JPH055843Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This is a lawn care device that punches a small hole in the grass of a golf course green, extracts a clod of soil, and throws this clod, or core, into a collection box at the rear of the aircraft. This is an idea regarding.

(Prior Art) This type of lawn care device for extracting cores is disclosed in Japanese Patent Application Laid-Open No. 53-22048, in which a plurality of lifting rods are connected to a crankshaft at the upper end and have perforated teeth at the lower end. It is inserted into the ground, the core is extracted, and a rotating brush is used to put the core into a collection box connected to the rear of the aircraft.

In order to change the direction of the aircraft, the rear of the aircraft, which is equipped with a lifting rod, must be raised to prevent the perforated teeth from touching the ground.

(Problem that the invention aims to solve) By the way, when the drilling teeth are raised to change the direction of the aircraft, a core remains on the ground between the raised point and the rotating brush, so this remaining core is rotated. They must be brushed into the collection box.

Furthermore, when traveling on a road, not only the perforated teeth but also the rotating brush must be prevented from coming into contact with the ground surface.

However, in this invention, even if the rear part of the aircraft is raised to change the direction of the aircraft so that the drilling teeth do not contact the ground surface, the rotating brush and collection box will still touch the ground surface and the drilling teeth will continue as the aircraft moves. The purpose is not only to throw the remaining core between the raised point of the tooth and the rotating brush into the collection box, but also to prevent not only the perforated teeth but also the rotating brush from coming into contact with the ground surface when traveling on the road. The purpose is also to prevent damage caused by

(Means for Solving the Problems) To explain the present invention with reference to drawings, 1 is a plurality of lifting rods whose upper ends are connected to a crankshaft 2 installed horizontally at the rear of the aircraft body A, and whose lower ends are provided with perforated teeth 3. ,
The front part of the body A is supported by support wheels 4, and the rear part is supported by drive wheels 5 which can move up and down with respect to the body.

B is a trailer equipped with a rotating brush 6 horizontally installed at the front lower part and a core collection box 14 at the rear, and is detachably connected to a hitch 8 at the rear of the body A by a parallel link consisting of upper and lower parallel rods 7.

Then, an adjusting screw rod 9 is screwed upward into one of the parallel rods 7, for example, the lower parallel rod, and a plate 10 is disposed opposite to the other parallel rod 7, that is, the upper parallel rod, which faces the upper end of the adjusting screw 9.

Reference numeral 11 denotes a power take-off shaft provided in the machine body A, and a belt 12 is installed between this and the central axis of the rotating brush 6.
A tension pulley 13 that is biased rearward by a spring S is provided to tension the belt 12.

A support wheel 15 is provided at the rear of the collection box 14.

(Function) As shown in Figure 1, when the trailer B is connected to the aircraft A by a parallel link in which the upper and lower parallel rods 7 are made almost horizontal, and the trailer B is towed to the left in the figure, the lower ends of the multiple lifting rods 1 The cores extracted by the perforating teeth 3 are thrown into a collection box 14 at the rear by a rotating brush 6 that rotates from a power extraction shaft 11 via a belt 12.

Then, to change the direction of movement of aircraft A, the second
As shown in the figure, when the drive wheels 5, which can be raised and lowered, are lowered relative to the fuselage, the rear of the fuselage A rises, and the front of the parallel link and the perforated teeth 3 also rise to rise above the ground, but the rotating brush 6 Tension pulley 13
The core remains in the collection box 14 between the old position of the drilling teeth 3 and the rotary brush 6, which has been raised as the aircraft advances as the aircraft advances.

When the drive wheel 5 is further lowered relative to the fuselage and the rear of the fuselage A is raised even higher, the adjusting screw 9 comes into contact with the contact plate 10, not only in front of the parallel link, but also in the front of the parallel link, as shown by the broken line in FIG. The rear part is also raised, and the rotary brush 6 moves away from the ground surface using the support wheel 15 as a fulcrum, so the rotating brush 6 moves on the road in this state.

Then, rotate the screw rod 9 to connect the tip of the screw rod and the contact plate 1.
By shortening or extending the distance from 0, the time when the rotating brush 6 leaves the ground surface can be set earlier or
Or adjust it later. For example, when the slope of the periphery of the green is steep, the distance between the tip of the screw rod 9 and the contact plate 10 is increased to delay the time when the rotating brush 6 leaves the ground surface. By adjusting the screw rod 9 in this way, when the aircraft A goes out of the green first and is lowered far below the position of the trailer B, which remains on the green, when the rear part of the aircraft A rises, the rotating brush 6 will be difficult to move. Since it does not move away from the ground surface, the rotating brush 6 can be moved to the periphery of the green while touching the ground surface, and all the cores of the green can be collected in the collection box 1.
It can be collected in 4 days.

When the slope of the periphery of the green is gentle, the distance between the screw rod 9 and the contact plate 10 is conversely shortened to quickly raise the rotating brush 6 above the ground surface. In this way, operate the screw rod 9 appropriately according to the terrain to be worked on, and rotate the rotating brush 6.
Adjusts the time when it leaves the earth's surface.

(Embodiment) Reference numeral 16 denotes a hitch pin that detachably connects the parallel link to the hitch 8. It is preferable that the hitch 8 and the parallel link are provided in one pair on the left and right.

A guide cover 17 is visible above the rotating brush 6 and the front half of the collection box 14, and the cores sprung up by the rotating brush 6 are guided by the lower surface of the cover 17 and are securely thrown into the collection box 14.

Reference numeral 18 is a hawk for removing obstacles on the earth's surface. Between the two forked hawks, the piercing teeth 3 of the cylindrical body are inserted into the ground to fill the cylindrical body with clods of earth, and then the clods of earth are filled first. The lump of earth is pushed out from above the drilling teeth as a core and falls to the ground surface.

Reference numeral 19 denotes rotatable rollers attached to both left and right sides of the machine wall of the trailer B on which the rotating brush 6 is installed horizontally.

(Effect of the invention) According to the present invention, the core extracted by the drilling teeth 3 is put into the collection box 14 by the rotating brush 6, and when the drive wheel 5 is lowered and the rear part of the body A is raised, the drilling teeth 3 rises and does not contact the ground surface, the direction of movement of the aircraft A can be easily changed, and at this time, the rotating brush 6 is still rotated by the tension pulley 13 that urges backward, and the old position of the raised drilling tooth 3 is changed. The core remaining between the rotary brush 6 and the rotary brush 6 can be thrown into the collection box 14, and when the drive wheel 5 is further lowered, the adjusting screw 9 comes into contact with the contact plate 10 and the rotary brush 6 no longer comes into contact with the ground surface. 3 and the rotating brush 6 on the road without damaging it, and furthermore, by rotating the adjusting screw 9, the plate 1
By expanding and contracting the distance from 0, the time when the rotating brush 6 leaves the ground surface can be adjusted, thereby producing the effect that cores on the green can be recovered without leaving any on the green even if the slope of the periphery of the green is slow or slow.

[Brief explanation of drawings]

FIG. 1 is a side view of the embodiment of the present invention, FIG. 2 is a side view with the rear of the fuselage raised and the drilling teeth separated from the ground, and FIG. 3 is an enlarged side view showing the action of the parallel link. 1 is the lifting rod, 2 is the crankshaft, 3 is the perforated tooth, 4
is a support wheel, 5 is a drive wheel, 6 is a rotating brush, 7 is a parallel rod, 8 is a hitch, 9 is an adjustment screw rod, 10 is a backing plate,
12 is the belt, 13 is the tension pulley.

Claims (1)

[Claims for Utility Model Registration] The upper ends of a plurality of lifting rods 1 are connected to the crankshaft 2 installed horizontally at the rear of the fuselage A, and perforated teeth 3 are provided at the lower ends of the crankshaft 2, respectively. A trailer B is supported by support wheels 4 and drive wheels 5 which can be raised and lowered relative to the machine body at the rear, and equipped with a rotating brush 6 horizontally installed at the front lower part and a collection box 14 having support wheels 15 at the rear. It is connected to the hitch 8 at the rear of the fuselage A by a parallel link consisting of upper and lower parallel rods 7, and the plate 10 facing the tip of the adjustment screw 9 screwed into one parallel rod 7 is connected to the other parallel rod 7. The belt 12 installed between the power take-off shaft 11 provided in the machine body A and the central axis of the rotating brush 6 is provided with a tension pulley 13 that is biased backward by a spring S. Lawn care equipment made of tension.