JPH08299500A - Dredging machine - Google Patents

Abstract

PURPOSE: To easily collect golf balls which sank to the bottom of a pond in a golf course. CONSTITUTION: A self-propelling float 10 with a propeller is equipped with a jet pump 11 and an air compressor 12. A skirt 20 is supported in the front of the float 10 in a liftable manner. A jet nozzle 26 and an air nozzle 27 are provided in the skirt 20. The skirt 20 is faced toward the bottom of a pond. Excavation of a pond bottom is made by operating the jet pump 11 and jetting out water from the jet nozzle 26. A rising water flow is formed in the skirt 20 by operating the air compressor 12 and discharging air from the air nozzle 27. Golf balls dug up from the pond bottom as a result of excavation are sucked into the skirt 20 and recovered on to the float 10 through a hose 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable bottom dredger for moving foreign substances on the bottom of a pond such as a pond to move on the pond. The present invention relates to a bottom dredge suitable for collecting a sunk golf ball.

[0002]

2. Description of the Related Art There are usually several ponds on a golf course, and the number of golf balls hit into the pond is very large. A golf ball hit into a pond sinks to the bottom of the pond and cannot be reused unless it is collected within a short period of time.

In order to collect a golf ball that has sunk on the bottom of a pond at a golf course, for example, a hand rake type net is prepared at the golf course in Japan. It seems that divers dive into ponds abroad. In addition, in order to collect other foreign substances, the water is drained once every several years to carry out bottom dredging.

[0004]

However, the number of golf balls that can be collected by a hand rake type net or a diver is very small, and in the case of relying on the diver, securing personnel and labor costs are also serious problems. Even if the golf balls are completely collected by regular dredging, the collected golf balls cannot be reused. It may be possible to install a net on the bottom of the pond, but the feasibility is low due to the complicated shape of the pond.

As a result, most golf balls sunk in the pond are left without being reused,
The current situation is that they have been scrapped.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a bottom dredger that can easily collect foreign matter on the water bottom such as a golf ball sinking on the bottom of a pond on a golf course. To do.

[0007]

A bottom dredge machine according to the present invention is a mobile bottom dredge machine that moves on the water surface and collects foreign matter deposited on the water bottom, and is equipped with a propulsion device and A self-propelled float equipped with a jet pump for pressurizing the air and an air compressor for pressurizing the air, a skirt supported up and down by the float, immersed in water by the up and down and facing the bottom of the water, and the jet pump. Means for ejecting pressurized water as jet water below the skirt, means for ejecting air pressurized by the air compressor into the skirt to form a rising water flow, and means formed in the skirt And means for guiding the rising water stream onto the float and collecting foreign matter from the water stream.

The propulsion device for self-propelling the float is preferably a jet propulsion device using a jet pump mounted on the float as a power source.

The device for driving the skirt up and down is preferably an air cylinder powered by an air compressor mounted on the float.

The float preferably has an air bag as its floating means.

As a means for collecting foreign matter, it is desirable to provide a washing shower powered by a jet pump mounted on the float.

A mechanism for supporting the skirt so that it can be raised and lowered is, for example, that two parallel upper and lower arms are arranged side by side.
A parallel link mechanism may be used in which one end of each arm is rotatably connected to the float side and the other end of each arm is rotatably connected to the skirt side.

[0013]

[Function] The skirt is opposed to the bottom of the water, and jet water is jetted out below the skirt to excavate the bottom of the water and excavate foreign matter accumulated on the bottom of the water. The foreign matter is sucked into the skirt by the rising water flow in the skirt and collected on the float. A suction pump may be used as such suction means, but in that case, an impeller intervenes in the middle of the water channel, and the impeller becomes an obstacle, making it impossible to collect a large foreign matter such as a golf ball. When air is injected into the skirt to form a rising water flow, obstacles are removed from the water passage, and it becomes possible to collect a large foreign matter such as a golf ball. The combination of excavating the water bottom by jetting jet water and transporting the foreign matter excavated by the excavation to the float by utilizing the rising water flow due to the jet of air is important in the present invention. Then, by continuing this operation while the float moves on the water surface, the foreign matters accumulated on the water bottom are collected.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing the overall structure of an example of a bottom dredge machine according to the present invention, and FIG. 2 is a plan view of the bottom dredge machine,
FIG. 3 is a side view showing a detailed structure near the skirt, and FIG. 4 is a front view near the skirt.

The bottom dredger comprises a self-propelled float 10 floating on the water surface, as shown in FIGS. The float 10 has a pair of left and right air bags 10b, 10b attached below the deck 10a. Air bag 10b,
10b is made of a rubber tube that is long in the front and rear direction, and can fill and discharge air through a plug (not shown).

A jet pump 11 and an air compressor 12 are mounted on the rear portion of the deck 10a. The jet pump 11 sucks water from the water supply pipe 13 thereunder and pressurizes it, and the air compressor 12 pressurizes the air. Neither the jet pump 11 nor the air compressor 12 is an engine type that requires no external power supply. Meanwhile, deck 1
An operation unit 14 and a separating device 15 are mounted on the front part of 1.

A jet nozzle 16 is provided at the rear of the float 10. The jet nozzle 16 propels the float 10 by ejecting the pressurized water obtained by the jet pump 11 as jet water. Moreover, the jetting direction of the jet water is changed by turning around the vertical line to change the direction of the float 10.

A skirt 20 immersed in water is attached to the front portion of the float 10 so as to project forward. The skirt 20 has a large rectangular suction port at the lower end and a small discharge port at the upper end. Then, by a support mechanism composed of parallel links, the suction port is horizontally supported and is supported so as to be movable up and down in front of the center of the float 10. The supporting mechanism will be described with reference to FIGS. 3 and 4.

The pair of left and right upper arms 21 and 21 and the pair of left and right lower arms 22 and 22 are equal in length and parallel to each other. Each arm is rotatably connected to the float 10 side so as to tilt up and down about the end on the float 10 side. The opposite end of each arm is rotatably connected to the skirt 20 side. An air cylinder 23 is used as a lifting drive device. The air cylinder 23 uses the air compressor 12 mounted on the float 10 as an air source, its cylinder tube side is connected to the float 10, and its rod side is connected to a horizontal bar hung between the upper parts of the upper arms 21, 21. .

Therefore, when the rod of the air cylinder 23 moves in and out, the skirt 20 moves up and down with the suction port at the lower end kept horizontal, and the support level is adjusted according to the depth of the water bottom.

The discharge port at the upper end of the skirt 20 is connected to the lower end of the hose 25 via a flexible joint 24, and the upper end of the hose 25 is connected to the separating device 15 on the float 10 via the flexible joint 24.

Jet nozzles 26, 26 and air nozzles 27, 27 are arranged in the skirt 20 as shown in detail in FIGS. 3 and 4. The jet nozzles 26, 26 attached to the front edge portion of the skirt 20 are connected to the jet pump 11 on the float 10 via a jet hose 28, and obliquely downward from a plurality of rearward-facing nozzle tubes 26a arranged in the lateral width direction. Jet a jet of water on. On the other hand, the air nozzles 27, 27 are attached to the front edge portion and the rear edge portion of the skirt 20, respectively, and via the air hose 29, the air compressor 12 on the float 10.
It is connected to the. Then, in order to form a rising water flow in the skirt 20, air is jetted upward into the skirt 20.

The separating device 15 on the float 10 has a grid 15a as shown in FIGS. 1 and 2, and the upper end of the hose 25 described above is located on the grid 15a.
A washing shower 17 is arranged on the grid 15a. The washing shower 17 is also supplied with shower water from the jet pump 11 on the float 10.

Next, a method of using the outsole excavator will be described in the case of recovering a golf ball sinking on the pond bottom of a golf course.

The size of this device dredger is, for example, 4 to 4 in total length.
It has a width of 5 m and a width of 2 to 3 m, and is designed to be mounted on a truck bed. Use a truck with a crane to carry the bottom dredger to the side of the pond, and use a crane to drop it on the pond and float it on the surface of the water.

An operator 30 gets on the float 10,
The jet pump 11 and the air compressor 12 are operated. By operating the air cylinder 23 via the operation portion 14, the level of the skirt 20 is adjusted to a position slightly separated from the pond bottom. The skirt 20 can be automatically held at a constant height from the bottom of the pond by using ultrasonic waves or the like.

In this state, jet water is jetted from the jet nozzles 26, 26 in the skirt 20 and the air nozzle 2
Air is ejected from 7, 27. Further, shower water is discharged from the washing shower 17 provided in the separating device 15 on the float 10.

By jetting jet water from the jet nozzles 26, 26, the pond bottom below the skirt 20 is excavated, and the golf ball is dug from the pond bottom together with other foreign matters such as empty cans and sludge. In addition, the air nozzle 2
The air is blown from 7, 27, so that the skirt 20
An updraft is formed in it. Therefore, foreign matter including the golf ball excavated from the pond bottom is sucked into the skirt 20 and conveyed through the hose 25 into the separating device 15 on the float 10.

In the separating device 15, foreign matter including a golf ball is dropped on the lattice 15a, and washing water is sprayed from the washing shower 17 to the foreign matter. As a result, sludge and the like is made to flow under the lattice 15a and returned to the pond, and only large foreign matters such as golf balls and empty cans are washed and collected.

While continuing this state, jet water is jetted backward from the jet nozzle 16 to float 1
0 is gradually advanced. Thereby, the bottom of the pond can be dredged without draining the water, and the golf ball sinking to the bottom of the pond can be collected.

By rotating the jet nozzle 16, the advancing direction of the float 10 can be changed, and by ejecting jet water forward, the float 10 can be retracted. Further, if the jet nozzles 16 are separately provided on both sides of the float 10, it becomes possible to move the float 10 to the side.

When the bottom of the pond has been dredged, the dredger is lifted from the pond. If the air is released from the air bags 10b, 10b of the float 10, the float 10 becomes smaller and the bottom dredger can be easily transported. When the bottom dredge machine is used again, the air bags 10b, 10b are filled with air, and the air can also be obtained from the air compressor 12 on the float 10.

Here, the propelling jet water ejected from the jet nozzle 16, the excavating jet water ejected from the jet nozzles 26, 26 into the skirt 20, and the shower water ejected from the washing shower 17 are Both are supplied from a jet pump 11 mounted on the float 10.

In addition, the air nozzle 27,
Skirt 2 for forming rising water flow ejected from 27
The air supplied to the air cylinder 23, which is an elevator drive device for 0, and the air filled in the air bags 10b, 10b are both the air compressor 12 mounted on the float 10.
Supplied from

Therefore, the present bottom dredger has a very simple structure as compared with its function.

The outsole dredger can be used not only for collecting golf balls sunk in a pond of a golf course, but also for collecting foreign matters such as empty cans sunk in a pond bottom, a lake bottom, a river bottom or the like.

[0037]

As described above, the bottom dredging machine according to the present invention excavates foreign matter accumulated on the water bottom by jetting jet water while the float moves on the water surface, and the excavated foreign matter. By transporting the above to the float using the rising water flow by the injection of air, the foreign matters accumulated on the water bottom can be efficiently and easily recovered without draining water. Therefore, even golf balls that have been left on the bottom of the pond can be collected frequently, and a large number of golf balls can be reused, so that effective use of resources can be achieved. In addition to golf balls, empty cans and the like can be collected, which has a great effect on environmental protection.

When a jet propulsion device using a jet pump mounted on the float as a power source is used as the propulsion device for self-propelling the float, an engine for propulsion is not required, so that the structure is simplified and the manufacturing is performed. Cost is reduced.

When an air cylinder mounted on a float and using an air compressor as a power source is used as a device for driving the skirt up and down, the power source is shared, and the structure is simplified and the manufacturing cost is reduced.

When the float is equipped with an air bag as its floating means, the float can be made smaller by removing air from the air bag, and the transportation and the like can be simplified. When injecting air into the bladder, the air compressor mounted on the float can be used, which is also very convenient.

When a cleaning shower using a jet pump mounted on the float as a power source is provided as a means for collecting foreign matters, the collected foreign matters can be washed on the float, and the power source is Since it is shared, the complication of the configuration and the increase of the manufacturing cost can be avoided.

As a mechanism for vertically supporting the skirt, two parallel upper and lower arms are laterally arranged, one end of each arm is rotatably connected to the float side, and the other end of each arm is skirted. When the parallel link mechanism rotatably connected to the side is used, the mechanism is simple and the bottom dredge machine can be made smaller and lighter.

[Brief description of drawings]

FIG. 1 is a side view showing an overall configuration of an example of a bottom dredge machine according to the present invention.

FIG. 2 is a plan view of the bottom dredge machine.

FIG. 3 is a side view showing a detailed structure near a skirt.

FIG. 4 is a front view of the vicinity of the skirt.

[Explanation of symbols]

 10 Float 11b Air bag 11 Jet pump 12 Air compressor 15 Separation device 16 Jet nozzle for propulsion 20 Skirt 23 Air cylinder 25 Hose 26 Jet nozzle for excavation 27 Air nozzle

Claims (6)

[Claims] 1. A mobile bottom dredger for moving foreign substances accumulated on the bottom of a water surface, comprising a propulsion device, a jet pump for pressurizing water, and an air compressor for pressurizing air. The self-propelled float, the skirt supported by the float so as to be able to move up and down, and the skirt that is immersed in water by the up and down and faces the water bottom, and the water pressurized by the jet pump is used as jet water below the skirt. Means for ejecting, means for ejecting the air pressurized by the air compressor into the skirt to form an ascending water flow, and guiding the ascending water flow formed in the skirt onto the float to remove foreign matter from the water flow. A bottom dredger comprising: a means for collecting. 2. A propulsion device for self-propelling the float,
The bottom dredge machine according to claim 1, which is a jet propulsion device using a jet pump mounted on a float as a power source. 3. The bottom dredge machine according to claim 1, wherein the device for driving the skirt up and down is an air cylinder powered by an air compressor mounted on the float. 4. The bottom dredge machine according to claim 1, 2 or 3, wherein the float is provided with an air bag as its floating means. 5. The bottom dredger according to claim 1, wherein the foreign matter collecting means is provided with a washing shower powered by a jet pump mounted on the float. Machine. 6. A mechanism for supporting the skirt so that the skirt can be moved up and down has two parallel upper and lower arms arranged side by side, one end of each arm is rotatably connected to the float side, and the other end of each arm is connected. The bottom dredge machine according to claim 1, wherein the bottom part is a parallel link mechanism in which the parts are rotatably connected to the skirt side.