KR102370783B1 - Crane for vehicle mounting - Google Patents

Abstract

Disclosed is a crane for mounting on a vehicle, which allows the angle of a pivoting bracket to be changed in a vertical direction with respect to a rotating bracket by an angle change guide part to adjust the height of a boom according to the volume or weight of an object to be transported and guide lifting of the object to be transported, thereby increasing stability. The disclosed crane for mounting on a vehicle comprises: a mast fixed and installed in the loading box of a vehicle; a rotating bracket rotatably installed in a horizontal direction on an upper side of the mast; a pivoting bracket hinged and connected to the rotating bracket to be rotatable in a vertical direction; an angle change guide unit for guiding the pivoting bracket so that the same is supported on the rotating bracket and the angle can be changed by the operation thereof using an external force; a winch installed to be fixable to the pivoting bracket, and having a wire connected to the object to be transported and provided to be wound or unwound; and a boom installed on the pivoting bracket to support the wire so that the object to be transported is lifted and pulled according to the moving direction of the wire when the wire is connected to the object to be transported.

Description

CRANE FOR VEHICLE MOUNTING

The following embodiments relate to the technology of a vehicle-mounted crane.

In general, a work high-altitude vehicle and a cargo crane, etc. are used for loading and unloading cargo by withdrawing a boom, or for installation and maintenance of facilities. At this time, the working height difference can be easily overturned by the drawn out boom, and a device called an outrigger is installed to compensate for this.

However, when the high working vehicle and cargo crane have a wide working radius or working at high altitude, there is always a risk of overturning. It must be located within the compartment where the grounding points of the outriggers are connected. At this time, there is also a risk that the center of gravity is changed by the wind load generated by the subsidence of the ground supported by the outrigger or wind, which is an environmental factor.

A load limit device that limits the boom angle according to the weight of some cargo is installed, but this only reflects the geometry of the work vehicle and does not involve the center of gravity fluctuated by external environmental factors. can not do it.

In addition, the crane is a mechanical device for lifting a heavy object and transporting it up and down, and there are various types depending on the driving method. crane). However, in the case of such a jib crane, when the weight is heavy, there is a problem in that the boom is deformed or damaged by the bending load.

Therefore, there is a need to improve it.

Republic of Korea Patent Publication No. 10-1946142 (2019.01.30)

In the embodiments, the angle of the rotation bracket is changed in the vertical direction to the rotation bracket by the angle change guide unit, so that the height of the boom can be adjusted according to the volume or weight of the transport object connected to the winch. An object of the present invention is to provide a vehicle-mounted crane that improves the

In addition, the embodiment has an object to provide a vehicle-mounted crane that can effectively prevent a safety accident due to winding or unwinding of the wire by being covered so that the wire is prevented from being exposed in the boom by the exposure prevention cover.

In order to achieve the above object, a vehicle-mounted crane according to an embodiment of the present invention includes a mast fixedly installed in a loading box of a vehicle, a rotation bracket rotatably installed in a horizontal direction on an upper side of the mast, and the rotation bracket a rotation bracket hinged so as to be rotatably rotatable in the vertical direction, an angle change guide part for guiding the rotation bracket to be supported so that the rotation bracket can be angularly changed by manipulation by an external force, and is fixedly installed to the rotation bracket, A winch in which a wire connected to a transport object can be wound or unwound, and the wire is installed on the rotation bracket so that the transport object is lifted and pulled according to the moving direction of the wire when the wire is connected to the transport object, and the wire can be dropped It is characterized in that it includes a boom to support.

The angle change guide portion is rotatably connected to the rotation bracket, and includes a rotation member having a locking shaft portion protruded from the circumferential surface, and a plurality of locking grooves formed on the circumferential surface so that the locking shaft is supported by the locking shaft portion.

The boom unit includes a main boom unit that is fixedly installed on the rotation bracket, a slide boom unit that is slidably inserted into the main boom unit, and is rotatably provided at the end of the slide boom unit to move the wire in the longitudinal direction. A guide roller and a position fixing operation part for fixing the position of the slide boom to be adjustable to the main boom by operation by external force when the slide boom is moved, and the wire may be covered to prevent exposure from the boom by an exposure prevention cover.

In the vehicle-mounted crane according to the present invention, the angle of the rotation bracket is changed in the vertical direction to the rotation bracket by the angle change guide part, so that the height of the boom is adjusted according to the volume or weight of the object to be transported connected to the winch. This has the effect of improving stability by guiding

In addition, the present invention has the effect of being able to prevent a safety accident that may occur in the process of winding or unwinding the wire during operation of the winch in advance by being covered so that the wire is prevented from being exposed on the boom stand by the exposure prevention cover.

In addition, the present invention has the effect of preventing the mast from being deformed or overturned by the bending load by dispersing the load of the mast when the wire is towed by the operation of the winch to raise the object to be transported.

1 is a perspective view showing a vehicle-mounted crane according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of the main part showing a state in which the exposure prevention cover is installed on the boom of the vehicle-mounted crane according to an embodiment of the present invention.
3 is a cross-sectional view illustrating a state in which an exposure prevention cover is installed on the boom of a vehicle-mounted crane according to an embodiment of the present invention.
Figure 4 is an exploded perspective view showing the main part of the load distribution in the vehicle-mounted crane according to an embodiment of the present invention.
5 is a cross-sectional view illustrating a load distribution unit in a vehicle-mounted crane according to an embodiment of the present invention.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

Specific structural or functional descriptions of the embodiments are disclosed for purposes of illustration only, and may be changed and implemented in various forms. Accordingly, the embodiments are not limited to the specific disclosure form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Although terms such as first or second may be used to describe various elements, these terms should be interpreted only for the purpose of distinguishing one element from another. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

When a component is referred to as being “connected to” another component, it may be directly connected or connected to the other component, but it should be understood that another component may exist in between.

The terms used in the examples are used for the purpose of description only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, 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 the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In describing the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

In the embodiments of the present invention, unless otherwise defined, 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 the present invention belongs. have meaning Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in an embodiment of the present invention, an ideal or excessively formal meaning is not interpreted as

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative and the present invention is not limited to the illustrated matters. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, cases including the plural are included unless otherwise explicitly stated.

In interpreting the components, it is interpreted as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between two parts unless 'directly' is used.

Reference to an element or layer “on” another element or layer includes any intervening layer or other element directly on or in the middle of another element. Like reference numerals refer to like elements throughout.

The size and thickness of each component shown in the drawings are illustrated for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated component.

Each feature of the various embodiments of the present invention may be partially or wholly combined or combined with each other, and as those skilled in the art will fully understand, technically various interlocking and driving are possible, and each embodiment may be implemented independently of each other, It may be possible to implement together in a related relationship.

1 is a perspective view illustrating a vehicle-mounted crane according to an embodiment of the present invention, and FIG. 2 is an exploded view showing a state in which an exposure prevention cover is installed on the boom of the vehicle-mounted crane according to an embodiment of the present invention. 3 is a cross-sectional view illustrating a state in which an exposure prevention cover is installed on a boom of a vehicle-mounted crane according to an embodiment of the present invention, and FIG. 4 is a load in a vehicle-mounted crane according to an embodiment of the present invention. It is an exploded perspective view showing the main part of the dispersing unit, and FIG. 5 is a cross-sectional view showing the load distributing unit in the vehicle-mounted crane according to an embodiment of the present invention.

1 to 5, the vehicle-mounted crane according to an embodiment of the present invention includes a mast 100, a rotation bracket 200, a rotation bracket 300, an angle change guide unit 400, and a winch 500, as shown in FIGS. ) and a boom stand (600).

The mast 100 is fixedly installed in the loading box of the vehicle to provide a space in which the rotating bracket 200 can be installed. The mast 100 is formed of a circular or polygonal column having a constant height.

The rotation bracket 200 is installed to be rotatable 360 degrees in the horizontal direction on the upper side of the mast 100 . At this time, the rotation bracket 200 may be prevented from being arbitrarily rotated in the mast 10 by the rotation preventing operation unit 210 .

This anti-rotation operation unit 210 is extended to the rotation bracket 200 to be disposed on the circumferential surface of the mast 100, and the fixing member 211 through which the fastening hole 212 is formed and the fastening hole 212 are rotated. It is fastened to be possible and includes a rotation operation lever 213 having a pressing member 214 for pressing the circumferential surface of the mast 100 at the end.

And, the rotation bracket 300 is hinge-connected to the rotation bracket 200 so as to be rotatable in the vertical direction. This rotation bracket 300 not only provides a space in which the winch 500 and the boom stand 600 are installed, but also changes the angle by the angle change guide unit 400 to adjust the height of the boom stand 600. . At this time, the rotation bracket 300 is provided with a base plate 310 that allows the winch 500 to be stably fixed thereinto.

On the other hand, the angle change guide unit 400 guides the rotation bracket 300 to be supported by the rotation bracket 200 so that the angle can be changed by manipulation by an external force. This angle change guide part 400 is rotatably connected to the rotation bracket 300, and the rotation member 410 and the lock shaft part 411 in which the lock shaft part 411 protrudes from the circumferential surface is supported by the rotation bracket ( It includes a plurality of engaging grooves 420 formed on the circumferential surface of the 200).

That is, the rotation bracket 300 can be positioned at a desired angle in the rotation bracket 300 by inserting the locking shaft portion 411 provided on the rotation member 410 to be caught in any one selected from the plurality of locking groove portions 420 . there will be

The winch 500 is fixedly installed on the base plate 310 of the rotation bracket 300 , and the wire 510 connected to the object to be transported is provided so as to be wound or unwound. At this time, a hook 520 is provided at the end of the wire 510 to hang and tow the object to be transported.

In addition, the boom 600 is installed in the rotation bracket 300 so that the wire 510 is lifted and pulled according to the moving direction of the wire 510 when the wire 510 is connected to the object to be transported, and the wire 510 is supported so that it can be dropped. .

At this time, the boom stand 600 is a main boom stand 610 fixedly installed on the rotation bracket 300 , a slide boom stand 620 , which is slidably inserted into the main boom stand 610 , and a slide boom stand 620 at the end of the A guide roller 630 and a slide boom stand 620 that are provided rotatably to movably drop the wire 510 in the longitudinal direction are operated by an external force during the slide movement to position the slide boom stand 620 on the main boom stand 610. It includes a position fixing operation unit 640 for fixing.

Here, the position fixing operation unit 640 is the main boom stand 610 so as to communicate with any one of the fixing hole 641 having a plurality of penetratingly formed along the longitudinal direction on the circumferential surface of the slide boom stand 620, and the fixing hole 641. A locking operation lever 643 provided in the protruding tube portion 642 and the projecting tube portion 642 protruding from the circumferential surface of the ) is included.

On the other hand, the wire 510 may be covered to prevent exposure in the boom 600 by the exposure prevention cover 700 in the boom (600).

This exposure prevention cover 700 is coupled to the main boom stand 610, the first accommodating cover 710 for accommodating the wire 510, and the slide boom stand 620 to accommodate the first accommodating cover 710. When the second accommodating cover 720 and the slide boom stand 620 slides, the second accommodating cover 720 is interlocked to slide the first accommodating cover 710 in the longitudinal direction. include

At this time, the interlocking slide guide part 730 is provided on the upper side of the first accommodating cover 710 so as to be slidably coupled to the rail member 731 and the slide groove part 732 forming the slide groove part 732 . It includes a slide member 733 provided on the inner surface of the accommodation cover (720).

That is, when the slide boom stand 620 is slide-moved to be inserted into or protruded from the main boom stand 610, the second accommodating cover 720 is controlled by the distance the slide boom stand 620 is slide-moved through the interlocking slide guide 730. 1 while accommodating the accommodating cover 710, it slides together.

Accordingly, since the wire 510 is moved in the longitudinal direction by the operation of the winch 500, the portion disposed on the upper side of the main boom stand 610 and the slide boom stand 620 can be maintained in an exposed state, It is possible to prevent a safety accident in which the operator's hand is caught between the boom 600 and the wire 510 by the operator's mistake.

In addition, the mast 100 may distribute the load by the load distribution unit 800 when the wire 510 is towed to lift the object to be transported. The load distribution unit 800 includes a housing 810 , a protruding member 820 , and an elastic protrusion manipulation unit 830 .

Specifically, the housing 810 is provided on the lower side of the mast 100 and is rotatably installed 360 degrees in the loading box of the vehicle. The housing 810 is formed in a hollow tube shape to provide a space in which the protruding member 820 and the elastic protruding manipulation unit 300 are operably installed. At this time, the lower side of the housing 810 is provided with a rotation support plate 811 that is fixedly mounted to the loading box of the vehicle and rotatably supports the housing 811 .

The protruding member 820 is accommodated in the housing 810 to be slidably retractable in the axial direction. The protruding member 820 is disposed while being inserted into the housing 810 and elastically protrudes from the housing 100 when the elastic protrusion manipulation unit 830 is manipulated to reinforce the load of the mast 100 , thereby protruding from the vehicle. It plays a role of being supported on the bottom of the loading box. At this time, a closing cap 821 is fitted to the front end of the protruding member 820 , and a support foot 82a supported in contact with the floor of the loading box of the vehicle is provided below the closing gap 821 .

In addition, the elastic protrusion operation guide 830 guides the protruding member 820 to elastically protrude from the housing 810 by manipulation by an external force so as to distribute the load transmitted to the mast 100 .

To this end, the elastic protrusion operation guide 830 is provided on the protruding member 820 to provide a driving force through which the protruding member 820 protrudes and an operation control unit for operably operating the driving unit 831 ( 832).

At this time, the driving unit 831 is provided so as to be elastically wound around the mounting member 831a and the mounting member 831a coupled to the rear end of the protruding member 820, and the end of the spring spring is caught and supported by the housing 810 ( 831b).

That is, when the protruding member 820 is shaft-inserted into the housing 810 , the spring spring 831b is released while being caught by the housing 810 , thereby applying an elastic restoring force. Accordingly, since the force to be wound to the initial state from the released state of the spring spring 831b is applied, the force to withdraw the protruding member 820 from the initial state in which it is maximally inserted into the housing 810 acts.

In addition, the operation manipulation unit 832 is extended to the rear end of the protruding member 820, and the protruding member 820 is inserted into the extended member 832a through which the engaging hole 832b is formed, and the housing 810 is maximally inserted. A fastening pipe portion 832c protruding from the inner surface of the housing 810 to be disposed in communication with the locking hole portion 832b at the time of operation, and a locking hole portion ( 832b) includes a locking bolt (832d) for locking or unlocking.

That is, when the locking bolt 832d inserted into the housing 810 passes through the locking hole portion 832b of the protruding member 820 and is fastened to the fastening pipe portion 832c, the locking bolt 832d is the protruding member 820 is the mainspring. The movement of the protruding and retracting member 820 is restricted so as to be prevented from protruding from the housing 810 by the elastic force of the spring 831b. Conversely, when the locking bolt 832d inserted into the housing 810 is released from the fastening tube portion 832c and separated from the locking hole portion 832b, the locking bolt 832d is the protruding member 820 of the spring 831b. Allows the movement of the protruding member 820 to protrude from the housing 810 by the elastic force.

Accordingly, the protruding member 820 may not only protrude from the housing 810 according to the operator's selection, but also protrude from the housing 810 and lift the object to be transported on the mast 100 when it is supported on the bottom surface of the loading box of the vehicle. It is possible to distribute the load transmitted to the

Although embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made within the scope without departing from the technical spirit of the present invention. . Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

100: mast 200: rotation bracket
210: rotation preventing operation unit 211: fixing member
212: fastening hole 213: rotation control lever
300: rotation bracket 400: angle change guide part
410: rotating member 411: engaging shaft portion
420: locking groove 500: winch
510: wire 520: hook
600: boom 610: main boom
620: slide boom 630: guide roller
640: position fixing operation part 641: fixing hole part
642: protruding pipe part 643: locking operation lever
700: exposure prevention cover 710: first receiving cover
720: second accommodating cover 730: interlocking slide guide part
731: rail member 732: slide groove portion
732: slide member 800: load distribution unit
810: housing 811: rotation support plate
820: protruding member 821: closing cap
830: elastic protrusion manipulation unit 831: driving unit
832: operation control unit

Claims (3)

Mast fixedly installed in the loading box of the vehicle;
a rotation bracket rotatably installed in the horizontal direction on the upper side of the mast;
a rotation bracket hingedly connected to the rotation bracket so as to be rotatably rotatable in the vertical direction;
an angle change guide part for guiding the rotation bracket to be supported so that the angle can be changed by the rotation bracket by manipulation by an external force;
a winch which is fixedly installed on the rotation bracket and is provided with a wire connected to a transport object to be wound or unwound; and
and a boom that is installed on the rotation bracket to support the wire in a fallable manner so that the carrying object is lifted and pulled according to the moving direction of the wire when the wire is connected to the carrying object.
The boom unit includes a main boom unit that is fixedly installed on the rotation bracket, a slide boom unit that is slidably inserted into the main boom unit, and is rotatably provided at the end of the slide boom unit to move the wire in the longitudinal direction. A guide roller and a position fixing operation part for fixing the position of the slide boom to the main boom stand by manipulation by an external force when the slide is moved,
The wire is covered to prevent exposure in the boom by an exposure prevention cover,
The exposure prevention cover includes a first accommodating cover coupled to the main boom to accommodate the wire, a second accommodating cover coupled to the slide boom to accommodate the first accommodating cover, and the second accommodating cover when the slide boom is slid. It includes an interlocking slide guide for guiding the accommodation cover to slide in the longitudinal direction of the first accommodation cover by interlocking,
The interlocking slide guide includes a rail member provided on the upper side of the first accommodating cover to form a slide groove and a slide member provided on the inner surface of the second accommodating cover to be slidably coupled to the slide groove. Features a vehicle-mounted crane.
The method of claim 1,
The angle change guide portion is rotatably connected to the rotation bracket, the rotation member having a locking shaft portion protruding from the circumferential surface, and a plurality of locking grooves formed on the circumferential surface so that the locking shaft portion is caught and supported. vehicle-mounted crane.
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