JP2012111303A - Buoy, its float, and method of manufacturing float - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a buoy capable of suppressing a float from being rotated by receiving fluctuation of waves.SOLUTION: The buoy for transmitting data of an underwater sensor includes: the float 1 formed to heat-weld the circumference of a plurality of float clothes 101A-101D; ropes 2a, 2b for withstand load; and an underwater part 4 hung on the float 1 through the ropes 2a, 2b for the withstand load to store the sensor. The warp of heat welding parts of the plurality of the float clothes 101A-101D of the float 1 is formed in a sense of mutually negating rotation of the float 1.

Description

  The present invention relates to a buoy, its float, and a method for manufacturing a float, and more particularly to a buoy for wirelessly transmitting data from a sensor suspended in water by buoyancy by the float, its float, and a method for manufacturing a float.

  FIG. 4 is a block diagram of an example of a buoy related to the present invention. Referring to FIG. 1A, an example of a buoy related to the present invention is a buoy that transmits data of a sensor (not shown) in water, and a float 1 formed by thermally welding the periphery of a plurality of float cloths 101. And an underwater portion 4 that is suspended by the float 1 and accommodates the sensor via the load-bearing rope 2, and includes a wireless device (not shown) and the underwater portion 4 that are accommodated in the float 1. The accommodated sensor is connected via the signal line 3.

  In the figure, the float 1 is composed of four float cloths 101A to 101D as an example. Next, the manufacturing method of the float 1 is demonstrated. FIG. 5 is a schematic view showing an example of a float manufacturing method.

  Referring to FIG. 5A, in the buoy in the related art, when manufacturing the float 1, four urethane float cloths 101A to 101D (101C and 101D are omitted for convenience) are welded to the mold 102. It is sandwiched between the machines 103, and the welding cloth (heat welding part) of the float cloths 101A to 101D is melted by heat and welded.

  At the time of this welding, as shown in FIG. 5B, the float cloth (101A and 101B as an example) after the welding has a bend in the pressing direction by the press of the welding machine 103.

  FIG. 6 is a schematic view showing an example of a form after pressing of the float related to the present invention. Referring to the figure, the four float cloths 101A to 101D are welded in the directions of A to D, B to A, C to B, and D to C, respectively, and warpage during welding is uniform in the example of the figure. It is counterclockwise.

  For this reason, as shown in FIG. 4 (a), when the float 1 is exposed to the swaying of the waves, the rotational force generated by the waves hitting the float 1 is caused by the welded portions of the four float cloths 101A to 101D. Since the warpage is always in a constant direction, it is always easy to rotate in one direction (clockwise in the example in the figure).

  When the float 1 is exposed to shaking and continues to rotate, the signal line 3 is entangled with the load-bearing cable 2 due to the inertia of the underwater portion 4 and the float 1 continues to rotate as shown in FIG. As a result, the extra length of the signal line 3 is eliminated, an unexpected rotational force is applied to the signal line 3, and the signal line 3 is easily broken.

  On the other hand, an invention of a sonobuoy stabilizing device is disclosed in which a housing (corresponding to the underwater portion 4 of the present invention), not a float, is exposed to wave fluctuations and prevented from rotating (see Patent Document 1). In the present invention, a pair of fins are attached to the upper end of the housing, and each fin is a short flat plate and is composed of a short leg and a long leg.

  As another related invention, a water surface unit having a variable-capacity sealed chamber made of a semi-rigid plastic cup having a corrugated side wall portion and a closed end portion is disclosed (see Patent Document 2).

  As another related invention, there is disclosed a float structure in which the outer periphery of two float sheets is welded to form a bag-like float body (see Patent Document 3).

  As another related invention, there is disclosed a buoy in which two air chambers and a cable placement portion are formed by welding the periphery and the longitudinal center of two PVC sheets (Patent Document). 4).

Japanese Patent Laid-Open No. 61-040597 Japanese Patent Laid-Open No. 04-224493 Japanese Patent Laid-Open No. 07-304487 Japanese Unexamined Patent Publication No. Sho 63-121418

  However, as described above, in the related invention, since the welding direction of the float cloth is all in one direction, the warping of the welding cloth is in one direction. Therefore, when the float is subjected to wave fluctuation, as shown in FIG. However, as shown in FIG. 4B, there is a problem that the signal line 3 is entangled with the load-bearing cable 2 as time elapses in one direction (clockwise in the example in the figure).

  On the other hand, since the invention disclosed in Patent Document 1 prevents the rotation of the housing and does not prevent the rotation of the float, the invention disclosed in Patent Document 1 cannot solve the problem of the present invention.

  In addition, the inventions disclosed in Patent Documents 2 to 4 simply display a bag-like float, and do not disclose a configuration for preventing the float from rotating. Accordingly, the problems of the present invention cannot be solved by the inventions disclosed in Patent Documents 2 to 4.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a buoy capable of suppressing the rotation of a float due to wave fluctuations, a float thereof, and a method of manufacturing the float.

  In order to solve the above problems, a buoy according to the present invention is a buoy for transmitting data of a sensor in water, and includes a float formed by heat-sealing a plurality of float cloths, a load-bearing cable, and the load-bearing cable. And an underwater portion that is suspended from the float via a heavy cable and accommodates the sensor, and the warp of the heat-welded portions of the float cloths of the float is formed in a direction that cancels the rotation of the float mutually. It is characterized by being.

  Further, the float according to the present invention is a float used for a buoy for transmitting underwater sensor data, and is formed by heat-sealing the periphery of a plurality of float cloths. The warpage is formed in a direction in which the rotations of the floats cancel each other.

  The float manufacturing method according to the present invention is a float manufacturing method used for a buoy for transmitting underwater sensor data, and the periphery of a plurality of float cloths is thermally welded, and the heat of the plurality of float cloths of the float is heated. The warp of the welded portion is formed in a direction that cancels the rotation of the float to each other.

  According to the present invention, it is possible to suppress the float from rotating due to wave fluctuations.

1 is a configuration diagram of a first embodiment of a buoy according to the present invention. FIG. It is a schematic diagram which shows an example of the manufacturing method of the float concerning this invention. It is a block diagram of 2nd Embodiment of this invention. It is a block diagram of an example of the buoy relevant to this invention. It is a schematic diagram which shows an example of the manufacturing method of a float. It is a schematic diagram which shows an example of the form after the press of the float relevant to this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram of a first embodiment of a buoy according to the present invention. In the figure, the same components as those in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted.

  Referring to FIG. 1 (a), a first embodiment of a buoy according to the present invention is a buoy that transmits data of sensors in water, and a float 1 formed by thermally welding the periphery of a plurality of float cloths 101. A load-bearing cable (for example, a compliant signal line built-in type) 2b, and an underwater portion 4 that is suspended from the float 1 via the load-bearing cable 2b and houses a sensor (not shown). A wireless device (not shown) housed in 1 and a sensor housed in the underwater part 4 are connected via a signal line 3.

  As an example, the float 1 is made airtight by welding four sheets (101A to 101D) of four urethane float cloths 101, and earns buoyancy by filling carbon dioxide or the like inside. The float 1 has a built-in wireless device (not shown). The wireless device receives data transmitted from various sonars (not shown) or a sensor such as a water temperature system stored in the underwater portion 4 and receives the received data. Send wirelessly.

  The load-carrying cable 2 b supports the underwater weight of the underwater part 4 with the buoyancy of the float 1. In addition, sensor data from the underwater portion 4 is transmitted to the float 1 via the signal line 3. Then, data is wirelessly transmitted from the wireless device inside the float 1.

  In FIG. 2A, the end of the load carrying cable 2b on the float 1 side is composed of a rubber compliant portion 5, and a mechanism for absorbing the vibration of the waves by the expansion and contraction of the rubber compliant portion 5 is provided. ing. Further, the signal unit 3 has a surplus length with respect to the compliant unit 5 and is configured so that no load is applied to the signal unit 3 even if the compliant unit 5 expands and contracts due to the shaking of the wave.

  Further, in FIG. 5B, the load cable 2a that can withstand the load even when subjected to the vibration of the wave is used, and in order to avoid the load on the signal line 3 due to the vibration of the wave, the signal line 3 has an extra length. Is taking.

  As described above, the configuration of the embodiment has been described in detail. However, the depth and temperature sensor stored in the underwater portion 4 or the sonar according to the configuration of the float 1, the load-carrying ropes 2a and 2b, and the underwater portion 4 in FIG. The mechanism of transmitting the data to the float 1 and transmitting the data wirelessly to the air is well known to those skilled in the art and is not directly related to the present invention, and therefore detailed description thereof is omitted.

  Next, a method for manufacturing a float according to the present invention will be described. FIG. 2 is a schematic view showing an example of a method for producing a float according to the present invention. Referring to the figure, the periphery of four float cloths 101A to 101D is welded to each other.

  Specific examples of the welding of the float cloth 101 are shown in FIGS. 1 (c) and 1 (d). That is, among the float cloths 101A to 101D, the surroundings of A and B, A and D, D and C, and C and B are thermally welded, whereby one float is manufactured (see FIG. 4D). . And when the circumference | surroundings of a float cloth are heat-welded, a heat-welded part will bend in a press direction (refer the figure (c)).

  However, in the present invention, welding is performed such that the direction of warping of the heat-welded portion is alternately changed as shown in FIG. That is, in the present invention, the warp of the heat-welded portions of the plurality of float cloths 101A to 101D of the float 1 is formed in a direction that cancels the rotation of the float 1 to each other. For this reason, the rotation of the float 1 due to the wave sway is neutralized, and the rotation of the float 1 is suppressed.

  As described above, according to the first embodiment of the present invention, the float cloth 101 is welded so that the warpage of the float cloth 101 is alternately opposed to 101A, 101B, 101C, 101D. The rotation of the float 1 due to the movement of the float is suppressed, whereby the rotation of the float 1 prevents the signal line 3 from being entangled with the load carrying cable 2, eliminating the extra length of the signal line 3 and preventing the signal line 3 from being disconnected. Is possible.

  Next, a second embodiment of the present invention will be described. FIG. 3 is a block diagram of the second embodiment of the present invention. Referring to the figure, the configuration of the float 11 is displayed. The basic configuration of the buoy is the same as that of the first embodiment, but in the second embodiment, the float cloth 101 is composed of two sheets (101A and 101B as an example). As shown in the figure, since the warp of the heat-welded portion by the float cloths 101A and 101B is not aligned in the same direction, the rotation of the float 11 can be suppressed as in the case shown in FIG.

  As described above, according to the second embodiment of the present invention, even when the number of the float cloths is two, the float cloth 101 is warped so that the warpage of welding of the float cloth 101 is alternately opposed at both ends of A and B. Since the 101 is welded, the rotation of the float 11 due to the swaying of the wave is suppressed. As a result, the rotation of the float 11 causes the signal line 3 to be entangled with the load-bearing cable 2, eliminating the extra length of the signal line 3 Can be prevented from breaking. In addition, the number of float cloths 101 can be reduced, thereby reducing costs.

1, 11 Float 2 Load carrying cable 3 Signal line 4 Underwater part 5 Compliant part 101 Float cloth

Claims (8)

A buoy that transmits underwater sensor data,
A float formed by thermally welding the periphery of a plurality of float cloths, a load-bearing rope, and an underwater portion suspended from the float via the load-bearing rope and housing the sensor,
The buoy characterized in that the warp of the heat-welded portions of the plurality of float cloths of the float is formed in a direction that mutually cancels the rotation of the float.   The buoy according to claim 1, wherein the float has two or four float cloths.   The buoy according to claim 1 or 2, wherein a radio is accommodated in the float, and the radio and the sensor are connected via a signal line.   The buoy according to any one of claims 1 to 3, wherein the float-side end portion of the load-bearing rope is formed of a rubber compliant portion. It is a float used for buoys that transmit underwater sensor data,
The periphery of multiple float cloths is formed by heat welding,
The float characterized in that the warp of the heat-welded portions of the plurality of float cloths of the float is formed in a direction that cancels the rotation of the float.   The float according to claim 5, wherein the float has two or four float cloths. A float manufacturing method used for buoys that transmit underwater sensor data,
A method for manufacturing a float, wherein the periphery of the plurality of float cloths is heat-welded, and warpage of the heat-welded portions of the plurality of float cloths of the float is formed in a direction that mutually cancels the rotation of the floats.   8. The method of manufacturing a float according to claim 7, wherein the float cloth is composed of two or four sheets.

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