JPH044509Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a device for inserting sand and fertilizer between the grains of lawns, artificial turf, etc. in golf courses, parks, stadiums, etc.

[Conventional technology]

Generally, to grow a lawn, sand and fertilizer are added between the turf grains. For this purpose, after spreading sand, fertilizer, etc. on the grass surface, by leveling it with a wooden dragonfly as shown in Figure 7, the sand and fertilizer are spread deep between the grass grains.
Moreover, it was inserted evenly.

[The problem that the idea aims to solve]

When leveling with a dragonfly as described above, there was a problem that not only uneven leveling was likely to occur, but also that the leveling did not go deep and evenly between the grass grains and caused damage to the lawn. In addition, in the case of artificial turf, it is necessary to put sand deep down to the roots of the turf during construction, so it is necessary to level it many times with a dragonfly, which not only takes a lot of time but also removes the tips of the artificial turf. There was a problem with it being damaged.

This invention was devised to solve this problem, and is a device for inserting sand and fertilizer between the grass grains that can easily insert sand and fertilizer deep and evenly between the grass grains without damaging the grass. The purpose is to obtain.

[Means to solve the problem]

In order to achieve the above object, the device for inserting sand and fertilizer between the turf grains according to this invention has a box-shaped external frame having an external opening on the lower surface that slides into contact with the turf surface and an external inlet on the upper surface. At the same time, a box-shaped internal frame having an internal opening located above the external opening and an internal inlet on the top surface so as not to come into contact with the grass surface is attached to the running wheel and the push handle. The fan is mounted inside a box-shaped external frame at intervals, and is rotated within the box-shaped internal frame by a drive source placed on the box-shaped external frame.

[Effect]

In this invention, when the fan is rotated,
Wind is taken into the box-shaped internal frame from the external inflow port through the internal inflow port and is discharged from the internal opening, so the tips of the grass are swayed by this discharged wind.
The sand and fertilizer that have already been spread are inserted deep into the turf. At this time, a part of the discharged air is guided from around the internal opening into the space between the frames and circulated to the internal inlet, so that dust and the like are circulated by the circulating air.

〔Example〕

An embodiment of this invention will be described with reference to FIGS. 1 to 3. Fig. 1 is an overall perspective view, Fig. 2 is a sectional view along the line - of Fig. 1, and Fig. 3 is a cross-sectional view taken along the line - of Fig. 2.
It is a partial view seen from above. In the figure, reference numeral 1 denotes a box-shaped external frame, which has an external opening 1a on its lower surface that slides against the grass surface, and an external air inflow port 1b on its upper surface. Reference numeral 2 denotes running tires provided on both sides of the box-shaped external frame 1, which are supported by a swing arm 3 so as to be movable up and down. 4 is a box-shaped external frame 1
The engine is mounted on the upper surface by an underframe 5, and 6 is a box-shaped internal frame mounted inside the box-shaped external frame 1 at a distance of 7. It has an internal opening 6a on the lower surface located above by a dimension 1, and an internal air inflow port 6b on the upper surface. Reference numeral 8 denotes a fan that rotates horizontally within the box-shaped internal frame 6, and is driven by the engine 4 via a vertical shaft 8a inserted from the external inlet 1b to the internal inlet 6b. Reference numeral 9 denotes a hand handle attached to the rear of the box-shaped external frame 1.

Next, the operation will be explained. When the engine 4 is driven and the fan 6 is rotated, air is taken into the box-shaped internal frame 6 from the external inflow port 1b through the internal inflow port 6b, and the air is taken into the box-shaped internal frame 6 as it is through the internal opening 6a.
It is blown onto the grass surface. In particular, the air taken into the box-shaped internal frame 6 is blown onto the lawn surface along the inner surface of the frame. At that time, if sand is scattered on the grass surface, the tips of the grass vibrate due to the discharged wind, the sand gets into the spaces between the grass grains, and is further pushed deeper by the wind pressure. At this time, a part of the discharged air is guided from the periphery of the internal opening 6a into the space 7 and circulated to the internal inflow port 6b, so that the sand, dust, etc. that remain without entering between the grass grains are carried away by the circulating air. As it circulates, it is pushed between the grass grains. Therefore, by pushing the hand handle 9 and moving in this state, the work can be carried out continuously, sand can be inserted easily and evenly, and the sand can be inserted effectively without creating dust.

If the running tire 2 is supported by the swing arm 3 as in the above embodiment, the swing arm 3 can be rotated around the support shaft 3b by the adjustment screw 3a as shown in FIG. The height of the external frame 1 above the ground can be adjusted.

Next, another embodiment of this invention will be described with reference to FIG. FIG. 4 is a longitudinal sectional side view of the main parts, and the same or corresponding parts as those of the above embodiment are given the same reference numerals and the explanation thereof will be omitted. In the figure, reference numeral 10 denotes a brush that is removably attached to the periphery of the external opening 1a of the box-shaped external frame 1 with bolts or the like, and the tip of the brush slides against the grass surface instead of the external opening 1a. 6A is a space 7 inside the box-shaped external frame 1.
It is a box-shaped internal frame attached at a distance, and has an internal opening 6a on the lower surface located above the tip of the brush by a distance l to prevent it from sliding against the grass surface.

In this way, the external opening 1 of the box-shaped external frame 1
If the brush 10 is attached to the brush 10, it will break up wet and hardened sand, and the crushed sand will enter the outside opening 1a, providing a great insertion effect even under bad conditions such as after rain. It will be done.

Furthermore, other embodiments of this invention are shown in FIGS. 5 and 6.
The diagram will be explained. Figure 5 is an overall perspective view, Figure 6
The figure is a longitudinal sectional side view of FIG. 5, and the same or corresponding parts as those of the above embodiment are given the same reference numerals and the explanation thereof will be omitted. In the figure, 11 is a hopper placed on the top of the box-shaped external frame 1, and 12 is a rotary feeder provided near the outlet 11a of the hopper 11, which supplies sand from the hopper 11 into the frame in fixed quantities.

When the hopper 11 is provided in this way and a fixed amount of sand is dropped from the hopper 11 into the box-shaped internal frame 6, the sand can be inserted between the grass grains while spreading the top soil.

Although the engine 4 is shown as the drive source in each of the above embodiments, an electric motor or a hydraulic power source may be used. Further, in the above explanation, the introduction of sand was explained, but it goes without saying that the same effect can be obtained by using fertilizer or by mixing both.

[Effect of idea]

As described above, with this invention, it is possible to easily insert sand and fertilizer deep and evenly between the turf grains without damaging the turf, and at the same time, the circulating air allows the sand and fertilizer to remain in the turf grains without getting into the turf grains. Sand and dust circulate and
It can be inserted effectively without scattering it outside the frame, and has the effect of allowing work to be done without dust.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view showing an embodiment of this invention, Fig. 2 is a cross-sectional view taken at - in Fig. 1, Fig. 3 is a partial view taken from line - in Fig. 2, and Fig. 4 is a perspective view of this invention. FIG. 5 is a vertical cross-sectional side view of main parts showing another embodiment of
The figure is an overall perspective view showing still another embodiment of this invention, FIG. 6 is a longitudinal side view of FIG. 5, and FIG. 7 is a diagram showing a dragonfly. In the figure, 1 is a box-shaped external frame, 1a is an external opening, 1b is an external inlet, 2 is a running wheel,
4 is a driving source, 6, 6A is a box-shaped internal frame, 6a
is the internal opening, 6b is the internal inlet, 7 is the interval, and 8
9 indicates a fan, and 9 indicates a hand handle. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A running wheel and a push handle are attached to a box-shaped external frame that has an external opening on the lower surface that slides against the turf surface and an external inlet on the upper surface, and the external opening A box-shaped internal frame having an internal opening located above the box-shaped external frame and an internal inflow port on the top surface is installed at intervals inside the box-shaped external frame, and a drive mounted on the box-shaped external frame is mounted. A source rotates a fan within the box-shaped internal frame, the fan takes in air from the external inlet and discharges it from the internal opening, and also directs a portion of the discharged air from around the internal opening to the internal opening. A device for inserting sand and fertilizer between the grass grains, characterized in that the sand and fertilizer are introduced into the gap between both frames and circulated to the internal inlet.