JP2006204213A - Agricultural work vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an agricultural work vehicle capable of decreasing work labor, excellent in workability and having excellent operability by adjusting elements to match with the work vehicle. <P>SOLUTION: An engine-driven driving ring 9 is set at the front end side of a frame 2, a grooving device 16 is set at the rear anchor side of the frame 2, a saddle 21 is set at the frame 2, and a handle 25 is height-adjustably set at the front side of the saddle 2. As an operator can operate in a riding style of grasping the handle 25 and mounting on the saddle 21 so labor is decreased and workability is improved. And, as the saddle 21 can be moved up and down to fit to physique so operability is excellent even in the paddy field of bad foothold. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an agricultural work vehicle that performs work in a paddy field or the like.

  Conventionally, as this type, a self-propelled vehicle in which an engine-driven traveling wheel is provided on the distal end side of a frame having a handle at the proximal end and a scraping body as a rear support member is provided below the proximal end side of the frame. This type of work machine is widely used because it employs a simple configuration in which drive wheels are provided on one side of the frame (for example, Patent Document 1 and Patent Document 2).

  A scraping body (Patent Document 1) that digs into the soil is provided at the rear part of the work vehicle. By incorporating a grooved body similar to the scraping body into the work vehicle, the paddy field or the like can be used. A grooving machine that forms a groove can be configured. In this grooving machine, the driving wheel is driven by the driving wheel on the distal end side, and the driving operation and the grooving of the grooving machine are performed using the handle at the base end Can do.

  Further, there is a work vehicle (for example, Patent Document 3) provided with idle wheels as a rear support body below the base end side of the frame, and the machine main body moves forward by the rotational drive of the traveling wheel on the front end side. Along with this, the idle wheel at the base end rotates while biting into the soil, the sheet hung on the idle wheel is embedded, and the sheet can be stretched on the reed, and the work with the drive wheel on the tip side in this way Cars can perform various tasks for agriculture.

  Since the work vehicle travels with the drive wheels, it does not require a force to push the drive wheels in the traveling direction.However, the worker must walk on the work vehicle, and if a groove cut body is provided, the groove cut In order to cut the groove by the body, it is necessary to apply a downward force by the handle.

  By the way, a groove cutting body such as the above-mentioned scraping body has a surface in which running resistance increases because it forms a groove by cutting it into the ground while cutting. Further, in the conventional work vehicle, a single drive wheel is provided only on one of the left and right sides of the front side of the frame. Therefore, a steering operation is required to stabilize the direction.

Therefore, in the Japanese Patent Application No. 2004-346533, the same applicant provides an engine-driven drive wheel on the front end side of the frame, a grooved body on the base end side of the frame, and a saddle on the frame. A work vehicle with a handle on the front is proposed.
Japanese Utility Model Publication No. 2-114794 JP 2002-363959 A Japanese Utility Model Publication No. 5-74203

  In the working vehicle of the above Japanese Patent Application No. 2004-346533, since it can be operated in a riding posture with a handle and straddling a saddle, the labor is reduced and the workability is excellent. Moreover, since the grooved body on the base end side cuts into the ground and forms the groove while rotating, the groove can be smoothly cut with less resistance.

  When working in a riding posture like this, it is necessary to balance with both feet, and paddy fields and the like are easy to fill and the scaffolding is bad, so if the saddle height does not match the physique of the worker, the work will be done. It is difficult, and similarly, if the handle does not match the physique of the worker, workability is reduced. Furthermore, when working on paddy fields, etc., it is desirable that the drive wheels and the rear support are easily buried, and even if the work vehicle does not move due to being buried or the like, it is desirable to have a structure that allows the vehicle to easily escape in the riding posture. Moreover, since it rides, it is desirable that the wheel and the foot do not interfere with each other, and if necessary, it can be reliably stopped by operation.

  By the way, the convenience can be improved by making the work vehicle a passenger type as described above. However, in the corners and corners of paddy field, the handle is operated with the handle on the base end side as in the past. Sometimes it is easier to work.

  Accordingly, the present invention provides an agricultural work vehicle that is capable of reducing work labor, is excellent in workability, and that is adjusted in accordance with the work vehicle, and that is excellent in operability by being used by the rider. With the goal.

  The invention according to claim 1 is an agricultural work vehicle in which engine-driven drive wheels are provided on the front end side of the frame, and a rear support is provided on the base end side of the frame. A saddle is provided on the frame, and the front side of the saddle A handle is provided on the frame, and the saddle is provided on the frame so as to be adjustable in height.

  According to a second aspect of the present invention, there is provided an agricultural work vehicle in which engine-driven drive wheels are provided on a front end side of a frame, and a rear support is provided on a base end side of the frame. A handle is provided on the rear side of the saddle so that the handle can be attached to the rear side of the saddle.

  According to a third aspect of the present invention, there is provided an agricultural work vehicle in which engine-driven drive wheels are provided on a front end side of a frame, and a rear support is provided on a base end side of the frame. A saddle is provided on the frame, and a front side of the saddle A handle is provided, and a height adjusting mechanism for adjusting the height of the handle up and down is provided.

  According to a fourth aspect of the present invention, there is provided an agricultural work vehicle in which engine-driven driving wheels are provided on a front end side of a frame, and a rear support is provided on a base end side of the frame. The handle is provided with a grip portion at the front and rear.

  According to a fifth aspect of the present invention, there is provided an agricultural work vehicle in which engine-driven drive wheels are provided on a front end side of a frame, and a rear support is provided on a base end side of the frame. A saddle is provided on the frame, and a front side of the saddle The saddle is formed long before and after the frame mounting member.

  According to a sixth aspect of the present invention, the handle is provided with a stop switch for the engine.

  According to a seventh aspect of the present invention, the drive wheel includes a spoke and a closing member that closes between the spokes.

  In the invention according to claim 8, the rear support is a grooved body or a rear wheel.

  According to the structure of Claim 1, since it can operate by the riding posture which has a handle | steering_wheel over a saddle, labor is reduced and it becomes what was excellent in workability | operativity. Moreover, since the saddle can be moved up and down in accordance with the body shape, the operability is excellent even in paddy field where the scaffolding is poor. Specifically, the knee is moderately bent and adjusted so that the force of the foot is easy to enter, while running with balance with the foot, even when buried, you can easily escape by kicking with the foot, and easy Can be used in a posture.

  According to the structure of Claim 2, since it can operate by the riding posture which has a handle | steering-wheel over the saddle, labor is reduced and it becomes what was excellent in workability | operativity. Moreover, when working in a riding posture and working in corners and corners of paddy fields, etc., it is possible to operate by attaching the handle to the rear side and holding the handle from the rear side and pushing the work vehicle .

  According to the structure of Claim 3, since it can operate by the riding posture which has a handle | steering-wheel and straddled a saddle, labor is reduced and it becomes what was excellent in workability | operativity. Moreover, since the height of the handle can be adjusted according to the physique, the handle can be easily operated, has excellent operability, and can be used in an easy posture.

  According to the structure of Claim 4, since it can operate by the riding posture which has a handle | steering-wheel and straddled a saddle, labor is reduced and it becomes what was excellent in workability | operativity. In addition, by changing the grip position of the handle back and forth according to the physique and work content, the handle can be easily operated, has excellent operability, and can be used in an easy posture.

  According to the structure of Claim 5, since it can operate by the riding posture which has a handle | steering-wheel and straddled a saddle, labor is reduced and it becomes what was excellent in workability | operativity. Moreover, since the saddle is formed long in the front and rear direction, when the driving wheel on the front end side is buried, the seating position is the rear side of the saddle, and the driving wheel side is lifted to escape, while the proximal end side When the rear support is buried, the seating position can be the front side of the saddle, and the rear support can be lifted to escape.

  Moreover, according to the structure of Claim 6, the engine stop operation can be reliably performed using the stop switch on the handle close to the hand.

  Moreover, according to the structure of Claim 7, a thing does not enter between spokes by the obstruction | occlusion member.

  Moreover, according to the structure of Claim 8, if it uses a groove cutting body, it can be used as a groove cutting machine, and if it uses a rear wheel, it will become a simple riding management machine which performs various operations.

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention. In each embodiment, an unprecedented agricultural work vehicle is obtained by adopting a new agricultural work vehicle different from the conventional one, and the agricultural work vehicle used in the paddy field etc. will be described.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 5 show a first embodiment of the present invention. As shown in FIG. 1, a frame 2 of an agricultural work vehicle 1 includes a left frame body 3L in the front-rear direction provided on the left side in the traveling direction, and an upper portion thereof. And a right frame body 3R provided on the right side in the traveling direction. The engine 5 is provided at the base end of the long rod 4 and the gear case 6 is provided at the tip. At the same time, a drive shaft 7 orthogonal to the long rod 4 is supported on the gear case 6. The drive shaft 7 protrudes to the right in the traveling direction, and as shown in FIG. 2, the right end thereof is pivotally supported by the tip of the right frame body 3L. Further, the rotation of the transmission shaft 8 inserted into the long shaft 4 and connected to the engine 5 is transmitted to the drive shaft 7 through a gear mechanism (not shown) in the gear box 6. . The frame 2 and the long rod 4 are made of a metal pipe material or the like.

  A drive wheel 9 is provided on the drive shaft 7, and the drive wheel 9 has a plurality of scraping plates 12 fixed to the outer peripheral edge of a ring body 11, and a receiving plate 13 is fixed to the tip side of the scraping plate 12. In addition, the other end of the receiving plate 13 is fixed to the outer peripheral edge of the ring body 11, and the ring body 11 is fixed to the boss portion 14 inserted through the drive shaft 7 via a plurality of spokes 15. The boss portion 14 is fixed to the drive shaft 7 in a non-rotating manner. Thus, in this example, the left and right frame bodies 3L and 3R are provided on the left and right in the traveling direction so as to sandwich the drive wheel 9.

  As shown in FIG. 1 and the like, the left frame body 3L has a substantially square shape when viewed from the side, and a distal end 3A is fixed to the gear case 6, and a groove cut body 16 serving as a rear support is formed at the base end 3B. The rear support is configured to support the rear side of the work vehicle 1 so that the vehicle can run. In addition, the eaves 4 are arranged substantially in parallel on the linear center portion 3C of the left frame body 3L, and the center portion 3C and the eaves 4 are integrally fixed by a fixing member 17.

  The groove cutting body 16 includes left and right side plates 19 and 19 that become narrower toward the front in the traveling direction, and a bottom plate 20 that closes and connects the lower ends of the side plates 19 and 19, and the front side of the bottom plate 20 is inclined. An upward front inclined surface 20A is formed, and the rear side of the bottom plate 20 is formed in a substantially horizontal direction.

  Further, as shown in FIG. 2 and the like, the right frame body 3R has a substantially square shape when viewed from the side, and as described above, the drive shaft 7 is pivotally supported by its tip, The base end is integrally connected to the rear side of the left frame body 3L by a horizontal member 18 in the left-right direction.

  Further, the work vehicle 1 has a saddle 21, and the saddle 21 is integrally provided with frame-side mounting receiving materials 22, 22 by welding or the like above the center side of the left and right frame bodies 3L, 3R. The frame portion 23 of the saddle 21 is fixed to the frame side mounting receiving materials 22 and 22 so that the height can be adjusted. Further, the saddle 21 is provided with a seating portion 24 at the upper portion of the frame portion 23. The seating portion 24 has a cushioning property, the seating portion 24 has a substantially planar shape, and the center line in the front-rear direction is the driving wheel. Nine wheel bodies 11 are arranged along the front-rear direction.

  Further, a handle 25 is provided on the front side of the saddle 21, and the handle 25 is fixed to the frame portion 23 at the lower end of the vertical rod 26 having a substantially letter-shaped shape, and is attached to the distal end side 26 A facing the front side of the vertical rod 26. The front and rear sides 27 and 28 are provided, and the left and right ends of the horizontal sides 27 and 28 are respectively provided with grip points 29 and 29 to be gripped by the hand. The vertical rod 26 is a square pipe and the horizontal rods 27 and 28 are round pipes.

  As shown in FIGS. 2 and 3, the saddle 21 is provided on the frame 2 by a saddle height adjustment mechanism 31 so that the height can be adjusted steplessly. It also functions as a handle position change mechanism that changes the front / rear position of 25. The saddle height adjusting mechanism 31 has mounting portions 32 and 23 projecting left and right at the lower part of the frame portion 23, and a longitudinal long hole 33 is formed in the mounting portion 32, corresponding to the long hole 33. A through hole 34 is formed in the saddle receiving member 22, a bolt 35 as a fixing member is inserted into the long hole 33 and the through hole 34, and a nut 36 is screwed to the tip side to be fastened and fixed. Become. Then, by loosening the bolt 35 and the nut 36 as fastening means, the height of the saddle 21 can be adjusted by the length of the long hole 33 and fixed at that position. It is fixed at a position adjusted by the nut 36. Also, when changing the position of the handle 25, remove the bolt 35, replace the front and rear of the saddle 21, align the long hole 33 with the through hole 34, and then tighten the bolt 35 and nut inserted through the through hole 34 and the long hole 33. By tightening 36, the handle 25 is provided on the rear side. And as shown in FIG. 4, it can operate by pushing the work vehicle 1 with the handle | steering-wheel 25 arrange | positioned at the rear side. Further, the seating portion 24 of the saddle 21 has a portion that protrudes forward and backward of the attachment portion 32. In this example, since the handle 25 is integrally attached to the saddle 21, the height of the handle 25 relative to the frame 2 is also adjusted by adjusting the height of the saddle 21.

  Further, as shown in FIG. 5 and the like, the work vehicle 1 includes a handle height adjusting mechanism 37 that adjusts the height of the handle 25 steplessly. The handle height adjusting mechanism 37 has a sheath tube 38 having an upper opening at the center of the vertical rod 26. The sheath tube 38 is formed to be larger than the distal end side 26A and the proximal end side 26B of the vertical rod 26. A vertical slit 38A is provided, a distal end side 26B of the vertical rod 26 is slidably inserted from the upper opening, a lower portion is fixed to the proximal end side 26B, and further, on both upper sides of the slit 38A The flanges 39, 39 are provided with a gap between them, and the bolts 40 are inserted into the holes 39A, 39A formed in the flanges 39, 39, and the nuts 40A are screwed into the bolts 40. Thus, it is fixed at a position adjusted by a bolt 40 and a nut 40A as fastening means.

  Therefore, loosen the bolt 40 and nut 40A, slide the tip side 26B of the vertical rod 26 up and down, and tighten the bolt 40 and nut 40A to fix the height of the horizontal rods 27 and 28 of the handle 25. can do.

  In the figure, reference numeral 41 denotes a grip portion fixed to the upper portion of the gear case 6, and reference numeral 42 denotes a hood which covers the front upper portion of the drive wheel 9 from the left and right, and is fixed to the gear case 6. Further, 43 is a stand, and a base end is rotatably connected to the right side of the fixing member 17 in the traveling direction, and the work vehicle 1 is operated by rotating the stand 43 to the rear side during traveling. Further, the seat 24 of the saddle 21 is above the engine 5.

  A stop switch 51 of the engine 5 is provided on the left and right sides of the horizontal rod 28 of the handle 25. The stop switch 51 and the engine 5 are connected by a flexible operation cable 52. Since the cable 52 has flexibility, it can be used as it is even if the front and rear positions of the handle 25 are changed.

  Next, the operation of the above-described configuration will be described. An operator straddles the saddle 21 and grabs the horizontal rods 27 and 28 of the handle 25 and gets on the work vehicle 1. In this case, the saddle height adjusting mechanism 31 adjusts the height of the saddle 21 according to the physique, and the user can get on with the foot attached to the ground so that it can be operated in an easy posture. Further, the height of the handle 25 can be adjusted by the handle height adjusting mechanism 37. When the engine 5 is started, this rotational force rotationally drives the drive wheels 9 via the transmission shaft 8, the drive shaft 7, etc., and the scraper 12 scrapes the soil G such as paddy field by this rotational drive, and the work vehicle 1 moves forward. With this advance, the groove cutting body 16 behind the drive wheel 9 cuts into the groove while biting into the soil G, and a groove that follows the cross-sectional shape is formed.

  In this way, the operator can work by placing his / her feet on the ground while straddling the work vehicle 1 and grips the front handle 25 in this state. The working vehicle 1 can be operated easily. In addition, since a part of the body weight can be applied to the grooved body 16 in a posture straddling the saddle 21, it is possible to apply a force that causes the grooved body 16 to bite into the soil.

  Further, when the driving wheel 9 on the front side in the traveling direction is buried in the soil G and does not move during traveling in a paddy field or the like, sitting on the rear side of the seating portion 24 of the saddle 21 and applying the weight lifts the driving wheel 9 side, It becomes possible to run. On the other hand, if the resistance of the grooved body 16 increases and stops moving, sitting on the rear side of the seating portion 24 of the saddle 21 and applying weight, the grooved body 16 is lifted, the resistance decreases, and the vehicle can run.

  Furthermore, when working mainly in corners and corners of paddy field or turning, if the front and back position of the saddle 21 is changed, the handle 25 becomes the rear side, and can be operated with the handle 25, for example, The rear side can be lifted by the handle 25 and the vehicle can turn around the drive wheel 9.

  In this way, in this embodiment, corresponding to claim 1, agriculture in which engine-driven drive wheels 9 are provided on the distal end side of the frame 2 and a grooved body 16 that is a rear support is provided on the proximal end side of the frame 2. In the work vehicle 1, the saddle 21 is provided on the frame 2, the handle 25 is provided on the front side of the saddle 21, and the saddle 25 is provided on the frame 2 so that the height can be adjusted. Because it can be operated with the, the labor is reduced and the workability is excellent. In addition, since the saddle 21 can be moved up and down in accordance with the body shape, the operability is excellent even in paddy field where the scaffolding is poor. Specifically, the knee is moderately bent and adjusted so that the force of the foot is easy to enter, while running with balance with the foot, even when buried, you can easily escape by kicking with the foot, and easy Can be used in a posture.

  In this way, in this embodiment, corresponding to claim 2, engine-driven drive wheels 9 are provided on the distal end side of the frame 2, and a groove cut body 16 serving as a rear support is provided on the proximal end side of the frame 2. In the agricultural work vehicle 1, the saddle 21 is provided on the frame 2, the handle 25 is provided on the front side of the saddle 21, and the handle 25 can be attached to the rear side of the saddle 21. Because it can be operated in a riding posture, labor is reduced and workability is excellent. Moreover, when working in a riding posture and working at corners or corners of paddy fields, etc., the handle 25 is attached to the rear side, and the work vehicle 1 is pushed by holding the handle 25 from the rear side. be able to.

  In this way, in this embodiment, corresponding to claim 3, agriculture in which engine-driven drive wheels 9 are provided on the distal end side of the frame 2 and a grooved body 16 as a rear support is provided on the proximal end side of the frame 2. In the work vehicle 1, the saddle 21 is provided on the frame 2, the handle 25 is provided on the front side of the saddle 21, and the height adjustment mechanism 31 that adjusts the height of the handle 25 up and down is provided. Since it can be operated with a riding posture straddling the vehicle, the labor is reduced and the workability is excellent. Moreover, since the height of the handle 25 can be adjusted according to the physique, the handle 25 can be easily operated, has excellent operability, and can be used in an easy posture.

  In this way, in this embodiment, corresponding to claim 4, engine-driven drive wheels 9 are provided on the distal end side of the frame 2, and a groove cut body 16 serving as a rear support is provided on the proximal end side of the frame 2. In the agricultural work vehicle 1, a saddle 21 is provided on the frame 2, a handle 25 is provided on the front side of the saddle 21, and the handle 25 has grips 29 and 29 at the front and rear. Because it can be operated in a riding posture, labor is reduced and workability is excellent. Moreover, by changing the grip portion 29 of the handle 25 back and forth according to the physique and work content, the handle 25 can be easily operated, has excellent operability, and can be used in an easy posture.

  In this way, in this embodiment, corresponding to claim 5, engine-driven drive wheels 9 are provided on the distal end side of the frame 2, and a groove cut body 16 serving as a rear support is provided on the proximal end side of the frame 2. In the agricultural work vehicle 1, a saddle 21 is provided on the frame 2, a handle 25 is provided on the front side of the saddle 21, and the saddle 21 is formed long before and after the frame side mounting receiving material 22. Since it can be operated with a riding posture straddling the saddle 21, labor is reduced and workability is excellent. In addition, since the saddle 21 is formed long in the front and rear, and the front and rear extend from the frame side mounting receiving material 22, when the front driving wheel 9 is buried, the sitting position is the rear side of the saddle 21, and the driving wheel If the groove cut body 16 on the base end side is buried, the seating position can be the front side of the saddle 21 and the groove cut body 16 can be lifted.

  In this way, in this embodiment, since the stop switch 51 of the engine 5 is provided on the handle 25 corresponding to claim 6, the stop switch 51 of the handle 25 close to the hand is used to ensure that the engine 5 Stop operation can be performed.

  In this way, in this embodiment, corresponding to claim 8, the rear support is the groove cutting body 16, so that the work vehicle 1 can be used as a groove cutting machine.

  In addition, as an effect of the embodiment, the handle 25 can be attached to the rear side by providing the handle 25 integrally with the saddle 21 and changing the direction of the saddle 21 to attach to the frame 2. Since the saddle height adjusting mechanism 31 also serves as a handle position changing mechanism that changes the front-rear position of the handle 25, the configuration can be simplified. Further, in the work vehicle 1 in which the driving wheel 9 for driving the engine is provided on the front end side of the frame 2 and the grooved body 16 is provided on the lower side of the base end side of the frame 2, a saddle 21 is provided on the frame 2. Since the handle 25 is provided on the front side and the frame bodies 3L and 3R are provided on the left and right with the drive wheel 9 in between, the handle 25 can be held and operated with the riding posture straddling the saddle 21, so labor is not required. Excellent in properties. In addition, since the frame bodies 3L and 3R are provided with the left and right sides of the drive wheels 9 interposed therebetween, the straight travel performance during travel is excellent and travel operability is improved. Further, since the left saddle receiving material 22 is provided on the left frame 3L, the right saddle receiving material 22 is provided on the right frame body 3R, and the load of the saddle 21 is received by the left and right frame bodies 3L and 3R, it is further stable. It becomes the structure.

  FIG. 6 shows a second embodiment of the present invention. The same reference numerals are given to the same parts as those in the first embodiment, and the detailed description thereof will be omitted. Is bent rearward, and its end portions 27A and 27A are formed long in the front-rear direction, and the grip portion 29 is constituted by the end portion 27A. Further, the front side of the recumbent rod 27 is also a grip portion 29.

  Therefore, by grasping the appropriate position of the end portion 27A that is long in the front-rear direction or by grasping the front side of the recumbent arm 27, the front-rear position of the grip can be changed according to the physique and use conditions.

  Thus, in this embodiment, corresponding to claim 4, the agricultural work vehicle 1 in which the driving wheel 9 for driving the engine 5 is provided on the distal end side of the frame 2 and the rear support is provided on the proximal end side of the frame 2. In FIG. 2, a saddle 21 is provided on the frame 2, a handle 25 is provided on the front side of the saddle 21, and the handle 25 is provided with a grip portion 29 at the front and rear, so that the grip portion of the handle 25 is changed back and forth according to the physique and work content. Thus, the operation of the handle 25 is easy, the operability is excellent, and the rider can be used in an easy posture, and the same actions and effects as the respective embodiments can be obtained corresponding to each claim.

  FIG. 7 shows a third embodiment of the present invention. The same reference numerals are given to the same portions as those in the above-described embodiments, and detailed description thereof will be omitted. A horizontal frame 27B in which a pipe material or the like is formed in a long oval shape in the left-right direction is formed at the tip of the vertical rod 26, and a gripping portion 29 is constituted by the horizontal frame 27B.

  Therefore, the work vehicle 1 can be operated by grasping an appropriate position of the oval horizontal frame 27B according to the physique and use conditions.

  Thus, in this embodiment, corresponding to claim 4, the agricultural work vehicle 1 in which the driving wheel 9 for driving the engine 5 is provided on the distal end side of the frame 2 and the rear support is provided on the proximal end side of the frame 2. In FIG. 2, a saddle 21 is provided on the frame 2, a handle 25 is provided on the front side of the saddle 21, and the handle 25 is provided with a grip portion 29 at the front and rear, so that the grip portion of the handle 25 is changed back and forth according to the physique and work content. Thus, the operation of the handle 25 is easy, the operability is excellent, and the rider can be used in an easy posture, and the same actions and effects as the respective embodiments can be obtained corresponding to each claim.

  FIG. 8 shows a fourth embodiment of the present invention. The same reference numerals are given to the same portions as those of the above-mentioned embodiments, and detailed description thereof will be omitted. In this example, the work vehicle 1 is a rear support body. As shown, a rear wheel 61 is provided, and the rear wheel 61 is a driven wheel provided on the rear side of the frame 2 so as to be freely rotatable. An attachment (not shown) is detachably attached to the base end side of the frame 2.

  Further, the drive wheel 9 is located in the ring body 11 and is provided with a plate-like closing member 62 between the spokes 15 and 15, and the closing member 62 closes the gap between the spokes 15 and 15.

  And, in use, it can be used as it is for traveling, or can be attached to an attachment such as an agricultural implement. In this example, in the riding posture, the space between the spokes 15 and 15 of the front drive wheel 9 is closed, so that no object enters between them.

  Thus, in the present embodiment, corresponding to claim 7, the drive wheel 9 includes the spoke 15 and the closing member 62 that closes the space between the spokes 15. Things never get in.

  In this way, in this embodiment, corresponding to claim 8, the rear support is the rear wheel 61, so that it becomes a simple riding management machine for performing various operations. The work vehicle 1 is a two-wheel vehicle and is extremely easy to handle, such as transporting and moving, and exhibits the same operations and effects as the embodiments corresponding to each claim.

  9 and 10 show a fifth embodiment of the present invention. The same reference numerals are given to the same parts as those of the above-described embodiments, and detailed description thereof will be omitted. In this example, the base end of the frame 2 is described. Further, a groove cutting body 16A made of a rotating member as a rear support is fixed in a detachable manner. As shown in FIG. 10, the groove cutting body 16A is symmetrical and comprises a pair of dish-shaped disk bodies 71, 71. The disk body 71 is recessed around the central flat plate portion 72 toward the center side. The concave curved portion 73 is connected, and an inclined surface 74 is formed on the periphery of the concave curved portion 73, and the outer peripheral surface portion is centered on the rotating shaft 75 of the groove cutter 16A. 76, and a flange portion 77 is provided outside the end surface of the outer peripheral surface portion 76. The flange portions 77, 77 of the disc bodies 71, 71 are joined to each other so that the left and right disc bodies 71, 71 are joined and integrated to form a groove. A machine 16A is formed, and a convex outer peripheral portion 78 forming a groove is formed by the inclined surfaces 74, 74 on the left and right sides and the outer peripheral surface portions 76, 76. The rotating shaft 75 is arranged in a direction crossing the traveling direction, and the rotating shaft 75 passes through the centers of the flat plate portions 72, 72 and is fixed to the flat plate portions 72, 72. Are provided with bearings 79, 79. The grooving machine 16A is attached to the base end of the frame 2 by a mounting member 41. The mounting member 81 fixes the bearings 79 and 79 inside the frame body portion 82, and the groove cutting machine 16A The body 16A is rotatably provided, and the tip of the mounting member 81 is detachably attached to the base end of the frame 2.

  Then, as the work vehicle 1 moves forward, the grooved body 16A behind the drive wheel 9 rotates while biting into the soil G, and as shown in FIG. 10, a groove M following the cross-sectional shape of the convex outer peripheral portion 78 is formed. It is formed.

  Thus, in the present embodiment, corresponding to claim 8, the rear support is the groove cutting body 16A, and the work vehicle 1 can be used as a groove cutting machine.

  Further, as an effect of the embodiment, the disc body 71 has the concave curved portions 73 and 73 on both sides of the convex outer peripheral portion 78 having the inclined surfaces 74 and 74. Therefore, the concave curved portions 73 and 73 form the groove M. By pressing both sides, the left and right sides of the groove M can be finished cleanly.

  In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible. For example, the shape of the frame can be selected as appropriate. Furthermore, the size, shape, dimensions, etc. of the drive wheels can be selected as appropriate. Also, the handle is not limited to the shape of the embodiment, and various shapes can be used. Further, a rear support can be selected as appropriate. In addition, in the embodiment, the handle is integrally provided on the saddle, and the handle can be attached to the rear side by changing the direction of the saddle. However, the saddle can be fixed to the frame or the saddle can be adjusted in the vertical position on the frame. It may be provided that only the handle can be attached to the rear side.

It is a perspective view which shows Example 1 of this invention. It is a perspective view around a saddle same as the above. It is sectional drawing of a saddle height adjustment mechanism same as the above. It is a perspective view of the state which made the handle the back side same as the above. It is a perspective view which notched a part of handle height adjustment mechanism same as the above. It is a top view of the handle which shows Example 2 of the present invention. It is a top view of a handle showing Example 3 of the present invention. It is a perspective view which shows Example 4 of this invention. It is a perspective view which shows Example 5 of this invention. It is sectional drawing of a rear part support body same as the above.

Explanation of symbols

1 Agricultural work vehicle 2 Frame 3L Left frame body 3R Right frame body 4 Long frame (frame)
5 Engine 9 Drive wheel
15 spokes
16, 16A Grooved body (rear support)
21 saddle
22 Frame side mounting receiving member
25 Handle
29 grip points
31 Saddle height adjustment mechanism
37 Handle height adjustment mechanism
51 Stop switch
61 Rear wheel
62 Blocking member G Soil M Groove

Claims (8)

In an agricultural work vehicle in which an engine-driven drive wheel is provided on the front end side of the frame and a rear support is provided on the base end side of the frame, a saddle is provided on the frame, a handle is provided on the front side of the saddle, and the saddle An agricultural work vehicle characterized in that the height of the frame is adjustable on the frame. In an agricultural work vehicle provided with engine-driven driving wheels on the front end side of the frame and a rear support on the base end side of the frame, a saddle is provided on the frame, a handle is provided on the front side of the saddle, and the handle Can be attached to the rear side of the saddle. In an agricultural work vehicle provided with engine-driven driving wheels on the front end side of the frame and a rear support on the base end side of the frame, a saddle is provided on the frame, a handle is provided on the front side of the saddle, and the handle An agricultural work vehicle comprising a height adjustment mechanism for adjusting the height of the vehicle up and down. In an agricultural work vehicle provided with engine-driven driving wheels on the front end side of the frame and a rear support on the base end side of the frame, a saddle is provided on the frame, a handle is provided on the front side of the saddle, and the handle Agricultural work vehicle characterized by having grip points at the front and rear. In an agricultural work vehicle in which an engine-driven drive wheel is provided on the front end side of the frame and a rear support is provided on the base end side of the frame, a saddle is provided on the frame, a handle is provided on the front side of the saddle, and the saddle Is an agricultural work vehicle characterized by being formed long before and after the frame mounting member. The agricultural work vehicle according to any one of claims 1 to 5, wherein a stop switch for the engine is provided on the handle. The agricultural work vehicle according to any one of claims 1 to 5, wherein the driving wheel includes a spoke and a closing member that closes between the spokes. The agricultural work vehicle according to any one of claims 1 to 7, wherein the rear support is a grooved body or a rear wheel.

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