WO1981001824A1 - A hatch cover moving system - Google Patents

A hatch cover moving system Download PDF

Info

Publication number
WO1981001824A1
WO1981001824A1 PCT/NO1980/000043 NO8000043W WO8101824A1 WO 1981001824 A1 WO1981001824 A1 WO 1981001824A1 NO 8000043 W NO8000043 W NO 8000043W WO 8101824 A1 WO8101824 A1 WO 8101824A1
Authority
WO
WIPO (PCT)
Prior art keywords
cover
section
lever
hatch
edge
Prior art date
Application number
PCT/NO1980/000043
Other languages
French (fr)
Inventor
P Hoever
Original Assignee
Kvaerner Brug As
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 Kvaerner Brug As filed Critical Kvaerner Brug As
Priority to DE19803050172 priority Critical patent/DE3050172A1/en
Priority to BR8008988A priority patent/BR8008988A/en
Publication of WO1981001824A1 publication Critical patent/WO1981001824A1/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

Definitions

  • a hatch cover moving system is
  • the present invention relates to a system for the movement of a cover, or a section of a cover to/from a position in which the cover or section covers a hatch, such as aboard a vessel from/to a horizontal parking position outside of the hatch coaming.
  • Such hatch covers usually are called “side rolling", as the same, in the conventional systems are provided with a pair of rollers or wheels and are caused to perform hori ⁇ zontal movements along the hatch coaming and horizontal rails, ramps or supports arranged in continuation of the hatch coaming in the athwartship direction.
  • the movements of the cover or the individual sections which together form the cover usually are effected by mechanical means, such as racks, chain or wire drives or hinged levers which are con ⁇ trolled by means of jacks.
  • the present invention relates to a system which involves an essential simplification as compared with the known systems and that the inconveniences mentioned are avoided thereby that the horizontal ramps, and consequently the maintenance of the same are dispensed with.
  • this is achieved by the provision, between that edge of the coyer or section which is positi ⁇ oned rearwardly/forwardly during the movements of the cover or section and a fixed point outside of the hatch coaming, of at least one, lever which is pivotably - ⁇ ounted at both ends and adapted to swing about the fixed point in a verr tical plane in the direction of movement of the cover or section, thereby moving and supporting the said edge of the cover or section.
  • the lever Due to the fact that the lever is continuously supporting the cover or section at the edge at which the lever is pi ⁇ votably mounted, only one pair of rollers or wheels is needed on the cover or section, and when the hatch is cove ⁇ red, free deck space is available outside of the hatch coa ⁇ ming, apart from the means which forms the fixed pivot for the lever.
  • the cover or section is continuously under the control of the pivotable lever, even in the closing posi ⁇ tion on the hatch coaming, so that there is no need for particular means, such as brakes or locks on the rollers or wheels.
  • the swinging movements of the lever between the fixed point and the edge of the cover or section may be effected by means of a pair of volontary, known drive systems, such as hydraulic jacks, as in the known systems.
  • a pai of drive systems is due to the fact that when a hydraulic jack is used, this is during the swinging movement of the lever passing through a dead center in which it is not, in itself, capable of continuing its own swinging movement, as the lever will then extend in the direction of length of the jack.
  • Each of the two mechanisms in a pair convenientl is connected to a fixed point situated at a distance from each other in the direction of movement of the cover or section.
  • the two mechanisms may be so interconnec ⁇ ted that one is capable of supplying swinging force to the other.
  • it may be convenient to introduce a certain longitu ⁇ dinal mobility of the lever. Conveniently, this may be obtained by introducing a double pivot in the pivot mecha ⁇ nism between the lever and the edge of the cover or section, in order to permit a certain yielding in the pivot connec ⁇ tion.
  • Figure 1 is a view of the system as seen in the fore and aft direction of the vessel, in a first embodiment.
  • Figure 2 is a view of the system as seen in the fore and aft direction of the vessel, in a second embodiment.
  • Figure 3 is a view of the pivotable lever in vertical posi ⁇ tion, as seen in the athwartship direction.
  • FIG. 4 is a view of a pivot mechanism between the pivotable lever and the edge of a cover or a section.
  • 1 is a deck aboard a vessel, while 2 is the coaming of a hatch which is adapted to be covered by a cover 3 provided with a set of rollers 4 which may roll on the hatch coaming 2 and in open condition of the cover be supported on an abutment 5 which is positioned in prolonga ⁇ tion of the runway on the coaming 2, so that the cover 3 may be parked completely outside of the coaming 2.
  • a lever 8 is pivotably mounted at 7 in a frame 6, the other end of the lever being pivotably mounted at 9 at the free edge of the cover 3.
  • the lever 8 is under the influ ⁇ ence of two hydraulic jacks 10 and 11, each of which is pivotably mounted in the frame 6, Fig.
  • each jack is pivotably connected to the lever 8 at 10b and lib, respectively at a distance from the pivot axis 7 of the lever 8 in the frame 6 and at a distance from the longitudinal line 8a of the lever 8.
  • An abutment cushion 13 is also provided in the frame 6, on which the lever 8 may rest when in position for fully with ⁇ drawn parked cover 3 , as shown in Fig. 1.
  • FIG 2 illustrates an embodiment in which the two jacks 10 and 11 are interconnected, the jack 10 being inserted between a point 12 on the jack 11 and a fixed point at a distance from the pivot axis 11a of the same.
  • the jack 10 is adapted to supply a pushing and pulling force, respecti ⁇ vely to the jack 11, in particular when this, during its swinging movements is passing through the position in which the longitudinal line 8a of the lever 8 coincides with the longitudinal line of the jack 11 and the jack consequently is not capable of applying any swinging force to the lever 8.
  • Figure 3 illustrates the bifurcated construction of the lever 8 at the end which is pivotably mounted in the frame 6, so that the lever 8 and the jacks 10 and 11 do not col ⁇ lide during their swinging movements, thereby also increa ⁇ sing the stability of the support of the cover 3.
  • Figure 4 illustrates the possibility that the pivot connec ⁇ tion 9 between the lever 8 and the edge of the cover or sec ⁇ tion 3 comprises a link 14, the lever 8 being pivotably
  • Fig. 5 illustrates a second machanism which provides free ⁇ dom of movement between the lever 8 and the cover or section 3.
  • a key-hole shaped slot 16 is provided in a projection 15 on the cover or section 3 , in which the pivot of the connection 9 may be introduced and locked against expulsion by means of a stopper 17.
  • the pushing force from the jack 10 against the lever 8 is maintened until the direction of the jack 10 extends through the pivot point 9 of the lever 8 on the cover 3 , so that the jack 10 no longer is capable of applying swinging force to the lever, whereupon the jack 11 is energized so that the lever 8, and therewith the cover or section 3 is pulled further on to the left and also brakes the move ⁇ ments which are caused by the weight of the cover or sec ⁇ tion, until the latter reaches its horizontal position on the hatch coaming, indicated by a dotted line to the left in Fig. 1.
  • Figure 2 illustrates a system in which the two jacks 10 and 11 are so positioned and interconnected that the jack 10 is capable of exerting an approximately horizontal pull and push force , respectively on the j ack 11 when the latter is in its dead center position relatively to the lever 8 .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Closures For Containers (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
  • Soil Working Implements (AREA)
  • Helmets And Other Head Coverings (AREA)

Abstract

A side rolling system for the movement of a cover (3), or a section of a cover to/from a position in which the cover or section covers a hatch, such as aboard a vessel from/to a horizontal parking position outside of the hatch coaming. According to the invention, there is provided between that edge of the cover or section (3) which is positioned rearwardly/forwardly during the movements of the cover or section and a fixed point (7) outside of the hatch coaming (2), at least one lever (8) which is pivotably mounted at both ends and adapted to swing about the fixed point (7) in a vertical plane in the direction of movement of the cover or section (3),thereby moving and supporting the said edge of the cover or section (3), whereby undesirable obstructions on deck is avoided.

Description

A hatch cover moving system.
The present invention relates to a system for the movement of a cover, or a section of a cover to/from a position in which the cover or section covers a hatch, such as aboard a vessel from/to a horizontal parking position outside of the hatch coaming.
Such hatch covers usually are called "side rolling", as the same, in the conventional systems are provided with a pair of rollers or wheels and are caused to perform hori¬ zontal movements along the hatch coaming and horizontal rails, ramps or supports arranged in continuation of the hatch coaming in the athwartship direction. The movements of the cover or the individual sections which together form the cover, usually are effected by mechanical means, such as racks, chain or wire drives or hinged levers which are con^ trolled by means of jacks.
Common to the known systems is the need for the ramps refer¬ red to, which extend above deck outwardly from the hatch coaming and which, accordingly, are space consuming and ob¬ struct traffic on the deck, and which, in addition, are interfering with the mounting, operation and maintenance of tubing and other conventional equipment on deck.
The present invention relates to a system which involves an essential simplification as compared with the known systems and that the inconveniences mentioned are avoided thereby that the horizontal ramps, and consequently the maintenance of the same are dispensed with.
According to the invention, this is achieved by the provision, between that edge of the coyer or section which is positi¬ oned rearwardly/forwardly during the movements of the cover or section and a fixed point outside of the hatch coaming, of at least one, lever which is pivotably -αounted at both ends and adapted to swing about the fixed point in a verr tical plane in the direction of movement of the cover or section, thereby moving and supporting the said edge of the cover or section.
Due to the fact that the lever is continuously supporting the cover or section at the edge at which the lever is pi¬ votably mounted, only one pair of rollers or wheels is needed on the cover or section, and when the hatch is cove¬ red, free deck space is available outside of the hatch coa¬ ming, apart from the means which forms the fixed pivot for the lever. The cover or section is continuously under the control of the pivotable lever, even in the closing posi¬ tion on the hatch coaming, so that there is no need for particular means, such as brakes or locks on the rollers or wheels.
The swinging movements of the lever between the fixed point and the edge of the cover or section may be effected by means of a pair of volontary, known drive systems, such as hydraulic jacks, as in the known systems. The use of a pai of drive systems is due to the fact that when a hydraulic jack is used, this is during the swinging movement of the lever passing through a dead center in which it is not, in itself, capable of continuing its own swinging movement, as the lever will then extend in the direction of length of the jack. Each of the two mechanisms in a pair convenientl is connected to a fixed point situated at a distance from each other in the direction of movement of the cover or section. Hereby the two mechanisms may be so interconnec¬ ted that one is capable of supplying swinging force to the other. In order to comply with possible changes in shape of the vessel due to varying load conditions or movements in the sea, it may be convenient to introduce a certain longitu¬ dinal mobility of the lever. Conveniently, this may be obtained by introducing a double pivot in the pivot mecha¬ nism between the lever and the edge of the cover or section, in order to permit a certain yielding in the pivot connec¬ tion.
Further features of the invention will appear from the claims and the following description, with reference to the accompanying drawings which illustrate two embodiments of the system according to the invention as applied aboard a vessel.
Figure 1 is a view of the system as seen in the fore and aft direction of the vessel, in a first embodiment.
Figure 2 is a view of the system as seen in the fore and aft direction of the vessel, in a second embodiment.
Figure 3 is a view of the pivotable lever in vertical posi¬ tion, as seen in the athwartship direction.
Each of the Figures 4 and 5 is a view of a pivot mechanism between the pivotable lever and the edge of a cover or a section.
In the drawings, 1 is a deck aboard a vessel, while 2 is the coaming of a hatch which is adapted to be covered by a cover 3 provided with a set of rollers 4 which may roll on the hatch coaming 2 and in open condition of the cover be supported on an abutment 5 which is positioned in prolonga¬ tion of the runway on the coaming 2, so that the cover 3 may be parked completely outside of the coaming 2. A lever 8 is pivotably mounted at 7 in a frame 6, the other end of the lever being pivotably mounted at 9 at the free edge of the cover 3. The lever 8 is under the influ¬ ence of two hydraulic jacks 10 and 11, each of which is pivotably mounted in the frame 6, Fig. 1, at points 10a and 11a, respectively, such points being spaced relatively to each other in the direction of movement of the cover 3. The other end of each jack is pivotably connected to the lever 8 at 10b and lib, respectively at a distance from the pivot axis 7 of the lever 8 in the frame 6 and at a distance from the longitudinal line 8a of the lever 8. An abutment cushion 13 is also provided in the frame 6, on which the lever 8 may rest when in position for fully with¬ drawn parked cover 3 , as shown in Fig. 1.
Figure 2 illustrates an embodiment in which the two jacks 10 and 11 are interconnected, the jack 10 being inserted between a point 12 on the jack 11 and a fixed point at a distance from the pivot axis 11a of the same. The jack 10 is adapted to supply a pushing and pulling force, respecti¬ vely to the jack 11, in particular when this, during its swinging movements is passing through the position in which the longitudinal line 8a of the lever 8 coincides with the longitudinal line of the jack 11 and the jack consequently is not capable of applying any swinging force to the lever 8.
Figure 3 illustrates the bifurcated construction of the lever 8 at the end which is pivotably mounted in the frame 6, so that the lever 8 and the jacks 10 and 11 do not col¬ lide during their swinging movements, thereby also increa¬ sing the stability of the support of the cover 3.
Figure 4 illustrates the possibility that the pivot connec¬ tion 9 between the lever 8 and the edge of the cover or sec¬ tion 3 comprises a link 14, the lever 8 being pivotably
OMPI mounted at one end of the link 14 and the latter pivotably mounted on a projection 15 on the cover 3. Hereby a cer¬ tain freedom of movement is introduced between the lever 8 and the cover or section 3 at changes in the vessel shape.
Fig. 5 illustrates a second machanism which provides free¬ dom of movement between the lever 8 and the cover or section 3. In this mechanism a key-hole shaped slot 16 is provided in a projection 15 on the cover or section 3 , in which the pivot of the connection 9 may be introduced and locked against expulsion by means of a stopper 17.
When a cover or a. section 3 is to be brought from the par¬ king position -.shown in Fig.l, in which position the hatch is not covered to a position with covered hatch, the jack 10 is first energized, so that it applies a pressure against the lever 8 which thereby swings about the point 7. There¬ by the edge of the cover or section 3 is lifted at the same time as the same ' is pushed as a whole to the left in the drawing, the rollers 4 rolling along the hatch coaming 2. The pushing force from the jack 10 against the lever 8 is maintened until the direction of the jack 10 extends through the pivot point 9 of the lever 8 on the cover 3 , so that the jack 10 no longer is capable of applying swinging force to the lever, whereupon the jack 11 is energized so that the lever 8, and therewith the cover or section 3 is pulled further on to the left and also brakes the move¬ ments which are caused by the weight of the cover or sec¬ tion, until the latter reaches its horizontal position on the hatch coaming, indicated by a dotted line to the left in Fig. 1.
Figure 2 illustrates a system in which the two jacks 10 and 11 are so positioned and interconnected that the jack 10 is capable of exerting an approximately horizontal pull and push force , respectively on the j ack 11 when the latter is in its dead center position relatively to the lever 8 .

Claims

CLAIMS .
1. A system for the movement of a cover or a cover sec¬ tion of a hatch, such as aboard a vessel to/from a covering position on the hatch from/to a horizontal parking position outside of the hatch coaming, c h a -r a c t e r i s e d i n the provision, between that edge of the cover or section (3) which is positioned rear- wardly/forwardly during the movements of the cover or sec¬ tion and a fixed point (7) outside of the hatch coaming,
(2) of at least one lever (8) which is pivotably mounted at both ends and adapted to swing about the fixed point
(7) in a vertical plane in the direction of movement of the cover or section (3) thereby moving and supporting the said edge of the cover or section (3) .
2. A system claimed in claim 1, c h a r a c t e r i s e d i n that the movements of the pivotable lever (8) is controlled by a pair of pivotable jacks (10, 11) , such as hydraulic piston and cylinder mechanisms, each connected with a fixed point (10a and 11a, respectively) situated at a distance from each other in the direction of movement of the cover or section (3) .
3. A system as claimed in claim 2, c h a r a c t e r i s e d i n that the two jacks (10, 11) are so interconnected that one jack (10) is capable of applying a swinging force on the other (11) .
OI.IFI - WIPO ^
4. A system as claimed in any of the claims 1 to 3 , c h a r a c t e r i s e d i n that a frame (6) on the deck of the vessel, which provides the fixed point (7) of the pivotable lever (8) is provided with a cushion (13) on which the pivotable lever (8) may be supported when the cover or section (3) is in horizontal parking position.
5. A system as claimed in any of the claims 1 to 4, c h a r a c t e r i s e d i n that the pivot connection (9) between the pivotable lever (8) and the edge of the cover or section (3) comprises a link (14) .
6. A system as claimed in any of the claims 1 to 4, c h a r a c t e r i s e d i n that the connection be¬ tween the pivotable lever (8) and the edge of the cover or section (3) comprises a pin (9) having a limited movement possibility in a slot (16) ,
o:.-?ι
PCT/NO1980/000043 1979-12-19 1980-12-18 A hatch cover moving system WO1981001824A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19803050172 DE3050172A1 (en) 1979-12-19 1980-12-18 A HATCH COVER MOVING SYSTEM
BR8008988A BR8008988A (en) 1979-12-19 1980-12-18 HAT COVER MOVING SYSTEM

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO794154A NO145715C (en) 1979-12-19 1979-12-19 DEVICE FOR MOVING A CLOSE COVER
NO794154 1979-12-19

Publications (1)

Publication Number Publication Date
WO1981001824A1 true WO1981001824A1 (en) 1981-07-09

Family

ID=19885223

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1980/000043 WO1981001824A1 (en) 1979-12-19 1980-12-18 A hatch cover moving system

Country Status (5)

Country Link
JP (1) JPS56501757A (en)
BR (1) BR8008988A (en)
GB (1) GB2077667B (en)
NO (1) NO145715C (en)
WO (1) WO1981001824A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5295673A (en) * 1990-11-29 1994-03-22 Fuji Photo Film Co., Ltd. Method of and device for controlling feeding of sheets by detecting multiple sheet pick up
DE4403406C2 (en) * 1994-02-04 2003-09-18 Nordseewerke Gmbh Sliding door for closing a preferably rectangular opening in the outer skin of a seagoing ship
CN101618754B (en) * 2009-08-17 2011-01-05 陈桂晖 Ship hatchcover opening device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101204596B1 (en) * 2011-02-23 2012-11-23 김동규 Opening device of hatch cover in cargo ship

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB147367A (en) * 1919-09-01 1920-07-22 Doroteo Vincente Elordieta Improvements in hatch covers
DE1073893B (en) * 1960-01-21 G. M. E. Corporation, Chicago, 111. (V. St. A.) Hatch locking device
DE1194286B (en) * 1960-06-30 1965-06-03 Theodore Guthrie Device for opening and closing the cover of a hatch, in particular tank hatches on tankers
FR2032561A5 (en) * 1969-04-30 1970-11-27 Rosendahl Arvid
NO126467B (en) * 1969-01-14 1973-02-12 Kvaerner Brug As

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073893B (en) * 1960-01-21 G. M. E. Corporation, Chicago, 111. (V. St. A.) Hatch locking device
GB147367A (en) * 1919-09-01 1920-07-22 Doroteo Vincente Elordieta Improvements in hatch covers
DE1194286B (en) * 1960-06-30 1965-06-03 Theodore Guthrie Device for opening and closing the cover of a hatch, in particular tank hatches on tankers
NO126467B (en) * 1969-01-14 1973-02-12 Kvaerner Brug As
FR2032561A5 (en) * 1969-04-30 1970-11-27 Rosendahl Arvid

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5295673A (en) * 1990-11-29 1994-03-22 Fuji Photo Film Co., Ltd. Method of and device for controlling feeding of sheets by detecting multiple sheet pick up
DE4403406C2 (en) * 1994-02-04 2003-09-18 Nordseewerke Gmbh Sliding door for closing a preferably rectangular opening in the outer skin of a seagoing ship
CN101618754B (en) * 2009-08-17 2011-01-05 陈桂晖 Ship hatchcover opening device

Also Published As

Publication number Publication date
GB2077667A (en) 1981-12-23
JPS56501757A (en) 1981-12-03
NO794154L (en) 1981-06-22
NO145715C (en) 1982-05-26
BR8008988A (en) 1981-10-20
NO145715B (en) 1982-02-08
GB2077667B (en) 1984-01-11

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