KR101826166B1

KR101826166B1 - rope horizontal extension unit

Info

Publication number: KR101826166B1
Application number: KR1020160019887A
Authority: KR
Inventors: 양중목
Original assignee: 삼성중공업(주)
Priority date: 2016-02-19
Filing date: 2016-02-19
Publication date: 2018-02-06
Also published as: KR20170098026A

Abstract

The present invention provides a rope horizontally extending unit. The rope horizontally extending unit of the present invention comprises: a support stand installed vertically below a hook of a crane; Wire extension bars hinged to the top of the strut and provided to expand or collapse in a radial direction and guide the lifting wire rope connected to the hook; And a driving member that provides a driving force to unfold or unfold the wire extension bars.

Description

A rope horizontal extension unit

The present invention relates to a rope horizontally extending unit for block lifting that extends horizontally lifting wire ropes to be connected to a block when lifting a block of a ship or an offshore structure using a crane.

In shipyard, block lifting work of ship and offshore structure is performed by using crane. There are various kinds of crane such as overhead crane, jib crane, gantry crane, cable crane depending on function and form.

In order to perform the block lifting operation, it is necessary to prepare a plurality of lifting wire ropes to be fastened to the lifting lugs provided in the block. It is difficult to work due to interference with the block fittings during the work for lifting wire rope fastening do.

Generally, in order to connect a hook and a block hanging on a crane by a lifting wire rope, a hook is placed on a vertical upper end of a central portion of the block, and one end of each rope is fixed to a hook and the other end of each rope is provided on a block edge The lifting lug is fixed to the lifting lug, and the weight is lifted and transported while forming a structure like a pyramid having a peak at a hook.

However, if the width or length of the block is long and the wall is protruding from the top of the block, it is necessary to pull heavy lifting wire rope with several manpower, resulting in excessive work time and safety of workers.

Korean Patent Laid-Open No. 10-2009-0124410 (Dec. 3, 2009)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a lifting wire horizontally extending unit that can more easily perform an operation of connecting a lifting wire to a lug of a heavy object during the transportation of a heavy object using a crane.

The problems to be solved by the present invention are not limited thereto, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a crane comprising: Wire extension bars hinged to the top of the strut and provided to expand or collapse in a radial direction and guide the lifting wire rope connected to the hook; And a driving member that provides a driving force to unfold or unfold the wire extension bars.

Further, each of the wire extension bars may further include a guide member for guiding the lifting wire rope so that the lifting wire rope is not separated from the wire extension bar.

Further, the support bar may include an upper ring fixedly installed at the upper end thereof; And a lower ring slidably installed at the lower end along the support bar.

And a connecting bar hinged to the lower ring at one end and hinged at the other end to the wire expanding bar and pushing or pulling the wire expanding bar as the lower ring is lifted and lowered, .

In addition, a hook attaching / detaching member may be further provided at an upper end of the support bar so as to be attachable / detachable to a lower portion of the hook of the crane.

Further, the hook releasing member may be any one of an electromagnet fixed to the hook by a magnetic force or a ring which spans the hook.

The driving member may further include a pull rope connected to the lower ring; And a winch fixedly installed on the upper end of the support platform for winding or uncoiling the pull rope.

In addition, the driving member may include a hydraulic cylinder installed on the support column to elevate the lower ring.

The strut may further include a rotating head portion rotatably mounted on the upper ring for setting the direction of the wire expanding bars.

According to an embodiment of the present invention, the lifting wire rope can be easily connected to the lugs of the block by increasing the spacing of the lifting wire ropes connected to the crane hooks.

The effects of the present invention are not limited to the above-mentioned effects, and the effects not mentioned can be clearly understood by those skilled in the art from the present specification and the accompanying drawings.

1 is a perspective view of a rope horizontally extending unit according to a first embodiment of the present invention.
2 is a side view showing a state in which the rope horizontal extending unit shown in Fig. 1 is unfolded.
3 is a side view showing a state in which the rope horizontally extending unit is mounted on the crane hook.
Fig. 4 is a side view showing the lifting wire rope extended by the rope horizontal extending unit in Fig. 3. Fig.
5 is a view showing a lifting wire rope connected to a block by a rope horizontally extending unit;
Fig. 6 is a modification of the hook releasing member.
Fig. 7 is another example of the hook releasing member.
8 is a view showing a modification of the guide member.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout the specification and claims. The description will be omitted.

FIG. 1 is a perspective view of a rope horizontal extending unit according to a first embodiment of the present invention, and FIG. 2 is a side view showing a state in which the rope horizontal extending unit shown in FIG. 1 is unfolded.

The rope horizontally extending unit according to the first embodiment is a device for horizontally extending lifting wire ropes to be connected to a block when a block such as a ship or an offshore structure is to be lifted using a crane.

As shown in FIGS. 1 and 2, the rope horizontally extending unit 10 can be detachably mounted on a crane hook 20 connected to a crane. 5, the rope horizontally extending unit 10 is mounted to the crane hook 20 to connect the lifting wire ropes 30 to the lugs 1100 of the block 1000. When the lifting wire rope 30 is extended horizontally by the rope horizontally extending unit 10 and connected to the lugs 1100 of the block 1000, the horizontally extending unit 20 is moved for block- Can be removed from the crane hook (20).

The rope horizontally extending unit 10 may include a strut 100, a wire extension bar 200, connecting bars 300, and a driving member 400.

The pedestal 100 may have a hollow interior to minimize its own weight. The top ring 110 and the bottom ring 120 may be respectively installed on the pedestal 100. The upper ring 120 may be fixedly mounted on the upper part of the support platform 100. The lower ring 120 may be slidable along the support platform 100 below the upper ring. Although not shown, a guide for assisting a sliding operation of the lower ring 120 may be provided along the length of the support pedestal 100. [

The support bar 100 may be detachably installed on the bottom of the crane hook 20. For this purpose, a hook attachment / detachment member 500 may be provided on the upper end of the support bar 100. [

The hook releasing member 500 may include an electromagnet fixed to the crane hook 20 by a magnetic force. The electromagnet preferably has sufficient magnetic force to withstand the load and angular external force of the lifting wire rope to be guided. The hook releasing member 500 may be various means that can attach and detach the cantilever hook 100 to the crane hook 20 in addition to the electromagnet type shown in Fig.

The wire extension bar 200 may be hinged to the upper end of the pedestal 100. In one example, the wire extension bar 200 may be provided such that one end is hinged to the top ring 110 to be unfolded or folded in the radial direction. In the present embodiment, four wire extension bars 200 are installed at equal intervals in the upper ring 110, but the present invention is not limited thereto, and the number of installation and installation intervals of the wire extension bars 200 are connected to the crane hooks 20 May be varied depending on the number of lifting wire ropes 30. The wire extension bar 200 is hinged to the upper ring 110. However, the present invention is not limited thereto, and in the case where the upper ring is omitted, the wire extension bar 200 is connected to the upper end of the strut 100 As shown in FIG.

The wire extension bar 200 may be provided with a guide member 210. The guide member 210 may be provided at the end of the wire extension bar 200 to guide the lifting wire rope 30. The guide member 210 has a concave curved surface portion 212 to prevent the lifting wire rope 30 from escaping out of the wire extension bar 200 and to provide a stable horizontal extension.

One end of the connection bar 300 is hinged to the lower ring 120 and the other end is hinged to the wire extension bar 200. The connecting bar is positioned between the strut and the wire extension bar when the rope horizontally extending unit 10 is unfolded and serves to adjust the state of the wire extension bar 200 supporting the lifting wire rope 30. The connection bar 300 may be constructed in a linear shape using a rigid metallic material and may be hinged to the wire expanding bar 200 so that the connecting bar 300 can be rotated so that the connecting portion can be rotated when it is folded and folded . Thus, when the rope horizontally extending unit 10 is unfolded, it is supported in a straight diagonal direction between the support stand 100 and the wire extension bar 200.

When the lower ring 120 is moved upward by the driving member 400, the connection bar 300 pushes the wire extension bar 200 folded and the wire extension bar 200 When the lower ring 120 is lowered by the driving member 400, the wire bar 200 is folded as the connection bar 300 pulls the expanded wire extension bar 200.

The lifting and lowering of the lower ring 120 is provided by the driving member 400. Various means for linearly moving the lower ring 120 on the pedestal 100 can be applied to the driving member 400. In one example, the drive member 400 may include a pull rope 410 and a winch 420. The pull rope 410 is connected to the lower ring 120. The winch 420 may be installed at the top of the support stand 100 to wind or unwind the pull rope 410.

In the present embodiment, the driving member composed of the pulling rope and the winch is shown. However, the driving member is not limited thereto, and various linear elevating means such as a hydraulic cylinder system, a gear system, and a chain system capable of lifting and lowering the lower stage ring Of course it is.

Fig. 3 is a side view showing a state where the rope horizontal extending unit is mounted on a crane hook, Fig. 4 is a side view showing a state where the lifting wire rope is extended by the rope horizontal extending unit in Fig. 3, And connected to the block by a rope horizontally extending unit.

3 to 5, the rope horizontally extending unit is mounted on the bottom of the crane hook. The lifting wire rope 30 connected to the crane hook 20 is seated in the guide member 210 of the wire extension bar 200. [ When the lower ring is moved upward by the driving member, the connecting bar pushes the wire expanding bar 200 and the wire expanding bar 200 is unfolded. By the unfolding of the wire extender bars 200, the lifting wire rope 30 widens the gap between the ropes in the horizontal direction from L1 to L2.

The operator performs a rope connecting operation in which the lower end of the lifting wire rope 30 is connected to the lug 1100 of the block in a state in which the lifting wire rope 30 is spaced apart.

The rope horizontally extending unit 10 of the present invention is capable of automatically lifting the lifting wire rope 30 without pulling the heavy lifting wire rope 30 with several attractive forces when the width or length of the block is long and the wall is projected to the top of the block, The operation of connecting the lifting wire rope 30 to the lug 1100 of the block can be performed quickly and safely.

Fig. 6 is a modification of the hook releasing member.

6, the hook releasing member 500a may include a rotary head portion 550 rotatably installed on the cradle 100. As shown in FIG. In one example, the rotating head portion 550 of the hook releasing member 500a is rotatably mounted on the bed rest 100 via a bearing 560. [

As described above, the rope horizontal extending unit 10 of the present embodiment can more easily orient the wire extension bars 200 by allowing the column 100 to rotate on the rotary head unit 550.

Fig. 7 is another example of the hook releasing member.

7, the hook releasing member 500b may include at least one linking ring 590 provided on the upper portion of the support stand 100. [ The connecting link 590 may be installed over the crane hook 20. With this connection ring 590, it is easy to attach and detach the rope horizontally extending unit 10 to the crane hook 20, and its structure can be simple and stable compared to the electromagnet system.

8 is a view showing a modification of the guide member.

8, the guide member 210a may be rotatably installed on the wire expanding bar 200 in a ball joint 220 manner.

The ball joint 220 includes a ball stud 222 provided on the bottom surface of the guide member 210a and serving as a ball joint and a ball stud 222 mounted on the top surface of the wire expanding bar 200, And a ball socket 224 that is installed to surround the outer circumference and allows the ball stud 222 to flow within an operating angle range.

The guide member 210a is installed on the wire extension bar 200 by the ball joint 220 so that the lifting wire rope 30 can be guided more fluidly. For example, the guide member 210a can be easily rotated to change the connecting angle of the lifting wire rope 30 by being pivoted according to the position of the lug 1100 of the block to which the lifting wire rope 30 is to be connected.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: rope horizontally extending unit 100:
200: wire extension bar 300: connection bar
400: driving member

Claims

A support stand vertically installed under the hook of the crane;
Wire extension bars hinged to the top of the strut and provided to expand or collapse in a radial direction and guide the lifting wire rope connected to the hook;
A driving member for providing a driving force to unfold or unfold the wire extension bars; And
And a hook releasable member detachably attachable to a lower portion of the hook of the crane at an upper end of the supporting bar;
Each of the wire extension bars
And a guide member for guiding the lifting wire rope so that the lifting wire rope is not released from the wire extension bar, wherein the guide member is ball-
Wherein the hook releasing member includes an electromagnet detachably attached to a hook of the crane by a magnetic force.

delete

The method according to claim 1,
The holding platform
An upper ring fixedly installed on the upper portion;
And a lower ring slidably installed at the lower end along the support bar.

The method of claim 3,
Further comprising a connecting bar hinged to the lower ring at one end and hinged to the wire expanding bar at the other end and pushing or pulling the wire expanding bar in accordance with the lifting and lowering of the lower ring,
And the lower ring is slid by the driving member.

delete

The method of claim 3,
The holding platform
Further comprising a rotating head portion rotatably disposed above the upper ring for direction setting of the wire extension bars.