KR970003509B1 - Hook block of possible rotary adjusting - Google Patents

Abstract

A rope connected to steel structures is connected to a hook(3). While transporting the steel reinforcement with a crane to a assembly point, if the steel structures hanging from the hook(3) is out of the assembly point, pressing a remocon(13) can transmit a motion signal to a motor control unit(12) and make the motor to rotate. And the movement of the steel structures can be confirmed by observing on-off motion lamps installed in the hook block. When the steel structures are in place, assembly work can be done. And the hook can rotate forward and backward to adjust the position of the steel structures.

Description

Hook block for crane with adjustable hook rotation

1 is a state of use of the hook block for a general crane

2 is a perspective view of a conventional hook block

3 is a front view of a conventional hook block

Figure 4 is a side view of the hook block of the present invention

5 is a front view of the hook block of the present invention

6 is a block diagram of a remote control device used in conjunction with the hook block of the present invention

7 (A) is a side view of a state in which the steel frame is positioned using the hook block of the present invention

FIG. 7 (B) is a plan view of the steel frame which is positioned in FIG. 7 (A).

* Description of the symbols for the main parts of the drawings *

X: Hook Block 1: Chuck

2: trust bearing 3: hook

3a: shaft 4: pulley wheel

5: ring hole 10: motor

11: reducer 12: motor control device

13: remote radio controller 14: cover

Technical Field

The present invention relates to a hook block (hook block) connected to the rope of various cranes, such as tower crane (tower crane) used for raising and lowering various materials such as steel frame in the construction and civil engineering site, in particular the rotation of the hook (hook) It relates to a hook block for a crane that can be easily adjusted by remote control to place various materials such as steel frame.

Background of the Invention

Various cranes such as tower cranes are used to raise and lower various materials such as steel frame (hereinafter referred to as “steel frame”) at various construction sites such as architecture and civil engineering. In particular, tower cranes are indispensable in the construction of high-rise buildings.

And as shown in Figure 1, the crane is provided with a hook block (X) which is connected to the rope to move up and down and the hook is configured at the bottom. As shown in FIGS. 2 and 3 of a conventional hook block source, a chuck (1) serving as a frame, a thrust bearing (2) fixed to a lower side of the chuck (1) . It is installed rotatably by the thrust bearing (2) hook (3) to which the steel rope is connected, rotatably installed on the upper part of the chuck (1), the pulley wheel (4) is caught by the rope of the crane, and It consists of a ring hole 5 formed at the upper end of the chuck 1 for the convenience of transportation.

The hook 3 is configured to be rotatable so that when the hook of the steel frame is hooked to the hook 3, the hook 3 can be rotated in accordance with the direction in which the steel frame is placed. When the steel frame is placed in the installation place, the steel frame is rotated so that it can be accurately positioned in the desired direction.

In the conventional hook block as described above, since the hook 30 is rotatable by the thrust bearing 2, when the steel is raised or lowered, the steel frame is caused by the difference in weight between the steel and wind, the torsion recovery force of the wire, and other causes. It rotates. In many cases, the location of the steel frame is inconsistent with the assembly site. In this case, the steel frame should be rotated and positioned. In the related art, ropes are connected to both ends of the steel frame, and both ropes are properly pulled and placed in the assembly place.

Therefore, in order to position the steel frame to take the unsafe posture to take the rope takes unnecessary time, there is a problem that the worker must move to the rope position to pull the rope. In addition, since the worker's attention is on the steel frame is installed when the worker grabs the rope, there is a problem that the natural accident is not careful to include a risk of safety accidents.

The present invention has been drawn to solve the problems of the conventional hook block described above, and the hook (3) is reversed so that it can be conveniently, quickly and accurately positioned when moving the steel frame to the assembly place It is an object of the present invention to provide hook blocks for bent cranes.

Summary of the Invention

Hook block of the present invention for achieving the above object is provided with a forward and reverse rotation motor installed in the lower portion of the pulley wheel (4), and a reducer to reduce the shaft rotation of the motor to transfer to the shaft of the hook (3) And means for operating the motor in a remote radio control system.

Description of Specific Embodiments of the Invention

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

Hook block for the crane of the present invention, as shown in Figures 4 to 6, the forward and reverse rotation motor 10 is fixed to the chuck 1 in the lower position of the pulley wheel 4 and the In order to control the motor 10 and the speed reducer 11 provided between the motor shaft and the shaft 3a of the hook 3 to reduce the rotation of the motor side to the side 3a of the hook 3. A remote controller (13) is provided and includes a motor controller (12) configured to control forward, reverse, and stop of the motor (10), and remotely remotely control the motor controller (12). ) Is provided in pairs.

Hook 30 is installed in the thrust bearing (2) as in the conventional case so that it can rotate while receiving a downward force, the configuration for the chuck (1), pulley wheel (4), ring hole (5) Is the same as Reference numeral 14 denotes a cover surrounding the motor 10, the reducer 11, and the motor control device 12.

As shown in FIG. 4, the on / off lamp, the stop lamp, the forward rotation lamp, and the reverse rotation lamp are configured on the side surface of the cover 14 so that the operation state of the motor 10 can be checked even at a long distance. These lamps are turned on and off according to the operating state of the motor 10 by the motor control device 12, respectively.

As shown in FIG. 6, the motor control apparatus 12 and the remote radio controller 13 are capable of controlling the motor 10 in a state of high speed reverse rotation, high speed forward rotation, low speed forward rotation and stop.

Since specific circuits and methods for the above control are widely known, a detailed description thereof will be omitted.

The hook block for a crane of the present invention as described above acts as follows.

First, hook 3 is attached to the rope connected to the steel frame to be assembled. Next, the crane is operated to move the steel frame to the assembly site as shown in FIG. 7 (A) (B). When the steel frame suspended from the hook 3 is displaced from the assembly position, the remote controller 10 is remotely controlled to send an operation signal to the motor controller 12 to rotate the motor 10.

The remote radio controller 13 is composed of a high speed reverse button, a high speed forward button, a low speed reverse button, a low speed forward button, a stop button, and a power on / off button. Press to lock the steel frame. At this time, by checking the on, off state of the various lamps configured in the hook block to check the operating state of the steel frame. When the steel frame is placed in place, it is assembled in a conventional manner.

As described above, the hook block of the present invention is provided with means capable of forward and reverse rotation of the hook 3 in itself, and the forward, reverse rotation and stoppage of the hook 3 is provided to the remote radio controller 13. Since it is possible to control from a long distance, the work of adjusting the position of the steel frame near the assembly place is very convenient and can be performed in a short time.

In addition, since the steel frame positioning operation is simple, the operator can work safely, the motor 10 and the reducer 11 has the effect of precisely performing the rotation of the steel frame.

Claims (4)

Cheeks (1). A thrust bearing 2 fixed to the lower side of the chuck 1, a hook 3 rotatably installed by the thrust bearing 2, and a pulley wheel rotatably installed on the chuck 1 ( In the hook block for crane comprising 4), A motor shaft fixed to the chuck 1 at a lower position of the pulley wheel 4 and a motor shaft for rotating the motor shaft and decelerating the rotation of the motor shaft and transferring it to the shaft 3a of the hook 3; A reducer 11 provided between the shaft 3a of the hook 3, The motor control device 12 is configured to include a receiving unit for controlling the motor 10 and to control the forward, reverse rotation and stop of the motor 10, Hook block for a crane, characterized in that provided as a group of a remote radio controller 13 to remotely control the motor control device 12. The hook block for crane according to claim 1, wherein the motor (10), the reducer (11) and the motor control device (12) are wrapped by a cover (14). 3. The cover 14 is provided with a power on / off lamp, a stop lamp, a forward rotation lamp, and a reverse rotation lamp in order to confirm the operation state of the motor 10. Each hook block for a crane, characterized in that the motor control device 12 is turned on, off according to the operating state of the motor (10). According to claim 1, wherein the motor control device 12 and the remote radio controller 13 is capable of controlling the motor 10 in the state of high speed reverse rotation, high speed forward rotation, low speed reverse rotation, low speed forward rotation and stop Hook block for crane characterized in that.