JP2010264922A - Wheel for field work machine, field work machine and riding grooving machine allowing running on road - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an epoch-making wheel for a field work machine, the field machine and a riding grooving machine allowing traveling on a road excellently traveling even on the mud of a field as performed conventionally, capable of traveling even on a normal road, scarcely being wobbled, almost free from being damaged, and durable. <P>SOLUTION: In the wheel for a field work machine capable of traveling on the road in which a plurality of mud scraping plates 23 are arranged at the outer peripheral part of the wheel at intervals in the peripheral direction, the mud scraping plates 23 are arranged at an outer periphery forming plate 24 with its plate edge forming the outer peripheral edge in a state of projecting in a direction crossing with the direction of the plate surface with the edges not projecting beyond the outer peripheral edge, and uneven edges 25 that does not form projections 26 acute are formed at the outer peripheral edge of the outer periphery forming plate 24 between the mud scraping plates 23. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a work machine that performs work in a field such as a rice field or a field, for example, a wheel for a field work machine such as a grooving machine, and a field work machine using the wheel.

  For example, when performing rice drying after rice planting, the wheels of field work machines such as grooving machines that perform grooving work to form grooves in the rice field to improve drainage of rice fields are still watered. In order to run in paddy fields, mud mud, or soft mud even in grooving work after rice harvesting, a configuration with a large number of metal mud scrapers on the outer periphery that perform watering and mudging It is said.

  In other words, the wheels are completely different from rubber tires traveling on normal roads, and the wide plate-like mud scraper like a webbing is spaced around the outer periphery of the wheel formed of a metal plate or pipe material in the circumferential direction. A large number of plate parts are projected toward the outer periphery, and the scraper parts are scraped into the mud one after another by rotating the wheels, and the mud is scraped backwards. The paddy field and mud mud or the ground is soft. Even in this case, it is possible to travel well by providing a large number of the mudboard portions (see, for example, Patent Document 1).

  However, since such a mud board is projected on the outer periphery, if you try to drive on a normal road (a road with a hard road without muddyness) as it is, you will not be able to drive and you will try to drive forcibly. In this case, not only will rattling and noise occur, but the mud will also be damaged.

  Further, simply providing the mud board part so as not to protrude to the outer periphery makes it easy to slip between the mud board parts and makes it difficult to travel, even though it can achieve a watering action or a mud action.

  Especially in muddy mud, it cannot run well. For example, muddy rice fields usually have a muddy layer of plowed soil up to a depth of 10-15 cm. There is no change, and under this 10-15 cm mud layer there is a bedrock part such as hard clay layer which is not cultivated, and it slips on this and cannot run well.

JP 2006-176119 A

  The present invention can run well in paddy and muddy paddy mud as well as in soft and soft soil as before, and can run well even if there is a rock part, and it can run well on ordinary roads. An object of the present invention is to provide a groundbreaking wheel for a field work machine, a field work machine, and a riding grooving machine that are capable of traveling on a road with little play and little damage and damage.

  In particular, an object of the present invention is to provide an extremely practical wheel and a riding field working machine that can ride on a road to the field in a riding field working machine.

  The gist of the present invention will be described with reference to the accompanying drawings.

  In a field work machine wheel provided with a plurality of mudboard portions 23 in the circumferential direction on the outer periphery of the wheel, the outer periphery forming plate portion 24 with the plate edge as the outer periphery protrudes in a direction intersecting the plate surface direction. The scraper plate portion 23 is provided in a state in which the tip portion does not protrude from the outer peripheral edge, and an uneven edge 25 that does not sharpen the convex portion 26 is formed on the outer peripheral edge of the outer peripheral forming plate portion 24 between the scraper plate portions 23. The present invention relates to a wheel for a field work machine capable of traveling on a road.

  Further, between the scraping plate portions 23 provided with a gap in the circumferential direction, the outer diameter size is substantially equal to the outer diameter size of the tip of the scraping plate portion 23 without forming a valley portion having a short outer diameter. The road according to claim 1, wherein the outer peripheral forming plate portion 24 is continuously provided, and the uneven edge 25 is formed on an outer peripheral edge of the outer peripheral forming plate portion 24 between the mud plate portions 23. The present invention relates to a field work machine wheel.

  Further, the uneven edge 25 is a U-shaped uneven edge 25 in which a U-shaped convex part 26 having a flat or arcuate tip edge is repeated at intervals. The present invention relates to a wheel for a field work machine capable of traveling on a road according to item 1.

  4. The plate-like mud board portion 23 that projects in a protruding state on the plate surface of the outer periphery forming plate portion 24 is provided so as to protrude. 5. The present invention relates to a field work machine wheel capable of traveling on a road.

  5. The road according to claim 1, wherein the outer periphery forming plate portion 24 has a disc shape or a donut plate shape, and is formed by superposing a plurality of metal plates 27. The present invention relates to a wheel for a farm work machine that can travel.

  The field work machine according to any one of claims 1 to 5, wherein at least a wheel serving as a drive wheel of the field work machine is the wheel for a field work machine capable of traveling on a road according to any one of claims 1 to 5. It is.

  Further, a self-steerable self-steerable vehicle provided with a grooved portion 7 for forming a groove 6 in a farm field 5 in a riding traveling portion 4 provided in a riding portion 3 with a front wheel 1 to be steered and at least a rear wheel 2 as a driving wheel. The traveling riding grooving machine is characterized in that at least the rear wheel 2 serving as a driving wheel is a wheel for a field work machine capable of traveling on a road according to any one of claims 1 to 5. The present invention relates to a riding grooving machine according to claim 6.

  Since the present invention is configured as described above, it can run well even in mud of paddy fields and muddy rice fields as usual, and soft and soft soil, even if there is a rock part, it can run well and it can run well. The road working machine wheel, the field working machine, and the riding grooving machine are capable of traveling on ordinary roads, have little backlash and are not easily damaged or damaged, and are capable of traveling on innovative roads.

  In particular, in a field working machine that travels on a ride, a wheel and a riding field work machine that are extremely practical and capable of riding on a road to the field are obtained.

  Further, in the inventions according to claims 2 to 5, the action and effect of the present invention can be reliably and satisfactorily exhibited, and the wheel for a farm work machine capable of traveling on an extremely excellent road can be obtained.

  In particular, in the invention according to claim 5, the field work machine capable of traveling on a very innovative road that has a simple structure and is extremely improved in strength, can be driven on a normal paved road, and has excellent durability. Wheel.

  Moreover, in invention of Claim 6, 7, it becomes an agricultural field working machine and a riding grooving machine which show the said effect | action and effect.

It is a perspective view which shows the riding grooving machine of a present Example. It is a perspective view from another angle which shows the riding grooving machine of a present Example. It is a side view which shows the riding grooving machine of a present Example. It is a description perspective view which shows the drive mechanism of the riding grooving machine of a present Example, and the transmission mechanism of a rotational drive shaft. It is a partial expansion disassembled perspective view which shows the drive and free switching mechanism of the riding grooving machine of a present Example. It is the elements on larger scale which decomposed | disassembled the locking pin which shows the drive and free switching mechanism of the riding grooving machine of a present Example. It is a side view which shows the drive / free switching mechanism and the right rear wheel of the riding grooving machine of the present embodiment. It is a disassembled perspective view which shows a present Example (right rear wheel). It is a partial expanded side view which shows a present Example (front wheel, rear wheel). It is a partial expansion perspective view which shows a present Example (front wheel, rear wheel). It is a partial expanded front sectional view of the present embodiment (front wheel, rear wheel). It is a partial expanded explanatory perspective view which shows the raising / lowering mechanism of a groove cutting part, and a left-right rocking | fluctuation structure of the riding grooving machine of a present Example. FIG. 5 shows a shaft attachment structure of a lifting shaft for riding on a riding traveling portion (mounting mount) and a shaft attachment structure of a mounting portion (grooving portion) on a lifting shaft for the riding grooving machine of the present embodiment. It is a partial expansion exploded perspective view. It is a partial expanded explanatory side view which shows the use condition at the time of the grooving of the groove part of the riding grooving machine of a present Example. It is a partial expanded explanatory side view which shows the raising / retreating state of the groove part of the riding groove machine of a present Example. It is a partial expansion explanatory top view which shows the right-and-left rocking | fluctuation structure of the groove part of the riding groove machine of a present Example. FIG. 5 is a partially enlarged explanatory plan view showing a state in which the grooving portion swings during turning while the riding grooving machine of the present embodiment is in use.

  Embodiments of the present invention that are considered suitable (how to carry out the invention) will be briefly described with reference to the drawings, illustrating the operation of the present invention.

  The mud board portion 23 is rotated by the rotation of the wheel, and the mud board portion 23 sequentially scrapes the mud into the mud and feeds the mud backward, so that it can run well without idling.

  Each mud board portion 23 does not protrude to the outer periphery, and the mud plate portions 23 are connected by an outer circumference forming plate portion 24.

  That is, the scraper plate portion 23 is not provided in the outer peripheral formation plate portion 24 having the plate edge as the outer periphery so as to protrude from the outer periphery to the outer periphery. In other words, it protrudes in the direction of the plate surface and performs a water scuffing action or a mud scavenging action, but does not protrude in the outer peripheral direction, so that it can run without rattling on a coastal road or a normal paved road.

  The mud board portions 23 are connected to each other by an outer periphery forming plate portion 24, and an uneven edge 25 is formed on the outer peripheral edge which is a plate edge of the outer periphery forming plate portion 24. Convex outer edge) 26 is cut into the mud (cut), and even if there is a hard layer (rock layer) such as a clay layer at the bottom of the mud, it will also bite and slip into the hard layer in the mud. Difficult so-called good grip action.

  Therefore, it can run in paddy fields and muddy mud. The shaving plate portion 23 does not protrude, and the convex portion 26 of the concavity and convexity opposite edge 25 of the outer peripheral forming plate portion 24 between the mud scribing plate portions 23 is not sharp, so it can be rattled with a small allowable range of vibration. Not only noise and vibration but also breakage and damage are suppressed, and sufficiently good road driving is possible.

  Specific embodiments of the present invention will be described with reference to the drawings.

  In this embodiment, the present invention is applied to a wheel of a riding grooving machine that is a riding field work machine.

  The present embodiment is a wheel capable of running on a field provided with a large number of metal-made, wide-plate-shaped mudboard portions 23 with a gap in the circumferential direction on the outer peripheral portion of the wheel formed of a metal plate on the outer periphery of the spoke portion 43. Each of the scraper plates 23 protrudes in a direction orthogonally intersecting with the plate surface direction and the front end portion in the circumferential direction does not protrude from the outer periphery. It is set as the structure which provided.

  That is, the present embodiment is made of metal, and is not a metal disc, but is provided with spoke portions 43 radially in the cylindrical engagement portion 16 disposed in the center as shown in FIGS. Plate-shaped perimeter forming plate portion 24 is provided on the outer periphery of the plate, and the plate-shaped scraper plate protrudes from both the front and back surfaces of the outer periphery forming plate portion 24 but hardly protrudes from the outer peripheral edge. A portion 23 is provided.

  Further, an uneven edge 25 that does not sharpen the protrusion 26 is formed on the outer peripheral edge of the outer periphery forming plate 24 between the mud plates 23.

  That is, the outer circumference having an outer diameter dimension substantially equal to the outer diameter dimension of the tip of the mud board section 23 without forming a valley section with a short outer diameter between the mud board sections 23 provided with a gap in the circumferential direction. The irregular plate 25 is formed on the outer peripheral edge of the outer peripheral plate portion 24 between the mud plate portions 23.

  The uneven edge 25 is a rectangular wave-shaped U-shaped uneven edge 25 in which a U-shaped convex part 26 having a flat or arcuate tip edge is repeated at intervals.

  More specifically, as shown in FIGS. 8, 10, and 11, the outer periphery forming plate portion 24 of the present embodiment has a donut plate shape and is formed by superposing two metal plates 27 to enhance the reinforcement. I am trying. The outer periphery forming plate portion 24 is provided with reinforcing ribs 63 in the circumferential direction to further increase the strength, but the reinforcing ribs 63 are formed in a bulging shape on the respective metal plates 27 to be polymerized, and this is superposed. The strength is increased. In the present embodiment, a notch 64 is formed in the center direction from the outer peripheral edge of the outer periphery forming plate portion 24, or a notch 65 is also formed in the mud plate portion 23, which is inserted into and fixed to the mud plate portion. As shown in FIG. 9, the outer peripheral end portion of the mud plate portion 23 does not protrude from the outer peripheral edge of the outer peripheral forming plate portion 24 as much as possible, and this protrusion amount is slight and does not protrude. Even paved roads such as these are provided so that passengers can travel sufficiently.

  Further, as shown in FIG. 8, a notch 66 is formed at the outer end portion of the spoke portion 43 to be locked and fixed to the inner peripheral edge of the outer peripheral forming plate portion 24, and a cylindrical engagement is formed at each inner end portion. Part 16 is fixed.

  The riding grooving machine of this embodiment will be described below.

  The right rear wheel 2R is provided with a front wheel 1 at the front portion of the riding portion 3 provided with a handle portion 12, a saddle portion 13, and a footrest portion 14 for steering the front wheel 1, and is driven to rotate by a driving device 8 at the rear portion. And a rear wheel 2 composed of two wheels, the left rear wheel 2L, to form a steerable three-wheeled self-propelled riding section 4, and a groove for forming a groove 6 in the field 5 in the riding section 4 A cut portion 7 is provided.

  Specifically, as shown in FIGS. 1 to 3, the riding portion 3 rotates the handle portion 12 adopting a bar type at the front portion of a frame 28 that is deformed in a side view in a substantially horizontal direction. The saddle portion 13 is pivotally attached, and a cushion is provided on the rear side of the upper portion of the frame 28. The rod-like footrest portion 14 is attached to the left and right side surfaces in the middle of the lower portion of the frame 28. Is mounted in a projecting state, and the riding section 4 is configured so that the operator (passenger) can reliably and stably travel on both the field 5 and the road without attaching a balance to the field 5 with a three-wheel configuration. In addition, it is configured so that an operator can ride in a riding posture such as riding a bicycle or a motorcycle over the riding portion 3.

  In addition, a fork 29 is connected to the lower portion of the handle portion 12, the front wheel 1 is supported on the fork 29, and the front wheel 1 can be steered by rotating the handle portion 12. Thus, a basket 39 is attached in front of the frame 28.

  Further, a prime mover 8 as the driving device 8 is provided at the rear portion of the frame 28, and a rotary drive shaft 9 that is rotationally driven by the driving device 8 is provided below the driving device 8. A horizontal axis is provided at the rear of the frame 28 and below the drive device 8 so as to face the right and left directions orthogonal to the direction, and the right rear is provided at one end (right end) of the rotary drive shaft 9. The wheel 2R is connected, the left rear wheel 2L is connected to the other end (left end), and the right rear wheel 2R and the left rear wheel 2L are rotationally driven by the drive device 8 via the rotational drive shaft 9. It is configured to do.

  More specifically, a mounting mount 50 is attached to the rear portion of the frame 28, the drive device 8 is provided above the mounting mount 50, and a bearing cylinder 48 is disposed in the horizontal outer direction on the left and right portions below the mounting mount 50. The rotary drive shaft 9 is inserted into and supported by the left and right bearing cylinders 48, and both end portions of the rotary drive shaft 9 protruding outward from the shaft support cylinder 48 are used as rear wheel connecting portions 15. The right rear wheel 2R and the left rear wheel 2L are connected to the rear wheel connecting portion 15.

  As shown in FIG. 4, the rotational drive structure of the rotational drive shaft 9 by the drive device 8 is composed of a plurality of pulleys 31, belts 32, gears 33, and chains 34 for rotating power of the power shaft 30 of the drive device 8. A structure for transmitting to the rotary drive shaft 9 via the transmission mechanism 35 is adopted. In the figure, reference numeral 36 denotes an accelerator lever that controls the rotational speed of the power unit 8, 37 denotes a clutch lever that switches the transmission mechanism 35 between a power transmission state and a transmission stop state, and 38 denotes a passenger (operator) that can be operated with feet. It is a foot brake.

  Further, the groove 7 is provided at the rear part of the frame 28 so as to protrude rearward from the right rear wheel 2R and the left rear wheel 2L.

  The grooving part 7 is configured to include the earth discharging plate part 40 on the left and right sides, and when the riding traveling part 4 is run and dragged while the grooving part 7 is in descending contact with the field 5, The earth removing plate portion 40 pushes the soil or mud left and right so that the grooves 6 are formed in the traveling direction of the field 5.

  In addition, as shown in FIG. 2 and FIG. 12, the grooving portion 7 is configured so that the earth discharging plate portion 40 having a length in the front-rear direction is opposed to the C shape in a plan view, and the lower edges thereof are connected to each other. A hull is formed by joining and facing in a V shape in the rear view, and the distance between the left and right earthing plate parts 40 is adjusted to be wider or narrower between the left and right earthing board parts 40. A groove width adjusting means 41 that can adjust the groove width of the groove 6 to be formed is provided so that the groove 6 having a width of 150 to 180 mm and a depth of 80 to 120 mm can be formed in the field 5.

  Further, the riding grooving machine of the present embodiment employs an air-cooled two-cycle 40cc class motor 8 as the driving device 8, and further sets the wheel diameters of the front wheels 1 and the rear wheels 2 (2R · 2L) to 600 mm. It is configured to exhibit a rotational speed of 30 rpm and a working speed of 0.6 m / second, and thereby, a working efficiency of 40a (when creating the groove 6 every 2 m) / hour can be exhibited.

  Further, the present embodiment is configured as follows.

  A self-propelled type that can be steered and provided with a grooved portion 7 that forms a groove 6 in a farm field 5 in a riding traveling portion 4 that is provided in a riding portion 3 with a front wheel 1 that is steered and at least a rear wheel 2 that is a driving wheel. In the riding grooving machine, at least the rear wheel 2 is configured as a plurality of wheels having a right rear wheel 2R and a left rear wheel 2L, and the right rear wheel 2R and the left rear wheel 2L are rotated by a driving device 8. The rotary drive shaft 9 is connected to the driven rotary drive shaft 9 for driving, and the rotary drive shaft 9 is connected to the connecting portion 10 for connecting the rotary drive shaft 9 and the right rear wheel 2R or the left rear wheel 2L. A drive / free switching mechanism 11 is provided for switching between a drive connection state that transmits the rotation and a free connection state that allows rotation without transmission of rotation, and the right rear wheel 2R and the left rear wheel 2L of the rear wheel 2 Two-wheel drive state with both wheels as drive wheels and one with free wheels It can be switched to a single-wheel drive state.

  The operation of this configuration will be described. The riding portion 3 has a front wheel 1 to be steered and a right rear wheel 2R and a left rear wheel 2L as rear wheels 2 which are at least drive wheels, and has at least a three-wheel configuration. The passenger traveling unit 4 is in contact with the front field 1 and at least the left and right rear wheels 2R and 2L in contact with the field 5, so that the front and rear wheels 2R and 2L are stably grounded regardless of whether the vehicle is stopped or traveling. 8 enables the field 5 to travel stably (self-propelled).

  At this time, the groove 6 can be formed in the field 5 by the groove cutting portion 7 provided in the riding traveling unit 4. However, the riding traveling unit 4 can perform straight traveling and turning traveling by steering the front wheel 1. Therefore, it is possible to easily form the groove 6 at a desired position on the field 5 by manipulating the riding traveling section 4 where the operator travels stably.

  Further, when the riding traveling unit 4 travels on the field 5, both the right rear wheel 2 </ b> R and the left rear wheel 2 </ b> L are driven by being connected to the rotational drive shaft 9 that is rotationally driven by the driving device 8. Even if it is a slippery field 5 such as a paddy field, a muddy rice field, or a field formed by soft and soft soil, good traction by the two-wheel drive of the right rear wheel 2R and the left rear wheel 2L On the other hand, it is ensured that it does not slip easily and exhibits excellent running performance in the field 5.

  The riding section 4 according to the present invention stably grounds not only on the field 5 but also on a road such as a paved road by the front wheel 1, at least the right rear wheel 2R, and the left rear wheel 2L. The device 8 can travel stably.

  In addition, at this time, the drive / free switching mechanism 11 provided in the connecting portion 10 that connects the rotary drive shaft 9 rotated by the drive device 8 and the right rear wheel 2R or the left rear wheel 2L is switched to perform this rotation. When the drive connection state in which the rotation of the drive shaft 9 is transmitted to the free connection state in which the rotation is not transmitted and the rotation is free, both the right rear wheel 2R and the left rear wheel 2L of the rear wheel 2 are the drive wheels. The two-wheel drive state (this state is preferable when traveling in the slippery field 5) is switched to the one-wheel drive state in which one of the right rear wheel 2R and the left rear wheel 2L is a free wheel. it can.

  That is, when the vehicle travels by turning the front wheel 1 of the riding section 4, there is a rotational difference between the right rear wheel 2R (inner wheel or outer wheel) and the left rear wheel 2L (outer wheel or inner wheel), but the right rear wheel 2R. By switching the drive / free switching mechanism 11 so that one of the left rear wheel 2L and the left rear wheel becomes a free wheel, a difference in rotation between the drive wheel and the free wheel during turning is allowed. On the other hand, the front wheel 1 can be steered even on a paved road where a high frictional force is generated, and the riding section 4 of the present invention can smoothly turn and turn even on the road, and there is no obstacle to the road running. .

  Further, the drive / free switching mechanism 11 provided in the connecting portion 10 that connects the rotation drive shaft 9 and the right rear wheel 2R or the left rear wheel 2L has a complicated differential device such as a so-called differential gear on the rotation drive shaft 9. Without requiring a complicated electronic switching control device or the like, for example, the right rear wheel 2R or the left rear wheel 2L is rotatably engaged with the rear wheel connecting portion 15 of the rotary drive shaft 9. An engaging portion 16 is provided, and an engaging portion 17 is provided to detachably engage with the connecting portion 10 between the rear wheel connecting portion 15 and the engaging portion 16 so as to be in the driving connection state. Since it is possible to design a simple structure in which the drive connection state is achieved by locking with, and the free connection state is achieved by removing the locking portion 17, it can be realized easily and at a low cost. The simple drive / free switching mechanism 11 makes switching operations easy. Thus, it is possible to easily switch from the field 5 traveling application to the road traveling application and to perform road traveling (similarly, a switching operation from the road traveling application to the field 5 traveling application is easily performed).

  Therefore, the conventional seed riding grooving machine uses a freight vehicle such as a light truck to carry between the worker's home and the field 5, and the loading / unloading operation of the freight vehicle on the loading platform is very labor intensive. However, in the riding grooving machine of the present invention, since it is possible for the worker to travel on the road between the home and the field 5, it is difficult to load and unload the cargo vehicle. Is completely unnecessary and extremely practical.

  Therefore, since it comprised as mentioned above, since the riding traveling part 4 touches the field 5 stably by the front wheel 1 and the plurality of rear wheels 2, the field 5 can be stably traveled (self-propelled) by the drive device 8. In addition, the operator can easily form the groove 6 at a desired position on the field 5 by steering the front wheel 1 and the right rear wheel 2R and the left rear wheel 2L are driven. It can exhibit excellent driving performance with excellent resistance to slipping in fields 5 such as muddy rice fields and fields made of soft and soft soil, and can be grounded not only on fields 5 but also on roads like paved roads. Since the free switching mechanism 11 can easily switch to the one-wheel drive state in which one of the right rear wheel 2R and the left rear wheel 2L is a free wheel, smooth turning traveling by steering the front wheel 1 is possible. There is no obstacle to driving on the road, As a result, it is possible to travel on the road between the home and the farm field 5, so there is no need for troublesome loading / unloading work on the freight vehicle during transportation, and the drive / free switching mechanism 11 is rotated. Since the drive shaft 9 and the right rear wheel 2R or the left rear wheel 2L are provided in the connecting portion 10 without a complicated differential device such as a so-called differential gear or a complicated electronic switching control device. Since a simple structure can be designed, it can be realized easily and at a low cost, and a switching operation can be easily performed.

  Further, in this embodiment, the front wheel 1 is provided at the front portion of the riding portion 3 provided with the handle portion 12 for steering the front wheel 1, the saddle portion 13, and the footrest portion 14, and the drive device 8 is provided at the rear portion. The riding wheel 4 having a three-wheel configuration is configured by providing the rear wheel 2 including two wheels, the right rear wheel 2R and the left rear wheel 2L, which are rotationally driven by the vehicle.

  Accordingly, since the vehicle is configured as described above, the three-wheel configuration including the front wheel 1 and the left and right rear wheels 2R and 2L enables stable traveling on the field 5 and the road, and the saddle 13 You can ride in a riding posture with your feet on the footrest part 14 and your hand on the handle part 12, so you can ride in a comfortable posture and your feet will not get tired, and you ride a bicycle or motorcycle It becomes a riding grooving machine with a configuration that is more practical, such as being able to perform operations such as steering the handle 12 very easily with a sense.

  In this embodiment, the rotational drive shaft 9 that is rotationally driven by the drive device 8 provided in the riding traveling portion 4 is disposed in the lower horizontal direction, and the right rear wheel is disposed at one end of the rotational drive shaft 9. 2R is connected, and the left rear wheel 2L is connected to the other end, and the drive / free switching mechanism is connected to one connecting part 10 or both connecting parts 10 of the rotary drive shaft 9 and each of the rear wheels 2R and 2L. 11 is provided.

  Accordingly, since it is configured as described above, the drive / free switching mechanism 11 is provided at least in the configuration of the rear wheels 2 serving as the drive wheels and the connecting portion 10 between the rotary drive shaft 9 and the right rear wheel 2R or the left rear wheel 2L. It becomes a riding grooving machine having a configuration that is more practical and can be easily designed and realized.

  Further, in this embodiment, the right rear wheel 2R or the left rear wheel 2L is provided with an engaging portion 16 that is rotatably engaged with a rear wheel connecting portion 15 of the rotary drive shaft 9, and this rear wheel connection. The connecting portion 10 between the portion 15 and the engaging portion 16 is detachably locked to be provided with a locking portion 17 that is in the driving connection state, and the driving connection state is achieved by locking with the locking portion 17. The drive / free switching mechanism 11 is configured to be in the free connected state by removing the locking portion 17.

  Therefore, since it is configured as described above, it is possible to easily design and realize a connection structure between the rotary drive shaft 9 that becomes a free wheel and the right rear wheel 2R or the left rear wheel 2L by switching the drive / free switching mechanism 11. The driving and free switching mechanism 11 having excellent switching operability in which the switching operation is extremely easily performed can be configured, and the riding grooving machine has a more practical configuration.

  Further, in this embodiment, the rear wheel connecting portions 15 are provided on the left and right sides of the rotary drive shaft 9, and the engaging portions 16 provided on the right rear wheel 2R or the left rear wheel 2L on the rear wheel connecting portion 15. Is provided in a state of being prevented from coming off, and provided with the locking portion 17 for locking the rear wheel connecting portion 15 and the engaging portion 16, and the locking portion 17 is constituted by a locking pin 17A. As a structure for detachably inserting and locking in a locking hole 18 provided in the rear wheel connecting portion 15 and the engaging portion 16, this driving pin is engaged and locked by inserting and locking the locking pin 17A. The drive / free switching mechanism 11 is configured to be in the free connected state by removing the pin 17A.

  Therefore, since it is configured as described above, the drive / free switching mechanism 11 having excellent switching operability that can be switched by a simple operation by simply inserting and removing the locking pin 17A can be easily designed and realized. It becomes a riding grooving machine with an excellent configuration.

  Further, in this embodiment, the rear wheel connecting portions 15 are provided at both left and right end portions of the rotary drive shaft 9 horizontally disposed below the riding portion 3, and the right rear wheel 2R or the left rear wheel 2L is provided. The engagement portion 16 is provided in the center portion, and a retaining portion 19 is provided in the rear wheel coupling portion 15 to prevent the rear wheel coupling portion 15 from engaging after the engagement portion 16 is engaged. A knob portion 42 of the locking pin 17A that locks and connects 16 is provided on the left and right of the riding portion 3 in an exposed state.

  Therefore, since it is configured as described above, since the pinching portions of the locking pin are provided in the exposed state on the left and right sides of the riding portion, the driving that can easily perform the insertion locking operation and the removal operation of the locking pin.・ It becomes a riding grooving machine with a configuration that excels in switching operability of the free switching mechanism.

  This will be described in more detail below.

  In this embodiment, the connecting portion 10 for transmitting the rotation of the rotary drive shaft 9 to the connecting portions 10 of the rotary drive shaft 9 and the rear wheels 2R and 2L and the rotation are not transmitted and the rotation is not transmitted. A drive / free switching mechanism 11 for switching to a free connected state is provided so that both the right rear wheel 2R and the left rear wheel 2L of the rear wheel 2 are drive wheels, and one is a free wheel. The single-wheel drive state can be switched freely. The drive / free switching mechanism 11 may be provided in one connecting portion 10 between the rotary drive shaft 9 and each of the rear wheels 2R and 2L.

  Specifically, the connecting portion 10 between the rotational drive shaft 9 and each of the rear wheels 2R and 2L is fitted and engaged with the rear wheel connecting portions 15 at both left and right ends of the rotational drive shaft 9, as shown in FIG. The cylindrical engaging portion 16 is provided at the center of the right rear wheel 2R and the left rear wheel 2L.

  In addition, a locking portion 17 is provided that is detachably locked to the connecting portion 10 between the rear wheel connecting portion 15 and the engaging portion 16 so as to be in the driving connection state, and is locked by the locking portion 17. Thus, the drive / free switching mechanism 11 is configured so as to be in the drive connection state and to be in the free connection state by removing the locking portion 17.

  More specifically, the locking portion 17 is constituted by a locking pin 17A having a knob portion 42 at the base end portion.

  The rear wheel connecting portion 15 is formed with a locking hole 18 having a hole length in a direction orthogonal to the axial length direction of the rotary drive shaft 9, and the engaging portion 16 has the engaging portion 16. A locking hole 18 having a hole length in a direction perpendicular to the cylinder length direction is formed through.

  Then, as shown in FIG. 6, the engaging portion 16 is fitted and engaged with the rear wheel connecting portion 15 so that both the locking holes 18 are aligned with each other. As a configuration in which the locking pin 17A is detachably inserted and locked, the driving pin is connected by inserting and locking the locking pin 17A, and the free connecting state is set by removing the locking pin 17A. The drive / free switching mechanism 11 is configured.

  Further, the knob portion 42 is formed by bending a wire rod into a C shape and attaching both end portions thereof to opposite side surfaces of the base end portion of the locking pin 17A. Further, the knob portion 42 is pivotally attached to both ends of the locking pin 17A so that the locking pin 17A is inserted and locked in each communicating locking hole 18. The knob portion 42 is configured to be rotated to be fitted into the engaging portion 16 (see FIG. 7), and the fitted state to the engaging portion 16 is held in a rotationally biased state. Thus, the pivoting positions of both ends of the knob part 42 are made different without being coaxial. Accordingly, when the locking pin 17A is inserted and locked in each locking hole 18 and the knob part 42 is rotated to be fitted in the engaging part 16, the knob part 42 can be easily engaged. In order not to be fitted / removed from 16, the drive connection state can be satisfactorily maintained.

  In addition, when the pin diameter dimension of the locking pin 17A and the hole diameter dimension of each locking hole 18 are set to substantially coincide with each other, the locking pin 17A is inserted and locked into each communicating locking hole 18. In addition, there is a connection structure in which the driving force is satisfactorily transmitted without causing large backlash between the rotary drive shaft 9 (rear wheel connecting portion 15) and the rear wheels 2R and 2L (engaging portion 16).

  Further, the locking hole 18 formed in the engaging portion 16 is provided outside the spoke portion 43 of the right rear wheel 2R and the left rear wheel 2L, and the locking pin inserted and locked in the locking hole 18 is provided. 17A is configured to be exposed outside the spokes 43 of the right rear wheel 2R and the left rear wheel 2L. That is, the locking pin 17A is provided in an exposed state on the left and right of the riding portion 3 so that the locking operation of the locking pin 17A can be inserted into and removed from the locking holes 18, and the right rear wheel 2R and the left rear wheel can be removed. It can be easily performed at an outer position of 2L.

  Further, in this embodiment, the left and right ends of the rotary drive shaft 9, that is, the rear wheel connecting portion 15, the retaining portion for engaging the rear wheel connecting portion 15 with the engaging portion 16 is set to the rear retaining state. 19 is provided.

  Specifically, the retaining portion 19 is formed by penetrating a disc-shaped retaining plate 44 having a diameter approximately the same diameter as the cylindrical diameter of the engaging portion 16 and the center of the retaining plate 44. It is configured to include a screwing tool 47 that employs a bolt 47 that is inserted into the through hole 45 and screwed into a screwing hole 46 formed in the rear wheel connecting part 15, and the engaging part 16 is provided in the rear wheel connecting part 15. The retaining member 44 is fitted and engaged, and the retaining plate 44 is brought into contact with the end surface of the rear end connecting portion 15 from the outside of the engaging portion 16, and the screwing tool 47 is inserted from the outer side of the retaining plate 44 through the through hole 45. By screwing into the screw hole 46, the retaining portion 19 is fixed to the rear end connecting portion 15, and the engaging portion 16 (the right rear wheel 2R and the left rear wheel 2L) is connected to the rear wheel by the retaining plate 44. It is configured to be in a state of being prevented from coming off from the portion 15.

  Further, in the state where the engagement portion 16 is prevented from being detached by the retaining portion 19, the engagement portion 16 is not tightened by the retaining plate 44, and the rear wheel 2 (the right rear wheel 2R and the left rear wheel 2L) is free. The rear wheels 2R and 2L can be rotated by, for example, slightly lifting the riding traveling portion 4 so that the locking holes 18 and the engaging portions 16 of the rear wheel connecting portion 15 can be rotated. The positioning operation of the locking holes 18 is facilitated.

  Further, in this embodiment, the groove cutting portion 7 is configured as follows.

  A self-propelled riding grooving machine capable of steering turning provided with a grooving section 7 for forming a groove 6 in a field 5 in a riding traveling section 4 provided with driving wheels in a riding section 3 provided with a steering handle section 12. The groove cutting portion 7 provided so as to be able to be lifted and retracted is provided so as to be swingable left and right.

  The operation of this configuration will be described. When the operator rides (boards) the riding portion 3, steers the handle portion 12 and causes the riding traveling portion 4 to travel on the field 5 by the drive wheels, the riding portion 4 is provided. The groove 6 can be formed in the field 5 by the grooving portion 7.

  In addition, the handle portion 12 can be steered by an operator so that the riding traveling portion 4 can make a U-turn travel or a turning motion. Grooves 6 are formed in the field 5 while swinging in a direction to avoid pressure or mud pressure.

  That is, with respect to the riding traveling section 4 that performs U-turn traveling or turning traveling, the groove cutting section 7 swings in the same direction as the turning direction of the riding traveling section 4 so as to avoid earth pressure or mud pressure from the farm field 5. (For example, when the riding section 4 turns right, the groove section 7 also swings to the right), and the earth pressure or mud pressure received by the groove section 7 by this swing is substantially the same as that during straight traveling. As a result, the groove 7 does not deform or break.

  Accordingly, it is not necessary to perform a heavy labor for the operator to lift the grooving machine and change the direction, and even if the grooving part 7 is in contact with the field 5, it can be used for U-turn or turning without any problem. It becomes a riding grooving machine.

  Further, the grooving portion 7 of the present invention that can be lifted and retracted can be lifted and retracted away from the field 5 where the groove 6 is not desired to be formed.

  Further, when the riding travel unit 4 enters the farm field 5 such as paddy from a farm road such as paddy, or when leaving the riding travel unit 4 from the farm field 5 to the farm road, the level difference between the farm road and the farm field 5 is reversed. It is also possible to lift and retract the groove 7 so that the groove 7 does not come into contact with the groove 7.

  Therefore, since it is configured as described above, there is no need for heavy labor for the operator (passenger) to lift the grooving machine and change the direction, and U-turn traveling or turning traveling while the grooving part 7 is in contact with the field 5. Even so, it becomes a riding grooving machine excellent in handling property that does not cause deformation or breakage of the grooving portion 7, and the grooving portion 7 is configured to be freely raised and retracted, so it is not desired to form the groove 6. By the way, the grooving part 7 can be moved away from the field 5 and can be lifted and retreated so that the grooving part 7 does not come into contact with the step when entering and exiting the farm road and the field 5. It becomes a revolutionary riding grooving machine.

  Further, in this embodiment, a central holding biasing portion 20 is provided for biasing the groove cutting portion 7 swinging left and right back to the center.

  Accordingly, since it is configured as described above, the central holding biasing portion 20 that biases the groove cutting portion 7 that swings left and right to the center is provided, so that the groove cutting portion 7 is biased and held in the center during straight traveling. In addition, when the transition from U-turn traveling or turning traveling to straight traveling, the groove retaining portion 7 is quickly urged back to the central position which is the straight traveling groove cutting mode by the central holding biasing portion 20. The groove 6 formed in the field 5 is difficult to meander, and the desired groove 6 can be reliably formed. Moreover, every time the groove cutting part 7 is brought into contact with the field 5, there is no need to return to the center position. Therefore, it becomes easy to handle, and even when the grooved portion 7 is lifted and retracted, the grooved portion 7 is easily held by the central holding biasing portion 20 so as not to be disturbed. It becomes a riding grooving machine with a configuration that is more practical.

  Further, in this embodiment, an attachment portion 21 connected to the base end portion of the groove cutting portion 7 is provided in the lower portion of the riding traveling portion 4 so as to be rotatable left and right, and the central holding biasing portion 20 is attached to the attachment portion 21. When the groove cutting portion 7 swings left and right via the mounting portion 21, the center holding biasing portion 20 is stretched to generate a return bias toward the center.

  Further, in this embodiment, a base end portion of the grooving portion 7 is provided outside the attachment portion 21 provided at the lower portion of the riding traveling portion 4 so as to be rotatable left and right, and one end is provided inside the attachment portion 21. When the other end portion of the tensile spring 20A serving as the central holding biasing portion 20 to which the portion is fixed is connected and the groove portion 7 swings left and right via the mounting portion 21, on either side Also in the case of swinging, the center holding biasing portion 20 is stretched so that the return bias toward the center is generated.

  Therefore, since it is configured as described above, the configuration in which the grooved portion 7 that swings from side to side is urged back to the center by the center holding urging portion 20 can be easily designed and realized. It becomes a riding grooving machine.

  Further, in this embodiment, the riding travel unit 4 is provided with an up-and-down rotation shaft 22 for moving the groove-cutting portion 7 up and down, and the groove-cutting portion 7 is swung left and right on the up-and-down rotation shaft 22. It is provided freely.

  Therefore, since it was configured as described above, a configuration that is more practical and capable of easily designing and realizing a configuration in which the grooved portion 7 can be lifted and retracted with respect to the riding traveling portion 4 and can be swung left and right. It becomes a riding grooving machine.

  Further, in this embodiment, a front wheel 1 to be steered is provided at the front portion of the riding portion 3, and a rear wheel 2 that is rotationally driven by a driving device 8 is provided at the rear portion, and the rear wheel 2 includes at least a right rear wheel 2R. It is configured as a plurality of wheels having a left rear wheel 2L, and the riding portion 3 is provided with a handle portion 12, a saddle portion 13, and a footrest portion 14 for steering the front wheel 1, and can be steered in a three-wheel configuration. The self-propelled riding section 4 is configured.

  Therefore, since the configuration is as described above, the riding traveling unit 4 stably contacts the field 5 with the three-wheel configuration including the front wheel 1 and the left and right rear wheels 2R and 2L. Running) and the right rear wheel 2R and the left rear wheel 2L are configured to drive, so that it is difficult to slip and exhibits excellent running performance on the field 5, and the operator straddles the riding section 3. You can ride in a riding posture that sits on the saddle part 13, puts your foot on the footrest part 14, and puts your hand on the handle part 12, so you can ride with a comfortable posture and your feet are not tired, and you can ride a bicycle or motorcycle It is possible to form the groove 6 at a desired position on the field 5 by performing an operation such as steering the handle portion 12 very easily with such a feeling. .

  This will be described in more detail below.

  In this embodiment, the grooving portion 7 is provided so as to be able to be lifted and retracted and swingable to the left and right.

  Specifically, an elevating mechanism 49 that supports the grooving portion 7 so as to be movable up and down is provided.

  The elevating mechanism 49 is configured to control the elevating rotary shaft 22 in parallel with the rotary drive shaft 9 at a position below the drive device 8 of the frame 28 and behind the rotary drive shaft 9. A mounting portion 21 is attached to an intermediate portion of the lifting shaft 22, and a base end portion (front end portion) of the groove portion 7 is integrally connected to the rear outer side of the mounting portion 21, so The groove cutting part 7 is provided in a protruding state behind the moving shaft 22 via the attachment part 21, and the groove cutting part 7 is configured to rotate up and down when the lifting rotary shaft 22 is rotated.

  More specifically, as shown in FIGS. 12 and 13, bearing portions 51 are fixedly attached to the lower left and right portions of the rear end portion of the mounting mount 50, and a cylindrical elevating rotation is provided between the left and right bearing portions 51. The dynamic shaft 22 is pivotally supported. Reference numeral 62 in the figure denotes a fixing bolt for fixing the bearing portion 51 to the mounting mount 50.

  In addition, cylindrical connecting bodies 52 are fitted and fixed to both the left and right sides of the ascending / descending rotation shaft 22, and each connecting body 52 is provided with a connecting portion 53 provided with a connecting hole at an eccentric position. .

  Then, one end of the link bar 55 is pivotally attached to the connection portion 53 (connection hole) of the right connection body 52, and the other end of the link bar 55 is connected to the right side portion on the rear side of the frame 28. FIG. 14 shows an example of a pivoting pivotally pivotally attached to the base end portion of the lifting / lowering operation lever 56 shaped like a side view pivotably pivoted up and down, and pivoting the elevation manipulation lever 56 downward. As described above, the up-and-down rotation shaft 22 is rotated through the link bar 55, and the grooving portion 7 is rotated downward to project substantially horizontally rearward (use state at the time of grooving). When the operation lever 56 is rotated upward, the groove structure 7 is activated and the link structure is configured to retreat upward as shown in FIG.

  Further, when the elevating operation lever 56 is rotated downward, the base end of the lift operating lever 56 contacts a lower limit stopper pin 57 provided on the other end side of the link bar 55 and rotates downward. The grooving portion 7 in a state of being prevented from being overrotated is configured to be in a use state at the time of the grooving.

  Further, when the groove 7 is lifted and retracted on the front side of the groove 7, the groove 28 abuts against the rear end of the frame 28 (mounting mount 50), so An upper limit stopper 58 for preventing the rotation is attached.

  In addition, one end of a tension spring 54 as an urging body 54 is connected to the connection portion 53 (connection hole) of the left connection body 52, and the other end of the tension spring 54 is connected to the lower part on the rear side of the frame 28. The tensioning spring 54 causes the groove 7 to be used when the groove is cut (a state in which the lifting / lowering operation lever 56 is rotated downward) and a retreating state (the lifting / lowering operating lever 56 is rotated upward). And the state of being moved). Reference numeral 59 in the figure denotes a biasing body connecting portion for connecting the other end of the biasing body 54.

  Therefore, the groove cutting portion 7 can be lifted and retracted away from the field 5 where it is not desired to form the groove 6, and the riding section 4 can be moved from the farm road such as a paddle into the field 5 such as a paddy field. When entering, or conversely, when exiting the riding section 4 from the field 5 to the farm road, the groove section 7 is lifted and retracted so that the groove section 7 does not contact the step between the farm road and the field 5. It can also be configured.

  Further, in this embodiment, the attachment portion 21 is provided so as to be rotatable left and right with respect to the raising / lowering rotation shaft 22 below the riding traveling portion 4. Thus, the groove cutting part 7 is configured to be swingable left and right with respect to the riding traveling part 4 by rotating in the left-right direction.

  Specifically, as shown in FIG. 13, the attachment portion 21 is configured in a rectangular frame-like body on which the elevating rotation shaft 22 can be fitted. On the other hand, a female screw cylinder 61 serving as a screwing portion 61 protrudes outward from the opposed peripheral surface portion in the middle of the lifting rotary shaft 22 and is fitted on the lifting rotary shaft 22. The shaft bolt 60 as the swing shaft 60 is screwed to the female screw cylinder 61 from the middle portion of the upper and lower frame portions, respectively, so that the mounting portion 21 (grooving portion 7 ) Is attached to the ascending / descending rotation shaft 22 such that the ascending / descending rotation shaft 22 (passenger traveling unit 4) can be rotated left and right (oscillated).

  Therefore, the operator can steer the handle portion 12 to make the riding traveling portion 4 make a U-turn traveling or turn traveling. At this time, a grooved portion 7 that can swing left and right is provided on the riding traveling portion 4. On the other hand, the groove 6 is formed in the field 5 by swinging in the same direction as the turning direction of the riding section 4 so as to avoid earth pressure or mud pressure from the field 5. The groove cutting part 7 is configured not to be deformed or damaged during U-turn traveling or turning traveling (see FIG. 17).

  A central holding biasing portion 20 for biasing the groove cutting portion 7 swinging left and right with respect to the riding traveling portion 4 to the center is provided on the mounting portion 21.

  More specifically, as shown in FIGS. 14 to 16, a tension spring 20 </ b> A as a central holding biasing portion 20 having one end fixed to the lower portion of the rear side of the frame 28 is attached to the front frame portion of the attachment portion 21. When the other end portion is connected and the groove 7 swings left and right via the mounting portion 21 (when the mounting portion 21 rotates to the left and right with respect to the lifting shaft 22), When swinging to either side, the tension spring 20A is stretched so that the return force of the tension spring 20A causes the groove 7 to return to the center. .

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Front wheel 2 Rear wheel 3 Riding part 4 Riding traveling part 5 Farm 6 Groove 7 Groove part
23 Mud board
24 Perimeter forming plate
25 Uneven edges
26 U-shaped convex part
27 Metal plate

Claims (7)

  In the field work machine wheel provided with a plurality of mudboard portions on the outer periphery of the wheel with a gap in the circumferential direction, the outer periphery forming plate portion with the plate edge as the outer periphery protrudes in the direction intersecting the plate surface direction and the tip portion Is provided with the mud board portion in a state that does not protrude from the outer peripheral edge, and an uneven edge that does not sharpen the convex part is formed on the outer peripheral edge of the outer peripheral forming plate part between the mud board parts. Wheel for field work machine that can run.   The outer circumference forming plate having an outer diameter dimension substantially equal to the outer diameter dimension of the tip of the scraper board section without forming a valley section having a short outer diameter between the scraper board sections provided with a gap in the circumferential direction. The road working machine wheel according to claim 1, wherein the uneven edge is formed on an outer peripheral edge of the outer periphery forming plate part between the mud board parts.   The said uneven | corrugated edge was made into the U-shaped uneven | corrugated edge in which the front-end | tip edge is flat or an arcuate U-shaped convex part is repeated at intervals. Wheels for field work machines that can run on the road.   4. The road according to any one of claims 1 to 3, wherein the plate-shaped mud board portion that projects in a protruding state is provided on the plate surface of the outer periphery forming plate part. Wheels for farm work machines.   The field according to any one of claims 1 to 4, wherein the outer periphery forming plate portion is formed in a disc shape or a donut plate shape by superposing a plurality of metal plates. Wheel for work equipment.   A field work machine characterized in that at least wheels serving as drive wheels of the field work machine are the wheels for a field work machine capable of traveling on a road according to any one of claims 1 to 5.   In a self-propelled riding grooving machine capable of steering turning, provided with a grooving section for forming a groove in a farm field in a riding traveling section provided in a riding section with a front wheel to be steered and at least a rear wheel serving as a driving wheel, The riding grooving machine according to claim 6, wherein at least the rear wheel serving as a driving wheel is the road working machine wheel capable of traveling on a road according to any one of claims 1 to 5.

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