JP2014180215A - Rotary cover of tiller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem in which when mud is deposited on the inside surface of a side cover formed at the right and left both sides of a rotary head cover covering the peripheral surface of a tilling claw rotating part, and thereby a moving resistance of listed soil is increased and a listing performance is decreased, and the side cover gets heavy and the opening turning operation becomes difficult, and to provide a lining sheet inside the side cover so that the tillage soil is hard to be deposited so as to carry out listing operation smoothly, thereby facilitating the opening/closing and operation of the side cover.SOLUTION: A structure of a rotary cover of a tiller is characterized by providing a lining sheet 8 formed substantially in a fan shape in one piece by forming: a lining part 6 for covering it along the inside surface of a side cover 5 by a sheet material such as a rubber material or a synthetic resin material; and a connecting corrugation 7 expanded and connected from the front and rear parts to the side of a rotary head cover 3.

Description

  The present invention relates to a rotary cover for a tiller that covers an inner surface of a side cover with an elastic sheet such as a rubber sheet material or a synthetic resin sheet material.

  The inner peripheral surface of the rotary upper cover is closely covered with a synthetic resin material sheet, or a technique of connecting with a rubber plate-like or fan-like sheet between the rotary upper cover and the side cover on the side (for example, Patent Documents 1 and 2) are known.

Japanese Utility Model Publication No. 61-54306 JP 2008-161061 A

  The side covers formed on the left and right sides of the rotary upper cover that covers the upper peripheral surface of the tilling claw rotating part rotate up and down relative to the rotary upper cover to open and close the left and right outer surfaces of the rotating claw rotation. It is possible to perform operations and plowing grass work, etc., but if mud adheres to the inner surface of this side cover, the movement resistance of the upright soil will increase, and the side cover performance will be reduced. Becomes heavy and it becomes difficult to open and rotate. Therefore, a lining sheet is provided on the inner side of the side cover so that the tilling action can be smoothly performed as a form in which the cultivated soil does not easily adhere, and the opening and closing operation and operation of the side cover are facilitated.

  A rotary upper cover 3 that covers the upper peripheral portion of the rotary rotary 2 that rotates around the rotary shaft 1, and the left and right sides of the rotary upper cover 3 are turned up and down around the open / close hinge 4 so that the side of the rotary rotary 2 is moved. In a rotary cover of a tiller having a side cover 5 that can be opened and closed, a lining 6 that covers the inner surface of the side cover 5 with a sheet material such as a rubber material or a synthetic resin material, and front and rear portions thereof A rotary cultivator characterized in that it forms a connecting pleat portion 7 that is extended and connected to the rotary upper cover 3 side, and is provided with a lining sheet 8 that is formed in a single and substantially fan-shaped form. The cover is configured.

  The soil cultivated by the rotation of the cultivating rotary 2 slides or collides with the inner surfaces of the rotary upper cover 3 and the side cover 5, and is guided laterally or rearward to form a cultivated soil surface. Further, the side cover 5 is moved outwardly and upwardly around the open / close hinge 4 to perform the middle tillage weeding work on the slope surface part, and further, the standing work is carried out by attaching a vertical cultivator on the rear part. In some cases, the side cover 5 is opened and rotated to the upper part on the outer side, so that the connecting pleats 7 of the lining sheet 8 are expanded, and the cover interval portion K between the edges of the rotary upper cover 3 and the side cover 5 is set. Covering and preventing outward scattering of the cultivated soil from the cover interval portion K. Thus, even if the side cover 5 is closed at the outer end of the rotary upper cover 3 or is opened upward to the outside, the inner cover 8 formed on the inner side surface or the lower side surface of the side cover 5 Guide the tilled soil and the cultivated soil, etc., and make the cultivated soil upright. Thus, the lining sheet 8 formed on the inner surface of the side cover 5 is formed on the smooth surface in a single plate shape across the connecting pleat portions 7 at both the front and rear ends, so that the cultivation soil is scattered and collided. Even if it receives, it is easy to slip, resistance can be made small, and adhesion can be decreased. Further, the lining sheet 8 in the form of a single plate has a connecting pleat portion 7 at the front and rear end portions and is widely formed in a fan-like shape. By attaching the 15 and 16 parts to the rotary upper cover 3 part, the connecting pleat part 7 can be easily and easily attached. Since the lining portion 6 of the side cover 5 is formed as a single-sheet sheet form integrally formed with the connecting pleat portion 7, the attachment joint portion is eliminated, and no joint gap or interval portion is generated. As a form in which the gap intrusion hardly occurs, adhesion of the tilled soil or the like is prevented by the elasticity or bending action of the lining sheet 8, and the guidance of the tilled soil or the middle-cultivated weeds is performed smoothly.

  The rotary upper cover 3 for attaching the side cover 5 so as to be rotatable around the opening / closing hinge 4 is movable with respect to the rotary frame 9 so as to be movable in the front-rear direction A or rotatable in the vertical direction B. Configure to form.

  The rotary upper cover 3 can be moved in the front-rear direction A with respect to the rotary frame 9 or can be rotated in the up-down direction C so as to be adapted to the working mode for adjusting the tilling depth, When the mounting-related position is set to a suitable position, the side cover 5 is also moved and rotated in accordance with the movement and opening / closing rotation of the rotary upper cover 3, thereby cultivating soil and the like by the side cover 5. In response to the scattering of the side part, it is guided to fall to the position of the cultivated soil surface below.

  The lining sheet 8 is attached to the inner side surface of the side cover 5 via a support 10, and a sheet interval portion 11 having an appropriate interval is formed between the opposing surfaces of the lining sheet 8 and the side cover 5. .

  The side cover 5 is attached to the outer end portion of the rotary upper cover 3 and is pivoted to open and close integrally with the rotary upper cover 3 or around the opening / closing hinge 4 at the outer end portion of the rotary upper cover 3. However, since the sheet spacing portion 11 having an appropriate interval is formed along the inner side surface of the side cover 5 and the lining sheet 8 is stretched by the support 10, the soil cultivated by the tilling rotary 2 is used. Is received by the surface of the lining sheet 8 and shock is absorbed, guided by sliding, and cultivated outward. The lining portion 6 of the lining sheet 8 forms a sheet interval portion 11 with an appropriate interval between the surface of the side cover 5, so that the oscillating action when receiving the scattering of the cultivated soil is easily performed. The shock absorption of the soil is facilitated, and the vibration and swinging of the lining portion 6 can prevent the cultivation soil and the like from adhering to the lining sheet 8 surface. Further, the opening / closing rotation of the side cover 5 around the opening / closing hinge 4 expands / contracts the connecting fold 7 at both front and rear ends. Further, when the cultivation soil collides with the connecting pleat portion 7, the connected pleat portion 7 is swung, but is supported by the support 10 by deformation such as expansion / contraction and swing of the connecting pleat portion 7. Further, the inner lining 6 that is lined with an appropriate interval between the inner surfaces of the side covers 5 is also expanded and contracted to be easily expanded and contracted to adhere dredged soil and the like. To prevent.

  Further, the sheet interval portion 11 between the surface of the side cover 5 and the surface of the lining sheet 8 is formed so as to be small on the side of the opening / closing hinge 4 of the side cover 5 and to be large on the side of the opening / closing end. Form in a surface form.

  The lining sheet 8 that is lined along the inner surface of the side cover 5 is formed so that the sheet spacing portion 11 is formed to be small on the side of the opening / closing hinge 4 and to be large on the outer side. Thus, the soil does not enter between the back surface of the side cover 5 and the lining sheet 8.

  Further, a cover edge 12 is formed on the outer peripheral edge portion of the side cover 5 so as to be bent at an appropriate height in a substantially orthogonal shape to the inside, and the lining sheet 8 is disposed on the outer peripheral side beyond the cover edge 12. Lay so as to overhang.

  The side cover 5 stretches the lining sheet 8 along the inner surface, receives the scattering of the cultivated soil by the cultivating rotary 2, and reflects and collides it so as to diffuse and fall. The lining portion 6 of the lining sheet 8 is supported by the cover edge 12 formed on the outer peripheral edge portion of the side cover 5, and a sheet interval portion 11 having an appropriate interval is formed between the inner surface of the side cover 5. Thus, the swinging distortion of the lining portion 6 is performed smoothly. Further, the side cover 5 can be rotated up and down around the opening / closing hinge 4 with respect to the rotary upper cover 3, but the side cover 5 is formed by forming a cover edge 12 formed on the outer peripheral edge of the side cover 5. The rigidity of the soil itself is increased to provide guidance for stable tillage soil collisions and reflections.

  According to the first aspect of the present invention, the impact of scattering of the tilled soil due to the rotation of the tillage rotary 2 is mitigated by the lining sheet 8, and the cover interval portion formed between the rotary upper cover 3 and the side cover 5 is closed. Can increase the sex. The connecting pleat portion 7 at the front and rear end portions of the lining sheet 8 is in the form of a lining sheet 8 and a single-plate fan-shaped sheet or mat, so that the configuration as the lining sheet 8 is simplified. It is possible to easily, easily and stably attach the attachment from the side cover 5 to the rotary upper cover 3, and the side cover 5 can be smoothly opened and closed. Moreover, the formation of rough surfaces such as seams and seam intervals and gaps can be eliminated by the single plate-like lining sheet 8 surface, the frictional resistance of tilled soil and the like can be reduced, and soil adhesion can be reduced.

  The lining sheet 8 stretched along the inner surface of the side cover 5 is formed with a connecting pleat portion 7 formed in a single plate shape at the front and rear ends, and the connecting pleat portion 7 is attached to the rotary upper cover 3. Since it is connected, when the side cover 5 is opened and closed, the connecting pleat portion 7 is distorted and deformed into a pleated shape, and even if there is soil adhering to the inner surface of the connecting pleat portion 7, it is separated and separated. While facilitating, the lining part 6 can also be propagated and deformed to promote the peeling effect of soil or the like adhering to the surface of the lining part 6.

  According to the second aspect of the present invention, the side cover 5 can be moved and rotated integrally with the movement of the rotary upper cover 3 relative to the rotary frame 9 and the opening / closing rotation adjustment, and the lining seat 8 can also move integrally, and the cover interval part by the opening and closing rotation of the side cover 5 can be closed by the connecting pleat part 7 of the lining sheet 8.

  According to a third aspect of the present invention, a sheet interval portion 11 having an appropriate interval is formed between the side cover 5 and the lining sheet 8 lined on the inner side portion via a support 10. The lining sheet 8 can be easily vibrated and distorted due to a soil collision, can absorb the impact force of the scattered soil, can reduce the adhesion of the cultivated soil, and can be easily cleaned and maintained. be able to.

  In the invention according to claim 4, when the soil cultivated by the tillage rotary 2 collides with the side cover 5, the back surface of the side cover 5 in the vicinity of the opening / closing hinge 4 and the lining sheet 8 are close to or in close contact with each other. Therefore, there is no soil intrusion from the opening / closing hinge 4 side, and the sheet spacing portion 11 is formed on the back surface of the lining portion 6 by the inclined a surface of the lining portion 6 so as to easily absorb vibration distortion. Therefore, it is possible to improve the shock absorption and reduce the adhesion of the cultivated soil.

  According to the fifth aspect of the present invention, the side cover 5 attached to the outer side of the rotary upper cover 3 so as to be openable and closable forms a cover edge 12 along the outer peripheral edge, and the cover edge 12 forms the lining sheet 8. Since the side cover 5 is light and thin, the rigidity of the side cover 5 is increased, and the collision reflection of the tilled soil can be performed in a stable and stable state. Supporting the inner surface, maintaining the sheet spacing portion 11 accurately, allowing smooth vibration, distortion, etc. of the lining sheet 8 portion, maintaining a high diffuse reflection effect of the cultivated soil, and cultivating with a simple configuration It can be set as the side cover 5 with which soil does not adhere easily.

A side view of a field cultivator. The plan view. The top view (A) of a rotary cover part, and a partial cutaway rear view (B). The side view of a cultivation rotary part. The bottom view from the side cover part lower side. The rear view which shows the open rotation state of a rotary cover part. The rear view which shows the action state. FIG. The top views (A) and (B) which show the example of a form of a lining sheet part.

  Based on the drawings, the cultivator has a pair of left and right wheels 23 mounted on a shaft 24 via a transmission case 22 at a lower portion of a transmission case 21 having an engine 20 mounted on the front portion, and is mounted on a rear upper portion of the transmission case 21. Is provided with a handle 25 protruding rearward, and a grip portion 26 at the rear end of the handle 25 can be gripped and traveled. A tilling transmission case 27 is provided at the rear end lower part of the transmission case 21, and a rotary shaft 1 protruding on both the left and right sides is mounted. A tilling claw T is arranged around the rotary shaft 1, and a tilling rotary 2 is provided. The rotary upper cover 3 that covers the upper side of the tillage rotary 2, the side cover 5 that covers the left and right sides, and the like are configured. The rear frame 9 is provided at the upper rear side of the tillage transmission case 27, and the upper end portion of the resistance bar 29 is attached to the rear end portion so that the vertical movement can be adjusted.

  By driving the engine 20, the shaft is driven to rotate, and the wheel 23 and the shaft 24 can be driven to rotate from the transmission gear mechanism in the transmission case 21 via the chain mechanism of the transmission case 22. Also, the tillage rotary 2 can be transmitted and rotated from the transmission gear mechanism in the transmission case 21 via the chain mechanism in the tillage transmission case 27, so that the soil surface of the traveling field can be tilled to a suitable depth and width. The handle 25 includes a main clutch lever 31 that engages and disengages a main clutch that is transmitted from the engine 20 to the input shaft of the transmission case 21, a speed change lever 32 that can switch a vehicle speed between a high speed and a low speed, and a throttle lever 33. In addition, a stand lever 70 that can rotate the stand 39 is provided, and a shift lever 34, a shift lever 35 for the tillage rotary 2, and the like are disposed at the base of the handle 25 at the top of the mission case 21. At the front end of the engine base 36 on the lower side of the engine 20, a stand 39 that can be swung up and down around a stand shaft 38 by a spring 37 is provided.

  The rotary cover that covers the rotation upper peripheral portion of the tillage rotary 2 is composed of a rotary upper cover 3 that covers the front and rear portions of the tillage transmission case 27 and side covers 5 that are provided at positions on both the left and right sides of the rotary upper cover 3. The side cover 5 is positioned at the outer end portion of the rotary upper cover 3 and is configured to be vertically opened and closed.

  A mounting plate 42 in the front-rear direction is formed on the inner side (rear frame 9 side) of the rotary upper cover 3, and the mounting plate 42 is joined to both the left and right side surfaces of the rotary rear frame 9 to form an arc-shaped elongated hole 49. The rotary cover is attached so as to be movable in the front-rear direction by tightening the bolt 50 to be passed. The rotary upper cover 3 is pivotally supported on the outside of the mounting plate 42 via a cover hinge 52 so as to be pivotable in the vertical direction. The bracket 43 provided above the mounting plate 42 and the upper surface of the rotary upper cover 3 are provided. When the link stay 72 is connected, the crossover portion of the expansion / contraction link arm 44 is tightened with the tightening handle 45, so that the rotary upper cover 3 is rotated up and down around the cover hinge 52, and an appropriate side opening angle is obtained. Can be set to position. The rotary upper cover-3 is composed of an inner cover 3A on the mounting plate 42 side and an outer cover 3B on the outer side, and is superposed vertically so that the rotary upper cover 3B is placed on the rotary shaft 1 with respect to the inner cover 3A. The width of the rotary upper cover 3 can be adjusted by moving left and right along the direction. A long slot 46 in the lateral direction is formed in the inner cover 3A, and a nut 48 is screwed onto a bolt 47 protruding from the outer cover 3A onto the inner cover 3A, thereby fixing the mounting position of the outer cover 3B. Thus, the rotary upper cover 3 can be moved and adjusted in the front-rear direction A by tightening the bolt 50, the cover position with respect to the tilling rotary 2 is adjusted to adapt to the tilling depth, and the outer cover 3B is moved inward and outward by the nut 48. The cover width can be adjusted to adapt to the tillage width. In addition, according to the working mode of the tilling rotary 2, the rotary upper cover 3 can be operated by switching the rotation upper and lower C around the cover hinge 52. Further, rear covers 53 and 54, such as rubber plates, are provided at the rear end of the rotary upper cover 3, the inner rear cover 53 is attached to the rear end of the inner cover 3A, and the outer rear cover 54 is attached to the rear end of the outer cover 3B. Is attached. These rear covers 53, 54 cover the rear side of the tillage rotary 2, receive rearward scattering of the tilled soil, guide it to the soil dredging surface, and level the soil surface.

  The side cover 5 is configured to cover the left and right outer end surfaces of the rotary upper cover 3 and guides the side cover 5 by receiving lateral scattering of tillage soil or the like. The upper end of the side cover 5 is connected to the rotary upper cover. The outer surface of the rotary cover 3 can be turned up and down B around the opening / closing hinge 4 at the outer end of the outer cover 3 </ b> B portion 3 to switch the outer surface of the rotary upper cover 3 between the closed state D and the open state E. The side cover 5 is formed with a cover edge 12 that is bent at an appropriate height inward along the outer peripheral edge, and an elastic sheet such as a rubber mat is formed over the inner edge of the cover edge 12. A lining sheet 8 made of a material is provided, and the lining sheet 8 is provided with a support 10 interposed therebetween.

  The lining sheet 8 is attached and supported by the support 10 by arranging and attaching stay bolts 56 along the inner side of the cover edge 12 at the outer peripheral edge of the side cover 5. A support nut 58 that supports the surface of the lining sheet 8 is provided at an appropriate interval between the inner surface of the lining sheet 5, and a support hole 59 of the lining sheet 8 is fitted into and supported by the support nut 58. The lock nut 60 is screwed, and the support portion of the lining sheet 8 is sandwiched and fixed between the support nut 58 and the lock nut 60. Further, on the opening / closing hinge 4 side of the lining sheet 8, a support hole of the lining sheet 8 is fitted into the bolt 57, and a lock nut 61 is screwed and fixed. By attaching the lining sheet 8 through the support 10 in this way, a sheet interval portion 11 having an appropriate interval is formed between the inner surface of the side cover 5 and the lining sheet 8, as shown in FIG. In addition, the opening / closing hinge 4 side of the lining sheet 8 is stretched in the form of an inclined a surface by approaching or closely contacting the inner surface of the side cover 5.

  This lining sheet 8 is connected to a lining portion 6 facing the inner side surface of the side cover 5 and a square or delta shape extending from the front end side and the rear end side of the lining portion 6. From the pleat portion 7, it is formed in a fan shape as a single plate shape. And the concave edge part 19 which positions the opening-and-closing hinge 4 in the center part of this fan-shaped form is formed, and the front attachment edge 15 and the rear attachment edge 16 formed on both sides of this concave edge part are 180 degrees thru | or this. It is formed in a form that is greatly expanded as described above, and is formed in a straight-line form (FIG. 9-A) in the front-rear direction, or in an inverted 8-character form (FIG. 9-B). The front mounting edge 15 is attached and connected to the front half edge of the outer end of the outer cover with a fixture 17, and the rear mounting edge 16 is attached and connected to the rear half edge of the outer cover 3B with the fixture 17. These front and rear connecting pleat portions 7 cover a cover interval portion K between the outer end of the rotary upper cover 3 and the side cover 5.

  Here, the rotary cover is formed by rotating the rotary upper cover 3 covering the upper peripheral portion of the rotary rotary 2 rotating around the rotary shaft 1 and rotating the left and right sides of the rotary upper cover 3 up and down around the opening / closing hinge 4. In a rotary cover of a tiller having a side cover 5 that can open and close a side portion of the tillage rotary 2, an inner surface of the tiller rotary 2 that is covered along the inner surface of the side cover 5 by a sheet material such as a rubber material or a synthetic resin material. A configuration in which a tension portion 6 and a connecting pleat portion 7 that is extended and connected from the front and rear portions to the rotary upper cover 3 side are formed, and a lining sheet 8 that is formed in a single and substantially fan shape is provided. To do.

  The soil cultivated by the rotation of the cultivating rotary 2 slides or collides with the inner surfaces of the rotary upper cover 3 and the side cover 5, and is guided laterally or rearward to form a cultivated soil surface. Also, when the side cover 5 is moved outward and upward around the open / close hinge 4 to perform the middle tillage weeding work on the slope surface part, and further, when the standing work is carried out by installing a vertical cultivator on this rear part By opening the side cover 5 to the upper outer side, the connecting pleat 7 of the lining sheet 8 is expanded to cover the cover gap K between the edges of the rotary upper cover 3 and the side cover 5. Thus, the outward spreading of the cultivated soil from the cover interval portion K is prevented. Thus, even if the side cover 5 is closed at the outer end of the rotary upper cover 3 or is opened upward to the outside, the inner cover 8 formed on the inner side surface or the lower side surface of the side cover 5 Guide the tilled soil and the cultivated soil, etc., and make the cultivated soil upright. Thus, the lining sheet 8 formed on the inner surface of the side cover 5 is formed on the smooth surface in a single plate shape across the connecting pleat portions 7 at both the front and rear ends, so that the cultivation soil is scattered and collided. Even if it receives, it is easy to slip, resistance can be made small, and adhesion can be decreased. Further, the lining sheet 8 in the form of a single plate has a connecting pleat portion 7 at the front and rear end portions and is widely formed in a fan-like shape. By attaching the 15 and 16 parts to the rotary upper cover 3 part, the connecting pleat part 7 can be easily and easily attached. Since the lining portion 6 of the side cover 5 is formed as a single-sheet sheet form integrally formed with the connecting pleat portion 7, the attachment joint portion is eliminated, and no joint gap or interval portion is generated. As a form in which the gap intrusion hardly occurs, adhesion of the tilled soil or the like is prevented by the elasticity or bending action of the lining sheet 8, and the guidance of the tilled soil or the middle-cultivated weeds is performed smoothly.

  The rotary upper cover 3 for attaching the side cover 5 so as to be rotatable around the opening / closing hinge 4 is movable with respect to the rotary frame 9 so as to be movable in the front-rear direction A or rotatable in the vertical direction B. Configure to form.

  The rotary upper cover 3 can be moved in the front-rear direction A with respect to the rotary frame 9 or can be rotated in the up-down direction C so as to be adapted to the working mode for adjusting the tilling depth, When the mounting-related position is set to a suitable position, the side cover 5 is also moved and rotated in accordance with the movement and opening / closing rotation of the rotary upper cover 3, thereby cultivating soil and the like by the side cover 5. In response to the scattering of the side part, it is guided to fall to the position of the cultivated soil surface below.

  The lining sheet 8 is attached to the inner side surface of the side cover 5 via a support 10, and a sheet interval portion 11 having an appropriate interval is formed between the opposing surfaces of the lining sheet 8 and the side cover 5. .

  The side cover 5 is attached to the outer end portion of the rotary upper cover 3 and is pivoted to open and close integrally with the rotary upper cover 3 or around the opening / closing hinge 4 at the outer end portion of the rotary upper cover 3. However, since the sheet spacing portion 11 having an appropriate interval is formed along the inner side surface of the side cover 5 and the lining sheet 8 is stretched by the support 10, the soil cultivated by the tilling rotary 2 is used. Is received by the surface of the lining sheet 8 and shock is absorbed, guided by sliding, and cultivated outward. The lining portion 6 of the lining sheet 8 forms a sheet interval portion 11 with an appropriate interval between the surface of the side cover 5, so that the oscillating action when receiving the scattering of the cultivated soil is easily performed. The shock absorption of the soil is facilitated, and the vibration and swinging of the lining portion 6 can prevent the cultivation soil and the like from adhering to the lining sheet 8 surface. Further, the opening / closing rotation of the side cover 5 around the opening / closing hinge 4 expands / contracts the connecting fold 7 at both front and rear ends. Further, when the cultivation soil collides with the connecting pleat portion 7, the connected pleat portion 7 is swung, but is supported by the support 10 by deformation such as expansion / contraction and swing of the connecting pleat portion 7. Further, the inner lining 6 that is lined with an appropriate interval between the inner surfaces of the side covers 5 is also expanded and contracted to be easily expanded and contracted to adhere dredged soil and the like. To prevent.

  Further, the sheet interval portion 11 between the surface of the side cover 5 and the surface of the lining sheet 8 is formed so as to be small on the side of the opening / closing hinge 4 of the side cover 5 and to be large on the side of the opening / closing end. Form in a surface form.

  The lining sheet 8 that is lined along the inner surface of the side cover 5 is formed so that the sheet spacing portion 11 is formed to be small on the side of the opening / closing hinge 4 and to be large on the outer side. Thus, the soil does not enter between the back surface of the side cover 5 and the lining sheet 8.

  Further, a cover edge 12 is formed on the outer peripheral edge portion of the side cover 5 so as to be bent at an appropriate height in a substantially orthogonal shape to the inside, and the lining sheet 8 is disposed on the outer peripheral side beyond the cover edge 12. Lay so as to overhang.

  The side cover 5 stretches the lining sheet 8 along the inner surface, receives the scattering of the cultivated soil by the cultivating rotary 2, and reflects and collides it so as to diffuse and fall. The lining portion 6 of the lining sheet 8 is supported by the cover edge 12 formed on the outer peripheral edge portion of the side cover 5, and a sheet interval portion 11 having an appropriate interval is formed between the inner surface of the side cover 5. Thus, the swinging distortion of the lining portion 6 is performed smoothly. The side cover 5 can be rotated up and down around the opening / closing hinge 4 with respect to the rotary upper cover 3, but the rigidity is increased by the formation of the cover edge 12 formed on the outer peripheral edge of the side cover 5. Thus, stable tillage soil collision, reflection, and other guidance can be performed.

DESCRIPTION OF SYMBOLS 1 Rotary shaft 2 Tillage rotary 3 Rotary top cover 4 Opening and closing hinge 5 Side cover 6 Lining part 7 Connection fold part 8 Lining sheet | seat 9 Rotary frame 10 Support tool 11 Sheet | seat space | interval part 12 Cover edge a Inclination A The front-back direction B Up-down direction

Claims (5)

  A rotary upper cover (3) covering the upper periphery of the rotary rotary (2) rotating around the rotary shaft (1), and right and left sides of the rotary upper cover (3) are vertically rotated around the open / close hinge (4) Then, in the rotary cover of the tiller having the side cover (5) capable of opening and closing the side portion of the tilling rotary (2), the side cover (5) is made of a sheet material such as a rubber material or a synthetic resin material. A lining portion (6) that covers the inner surface of the rim and a connecting pleat portion (7) that extends and connects from the front and rear portions to the rotary upper cover (3) side are formed, and is substantially in a single piece. A rotary cover for a cultivator comprising a lining sheet (8) formed in a fan shape.   The rotary upper cover (3) for rotatably mounting the side cover (5) around the open / close hinge (4) is movable in the front-rear direction (A) with respect to the rotary frame (9) or in the vertical direction ( The rotary cover of the tiller according to claim 1, wherein the rotary cover is configured to be movable to B).   The said lining sheet | seat (8) is attached to the inner surface of a side cover (5) via a support tool (10), and it is a suitable space | interval between the opposing surfaces of a lining sheet | seat (8) and a side cover (5). The rotary cover of the tiller according to claim 1, wherein the sheet spacing portion is formed.   A sheet gap (11) between the side cover (5) surface and the lining sheet (8) surface is formed small on the side of the opening / closing hinge (4) of the side cover (5), and on the opening / closing end side. 4. The rotary cover for a tiller according to claim 1, wherein the rotary cover is formed in the form of an inclined surface which is enlarged and inclined (a).   A cover edge (12) is formed on the outer peripheral edge portion of the side cover (5) so as to be bent at an appropriate height substantially orthogonally to the inside, and the lining sheet (8) is attached to the cover edge ( The rotary cover for a tillage machine according to any one of claims 1, 2, 3 and 4, wherein the rotary cover is laid so as to project to the outer peripheral side beyond 12).

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