KR102616078B1 - Weight transfer apparatus and marine structure with the same - Google Patents

Abstract

It relates to a heavy load transport device and a marine structure to which it is applied, comprising a bogie provided to enable horizontal movement and direction change, a pair of support frames installed in a vertical direction at both ends of the bogie, and the ability to be lifted and lowered between the pair of support frames. A configuration is provided including a lifting beam that is installed, a jack driving part that provides driving force to lift and lower the lifting beam, and a wheel driving part that provides driving force to move the bogie, to vertically lift and lift heavy objects such as hatch covers. Can move horizontally.

Description

Heavy cargo transport equipment and marine structures to which it is applied {WEIGHT TRANSFER APPARATUS AND MARINE STRUCTURE WITH THE SAME}

The present invention relates to a heavy cargo transport device and a marine structure to which it is applied, and more specifically, to a heavy cargo transport device that vertically lifts and horizontally moves a heavy object such as a hatch installed in a well bay of an offshore structure, and to a marine structure to which it is applied.

In general, the completeness and level of technology in offshore projects can be measured by how efficiently a large number of process equipment can be placed within a limited space.

And because marine projects have limited space for horizontal expansion, many equipment and facilities are placed vertically by adding decks or platforms.

These multi-layered marine structures are equipped with basic facilities for transportation for people and goods.

That is, various marine structures, including ships, are provided with a hatch as a passage for lowering or raising cargo between platforms arranged above and below, and a hatch cover is installed on the hatch.

For example, Patent Document 1 and Patent Document 2 below disclose device technology for transferring cargo from an offshore structure.

Republic of Korea Patent Publication No. 10-2014-0133192 (published on November 19, 2014) Republic of Korea Utility Model Publication No. 20-2013-0001787 (published on March 14, 2013)

Meanwhile, in the case of a fixed platform with several to dozens of wells in a well bay, hatches are frequently opened and closed during operation.

Conventionally, various transport devices such as mobile cranes such as floor cranes, gantry cranes, and overhead cranes are used to transport hatches.

However, in the case of the floor cranes and gantry cranes, heavy objects such as hatch covers weighing more than 2 tons can be vertically lifted, but there is a problem in that horizontal transportation (transportation) is impossible while the heavy objects are lifted.

In the case of overhead cranes, vertical lifting and horizontal movement of hatch covers or goods are possible, but crane installation requires a large installation space at the top of the crane's operating space and a heavy structure to install rails, and the crane is installed. It can only be used in that area, and due to the nature of the well bay, there was a problem in that it could not be moved freely due to the riser being installed.

Therefore, conventionally, if there was space in the area, an overhead crane had to be installed or mobile equipment such as an elephant crane or mobile gantry crane had to be used.

The purpose of the present invention is to solve the problems described above and to provide a heavy load transport device capable of vertically lifting and horizontally moving heavy loads in a narrow area, and a marine structure to which the same is applied.

Another object of the present invention is to provide a heavy load transfer device capable of moving to an area requiring heavy load transfer and a marine structure to which the same is applied.

Another object of the present invention is to provide a heavy load transfer device that can be remotely operated during heavy load transfer work and prevent accidents occurring during work, and a marine structure to which the same is applied.

In order to achieve the above-described object, a heavy load transport device according to the present invention includes a bogie capable of horizontal movement and direction change, a pair of support frames installed in the vertical direction at both ends of the bogie, and the pair of support frames. It includes a lifting beam that is installed to be capable of being raised and lowered between support frames, a jack driving part that provides a driving force to lift and lower the lifting beam, and a wheel driving part that provides a driving force to move the bogie, wherein the bogie is arranged side by side on both sides. It includes installed first and second frames and a third frame connecting front ends of the first and second frames, wherein the first and second frames include at least one first frame to enable horizontal movement of the cart. And a second wheel is rotatably installed, and the third frame includes at least one third wheel for horizontal movement of the bogie and rotates by receiving the driving force generated from the wheel drive unit to perform horizontal movement and steering functions of the bogie. It is characterized in that a driving wheel that performs is installed.

The present invention further comprises a power supply unit that supplies power to each device provided in the heavy load transport device, a control unit that controls the operation of each device, and a remote control that receives control commands remotely from a location spaced apart from the bogie. .

The support frame is formed in a rectangular cylindrical shape to provide an installation space therein for installing a power transmission unit that transmits the driving force of the jack drive unit to the lifting beam, and the jack drive unit and the heavy object are located at the top of each support frame. It is characterized in that a moving lug connected to a crane that moves the transfer device is installed.

The lifting beam is installed to be capable of lifting and lowering between the pair of support frames, and at least one lifting lug and shackle are installed on the lifting beam.

The jack driving unit is installed on the upper part of the pair of support frames and includes a driving motor that receives power to generate driving force and a reducer installed on the output shaft of the driving motor to reduce the rotation speed and transmit it to the power transmission unit, The wheel drive unit includes a wheel drive motor for driving the drive wheel and a drive power transmission unit that transmits the drive force of the wheel drive motor to the drive wheel.

The wheel drive unit, power unit, and control unit are provided inside a housing installed on the bogie, and a stand on which a multi-purpose hose is mounted and an electrical box are installed on both sides of the housing. The housing has a device that outputs a warning sound when the heavy load transfer device is driven. A speaker and a warning light that lights up or flashes are installed, and a towing lug is installed on the third frame of the bogie to enable towing in the event of a failure of the heavy load transport device.

A guide bar is installed on the bogie to guide the movement of the heavy material transport device by inserting or separating it into a groove between girders arranged on the deck when the heavy material transport device is moved, and the guide bar is installed at a certain distance up and down. It is characterized in that the first and second through holes are formed to penetrate across.

A rotation screw is installed to be able to rotate on the bracket that fixes the third wheel to the third frame, and a pair of rotation plates to which both ends of the rotation axis of the third wheel are coupled are installed inside the bracket, and the rotation plate rotates around the rotation axis by rotation of the rotation screw, and the third wheel increases the height of the third frame by rotation of the rotation plate, so that during traction work due to a malfunction of the heavy load transport device, It is characterized in that it prevents damage to the drive wheel and wheel drive unit caused by rotation of the drive wheel.

In addition, in order to achieve the above-mentioned object, the marine structure to which the heavy material transfer device according to the present invention is applied is applied, and the heavy material transportation device is moved from the deck to the area where the heavy material is located to vertically lift and It is characterized by horizontal movement.

As described above, according to the heavy material transfer device according to the present invention and the marine structure to which it is applied, the effect of vertical lifting and horizontal movement of heavy materials such as hatch covers weighing more than 2 tons is obtained.

In addition, according to the present invention, remote operation is possible using power or hydraulic power, which has the effect of preventing accidents that occur during heavy load transfer work.

In addition, according to the present invention, horizontal movement is possible, and the effect of quickly and effectively performing the work is obtained by moving the heavy material transfer device to an area where heavy material transportation work is required.

1 is a perspective view of a heavy load transport device according to a preferred embodiment of the present invention;
Figures 2 and 3 are front and top views, respectively, of the heavy load transfer device shown in Figure 1;
Figure 4 is a side view of the heavy load transport device;
Figure 5 is an example of a hatch cover lifted using a heavy load transfer device,
Figure 6 is a partial enlarged view of the third frame;
Figures 7 and 8 are diagrams showing the operating state of the heavy material transport device.

Hereinafter, a heavy load transport device according to a preferred embodiment of the present invention and a marine structure to which it is applied will be described in detail with reference to the attached drawings.

Figure 1 is a perspective view of a heavy load transport device according to a preferred embodiment of the present invention, and Figures 2 and 3 are a rear view and a side view, respectively, of the heavy load transfer device shown in Figure 1.

Hereinafter, the direction in which the third frame is installed around the first and second frames is referred to as 'front', and the opposite direction is referred to as 'rear'.

In addition, terms indicating directions such as 'left', 'right', 'upward' and 'downward' are defined as indicating respective directions based on the front and rear above.

As shown in Figures 1 to 3, the heavy load transport device 10 according to a preferred embodiment of the present invention includes a cart 20 that is provided to enable horizontal movement and direction change, and a vertical direction at both ends of the cart 20. A pair of support frames 30 installed, a lifting beam 40 installed to be capable of being lifted between the pair of support frames 30, and a jack drive unit that provides driving force to raise and lower the lifting beam 40 ( 50) and a wheel drive unit 60 that provides driving force to move the bogie 20.

And the heavy material transport device 10 according to a preferred embodiment of the present invention includes a power supply unit 70 that supplies power to each device provided in the heavy material transport device 10, a control unit 80 that controls the operation of each device, and an operator. It may further include a remote control 90 that receives control commands remotely from a location spaced apart from the bogie 20.

The bogie 20 includes first and second frames 21 and 22 installed side by side on both sides and a third frame 23 connecting the front ends of the first and second frames 21 and 22. When viewed, it may be formed approximately in a 'U' shape.

At least one first and second wheel 24, 25 is rotatably installed on the first and second frames 21 and 22 to enable horizontal movement of the bogie 20, and the third frame 23 At least one third wheel 26 for horizontal movement of the bogie 20 and a drive wheel 27 that rotates by receiving the driving force generated by the wheel drive unit 60 may be installed.

The drive wheel 27 can simultaneously perform a drive function for horizontal movement of the bogie 20 and a steering function for changing the direction of the bogie 20.

The support frame 30 has an approximately square cylindrical shape with a height compared to the horizontal and vertical lengths, so that an installation space is provided inside for the power transmission unit that transmits the driving force of the jack driving unit 50 to the lifting beam 40. can be formed.

A jack driving unit 50 and a moving lug 31 may be installed at the top of each support frame 30.

The moving lug 31 is a part that is connected to a large crane, etc. when moving the heavy material transfer device 10 to another deck or ship position.

The power transmission unit functions to transmit the driving force of the drive motor 51 provided in the jack drive unit 50 to both ends of the lifting beam 40 to perform a lifting operation.

This power transmission unit may be configured to include a gearbox equipped with a plurality of gears.

In this embodiment, the output shaft of the gearbox provided in the power transmission unit and both ends of the lifting beam 40 can be screwed together to raise and lower the lifting beam 40 by rotation of the output shaft.

Of course, the present invention is not necessarily limited to this, and the power transmission unit is configured to raise and lower the lifting beam in various ways, such as configuring a gearbox to drive chains or wires connected to both ends of the lifting beam 40. can be changed in various ways.

The lifting beam 40 is installed to be capable of lifting and lowering between a pair of support frames 30, and at least one lifting lug 41 and a shackle 42 are installed on the lower surface of the lifting beam 40. You can.

In this embodiment, as shown in FIG. 1, two lifting lugs 41 are installed at a preset interval in the center of the lifting beam 40, and a total of two lifting lugs 41 are installed, one on each side of the lower surface of the lifting beam 40. Shackle 42 may be installed.

For example, Figure 4 is a side view of a heavy load transfer device, and Figure 5 is an exemplary view of a hatch cover lifted using a heavy load transfer device.

In Figure 4, the heavy material transport device 10 is shown disposed in the hatch 12 where the hatch cover 11 is installed.

The two lifting lugs 41 function to lift the BOP (Blow Out Preventer) test stump shown in (a) of FIG. 5.

Here, the BOP test stump may be connected to each lifting lug 41 through a pair of slings 13 installed side by side along the vertical direction.

And the two shackles 42 are the normal hatch, operation hatch, test stump hatch, and X-mas trolley hatch shown in (b) to (e) of Figure 5. Trolley hatch) is a function for lifting covers, etc.

Here, each hatch cover can be connected to each shackle 42 using a pair of slings 14 installed to achieve a preset angle.

As the setting angle increases, the possible lifting distance increases, but side force occurs.

On the other hand, as the setting angle becomes smaller, the possible lift distance becomes shorter.

In this embodiment, the setting angle may be set to about 79° to maximize the lifting distance and suppress the generation of side force.

Of course, the present invention is not necessarily limited to this, and the number, position, spacing, and setting angle of the leafing lugs 41 and shackles 42 can be changed according to various conditions such as the size and weight of the hatch cover.

Again in FIGS. 1 to 3, the jack driving unit 50 is installed on the top of a pair of support frames 30, and is installed on the output shaft of the driving motor 51 and the driving motor 51 that receives power to generate driving force. It may include a reducer 52 that reduces the rotation speed and transmits it to the power transmission unit.

The wheel drive unit 60 may include a wheel drive motor 61 for driving the drive wheel 27 and a drive power transmission unit (not shown) that transmits the drive force of the wheel drive motor 61 to the drive wheel 27. You can.

The wheel drive motor 61 may include a plurality of drive motors to move and change direction of the cart 20.

The driving force transmission unit is a gear unit or chain including a plurality of gears to connect the output shaft of the wheel drive motor 61 and both ends of the drive shaft of the drive wheel 27 installed on the third frame 23 of the bogie 20, It may be configured to include a pulley, etc.

The power supply unit 70 may include a storage battery that receives and charges external commercial power and a charging circuit that charges power to the storage battery.

The control unit 80 is provided as a central processing unit that controls the operation of each device provided in the heavy material transport device 10, and provides a control signal that controls the operation of each device according to the operator's operation command input through the remote control 90. may occur.

The remote control 90 is communicatively connected to the control unit 80 through wired or wireless communication, and may include a plurality of switches, buttons, or levers for receiving operating commands from the operator.

Here, the wheel drive unit 60, the power unit 70, and the control unit 80 are provided inside the housing 110 installed on the front side of the third frame 23, and a multi-purpose hose is mounted on both sides of the housing 110. A stand and an electrical box 111 may be installed.

In addition, a speaker 112 that outputs a warning sound when the heavy material transport device 10 is driven and a warning light 113 that lights or flashes may be installed in the housing 110.

Meanwhile, towing lugs 28 may be installed on both ends of the third frame 23 to enable towing in the event of a failure of the heavy load transport device 10.

Therefore, it is preferable that the heavy material transport device 10 moves only in one direction, that is, forward, using the traction lug 28 provided on the third frame 23 when towing.

In addition, a stop switch 71 may be provided at the rear ends of the first and second frames 21 and 22, respectively, to stop the heavy object moving device 10 when an emergency situation occurs.

The emergency stop switch 71 generates an emergency braking signal according to the operator's pressing operation, and the power unit 70 receives the emergency braking signal and cuts off the power supplied to each device.

Therefore, as the driving of each device provided in the heavy material transfer device 10 is stopped, the heavy material lifting and movement operations of the heavy material transfer device 10 are stopped.

In addition, when the emergency braking signal is received, a brake module (not shown) may be further installed on the first to third wheels 24 to 29 to stop the horizontal movement of the heavy material transport device 10.

Figure 6 is a partial enlarged view of the third frame, and Figures 7 and 8 are diagrams of the operating state of the heavy object transport device.

At each vertex of the cart 20, that is, at the rear ends of the first and second frames 21 and 22 and on both sides of the third frame 23, there are guide bars 100 that guide the movement of the heavy material transport device 10, respectively. is installed.

As shown in FIGS. 6 to 8, the guide bar 100 is inserted into the groove between the girders arranged on the deck of the well bay when the heavy material transport device 10 moves, so that the heavy material transport device 10 does not deviate from the movement path. We can guide you to avoid it.

To this end, first and second through-holes 101 and 102 may be formed across the guide bar 100 in the horizontal direction at positions spaced apart from each other by a certain distance up and down.

Therefore, while moving the heavy load transfer device 10 to the well bay where the hatch cover to be transferred is disposed, the guide bar 100 is moved upward as shown in FIG. 7 and moves more than the first through hole 101. It is fixed by a fixing pin installed in the second through hole 101 formed at the bottom.

On the other hand, when moving the heavy material transport device 10 around the hatch, the guide bar 100 is moved downward as shown in FIG. 8 and the fixing pin 103 installed in the first through hole 101 is fixed by

Therefore, since the guide bar 100 is inserted into the groove between the girders arranged on the deck, the heavy material transport device 10 is guided to move along the groove.

Therefore, it is preferable that the heavy load transport device 10 moves at least two of the total four guide bars 100 downward and moves them while they are inserted into the groove.

In this way, the present invention can prevent accidents where the heavy material transport device falls into an open hatch while operating in a narrow space by using a guide bar provided in the heavy material transportation device.

Meanwhile, as shown in FIG. 6, the third wheel 26 is designed to prevent damage to the drive wheel 27 and the wheel drive unit 60 during traction work due to a failure of the heavy load transport device 10, The height of the third frame 23 may be adjusted by rotation.

To this end, a rotating screw 262 that rotates through operator manipulation may be installed on the bracket 261 that secures the third wheel 26 to the third frame 23.

Inside the bracket 261, a pair of rotation plates 264 are installed to which both ends of the rotation shaft 263 of the third wheel 26 are coupled, and the rotation plate 264 is rotated by the rotation screw 262. The height of the third frame 23 can be adjusted by rotating around (263).

For example, the rotation plate 264 may be formed in a gear shape with a plurality of teeth formed on one surface to engage with the threads on the outer peripheral surface of the rotation screw 262.

That is, the rotating screw 262 and the rotating plate 264 may be configured as a fastening structure of a worm and a worm wheel with a large reduction ratio and a feature that makes reversal impossible.

Therefore, according to the rotation direction of the rotation screw 262, the rotation plate 264 rotates around the fastening bolt 265 that couples the bracket 261 and the rotation plate 264, and this causes the rotation axis 263 and the third The height of the third frame 23 can be adjusted by adjusting the distance between the frames 23.

As such, the present invention increases the height of the third frame during the traction operation of the heavy load transport device to separate the drive wheel from the ground, thereby preventing damage to the drive wheel and wheel drive unit due to rotation of the drive wheel.

Meanwhile, in this embodiment, it is explained that each device is driven by receiving power from the power supply unit, but the present invention is not necessarily limited to this.

In other words, the present invention may be modified to drive each device using hydraulic pressure instead of power.

Next, the operating method of the heavy load transport device according to a preferred embodiment of the present invention will be described in detail.

This is an operation state diagram illustrating the operating method of the heavy load transport device according to a preferred embodiment of the present invention.

First, the heavy material transfer device 10 is placed in the area where heavy materials such as hatch covers are to be transported.

At this time, the heavy material transfer device 10 can be moved using the moving lugs 31 provided on the pair of support frames 30.

When moved near the location where heavy material transfer work is to be performed, the heavy material transfer device 10 receives the operator's operating command through the remote control 90, and the control unit 80 operates the driving wheel 26 according to the input operating command. The driving of the wheel drive unit 60 is controlled to drive and move to the upper part of the hatch.

At this time, as shown in FIG. 8, the heavy load transfer device 10 moves to the upper part of the hatch while fixing the guide bar 100 by moving it downward to be inserted into the groove between the girders arranged on the deck.

When the movement of the heavy material transport device 10 is completed, the hatch cover is fixed to the shackle 42 or the lifting lug 41 of the lifting beam 40 using a sling, and the jack driving unit 50 is driven to lift the lifting beam ( 40) is raised and lowered to open or close the hatch cover.

Through the process described above, the present invention can vertically lift and horizontally move heavy objects such as hatch covers weighing more than 2 tons.

In addition, since the present invention can be operated remotely using power or hydraulic power, accidents that occur during heavy load transfer work can be prevented in advance.

In addition, the present invention is provided to enable horizontal movement, so that the work can be performed quickly and effectively by moving the heavy load transfer device to an area where heavy load transfer work is required.

Although the invention made by the present inventor has been described in detail according to the above-mentioned embodiments, the present invention is not limited to the above-described embodiments and, of course, can be changed in various ways without departing from the gist of the invention.

The present invention is applied to a heavy material transport device that vertically lifts and horizontally moves heavy materials such as hatch covers, and marine structure technology to which the same is applied.

10: Heavy material transport device
11: hatch cover 12: hatch
13,14: Sling
20: Bogies 21 to 23: First to third frames
24 to 26: first to third wheels 261: bracket
262: rotating screw 263: rotating shaft
264: Rotating plate 265: Fastening bolt
27: drive wheel 28: traction lug
30: support frame 31: moving lug
40: lifting beam 41: lifting lug
42: Shackle
50: jack driving unit 51: driving motor
52: reducer
60: wheel drive unit 61: wheel drive motor
70: power unit 71: stop switch
80: Control unit 90: Remote control
100: Guide bar 101,102: First and second through holes
103: fixing pin
110: housing 111: speaker
112: warning light

Claims (9)

A bogie (20) capable of horizontal movement and direction change,
A pair of support frames 30 installed in a vertical direction at both ends of the bogie 20,
A lifting beam (40) installed to be capable of being raised and lowered between the pair of support frames (30),
A jack driving unit 50 that provides driving force to lift the lifting beam 40, and
It includes a wheel drive unit 60 that provides driving force to move the bogie 20,
The cart 20 includes first and second frames 21 and 22 installed side by side on both sides,
It includes a third frame (23) connecting the front ends of the first and second frames (21, 22),
At least one first and second wheel (24, 25) is rotatably installed on the first and second frames (21, 22) to enable horizontal movement of the bogie (20),
The third frame 23 includes at least one third wheel 26 for horizontal movement of the bogie 20 and
A drive wheel 27 is installed to receive the driving force generated from the wheel drive unit 60 and rotate to perform horizontal movement and steering functions of the bogie 20,
The pair of support frames 30 are formed in a rectangular cylindrical shape to provide an installation space therein where a power transmission unit that transmits the driving force of the jack drive unit 50 to the lifting beam 40 is installed,
At each upper end of the pair of support frames 30, the jack driving unit 50 and
A heavy material transport device, characterized in that a moving lug (31) connected to a crane that moves the heavy material transport device (10) is installed. According to paragraph 1,
A power supply unit 70 that supplies power to each device provided in the heavy material transport device 10,
A control unit 80 that controls the operation of each device, and
A heavy material transport device further comprising a remote control (90) that remotely receives control commands from a position spaced apart from the cart (20). delete According to paragraph 2,
The lifting beam 40 is installed to be capable of lifting and lowering between the pair of support frames 30,
A heavy material transport device, characterized in that at least one lifting lug (41) and a shackle (42) are installed on the lifting beam (40). According to paragraph 2,
The jack driving unit 50 is installed on the upper part of the pair of support frames 30 and includes a driving motor 51 that receives power and generates driving force.
It includes a reducer 52 installed on the output shaft of the drive motor 51 to reduce the rotation speed and transmit it to the power transmission unit,
The wheel drive unit 60 includes a wheel drive motor 61 for driving the drive wheel 27 and
A heavy load transport device comprising a driving force transmission unit that transmits the driving force of the wheel drive motor (61) to the driving wheel (27). According to paragraph 2,
The wheel drive unit 60, power unit 70, and control unit 80 are provided inside the housing 110 installed on the bogie 20,
A stand on which a multi-purpose hose is mounted and an electrical box 111 are installed on both sides of the housing 110,
The housing 110 is equipped with a speaker 112 that outputs a warning sound when the heavy load transfer device 10 is driven and a warning light 113 that lights or flashes,
A heavy load transfer device, characterized in that a traction lug (28) is installed on the third frame (23) of the bogie (20) to enable towing in the event of a failure of the heavy load transfer device (10). According to paragraph 2,
A guide bar 100 is installed on the bogie 20 to guide the movement of the heavy load transfer device 10 by inserting or separating it into a groove between girders arranged on the deck when the heavy load transfer device 10 moves,
A heavy load transport device, characterized in that first and second through holes (101, 102) are formed across the guide bar (100) at positions spaced apart from each other by a certain distance up and down. According to paragraph 2,
A rotary screw 262 is rotatably installed on the bracket 261 that secures the third wheel 26 to the third frame 23,
Inside the bracket 261, a pair of rotating plates 264 are installed at both ends of the rotating shaft 263 of the third wheel 26,
The rotation plate 264 rotates about the rotation axis 263 by rotation of the rotation screw 262,
The third wheel 26 increases the height of the third frame 23 by rotation of the rotation plate 264, so that during traction work due to failure of the heavy load transport device 10, the driving wheel ( A heavy material transport device, characterized in that it prevents damage to the driving wheel (27) and the wheel driving unit (60) caused by rotation of the wheel (27). The heavy load transfer device 10 described in any one of paragraphs 1, 2, and 4 to 8 is applied,
A marine structure equipped with a heavy cargo transport device, characterized in that the heavy cargo transport device (10) is moved from the deck to the area where the heavy cargo is located, thereby vertically lifting and horizontally moving the heavy cargo.

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