KR101692014B1 - Hook connection device for extended range operation of crane and crane having the same - Google Patents

Abstract

A hook connecting device for extending the working range of the crane and a crane including the hook connecting device.
According to an aspect of the present invention, there is provided a hook connecting device connected to a main hook provided in a crane for extending a working range of the crane, comprising: a main body hooked to a lower portion of the main hook, ; A first connecting portion connecting one longitudinal side of the body portion and a front end of the main hook; And a second connecting portion connected to the body portion and the first connecting portion in a triangular shape and connecting the other longitudinal side of the body portion with the rear end of the main hook, the hook connecting device for extending the working range of the crane can do.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hook connecting device for extending the working range of a crane, and a crane including the hook connecting device.

Embodiments of the present invention relate to a hook connecting device for extending the working range of a crane and a crane including the hook connecting device.

Generally, a crane is a machine or machine that uses a power to han- dle a heavy object and transports it in up, down, left and right, or in a horizontal or pivoting direction.

These cranes are provided in various forms suitable for their use, but they are classified into various types according to their structures, shapes and uses.

For example, ceiling cranes, jib cranes, leg cranes, and cable cranes are introduced. And since these cranes transport heavy objects, once the accident occurs, there is a great danger of leading to a serious disaster, so safety is an important issue.

On the other hand, a crane such as a hook is usually provided with a hook, and a heavy object is moved to a predetermined position in a state where the heavy object is hooked on the hook.

However, depending on such a method, the working range is limited even when the hook is located as far as possible in the crane. In particular, when the hook is moved to a position close to the wall surface of the workplace, There were many difficulties in the case.

Therefore, it is required to develop a device that can extend the working range of the crane by utilizing the hook provided in the existing crane.

Korean Patent Publication No. 1997-7003908

The present invention provides a hook connecting device and a crane including the hook connecting device for extending the working range of a crane that can easily attach and detach to and from a hook in a crane to extend the working range of the crane.

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

According to an aspect of the present invention, there is provided a hook connecting device connected to a main hook provided in a crane for extending a working range of the crane, comprising: a main body hooked to a lower portion of the main hook, ; A first connecting portion connecting one longitudinal side of the body portion and a front end of the main hook; And a second connecting portion connected to the body portion and the first connecting portion in a triangular shape and connecting the other longitudinal side of the body portion with the rear end of the main hook, the hook connecting device for extending the working range of the crane can do.

The body part may include guide rails provided with guide grooves along the longitudinal direction of the body part. And a moving block formed to be positionally movable along the guide rail and coupled with the extension hook protruding downward through a lower end thereof.

The first connection part includes a first fixing body fixed to one longitudinal side of the body part and having a first hinge; Wherein the first hinge has a first ring connected to the first fixed body and rotatably connected through the first hinge and the other end having an opening at an end thereof, A first fixing member including a first fixing member; And a first support member inserted and fixed at one end thereof through the opening portion of the first hook, and the other end of the first support member being engaged with the end hook of the main hook.

And the other end is connected to the rear end of the main hook from the bottom to the top end of the main hook and fixed to the rear end of the main hook so that the other end is connected to the rear end of the main hook And a reinforcing member may be provided between the one end portion and the body portion.

The second connection portion may include a second fixing body fixed to the other longitudinal end of the body portion and having a second hinge; A second hinge having one end connected to the second fixed body and rotatably connected through the second hinge and the other end having a second open end at an end thereof, A second fixing member including a second fixing piece; And a second support member which is inserted and fixed to a hook connection portion provided at a rear end of the main hook, and the second support member is inserted and fixed at one end thereof through the opening portion of the second loop.

Wherein the hook connecting portion includes a connecting body which is fixed or separated from the rear end of the main hook by using a plurality of fastening members, To a predetermined height.

The hook connecting portion may include a third fixing piece elastically supported to open and close an upper opening portion of the connection body.

And a fastening portion extending from the connection body and being fixed by the plurality of fastening members so as to be disposed between the connecting body and the rear end of the main hook.

And a reinforcing portion formed on the opposite side of the coupling portion with respect to the coupling hole and slantingly connected to increase the cross-sectional area from the upper end to the lower end.

And a counterweight for compensating deflection of the body portion in consideration of the weight of the weight hanging from the extension hook, wherein the counterweight can be located on the opposite side corresponding to the position of the extension hook.

According to another aspect of the present invention, there is provided a crane including a hook connecting device for extending the working range of the crane.

According to the embodiments of the present invention, the operation range of the crane can be extended by easily attaching and detaching it to the hook in the crane.

In addition, there is an advantage in that stability of work can be ensured by preventing free detachment in a state of being connected to a hook in a crane.

Further, there is an advantage that the position of the extension hook provided in the hook connecting device can be changed.

In addition, there is an advantage that the weight deflection due to a heavy object can be compensated by considering the weight balance of the body portion of the hook connecting device.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a simplified illustration of a hook connection device for extending the working range of a crane in accordance with an embodiment of the present invention.
2 is a simplified illustration of a hook connection device for extending the working range of a crane according to another embodiment of the present invention;
3 is a view for explaining an effect of extending a working range of a crane according to an embodiment of the present invention;
4 is a view schematically showing a structure in which a guide rail and a moving block are formed in a body part according to another embodiment of the present invention.
Figs. 5 to 7 are enlarged views of regions A, B, and C of Fig. 1; Fig.
8 is an exemplary illustration of various shapes of a body portion according to embodiments of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a hook connecting device and a crane including the hook connecting device for extending the working range of the crane of the present invention will be described in detail with reference to the accompanying drawings.

1 is a simplified view of a hook connection device for extending the working range of a crane according to an embodiment of the present invention.

Referring to FIG. 1, a hook connecting apparatus 100 connected to a main hook 101 provided in a crane 1 and extending a working range of the crane 1 includes a body 110, 120, a second connection part 130, and a hook connection part 140.

A main cable 3 is provided at the end of the crane 1 and various types of connection ports 5 are fixed to the lower end of the main cable 3. A hook ) 101 may be fixed.

The main hook 101 may be movable to an end of the crane 1. However, it is difficult to place a heavy object in a region where the main hook 101 can not reach the structure of the crane 1, for example, a corner near a wall surface of a workplace, or to lift a heavy object at the place.

Therefore, in the present invention, the hook connecting device 100 including the body 110, the first and second connecting parts 120 and 130, and the hook connecting part 140, which can be connected to the main hook 101, So that the working range of the crane can be extended.

The body 110 may be disposed laterally (i.e., transversely) at a predetermined distance from the lower portion of the main hook 101. Further, another hook (hereinafter, referred to as a connecting hook) 111 protruding downward may be provided at the lower end of the body 110.

Since the body portion 110 should be structurally rigid, a high strength steel or the like may be used, and various materials may be used. Further, the shape of the body 110 need not be limited to the illustrated form, and may be changed into various shapes.

The first connection part 120 serves to connect between one side in the longitudinal direction of the body part 110 (i.e., the left side in FIG. 1) and a front end of the main hook 101 (i.e., a looped end).

The second connection part 130 may be connected to the body part 110 and the first connection part 120 in a triangular shape. 1) of the main body 110 and the rear end of the main hook 101 (more specifically, the hook connecting portion 140). The second connection part 130 may be a pin-shaped steel or a bar-shaped steel.

According to this structure, since the first and second connecting portions 120 and 130 are firmly fixed to the main hook 101, the working range of the extending hook 111 provided at the end of the body portion 110 is Can be longer than the working range of the main hook 101.

2 is a simplified view of a hook connection device for extending the working range of a crane according to another embodiment of the present invention.

Referring to FIG. 2, it can be seen that the second connection part 130 is vertically connected between the other longitudinal side of the body part 110 and the rear end of the main hook 101. In this case, it is preferable that the second connection part 130 is formed of a bar-shaped steel.

One end of the second connection part 130 is fixed to the other end in the longitudinal direction of the upper end of the body 110 and the other end is connected to the upper end of the main hook 101 through a rear end of the main hook 101, And may be fixed and directly connected by a fastener. Thus, the other end of the second connection part 130 can be vertically detachable through the rear end of the main hook 101. In order to secure structural rigidity, a reinforcing member R may be further provided at a connection portion between one end of the second connection portion 130 and the body portion 110. The reinforcing member R May have various shapes.

In this case, the second connecting portion 130 and the main hook 101 can support most of the weight of the weight suspended from the extension hook 111. For this purpose, the length of the second connecting portion 130 is relatively short , And it is preferable that the thickness is further increased.

3 is a view for explaining an effect of extending the working range of a crane according to an embodiment of the present invention.

Referring to FIG. 3, it is assumed that a working range in which a conventional main hook 101 can reach is L, when using the hook connecting apparatus 100 according to an embodiment of the present invention, The effect that the working range is further extended by the distance L 'can be obtained.

On the other hand, the extension hook 111 can be provided in a position-adjustable form.

Referring to FIG. 4, a guide rail 113 may be formed on the inner side of the body 110, and a moving block 115 may be movable along the guide rail 113. And the extension hook 111 may be coupled through the lower end of the moving block 115. [

The guide rail 113 may include a linear guide groove along the longitudinal direction of the body 110. The upper end of the movement block 115 may be linearly movable So that the position of the extension hook 111 can be adjusted.

The first connection part 120 includes a first fixing body 121, a first fixing member 123, and a first supporting member 125.

The second connection portion 130 includes a second fixing body 131, a second fixing member 133, and a second supporting member 135.

Next, the first connection unit and the second connection unit will be described in detail.

FIG. 5 is an enlarged view of the area A in FIG. 1, and a preferable exemplary form of the first connection part 120 is specifically shown.

Referring to FIG. 5, the first connection part 120 connects one longitudinal side of the body 110 with a front end of the main hook.

The first connection part 120 includes a first fixing body 121, a first fixing member 123, and a first supporting member 125. The first fixing body 121, the first fixing member 123,

The first fixing body 121 may be fixed to one longitudinal side of the body 110. And a first hinge 121a.

The first fixing member 123 may be connected to the first fixing body 121 at one end thereof. At this time, it is preferable to be rotatably connected through the first hinge 121a.

The first fixing member 123 may have a first ring 124 having an opening at the other end thereof. And a first fixing piece 124a elastically supported to open and close the opening portion of the first loop 124. [

The first support member 125 may be inserted and fixed at one end through the opening of the first ring 124. The other end of the first support member 125 may be engaged with the end hook of the main hook. For example, a wire or the like may be used for the first support member 125, and various types of steels may be used.

According to this structure, the first support member 125 can be easily fixed to one side of the longitudinal direction of the upper end of the body 110, and is easily separated and disassembled after the operation.

FIG. 6 is an enlarged view of a region B in FIG. 1, and a preferable exemplary form of the second connection portion 130 is specifically shown.

Referring to FIG. 6, the second connection part 130 connects the other longitudinal side of the body part 110 with the rear end of the main hook.

The second connection unit 130 includes a second fixing body 131, a second fixing member 133, and a second supporting member 135.

The second fixing body 131 may be fixed to the other longitudinal end of the body 110. And a second hinge 131a.

One end of the second fixing member 133 may be connected to the second fixing body 131. At this time, it is preferable to be rotatably connected through the second hinge 131a.

A second loop 134 having an open portion may be provided at the other end of the second fixing member 133. And a second fixing piece 134a elastically supported to open and close the opening portion of the second loop 134. [

The second support member 135 may be inserted and fixed at one end through the opening of the second ring 134. At the same time, the other end of the second support member 135 can be fastened to the rear end of the main hook, in particular, to the hook connection portion in a detachable manner.

According to this structure, the second supporting member 135 can be easily fixed to the other longitudinal direction of the body 110, and the body 110 and the first and second supporting members 125, 135 can be stably connected in a triangular shape as shown in FIG.

Meanwhile, the other end of the second support member 135 may be fastened to the rear end of the main hook, in particular, to the hook connection portion in a detachable manner. Referring to FIG.

FIG. 7 is an enlarged view of a region C in FIG. 1, showing a preferred exemplary shape of the hook connecting portion 140. FIG.

7, the first support member 125 of the first connection part is fastened to the front end of the main hook 101 and the second support member 135 of the second connection part is fastened to the main hook And can be detached and fixed through a hook connecting portion 140 provided at the rear end of the hook 101.

The hook connecting portion 140 may be fixed to the rear end of the main hook 101 using a plurality of fastening members 145 (for example, fixing bolts or the like) .

The connecting body 141 includes a locking hole 142 formed at an upper end of the second supporting member 135 to be inserted and fixed from the lower end to a predetermined height for the other end of the second supporting member 135 to be inserted and fixed.

In order to prevent the other end of the second support member 135 inserted inward through the locking hole 142 from slipping out of the locking hole 142, And a third fixing piece 143 for fixing the second fixing part.

For example, the third fixing piece 143 may be supported by a predetermined elastic force providing means. As a result, when the end of the length is pressed downward with respect to the shaft 143a, the engaging hole 142 can be opened by rotating in a predetermined range. On the other hand, when the pressing force is removed, the locking hole 142 can be closed by restoring to the original position. Thus, the second support member 135 inserted into the engagement hole 142 can be fixed.

Meanwhile, a coupling part 141b may be further provided between the connection body 141 and the rear end of the main hook 101. [

The fastening portion 141b is disposed between the connecting body 141 and the rear end of the main hook 101 and may be fixed to the rear end of the main hook by the plurality of fastening members 145. [

The connection body 141 may further include a reinforcing portion 141a formed on the opposite side of the coupling portion 141b with respect to the coupling hole 142. [

For example, the reinforcing portion 141a may have an inclined shape in which the cross-sectional area increases from the upper end to the lower end with respect to the height direction of the connection body 141. Accordingly, when a tensile load is generated from the second support member 135 connected to the lower end of the latching hole 142, the structurally weak portion can be reinforced.

FIG. 8 is a view illustrating various shapes of the body portion according to the embodiments of the present invention.

The body 110 shown in FIG. 8 (a) shows a state in which a beam-shaped member having the same thickness as the length of the body is used as described above.

In contrast, the body 110 shown in FIG. 8 (b) shows a state where the extension hook 111 is fixed and the counterweight 153 is installed on the opposite side. This is to compensate for the deflection of the body 110 in consideration of the weight of the hanging hook 111, so as to perform a more stable operation. A separate seat pin 151 is installed, A waiter 153 may be provided.

Meanwhile, the body 110 shown in FIG. 8 (c) uses a beam-shaped member whose thickness varies with respect to its length. In this case, the weight of the opposite side of the body 110 is increased in consideration of the position of the extension hook 111, and the shape and structure of the body 110 can be changed little by little.

As described above, according to the structure and the function of the present invention, it is possible to easily attach and detach to the hook in the crane, thereby extending the working range of the crane.

In addition, there is an advantage in that stability of work can be ensured by preventing free detachment in a state of being connected to a hook in a crane.

Further, there is an advantage that the position of the extension hook provided in the hook connecting device can be changed.

In addition, there is an advantage that the weight deflection due to a heavy object can be compensated by considering the weight balance of the body portion of the hook connecting device.

Although the present invention has been described with respect to a hook connecting device and a crane including the hook connecting device for extending the working range of the crane according to the present invention, it is apparent that various modifications are possible within the scope of the present invention.

It is to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the appended claims rather than the foregoing description, And all changes and modifications derived from the equivalents thereof should be interpreted as being included within the scope of the present invention.

1: Crane
3: Main cable
5: Connector
100: hook connection for extending the working range of the crane
101: Hook
110:
111: Extension hook
113: Guide rail
115: Moving block
120: first connection part
121: first fixing body
121a: first hinge
123: first fixing member
124: 1st ring
124a: first fixing piece
125: first supporting member
130: second connection portion
131: second fixing body
131a: second hinge
133: second fixing member
134: second ring
134a: second fixing piece
135: second supporting member
140: hook connection
141: Connecting body
141a:
141b:
142:
143: third fixing piece
145: fastening member
151:
153: Counterweight

Claims (10)

A hook connecting device connected to a main hook provided on a crane to extend a working range of the crane,
A body portion horizontally disposed at a lower portion of the main hook and having a downwardly extending extension hook;
A first connecting portion connecting one longitudinal side of the body portion and a front end of the main hook; And
And a second connection part connected to the body part and the first connection part in a triangular shape and connecting the other longitudinal side of the body part and the rear end of the main hook,
The second connection portion
And the other end portion is fixed to the lower portion of the hook connecting portion provided at the rear end of the main hook to be detachably fixed to the body portion, Characterized in that a plurality of reinforcing members are provided between the upper ends of the portions so that the cross-
Hook connection for extending the working range of the crane.
The method according to claim 1,
The body portion
A guide rail provided with guide grooves along the longitudinal direction of the body portion; And
And a moving block formed to be movable along the guide rail and coupled with the extension hook protruding downward through a lower end thereof,
Hook connection for extending the working range of the crane.
The method according to claim 1,
The first connecting portion includes:
A first fixing body fixed to one longitudinal side of the body portion and having a first hinge;
And a first ring connected to the first fixed body and rotatably connected through the first hinge and having an opening at an end of the first ring, A first fixing member including a first fixing member; And
And a first support member, one end of which is inserted and fixed through the opening portion of the first loop, and the other end of which is fastened to the end ring side of the main hook,
Hook connection for extending the working range of the crane.
delete delete delete delete delete The method according to claim 1,
And a counterweight for compensating deflection of the body portion in consideration of the weight of the weight hanging from the extension hook,
Wherein the counterweight is located opposite the position of the extension hook,
Hook connection for extending the working range of the crane.
A hook connection device for extending the working range of the crane of any one of claims 1 to 3,
crane.

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