JP2935983B2 - Self-propelled green compaction vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-propelled type in which a golf wheel is self-propelled in a golf course by running wheels, the running wheels are raised on a green, and a compacting roller is grounded to maintain a green surface. The present invention relates to a green compaction vehicle.

[0002]

2. Description of the Related Art Rollers for smoothing and damaging the surface of a turf caused by play and renewal work on the surface of a green by a rolling roller. Many types of hanging devices are used, but they are roughly divided into self-propelled types that move to destinations by themselves, and types that are loaded and transported by other vehicles It is divided into The latter is simple in structure because it does not have the components necessary for movement, and it is easy to break down and maintain.On the other hand, it requires a separate vehicle for transportation, and the effort and time lost in unloading from the carrier is inevitable. I want to. In addition, since the weight of the rolling device needs to be considerably increased in order to enhance the rolling effect, the handling thereof involves considerable danger. On the other hand, the former is equipped with traveling wheels suitable for movement, and after reaching the destination, the rolling roller is grounded to start the roller work, so that no other transportation means is required, and However, there is a problem that the structure is complicated, the operation and maintenance are complicated, and cost and skill are required. Further, as a problem common to both types, the steering accuracy is not always good, and the twisting of the turf surface due to the difference in the inner and outer circumference lengths of the arc drawn by the roller hanging device due to the direction change significantly impairs the state of the green surface. there were.

[0003]

SUMMARY OF THE INVENTION A self-propelled compaction vehicle according to the present invention can easily and accurately steer a vehicle body in a desired direction, and can perform traveling to a destination and compaction work on a green. Switching can be done easily in a short time without spending effort, roller rolling can be done quickly and without waste, improving work efficiency while reducing worker fatigue, and playing without turf disturbance or twisting It is to form a suitable green.

[0004]

[MEANS FOR SOLVING THE PROBLEMS] In order to solve such a problem,
The self-propelled green compaction vehicle has at least three rollers, which are smaller in diameter and longer in the axial direction than the running wheels, and at least two of them are elastic and durable, such as rubber and polyurethane. It is covered with a soft material that has a high degree of slip and prevents slipping on the green, enabling stable driving and reliable steering. In order to further enhance these functions, it is desirable to increase the number of compaction rollers coated with a soft material. However, usually, two rubber-coated rollers enable stable running and steering without sufficient slip. There is no particular limitation on the method of steering the compaction roller. For example, the rotating shaft of the roller is set on a frame by a suitable support means, and a shaft protruding upward is provided at a substantially central position of the frame, and the chassis can be rotated on the chassis. , And the frame may be rotated and tilted around the shaft with respect to the chassis by a link mechanism from the steering shaft. Also, a hydraulic motor or the like is provided at one end of the frame on which the compaction roller is set, so that the compaction roller can be run on a green by applying a rotational driving force about a rotation axis to the compaction roller. At least another one of the compaction rollers has an outer surface made of a hard material such as a metal or a ceramic or a soft material such as a rubber in order to enhance a roller hanging effect. In particular, an aluminum material or the like is preferable as the hard material. Material. Dividing the hard or soft roller into a plurality of portions in the longitudinal direction is particularly important as an elemental technology of the present invention. Here, the number of divisions and the division length of the hard or soft roller are not particularly limited, but generally, when the roller length is around 1 meter, the roller is divided into four parts of approximately equal length. Is preferred. The hard or soft roller divided in the longitudinal direction is installed in a fixed state in which the rotation axis is not inclined with respect to the chassis, and the rotation of the roller whose surface is covered with rubber causes the self-propelled body to move with the rotation of the roller. It is rotated passively. Each of these compaction rollers has an outer shape whose diameter decreases toward the end, and the rotation axis of the traveling wheel and the rotation axis of the compaction roller cross each other substantially in parallel or at a right angle. Placed in

To enable the self-propelled green compaction vehicle to be steered, it is necessary to steer at least one of the compaction roller and the traveling wheel. , The two rollers may be steerably connected by one steering device, and the respective steering operations may be switched according to each work situation. As the switching mechanism of the steering operation, an arbitrary mechanism can be selected. However, as described in the embodiment of the present invention, as an example, there is no special mechanism for switching, and the traveling wheels are connected to the steering mechanism and the steering mechanism. The chain may be connected by a chain, and the connection / disconnection of the steering operation may be performed based on the difference between the elevating behavior of the traveling wheel and the tension state of the chain.

The traveling wheels of the self-propelled green compaction vehicle have the necessary number of wheels arranged on the outer edge of the chassis to keep the vehicle body stable, and drive both right and left coaxially arranged wheels at the same speed. Then, the remaining wheels having no driving force are rotatably held and connected to the steering shaft. When the traveling wheels are raised to the floating position, the compaction roller provided at the lower central portion of the chassis comes into contact with the ground. All wheels are operated simultaneously by link connection using one hydraulic cylinder and piston to raise and lower the traveling wheels, and are stably held at two positions, the lowest contact position and the highest floating position. . However, as long as the stability of the vehicle body is maintained normally, each traveling wheel may be raised or lowered individually or sequentially in a plurality of groups. It is preferable to use a hydraulic mechanism having excellent stability for all driving means such as running and raising / lowering operations of the wheels, and a gasoline engine, an electric motor or the like may be used as a power source in addition to a diesel engine.

[0007]

[Function] The turf surface on the green requires a smooth finish, but if the steering operation of the roller is incorrect during the roller hanging work, the turf surface may be twisted, or the turf surface may be bitten when it is severe. In the compaction roller of the present invention, as in the case of traveling on the green, the shaft angle of at least two long-sized compaction rollers coated with a soft material such as rubber by the steering handle is inclined by the steering handle, thereby achieving accurate and accurate operation. Smooth steering operation can be easily performed, and another hard or soft compaction roller is divided into a plurality of parts of approximately equal length in the longitudinal direction, and each part can freely rotate. Thus, the difference in the inner and outer circumference lengths of the circular motion caused by the direction change operation operated by the steering device is absorbed to assist the steering effect, and at the same time, the above-mentioned conventional problem of the green grass surface damage is solved. Further, by forming the both ends of the pressure roller into a tapered shape that slightly reduces in diameter toward the end, excessive dents on the turf surface when the roller hooks overlap are reduced, and a smooth finish is secured.

[0008] By moving up and down the support arm supporting the traveling wheels, the stability of the vehicle body is maintained, the traveling wheels are moved to the installation position and the floating position, and the transition between the movement between the greens and the roller hanging operation on the greens is performed. Can be easily and smoothly performed. As one of the elevating mechanisms, for example, as will be described later as an embodiment, a link mechanism for linking the elevating operation of all the supporting arms and one hydraulic cylinder and piston fixed to the chassis are simultaneously operated simultaneously. While maintaining the stability of the vehicle body, the transition between the two positions of the ground contact position and the floating position can be smoothly performed in a short time, and the support arm can be securely fixed at both positions. In the case of the green compaction vehicle of the present invention, the number of running wheels is not particularly limited, but generally, it is necessary to avoid a deep rut due to overlapping traffic of wheels on an unpaved passage in a golf course. It is more preferable to use three. Also, the turning radius is small.

In the self-propelled green compaction vehicle, the arrangement of the traveling wheels and compaction rollers is not particularly limited.
In general, both the running wheel and the compaction roller will have the rotating shaft disposed in the left-right direction with respect to the control seat, as in a normal vehicle. However, when the vehicle body shape is long in the front-back direction of the seat, in order to increase the roller mounting area for one time, a long compaction roller is housed under the vehicle body to prevent damage from falling objects from above. It is also possible to arrange the rotation axis of the compaction roller in the front-back direction of the seat according to the length of the vehicle body. In the present embodiment, an example is shown in which the rotation axis of the traveling wheel is arranged in the left-right direction of the seat, and the rotation axis of the compaction roller long in the axial direction is arranged in the front-rear direction of the seat. With this arrangement,
The movement of the vehicle body on the green is in the left and right direction of the pilot,
The operator can proceed with the work while observing the turf surface directly below without any obstacle such as a steering wheel, which is suitable for the roller hanging work.

[0010] The steering handle of the vehicle for rolling compaction of the present invention comprises:
The traveling front wheel and two chains are connected via a steering shaft, and the roller mounting frame of the compaction roller is connected by a link mechanism. When the front wheels for traveling are in the traveling position, the two right and left connecting chains extending from the steering shaft to the support arm of the front wheels are almost in a tension state, and the rotation of the steering shaft pulls one of the right and left chains to the front wheels. Is transmitted. This movement is also transmitted to the compaction roller connected to the lower portion of the steering shaft by the link mechanism at the same time, but since the compaction roller is not in the ground contact state, it has no steering effect. When the traveling wheel moves to the levitating position, the front wheel support arm rotates toward the chassis and approaches the steering shaft to loosen the connecting chain,
The rotation of the steering shaft is absorbed by the looseness of the chain and is not transmitted. On the other hand, when the traveling wheel moves to the levitating position, the compaction roller comes in contact with the ground, and the rotating shaft of the compaction roller is inclined by the operation of the steering shaft, so that the direction can be changed on the green.

[0011] In the self-propelled green compaction vehicle of the present invention, it is preferable to provide a steering seat above the vehicle body. The operator sits in this high position for steering, secures a forward view that was previously obstructed by a part of the vehicle body and was hard to see, steered and observed the turf surface condition, In order to accurately connect the roller hooking end faces during reciprocating movement on the green, especially when proceeding on a down slope, seeing from a high viewpoint reliably reduces duplication and omission of roller hanging work And improve the leveling efficiency and leveling. In addition, walking during work is not required, and the fatigue of the worker is greatly reduced. Since the operator can be mounted on the vehicle, the effect of increasing the pressure of the roller is increased by the weight of the operator.

[0012]

1 shows a self-propelled green compaction vehicle 1 according to the present invention.
Is shown in a schematic perspective view. In this vehicle, a hydraulic motor is provided on a rotating shaft via a hydraulic circuit by an engine 3 provided behind a cockpit 2 for a worker and by operating an electromagnetic valve changeover switch on an operation panel 4 on the side of the cockpit. Hydraulic pressure is sent to rear wheels 6 and 6, which are two traveling wheels provided, to travel forward and backward. On the green, as shown in FIG. 2, the steering front wheels 5 and the rear wheels 6, 6, which are running wheels, are raised to a floating position diagonally above the chassis, and three rolling rollers 22 provided at the lower part of the vehicle body. , 22 ′, and 23, the roller hanging operation is performed while moving in the lateral direction. The cockpit 2 is provided in the upper part of the vehicle body.
6, 6 and 6, and the traveling wheels 5, 6, and 6 are raised to the floating position at the destination, and are self-propelled by the compaction rollers 22, 22 ', and 23. Work can proceed. In particular, when the traveling direction is downhill, a wide field of view from the cockpit 2 is extremely effective for operating the vehicle body. The steering handle 7 is provided with operation grips 8 and 8 ′ at both ends, and a steering shaft 9 slightly curved toward the cockpit 2 is rotatably supported on the chassis 10 on the way. As shown in FIG. 3, an operation arm 11 fixed to a lower portion of a steering shaft 9 for steering the front wheel 5 and extending in the left-right direction, and a rotating shaft 14 that supports the front wheel support arm 16 on a front wheel support bracket 15. The operated arm 13 fixed to the upper end is arranged at a position facing the operated arm 13. The operating arm 11 and the operated arm 13 are connected by two chains (an example of a cord-like tool) 12 and 12 ′ stretched substantially linearly between both ends thereof, and a handle is provided. The turning operation of the grip is transmitted to the front wheels 5 to steer the vehicle body. The front wheel support bracket 15 is supported by a shaft 18 on a bearing block 17 provided on the front surface of the chassis 10,
When the front wheel 5 is moved from the contact position shown in FIG. 1 to the floating position shown in FIG. 2, the front wheel 5 is rotated clockwise about the shaft 18 as a rotation axis as described later. The steering shaft 9 extends below the chassis 10 shown by a broken line, and has a one-way arm 1 at a lower end.
9 is fixed in parallel to the operation arm 11 and passes through link rods 20 and 21 and rubber-coated pressure rollers 22 and 2
It is connected to a bracket 25 provided at the rotation center position of the 2 ′ mounting frame 24. The mounting frame 24 is
A rotating shaft 26 projecting upward from the center point of the bracket 25
As a result, it is fixed to the chassis 10.

The compaction roller used in this embodiment is composed of two rubber-coated drive rollers 22, 22 'and one fixed roller 23, which are parallel to each other and perpendicular to the rotation axis of the traveling wheel. To place. Fixed roller shaft 3
Reference numeral 4 designates two rubber-coated rollers 2 fixed to the chassis 10 by a bracket (not shown) and having no driving source.
2, 22 'are supported by a pair of brackets 28, 28', 29, 29 'projecting from the opposite ends of the roller mounting frame 24 on both sides of the rotating shafts 27, 27'. Operation of handle grips 8 and 8 '
0 in the direction of arrow A, which is converted into a swinging motion of the roller mounting frame 24 in the direction of arrow B, inclining the rotating shafts 27, 27 'of the rubber-coated pressure rollers 22, 22', and Steering is performed. The two rubber-coated rollers are connected by gears 32 and 32 ′ fixed to a rubber-coated roller rotation shaft driven by a chain 33 from a gear 31 on a rotation shaft of a hydraulic motor 30 fixed to one end of the mounting frame 24. To move the vehicle body in the lateral direction of the worker. Here, when the handle grips 8 and 8 'are turned, as shown in FIG. 4, only three compaction rollers are schematically shown. In the case of traveling in the left-hand direction, in the direction indicated by the left end of the handle 7, in the case of traveling in the right-hand direction. The body turns slowly in the opposite direction indicated by the right end of the steering wheel 7.

Here, the reason why the number of rubber-coated rollers is two is that the rolling pressure is dispersed due to the increase in the number of rollers,
This is to obtain a mild pressing effect and to enhance the steering effect. The fixed roller 23 is divided into four portions in the longitudinal direction of the roller in order to prevent the turf surface from being twisted due to a difference in the inner and outer circumferences of the arc motion generated by the steering. As shown in FIG. 6, each roller is supported on a common shaft 34 fixed in the longitudinal direction of the vehicle body by a suitable free rotating means 51 such as a bearing or dry metal, and does not interfere with each other's rotation. If the distance is provided by interposing a collar or the like having an appropriate thickness, for example, and the displacement in the axial direction is also prevented by the collar or the like from both sides, the difference in inner and outer perimeters caused when the traveling direction is curved is reduced by four parts. It is smoothly absorbed by the difference in the number of rotations of the free-rotating rollers, and not only enhances the steering effect but also does not cause an abnormal portion on the turf surface, so that an excellent roller-engaging effect can be obtained. Here, the number of divisions of the fixed roller is not particularly limited, and the number of divisions should be increased as the roller is lengthened. In the case of this embodiment in which the roller length is set to about 1000 mm,
Four divisions were preferred. If the roller is too long, it may not be possible to follow the delicate angular regulation on the green, so that the length and the number of divisions of this embodiment are usually preferable. As the outer shape of the compaction roller, it is preferable that the central portion has a flat cylindrical shape and both ends are slightly reduced in diameter. This is to prevent both end portions of the turf on which the roller is hung from being pressed more strongly than the central portion by reciprocating roller rolling. For this purpose, for example, a length of about 1000 mm and a diameter of the central part of about 150 mm
In the case of the roller having a diameter of about 100 to 200 mm at both ends, the diameter is preferably reduced by about 10 ± 2 mm. As shown in FIG. 6, the fixed compaction roller of the present embodiment divides a fixed roller having a total length of 960 mm into four portions having substantially the same length. The center part side of both ends 23 '' is 140 mm of the same diameter, and 130 mm from the end.
A good result was obtained by joining a cylinder and a truncated cone of which the diameter was gradually reduced from the part of mm and setting the end diameter to 130 mm. However, in order to attach importance to the uniformity of the finished surface of the green, if it is necessary to roll carefully, the two parts 23 '' on both sides are tapered so as to reduce the entire diameter, and the overlapping part is made large. Rollers may be used. This shape having a reduced diameter at both ends should be applied not only to a fixed roller but also to a rubber-coated roller, so that a more favorable rollering effect can be obtained.

FIG. 5 shows a mechanism for elevating the traveling wheels. The rear wheels 6, 6 'supported at one end of the support arms 36, 36' diagonally rearward of the vehicle body are fixed on shafts of hydraulic motors connected in series by respective oil supply pipes. Support arm 36, 3
6 'are connected by a shaft 35 and the shaft 3
In at least two places on both sides of 5, it is rotatably supported by bearing blocks 37, 37 ′ fixed to the chassis 10. Each of the two protruding blocks 38 and 39 provided at an intermediate portion of the shaft 35 is provided with a small hole, and the block 38 is formed by a small diameter pin passing through each of the small holes to form the piston rod 40 of the hydraulic cylinder 41. The tips are connected. The piston rod 40 is held at the foremost position by the pushing pressure of the cylinder 41 fixed to the chassis, and the rear wheel support arms 36 and 36 'are fixed to the ground contact position. , The shaft 35 is rotated in the counterclockwise direction via the block 38, and the rear wheel support arms 36, 36 'connected to the shaft 35 are circularly moved in the same direction.
Lift 6 'to the floating position. The rotational movement of the shaft 35 in the counterclockwise direction pushes the L-shaped rod 44 connected by a joint to the rod 43 having a U-shaped joint connected to the small hole of the bracket 39 by a small diameter pin in the front wheel direction. , The intermediate shaft 4 supported by the bearing bracket 45
6 is rotated clockwise, and the L
Push the U-shaped rod 47 toward the front wheel,
The rod 49 connected by 8 is pushed forward, and the rod 4
Push the tip of the lever 50 pin-coupled with the tip of 9,
It is rotated clockwise around the shaft 18. Since the shaft 18 supported by the bearing bracket 17 projecting from the front of the chassis is connected to the rear end surface of the front wheel support bracket 15, the rotation of the lever 50 in the clockwise direction about the shaft 18 causes the support bracket 15 to rotate clockwise. By rotating in the needle direction, the front wheel 5 together with the front wheel support arm 16 is lifted to the floating position and fixed. When the traveling wheel is raised to the floating position, the compaction roller provided on the lower surface of the chassis is grounded, and is ready for roller work. By the rotation of the support bracket 15, the two chains 12, 12 'extending from the arm of the steering shaft 9 are loosened, lose the function of transmitting the rotation of the steering shaft, and the front wheel 5 is affected by the steering mechanism in the floating position. It is kept stationary without receiving it. To finish the roller work on the green and move to the next green, move the hydraulic cylinder 4
When the first piston rod 40 is moved to the foremost position, the above-described link motion proceeds in reverse, and the traveling wheels held at the floating position are all returned to the traveling position and fixed, and the compaction roller is separated from the ground. The vehicle is kept in a state where it can run and is ready to run. All driving forces of the self-propelled green compaction vehicle are provided on an operation panel 4 by operating an engine 3 mounted behind the seat 2 with a pedal (not shown) arranged in front of the seat. By changing the switch, the maintenance of the green by running forward and backward, raising and lowering the running wheel, and running the roller can be performed easily, efficiently, and the finished state is good, compared to the conventional roller compaction work. 3
The time can be reduced by more than a certain amount, and further, the fatigue caused by the labor of the worker can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a traveling state of a self-propelled green compaction vehicle.

FIG. 2 is a perspective view showing a state in which the self-propelled green compaction vehicle is roller-mounted.

FIG. 3 is a schematic perspective view for explaining a steering mechanism of the self-propelled green compaction vehicle.

FIG. 4 is an explanatory view showing a principle of steering by a pressure roller on a green of the self-propelled green vehicle.

FIG. 5 is a schematic perspective view for explaining a traveling wheel elevating mechanism of the self-propelled green compaction vehicle.

FIG. 6 is a side sectional view of a hard surface compaction roller divided into four parts.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Self-propelled green compaction vehicle 2 Seat 3 Engine 4 Operation panel 5 Running front wheel 6 Running rear wheel 7 Steering handle 8, 8 'Steering grip 9 Steering axis 10 Chassis 11, 13 Steering arm 12, 12' Steering Chain 14 Front-wheel steering rotary shaft 15 Front-wheel support bracket 16 Front-wheel support arm 17 Bearing block 18 Front-wheel support bracket shaft 19 Rear-wheel steering arm 20, 21 Rear-wheel steering rod 22, 22 'Rubber-coated roller 23 Fixed Roller roller 24 Rubber-coated roller roller mounting frame 25 Bracket 26 Rotary shaft 27, 27 ', 34 Roller roller rotary shaft 28, 28', 29, 29 'Support bracket 30 Hydraulic motor 31, 32, 32' Gear 33 Chain 35 shaft 36, 36 'rear wheel support arm for traveling 3 7 Bearing block 38, 39 Block 40 Piston rod 41 Hydraulic cylinder 42, 48 U-shaped joint 43 Rod 44, 47 L-shaped rod 45 Bearing bracket 46 Intermediate shaft 49 Rod 50 Lever 51 Bearing 52, 52 'Color

Claims (6)

(57) [Claims] 1. A self-propelled green compaction vehicle having at least three small-diameter long-axis compaction rollers and capable of running with the plurality of compaction rollers, wherein at least two of the compaction rollers are provided. The book has a peripheral surface covered with a soft material, and is configured as a drive and steering roller that can be driven and steered, and at least one other is divided into a plurality of partial rollers in the longitudinal direction so as to be rotatable with respect to each other. A self-propelled green compaction vehicle composed of divided rollers made of hard or soft material. 2. The self-propelled green compaction vehicle according to claim 1, wherein the divided rollers are constituted by four or more partial rollers divided in a longitudinal direction so as to be rotatable relative to each other. 3. The self-propelled roller according to claim 1, wherein each of the rolling rollers has a cylindrical shape having a flat central portion, and has an outer shape whose diameter decreases toward both ends. Green compaction vehicle. 4. A traveling wheel for moving and traveling, wherein the traveling wheel can be raised and lowered between a contact position where the traveling wheel descends and makes contact with the ground and a floating position where the traveling wheel rises and floats above the ground. The self-propelled green compaction vehicle according to any one of claims 1 to 3, wherein the vehicle can be fixedly maintained. 5. A driver's seat is provided in an upper part of a vehicle body, and when viewed from a position where the driver sits on the driver's seat, a rotation axis of the traveling wheel is directed to the left and right, and a rotation axis of the roller is set in a front-rear direction. The self-propelled green compaction vehicle according to any one of claims 1 to 4, wherein the self-propelled green compaction vehicle is arranged toward the vehicle. 6. An operated arm that supports a steerable steering wheel of the traveling wheels, a steering shaft for steering the steered wheel, and an operation arm fixed to the steering shaft. The operated arm and the operation arm are interlocked with a plurality of cords that transmit an operation force in a pulling direction so that the steering wheel can be steered left and right by a left-right rotation operation of the steering shaft. When the steering wheels are in the ground contact position, all the cords are substantially in a tension state, and when the steering wheels are in the floating position, all the cords are in a relaxed state. The self-propelled green compaction vehicle according to claim 4 or 5, wherein