WO2011023849A1 - Operating mechanism of a loading hatch of a cargo ship - Google Patents

Operating mechanism of a loading hatch of a cargo ship Download PDF

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Publication number
WO2011023849A1
WO2011023849A1 PCT/FI2010/050628 FI2010050628W WO2011023849A1 WO 2011023849 A1 WO2011023849 A1 WO 2011023849A1 FI 2010050628 W FI2010050628 W FI 2010050628W WO 2011023849 A1 WO2011023849 A1 WO 2011023849A1
Authority
WO
WIPO (PCT)
Prior art keywords
hatch
hatch panel
operating mechanism
panel
mechanism according
Prior art date
Application number
PCT/FI2010/050628
Other languages
French (fr)
Inventor
Ilkka Kukko-Liedes
Original Assignee
Cargotec Finland Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cargotec Finland Oy filed Critical Cargotec Finland Oy
Publication of WO2011023849A1 publication Critical patent/WO2011023849A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B19/00—Arrangements or adaptations of ports, doors, windows, port-holes, or other openings or covers
    • B63B19/12—Hatches; Hatchways
    • B63B19/14—Hatch covers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B19/00—Arrangements or adaptations of ports, doors, windows, port-holes, or other openings or covers
    • B63B19/12—Hatches; Hatchways
    • B63B19/14—Hatch covers
    • B63B19/18—Hatch covers slidable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/46—Gearings comprising primarily only links or levers, with or without slides with movements in three dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B19/00—Arrangements or adaptations of ports, doors, windows, port-holes, or other openings or covers
    • B63B19/12—Hatches; Hatchways
    • B63B19/14—Hatch covers
    • B63B19/18—Hatch covers slidable
    • B63B2019/185—Hatch covers slidable with sliding bearings

Definitions

  • the current invention relates to the operating mechanism of a loading hatch of a ship, and more particularly of a cargo ship.
  • Cargo ships typically contain one or more loading hatches formed from one or more hatch panels, which hatch panels must be moved so that the cargo space, i.e. the cargo hold, of the ship can be covered or opened.
  • the aforementioned hatch panels can be moved between their open position and closed position, so that the cargo hold of the ship can be opened or closed.
  • a large force is needed, particularly for closing the hatches, because the sealing between the loading hatch panels must be compressed and, on the other hand, when opening the hatches since the loading hatch panels must be raised upwards into the travel position.
  • the invention thus relates to the opening and closing of the loading hatches of a cargo ship by means of some actuator.
  • An operating apparatus of a loading hatch is traditionally implemented such that raising and lowering the hatch panels and, on the other hand, the actual driving of the hatch panels, are implemented with separate devices.
  • the raising and lowering movement is typically implemented e.g. with a cylinder-operated lever mechanism, of which there are normally two units, one unit per pair of hatches, or with wheel lifters, of which there are 8 units per pair of hatches.
  • Driving the loading hatches, for its part is implemented e.g. with a rack-and-pinion drive, which is small in terms of its power and power requirement because the hatch panels roll on their travel wheels along a flat wheel track.
  • Locking of the loading hatches is typically handled with separate manually-operated locks or locking pins, of which there are a number in one loading hatch panel.
  • One solution for an operating mechanism of the loading hatches of a cargo ship is presented in publication FI 20060604, wherein the panels of a loading hatch can be moved in the solution according to the publication by means of toothed racks fixed to the panels.
  • Prior-art solutions have certain weaknesses and drawbacks. A number of different devices are needed in apparatuses according to prior-art solutions for raising and lowering the loading hatches and, on the other hand, for driving them, which is undesirable because the apparatus becomes more prone to failure and complex, and the servicing require- ments, and thus costs, increase.
  • the operating mechanism according to the invention is characterized by what is stated in the characterization part of claim 1.
  • the operating mechanism according to the invention is also characterized by what is disclosed in claims 2-10.
  • the invention presents an operating mechanism of loading hatches (more particularly of side-rolling hatches), which mechanism enables the use of a conventional actuator (hydraulic motor or electric motor) as the only actuator when driving the hatch panels into the open position and into the closed position.
  • a conventional actuator hydraulic motor or electric motor
  • a large force is produced, which force is needed for closing the hatches because the sealing between the loading hatch panels must be compressed and, on the other hand, when opening the hatches since the loading hatch panels must be raised upwards into the travel position.
  • the mechanism question also enables automatic locking in the closed position of the hatches.
  • the operating mechanism according to the invention is implemented such that the actuator is fixed to a sliding carriage on guides, which carriage when moving via a lever mechanism raises the loading hatch into the travel position. After lifting, the actuator pulls the loading hatch open by means of a toothed rack fixed to the loading hatch.
  • the solution according to the invention has certain advantages when it is compared to prior-art solutions.
  • the solution according to the invention presents an operating mechanism that enables the handling of all drive functions (raising/lowering and travel) with one low-powered actuator (one actuator per loading hatch panel).
  • the solution according to the invention is suited to both a hydraulic motor drive and to an electric motor drive.
  • Fig. Ia presents an operating mechanism as viewed from the side.
  • Fig. Ib presents an operating mechanism (according to Fig. Ia) as viewed from the top, when the sliding base is in the position A, when the hatch panel is such that it closes the cargo space.
  • Fig. 2a presents an operating mechanism as viewed from the side.
  • Fig. 2b presents an operating mechanism (according to Fig. 2a) as viewed from the top, when the sliding base is in the position B, when the hatch panel is in the travel position (a drivable intermediate position).
  • Fig. 3a presents a side view of an operating mechanism.
  • Fig. 3b presents an operating mechanism (according to Fig. 3a) as viewed from the top, when the sliding base is such that the hatch panel is in a drivable intermediate position.
  • Figs. 4a and 4b present a situation in which the loading hatches, i.e. the hatch panels, are in the closed position.
  • Fig. 4a presents a side view of a solution according to the invention
  • Fig. 4b presents a top view of a solution according to the invention
  • Figs. 5a and 5b present a situation in which the loading hatches, i.e. the hatch panels, are in a drivable intermediate position.
  • Fig. 5a presents the aforementioned situation as viewed from the side, and Fig. 5b as viewed from the top.
  • Figs. 6a and 6b present a situation in which the loading hatches, i.e. the hatch panels, are in the open position, fully open.
  • Fig. 6a presents a side view and Fig. 6b a top view of a situation in which the hatch panels are fully open.
  • the operating mechanism 25 is implemented by means of a sliding base 1 and tumable lever arms 2 and 3.
  • the sliding base 1 moves supported on one more guide or guides 4 (left guide 4 ' , right guide 4 ' ' ) fixed to the hull of the ship.
  • the lever arm 2 is fixed in an articulated manner with a hinge 14 to the sliding base and the lever arm 3 is fixed in an articulated manner with a hinge 13 e.g. directly or otherwise to the hull of the ship.
  • the lever arms 2,3 are also fixed in an articulated manner with a hinge 15 to each other.
  • the actuator 5, such as an electric drive or hydraulic drive, that is visible in Fig.
  • the mechanism in question locks the loading hatch into the closed position, as is presented in Figs. Ia and Ib, automatically without separate actuators because the pin 10 fixed into a hatch panel in the closed position rests on the groove 9 made in the top end of the lever arm 3, and forces to turn the lever 3 are not produced from the pin 10 owing to the advantageous location of the hinge point 13.
  • Figs. 3a and 3b when the sliding base approaches the position B the contact of the gear wheel 6 with the toothed rack 7 detaches, and at the same time the gear wheel 11 that is rotated by the gear wheel 6 attaches to the toothed rack 12 fixed to the hatch panel. When the gear wheels 6, 11 continue their rotation, the hatch panel moves into the open position.
  • FIGs. 4a and 4b present a situation according to Fig. Ia, in which the loading hatches, i.e. the hatch panels, are in the closed position.
  • the wheels 16 fitted to the hatch panels, supported by which wheels the hatch panels can move are in the grooves 17, which grooves or corresponding are made in the hull of the ship, or in which hull of the ship wheel tracks 22 and the aforementioned grooves are directly or indirectly made.
  • the hatch panels 18 and 19 are held tightly against each other and the ends of them comprise seals 24 that press fast against each other, in which case water or dirt is not able to pass between them into the cargo space 23.
  • Figs. 5a and 5b present a situation according to Fig. 2a, in which the loading hatches are in the drivable intermediate position, i.e. the wheels
  • the hatch panels 16 have risen from the grooves 17 onto the wheel tracks 22, and the hatch panels can be moved by means of the operating mechanism 25 according to the invention when they are supported on wheels on top of the wheel track 22.
  • the hatch panels can be moved lightly on top of the aforementioned tracks because the wheels take the weight of the hatch panels 18, 19.
  • Figs. 6a and 6b present a side view and a top view of a situation in which the loading hatches 18 and 19 are in the open position, i.e. they do not cover the cargo space 23, in other words the cargo hold, at all.
  • the loading hatches have been driven into the position according to the figure by means of the operating mechanism 25, and the loading hatches are according to the figure in the second extreme position, i.e. as far apart from each other as possible.
  • the grooves 17 presented in the figure, in which grooves the wheels 16 fitted into the loading hatches 18, 19 are able to travel, are essentially vertical on the one side and inclined on the other side, in which case the wheels rise (the loading hatches rise) onto the wheel track 22 by means of the operating mechanism 25.
  • each hatch panel can consist of one or more pieces, which are connected or joined to each other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Ship Loading And Unloading (AREA)

Abstract

Operating mechanism (25) of a loading hatch of a cargo ship, which loading hatch comprises at least one hatch panel (18,19), which hatch panel can be moved between an open position and a closed position for opening and closing the cargo space (23) of a cargo ship, and in which at least one actuator apparatus is fitted to the hatch panel, or in connection with it, for achieving movement of the hatch panel between the open position and the closed position, and in which the hatch panel can be raised into a travel position and can be lowered into a locking position, a sliding base (1), which is arranged to slide supported by a guide or guides (4 ',4") on the hull of the ship, and by means of the aforementioned sliding base as well as at least one hinged lever arm (2,3) or sector gear connected directly or indirectly to the hull of the ship.

Description

OPERATING MECHANISM OF A LOADING HATCH OF A CARGO SHIP
Background of the invention
The current invention relates to the operating mechanism of a loading hatch of a ship, and more particularly of a cargo ship. Cargo ships typically contain one or more loading hatches formed from one or more hatch panels, which hatch panels must be moved so that the cargo space, i.e. the cargo hold, of the ship can be covered or opened. With the operating mechanism of a loading hatch according to the invention the aforementioned hatch panels can be moved between their open position and closed position, so that the cargo hold of the ship can be opened or closed.
A large force is needed, particularly for closing the hatches, because the sealing between the loading hatch panels must be compressed and, on the other hand, when opening the hatches since the loading hatch panels must be raised upwards into the travel position.
The invention thus relates to the opening and closing of the loading hatches of a cargo ship by means of some actuator.
Prior art solutions
Various different solutions for operating mechanisms of the loading hatches of a cargo ship are known in the art.
An operating apparatus of a loading hatch is traditionally implemented such that raising and lowering the hatch panels and, on the other hand, the actual driving of the hatch panels, are implemented with separate devices.
The raising and lowering movement is typically implemented e.g. with a cylinder-operated lever mechanism, of which there are normally two units, one unit per pair of hatches, or with wheel lifters, of which there are 8 units per pair of hatches. Driving the loading hatches, for its part, is implemented e.g. with a rack-and-pinion drive, which is small in terms of its power and power requirement because the hatch panels roll on their travel wheels along a flat wheel track.
Locking of the loading hatches is typically handled with separate manually-operated locks or locking pins, of which there are a number in one loading hatch panel. One solution for an operating mechanism of the loading hatches of a cargo ship is presented in publication FI 20060604, wherein the panels of a loading hatch can be moved in the solution according to the publication by means of toothed racks fixed to the panels. Prior-art solutions have certain weaknesses and drawbacks. A number of different devices are needed in apparatuses according to prior-art solutions for raising and lowering the loading hatches and, on the other hand, for driving them, which is undesirable because the apparatus becomes more prone to failure and complex, and the servicing require- ments, and thus costs, increase.
Brief description of the invention
The operating mechanism according to the invention is characterized by what is stated in the characterization part of claim 1.
The operating mechanism according to the invention is also characterized by what is disclosed in claims 2-10. The invention presents an operating mechanism of loading hatches (more particularly of side-rolling hatches), which mechanism enables the use of a conventional actuator (hydraulic motor or electric motor) as the only actuator when driving the hatch panels into the open position and into the closed position. In the solution according to the invention a large force is produced, which force is needed for closing the hatches because the sealing between the loading hatch panels must be compressed and, on the other hand, when opening the hatches since the loading hatch panels must be raised upwards into the travel position. The mechanism question also enables automatic locking in the closed position of the hatches.
The operating mechanism according to the invention is implemented such that the actuator is fixed to a sliding carriage on guides, which carriage when moving via a lever mechanism raises the loading hatch into the travel position. After lifting, the actuator pulls the loading hatch open by means of a toothed rack fixed to the loading hatch. The solution according to the invention has certain advantages when it is compared to prior-art solutions.
The solution according to the invention presents an operating mechanism that enables the handling of all drive functions (raising/lowering and travel) with one low-powered actuator (one actuator per loading hatch panel).
The solution according to the invention is suited to both a hydraulic motor drive and to an electric motor drive.
The solution according to the invention simplifies the installation and maintenance of hatches, and it is indeed simple, inexpensive and operationally reliable in its structure. Detailed description of the invention
In the following the solution according to the invention is described in more detail, with reference to the figures 1 - 6c, wherein Fig. Ia presents an operating mechanism as viewed from the side.
Fig. Ib presents an operating mechanism (according to Fig. Ia) as viewed from the top, when the sliding base is in the position A, when the hatch panel is such that it closes the cargo space.
Fig. 2a presents an operating mechanism as viewed from the side. Fig. 2b presents an operating mechanism (according to Fig. 2a) as viewed from the top, when the sliding base is in the position B, when the hatch panel is in the travel position (a drivable intermediate position).
Fig. 3a presents a side view of an operating mechanism.
Fig. 3b presents an operating mechanism (according to Fig. 3a) as viewed from the top, when the sliding base is such that the hatch panel is in a drivable intermediate position.
Figs. 4a and 4b present a situation in which the loading hatches, i.e. the hatch panels, are in the closed position. Fig. 4a presents a side view of a solution according to the invention, and Fig. 4b presents a top view of a solution according to the invention
Figs. 5a and 5b present a situation in which the loading hatches, i.e. the hatch panels, are in a drivable intermediate position. Fig. 5a presents the aforementioned situation as viewed from the side, and Fig. 5b as viewed from the top.
Figs. 6a and 6b present a situation in which the loading hatches, i.e. the hatch panels, are in the open position, fully open. Fig. 6a presents a side view and Fig. 6b a top view of a situation in which the hatch panels are fully open.
According to Figs. Ia and Ib, the operating mechanism 25 according to the invention is implemented by means of a sliding base 1 and tumable lever arms 2 and 3. The sliding base 1 moves supported on one more guide or guides 4 (left guide 4 ' , right guide 4 ' ' ) fixed to the hull of the ship. The lever arm 2 is fixed in an articulated manner with a hinge 14 to the sliding base and the lever arm 3 is fixed in an articulated manner with a hinge 13 e.g. directly or otherwise to the hull of the ship. The lever arms 2,3 are also fixed in an articulated manner with a hinge 15 to each other. The actuator 5, such as an electric drive or hydraulic drive, that is visible in Fig. Ib rotates a gear wheel 6, and further a gear wheel 11 since it is in contact with the gear wheel 6. The shafting of the gear wheels is described with the reference numbers 20 and 21. In the lifting phase of the loading hatch, i.e. when it is desired to lift the hatch panel 19 upwards, the gear wheel 6 is in this case in connection with the toothed rack 7 that is fixed to the guide 4'. Rotation of the gear wheel 6, when it is in contact with the toothed rack, causes the sliding base 1 to move, which then turns the turnable lever arms 2 and 3. The top end 8 of the lever arm 3 is in connection with the loading hatch, i.e. with the pin 10 fixed to the hatch panel 19, via a groove made in said top end of the lever arm. When the sliding base is driven from position A to position B, as is presented in Figs. Ia and Ib and further in Figs. 2a and 2b, the loading hatch, i.e. the hatch panel 19 rises into the travel position (into the drivable intermediate position) by means of the lever mechanism described above. At the same time the wheels 16 (presented in Figs. 4a, 4b) of the loading hatch rise onto the top of the fixed wheel tracks 22, enabling driving of the hatch panel on top of the aforementioned tracks.
The mechanism in question locks the loading hatch into the closed position, as is presented in Figs. Ia and Ib, automatically without separate actuators because the pin 10 fixed into a hatch panel in the closed position rests on the groove 9 made in the top end of the lever arm 3, and forces to turn the lever 3 are not produced from the pin 10 owing to the advantageous location of the hinge point 13. According to Figs. 3a and 3b, when the sliding base approaches the position B the contact of the gear wheel 6 with the toothed rack 7 detaches, and at the same time the gear wheel 11 that is rotated by the gear wheel 6 attaches to the toothed rack 12 fixed to the hatch panel. When the gear wheels 6, 11 continue their rotation, the hatch panel moves into the open position. Moving the hatch panel back into the closed position occurs by changing the direction of rotation of the gear wheels, in which case the phases described above are repeat in reverse sequence. Figs. 4a and 4b present a situation according to Fig. Ia, in which the loading hatches, i.e. the hatch panels, are in the closed position. In this case the wheels 16 fitted to the hatch panels, supported by which wheels the hatch panels can move, are in the grooves 17, which grooves or corresponding are made in the hull of the ship, or in which hull of the ship wheel tracks 22 and the aforementioned grooves are directly or indirectly made.
The hatch panels 18 and 19 are held tightly against each other and the ends of them comprise seals 24 that press fast against each other, in which case water or dirt is not able to pass between them into the cargo space 23.
Figs. 5a and 5b present a situation according to Fig. 2a, in which the loading hatches are in the drivable intermediate position, i.e. the wheels
16 have risen from the grooves 17 onto the wheel tracks 22, and the hatch panels can be moved by means of the operating mechanism 25 according to the invention when they are supported on wheels on top of the wheel track 22. The hatch panels can be moved lightly on top of the aforementioned tracks because the wheels take the weight of the hatch panels 18, 19.
Figs. 6a and 6b present a side view and a top view of a situation in which the loading hatches 18 and 19 are in the open position, i.e. they do not cover the cargo space 23, in other words the cargo hold, at all. The loading hatches have been driven into the position according to the figure by means of the operating mechanism 25, and the loading hatches are according to the figure in the second extreme position, i.e. as far apart from each other as possible. The grooves 17 presented in the figure, in which grooves the wheels 16 fitted into the loading hatches 18, 19 are able to travel, are essentially vertical on the one side and inclined on the other side, in which case the wheels rise (the loading hatches rise) onto the wheel track 22 by means of the operating mechanism 25.
It is obvious to the person skilled in the art that the invention is not limited only to the embodiments presented above, but that it can be varied within the scope of the claims presented below. It is possible to implement the solution according to the invention also by using just one lever arm, which is connected to the sliding base and with which the hatch panels can be raised or lowered. The mechanism according to the invention can be implemented also such that the lever arms are replaced e.g. with sector gears. Also the position of the hinge points and the dimensional relationships and position of the mechanism can be changed if necessary. Further, the toothed rack drive can be replaced with e.g. chain devices, friction wheel devices or cable traction devices.
In the solution according to the invention, each hatch panel can consist of one or more pieces, which are connected or joined to each other.

Claims

1. Operating mechanism (25) of a loading hatch of a cargo ship, which loading hatch comprises at least one hatch panel
(18,19), which hatch panel can be moved between an open position and a closed position for opening and closing the cargo space (23) of a cargo ship, and in which at least one actuator apparatus is fitted to the hatch panel, or in connec- tion with it, for achieving movement of the hatch panel between the open position and the closed position, characterized in that the hatch panel can be raised into a travel position and can be lowered into a locking position by means of a sliding base (1), which is arranged to slide supported by a guide or guides (4 ' ,4") on the hull of the ship, and by means of the aforementioned sliding base as well as at least one hinged lever arm (2,3) or sector gear connected directly or indirectly to the hull of the ship.
2. Operating mechanism according to claim 1, characterized in that a lever arm (3) is fitted with shafting, such as with a shaft (13), directly or indirectly to the hull of the ship, and to a second lever arm (2), such that the hatch panel can be raised and lowered with the aforementioned lever arm (3) when the sliding base moves.
3. Operating mechanism according to claim 1 or 2, characterized in that at least two gear wheels (6,11) are fitted to the sliding base, which gear wheels can be in contact with a toothed rack (12) that is on the guide (4) and/or on the hatch panel for moving the hatch panel.
4. Operating mechanism according to claim 3, characterized in that the direction of rotation of the gear wheels (6,11) can be changed for moving the hatch panel between the open position and the closed position.
5. Operating mechanism according to claim 1, characterized in that a toothed rack (12) or a stud bolt of the travel direction of the hatch panel is fitted to the hatch panel for moving the hatch panel.
6. Operating mechanism according to claim 1, characterized in that a groove or recess (9) is made in the second end of the lever arm (3), into which a pin (10), or lug, in the hatch panel (18,19) can be fitted for raising the hatch panel upwards and/or for lowering as well as locking it with a lever arm (3).
7. Operating mechanism according to claim 3 or 4, characterized in that at least one of the gear wheels is rotated with an electric drive or hydraulic drive (5) fitted to the sliding base.
8. Operating mechanism according to claim 1, characterized in that the lever arms (2,3) are fitted to the side or to the sides of the sliding base (1).
9. Operating mechanism according to claim 1, characterized in that a stud bolt of the travel direction of the hatch panel is fitted into the hatch panel.
10. Operating mechanism according to claim 1, characterized in that a chain device, a friction wheel device or a cable traction device for moving the hatch panel is connected to the hatch panel .
PCT/FI2010/050628 2009-08-24 2010-08-12 Operating mechanism of a loading hatch of a cargo ship WO2011023849A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20095865 2009-08-24
FI20095865A FI121418B (en) 2009-08-24 2009-08-24 Operating mechanism for a cargo hatch in a cargo ship

Publications (1)

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WO2011023849A1 true WO2011023849A1 (en) 2011-03-03

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JP (1) JP5649871B2 (en)
KR (1) KR101702849B1 (en)
CN (1) CN101992838B (en)
FI (1) FI121418B (en)
WO (1) WO2011023849A1 (en)

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KR102121340B1 (en) * 2018-12-03 2020-06-26 최인규 Appratus for opening and closing hatch cover in ship
CN112588784B (en) * 2020-11-27 2022-04-26 青岛盈拓环保科技有限公司 Rapid treatment device for industrial plastic recovery
CN114622797B (en) * 2022-05-16 2022-07-15 南通宏亮船舶科技有限公司 Porthole door based on marine accessory can overturn slidingtype
KR20240146617A (en) 2024-08-29 2024-10-08 에스엠에스 에스엠이 프라이비트 리미티드 Operation device for Rolling hatch cover

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Publication number Priority date Publication date Assignee Title
US9394708B2 (en) 2013-03-01 2016-07-19 Stageline Scene Mobile Inc. Articulated floor structure for a mobile stage framework
US9512629B2 (en) 2013-03-01 2016-12-06 Stageline Scene Mobile Inc. Mobile stage framework and method of handling

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Publication number Publication date
CN101992838A (en) 2011-03-30
JP2011042362A (en) 2011-03-03
KR101702849B1 (en) 2017-02-06
CN101992838B (en) 2015-01-14
FI121418B (en) 2010-11-15
KR20110020736A (en) 2011-03-03
FI20095865A0 (en) 2009-08-24
JP5649871B2 (en) 2015-01-07

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