JP2965519B2 - Water bottom deposit removal equipment - 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 removing algae and the like adhering to rocks and the like on the bottom of a sea, a river, a lake or the like.

[0002]

2. Description of the Related Art In recent years, damage such as a decrease in the yield of kelp has occurred due to the attachment and propagation of algae and the like on rocks on the seabed to which spores of kelp should adhere. As one of the measures, conventionally, undesired deposits have been removed by spraying high-pressure jet water on the surface of such marine rock. Previously, this work was often done manually by divers, but was dangerous and inefficient.

[0003] Therefore, it has been considered to mechanize this work. For example, in Japanese Patent Publication No. 7-102061,
A removal device equipped with a high-pressure water and high-pressure air injection mechanism is lowered from the ship by a crane and placed on the seabed, and high-pressure water and high-pressure air are supplied by operation from the ship to crush and remove attached matter on the seabed. A system is disclosed in which a substance to be removed floats on the sea surface by an air lift action. This removal device is box-shaped, and has a spray mechanism on the bottom surface. Basically, the position is changed by lifting and lowering with a crane, but there is also the idea of attaching a roller or the like to the lower part of the box and moving it horizontally on the seabed. Further, a partition wall is provided at the bottom of the box so as to surround each spray nozzle, thereby preventing the spray energy from being diffused and attenuated. Also, Japanese Patent Application Laid-Open No. 5-228451 discloses a removing device used in a similar system, and includes a recovery mechanism for positively recovering the removed material.

[0004]

The removal apparatus disclosed in the above-mentioned prior application is operated by moving its position by lifting and lowering with a crane.
It is a point-like construction, which is extremely inefficient when constructing a large area. Japanese Patent Publication No. 7-102061 also discloses an idea of attaching a roller to a box-shaped removing device and moving the box laterally. However, simply providing a roller at the bottom of such a box-shaped device is not enough. It is extremely difficult to move the water bottom with regular irregularities smoothly. Further, in the conventional removing device, since the injection nozzle provided on the bottom portion is fixed in a fixed direction, if the box is inclined due to unevenness of the water bottom, there is a possibility that the injection may not be performed in an appropriate direction. is there. In fact, the natural water bottoms that are constructed are usually uneven everywhere rather than flat.

As described above, the conventional removing apparatus can avoid the danger caused by the manual operation, but there is still much room for improvement in efficiency.

[0006] In view of the above situation, an object of the present invention is to provide a removing device having a spraying mechanism capable of efficiently removing deposits on the water bottom. In particular, it is an object of the present invention to provide a removing device which has a small loss of injection energy and can cope with a large area construction.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, a water bottom deposit removing apparatus according to the present invention removes deposits on a water bottom by injecting high pressure water and high pressure air supplied from a ship. A removal device, comprising: a traction wire connected between the marine vessel and the marine vessel to enable movement at the bottom of the water by being towed by the vessel; a traction frame for attaching the traction wire; and an end of the traction frame. A pair of guide wheels that are pivotally supported, and an injection unit that is connected to the rear of the traction frame, wherein the traction frame and the injection unit each have a connection portion for connecting each other, and a joint The two connecting portions are connected to each other via a pin so as to be freely rotatable, and the injection unit includes a frame provided with the connecting portion and the high-pressure water. The injection direction of the injection nozzle of the fine said high pressure air and a holdable nozzle unit vertically downward.

Further, preferably, the frame portion of the injection unit includes a rectangular frame including a front frame and a rear frame facing each other and a left frame and a right frame facing each other; It comprises a plurality of semicircular frames that extend and contact the water bottom to support the injection unit, and the front frame is provided with a connecting portion with the traction frame.

Still preferably, the frame unit of the injection unit is provided with a pair of suspension arms suspended at one end below a central portion of each of the left and right frames facing each other. One or a plurality of horizontal frames which are bridged so as to interlock both of the pair of suspension arms, and wherein the nozzle unit is installed and fixed on the horizontal frame, thereby being integrally formed with the suspension arms. Move.

Still preferably, at least one horizontal frame has a weight inside.

Still preferably, the plurality of semicircular frames are disposed at equal intervals, and the jets jetted from the jet nozzles of the nozzle unit are adjacent to each other.
The nozzle unit is installed so as to pass through the gap between the two semicircular frames.

Still preferably, the ratio between the diameter of the guide wheel and the diameter of the semicircular frame is 1: 0.8 to 0.8.
0.9.

Still further, preferably, the radius of the guide wheel is about 0.8 to 1.2 m.

Still preferably, a plurality of injection units arranged on the left and right are connected to the traction frame.

[0015]

The apparatus for removing deposits on the bottom of water according to the present invention can be moved laterally on the bottom of the water by being towed by being connected to a ship by a towing wire.

The guide wheels pivotally supported at both ends of the towing frame are preferably large-diameter wheels having a radius of about 1 m, and move smoothly with respect to irregularities of a general construction site to which the present apparatus is applied. be able to.

The nozzle unit attached to the injection unit connected to the rear of the traction frame can always maintain the direction of the injection nozzle vertically downward even if the traction frame or the injection unit is inclined, so that it is always close to the water bottom. And the injection energy is not diffused.

The injection unit has a rectangular frame including a front frame and a rear frame and a left frame and a right frame, and is supported by a plurality of semicircular frames extending downward from the front frame and the rear frame. Because it is, it can tilt and swing freely on the bottom of the water. It is possible to flexibly cope with an uneven water bottom, as compared with a case where the surface contacts the water bottom like a conventional box-shaped injection unit.

The injection unit has a suspension structure composed of a pair of suspension arms rotatably suspended from each of the left frame and the right frame, and a horizontal frame suspended between the suspension arms. These suspension structures can always move vertically downward. When the nozzle unit is installed and fixed on the suspension structure, the nozzle unit can move integrally with the suspension structure, so that the ejection nozzle of the nozzle unit always faces downward in the vertical direction. By appropriately arranging the weight inside the suspension structure, the orientation downward in the vertical direction is performed more quickly.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, a detailed description will be given of an apparatus for removing submerged matter according to the present invention with reference to examples of embodiments.
First, it will be easier to understand the usefulness of the present invention by showing the entire system using the removal apparatus and the construction status thereof.

FIG. 1 is a diagram showing an example of a submarine sediment removal system using the removal apparatus of the present invention. This shows a situation where a crane barge 110 is floated on the sea surface to remove the algae on the rock surface on the sea floor. FIG. 2 is a plan view (partially omitted) of FIG. Various devices are mounted on the crane barge 110. The main components are a crane 112, a pump 119 for pumping seawater, a high-pressure pump 120 for compressing the pumped seawater to produce high-pressure water, an air compressor 118 for producing high-pressure air, and a device for winding various wires. There is a winch 116. Known driving and control devices are omitted. The crane 112 is used for raising and lowering the water bottom deposit removing device 10 of the present invention. After the removal device 10 of the present invention is transported to a construction site by a ship, it is attached to a traction wire 114 and lowered to the bottom of the water by a crane. The pulling wire 114 is a wire for pulling the removing device 10 during construction. The schematically shown removal device 10 comprises a large diameter guide wheel 12.
And an injection unit 20. The injection unit 20
A nozzle unit 22 is provided. During construction, the removal device 10 is pulled by moving the crane barge 110 in the traveling direction of the arrow. In addition, supply hoses for supplying high-pressure water and high-pressure air generated on board to the nozzle unit 22 are also connected, but are not shown. For details on the generation mechanism of high-pressure water and high-pressure air, see
See 02061.

FIG. 2 shows the construction status. The two traction wires 114 are connected to the traction frame 16 of the removal device 10.
Attached to. The removing device 10 is ejected with high-pressure water and high-pressure air toward the bottom of the water while being pulled and moving in the traveling direction. At the location 101 where the removing device has passed, the deposits have been removed. According to the removing device 10 according to the present invention, since the line is formed in this manner, when a predetermined area is constructed, the towing of the removing device is repeated several times while shifting the construction line sideways. Become. FIG.
Is an example in which three ejection units 20 having the same structure are arranged side by side and attached to the traction frame 16.

Next, the apparatus for removing submerged matter according to the present invention will be described in detail with reference to an example. FIG. 3 is a diagram illustrating the entire removal apparatus 10 in which three injection units 20 are arranged side by side. In the present specification, when expressing the configuration of the removing apparatus according to the present invention, the traveling direction during construction is defined as the front side, and the opposite side is defined as the rear side. FIG. 3A is a front view. The towing frame 16 provided horizontally is supported by a pair of guide wheels 12 supported at both ends thereof. Towing frame 1
The axis 6 is coaxial with the axle 14 of the guide wheel 12, but is rotatable about the axis independently of the rotation of the guide wheel. On the front side of the towing frame 16, there are two towing wire attachment portions 18, where the above-mentioned towing wires are attached. When the towing frame 16 is towed forward by the towing wire, the guide wheel 12 rotates, so that the entire removal device 10 advances on the water bottom. Three injection units 20 are connected to the rear side of the traction frame 16. These three injection units 20 are not connected to each other at all. Note that the number of the injection units 20 to be attached is not limited to three.

In FIG. 3A, a member vertically arranged at equal intervals when viewed from the front is a semicircular ring frame 21 composed of half of a circular ring as shown in the side view of FIG. The injection unit 20 is supported by the lowermost points of the plurality of semicircular frames 21 being in contact with the water bottom. A nozzle unit 22 is provided in a space surrounded by a plurality of semicircular frames 21.
Is located. As will be described in detail later, the nozzle unit 2
The second injection nozzle always faces the vertical direction, and jets the jet 30 from the gap between the adjacent semicircular frames 21. 1
Nozzle units 22 in one injection unit 20
Are connected to each other, and are supplied with high-pressure water and high-pressure air from one high-pressure water pipe 26 and one high-pressure air pipe 28 (supply hoses are not shown). Horizontal frame 2
A high-pressure air pipe is fixed to 4a, and the horizontal frame 24b
The nozzle unit 22 is fixed to the nozzle, but as will be described later, these horizontal frames 24a and 24b constitute a part of the suspension structure of the injection unit 20, which is one of the features of the present invention. The number of semicircular frames provided in one injection unit 20 is arbitrary, but it is preferable that one nozzle unit 22 is located at the center of the gap between adjacent semicircular frames.

FIG. 3B is a plan view. The traction frame 16 and each injection unit 20 are connected to the respective connecting portions 19.
And 34 are connected by a joint pin 43. This connection mechanism will be described later with reference to FIGS. The frame unit of the injection unit 20 has a rectangular frame 3 including a front frame 32a, a rear frame 32b, and a left frame and a right frame 32c.
2 and the above-described semicircular frame 21 extending downward from the front frame 32a and the rear frame 32b. still,
Note that the horizontal frame 24a is not directly connected to the left and right frames 32c, nor to the semicircular frame 21.

FIG. 4 is a schematic side view of the removing device 10. The traction frame 16 and the injection unit 20 are connected by a pin connection. That is, the connecting portion 19 on the traction frame 16 side and the connecting portion 34 on the injection unit 20 side are connected by the joint pin 43. The joint pin 43 is rotatable about a rotation axis of the traction frame 16 (coaxially with the axle 14 of the guide wheel 12) as indicated by an arrow 62. The connecting portion 34 on the side of the injection unit 20 moves up and down in conjunction with the rotation of the joint pin 43, and accordingly, the rectangular frame 32 swings around its central portion. This swing is realized because the semicircular frame 21 can easily swing back and forth on the water bottom. As described above, even when the injection unit 20 swings back and forth, the injection unit 20 is stably supported by a point on the outer periphery of the ring of the semicircular frame 21 being in contact with the water bottom.

FIGS. 5A and 5B show the traction frame 1.
FIG. 6 is a view showing an example of pin connection between the injection unit 6 and the injection unit 20 (front frame 32a). Symbol C indicates the tow frame 16
3 shows the rotation axis of the.

FIG. 6 is a schematic side view of the injection unit 20. The side of the rectangular frame 32 is formed by a pair of left and right frames 32c facing each other. These left and right frames 32c
The arm shafts 44 are provided immediately below the respective center portions of the respective, and the suspension arms 25 are suspended from the respective arm shafts 44. The base of the suspension arm 25 is rotatably attached to the arm shaft 44. Although not directly seen from the side view of FIG. 6, the horizontal frames 24a and 24b (see broken lines) shown in FIG. 3 are provided so as to be bridged between the pair of arm shafts 44. In a preferred example, the lower horizontal frame 24b is provided so as to be located on both sides of the distal end of the suspension arm 25 as shown. The pair of suspension arms 25 suspended from the left and right arm shafts 44 and the horizontal frames 24a, 24b suspended between them.
Is rotatable about the arm shaft 44 as shown by a dashed line in the figure. Therefore, the frame part 3
In the case where the suspension structure 2 swings and tilts, the suspension structure can rotate so as to face downward in the vertical direction by its own weight.
That is, regardless of the inclination of the frame part 32, the suspension structure can always face vertically downward. This means that the jet 30 of the nozzle unit 22 (see broken line) is always applied vertically downward. Because the nozzle unit 22 is fixed to the horizontal frame 24 by the fixture 46.
b, and rotates integrally with the suspension structure. For example, it is preferable to incorporate the weight 42 inside the horizontal frame 25b so that the suspension structure can rotate more reliably and smoothly vertically downward. The position, shape, number, and the like of the weights 42 provided to direct the suspension arms 25 vertically downward are arbitrary.

FIG. 7 is a view showing a state in which the water removing apparatus 10 of the present invention configured as described above is towed and the water bottom 100 is advanced. In the construction site to which the present removal device 10 is applied,
Usually, there are irregular irregularities due to the shape of the water bottom and rocks. FIG. 7A shows a case where a step is raised as an example of such unevenness, and FIG. 7B shows a case where the step is lowered. The size of the guide wheel 12 is determined in consideration of the unevenness of the construction site, and if the step is about the radius of the guide wheel 12, the guide wheel 12 can easily go up and down. For example,
Guide wheel 1 of this removal device 10 applied to kelp breeding ground
The radius of 2 is preferably about 0.8 to 1.2 m.

As shown in FIG. 7, since the injection unit 20 following the guide wheel 12 is connected to the traction frame 16 via the joint pin 43, the positional relationship with the guide wheel 12 fluctuates up and down. However, the injection unit 20 itself can tilt and swing to follow smoothly.
Preferably, the ratio between the radius of the guide wheel and the radius of the semicircular frame is 1: 0.8 to 0.9. Further, even if the injection unit 20 is inclined, the suspension arm 25 suspended from the arm shaft 44 is always directed vertically downward, and the injection from the nozzle unit is always performed vertically downward. The semicircular frame 21 supports the injection unit 20 and also serves to protect the nozzle unit from unevenness on the water bottom and maintain a constant distance between the nozzle unit and the water bottom. In this way, it is ensured that the jet from the nozzle unit hits the water bottom without diffusing its energy. In particular, the utility of the present removal device 10 is exhibited when a plurality of injection units 22 are connected as shown in FIG. Since the respective injection units are not connected to each other, for example, one injection unit is located at a position as shown in FIG.
It is possible to be in a position as shown in FIG. As described above, since each of the injection units can independently tilt and swing, it is possible to cope with unevenness in a direction perpendicular to the traveling direction.

FIG. 8A is a schematic configuration diagram of the injection unit 20 showing a cross section taken along line A1-A1 of FIG. The ends of the nine semi-circular frames 21 are joined to the rectangular frame 32, but these semi-circular frames 21
Is partially omitted. Opposite left and right frames 32c
An arm shaft 44 is provided immediately below the center of each of them, and a suspension arm 25 is suspended therefrom. Horizontal frames 24a and 24b are bridged so as to connect both suspension arms 25.

In FIG. 8A, the upper horizontal arm 2
The high-pressure water pipe 28 is mounted on 4a via a fixture 48. At the end of the high-pressure water pipe 28, a high-pressure water supply port 5 is provided.
0, and high-pressure water is supplied thereto from the ship (supply hose is not shown). Further, on the high-pressure water pipe 28, high-pressure water hose ports 52 to each nozzle unit 22 are provided by the number of nozzle units (some of the hoses are not shown). The high-pressure water hose 54 connects the high-pressure water hose port 52 and the high-pressure water inlet 56 of the nozzle unit 22, and supplies high-pressure water to the nozzle unit 22.

On the other hand, in FIG. 8A, the high-pressure air pipe 2 is placed on the lower horizontal arm 24 b via a fixture 46.
6 is attached. A high-pressure air supply port 70 is provided at the center of the high-pressure air pipe 26, and high-pressure air is supplied to the high-pressure air supply port 70 from the ship (a supply hose is not shown). High pressure air piping 26
Are connected between the nozzle units 22 to supply high-pressure air to the nozzle units 22. Therefore, the high-pressure air pipe 26 also has a role of supporting the nozzle unit 22. Preferably, the injection nozzle 72 of each nozzle unit 22 is disposed so as to be located at the center of the gap between the adjacent semicircular frames 21, and the injection is performed from the gap between the semicircular frames 21. The above-described structure for fixing the piping and the nozzle unit is an example, and the present invention is not limited to this structure.
That is, in the ejection unit 20 of the removal device 10, at least the ejection nozzle 72 of the nozzle unit 22 is used.
However, it is sufficient that the structure always faces vertically downward irrespective of the tilt swing of the frame portion.

FIG. 8B is a schematic view of a section taken along line A2-A2 in FIG. The horizontal frames 24a and 24b are each composed of a pair of parallel frames. Injection is performed from between the lower horizontal frames 25b. As shown, the weight 42 may be built in continuously or intermittently over the entire length of the horizontal frame 25b.

FIG. 9 is a structural view showing the nozzle unit 22 in detail. The nozzle unit 22 of the preferred example has a cylindrical shape. FIG. 9A is a plan view, and has a high-pressure water inlet 56 at the center. FIG. 9B is a central sectional view. The high-pressure water is sent downward from the high-pressure water inlet 56 and is supplied to the injection nozzle 72.
Injected from. The nozzle unit 22 is connected to the high-pressure air pipe 26 at two points on the side surface of the cylinder, and a high-pressure air passage 26 a passes through the nozzle unit 22. However, the nozzle unit 22 disposed at the end is connected to the high-pressure air pipe at only one location. The injection nozzle 72 has a double pipe structure, in which high-pressure water 68 is injected from an inner pipe, and high-pressure air 6 is injected from a coaxial outer pipe.
6 is injected. Thus, the high-pressure water 68 is injected with its surroundings surrounded by the high-pressure air 66. The high-pressure air 66 plays a role in preventing the spray energy of the high-pressure water 68 from diffusing and agitating the removed algae to float on the sea surface by an air-lift action. FIG. 9C is a schematic view of a cross section taken along line A3-A3 of FIG. 9B.

FIG. 10 is a diagram showing an example of a construction method using the removing apparatus according to the present invention. For the construction, a 600-ton crane barge and a 50-ton crane were used. Construction was carried out after a crane barge equipped with the removal equipment and other necessary equipment was towed to the construction site. FIG. 10 is a top view of the removal device that has been dropped to the bottom of the water, but the illustration is simplified, and only the triple injection unit 20 is shown. The effective width L1 of the removing device shown in the example is about 5 m.
A single towing will create a line about 5m wide. The construction was performed by towing one line, then moving the removing device laterally by half the effective width of the removing device, and repeating the towing. In this method, a line having a width of about 2.5 m indicated by L2 is overlapped. In this way, when the removing device was pulled five times, a width of about 10 m (shaded portion) was constructed. From the measurement results of the amount of seaweed before construction and the amount of residual seaweed after construction, an average removal rate of 80 to 90% was achieved. In addition, the speed, the number of times, etc. of pulling the removing device are managed according to the situation of the construction site.

Although the preferred embodiment of the apparatus for removing water bottom deposits according to the present invention has been described above, it is obvious that the specific structure of the present apparatus is not limited to the described one. For example, in the removal apparatus according to the present invention, the number of connected injection units and the number of semicircular frames and nozzle units in each injection unit are not limited. Further, the guide wheels and the respective frames of the present removal device need to be made of a robust material. In a preferred example,
H-shaped steel is used for the towing frame and the rectangular frame.

[0038]

The apparatus for removing deposits on the bottom of the water according to the present invention is constructed in a line while moving the water bottom by pulling, instead of performing the point of construction by raising and lowering the injection device frequently as in the prior art. be able to. This allows
The burden of crane operation was reduced, and the accuracy of the construction position was improved. Furthermore, the construction target area and the construction area per hour both increased, and construction efficiency was remarkably improved.

In addition, the removing apparatus according to the present invention has a structure capable of smoothly moving forward regardless of the unevenness of the bottom of the construction site, and a structure capable of always spraying the spray nozzle vertically downward without energy loss. This also improved construction efficiency.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a seabed deposit removal system using the removal apparatus of the present invention.

FIG. 2 is a plan view of FIG. 1, showing a construction state using the removing apparatus of the present invention.

3A is a front view and FIG. 3B is a plan view of the removing device of the present invention in which three injection units are juxtaposed.

FIG. 4 is a schematic side view of the removing device of the present invention.

FIGS. 5A and 5B are diagrams showing an example of pin connection between the traction frame and the injection unit (front frame).

FIG. 6 is a schematic side view of an injection unit of the removal device of the present invention.

FIG. 7 is a view showing a state in which the removal device of the present invention is pulled to advance the water bottom.

FIG. 8A is a schematic configuration diagram of the injection unit 20 showing a cross section taken along line A1-A1 of FIG. (B) is an A2-A2 sectional view.

FIG. 9 is a configuration diagram of a nozzle unit. (A) is a plan view, (B) is a central sectional view, and (C) is an A3-A3 sectional view.

FIG. 10 is a diagram showing an example of a construction method using the removing device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Removal apparatus 12 Guide wheel 14 Axle 16 Tow frame 18 Tow wire attachment part 19, 34 Connection part 20 Injection unit 21 Semicircular frame 22 Nozzle unit 24a, 24b Horizontal frame 25 Suspension arm 25a Suspension arm base 26 High pressure air piping 26a High pressure Air communication hole 28 High-pressure water pipe 30 High-pressure water and high-pressure air jet 32 Rectangular frame 32a Front frame 32b Rear frame 32c Left and right frame 42 Weight 43 Joint pin 44 Arm axis 46 High-pressure air pipe fixing tool 48 High-pressure water pipe fixing tool 50 High-pressure water Supply port 52 High-pressure water hose port 54 High-pressure water hose 56 High-pressure water inlet 70 High-pressure air supply port 72 High-pressure water nozzle 73 High-pressure air ejection part 100 Water bottom 101 Construction site 102 Water bottom attachment 110 Crane barge 112 Crane 114 Upper pull wire 116 winch 118 air compressor 119 Mizukuma pump 120 water pressurizing pump 122 Anchor wire

──────────────────────────────────────────────────続 き Continuing on the front page (72) Yoshito Yoneyama 7-10-4 Nishigotanda, Shinagawa-ku, Tokyo Tomen Construction Machinery Co., Ltd. (72) Yoshimi Yamada 2-chome Hakata Station Hakata-ku, Fukuoka City, Fukuoka Prefecture No. 9-25 Inside Flow Techno Co., Ltd. (56) References JP-A-5-168388 (JP, A) JP-A-7-1223897 (JP, A) JP-A 8-154559 (JP, A) JP-A Sho 55-64737 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01M 21/00 B05B 1/14

Claims (8)

(57) [Claims] 1. An apparatus for removing deposits on a water bottom by injecting high-pressure water and high-pressure air supplied from a ship, wherein the removal device is configured to be able to move on the water bottom by being towed by the ship. A traction wire connected to a ship, a traction frame for attaching the traction wire, a pair of guide wheels pivotally supported at both ends of the traction frame, and an injection unit coupled to the rear of the traction frame. The towing frame and the injection unit each have a connection portion for connection with each other, and are connected by connecting both connection portions rotatably to each other via a joint pin, and The unit is a frame unit provided with the connecting portion, and a nozzle unit capable of holding the injection direction of the injection nozzle of the high-pressure water and the high-pressure air vertically downward. A device for removing deposits on the bottom of water, comprising: 2. The frame unit of the injection unit includes a rectangular frame including a front frame and a rear frame facing each other and a left frame and a right frame facing each other, and extending downward from the facing front frame and the rear frame. The apparatus according to claim 1, further comprising a plurality of semicircular frames supporting the injection unit by being in contact with a water bottom, wherein the connection portion is provided on the front frame. 3. The frame unit of the injection unit,
A pair of suspension arms suspended at one end at the lower side of the central part of each of the opposed left frame and right frame, and one or a plurality of bridges suspended to interlock both the pair of suspension arms The apparatus according to claim 2, wherein the nozzle unit moves integrally with the suspension arm when the nozzle unit is installed and fixed on the horizontal frame. 4. The apparatus according to claim 3, further comprising a weight inside at least one of the horizontal frames. 5. A method according to claim 1, wherein the plurality of semicircular frames are arranged at equal intervals, and a jet jet from the jet nozzle of the nozzle unit passes through a gap between two adjacent semicircular frames. 5. The apparatus according to claim 3, wherein the nozzle unit is installed and fixed. 6. The method according to claim 2, wherein a ratio between a diameter of the guide wheel and a diameter of the semi-circular frame is 1: 0.8 to 0.9. Water bottom deposit removal device. 7. The guide wheel has a radius of about 0.8 to about 0.8.
The apparatus for removing deposits on the bottom of water according to any one of claims 1 to 6, wherein the length is 1.2 m. 8. The apparatus according to claim 1, wherein a plurality of injection units arranged on the left and right are connected to the traction frame.