JP2012166923A - Sheave block of cargo handling device for ship and cargo handling device for ship using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a sheave block that prevents a wire from abutting on one side of the sheave block and is free from the uneven wear of the sheave block in a derrick device and the like of a marine cargo handling device.SOLUTION: The sheave block 3 of the cargo handling device for a ship includes a wire guide ring 1 which is concentric therewith and rotatably supported in one or two directions of an outer circumference via a ring support member 2 having a predetermined length, and which a moving wire penetrates.

Description

  The present invention relates to a sheave block for a ship handling apparatus and a ship handling apparatus that uses the sheave block.

  2. Description of the Related Art Conventionally, as a sheave block of a marine cargo handling device and a marine cargo handling device that uses the sheave block, for example, those disclosed in Japanese Utility Model Publication No. 51-133993 are known. The one disclosed in Japanese Utility Model Laid-Open No. 51-133993 is related to the device name “marine cargo handling device”, and for the purpose of “providing a safe marine single derrick device with good boom stability”. (Refer to page 3, lines 14 to 16 of the correction specification.) "The two suspension ropes are wound and fixed at opposite ends on the drum of a winch having two drums of the same diameter, and equidistant from the derrick boom base support point. Between the pulley device fixed at three points on the top of the symmetric mast and the mast upper portion of the derrick boom base and the pulley device fixed near the tip of the derrick boom, and the opposite side fixed to the guy winch By supporting the rideric boom by winding the ends of the suspension rope around the drums of a topping winch having two drums of the same diameter in the same direction. (Refer to the claims of the utility model registration in the specification)) “The cargo handling efficiency is increased, and the guy winch G is compact and inexpensive. Also, the tension applied to the pulleys 110 and 111 with the mast 103 is suspended by the conventional two-point suspension. The swinging moment is much smaller than that of the cargo handling system, and the guy post is not needed and it is cheaper. Also, the derrick boom of the two-point hanging cargo handling system has the stability and is very safe. (See page 7, line 10 to line 20).

  FIG. 5 is an “abbreviated perspective view of the inventive cargo handling apparatus” disclosed as FIG. 1 of the above-mentioned Japanese Utility Model Laid-Open No. 51-133993. In FIG. 5, reference numeral 101 denotes a hull, 102 denotes a winch platform, 103 denotes a mast, 104 denotes a derrick boom, 104 e denotes the derrick boom tip, 104 g denotes the base, 105, 106, 107, 108. , Pulley 109 is a sheave (hereinafter also referred to as “sheave block”), 110 and 111 are pulleys, 112 to 115 are central pulleys, 116 and 117 are suspension ropes, C is a cargo winch, G is a guy winch, G1 and G2 are the same drums, T is a topping winch, and T1 and T2 are the same drums (in the above-mentioned Japanese Utility Model Publication No. 51-133993, they are denoted by reference numerals 1 to 17). However, for convenience, the reference numerals 101 to 117 are used.)

  In a derrick device or the like as this type of marine cargo handling device, as is clear in the above example, a moving wire ("hanging cords 116, 117" in the above example) is used to reduce loss due to friction. The sheave 109 is widely used as a device for changing the extending direction.

  FIG. 6 is a diagram showing an outline when the extending direction of the conventional moving wires 116 and 117 is required not only for two-dimensional conversion but also for three-dimensional conversion. In FIG. The same mast, 116 is a moving wire, 120 is a sheave block, 121 is a swivel, and 122 is a stopper. As shown in FIG. 6, when the extending direction of the moving wire 116 requires not only two-dimensional conversion but also three-dimensional conversion, the swivel 121 and the stopper 122 are provided to A block 120 fixed to a derrick device and provided with a function capable of following the operation is generally used. However, when a large sheave block 120 as shown in FIG. 6 is used, a phenomenon occurs in which the moving wire 116 hangs down due to the weight of the moving wire 116 and the sheave block 120. Deviation occurs in the axis of the sheave block 120.

  FIG. 7 is a view showing an outline in which the axis of the moving wire 116 and the axis of the sheave block 120 in the conventional apparatus are displaced. In FIG. 7, 116 is a moving wire, 120 is a sheave block, and Z is This is the sheave shaft of the sheave block 120. When the wire 116 hangs under its own weight, the moving wire 116 and the sheave shaft Z are misaligned, so that the wire 116 comes into contact with the ear portion of the sheave block 120. Therefore, there is a problem that uneven wear of the sheave block 120 itself occurs. The worn sheave block 120 needs to be replaced, but there is a problem that a large amount of labor is required for the work.

Japanese Utility Model Publication No. 51-133993

  In order to solve the above problems, an object of the present invention is to provide a sheave block structure in which a wire does not come into contact with the sheave block and wear unevenly in a derrick device of a marine cargo handling apparatus.

In order to solve the above-mentioned problems, the invention according to claim 1 of the present invention is supported in a sheave block of a marine cargo handling device so as to be coaxially rotatable in one or two directions of an outer periphery via a ring support material having a predetermined length. It has a wire guide ring through which a moving wire penetrates.
The invention according to claim 2 of the present application is the sheave block of the marine cargo handling device according to claim 1, wherein the wire guide ring is a hollow disk-shaped ring member provided at the tip of the ring support member, A hollow disk-shaped bush material having a fitting groove provided in the inner peripheral portion of the wire guide ring 1 and through which the moving wire passes is fitted into the fitting groove.
Furthermore, the invention according to claim 3 of the present application is the sheave block of the marine cargo handling device according to claim 2, wherein the bushing material has a missing portion in which a part of the disk is missing with a predetermined width in the radial direction. It is characterized by a letter-shaped disk shape.
And, the invention according to claim 4 of the present application. In the sheave block of the marine cargo handling apparatus according to claim 2 or claim 3, the bush material is made of resin.
Further, the invention according to claim 5 of the present invention has a wire guide ring through which a moving wire that is rotatably supported coaxially via a ring support material having a predetermined length in one or two directions on the outer periphery of the ship cargo handling device. The sheave block is arranged in the upper part of the mast of the apparatus.
Furthermore, the invention according to claim 6 of the present application is the marine cargo handling apparatus according to claim 5, wherein the wire guide ring is a hollow disk-shaped ring member provided at a tip of the ring support member, and the wire guide ring A sheave block having a wire guide ring in which a hollow disc-shaped bush material through which the moving wire passes is provided, and having a fitting groove provided in the inner peripheral portion of the mast upper portion of the apparatus It is characterized by being arranged.
The invention according to claim 7 of the present application is the marine cargo handling apparatus according to claim 6, wherein the bush member has a C-shaped disk having a missing part in which a part of the disk is missing with a predetermined width in the radial direction. It is a shape.
The invention according to claim 8 of the present invention is characterized in that, in the marine cargo handling apparatus according to claim 6 or claim 7, the bush material is made of resin.

Since this invention is comprised as mentioned above, there exists an effect described below.
(1) The wire shaft and the sheave shaft can always be corrected in the same direction, and the uneven wear of the sheave block can be prevented.
(2) Moreover, it becomes possible to protect a wire by providing a bush in a guide ring.
(3) Furthermore, by using a C-shaped bush, it becomes possible to easily replace the bushing, which is a consumable, and it is only necessary to replace the bush compared to the sheave block replacement, thus reducing the running cost. Have

Schematic of a sheave block used for a marine cargo handling apparatus according to Embodiment 1 of the present application. The figure (A-A SECTION) which shows the outline of the wire guide ring used for the marine cargo handling apparatus which concerns on this application Example 1 The figure which shows the outline of the bush material 4 invaginated in the wire guide ring 1 used for the marine cargo handling apparatus which concerns on the present Example 1 (BB SECTION) The figure which shows the outline of the ship cargo handling equipment equipped with the sheave block 3 which provided the said wire guide ring 1 which concerns on this-application Example 2. FIG. “Abbreviated perspective view of the inventive cargo handling device” disclosed as FIG. 1 of Japanese Utility Model Publication No. 51-133993 The figure which shows the outline when the extending | stretching direction of the said moving wires 116 and 117 of the past requires not only two-dimensional conversion but three-dimensional conversion It is a figure which shows the outline which a shift | offset | difference arises in the axis line of the said moving wire 116 and the axis line of the said sheave block 120 in a conventional apparatus.

  The sheave block of a marine cargo handling apparatus according to the first embodiment, which is an embodiment of the sheave block of the marine cargo handling apparatus as the best mode for carrying out the sheave block of the marine cargo handling apparatus and the marine cargo handling apparatus that uses the same. The block will be described in detail with reference to the drawings.

  FIG. 1 and FIG. 2 are views showing Example 1 of a sheave block having a wire guide ring, which is an example of a mode for carrying out a marine cargo handling apparatus according to the present invention, of which FIG. It is the schematic of the sheave block used for the marine cargo handling apparatus which concerns on Example 1, FIG. 2: is a figure which shows the outline of the wire guide ring used for the marine cargo handling apparatus which concerns on the present Example 1, A shown in FIG. FIG. They are arranged in place of the pulleys 110 and 111 arranged on the masts 103 and 103 of the conventional marine cargo handling apparatus (see FIG. 5).

1 and 2, reference numeral 1 is a wire guide ring, 2 is a ring support material, 3 is a sheave block provided with the wire guide ring 1, 4 is a bush material, and 5 is a bush material 4. A hollow hole opened in the center, 6 is a missing part in which a part of the disc-shaped bush material 4 is missing, and 116 is a moving wire.
As is apparent from FIG. 1, the wire guide ring 1 of the sheave block 3 according to the first embodiment is rotatably supported via the ring support member 2 coaxially with the sheave block 3 at a predetermined distance. Yes.

  That is, the sheave block 3 according to the first embodiment is supported so as to be rotatable coaxially with the sheave block 3 via the ring support member 2 having a predetermined length in one direction (or two directions) of the outer periphery thereof. The wire guide ring 1 is a hollow disk-shaped ring member provided at the tip of the ring support member 2, and the moving wire 116 moves through the hollow disk-shaped ring member. Further, the disc-shaped bush material 4 is fitted into the inner peripheral portion of the wire guide ring 1. The bush material 4 has a disk shape having a hollow hole 5 in the center of the inside, and the moving wire 116 passes through the hollow hole 5.

Note that the length of the ring support member 2 used in the marine cargo handling apparatus according to the first embodiment is about the radius of the sheave block 3, and the diameter of the sheave block 3 is the length of the moving member. The diameter of the wire-116 is about 20 times, and the ring diameter of the wire guide ring 1 is about 3 times the diameter of the moving wire-116.
Further, as shown in FIG. 2, the bush member 4 has a hollow hole 5 at the inner center, and a so-called C-shape having a missing part 6 in which a part of the disk is missing with a predetermined width in the radial direction. It is a disk shape. The C-type bushing material 4 having the missing part 6 in which a part of the disk is missing with a predetermined width in the radial direction can be easily exchanged by reducing the outer shape by compressing the circumferential side of the missing part 6. It is to do.

  FIG. 3 is a view showing an outline of the bushing material 4 inserted into the wire guide ring 1 used in the marine cargo handling apparatus according to the first embodiment, and is a view taken along the line BB in FIG. In FIG. 3, 1 is the wire guide ring, 4 is the bush material, 7 is an insertion groove provided on the inner periphery of the wire guide ring 1, and 116 is a moving wire. As shown in FIG. 3, the bush material 4 is fitted into a fitting groove 7 provided inside the wire guide ring 1.

  As described above, the bush material 4 is made of resin in order to protect the moving wire 116. That is, the moving wire 116 is made of a soft resin so as to avoid wear of the moving wire 116 when moving in the hollow hole 5, and when the moving wire 116 moves, the bush The material 4 is worn, and the worn bush material 4 is exchanged.

Further, the C-type bushing material 4 is simply provided with the hollow hole 5, and it is necessary to detach the moving wire 116 and replace the moving wire 116 after passing through the bushing material 4 at the time of replacement. Therefore, it is possible to easily replace the moving wire 116 without requiring the work of hanging and moving the moving wire 116.
With such a configuration, when the moving wire 116 is pulled, the wire guide ring 1 is always oriented in the extending direction, and the moving wire 116 hangs down due to the weight of the moving wire 116 and the sheave block 120. However, the axis of the moving wire 116 and the sheave block 3 is not shifted, and the moving wire 116 comes into contact with the ear portion of the sheave block 3 and the sheave block 3 itself wears unevenly. Can be prevented.

  In addition, since the sheave block 3 having the wire guide ring 1 used in the marine cargo handling apparatus according to the first embodiment is used, wear occurs mainly on the bush material 4, and in that case, the bush It is only necessary to replace the material 4, and also when replacing the bush material 4, by making a so-called C-type bush material 4 having a missing portion 6 in which a part of the disk of the bush material 4 is missing, Replacement work can be done easily.

  That is, since it is a marine cargo handling apparatus having the wire guide ring 1 according to the first embodiment, the wire shaft and the sheave shaft can always be corrected in the same direction, and uneven wear of the sheave block can be prevented. . Further, by providing the bushing material 4 in the wire guide ring 1, the wear of the moving wire 116 is reduced, the durability of the moving wire 116 is increased correspondingly, and the bushing material 4 is made of a hollow disk. The C-type bushing material 4 that is partially missing makes it possible to easily replace the consumable bushing, and replace the bushing material 4 compared to the case where sheave block replacement has been required so far. Therefore, the amount of work and the running cost are reduced.

Next, a marine cargo handling apparatus according to Example 2 using the wire guide ring 1 according to Example 1 will be described with reference to the drawings.
FIG. 4 is a view schematically showing a marine cargo handling apparatus equipped with a sheave block 3 provided with the wire guide ring 1 according to the second embodiment.
That is, among the ship loading / unloading devices shown in FIG. 1 of the Japanese Utility Model Laid-Open No. 51-133993, which is disclosed as “abbreviated perspective view of the inventive loading / unloading device”, the wire guide ring 1 Equipped with a sheave block 3 provided with In FIG. 4, reference numerals 3 and 3 are sheave blocks provided with the wire guide ring 1, 103 and 103 are masts, 104 is a derrick boom, 105 and 106 are pulleys, 116 and 117 are moving wires, and C is Cargo winch, G indicates guy winch.

  As is clear from FIG. 4, according to the marine cargo handling apparatus according to the second embodiment, the moving wires 116 and 117 are always oriented in the extending direction, and the wire axis and the sheave axis are always in the same direction. The cargo handling operation is performed smoothly and the uneven wear of the sheave block is reduced. In particular, when the cargo handling device is enlarged and large-diameter moving wires 116 and 117 are used, the moving wires 116 and 117 often hang down due to the weight of the moving wires 116 and 117 and the sheave block 3. Even if it exists, since the axis line of the moving wires 116 and 117 and the axis line of the sheave block 3 do not deviate, the work efficiency of the cargo handling on this surface is improved, and the uneven wear of the sheave block 3 is less likely to occur. Therefore, it can be set as the cargo handling apparatus excellent in maintenance, such as replacement | exchange of the sheave block 3. FIG.

Further, by providing the bushing material 4 in the wire guide ring 1, the wear of the moving wire 116 is reduced, the durability of the moving wire 116 is increased correspondingly, and the maintenance performance is also improved in this respect.
Then, by replacing the bushing material 4 with the C-type bushing material 4 in which a part of the hollow disk is missing, it is possible to easily replace the consumable bushing material without detaching the moving wires 116 and 117. In addition, since only the bushing 4 needs to be replaced, the amount of work and the running cost can be reduced as compared with the case where the sheave block replacement has been required.

  The present invention is used for a sheave block of a marine cargo handling apparatus and a marine cargo handling apparatus that uses the sheave block.

DESCRIPTION OF SYMBOLS 1 Wire guide ring 2 Ring support material 3 Sheave block 4 Bushing material 5 Hollow hole 6 Missing part 7 Insertion groove 101 Hull 102 Winch platform 103, 103 Mast 104 Derrick boom 104e Derrick boom tip part 104g Derrick boom base part 105, 106, 107, 108 pulley 109, 120 sheave (sheave block)
110, 111 pulleys 112-115 central pulleys 116, 117 suspension rope (moving wire)
121 Swivel 122 Stopper C Cargo winch G Guy winch G1, G2 Guy winch drum T Topping winch T1, T2 Topping winch drum Z Sheave shaft

Claims (8)

   A sheave block for a marine cargo handling device, comprising a wire guide ring through which a moving wire supported rotatably coaxially via a ring support material having a predetermined length in one or two directions on the outer periphery.   The wire guide ring comprises a hollow disk-shaped ring member provided at the tip of the ring support material, has a fitting groove provided in an inner peripheral portion of the wire guide ring 1, and is a hollow disk through which the moving wire passes. The sheave block of a marine cargo handling device according to claim 1, wherein a bush-like bush material is inserted into the insertion groove.   The sheave block of a marine cargo handling device according to claim 2, wherein the bush material has a C-shaped disk shape having a missing part in which a part of the disk is missing with a predetermined width in the radial direction.   4. The sheave block for a marine cargo handling apparatus according to claim 2, wherein the bush material is made of resin.   A sheave block having a wire guide ring through which a moving wire that is rotatably supported coaxially via a ring support material having a predetermined length in one or two directions on the outer periphery is disposed on the mast of the apparatus. Ship handling equipment characterized by that.   The wire guide ring comprises a hollow disk-shaped ring member provided at the tip of the ring support material, has a fitting groove provided in an inner peripheral portion of the wire guide ring 1, and is a hollow disk through which the moving wire passes. 6. A marine cargo handling device according to claim 5, wherein a sheave block having a wire guide ring in which a bush-like bush material is fitted in the fitting groove is disposed on the mast of the device.   The ship handling apparatus according to claim 6, wherein the bush member has a C-shaped disk shape having a missing part in which a part of the disk is missing with a predetermined width in the radial direction. The marine cargo handling device according to claim 6 or 7, wherein the bush material is made of resin.

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