JP5107676B2 - Management machine - Google Patents

Description

  The present invention relates to a management machine capable of plowing with a tilling claw.

Conventionally, as one form of a management machine, an engine and a mission case are mounted on a body frame, and a handle is extended from the body frame, while a tilling claw is attached to the outer periphery of a tilling shaft extending from the mission case to the left and right sides, A rotary wheel having a rotary disc (side disc) smaller in diameter than the rotation trajectory of the tilling claw is attached to both left and right end portions of the tilling shaft, and the outer periphery is formed to have a larger diameter than the rotation trajectory of the tilling claw. However, the rotary discs (side discs) are provided so as to be detachable through engaging projections provided on the side surfaces of the moving wheels (see, for example, Patent Documents 1 and 2).
JP 05-193530 A JP 2004-173634 A (see FIGS. 2 to 4)

  However, the moving wheels in the above-mentioned Patent Documents 1 and 2 use rubber tires fitted around the outer periphery of a rim, and a hub and a rim are connected by a plurality of spokes, like ordinary wheels. Therefore, the number of parts is large and the structure is complicated and expensive. In addition, since the weight is heavy, there is a problem that handling becomes troublesome.

  The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a management machine that has a simple configuration and that can easily remove and attach a moving wheel.

In order to achieve the above object, a management machine of the present invention includes an engine and a transmission case mounted on a machine frame, and a handle extends from the machine frame, while a tilling is performed on the outer periphery of a tilling shaft extending from the transmission case to the left and right sides. A claw is attached, and side discs having a smaller diameter than the rotation trajectory of the tilling claw are attached to the left and right ends of the tilling shaft, and the outer periphery is formed to have a larger diameter than the rotation trajectory of the tilling claw. a management machine wheel is detachably attached to the respective side disk, the moving vehicle wheel, a hub portion of the rotation center side portion along the outer surface of the side disks, out of the hub portion diameter side and a peripheral portion which is connected integrally to, the site extending over the said outer peripheral portion the hub unit, as appropriate intervals along the outer peripheral edge portion of the side disc in its circumferential direction Even without clamping-free low and Te so as to form two or more engaging grooves, and fin piece is provided which projects in the rotational center direction from the outer peripheral side, the engaging groove of the transport wheel The part near the center of the diameter including the part to be formed is made of an elastically deformable material, and in the state where the moving wheel is attached to the side disk, the outer peripheral edge is fitted in the engagement groove. The side disc is configured to be sandwiched between the left and right sides by the hub portion and the fin piece .

A plurality of invention according to claim 2, in the management apparatus according to claim 1, wherein the moving wheel, the notch portion toward the radial center from the outer periphery thereof at appropriate intervals along the circumferential direction It is provided at the place.

According to a third aspect of the present invention, in the management machine according to the second aspect of the present invention, the side disk and the moving wheel are provided with engaging means for preventing relative displacement between them in the circumferential direction. Is.

  According to the first aspect of the present invention, the moving wheels whose outer periphery is formed larger in diameter than the rotation trajectory of the tilling claw can be attached to and detached from each side disk, and the moving wheels include the At least two or more engagement grooves are formed to sandwich the outer peripheral edge of the side disk at an appropriate interval along the circumferential direction thereof, and the portion constituting the engagement groove in the moving wheel can be elastically deformed. Therefore, the moving wheels can be formed integrally and light weight.

In particular, since the center side portion of the diameter including the parts constituting the moving wheels sac Chi before Kigakarigomizo is one that is composed of elastically deformable material, for moving the outer circumferential edge portion of the side disc When fitting into the engagement groove in the wheel, it can be executed by a simple operation of simply stretching the elastically deformable material.

In the invention according to claim 2 , since the moving wheel is provided with a plurality of cut portions from the outer peripheral portion toward the radial center portion at appropriate intervals along the circumferential direction. For each outer peripheral portion, the operation of fitting the outer peripheral edge portion of the side disk into the engaging groove becomes easy.

According to the third aspect of the present invention, since the side disk and the moving wheel are provided with engaging means for preventing the relative displacement between them in the circumferential direction, Rotational force can be reliably transmitted to the moving wheels, and the management machine can be moved smoothly.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1 and FIG. 2, a management machine 1 according to the present invention has an engine 3 mounted on a machine body frame 2, and a transmission case 4 extending downward via a transmission case 4 is linked to the engine 3. is doing.

  While the base end portion of the handle 6 is attached to the upper portion of the mission case 5, a tillage shaft 7 that penetrates the lower portion of the mission case 5 and extends in the left-right direction is provided. Tillage claws 9 and 10 are attached to the outer peripheral surface of the tillage shaft 7.

  Disc-shaped side disks 11 (only one is shown in FIG. 2) are detachably attached to the left and right outer ends of the tilling shaft 7, respectively. The fuel tank 12 is provided above the engine 3, and the rotary covers 13 attached to the left and right sides of the body frame 2 cover the top of the tilling claws 9. A resistance rod 14 is attached to the rear end of the body frame 2.

  Further, as shown in FIGS. 1 and 2, a moving wheel 15 having a diameter larger than the rotation trajectory of the tilling claws 9 and 10 is detachably attached to each side disk 11.

  Next, the configuration of the moving wheel 15 will be described in detail. 3 to 6 show the first embodiment. The moving wheel 15 in this embodiment includes a plurality of fan-shaped outer peripheral portions 20 (four in the first embodiment) having a central angle of approximately 60 degrees in a side view, and a single flat plate-shaped hub closer to the center of the radius. The part 21 and the engaging groove 25 having an arc shape in a side view are integrally provided. Then, in order to form a plurality of outer peripheral portions 20 of the moving wheel 15 at appropriate intervals along the circumferential direction, four notches 22 that open in the radially outward direction are formed from the hub portion 21 to the outer peripheral portion 20. ing. In other words, the outer peripheral portion 20 including the portion constituting the engagement groove 25 in the moving wheel 15 is separated into a plurality through the notches 22 extending in the radial direction at appropriate intervals along the circumferential direction. Has been.

  Each outer peripheral portion 20 includes a fan-shaped core plate portion 23 in side view and lugs 24 a and 24 b that protrude on both front and back surfaces of the core plate portion 23. The direction of the pair of the wide lug 24a and the narrow lug 24b is alternately arranged along the circumferential direction of the moving wheel 15. The inner diameter side of the core plate portion 23 and the outer diameter side of the hub portion 21 in each outer peripheral portion 20 are integrally connected. In order to sandwich the outer peripheral edge portion of the side disk 11 having the diameter D1 at an appropriate interval along the circumferential direction at a portion straddling the inner diameter side of each core plate portion 23 and the outer diameter side of the hub portion 21. The fin piece 26 is integrally formed so that the engagement groove 25 is formed. Therefore, the fin piece 26 covers one surface of the engagement groove 25, faces the flat plate portion of the hub portion 21, and is formed so that the bottom portion of the engagement groove 25 having a circular arc shape in side view comes into contact with the outer peripheral surface of the side disk 11. ing.

  A portion near the center of the diameter including the portion constituting the engagement groove 25 in the moving wheel 15 (region having a diameter D1 in FIG. 6A) is made of an elastically deformable material. In the embodiment, the inner diameter side of each core plate portion 23, the entire hub portion 21, and the fin piece 26 are made of soft rubber having a high elongation rate. As a result, when the two outer peripheral portions 20 at positions opposite to each other in the diametrical direction of the moving wheel 15 are pulled in the radially outward direction, the hub portion 21 mainly extends in the diametrical direction, The distance of the engaging groove 25 can be extended from the diameter D1 of the side disk 11 to a distance D2 larger than that. On the other hand, the moving wheel 15 is integrally formed so that the outer diameter side of each core plate portion 23 and the lugs 24a and 24b are made of hard rubber having a low elongation rate.

  Further, of the fin pieces 26, the inner surfaces of the two fin pieces 26 at positions opposite to each other in the diametrical direction of the moving wheel 15 are formed perpendicular to the flat plate surface of the hub portion 21 and formed on the flat plate surface of the hub portion 21. A shaft-like engagement pin 29 is integrally formed so as to pass through the passage hole 27 (see FIGS. 5 to 6A and 6B). The engagement pin 29 engages with an engagement hole 30 formed in the side disk 11, thereby moving the engagement pin 29 with respect to the side disk 11 that rotates while being fitted in the engagement groove 25 of the movement wheel 15. It becomes an engagement means for preventing the wheel 15 from being relatively displaced in the circumferential direction.

  With the above configuration, in order to attach the moving wheels 15 to each side disk 11, the management machine 1 is stopped and one side disk 11 side is inclined slightly upward so that the side disk is in that state. A flat hub portion 21 is provided along the outer surface of the disk 11 and the two outer peripheral portions 20 on the lower side are radiused on one outer peripheral portion of the side disc 11 (for example, the lower outer peripheral portion of the side disc 11). The outer peripheral edge 20 is fitted from the outside, and the lower outer peripheral edge of the side disk 11 is fitted into each of the outer peripheral parts 20 engaging grooves 25, and the engaging pin 29 is inserted into the lower engaging hole 30. Next, while pulling the upper one outer peripheral portion 20 radially outward and turning up the fin piece 26, the upper outer peripheral portion of the side disk 11 is fitted into the engagement groove 25 in the outer peripheral portion 20, In addition, the engagement pin 29 is inserted into the upper engagement hole 30 (see FIG. 6B). Next, the outer peripheral edge 20 on the upper side of the side disk 11 is fitted into the engagement groove 25 in the outer peripheral portion 20 while pulling the last one outer peripheral portion 20 in the radial outward direction and turning up the fin piece 26. Put it in. Thus, since the moving wheel 15 is attached to the outer periphery of the side disk 11, a tool is not required for the mounting operation of the moving wheel 15, and the work is not time-consuming.

  When the management machine 1 is moved on the road, the moving wheels 15 having a diameter larger than the rotation trajectory of the tilling claws 9 and 10 are brought into contact with the ground. Since the engagement pin 29 is engaged with the engagement hole 30 between the disk 11 and the moving wheel 15, the rotational force from the side disk 11 is reliably transmitted to the moving wheel 15 and can move easily.

  When the moving wheel 15 is removed, the upper outer peripheral edge of the side disk 11 is removed from the engaging groove 25 by pulling the fin piece 26 while pulling the upper outer peripheral portion 20 radially outward. You can do it in the reverse order.

  In the moving wheel 15 of the second embodiment shown in FIG. 7, one outer peripheral portion 20 ′ is formed in a substantially semicircular shape in a side view, and the other radial portion has a fan shape with two central angles of approximately 60 degrees. The outer peripheral portion 20 is connected to one flat hub portion 21, and is connected to the outer peripheral portion 20 ′, 20 separated into three via the notch portion 22 and the outer peripheral portion of the hub portion 21. Each includes an engaging groove 25 and a fin piece 26. Each fin piece 26 has an engagement pin 29 on the inner surface. In this embodiment, it is preferable to insert the side disk 11 first into the engaging groove 25 of the substantially semicircular outer peripheral portion 20 ′. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In 3rd Embodiment shown in FIG. 8, the outer peripheral part 20 in the wheel 15 for a movement is separately formed in six along the circumferential direction. Although the engagement pin 29 is provided on the inner surface of the fin piece 26 connected to every other outer peripheral portion 20, the engagement pin 29 may be provided for each fin piece 26. In the third embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. As described above, when the number of the outer peripheral portions 20 is increased, the tensile force of each outer peripheral portion 20 with respect to the extending hub portion 21 is reduced, and the outer peripheral edge portion of the side disk 11 can be fitted into each engaging groove 25. Thus, it is possible to achieve a unique effect that the attaching / detaching operation of the moving wheel 15 to / from the side disk 11 is extremely simple. The basic operational effects of the second and third embodiments are the same as those of the first embodiment.

  In each said embodiment, while making the whole raw material of the wheel 15 for a movement into the soft rubber (synthetic resin) with a large expansion | extension rate, it is in the thickness inside circumference direction of the outer periphery part of the outer peripheral part 20 of the core-plate part 23. By embedding a reinforcing material made of a high rigidity material made of metal such that it extends, or by embedding a reinforcing material made of a high rigidity material made of metal so as to extend in the radial direction within the thickness of the lugs 24a, 24b, The rigidity and strength of the outer peripheral side of the moving wheel 15 may be improved.

  As an engaging means for preventing the relative displacement between the side disk 11 and the moving wheel 15, an engaging pin is projected from the disk surface of the side disk 11, and the engaging pin is connected to the hub portion 21 of the moving wheel 15. It may be configured to be engaged with an engagement hole drilled in. The side disk 11 may be formed in a shallow parabolic shape (dish shape).

  The moving wheel 15 of the present invention is integrally formed of a synthetic resin or an elastic material such as synthetic rubber, has a simple structure, and can be formed in a flat shape, thus being lightweight. Further, the moving wheel 15 is formed with at least two engagement grooves 25 for sandwiching the outer peripheral edge of the side disk 11 along the circumferential direction at an appropriate interval. Since the part which comprises the joint groove 25 is comprised so that elastic deformation is possible, the attachment or detachment operation | work of the wheel 15 for a movement with respect to the side disk 11 can also be performed easily.

  Furthermore, since the moving wheel 15 has a diameter larger than the rotation trajectory of the tilling claws 9 and 10 and is attached to the central portion of the side disk 11, it is coaxial with the tilling claws 9 and 10 on the tilling shaft 5. Since the resistance bar 14 does not hit the ground by simply lifting the tip of the handle 6 a little, it is easy to roll the moving wheel 15 without causing the tilling claws 9 and 10 to interfere with the ground. Can be moved.

It is a side view of the management machine which concerns on this invention. It is a front view of the management machine. FIG. 6 is an inner side view of a moving wheel 15. It is the perspective view which looked at the wheel 15 for a movement from the inner side. It is the perspective view which looked at the wheel 15 for a movement from the outer side. (A) is a sectional side view of the moving wheel 15 and the side disk 11, and (B) is an explanatory view showing the attaching operation of the side disk 11 to the engaging groove 25 of the moving wheel 15. It is an inner side view of the moving wheel 15 of the second embodiment. It is an inner side view of the wheel 15 for movement of 3rd Embodiment.

DESCRIPTION OF SYMBOLS 1 Management machine 2 Airframe frame 5 Mission case 6 Handle 7 Plowing shaft 11 Side disk 15 Moving wheel 20, 20 'Outer peripheral part 21 Hub part 22 Notch part 23 Core plate part 24a, 24b Lug 25 Engaging groove 26 Fin piece 27 Passing Hole 29 Engagement pin 30 Engagement hole

Claims (3)

An engine and a mission case are mounted on the fuselage frame, and a handle is extended from the fuselage frame, while tilling claws are attached to the outer periphery of the tillage shaft extending from the mission case to the left and right sides, Is provided with a side disk having a diameter smaller than the rotation trajectory of the tilling claw, and a moving wheel having an outer periphery formed larger in diameter than the rotation trajectory of the tilling claw is detachably attached to each side disk. A management machine
The moving vehicle wheel, a hub portion of the rotation center side portion along the outer surface of the side disk is provided with an outer peripheral portion which is connected integrally to the outer diameter side of the hub portion, the said outer peripheral portion the site spanning the hub portion, so that the outer peripheral edge portion of the side disks spaced suitable intervals along the circumferential direction to form two or more engaging grooves even without squeezing no small, the outer peripheral side Is provided with a fin piece protruding from the center of rotation,
Of the moving wheel , a portion near the center of the diameter including the portion constituting the engagement groove is made of an elastically deformable material ,
In a state where the moving wheel is attached to the side disk, the side disk having an outer peripheral edge portion fitted in the engagement groove is sandwiched between the hub part and the fin piece from both the left and right sides. Yes,
Management machine. The moving wheel is provided with a plurality of cut portions from the outer peripheral portion toward the radial center portion at appropriate intervals along the circumferential direction.
The management machine according to claim 1. The side disk and the moving wheel are provided with engagement means for preventing relative displacement between them in the circumferential direction.
The management machine according to claim 2.

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