JP3344038B2 - Hull vertical bone lifting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting device that travels on a vertical bone of a hull, and more particularly to a lifting device provided in a tank and used for inspecting the structure inside the tank.

[0002]

2. Description of the Related Art Ships such as large tankers, bulk carriers for bulk loading of ores and grains, etc. are provided with inner walls which extend vertically in the longitudinal direction. FIG. 9 shows a half of the cross section of the center part of the hull of the large tanker. Inner wall 8 is 4
And three cargo tanks 10a.
The ship side outer plate 1 and the inner wall 8 provided on the ship side constitute a ballast tank 10b. Vertical bones 3 are provided on the ship-side outer plate 1 and the inner wall 8 in the longitudinal direction of the ship to prevent the plates from bending. A flat 9 made of a horizontal partition plate is provided in the ballast tank 10b and used for inspection of the inside.

[0003] In recent years, damage in tanks has increased, and regulations have been established to strengthen inspections of tank internal structures, and it has become necessary to provide inspection devices not only for newly built ships but also for ships in service. Conventionally, the following method has been used to inspect the inside and the inner wall of the ship side outer plate constituting the tank. A RAFT system that fills the tank with water, floats an inflatable boat (RAFT), changes the water level and moves up and down to check. A fixed ladder method in which a fixed ladder is installed in the tank for inspection. A temporary scaffolding system that provides a temporary scaffold for inspection. A flat system in which flats (horizontal partitions shown in FIG. 9) are provided at a constant pitch in the left and right ballast tanks, and a permanent or temporary ladder is provided between the flats for inspection.

[0004]

The above inspection methods have the following problems. The RAFT method cannot be implemented when the ship is in a dog because there is no water. Inspection work is possible while staying at the shore or during the voyage, but cannot be performed unless the sea is quiet. Further, it is difficult to finely adjust the water level according to the inspection, and a detailed inspection cannot be performed. If the inspection requires repair, repair work is not possible.

In the fixed ladder method, a ladder must be provided so as to cover an inspection place, and equipment costs are increased. In addition, the inspection work is moved up and down by the ladder, which places a heavy burden on workers. In addition, we cannot inspect place without ladder. Temporary scaffolding is only possible in docks, not at sea. Also, the cost is high. The flat method is expensive because the flat part is provided as part of the hull structure. In addition, a ladder must be separately installed at the upper part of the flat, and the cost is large in the case of the permanent construction, and the burden on the worker is large in the case of the temporary construction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a hull vertical bone lifting device capable of moving an operator or an object to an inspection position in order to inspect an inside of a tank. With the goal.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is designed to run using the vertical bones of a hull, and is provided on a vertical bone provided on an inner surface or an inner wall of a ship side outer plate. A vertical member, one end of which is fixed to the inner surface or the inner wall of the ship side outer plate, and the vertical bone is vertically provided at the other end of the horizontal member,
The traveling lifting device includes a traveling wheel that travels on a horizontal member of a vertical bone, a supporting member that rotatably supports the traveling wheel, and is disposed in a direction perpendicular to the supporting member and fixed to the supporting member at one end. A main member having a pulley at the other end, and an upper and lower member having one end fixed to a lower surface of the main member or a member connected to the lower surface in the vicinity of the support member, and the other end extending to a vertical bone below the vertical bone And a lower guide wheel provided at a position facing the vertical member of the lower vertical bone at the other end of the upper and lower members and rotating in the traveling direction, and a vertical guide of the vertical bone provided to the member connected to the main member. A guide device having an upper guide wheel rotating in the traveling direction in contact with the horizontal member side surface of the member, a traveling drive device provided on the main member to drive the traveling wheel, and the pulley provided on the main member. And a lifting device for lifting and lowering the lifting object through the .

[0008] The vertical member of the vertical bone is provided in a T-shape at the other end of the horizontal member, and the guide device is provided on the support member. And it has an upper guide wheel which rotates in the running direction in contact with the upper surface.

The vertical member of the vertical bone is provided at the other end of the horizontal member below the horizontal member, and the guide device contacts the surface of the vertical member on the horizontal member side in the traveling direction. A rotating upper guide wheel, a guide wheel support member provided on the upper and lower members or a member connected thereto for supporting the upper guide wheel slidably in the vertical direction, and a vertical movement for moving the upper guide wheel in the vertical direction And a device.

[0010]

The traveling wheel is rotatably supported by the support member and travels along the vertical member on the horizontal member of the vertical member. An upper and lower member is fixed below the main member provided at right angles to the support member, and a lower guide wheel is rotated at the tip thereof in contact with the vertical member surface of the lower vertical bone and connected to the main member. The upper guide wheel of the guide device provided in the above is configured to rotate in contact with the horizontal member side surface of the vertical member of the vertical bone. With this, the running wheel is moved from the horizontal member of the vertical bone to the moment applied when the lifting object is suspended through the pulley provided at the tip of the main member to the lifting device and the horizontal force in the pulley direction of the main member. Riding along a vertical member without derailing. The traveling wheels are driven by the traveling drive device to travel, and the lifting object is lifted by the lifting device via the pulley at the tip of the main member.

The vertical bone has a vertical member attached to the horizontal member in a T-shape, and a vertical member attached to the lower side of the horizontal member in an L-shape. In the case of the T-shape, the upper guide wheel is attached to the support member so as to rotate on the horizontal member side of the vertical member and in contact with the upper surface.
In the case of setting the hull vertical bone traveling lifting device to the vertical bone by such a configuration, the upper guide wheel of the present device is suspended so as to be at a position slightly higher than the vertical member of the vertical bone, and the upper guide wheel is leveled horizontally. By lowering it so as to come to the member side, it can be easily set on the horizontal member of the vertical bone. Thus, it is not necessary to provide the present apparatus for each section, and the present apparatus can be transported to the section to be used and set.

[0012] When the vertical member of the vertical bone is L-shaped below the horizontal member, the upper guide wheel is lowered downward by the vertical movement device, and the running wheels of the device are moved from the horizontal member of the vertical bone. After suspending at a slightly higher position, placing the upper guide wheel on the horizontal member side of the vertical member and installing the running wheel on the horizontal member of the vertical bone, pushing up the upper guide wheel with the vertical movement device, the horizontal member of the vertical member So that the upper guide wheel touches the side. This allows the device to be set as a vertical bone, as in the case of a T-shaped vertical bone, so that the device can be transported to a section to be used and set.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a state in which the first embodiment of the present invention is mounted on a vertical bone and a work gondola is suspended. FIG. 2 shows a side view of the first embodiment, and FIG. 3 shows a front view. FIG. 4 shows FIG.
FIG. FIG. 5 shows a state in which a gondola on which an operator is riding is lifted by the present apparatus. FIG. 6 shows a state in which the present apparatus is set on the vertical bone of the ship side outer panel.

In the first embodiment, when the vertical bone 3 comprises a horizontal member 3a and a vertical member 3b attached to the tip of the horizontal member 3a in a T-shape, the hull vertical bone traveling lift installed on the vertical bone 3 is used. Device (hereinafter, referred to as the present device).

2, 3, and 4, a support member 12 is attached to one end of the two main members 11 at right angles thereto, and the lower surfaces of the two main members 11 are connected by a support plate 13. Have been. The support plate 13 is located at the center of the two main members 11.
The upper and lower members 14 are fixed to the lower surface of the base member, and the upper and lower members 14 are reinforced with diagonal members 15 as shown in FIG. A traveling driving device 16 is provided on the upper surface of the support plate 13 to which the upper and lower members 14 are fixed. The traveling drive device 16 is composed of an air motor rotated by compressed air and a speed reducer, and a pulley 17 is connected to the output shaft. A running wheel 18 is provided at both ends of the support member 12, and the running wheel 18 has a pulley 1
9 are integrally connected with the same rotation axis. Each belt 20 is wound on the pulley 17 on the pulley 19 of the two running wheels 18 to transmit the rotational force. Note that, instead of the pulleys 17, 19 and the belt 20, the rotational force may be transmitted by a sprocket and a chain.

As shown in FIG. 4, the support member 12 is provided with an upper guide wheel 21 to prevent a moment generated when the apparatus lifts the gondola 7 and a horizontal force acting on the pulley 29 side in the axial direction of the main member 11. To support the device. A lower guide wheel 22 is attached to a lower end of the upper and lower members 14 at a position where the lower guide wheel 22 rotates in contact with a vertical member 3b provided on the vertical bone 3 below the vertical bone 3 on which the traveling wheel 18 runs. It counters the moment when the gondola 7 is lifted. At a position facing the vertical member 3b of the vertical bone 3 at the upper part of the upper and lower members 14, there is provided a rotation support 23 for rotatably supporting the ball, and when the upper and lower members 14 and the vertical member 3b approach each other, they come into smooth contact. To do.

A lifting device 24 is provided on the lower surface of the support plate 13 and rotationally drives a drum 25 provided on the upper surface of the main member 11. The lifting device 24 includes an air motor and a speed reducer that are rotated by compressed air, and a pulley 27 provided on the output shaft of the speed reducer and a pulley 28 provided on the drum 25 are connected by a belt 26 to reduce the rotational force. introduce. The air motor of the lifting device 24 is provided with a brake, and there is no danger that the gondola 7 of the suspended load will fall even if the supply of air is cut off. The pulleys 27 and 28
And the belt 26 may be a sprocket and a chain.
A pulley 29 is provided at the tip of the main member 11, and a drum 25 is provided.
Guide the wire rope 30 from. On the upper surface of the main member 11, a hanging bracket 31 of the present apparatus is provided at a position substantially at the center of gravity. A setting bracket 32 is provided between the drum 25 and the pulley 29 for setting the apparatus to the vertical bone 3. The supply of compressed air to the traveling drive device 16 and the lifting device 24 is performed by connecting an air hose, and the operation is performed by an operation pendant.

In this apparatus, the gondola 7 is lifted and travels. As shown in FIG. 5, an operator rides on the gondola 7, moves up and down and travels with an operation pendant, and inspects and repairs the inside of the tank. The gondola 7 has a lightweight structure mainly composed of round pipes, and is dimensioned to enter from the hatch of the tank.

Next, a method for setting the apparatus to the vertical bone 3 will be described with reference to FIG.
This will be described with reference to FIG. This device and gondola 7 are once brought to the lower part of the tank by the hatch provided in the tank,
Move to the target compartment at the bottom of the tank. If the tank is divided into several sections, it shall be possible to move to each section by a traffic hole. Deck 2 at the position where this device is set
Has an opening 4 having a diameter of 200 to 300 mm as shown in the figure.
Is provided. The apparatus is lifted along the vertical bone 3 of the ship side outer plate 1 by hanging the wire rope 5 on the hanging metal fitting 31 from the opening 4, temporarily stopped at the position of the vertical bone 3 to be set, and traveled by setting the setting jig 6 on the setting metal fitting 32. It can be set by raising the support member 12 side with the ring 18 and inserting the support member 12 inside the vertical member 3b of the vertical bone 3 (in this case, the ship side outer plate 1 side).

An example of an operation from loading of the apparatus into the tank to setting, lifting, and running of the vertical bone 3 is as follows. The device and the gondola 7 are carried into the lower part of the tank. The wire rope 5 is lowered from the opening 4 of the deck and connected to the present apparatus. The apparatus is lifted to just below the deck 2, and an air hose is connected to the traveling drive device 16 and the lifting device 24. The apparatus is lowered to the position of the vertical bone 3 to be set, and is hooked on the vertical bone 3 by the setting jig 6. The wire rope 5 on which the apparatus is lifted is relaxed by the amount of movement in the traveling direction. Operate with a control pendant from the lower part of the tank and test-run this device. The lifting wire rope 30 is lowered from the lifting device 24 and connected to the gondola 7. A person gets on the gondola 7 with the operation pendant,
Move freely up and down, left and right.

Next, a second embodiment will be described. The second embodiment is a hull vertical bone traveling lifting device in which the vertical member of the vertical bone is L-shaped below the horizontal member. FIG. 7 shows a side view of the apparatus, and FIG. 8 shows a front view. 2 to 4 have the same functions. An upper and lower member 14a is attached to a lower portion of the two main members 11 via a support plate 13, and the upper and lower members 14a are connected by three horizontal members 41, 42, and 43. An oblique member 15 and a lower guide wheel 22 are attached to each of the upper and lower members 14a.

At both ends of the horizontal member 42, air cylinders 46 for moving a rod in the vertical direction are provided, and an extension rod 45 is connected to the rod.
Is attached. One end of the air cylinder 46 is attached by the horizontal member 42 and the support bracket 48, and the extension rod 4
5 is supported by a horizontal member 41 by a guide wheel support member 47 so as to be slidable in the vertical direction. The stroke of the air cylinder 46 is longer than the length of the vertical member 3c of the vertical bone 3. FIG. 7 shows a state where the stroke is fully extended and the upper guide wheel 44 is in contact with the vertical member 3c.

When the present apparatus is set to the vertical bone, the rod of the air cylinder 46 is set to the shortest state, lifted along the vertical bone 3 and temporarily set at the position of the vertical bone 3 as described with reference to FIG. Stop, put the setting jig 6 on the setting bracket 32,
The support member 12 side with the running wheel 18 is raised, and the running wheel 18
Is pulled down to the root side of the vertical bone 3 and then lowered onto the horizontal member 3a, and the air cylinder 46 is raised so that the upper guide wheel 44 comes into contact with the surface of the vertical member 3c on the horizontal member 3a side. Subsequent operations are the same as in the first embodiment. The travel driving device 1 is provided in the air cylinder 46.
6. Air is supplied by connecting an air hose in the same manner as the lifting device 24. Relax the air hose in consideration of the running range.

In the first and second embodiments, the traveling drive device 16 and the lifting device 24 use air motors driven by compressed air, but may use electric motors.

[0025]

As is apparent from the above description, the lifting device capable of traveling on the vertical bone according to the present invention facilitates inspection work and repair work on the inner wall of the tank. In addition, since this lifting device can be attached to and removed from the vertical bone,
Even if there are a plurality of tank sections to be inspected, one device can be used. As a result, work can be performed more easily and in a shorter time than in each of the conventional inspection methods, the possibility of falling can be reduced, and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a view showing a state in which a first embodiment is mounted on a vertical bone and a work gondola is suspended.

FIG. 2 is a side view of the first embodiment.

FIG. 3 is a front view of the first embodiment.

FIG. 4 is a view on arrow XX of FIG. 3;

FIG. 5 is a view showing a state in which a gondola on which an operator is riding is hung.

FIG. 6 is an explanatory diagram for setting the first embodiment to the vertical bone of the ship side outer plate.

FIG. 7 is a side view of the second embodiment.

FIG. 8 is a front view of the second embodiment.

FIG. 9 is a diagram showing an example of a center section of a hull of a large tanker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ship side outer board 2 Deck 3 Vertical bone 3a Horizontal member 3b, 3c Vertical member 4 Opening 5,30 Wire rope 6 Setting jig 7 Gondola 11 Main member 12 Support member 13 Support plate 14,14a Upper and lower members 15 Diagonal member 16 Travel Driving device 17, 19, 27, 28 Pulley 18 Running wheel 20, 26 Belt 21, 44 Upper guide wheel 22 Lower guide wheel 23 Rotation support bracket 24 Lifting device 25 Drum 29 Pulley 31 Suspension bracket 32 Setting bracket 41, 42, 43 Lateral member 45 Extension rod 46 Air cylinder (vertical moving device) 47 Guide wheel support member 48 Support bracket

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Yuichi Miura 3-1-1-15 Toyosu, Koto-ku, Tokyo Ishikawa Shima-Harima Heavy Industries Co., Ltd. Toji Technical Center (56) References JP-A-61-229062 (JP, A) JP-A-5-278674 (JP, A) JP-A-51-66647 (JP, A) JP-A-61-24297 (JP, U) JP-A-53-10079 (JP, Y2) JP-A 52 −37118 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B63B 9/00 B66C 11/12

Claims (3)

(57) [Claims] 1. A traveling lifting device that travels on a vertical bone provided on an inner surface or an inner wall of a hull outer plate, wherein the vertical bone has one end fixed to the inner surface or the inner wall of the hull outer plate; A vertical member vertically provided at the other end of the horizontal member, wherein the traveling lifting device comprises: a traveling wheel traveling on a horizontal member of a vertical bone; and a support member rotatably supporting the traveling wheel. A main member disposed at right angles to the support member and fixed to the support member at one end and having a pulley at the other end; and one end fixed to a lower surface of the main member or a member connected to the lower surface in the vicinity of the support member. An upper and lower member having the other end extending to the vertical bone below the vertical bone; and a lower guide wheel provided at a position facing the vertical member of the lower vertical bone at the other end of the upper and lower members and rotating in the running direction. The horizontal of the vertical member of the vertical bone provided on the member connected to the main member A guide device having an upper guide wheel that rotates in the traveling direction in contact with the material side surface; a traveling drive device provided on the main member to drive the traveling wheel; and a lifting device provided on the main member via the pulley. And a lifting device for lifting and lowering a heavy object. 2. The vertical member of the vertical bone is provided in a T-shape at the other end of the horizontal member, and the guide device is provided on the support member, and on a horizontal member side of the vertical member of the vertical bone, 2. The hull longitudinal bone running and lifting device according to claim 1, further comprising an upper guide wheel that rotates in the running direction in contact with the upper surface. 3. The vertical member of the vertical bone is provided at the other end of the horizontal member on the lower side of the horizontal member, and the guide device contacts the horizontal member side surface of the vertical member of the vertical bone and moves in the traveling direction. A rotating upper guide wheel, a guide wheel support member provided on the upper and lower members or a member connected thereto for supporting the upper guide wheel slidably in the vertical direction, and a vertical movement for moving the upper guide wheel in the vertical direction The hull vertical bone traveling lifting device according to claim 1, further comprising a device.