WO2007147932A1 - Actuator mechanism of cargo ship hatch - Google Patents

Actuator mechanism of cargo ship hatch Download PDF

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Publication number
WO2007147932A1
WO2007147932A1 PCT/FI2007/050301 FI2007050301W WO2007147932A1 WO 2007147932 A1 WO2007147932 A1 WO 2007147932A1 FI 2007050301 W FI2007050301 W FI 2007050301W WO 2007147932 A1 WO2007147932 A1 WO 2007147932A1
Authority
WO
WIPO (PCT)
Prior art keywords
hatch
toothed
actuator mechanism
toothed rack
toothed wheel
Prior art date
Application number
PCT/FI2007/050301
Other languages
French (fr)
Inventor
Antti Risti
Original Assignee
Macgregor (Fin) 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 Macgregor (Fin) Oy filed Critical Macgregor (Fin) Oy
Priority to KR1020087030748A priority Critical patent/KR101451605B1/en
Publication of WO2007147932A1 publication Critical patent/WO2007147932A1/en

Links

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
    • B63B19/18—Hatch covers slidable
    • 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

Definitions

  • the present invention relates to an actuator mechanism of a cargo ship hatch, the hatch comprising at least one hatch panel movable between its open/- closed positions, the hatch panel having connected thereto and aligned in a direction substantially parallel to the hatch panel movement a toothed rack actuated by a toothed wheel driven by an actuator means.
  • the invention is particularly directed to opening/closing cargo ship hatch panels by an actuator means.
  • High forces are required particularly during closing the hatch panels when the seal between the panels must be compressed and, respectively, during opening the hatch panels when the panels must be raised up into their driving position.
  • the hatch actuator machinery has conventionally been implemented using separate actuators for raising/lowering the hatch panels and, on the other hand, for actually driving the hatch panels.
  • the rise/close motion of the hatch panels may be implemented, e.g., by connecting a pair of a cylinder-actuated lever mechanisms between each adjacent pair of the hatch panels or using wheel lifting mechanisms, of which there are adapted eight wheels per each pair of hatch panels.
  • the drive movement of the hatch panels has generally been solved by means of, e.g., using a toothed rack/gear drive mechanism generating a low force and requiring a minimal drive power inasmuch as the hatch panels can travel on their wheels along a smooth pair of rails.
  • Locking of hatch panels has conventionally been implemented by means of separate manually-operated locks or locking pins that are needed in multiple numbers per each hatch panel.
  • these prior-art embodiments have been hampered by needing separate devices for raising/lowering the hatch panels and, further, for driving them.
  • the ship's personnel may neglect the extra step of locking the panels, whereby the hatch panels may open inadvertently at sea causing damage to the cargo even up to full destruction due to the deteriorated weatherproofness of the panels.
  • the opening of the hatch panels may jeopardize the safety of the entire ship.
  • the actuator mechanism according to the invention is characterized in that at a least a portion of the toothed rack has a curved shape and that at a distance from the toothed wheel, substantially close to the toothed wheel, is mounted a backing element adapted to keep the toothed rack meshed with the toothed wheel.
  • a preferred embodiment of the actuator mechanism according to the invention is characterized in that the backing element is an idler wheel having its support shaft aligned substantially parallel to that of the toothed wheel and in that the backing element is mounted on the opposite side of the toothed rack in regard to the toothed wheel.
  • Another preferred embodiment of the actuator mechanism according to the invention is characterized in that the toothed wheel and the backing element are mounted on a support frame pivotally connected to the ship hull.
  • a still further another preferred embodiment of the actuator mechanism according to the invention is characterized in that the toothed rack is adapted at a point coinciding substantially with the center point of the hatch panel front/rear edges and that the curved section of the toothed rack is situated outside the rear edge of the hatch panel.
  • Other preferred embodiments of the invention are disclosed in the annexed dependent claims 5 and 6.
  • the benefits of the invention include that all the drive functions (raise/lower and drive) can be handled by a single low-power actuator thus needing not more than one actuator per each hatch panel. Furthermore, by virtue of the invention, locking/unlocking the hatch does not need a separate workstep that could be neglected.
  • the actuator mechanism according to the invention can be driven by either hydraulic or electrical means. Additionally, the invention simplifies the mounting and maintenance of hatches.
  • the actuator mechanism according to the invention also features a simple construction that is cost-advantageous and reliable in operation.
  • FIG. 1A shows a cargo ship hatch equipped with an actuator mechanism according to the invention when the hatch panels are in their closed position
  • FIG. 1 B shows a side view of the situation illustrated in FIG. 1 A;
  • FIG. 2A shows the construction of FIG. 1 A, now the hatch panels driven into a slightly opened position
  • FIG. 2B shows in a side view the situation illustrated in FIG. 2A;
  • FIG. 3A shows the same situation as FIG. 2A, now all the hatch panels driven into their fully open position
  • FIG. 3B shows in a side view of the situation illustrated in FIG. 3A;
  • FIG. 4 shows a preferred embodiment of the actuator mechanism according to the invention.
  • FIG. 5 shows another preferred embodiment of the actuator mechanism according to the invention.
  • FIGS. 1A and 1 B therein is shown in its closed position a cargo ship hatch cover 1 equipped with an actuator mechanism according to the invention.
  • the hatch cover 1 comprises two hatch panels 1 ', 1". Attached to the hatch panels is a toothed rack 2 having a chiefly straight shape with the exception of its curvedly bent end.
  • the actuator mechanism additionally includes a support frame 4 having mounted thereon a toothed wheel 5 and a backing element 6 operating in contact with the toothed rack.
  • the backing element 6 can be any appropriate functional sliding element or rotary member such as an idler wheel (as shown in the diagrams, thereby allowing the element later in the text to be generally referred to as an idler wheel).
  • the support frame 4 in turn is connected by a pivot pin 7 to the ship hull.
  • the toothed rack 2 is adapted substantially to the center point of the front/rear edges of the hatch panel 1 ', 1 ", while the curved portion of the toothed rack is situated outside the rear edge of the toothed rack.
  • the term hatch panel rear edge refers to those edges of panels 1 ', 1 " that are farthest away from each other.
  • the front edges are those mating with each other (enclosing a seal therebetween) when the hatch cover 1 is in its fully closed position (FIGS. 1A, 1 B).
  • the actuator such as a hydraulic or electric motor, rotates the toothed wheel 5 when the rear surface 8 of the curved portion of toothed rack 2 is backed by the idler wheel 6 during the hatch panel opening action and, respectively, when the curved section of the toothed rack 2 is backed by the toothed wheel 5 during the hatch panel closing action.
  • the curved portion of the toothed rack imparts an effect increasing moving force imposed on the hatch panel 5-fold or up to 8-fold as compared with the moving force effected along the straight portion of the toothed rack that actuates the linear portion of the hatch panel movement.
  • the mechanism operates within its wedge-effect-enhanced region, i.e., along the curved portion of the toothed rack, the motion of the hatch panel 1 occurs at a respectively slower pace.
  • FIGS. 2A and 2B is shown a situation, wherein the hatch panels 1 ', 1" are driven slightly open, that is, apart from each other.
  • the support frame 4 has been rotated such that idler wheel 6 and toothed wheel 5 have traveled to the end of the curved portion of the toothed rack and are thus approaching the beginning of the straight portion of the toothed rack.
  • FIGS. 3A and 3B is shown the final situation in which the hatch panels are in their fully open position. Respectively, when closing the hatch panels, the mechanism operates in a reverse fashion.
  • the hatch cover actuator mechanism also locks the panels 1', 1 " of the hatch cover automatically without the need for separate locking actuators inasmuch as in its closed position (FIG. 1A) the toothed wheel 5 and the idler wheel 6 clamp the toothed rack at a point where the rack axis is perpendicular to the direction of movement of the hatch panel.
  • the use of a separate motor-driven brake or the like is also possible permitting the motion of toothed wheel 5 to be halted, whereby the hatch panel may also be locked in intermediate positions.
  • FIG. 4 is shown in an enlarged scale an actuator mechanism employed in the embodiment illustrated in FIGS. 1-3.
  • the actuator mechanism may alternatively be implemented in the fashion shown in FIG. 5 such that toothed wheel 5 and idler wheel 6 are mounted on a sledge 3 movable along crosswise aligned slide rails 9, whereby this arrangement replaces pivotal support frame 4 described in the above exemplary embodiment.
  • the location of the pivot points and the dimensions/position of the mechanism may be varied.

Abstract

An actuator mechanism of a cargo ship hatch is disclosed, the hatch comprising at least one hatch panel (1',1') movable between its open/closed positions, the hatch panel having connected thereto and aligned in a direction substantially parallel to the hatch panel movement a toothed rack (2) actuated by a toothed wheel (5) driven by an actuator means. The invention is implemented by way of providing at a least a portion of the toothed rack (2) with a curved shape and having mounted at a distance from the toothed wheel (5), substantially close to the toothed wheel, a backing element (6) adapted to keep the toothed rack (2) meshed with the toothed wheel (5).

Description

Actuator mechanism of cargo ship hatch
The present invention relates to an actuator mechanism of a cargo ship hatch, the hatch comprising at least one hatch panel movable between its open/- closed positions, the hatch panel having connected thereto and aligned in a direction substantially parallel to the hatch panel movement a toothed rack actuated by a toothed wheel driven by an actuator means.
Accordingly, the invention is particularly directed to opening/closing cargo ship hatch panels by an actuator means. High forces are required particularly during closing the hatch panels when the seal between the panels must be compressed and, respectively, during opening the hatch panels when the panels must be raised up into their driving position.
The hatch actuator machinery has conventionally been implemented using separate actuators for raising/lowering the hatch panels and, on the other hand, for actually driving the hatch panels.
The rise/close motion of the hatch panels may be implemented, e.g., by connecting a pair of a cylinder-actuated lever mechanisms between each adjacent pair of the hatch panels or using wheel lifting mechanisms, of which there are adapted eight wheels per each pair of hatch panels.
Furthermore, the drive movement of the hatch panels has generally been solved by means of, e.g., using a toothed rack/gear drive mechanism generating a low force and requiring a minimal drive power inasmuch as the hatch panels can travel on their wheels along a smooth pair of rails.
Locking of hatch panels has conventionally been implemented by means of separate manually-operated locks or locking pins that are needed in multiple numbers per each hatch panel. Among other problems, these prior-art embodiments have been hampered by needing separate devices for raising/lowering the hatch panels and, further, for driving them. Moreover, the ship's personnel may neglect the extra step of locking the panels, whereby the hatch panels may open inadvertently at sea causing damage to the cargo even up to full destruction due to the deteriorated weatherproofness of the panels. In the worst case, the opening of the hatch panels may jeopardize the safety of the entire ship.
It is an object of the present invention to provide a novel type of actuator mechanism for the hatch panels of cargo hatch covers that is free from the disadvantages described above. The actuator mechanism according to the invention is characterized in that at a least a portion of the toothed rack has a curved shape and that at a distance from the toothed wheel, substantially close to the toothed wheel, is mounted a backing element adapted to keep the toothed rack meshed with the toothed wheel.
A preferred embodiment of the actuator mechanism according to the invention is characterized in that the backing element is an idler wheel having its support shaft aligned substantially parallel to that of the toothed wheel and in that the backing element is mounted on the opposite side of the toothed rack in regard to the toothed wheel.
Another preferred embodiment of the actuator mechanism according to the invention is characterized in that the toothed wheel and the backing element are mounted on a support frame pivotally connected to the ship hull.
A still further another preferred embodiment of the actuator mechanism according to the invention is characterized in that the toothed rack is adapted at a point coinciding substantially with the center point of the hatch panel front/rear edges and that the curved section of the toothed rack is situated outside the rear edge of the hatch panel. Other preferred embodiments of the invention are disclosed in the annexed dependent claims 5 and 6.
The benefits of the invention include that all the drive functions (raise/lower and drive) can be handled by a single low-power actuator thus needing not more than one actuator per each hatch panel. Furthermore, by virtue of the invention, locking/unlocking the hatch does not need a separate workstep that could be neglected. The actuator mechanism according to the invention can be driven by either hydraulic or electrical means. Additionally, the invention simplifies the mounting and maintenance of hatches. The actuator mechanism according to the invention also features a simple construction that is cost-advantageous and reliable in operation.
In the following, the invention is examined in greater detail with the help of preferred exemplary embodiments by making reference to the appended drawings, in which:
FIG. 1A shows a cargo ship hatch equipped with an actuator mechanism according to the invention when the hatch panels are in their closed position;
FIG. 1 B shows a side view of the situation illustrated in FIG. 1 A;
FIG. 2A shows the construction of FIG. 1 A, now the hatch panels driven into a slightly opened position;
FIG. 2B shows in a side view the situation illustrated in FIG. 2A;
FIG. 3A shows the same situation as FIG. 2A, now all the hatch panels driven into their fully open position;
FIG. 3B shows in a side view of the situation illustrated in FIG. 3A; FIG. 4 shows a preferred embodiment of the actuator mechanism according to the invention; and
FIG. 5 shows another preferred embodiment of the actuator mechanism according to the invention.
Referring to FIGS. 1A and 1 B, therein is shown in its closed position a cargo ship hatch cover 1 equipped with an actuator mechanism according to the invention. The hatch cover 1 comprises two hatch panels 1 ', 1". Attached to the hatch panels is a toothed rack 2 having a chiefly straight shape with the exception of its curvedly bent end. The actuator mechanism additionally includes a support frame 4 having mounted thereon a toothed wheel 5 and a backing element 6 operating in contact with the toothed rack. The backing element 6 can be any appropriate functional sliding element or rotary member such as an idler wheel (as shown in the diagrams, thereby allowing the element later in the text to be generally referred to as an idler wheel). The support frame 4 in turn is connected by a pivot pin 7 to the ship hull. In this exemplary embodiment, the toothed rack 2 is adapted substantially to the center point of the front/rear edges of the hatch panel 1 ', 1 ", while the curved portion of the toothed rack is situated outside the rear edge of the toothed rack. In this context, the term hatch panel rear edge refers to those edges of panels 1 ', 1 " that are farthest away from each other. Respectively, the front edges are those mating with each other (enclosing a seal therebetween) when the hatch cover 1 is in its fully closed position (FIGS. 1A, 1 B).
The actuator, such as a hydraulic or electric motor, rotates the toothed wheel 5 when the rear surface 8 of the curved portion of toothed rack 2 is backed by the idler wheel 6 during the hatch panel opening action and, respectively, when the curved section of the toothed rack 2 is backed by the toothed wheel 5 during the hatch panel closing action. Resultingly, the curved portion of the toothed rack imparts an effect increasing moving force imposed on the hatch panel 5-fold or up to 8-fold as compared with the moving force effected along the straight portion of the toothed rack that actuates the linear portion of the hatch panel movement. The actual movement driven by toothed wheel 5 as it is rotated along toothed rack 2. When the mechanism operates within its wedge-effect-enhanced region, i.e., along the curved portion of the toothed rack, the motion of the hatch panel 1 occurs at a respectively slower pace.
In FIGS. 2A and 2B is shown a situation, wherein the hatch panels 1 ', 1" are driven slightly open, that is, apart from each other. At this stage, the support frame 4 has been rotated such that idler wheel 6 and toothed wheel 5 have traveled to the end of the curved portion of the toothed rack and are thus approaching the beginning of the straight portion of the toothed rack. In FIGS. 3A and 3B is shown the final situation in which the hatch panels are in their fully open position. Respectively, when closing the hatch panels, the mechanism operates in a reverse fashion.
The hatch cover actuator mechanism according to the invention also locks the panels 1', 1 " of the hatch cover automatically without the need for separate locking actuators inasmuch as in its closed position (FIG. 1A) the toothed wheel 5 and the idler wheel 6 clamp the toothed rack at a point where the rack axis is perpendicular to the direction of movement of the hatch panel. Obviously, the use of a separate motor-driven brake or the like is also possible permitting the motion of toothed wheel 5 to be halted, whereby the hatch panel may also be locked in intermediate positions.
In FIG. 4 is shown in an enlarged scale an actuator mechanism employed in the embodiment illustrated in FIGS. 1-3. However, the actuator mechanism may alternatively be implemented in the fashion shown in FIG. 5 such that toothed wheel 5 and idler wheel 6 are mounted on a sledge 3 movable along crosswise aligned slide rails 9, whereby this arrangement replaces pivotal support frame 4 described in the above exemplary embodiment. Also the location of the pivot points and the dimensions/position of the mechanism may be varied.
To a person versed in the art, it is obvious that the invention is not limited by the exemplary embodiments discussed above, but rather, may be varied within the scope and spirit of the appended claims.

Claims

What is claimed is:
1. An actuator mechanism of a cargo ship hatch (1), the hatch comprising at least one hatch panel (1', 1") movable between its open/closed positions, the hatch panel having connected thereto and aligned in a direction substantially parallel to the hatch panel movement a toothed rack (2) actuated by a toothed wheel (5) driven by an actuator means, characterized in that at a least a portion of the toothed rack (2) has a curved shape and that at a distance from the toothed wheel (5), substantially close to the toothed wheel, is mounted a backing element (6) adapted to keep the toothed rack (2) meshed with the toothed wheel (5).
2. The actuator mechanism of claim 1, characterized in that the backing element (6) is an idler wheel having its support shaft aligned substantially parallel to that of the toothed wheel (5) and in that the backing element (6) is mounted on the opposite side of the toothed rack (2) in regard to the toothed wheel (5).
3. The actuator mechanism of claim 1 or2, characterized in that the toothed wheel (5) and the backing element (6) are mounted on a support frame (4) pivotally connected to the ship hull.
4. The actuator mechanism of claim 2, characterized in that the toothed rack (2) is adapted at a point coinciding substantially with the center point of the front/rear edges of the hatch panel (1 ', 1 ") and that the curved section of the toothed rack is situated outside the rear edge of the hatch panel.
5. The actuator mechanism of claim 3, characterized in that the tangent of the toothed rack (2) at the end of its curved portion is at an angle of about 90° in regard to the axis of the straight portion of the toothed rack.
6. The actuator mechanism of claim 1 , characterized in that the toothed wheel (5) and the support frame (6) are mounted on a sledge (3) adapted movable in a direction perpendicular to the movement direction of the hatch panel (1', 1") and that the ship hull has mounted thereon slide rails (9) supporting the movement of the sledge in said perpendicular direction.
PCT/FI2007/050301 2006-06-20 2007-05-28 Actuator mechanism of cargo ship hatch WO2007147932A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020087030748A KR101451605B1 (en) 2006-06-20 2007-05-28 Actuator mechanism of cargo ship hatch

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20060604A FI120487B (en) 2006-06-20 2006-06-20 Cargo hatch access mechanism
FI20060604 2006-06-20

Publications (1)

Publication Number Publication Date
WO2007147932A1 true WO2007147932A1 (en) 2007-12-27

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PCT/FI2007/050301 WO2007147932A1 (en) 2006-06-20 2007-05-28 Actuator mechanism of cargo ship hatch

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JP (1) JP5143388B2 (en)
KR (1) KR101451605B1 (en)
CN (1) CN101092162B (en)
FI (1) FI120487B (en)
WO (1) WO2007147932A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015094689A1 (en) * 2013-12-17 2015-06-25 Palvannathan Ganesan Floating nuclear power reactor with self-cooling
WO2015147952A3 (en) * 2014-01-29 2015-11-12 Palvannanathan Ganesan Floating nuclear power reactor with a self-cooling containment structure and an emergency heat exchange system
WO2015171187A3 (en) * 2014-01-30 2016-02-18 Palvannanathan Ganesan Floating nuclear power reactor with a self-cooling multiple component containment structure

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI120487B (en) * 2006-06-20 2009-11-13 Macgregor Fin Oy Cargo hatch access mechanism
JP2009162650A (en) 2008-01-08 2009-07-23 Sony Corp Optical measuring device
FI121418B (en) * 2009-08-24 2010-11-15 Cargotec Finland Oy Operating mechanism for a cargo hatch in a cargo ship
KR101250843B1 (en) * 2011-12-15 2013-04-04 현대중공업 주식회사 Sliding hatch cover
CN104554629B (en) * 2014-12-10 2017-02-22 上海德瑞斯华海船用设备有限公司 Electric side-moving type hatch cover
CN106379490A (en) * 2016-11-16 2017-02-08 天津海运职业学院 Novel electric control type hatch cover mechanism of bulk freighter
CN110341879B (en) * 2019-06-18 2021-06-01 沪东中华造船(集团)有限公司 Protection tool for large-scale opening of ship
CN112282560A (en) * 2020-10-29 2021-01-29 广州云也科技有限公司 Marine hatch cover braking system

Citations (3)

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US3763814A (en) * 1970-09-23 1973-10-09 Hatchway Dynamics Ltd Ships hatches
DD135814A1 (en) * 1978-04-14 1979-05-30 Windelberg Hans Georg DEVICE FOR OPENING AND CLOSING LICENSES ON SHIPS
FI61154C (en) * 1974-09-26 1982-06-10 Trascandica Ag DRIVANORDNING VID LASTRUMSLUCKOR

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SE407831B (en) * 1977-09-01 1979-04-23 Palmaer Tore Georg CONTROL DEVICE FOR ROOF LINES AND THE LIKE
US5088435A (en) * 1989-09-27 1992-02-18 Outboard Marine Corporation Recreational boat with improved companionway hatch
JP4264424B2 (en) * 2005-04-13 2009-05-20 辻産業株式会社 Hatch cover device
FI120487B (en) * 2006-06-20 2009-11-13 Macgregor Fin Oy Cargo hatch access mechanism

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
US3763814A (en) * 1970-09-23 1973-10-09 Hatchway Dynamics Ltd Ships hatches
FI61154C (en) * 1974-09-26 1982-06-10 Trascandica Ag DRIVANORDNING VID LASTRUMSLUCKOR
DD135814A1 (en) * 1978-04-14 1979-05-30 Windelberg Hans Georg DEVICE FOR OPENING AND CLOSING LICENSES ON SHIPS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015094689A1 (en) * 2013-12-17 2015-06-25 Palvannathan Ganesan Floating nuclear power reactor with self-cooling
CN106170439A (en) * 2013-12-17 2016-11-30 帕尔文纳纳桑·加内森 Possesses self cooled floating type power producer
WO2015147952A3 (en) * 2014-01-29 2015-11-12 Palvannanathan Ganesan Floating nuclear power reactor with a self-cooling containment structure and an emergency heat exchange system
WO2015171187A3 (en) * 2014-01-30 2016-02-18 Palvannanathan Ganesan Floating nuclear power reactor with a self-cooling multiple component containment structure

Also Published As

Publication number Publication date
JP5143388B2 (en) 2013-02-13
KR101451605B1 (en) 2014-10-16
JP2008001338A (en) 2008-01-10
FI120487B (en) 2009-11-13
KR20090018824A (en) 2009-02-23
CN101092162B (en) 2011-03-02
FI20060604A0 (en) 2006-06-20
CN101092162A (en) 2007-12-26
FI20060604A (en) 2007-12-21

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