WO2014208879A1 - 농업용 다목적 안전커버 및 그에 사용되는 커터 블레이드 - Google Patents

농업용 다목적 안전커버 및 그에 사용되는 커터 블레이드 Download PDF

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Publication number
WO2014208879A1
WO2014208879A1 PCT/KR2014/003211 KR2014003211W WO2014208879A1 WO 2014208879 A1 WO2014208879 A1 WO 2014208879A1 KR 2014003211 W KR2014003211 W KR 2014003211W WO 2014208879 A1 WO2014208879 A1 WO 2014208879A1
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WO
WIPO (PCT)
Prior art keywords
safety cover
cover
agricultural
blade
horizontal blade
Prior art date
Application number
PCT/KR2014/003211
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English (en)
French (fr)
Korean (ko)
Inventor
박성준
Original Assignee
주식회사 성진텍
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020130072334A external-priority patent/KR101407531B1/ko
Priority claimed from KR1020130080157A external-priority patent/KR101514277B1/ko
Application filed by 주식회사 성진텍 filed Critical 주식회사 성진텍
Priority to CN201480002383.4A priority Critical patent/CN104684377B/zh
Publication of WO2014208879A1 publication Critical patent/WO2014208879A1/ko

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/81—Casings; Housings

Definitions

  • the present invention relates to a multipurpose safety cover for agriculture and a cutter blade used therein, which can promote safety from the rotation of the cutter blade in an agricultural mower or crop harvester and prevent splashing.
  • Herbicides which have long been used as quick and easy herbicides, have contributed to the increase of human food.
  • the widespread use of herbicides has serious side effects such as soil pollution, destruction of surrounding ecosystems, and human absorption of residual pesticides.
  • resistant weeds are encouraging overuse of herbicides, and there are already super weeds that do not die by several times the spread of the past, which poses a threat to agriculture.
  • Chongqing mower is a farming machine that directly removes or cuts weeds between paddy fields and furrows, and is designed to replace humans using basketball.
  • Chongqing herbicides also play a role in promoting crop growth by supplying air to the soil while digging and moving soil along with cutting of weeds, and are increasingly receiving attention as a weeding method that overcomes the dysfunction and limitations of herbicides.
  • Chongqing weeding machines are equipped with sweeping or rotary hoes on the back of tractors that can be used for riding and weaving.
  • a type of cutter mounting type walking type
  • a method of working while pushing and walking a cart equipped with a power unit for driving a blade walking type.
  • walking type a type of cutter that is operated while the user walks
  • the shape of the cutter blade or the shape of the cutting is a key factor that determines the performance of the mower, and a number of improvements have been introduced.
  • the cutter blades for cultivation of medium-sized weeds need to be easily shaped to remove only the weeds fundamentally from the cropland and weeds.
  • the present invention has been made in view of the above point, and an object thereof is to provide a multipurpose safety cover for agriculture having an improved work bench fixing mechanism capable of firmly fixing the work bench.
  • the present invention provides a design that improves the ease of operation for fixing or detaching the worktable.
  • Another object of the present invention is to provide an agricultural cutter blade which is easy to remove even the root of the weeds, while improving the cutting efficiency. To this end, while reducing the cutting resistance when rotating the cutter blade at the time of weeding is to facilitate the discharge of fly ash while minimizing the wear of the cutter blade.
  • Another object of the present invention is to propose a cutter blade that can reduce the buoyancy acts to increase the overall resistance according to the rotation of the cutter blade.
  • Another object of the present invention is to propose a cutter blade that reduces the material use of the cutter blade and improves durability.
  • the agricultural multi-purpose safety cover according to the present invention is formed in a dome shape so as to cover the cutter blade, both ends are provided with a sleigh-shaped traveling wings, the cover body; And a worktable fixing part configured to fix the worktable to the cover body, wherein the worktable fixing part comprises: a base frame fixed to the cover body and having a lower worktable fixing groove; A work cover plate formed to be rotatable and open relative to the base frame and having a work bench fixing groove; And a locking unit having a switching lever that locks or unlocks the work table cover plate with respect to the base frame by rotation.
  • the cover body may have a front end opening portion formed to open the front, and the front end opening line portion may be formed in an asymmetrical shape such that the front one side of the cover body is opened more than the opposite side.
  • the agricultural multi-purpose safety cover further comprises a weed pressing portion coupled to the front of the cover, the weed pressing portion, the guide plate is in a horizontal form to press the weeds when moving forward;
  • the connecting rod may be formed to be adjustable in length with respect to the connecting rod fixing portion.
  • the agricultural multi-purpose safety cover further includes a support plate coupled to the rear of the cover, the center of the support plate may be formed with a fork groove.
  • a plurality of position fixing parts protruding from the bottom of the base frame are formed, and the plurality of position fixing parts may be fastened by bolts through the fastening holes formed in the cover body.
  • a plurality of longitudinal protrusions may be formed on inner surfaces of the lower worktable fixing groove and the book worktable fixing groove to prevent rotation of the worktable.
  • the locking unit As an example related to the present invention, the locking unit, the upper end of the locking pin connected to the switching lever by a fixing pin; And a locking slot formed in the base frame and configured to restrain or release the lower end of the locking pin. And a guide slot formed on the work cover plate and guiding the locking pin.
  • the locking unit may further include a slider having a through hole formed therein so that the locking pin passes and formed to slide along the guide slot.
  • the switching lever, the locking pin, the locking slot, and the guide slot may be formed in a pair of left and right around the work table, respectively.
  • a plurality of reinforcing ribs in a vertical direction may be formed on both side surfaces of the cover body.
  • the cutter blade may be formed in a cross-section '' 'bent to the ground.
  • the mounting hole is provided, the horizontal blade portion extending in the horizontal direction; And a plurality of vertical blades respectively provided at one end portion and the other end portion of the horizontal blade portion and extending downward to be inclined downward with respect to the horizontal blade portion, wherein the vertical spreading angle ⁇ of the vertical blade portion with respect to the horizontal blade portion is It may be formed to achieve 105 ⁇ 125 °.
  • the horizontal blade portion and the plurality of vertical blade portions may be formed integrally by bending a metal plate.
  • a grinding surface may be formed at the front end portions of the plurality of vertical blades in the rotation direction.
  • the plurality of vertical blades may be inclined to form a centripetal alignment angle ⁇ with respect to a tangent of the rotational traces of the plurality of vertical blades.
  • an uneven pattern may be formed on the horizontal blade portion.
  • At least one of the horizontal blade portion and the plurality of vertical blade portions may have a cutout profile formed at a rear end of the rotation direction.
  • At least one of the horizontal blade portion and the plurality of vertical blade portions may further include a carbide tip detachable to a distal end portion in the rotation direction.
  • the present invention also has a mounting hole, the horizontal blade portion extending in the horizontal direction; And a plurality of vertical blades respectively provided at one end portion and the other end portion of the horizontal blade portion, the plurality of vertical blades extending to be inclined downward with respect to the horizontal blade portion, and the plurality of vertical blade portions are formed at a tangent of the rotating traces of the plurality of vertical blade portions.
  • An agricultural cutter blade which is arranged obliquely at a centripetal alignment angle ⁇ of 3 to 15 °, is presented.
  • a grinding surface may be formed on the outer surface of the front end portion of the plurality of vertical blades in the rotational direction.
  • the present invention also has a mounting hole, the horizontal blade portion extending in the horizontal direction; And a plurality of vertical blades respectively provided at one end portion and the other end portion of the horizontal blade portion and extending inclined downward with respect to the horizontal blade portion, wherein the horizontal blade portion is provided with an agricultural cutter blade.
  • the uneven pattern may be formed concentrically.
  • the present invention also has a mounting hole, the horizontal blade portion extending in the horizontal direction; A plurality of vertical blade portions provided at one end portion and the other end portion of the horizontal blade portion and extended to be inclined downward with respect to the horizontal blade portion; And a carbide tip detachably installed at a distal end portion of the plurality of vertical blade portions in a rotational direction.
  • a cutout profile may be formed at a rear end of the plurality of vertical blades in the rotational direction.
  • a plurality of fastening holes may be formed in the plurality of vertical blade parts and the cemented carbide tip, respectively.
  • the worktable fixing portion is composed of the base frame, the workbench cover plate and the locking unit, it is possible to maintain the durability from the harsh working environment while supporting the workbench firmly against the cover body.
  • the agricultural multi-purpose safety cover according to the present invention, a structure including a locking unit having a switching lever, the worktable is easily separated from the cover body through the operation of the switching lever or on the contrary to the cover body quickly Since it can be fixed, convenience and workability are enhanced.
  • the vertical blade bent toward the ground is a form that is easy to remove essentially to the root of the weed, while the vertical spreading angle ( ⁇ ) of the vertical blade relative to the horizontal blade ) 105 to 125 °, the cutting amount (cutting efficiency) relative to the running resistance can be maximized.
  • the plurality of vertical blades are arranged to be inclined at a centripetal alignment angle ( ⁇ ) with respect to the tangent of the rotational traces of the plurality of vertical blades, the resistance of the blade This small but easy to discharge of fly ash and the wear of the cutter blade can be minimized.
  • the cutter blade used in the agricultural multi-purpose safety cover of an example related to the present invention as the unevenness is applied to the horizontal blade, it is possible to reduce the buoyancy which is the force that the horizontal blade is about to float according to the rotation of the cutter blade to reduce the cutting resistance as a whole. It can be effective.
  • the cutout profile is formed at the rear end of the rotational direction of the plurality of vertical blades, thereby reducing the material use of the cutter blades, a plurality of vertical blades Since the carbide tip is detachably installed at the distal end of the rotational direction of the part, the wear resistance and durability can be improved.
  • FIG. 1 is a front perspective view of a multipurpose safety cover 100 for agriculture related to the present invention
  • FIG. 2 is an exploded perspective view showing a state in which the weed pressing part 300 is separated from the multipurpose safety cover 100 for agriculture of FIG. 1.
  • FIG. 3 is a rear perspective view of the multipurpose safety cover 100 for agriculture related to the present invention.
  • Figure 5 is a side view of the multipurpose safety cover 100 for agriculture related to the present invention.
  • Figure 6 is a side cross-sectional view of a multipurpose safety cover 100 for agriculture related to the present invention.
  • FIG. 7 is a plan view of a multipurpose safety cover 100 for agriculture related to the present invention.
  • FIG. 8 is an exploded perspective view of a multipurpose safety cover 100 for agriculture related to the present invention
  • FIG. 9 is a conceptual diagram showing an operating state of the multi-purpose safety cover 100 for agriculture related to the present invention
  • FIG. 10 is a perspective view of the agricultural cutter blade 100 according to the first embodiment of the present invention.
  • FIG. 11 is a cross-sectional view of the cutter blade 100 of FIG. 10.
  • FIG. 12 is a diagram showing the weeding efficiency ⁇ according to the vertical spreading angle ⁇ of the cutter blade 100.
  • FIG. 13 is a plan sectional view of the agricultural cutter blade 200 according to the second embodiment of the present invention.
  • FIG. 14 is a front sectional view of the agricultural cutter blade 300 according to the third embodiment of the present invention.
  • FIG. 15 is a perspective view of an agricultural cutter blade 400 according to a fourth embodiment related to the present invention.
  • 16 is a plan view of the agricultural cutter blade 500 according to the fifth embodiment of the present invention.
  • 17 is an exploded perspective view of the agricultural cutter blade 600 according to the sixth embodiment of the present invention.
  • FIG. 1 is a front perspective view of the multi-purpose safety cover 100 for agriculture related to the present invention
  • Figure 2 is a separate perspective view showing a state in which weed pressing unit 300 in the multi-purpose safety cover 100 for agriculture
  • Figure 3 is a rear perspective view of the multi-purpose safety cover 100 for agriculture related to the present invention
  • Figure 4 is a rear view of the multi-purpose safety cover 100 for agriculture related to the present invention
  • Figure 5 is a multi-purpose safety cover 100 for agriculture related to the present invention ) Is a side view
  • Figure 6 is a side cross-sectional view of the agricultural multi-purpose safety cover 100 associated with the present invention
  • Figure 7 is a plan view of the agricultural multi-purpose safety cover 100 associated with the present invention
  • Figure 8 is for agricultural use associated with the present invention Is an exploded perspective view of the multi-purpose safety cover 100.
  • Agricultural multipurpose safety cover 100 is a device connected to the power unit in the agricultural mower by the work table 600, to ensure safety from the rotating cutter blade 700 that is rotated horizontally with respect to the ground (G) Yet it is configured to prevent weeds (W) or water or soil from scattering during work.
  • the multipurpose safety cover 100 for agriculture may be applied to a form of weeding while the user pushes the power unit on the back while working or mounted on a work vehicle manufactured in a riding or walking type.
  • the agricultural multi-purpose safety cover 100 related to the present invention may be suitable for the weeding weeds with water, but can also be used for various purposes, such as weeding or weeding the fields without water.
  • the multipurpose safety cover 100 associated with the present invention can be used for harvesting grain or feed grass, unlike its name.
  • the multipurpose safety cover 100 disclosed in FIGS. 1 to 8 is largely configured to include a cover main body 200, a weed pressing part 300, a support plate 400, and a worktable fixing part 500.
  • the weed pressing part 300 may be removed and used in use, or alternatively, the support plate 400 may be removed and used. That is, the use mode may be differently selected depending on the length of the weed or harvest object, the presence or absence of water, the inclination or the degree of curvature of the bottom surface, and the like.
  • the cover body 200 has a shape such as a dome to cover the cutter blade 700 that is horizontally rotated with respect to the ground G in the structure surface, and to provide a rotation space of the cutter blade 700. have.
  • the cover body 200 may be configured to have sufficient rigidity and durability as a portion supporting the weed pressing unit 300, the support plate 400, and the worktable fixing unit 500.
  • the cover body 200 may be formed of a resin, such as polyethylene or polycarbonate, and a form in combination with a metal.
  • the cover main body 200 has traveling blades 210 aligned in the direction of the working table 600 at both ends.
  • the running wing unit 210 is capable of supporting the overall weight and maintaining the shape, and is shaped like a sled blade to reduce resistance from water or the bottom surface.
  • the running wing 210 is thicker than other portions of the cover body 200, and forms both edges of the cover body 200.
  • a plurality of reinforcing ribs 211 aligned in up and down directions may be formed at both sides of the cover body 200.
  • the front of the cover body 200 is open, for this purpose, the open end line portion 220 is formed.
  • the tip open line portion 220 is formed in an asymmetrical shape such that the front one side of the cover body 200 is opened more than the opposite side, and is thus inclined to one side. This guides the weeds W to be well aligned in one direction when entering the inside of the cover body 200.
  • a guide wall 221 protruding forward is formed on the side of the bottom of the cover body 200 at the lower end of the tip opening line 200. The guide wall 221 induces the cut grass to fall easily.
  • the tip open line portion 220 is to cut a long grass or crop in a state in which the weed pressing portion 300 is separated, the long grass or crop is naturally asymmetrically to one side by the asymmetrical tip open line portion 220.
  • the long grass or crop cut by the cutter blade 700 ' is easily fell by the guide wall 221 to facilitate the movement of the cover body 200.
  • the weed pressing unit 300 is coupled to the lower end of the front of the cover main body 200.
  • the weed pressing unit 300 is formed to have a guide plate 310, the connecting rod 320 and the connecting rod fixing portion 330.
  • the guide plate 310 allows the weeds to be pressed by the guide plate 310 when the agricultural multipurpose safety cover 100 according to the present invention is advanced. Furthermore, since the guide plate 310 is on the weed W lying down, the cutter blade 700 rotates, thereby relieving the cover body 200 from receiving a force to enter the floor.
  • the guide plate 310 may be formed in a shape toward the front end toward the front end portion so as to reduce the resistance of water or soil as possible.
  • the guide plate 310 may be formed such that the portion close to the driving center axis is the lowest and both edges are high from the ground.
  • the upper or lower surface of the guide plate 310 may be provided with a reinforcing rib 311 to prevent deformation and reinforcement.
  • the connecting rod 320 may be configured to be mounted in a longitudinal direction with respect to the connecting rod fixing part 330, and furthermore, the connecting rod 320 may be configured to be separated from the connecting rod fixing part 330. .
  • the connecting rod 320 may be a metal material to minimize the increase in width.
  • the weed pressing unit 300 may be separated for weeding such as long grass. That is, as shown in FIG. 2, when the fixing pin 340 is separated from the connecting rod 320 of the weed pressing unit by the connecting rod fixing unit 330, the weed pressing unit 300 is separated from the cover body 200.
  • the support plate 400 reduces the force received by the agricultural multipurpose safety cover 100 to dig into the ground while working in paddy fields and the like.
  • the support plate 400 serves as a support point of the lever. Therefore, when the work table 600 is pressed slightly while advancing, the cover body 200 is easily reduced without falling into the ground or water, and effortlessly moved.
  • the support plate 400 is fastened to the cover body 200 by the support plate fastener 420, and may have a shape that is curved upwards toward the rear in the shape surface.
  • the support plate 400 may have a fork groove 410 formed at the center of the support plate 400 so as to prevent the viscous soil from sticking to increase resistance.
  • the worktable fixing part 500 maintains easy mounting, replacement, and durability while allowing the cutter blade 700 and the worktable 600 assembly, which are the parts receiving the most external force or vibration, to be firmly supported by the cover body 200. It may be formed in a form that can be. According to FIG. 7, the worktable fixing part 500 includes a base frame 510, a worktop cover plate 530, a locking unit, and the like as a whole. Hereinafter, these are demonstrated in detail.
  • the base frame 510 is formed such that the worktable 600 formed in the shape of a bag may be a rigid support plate to be fixed in an inclined form with respect to the cover body 200.
  • the cover body 200 is provided with a mounting surface reinforcement 230 is reinforced so that the base frame 510 can be installed, the mounting surface reinforcing portion 230 fastening hole 231 for fixing the base frame 510 Is formed.
  • the lower surface of the base frame 510 may be formed so that the position fixing portion 511 protrudes, and the position fixing portion 511 is the cover body. It is in the form that can be inserted into the fastening hole 231 of (200).
  • a nut shape or bushing for fastening the bolt 520 may be formed at the center of each position fixing part 511. After the base frame 510 is inserted into the fastening hole 231 of the cover body 200, the position fixing part 511 is fixed by the bolt 520 and the washer 521 that enter the lower surface of the cover body 200. Tighten.
  • the base frame 510 is formed with a lower worktable fixing groove 513 for supporting the worktable 600 entered in an inclined form.
  • the lower worktable fixing groove 513 may be formed with a plurality of protrusions 513a in the longitudinal direction to prevent the worktable 600 from being rotated under resistance or impact in a fixed state.
  • a hinge connecting portion 512 is provided at the front of the base frame 510 so that the work table cover plate 530 can be coupled in a hinge form.
  • a locking slot 514 may be formed at the rear of the base frame 510 to lock the hinged work cover plate 530.
  • One side of the locking slot 514 is formed with a relatively large diameter portion for the passage of the locking pin 540.
  • the front of the workbench cover plate 530 has a hinge 531 is formed to be connected to the hinge connecting portion 512 of the base frame 510 of the lower, the rear workbench fixed to cover the upper surface of the workbench 600
  • the groove 532 is formed.
  • the upper worktable fixing groove 532 may also have a protrusion 513a like the lower worktable fixing groove 513.
  • the work table cover plate 530 is rotated upward with respect to the base frame 510 to release the work table 600 or rotates downward to tighten the work table 600.
  • the locking unit includes a switching lever 550 and the like for operation, and has a number of configurations connected to the switching lever 550.
  • the guide cover 533 is formed on the work table cover plate 530 so that the work table 600 can be firmly tightened, and the guide slot 533 is provided with a slider 534 for sliding along it.
  • the slider 534 has a through hole 534a to allow the locking pin 540 to pass therethrough.
  • the lower end of the locking pin 540 is shaped like a head that can be hooked, or as shown in Figure 8, the adjustment screw 541 and the spring 542 is fastened to the bottom. Accordingly, the lower end of the locking pin 540 can be caught by the locking slot 514 of the base frame 510. If the lower end of the locking pin 540 slides backward, the lower part of the locking pin 540 can pass through the large locking slot 514 portion. Thus, the workbench cover plate 530 is opened with respect to the base frame 510. The upper end of the locking pin 540 is connected by a fixing pin 551 of the switching lever 550.
  • the switching lever 550 is connected to the fixing pin 551, but the outer circumferential surface is formed in an oval shape, thereby strongly pulling the locking pin 540 hanging on the locking slot 514 by the rotation of the switching lever 550.
  • the working table 600 between the plate 530 and the base frame 510 is firmly supported.
  • the adjustment screw 541 is to adjust the separation distance with the locking pin 540, the spring 542 is a fixed state of the work table 600 tightened by the switching lever 550 in a working environment in which vibration is continuously generated Is maintained.
  • the detailed configuration and action of the worktable fixing part 500 can easily separate the worktable 600 with respect to the cover body 200 through the operation of the switching lever 550 or on the contrary quickly cover the worktable 600. Since it can be fixed with respect to the 200, convenience and workability is enhanced.
  • the switching lever 550 may be formed in a pair of left and right around the work table 600 to prevent the work table 600 from being rotated and to prevent the bias of the work.
  • FIG. 9 is a conceptual diagram showing an operating state of the multi-purpose safety cover 100 for agriculture related to the present invention.
  • the cutter blade 700 illustrates a 'c' shaped blade bent in the ground direction.
  • Agricultural multipurpose safety cover 100 proceeds through the furrow to remove the rice weed (W) with water is moved forward while pressing the weeds (W) by the weed pressing portion 300 on the tip.
  • the support plate 400 helps the cover body 200 to be moved between the water surface H or the ground G with proper resistance.
  • the rotating cutter blade 700 cuts and grinds the stem portion and the root R of the bent weeds at once. Therefore, the cutter blade 700 removes not only the stem but also the roots R in the removal of the weeds W in a fundamental manner, and it is necessary to separately collect the weeds W after weeding because the weeds W are crushed. There is no.
  • the multipurpose safety cover 100 for agriculture related to the present invention can be applied to a flat blade or a blade.
  • the agricultural cutter blade 800 related to the present invention is a form that is provided with a horizontal blade portion 810 and a vertical blade portion 820 as a whole.
  • the horizontal blade portion 810 extends in the horizontal direction
  • the mounting hole 811 is formed in the middle so that it can be inserted into the rotating rotor.
  • the vertical blade portion 820 is provided at one end and the other end of the horizontal blade portion 810, respectively, and has a form extending to be inclined downward with respect to the horizontal blade portion 810.
  • the horizontal blade portion 810 and the vertical blade portion 820 may be integrally formed by bending a metal plate such as steel.
  • the vertical blade portion 820 is formed to have a constant vertical spreading angle ⁇ with respect to the horizontal blade portion 810. This vertical spreading angle ⁇ is determined through the relationship between the running resistance and the cutting amount, as will be described later in the range of 105 to 125 degrees.
  • the rotating cutter blade 800 cuts and grinds the stems and roots of the bent weeds at once. Therefore, the cutter blade 800 removes the roots R as well as the stems in the removal of the weeds W, and it is necessary to separately collect the weeds W after weeding, since the weeds W are crushed. There is no.
  • FIG. 12 is a chart showing the weeding efficiency ⁇ according to the vertical spreading angle ⁇ of the cutter blade 800.
  • the weeding efficiency ⁇ according to the vertical spreading angle ⁇ of the cutter blade 800 may be defined as a cutting amount C such as weeds to the running resistance D.
  • FIG. This herbicidal efficiency ⁇ appears at a vertical spreading angle ⁇ greater than 90 degrees. That is, as shown by the hatched portion of Figure 12, it can be seen that the herbicidal efficiency ( ⁇ ) is relatively high in the 105 ⁇ 125 ° range. On the other hand, when the vertical opening angle ( ⁇ ) is 90 °, it was 50% or less than the maximum efficiency in the 105 ⁇ 125 ° range.
  • FIG. 13 is a plan sectional view of the agricultural cutter blade 900 according to the second embodiment of the present invention.
  • the plurality of vertical blade portions 920 constituting the cutter blade 900 are arranged to be inclined to form a centripetal alignment angle ⁇ with respect to the tangent of the rotational traces of the plurality of vertical blade portions 920.
  • This centripetal alignment angle ( ⁇ ) is the most excellent cutting resistance in the range of 3 ⁇ 15 °, this time is less resistance of the blade, easy to discharge the fly-by and relatively small wear of the blade.
  • the grinding surface 921 is formed in the outer side surface of the front-end
  • the mounting hole 1011 is provided with a horizontal blade portion 1010 extending in the horizontal direction and a plurality of vertical blade portions 1020 extending to be inclined downward with respect to the horizontal blade portion 1010. Included.
  • the uneven pattern 1012 is formed on the horizontal blade portion 1010. The uneven pattern 1012 may be formed concentrically, thereby reducing the generation of buoyancy in the process of rotating the cutter blade 1000, and consequently contribute to the improvement of cutting efficiency.
  • the uneven pattern 1012 may be formed by embossing or roller processing the horizontal blade portion 1010 that is a plate material.
  • 15 is a perspective view of the agricultural cutter blade 1100 according to the fourth embodiment related to the present invention.
  • the grinding surface 1121 is provided at the front end of the plurality of vertical blades 1120 in the rotational direction, and the cutout profile 1125 is formed at the rear end of the rotational direction.
  • the cutout profile 1125 is cut out in consideration of the direction of the maintenance and wear of the remaining portion except the grinding surface 1121 which is directly related to the cutting. Therefore, it contributes to the saving of material, and hence the manufacturing cost can be reduced.
  • the cutting surface 1213 is provided at the front end of the horizontal blade portion 1210 in the rotational direction, and the cutout profile 1215 is formed at the rear end of the horizontal blade 1210. That is, the cutout profile 1215 may be formed on the horizontal blade portion 1210 in addition to the vertical blade portion, in this case, it is possible to maximize the savings of the material.
  • FIG 17 is an exploded perspective view of the agricultural cutter blade 1300 according to the sixth embodiment related to the present invention.
  • the carbide tip 1330 is attached to the distal end portion of the vertical blade portion 1320.
  • Carbide tip (1330) is applied to the wear-resistant steel, it minimizes the wear of the material that will be generated while hitting the soil or gravel.
  • the cemented carbide tip 1330 may reduce the use of other materials by applying the cutout profile 1325, and may also semi-permanently exchange the cutter blade 1300.
  • the cemented carbide tip 1330 may be attached to the vertical blade portion 1320 in a detachable form, and for detachment, the coupling blades 1327 and 1332 may be formed in the vertical blade portion 1320 and the cemented carbide tip 1330, respectively. have.
  • the agricultural general purpose safety cover described above and the cutter blade used therein are not limited to the configuration and method of the described embodiments.
  • the above embodiments may be configured by selectively combining all or some of the embodiments so that various modifications can be made.

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PCT/KR2014/003211 2013-06-24 2014-04-14 농업용 다목적 안전커버 및 그에 사용되는 커터 블레이드 WO2014208879A1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201480002383.4A CN104684377B (zh) 2013-06-24 2014-04-14 农业用多用途安全罩及用于此的切割机刀片

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2013-0072334 2013-06-24
KR1020130072334A KR101407531B1 (ko) 2013-06-24 2013-06-24 농업용 다목적 안전커버
KR1020130080157A KR101514277B1 (ko) 2013-07-09 2013-07-09 농업용 커터 블레이드
KR10-2013-0080157 2013-07-09

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WO2014208879A1 true WO2014208879A1 (ko) 2014-12-31

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KR101892193B1 (ko) * 2016-12-05 2018-08-28 주식회사 성진텍 다조식 제초기
CN110558030B (zh) * 2019-10-25 2024-06-21 浙江荣亚工贸有限公司 一种除草机
CN115868331B (zh) * 2022-10-24 2024-08-06 东北林业大学 一种带自动复位安全罩的灌木平茬机

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US6301868B1 (en) * 1999-08-26 2001-10-16 James D. Siplinger Vortex reducing mower blade
US20080196378A1 (en) * 2007-02-15 2008-08-21 Wayne Arthur Smith Rotary lawn mower cutting blade
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