KR101582102B1 - Clamp for lifting t-bar or h-beam - Google Patents

Abstract

The present invention relates to a clamp for lifting a Tiba or H. beam, comprising: a first and a second upper operation arm rotatably and simultaneously fixed to a shackle using a crane hook, First and second lower operation arms rotatably fixed to the other ends of the first and second upper operation arms; An operation shaft inserted through the middle of the length of the first and second lower operation arms and rotatably supporting the first and second lower operation arms; The upper end of each of which is rotatably staggered and fixed on the operating shaft, and the lower end of the first and second hooks is engaged with the lower end surface of the conveyed object including the < RTI ID = 0.0 & And a second gripping arm, wherein the first and second upper operation arms are assembled with a pair of plates each having a convex arc shape outwardly interposed with a gap holding hole therebetween; The first and second lower operation arms are each formed into a convex arc shape inward to have an opposite shape to the first and second upper operation arms; The lower ends of the first and second lower operation arms form first and second cams having a downward convex shape; The first and second lower operation arms are provided at both sides of the middle of the length, and the first and second upper operation arms prevent the first and second upper operation arms from falling further. When the lower ends of the first and second lower operation arms are disposed so as to be opposed to and vertically opposed to the first and second hook portions, the lower ends of the first and second lower operation arms are engaged with the upper And a clamping member for clamping the lifting member.
According to the present invention, since the high-load conveyed object is clamped while being gripped on both the upper and lower surfaces simultaneously, the conveying object is not disturbed and the safety is extremely improved, Therefore, convenience of use is increased, and the load is maintained in a uniformly dispersed state, so that no unbalanced load is generated, local cracks or fractures can be prevented, and longevity can be achieved.

Description

CLAMP FOR LIFTING T-BAR OR H-BEAM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp for lifting a T-bar or H-beam, and more particularly to a lifting clamp for lifting a heavy load such as a TIBA or HIB beam horizontally and safely And to a vertically lowered position at the next desired position.

Generally, when manufacturing a ship, it is divided into several blocks. Generally, it is common to manufacture a ship by welding the blocks individually.

Since the weight of the steel plate for manufacturing the block is heavy, the steel plate is moved using a crane. At this time, the steel plate is clamped and moved by a clamp.

For example, representative high-mass deliveries include T-bar or H-beam.

However, since such high-load conveyed articles are mainly long, a fixing means having a considerable strength and a stable clamping structure is required in order to lift them vertically and then horizontally convey them.

Conventionally, a vertical clamp is used as in the following patent documents. This is because the cam and the jaw are engaged with only one side of the flange of the conveyed object by means of a spring or the like, fixedly gripped, and horizontally conveyed, And it is concentrated at a specific point, so there are many disadvantages such as a high risk of fragility of a vulnerable site and a safety accident.

Moreover, since the deflected load is concentrated on the vulnerable part, the fatigue strength is weak and it has the disadvantage of hindering the longevity, and since the heavy load can not be firmly gripped, the material is removed or removed during transportation, .

1. Publication No. 2001-0000916 (January 15, 2001) 2. Registration No. 0370443 (2004.12.06) 3. Registration No. 0394103 (Aug. 22, 2005)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems in the prior art, and it is an object of the present invention to provide a conveying apparatus and a conveying apparatus which are capable of simultaneously pressing a lower surface and an upper surface of a conveyed object, And a clamp for lifting a TIBA or H. beam so that the clamp can be fixedly and safely gripped in a secure and firmly gripped state.

In order to achieve the above object, according to the present invention, there is provided a shackle for a crane, comprising: first and second upper operation arms rotatably and axially fixed at angularly opposite ends; First and second lower operation arms rotatably fixed to the other ends of the first and second upper operation arms; An operation shaft inserted through the middle of the length of the first and second lower operation arms and rotatably supporting the first and second lower operation arms; The upper end of each of which is rotatably staggered and fixed on the operating shaft, and the lower end of the first and second hooks is engaged with the lower end surface of the conveyed object including the < RTI ID = 0.0 & And a second gripping arm, wherein the first and second upper operation arms are assembled with a pair of plates each having a convex arc shape outwardly interposed with a gap holding hole therebetween; The first and second lower operation arms are each formed into a convex arc shape inward to have an opposite shape to the first and second upper operation arms; The lower ends of the first and second lower operation arms form first and second cams having a downward convex shape; The first and second lower operation arms are provided at both sides of the middle of the length, and the first and second upper operation arms prevent the first and second upper operation arms from falling further. When the lower ends of the first and second lower operation arms are disposed so as to be opposed to and vertically opposed to the first and second hook portions, the lower ends of the first and second lower operation arms are engaged with the upper And a clamping member for clamping the lifting member.

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According to the present invention, since the object to be conveyed with high load is simultaneously clamped on both the upper and lower surfaces, it is conveyed, so that there is no fear of detachment and the safety is extremely improved.

In addition, since the object is gripped automatically at the time of lifting the object, convenience in use is increased.

In addition, since the load is maintained in a uniformly dispersed state, deflection does not occur, local cracks or fractures can be prevented, and longevity can be achieved.

1 and 2 are exemplary perspective views of a clamp according to the present invention viewed at different angles.
3 and 4 are a front view and a rear view of a clamp according to the present invention.
Figure 5 is an exemplary side view of a clamp according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

As shown in Figs. 1 to 5, the clamps for lifting the TeVa or H. beam according to the present invention are characterized in that they are configured to automatically clamp by a plurality of operating arms which operate in a scissoring manner simultaneously with lifting.

To this end, the present invention includes a pair of first and second upper actuating arms 110, 120 rotatably fixed to the shackle 100.

The first and second upper operation arms 110 and 120 are arm members having a substantially arc-like shape, and the convex portions are disposed so as to face outward.

The upper ends of the first and second upper operation arms 110 and 120 are hinged together on the shackle 100 through the upper shaft 102 in a state where they are overlapped with each other.

At this time, the shackle 100 is a member used for a wire harness so that a crane can be used.

In addition, the first and second upper operation arms 110 and 120 are each configured such that two piece members are assembled with a space holding means TR interposed therebetween, so that the link can be inserted between these pieces.

That is, the lower ends of the first and second upper operation arms 110 and 120 have a structure in which a link is inserted and fixed between the respective one of the first and second upper operation arms 110 and 120, (212, 222).

At this time, the first and second lower operation arms 210 and 220 are also formed in an arcuate shape, but are disposed in a direction opposite to the first and second upper operation arms 110 and 120, that is, the convexly curved portions face each other inward As shown in FIG.

The first and second upper operation arms 110 and 120 and the first and second lower operation arms 110 and 120 are connected to the first and second upper operation arms 110 and 120, The arms 210 and 220 can be operated in the form of scissors.

Here, the lower ends of the first and second lower operation arms 210 and 220 are convexly downwardly formed. The lower ends of the first and second lower operation arms 210 and 220 are formed in a cam shape, Respectively.

Therefore, when the first and second lower operation arms 210 and 220 are rotated in a staggered manner about the operation shaft 300, the first and second cams 214 and 224 push the upper surface of the conveyed object positioned downward.

In addition, the first and second lower operation arms 210 and 220 have first and second stepped surfaces 216 and 226 formed on both sides thereof to perform a kind of stopper function when the first and second upper operation arms 110 and 120 descend. Thereby ensuring the original activity of the operation.

On the other hand, one end of a pair of first and second gripping arms 410 and 420 having a 'C' shape is staggered and fixed at the same time on the operation shaft 300 so as to be rotatable about the operation shaft 300.

The first and second gripping arms 410 and 420 are formed integrally with the first and second upper gripping arms 410 and 420 while maintaining the gap between the two gripping members like the first and second upper gripping arms 110 and 120, And the lower ends of the first and second lower operation arms 210 and 220 are inserted into the center of each arm width direction.

In particular, the first and second hooking portions 412 and 422, which are bent at the lower ends of the first and second gripping arms 410 and 420, are held in a wrapping manner so as to wrap the object C (see FIG. 3) C is hooked.

A handle 500 is provided on the outer surface of one of the first and second gripping arms 410 and 420. The handle 500 is inserted into the handle hinge 510 and can be rotated.

The present invention having such a configuration has the following operational relationship.

A crane wire is hooked to the shackle 100 for conveying the conveyed object C, and the clamp of the present invention is placed on the conveyed object C.

In this state, when the clamp is lowered, the first and second gripping arms 410 and 420 are first brought into contact with the upper surface of the object C to be delivered.

Then, the first and second gripping arms 410 and 420 stop moving.

However, since the first and second lower operation arms 210 and 220 and the first and second upper operation arms 110 and 120 located above the first and second upper operation arms 110 and 120 continuously descend, the first and second grip arms 410 and 420 are opened while scissoring.

When the first and second gripping arms 410 and 420 are opened to some extent, the worker holds the handle 500 and the lower end surface of the conveyed object C comes to the first So that it is seated on the two hook portions 412, 422.

In this state, when the shackle 100 is lifted by the crane, the first and second upper operation arms 110 and 120 and the first and second upper operation arms 110 and 120 are rotated around the upper shaft 102, the first and second lower shafts 212 and 222, The first and second lower operation arms 210 and 220 and the first and second gripping arms 410 and 420 are operated as if they are scissors so that the first and second hooking portions 412 and 422 securely grip the conveyed object C .

At the same time, the first and second cams 214 and 224, which are the lower ends of the first and second lower operation arms 210 and 220, naturally press the upper surface of the conveyed object C while pressing.

Therefore, the conveyed object C is securely gripped in the form of a lower latch and an upper latch, so that it can be safely gripped and transferred without fear of separation or removal during transportation.

That is, this structure is a very important feature in the conventional case, since there is no example in which the upper and lower portions of the conveyed object C are automatically wrapped and fixed.

The first and second upper operation arms 110 and 120 and the lower operation arms 210 and 220 are automatically opened as soon as the crane is lowered and the conveyed object C reaches the seating position, The gripping state of the arms 410 and 420 is released.

In this state, if necessary, the operator can pull the handle 500 to easily and quickly relieve the state of engagement with the object C to be conveyed.

As described above, the clamp according to the present invention can naturally perform rigid gripping and fixing of a conveyed object only by lifting after gripping.

Therefore, it is possible to secure the safety of the work, and the convenience and efficiency of the work can be improved.

In addition, because it operates in the form of a scissors, the load is not concentrated at a single point, so the offset load can be prevented, uniform load distribution can be achieved, and the longevity of the clamp can be achieved.

100: shackle 110: first upper operation arm
120: second upper operation arm 210: first lower operation arm
220: second lower operating arm 300: operating shaft
410: first gripping arm 420: second gripping arm

Claims (4)

First and second upper operation arms which are rotatably and simultaneously fixed to the shackle using crane hooks in such a manner that their ends are staggered;
First and second lower operation arms rotatably fixed to the other ends of the first and second upper operation arms;
An operation shaft penetrating the middle of the length of the first and second lower operation arms to operate the first and second lower operation arms in a scissors manner by rotatably supporting the first and second lower operation arms;
The upper end of each of which is rotatably staggered and fixed on the operating shaft, and the lower end of the first and second hooks is engaged with the lower end surface of the conveyed object including the < RTI ID = 0.0 & , And two gripping arms,
Wherein the first and second upper actuating arms are arm-shaped members having arc shapes, wherein the convex portions are disposed outwardly and the upper ends are mutually fixed in a hinged manner on the shackle through the upper shaft in a state of overlapping each other, Two piece members are assembled so as to sandwich the link between the respective piece members, with the gap holding member interposed therebetween;
The first and second lower operation arms are each formed into a convex arc shape inward to have an opposite shape to the first and second upper operation arms;
The lower ends of the first and second lower operation arms are convex downward, and are formed to be offset from each other at a point past the operation axis to form the first and second cams;
The first and second upper operation arms are engaged with the first and second upper operation arms so as to prevent the first and second upper operation arms from descending.
The first and second gripping arms are integrally formed with the two gripping members being spaced from each other. The first and second gripping arms are rotatable in a form in which the lower ends of the first and second lower operating arms are fitted in the width- Assembled to be operable;
A handle is provided on an outer surface of one of the first and second gripping arms, and the handle is pivoted by being pinched by the handle hinge;
When the lower ends of the first and second lower operation arms are disposed so as to be opposed to and vertically opposed to the first and second hook portions, the lower ends of the first and second lower operation arms are engaged with the upper Wherein the clamping member is configured to press the surface of the clamp. delete delete delete

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