KR20090132825A - Rotatable crane hook block - Google Patents

Abstract

PURPOSE: A rotatable crane hook apparatus is provided to rotate materials by activating a rotating guard using a motor of a power supply part fixed to a crane. CONSTITUTION: A rotatable crane hook apparatus comprises a hook block(20), a power supply part(40), and a rotating guard(60). Materials hang on the hook block. The power supply part comprises a motor providing rotation power. The rotating guard revolves by the power supply part to rotate the hook block and the materials.

Description

Rotatable crane hook block

The present invention relates to a rotatable crane hook device. More specifically, by rotating the rotating guard by using a motor of the power supply unit fixed to the crane to rotate the material, reducing the effort and time cost of the material rotation, and prevents workers' safety accident, There is no need to operate the power cable, and the fixing member is provided at the bottom of the rotating guard so that the material does not shake when the rotating guard is rotated, and the cushioning member is provided at the bottom of the rotating guard to alleviate the impact when the material collides with the rotating guard. In addition to enabling the present invention, the present invention relates to a rotatable crane hook device capable of precisely adjusting the rotational start and stop of the motor and the rotational speed by wireless control using a remote controller or the like.

Cranes include tower cranes that are mainly used in apartment construction sites, jib cranes with inclined beams (jibs), and bridge cranes in which beams are mounted on both supports. Among them, the tower crane is configured to move the trolley suspended from the load on the top of the high tower, developed for port unloading or high-rise construction, and installed in shipyard fleets and quay walls, and is often used in skyscrapers or apartment construction sites .

In general, the horizontal axis of the tower crane is provided with a trolley, the trolley and the hook block is connected by a rope. When lifting a material using a crane at a construction site, a hook rope is generally mounted on a hook block.

In actual work at the construction site, in addition to moving the hook block in the vertical direction, it often occurs that the hook block on which the material is mounted must be rotated. This is because after the material is moved to the desired place, the material must be dropped in the desired direction.

In order to rotate the material in the desired direction, a conventional method has been used by hanging a string at both ends of the material and pulling it by workers. However, when using this method, there is a problem that the safety of workers is not guaranteed and manpower is required. According to the Korea Occupational Safety and Health Agency, about 60% of crane accidents related to falling and falling accidents account for about 60% of construction accidents. This seems to reflect some of the results of adhering to the traditional working method as described above.

In order to solve this problem, a method of rotating the hook block itself using a motor has been proposed, and such a product has been released overseas. However, to utilize this method, a separate power cable must be installed to drive the motor. Thus, this method is used in places such as factories where long power cables are not needed in limited space.

Tower cranes used in construction sites, etc., because the lifting distance is very long, it is impossible to connect the power cable to the hook block, there is a problem that the output is not enough and often need to be replaced if the battery is used as a power source.

The present invention has been made to solve the above problems, in particular to reduce the effort and time cost of the rotation of the material, to prevent the safety accident of workers, do not need to operate a long power cable, the rotation of the guard The material not only shakes when rotating, the shock can be alleviated when the material collides with the rotating guard, and the rotation can be precisely controlled by the remote control, such as starting and stopping the motor and rotating speed by wireless control. The object is to provide a possible crane hook device.

Rotatable crane hook device according to an aspect of the present invention devised to achieve the above object is a hook block for hanging the material; A power providing unit having a motor for providing rotational power; And a rotation guard for rotating the hook block and the material by rotating by the power supply.

In addition, the power providing unit may include a reducer for adjusting the rotation of the motor.

In addition, a bevel gear for transmitting power may be provided between the power supply unit and the rotation guard.

In addition, the rotation guard may be formed in a columnar shape of the lower end is opened.

In addition, a lower end of the rotating guard may be provided with a fixing member for fixing the material.

In addition, the fixing member may be provided with a buffer member for mitigating the impact with the material.

In addition, the rotation guard is provided below the power supply unit, the lower end of the power supply and the upper end of the rotation guard may be provided with a connection for connecting to each other.

In addition, a ball bearing may be provided between the connection part of the power supply unit and the connection part of the rotation guard.

Rotatable crane hook device according to another aspect of the present invention comprises a hook block connected to the trolley of the crane hook device by a rope; A pair of power providing units including a motor for rotating the hook block and a speed reducer for decelerating the motor; And a rotation guard provided below the power supply unit and surrounding the rope.

In addition, the rotation guard may be formed in a polygonal column shape including a cylindrical shape or a square column with an open bottom.

In addition, a lower end of the rotating guard may be provided with a fixing member for fixing the material.

In addition, the fixing member may be provided with a buffer member for mitigating the impact with the material.

In addition, the rotation guard is provided below the power providing unit, the lower end of the power control and the upper end of the rotation guard may be provided with a connection for connecting to each other.

In addition, a ball bearing may be provided between the connection part of the power supply unit and the connection part of the rotation guard.

According to the present invention, by rotating the rotation guard by using a motor of the power supply unit fixed to the crane to rotate the material, reducing the effort and time costs required for the rotation of the material and prevent the safety accidents of workers There is.

In addition, according to the present invention, since there is no need to connect a power line to the hook block as in the conventional motor method, there is an effect that there is no need to operate a long power cable.

In addition, according to the present invention is provided with a fixing member at the lower end of the rotating guard to prevent the material from shaking during the rotation of the rotating guard, and a buffer member at the lower end of the rotating guard to mitigate the impact when the material collides with the rotating guard. There is one effect.

In addition, the present invention has the effect of precisely adjusting the rotation start and stop and the rotation speed of the motor by wireless control using a remote control or the like.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible, even if shown on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.

1 and 2 are schematic diagrams of a crane hook device according to a preferred embodiment of the present invention.

Crane hook device according to a preferred embodiment of the present invention is formed to include a hook block 20, the power providing unit 40, and the rotation guard (60).

Hook block 20 is suspended by lifting the rope tied the material (L), is connected to the trolley (not shown) and the rope (R) is a portion that rises or descends. The hook block 20 includes a gearbox in which gears are combined, and a hook-shaped hook portion provided at a lower portion of the gearbox. Although not shown in the drawing, the hook portion of the hook block may be any structure as long as it is capable of mounting a rope such as a rod shape. The hook block 20 is lowered or raised by interaction with a trolley (not shown). Specifically, when the rope is released and lowered, the hook block 20 approaches the ground (see FIG. 1), and when the rope is wound up, the hook block 20 is raised to raise the material L of the rotary guard 60. Upon contact with the bottom, the lifting of the hook block 20 is completed (see FIG. 2).

The power provider 40 is a part that provides rotational power to the rotation guard 60. The power supply unit 40 includes a motor and a reducer or ballast for controlling the rotation of the motor. The power supply unit 40 is fixed to the arm of the crane rather than moving in a long height range, such as the hook block 20, it can be stably supplied power from the crane without interference of the power cable. The power supply unit 40 will be described later.

The rotation guard 60 serves to rotate the hook block 20 and the material L by rotating by receiving rotational power from the power supply unit 40. Rotating guard 60 is formed in a hollow pillar shape, the lower end is opened so that the rope and hook block 20 can freely pass. In this case, the rotation guard 60 may be formed in various shapes such as a polygonal shape including a cylindrical shape or a square pillar shape.

3 shows an example of a rotating guard formed in a cylindrical shape.

The rotary guard 60 is provided below the power supply unit 40 and has a lower end and a portion of the upper end. The through hole provided at the top passes a rope connecting the trolley (not shown) and the hook block 20.

In addition, the upper surface of the rotation guard 60 is provided with a power transmission unit 64 for transmitting the power provided from the power supply unit 40 to the rotation guard (60). Bevel gears and the like may be used as the power transmission unit 64, the gears paired with the gears provided on the upper surface of the rotary guard 60 is provided in the power providing unit 40 is formed to mesh with each other.

The lower end of the rotary guard 60 is provided with a fixing member 62 for fixing the material (L). Fixing member 62 is to hold the material (L) in order to prevent the shaking of the material (L) suspended on the hook block 20 to be able to rotate with the rotation guard (60). The fixing member 62 may be formed in a shape protruding from the outer circumferential surface of the rotation guard 60, and preferably formed to cross at right angles with the axial direction of the material L so as to firmly fix the material. In addition, the fixing member 62 is preferably formed in an oblique direction with respect to the outer circumferential surface of the rotary guard 60 so as to be firmly fixed even in the case of a large size material. In addition, the fixing member 62 may be provided with a sliding function in order to be able to smoothly respond to a material of various thicknesses. The fixing member 62 is slid from the lower end of the rotary guard 60 according to the thickness of the material, so that the material can be fixed to the lower end of the rotary guard 60. In addition to the shape described above, the rotating guard may be any shape as long as it is capable of preventing and fixing material shaking.

Although not shown, the lower end of the rotation guard 60 is preferably provided with a shock absorbing member for mitigating the impact with the material (L). As described above with reference to FIG. 2, when the material L is placed on the hook block 20 and then raised, the hook block 20 is raised until the material L contacts the lower end of the rotation guard 60. Therefore, the moment the material L comes in contact with the lower end of the rotary guard 60, a significant impact can be applied to the material L. In order to mitigate such a shock, the shock absorbing member may be formed of a material such as rubber on the lower edge of the rotary guard 60.

4 and 5 are cross-sectional views for explaining the operation of the crane hook device according to an embodiment of the present invention. Hereinafter, the power supply unit is provided with a pair of the first power supply unit 40a and the second power supply unit 40b to enable bidirectional rotation of the rotation guard 60 as an example. Of course, only one power supply unit may be provided. In this case, the rotation guard is generally rotated in one direction, but in the case where the rotation direction of the motor can be changed, one power supply unit may enable bidirectional rotation. .

As shown in FIG. 4, the operation sequence when the rotation guard rotates in the clockwise direction is as follows.

The first power provider 40a includes a motor 42a, a reducer 44a, and a bevel gear 46a that rotates in the longitudinal direction. First, after mounting the material (L) to the hook block 20, the rope is wound around the material (L) in contact with the lower end of the rotation guard 60, so that the material (L) is fixed by the fixing member 62. .

When the motor 42a rotates in the direction of the arrow, the speed reducer 44a which is linked with the motor 42a by the gear rotates in the opposite direction of the motor 42a to adjust the rotation speed. Further, the longitudinal side bevel gear 46a is interlocked with the speed reducer 44a and rotates at a speed regulated by the speed reducer 44a.

The lateral side bevel gear 64 provided on the upper surface of the rotary guard 64 changes the rotation direction of the longitudinal side bevel gear 46a in the horizontal direction so that the rotary gear 64 can rotate.

Connection portions 52 and 54 are provided at the lower end of the first power providing unit 40a and the upper end of the rotation guard 64, respectively. The connection portion 52 may be formed in a circular shape at the lower edge of the first power providing portion 40a and may have a cross section having a “b” shape. The connecting portion 54 is formed in a circular shape on the upper edge of the rotation guard 64, it may be formed in the shape of the cross-section "b" to be engaged with the connecting portion (52). A ball bearing 56 may be provided between the connection portion 52 and the connection portion 54 so that the rotation guard 64 may rotate smoothly with respect to the first power supply portion 40a.

The user can precisely adjust the rotation start and stop of the motor and the rotation speed by using a remote controller or the like.

On the other hand, when the rotation guard rotates in the counterclockwise direction as shown in FIG. 5, the rotation directions of the motor 42b, the reducer 44b, the bevel gears 46b and 64, and the rotation guard 60 are shown in FIG. 5. Except that it is in the opposite direction to the case of 4 it is similar to the operation sequence of Figure 4 and will not be described in detail.

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions may be made by those skilled in the art without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane hook device, and can be widely applied to a construction site where various aerial works are frequent.

1 and 2 is a schematic view of the crane hook device according to a preferred embodiment of the present invention,

3 is a perspective view of the rotating guard,

4 and 5 are cross-sectional views for explaining the operation of the crane hook device according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

20-hook blocks 40, 40a, 40b-power provision

42a, 42b-motor 44a, 44b-reducer

52, 54-connection 56-ball bearing

60-Revolving Guard 62-Retaining Member

Claims (14)

In the rotatable crane hook device, Hook block for hanging the material; A power providing unit having a motor for providing rotational power; A rotation guard which rotates the hook block and the material by rotating by the power providing unit Rotatable crane hook device comprising a. The method of claim 1, The power supply unit rotatable crane hook device, characterized in that it comprises a reducer for adjusting the rotation of the motor. The method of claim 2, Rotatable crane hook device, characterized in that the bevel gear for transmitting power between the power supply and the rotating guard. The method of claim 1, Rotatable crane hook device, characterized in that the rotating guard is formed in a columnar shape of the lower end opening. The method of claim 4, wherein Rotating crane hook device, characterized in that the lower end of the rotating guard is provided with a fixing member for fixing the material. The method of claim 5, The fixed member is a rotatable crane hook device, characterized in that it comprises a buffer member for mitigating the impact with the material. The method of claim 1, The rotation guard is provided below the power supply, rotatable crane hook device, characterized in that the lower end of the power supply and the upper end of the rotation guard is provided with a connection for connecting to each other. The method of claim 7, wherein Rotatable crane hook device, characterized in that the ball bearing is provided between the connection of the power supply and the connection of the rotary guard. In the rotatable crane hook device, A hook block connected to the trolley of the crane hook device by a rope; A pair of power providing units including a motor for rotating the hook block and a speed reducer for decelerating the motor; And Rotation guard of the column shape provided below the power supply unit and surrounding the rope Rotatable hook device comprising a. The method of claim 9, The rotating guard is a rotatable crane hook device, characterized in that the lower end is formed in a polygonal column shape including a cylindrical shape or a square pillar. The method of claim 10, Rotating crane hook device, characterized in that the lower end of the rotating guard is provided with a fixing member for fixing the material. The method of claim 11, The fixed member is a rotatable crane hook device, characterized in that it comprises a buffer member for mitigating the impact with the material. The method of claim 9, The rotation guard is provided below the power supply, rotatable crane hook device, characterized in that the lower end of the power supply and the upper end of the rotation guard is provided with a connection for connecting to each other. The method of claim 13, Rotatable crane hook device, characterized in that the ball bearing is provided between the connection of the power supply and the connection of the rotary guard.

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