JP2578323B2 - Lawn irrigation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lawn irrigation apparatus for intermittently driving a lawn with a high-pressure liquid to perform fertilization, injection of a chemical solution, or aeration.

[0002]

2. Description of the Related Art Fertilization and aeration are indispensable for maintenance and management of lawns in golf courses and the like. The aeration work is to introduce air to the grass roots to help the grass grow.For example, there is one that can form a large number of small cavities in the ground by injecting high-pressure liquid from a nozzle onto the grass surface. Is being developed. Then, by mixing a fertilizer, a pesticide, or the like as needed into the high-pressure liquid, fertilization and pesticide spraying can be performed at the same time.

[0003] Recently, as a lawn irrigation device for performing this type of work, a frame movable along a lawn surface,
A plurality of nozzles mounted on the frame with the injection port facing the grass surface, a pump for supplying high-pressure liquid, and intermittent supply of high-pressure liquid to each nozzle interposed between the pump and each nozzle A switching valve has been developed which comprises a switching valve for switching the pressure and a switching valve biasing portion for opening the switching valve intermittently, and in which high-pressure liquid is simultaneously and intermittently ejected from each nozzle to the lawn surface. Each nozzle is assembled to a block, and a plurality of blocks are arranged in a horizontal row and mounted on a frame.

[0004]

[Problems to be Solved by the Invention] For lawn fertilization and aeration work, conditions such as the injection pressure, injection amount and injection position of the liquid are optimized depending on the purpose of the work, the growth state of the lawn and the difference in soil quality. It is necessary to make it. However, in the case of the conventional lawn irrigation device, the injection pressure and the injection amount can be adjusted, but since the nozzle is fixed to the frame via the block, the injection position cannot be flexibly changed. There is a problem that. In particular, when the switching valve and the switching valve urging portion are assembled to the block together with the nozzle, the block becomes quite large, and the arrangement is naturally limited.

An object of the present invention is to effectively solve such a problem.

[0006]

The invention of the present application employs the following means to achieve the above object. That, lawn irrigation device of the invention according to claim 1 of the present patent application includes a movable frame along the grass surface, and a plurality of nozzles mounted on said frame toward the injection port on the grass surface, the high pressure A pump for supplying a liquid, and a distribution mechanism for distributing and supplying the high-pressure liquid supplied from the pump to the nozzle, wherein the position of the nozzle can be changed within a nozzle mounting area of the frame. Make up and nozzle
The mounting plate extends horizontally on a part of the frame, and the nozzle
Extend the long hole which is the mounting area to the nozzle mounting plate from side to side
Penetrate the nozzle into the desired position of the slot,
It is characterized in that it is configured to be able to set.

[0007] A lawn according to the invention of claim 2 of the present application.
The irrigation device consists of a frame that can move along the grass
A plurality of frames attached to the frame with the opening facing the grass surface
A nozzle, a pump for supplying high-pressure liquid, and the pump
High-pressure liquid supplied from the nozzle is distributed and supplied to the nozzle
A dispensing mechanism.
The position can be changed within the nozzle mounting area of the frame.
The chisel mounting plate extends horizontally on a part of the frame, and
A lot of nozzle engaging holes, which are the nozzle mounting areas,
Nozzle penetrating through the plate and selectively inserting into a part of the nozzle engaging hole
And can be fixed by entering
I do.

[0008]

With this configuration, the position of the nozzle can be changed within the nozzle mounting area, and the injection pressure and the injection amount of the liquid can be changed according to the purpose of the work, the growth condition of the lawn, and the difference in soil quality. In addition, the injection position can be optimized.

When a long hole penetrating the nozzle mounting plate is used as the nozzle mounting area, the position of the nozzle can be changed in the long hole, and the interval can be arbitrarily changed with the outer diameter of the nozzle being the lower limit. Despite the simple structure, the arrangement of the nozzles can be set flexibly. Also, when a large number of nozzle engaging holes penetrating the nozzle mounting plate are used as the nozzle mounting area, the position of the nozzle is limited to the arrangement position of the nozzle engaging hole, but a certain degree of freedom of position selection is obtained. In addition to this, the nozzle can be more securely fixed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the irrigation apparatus 1 includes a self-propelled vehicle 2, a frame 4 equipped with a nozzle 3, a pump 5 for supplying high-pressure liquid, and a high-pressure liquid supplied from the pump 5. A distribution mechanism 6 for distributing and supplying to each nozzle 3 is mounted.

The self-propelled vehicle 2 has a chassis 23 supported by front wheels 21 for steering and rear wheels 22 for driving. A driver's seat 24 is provided in a front half of the chassis 23 and a rear half thereof. Is equipped with a tank 25 for storing liquid. The left and right rear wheels 22 are driven to rotate by the power of an engine 26.

The frame 4 is disposed between the rear wheels 22. As shown in FIG. 2, a front nozzle cover 42 is laid between left and right side plates 41, and a horizontally extending nozzle 4 is provided. A mounting plate 43 is fixed to the back of the front nozzle cover 42, and a rear nozzle cover 44
Fixedly constructed. Eight nozzles 3 are mounted on the nozzle mounting plate 43 with the injection ports 31 facing downward. The front and rear nozzle covers 42 and 44 are curved in a U-shape when viewed from the side, and the lowermost end thereof is disposed below the nozzle 31 of the nozzle 3 so that the nozzle 31 of the nozzle 3 A constant gap can always be maintained with the surface G. A horizontal member 45 is provided between the left and right side plates 41, and the distribution mechanism 6 is fixed to the center of the horizontal member 45. Wheels 46 are pivotally mounted between the lower end portions of the left and right side plates 41, and the two nozzle covers 42 and 44 are properly grounded to the grass surface G while holding the frame 4 in an appropriate posture via the wheels 46. Like that.

In the frame 4 having such a configuration, the left and right side plates 41 and the left and right mounting portions 231 provided on the chassis 23 are connected via parallel links 47, respectively, and the center of the horizontal member 45 is retracted from the nozzle. It is lifted up by the mechanism 48 and is connected to the chassis 23 so as to be able to move up and down and tilt left and right, and is connected so as to be able to follow the running of the self-propelled vehicle 2 while pressing the grass surface G by its own weight. . The nozzle retracting mechanism 48 mounts the upper end of the hydraulic cylinder 481 on a support frame 232 fixed to the chassis 23, connects the lower end to the center of the horizontal member 45 of the frame 4, and supports the frame 4 by pulling it upward. The configuration is as follows. The hydraulic cylinder 481 is a double-acting type driven by hydraulic oil from a hydraulic pump (not shown), and can be controlled by a switch (not shown) provided in the driver's seat 23. The distribution mechanism 6 fixed to the center of the horizontal member 45 of the frame 4 is provided with a bracket 62 having an elongated hole 61 extending vertically, and a hydraulic cylinder 481 is provided in the elongated hole 61.
A pin 482 horizontally fixed to the lower end of the head is slidably engaged. When the wheel 46 is in contact with the flat running surface G, the pin 482 is set so as to engage with the intermediate position in the longitudinal direction of the long hole 61, and when the road surface on which the wheel 46 runs has irregularities, Is configured so that the pin 482 moves along the longitudinal direction of the long hole 61 to absorb irregularities on the traveling road surface.

As shown in FIG. 1, the pump 5 is mounted on the rear end of the chassis 23 and is driven by a pump engine 51. The liquid in the tank 25, for example, water is pressurized by the pump 5 and supplied to the distribution mechanism 6.

The distribution mechanism 6 is fixed to the center of the horizontal member 45 of the frame 4 and has four switching valves 64 and one switching valve urging portion in a block 63 as shown in FIG. 65 is provided internally. As shown in FIG. 4, each of the switching valves 64 connects the port P to the ports A to D. As the switching valve urging portion 65 rotates, the pressing element 651 moves the valve rod 641.
Is pressed downward, so that port P and port A
D is sequentially opened and closed independently.
The port P of each switching valve 64 communicates with an inlet 66 formed in a side surface of the distribution mechanism 6 via an internal flow path.
The high-pressure liquid is supplied from the pump 5 via a main water supply path 71 connected to the pump. Ports A to D of each switching valve 64
Communicates with a pair of outlets 67 formed in the side surface of the distribution mechanism 6 through internal flow paths, respectively, and has a one-to-two relationship through a branch water supply path 72 connected to each outlet 67. The high-pressure liquid is supplied to a total of eight nozzles 3 corresponding thereto.

FIG. 5 shows the water supply path. The trunk water supply system 7
The liquid in the tank 25 is caused to flow into the pump 5, and the liquid pressurized in the pump 5 is guided to the introduction port 66 via the opening / closing valve 73 and the unloader valve 74. The opening / closing valve 73 is opened and closed by an ON-OFF switch (not shown) provided in the nozzle retracting mechanism 48, and is set so as to be opened only while the wheel 46 is in contact with the grass surface G. The unloader valve 74 is
It has a known structure configured to detect a change in the pressure of the main water supply path 71 due to the opening / closing valve 73 being opened and to control the throttle valve 52 of the pump engine 51 in the opening direction. The eight branch water supply paths 72 are made of, for example, rubber, and are configured to guide the high-pressure liquid from the eight outlets 67 of the distribution mechanism 6 to the eight nozzles 3, respectively.

Next, the operation of this embodiment will be described. When starting the operation, first, the hydraulic cylinder 481 of the nozzle retracting mechanism 48 is extended downward, the frame 4 is lowered, and the wheel 46 and the nozzle covers 42, 4
4 is attached to the grass surface G. When the wheels 46 follow the traveling of the self-propelled vehicle 2, the opening / closing valve 73 is opened, and the liquid in the tank 25 is pumped by the pump 5 from the main water supply path 71 through the introduction port 66 of the distribution mechanism 6 to each of the switching valves 6.
4 to port P. At the same time, the opening and closing of the switching valve 64 is started by the switching valve urging portion 65 so that the timing is different from each other and the switching valve 64 is sequentially opened for a predetermined period, and the liquid flows from the ports A to D to the outlet 67 and the branch water supply path 72. The nozzles 3 are supplied to the corresponding pair of nozzles 3 via the nozzles 31 and are ejected from the ejection ports 31 toward the grass surface G. When the operation is completed, the hydraulic cylinder 481 of the nozzle retracting mechanism 48 is contracted upward to raise the frame 4 upward, and the wheels 46 and the two nozzle covers 42 and 44 provided on the frame 4 are separated from the traveling surface G together with the nozzles 3. . When the wheel 46 is not in contact with the running surface G, the opening and closing valve 73 is set to be in the closed state, so that the injection of the high-pressure liquid from the nozzle 3 is stopped. In the irrigation apparatus 1 having such a configuration, in the present embodiment, as shown in FIG. 2, a long hole 81 having a constant width extends to the left and right in the nozzle mounting plate 43 of the frame 4. As the nozzle mounting region R, a long hole 8
1 so that the nozzle 3 can be mounted at an arbitrary position. The nozzle 3 is inserted into the elongated hole 81 from below, and the nut 32 is screwed and fixed to the upper end. Branch water supply path 72
Is configured to be sufficiently flexible and long so that a high-pressure liquid can be supplied to an arbitrary position in the nozzle mounting region R.

In the irrigation apparatus 1 having such a configuration, the position of the nozzle 3 can be changed in the nozzle mounting area R, and the nozzle 3 can be changed in accordance with the purpose of the work, the growth state of the lawn, and the difference in soil quality.
It is possible to optimize not only the ejection pressure and the ejection amount of the liquid but also the ejection position. In particular, according to the present embodiment, the nozzle 3 can be fixed at an arbitrary position of the long hole 81, and the interval can be set arbitrarily with the diameter of the nozzle 3 as the lower limit, so that the simple structure can be achieved. Regardless, flexible arrangement is possible. Further, since the switching valve 64 is integrated in the distribution mechanism 6 and the liquid is supplied to the nozzle 3 at an arbitrary position through the branch water supply path 72, the size of the member mounted in the nozzle mounting region R is small. Therefore, restrictions on the arrangement of the nozzles 3 can be remarkably reduced. Further, since the distributing mechanism 6 includes the plurality of switching valves 64, it is possible to achieve both the flexible change of the arrangement of the nozzles 3 and the sequential ejection of high-pressure liquid, which were difficult in the past.

As another embodiment of the present invention, as shown in FIG. 6, a nozzle mounting region R is formed by a large number of nozzle engaging holes 82 which are arranged in a line on the left and right in the nozzle mounting plate 43 and penetrate therethrough. The nozzle 3 has some of the nozzle engaging holes 8
2 can be selectively engaged and fixed, and although the arrangement is limited to the arrangement position of the nozzle engagement hole 82, the long hole 81
It is possible to realize a more durable fixed state as compared with the case of fixing to a fixed position. In addition, the arrangement of the nozzle engaging holes 82 is not limited to one line on the left and right, and can be arbitrarily provided according to the purpose and application.

The configuration according to the present invention is not limited to the above-described configuration. For example, it is possible to provide a plurality of distribution mechanisms 6 so as to supply the liquid to more nozzles 3. It is also possible to increase or decrease the number of switching valves 64 in the distribution mechanism 6. The number of nozzles 3 is also arbitrary, and the number of nozzles 3 to which the liquid is supplied from the individual switching valves 64 is not limited to two, and the correspondence between the switching valves 64 and the nozzles 3 varies depending on the purpose and application. Can be set to In addition, various modifications can be made without departing from the present invention.

[0022]

According to the present invention, the nozzle arrangement can be flexibly changed, so that not only the injection pressure and the injection amount of the liquid but also the injection position can be adjusted according to the purpose of the work, the growing condition of the lawn, the difference in soil quality, and the like. Can also be optimized.

When a long hole extending to the left and right of the nozzle mounting plate is used as a nozzle mounting area and the nozzle is fixed in this nozzle mounting area, the position of the nozzle can be set arbitrarily within the long hole. Further, the interval between the nozzles can be arbitrarily set with the lower limit of the diameter of the nozzles, so that a flexible arrangement can be achieved despite a simple structure. The same applies to the case where the nozzle is fixed as a nozzle mounting area with a large number of nozzle engaging holes provided in the nozzle mounting plate.Although the arrangement of the nozzle is limited to the arrangement position of the nozzle engaging hole, the nozzle is more It can be fixed securely.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of the present invention.

FIG. 2 is a perspective view showing the main part.

FIG. 3 is a perspective view showing a distribution mechanism of the embodiment.

FIG. 4 is a partial cross-sectional view showing the switching valve and the switching valve urging portion of the embodiment.

FIG. 5 is a block diagram showing a water supply path of the embodiment.

FIG. 6 is a perspective view showing a nozzle mounting area according to another embodiment of the present invention.

[Explanation of symbols]

 G: Lawn surface 1 ... Irrigation device 3 ... Nozzle 4 ... Frame 5 ... Pump 6 ... Distribution mechanism 31 ... Injection port 43 ... Nozzle mounting plate 63 ... Block 81, R ... Slot, nozzle mounting area 82, R ... Nozzle engagement Hole, nozzle mounting area

Claims (2)

(57) [Claims] 1. A frame movable along a lawn surface, a plurality of nozzles mounted on the frame with an injection port facing the lawn surface, a pump for supplying high-pressure liquid, and a pump supplied from the pump. A lawn irrigation device comprising: a dispensing mechanism for distributing and supplying a high-pressure liquid to the nozzle, wherein the nozzle is configured to be changeable in a nozzle mounting area of the frame, and a nozzle mounting plate is provided on one side of the frame. Extends horizontally to the part
The nozzle mounting plate is provided with a long hole as a nozzle mounting area.
To the left and right through the
A lawn irrigation device characterized in that it is configured to allow the water to enter and be fixed . 2. A frame movable along a lawn surface;
A plurality of frames attached to the frame with the opening facing the grass surface
A nozzle, a pump for supplying high-pressure liquid, and the pump
High-pressure liquid supplied from the nozzle is distributed and supplied to the nozzle
A lawn irrigation device comprising a dispensing mechanism, wherein a nozzle can be repositioned within a nozzle mounting area of a frame.
The nozzle mounting plate is provided so as to extend horizontally in a part of the frame, and a large number of nozzle engaging holes, which are nozzle mounting areas, penetrate through the nozzle mounting plate and are selectively provided in a part of the nozzle engaging holes. A lawn irrigation apparatus characterized in that the nozzle can be inserted into the turf and fixed.