JP2014230501A - Ridging device of tilling and ridging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems in which: in a tiller (for example, small cultivator), soil surface tilled by a tilling tine rotor is ridged and nursed by a wing hiller (ridger); if a special wing hiller is attached, the tiller is increased in size and weight, and output house power is further required so that workability and operability are likely to be deteriorated; and mounting operation of the wing hiller becomes complex to take trouble.SOLUTION: A tiller is provided with a rear cover 6 including a scraping and leveling plate 7 at a rear end edge installed rotatably at a rear lower end edge part of a rotor cover 2 covering an upper peripheral part of a tilling tine rotor 1. An insertion hole 13 through which a bracket is inserted in a grooving nursery soil plate 3 is formed. When the rear cover 6 is rotated upward to be a standing state, the insertion hole 13 is fitted to a bracket part 14 at the upper part of the rotor cover 2 to be capable of holding the standing posture.

Description

  The present invention relates to a tiller device for a tiller in which a rear cover capable of standing soil cultivation is provided at the rear of a tiller claw rotor cover of a relatively small and light two-wheeled tiller such as a hand tractor.

  At the rear edge of the rotor cover that covers the upper side of the tilling claw rotor, a culture plate in the middle of the tilling width direction and a rear cover that surrounds and forms both the left and right sides are mounted in a vertically superposed manner to perform the soil cultivation work. In some cases, there is known a mode in which only the rear cover is erected upward and left in the working mode while leaving the cultivating plate downward (see, for example, Patent Document 1).

JP 2012-115190 A. JP 2012-105622 A.

  In a small lightweight form of cultivator (for example, a hand cultivator, a hand cultivator, etc.) having a single-shaft two-wheel and having a cultivating claw rotor and an operation handle arranged at the rear of a traveling tractor, In order to cultivate the soil surface cultivated by this tillage claw rotor with a cultivator (concentrator), if a special cultivator is installed, the configuration will be increased in size and weight, and the output horsepower As a result, the workability and operability are likely to be lowered. Moreover, the change-over operation of the earthenware device becomes complicated and requires a lot of work.

  According to the first aspect of the present invention, an inverted trapezoidal groove cut in front view is located at the rear lower end edge of the rotor cover 2 that covers the upper peripheral portion of the tilling claw rotor 1 and is located at the substantially central portion in the width direction of the rotor cover 2. A substantially rectangular rear cover 6 comprising a culture plate 3 and a slope pressing plate 5 that can be rotated rearward with respect to the left and right culture-side plate edges 4 of the groove-cut culture plate 3 is provided so as to be vertically rotatable. In a cultivator provided with a scraping leveling plate 7 at the rear end edge of the rear cover 6, an insertion hole 13 through which a bracket can be inserted is formed in the grooving earth plate 3, and downward through a rod hole 11 at the rear part of the rotor cover 2. A protruding resistance rod 12 is provided, and when the rear cover 6 is erected upward, the insertion hole 13 of the grooved earth plate 3 is fitted into the bracket portion 14 above the rotor cover 2 and held in an upright position. A tiller device for a field cultivator characterized by being configured Configuration to.

  Since the rear cover 6 can be turned up and down at the rear part of the rotor cover 2, the rear cover 6 is moved down to prevent rearward scattering of the cultivated soil due to the rotation of the cultivating claw rotor 1. Can be leveled. Then, a flat leveling soil surface can be formed by attaching a scraping leveling plate 7 to the lower end edge portion and performing a leveling action. In addition, when performing the vertical soil grooving or grooving cultivating work on the cultivated soil surface, the slope pressing plates 5 on both the left and right sides of the grooving soil cultivating plate 3 are appropriately moved to the rear side in the downward movement posture of the rear cover 6. Rotating to an angular position, grooving soil is applied to the center of the cultivated soil surface, and the slope pressing plate 5 is slid and pressed along the right and left slopes of the grooving soil, Press (press down) with pressure to tighten and stabilize.

  Moreover, when raising the residual tillage soil part of the center part of the cultivation soil surface with a resistance rod, the resistance rod 12 is inserted from the rod hole 11 of the rotor cover 2, and the lower end portion of the resistance rod 12 is It is located directly below the tillage shaft transmission case located in the middle of the tillage width of the tillage claw rotor 1, and the remaining tillable soil portion remaining on the transmission case passing portion mark is raised and the soil can be crushed loosely. it can.

  Further, in the working mode in which the rear cover 6 and the erecting device formed from the rear cover 6 are not used, the rear cover 6 and the erecting device are erected upward and maintained in the storage posture. At this time, the insertion hole 13 formed in the grooving earth plate 3 of the rear cover 6 is fitted to the bracket portion 14 which is formed on the upper portion of the rotor cover 2 and appropriately formed, and is held in the standing and storing posture.

  According to a second aspect of the present invention, a wheel arm 15 configured to protrude rearward from a resistance rod 12 positioned on the front side of the rear cover 2 is provided on the rear side through the insertion hole 13 of the grooved earth plate 3 of the rear cover 2. A tail wheel 16 is provided to support the ground on the bottom surface of the soil groove at the rear end of the wheel arm 15.

  As described above, the resistance rod 12 is inserted through the rod hole 11 of the rotor cover 2 into the soil cultivating portion at the front lower portion of the rear cover 6, and the remaining cultivated soil of the uncultivated soil cultivating portion at the lower end portion. Come over the soil, crush and soften.

  Then, when grooving soil on this cultivated soil surface, the slope pressing plate 5 of the rear cover 6 is rotated to the rear side so that the soil can be cultivated. When the tail wheel 16 is grounded on the bottom surface of the soil groove, the wheel arm 15 projecting rearward from the resistance rod 12 is inserted into the insertion hole 13 of the slope pressing plate 5 in a suspended form from the rear end of the rotor cover 2. The tail wheel 16 at the rear end of the wheel arm 15 is supported on the bottom surface of the soil groove of the standing soil. In this way, the bottom surface of the groove of the rear cover 6 by the vertical stand is supported by the tail wheel 16 of the wheel arm 15, and the resistance action by the resistance rod 12 of the tilled soil cultivator before cultivation by the vertical stand is reduced. In addition, the operation can be made stable and easy to operate.

  In addition, when attaching the tail wheel 16, in a form that does not require the resistance rod 12, as a form in which the resistor at the lower end of the resistance rod 12 is removed, a wheel arm 15 having the tail wheel 16 is attached, It is also possible to adopt a form in which the soil cultivation work is performed.

  According to a third aspect of the present invention, the bracket 14 part that protrudes rearward from the insertion hole 13 is configured to turn upright and to insert the insertion hole 13 of the rear cover 6 into the bracket 14 at the top of the rotor cover 2. Next, the arm socket 17 of the wheel arm 15 is fitted and attached.

  At the base end portion of the wheel arm 15, there is an arm socket 17 that can be inserted and attached to a bracket 14 located at the top of the rotor cover 2, but is stored in the upper portion of the rotor cover 2 without using the tail wheel 16. When the insertion hole 13 of the rear cover 6 is fitted to the upper bracket 14 of the rotor cover 2, the arm socket 17 of the wheel arm 15 is removed from the rear side of the rear cover 6. The rotor cover 2 is fitted and attached to the bracket 14 at the upper part.

  In addition, when the rear cover 6 is set to an action posture for leveling the cultivated soil surface and only the tail wheel 16 is held in the stowed posture, the rear cover 6 is moved downward and only the arm socket 17 of the wheel arm 15 is moved. The bracket 14 is fitted and held.

  According to the first aspect of the present invention, as described above, the rear cover 6 is rotated up and down around the rear lower end edge of the rotor cover 2 so as to scrape the cultivated soil surface. When the rear cover 6 is in a stowed posture, or when the rear cover 6 is not used for work, the rear cover 6 can be turned upright to be switched to the stowed posture. Can fit the insertion hole 13 portion of the groove-cutting earth plate 3 to the bracket portion 14 located on the upper side portion of the rotor cover 2 to hold the storage posture position. Since the rear cover 6 or an upright composed of the rear cover 6 is attached, the rear cover 6 can be switched and held in the storage position, so that the configuration and the operation thereof are remarkably simple and easy.

  According to the second aspect of the present invention, when the configuration of the rear cover 6 itself is switched as an erecting device, the wheel arm 15 is protruded rearward from the resistance bar 12 located on the front side of the grooving earth plate 3. In order to support the tail wheel 16 by projecting to the lower rear side through the insertion hole 13 of the groove-cutting earth plate 3, the grounding position of the tail wheel 16 with respect to the bottom surface of the earth-growing groove is close to the rear side position of the groove-cutting earth plate 3. The tail wheel 16 support mechanism can be easily reduced in weight, easily balanced in the front-rear weight, and the operability can be improved.

  According to the third aspect of the present invention, when the rear cover 6, the tail wheel 16 and the like are stored and held in an unused state as described above, the insertion hole 13 of the grooved earth plate 3 or the arm socket of the wheel arm 15 is used. 17 and the like are fitted and held in the bracket 14 at the upper part of the rotor cover 2, so that the configuration can be easily and easily switched between the use posture and the storage posture, and the weight can be reduced.

A side view of a field cultivator. The enlarged side view of the rear cover part. Planar layout of a field cultivator. The top view which shows the attachment state of a scraping flat plate. The side view of the cultivator at the time of tillage, and the rear view of the rear cover part. The side view of the cultivator at the time of standing work, and the rear view of the rear cover part. The side view of a field cultivator at the time of driving | running | working movement, and the rear view of the rear cover part. The perspective view at the time of attaching a resistance rod and a tail wheel. The perspective view in the case of using it using a rear cover as a stand. The perspective view in the case of attaching a leveling plate to a rear cover and leveling.

  Based on the drawings, a pair of left and right wheels 18 are provided on a single-shaft axle 19, and a rear side of a hand tractor vehicle body 21 having a bifurcated or loop-like handle 20 is disposed on the rear side of the axle 19. A tilling transmission case 23 is provided from the center position of the transmission case 22 located on the upper side of the transmission case 22 toward the lower rear side, and a horizontal tilling shaft 24 is disposed at the lower end of the transmission case 23, and this tilling shaft is arranged. The tilling claw 25 is arranged around the 24 to constitute the tilling claw rotor 1, and the soil surface is tilled to an appropriate depth, and operations such as middle tillage weeding can be performed. An engine 27 is mounted on the front side of the transmission case 22 via a front bracket 26. From the engine shaft 28, the input shaft 29 of the mission case 22 is connected to a belt in a transmission case 30 and a tension clutch. It can be transmitted by the transmission mechanism. 31 is a fuel tank refueling cap, 32 is a transmission lever, 33 is a side clutch lever, and 34 is a clutch lever.

  The center drive type tilling claw rotor 1 that is rotationally driven on both the left and right sides of the tillage transmission case 23 is configured to cover the upper peripheral portion with a rotor cover 2 having a semicircular arc shape when viewed from the side. Side covers 35 are formed on the left and right sides of the rotor cover 2. A rear cover 6 is formed at the rear end of the rotor cover 2.

  The rear cover 6 is composed of a grooving culture plate 3 located at a substantially central part of the width of the rotor cover 2 and slope pressing plates 5 on both the left and right sides of the grooving culture plate 3, and has a substantially rectangular shape. The bottom edge is formed in a single plate shape, and the lower edge is slid onto the cultivated soil cultivated by the cultivating claw rotor 2, thereby preventing rearward scattering of the cultivated soil and reducing the level of the soil. The rear cover 6 is configured. Further, a scraping flat plate (an appropriately shaped rake plate) is attached along the rear edge of the rear cover 6 and used as a flat plate for leveling the cultivated soil surface by flattening. it can. Further, by turning the slope pressing plate 5 of the rear cover 6 to the rear side, a groove cutting cultivator for forming a cultivating groove on the soil surface cultivated by the tilling claw rotor 1 or left and right of the cultivating groove It can be used as a stand-up cultivator that forms a cultivating soil outside

  Here, at the rear lower end edge of the rotor cover 2 covering the upper peripheral portion of the tilling claw rotor 1, a groove-cutting earth plate 3 having a reverse trapezoidal shape in a front view located at a substantially central portion in the width direction of the rotor cover 2, A rear cover 6 having a substantially rectangular shape, which is composed of a slope pressing plate 5 that can be rotated rearward with respect to the left and right culture side plate edges 4 of the grooving culture plate 3, is provided so as to be capable of rotating up and down, and the rear end of the rear cover 6. In the cultivator provided with the scraping leveling plate 7 on the edge, an insertion hole 13 through which the bracket can be inserted is formed in the grooving soil plate 3, and the resistance rod 12 protruding downward through the rod hole 11 at the rear portion of the rotor cover 2 is provided. A tiller configured to be able to be held in an upright position by fitting the insertion hole 13 of the grooving earth plate 3 into the bracket portion 14 above the rotor cover 2 in the upward rotation of the rear cover 6 in the upward direction. It is set as the structure of an upright apparatus.

  Since the rear cover 6 can be turned up and down at the rear part of the rotor cover 2, the rear cover 6 is moved down to prevent rearward scattering of the cultivated soil due to the rotation of the cultivating claw rotor 1. Can be leveled. Then, a flat leveling soil surface can be formed by attaching a scraping leveling plate 7 to the lower end edge portion and performing a leveling action. In addition, when performing the vertical soil grooving or grooving cultivating work on the cultivated soil surface, the slope pressing plates 5 on both the left and right sides of the grooving soil cultivating plate 3 are appropriately moved to the rear side in the downward movement posture of the rear cover 6. Rotating to an angular position, grooving soil is applied to the center of the cultivated soil surface, and the slope pressing plate 5 is slid and pressed along the right and left slopes of the grooving soil, Press (press down) with pressure to tighten and stabilize.

  Moreover, when raising the residual tillage soil part of the center part of the cultivation soil surface with a resistance rod, the resistance rod 12 is inserted from the rod hole 11 of the rotor cover 2, and the lower end portion of the resistance rod 12 is It is located directly below the tillage shaft transmission case located in the middle of the tillage width of the tillage claw rotor 1, and the remaining tillable soil portion remaining on the transmission case passing portion mark is raised and the soil can be crushed loosely. it can.

  Further, in the working mode in which the rear cover 6 and the erecting device formed from the rear cover 6 are not used, the rear cover 6 and the erecting device are erected upward and maintained in the storage posture. At this time, the insertion hole 13 formed in the grooving earth plate 3 of the rear cover 6 is fitted to the bracket portion 14 which is formed on the upper portion of the rotor cover 2 and appropriately formed, and is held in the standing and storing posture.

  Further, a wheel arm 15 configured to protrude rearward from the resistance rod 12 positioned on the front side of the rear cover 2 is protruded rearward through the insertion hole 13 of the grooved earth plate 3 of the rear cover 2, and this foil is provided. A tail wheel 16 that supports the ground is provided on the bottom surface of the soil groove at the rear end of the arm 15.

  As described above, the resistance rod 12 is inserted through the rod hole 11 of the rotor cover 2 into the soil cultivating portion at the front lower portion of the rear cover 6, and the remaining cultivated soil of the uncultivated soil cultivating portion at the lower end portion. Come over the soil, crush and soften.

  Then, when grooving soil on this cultivated soil surface, the slope pressing plate 5 of the rear cover 6 is rotated to the rear side so that the soil can be cultivated. When the tail wheel 16 is grounded on the bottom surface of the soil groove, the wheel arm 15 projecting rearward from the resistance rod 12 is inserted into the insertion hole 13 of the slope pressing plate 5 in a suspended form from the rear end of the rotor cover 2. The tail wheel 16 at the rear end of the wheel arm 15 is supported on the bottom surface of the soil groove of the standing soil. In this way, the bottom surface of the groove of the rear cover 6 by the vertical stand is supported by the tail wheel 16 of the wheel arm 15, and the resistance action by the resistance rod 12 of the tilled soil cultivator before cultivation by the vertical stand is reduced. In addition, the operation can be made stable and easy to operate.

  In addition, when attaching the tail wheel 16, in a form that does not require the resistance rod 12, as a form in which the resistor at the lower end of the resistance rod 12 is removed, a wheel arm 15 having the tail wheel 16 is attached, It is also possible to adopt a form in which the soil cultivation work is performed.

  Further, the wheel arm 15 is pivoted upright or the insertion hole 13 of the rear cover 6 is inserted into the bracket 14 at the top of the rotor cover 2, and the bracket arm 14 protrudes rearward from the insertion hole 13. The arm socket 17 is fitted and attached.

  At the base end portion of the wheel arm 15, there is an arm socket 17 that can be inserted and attached to a bracket 14 located at the top of the rotor cover 2, but is stored in the upper portion of the rotor cover 2 without using the tail wheel 16. When the insertion hole 13 of the rear cover 6 is fitted to the upper bracket 14 of the rotor cover 2, the arm socket 17 of the wheel arm 15 is removed from the rear side of the rear cover 6. The rotor cover 2 is fitted and attached to the bracket 14 at the upper part.

  In addition, when the rear cover 6 is set to an action posture for leveling the cultivated soil surface and only the tail wheel 16 is held in the stowed posture, the rear cover 6 is moved downward and only the arm socket 17 of the wheel arm 15 is moved. The bracket 14 is fitted and held.

  Further, in the embodiment of the drawings, a reverse trapezoidal shape when viewed from the front is located at the rear lower end edge of the rotor cover 2 that covers the upper peripheral portion of the tilling claw rotor 1 and is located at a substantially central portion in the width direction of the rotor cover 2. A substantially rectangular rear cover 6 composed of a groove cutting plate 3 and a slope pressing plate 5 that can be rotated rearward with respect to the left and right soil side plate edges 4 of the groove cutting plate 3 can be turned up and down. And a scraping leveling plate 7 is provided at the rear end edge of the rear cover 6.

  When the soil surface cultivated by the rotation of the tillage claw rotor 1 is scraped, the rear cover 6 is rotated downward with the scraper leveling plate 7 at the rear end of the rear cover 6 attached, and the tilled soil Scratch the surface to a uniform posture. The soil surface is cultivated by the rotation of the cultivating claw rotor 1 by the traveling of the cultivator. The cultivated soil surface is leveled by a scraping leveling plate 7 of the rear cover 6 provided at the rear lower edge of the rotor cover 2. The cultivated soil scattered by the cultivating claw rotor 1 is received by the upper rotor cover 2 and the rear cover 6 on the rear side, and is settled and guided within the cultivating width to form a flat cultivated form. Even if there is an uneven surface or a lump on the soil surface, it is leveled to a substantially flat surface by the scraping leveling plate 7 at the rear edge of the rear cover 6.

  Further, when grooving soil or tillage cultivating soil is carried out on the soil surface cultivated by the tilling claw rotor 1, the right and left side slopes of the rear cover 6 with respect to the grooving cultivating plate 3 at the center portion thereof. The pressing plate 5 is rotated by an appropriate angle to the rear side around the culture side plate edge 4 portion to obtain a culture posture. The tilled soil surface cultivated by the rotation of the tillage claw rotor 1 has an inverted trapezoidal shape grooving groove formed by the grooving cultivating soil plate 3, and the slope portion soil of the groove of the cultivating grooving portion is left and right side The slope pressing plate 5 is slid and pressed to the left and right sides to cultivate the soil. Such a sloped surface of grooving and cultivating is pressed and slid by the slope pressing plate 5 and compacted to a smooth surface, and formed into a clean grooving cultivated surface in a compacted form.

  The scraper leveling plate 7 is detachably attached to the rear edge of the rear cover 6 to level the flat cultivated soil surface, and when cultivating soil, the scraper leveler 7 is removed and the slope pressing plate 5 is removed. It is set as the structure which carries out sliding pressing of the cultivation soil slope.

  The rear cover 6 includes a grooving earth plate 3 positioned at a substantially central portion in the lateral width direction and slope pressing plates 5 on both the left and right sides, and is configured in a substantially square plate shape. In the case of scraping and leveling the cultivated soil surface cultivated by the above, the scraper leveling plate 7 is attached to the rear lower end edge of the rear cover 6 so that the cultivated soil surface guided by the rotor cover 2 and the rear cover 6 is scraped. The leveling plate 7 can be scraped and leveled in a substantially flat shape, and a large uneven surface change can be reduced. Further, even if there is a large earth clot, it is crushed by the scraping leveling plate 7, and the leveling is easily performed.

  In addition, when the tilled soil surface is cultivated, if the scraping leveling plate 7 is not attached to the rear lower end edge of the rear cover 6 or if there is a scraping leveling plate 7 already attached, this scraping leveling plate is used. 7 is removed from the rear lower edge of the rear cover 6, the outer slope pressing plate 5 is rotated to an appropriate angular position rearward with respect to the left and right soil-side plate edges 4 of the grooving soil plate 3. As a stand-up form, this grooving culture board 3 can be fixed in a suspended state, and the depth position of the cultivated soil can be appropriately promoted to perform the grooving culturing action. Then, a grooving groove in the form of a grooving cultivating plate 3 is formed in the central portion of the tilling width, and the groove slopes on both the left and right sides of the cultivating groove are pressed and formed by sliding of the slope pressing plate 5.

  In this way, the rear cover 6 has a square plate shape by rotating the right and left slope pressing plates 5 rearward around the culture side plate edge 4 with respect to the grooved culture plate 3 at the center. It is possible to switch from the rear cover 6 to the cultivating pot type. Further, the rear cover 6 in the form of a square plate is used in a state of being used so as to rotate up and down with respect to the rear lower end edge portion of the rotor cover 2 to form a flat tillage soil surface, and this flat tillage soil. The surface can be switched to a non-flat storage state. Further, the grooving cultivating plate 3 in the form of a cultivating soil storage device in which the direction pressing plate 5 is rotated rearward is also turned up and down with respect to the rear end edge portion of the rotor cover 2 so as to be non-grooved. It can be switched to the cut soil state.

  The scraping leveling plate 7 is attached to the rear edge of the rear cover 6 and the flat cultivated soil surface is scraped and leveled. As described above, the rear lower edge of the rear cover 6 acts so as to press and level the soil surface of the tillage. Since the slope pressing plates 5 on the left and right sides are formed across the width portion from the width portion of the cut soil plate 3, the slope is uniformly scraped across the entire width of the lower end edge of the rear cover 6. It prevents the release by the upward rotation of the pressing plate part 5 part, and effectively maintains the scraping leveling action of the cultivated soil surface.

  Further, the scraping leveling plate 7 is attached to and detached from the rear lower edge of the rear cover 6 and is attached only when leveling the cultivated soil surface. The bottom edge of the plate 3 and the slope pressing plate 5 is slidably contacted with the tilled soil surface to prevent the tilled soil from scattering or leveling. Further, when the slope pressing plate 5 is rotated rearward with respect to the left and right cultivating plate edges 4 of the grooving cultivating plate 3, it is formed by the grooving cultivating plate 3 when the vertical culturing action is performed. The soil groove slopes on the left and right side surfaces of the vertical soil groove portion of the cultivated soil surface are slidably pressed by the slope pressing plate 5 to form a soil groove slope surface that does not easily collapse.

  Further, a hinge plate 9 is provided around the pressing plate hinge 8 along the right and left soil-side plate edges 4 of the groove-cutting soil plate 3, and a hinge plate 9 is provided on the hinge plate 9 such as a rubber plate or a synthetic resin plate. A slope pressing plate 5 made of an elastic plate is attached in an expanded form as a rear cover 6, and the outer edge 10 of the left and right slope pressing plate 5 is configured so as to be able to be expanded and set to a substantially lateral width region position of the rotor cover 2. .

  As described above, the rear cover 6 in the form of a single plate has the pressing plate hinges 8 along the left and right cultivating side plate edges 4 of the grooving cultivating plate 3 and is pivoted rearward around the pressing plate hinge 8. Since the slope pressing plate 5 made of an elastic plate such as a rubber plate attached to the hinge plate 9 is rotatably attached via the hinge plate 9 that is possible, the slope pressing plate 5 is provided with an elastic plate. It is maintained and maintained in a stable support mounting form, and the pressure reduction pressure on the soil groove groove surface by this slope pressing plate 5 can be increased, and it is pressed against the smooth surface to form a clean and stable groove groove slope. can do. In any slope pressing rotation position of the slope pressing plate 5, the elastic strain of the slope pressing plate 5 is limited to improve and maintain uniform pressing uniformity over the entire slope pressing plate 5. be able to. Further, the slope pressing plate 5 in the form of the elastic plate can be extended and rotated outward in the left and right directions to form a single plate-like rear cover 6. The hinge plate 9 can be rotated with respect to the grooving culture plate 3. Is configured so that the rear cover 6 and the slope pressing plate 5 can be switched. Therefore, the switching of the slope pressing plate 5 can be performed smoothly and easily, and the leveling of the cultivated soil and the suppression of the soil slope can be suppressed. Maintain stable sex.

Further, the scraping leveling plate 7 removed from the rear end edge of the rear cover 6 is configured to be stored by being held on the upper surface of the rotor cover 2.
A scraping leveling plate 7 is attached to the rear edge of the rear cover 6 and the scraping leveling plate 7 is slid on the cultivated soil surface so that the cultivated soil surface can be scraped into a flat surface. Further, when the scraping leveling plate 7 is not used, the scraping leveling plate 7 removed from the rear edge of the rear cover 6 is held on the upper surface of the rotor cover 2 so as to be stored. The scraping and leveling plate 7 is formed to have approximately the same width as the lateral width direction of the rotor cover 2 so as to scrape the cultivated soil surface. Even if it is stored and held along, it is difficult to become an overload of work because it is light and lightweight as a compact form that does not disturb other mechanisms.

  Further, the grooving earth plate 3 of the rear cover 6 is formed in the center portion in the lateral width direction, and the upper end edge or the attachment edge attached to the rotor cover 2 is elongated, and the rear end edge or the lower end edge is provided for this. It is formed in a plate shape having a reverse trapezoidal shape when viewed from the front, and this upper edge is pivotable around a hinge pin 37 of the hinge 36 in the vertical direction using a hinge 36. It is connected. The groove cutting medium plate 3 is welded with a reinforcing member 38 having an appropriate shape on the upper surface, the thickness of the groove cutting medium plate 3 is reduced, the weight is reduced, distortion deformation at the time of the groove cutting medium operation is reduced, and stable. It is formed to allow the grooving soil action to be performed.

  A slope pressing plate 5 is connected by a hinge 39 to the culture side plate edges 4 on both the left and right sides of the groove-cutting soil plate 3, and can be rotated around the pressing plate hinge 8 of the hinge 38 in the front-rear direction. It is configured to be able to rotate from the position in the plate surface direction to the rear side as appropriate over a rotation angle position. The slope pressing earth plate 5 can be in the form of a rigid plate. However, in the form in which this is constituted by an elastic plate such as a rubber plate or a synthetic resin plate, along the connecting edge portion attached and connected by the hinge 39. Then, a long hinge plate 9 is provided, and the hinge plate 9 to which the slope cultivating plate 5 is attached is attached to the grooving culture plate 3 through a hinge 39, and the slope pressing force by the elastic plate or th It works to maintain pressure evenly and effectively. Further, the slope surface slab 5 has an inner edge formed in parallel with the soil side plate edge 4 of the grooving soil plate 3, but the outer edge 10 is the same as the lateral edge of the rotor cover 2. In the width position, it forms in the front-back direction straight edge form. The slope pressing earth plate 5 is detachably attached to the hinge plate 9 with attachment bolts 40 and is configured to be easily exchanged.

  As described above, the rear cover 6 is configured in the form of a horizontal rectangular plate by the grooved earth plate 3 at the center and the slope pressing plates 5 on the left and right sides. The edge and the rear end edge of the slope pressing plate 5 are formed in a straight line in the horizontal direction, and a scraping leveling plate 7 that is elongated in the horizontal direction is attached along the rear end edge of the rear cover 6. The bolts 41 and the part of the mounting bolts 40 are shared and attached in a detachable manner. This scraping and leveling plate 7 can be in the form of an elongated straight plate, but the bottom edge is formed into a corrugated shape to form a rake shape, the soil surface is easily scraped and leveled, and the soil mass is easily cracked and formed. Yes. Further, the scraping leveling plate 7 has a mounting edge portion 42 which is attached so as to be polymerized on the rear surface side of the lower end portion of the rear cover 6, and a scraping leveling portion 43 which scrapes the soil surface. It is formed by bending into a form, and the action angle of the scraping edge 43 is made upright in the vertical direction with respect to the action posture of the rear cover 6 with respect to the cultivated soil surface, so that the soil surface can be easily leveled. It is. The mounting bolts 40 and 41 may be configured to be easily attached / detached using wing nuts 44.

  The slope pressing plate 5 of the rear cover 6 is rotated rearward around the pressing plate hinge 8 of the grooved earth plate 3 to form an upright. At this time, the lower end portion of the rear cover 6 is In a state where the scraping leveling plate 7 is removed, the slope pressing plate 5 is set to rotate at the earthing angle position. A rotation angle around the pressing plate hinge 8 is determined in advance by a stopper or the like (not shown), and the vehicle body 21 is advanced in a state where the rear cover 6 is set to rotate to the lower groove cutting culture formation position to perform the tilling work. In response to the grooving soil resistance between the soil and the cultivated soil, the right and left sloped pressure plates 5 are automatically rotated to the rear and rotated until they are locked by the stoppers. It is set as the form which maintains. In this embodiment, the configuration can be simplified and the operation can be simplified because it is possible to immediately switch to the grooving culture posture by removing the leveling plate 7 from the lower end edge of the rear cover 6.

  Further, in order to set the culturing angle of the slope pressing plate 5, between the groove cutting culturing plate 3 and the left and right slope pressing plates 5 or the hinge plate 9 that rotates around the pressing plate hinge 8, It is also possible to set a soiling angle by providing an expansion / contraction link mechanism such as a turnbuckle.

  Since the tillage claw rotor 1 has a center drive configuration in which the tillage transmission case 23 is positioned and set at the center of the tillage width, an uncultivated portion remains directly below the transmission case 23 at the time of tillage work. Attach a resistance rod 12 to crush the soil at the location. The resistance rod 12 is formed with a rod hole 11 at the center position of the rear portion of the rotor cover 2, and a socket 45 made of each tube material is fitted in the rod hole 11 in the vertical direction. The resistance rod 12 is inserted into the rear end of the transmission case 23 so that the lower end of the spatula 46 is positioned on the rear side or the side portion of the transmission case 23. A pin hole 47 is formed in the fitting portion between the resistance bar 12 and the socket 45 at an appropriately spaced position in the vertical direction, and the set pin 48 is inserted into and removed from the pin hole 47, Depth setting position can be determined. A tightening bolt 49 is attached to the upper end of the socket 45 to prevent the resistance rod 12 from swinging during operation. Further, a bracket 14 having a square shaft shape or a round shaft shape is projected on the upper rear side of the socket 45, and the arm socket 17 of the tail wheel 16 arm 15 is fitted to and supported by the bracket 14. Can be stored and held.

  A pin hole for inserting / removing the set pin 49 is formed in a fitting overlap portion between the arm socket 17 of the tail wheel arm 15 and the bracket 14 to stabilize the mounting posture of the tail wheel 16 and the arm 15. The tail wheel arm 15 supported by the bracket 14 can be supported in an upward posture with the tail wheel 16 positioned upward (FIGS. 1, 2, 5, and 8). In this work mode, as the tillage work posture D, the rear cover 6 is brought into sliding contact with the lower tillage soil surface to the scraping leveling A, so that the rearward scattering of the tilled soil is prevented and the scraping leveling plate 7 is attached. When soiling, the soil surface can be leveled.

  When the tilling work of the tilled soil is performed, the resistance bar 12 is pulled up to the upper end position, the scraping leveling plate 7 is removed from the rear cover 6, the rear cover 6 is rotated downward, and the bracket 14 The tail wheel arm 15 fitted and attached to the bottom is attached with the tail wheel 16 facing downward, and the tail wheel 16 part receives the rear turning of the rear side surface of the grooving soil plate 3 to suppress the rear turning due to the action of the grooving soil. Set to form (FIGS. 6 and 9). In this embodiment, the slope pressing plate 5 of the rear cover 6 is set to the cultivating posture C by making it turnable or turning to the rear side.

  When working with the rear cover 6 as an upright, instead of mounting the tail wheel arm 15 downward as described above and receiving the back of the grooved earth plate 3 with the tail wheel 16, A simple holding arm 60 having no tail wheel 16 different from the wheel arm 15 is attached by fitting the socket 61 of the holding arm 60 to the bracket 14 (FIG. 9), and the lower end of the holding arm 60. By supporting the rear lower surface of the partial groove-growing soil plate 3, it is possible to adopt a configuration in which the groove-growing action is performed.

  Further, the arm socket 17 of the tail wheel arm 15 is removed from the bracket 14 and inserted into the lower end portion of the resistance rod 12, and a pin hole 47 formed in the lower end portion of the resistance rod 12 and an arm fitted therein. By inserting the set pin 52 over the pin hole formed between the socket 17 and the road surface when traveling, the position of the tail wheel 16 is grounded and supported on the ground in front of the grooving earth plate 6 (FIG. 7), it can be set as the traveling movement posture E. In this case, when the rear cover 6 is not used, the rear cover 6 is rotated upward around the hinge pin 37 so that the insertion hole 13 of the grooved earth plate 3 is fitted to the upper bracket 14. The storage posture B can be held.

  The scraping leveling plate 7 removed from the rear cover 6 as described above is attached to the upper portion of the rotor cover 2 by being superposed and supported laterally, and is supported and accommodated. A bolt hole that fits into the mounting bolt 40 is formed in the mounting edge portion 42 of the leveling plate 5, and this bolt hole is fitted into a fixing bolt 50 that protrudes from the upper surface of the rotor cover 2. It can be supported and can be fastened and fixed with a wing nut 51.

  The upper side surface portion of the rotor cover 2 is formed with a wide and wide space between the upper handle 20 frame portion and the scraper leveling plate 7, the tail wheel 16 and the like. Even if it is supported and stored, it is unlikely to interfere with tillage work and operation.

  An insertion hole 13 is formed at the center lower portion of the grooved earth plate 3 of the rear cover 6, and a rubber cover 52 having a slit hole is provided in the insertion hole 13, and the slit hole of the rubber cover 52 is provided. The tail wheel arm 15 can be protruded rearward from the insertion hole 13 (FIG. 8). The tail wheel 16 at the lower end of the tail wheel arm 15 can be installed and rotated on the bottom surface of the culture groove on the lower rear side of the grooving culture plate 3. In this embodiment, the resistance rod 12 is placed on the tillage portion, and is installed and supported on the bottom of the cultivation groove on the rear side of the grooving cultivation plate 3.

DESCRIPTION OF SYMBOLS 1 Tillage claw rotor 2 Rotor cover 3 Groove cutting earth plate 4 Earthing side board edge 5 Slope pressing board 6 Rear cover 7 Scraping leveling board 8 Pressing plate hinge 9 Hinge plate 10 Outer edge 11 Rod hole 12 Resistance rod 13 Insertion hole 14 Bracket part 15 Wheel arm 16 Tail wheel 17 Arm socket

Claims (3)

  A grooved earth plate having a reverse trapezoidal shape in a front view (positioned substantially at the center in the width direction of the rotor cover (2) at the rear lower end edge of the rotor cover (2) covering the upper periphery of the tilling claw rotor (1) 3) and a substantially rectangular rear cover (6) consisting of a slope pressing plate (5) that can be rotated rearward relative to the left and right soil-side plate edges (4) of the groove-cutting soil plate (3), An insertion hole (13) through which a bracket can be inserted into the grooving earth plate (3) is formed in a tiller that is provided so as to be pivotable up and down and is provided with a scraping leveling plate (7) at the rear edge of the rear cover (6). A resistance rod (12) protruding downward through a rod hole (11) at the rear portion of the rotor cover (2) is provided, and when the rear cover (6) is turned upright, the groove cutting earth plate (3 ) Is inserted into the bracket portion (14) above the rotor cover (2) and the insertion hole (13) is raised. Ridges standing device tiller, characterized in that holding configured to be able to energize.   A wheel arm (15) configured to protrude rearward from a resistance rod (12) located on the front side of the rear cover (2) is inserted into a grooved earth plate (3) insertion hole (13) of the rear cover (2). 2. A tiller for a tiller according to claim 1, wherein a tail wheel (16) that protrudes rearward and supports the ground is provided on the bottom surface of the soil groove at the rear end of the wheel arm (15). apparatus.   The insertion hole (13) of the rear cover (6) that has been turned upright is inserted into the bracket (14) at the top of the rotor cover (2), and the bracket (14) protruding rearward from the insertion hole (13). The tiller device for a tiller according to claim 1 or 2, wherein the arm socket (17) of the wheel arm (15) is fitted and attached to the) portion.

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