KR20140052497A - Manhole apparatus with a readily interchangeable bolt for ship - Google Patents

Manhole apparatus with a readily interchangeable bolt for ship Download PDF

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Publication number
KR20140052497A
KR20140052497A KR1020120118631A KR20120118631A KR20140052497A KR 20140052497 A KR20140052497 A KR 20140052497A KR 1020120118631 A KR1020120118631 A KR 1020120118631A KR 20120118631 A KR20120118631 A KR 20120118631A KR 20140052497 A KR20140052497 A KR 20140052497A
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KR
South Korea
Prior art keywords
liner
bolt
manhole
wedge
shaped stud
Prior art date
Application number
KR1020120118631A
Other languages
Korean (ko)
Inventor
박희갑
이승호
Original Assignee
현대중공업 주식회사
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 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020120118631A priority Critical patent/KR20140052497A/en
Publication of KR20140052497A publication Critical patent/KR20140052497A/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/14—Cap nuts; Nut caps or bolt caps

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Abstract

The present invention relates to a manhole for vessels whereby bolts are replaceable. The purpose of the said invention is to provide a manhole for vessels whereby replaceable wedge-shaped stud bolts are prepared; is capable of improving the workability; and reduce the costs due to the replacement works by allowing the replacement of the damaged bolts without removing a liner welded in a vessel structure when the bolts are damaged to fasten a manhole cover. The present invention is formed by including: an annular liner welded to the manhole of the vessel structure and equipped with a plurality of bolt holes; a wedge-shaped stud bolt whereby one side is connected to the bolt hole of the liner by bolts; a plurality of connection holes into which the wedge-shaped stud bolt is inserted and penetrated; a manhole cover connected to the liner and to seal the manhole; and a cap nut fastened to the end of the wedge-shaped stud bolt protruding by penetrating through the connection hole of the manhole cover and to closely fix the manhole cover to the liner. If the wedge-shaped stud bolt connected to the liner is damaged, the damaged bolt is removed from the liner for replacement.

Description

TECHNICAL FIELD [0001] The present invention relates to a manhole apparatus for a ship capable of replacing a bolt,

The present invention relates to a manhole apparatus for a ship capable of replacing a bolt, which comprises a wedge-shaped stud bolt fastened to a liner welded to a hull structure, a manhole cover fastened to a wedge-shaped stud bolt by a nut, The present invention relates to a manhole for a marine vessel capable of replacing only bolted wedge-shaped stud bolts when a bolt is partially damaged.

In general, a manhole refers to a hole that allows a person to enter or exit a sewer pipe, a water pipe, an underground cable, a pavement, a deck of a ship, or the like, and a manhole for various purposes is fixedly installed and used Such a manhole for manholes is composed of a flange type liner welded and fixed to the hull structure and a manhole cover joined by bolts connected to the liner.

4, the conventional manhole apparatus is integrally coupled to the liner 310 in the backside welding in a state where the stud bolts 320 for engaging the manhole cover 330 are fitted to the liner 310 A stator bolt 320 welded to the liner is inserted into the coupling hole of the manhole cover 330. The liner 310 is coupled to the hull structure 200 by welding, And then the manhole cover 330 is coupled to the liner 310 welded to the hull structure 200 by the cap nut 340.

However, in the conventional manhole apparatus, the stud bolts 320 are welded to the liner 310, and the liner 310 is welded to the hull structure 200, so that the wear of the stud bolts 320 and / When the breakage occurs, the entire liner 310 welded and fixed to the hull structure 200 and a part of the hull structure are pulled out, and the whole liner and the hull structure detached from the hull structure are replaced, There is a problem in that it is increased.

In particular, when damage occurs to the stud bolts of a manhole device installed in a crude cargo tank or the like, all the crude oil in the crude oil cargo tank is taken out, the vapor in the crude oil cargo tank is removed, The entire liner including the generated stud bolt and a part of the hull structure must be detached from the hull structure, and therefore, not only the working time is increased but also the repair operation cost is required due to the obstacle of the ship operation due to the replacement.

In order to weld a bolt to a liner, a worker inserts a bolt into a liner having at least two workers, that is, a liner having a plurality of bolt-in holes at the edge thereof, The worker uses a welding machine to weld the bolt to the liner, so the productivity is low and the labor cost is raised.

Particularly, in the conventional manhole apparatus, when the liner and the bolt are welded together, the bolt is bent due to the welding heat, and a work process for correcting the bolt is required to be separately performed. There have been various problems such as the occurrence of a safety accident involving injury.

Registered Utility Model Registration No. 20-0281937 (July 2, 2002)

The object of the present invention is to enable replacement of a damaged wedge-shaped stud bolt without removing a liner welded to a ship structure in the event of damage to a bolt for fastening a manhole cover, The present invention provides a manhole for a ship capable of replacing a bolt capable of reducing the number of bolts.

The present invention relates to a hull structure comprising an annular liner welded to a manhole of a hull structure and having a plurality of bolt holes, a wedge-shaped stud bolt having one end connected to the bolt hole of the liner,

A manhole cover having a plurality of engaging holes through which the wedge-shaped stud bolts are inserted, a manhole cover coupled to the liner to seal the manhole,

And a nut fastened to the end of the stud bolt protruding through the coupling hole of the manhole cover to closely fix the manhole cover to the liner.

As described above, since the bolt for fixing the manhole cover is screwed to the bolt hole of the liner, the manufacturing and installation work of the manhole for the ship can be facilitated.

According to the present invention, since the stud bolt is screwed to the bolt hole of the liner, it is possible to assemble the manhole device by one operator, and the work efficiency can be improved while minimizing the work force.

Since the wedge-shaped stud bolt is fastened to the bolt hole of the liner, no separate welding work for fixing the bolt is required, thereby preventing the bolt from being bent due to the welding operation, It is not necessary to perform an operation for correcting the error.

The present invention is capable of replacing damaged bolts only without removing (separating) a liner welded to a hull structure in the event of damage to a bolt fixing the manhole cover, thereby facilitating the replacement work, shortening the working time, The cost of replacement work can be reduced.

The present invention relates to a method of removing oil in a cargo tank, removing gas in a cargo tank, washing in a cargo tank, removing a liner from a hull structure, It is possible to omit the use of the manhole bolts and to reduce the operation cost of the shipowners by replacing the damaged manhole bolts.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view showing a fastening structure of a manhole device according to the present invention; FIG.
2 is an exemplary view showing the entire configuration of a manhole apparatus according to the present invention.
3 is an exemplary view showing a configuration of a wedge-shaped stud bolt of the present invention
FIG. 4 is a view showing an example of a conventional manhole apparatus

FIG. 1 is an exemplary view showing a fastening structure of a manhole apparatus according to the present invention, FIG. 2 is an exemplary view showing the entire configuration of a manhole apparatus according to the present invention, FIG. 3 is a view showing a configuration of a wedge- Fig.

The present invention relates to an annular liner (10) welded to a manhole (210) of a hull structure (200) and having a plurality of bolt holes (11)

A wedge-shaped stud bolt 20 screwed to one side of the bolt hole 11 of the liner 10 and a plurality of coupling holes 31 through which the wedge-shaped stud bolt 20 is inserted, A manhole cover 30 coupled to the liner 10 to shield the manhole 210,

And a nut 40 fastened to the end of the wedge-shaped stud bolt 20 protruding through the coupling hole 31 of the manhole cover 30 to fix the manhole cover 30 tightly to the liner 10 .

The liner 10 is installed in a manhole 210 formed in the hull structure 200 and has a ring shape and a plurality of bolt holes 11 are formed at regular intervals. The bolt hole 11 has a thread formed therein, and one end of the wedge-shaped stud bolt 20 is screwed and engaged.

The wedge-shaped stud bolt 20 is screwed to the bolt hole 11 of the liner at one end and screwed into the nut 40 through the coupling hole 31 of the manhole cover. The wedge-shaped stud bolt 20 is a bolt without a bolt head. A thread is formed on the outer surface of the rod-shaped body 21, and a head portion 22 at the upper end of the body 21 is wedge- Therefore, when replacing the damaged stud bolt, it is easy to grasp by the wrench.

The manhole cover 30 is formed in a plate shape and is bolted to the liner 10 by a wedge-shaped stud bolt 20 to shield the manhole 210 formed in the hull structure 200. The shape of the manhole cover 30 is formed to match the shape of the manhole 210 and is generally circular, square, elliptical, or the like. A plurality of coupling holes 31 are formed in the outer periphery of the manhole cover so as to correspond to the bolt holes 11 formed in the liner, that is, the wedge-shaped stud bolts 20 fastened to the liner are inserted through the holes.

The manhole cover 30 may be hinged to one side of the hull structure so as to be rotatable. Such a structure is well known in the art and will not be described in detail.

A packing 50 is further provided between the manhole cover 30 and the liner 10.

The manhole apparatus 100 according to the present invention constructed as described above includes a plurality of bolt holes 11 having a thread in a liner 10 having an annular shape along a manhole of a hull structure, 10 is welded to a manhole 210 of a hull structure and one end of a wedge-shaped stud bolt 20 is screwed to a bolt hole 11 of the welded liner 10 to form a liner 10 and a wedge- The stud bolt 20 is integrated and the manhole cover 30 is brought into close contact with the liner 10 so that the wedge-shaped stud bolt 20 passes through the coupling hole 31. Thereafter, The nut 40 is fastened to the other end of the wedge-shaped stud bolt 20 protruding through the hull structure 200 so that the manhole 210, the liner 10 and the manhole cover 30 of the hull structure 200 are integrated, 210).

In addition, in the present invention configured as described above, when damage to one side stud bolt occurs due to long-term use or external force, the nut and the manhole cover are removed, and the upper end of the damaged wedge-shaped stud bolt is rotated by a wrench Next, another wedge-shaped stud bolt is fastened to the bolt hole of the liner to replace the wedge-shaped stud bolt.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(10): liner (11): bolt hole
(20): wedge-shaped stud bolt (30): manhole cover
(31): engaging hole (40): nut
(100): Manhole apparatus (200): Hull structure
(210): Manhole

Claims (1)

An annular liner 10 welded to the manhole 210 of the hull structure 200 and having a plurality of bolt holes 11,
A wedge-shaped stud bolt 20 screwed to one side of the bolt hole 11 of the liner 10 and a plurality of coupling holes 31 through which the wedge-shaped stud bolt 20 is inserted, A manhole cover 30 coupled to the liner 10 to shield the manhole 210,
And a cap nut 40 fastened to the end of the wedge-shaped stud bolt 20 protruding through the coupling hole 31 of the manhole cover 30 to closely fix the manhole cover 30 to the liner 10 Respectively,
Wherein when the wedge-shaped stud bolt coupled to the liner is damaged, only the damaged wedge-shaped stud bolt is removed from the liner to replace the bolt.
KR1020120118631A 2012-10-24 2012-10-24 Manhole apparatus with a readily interchangeable bolt for ship KR20140052497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120118631A KR20140052497A (en) 2012-10-24 2012-10-24 Manhole apparatus with a readily interchangeable bolt for ship

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120118631A KR20140052497A (en) 2012-10-24 2012-10-24 Manhole apparatus with a readily interchangeable bolt for ship

Publications (1)

Publication Number Publication Date
KR20140052497A true KR20140052497A (en) 2014-05-07

Family

ID=50885727

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120118631A KR20140052497A (en) 2012-10-24 2012-10-24 Manhole apparatus with a readily interchangeable bolt for ship

Country Status (1)

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KR (1) KR20140052497A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104843144A (en) * 2015-05-28 2015-08-19 上海船舶研究设计院 Ship manhole cover opening device
CN111315992A (en) * 2017-11-02 2020-06-19 艾默生环境优化技术有限公司 Scroll compressor with scroll bolt clamping engagement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104843144A (en) * 2015-05-28 2015-08-19 上海船舶研究设计院 Ship manhole cover opening device
CN111315992A (en) * 2017-11-02 2020-06-19 艾默生环境优化技术有限公司 Scroll compressor with scroll bolt clamping engagement

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