KR20230047831A - Supporting apparatus for crane hook - Google Patents

Abstract

The present invention provides a hook support device for a crane that can prevent a hook from shaking during movement by stably attaching the hook to a crane boom. According to one aspect of the present invention, provided is a hook support device for a crane including: a hook block for attaching a hook to the end of a wire that is retractable and connected to a crane boom; a block support which is movably installed on the wire and has a hook block slidably coupled to the end; and an elastic member which is interposed between the hook block and the block support, and is compressed by the hook block sliding relative to the block support after the block support is supported on the crane boom according to the drawing of the wire, thereby supporting the hook block.

Description

Hook support device for crane {SUPPORTING APPARATUS FOR CRANE HOOK}

The present invention relates to a hook support device for a crane.

A crane is a mechanical device that lifts heavy objects at various industrial sites such as civil engineering, construction, and construction, and moves them up and down, left and right, and back and forth. By connecting wire ropes, slings, chains, etc., heavy weights can be lifted.

A crane is basically installed in a vehicle, and the crane vehicle runs, moves, and works while hanging a hook at the end of a boom. When the crane vehicle moves, the hook shakes back and forth, left and right, up and down, and the wire rope may break or be damaged by colliding with the crane structure. In addition, shaking of the hook may interfere with the driver's driving, and an accident may occur in which the hook hits a nearby obstacle such as a roadside tree, a traffic light, or a sign, or gives an impact to an adjacent vehicle while driving on a road.

Therefore, there is a need for a technology that fundamentally eliminates the shaking of the hook when moving the crane vehicle.

Republic of Korea Utility Model Registration No. 20-0420019 (registered on 2006.06.21)

The present invention provides a hook support device for a crane capable of preventing the hook from shaking during movement by stably attaching the hook to a crane boom.

According to one aspect of the present invention, a hook block for coupling a hook to an end of a wire retractably connected to a crane boom, a block support movably installed on the wire, and a hook block slidably coupled to the end of the hook block, and Interposed between the hook block and the block support, after the block support is supported on the crane boom according to the inlet of the wire, the hook block is compressed by sliding movement with respect to the block support Crane hook including an elastic member supporting the hook block A support device is provided.

When the hook block slides, it may further include an anti-rotation unit for preventing rotation of the wire of the hook block as an axis.

The anti-rotation unit may include a guide protrusion formed on the guide rail hook block formed on the block support to correspond to a position of the guide rail and sliding on the guide rail.

The guide rail may extend in the longitudinal direction to guide the longitudinal movement of the guide protrusion.

A block stopper may be formed on the hook block to limit sliding movement with respect to the block support.

The hook block may include a hook connection portion to which a hook is coupled and a wire connection portion to which a wire is coupled and detachably coupled to the hook connection portion.

A hook coupling hole for hook coupling may be formed in the hook connection portion.

A hook coupling member for detachably coupling the hook to the hook connection unit may be further included.

A wire coupling portion for coupling wires may be formed in the wire connection portion.

A magnetic material provided on the block support may be further included so that the supporting force of the block support for the crane boom is improved.

According to the present invention, it is possible to prevent the hook from shaking during movement by stably bringing the hook into close contact with the crane boom.

1 is a view showing an operating process of a hook support device for a crane according to an embodiment of the present invention.
Figure 2 is a front view showing a hook support device for a crane according to an embodiment of the present invention.
Figure 3 is a cross-sectional view showing a hook support device for a crane according to an embodiment of the present invention.

Since the present invention can apply various transformations and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, it should be understood that this is not intended to limit the present invention to specific embodiments, and includes all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted.

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

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Hereinafter, an embodiment of the hook support device 100 for a crane according to the present invention will be described in detail with reference to the accompanying drawings, and in the description with reference to the accompanying drawings, the same or corresponding components are assigned the same reference numerals. And redundant descriptions thereof will be omitted.

In addition, terms such as first and second used below are only identification symbols for distinguishing the same or corresponding components, and the same or corresponding components are not limited by terms such as first and second. no.

According to this embodiment, as shown in FIGS. 1 to 3, the hook block 110, the block stopper 111, the first support 112, the block support 120, the second support 121, the elastic member 130, anti-rotation part 140, guide rail 141, guide protrusion 142, hook connection part 150, hook coupling hole 151, hook coupling member 152, wire connection portion 160, Crane hook support device 100 including a wire coupling portion 161, a wire coupling hole 162, a wire coupling member 163, a wire coupling mechanism 164, a wire coupling pin 165, and a magnetic body 170 is presented

According to the present invention, as shown in FIG. 1, the hook block 110 can couple the hook 30 to the end of the wire 20 connected to the crane boom 10 to be drawn in and out, and the block The support 120 is slidably coupled to the hook block 110 and may be movably installed on the wire 20 . The elastic member 130 is interposed between the hook block 110 and the block support 120, and after the block support 120 is supported on the crane boom 10 according to the inlet of the wire 20, the hook block 110 ) may be compressed by sliding movement with respect to the block support 120 to support the hook block 110.

That is, as shown in FIG. 1 (b), as the wire 20 is introduced into the crane boom 10, the hook block 110, the block support 120 and the elastic member 130 are coupled to the wire When moving in the direction of the crane boom 10 along 20, the block support 120 can be supported by the crane boom 10. After that, as shown in FIG. 1 (c), when the wire 20 is pulled in further, the block support 120 is supported by the crane boom 10 and does not move, and the hook block 110 is the elastic member 130 ) and can slide in the lead-in direction of the wire 20.

In this way, as the block support 120 is supported and the hook block 110 compresses the elastic member 130 and slides, the crane boom 10, such as moving the crane vehicle and changing the direction of the crane boom 10, In a moving situation, the block support 120 on the crane boom 10 is elastically supported by the elastic member 130, so shaking can be reduced and/or eliminated. Accordingly, shaking of the hook block 110 coupled to the block support 120 is also reduced and/or eliminated, and as a result, shaking of the hook 30 can be reduced and/or eliminated.

More specifically, as the hook block 110 slides and the elastic member 130 is compressed, restoring force of the elastic member 130 is generated. The restoring force acts in the opposite direction in which the wire 20 is drawn into the hook block 110, and the wire 20 is drawn in by the crane boom 10 and the restoring force acting on the hook block 110 causes the wire ( 20) may occur. The tension generated by this improves the supporting force of the block support 120 for the crane boom 10, and as a result, shaking of the hook 30 can be effectively reduced and/or eliminated.

Hereinafter, each configuration of the hook support device 100 for a crane according to the present embodiment will be described in more detail with reference to FIGS. 1 to 3 .

As shown in FIGS. 1 to 3 , the hook block 110 may couple a hook 30 to an end of a wire 20 connected to the crane boom 10 to be drawn in and out. That is, the hook 30 may be connected to the lower end of the hook block 110 and the wire 20 may be connected to the upper end.

As shown in FIG. 3, the hook block 110 includes a hook connection portion 150 to which the hook 30 is coupled and a wire connection portion 160 to which the wire 20 is coupled and detachably coupled with the hook connection portion 150. may consist of

As shown in FIG. 3 , the hook connection part 150 may have a hook coupling hole 151 for coupling the hook 30 . The hook coupling hole 151 may have a lower end narrower than an upper end to support the hook coupling member 152, and the hook 30 may be detachably coupled to the hook coupling hole 151 by the hook coupling member 152. can Therefore, the hook 30 can be easily replaced in situations such as when the hook 30 is defective.

As shown in FIG. 3 , the hook coupling hole 151 may be formed such that a lower end of the hook 30 may enter. Preferably, the outer diameter of the hook 30 entering the hook coupling hole 151 corresponds to the inner diameter of the lower end of the hook coupling hole 151, thereby minimizing shaking of the hook 30.

As shown in FIG. 3, the hook coupling member 152 may be a kind of nut that can be screwed into the hook 30. It may also include a bearing that enables rotation of the hook 30 .

As shown in FIG. 3 , the wire connection unit 160 may be formed with a wire coupling unit 161 . The wire coupling portion 161 may protrude from the wire connection portion 160 . In addition, a wire coupling hole 162 to which the wire 20 is coupled may be formed in the wire coupling portion 161 . The wire 20 may be directly coupled to the wire coupling hole 162 , or the wire 20 may be coupled using the wire coupling member 163 so that the coupling force of the wire 20 is improved.

As shown in FIG. 3, the wire coupling member 163 has a wire coupling mechanism 164 coupled to the end of the wire 20 and a wire coupling pin coupling the wire coupling mechanism 164 to the wire coupling hole 162. (165). A coupling force between the wire 20 and the hook block 110 may be increased by using the wire coupling member 163 . In addition, a plurality of wire coupling parts 161 may be arranged so that the bonding force between the wire 20 and the hook block 110 is further improved.

As shown in FIGS. 1 to 3 , the block support 120 is movable along the wire 20 , and the hook block 110 is slidably movable at an end thereof. It has a hollow structure so that the hook block 110 can be inserted, so that the hook block 110 can slide into the block support 120. Also, the outer diameter of the hook block 110 may correspond to the inner diameter of the block support 120 .

As described above, when the outer diameter of the hook block 110 corresponds to the inner diameter of the block support 120 and the hook block 110 slides, the range in which the hook block 110 can move inside the block support 120 increases. By reducing the shaking of the hook block 110 can be effectively reduced. In addition, since the hook block 110 and the block support 120 have the same structure, shaking of the hook block 110 can be further reduced. For example, when the hook block 110 has a cylindrical structure, the block support 120 may also have a cylindrical structure.

As shown in FIGS. 1 to 3, the elastic member 130 is interposed between the hook block 110 and the block support 120, and the block support ( After the hook block 120 is supported, the hook block 110 is compressed by sliding with respect to the block support 120 to support the hook block 110 . The elastic member 130 may be a coil spring.

Specifically, when the elastic member 130 is interposed between the hook block 110 and the block support 120 and the hook block 110 applies a compressive force to the elastic member 130, the elastic member 130 is in its original shape. A restoring force to return to, that is, an elastic force occurs. The elastic force may act on the hook block 110 to push the hook block 110 in the opposite direction to which the wire 20 is inserted. As a result, tension is applied to the wire 20 due to the force of pulling the wire 20 and the elastic force acting on the hook block 110, so that the wire 20 can be taut. When the wire 20 is kept taut, shaking of the hook block 110 can be reduced.

As shown in FIGS. 2 and 3 (b), the anti-rotation part 140 corresponds to the guide rail 141 formed on the block support 120 and the position of the guide rail 141, so that the guide rail 141 It may be made of a guide protrusion 142 formed on the hook block 110 so as to be slidably movable.

As shown in FIGS. 2 and 3(b), the guide rail 141 extends in the longitudinal direction to the block support 120 to limit the movement range of the guide protrusion 142, and the longitudinal direction of the guide protrusion 142. Can guide directional movement.

In this way, as the guide rail 141 restricts the movement of the guide protrusion 142, the hook block 110 having the wire 20 as an axis during the sliding movement of the hook block 110 having the guide protrusion 142 formed thereon. It is possible to reduce shaking of the hook block 110 by preventing rotation.

As shown in FIG. 3(b), the guide protrusion 142 may be formed of a guide pin that is detachably coupled to the hook block 110. That is, a groove into which a guide pin can be coupled may be formed in the hook block 110, and the guide pin and the hook block 110 may be coupled by screw coupling.

As described above, as the guide pin is formed to be detachable, the guide pin can be replaced when the guide protrusion 142 is worn, and the guide pin can be replaced when disassembly between the block support 120 and the hook block 110 is required. It can be pulled out and disassembled.

As shown in FIGS. 2 and 3( b ), the anti-rotation unit 140 may be provided in plural numbers, and the plurality of anti-rotation units 140 may be provided symmetrically. As the anti-rotation part 140 is provided in plurality, the force for preventing the rotation of the hook block 110 about the wire 20 as an axis is distributed to the plurality of guide protrusions 142, effectively preventing the hook block 110 from rotating. Rotation can be prevented.

As shown in FIGS. 2 and 3 , the block stopper 111 is formed at the lower end of the hook block 110 to limit the sliding range of the block support 120 . That is, the block stopper 111 has a larger outer diameter than the hook block 110, so that the hook block 110 is supported by the block support 120 during sliding movement and can limit the sliding movement range of the hook block 110. Accordingly, it is possible to prevent all of the hook blocks 110 from entering the inside of the block support 120, thereby preventing the block support 120 from being damaged by the hook 30.

As shown in FIGS. 2 and 3 (b), the sliding movement range of the hook block 110 limited by the block stopper 111 is equal to or greater than the sliding movement range of the guide pin limited by the guide rail 141 can be short During the sliding movement of the hook block 110, the block stopper 111, which has a relatively large cross-section, is supported on the block support 120 before the guide pin, so that the hook block 110's support for the block support 120 can be increased. , it is also possible to prevent breakage of guide pins with a narrow cross-section.

As shown in FIG. 3, the first support part 112 is formed on the hook block 110 to support the elastic member 130 and to stably support the elastic member 130 of the hook block 110. It may be formed as a groove along the edge. For example, when the elastic member 130 is a coiled spring, one end of the spring is positioned along the groove so that a compressive force can be transmitted more efficiently when the hook block 110 slides.

As shown in FIG. 3 , the second support part 121 may be formed on the block support 120 to support the other end of the elastic member 130 . The second support part 121 protrudes from the inner surface of the block support 120 to support the elastic member 130 and induce stable compression of the elastic member 130 .

In addition, it extends along the circumference of the inner surface of the block support 120 to more stably support the elastic member 130 . For example, when the elastic member 130 is a coiled spring, the other end of the spring may be supported around the second support part 121 and stably supported.

As shown in FIG. 3 , the magnetic body 170 is provided on the block support 120 to improve the supporting force of the crane boom 10 . After the block support 120 is supported on the crane boom 10 by introducing the wire 20, the magnetic body 170 acts as a force on the crane boom 10 to improve the bearing capacity of the block support 120 . In addition, when the magnetic body 170 releases the wire 20, the block support 120 can be detached from the crane boom 10.

Although one embodiment of the present invention has been described above, those skilled in the art can add, change, delete, or add components within the scope not departing from the spirit of the present invention described in the claims. The present invention can be variously modified and changed by the like, and this will also be said to be included within the scope of the present invention.

10: crane boom
20: wire
30: hook
100: hook support device for crane
110: hook block
111: block stopper
112: first support
120: block support
121: second support
130: elastic member
140: anti-rotation unit
141: guide rail
142: guide projection
150: hook connection
151: hook coupling hole
152: hook coupling member
160: wire connection
161: wire joint
162: wire coupling hole
163: wire coupling member
164: wire coupling mechanism
165: wire coupling pin
170: magnetic body

Claims (10)

A hook block for coupling a hook to an end of a wire retractably connected to a crane boom;
a block support movably installed on the wire and to which the hook block is slidably coupled to an end portion; and
Interposed between the hook block and the block support, after the block support is supported on the crane boom according to the inlet of the wire, the hook block is compressed by sliding movement with respect to the block support to support the hook block A hook support device for a crane comprising an elastic member.
According to claim 1,
A hook support device for a crane further comprising a rotation preventing part preventing rotation of the hook block about the wire during the sliding movement of the hook block.
According to claim 2,
The anti-rotation part,
Guide rails formed on the block support; and
A hook support device for a crane, comprising a guide protrusion formed on the hook block to correspond to a position of the guide rail and sliding on the guide rail.
According to claim 3,
The guide rail is extended in the longitudinal direction to guide the longitudinal movement of the guide projection, hook support device for a crane.
According to claim 1,
A hook support device for a crane, wherein a block stopper for limiting sliding movement with respect to the block support is formed on the hook block.
According to claim 1,
The hook block,
a hook connection portion to which the hook is coupled; and
A hook support device for a crane, comprising a wire connection portion to which the wire is coupled and detachably coupled to the hook connection portion.
According to claim 6,
A hook support device for a crane, wherein a hook coupling hole for coupling the hook is formed in the hook connection portion.
According to claim 7,
Hook support device for a crane further comprising a hook coupling member for detachably coupling the hook to the hook connection part.
According to claim 6,
A hook support device for a crane in which a wire coupling portion for coupling the wire is formed in the wire connection portion.
According to claim 1,
Crane hook support device further comprising a magnetic body provided on the block support so that the supporting force of the block support for the crane boom is improved.

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