KR20150027989A

KR20150027989A - Assistant tool for crane

Info

Publication number: KR20150027989A
Application number: KR20130106501A
Authority: KR
Inventors: 최원도
Original assignee: 현대로템 주식회사
Priority date: 2013-09-05
Filing date: 2013-09-05
Publication date: 2015-03-13

Abstract

The present invention can facilitate the lifting operation of components such as a lower winch and a support device which are inaccessible by only a crane and a sling. In particular, a more stable lifting operation can be performed by using a plurality of lug assemblies and a center- And an auxiliary tool for a crane that can facilitate adjustment of the center of gravity.
An auxiliary tool for a crane according to the present invention is an auxiliary tool for a crane used for lifting a heavy object by lifting a heavy object by using a crane. The auxiliary tool includes an upper bar, a lower bar, A " C " -shaped frame including vertical bars; A pedestal detachably coupled to the other end of the lower bar to house the heavy object; And at least one lug assembly fixedly connected to the sling by a sliding movement or a fixing means along a longitudinal direction of the upper bar.

Description

Auxiliary tool for crane {ASSISTANT TOOL FOR CRANE}

The present invention relates to an auxiliary tool for a crane, and more particularly, to an auxiliary tool for a crane, which can facilitate the lifting work of components such as a lower winch and a support device stand which can not be accessed only by a crane and a sling, And more particularly, to an auxiliary tool for a crane capable of performing a more stable lifting operation by using the central assist sling and facilitating the adjustment of the center of gravity.

Generally, a crane is a general term of a machine that can lift a heavy object by using power and move it horizontally, and it is classified as a crane, a mobile crane, a derrick, and a feeder.

The crane is divided into a form in which the crane itself is fixed on the ground or on the deck of the ship and a self propelled crane mounted on the truck. The crane is fixed on the ground and has a mast or boom, The derrick crane, which manages lifting and unloading of heavy objects by manipulating it, can be divided into two types according to the frame type of structure: Guy derrick, Stiffleg derrick, Ginpole derrick, Hammer-head crane ).

Conventional cranes are capable of lifting an object by using a pulling hook provided at the end of a sling (wire rope) for lifting and unloading an object. In particular, in lifting an object of a heavy load, Or on the condition that the center of gravity is not biased to any one part in proportion to the volume along the length of the left and right sides.

If the center of gravity of the lifting object is tilted with respect to each towing point to be lifted, the impact of the heavy load on the frame of the crane is relatively large. In addition, when the heavy weight object is lifted at each point, There is a problem that a safety accident such as cutting of a sling or deformation of a boom is generated due to a deviation from a tolerance value of a lifting sling.

1 and 2, when an interference object is installed in an upper space of an object to be lifted, even if a sling is connected to both sides of the object to be lifted, it is impossible to lift the object due to interference between the sling and the interference object There was a problem.

Registration No. 0782730 (November 29, 2007)

It is an object of the present invention to solve the above problems of the prior art, and it is an object of the present invention to facilitate the lifting work of parts such as a lower winch and a support device stand which can not be accessed only by a crane and a sling, The present invention provides an auxiliary tool for a crane capable of more reliably lifting work using a central assist sling and facilitating adjustment of a center of gravity.

According to an aspect of the present invention, there is provided an auxiliary tool for a crane, which is used for lifting a heavy object by lifting a heavy object by using a crane. The auxiliary tool includes an upper bar, a lower bar, Shaped frame including a vertical bar interconnecting one end thereof; A pedestal detachably coupled to the other end of the lower bar to house the heavy object; And at least one lug assembly fixedly connected to the sling by a sliding movement or a fixing means along a longitudinal direction of the upper bar.

Preferably, the top bar is formed in a rectangular shape in cross section, and the lug assembly may be formed in a square tube shape inserted into the outer side of the top bar.

Preferably, the upper bar is provided with a plurality of position fixing holes at predetermined intervals along the length direction, the lug assembly is provided with a through hole corresponding to an arbitrary position fixing hole, and the through hole, The position of the lug assembly can be fixed by means of fastening means passing therethrough.

Preferably, the longitudinal bars may be divided into a plurality of sections so that the longitudinal bars can be detachably coupled to each other in series.

Preferably, the pedestal includes: an engaging plate detachably coupled to the other end surface of the lower bar; A pair of extension rods extending in a direction perpendicular to the coupling plate; And a pair of support plates spaced apart from each other by a predetermined distance above the pair of extension rods and formed with 'V' shaped grooves.

Preferably, the pedestal includes: an engaging plate detachably coupled to the other end surface of the lower bar; A pair of extension rods extending in a direction perpendicular to the coupling plate; A connecting rod connecting the ends of the pair of extension rods to each other; And an inclined plate formed on the upper portion of the pair of extending rods and formed in a downward slope toward the inside.

Preferably, the lug assembly comprises a plurality of lug assemblies, wherein the lug assemblies are provided with a center-of-gravity assisted sling connecting the plurality of lug assemblies to each other, and the sling may be connected to the gravity center assisted sling via a pulley.

The present invention as described above has an advantage that it is possible to facilitate the lifting work of parts such as a lower winch and a support device stand which can not be accessed by only a crane and a sling.

In addition, it is possible to detachably mount various pedestals so as to match the shape of the parts, which is advantageous in that it can be applied to various parts.

In addition, since the vertical bars are divided into a plurality of blocks, there is an advantage that storage and transportation are easy.

Further, a plurality of lug assemblies and the center-of-gravity assisted sling are used to provide a more stable lifting operation, and the center of gravity can be easily adjusted.

FIGS. 1 and 2 are views showing a problem occurring in lifting a lower winch with a conventional crane.
3 is a perspective view showing an auxiliary tool for a crane according to an embodiment of the present invention.
4 is a side view showing an auxiliary tool for a crane according to an embodiment of the present invention.
5 is an exploded perspective view showing an auxiliary tool for a crane according to an embodiment of the present invention.
6 to 9 are state diagrams showing the use state of an auxiliary tool for a crane according to an embodiment of the present invention.
10A is a perspective view illustrating a pedestal for a support device coupled to an auxiliary tool for a crane according to an embodiment of the present invention.
Fig. 10B is a perspective view showing the support device.
11A is a perspective view illustrating a pedestal for a lower winch coupled to an auxiliary tool for a crane according to an embodiment of the present invention.
11B is a perspective view showing the lower winch.
12 is a perspective view showing an auxiliary tool for a crane according to another embodiment of the present invention.
13 is a side view showing an auxiliary tool for a crane according to another embodiment of the present invention.
14 is an exploded perspective view showing an auxiliary tool for a crane according to another embodiment of the present invention.
15 to 18 are state diagrams showing the use state of an auxiliary tool for a crane according to an embodiment of the present invention.

The present invention may be embodied in many other forms without departing from its spirit or essential characteristics. Accordingly, the embodiments of the present invention are to be considered in all respects as merely illustrative and not restrictive.

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. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

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", "having", "having", and the like are intended to specify the presence of stated features, integers, steps, operations, components, Steps, operations, elements, components, or combinations of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and a duplicate description thereof will be omitted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The auxiliary tool for a crane according to the present invention is an auxiliary tool for a crane used for lifting the heavy objects A1 and A2 when lifting the heavy objects A1 and A2 using a crane, As well as the frame 100, the pedestal 200, and the lug assembly 300.

The frame 100 includes a top bar 110, a bottom bar 120, and a vertical bar 130 interconnecting one end of the top bar 110 and the bottom bar 120, Quot; C " shape.

The upper bar 110, the lower bar 120, and the vertical bar 130 are formed into a beam shape having a substantially rectangular cross section.

A plurality of position fixing holes 110h are formed at predetermined intervals along the length direction of the upper bar 110. Specifically, the plurality of position fixing holes 110h penetrate both side surfaces of the upper bar 110 And may be formed in two rows.

As shown in FIG. 5, the vertical bars 130 may be divided into a plurality of portions so as to be detachably coupled in series. Specifically, a lower end portion 130a-1 of the upper vertical bar 130a is divided into lower portions And can be inserted into the vertical bar 130b and interlocked with the bolt and nut.

The lower bar 120 may have a length shorter than the length of the upper bar 110. An end of the lower bar 120 may have a coupling plate 130b-1 for coupling the pedestal 200 And a plurality of holes for bolt connection are formed on the coupling plate 130b-1.

The pedestal 200 is detachably coupled to the other end of the lower bar 120 constituting the frame 100 and is a part where the heavy objects A1 and A2 are placed.

5 and 10A, the pedestal 200 includes an engaging plate 210 detachably coupled to an engaging plate 130b-1 provided on the other end surface of the lower bar 120, A pair of extension rods 220 extending in a direction perpendicular to the coupling plate 210 and a pair of spacers 220 spaced a predetermined distance apart from the pair of extension rods 220 and having a V- And may include a support plate 230.

The pedestal 200 configured as described above is formed in a configuration optimized for placing a heavy object A1 such as a support pedestal, as shown in FIG. 10B, V '-shaped grooves, it is possible to achieve stable seating.

11A, the pedestal 200 includes an engaging plate 210 detachably coupled to an engaging plate 130b-1 provided on the other end surface of the lower bar 120, A pair of extension rods 220 extending in a direction perpendicular to the coupling plate 210, a connecting rod 225 connecting the ends of the pair of extension rods 220 to each other, And a swash plate 240 formed on the upper portion and formed as a downward inclination toward the inside.

The pedestal 200 configured as described above is formed in a configuration optimized for placing a heavy object A1 such as a lower winch as shown in Figure 11B and the rounded portion r of the lower winch So that stable seating can be achieved as it is housed in the pair of swash plates 240.

The coupling plate 210 may further include an engagement groove 211 for receiving the projection b of the lower winch.

The lug assembly 300 is fixed to the frame 100 along the longitudinal direction of the frame 100 by sliding or fixing means and is connected to the sling S. [

The lug assembly 300 is formed in a rectangular tube shape to be inserted outside the frame 100 and a ring 302 to which a sling S is connected is formed integrally with the lug assembly 300.

The through hole 300h is formed in the lug assembly 300 so as to penetrate both side surfaces of the through hole 300h and a plurality of position fixing holes 110h formed in the frame 100, The position of the lug assembly 300 can be fixed to a specific position of the frame 100 by fixing means such as a fixing pin or the like which passes through the frame 110h.

The operation of the auxiliary tool for a crane constructed as described above will be described with reference to Figs. 6 to 9. Fig.

When a heavy object A1 such as a lower winch having a weight of approximately 700 kg is to be loaded, the vertical bar 130 before loading is adjusted to be inclined by about 15 degrees with respect to the vertical direction, as shown in Fig.

In this state, as shown in FIG. 7, when the heavy object A1 such as the lower winch having a weight of about 700 kg is loaded, the vertical bar 130, which has its center of gravity shifted and tilted, So that stable lifting is possible.

On the other hand, when a heavy object A2 such as a front support bar having a weight of about 200 kg is to be loaded, the vertical bar 130 before loading is tilted by about 9 degrees with respect to the vertical direction as shown in FIG. do.

In this state, as shown in FIG. 9, when a heavy object A2 such as a front support having a weight of approximately 200 Kg is loaded, the center of gravity is shifted and the inclined vertical bar 130 is vertically aligned with the vertical direction So that stable lifting is possible.

By using the auxiliary tool for a crane as described above, the lifting work of the heavy objects A1 and A2 such as the lower winch, the support device, and the like, which are located in a place where the crane and the sling S can not approach each other, can be facilitated .

12 to 14 are auxiliary tools for a crane according to another embodiment of the present invention. Hereinafter, auxiliary tools for a crane according to another embodiment of the present invention will be described with reference to FIGS. 12 to 14. FIG.

The auxiliary tool for a crane according to the present embodiment is the same or similar to the auxiliary tool for a crane except that a plurality of lug assemblies 300A and 300B are provided and a plurality of the lug assemblies 300A and 300B are configured I will explain the point mainly.

The lug assemblies 300A and 300B are fixed by sliding or fixing means along the longitudinal direction of the frame 100 constituting the frame 100 and are composed of a plurality of lugs.

Each of the lug assemblies 300A and 300B is formed into a square tube shape inserted into the outside of the frame 100, and the ring portion is integrally formed on the upper portion.

Each of the lug assemblies 300A and 300B is formed with a through hole 300h passing through both side surfaces thereof and is fixed to any one of a plurality of position fixing holes 110h formed in the through hole 300h and the frame 100 The positions of the respective lug assemblies 300A and 300B can be individually fixed to specific positions of the frame 100 by fixing means such as fixing pins or the like passing through the holes 110h.

A center-of-gravity auxiliary sling S 'for connecting the plurality of lug assemblies 300A and 300B to each other is connected to a ring 302 formed on the upper part of the plurality of lug assemblies 300A and 300B, S are connected to the center-of-gravity assisted sling S 'via the pulley D.

The operation of the auxiliary tool for a crane constructed as described above will be described.

When a heavy object A1 such as a lower winch having a weight of approximately 700 kg is to be loaded, the vertical bar 130 before loading is adjusted to be inclined by about 15 degrees with respect to the vertical direction as shown in Fig. 15 .

In this state, as shown in FIG. 16, when a heavy object A1 such as a lower winch having a weight of about 700 kg is loaded, the vertical bar 130, which has its center of gravity shifted and tilted, is vertically aligned with the vertical direction So that stable lifting is possible.

On the other hand, when a heavy object A2 such as a front support bar having a weight of about 200 kg is to be stacked, as shown in FIG. 17, the vertical bar 130 before being stacked is tilted by about 9 degrees with respect to the vertical direction I will.

In this state, as shown in FIG. 18, when a heavy object A2 such as a front support bar having a weight of approximately 200 kg is loaded, the vertical bar 130, which has its center of gravity shifted and tilted, is vertically aligned with the vertical direction So that stable lifting is possible.

Although the present invention has been described with reference to the preferred embodiments thereof with reference to the accompanying drawings, it will be apparent to those skilled in the art that many other obvious modifications can be made therein without departing from the scope of the invention. Accordingly, the scope of the present invention should be interpreted by the appended claims to cover many such variations.

100: frame
110: Top bar
110h: Position fixing hole
120: bottom bar
130: Vertical bar
130a: upper vertical bar
130b: Lower vertical bar
200: Stand
210:
220: Extension rod
225: connecting rod
230:
240: swash plate
300: lug assembly
300h: Through hole
A1, A2: Weight
D: Drape
S: Sling
S ': Center-weighted secondary sling

Claims

An auxiliary tool for a crane used for lifting a heavy object by lifting a heavy object using a crane,
Shaped frame comprising a top bar, a bottom bar, and a vertical bar interconnecting the top bar and one end of the bottom bar;
A pedestal detachably coupled to the other end of the lower bar to house the heavy object; And
And at least one lug assembly fixed to the upper bar by a sliding movement or fixing means and connected to the sling along the longitudinal direction of the upper bar.

The method according to claim 1,
Wherein the upper bar is formed in a square shape in cross section and the lug assembly is formed in a square tube shape inserted into the outer side of the upper bar.

3. The method according to claim 1 or 2,
A plurality of position fixing holes are formed at predetermined intervals along the length of the upper bar. The lug assembly is provided with through holes corresponding to arbitrarily selected position fixing holes. The through holes and optional position fixing holes are passed through Characterized in that the position of the lug assembly is fixed by means of a fastening means.

The method according to claim 1,
Wherein the vertical bars are divided into a plurality of sections so as to be detachably coupled in series with each other.

The method according to claim 1,
The pedestal,
An engaging plate detachably coupled to the other end surface of the lower bar;
A pair of extension rods extending in a direction perpendicular to the coupling plate; And
And a pair of support plates spaced apart from each other by a predetermined distance at an upper portion of the pair of extension rods and having a V-shaped groove.

The method according to claim 1,
The pedestal,
An engaging plate detachably coupled to the other end surface of the lower bar;
A pair of extension rods extending in a direction perpendicular to the coupling plate;
A connecting rod connecting the ends of the pair of extension rods to each other; And
And an inclined plate formed on the upper portion of the pair of extending rods and inclined downward toward the inside.

The method according to claim 1,
Wherein said lug assembly is comprised of a plurality of lug assemblies, said lug assemblies being provided with a center-of-gravity assisted sling connecting said plurality of lug assemblies together, said sling being connected to said center-of-gravity assisted sling via a pulley.