CN109561669B

CN109561669B - Buoy with pipe and method for manufacturing the same

Info

Publication number: CN109561669B
Application number: CN201780043758.5A
Authority: CN
Inventors: 金永根
Original assignee: CLIFE CO Ltd
Current assignee: CLIFE CO Ltd
Priority date: 2016-07-14
Filing date: 2017-07-13
Publication date: 2021-08-31
Anticipated expiration: 2037-07-13
Also published as: WO2018012909A1; CN109561669A

Abstract

The buoy of the present invention can include: a jacket portion formed of a cylindrical shape having a central hole sealed from the outside; and a tube part made of a flexible material, installed in the central hole, and expanded when gas is injected; wherein the expanded tubular portion is deformable along the inner surface of the envelope portion when the expanded tubular portion is in physical contact with the inner surface of the envelope portion.

Description

Buoy with pipe and method for manufacturing the same

Technical Field

The invention relates to a buoy capable of floating on water surface and a manufacturing method thereof.

Background

In the coastal region, many marine organism farms are operated in which fish, shellfish, and marine algae are raised inside a fishing net or on a culture plate by suspending the fishing net or the culture plate on a floating body.

Although the floating body is a necessary component for use in installing a fishing net or a farming plate, it is also a cause of marine pollution.

In order to solve the problem of marine pollution, the polypropylene material can be used for replacing the existing floating body made of the polystyrene foam. However, even when polypropylene is used, there is a problem that the marine pollution preventing effect is very small and the productivity is low because there is a possibility that fragments are generated when a strong impact is applied.

Disclosure of Invention

Technical subject

The invention aims to provide a buoy which can prevent marine pollution and has high productivity and a manufacturing method thereof.

Means for solving the problems

The buoy to which the present invention is applied can include: a jacket portion formed of a cylindrical shape having a central hole sealed from the outside; and a tube part made of a flexible material, installed in the central hole, and expanded when gas is injected; wherein the expanded tubular portion is deformable along the inner surface of the envelope portion when the expanded tubular portion is in physical contact with the inner surface of the envelope portion.

The method for manufacturing a float to which the present invention is applied can include: preparing a jacket portion having a cylindrical shape with a central hole sealed from the outside; inserting a pipe portion expandable at the time of gas injection into the central hole through an inlet and an outlet formed in the jacket portion; injecting the gas through an injection port formed in the pipe portion; and sealing the inlet and the outlet after the pipe portion is expanded by the injection of the gas and is brought into close contact with an inner surface of the jacket portion.

Effects of the invention

The buoy to which the present invention is applied includes a pipe portion that expands when gas is injected, and thus a large-volume buoy can be formed using a small amount of material.

Further, a large buoyancy can be provided by means of the pipe portion.

Further, the float to which the present invention is applied can include a jacket portion for protecting the tube portion. The envelope portion has a central hole sealed from the outside, and can protect the tube portion from external impact or external environment such as ultraviolet rays.

When the thickness of the envelope portion is small, it may be difficult to maintain the set shape, but since the envelope portion can be supported by bringing the tube portion into close contact with the inner surface of the envelope portion, the envelope portion can be smoothly maintained in the set shape.

Further, since the jacket portion and the tube portion are made of the same thermoplastic resin, recycling can be easily achieved by a thermal process after recovery.

The sheath portion and the tube portion made of the same thermoplastic resin can be easily joined by thermal fusion.

An insertion groove into which a rib formed to protrude from the inner surface of the envelope portion can be inserted can be formed in the tube portion. By means of the insertion groove, even in the case where various protruding members including ribs induced by the bending lines are present on the inner side surface of the jacket portion, the tube portion can be closely adhered to the inner side surface of the jacket portion. Thereby, the pipe portion can provide the maximum buoyancy in the limited space constituted by the envelope portion.

In the case where the envelope portion is ruptured and the tube portion is torn due to external impact, a loss of buoyancy may be caused. In order to maintain buoyancy in the event of rupture of the envelope portion and tearing of a portion of the tube portion, the tube portion can include a plurality of gas cells that can be filled with gas.

In order to fill the central hole of the envelope portion with the tube portion formed by gathering a plurality of airbags, and to strongly bend and attach to the inner side surface of the envelope portion, for example, a reinforcing material, a protective sheet, or the like can be used.

The float to which the present invention is applied can also be produced by a method of injecting a gas in a state where the pipe portion is inserted into the central hole. This makes it possible to more easily and reliably attach the tube portion to the inner surface of the jacket portion, as compared with a process of pressurizing the tube portion and simultaneously covering the jacket portion in a state where the tube portion is filled with gas.

Drawings

Fig. 1 is an oblique view illustrating a float to which the present invention is applied.

Fig. 2 is a sectional view illustrating a float to which the present invention is applied.

Fig. 3 is a cross-sectional view illustrating another buoy to which the present invention is applied.

Fig. 4 is a schematic diagram illustrating a cross section of a bending line.

Fig. 5 is a schematic diagram illustrating a pipe section to which the present invention is applied.

Fig. 6 is a schematic diagram illustrating another pipe section to which the present invention is applied.

Fig. 7 is a schematic diagram illustrating a method of manufacturing a float to which the present invention is applied.

Detailed Description

Fig. 1 is an oblique view illustrating a float to which the present invention is applied. Fig. 1 illustrates a state in which a part of the jacket portion 100 is cut away to show the tube portion 200.

The float illustrated in fig. 1 may include a jacket portion 100 and a tube portion 200.

The enclosure portion 100 can be constituted by a cylindrical shape having a central hole 109 sealed with respect to the outside. As an example, the cuff 100 can be manufactured in a cylindrical shape, a spherical shape, or the like.

The envelope portion 100 with the sealed central hole 109 can have buoyancy by itself. However, when the float is manufactured using only the jacket portion 100, the thickness of the jacket portion 100 must be increased in order to avoid the change in the shape of the jacket portion 100. Further, since the envelope portion 100 forms the outer shape of the float and is directly exposed to the external environment, it is preferably made of a material having high corrosion resistance, weather resistance, chemical resistance, solvent resistance, and strength.

However, when the enclosure portion 100 is made of a material having a high corrosion resistance and a large thickness, the buoyancy is substantially lost because the weight is too heavy compared to the volume of the center hole 109.

In order to provide sufficient buoyancy, a method of forming a foam body of a material such as styrofoam in a predetermined shape, securing the buoyancy, and then forming a thin envelope portion 100 on the outer surface of the foam body has been conventionally adopted.

The present invention replaces the foam with a completely new component, namely, the tube portion 200, in order to improve productivity and convenience in use.

The tube portion 200 fits into the central bore 109 of the enclosure portion 100 and may expand when gas is injected. The tube 200 can comprise a flexible material that expands when gas is injected.

As an example, the tube portion 200 can include materials such as PolyPropylene (PolyPropylene), PolyEthylene (PolyEthylene), olefin (olefin), LDPE (Low Density PolyEthylene), Elastomer and Plastomer (Elastomer & plastic), HDPE (High Density PolyEthylene), and the like.

The jacket 100 and the tube 200 may be made of thermoplastic resin having the same material so that the entire float may be melted and reused. In this case, since the envelope portion 100 is made of a flexible material, it may not be able to maintain a predetermined shape and may be deformed.

The pipe portion 200 expanded by the gas injection can maintain the shape of the jacket portion 100 while providing buoyancy.

In order to maintain the shape of the jacket portion 100, the pipe portion 200 expanded by the gas injection can be deformed along the inner surface of the jacket portion 100 by physical contact with the inner surfaces on both sides of the jacket portion 100 facing each other with the center hole 109 interposed therebetween, for example, the upper and lower inner surfaces or the left and right inner surfaces of the jacket portion 100 in fig. 2. The tube portion 200 expanded to be deformable along the shape of the inner surface of the jacket portion 100 can elastically support the entire inner surface of the jacket portion 100.

The envelope part 100 can be provided with a connection part to be connected to an external support table. The connection portion can be connected to the external support table by at least one of a cable, a bolt, and a hook, for example.

The jacket portion 100, which is in close contact with the pipe portion 200 and elastically supported by the pipe portion 200, can maintain a predetermined shape, and can absorb impact by the pipe portion 200 when external impact is applied, thereby having an advantage of low risk of damage.

Further, it is also possible to pressurize the jacket portion 100 in the outer direction by the elastic force of the injected gas, thereby restricting the sliding of the pipe portion 200 close to the inner side surface of the jacket portion 100 with respect to the jacket portion 100 and thereby preventing the generation of frictional heat.

Since the tube 200 can be filled and brought into close contact with the inner surface of the jacket 100 and the tube 200 are made of the same thermoplastic resin, the jacket 100 and the tube 200 can be joined by simple thermal welding.

As an example, the outer side surface of the tube portion 200 in contact with the inner side surface of the jacket portion 100 can be easily heat-welded to the inner side surface of the jacket portion 100. By joining the jacket portion 100 and the pipe portion 200, problems due to frictional heat between the jacket portion 100 and the pipe portion 200 can be fundamentally eliminated.

As another example, the inner side surface of the cuff portion 100 and the outer side surface of the tube portion 200 can be bonded by an adhesive interposed therebetween.

To ensure proper operation of the buoy, the outer side of the envelope 100 can be provided with a bending line 110.

The bending line 110 may be a line for winding the cable 10 or the rope along the outer circumferential surface of the envelope portion 100. As an example, the bending line 110 can be a part of the outer circumferential surface of the jacket portion 100 for winding the cable. As an example, the bending line 110 can be formed in a groove shape into which the cable 10 can be inserted. The above-described cable 10 can be connected to a rope fixed to the sea bottom or the like. A pocket 130 having a width and depth greater than the groove shape of the bend line 110 can be formed in a portion of the bend line 110. The pocket 130 can be used to carry the cable 10 strongly tied to the bending wire 110 by a hook.

When the depth of the bending line 110 is greater than the thickness of the envelope portion 100, a rib 120 protruding along the bending line 110 can be formed at the inner side of the envelope portion 100.

In order to elastically support the jacket portion 100, the volume of the pipe portion 200 inserted into the central hole 109 of the jacket portion 100 can be larger than the volume of the central hole 109. Since the pipe portion 200 can be deformed in accordance with the shape of the inner surface thereof in the process of being fitted into the center hole 109 of the jacket portion 100, it can be also different from the shape of the inner surface of the jacket portion 100. As an example, although the jacket portion 100 in fig. 2 has a sectional shape close to a rectangle, the sectional shape of the tube portion 200 after being filled with gas can be an ellipse.

By inserting the tube part 200 having a volume larger than the center hole 109 into the center hole 109 of the jacket part 100, the gas filled into the tube part 200 can be compressed, and the compression force at this time can be converted into an elastic force applied to the jacket part 100.

In the process of fitting the tube portion 200 to the center hole 109 of the jacket portion 100, it can be pressed by the rib 120 protruding from the inner side surface of the jacket portion 100. In the pipe portion 200, an insertion groove 210 into which the rib 120 is inserted can be naturally formed at a portion pressed by the rib 120. In other words, even if the shape of the tube portion 200 is different from the shape of the central hole 109 of the jacket portion 100, it can be attached to the jacket portion 100 in a flexible manner. This makes it possible to apply a single-shaped pipe portion 200 to the envelope portions 100 of various shapes, thereby improving productivity and simplifying maintenance work.

Further, in the case where the insertion groove 210 is naturally formed, the rib 120 protruding from the inner side surface of the jacket portion 100 and the tube portion 200 may be difficult to completely adhere.

As an example, as shown in fig. 2, the insertion groove 210 naturally formed by pressurization of the rib 120 may not be close to the sidewall of the rib 120 to form a certain gap. Further, since the insertion groove 210 can be formed at all positions of the tube part 200 rather than at a specific position, when the cuff part 100 is rotated by an external force, the tube part 200 may not be rotated together and thus may be slid. Since there is a possibility that a problem such as frictional heat may be caused when relative sliding occurs between the jacket portion 100 and the pipe portion 200, the insertion groove 210 is preferably formed only at a specific position of the pipe portion 200.

An insertion groove 210 into which the rib 120 is inserted can be formed in a portion of the tube portion 200 that faces the rib 120. In this case, the rib 120 may be a protruding element from the inner surface of the cover 100 through various grooves such as a bending line 110 formed on the outer surface of the cover 100.

At this time, when the insertion groove 210 is formed in advance, the other portion of the tube portion 200 can be closely attached to the inner surface of the jacket portion 100 when the rib 120 is inserted into the insertion groove 210. As an example, in the case where the insertion groove 210 is formed in advance in the tube part 200, the tube part 200 can be completely attached to all portions including the side wall of the rib 120.

The insertion groove 210 formed in advance in the tube portion 200 can restrict sliding between the cuff portion 100 and the tube portion 200. The insertion groove 210 formed in advance in the pipe portion 200 can be protruded in a direction opposite to the rib 120 when gas is injected, and the protrusion of the insertion groove 210 is restricted by the rib 120 when gas is injected after the pipe portion 200 is inserted into the middle hole 109 of the jacket portion 100, so that the sectional shape of the pipe portion 200 can be normally maintained as shown in fig. 3.

Fig. 4 is a schematic diagram illustrating a cross section of the bending line 110.

The bending line 110 may be deformed into a convex shape without maintaining the groove shape by being pressed by the tube part 200 elastically supporting the envelope part 100. The cable 10 cannot be inserted when the bending wire 110 is deformed into a convex shape, and therefore, it is necessary to provide a means for maintaining the groove shape of the bending wire 110.

The buoy to which the present invention is applied may be provided with a separation preventing member 140 that crosses an entrance of the bending wire 110 for inserting the cable 10.

The separation preventing member 140 may be formed in a rod shape connecting one side wall and the other side wall of the bending line 110. Alternatively, the separation preventing member 140 can include, for example, cloth, a rod, etc. having both ends connected to the outer side surface of the envelope portion 100 while crossing the bending line 110.

When the bending line 110 of the groove shape is deformed into a convex shape, first, the entrance width of the bending line 110 needs to be increased. However, since the separation preventing member 140 can fix the width of the entrance of the bending line 110, the deformation of the bending line 110 into a convex shape can be restricted.

Further, the separation preventing member 140 can also prevent the cable 10 wound along the bending line 110 from being separated. Further, when the separation preventing member 140 formed in a rod shape is used, most of the cable 10 can be maintained in a state of being exposed to the outside, and thus the cable 10 can be easily connected to another rope or a structure.

Further, when only one balloon 250 for filling air is formed in the tube portion 200, all buoyancy may be lost as long as the balloon 250 is ruptured by external impact. Further, it may be difficult to form the balloon 250 to conform to the volume of the central aperture 109 of the envelope portion 100.

Therefore, it is preferable to provide the pipe portion 200 which does not cause loss of all buoyancy even when an external impact is applied and can be easily inserted into the central hole 109 of the cuff portion 100.

Fig. 5 is a schematic diagram illustrating a pipe portion 200 to which the present invention is applied.

The tube portion 200 can include a plurality of balloons 250 and a connecting member 260.

The airbag 250 may extend in the longitudinal direction of the envelope portion 100, and the airbag 250 may be provided with a gas space 209 for injecting gas.

The connection member 260 can connect the respective tubes in parallel.

The entire tube portion 200 can be configured in a plate-like shape with the balloon 250 protruding in the middle by means of the connecting member 260. At this time, the pipe portion 200 can be attached to the center hole 109 of the jacket portion 100 in a curled state in a closed curve shape with an imaginary line extending in the longitudinal direction of the jacket portion 100 as an axis.

The upper drawing in fig. 5 illustrates the tube portion 200 provided with the balloon 250 and the connection member 260, and the lower drawing in fig. 5 illustrates a state in which an appropriate number of balloons 250 corresponding to the center hole 109 of the envelope portion 100 are circularly crimped and fitted to the center hole 109 of the envelope portion 100.

When the gas-filled airbag 250 has a certain volume, the volume of the tube portion 200 inserted into the central hole 109 of the envelope portion 100 will depend on the number of the airbags 250 inserted into the central hole 109. Therefore, the user does not need to adjust the amount of gas filled into the tube portion 200, but only needs to adjust the number of the airbags 250 inserted into the envelope portion 100, and thus can easily prepare tube portions 200 corresponding to envelope portions 100 of different sizes. Further, since a plurality of air cells 250 are inserted into the central hole 109, even if some of the air cells 250 are broken, the float can normally float on the water surface by the buoyancy of the other air cells 250.

In particular, in the circular crimp-mounted air bag 250, the air bag 250 disposed on the deep layer portion near the center of the center hole 109 can be protected by other air bags 250 surrounding itself. Therefore, even when a strong external impact is applied, the deep-layer air bag 250 protected by the peripheral air bag 250 can be normally operated, and thus the most serious case in which the buoy sinks into the sea bottom can be effectively prevented.

Further, the plurality of airbags 250 can reduce the degree to which the gas injected into the single envelope portion 100 or tube portion 200 expands or contracts due to external heat. This is because the tube portion 200 is constituted by a plurality of sealed spaces.

The pipe portion 200 can be formed by the 1 st plate material 201 and the 2 nd plate material 202 having plate shapes facing each other.

At this time, the unjoined portion of the 1 st plate material 201 and the 2 nd plate material 202 can constitute the airbag 250 for filling the gas. And the joint portion between the 1 st plate 201 and the 2 nd plate can constitute a connecting member 260 for connecting the plurality of airbags 250. At this time, the connection member 260 can be based between the respective airbags 250.

An air injection passage 259 for injecting air can be provided at an end of the air bag 250. At this time, the bending line 110 may be formed to face the air injection passage 259.

The respective air injection passages 259 can form a concave groove on the air bladder 250 expanded by injecting air in a parallel direction in which the respective air bladders 250 are connected to each other.

Therefore, by forming the bending line 110 to face the air injection passage 259, the insertion groove 210 for inserting the bending line 110 can be naturally formed.

Air injection passages 259 can also be formed at both ends of the bladder 250. In this case, one, i.e., two insertion grooves 210 in total can be formed at both ends, respectively.

Fig. 6 is a schematic diagram illustrating another pipe section 200 to which the present invention is applied.

The jacket portion 100 can be provided with a reinforcing material 190 having a rod shape which passes through the central hole 109 and is connected at both ends to the inner side surface of the jacket portion 100. Since the reinforcing material 190 itself preferably has buoyancy, the reinforcing material 190 preferably includes at least one of expanded polystyrene, expanded polypropylene, and polyurethane.

The reinforcing material 190 having both ends connected to the inner side surface of the envelope portion 100 can maintain the shape of the envelope portion 100 in a set shape.

Further, the reinforcing material 190 can contact and support the tube portion 200.

Further, the reinforcing material 190 can be used as a reference for the circularly curled balloon 250.

Therefore, the reinforcing material 190 can make the curling state of the bladder 250 of each product the same, thereby stably maintaining the quality of each product.

The reinforcing member 190 may have a tubular shape with a central hole to reduce its own weight.

Further, when the air bags 250 of the same specification are used, it may be difficult to form the insertion groove 210 for inserting the rib 120 formed at the inner side surface of the envelope portion 100. This is because the insertion of the grooves 210 into all the air cells 250 may cause a decrease in buoyancy.

When a position close to the center of the center hole 109 is defined as a 1 st position and a position far from the center of the center hole 109 is defined as a 2 nd position, the first pipe portion (1) and the second pipe portion (2) can be arranged at the 1 st position and the 2 nd position, respectively.

Further, a plate-shaped protective sheet 180 may be interposed between the 1 st position and the 2 nd position. The protective sheet 180 may be formed in a plate-like shape and may be wound around the first pipe portion (1 st pipe portion) disposed at the first position.

Each of the airbags 250 included in the first tube portion (r) disposed at the 1 st position can naturally move to the optimum position by being pressurized by the protective sheet 180. This makes it possible to easily standardize the first pipe portion (i) by the protective sheet 180.

Further, the protective sheet 180 can protect the first pipe portion (r) when an external impact is applied.

The jacket 100 according to the present invention may be formed to allow water to flow therethrough. As an example, a hole through which water can flow can be formed in the wrapper portion 100 to which the present invention is applied. Alternatively, the envelope part 100 may be formed of a cloth or a net structure through which water can flow.

At this time, the protective sheet 180 can seal the first pipe part (r) in order to prevent water passing through the jacket part 100 from flowing into the first pipe part (r).

An insertion groove 210 for inserting the rib 120 protruding from the inner surface of the jacket portion 100 can be formed in the second pipe portion (2 nd position). The second pipe portion located at the 2 nd position can be closely attached to the inner surface of the cuff portion 100.

By using the protective sheet 180, the first pipe portion (first) and the second pipe portion (second), the same first pipe portion (first) can be applied regardless of the specification of the jacket portion 100. Further, the second pipe portion corresponding to the specification of the envelope portion 100 is attached between the protective sheet 180 and the envelope portion 100, whereby the float can be manufactured.

In the float to which the other embodiment of the present invention is applied, the protective sheet 180 can be disposed alone to the 2 nd position with the second pipe portion (c) excluded.

As an example, the protection sheet 180 in a plate shape can be interposed between the tube part 200 and the envelope part 100 and wind the tube part 200. By using the protective sheet 180, the cuff 100 can form a certain gap with a part of the pipe portion 200, thereby minimizing the phenomenon that the cuff 100 is excessively expanded due to the expansion of the pipe portion 200. An insertion groove 210 into which the rib 120 protruding from the inner surface of the cuff portion 100 is inserted can be formed in one surface of the protective sheet 180 facing the inner surface of the cuff portion 100.

When the protective sheet 180 comprises, for example, polystyrene or the like, thermal expansion or thermal contraction of the gas filled in the first pipe portion (r) can be reduced by means of the heat insulating function. Protective sheet 180 may also be made of the same material as tube 200 for ease of recycling.

In the present embodiment, it is possible to standardize and protect the first pipe part (r) and to install the pipe part 200 to various kinds of envelope parts 100 by only replacing the second pipe part (r).

The pipe portion 200 to which the present invention is applied can be inserted into the envelope portion 100 in a state filled with gas. However, it may be difficult to mount the tube portion 200 having a volume larger than the center hole 109 of the envelope portion 100 to the center hole 109.

For convenience of manufacture, the pipe portion 200 can be injected with gas after the pipe portion 200 is inserted into the intermediate hole 109.

As an example, the cuff 100 can be provided with an access 159 to connect the centering hole 109 with the outside. The pipe portion 200 can be provided with an injection port 203 for injecting gas.

After the main body of the tube portion 200 is inserted into the central hole 109 and the gas is injected, the inlet 203 can be sealed inside the central hole 109, and the inlet and outlet can be sealed by thermal welding.

The pipe portion 200 expanded by the gas injection can be brought into close contact with the inner surface of the jacket portion 100 and deformed along the shape of the inner surface of the jacket portion 100, thereby elastically supporting the jacket portion 100.

The float to which the present invention is applied can adopt a special configuration so that the pipe portion 200 and the envelope portion 100 can be sealed by injecting gas after the pipe portion 200 is inserted into the envelope portion 100.

The float to which the present invention is applied may be provided with a protrusion 150 protruding from the outer surface of the cover 100.

The projection 150 can be provided with an access 159 for the alignment hole 109 and the outside connection.

The pipe portion 200 can be provided with an injection port 203 for injecting gas.

After the gas is injected into the pipe portion 200 through the injection port 203, the injection port 203 can be sealed and the entrance and exit can be sealed. As an example, the injection port 203 can be terminated after the main body of the tube portion 200 is inserted into the central hole 109 through the inlet and outlet 159 and the gas injection is completed. In this case, the termination can be performed by thermal welding.

When a heat insulating material is interposed between the inlet and the duct portion 200, heat applied to the end of the projection portion 150 can be prevented from being transmitted to the duct portion 200.

In a state where the inlet 203 is aligned with the inlet and outlet, the inlet 203 can be sealed and the outlet 159 can be sealed by performing the thermal welding while pressurizing the protrusion 150 in a direction inclined to the protruding direction of the protrusion 150.

When the envelope portion 100 and the tube portion 200 are formed of the same material, the inlet and outlet 159 and the inlet 203 can be completely integrated by thermal welding.

After the gas-injected pipe portion 200 is disposed to the middle hole 109, the inlet and outlet can be sealed by performing thermal welding while pressurizing the end of the protruding portion 150.

At this time, by cutting the end of the protrusion 150 that is heat-welded, it is possible to newly provide a new access for connecting the centering hole 109 and the outside while shortening the protrusion length of the protrusion 150. By providing the newly provided inlet and outlet as described above, it is possible to additionally inject gas or replace the existing pipe section 200 with a new pipe section 200.

The protruding portion 150 may be formed as a carrying handle to be held by a hand of a user after sealing the entrance by thermal fusion.

First, the cylindrical envelope portion 100 including the center hole 109 and the inlet and outlet for connecting the center hole 109 and the outside can be prepared.

The tube portion 200 expanded when gas is injected can be inserted into the intermediate hole 109 through the inlet and outlet 159 and the like formed in the envelope portion 100.

After the pipe portion 200 is inserted into the central hole 109, gas can be injected through the injection port 203 formed in the pipe portion 200.

By the injection of the gas, the pipe portion 200 is expanded and closely attached to the inner surface of the jacket portion 100, and then the inlet 203 and the outlet 159 can be sealed. The inlet 203 can be terminated and then the entrance can be terminated. As the ending method, a method of thermal welding can be used.

At this time, the process of preparing the jacket portion 100 may include a step of forming the protrusion portion 150 protruding from the outer side surface of the jacket portion 100. The outlet 159 can be formed in the projection 150 by the forming function of the projection 150.

The step of sealing the inlet 203 and the outlet 159 may include a step of heating the protrusion 150 while pressurizing the protrusion 150 in a direction inclined from the protrusion direction of the protrusion 150 after sealing the inlet 203. By applying pressure and heat to the protrusion 150, the inlet and outlet 159 can be sealed by thermal welding of the inlet and outlet 159.

In this case, the protrusion 150 can be closed after the inlet 203 and the outlet 159 are sealed.

The portion where the protruding portion 150 is heat-welded can be defined at the end of the protruding portion 150 in the protruding direction of the protruding portion 150. Thereby, a new inlet and outlet 159 can be provided by cutting the end of the thermally welded protruding portion 150. By leaving an excess portion in the heat-welded portion of the projection 150, when the tube portion 200 in which gas leaks inside needs to be replaced, the tube portion 200 can be replaced or gas can be injected through the inlet and outlet 159 and the injection port 203 which are formed by cutting the heat-welded end portion of the projection 150. Next, the projecting portion 150 can be sealed again by thermal fusion bonding, and the projecting portion 150 can be used for maintenance.

The protrusion 150 can also be used as a handle for transporting the float.

By applying the float manufacturing method of the present invention, it is not necessary to manufacture the pipe portion 200 in accordance with the inner surface shape of the envelope portion 100, and therefore, the pipe portion 200 can be manufactured more easily.

Further, the elastic force when the tube portion 200 elastically supports the envelope portion 100 can be adjusted by adjusting the injection amount of the gas.

A buoy to which the present invention is applicable can include: a jacket portion 100 formed of a cylindrical shape having a central hole 109; and a tube portion 200 made of a flexible material, attached to the central hole 109 of the envelope portion 100, and capable of expanding when gas is injected.

The tube 200 may include a plurality of balloons 250 and a connecting member 260.

The airbag 250 may extend along the longitudinal direction of the envelope portion 100.

The above-described airbag 250 can be provided with a gas space 209 for injecting gas.

The connection member 260 can connect the airbags 250 in parallel.

The tube portion 200 may be formed in a plate shape with a protruding balloon 250 formed in the middle thereof by the connection member 260.

The airbag 250 extending in the longitudinal direction of the envelope portion 100 may be mounted in a stacked state in the central hole 109 of the envelope portion 100.

The airbag 250 provided in the tube portion 200 may be stacked in a direction perpendicular to the longitudinal direction of the envelope portion 100.

The tube portion 200 including the plurality of airbags 250 stacked and arranged in the direction perpendicular to the longitudinal direction of the envelope portion 100 can be deformed along the inner surface of the envelope portion 100 by being physically contacted with the inner surfaces of both sides of the envelope portion 100 facing each other with the center hole 109 interposed therebetween.

The plurality of airbags 250 can pressurize the envelope portion 100 in a direction toward the outside by the gas injected, and can support both inner side surfaces of the envelope portion 100.

The envelope portion 100 is elastically supported by the gas injected into the plurality of air bags 250 to maintain a predetermined shape.

Claims

1. A buoy, comprising:

a jacket portion formed of a cylindrical shape having a central hole; and the number of the first and second groups,

a tube part made of flexible material, installed in the central hole of the envelope part, and capable of expanding when gas is injected;

the tube portion includes a plurality of air cells and a connecting member,

the air bag extends along the length direction of the envelope part,

the above-mentioned airbag is provided with a gas space for injecting gas,

the connecting parts connect the air bags in parallel,

an airbag extending in the longitudinal direction of the envelope portion is mounted in a laminated state in the central hole of the envelope portion,

the airbag disposed in the tube portion is disposed in a state where a plurality of airbags are stacked in a direction perpendicular to the longitudinal direction of the envelope portion,

the tube portion including a plurality of the airbags stacked and arranged in a direction perpendicular to a longitudinal direction of the envelope portion is deformed along an inner surface of the envelope portion by being physically contacted with inner surfaces of both sides of the envelope portion facing each other with the center hole interposed therebetween,

the plurality of airbags pressurize the envelope portion in a direction toward the outside by the injected gas and support both inner side surfaces of the envelope portion.

2. The buoy of claim 1, wherein:

the envelope portion is elastically supported by gas injected into the plurality of airbags to maintain a predetermined shape.

3. The buoy of claim 1, wherein:

the tube portion is formed in a plate-like shape with a protruding air bag formed in the middle thereof by the connecting member.

4. The buoy of claim 1, wherein:

a bending wire for winding the cable is provided on the outer peripheral surface of the envelope portion,

and a separation preventing part crossing the bending line and having two ends connected to the outer side of the cover part.

5. The buoy of claim 1, wherein:

a rib protruding along the bending line is formed on the inner side surface of the envelope part,

an insertion groove for inserting the rib is formed at a position facing the rib in the envelope,

when the rib is inserted into the insertion groove, the other part of the tube portion is closely attached to the inner side surface of the envelope portion.

6. The buoy of claim 1, wherein:

the sealing sleeve part is provided with a connecting part connected with an external support platform,

the connecting portion is connected to the external support table by at least one of a cable, a bolt, and a hook.

7. The buoy of claim 1, comprising:

a protective sheet interposed between the tube portion and the envelope portion;

wherein the protective sheet winds the tube.

8. The buoy of claim 7, comprising:

the protective sheet restricts the inflow of water by sealing the tube portion.

9. The buoy of claim 1, comprising:

the above-mentioned cover portion can be used for water to flow through.

10. The buoy of claim 1, comprising:

the pipe portion is formed by a 1 st plate material and a 2 nd plate material which are opposite to each other and have a plate shape,

the unjoined portion of the 1 st plate member and the 2 nd plate member constitutes the airbag for filling the gas,

the joint portion between the 1 st plate member and the 2 nd plate member constitutes a connecting member for connecting the plurality of airbags,

the connecting member is interposed between the respective airbags.

11. The buoy of claim 1, comprising:

an air injection passage for injecting air is provided at an end of the air bag,

the bent line is formed opposite to the air injection passage.

12. The buoy of claim 1, comprising:

the outer side surface of the envelope portion, which is in contact with the inner side surface of the envelope portion, is bonded to the inner side surface of the envelope portion by thermal fusion or an adhesive.

13. The buoy of claim 1, comprising:

a reinforcing material in a rod shape accommodated in the central hole,

the pipe portion is supported by the reinforcing member.

14. The buoy of claim 13, comprising:

the reinforcing material is formed in a tubular shape having a central hole.