JP2004248600A - Tending machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable an operation for attaching or detaching a traveling wheel to be easily carried out even by a tender-eyed old person or the like. <P>SOLUTION: The tending machine is obtained by installing a cylindrical bearing body in the center part of a side cover body, coaxially attaching the bearing body to the terminal part of a tilling shaft, forming an engaging hole in a side cover body, installing a supporting shaft of the traveling wheel in the center part of the traveling wheel formed so as to have a diameter larger than the turning locus of a tilling tine, enabling the supporting shaft of the traveling wheel to be inserted to the bearing body so as to be freely drawn and inserted from an outer side part, and attaching an engaging body to the traveling wheel. The traveling wheel can be freely attached to and detached from the side cover body by inserting/engaging the engaging body in the engaging hole of the side cover body from the outer side part. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a management device.
[0002]
[Prior art]
Conventionally, as one form of management machine, an engine is mounted on the fuselage frame, a transmission case that extends vertically is linked to the engine, and a handle is attached to the upper part of the transmission case, while the engine extends horizontally to the lower part The tilling shaft to be tied was connected in a penetrating state, tilling claws were attached to the outer peripheral surface of the tilling shaft, side cover bodies were attached to the left and right outer ends of the tilling shaft, and moving wheels were attached to the front end of the aircraft frame. (For example, see Patent Document 1).
[0003]
The movable wheel is detachably attached to the front end of the body frame by a connecting pin via a movable wheel support arm.
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 5-55804 [0005]
[Problems to be solved by the invention]
However, in the above-described management machine, the moving wheel is detachably attached by the connecting pin via the moving wheel support arm, but the work of connecting the connecting pin by the connecting pin is complicated for an elderly person with weak eyes, etc. It is necessary to manage the connecting pins so as not to be lost when the moving wheel is removed, but such managing of the connecting pins is also complicated for the elderly.
[0006]
In addition, since the moving wheel is formed with a smaller diameter than the rotation locus of the tilling claw, when moving, the handle is raised so that the tilling claw does not interfere with the ground, and the moving wheel rolls in the same state. This movement is not easy for the operator, especially for the elderly, both mentally and physically.
[0007]
[Means for Solving the Problems]
Therefore, in the present invention, an engine is mounted on a body frame, a transmission case extending vertically is interlocked to the engine, and a handle is attached to an upper portion of the transmission case, and a tilling shaft extending left and right extends at a lower portion. In a penetrating state, the cultivation claw is attached to the outer peripheral surface of the cultivation shaft, and a side cover body is attached to the left and right outer ends of the cultivation shaft. A bearing body is provided, the bearing body is coaxially attached to the end of the cultivation shaft, and a locking hole is formed in the side cover body, while a moving wheel having a diameter larger than the rotation locus of the cultivation claw is provided. A movable wheel support shaft is provided at the center, the movable wheel support shaft can be inserted into and removed from the bearing body from the outside, and a locking body is attached to the moving wheel, and the locking body is attached to a side cover body. Lock To be sealed inserted and engaged from the outer side, there is provided a management apparatus, wherein a moving wheel side cover body was removably attachable.
[0008]
In addition, the present invention is also characterized by the following configurations.
[0009]
(1) A posture changing operation body for changing the posture between the posture in which the locking body is locked in the locking hole and the posture in which the locking body is unlocked from the locking hole is provided.
[0010]
(2) A movable wheel provided with a cylindrical bearing body at the center of the side cover body and attached coaxially to the end of the cultivating shaft while having a diameter larger than the rotation locus of the cultivating claw. A cylindrical movable wheel support shaft is provided at the center of the shaft, and the distal end of the movable wheel support shaft can be freely inserted into and removed from the outer side of the bearing body, and the inner and outer radial portions are respectively inserted into both shafts. A movable wheel can be detachably attached to the side cover body by forming corresponding inner / outer engagement / connection holes, inserting / engaging the engagement / connection body into both inner / outer engagement / connection holes. That you did.
[0011]
(3) A posture change in which the posture is changed between a posture in which the engagement / connection body is inserted and engaged in the inside / outside engagement / connection hole and a posture in which the engagement / connection body is disengaged from the inside / outside engagement / connection hole. The operation body was provided.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
[0013]
That is, the management machine according to the present invention has, as a basic structure, an engine mounted on a body frame, a transmission case extending in the up-down direction is interlocked to the engine, and a handle is attached to an upper portion of the transmission case, A tilling shaft extending in the left-right direction is interlockingly connected to the lower part of the tilling shaft in a penetrating state, tilling claws are attached to the outer peripheral surface of the tilling shaft, and side cover bodies are attached to left and right outer ends of the tilling shaft.
[0014]
As a characteristic structure, a cylindrical bearing body is provided at the center of the side cover body, and the bearing body is coaxially attached to the end of the tilling shaft, and a locking hole is formed in the side cover body. A moving wheel support shaft is provided at the center of the moving wheel formed to have a diameter larger than the rotation locus of the tilling claw, and the moving wheel support shaft can be freely inserted into and removed from the outer side of the bearing body. A locking body is attached to the wheel, and the locking body is inserted and locked into the locking hole of the side cover body from the outside, so that the movable wheel can be detachably mounted on the side cover body.
[0015]
In addition, there is provided a posture changing operation body for changing the posture between the posture in which the locking body is locked in the locking hole and the posture in which the locking is released from the locking hole.
[0016]
In addition, as a characteristic structure, a cylindrical bearing body is provided at the center of the side cover body, and the bearing body is coaxially attached to the end of the cultivation shaft, while having a diameter larger than the rotation locus of the cultivation claw. A cylindrical movable wheel support shaft is provided at the center of the formed movable wheel, and the distal end of the movable wheel support shaft can be freely inserted into and removed from the outside of the bearing body. The inner and outer engagement / connection holes are formed on the inner and outer sides, and the engagement / connection body is inserted and engaged in both inner / outer engagement / connection holes. It can be attached to.
[0017]
In addition, a posture changing operation for changing the posture between the posture in which the engagement / connection body is inserted and engaged in the inside / outside engagement / connection hole and the posture in which the engagement / connection body is disengaged from the inside / outside engagement / connection hole. Body is provided.
[0018]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0019]
A shown in FIGS. 1 and 2 is a management machine according to the present invention. The management machine A has an engine E mounted on a body frame 1 and extends vertically in the engine E via a transmission case 2. The transmission case 3 is interlockingly connected, and the base end of the handle 4 is attached to the upper part of the transmission case 3, while the tilling shaft 5 extending in the left and right direction is interlockingly connected to the lower part of the transmission case 3 in a penetrating state. An inner pawl 6 and an outer pawl 7 as tilling claws are attached to the outer peripheral surface of the shaft 5, and side cover bodies 8, 8 formed in a parabolic antenna shape are respectively attached to left and right outer ends of the tilling shaft 5. I have. 9 is a fuel tank, 10 is a rotary cover, and 11 is a resistance bar.
[0020]
As shown in FIGS. 1 and 2, the movable wheels 12, 12 having a diameter larger than the rotation trajectory of the inner and outer pawls 6, 7 are attached to and detached from the side cover bodies 8, 8. It is detachably attached via means 13.
[0021]
The attachment / detachment means 13 as the first embodiment will be described below with reference to FIGS. 3 to 5, and thereafter, the attachment / detachment means as the second to fourth embodiments with reference to FIGS. 13 will be described.
[0022]
[Attachment / detachment means as first embodiment]
As shown in FIGS. 3 and 4, the attaching / detaching means 13 according to the first embodiment is provided with a cylindrical bearing body 20 in an orthogonal state at the center of a side cover body 8 formed in a parabolic antenna shape. The body 20 is coaxially attached to the end of the tilling shaft 5, and a plurality of (two in this embodiment) locking holes 21, 21 are provided in the side cover body 8 in a point-symmetrical position around the bearing body 20. On the other hand, a movable wheel support shaft 23 is attached to the center of the movable wheel 12 via a support shaft mounting body 22 so that the movable wheel support shaft 23 can be freely inserted into and removed from the bearing body 20 from the outside. At the same time, a locking body 25 is attached to the moving wheel 12 via the posture changing operation body 24 so that the locking body 25 is inserted and locked into the locking holes 21 and 21 of the side cover body 8 from outside. Make up.
[0023]
As shown in FIGS. 4 and 5, the support shaft mounting body 22 includes a cylindrical mounting piece 22a whose axis is oriented in the left-right direction, and inner and outer disks attached to inner and outer ends of the cylindrical mounting piece 22a, respectively. It is formed from the mounting pieces 22b and 22c.
[0024]
The inner disk-shaped attachment piece 22b has a support shaft insertion hole 26 for inserting and supporting the intermediate portion 23b of the movable wheel support shaft 23 at the center portion, and also has an upper and lower portion which will be described later on the outer periphery. A pair of upper and lower inner cutout grooves 27, 27 for guiding the pieces 25a, 25a to expand and contract are formed at point-symmetrical positions around the support shaft insertion hole 26.
[0025]
The outer disc-shaped mounting piece 22c has a base end insertion hole 28 for inserting and supporting the base end 23a of the movable wheel support shaft 23 at the center, and a vertical sliding part to be described later on the outer periphery. A pair of upper and lower outer cutout grooves 29, 29 for slidingly guiding the moving pieces 24a, 24a are formed at point-symmetric positions about the support shaft insertion hole 26.
[0026]
Here, the bottom portion 27a of the inner cutout groove 27 is formed at a position separated from the peripheral surface of the movable wheel support shaft 23 by a fixed width, while the bottom portion 29a of the outer cutout groove 29 is formed around the periphery of the movable wheel support shaft 23. It is formed so as to be flush with the surface.
[0027]
The movable wheel support shaft 23 has a base end portion 23a formed to have a small diameter with a step, and the outer diameter of the base end portion 23a is fixed by being inserted into the base end portion insertion hole 28 of the outer disk-shaped mounting piece 22c. On the other hand, the intermediate portion 23b is inserted and supported in the support shaft insertion hole 26 of the inner disk-shaped mounting piece 22b, and the distal end portion 23c is formed to have a small stepped diameter, and the outer diameter of the distal end portion 23c is cylindrical. Is formed to have substantially the same diameter as the inner diameter of the bearing body 20 of FIG.
[0028]
In this manner, the distal end 23c of the movable wheel support shaft 23 attached to the center portion of the movable wheel 12 via the support shaft attachment body 22 is inserted into the bearing body 20 from the outside, so that the same bearing body 20 is inserted. The stepped end surface 23d of the distal end portion 23c is brought into contact with the end surface of the movable wheel supporting shaft 23 so that the inward movement of the movable wheel support shaft 23 can be restricted.
[0029]
As shown in FIGS. 4 and 5, the posture changing operation body 24 includes upper and lower sliding pieces that slide in the axial direction along the bottoms 29 a and 29 a of the outer cutout grooves 29 and the peripheral surface of the movable wheel support shaft 23. 24a, 24a and a connecting piece 24b for connecting the outer ends of the upper and lower sliding pieces 24a, 24a to each other to form a U-shape in a side view.
[0030]
The locking body 25 is provided with a pair of upper and lower locking pieces 25a, 25a extending from inner ends of upper and lower sliding pieces 24a, 24a of the posture changing operation body 24 and integrally formed. The stopper pieces 25a, 25a protrude the leading end locking pieces 25b, 25b outwardly through the inner cutout grooves 27, 27.
[0031]
Moreover, the locking body 25 and the posture changing operation body 24 are integrally formed of an elastic material, and the locking pieces 25a, 25a are moved in the direction in which the tip locking main pieces 25b, 25b approach the moving wheel support shaft 23 side. Elastic biasing.
[0032]
In this way, the locking pieces 25a, 25a are constantly brought into pressure contact with the bottom portions 27a, 27a of the inner cutout grooves 27, 27 by the elastic urging force (in contact with the pressed state), and the posture changing operation is performed. When the body 24 is slid inward (toward the inner disk-shaped mounting piece 22b), as shown by the dashed line in FIG. When the sliding operation is performed in the outward direction (the outer disk-shaped mounting piece 22c side), as shown by the solid line in FIG. 4, both the locking pieces 25a are reduced in diameter.
[0033]
Then, the posture changing operation body 24 is slid inward, and the connecting piece 24b of the posture changing operation body 24 is brought into contact with the end face of the base end portion 23a of the movable wheel support shaft 23, thereby expanding the posture. The end locking main pieces 25b, 25b of the diameter locking pieces 25a, 25a match the locking holes 21, 21 formed in the side cover body 8.
[0034]
Therefore, in this state, when the distal end portion 23c of the movable wheel support shaft 23 is inserted from the outside into the bearing body 20, and the step end surface 23d of the distal end portion 23c abuts on the end surface of the bearing body 20, The end locking main pieces 25b, 25b are inserted into the locking holes 21, 21 of the side cover body 8.
[0035]
When the posture changing operation body 24 is slid outward, the locking pieces 25a, 25a are gradually reduced in diameter, and the leading end locking pieces 25b, 25b are locked into the locking holes 21, 21 of the side cover body 8. Is locked.
[0036]
That is, by the sliding operation of the posture changing operation body 24 in the inward direction, the leading end locking pieces 25b, 25b can be brought into the posture (a) in which they are locked in the locking holes 21 and 21, and the posture changing operation can be performed. By the sliding operation of the body 24 in the outward direction, the leading end locking pieces 25b, 25b can be brought into the posture (b) in which the locking is released from the locking holes 21, 21.
[0037]
Further, in this embodiment, a lock body 30 for locking the posture changing operation body 24 is provided on the outer disc-shaped mounting piece 22c, and the lock body 30 is provided on the outer disc-shaped mounting piece 22c with the support piece 30a. Is pivotally supported via a lock body support shaft 31 whose axis is oriented in the front-rear direction, and a lock main piece 30b is attached to the distal end of the support piece 30a, and the lock main piece 30b is connected to the base end of the movable wheel support shaft 23. The lock position interposed between the end face of the portion 23a and the connecting piece 24b of the posture changing operation body 24, and the lock main piece 30b is connected to the end face of the base end 23a of the moving wheel support shaft 23 and the posture changing operation body 24. It can move forward and backward and rotate between the connecting piece 24b and the unlocked position where it is detached.
[0038]
The left and right widths of the lock main piece 30b are determined by the connecting piece 24b in the position (a) in which the front end lock main pieces 25b and 25b are locked in the locking holes 21 and 21, and the base end of the movable wheel support shaft 23. By making the space of the space 33 formed between the end surface of the space 23a and the lock main piece 30b into the space 33, the posture changing operation body 24 can be brought into the locked state. I have to.
[0039]
Therefore, the state where the movable wheel 12 is attached to the side cover body 8 can be maintained.
[0040]
[Attachment / detachment means as second embodiment]
The attachment / detachment means 13 according to the second embodiment has the same basic structure as the attachment / detachment means 13 according to the first embodiment, but differs greatly in the configuration of the posture changing operation body 24 and the locking body 25.
[0041]
That is, as shown in FIGS. 6 and 7, the posture changing operation body 24 extends in the left and right direction into the lower inner and outer cutout grooves 27 and 29 formed in the inner and outer disk-shaped mounting pieces 22b and 22c, respectively. The left and right extension pieces 24c are penetrated and extended downward from the inner ends of the left and right extension pieces 24c to form the downward extension pieces 24d, while being higher than the outer end sections of the left and right extension pieces 24c. To form an upwardly extending piece 24e, and to extend toward the upper outer cutout groove 29 to form an inwardly extending piece 24f.
[0042]
In this way, the left and right extension pieces 24c are slidable in the left and right directions on the bottom portions 27a and 29a of the lower inner and outer cutout grooves 27 and 29, and the lower extension pieces 24d are pulled out outward. While functioning as a stop piece, the upwardly extending piece 24e functions as an inward sliding restriction piece, and the inwardly extending piece 24f functions as an expanding / contracting piece for a locking piece 25a described later.
[0043]
Here, the bottom portion 29a of the outer notch groove 29 according to the present embodiment is formed at a position separated from the peripheral surface of the movable wheel support shaft 23 by a fixed width, and the inward extension piece 24f is formed on the bottom portion 29a. Slide in the left-right direction.
[0044]
The locking body 25 attaches the base end of a locking piece 25a formed by extending in the left-right direction with an elastic material to the base outer peripheral surface of the movable wheel support shaft 23 with a screw 32, and attaches the distal locking main piece 25b. It protrudes outside from the upper inner cutout groove 27.
[0045]
Moreover, the locking piece 25a is elastically biased in a direction in which the tip locking main piece 25b is separated from the outer peripheral surface of the movable wheel support shaft 23.
[0046]
In this manner, the locking piece 25a is brought into pressure contact with the inner edge of the tubular mounting piece 22a (abutted in the pressed state) by its elastic urging force, as shown by the dashed line in FIG. When the posture changing operation body 24 is slid inward (toward the inner disk-shaped mounting piece 22b), as shown by the solid line in FIG. When the sliding operation is performed in the direction (toward the outer disk-shaped mounting piece 22c), the diameter of the locking piece 25a is increased.
[0047]
Then, the posture changing operation body 24 is slid inward, and the upwardly extending piece 24 e of the posture changing operation body 24 is brought into contact with the end face of the base end 23 a of the moving wheel support shaft 23, and the state is changed. As shown by a dashed line in FIG. 7, the distal end locking piece 25b of the reduced diameter locking piece 25a is configured to code to the upper locking hole 21 formed in the side cover body 8.
[0048]
Therefore, in this state, when the distal end portion 23c of the movable wheel support shaft 23 is inserted from the outside into the bearing body 20, and the step end surface 23d of the distal end portion 23c abuts on the end surface of the bearing body 20, As shown by a dashed line in FIG. 7, the end locking main pieces 25 b, 25 b are inserted into the locking holes 21, 21 of the side cover body 8.
[0049]
Then, when the posture changing operation body 24 is slid outward, the locking piece 25a expands in diameter by its own elastic biasing force, as shown by the solid line in FIG. The cover 8 is locked in the locking hole 21.
[0050]
That is, by the sliding operation of the posture changing operation body 24 in the outward direction, the posture (a) in which the tip locking main piece 25b is locked in the locking hole 21 can be achieved, and the posture changing operation body 24 By the sliding operation in the direction, the leading end locking piece 25b can be brought into the posture (b) in which the locking is released from the locking hole 21.
[0051]
[Attachment / detachment means as third embodiment]
As shown in FIGS. 8 to 10, the attaching / detaching means 13 according to the third embodiment is provided with a cylindrical bearing body 20 at a central portion of a side cover body 8 formed in a parabolic antenna shape in an orthogonal state. 20 is attached coaxially to the end of the cultivating shaft 5, while a moving wheel support shaft 23 is attached to the center of the moving wheel 12 via a shaft mounting body 22. Inner / outer engagement / connection holes 40 and 41 are formed in the shafts 23 and 20 so as to correspond to the inner and outer sides in the radial direction, respectively. The engagement / connection body 42 is inserted into and engaged with the outer engagement / connection holes 40 and 41 via the posture changing operation body 24.
[0052]
As shown in FIGS. 8 to 10, the support shaft mounting body 22 includes a cylindrical mounting piece 22 a whose axis is oriented in the left-right direction, and inner and outer disks attached to inner and outer ends of the cylindrical mounting piece 22 a, respectively. It is formed from the mounting pieces 22b and 22c.
[0053]
The inner disk-shaped mounting piece 22b has a support shaft insertion hole 26 formed at the center thereof for inserting and supporting the intermediate portion 23b of the movable wheel support shaft 23.
[0054]
In addition, the outer disk-shaped mounting piece 22c has a base end insertion hole 28 for inserting and supporting the base end 23a of the movable wheel support shaft 23 at the center.
[0055]
The movable wheel support shaft 23 is formed in a tubular shape extending in the left-right direction. The base end portion 23a is formed to have a small diameter with a step, and the outer diameter of the base end portion 23a is set to the outer disk-shaped mounting piece 22c. Of the inner disk-shaped mounting piece 22b, while the intermediate portion 23b is inserted and supported in the support shaft insertion hole 26 of the inner disk-shaped mounting piece 22b, and the distal end portion 23c is formed into a stepped small diameter. At the same time, the outer diameter of the tip portion 23c is formed to be substantially the same as the inner diameter of the cylindrical bearing body 20.
[0056]
The above-mentioned inside engagement / connection hole 40 is formed in the middle part of the distal end portion 23c.
[0057]
In this manner, the distal end 23c of the movable wheel support shaft 23 attached to the center portion of the movable wheel 12 via the support shaft attachment body 22 is inserted into the bearing body 20 from the outside, so that the same bearing body 20 is inserted. The stepped end surface 23d of the distal end portion 23c is brought into contact with the end surface of the movable wheel support shaft 23 so that the inward movement of the movable wheel support shaft 23 can be regulated. The inner engagement / connection hole 40 and the outer engagement / connection hole 41 formed in the middle part of the bearing body 20 can be matched.
[0058]
The posture changing operation body 24 is formed in a rod shape extending in the left-right direction, is rotatably inserted into the movable wheel support shaft 23, and has a base end 24 g outside the base end of the movable wheel support shaft 23. The end portion 24h is flush with the end portion of the movable wheel support shaft 23 while protruding toward the front to form a knob portion for rotating operation.
[0059]
Moreover, an eccentric cam-shaped groove 43 is formed along the peripheral surface at the distal end of the posture changing operation body 24 and at the position of the outer peripheral surface corresponding to the inner / outer engagement / connection holes 40 and 41 described above. The engaging / connecting body 42 is arranged in the cam-shaped groove 43.
[0060]
In this manner, by rotating the posture changing operation body 24 about its axis, the upper part of the engagement / connection body 42 is inserted into the inside / outside engagement / connection holes 40 and 41 as shown in FIG. By inserting and engaging the posture (c), and by rotating the posture changing operation body 24 around its axis in the opposite direction to the above, the upper part of the engagement / connection body 42 is As shown in FIG. 8, the posture can be changed to the posture (d) disengaged from the inner / outer engagement / connection holes 40, 41.
[0061]
In the present embodiment, a locking pin 45 for locking the rotation of the posture changing operation body 24 is protruded from the outer disk-shaped mounting piece 22c, while the base end of the posture changing operation body 24 is provided. The locking body 30 is constituted by providing a locking piece 46 for locking the lock body and the locking piece 46 for locking is locked to a locking pin 45 for locking, thereby restricting the rotation of the posture changing operation body 24. Have to be able to.
[0062]
In this manner, as shown in FIG. 9, the locking engagement piece 42 is inserted and engaged in the inner / outer engagement / connection holes 40 and 41 as shown in FIG. 9. By locking the lock 46 to the lock locking pin 45, the posture changing operation body 24 can be brought into the locked state.
[0063]
Therefore, the state where the movable wheel 12 is attached to the side cover body 8 can be maintained.
[0064]
[Attachment / detachment means as fourth embodiment]
The attachment / detachment means 13 according to the fourth embodiment has the same basic structure as the attachment / detachment means 13 according to the third embodiment, but differs in the configuration of the posture changing operation body 24.
[0065]
That is, as shown in FIGS. 11 and 12, the posture changing operation body 24 is formed in a rod shape extending in the left-right direction, and is inserted into the movable wheel support shaft 23 so as to be able to slide forward and backward, and has a base end portion 24g. Is projected outwardly from the base end of the movable wheel support shaft 23 to form a knob for sliding operation, while the distal end 24h is flush with the distal end of the movable wheel support shaft 23.
[0066]
In addition, a cam-shaped recess 47 is formed at the distal end of the posture changing operation body 24 and at a position on the outer peripheral surface corresponding to the inner / outer engagement / connection holes 40 and 41 described above. The engaging / connecting body 42 is arranged, and the upper portion of the engaging / connecting body 42 is inserted and engaged in the inner / outer engaging / connecting holes 40 and 41 in the cam-shaped recess 47. ) And the concave surface for the disengagement posture to be in the posture (d) in which the engagement / connection body 42 is disengaged from the inner / outer engagement / connection holes 40 and 41. 47b and a connection inclined surface 47c connecting the two concave surfaces 47a and 47b are formed.
[0067]
Further, a spring housing space 48 is formed between the inner peripheral surface of the movable wheel support shaft 23 and the outer peripheral surface of the posture changing operation body 24, and a pressing spring 49 is housed in the spring housing space 48 to The posture changing operation body 24 is pressed outward by the elastic urging force of the spring 49.
[0068]
In FIGS. 11 and 12, reference numeral 50 denotes a retaining pin pierced through the moving wheel support shaft 23 and the base end of the posture changing operation body 24. The posture changing operation body 24 can be slid forward and backward within the range of the long hole 51 by penetrating through an elongated hole 51 formed in the end portion and extending in the left-right direction. Is prevented from falling to the outside.
[0069]
In this manner, the base end of the movable wheel support shaft 23 is gripped, and the movable wheel support shaft 23 is slid inward to advance in the axial direction against the elastic biasing force of the pressing spring 49. As a result, the engagement / connection body 42 is disengaged from the inner / outer engagement / connection holes 40 and 41 via the engagement-recess attitude concave surface 47b of the cam-shaped concave 47, as shown in FIG. In this state, the distal end portion 23c of the moving wheel support shaft 23 attached to the center portion of the moving wheel 12 via the support shaft mounting body 22 is placed in the bearing body 20 in the outward direction. And the stepped end surface 23d of the distal end portion 23c abuts on the end surface of the bearing body 20, whereby the inward movement of the movable wheel support shaft 23 can be restricted.
[0070]
In this state, the inner engagement / connection hole 40 formed in the distal end portion 23c and the outer engagement / connection hole 41 formed in the middle of the bearing body 20 coincide with each other. When the hand holding the proximal end of the support shaft 23 is released, the posture changing operation body 24 is slid in the axial direction by the elastic biasing force of the pressing spring 49, and the upper part of the engagement / connection body 42 is moved. As shown in FIG. 12, the position (c) is inserted and engaged in the inner / outer engagement / connection holes 40 and 41 via the insertion / engagement posture concave surface 47a of the cam-shaped recess 47. Can be.
[0071]
Therefore, the state where the movable wheel 12 is attached to the side cover body 8 can be maintained.
[0072]
Although the procedure for mounting the attaching / detaching means 13 according to the first to fourth embodiments has been described above, the procedure for detaching may naturally follow the procedure opposite to the procedure for attaching. Good.
[0073]
【The invention's effect】
(1) According to the first aspect of the present invention, a cylindrical bearing body is provided at the center of the side cover body, and the bearing body is coaxially attached to the end of the tilling shaft and locked to the side cover body. A movable wheel support shaft is provided at the center of the movable wheel formed with a diameter larger than the rotation locus of the tilling claw while forming a hole, and the movable wheel support shaft can be freely inserted and removed from the outer side of the bearing body. At the same time, attach the locking body to the moving wheel, insert and lock the locking body from the outside in the locking hole of the side cover body, and attach the moving wheel to the side cover body detachably. I have.
[0074]
In this way, the moving wheel support shaft provided at the center of the moving wheel is inserted from the outside into the bearing provided at the center of the side cover body, and the locking body attached to the moving wheel is attached to the side cover body. The moving wheel can be attached to the side cover body simply by inserting and locking from the outside into the locking hole formed in the above, so that such elderly people with weak eyes can easily perform the mounting work of such moving wheel. it can.
[0075]
Moreover, since the connecting pins and the like are not used, there is no need to manage the connecting pins and the like.
[0076]
Furthermore, since the moving wheel is formed with a diameter larger than the rotation locus of the tilling claw and is attached to the center of the side cover body, it can be attached to the tilling axis coaxially with the tilling claw, With a little lifting, the moving wheel can be easily moved while rolling the moving wheel without interfering with the ground.
[0077]
(2) According to the second aspect of the present invention, the posture changing operation body for changing the posture of the locking body between the posture locked in the locking hole and the posture unlocked from the locking hole is provided. .
[0078]
In this manner, by operating the posture changing operation body, the posture of the locking body can be easily changed between the posture locked in the locking hole and the posture released from the locking hole. In addition, the work of attaching the movable wheel to the side cover body can be performed more easily.
[0079]
(3) According to the third aspect of the present invention, a cylindrical bearing body is provided at the center of the side cover body, and the bearing body is attached coaxially to the end of the tilling shaft, while the rotation locus of the tilling claw. A cylindrical movable wheel support shaft is provided at the center of the movable wheel formed to have a larger diameter than that of the movable wheel, and the distal end of the movable wheel support shaft can be freely inserted into and removed from the outside of the bearing body. The inner and outer engagement / connection holes corresponding to the inner and outer sides in the radial direction are formed respectively, and the engagement / connection body is inserted / engaged in both the inner / outside engagement / connection holes to form the side cover body. The movable wheel can be attached detachably.
[0080]
In this way, the distal end of the moving wheel support shaft provided at the center of the moving wheel is inserted from the outside into the bearing provided at the center of the side cover body, and the inner and outer coupling members formed on both shafts are respectively provided. The moving wheel can be attached to the side cover body simply by matching the connecting / connecting hole to the inside / outside in the radial direction, and inserting / engaging the engaging / connecting body into both inside / outside engaging / connecting holes. Therefore, the work of attaching the moving wheel can be easily performed even by an elderly person with weak eyes.
[0081]
Moreover, since the connecting pins and the like are not used, there is no need to manage the connecting pins and the like.
[0082]
Furthermore, since the moving wheel is formed with a diameter larger than the rotation locus of the tilling claw and is attached to the center of the side cover body, it can be attached to the tilling axis coaxially with the tilling claw, With a little lifting, the moving wheel can be easily moved while rolling the moving wheel without interfering with the ground.
[0083]
(4) According to the fourth aspect of the present invention, the engagement / connection body is inserted and engaged in the inner / outer engagement / connection hole, and the engagement / disconnection is released from the inner / outside engagement / connection hole. And a posture changing operation body for changing the posture to the changed posture.
[0084]
By operating the posture changing operation body in this manner, the engagement / connection body is inserted / engaged into the inside / outside engagement / connection hole, and the posture is changed from the inside / outside engagement / connection hole. Since the posture can be easily changed to the posture in which the engagement has been released, the operation of attaching the movable wheel to the side cover body can be performed even more easily.
[Brief description of the drawings]
FIG. 1 is a side view of a management device according to the present invention.
FIG. 2 is a front view of the management machine.
FIG. 3 is a side view of a side cover body.
FIG. 4 is an explanatory sectional front view of the attaching / detaching means as the first embodiment.
FIG. 5 is an explanatory side view of the attaching / detaching means.
FIG. 6 is a cross-sectional front explanatory view in a detached state of the attaching / detaching means as the second embodiment.
FIG. 7 is an explanatory sectional front view of the attachment / detachment unit in a mounted state.
FIG. 8 is a cross-sectional front explanatory view in a detached state of the attaching / detaching means as the third embodiment.
FIG. 9 is an explanatory sectional front view of the attachment / detachment unit in a mounted state.
FIG. 10 is a side view of the attaching / detaching means.
FIG. 11 is a cross-sectional front explanatory view in a detached state of the attaching / detaching means as the fourth embodiment.
FIG. 12 is a sectional front view of the attachment / detachment means in a mounted state.
[Explanation of symbols]
A Management machine 1 Airframe 2 Transmission case 3 Transmission case 4 Handle 5 Tilling shaft

Claims (4)

The engine is mounted on the fuselage frame, and the transmission case that extends vertically is linked to the engine, and the handle is attached to the upper part of the transmission case, while the tilling shaft that extends left and right is linked to the lower part of the transmission case. In addition to attaching a cultivating claw to the outer peripheral surface of the cultivating shaft, a management machine with side cover bodies attached to the left and right outer ends
A cylindrical bearing body is provided at the center of the side cover body, and the bearing body is coaxially attached to the end of the tilling shaft, and a locking hole is formed in the side cover body.
A movable wheel support shaft is provided at the center of the movable wheel formed to have a diameter larger than the rotation locus of the tilling claw, and the movable wheel support shaft can be inserted into and removed from the bearing body from the outside so as to be freely inserted and removed. And a locking wheel is detachably inserted into a locking hole of the side cover body from the outside, and the movable wheel can be detachably mounted on the side cover body. Management machine. 2. The management machine according to claim 1, further comprising a posture changing operation body for changing a posture of the locking body between a posture locked in the locking hole and a posture released from the locking hole. The engine is mounted on the fuselage frame, and the transmission case that extends vertically is linked to the engine, and the handle is attached to the upper part of the transmission case, while the tilling shaft that extends left and right is linked to the lower part of the transmission case. In addition to attaching a cultivating claw to the outer peripheral surface of the cultivating shaft, a management machine with side cover bodies attached to the left and right outer ends
A cylindrical bearing body is provided at the center of the side cover body, and the bearing body is coaxially attached to the end of the cultivation shaft,
A cylindrical moving wheel support shaft is provided at the center of the moving wheel formed with a diameter larger than the rotation locus of the tilling claw, and the tip of the moving wheel support shaft can be freely inserted and removed from the outside of the bearing inside the bearing. At the same time, inner and outer engagement / connection holes corresponding to the inner and outer sides in the radial direction are formed on both shafts, and the engagement / connection body is inserted / engaged in the both inner / outer engagement / connection holes. And a movable wheel can be detachably attached to the side cover body. A posture changing operation body for changing the posture between the engagement / connection body and the posture inserted / engaged in the inside / outside engagement / connection hole and the posture disengaged from the inside / outside engagement / connection hole. The management device according to claim 3, wherein the management device is provided.

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