JP6529359B2 - Underwater work hanger - Google Patents

Description

  The present invention relates to a suspension for underwater work.

  BACKGROUND ART Conventionally, in order to smoothly install a structure in the water and to create a bottom of the water, a water operation by a diver has been performed. Underwater work by divers is particularly important in the case of a coating work, which is a type of underflooring work. For example, as shown in FIG. 7, the floor leveling process is a process of piling rubble 16 on the bottom floor to form a foundation mound and laying a concrete block 17 (heavy material) such as a rooting block or a covering block on the top Have.

  As shown in FIG. 7, a hanger 15 having a concrete block 17 attached thereto is attached to the tip of a crane wire 13 suspended in water from a winch 12 of a crane 11 mounted on a work ship 10 via a crane hook 14. It is done. By raising and lowering the crane wire 13 by the winch 12, the above-described concrete block 17 is placed on a predetermined water bottom.

  After landing, the diver S performs a ball removing operation of removing the lifting gear 15 from the concrete block 17. Moreover, when moving the concrete block 17 once placed on the bottom of the water for leveling, a sling operation of connecting the hanger 15 and the concrete block 17 is performed.

  In the above-described ball removing operation and the sagging operation, when the work ship 10 sways in the vertical and horizontal directions due to waves, the sway of the work ship 10 is transmitted to the wire of the suspension 15 and a connection fitting attached to the suspension or concrete block There is a risk that the diver's finger may get caught in the

  An object of the present invention is to provide a suspension for underwater work that safely performs slinging operation and ball removal operation in underwater operation.

The above task is
An underwater working hanger connected to a support wire dropped from the ship, comprising:
Said support wire and a first sloping wire always connected during underwater operation ;
A buoyant floating body disposed on the first hook wire;
A second hooking wire disposed at a lower position of the floating body, the hooking wire having a connection means for detachably hanging a heavy load;
A cone disposed between the first pooling wire and the second pooling wire;
Have,
The underwater weight of the weight is solved by the underwater working hanger characterized in that the buoyancy of the floating body is larger .

  According to the present invention, it is possible to provide a suspension for underwater work that safely performs sling work and ball removal work in the underwater work.

It is a figure showing composition of a hanger concerning a 1st embodiment. AC is explanatory drawing which shows an example of the installation operation of a heavy load using the hanger of FIG. A and B are figures which show the modification 1 and 2 of the hanger which concerns on 1st Embodiment. It is a figure which shows the structure of the hanger which concerns on 2nd Embodiment. AC is explanatory drawing which shows an example of the installation operation of a heavy load using the hanger of FIG. A and B are figures which show the modification 1 and 2 of the hanger which concerns on 2nd Embodiment. It is a figure explaining the conventional hanger.

  Hereinafter, the embodiment of the suspension tool for underwater work concerning the present invention is described. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and the redundant description thereof is appropriately simplified or omitted. The drawings are not intended to indicate relative ratios between members or parts. Accordingly, specific dimensions can be determined by one of ordinary skill in the art in light of the following non-limiting embodiments. Moreover, the connection structure demonstrated below is an example, and the general connection method normally implemented can be applied suitably.

First Embodiment
FIG. 1 is a view showing the structure of a hanger 1 according to the first embodiment.

  The hanger 1 of this embodiment is, as described with reference to FIG. 7, a crane hook 14 at the tip of a crane wire 13 (corresponding to a support wire) suspended in water from the winch 12 of the crane 11 mounted on the work ship 10. It is attached via.

The structure above the lifting gear 1 is generally used in the case where a heavy load can be vertically lifted and lowered from the ship to be fixed to the water bottom. Therefore, in the following description, the description of the configuration above the hanger 1 is omitted.
The hanger 1 of the present embodiment shown in FIG. 1 is a so-called single suspension type. The hanging tool 1 includes a first hooking wire 2, a floating body 3 having a buoyancy, a weight 5 for suppressing the buoyancy of the floating body 3, and a connecting means 8 for suspending a heavy load 9 detachably at the tip. It has two ball hook wires 7.

  An upper end portion of the first blind wire 2 is formed to be connectable to the crane hook 14, and a lower end portion is formed with a ring-shaped eye portion 2a which can be connected to other members. The floating body 3 is disposed at a lower position (arrow Y2 direction) of the first hooking wire 2.

  The floating body 3 of the illustrated example is a float material which is filled with a gas inside to obtain buoyancy. The floating body 3 of the present embodiment has a through hole 3a in the middle shaft portion. By having the through holes 3a, the first blind wire 2 can be passed. Then, the floating body 3 can arbitrarily determine the installation position within the range of the first hook wire 2.

  When the installation position of the floating body 3 is determined, a fixing member such as a wire clip 2b is attached to the upper position and the lower position of the floating body 3 in the first hooking wire 2, and the position of the floating body 3 is fixed.

  The floating body 3 of the present embodiment has a means for adjusting the buoyancy, although the drawing is omitted. The means for adjusting the buoyancy means, for example, inject an appropriate amount of breath of the diver from the inlet provided to the floating body 3 or apply an external force to the floating body 3 to extract gas from the inlet to adjust the buoyancy. There is a way. Moreover, as a method of injecting a gas, an injection hose may be attached to the floating body 3, a diver's air hose and an injection hose may be connected, and a gas may be injected from the air hose.

  The weight 5 has a weight greater than the weight of the hanger 1 and the buoyancy of the floating body 3. The weight 5 may be, for example, a concrete block, a metal block or the like. The weight 5 is preferably a rectangular solid. As described later, when the weight 9 is placed on the bottom of the water by the hanger 1, the weight 5 is also placed on the bottom of the water or the top of the weight 9. At this time, if the weight 5 is a rectangular solid, it can be stably mounted on the mounting surface. Ring-shaped suspension rings 5a and 5b are formed at the upper and lower portions of the weight 5, respectively.

  The weight 5 of the above configuration is disposed below the floating body 3. Specifically, by connecting the eye portion 2 a of the first blind wire 2 and the suspension ring 5 a on the upper portion of the weight 5 by the shackle 4, the weight 5 can be attached at a lower position than the floating body 3.

  The second hooking wire 7 is connected to the lower position (lower end portion) of the weight 5 having the above-described configuration. Specifically, by connecting the suspension ring 5b at the lower part of the weight 5 and the eye part 7a provided at the upper end of the second hooking wire 7 by the shackle 6, the second ball hooking at the lower position of the weight 5 is performed. The wire 7 can be arranged. The second blind wire 7 preferably has a length equal to or greater than the diameter of the weight 9.

  Incidentally, the first hooking wire 2 and the second hooking wire 7 are attached such that the axis J (center axis) coincides with each other. The first hook wire 2 in the illustrated example is one, and the second hook wire 7 is also one. By attaching both the wires 2 and 7 via the weight 5 so that the axis lines J coincide with each other, each part of the lifting gear 1 is disposed from the wire crane 13 on one axis line J (colinear). , It can contribute to suspending the weight 9 described later without blurring.

  A shackle 8 (corresponding to a connecting means) is attached to the lower end portion of the second hooking wire 7 to smooth the hooking and ball removing operation. The shackle 8 is connected to an eye 7 b formed at the lower end of the second blind wire 7.

  In addition, the second hooking wire 7 is connected via the shackle 8 to a ring portion 9 a provided on the heavy load 9. In addition, a hook material may be connected to the shackle 8 to connect the hook material and the suspension ring 9a. In the present embodiment, the heavy object is a covering block which is laid for leveling on rubble (hereinafter referred to as covering block 9). Of course, it may be rubble etc.

  The ring portion 9a of the covering block 9 is provided at the barycentric position (approximately central position) of the upper surface. Therefore, since the hanger 1 can suspend the covering block 9 at the center-of-gravity position, it can contribute to a stable suspension or lifting operation.

  As described above, the hanger 1 of the present embodiment is configured such that the weight 5 and the second blind wire 7 are disposed at a lower position than the floating body 3. The above configuration prevents danger such as the diver's finger being pinched even if the work boat 10 swings up and down and left and right due to waves when throwing a ball on the covering block 9 that is bottomed in the water and removing balls. it can. Hereinafter, this point will be described based on the work procedure of FIG.

  FIGS. 2A to 2C are explanatory views showing an example of a procedure of installation work of the covering block 9 using the hanger 1 of FIG. FIG. 2 (A) shows the state of the hanger 1 when the covering block 9 is suspended. FIG. 2 (B) shows the state of the hanger 1 when the covering block 9 is placed on the bottom of the water. FIG.2 (C) has shown the state of the hanger 1 after deburring the covering block 9. As shown in FIG.

  In FIG. 2 (A), the covering block 9 is suspended by the hanger 1. At this time, as described above, since each part of the hanger 1 and the covering block 9 are disposed on the axis line J from the first hooking wire 2, the covering block 9 can be stably suspended.

Then, as shown in FIG. 2 (B), when the covering block 9 is bottomed on the water bottom, the weight 5 is then bottomed on the upper surface of the covering block 9. Of course, the weight 5 may be grounded on the water bottom. At this time, the weight 5 is detached from the position of the ring portion 9 a of the covering block 9 so as to be grounded.
The floating body 3 is suppressed from being lifted upward by the weight 5 that is placed on the bottom, and floats at a certain height position in water.

  After landing of the weight 5, a further unwinding of the crane wire 13 takes place in such a way that a deflection T1 shown in dotted lines is formed in the first blind wire 2. The deflection T1 can be formed by the floating body 3 floating at the above-described constant height position. The deflection T1 is formed with the upper wire clip 2b attached to the first blind wire 2 as a fulcrum.

  Since the weight 5 on the bottom is a rectangular solid, the mounting state is stable. Since the second blind wire 7 connected to the weight 5 has a length equal to or greater than at least the diameter of the covering block 9 as described above, the second blind wire 7 is bent at the time of landing T2. Will occur. The deflection T2 is a movable area when the diver removes the second blind wire 7 (the shackle 8) from the covering block 9, thereby improving the working efficiency.

  In addition, even if the work boat 10 swings up and down and to the left and right, the deflection T1 of the first hooking wire 2 formed by the floating body 3 floating at a fixed height position absorbs the swing, so the floating body Lower than 3 is not affected by the swing. Therefore, when the diver removes the second blind wire 7 from the covering block 9, the second blind wire 7 has no influence on the swing even if the work boat 10 pivots up and down and to the left and right. There is no risk of holding a finger on the ring portion 9a or the peripheral members, and a safe operation can be performed.

  When the above-mentioned ball removing operation is finished, the lifting gear 1 can be easily removed from the water by rolling up the crane wire 13 with the winch 12 as shown in FIG. 2 (C).

  In FIG. 2, the covering block 9 is placed at a predetermined position on the bottom of the water, and the task of removing the ball from the lifting gear 1 has been described. However, the lifting gear 1 of the present embodiment is The repositioning to an appropriate position is possible only by performing the reverse of the above description. Therefore, even when the lifting tool 1 is hooked, since it can be performed in the state shown in FIG. 2 (B), not only the working efficiency of the hooking work is good but also the task can be performed safely by preventing pinching of a finger. .

(Modification 1)
Next, a first modification of the first embodiment will be described from FIG. 3A. In 1st Embodiment, although the case where the floating body 3 has the through-hole 3a was made into an example and demonstrated, when it does not have the through-hole 3a, it can implement with the same technical idea. Only the differences will be described below.

  The hanger 1 'of the modified example 1 is a so-called one-piece type like the hanger of the first embodiment as shown in FIG. 3A.

The floating body 3 is the same in that it is disposed at the lower position of the first hook wire 2, but differs in that it is not attached to the line of the first hook wire 2.
The floating body 3 is provided with a ring-shaped eye portion 3b at its lower end portion, and is configured to be connected by a shackle 4 together with the eye portion 2a of the first blind wire 2 and the ring portion 5a of the weight 5 . Even in this case, the weight 5 and the second blind wire 7 can be disposed at a lower position than the floating body 3, and the same effect as in FIG. 1 can be obtained.

(Modification 2)
Next, a second modification of the first embodiment will be described from FIG. 3B.
The hanger 1 ′ ′ according to the second modification is also based on the technical idea substantially the same as that of the first embodiment, and the differences from the first embodiment will be described below.

  The hanger 1 ′ ′ according to the second modification is a so-called single suspension type like the hanger according to the first embodiment. However, the point which does not have the weight 5 which suppresses the buoyancy of the floating body 3 is different. In the second modification, in order to suppress the buoyancy of the floating body 3, the weight of the second hooking wire 7 ′ is made larger than the buoyancy of the floating body 3.

  As the means, it is conceivable to use a heavy second slug wire 7 '. Then, when the covering block 9 is bottomed, the second blind wire 7 'which is heavy can reliably suppress the floating of the floating body 3 and can form an appropriate deflection with the covering block 9. . Therefore, the same effect as described in the first embodiment can be obtained in the second modification.

Second Embodiment
Next, a hanger 100 according to a second embodiment of the present invention will be described based on FIGS. 4 and 5. The second embodiment is based on substantially the same technical concept as the first embodiment, and the following description will be focused on differences from the first embodiment.
Briefly, the hanger 100 of the second embodiment is different from the hanger 1 of the first embodiment in that the hanger 100 of the second embodiment is of a multiple suspension type.

  The hanger 100 basically includes a first hooking wire 20 connected to the crane wire 13 via a crane hook 14, a floating body 30 having buoyancy, a weight 50 for suppressing the buoyancy of the floating body 30, and a tip portion And a second hooking wire 70 having a connecting means 80 (corresponding to a shackle 80) for hanging the heavy load 90 detachably.

  About the 1st hook wire 20 and the floating body 30, since it is the same as that of 1st Embodiment, description is abbreviate | omitted.

  The attachment configuration of the weight 50 and the second hooking wire 70 disposed at the lower position of the floating body 30 will be specifically described. FIG. 4A is a view showing an example of the entire configuration of the hanger 100 according to the second embodiment. FIG. 4B is a partially enlarged view showing the connection configuration of the weight 50 and the second blind wire 70. FIG. 4C is a partially enlarged view showing the connection configuration of the second hooking wire 70 and the heavy load 90. In any of FIG. 4 (B) and FIG. 4 (C), the one 2nd hooking wire 70 was shown on the relationship of description.

A ring-shaped connecting annular member 41 connecting the weight 50 and the second blind wire 70 is attached to the lower end (arrow Y 2 side) of the first blind wire 20. Specifically, a ring-shaped eye portion 20a formed at the tip of the first blind wire 20 and a connecting annular member 41 are connected to the shackle by 40.
A weight 50 and four second blind wires 70 are connected to the connecting annular member 41. The weight 50 is disposed at the lower position of the floating body 30 by connecting the suspension ring 50a provided on the upper surface of the weight 50 and the connecting annular member 41 by the shackle 61 as shown in FIG. 4B. .

  Further, the second blind wire 70 is located below the floating body 30 by connecting the ring-shaped eye portion 70 a provided at the upper end of the second blind wire 70 and the connecting annular member 41 by the shackle 62. Be placed. In the present embodiment, four second blind wires 70 are attached to the connecting annular member 41 in the same manner.

  The feature is that the length L1 of the second hooking wire 70 of the present embodiment is longer than the hanging length L2 of the weight 50. Although this will be described in detail later, this is to allow the second blind wire 70 to form a deflection when the weight 90 lands on the water bottom and subsequently the weight 50 also lands. By this deflection, the ball removal or banging operation of the second hooking wire 70 can be smoothly performed. Moreover, in the hanger 100 of this embodiment, the weight 50 may be separately connected to the connection annular member 41 by a suspension wire. The height of the weight 50 and the floating body 30 can be appropriately obtained by the hanging wire. The space between the weight 50 and the floating body 30 is actually a working space for the diver when the weight 90 is bottomed, so it is important from the viewpoint of safety to take as wide a space as possible.

  Incidentally, “the hanging length L2 of the weight 50” refers to the height from the ring portion 50a of the weight 50 to the lower end of the weight 50 in the illustrated example. Moreover, in the case of a configuration in which a hanging wire is connected to the weight 50, the “hanging length L2 of the weight 50” refers to the height from the upper end of the hanging wire to the lower end of the weight 50. In short, the length L1 of the second hooking wire 70 may be longer than the position of the lower end when the weight 50 is suspended.

  The four second blind wires 70 are respectively connected to the ring portion 90 a of the weight 90. The connection configuration is the same as that of the first embodiment, but specifically, as shown in FIG. 4C, the eye portion 70 b provided at the lower end portion of the second blind wire 70 and the weight 90 It is the structure connected by the shackle 80 (equivalent to a connection means) with the provided suspension ring part 90a.

  In the hanger 100 of the present embodiment, four second bead wires 70 are connected to the four corners of the weight 90, and the weight 50 is on the axis of the first bead wire 20 and the center of gravity of the weight 90 It is intended to be placed on top. Therefore, the hanger 100 can stably lift or suspend the covering block 90 without blurring.

  As described above, also in the hanger 100 of this embodiment, the weight 50 and the second blind wire 70 are arranged at a lower position than the floating body 30. The above configuration prevents danger such as the diver's finger being pinched even if the work ship 10 shakes up and down and left and right due to waves when throwing a ball on the covering block 90 that is bottomed in the water and removing balls. it can. Hereinafter, this point will be described based on the work procedure of FIG.

  5 (A) to 5 (C) are explanatory views showing an example of a procedure of installation work of the covering block 90 using the hanger 100 of FIG. FIG. 5A shows the state of the hanger 100 when the covering block 90 is suspended. FIG. 5B shows the state of the hanger 100 when the covering block 90 is bottomed on the water bottom. FIG. 5C shows the state of the hanger 100 after the covering block 90 has been deballed.

  In FIG. 5A, the covering block 90 is suspended by the hanger 100. At this time, as described above, since each part of the hanger 100 and the covering block 90 are disposed on the axis line J2 from the first hook wire 20, the covering block 90 can be stably suspended.

  Then, as shown in FIG. 5B, when the covering block 90 is bottomed on the water bottom, the weight 50 is then bottomed on the upper surface of the covering block 90. Of course, the weight 50 may be grounded on the water bottom. At this time, the weight 50 is placed so as to be separated from the position of the ring portion 90a of the covering block.

  The floating body 30 is suppressed from rising upward by the weight 50 that is in the bottom, and floats at a certain height position in water. After the landing of the weight 50, the crane wire 13 is further unrolled so that a deflection T3 indicated by a dotted line is formed on the first blind wire 20. The deflection T3 can be formed by the floating body 30 floating at the above-described constant height position. The deflection T3 is formed with the upper wire clip 20b attached to the first blind wire 20 as a fulcrum.

  Since the weight 50 on the bottom is a rectangular solid, the mounting state is stable. Since the length L1 of the second blind wire 70 is longer than the hanging length L2 of the weight 50 as described above, a deflection T4 occurs in the second blind wire 70 at the time of landing. This deflection T4 is a movable area when the diver removes the second ball hook wire 70 (shackle 80) from the covering block 90, so that the working efficiency is good.

  Also, even if the work boat 10 swings up and down and left and right, the deflection T3 of the first hooking wire 20 formed by the floating body 30 floating at a fixed height position absorbs the above swing, so the floating body Lower than 30 is not affected by the swing. Therefore, when the submersible removes the second blind wire 70 from the covering block 90, the second blind wire 70 has no influence on the swing even if the work boat 10 pivots up and down, right and left. There is no risk of holding a finger on the ring portion 90a or the peripheral members, and a safe operation can be performed.

  When the above-mentioned ball removal operation is completed, the lifting gear 100 can be easily removed from the water by rolling up the crane wire 13 with the winch 12 as shown in FIG. 5 (C).

  In FIG. 5, the covering block 90 is placed at a predetermined position on the bottom of the water and the task of removing the balls from the lifting gear 100 is described. However, the lifting gear 100 of the present embodiment is The repositioning to an appropriate position is possible only by performing the reverse of the above description. Therefore, even when the lifting gear 100 is hooked, since it can be performed in the state shown in FIG. 5 (B), not only the operation efficiency of the hooking operation is good, but also the finger can be prevented from pinching to perform the operation safely. .

(Modification 1)
Next, a modification 1 of the second embodiment will be described from FIG. 6A. Although the case where the floating body 30 has the through hole 30a is described as an example in the second embodiment, the same technical idea can be applied even when the floating body 30 does not have the through hole 30a. Only the differences will be described below.

  Similar to the hanger of the second embodiment, the hanger 100 'of the modified example 1 is a so-called multiple hanger type as shown in FIG. 6A.

The floating body 30 is the same in that it is disposed below the first hook wire 20, but differs in that it is not attached to the line of the first hook wire 20.
The floating body 30 is provided with a ring-shaped eye portion 30b at its lower end portion, and is configured to be connected by a shackle 40 together with the eye portion 20a of the first blind wire 20 and the ring portion 50a of the weight 50 . Therefore, even in this case, the weight 50 and the second blind wire 70 can be disposed at a lower position than the floating body 30, and the same effect as in FIG. 4 can be obtained.

(Modification 2)
Next, a modification 2 of the second embodiment will be described from FIG. 6B.
The hanger 100 '' of the modification 2 is also based on the technical idea substantially the same as that of the second embodiment, and the differences from the second embodiment will be described below.

  Similar to the hanger of the second embodiment, the hanger 100 ′ ′ of the second modification is a so-called multiple hanger type.

  However, the point which does not have the weight 50 which suppresses the buoyancy of the floating body 30 is different. In the second modification, in order to suppress the buoyancy of the floating body 30, the weight of the second hook wire 70 'is made greater than the buoyancy of the floating body 30.

  As the means, it is conceivable to use a heavy second slug wire 70 '. Then, when the covering block 90 is bottomed, the heavy second blind wire 70 'reliably suppresses the floating of the floating body 30, so that an appropriate deflection with the covering block 90 can be formed. it can. Therefore, the same effects as described in the second embodiment can be obtained also in this embodiment.

  Although the preferred embodiments of the present invention have been described above in detail, the present invention is not limited to the specific embodiments described above, and various modifications may be made within the scope of the present invention as set forth in the appended claims. It is possible to change or change it.

1 (1, 1 ′ ′), 100 (100 ′, 100 ′ ′) Suspender 2, 20 First beading wire 3, 30 Floating body 3a, 30a Through hole 4, 6, 8, 40, 60, 80 Shackle 5 , 50 Weight body 5a, 5b, 50a, 50b Ring portion 7, 70 Second beading wire 9, 90 Weight (cover block)
9a, 90a Suspension ring portion 10 Work ship 11 Crane 12 Winch 13 Crane wire 14 Crane hook 15 Suspension bracket 16 Rubbing stone 17 Concrete block L1 Second sling wire length L2 Suspension length of cone

Claims (8)

An underwater working hanger connected to a support wire dropped from the ship, comprising:
Said support wire and a first sloping wire always connected during underwater operation ;
A buoyant floating body disposed on the first hook wire;
A second hooking wire disposed at a lower position of the floating body, the hooking wire having a connection means for detachably hanging a heavy load;
A cone disposed between the first pooling wire and the second pooling wire;
Have,
An underwater work hanger according to any one of the preceding claims, wherein the weight of the weight in water is greater than the buoyancy of the floating body . The length of the second slinging wire, hanger for underwater work according to claim 1, wherein a weight with a diameter of more than. Wherein the first rigging wire and the second rigging wire hanger for underwater work according to claim 1 or 2, characterized in that it is arranged on the same line. The weight and the plurality of second blind wires are attached to the first blind wire and / or a connecting annular member connected to the floating body,
The length of the second slinging wire, hanger for underwater work according to claim 1, wherein the longer than hanging length of the weight body. The floating body is
The underwater work hanger according to any one of claims 1 to 4, further comprising means for adjusting the buoyancy. The floating body is
The underwater work lifting gear according to any one of claims 1 to 5, characterized in that a through hole is provided in the middle shaft portion of the floating body. The suspension tool for underwater work according to any one of claims 1 to 6 , wherein the weight is a rectangular solid. An underwater working hanger connected to a support wire dropped from the ship, comprising:
A first hooking wire coupled with the support wire;
A buoyant floating body disposed on the first hook wire;
A second hooking wire disposed at a lower position of the floating body, the hooking wire having a connection means for detachably hanging a heavy load;
Have
The weight of the second slinging wire, hanger for be that water working wherein a heavier than the buoyancy of the floating body.

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