KR20170040837A - Heavy lifting device - Google Patents

Heavy lifting device Download PDF

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Publication number
KR20170040837A
KR20170040837A KR1020150139714A KR20150139714A KR20170040837A KR 20170040837 A KR20170040837 A KR 20170040837A KR 1020150139714 A KR1020150139714 A KR 1020150139714A KR 20150139714 A KR20150139714 A KR 20150139714A KR 20170040837 A KR20170040837 A KR 20170040837A
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KR
South Korea
Prior art keywords
tower
support member
main
main tower
lifting
Prior art date
Application number
KR1020150139714A
Other languages
Korean (ko)
Inventor
박응범
정지형
김태형
이영규
Original Assignee
다올이앤씨 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
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Application filed by 다올이앤씨 주식회사 filed Critical 다올이앤씨 주식회사
Priority to KR1020150139714A priority Critical patent/KR20170040837A/en
Publication of KR20170040837A publication Critical patent/KR20170040837A/en

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C17/00—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports
    • B66C17/06—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports specially adapted for particular purposes, e.g. in foundries, forges; combined with auxiliary apparatus serving particular purposes
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The present invention relates to a heavy lifting device installed on a main tower for installing an upper tower according to the present invention, and more particularly, to a heavy lifting device installed on both sides of a pier and having a plurality of main towers (10) An upper tower 20 installed at the upper end of the main tower 10; And a support member 30A connected to each of the main tower 10 and a support member 30A provided on the support member 30A for lifting the upper tower 20 and installing the upper tower 20 on the top of the main tower 10 And lifting means 30 composed of a lifter 30B.
Accordingly, in the present invention, the support member of the lifting means connects the upper portion of the main tower in the transverse direction to restrain it, thereby preventing the buckling of the main tower due to the weight of the upper tower and the bending deformation when the upper tower is installed. We propose a heavy lifting device to be installed on the pylon.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a heavy lifting device installed on a main tower,

The present invention is characterized in that lifting means for installing an overhead tower on a main tower of a bridge comprises a support member connecting upper portions of adjacent pylons and a lifter mounted on the support member. That is, according to the present invention, since the support members of the lifting means are connected to each other in the horizontal direction by connecting the upper portion of the main tower in a horizontal direction, the buckling phenomenon and the bending deformation of the main tower due to the weight of the upper tower can be prevented. The present invention relates to a heavy lifting device installed on a pylon.

Generally, in the case of a cable-stayed bridge or a suspension bridge, a pylon is installed on a bridge pier, and a precasted pylon is first installed on both sides of the pier, and then the tower is lifted by a crane and installed on the top of the pylon.

However, when the overhead tower having a heavy weight is placed on the top of the main tower, the load of the top tower is applied to the upper part of the main tower due to the weight of the top tower, thereby causing a buckling phenomenon or deformation of the main tower.

In order to solve such a problem, a support member for horizontally connecting the pylon to a specific point of the main tower constituting the pair is provided.

In this case, the buckling phenomenon and deformation of the main tower due to the load of the upper tower can be prevented by the introduction of the support member,

There is a problem in that the number of workloads increases because the support member must be provided separately from the crane for lifting up the tower.

Patent Registration No. 10-1118526 (2012.02.14)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

It is an object of the present invention to prevent the buckling phenomenon and the bending deformation of the main tower due to the weight of the upper tower when the upper tower is installed by restraining and supporting the upper part of the main tower in the lateral direction.

Another object of the present invention is to secure safety and structural stability at the time of installation work of the upper tower because the support member for supporting the lifter of the lifting means can secure the rigidity.

Another aspect of the present invention is to prevent deformation or conduction of a working platform caused by a load of an overhead tower pulled up from one side of a working platform by introducing a reaction force supporting cable connecting the working platform and a pier.

A heavy lifting apparatus installed on a main tower for installing an upper tower according to the present invention comprises a plurality of main towers (10) installed on both sides of a pier and arranged so as to be closer to each other; An upper tower 20 installed at the upper end of the main tower 10; And a support member 30A connected to each of the main tower 10 and a support member 30A provided on the support member 30A for lifting the upper tower 20 and installing the upper tower 20 on the top of the main tower 10 And lifting means 30 composed of a lifter 30B.

The support member 30A of the lifting means 30 according to the present invention includes a coupling portion 31 penetratingly connected to the respective main tower 10, And a first support part 34 for connecting and restraining an upper part of the first support part 34 in the horizontal direction.

The joining portion 31 according to the present invention includes a rigid bar 32 penetrating the respective main tower 10 and having both ends exposed to the outside of the main tower 10, And a fixing bracket 33 to which the first support part 34 is fixed.

The support member 30A according to the present invention further includes a second support portion 35 disposed across both side portions of the first support portion 34. [

The support member 30A according to the present invention is further provided with conveying means 40 for moving the lifter 30B.

And a working platform (50) disposed above the support member (30A) of the lifting means according to the present invention, on which the lifter (30B) and the conveying means (40) are installed.

And a reaction force supporting cable 60 connecting the working platform 50 and the pier 1 when the upper tower 20 is lifted according to the present invention.

The heavy lifting apparatus installed on the main tower for installing the upper tower according to the present invention can prevent the buckling phenomenon or deformation due to the load of the upper tower when the upper tower is installed,

In addition, since the lifting means installed on the main tower is constructed such that a sufficient rigidity can be ensured, safety and structural stability can be ensured when the top tower is installed.

In addition, it is not necessary to provide a separate support member in order to prevent deformation of the main tower when the upper tower is installed, so that it is possible to reduce the number of operations and improve the work efficiency.

Further, according to the present invention, it is possible to prevent the deformation or conduction of the working platform, which may be caused by the load of the overhead tower lifted from one side of the working platform, by introducing the reaction supporting cable connecting the working platform and the pier, And the stability can be further improved.

1 is a front view and a side view showing a heavy lifting device installed on a main tower for installing an upper tower according to the present invention;
2 is a front view showing a heavy lifting apparatus according to the present invention.
3 is an operation diagram illustrating an operation state of a heavy lifting apparatus according to the present invention.
FIG. 4 is a front view and a side view showing a heavy lifting apparatus incorporating a reaction supporting cable for preventing the walking platform from falling when lifting the overhead tower according to the present invention; and FIG.
5 is a front view and a side view of a conventional heavy lifting device;

Hereinafter, the heavy lifting device installed on the main tower for installing the upper tower according to the present invention will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, the heavy lifting device according to the present invention includes:

A plurality of pagodas 10 arranged to correspond to each other on the bridge piers 1 for the installation of bridges; an upper tower 20 installed at the upper end of the main tower 10; And lifting means (30) for lifting the floor (20) and installing it on the top of the main tower (10).

First, in the case of a cable-stayed bridge or a suspension bridge in a bridge, a pylon 10 is placed on a bridge pier 1 to install a cable for supporting the bridge, and the main pylon 10 is connected to a bottom plate of the bridge by a cable.

Of course, in the case of cable-stayed bridge and suspension bridge, cables are introduced to realize bridge construction of bridge although there is structural difference in working principle.

Especially, the pylons 10 for installing cables are provided on both sides of the bridge piers, and are arranged in a plurality of directions along the longitudinal direction of the bridges.

The top tower 20 is installed on the top of a plurality of main towers 10,

As shown in FIG. 5, in the related art, there is provided an installed tower 100 installed on a pier 1 and a lifting device 200 for lifting the tower 20 above the installed tower 100,

The upper tower 20 is raised and lowered by the lifting device 200 to be installed on the main tower 10.

However, in the conventional method of installing the overhead tower, when the overhead tower having a heavy weight is placed on the top of the main tower, due to the weight of the overhead tower, a load due to the overhead tower acts on the top of the main tower, resulting in buckling phenomenon or deformation.

In order to solve such a problem, a support member for horizontally connecting the pylon to a specific point of the main tower is provided.

In this case, the buckling phenomenon and deformation of the main tower due to the load of the upper tower can be prevented by the introduction of the support member,

Since the lifting device for lifting up the tower is provided with a separate support member, there is a problem in that the number of workings increases.

Therefore, the present invention intends to solve the conventional problems as described above by introducing the lifting means 30 installed in the main tower 10 as shown in FIGS.

For this purpose, the lifting means (30) according to the invention

A support member 30A connected to each of the main tower 10 and a lifter 30B provided on the support member 30A for lifting the top tower 20 and installing the top tower 20 on the top of the main tower 10 .

The support member 30A of the lifting means 30 includes an engaging portion 31 connected to the respective pivot towers 10 and a connecting portion 31 mounted to the engaging portion 31 to connect the pivot towers 10 in the lateral direction And a first support portion (34) for constraining the first support portion (34).

The joining portion 31 is provided with a plurality of rigid rods 32 which are inserted through a plurality of insertion holes 11 formed in the upper portions of the main tower 10, 10 and exposed.

3A and 3B, a fixing bracket 33 is mounted on the exposed end portion 32a of the rigid rods 32,

A plurality of fastening holes (not shown) are formed in the fixing bracket 33 so as to correspond to the exposed end portions 32a of the rigid rods 32.

In this case, the exposed end portion 32a of the rigid rods 32 is formed with a thread so that the exposed end portion 32a is inserted into the fastening hole (not shown), and the fastening nut N is fastened to the exposed end portion 32a So that the rigid rods 32 and the fixing brackets 33 are fixed to the respective pylons 10.

The first support portion 34 is connected to the upper end of the fixing bracket 33 and disposed in the lateral direction of the main tower 10,

The first support portion 34 is formed of an 'H' beam or an 'I' beam, and a plurality of coupling holes (not shown) are formed in a lower flange of the first support portion 34.

Corresponding coupling holes (not shown) are formed in the upper portion of the fixing bracket 33 so as to correspond to the coupling holes of the first support portion 34 and the coupling bolts B are inserted through the coupling holes, And the first supporting portion 34 is fixed to the fixing bracket 33 by fastening the fastening nut.

In addition, the connection between the first support part 34 and the fixing bracket 33 may be achieved by welding,

After the upper tower 20 is installed on the main tower 10, since the lifting apparatus must be disassembled, it is preferable to introduce a bolt tightening method for the convenience of disassembly work.

The first support portion 34 is connected to the upper portion of the main tower 10 in the lateral direction so that when the upper tower 20 having a heavy weight is installed at the upper end of the main tower 10, It is possible to prevent the buckling phenomenon and the bending deformation of each main tower 10 from being generated by constraining and supporting the main tower 10.

Therefore, by introducing the first support portion 34, it is not necessary to provide a separate support member 30A in addition to the installation of the lifting device as in the prior art, so that the work efficiency can be improved by reducing the number of workpieces.

A second support part 35 is installed on the first support part 34,

The second support portion 35 is composed of a lower support portion 35a provided to cross both sides of the first support portion 34 and an upper support portion 35b provided on the upper portion of the lower support portion 35a,

An upper support portion 35c is provided at an upper portion of the upper support portion 35b.

A jack support 35d may be provided between the upper support 35b and the upper support 35c to adjust the height of the upper support 35c.

The height of the lifter 30B installed on the upper portion of the support member 30A can be adjusted by the jack support 35d.

The lower support portion 35a and the upper support portion 35b introduce a truss structure or a vent structure to reinforce the rigidity of the second support portion 35 and to facilitate the installation work and disassembly operation of the lift member .

Further, the lifter 30B according to the present invention is disposed on the upper portion of the support member 30A,

In this case, it is preferable that the conveying means 40 for moving the lifter 30B can be installed on the upper support portion 35c of the second support portion 35.

First, the moving means includes a first guide rail 41 installed at an upper portion of the upper support portion 35c,

And a second guide rail 42 for conveying the lifter 30B by being disposed in a manner crossing the first guide rail 41. [

A first guide 43 is installed under the second guide rail 42,

A hydraulic jack 45 fixed to the upper portion of the first guide rail 41 for transmitting power to move the second guide rail 42 and connected to a side portion of the second guide rail 42, Respectively.

A second guide 44 is provided below the lifter 30B to connect the lifters 30B adjacent to each other and move along the second guide rail 42 of the lifter 30B.

And a hydraulic jack 45 fixed to the upper portion of the second guide rail 42 to transmit power to move the second guide 44 and connected to a side portion of the second guide 44 .

Therefore, the upper tower 20 is lifted up to the upper end of the main tower 10 by adjusting the upper tower 20 to the installation position by the conveying means 40 to install the upper tower 20 mounted on the lifter 30B, Can be performed smoothly.

Next, the lifters 30B are formed on the upper portion of the second guide 44 of the conveying means 40, and a pair of lifters 30B are arranged in the forward and backward directions.

A cable 36 is mounted on each of the lifters 30B and a lifting lug 37 lug is mounted on the upper end of the cable 36 of the plurality of lifters 30B.

In addition, a rigid cable, which is arranged on the front and rear surfaces of the upper tower 20 in the vertical direction, and is installed in a cable-stayed bridge or a suspension bridge,

The lifting lugs 37 are fixed to the fixing lugs 21 when the upper tower 20 is lifted.

The lifting lugs 37 provided on the cable 36 of the plurality of lifters 30B are connected to the turnbuckle 38 so that the interval between the lifting lugs 37 can be adjusted, .

A working platform 50 is provided on part or all of the first support portion 34, the first guide rail 41 and the second guide rail 42 of the support member 30A, It is preferable that an operator controls the installation work of the upper tower 20 on the working platform 50 or guides the lifting work of the upper tower 20 during the installation work of the upper tower 20.

Hereinafter, an operation state for lifting the upper tower 20 by the lifting apparatus according to the present invention and installing the upper tower 20 on the main tower 10 will be briefly described with reference to FIGS. 1 and 3 .

The cable 36 of the lifter 30B is pulled out to join the lifting lug 37 of the lifter 30B and the fixing lug 21 of the upper tower 20 as shown in Fig. The spacing of the lifting lugs 37 is adjusted and the binding force between the lifting lugs 37 and the fixing lugs 21 is increased.

Next, the lifter 30B is used to pull up the cable 36 to lift up the upper tower 20,

In this case, it is preferable that the upper tower 20 is disposed at one side of the main tower 10 so that the lifting operation of the upper tower 20 is not disturbed.

As shown in FIG. 3A, when the upper tower 20 is disposed at the installation position on the upper side of the main tower 10,

3B, the lifter 30B and the upper tower 20 are simultaneously transferred to the top of the main tower 10 by using the conveying means 40, and the upper tower 20 is placed on the top of the main tower 10 and installed do.

In this state, after the worker dismantles the lifting lugs 37 of the lifter 30B and the fixing lugs 21 of the upper tower 20 from the working platform 50, the lifter 30B is retracted After that,

By disassembling the lifting device, the installation work of the upper tower is completed on the top of the main tower.

1 and 4, when the upper tower 20 is lifted and installed on the tower 10, the tower 10 is positioned at the center of the bridge 1, The lifter 30B mounted on the working platform 50 is disposed on one side of the working platform 50 and the cable 36 connected to the lifter 30B is connected to the lifter 30B Is mounted on the upper tower 20.

In this state, when the upper tower 20 is raised and lowered, a load of the upper tower 20 is applied to one side of the working platform 50, and there is a risk that the walking platform 50 is deformed or turned over.

4, in the present invention, a reaction force supporting cable 60 for connecting the other side of the walking platform 50 to the pier 1 is introduced during lifting of the upper tower 20, Or conduction can be prevented.

In this case, the reaction force supporting cable 60 is installed before the upper tower 20 is lifted. At this time, when the proper tension is applied, the tension of the reaction supporting cable 60 increases when the upper tower 20 is lifted. It is possible to prevent deformation or conduction of the first and second electrodes 50 and 50.

The embodiments and the accompanying drawings described in the present specification are merely illustrative of some of the technical ideas included in the present invention. Accordingly, the embodiments disclosed herein are for the purpose of describing rather than limiting the technical spirit of the present invention, and it is apparent that the scope of the technical idea of the present invention is not limited by these embodiments. It will be understood by those of ordinary skill 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 by the appended claims.

B: fastening bolt N: fastening nut
1: Pier
10: pylon
11: Insertion ball
20: Stand Tower
21: Fixing lugs
30: lifting means
30A: Support member 30B: Lifter
31: engaging portion 32: rigid bar
32a: exposed end 33: fixing bracket
34: first support portion 35: second support portion
35a: lower support portion 35b: upper support portion
35c: upper support portion 35d: jack support
36: Cable 37: Lifting lugs
38: Turnbuckle
40:
41: first guide rail 42: second guide rail
43: first guide 44: second guide
45: Hydraulic Jack
50: Walking Platform
60: Reaction-supporting cable
100: Installation tower
200: lifting device

Claims (7)

A plurality of main towers (10) installed on both sides of the piers and arranged so as to be closer to each other in the upper direction;
An upper tower 20 installed at the upper end of the main tower 10; And
A support member 30A connected to each of the pylons 10,
Lifting means (30) provided on the support member (30A) and composed of a lifter (30B) for lifting the upper tower (20) and installing the upper tower (20) on the top of the main tower (10);
Wherein the heavy lifting device is installed on the main tower for the installation of the overhead tower.
2. A device according to claim 1, characterized in that the support member (30A) of the lifting means (30)
An engaging portion 31 penetratingly connected to each of the main tower 10,
And a first support part (34) mounted on the joint part (31) and connecting the upper part of the main tower (10) in a horizontal direction to restrain the upper part of the main tower (10). The heavy lifting Device.
3. The connector according to claim 2, wherein the engaging portion (31)
A rigid bar 32 penetrating the respective main tower 10 and having both ends exposed to the outside of the main tower 10,
And a fixing bracket (33) mounted on both ends of the rigid bar (32) and fixed to the first supporting part (34). The heavy lifting device as set forth in claim 1,
3. The apparatus according to claim 2, wherein the support member (30A)
Further comprising a second support portion (35) disposed across both side portions of the first support portion (34). ≪ RTI ID = 0.0 > 31. < / RTI >
The method according to claim 1,
Further comprising transport means (40) provided on the support member (30A) for movement of the lifter (30B).
6. The method of claim 5,
And a working platform (50) disposed above the support member (30A) of the lifting means to install the lifter (30B) and the conveying means (40) The lifting device comprising:
The method according to claim 6,
And a reaction force supporting cable (60) for connecting the working platform (50) and the bridge pier (1) when the upper tower (20) is lifted. The heavy lifting device .
KR1020150139714A 2015-10-05 2015-10-05 Heavy lifting device KR20170040837A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109098089A (en) * 2018-08-21 2018-12-28 中国十七冶集团有限公司 A kind of suspension bridge column overhead main cable saddle hanging apparatus and construction method
CN112942109A (en) * 2021-01-14 2021-06-11 中铁七局集团武汉工程有限公司 Method for mounting main cable saddle of single-tower self-anchored suspension bridge
CN113322816A (en) * 2021-05-23 2021-08-31 中铁九桥工程有限公司 Multi-interface beam tower matching precision control method and device
CN113668406A (en) * 2021-09-26 2021-11-19 河南国基建设集团有限公司 Municipal construction prefabricated pier erecting device and erecting method thereof
CN113684758A (en) * 2021-09-07 2021-11-23 中国铁建大桥工程局集团有限公司 Self-anchored suspension bridge construction auxiliary device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101118526B1 (en) 2011-09-08 2012-03-12 주식회사 한진중공업 Construction method of steel tower of bridge and dismantling method of lifting frame

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101118526B1 (en) 2011-09-08 2012-03-12 주식회사 한진중공업 Construction method of steel tower of bridge and dismantling method of lifting frame

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109098089A (en) * 2018-08-21 2018-12-28 中国十七冶集团有限公司 A kind of suspension bridge column overhead main cable saddle hanging apparatus and construction method
CN112942109A (en) * 2021-01-14 2021-06-11 中铁七局集团武汉工程有限公司 Method for mounting main cable saddle of single-tower self-anchored suspension bridge
CN113322816A (en) * 2021-05-23 2021-08-31 中铁九桥工程有限公司 Multi-interface beam tower matching precision control method and device
CN113322816B (en) * 2021-05-23 2022-07-15 中铁九桥工程有限公司 Multi-interface beam tower matching precision control method and device
CN113684758A (en) * 2021-09-07 2021-11-23 中国铁建大桥工程局集团有限公司 Self-anchored suspension bridge construction auxiliary device
CN113684758B (en) * 2021-09-07 2023-12-05 中国铁建大桥工程局集团有限公司 Self-anchored suspension bridge construction auxiliary device
CN113668406A (en) * 2021-09-26 2021-11-19 河南国基建设集团有限公司 Municipal construction prefabricated pier erecting device and erecting method thereof

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