JP2870387B2 - Belt-type lawn feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for winding up a lawn grown in a mat shape and then rewinding the lawn to spread the lawn on the ground.

[0002]

2. Description of the Related Art In order to facilitate the work of collecting grass after growing it and transplanting it to another place, soil was put on a net-like rug, sowed grass seeds were sown, and the grass was grown in a mat shape. rear,
The present applicant has already applied for a technique of winding the rug and collecting the lawn and transplanting it to another place. In addition, a technique has been disclosed in which a base is made by laying fine bark flakes, and a lawn is grown on the base to form a mat.
3-75035).

[0003]

However, in order to handle the lawn that has been rolled up, and in particular to efficiently perform the laying operation, it is necessary to take some measures. It is not enough to simply unwind the lawn that has been rolled up by hand. It is troublesome and troublesome. It is also conceivable that gears are provided at both ends of the winding drum and the winding drum is rotated by a motor. However, the apparatus is complicated and large in size by the motor and the gears.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and when unwinding and paving the wound lawn, it is not necessary to provide a separate power source such as a motor, and the manual operation can be performed very little. An object of the present invention is to provide a belt-type lawn feeder that does not need to be relied on.

[0005]

Means for Solving the Problems The present invention has been made to achieve the above object, and the invention of claim 1 is to provide a cart moving by a plurality of wheels and a mat-like lawn in a roll shape. A winding drum for winding, and a U-shaped bearing vertically provided on the carriage to support both ends of a drum shaft of the winding drum in a vertically movable manner .
A center pulley provided coaxially with the axle of the wheel, and a wheel provided on the bogie, in contact with the outer periphery of the center pulley and provided with the center pulley.
Touching the inner peripheral side, the center
Idler pulley for rotating the axle through a lead
When a first elongated pulley provided on the axle, and a second elongated pulley provided on the <br/> carriage, together with these first and wound around the second elongated pulley ,in addition
The mat-like lawn wound on the winding drum
Is mounted, and is rotated according to the rotation of the wheels to form the mat.
And an endless belt that feeds out a turf-like lawn .

According to a second aspect of the present invention, a center gear is used instead of the center pulley, and an idler gear is used instead of the idler pulley.

[0007]

According to the first aspect of the present invention, the wheels rotate, and the endless belt wound around the two long pulleys rotates to rotate the lawn in a roll form. The rolled lawn is unwound by this rotation, sent out to the ground, and spread. Since the wheel, idler pulley, center pulley and first long pulley rotate at substantially the same peripheral speed, the moving speed of the bogie by the wheels and the lawn sending speed by the long pulley are substantially the same.

According to the second aspect of the present invention, the center gear performs the same function instead of the center pulley of the first aspect, and the idler gear performs the same function instead of the idler pulley.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. The mat-like lawn 1 is wound on the winding drum 3 in advance with the grass surface inside.
The truck 5 of the device of the present embodiment has two pairs of wheels 7 and 9 made of solid tires and can move. The pair of wheels 7
It is a steering wheel, and the direction can be changed by a steering handle 11 to perform steering. The pair of wheels 7 are not completely parallel to each other in the plan view (FIG. 2),
The right sides in the figure approach each other by a small angle θ. Thereby, the straightness of the carriage 5 is maintained. The steering handle 11 can be maintained in a straight running state, that is, in a center position, by clicking with a stop notch. The cart 5 is provided with a handle 13 on the right side in the figure, and the operator pulls the handle 13 to move. The other pair of wheels 9 is provided around the axle 15.

That is, a center pulley 17 is provided coaxially with both ends of the axle 15 by a key and a key groove 18. An idler pulley 19 is provided in contact with the outer periphery of the center pulley 17. Three of these idler pulleys 19 are arranged at equal intervals in the circumferential direction, and are fixed to the carriage 5. This fixing is performed by tightening the idler pulley bearing plate 21 with a bolt nut 25 provided through a bolt hole 23 (FIG. 3) (FIG. 4). That is, the shaft 27 is provided on the idler pulley bearing plate 21 at a position corresponding to the three idler pulleys 19,
The idler pulley 1 is connected to the shaft 27 via a bearing 29.
9 is rotatably mounted, and the lock nut 31 prevents the shaft 9 from coming off in the axial direction. The idler pulley bearing plate 21 is fixed to the frame 5A of the carriage 5 by bolts and nuts 25.

Then, these three idler pulleys 1
The inner peripheral side of the ring-shaped wheel 9 is in contact with the outer peripheral side of 9. The wheels 9 are rotatably attached to axle portions 33 formed at both ends of the axle 15 via bearings 35. The bearing 35 is pressed by a bearing holder 39 via a bush 37,
The lock nut 41 prevents the nut from coming off in the axial direction. The ring-shaped thickness of the wheel 9, that is, the thickness t in the radial direction is
As described later, it is desirable that the size be as small as possible. Thus, the wheel 9 and the axle 15 can rotate relative to each other. The wheel 9 and the center pulley 17
Are 2: 1.

The axle 15 has a first long pulley 43.
Are coaxially fixed. This first long pulley 43
Is substantially the same as the outer diameter of the center pulley 17. A second long pulley 45 is provided on the carriage 5 in the same vertical position as the first long pulley 43 and in parallel with the first long pulley 43. An endless belt 47 is wound around these two long pulleys 43 and 45. Belt 47
Is a non-slip type that is unlikely to cause slippage on the two long pulleys 43 and 45, and has sufficient strength. By having sufficient strength, the heavily rolled lawn 1 can be placed on the belt 47.

The second long pulley 45 is urged by a spring 49 to the cart 5 in the right direction in the drawing, that is, in a direction away from the first long pulley 43. The spring 49 forms a belt tension adjuster 51 that can adjust the biasing force.
This adjustment is made by turning the screw 52. The outer diameter of each of the long pulleys 43 and 45 is slightly increased toward the center in the longitudinal direction, and has an expanded shape. Due to this expanded shape, the endless belt 47
Can be rotated without causing displacement.

A U-shaped bearing 53 is provided at the center of the bogie 5 in the front-rear direction.
Is provided. The U-shaped bearing 53 is used for the winding drum 3
For supporting both ends of the drum shaft 55. In other words, as the lawn 1 in the form of a roll is unwound and its diameter becomes smaller, the drum shaft 55 moves from above to below.
The mold bearing 53 supports both ends of the drum shaft 55 so as not to move in the front-rear direction while allowing this movement. Drum shaft 55
Is provided with a flange at the end thereof so that it does not drop off in the left-right direction when received by the U-shaped bearing 53.

The operation of this embodiment will be described below.
When laying the lawn 1, the handle 13 is pushed to move the device to the left in the figure. By this movement, the left wheel 9 in the figure rotates counterclockwise. At the same time, the three idler pulleys 19 also rotate counterclockwise, and the center pulley 17 rotates clockwise. This rotation causes axle 1
The fifth and first long pulleys 43 also rotate clockwise.
Accordingly, the endless belt 47 wound around the first long pulley 43 and the second long pulley 45 rotates clockwise. For this reason, the roll-shaped lawn 1 placed on the belt 47 is rotated counterclockwise, and the mat-shaped lawn 1 is unwound and sent out below the right wheel 7 in the figure. The fed lawn 1 is pressed against the ground 57 by the wheels 7 and is laid. When changing the spreading direction, an operator moves the steering handle 11 to change the moving direction of the bogie 5 of the device.

If the belt 47 is stretched due to aging, the rolled lawn 1 which is a heavy material cannot be sufficiently supported, and the belt tension adjusting device 51 is used to absorb the stretch.
Turn the screw 52 to increase the dimension between the two long pulleys 43, 45. As a result, the belt 47 is again in a taut state, and can support the rolled lawn 1.

As described above, according to the present embodiment, the operator presses the handle 13 to move the apparatus, and the wheels 9 rotate, whereby the endless belt 47 rotates, and the rolled lawn 1 is automatically turned. Can be rotated to spread and spread the lawn 1, so that there is no need to separately provide a motor or the like to rotate the lawn 1 in a roll form. Therefore, the cost of the apparatus can be reduced.

The wheel 9, the idler pulley 19, the center pulley 17, and the first long pulley 43
Since they rotate at substantially the same peripheral speed, the moving speed of the truck 5 by the wheels 9 and the length of the pulleys 43 and 45 and the belt 47
Is almost the same as the delivery speed of the lawn 1. For this reason, an unreasonable tension does not act on the fed lawn 1, and conversely, loosening and wrinkling can be avoided.

The rotation of the wheels 9 causes the belt 47 to rotate.
Is rotated and the lawn 1 is automatically unwound, so that there is no need to manually feed out the lawn 1.

The lawn 1 in the form of a roll is flexibly supported by a wide area by the belt 47, so that the lawn 1 is hardly damaged. In addition, the force transmitted from the belt 47 to the rolled lawn 1 acts on the circumferential portion of the rolled lawn 1 and generates a large rotating torque with a small force. Therefore, the lawn 1 can be easily rotated with a small force.

In the above embodiment, the right wheel 7 in the figure is a steering wheel. However, other devices may be simply fixed wheels. Even in this case, the spreading direction can be changed by moving the entire apparatus with the handle 13.

In the above embodiment, the pulley such as the idler pulley 19 and the center pulley 17 transmits the rotation of the wheel 9 to the axle 15, that is, the first long pulley 43. In the embodiment, a gear such as an idler gear or a center gear may be used. That is, an idler gear that is in contact with and meshes with the outer periphery of a center gear provided coaxially with the axle 15 is provided on the bogie, and gear teeth that mesh with and contact the outer periphery of the idler gear are formed on the inner peripheral side of the wheel. As described above, by using the gears instead of the pulleys, slippage is less likely to occur, and the moving speed of the carriage 5 and the sending speed of the lawn 1 can be more matched.

In the above embodiment, if the thickness t of the wheel 9 is too large, an error occurs in which the peripheral speed of the idler pulley 19 and the center pulley 17 becomes smaller than the peripheral speed of the wheel 9. To correct this error, the outer diameter of the first long pulley 43 may be slightly larger than the outer diameter of the center pulley 17. In this manner, it is possible to make the moving speed of the cart 5 and the sending speed of the lawn 1 almost completely coincide with each other.

Further, in the above embodiment, the movement of the apparatus is performed manually by using the handle.
In another embodiment, the movement may be performed by rotating the wheels 7 by a driving device.

[0025]

As described above, according to the belt-type lawn feeder of the present invention, the endless belt rotates with the rotation of the wheels performed during the movement of the bogie, thereby rotating the roll-like lawn. In addition, since the feed is spread, there is no need to provide a separate motor for unwinding, and the lawn can be spread without manual work.

Further, since the moving speed of the bogie is substantially the same as the speed at which the lawn is sent out, unreasonable tension is not applied to the lawn to be fed, and wrinkles and looseness are less likely to occur.

[Brief description of the drawings]

FIG. 1 is a side view of a belt-type lawn feeding device according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged view showing a main part of FIG. 1;

FIG. 4 is a longitudinal sectional view of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Lawn 3 Take-up drum 5 Dolly 7, 9 wheels 11 Steering handle 13 Handle 15 Axle 17 Center pulley 19 Idler pulley 21 Idler pulley bearing plate 23 Bolt hole 25 Bolt nut 27 Shaft 29 Bearing 31 Lock nut 33 Axle part 35 Bearing 37 Bush 39 Bearing Holder 41 Lock Nut 43 First Long Pulley 45 Second Long Pulley 47 Endless Belt 49 Spring 51 Belt Tension Adjuster 52 Screw 53 U-Shaped Bearing 55 Drum Shaft

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A01C 1/04 A01C 11/00 A01G 1/12

Claims (2)

(57) [Claims] 1. A cart moved by a plurality of wheels, a winding drum for winding a mat-like lawn into a roll,
Movable both ends of the drum shaft of the winding drum in the vertical direction
A U-shaped bearing provided in the truck in the vertical direction in order to support the wheel, a center pulley provided coaxially with an axle of any of the wheels, and a center pulley provided in the truck . In contact with the outer circumference and the center pulley is provided
Contacting the inner peripheral side of the wheel, and following the rotation of the wheel.
And A <br/> Hydra pulleys for rotating the axle through the center pulley Te, a first elongated pulley provided on the axle, and a second elongated pulley provided on the carriage, these When wound on the first and second long pulleys
Both before being wound on the winding drum
A mat-like lawn is placed, and according to the rotation of the wheels
An endless belt that is turned to feed the mat-like lawn . 2. A cart moved by a plurality of wheels, a winding drum for winding a mat-like lawn into a roll,
Movable both ends of the drum shaft of the winding drum in the vertical direction
A U-shaped bearing provided in the vertical direction in the carriage to support the ability a center gear provided coaxially to the axle of one of the wheels, provided in the carriage, in contact with the outer periphery of said center gear Meshed with the center gear
Gear teeth formed on the inner peripheral side of the wheel
The rotation of the wheels through the center gear
And idler gear for rotating the axle, a first elongated pulley provided on the axle, and a second elongated pulley provided on the carriage, is wound around these first and the second elongated pulley And wound on the winding drum
The mat-like lawn that has been wiped off is placed, and the wheels
An endless belt that is turned according to rotation and feeds out the mat-like lawn .