EP1137570A1 - Support and seal arrangement for the hatch cover of a cargo ship - Google Patents

Support and seal arrangement for the hatch cover of a cargo ship

Info

Publication number
EP1137570A1
EP1137570A1 EP99958217A EP99958217A EP1137570A1 EP 1137570 A1 EP1137570 A1 EP 1137570A1 EP 99958217 A EP99958217 A EP 99958217A EP 99958217 A EP99958217 A EP 99958217A EP 1137570 A1 EP1137570 A1 EP 1137570A1
Authority
EP
European Patent Office
Prior art keywords
support
hatch cover
seal
hatch
support pad
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP99958217A
Other languages
German (de)
French (fr)
Other versions
EP1137570B1 (en
Inventor
Mika Vanhanen
Hannu VÄHÄMAA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MacGregor Fin Oy
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
Publication of EP1137570A1 publication Critical patent/EP1137570A1/en
Application granted granted Critical
Publication of EP1137570B1 publication Critical patent/EP1137570B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • B63B19/26—Gaskets; Draining means

Definitions

  • the present invention relates to a support and seal arrangement applicable to the hatch cover of a cargo ship for supporting an essentially rectangular hatch cover and a payload cargo possibly resting thereon and sealing the hatch cover against the edge of the hatch coaming, whereby said arrangement comprises at least one support pad located substantially close to the outer edges of the hatch cover and an elongated gasket seal running close to the outer edges of the hatch cover.
  • the support pad serves to bear the weight of the hatch cover and a payload cargo possibly placed thereon so that the cover can undergo a movement with regard to the edge of the coaming (in order to cope with the deformations of the ship's hull at sea). Additionally, the support pad serves to keep a constant distance between the cover and the hatch coaming irrespective of the superimposed load, whereby an optimal function of the cover seal means is attained.
  • the arrangement according to the invention is characterized in that the support pads are connected in a watertight manner to the encircling sealing gasket. Therefore, no separate support members attached to the outer edge of the hatch cover and projecting outwardly therefrom are required, thus reducing the external dimensions of the hatch cover with regard to the size of prior-art constructions.
  • the structure of hatch covers also becomes lighter and simpler to manufacture. Furthermore, the new design makes hatch covers easier to mount in place.
  • a preferred embodiment of the invention is characterized in that the support pads are placed at least partially embedded in the gasket seals of the cover.
  • Another preferred embodiment of the invention is characterized in that the gasket seal with the embedded support pads is affixed to the hatch cover and that the bottom surface of the support pad in an unmounted hatch cover is verti- cally situated a level higher than the gasket bottom surface.
  • a further another preferred embodiment of the invention is characterized in that the bottom surface of the support pad in a mounted hatch cover is vertically situated at a substantially equal level with the gasket bottom surface resting against the top surface of the hatch coaming.
  • a still further another preferred embodiment of the invention is characterized in that the bottom surface of the support pad is made of a sealing material. This arrangement provides a continuous seal about the entire hatch cover since the support pad also acts as a part of the gasket seal. Moreover, the support/seal assembly can be made entirely resistant to corrosion.
  • a still another preferred embodiment of the invention is characterized in that the support pad with the portion of seal material attached thereto forms a complete, integrated block that can be affixed in place, particularly to a hatch cover, by means of fastening elements provided on the support pad, such as threaded pin bolts and compatible nuts.
  • Fig. 1 is a perspective view of a hatch cover equipped with a conventional support/seal arrangement and mounted on the edge of a ship's hatch coaming;
  • Fig. 2 is a perspective view of a detail of a conventional hatch cover showing both the support member and the rubber seal thereof;
  • Fig. 3 is a perspective view of a hatch cover equipped with a support pad-seal arrangement according to the invention and mounted on the edge of a ship's hatch coaming;
  • Fig. 4 is a perspective view of a detail of a hatch cover according to the invention showing both the support pad and the rubber seal arrangement thereof;
  • Fig. 5 is a side view of the integrated support pad-seal block according to the invention.
  • Fig. 6 is a sectional end view of the support pad-seal block structure of Fig. 5;
  • Fig. 7 is a side view of the support pad-seal block of Fig. 5 affixed in place and serving in a placed hatch cover;
  • Fig. 8 is an end view of the same support pad-seal block as that shown in Fig. 7;
  • Fig. 9 is a side view of the same support pad-seal block as that shown in Fig. 7 but now having the hatch lifted into a nonworking position;
  • Fig. 10 is an end view of the support pad-seal block of Fig. 9.
  • a state-of-the-art support/seal arrangement for a cargo ship hatch cover 1 As known, a hatch cover is required to close the hatch of a cargo space, whose details are omitted from the diagrams. Conventionally, the outer edges of the hatch cover 1 are provided with support members 2 whose load-bearing surfaces rest on a hatch coaming 3 when the cover is seated on the hatch. While the number of support members may vary, the exemplifying construction of Fig. 1 has two members on each side of the cover. As is evident from Fig.
  • a groove made to the underside edge of the hatch cover has an elongated rubber gasket seal 4 affixed thereto so as to encircle about the perimeter of the entire cover and to seal the cover in watertight manner against the edge of the hatch coaming 3.
  • Fig. 3 a support/seal arrangement according to the invention for use in a hatch cover.
  • Fig. 4 shows the major length of the gasket seal 4 to have a cross section essentially similar to that of conventional constructions.
  • the novel feature of the present invention is to have support pads 5 integrated into the cross section of the encircling gasket seal 4.
  • the number of support pads can be equal to that used in conventional constructions. However, the number may be varied according to the structure of the hatch cover and the load to be carried by the hatch structure.
  • the characterizing feature of the invention is that the support pads are not located projecting outwardly from the outer edge of the hatch cover, but instead, are integrated into the cross section of the gasket seal.
  • the structure of the support pads themselves can be varied as required.
  • at least a portion of the support pad is made from a metal.
  • the underside of the support pad has a sealing material attached thereto, whereby a continuous seal is provided about the entire perimeter of the hatch cover.
  • the gasket seal 4 is affixed in the same manner as in cited prior-art construction into a groove made to the edge of the hatch cover 1 as shown in Fig. 4.
  • the underside of the hatch cover outer perimeter is provided with recesses 6 at the support pads so that a small lateral displacement of the support pads is possible at heavy seas.
  • the support pad may be made slidable and/or elasti- cally deformable to cope with such movements.
  • the rubber gasket seal 4 may be implemented using conventional seal constructions, whereby the seal may be slidable on the coaming or compressible against a shaped metallic backing surface.
  • Fig. 5 is shown a possible embodiment for an easy-to-mount gasket seal block 4 with its integrated support pad.
  • the support pad-seal block acts as a seal element of a predetermined length that can be readily affixed in a groove made to the hatch cover 1.
  • the seal proper extends in a conventional manner to both sides of the support pad-seal block.
  • the support pad-seal block is provided with two threaded pin bolts 7 that are inserted via compatible holes made to the bottom of the hatch cover edge groove and are then locked in place by means of nuts 8 (Figs. 7 and 8).
  • Figs. 9 and 10 the hatch cover is shown in a nonworking position, in which the support pad-seal block 4 bears no load. This is the situation when, e.g., the hatch cover is elevated off its place by means of a lift. Then, the bottom surface of the support pad 5 is vertically situated at a level higher than the underside of the gasket seal. In Figs. 7 and 8 is shown the opposite situation, namely, the working position in which the hatch cover is mounted in place. Herein, the bottom surface of the support pad 5 is vertically situated at a substantially equal level with bottom surface of the gasket seal 4 resting against the top surface of the hatch coaming.
  • the support pads assures that the pressure imposed on the encircling seal stays constant at any point about the hatch cover perimeter, whereby an optimal seal performance is attained.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Gasket Seals (AREA)
  • Seal Device For Vehicle (AREA)

Abstract

The present invention relates to a support and seal arrangement applicable to the hatch cover (1) of a cargo ship for supporting an essentially rectangular hatch cover (1) and a payload cargo possibly resting thereon and sealing the hatch cover against the edge of the hatch coaming (3), whereby said arrangement comprises at least one support pad (2, 5) located substantially close to the outer edges of the hatch cover and an elongated gasket seal (4) running close to the outer edges of the hatch cover. The invention is implemented by connecting said support pads in a watertight manner to said gasket seal (4).

Description

Support and seal arrangement for the hatch cover of a cargo ship
The present invention relates to a support and seal arrangement applicable to the hatch cover of a cargo ship for supporting an essentially rectangular hatch cover and a payload cargo possibly resting thereon and sealing the hatch cover against the edge of the hatch coaming, whereby said arrangement comprises at least one support pad located substantially close to the outer edges of the hatch cover and an elongated gasket seal running close to the outer edges of the hatch cover.
The support pad serves to bear the weight of the hatch cover and a payload cargo possibly placed thereon so that the cover can undergo a movement with regard to the edge of the coaming (in order to cope with the deformations of the ship's hull at sea). Additionally, the support pad serves to keep a constant distance between the cover and the hatch coaming irrespective of the superimposed load, whereby an optimal function of the cover seal means is attained.
To achieve these objectives, from the prior art there is known, among others, such an arrangement in which the outer edge of the hatch cover has support pads affixed thereto, e.g., two support pads per each edge of the cover, and the lower edge of the cover has an elongated rubber gasket adapted to its lower edge so as to run about its perimeter in a manner sealing the cover against the edge of the hatch coaming. This construction facilitates supporting and sealing the cover so that the cover can move with regard to the edge of the hatch coaming as is necessary to cope with the ship's deformation at high seas. However, this embodiment is hampered by its clumsy size resulting from the large dimensions required by the projecting support members. Simultaneously, also the edges of the hatch coaming must be extended in a compatible manner. Also the hatch cover construction of this prior-art embodiment becomes rather unwieldy due to the separate backing brackets placed under the support members. Moreover, the placement of the hatch covers, particularly their alignment on the coamings is awkward and time-consuming.
It is an object of the present invention to provide an entirely novel support and sealing arrangement for a cargo ship hatch cover free from the above- described drawbacks. The arrangement according to the invention is characterized in that the support pads are connected in a watertight manner to the encircling sealing gasket. Therefore, no separate support members attached to the outer edge of the hatch cover and projecting outwardly therefrom are required, thus reducing the external dimensions of the hatch cover with regard to the size of prior-art constructions. The structure of hatch covers also becomes lighter and simpler to manufacture. Furthermore, the new design makes hatch covers easier to mount in place.
A preferred embodiment of the invention is characterized in that the support pads are placed at least partially embedded in the gasket seals of the cover.
Another preferred embodiment of the invention is characterized in that the gasket seal with the embedded support pads is affixed to the hatch cover and that the bottom surface of the support pad in an unmounted hatch cover is verti- cally situated a level higher than the gasket bottom surface.
A further another preferred embodiment of the invention is characterized in that the bottom surface of the support pad in a mounted hatch cover is vertically situated at a substantially equal level with the gasket bottom surface resting against the top surface of the hatch coaming.
A still further another preferred embodiment of the invention is characterized in that the bottom surface of the support pad is made of a sealing material. This arrangement provides a continuous seal about the entire hatch cover since the support pad also acts as a part of the gasket seal. Moreover, the support/seal assembly can be made entirely resistant to corrosion. A still another preferred embodiment of the invention is characterized in that the support pad with the portion of seal material attached thereto forms a complete, integrated block that can be affixed in place, particularly to a hatch cover, by means of fastening elements provided on the support pad, such as threaded pin bolts and compatible nuts.
In the following, the invention is examined in greater detail with reference to a preferred embodiment illustrated in the appended drawings, in which:
Fig. 1 is a perspective view of a hatch cover equipped with a conventional support/seal arrangement and mounted on the edge of a ship's hatch coaming;
Fig. 2 is a perspective view of a detail of a conventional hatch cover showing both the support member and the rubber seal thereof;
Fig. 3 is a perspective view of a hatch cover equipped with a support pad-seal arrangement according to the invention and mounted on the edge of a ship's hatch coaming;
Fig. 4 is a perspective view of a detail of a hatch cover according to the invention showing both the support pad and the rubber seal arrangement thereof;
Fig. 5 is a side view of the integrated support pad-seal block according to the invention;
Fig. 6 is a sectional end view of the support pad-seal block structure of Fig. 5;
Fig. 7 is a side view of the support pad-seal block of Fig. 5 affixed in place and serving in a placed hatch cover; Fig. 8 is an end view of the same support pad-seal block as that shown in Fig. 7;
Fig. 9 is a side view of the same support pad-seal block as that shown in Fig. 7 but now having the hatch lifted into a nonworking position; and
Fig. 10 is an end view of the support pad-seal block of Fig. 9.
Referring to Fig. 1 , therein is shown a state-of-the-art support/seal arrangement for a cargo ship hatch cover 1. As known, a hatch cover is required to close the hatch of a cargo space, whose details are omitted from the diagrams. Conventionally, the outer edges of the hatch cover 1 are provided with support members 2 whose load-bearing surfaces rest on a hatch coaming 3 when the cover is seated on the hatch. While the number of support members may vary, the exemplifying construction of Fig. 1 has two members on each side of the cover. As is evident from Fig. 2, a groove made to the underside edge of the hatch cover has an elongated rubber gasket seal 4 affixed thereto so as to encircle about the perimeter of the entire cover and to seal the cover in watertight manner against the edge of the hatch coaming 3. The drawbacks of this construction are evident from the text above.
In Fig. 3 is shown a support/seal arrangement according to the invention for use in a hatch cover. As can be seen from the diagram, there are no projecting, separate support members. Fig. 4 shows the major length of the gasket seal 4 to have a cross section essentially similar to that of conventional constructions. The novel feature of the present invention is to have support pads 5 integrated into the cross section of the encircling gasket seal 4. In practice, the number of support pads can be equal to that used in conventional constructions. However, the number may be varied according to the structure of the hatch cover and the load to be carried by the hatch structure. The characterizing feature of the invention is that the support pads are not located projecting outwardly from the outer edge of the hatch cover, but instead, are integrated into the cross section of the gasket seal. The structure of the support pads themselves can be varied as required. Advantageously, at least a portion of the support pad is made from a metal. Further advantageously, the underside of the support pad has a sealing material attached thereto, whereby a continuous seal is provided about the entire perimeter of the hatch cover. The gasket seal 4 is affixed in the same manner as in cited prior-art construction into a groove made to the edge of the hatch cover 1 as shown in Fig. 4. As is evident from Figs. 3 and 4, the underside of the hatch cover outer perimeter is provided with recesses 6 at the support pads so that a small lateral displacement of the support pads is possible at heavy seas. The support pad may be made slidable and/or elasti- cally deformable to cope with such movements. The rubber gasket seal 4 may be implemented using conventional seal constructions, whereby the seal may be slidable on the coaming or compressible against a shaped metallic backing surface.
In Fig. 5 is shown a possible embodiment for an easy-to-mount gasket seal block 4 with its integrated support pad. The support pad-seal block acts as a seal element of a predetermined length that can be readily affixed in a groove made to the hatch cover 1. The seal proper extends in a conventional manner to both sides of the support pad-seal block. The support pad-seal block is provided with two threaded pin bolts 7 that are inserted via compatible holes made to the bottom of the hatch cover edge groove and are then locked in place by means of nuts 8 (Figs. 7 and 8).
In Figs. 9 and 10, the hatch cover is shown in a nonworking position, in which the support pad-seal block 4 bears no load. This is the situation when, e.g., the hatch cover is elevated off its place by means of a lift. Then, the bottom surface of the support pad 5 is vertically situated at a level higher than the underside of the gasket seal. In Figs. 7 and 8 is shown the opposite situation, namely, the working position in which the hatch cover is mounted in place. Herein, the bottom surface of the support pad 5 is vertically situated at a substantially equal level with bottom surface of the gasket seal 4 resting against the top surface of the hatch coaming. As the bottom surface of the support pad 5 is made of a sealing material, a continuous seal about the entire hatch coaming is provided. As taught above, the support pads in turn assures that the pressure imposed on the encircling seal stays constant at any point about the hatch cover perimeter, whereby an optimal seal performance is attained.
To those versed in the art it is obvious that the invention is not limited to the embodiments described above, but rather, can be varied within the scope and spirit of the appended claims. It must be noted, for instance, that the above- described exemplifying embodiment implemented having the rubber gasket seal 4 affixed to the hatch cover 1. Obviously, the seal may as well be adapted to the hatch coaming, whereby the seal rests tightly against the underside of the hatch cover. Furthermore, the support pads need not necessarily be embedded in the seal, but they may as well be connected to each other by any watertight technique, e.g., aligned along a single longitudinal line. The essential feature of the present invention will be appreciated in the integrated, watertight and compact entity formed by the adjoined seal and support pad.

Claims

What is claimed is:
1. Support and seal arrangement applicable to the hatch cover (1) of a cargo ship for supporting an essentially rectangular hatch cover (1) and a payload cargo possibly resting thereon and sealing the hatch cover against the edge of the hatch coaming (3), whereby said arrangement comprises at least one support pad (2, 5) located substantially close to the outer edges of the hatch cover (1) and an elongated gasket seal (4) running close to the outer edges of the hatch cover, characterized in that said support pads are connected in a watertight manner to said gasket seal (4).
2. Support and seal arrangement according to claim 1, characterized in that said support pads (5) are embedded at least partially in said seal (4).
3. Support and seal arrangement according to claim 1 or 2, characterized in that the seal (4) with the embedded support pads (5) is affixed to the hatch cover (1) and that in the nonworking position of the hatch cover, the bottom surface of the support pad (5) is vertically situated at a level higher than the underside of the gasket seal (4).
4. Support and seal arrangement according to any of claims 1-3, characterized in that in the working position of the hatch cover, the bottom surface of the support pad (5) is vertically situated at a substantially equal level with the bottom surface of the gasket seal (4) resting against the top surface of the hatch coaming (3).
5. Support and seal arrangement according to any of claims 1-4, characterized in that the bottom surface of the support pad (5) is made of a sealing material.
6. Support and seal arrangement according to any of claims 1-5, characterized in that the support pad (5) with the portion of seal material (4) attached thereto forms a complete, integrated block that can be affixed in place, particularly to a hatch cover (1), by means of fastening elements provided on the support pad, such as threaded pin bolts (7) and compatible nuts (8).
EP99958217A 1998-12-07 1999-11-26 Support and seal arrangement for the hatch cover of a cargo ship Expired - Lifetime EP1137570B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI982636 1998-12-07
FI982636A FI110179B (en) 1998-12-07 1998-12-07 Cargo hatch hatch support and sealing arrangement
PCT/FI1999/000981 WO2000034115A1 (en) 1998-12-07 1999-11-26 Support and seal arrangement for the hatch cover of a cargo ship

Publications (2)

Publication Number Publication Date
EP1137570A1 true EP1137570A1 (en) 2001-10-04
EP1137570B1 EP1137570B1 (en) 2004-05-12

Family

ID=8553053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99958217A Expired - Lifetime EP1137570B1 (en) 1998-12-07 1999-11-26 Support and seal arrangement for the hatch cover of a cargo ship

Country Status (10)

Country Link
EP (1) EP1137570B1 (en)
JP (1) JP2002531326A (en)
KR (1) KR100431935B1 (en)
CN (1) CN1123484C (en)
AU (1) AU1563400A (en)
DE (1) DE69917321T2 (en)
DK (1) DK1137570T3 (en)
FI (1) FI110179B (en)
PL (1) PL190816B1 (en)
WO (1) WO2000034115A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102658854A (en) * 2012-04-25 2012-09-12 华南理工大学 Light medium and large ship hatch cover
NO338137B1 (en) * 2013-07-03 2016-08-01 Oshima Shipbuilding Co Ltd Cover for a seagoing ship
CN109264579B (en) * 2018-09-30 2020-10-27 广船国际有限公司 Ship turning-over method and protection tool
JP7015814B2 (en) * 2019-09-24 2022-02-03 Ｉｈｉ運搬機械株式会社 Windproof and rain device for shipping

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2869502A (en) * 1953-02-27 1959-01-20 Stransky Gustave Hatch covers for ships
SE366701B (en) * 1970-05-25 1974-05-06 Navire Cargo Gear Int Ab
FI82426C (en) * 1988-02-17 1991-03-11 Macgregor Navire Sa STOED VID EN LASTLUCKA FOER ETT FARTYG.
JPH0532284U (en) * 1991-10-09 1993-04-27 三菱重工業株式会社 Hatch cover support structure for ships

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0034115A1 *

Also Published As

Publication number Publication date
FI982636A0 (en) 1998-12-07
FI110179B (en) 2002-12-13
CN1329554A (en) 2002-01-02
WO2000034115A1 (en) 2000-06-15
JP2002531326A (en) 2002-09-24
PL190816B1 (en) 2006-02-28
KR20010080696A (en) 2001-08-22
KR100431935B1 (en) 2004-05-17
DE69917321T2 (en) 2005-05-12
FI982636A (en) 2000-06-08
EP1137570B1 (en) 2004-05-12
DE69917321D1 (en) 2004-06-17
DK1137570T3 (en) 2004-08-02
AU1563400A (en) 2000-06-26
PL348914A1 (en) 2002-06-17
CN1123484C (en) 2003-10-08

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