JP3692101B2 - Passenger management machine - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a passenger management machine.
[0002]
[Prior art]
Conventionally, as one form of a passenger management machine, left and right front wheels are provided at a front lower position of an airframe frame provided with a driving part and a prime mover part, and left and right rear wheels are provided at a rear lower position to constitute a traveling part. It is known that various kinds of management work are performed by a working machine that is connected to a rear position of the unit so as to be movable up and down (see, for example, Japanese Patent Laid-Open Nos. 61-81702 and 60-179506).
[0003]
[Problems to be solved by the invention]
However, in the conventional passenger management machine described above, consideration is not given to the relative arrangement of the transmission system that transmits power from the prime mover to the left and right rear wheels, the work machine, and the means for raising and lowering the work machine. Therefore, the compactness that is a characteristic of the passenger management machine is not sufficiently achieved, and the stability of the fuselage is lacking, and there is a problem that the usability is poor.
[0004]
[Means for Solving the Problems]
The present invention provides a driving part at the front part of the fuselage frame, a motor part at the rear part, left and right front wheels at a lower position in the front part of the fuselage frame, and left and right rear wheels at a lower part in the rear part. In the riding management machine configured to connect the various work machines to the rear position of the traveling part via the hitch part so as to be attachable / detachable and liftable, the left and right rear wheels are connected to the left and right positions disposed below the prime mover part. A left-right cylinder that is provided with a shaft on the rear axle case and that supports the interior of the transmission shaft with the axis line in the left-right direction behind the wheel shaft of the left and right rear wheels and below the prime mover. A hitch body of the hitch portion is provided at the extending end portion of a hitch arm that is horizontally installed on the cylindrical support shaft and rotatably mounted on the cylindrical support shaft, and is detachably attached to the hitch body. Between the input shaft of various work machines and one end of the transmission shaft It is linked and connected by a removable transmission case so that power can be transmitted from the prime mover to various work machines, and it is at a position below the rear axle case on one side, which is the transmission case side, and more than the transmission case. The base end of the hydraulic cylinder that swings the hitch body up and down is attached to the inside of the body, and the tip of the hydraulic cylinder is extended rearward and connected to the hitch arm to eliminate the above problem. It is a thing.
[0005]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0006]
A shown in FIGS. 1 to 3 is a riding management machine according to the present invention, and a cultivating unit 2 as various working machines is detachably connected to a position immediately behind the traveling unit 1 through a hitch unit 40. .
[0007]
As shown in FIGS. 1 to 3, the traveling unit 1 is provided with a driving unit 4 at the front part on the body frame 3 and a motor unit 5 at the rear part. The side front wheels 6, 6 are attached via a front differential case 7, while the left and right side rear wheels 8, 8 are attached via a rear differential case 9 at the rear lower position.
[0008]
As shown in FIGS. 1 and 2, the operation unit 4 raises the handle column 10 at the front end of the machine body frame 3 directly upward and extends it from the midway toward the rear upper side. A handle support shaft 11 is erected, a handle 12 is attached to the upper end of the handle support shaft 11, and a front wheel steering mechanism (not shown) is interlocked and connected to the lower end.
[0009]
In addition, the handle support shaft 11 is provided with a universal joint portion 13 in the middle portion, and the upper support shaft 11a can be slidably adjusted in the front-rear direction around the universal joint portion 13, and attached to the upper end of the upper support shaft 11a. The posture of the steering wheel 12 can be changed between a seating use position where the handle 12 is seated and used on a driver seat 20 described later and an upright use position used while standing on a bumper / step body 25 described later. Reference numeral 14 denotes an accelerator lever, 15 denotes an accelerator interlocking mechanism, and 16 denotes an auxiliary speed change lever. Along with the lever guide groove 17, a forward / reverse switching operation and a clutch disengaging operation at a neutral position can be performed. Reference numeral 17 denotes a brake pedal.
[0010]
Further, as shown in FIGS. 1 and 2, a driver's seat 20 is disposed immediately after the handle column 10, and a main transmission lever 21 is disposed at a left side position of the driver 20, while A hitch part raising / lowering lever 22 which will be described later is disposed in this position. Reference numeral 23 denotes a battery.
[0011]
As shown in FIG. 4, the main transmission lever 21 can be inserted into a substantially H-shaped lever guide groove 24 in a plan view, and can be operated in six stages for forward and backward movement along the lever guide groove 24. I try to do it.
[0012]
Further, as shown in FIGS. 1 and 2, a bumper / step body 25 is attached to the front end of the body frame 3, and the bumper / step body 25 has the base ends of a pair of left and right arm portions 25a, 25a. The body frame 3 is pivotally supported by the support shaft 26 so as to be pivotable up and down, and the ends of both arm portions 25a and 25a are extended forward, and are extended upward along the front surface of the handle column 10 from the middle. Then, both ends are extended from the upper position of the handle column 10 in opposite directions and are integrally connected in a butted shape to form a frontal portal type, and further, the ends of the pair of left and right arm portions 25a, 25a A rectangular plate-like bumper and step body 25b is installed between the sections.
[0013]
In this way, as shown in FIG. 1, the bumper / step body 25 is in a projecting position where the bumper / step body main body 25b is lifted upward to be in a standing state and lowered to the front and lower. The posture can be changed between the step use position. Reference numeral 27 denotes a step use position stopper.
[0014]
When the handle 12 is used at the seating use position, the bumper / step body 25 is set to the bumper use position. When the handle 12 is used at the standing use position, the bumper / step body 25 is used. Is set to the step use position so that the operator can stand and operate the handle 12 on the bumper / step body 25.
[0015]
As shown in FIGS. 1 and 2, the prime mover unit 5 interlocks the output shaft 30 a of the engine 30 and the input shaft 31 a of the mission unit 31 via interlocking pulleys 33 and 34 with an interlocking belt 32, and The rear differential case 9 is linked to 31 and the front differential case 7 is linked to the transmission unit 31 via a drive shaft 35 so that four-wheel drive can be performed. Reference numeral 36 denotes a tension roller.
[0016]
As shown in FIGS. 1 to 3 and 5, a pair of left and right stays 41, 41 protrudes rearward from the rear end of the left and right side walls of the engine 30, and the rear ends of both stays 41, 41. A cylindrical support shaft 42 is horizontally mounted with the axis line in the left-right direction therebetween, and a transmission shaft 43 with the axis line directed in the left-right direction is supported in the cylindrical support shaft 42. It is disposed below the prime mover 5 and at a position ahead of the rear ends of the left and right rear wheels 8, 8.
[0017]
Moreover, as shown in FIG. 3, a hydraulic cylinder 56 for raising and lowering the tiller 2 is disposed in a space S formed below the transmission shaft 43 and between the left and right rear wheels 8 and 8. are doing.
[0018]
The input pulleys 44 and 44 are attached to the left end 43a of the transmission shaft 43, and the transmission belts 46 and 46 are respectively provided between the input pulleys 44 and 44 and the output pulleys 45 and 45 attached to the output shaft 30a of the engine 30. Is wound. 47 is a tension roller.
[0019]
As shown in FIG. 5, a transmission case 49 is detachable between the right end portion 43b of the transmission shaft 43 and the right end portion 48a of the input shaft 48 of the tillage portion 2, and the shafts 43 and 48 are connected to each other. The power transmission case 49 is interposed in the center so as to be rotatable, so that power can be transmitted from the engine 30 to the tillage unit 2. 49a and 49b are transmission sprockets, and 49c is a transmission chain.
[0020]
As shown in FIGS. 1 to 3 and 5, the hitch portion 40 has a hitch arm supporting cylinder 50 fitted to the outer peripheral surface of the cylindrical support shaft 42 so as to be rotatable, and is rearward of the cylindrical body 50. The hitch arm 51 is extended toward the front, and a U-shaped hitch main body 52 opened rearward is attached to the tip of the hitch arm 51, and the tiller attached to the front end of the tillage unit 2 is attached to the hitch main body 52. The part-side hitch 53 can be detachably connected by a connecting pin 54. 52a is a connecting pin hole, 60 is a transmission case mounting bracket, and 61 is a transmission case mounting bolt.
[0021]
Then, as shown in FIG. 5, the base portion of the cylinder body 56a of the hydraulic cylinder 56 is mounted via a mounting bracket 57 directly below the right rear axle case 55, and the tip of the piston rod 56b of the hydraulic cylinder 56 is The rod 51 is connected to a rod connecting pin 58 projecting rightward from the middle of the arm 51.
[0022]
In this way, by extending and retracting the piston rod 56b of the hydraulic cylinder 56, the hitch arm 51 is rotated up and down, so that the tilling part 2 connected to the hitch body 52 via the tilling part side hitch 53 is placed in the tilling work position. And can be moved up and down between the non-plowing work position.
[0023]
Here, the left rear axle case 59 and the right rear axle case 55 formed by extending from the left and right side walls of the rear differential case 9 respectively to the left and right sides are, as shown in FIGS. 3 and 5, the right rear axle case 55. The base end portion disposing space 62 for disposing the base end portion of the hydraulic cylinder 56 is formed at a position directly below the right rear axle case 55. It is designed so that it can be arranged compactly on the fuselage.
[0024]
As shown in FIGS. 1, 2, and 5, the tiller 2 has a tiller side hitch 53 attached to the front end of the tiller part frame 65, and a tillage transmission case 66 extending in the vertical direction is attached to the middle part. A tail wheel 67 and a cultivator 68 are attached to the ends, and the input shaft 48 is provided at the upper part of the tillage transmission case 66, while a tiller shaft 69 extending in the left and right directions is supported at the lower part. A tilling claw 70 is attached to the tilling shaft 69. Reference numeral 71 is a tillage cover, and 72 is a tillage cover lifting adjustment tool.
[0025]
The embodiment of the present invention is configured as described above. According to this embodiment, the following operational effects are produced.
[0026]
That is, when performing the tilling work with the riding management machine, the operator sits on the driver's seat 20 of the traveling unit 1 and operates the tilling unit 2 to perform the tilling work while the traveling unit 1 is self-propelled.
[0027]
At this time, a bumper / step body 25 is attached to the front end of the machine body frame 3, and the bumper / step body 25 can be made to function as a shock absorber by disposing the bumper / step body 25 at a bumper use position.
[0028]
For example, when moving through a narrow road in a mountainous area, the operator changes the posture of the bumper / step body 25 to the step use position, and the operator stands on the bumper / step body 25. In such a case, by operating the handle 12 whose posture has been changed to the standing use position and causing the traveling unit 1 to travel backward, in case of emergency, jump off the bumper and step body and promptly evacuate. Can do.
[0029]
Moreover, in the present Example, although the tillage part 2 was demonstrated as a working machine connected with the traveling part 1, it is not restricted to this at all.
[0030]
FIG. 6 shows a mounting structure of the handle 12 as another embodiment. In the handle column 10, a sub handle support shaft 80 is provided immediately before the handle support shaft 11. An input gear 81 is attached to the lower end, and an output gear 82 attached to the upper portion of the handle support shaft 11 is engaged with the input gear 81. 83 is a gear case.
[0031]
Then, a mounting cap 84 is provided on the handle 12, and the mounting cap 84 is fitted to the upper end of the upper support shaft 11 a of the handle support shaft 11 and the upper end of the sub handle support shaft 80 so as to be interchangeable. It is possible. Reference numeral 85 denotes a mounting pin.
[0032]
In this way, when the handle operation is performed at the seating use position, the handle 12 is attached to the upper end of the upper support shaft 11a, and when the handle operation is performed at the standing use position, the handle is attached to the upper end of the sub handle shaft 80. 12 can be attached, and the handle 12 in the standing use position is opposite in the steering rotation direction to the handle 12 in the seating use position, and can prevent an erroneous operation when the traveling unit 1 travels backward, Safety in steering operation can be ensured satisfactorily.
[0033]
FIG. 7 shows a mounting structure of the handle 12 as another embodiment, and bevel gears are used as the input gear 81 and the output gear 82.
[0034]
When the handle 12 is attached to the upper end of the handle support shaft 11, the handle 12 is in the standing use position, and when the handle 12 is attached to the upper end of the sub handle support shaft 80, the handle 12 is in the seating use position. It is trying to become.
[0035]
Even in such a structure, the steering rotation position of the handle 12 in the standing use position is opposite to that of the handle 12 in the sitting use position, and the safety in the steering operation is ensured as in the case of the above-described embodiment. To be able to.
[0036]
【The invention's effect】
According to the present invention, the following effects can be obtained.
[0037]
That is, in the present invention, the left and right rear wheels (8, 8) are pivotally mounted on the left and right rear axle cases (59, 55) disposed below the prime mover section (5). A cylindrical support shaft facing left and right that supports the transmission shaft (43) with the axis line in the left-right direction behind the wheel shaft of the left and right rear wheels (8, 8) and below the prime mover section (5). The hitch body (52) of the hitch portion (40) is provided at the extension end of the hitch arm (51) which is installed horizontally on the cylindrical support shaft (42) and is extended rearward. A transmission case (a detachable transmission case between the input shaft (48) of the various work machines (2) and the one end (43a) of the transmission shaft (43) that is detachably mounted on the hitch body (52). 49) linked to each other so that power can be transmitted from the prime mover section (5) to the various work machines (2), at a position below the rear axle case (55) on one side which is the transmission case (49) side, and Biography The base end portion of the hydraulic cylinder (56) is attached to the inward side of the case (49), and the tip end portion of the hydraulic cylinder (56) is extended rearward and connected to the hitch arm (51). Because it is configured, it is a riding management machine that can connect various working machines (2) detachably and vertically, but from the prime mover part (5) to the left and right rear wheels (8, 8), working machine (2) Each transmission system that transmits power to the hydraulic cylinders and hydraulic cylinders (56) that raise and lower the various work machines (2) are integrated in a correlated manner, reducing the longitudinal length and lowering the center of gravity. The overall compactness and stability of the machine, including the machine, has been improved, and the front view is good and easy to use.
[Brief description of the drawings]
FIG. 1 is a side view of a passenger management machine according to the present invention.
FIG. 2 is a plan view of a passenger management machine.
FIG. 3 is a rear view of the passenger management machine.
FIG. 4 is an explanatory plan view of the main transmission lever.
FIG. 5 is a plan view of a hitch portion.
FIG. 6 is a side explanatory view showing a handle mounting structure as another embodiment.
FIG. 7 is an explanatory side view showing a handle mounting structure as another embodiment.
[Explanation of symbols]
A Passenger management machine 1 Traveling part 2 Various work machines (cultivation part)
3 Frame 4 Driving section 5 Motor section 6 Front wheel 8 Rear wheel 40 Hitch section 42 Cylindrical support shaft 43 Transmission shaft 48 Input shaft 49 Transmission case 52 Hitch body 55 Rear axle case 56 Hydraulic cylinder 59 Rear axle case

Claims (1)

  A driving unit (4) is provided at the front of the body frame (3), a motor unit (5) is provided at the rear, and the left and right front wheels (6, 6) are disposed at the lower position of the front of the body frame (3). Left and right rear wheels (8, 8) are provided at the lower position to form the traveling section (1), and various work machines (2) are attached to and detached from the rear position of the traveling section (1) via the hitch section (40). In the riding management machine that is connected to be movable up and down, the left and right rear wheels (8, 8) are pivotally supported on the left and right rear axle cases (59, 55) disposed below the prime mover section (5). The transmission shaft (43) with the axis line directed in the left-right direction is axially supported behind the wheel shafts of the left and right rear wheels (8, 8) and below the prime mover portion (5). A cylindrical support shaft (42) facing left and right is installed horizontally. The hitch portion (51) is attached to the extension end of a hitch arm (51) that is rotatably mounted on the cylindrical support shaft (42) and extends rearward. 40) hitch A body (52) is provided, and a detachable transmission is provided between the input shaft (48) of various work machines (2) detachably mounted on the hitch body (52) and one end (43a) of the transmission shaft (43). The case (49) is interlocked and connected so that power can be transmitted from the prime mover (5) to the various work machines (2), and the rear axle case (55) on one side, which is the transmission case (49) side. A base end portion of a hydraulic cylinder (56) for vertically swinging the hitch body (52) is attached at a lower position and closer to the body side than the transmission case (49), and a distal end of the hydraulic cylinder (56) is attached. A passenger management machine characterized in that the part is extended rearwardly and connected to a hitch arm (51).

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