blade 20 slides over three fixed blade pieces 13a, 13b, 13c of the fixed blade 10. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a fixed blade in which a plurality of fixed blade pieces are arranged in parallel, and a plurality of movable blade pieces are arranged in parallel at a movable blade parallel pitch having the same length as the fixed blade piece parallel pitch of the fixed blade. The present invention relates to a clipper type mowing device for a harvesting machine provided with a movable blade.

Conventionally, for example, Patent Document 1 discloses a clipper-type mowing device.
In Patent Document 1, a plurality of fixed blades 4 (corresponding to fixed blade pieces) are placed and fixed on the receiving blade base 3 in a state where they are arranged in a line in the longitudinal direction of the receiving blade table 3 to form a fixed blade. A plurality of movable blades 6 (corresponding to movable blade pieces) are mounted and fixed on the knife bar 5 in a state where they are arranged in a line in the longitudinal direction of the knife bar 5 to constitute a movable blade.

JP 2003-23830 A (paragraph [0016], FIGS. 1, 2 and 3)

  In this type of cutting device, the cutting blade drive mechanism is configured to reciprocate the movable blade with respect to the fixed blade. If this mowing blade drive mechanism employs a mechanism that reciprocally drives the movable blade so that each movable blade piece of the movable blade is in sliding contact with only the two fixed blade pieces of the fixed blade, the following problems may occur. is there.

As a cutting blade driving mechanism, a movable blade operating body provided integrally with the movable blade, a swing link having an operating portion engaged with an engaging groove of the movable blade operating body, and a rotational driving force of the driving rotary body are provided. In some cases, a drive type that is converted into linear reciprocating power and transmitted to the swing link is used.
In this case, when the movable blade piece is in sliding contact with only the two fixed blade pieces, the movable blade piece cuts the pedicle with the fixed blade piece near both ends of the moving stroke of the movable blade piece. However, the movable blade piece moves away from one of the two fixed blade pieces to be slid and moves toward the other at an intermediate portion of the moving stroke of the movable blade piece. Then, the moving speed of the movable blade piece when the movable blade piece is in sliding contact with the fixed blade piece so that the movable blade piece is cut by sandwiching the pedicle with the fixed blade piece is the two fixed blades to which the movable blade piece is slidable. It becomes slower than the moving speed of the movable blade piece when moving between the two fixed blade pieces so as to move away from one of the pieces toward the other. For this reason, in order for the movable blade piece to come into sliding contact with the fixed blade piece at an appropriate moving speed so that good cutting performance is exhibited, the drive rotor needs to be driven at a high speed, and the drive sound is generated. Tended to be expensive.

  An object of the present invention is to provide a clipper type mowing device for a harvesting machine that can be driven advantageously in terms of driving sound while exhibiting good cutting performance even if the above-described driving type cutting blade driving mechanism is adopted. Is to provide.

In the first invention, the fixed blade in which a plurality of fixed blade pieces are arranged in parallel, and the movable blade parallel pitch in which the plurality of movable blade pieces have the same length as the fixed blade piece parallel pitch of the fixed blade. In the clipper type mowing device for the harvesting machine equipped with the movable blade arranged in parallel,
A cutting blade drive mechanism that reciprocally drives the movable blade with respect to the fixed blade so as to reciprocate the movable blade in a state where each movable blade piece of the movable blade is in sliding contact with the three fixed blade pieces of the fixed blade. It is configured.

  In other words, when the movable blade is reciprocally driven by adopting the drive type as described above as the cutting blade drive mechanism, each movable blade piece is fixed to three slidable contact objects near both ends of the movable blade movement stroke. It slidably contacts with the fixed blade piece located at the end of the blade piece, and slidably contacts with the fixed blade piece located at the center of the three fixed blade pieces to be slid at the center of the movable blade movement stroke. It will be a state. As a result, each movable blade piece is in sliding contact with the central fixed blade piece to be slid at the center of the movable blade movement stroke where the moving speed of the movable blade with respect to the fixed blade is higher than the vicinity of both ends of the movable blade movement stroke. Cut the pedicles. Then, even if the movable blade is reciprocated at a driving speed at which the moving speed of the movable blade piece with respect to the fixed blade is relatively low near both ends of the movable blade movement stroke, the moving speed of each movable blade piece is suitable for cutting the stem. Thus, the cutting process can be performed by slidingly contacting the fixed blade piece.

  Therefore, according to the first aspect of the present invention, even when the drive type cutting blade driving mechanism as described above is adopted, each movable blade piece is in sliding contact with the fixed blade piece at a moving speed suitable for cutting the pedicle. The cutting operation can be performed in a state where cutting failures such as pushing down are unlikely to occur. Nevertheless, it is only necessary to drive at a driving speed at which the moving speed of the movable blade piece is relatively low near both ends of the movable blade moving stroke, and the driving sound can be advantageously driven such that the driving sound can be made as quiet as possible.

  In the second invention, in the configuration of the first invention, the forward and return movement strokes in which the movable blade is driven to reciprocate by the cutting blade driving mechanism is set to 2 of the fixed blade piece parallel pitch of the fixed blade. The moving stroke has a length corresponding to double.

  That is, at both ends of the movable blade movement stroke, the movable blade piece overlaps with the fixed blade piece positioned at the end of the three fixed blade pieces to be slid in the sliding direction, and the movable blade piece is fixed to the end. The movable blade is driven to reciprocate in a state where there is no gap with the blade piece.

  Therefore, according to the second aspect of the present invention, the movable blade piece reciprocates the movable blade while the movable blade pieces are in sliding contact with the three fixed blade pieces. The cutting operation can be performed while avoiding a cutting failure such that a gap is formed between the pieces and a cutting residue is generated as much as possible.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, a body frame 4 of a self-propelled aircraft including a crawler type traveling device 1, a driving unit equipped with a driving seat 2, and a driving unit equipped with an engine 3 provided below the driving seat 2 A harvesting pretreatment unit 5 is connected to the front part, and a grain recovery unit 7 equipped with a threshing device D and a bagging tank 6 is provided on the rear side of the machine body frame 4 to constitute a combine. .

This combine harvests grains such as rice and wheat.
In other words, the pre-cutting processing unit 5 is connected to a lowering operation state in which the lower part of the triggering device 5a is located near the ground and a rising non-working state in which the triggering device 5a is raised from the ground so as to be movable up and down. ing. When the pre-cutting processing unit 5 is moved down and the self-propelled machine is run, the pre-cutting processing unit 5 causes the planted culm to be caused and processed by the device 5a, and the mowing device C performs the mowing processing. The reaped cereal meal is supplied to the threshing apparatus D by a supply apparatus (not shown). The threshing apparatus D threshs the harvested cereal meal from the pre-cutting processing unit 5. The grain collection unit 7 collects the threshing grains from the threshing device D by the hopper-type bagging tank 6, and puts the grain bags 8 in the bagging cylinders 6 a provided at a plurality of locations below the bagging tank 6. The threshing grains collected in the bagging tank 7 are bagged.

  The mowing device C will be described in detail. As shown in FIG. 2, the mowing device C includes a single fixed blade 10 supported by the bases of a plurality of weeding frames 1 arranged at predetermined intervals in the lateral direction of the machine body. The movable blade 20 is provided on the left and right portions of the fixed blade 10, and the movable blade 20 is made into the fixed blade 10 by a cutting blade driving mechanism 40 provided near the rear side on one end side of each movable blade 20. On the other hand, it is configured to be driven so as to reciprocate and is a clipper type mowing device.

  As shown in FIGS. 2, 4, and the like, the fixed blade 10 includes a single fixed blade base 11 supported on the base portion of each weed frame 9, and a horizontal plane on the upper surface side of the front edge portion of the fixed blade base 11. A plurality of fixed blade pieces 13 arranged in the direction and fastened by rivets 12 are provided.

  As shown in FIGS. 2 and 4, the movable blades 20 are fixed to each other by a plurality of movable blade pieces 21 arranged in the lateral direction of the machine body and rivets 22 on the upper surface side of the movable blade pieces 21. One knife bar 23 connecting the movable blade pieces 21 is provided.

  As shown in FIG. 3 and the like, the fixed blade piece parallel pitch P1 included in the fixed blade 10 and the movable blade piece parallel pitch P2 included in each movable blade 20 are set to a parallel pitch of the same length.

  Support means 30 having a knife clip 31 is applied to both ends of each movable blade 20, and the left and right movable blades 20 are slidable in the lateral direction of the fixed blade 10 via the support means 30. It is supported by. The movable blade 20 on the left side includes the movable blade operating body 24 provided near a portion on which the support means 30 located on the outermost side of the body among the plurality of support means 30 of the movable blade 20 acts. The cutting blade drive mechanism 40 is configured to be reciprocally driven so as to reciprocate 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 includes the movable blade operation body 24 provided near a portion on which the support means 30 located on the outermost side of the body among the plurality of support means 30 of the movable blade 20 acts. The cutting blade drive mechanism 40 is configured to reciprocate in a state of reciprocating and sliding in the lateral direction of the machine body with respect to the right portion of the fixed blade 10.

  As shown in FIGS. 2 and 3, each of the cutting blade drive mechanisms 40 is a bearing engaged with an engagement groove provided with a pair of left and right operation plates 25 of the movable blade operation body 24 of the movable blade 20 to be driven. A rocking link 42 provided with an operation roller 41 at one end, an interlocking rod 43 whose one end is connected to the other end of the rocking link 42 so as to be relatively rotatable, and the other end of the interlocking rod 43. A drive rotator 44 whose side is connected to the peripheral edge portion so as to be relatively rotatable is provided.

  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.

  The drive rotator 44 of each cutting blade drive mechanism 40 is set and assembled in the following rotation phase. That is, when the left movable blade 20 slides toward the outer side of the machine body, the right movable blade 20 also slides toward the outer side of the machine body, and the left movable blade 20 moves toward the outer side of the machine body. When sliding, the movable blade 20 on the right side is also slid toward the body side, that is, the rotary blade 20 is driven to reciprocate in a state where the pair of left and right movable blades 20 are reciprocally slid in opposite directions. The phase is set and assembled.

  The length L of the stroke in which the operation unit 41 of the swing link 44 of each cutting blade drive mechanism 40 moves in the lateral direction of the machine body is set to the following length. That is, the length of reciprocating drive of the movable blade 20 in a state in which the forward and return moving stroke S when the movable blade 20 is reciprocated is a moving stroke corresponding to twice the fixed blade parallel pitch P1 of the fixed blade 10. Is set.

  Thereby, each cutting blade drive mechanism 40 reciprocates the movable blade 20 as shown in FIGS. That is, the movable blade 20 is reciprocally driven so that each movable blade piece 21 of the movable blade 20 is in sliding contact with the three fixed blade pieces 13 of the fixed blade 10. More specifically, in the vicinity of both ends of the movable blade moving stroke S, each movable blade piece 21 is fixed blade piece 13a located at the end of three fixed blade pieces 13a, 13b, 13c that are to be slidably contacted. 13b, and at the center of the movable blade movement stroke S, each movable blade piece 21 is the center of the three fixed blade pieces 13a, 13b, 13c that are to be slidably contacted. Further, the moving speed Vb at which each movable blade piece 21 is in sliding contact with the central fixed blade piece 13b to be slidably contacted is fixed to the fixed blade at the end of the sliding contact. The movable blade 20 is reciprocally driven so as to be faster than the moving speeds Va and Vc in sliding contact with the pieces 13a and 13c.

  That is, the clipper type mowing device C is configured such that the pair of left and right movable blades 20 reciprocate in directions opposite to each other on the fixed blade 10, and the end portions of the pair of left and right movable blades 20 open and close. Further, in each of the movable blades 20 on the left and right sides, each movable blade piece 21 has a fixed blade piece 13b positioned at the center of the three fixed blade pieces 13a, 13b, 13c to be slidably contacted. Is configured to slidably contact with the fixed blade pieces 13a and 13c located at both ends at a higher moving speed than the pair of left and right movable blades 20 by the cutting blade driving mechanism 40 to reciprocate the cutting blade preprocessing unit 5. A fixed blade piece 13 positioned on the left side of the fixed blade 10 and a left movable blade that moves relative to the fixed blade piece 13 from the plurality of weeding tools 9a positioned on the left side of the fixed blade 10 20 The movable blade piece 21 is used for cutting, and the planted cereals from the plurality of weeding tools 2 positioned on the right side of the pre-cutting processing unit are fixed to the fixed blade piece 13 positioned on the right side of the fixed blade 10, The cutting process is performed by the movable blade piece 21 of the right movable blade 20 that moves relative to the fixed blade piece 13.

  As shown in FIGS. 7, 8 (b) and 8 (b), a dustproof plate 32 is provided below the weed frame 9 located at the center of the plurality of weed frames 9 arranged in the lateral direction of the aircraft. It is provided in a state of being supported by the weeding frame 9 via the attachment plate 33 and the sandwiching plate 34. This dust-proof plate 32 fills the space between the cutting device C and the weeding frame 9 and makes it difficult for straw scraps and mud to enter between the cutting device C and the weeding frame 9, and thereby the end of each movable blade 20. It makes it difficult to catch straw scraps and deposits straw scraps and mud on the cutting device C.

The threshing apparatus D will be described in detail. The threshing apparatus D is configured as shown in FIG.
That is, the threshing feed chain 50 clamps the stock of the harvested cereal from the pre-cutting processing unit 5 and conveys it to the rear side of the threshing machine to supply the tip side of the harvested cereal to the handling chamber 51 and rotate it. The barrel 52 is used for handling, and the threshing waste straw is carried out from the dust feeding port 53 of the handling chamber 51 by the threshing feed chain 50. The threshing waste straw that is carried out of the handling chamber 51 and conveyed to the rear side of the threshing machine body is brought into contact with a scorpion dropping bowl 55 made up of a plurality of piano wires that are supported by the support bowl 54 in the horizontal direction of the threshing machine body, The cereals that have entered the threshing waste straw are scraped off, and then the threshing waste straw from the threshing feed chain 50 is transported to the rear part of the threshing machine body by the waste straw carrier chain 56 and discharged out of the machine body. The brazing waste discharged from the dust feeding port 53 of the handling chamber 51 is loosened by the rotating processing drum 57, and the grains are separated from the straw debris and dropped.

  The threshing processed material dropped from the receiving net 58 of the handling chamber 51 and the dust feed port 53 is subjected to sorting processing into grains and dust by the swing sorting device 59 and the sorting wind from the tang 60, and the first of the grains. The processed material is dropped onto the first screw conveyor 61 and the second processed material is dropped onto the second screw conveyor 62, and the dust is discharged from the rear portion of the threshing machine body by the dust exhaust fan 63 together with the sorting wind. The first screw conveyor 61 carries the grain from the swing sorting device 59 to the lateral side of the threshing machine body and supplies it to the supply device 65, and this supply device 65 conveys the threshed grain to the bagging tank 6. . The No. 2 screw conveyor 62 conveys the No. 2 processed product from the swing sorting device 59 to the lateral outside of the threshing machine body and supplies it to the lifting device 64, and this feeding device 64 supplies the No. 2 processed product to the threshing machine body. And is returned to the upper side of the swing sorting device 59 from the inlet of the threshing machine horizontal wall.

[Another Example]
Regarding the movement stroke S of the movable blade 20, the movement stroke S may be set within a range of about 1.8 to 2.2 times the fixed blade parallel pitch P1.

The present invention can be applied to a reaping device equipped such that one movable blade is reciprocally driven in addition to a reaping device equipped so that the pair of left and right movable blades 20 are reciprocated in opposite directions.
The harvesting device according to the present invention has various harvesting objects such as a combine harvester that collects threshing grains in a grain tank and stores them in addition to a combine equipped with a bagging tank 6. It can also be applied to the mowing device installed in the machine. Therefore, the various working machines such as the combine and the grass harvester are collectively referred to as a harvester.

Side view of the entire combine Top view of the whole mowing device Top view of the cutting blade drive mechanism Cross section of mowing device Explanatory drawing which shows the movable blade drive of a cutting blade drive mechanism Explanatory drawing which shows the movable blade drive of a cutting blade drive mechanism Cross-sectional view at the location where the dustproof plate is installed (A) is an AA cross-sectional arrow view of FIG. 7, (B) is a BB cross-sectional arrow view of FIG. Cross section of threshing device

Explanation of symbols

10 fixed blade 13 fixed blade piece 20 movable blade 21 movable blade piece 40 mowing blade drive mechanism P1 fixed blade piece parallel pitch P2 movable blade piece parallel pitch S movable blade movement stroke

Claims (2)

A fixed blade in which a plurality of fixed blade pieces are arranged in parallel; and a movable blade in which the plurality of movable blade pieces are arranged in parallel at a movable blade parallel pitch having the same length as the fixed blade piece parallel pitch of the fixed blade. Hair clipper type cutting device for harvesting machine,
A cutting blade drive mechanism that reciprocally drives the movable blade with respect to the fixed blade so as to reciprocate the movable blade in a state where each movable blade piece of the movable blade is in sliding contact with the three fixed blade pieces of the fixed blade. A clipper type mowing device for a harvesting machine configured in   The forward and return movement strokes in which the movable blade is reciprocated by the cutting blade drive mechanism are set to a movement stroke having a length corresponding to twice the fixed blade piece parallel pitch of the fixed blades. The hair clipper type mowing device for the described harvester.

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