JPH0537018U - Reaper - Google Patents

Abstract

(57) [Abstract] [Purpose] By eliminating wear of the knife bar and friction plate of the sliding part, rattling of the cutting blade is eliminated, the load on the driving system of the cutting blade is reduced, and the cutting blade An object of the present invention is to provide a reaping device that prevents the mouth from opening and has excellent reaping properties. A cutting blade 7 in which a lower blade 2 and an upper blade 5 are slidably overlapped with each other, and at least the upper blade 5 of the cutting blade 7 is a knife head 4, 4a, 4b interlocked with a drive unit 8. In the mowing device that reciprocates in the longitudinal direction with the reciprocating movement of the above to mow grain culms and the like, a knife head 4 for fixing the upper blade 5 with a guide portion 11 for guiding the cutting blade 7 along its longitudinal direction.
Is provided between the blade holder 1 for fixing the lower blade 2 and the knife heads 4a, 4b for fixing the upper blade 5 and the lower blade 2 and on the drive unit 8 side.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a cutting device for grain culms and the like, and more specifically, it prevents wear of sliding portions such as a knife bar and a friction plate to reduce the load on the drive system of the cutting blade and to open the blade of the cutting blade. The present invention relates to a reaping device that prevents and excels in reaping.

[0002]

[Prior Art]

 Regarding the cutting blade structure of the reciprocating blade type cutting device that has been conventionally used, the following two types of cutting blade structures are generally well known. (1). One is a cutting blade structure in which only the upper blade 5, which is one of the cutting blades 7, can reciprocate, as shown in FIG. The lower blade 2 and the friction plate 3 are fixed to the blade holder 1, and the knife bar 6 fixed to the knife head 4 together with the upper blade 5 slides between the friction plate 3 of the blade holder 1 and the rear portion of the lower blade 2. The upper blade 5 is reciprocally movable in the longitudinal direction of the lower blade 2 so as to be movably fitted therein. (2). The other is a cutting blade structure in which both the upper blade 5 and the lower blade 2 of the cutting blade 7 can reciprocate, as shown in FIG. The upper blade 5 and the lower blade 2 are fixed to the upper and lower knife heads 4a and 4b along the friction plate 3 (partially shown) fixed to the blade holder 1 and the U-shaped knife clip (not shown). The upper and lower knife bars 6a and 6b are slidably fitted between the friction plates, and the upper blade 5 and the lower blade 2 of the cutting blade 7 can be moved back and forth in the longitudinal direction.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned harvesting device, the shearing force that shears the grain culm when the cutting blade is operated causes the knife bar provided on the knife head to sandwich and shear the grain culm at the slanted grain cutting portion. Since a load is also applied in the front-back direction that intersects the sliding direction due to the moment generated at that time, the knife bar and friction plate of the sliding part may wear, causing rattling and unstable cutting performance. there were.

Further, due to the occurrence of rattling, the cutting blade drive system is required to have an excessive load, and when the culm cutting portions of the upper blade and the lower blade which are overlapped are worn, the cutting blade is opened. Then, there was a problem that the grain culm was bitten between the upper blade and the lower blade, resulting in poor harvesting of the grain culm. The purpose of this invention is to eliminate the rattling of the cutting blade by preventing wear of the knife bar and friction plate of the sliding part, reduce the load on the drive system of the cutting blade, and open the mouth of the cutting blade. It is to provide a reaping device which prevents the occurrence of eclipse and has an excellent reaping property.

[0005]

[Means for Solving the Invention]

 In order to achieve the above object, this invention is a cutting blade in which a lower blade and an upper blade are slidably overlapped with each other, and at least the upper blade of the cutting blade moves together with the reciprocating movement of a knife head interlocked with a drive unit. In a mowing device that reciprocates in the longitudinal direction to mow grain culms and the like, a guide part for guiding the mowing blade along its longitudinal direction is provided with a knife head for fixing the upper blade and a receiving blade for fixing the lower blade. The gist of the invention is that it is provided on the drive unit side between the stand and between the respective knife heads for fixing the upper blade and the lower blade.

[0006]

[Function of the device]

 The present invention is configured as described above, and the guide portion for guiding the cutting blade in the longitudinal direction is provided between the knife heads or between the knife head and the blade holder and on the drive portion side. Regulates the load in the direction that intersects the sliding direction of the knife head, and the knife bar receives only the load in the sliding direction, so the knife bar can smoothly reciprocate without causing wear with sliding parts such as friction plates. Move. In addition, since the sliding parts are prevented from wearing, the cutting blade does not rattle in the front-back direction, and the guide part is on the drive part side to support the knife head. Even if the blade is worn, vertical rattling that occurs between the upper and lower blades is restricted to prevent the cutting blade from opening.

[0007]

[Example of device]

 An embodiment of the present invention will be described below with reference to the accompanying drawings. The same components as those of the conventional example are designated by the same reference numerals. FIG. 1 is a partial plan view of a cutting device in which an upper blade of a cutting blade according to a first embodiment of the present invention reciprocates. The cutting blade 7 is composed of a lower blade 2 and an upper blade 5, and the lower blade 2 has its rear end side, as shown in FIG. 2, at the front end side of the blade holder 1 fixed to the frame (not shown) of the pretreatment section. Is fixed along the longitudinal direction. Further, a plurality of friction plates 3 are fixed to the rear edge of the lower blade 2 at a predetermined interval on the receiving base 1 along with a knife clip 10 for preventing the upper blade 5 from rising up along the longitudinal direction. There is.

The upper blade 5 is provided along the longitudinal direction of the receiving table 1, and its rear end is fixed by a connecting member 9 to the front end side of the knife head 4 whose rear end side is connected to the drive unit 8. Furthermore, below the upper blade 5, a knife bar 6 for sliding is fixed together by a connecting member 9 along the longitudinal direction of the upper blade 5. The knife bar 6 is slidably fitted between the friction plate 3 of the blade holder 1 and the rear portion of the lower blade 2, and the upper blade 5 is provided so as to overlap the lower blade 2 and can reciprocate in the longitudinal direction thereof. It has become.

The guide portion 11 that guides the upper blade 5 in the longitudinal direction of the receiving blade 1 includes a guide groove portion 12 and a guide protrusion 13. The guide groove portion 12 is fixed on the rear end side of the same surface where the lower blade 2 and the friction plate 3 of the receiving stand 1 are fixed by cutting a groove 12a along the longitudinal direction on the upper surface of the block having a rectangular cross section. The guide projection 13 also has a block shape with a rectangular cross section, is fixed to the drive section 8 side of the knife bar 6 on the same surface as the surface on which the upper blade 5 of the knife head 4 is provided, and the groove of the guide groove section 12 is fixed. The tip portion 13a of the guide protrusion 13 is engaged with 12a, and is slidable along the longitudinal direction of the receiving base 1.

Next, the operation of the first embodiment will be described. When cutting a grain culm, the drive unit 8 of the cutting device is actuated, and the upper blade 5 fixed to the knife head 4 moves in the direction of arrow a in FIG. At this time, since the cutting edge of the upper blade 5 shears the grain stalk in the direction intersecting with the direction of the arrow a 1, the knife head 4 supporting the upper blade 5 is acted on by the reaction force of the shearing force, so that the arrow a Although a load is applied in the front-rear direction intersecting the direction, the load is applied by the guide portion 11 to the knife bar 6 so that only the load in the sliding direction, which is the longitudinal direction of the blade holder 1 by the drive portion 8, is applied. The knife bar 6 makes the friction between the friction plate 3 and the rear end of the lower blade 2 extremely small, and moves smoothly in the longitudinal direction of the receiving base 1. The same applies when the upper blade 5 returns in the direction of arrow b. In this way, by restricting the load in the direction intersecting the sliding direction of the knife head 4 by the guide portion 11, the knife bar 6 receives the load only in the sliding direction, so that the knife bar 6 and the friction of the sliding portion are prevented. It is possible to prevent abrasion of the plate 3 and the like and prevent rattling of the upper blade 5 in the front-rear direction, stabilize the cutting performance of the cutting blade 7, and reduce the load on the drive system of the cutting blade 7. You can Further, since the guide portion 11 is on the side of the driving portion 8 and supports the knife head 4, even if the culm cutting portion is worn, there is vertical play between the upper blade 5 and the lower blade 2. By controlling the sticking, the cutting blade 7 can be prevented from being opened, and the stability of the cutting of grain culms can be improved.

3 and 4 show a second embodiment of the present invention. A ball is installed at the contact portion between the guide groove portion 12 and the guide protrusion 13 of the guide portion 11 of the first embodiment. Therefore, the same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. The guide portion 11 is composed of a ball guide portion 14 and a ball projection portion 15. The ball guide portion 14 is composed of a pair of elongated block pieces 14a and 14b having a plurality of freely movable balls 16 in the longitudinal direction of the side portion. The balls 16 are fixed to the rear end side of the same surface where the lower blade 2 and the friction plate 3 of the blade holder 1 are fixed so that the balls 16 face each other. The ball projection 15 also has a plurality of loosely movable balls 17 in the longitudinal direction at the lower end of the elongated block-shaped body, and is driven more than the knife bar 6 having the same surface as the surface on which the upper blade 5 of the knife head 4 is provided. The upper end is fixed to the portion 8 side. The lower end portion of the ball protrusion 15 having the ball 17 engages with the recess 14c formed between the block pieces 14a and 14b, and the ball protrusion 15 slides along the longitudinal direction of the blade holder 1. It is free to move.

In the second embodiment, in addition to the function and effect shown in the first embodiment, the guide portion 11 slides by the rolling contact of the balls 16 and 17, so that the guide portion 11 is The resulting wear is also prevented, and the load on the drive system of the cutting blade 7 can be further reduced. FIG. 5 is a partial plan view of a cutting device in which the upper and lower blades of a cutting blade according to a third embodiment of the present invention both reciprocate. As shown in FIG. 6, a friction plate 3a is fixed to the tip end side of the blade holder 1 whose rear end side is fixed to a frame (not shown) of the pretreatment unit along the longitudinal direction of the blade holder 1. ing. Further, the receiving table 1 is provided with an empty portion 1a in the longitudinal direction thereof, and the tip end side of the lower knife head 4b connecting the driving portion 8 to the rear end side thereof is movably inserted in the empty portion 1a in the longitudinal direction. ing. On the tip side of the lower knife head 4b, a lower knife bar 6b which is in sliding contact with the friction plate 3a, and the rear end side of the lower blade 2 is fixed along the knife bar 6b along the longitudinal direction of the receiving table 1. Has been.

Similarly to the lower knife head 4b, at the tip side of the upper knife head 4a, which connects the drive portion 8 to the rear end side, the rear end side of the upper blade 5 is received on the lower surface thereof via the upper knife bar 6a. The blade base 1 is fixed along the longitudinal direction, and its upper blade 5 is provided so as to overlap with the lower blade 2 and to be slidable. As shown in FIG. 7, the upper and lower knife bars 6a and 6b are friction plates 3b provided on one upper tip of a U-shaped knife clip 10 fixed to the receiving table 1 at a plurality of positions along the longitudinal direction thereof. And a friction plate 3c fixed to the receiving table 1 together with a U-shaped knife clip 10 and a lower tip portion 10a of the U-shaped knife clip 10 and the friction plate 3a are respectively slidable. It has become. The guide portion 11 is provided so as to be closer to the drive unit 8 side than the upper and lower knife bars 6a and 6b of the upper and lower knife heads 4a and 4b. The guide portion 11 is composed of a guide groove portion 12 and a guide protrusion portion 13 as in the first embodiment, and the guide groove portion 12 is in the lower guide head 4b and the guide protrusion portion 13 is in the upper guide head 4a. Are fixed so as to face the cutting blade 7 side. Further, as a matter of course, the guide portion 11 having the configuration used in the second embodiment may be used.

In the third embodiment, the upper blade 5 and the lower blade 2 of the cutting blade 7 are reciprocated in opposite directions when the cutting blade 7 is operated to cut the grain culm. It shows the same operation and effect as the example, and by engaging the guide part 11 during assembly, it is possible to assemble the upper and lower knife heads 4a and 4b firmly without shifting, and the assembly is accurate and simple. You can do it.

FIGS. 10, 11, 12, and 13 relate to a mowing device that prevents infiltration of muddy water or the like into the sliding portion of the mowing blade, and more specifically, in a soft field such as a wet field, the mowing blade is If muddy water enters the sliding part and becomes clogged, the cutting blade slide becomes heavy, resulting in damage to the cutting blade drive part. The present invention relates to a mowing device intended to improve the durability of a cutting blade drive unit by preventing muddy water from entering the moving part. Therefore, the same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

Reference numeral 21 denotes a rubber plate which is one of a double structure for preventing infiltration of muddy water and the like. As shown in FIG. 11, the rubber plate 21 has a strip shape and extends over the cutting blade 7 in its longitudinal direction. Since it reciprocates together with the upper blade 5, the mounting portion of the knife clip 10 has a rectangular notch 21a. As shown in FIG. 12, the tip end side of the rubber plate 21 where the knife clip 10 is attached together with the knife bar 6 provided on the rear end side lower surface of the upper blade 5 and the collar 22 on the upper surface of the upper blade 5. It is fixed with a rivet 23 via. As shown in FIG. 13, the portion to which the knife head 4 is attached, together with the knife bar 6 provided on the lower surface on the rear end side of the upper blade 5, is provided on the upper surface of the upper blade 5 with the rubber plate 21 via the collar 22. , The nif head 4 are laminated in this order, and are fixed by rivets 24. The rear end of the rubber plate 21 extends to the rear end of the pedestal stand 1 while covering the sliding portion X with the friction plate 3 in a free state.

Reference numeral 25 is a cover which is the other of the double structure for preventing the intrusion of muddy water, and the cover 25 has a band shape wider than the rubber plate 21, as shown in FIG. The portion to which the knife head 4 is attached has a notch portion 25a that fits the shape. As shown in FIG. 12, the cover 25 is provided on the friction plate 3 provided on the receiving table 1 via the liner 26, and the rear end side of the knife clip is placed on the liner 26. It is fixed to the blade holder 1 with bolts 27. The front end portion 25b of the cover 25 comes into contact with the upper surface of the upper blade 5 to prevent infiltration of muddy water or the like from the front of the upper blade 5. Further, the rear end portion 25c of the cover 25 is fixed to the bent portion 1c in which the rear end of the blade holder 1 is bent upward to prevent intrusion of muddy water or the like from the rear. Therefore, the cover 25 covers the rubber plate 21 and has a double structure.

In this way, the rubber plate 21 and the cover 25 form a double structure to cover the sliding portion X, so that the upper blade is used during work such as wetlands (when the machine equipped with the mowing device is moving forward and backward). Even if 5 reciprocates in its longitudinal direction, muddy water does not enter the sliding portion A of the cutting blade 7, and the knife bar 6 fixed to the upper blade 5 slides smoothly on the sliding portion X. Comes out. As a result, it is possible to prevent the cutting blade sliding part from being clogged with muddy water or the like, to prevent the cutting blade driving part from being damaged, and to improve the durability of the cutting blade drive part. come.

FIG. 14 and FIG. 15 relate to a seat in a combine, and more specifically, to a seat in a combine for the purpose of improving workability of an operator. FIG. 14 is an overall perspective view of a combine with a seat attached, where 30 is a combine, and a combine main body 31 of the combine 30 is equipped with a crawler 32 for traveling, and a front of the crawler 32 is installed. That is, in the front part of the combine body 31, a mowing part 33 for mowing grain culms is provided. Following the harvesting section 33, a lifting transport section 34 for transporting the grain culms harvested by the harvesting section 33 to the upper portion of the combine body 31 is provided on the left rear side of the combine body 31. A threshing unit 35 for threshing the cut grain is provided as a next process unit in the middle of the left side of the combine body 31 behind the transport unit 34. Following the threshing section 35, a binding / cutting section for binding or cutting the threshed straw is provided at the rear of the combine body 1.

On the other hand, on the right side of the rear of the reaping section 33, there is provided an operating section 37 for an operator to board. On the rear side of the operating section 37, on the right side of the combine body 31 adjacent to the threshing section 35. Is provided with a grain tank 38 for storing the grains that have been threshed by the threshing unit 35. The operation part 37 is provided with a seat part 40 for an operator to sit on together with the control part 39. The seat part 40 is, as shown in FIG. 15, an upper part of a pillar 41 standing on the floor surface of the operation part 37. In addition, a straddle-type seat portion 44 having a backrest portion 43 is fixedly attached to the tip end of the support arm 42 that is horizontally provided so as to be adjustable in the front-rear and vertical directions.

Therefore, the position of the seat portion 44 can be arbitrarily adjusted in the front-back and up-down directions according to the operator's body shape, and since the seat portion 44 is a straddle-type seat portion like a saddle of a bicycle, the front view is reduced. The workability is good, and the work posture is comfortable, so you are less tired, and you can work in the same position while standing and sitting. The invention is not limited to the above-described embodiments, and the invention can be implemented in modes other than the above-described embodiments.

[0022]

[Effect of the device]

 As described above, this invention is a cutting blade in which a lower blade and an upper blade are slidably overlapped with each other, and at least the upper blade of the cutting blade is reciprocated together with a knife head linked to a drive unit. In a mowing device that reciprocates in the longitudinal direction to mow grain culms and the like, in a guide unit that guides the cutting blade along its longitudinal direction, a knife head that fixes the upper blade and a receiving blade that fixes the lower blade. The knife bar slides by restricting the load in the front-back direction of the knife head by the guide part, because it is provided between the table and the knife head that fixes the upper and lower blades and on the drive part side. Since only the load in the directional direction is received, the sliding parts such as the friction plate and the knife bar are prevented from being worn, and the sliding parts always reciprocate smoothly to reduce the load on the cutting blade drive system.

Further, by preventing abrasion of the sliding portion, rattling of the cutting blade in the front-back direction can be prevented, and since the guide portion is on the drive portion side and supports the knife head, Even if the culm cutting part wears, vertical rattling that occurs between the upper and lower cutting blades is regulated to prevent the cutting blade from opening, and to prevent grain cutting etc. The stability of cutting can be improved.

[Brief description of drawings]

FIG. 1 is a partial plan view of a reaping device showing a first embodiment of the present invention.

2 is a cross-sectional view of the knife head portion of FIG.

FIG. 3 is a partial plan view of a reaping device showing a second embodiment of the present invention.

4 is a cross-sectional view of the knife head portion of FIG.

FIG. 5 is a partial plan view of a mowing device showing a third embodiment of the present invention.

6 is a cross-sectional view of the knife head portion of FIG.

FIG. 7 is a sectional view of a portion where a knife clip of the third embodiment is provided.

FIG. 8 is an explanatory diagram illustrating a first conventional example.

FIG. 9 is an explanatory diagram illustrating a second conventional example.

FIG. 10 is a plan view of a mowing device that prevents muddy water and the like from entering the sliding portion of the mowing blade.

FIG. 11 is an explanatory view illustrating the attachment of the cover and the rubber plate of FIG.

12 is a cross-sectional view of the knife clip portion of FIG.

13 is a cross-sectional view of the knife head portion of FIG.

FIG. 14 is an overall perspective view of a combine with a seat attached to the combine.

15 is an explanatory diagram illustrating a seat in the combine in FIG. 14. FIG.

[Explanation of symbols]

 1 Receiving Blade 2 Lower Blade 3 Friction Plate 4 Knife Head 5 Upper Blade 6 Knife Bar 7 Cutting Blade 11 Guide Part

Claims (1)

[Scope of utility model registration request] 1. A cutting blade comprising a lower blade and an upper blade slidably superposed on each other, at least the upper blade of which is reciprocated in a longitudinal direction thereof along with the reciprocating movement of a knife head interlocked with a driving portion. In a mowing device that moves to mow grain culms and the like, a guide unit that guides the mowing blade along its longitudinal direction is provided between a knife head that fixes the upper blade and a receiving blade base that fixes the lower blade, or A reaping device provided between the knife heads for fixing the upper blade and the lower blade and on the drive unit side.