KR20120128879A - Jib Rest for Crane for Vessels and Method for Controlling Height thereof - Google Patents

Jib Rest for Crane for Vessels and Method for Controlling Height thereof Download PDF

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Publication number
KR20120128879A
KR20120128879A KR1020110046799A KR20110046799A KR20120128879A KR 20120128879 A KR20120128879 A KR 20120128879A KR 1020110046799 A KR1020110046799 A KR 1020110046799A KR 20110046799 A KR20110046799 A KR 20110046799A KR 20120128879 A KR20120128879 A KR 20120128879A
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KR
South Korea
Prior art keywords
sleeve
jib
rest
sleeves
male
Prior art date
Application number
KR1020110046799A
Other languages
Korean (ko)
Inventor
이홍모
Original Assignee
대우조선해양 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.)
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Publication date
Application filed by 대우조선해양 주식회사 filed Critical 대우조선해양 주식회사
Priority to KR1020110046799A priority Critical patent/KR20120128879A/en
Publication of KR20120128879A publication Critical patent/KR20120128879A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/52—Floating cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes
    • B66C2700/0392—Movement of the crane arm; Coupling of the crane arm with the counterweights; Safety devices for the movement of the arm

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

PURPOSE: A jib rest for a crane of a ship and a height control method thereof are provided to improve work efficiency with simplified work by easily controlling the height of the jib rest with using a small jack. CONSTITUTION: A jib rest for a crane of a ship comprises two or more male sleeves(70), and female sleeves(80). The male sleeves are inserted in the female sleeves. Each contact part(90) of the arm sleeves contacting to the top of the male sleeves is tack-welded to prevent the separation of an upper structure(200) from the arm sleeves due to motion like the transportation and manufacture of the jib rest and the movement of a ship. A jack for adjusting the height of the upper structure of the sleeves is installed between the male and female sleeves.

Description

Jib rest for cranes for vessels and its height adjustment method

The present invention relates to a crane jib rest and a height adjustment method of the ship, in particular, the crane jib rest and the height adjustment of the ship that can be easily installed to adjust the height of the rest (Rest) for supporting the crane jib of the ship It is about how.

Rest for supporting jib, which is a protruding rotation part of crane used in shipbuilding or on-shore construction site, is installed separately from the crane, where the jib of crane will be placed on the rest. The height of the jib rest should be correct. However, it is common to install the crane after adjusting the height of the jib rest according to the crane.

1 shows a perspective view of a jib rest of the prior art.

In the related art, the jib rest was manufactured and installed in such a way that the height could not be adjusted. Therefore, check whether the jib of the crane is properly mounted (rest) on the jib rest, and if the height is not correct, the upper part of the jib rest is adjusted to correct the work, and the damaged coating is repaired.

Therefore, it was dangerous and laborious to install the chiefs, and it was difficult and cumbersome work such as repeatedly adjusting the height of the jib rest by using a crane repeatedly in order to achieve the correct height.

In addition, in the related art, a height-adjustable sleeve is manufactured and the upper part of the sleeve is manufactured in a tack welding state, and a crane is installed. Subsequently, check whether the jib is properly mounted on the jib rest, remove the weld bead of the tack welded portion on the upper part of the sleeve, and adjust the height by lifting the upper structure of the sleeve using a crane. Adjust the height and lower the jib of the crane in the tack welded state again to check whether the adjusted height is correct.If the height is not correct, the tack welding by adjusting the height again by lifting the upper structure of the sleeve using the crane, Adjust the height and lower the jib of the crane in the tack welding state to check whether the adjusted height is correct.If the height is not correct, repeat the process of tack welding by adjusting the height again by lifting the upper structure of the sleeve using the crane. Adjust the height After adjusting the height, the upper part of the sleeve was welded to complete the installation and repaired the damaged part.

Therefore, it was difficult and cumbersome work such as repeatedly lowering the jib of the crane to adjust the height in the process of adjusting the height, it was necessary to use the crane to adjust the height of the heavy material by using one sleeve.

The present invention has been made under the above-described background, an object of the present invention is to provide a crane jib rest and a height adjustment method of the rest of the vessel that can easily adjust the height of the rest for supporting the jib for crane.

In order to achieve the above object, the crane jis rest of the ship according to an embodiment of the present invention is connected to the support pipe 10 and the vertical ladder 40 to support and support the jib rest 1000, the platform frame 30 Platform frame 20 supporting the top rail 50, the platform frame 30 to prevent the operator from falling down on a checked plate forming the upper surface of the platform frame 30 A jib rest for a crane of a ship having parts such as an intermediate rail 60 which prevents an operator in the checked plate of falling down,

A contact of the female sleeve 80 composed of two or more male sleeves 70 and female sleeves 80, the male sleeves 70 being inserted into the female sleeves 80, and abutting the top of the male sleeves 70. A portion 90 is tack welded so that the upper structure on the sleeves is prevented from being dislodged from the arm sleeve 80 by movements such as conveying, fabricating, or shifting the position of the jib rest. Including,

A jack capable of adjusting the height of the upper structure 200 of the sleeve 70, 80 is installed between one sleeve 70, 80 and the other sleeve 70, 80 of the ship. Present the jib rest for the crane.

The height adjustment method of the crane jib rest of the ship according to an embodiment of the present invention, as a height adjustment method of the crane jib rest of the ship,

Manufacturing at least two sleeves each having a female sleeve and a male sleeve for adjusting the height of the jib rest;

A tack welding at a contact portion of the male sleeve in contact with the upper end of the female sleeve to prevent the upper structure of the male and female sleeves from deviating from the female sleeve when the jib rest is moved;

Installing the crane, confirming that the jib of the crane is normally rested on the jib rest, and then removing the tack welded welding bead of the contact portion of the male sleeve from the upper end of the female sleeve; And

Using a jack to raise or lower the upper structure of the male and female sleeves to match the height of the rest and the jib, welding the contact portion to complete the installation, the ship comprising a repair painting the damaged portion To adjust the height of the jib rest for cranes.

According to the present invention, the height of the jib rest can be easily adjusted by using a small jack instead of a crane during the installation work by using two or more sleeve structures and a plate arrangement for using a jack. The effect can be increased.

1 shows a perspective view of a jib rest of the prior art.
2 shows a front view of the jib rest of the invention.
3 shows a left side view of the jib rest for crane of the ship of the invention;

Hereinafter, a crane jib rest of a ship of the present invention will be described in detail with reference to the accompanying drawings. The same or similar reference numerals are given to the same or similar parts throughout the drawings.

2 shows a front view of the jib rest of the invention.

In the drawing, a support pipe 10 supports and supports the jib rest 1000. The platform frame 20 is connected to the vertical ladder 40 to support the platform frame 30. The intermediate rail 60 prevents the operator from falling down on a checked plate (not shown) that forms the top surface of the platform frame 30. The top rail 50 also prevents the operator from falling down on the check plate that forms the top surface of the platform frame 30.

The male sleeve 70 is inserted into the female sleeve 80 and the contact portion 90 of the female sleeve 80 in contact with the top of the male sleeve 70 is tack welded. Provisional welding is an extraordinary provisional weld on both ends or the back of the base material to prevent bending or twisting of the workpiece. The reason for the temporary welding is to prevent the upper structure of the rest from being separated from the arm sleeve 80 by the transportation of the jib rest 1000, the shifting of the manufacturing vessel, and the like. Although two sleeves 70 and 80 are illustrated in the drawing, the sleeves 70 and 80 are not limited thereto and may be set to an appropriate number. The male sleeve 70 connected to the upper structure 200 is firmly fixed by welding, and the female sleeve 80 is also firmly fixed by welding to the plate 100.

In addition, a portion (A) in the drawing is provided with a jack (not shown) that can adjust the height of the upper structure 200 of the sleeve (70, 80). Since two or more sleeves 70 and 80 are installed, the height of the upper structure 200 can be adjusted with only a small jack.

3 shows a left side view of the jib rest for crane of the ship of the invention;

The same parts as in FIG. 2 are described in FIG. 2, and thus description thereof will be omitted.

In the drawing, 110 is a hand grip for holding the jib rest 1000 by hand.

2 and 3 will now be described the operation of the height adjustment method of the crane jib rest of the ship of an embodiment of the present invention.

As shown in FIG. 2, two or more sleeves 70 and 80 that can adjust the height of the jib rest are manufactured, and a jib is provided at the contact portion 90 of the male sleeve 70 which is in contact with the upper end of the female sleeve 80. The tack welding, ie, is welded, to prevent the superstructure 200 from leaving the arm sleeve 80 upon movement of the rest.

Next, the installation of the crane (not shown) is completed, and it is checked whether the jib (not shown) of the crane is normally mounted on the jib rest 1000. The top of the female sleeve 70 then removes the tack welded weld beads of the contact portion of the male sleeve 80. A jack not shown is then used to raise or lower the upper structure of the male and female sleeves to match the height of the rest and jib. In this way, when the height adjustment is completed, the contact portion 90 is welded to complete the installation, and paint the damaged parts of the coating.

This makes it possible to adjust the height by lowering the jib of the crane while supporting the upper structure with the jack so that the correct height can be adjusted at once.

According to the present invention, the height of the jib rest can be easily adjusted by using a small jack instead of a crane during the installation work by using two or more sleeve structures and a plate arrangement for using a jack. The effect can be increased.

So far, the jib rest for a crane of a ship according to an embodiment of the present invention has been described with reference to the drawings, but this is for illustrative purposes, and the present invention is not intended to be limited thereto. As defined by the claims, all changes or modifications derived from the meaning and scope of the claims of the present invention and equivalent concepts thereof should be construed as being included in the scope of the present invention.

10: cock pipe 20: platform frame
30: platform frame 40: vertical ladder
50: top rail 60: intermediate rail
70: male sleeve 80: female sleeve
90: contact part 100: plate
110: hand grip 200: superstructure
1000: jib rest

Claims (4)

A support pipe 10 for supporting and supporting the jib rest 1000, a platform frame 20 connected to the vertical ladder 40 to support the platform frame 30, and a check forming an upper surface of the platform frame 30. A top rail 50 which prevents the operator in the checked plate from falling down, an intermediate rail 60 which prevents the operator in the checked plate of the platform frame 30 from falling down and Jib rest for cranes of ships having the same parts,
A contact of the female sleeve 80 composed of two or more male sleeves 70 and female sleeves 80, the male sleeves 70 being inserted into the female sleeves 80, and abutting the top of the male sleeves 70. A portion 90 is tack welded so that the upper structure on the sleeves is prevented from being dislodged from the arm sleeve 80 by movements such as conveying, fabricating, or shifting the position of the jib rest. Including,
A jack capable of adjusting the height of the upper structure 200 of the sleeve 70, 80 is installed between one sleeve 70, 80 and the other sleeve 70, 80 of the ship. Jib rest for cranes. The method according to claim 1,
The male sleeve 70 connected to the upper structure 200 is firmly fixed by welding, and the female sleeve 80 is rigidly fixed by welding to the plate 100 at the lower end thereof. Rest. As height adjustment method of jib rest for crane of ship,
Manufacturing at least two sleeves each having a female sleeve and a male sleeve for adjusting the height of the jib rest;
A tack welding at a contact portion of the male sleeve in contact with the upper end of the female sleeve to prevent the upper structure of the male and female sleeves from deviating from the female sleeve when the jib rest is moved;
Installing the crane, confirming that the jib of the crane is properly rested on the jib rest, and then removing the weld welded bead at the top of the female sleeve from the contact portion of the male sleeve; And
Using a jack to raise or lower the upper structure of the male and female sleeves to match the height of the rest and the jib, welding the contact portion to complete the installation, the ship comprising a repair painting the damaged portion To adjust the height of the jib rest for cranes. Jib rest of a land crane having a structure as claimed in claim 1.
KR1020110046799A 2011-05-18 2011-05-18 Jib Rest for Crane for Vessels and Method for Controlling Height thereof KR20120128879A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110046799A KR20120128879A (en) 2011-05-18 2011-05-18 Jib Rest for Crane for Vessels and Method for Controlling Height thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110046799A KR20120128879A (en) 2011-05-18 2011-05-18 Jib Rest for Crane for Vessels and Method for Controlling Height thereof

Publications (1)

Publication Number Publication Date
KR20120128879A true KR20120128879A (en) 2012-11-28

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160071704A (en) * 2014-12-12 2016-06-22 삼성중공업 주식회사 Crane boom rests
KR20190018852A (en) 2017-08-16 2019-02-26 대우조선해양 주식회사 Flood light post having crane jib rest
CN110153599A (en) * 2019-05-20 2019-08-23 浙江国际海运职业技术学院 Crane mounting process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160071704A (en) * 2014-12-12 2016-06-22 삼성중공업 주식회사 Crane boom rests
KR20190018852A (en) 2017-08-16 2019-02-26 대우조선해양 주식회사 Flood light post having crane jib rest
CN110153599A (en) * 2019-05-20 2019-08-23 浙江国际海运职业技术学院 Crane mounting process

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