JPH08118984A - Riding type control machine - Google Patents

Abstract

PURPOSE: To perform small turning for making an uncultivated area as small as possible with reference to a riding type control machine. CONSTITUTION: A driver's section 5 and a prime mover section 6 are arranged in a car body frame F to which a working machine can be connected at its rear end, and front wheels 7 and 7 and rear wheels 9 and 9 are attached to the frame F, and the rear wheels 9 and 9 can be braked through right and left side clutch brake mechanisms by the operation at the driver's section 5. In addition, a side clutch handle H is attached faced forward to the front end of the car body frame F, and right and left side clutch levers 4a and 4b interlocked with the right and left side clutch brake mechanisms respectively are mounted on the right and left sides of the side clutch handle H.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a passenger management machine.

[0002]

2. Description of the Related Art Conventionally, as one form of passenger management machine, there is one in which various working units are vertically movable at a position immediately behind a small tractor which constitutes a traveling unit. Also equipped with a mission, the power from the engine is transmitted to the rear wheels via the mission to drive the rear wheels, and the steering shaft with the steering handle attached to the upper end is linked to the front wheels to form the steering wheels. is there.

However, in the case of such front wheel steering and rear wheel drive, it is difficult to make a small turn because the straight driving force from the rear wheels is received during turning.

There is also a four-wheel drive system in which power is transmitted to the front and rear wheels via a mission, and there is also a rear wheel connected to the mission via left and right side clutch / brake mechanisms.

With this configuration, the power transmission to the left and right rear wheels can be connected and disconnected, and each rear wheel can be braked.

The side clutch / brake mechanism is configured to be operated by pedal operation of a driving section provided in the traveling section.

That is, as shown in FIG. 7, for example, when the vehicle is traveling in a field Y to perform plowing work and turns right before the headland Y1 at the end of the field, the right pedal is operated when turning right. Then, braking force was applied to the right rear wheel to enable a brake turn, and to make as small a turn as possible.

When making a left turn, the left pedal is operated to apply a braking force to the left rear wheel to make a turn.

In FIG. 7, reference numeral 100 is a riding management machine, 101 is a front wheel, 102 is a rear wheel, and 103 is a tilling machine.

[0010]

However, the passenger management machine having the above structure has the following problems.

That is, as shown in FIG. 7, the passenger management machine
When plowing the field Y at 100 and making a turn before the headland Y1, there is a limit even if a small turn is made,
Inevitably, the length D of the uncultivated land portion becomes long, the cultivated area in the field Y becomes small, and the effective cropping area becomes small.

Further, in the passenger management machine, the steer is turned sharply with the rudder turned to the maximum in order to get into the adjacent strip, which makes driving operation difficult and may cause a fall, which is dangerous.

An object of the present invention is to provide a passenger management machine that can solve the above problems.

[0014]

According to the present invention, a driving section and a prime mover section are arranged on a vehicle body frame to which a working machine can be connected at a rear end, and front wheels and rear wheels are attached to the rear wheel. Is capable of braking through the left and right side clutch / brake mechanism by an operation in the driving section, and further, a side clutch handle is attached to the front end of the body frame so as to face forward. The present invention relates to a passenger management machine characterized by mounting left and right side clutch levers that interlock with the left and right side clutch / brake mechanisms.

Further, according to the present invention, the front wheels are interlockingly connected to a steering wheel arranged in a driving section to form a steering wheel, and further, the side clutch / brake mechanism is interlocked with steering of the steering wheel. Also has features.

Further, the present invention is also characterized in that the prime mover section includes an engine and a transmission, and that the engine and the transmission are disposed directly above the rear wheels.

Further, the present invention is characterized in that the side clutch handle is formed in a loop-like shape protruding forward with the left and right base ends attached to the machine body frame.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall side view of a passenger management machine according to the present invention, and FIG. 2 is an explanatory view in plan view.

Embodiments of the present invention will be described below with reference to the drawings.

(Overall Structure) As shown in FIGS. 1 and 2,
The riding management machine A has a cultivator 2 at a position immediately behind the traveling unit 1.
Are linked via a lifting link mechanism 3 so as to be lifted and lowered.

The traveling unit 1 is provided with a steering column 11, a driver's seat 20 and the like on the front portion of the vehicle body frame F, while a prime mover portion 6 is provided on the rear portion thereof, and further below the front portion of the vehicle body frame F. The left and right front wheels 7, 7 are mounted via the front differential case 8 at a position slightly rearward of the steering column 11, and the rear lower wheels are provided on the left and right sides.
9 and 9 are mounted via the rear differential case 10.

The rear wheels 9 and 9 are interlocked with left and right side clutch / brake mechanisms C and C, which will be described later, provided on the transmission 31, respectively, so that power transmission from the transmission 31 can be connected / disconnected and braking is performed. It is configured to be possible.

In the passenger management machine A having the above structure, a side clutch handle H is provided at the front end of the vehicle body frame F, and the left and right sides of the side clutch handle H are interlocked with the left and right side clutch / brake mechanisms C, C, respectively. The present invention is characterized in that the left and right side clutch levers 4a and 4b are attached.

That is, in the present embodiment, the left and right side clutch / brake mechanisms C, C are configured to interlock with the steering of the steering handle 13 mounted on the steering column 11, and the left and right side clutches mounted on the side clutch handle H. It can also be operated by levers 4a and 4b.

Therefore, when the driver gets off the vehicle and lifts the side clutch handle H to support the vehicle body only with the rear wheels 9 and 9 and appropriately operates the left and right side clutch levers 4a and 4b, the small clutch as shown in FIG. 3 is obtained. It is possible to turn.

In FIG. 3, J is a field, K is a headland,
When turning, the distance d between the rear end of the tilling implement 2 and the headland K, which is uncultivated land, can be significantly reduced, and the field J
The effective acreage of can be increased.

The side clutch handle H has left and right base end portions.
The H1 and H1 are attached to the vehicle body frame F, and formed in a loop shape projecting to the front, which makes the handling easy.

F1 is a front hitch attached to the front end of the vehicle body frame F. Left and right base end portions H1 and H1 of the side clutch handle H are detachably attached to the left and right end faces of the hitch F1.

Therefore, there is no problem even when the front weight or the like is attached to the front hitch F1.

A front working machine or the like can be connected to the front hitch F1 when the side clutch handle H is removed.

Below, the left and right side clutch / brake mechanism
Structure of C and C, and mechanism C and C and steering handle
The structure for connecting the mechanisms C, C and the left and right side clutch levers 4a, 4b will be described in detail while describing the relationship with the device 13.

(Left and right side clutch / brake mechanism) In the present embodiment, the left and right side clutch / brake mechanisms C and C are mounted on the left and right traveling axles 83 and 83 provided on the transmission 31, as shown in FIG. There is.

That is, the base ends of the traveling axles 83, 83 facing each other are formed in a spline shape, and the base ends of the traveling axles 83, 83 are formed by bearings 8.
The side clutch gear 85 is loosely fitted so as to support the bearing 84 while supporting the shaft through the shafts 4,84.

Left and right sliding collars 86,86 are spline-fitted to the base ends of the traveling axles 83,83, and the sliding collars 86,86 are attached to the side clutch gear 85 by springs 87,87. The clutch is energized in the meshing direction.

The sliding collars 86, 86 are interlockingly connected to the left and right clutch arms 79, 79 via connecting shafts C1, C1, and the springs 87, 83 are mounted on the traveling axles 83, 83 by an external operation. It is possible to slide against 87 and disengage from the side clutch gear 85 to disengage the clutch.

A multi-plate brake 88 is provided on both left and right ends of the left and right sliding collars 86, 86, respectively.
Each one side contact surface of 86, 86 is configured to contact the multi-plate brake 88.

Therefore, when the side clutch is disengaged, it is advisable to move the sliding collar 86 outward. When the sliding collar 86 is moved outward, the collar 86 presses the spring 87 and activates the multi-plate brake 88. Is configured as follows.

When the sliding collar 86 returns to its original position, the braking force of the multi-plate brake 88 disappears and the side clutch is re-engaged. In FIG. 4, 94 is a rear axle case, and 95 is a main transmission gear group.

[0039] The left and right side clutch / brake mechanism C,
As shown in FIG. 2, C is interlockingly connected to the steering wheel 13 via a front wheel steering mechanism S and a link type transmission mechanism L.

That is, on the front side of the driving section 5, the steering column 11 is extended rearward and upward, and the steering shaft 12 is erected in the steering column 11.
The steering wheel 13 is attached to the upper end of the steering shaft 12, and the front wheel steering mechanism S including the steering arm 71 and the left and right drag rods 72, 73 is interlockingly connected to the lower end of the shaft 12 to front the front wheel steering mechanism S. The front wheels are steered by interlocking with wheels 7,7.

(Front Wheel Steering Mechanism) The front wheel steering mechanism S is
As shown in FIGS. 2, 5 and 6, a steering mechanism bracket 25 formed by bulging upward is provided between a pair of left and right body frames F, F, and the steering shaft 12 is incorporated in the bracket 25. The steering column 11 is erected.
55 is a bolt for fixing the column 11.

The above-mentioned steering mechanism bracket 25 is formed in an inclined shape of front high and low rear, and the steering column 11 standing upright on the bracket 25 is also slightly inclined rearward so that the driver can operate the steering shaft. The steering handlebar 13 connected to the upper end of the handlebar 12 can be easily operated.

In the rear portion of the steering mechanism bracket 25, as shown in FIGS. 5 and 6, a pinion gear 74 is connected to the lower end of the steering shaft 12 and formed into a fan shape that meshes with the gear 74. A rack 75 is provided.

Furthermore, the pinion gear 74 and the fan-shaped rack
75 and is sandwiched between the upper plate 26 and the lower plate 27,
Both plates 26, 27 are connected to the steering mechanism bracket 25 by connecting bolts 56.

In the fan-shaped rack 75, a base shaft (not shown) integrally connected to the rack 75 is provided at the base end of the rack 75 so as to project downward, and the lower end of the base shaft is protruded. The boss 72a formed on the steering arm 71 is connected by spline fitting.

On the other hand, one end of the left and right drag rods 72, 73 is connected to the steering arm 71, and the rods 72, 73 are also connected.
The other ends of are connected to front wheels 7 and 7, respectively.

That is, the front wheels 7, 7 connect the steering arm 71 via the left and right drag rods 72, 73, and the steering arm 71 and the steering shaft 12 are connected to the pinion gear 7
4 and the fan-shaped rack 75 are interlockingly connected.

Therefore, when the steering handle 13 is rotated, the rotation is performed by the steering shaft 12, the pinion gear 74, the fan rack 75, the base shaft, the boss 72a, and the steering arm.
71 is transmitted to the steering arm 71, and the steering arm 71 horizontally swings at a predetermined steering angle.

Further, the link type transmission mechanism L is interlocked with the above-mentioned front wheel steering mechanism S, and the right and left side clutch / brake mechanisms C, C are engaged / disengaged according to the turning angle of the front wheels 7, 7 according to the steering angle. In addition to being intermittent, braking force is applied to the front wheels 7,7.

(Link type transmission mechanism) As shown in FIG.
The link type transmission mechanism L has a structure in which a part thereof substantially overlaps with the front wheel steering mechanism S. As described above, the pinion gear 74 is attached to the base end of the steering shaft 12 of the front wheel steering mechanism S. , A fan-shaped rack 75 having rack teeth 75a meshing with the pinion gear 74 formed in an arc portion is disposed,
Furthermore, the fan-shaped rack 75 and the steering arm 71 are connected (FIG. 6).

The steering arm 71 is interlocked with the front wheels 7,7 via the left and right drag rods 72,73, and the front wheels 7,7 are turned at a predetermined turning angle by rotating the steering handle 13. Is steerable.

On the other hand, to the steering arm 71, one end of the buffer rod 76 is rotatably connected to the left side of the boss 72a at a certain distance, and the other end of the buffer rod 76 is connected to the crank 78. ing. A buffer spring 81 is provided in the middle of the buffer rod 76.

That is, the pivot 78b is provided at the center of the arm 78a of the crank 78, and the other end of the buffer rod 76 is connected to the arm 78a.
On the right side of the pivot 78b on the 78a, it is rotatably connected to a position separated by a certain distance.
78 means that the buffer rod 76 pivotally supports the boss 72a, which is the swing center of the steering arm 71, and the pivotally supporting portion 78b of the crank 78 in a slanting direction. And the swing direction of the crank 78 is opposite.

By the way, engaging pins 78c, 78c are provided at both ends of the crank 78 in a protruding manner, and the engaging pins 78c, 78c are connected to the left and right side clutch operating rods 80, 80.

That is, the left and right side clutch operating rods
Pin engaging portions 80a, 80a are continuously provided at the base ends of 80, 80, and long holes 77, 77 are formed in the pin engaging portions 80a, 80a.
The engagement pins 78c, 78c are engaged with 7, 77.

On the other hand, the left and right side clutch operating rods 8
The tips of 0 and 80 are linked to the tips of left and right clutch arms 79 and 79, which are formed in a substantially V shape. The base ends of the arms 79 and 79 are the left and right side clutch / brake mechanism C provided in the transmission 31. , C are connected to connecting axes C1 and C1.

(Connection of the left and right side clutch levers and the left and right side clutch / brake mechanisms) As shown in FIG.
The tip ends of the side clutch wires W, W whose base ends are respectively connected to the left and right side clutch levers 4a, 4b are connected to the respective tip ends of the pin engaging portions 80a, 80a so as to cross each other. W1 and W2 are the outer and inner parts of the side clutch wires W and W.

With the above structure, for example, when the side clutch wire W is pulled by operating the left side clutch lever 4a, the crank 78 horizontally swings counterclockwise (counterclockwise), and the horizontal swing causes the right side clutch wire W to swing to the right side. The right clutch arm 79 swings via the clutch operating rod 80, the connecting shaft C1 of the left side clutch / brake mechanism C connected to the base end of the arm 79 rotates, and the side clutch mechanism of the left rear wheel 9 When the connection shaft C1 is connected / disconnected and the connecting shaft C1 further rotates, the left side clutch / brake mechanism C performs the braking action as described above, and the braking force can be applied to the rear wheel 9.

That is, when the left side clutch lever 4a is operated, the braking force acts on the left rear wheel 9, and when the right side clutch lever 4b is operated, the braking force acts on the right rear wheel 9.

The case where the left and right side clutch levers 4a, 4b are actually used will be described below.

As shown in FIG. 3, the passenger management machine A has a headland K.
When the driver reaches the front of the vehicle, the driver dismounts and moves forward, stands sideways, grasps the side clutch handle H and lifts it upward to float the front wheels 7,7, and the passenger management machine A with the rear wheels 9,9.
Only support.

In this case, since the vehicle turns right, if the right side clutch lever 4b is operated and the brake is applied to the right rear wheel 9, the passenger management machine A can be turned slightly around the right rear wheel 9. , It is easy to get into the adjacent strip.

Therefore, as is clear from FIG.
The length of uncultivated land can be reduced, and the effective acreage of the field J can be increased.

Further, unlike a steep turn made by steering with the steering wheel 13, there is no danger of falling and it is safe.

The case where the left and right side clutch / brake mechanisms C, C are turned by operating the steering handle 13 will be described below.

When the steering handle 13 is rotated,
As described above, the steering arm 71 horizontally swings at a predetermined steering angle, and the front wheels 7 and 7 can be steered at a predetermined turning angle.
The buffer rod 76 moves back and forth in conjunction with the horizontal swing of the steering arm 71, and the forward / backward movement of the buffer rod 76 causes the crank 78 to horizontally swing in the direction opposite to the swing direction of the steering arm 71.

The horizontal swing of the crank 78 swings the left and right clutch arms 79, 79 via the left and right side clutch operating rods 80, 80, and the left and right side clutch / brake mechanisms connected to the base ends of the arms 79, 79. The connecting shafts C1 and C1 of C and C rotate, and the side clutch mechanism of the rear wheels 9 and 9 engages and disengages.

When the steering handle 13 is further rotated, the swing of the steering arm 71 and the crank 78 is increased, and the connecting shaft C of the left and right side clutch / brake mechanisms C, C is connected.
The turning angle of 1, C1 is also increased, and the left and right side clutch / brake mechanisms C, C perform the braking action as described above, and the braking force can be applied to the rear wheels 9,9.

For example, when the steering handle 13 is rotated to the left (counterclockwise), the steering arm 71 swings to the right (clockwise), and the left and right drag rods 72, 73 move.
The front wheels 7,7 act on the towing side and the pushing side, respectively.
Turn to the left (counterclockwise) to allow left turn.

When the steering handle 13 is further rotated to the left, the braking mechanism of the left side clutch / brake mechanism C acts and the braking force acts on the left rear wheel 9.

At this time, the braking force can be set arbitrarily by the buffer spring 81 provided in the middle of the buffer rod 76, and the transmission 31 can be prevented from being damaged by the stroke of the buffer rod 76 or the like. can do.

With the above structure, the brake turn can be easily performed only by operating the steering wheel 13 during normal running, and a safe small turn is possible without fear of erroneous operation, and the feel at the time of turning is improved. .

Further, in the passenger management machine A according to the present invention, the prime mover section 6 is provided with the engine 30 and the transmission 31, and further, the engine 30 and the transmission 31 are provided.
It is also characterized in that it is arranged directly above the rear wheels 9, 9.

(Motor Section) That is, in this embodiment, the engine section 6 is constructed by arranging the engine 30 and the transmission 31 in a vertically stacked state, and as shown in FIG. Output shaft 30a of the transmission and the input shaft 31a of the transmission 31 by the interlocking belt 32
The front differential case 8 is connected to the transmission part 31 via the drive shaft 35 (see FIG. 4) so that four-wheel drive can be performed.
36 is a tension roller.

Further, a pair of left and right stays 41, 41 are provided at the rear end portions of the left and right side walls of the engine 30 so as to project rearward, and a cylindrical support shaft 42 is provided between the rear ends of the stays 41, 41 in the left-right width The power take-off shaft 43 is supported in the tubular support shaft 42, and an input pulley (not shown) is attached to the left end of the power take-off shaft 43. And output shaft 30a of engine 30
A transmission belt 46 is wound around a tension roller 47 between the interlocking pulley 33 and an output pulley mounted in parallel therewith.

As described above, by disposing the engine 30 and the transmission 31 directly above the rear wheels 9 and 9, the overall length of the machine can be shortened and the entire structure can be made compact.

Also, since the heavy load concentrates on the rear wheels 9, 9, lift the side clutch handle H to lift the front wheels.
It is easy to float 7,7.

Further, the ground height of the machine body can be sufficiently secured, and the vehicle can travel across the ridges and the like of the field J.

(Other Configurations) Other configurations of the passenger management machine A according to the present invention will be described below.

In the tiller implement 2 connected to the rear end of the body frame F, a work unit side hitch 61 is attached to the front end of the tiller frame 60, and the tiller transmission case 62 extends vertically in the middle.
Is attached, and the tail wheel 63 is attached to the rear end.

The input shaft is attached to the upper part of the tillage transmission case 62.
48 is provided with its axis extending in the left-right width direction, and a cultivating shaft 65 that extends in the left-right width direction is rotatably supported on the lower portion, and a cultivating claw 69 is attached to the cultivating shaft 65. Reference numeral 66 is a tilling cover, and 67 is a rotation locus of the tilling claw.

Further, as shown in FIG. 2, a transmission mechanism 49 is detachably interposed between the right end portion of the power take-off shaft 43 and the right end portion of the input shaft 48 of the tillage implement 2. However, the power transmission mechanism 49 is configured to be able to transmit power from the engine 30 to the tilling implement 2.

The transmission mechanism 49 is composed of a front transmission case 50 and a rear transmission case 51. The front end of the front transmission case 50 is interlocked with the right end of the power take-off shaft 43, and the front transmission case 50 is connected. The rear end and the front end of the rear transmission case 51 are interlockingly connected to each other via a center-folding support shaft 52 so as to be convexly bent upward.

In FIG. 1, reference numeral 19 denotes a power transmission unit for the front working unit which is detachably attached to the lower portion of the transmission case of the transmission 31. For example, when a working machine or the like is provided on the front side, 19 is mounted as necessary. Then, the power can be transmitted from the transmission 31 to the working machine on the front side.

Further, 21 is a main gear shift lever provided on the left side position of the driver's seat 20, 22 and 23 are levers for raising and lowering a hitch portion and auxiliary shift levers arranged on the right side position of the driver's seat 20, and 99 is a These are the steps for getting in and out on the left and right sides of the steering column 11.

[0086]

EFFECTS OF THE INVENTION A driving section and a prime mover section are arranged on a vehicle body frame to which a working machine can be connected at a rear end, and front wheels and rear wheels are attached. Braking is possible via the side clutch / brake mechanism.In addition, a side clutch handle is attached to the front end of the body frame facing forward, and the left and right side clutch / brake mechanisms are respectively attached to the left and right sides of the side clutch handle. By installing the interlocking left and right side clutch levers, the driver gets off and lifts the side clutch handle to support the aircraft with only the rear wheels, and by operating the left and right side clutch levers appropriately, it is possible to make a very small turn, It is easy to get into the adjacent strip across the ridge, and moreover, safe turning movement is possible.

Therefore, the uncultivated area in the field can be remarkably reduced, and the effective acreage can be increased.

Further, since the front wheels are interlocked with a steering wheel provided in the driving section to form a steering wheel, and the side clutch / brake mechanism is interlocked with steering of the steering wheel, When traveling, a brake turn can be easily performed only by operating the steering wheel, a safe small turn is possible without fear of an erroneous operation, and the feel at the time of turning is improved.

Further, the side clutch handle is easy to operate because the left and right base ends are attached to the machine body frame and are formed in a loop shape projecting forward.

Further, by disposing the engine and the transmission immediately above the rear wheels, the overall length of the machine can be shortened and the entire size can be made compact.

Further, since the heavy load is concentrated on the rear wheels, it is easy to lift the side clutch handle and float the front wheels.

Further, it is possible to secure a sufficient ground height of the machine body, and it is possible to travel across ridges and the like in the field.

[Brief description of drawings]

FIG. 1 is an overall side view of a passenger management machine according to the present invention.

FIG. 2 is an explanatory diagram according to the same plan view.

FIG. 3 is an explanatory diagram showing a turning state of the passenger management machine.

FIG. 4 is an explanatory view showing a side clutch / brake mechanism.

FIG. 5 is an explanatory view of a front wheel steering mechanism in a side view.

FIG. 6 is an explanatory diagram according to the same plan view.

FIG. 7 is an explanatory diagram showing a turning state of a conventional passenger management machine.

[Explanation of symbols]

 A Passenger management machine C Side clutch / brake mechanism D Link type transmission mechanism F Body frame H Side clutch handle W Side clutch wire 1 Running part 4a Left side clutch lever 4b Right side clutch lever 7 Front wheel 9 Rear wheel 13 Steering handle 30 Engine 31 Transmission

Claims (4)

[Claims] 1. A driving section (5) and a prime mover section (6) are arranged on a body frame (F) to which a working machine can be connected at a rear end, and front wheels (7), (7) and a rear wheel are arranged. The wheels (9) and (9) are attached, and the rear wheels (9) and (9) are respectively braked through the left and right side clutch / brake mechanisms (C) and (C) by the operation of the driving section (5). In addition, the side clutch handle (H) is attached to the front end of the body frame (F) facing forward, and the left and right side clutch / brake mechanism (C) is attached to the left and right sides of the side clutch handle (H). The passenger management machine is characterized in that left and right side clutch levers (4a) and (4b) which are respectively interlocked with the (C) are attached. 2. The front wheels (7), (7) are interlockingly connected to a steering handle (13) arranged in a driving section (5) to form a steering wheel, and the steering wheel (13) is steered. The passenger management machine according to claim 1, wherein the side clutch / brake mechanism (C), (C) is interlocked with. 3. The engine part (6) comprises an engine (30) and a transmission (31), and the engine (30)
3. The passenger management machine according to claim 1 or 2, wherein the transmission and the transmission (31) are arranged immediately above the rear wheels (9), (9). 4. The side clutch handle (H) has a left and right base end portions attached to the vehicle body frame (F) and is formed in a loop shape projecting forward.
The passenger management machine according to any one of to 3.