JP2590938Y2 - Hanging jig with automatic posture control function for suspended load - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an improvement in a lifting jig used for a cargo handling operation by a crane, and more particularly to a lifting jig having a posture control function of a suspended load.

[0002]

2. Description of the Related Art It is well known that a crane is used to carry in materials at a construction site such as a high-rise building. By the way, when materials, such as materials, are suspended by a crane, generally, due to the twisting of the suspension wires and the effect of wind,
In many cases, the suspended load turns and the load swings. This tendency is remarkable especially at sites where the load is high and the wind is susceptible to wind, such as when the suspended load is a long object or when building a high-rise building.

When a suspended load turns or swings, it is difficult to efficiently suspend the suspended load at a predetermined position and location. In particular, when there are other structures or other obstacles in the vicinity, not only efficiency of the work but also safety of the work becomes a problem.

Therefore, as means for solving such a problem, a lifting jig has been devised which can control the posture of a suspended load as disclosed in Japanese Utility Model Laid-Open No. 3-38890. The feature of this hanging jig is that a propulsion device that generates a propulsion force in the horizontal direction at both ends of the hanging jig, specifically, a fan is installed, and one of the fans is operated, and the fan is operated. The lifting tool is rotated using the thrust force, and the posture of the suspended load is directed in a desired direction.

[0005]

However, in the conventional hanging device, the direction of the suspended load is controlled by rotating the hanging device by the thrust of one of the fans. That is, the direction of the suspended load is controlled by applying a thrust to only one side of the suspending tool. For this reason, there is a problem that the balance of the suspended load suspended through the suspending tool is broken, and the suspended load tends to be unstable. That is, there has been a problem that load fluctuation remains. Particularly in the construction of high-rise buildings where the influence of wind is large, the tendency is remarkable when such a one-sided control type of hanging tool is used for the loading and loading work of materials such as precast concrete slabs. There is a problem that the safety of the work itself may be impaired.

This invention not only solves the drawbacks and problems of such a conventional hanging device, that is, a one-side control type hanging device, but also has a function of automatically controlling the posture of the suspended load. It was devised for the purpose of providing tools.

[0007]

In order to achieve the above object, according to the present invention, a suspension beam suspended horizontally by a crane is provided at both ends of the suspension beam in the direction orthogonal to the beam, and the operation is switched. A fan that generates a thrust in the horizontal direction that allows air to be blown in both forward and reverse directions, a power unit provided on the hanging beam, and a driving unit that rotationally drives the fan, and an operation unit that operates the power unit, In a lifting jig having a posture control function of a suspended load in which the operation unit is remotely operated by a wireless communication means to control the direction of the suspended beam, first, the suspension beam is transmitted from a predetermined reference position on the ground. And a direction detecting device for directly detecting the direction of the suspended beam with respect to the ground. Although the azimuth magnet is used as the azimuth detecting device, a gyro compass, a rate gyro, or the like may be used. Then, the detection data by the laser light receiving device and the detection data by the azimuth detection device are compared and calculated by a small computer, the operation unit is controlled based on the calculation result, and thus the rotational speeds of the both fans, and It is characterized in that the direction of the suspension beam is automatically controlled by controlling the rotation direction to the same amount and the opposite direction. The location of the small computer is not particularly limited,
It may be a suspension beam or a driver's seat of a crane, or may be provided at an appropriate external location.

[0008]

As described above, the hanging jig according to the present invention is provided with fans having opposite thrust directions and the same blowout amount at both ends of the suspension beam, and the thrust generated by both fans is reduced. The suspension beam is swiveled using the suspension beam, and the posture of the suspended load suspended by the suspension beam is controlled. Therefore, the balance of the suspended beam is not broken, and the posture of the suspended load is always accurately controlled in a stable state. . In addition, the operation unit is configured as a wireless remote control system, and a laser light receiving device that receives a reference laser beam transmitted from a predetermined reference position on the suspended beam to the suspended beam, and a direction detecting device that directly detects the direction of the suspended beam with respect to the ground. Is provided, and the detection data by the laser light receiving device and the detection data by the azimuth detection device are compared and calculated by a small computer, and the operation unit is controlled based on the calculation result, whereby the rotation speeds of both the fans and By controlling the rotation direction to the same amount and in the opposite direction, the posture of the suspended load can be automatically controlled, so that the work to carry in materials at high places can be performed extremely efficiently and safely. .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the suspension jig according to the present invention will be specifically described with reference to the embodiments shown in the drawings. FIG. 1 is a plan view showing a conceptual configuration of the hanging jig according to the present invention.
Is a front view thereof. As already explained, this invention is based on a suspension beam 1 suspended horizontally by a crane.
And two fans 2 and 2 provided at both ends thereof, and a power unit 3 that rotationally drives the two fans 2 and 2. First, both fans 2 and 2 are connected to the jet flow a of the right fan 2 and the left fan 2 as shown in FIG. 1 so that the thrust acts on the suspension beam 1 in the opposite direction. Is set to be opposite to the jet flow a. Therefore, in this case, the suspension beam 1 is turned in the A direction. That is, it is turned counterclockwise. Conversely, when the jet flow b of both fans 2 and 2 is used, the suspension beam 1 is turned clockwise B. Reference numeral 5 denotes a suspended load suspended on the suspension beam 1.

The means for reversing the flow direction of the jet is to transmit the torque from the power unit 3 to the fans 2 and 2 in opposite directions, or simply to measure the torsion of the blades in the fans 2 and 2. The reverse is acceptable. Further, when a larger thrust is required, a blower may be used instead of the fan. Power unit 3
In the embodiment, the engine unit is configured by the engine generator and the electric motor. However, a power unit of a hydraulic motor type including a hydraulic power unit may be used.

As means for turning the suspended beam 1, that is, controlling the attitude of the suspended load 5 by turning, by a wireless remote control method, the configuration is not shown in the drawing, but is provided on the side of the suspended beam 1. A receiver is provided, and an operator sends a control signal to the receiver from or on the ground. That is, it is configured to transmit by transmitting a control signal from a transmitter (a hand-operated type transmitter). More specifically, the operation unit 4 is operated by a control signal from a receiver provided on the suspension beam 1 side, and the power unit 3 is operated by the operation to remotely control the fans 2 and 2. .

The automatic attitude control means of the suspended load, which is a feature of the hanging jig according to the present invention, is not shown in the drawing, but is provided from a specific reference position, for example, a predetermined reference position on the ground. And a laser light receiving device for receiving the reference laser beam is provided on the suspended beam 1 side, and a directional magnet for directly detecting the orientation of the suspended beam 1 with respect to the ground is mounted on the suspended beam 1 side. Then, the detection data by the laser receiving device and the detection data by the compass are input to a small computer provided at an appropriate location, and the result of comparison between the detection data by the laser receiving device and the detection data by the compass is calculated. The power unit 3 is controlled via the operation unit 4 on the basis of the output, and the rotational speeds of the right and left fans 2 and 2 and the rotational directions thereof are controlled in the same amount and in opposite directions, so that the suspension beam 1 is controlled, and as a result, the posture of the suspended load is controlled. FIG. 3 is a system diagram showing a control system for a hanging jig according to the present invention.

[0013]

[Effects of the Invention] As described above, the hanging jig according to the present invention has a laser receiving device for receiving a reference laser beam transmitted from a predetermined reference position on the ground to a hanging beam, and a directing direction of the hanging beam with respect to the ground. Equipped with an azimuth detecting device (azimuth magnet) for detection, a comparison operation is performed by a small computer between the two detection data, and based on the operation result, the power unit is controlled via the operation unit described above. The automatic operation of the fan can be performed efficiently and safely in a short period of time, even when a material is suspended and carried in several hundred meters above a skyscraper or the like.

[Brief description of the drawings]

FIG. 1 is a plan view showing a conceptual configuration of a hanging jig according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a system diagram showing a control system for a hanging jig according to the present invention.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeru Sakamoto 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Inside Taisei Corporation (72) Inventor Tadataka Uchida 2-4-1 Marunouchi, Chiyoda-ku, Tokyo In Mitsubishi Estate Co., Ltd. (56) References JP-A-62-46894 (JP, A) JP-A-59-104259 (JP, A) JP-A-58-139985 (JP, A) (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B66C 13/00-13/56 B66C 1/00-1/68

Claims (1)

(57) [Scope of request for utility model registration] 1. A suspended beam suspended horizontally by a crane, and provided at both ends of the suspended beam so as to have their axial directions aligned in a direction orthogonal to the beam. A fan for generating a thrust in the horizontal direction, a power unit provided on the suspension beam for driving the fan to rotate, and an operation unit for operating the power unit, wherein the operation unit is remotely operated by wireless communication means. A suspension jig having a posture control function of a suspended load so as to control a direction of the suspended beam, wherein the suspended beam has a laser receiving device that receives a reference laser beam transmitted from a predetermined reference position on the ground. An azimuth detecting device for directly detecting the azimuth of the suspended beam with respect to the ground, and data detected by the laser receiving device and an azimuth detecting device The detected data is compared and calculated by a small computer, and the operation unit is controlled based on the calculation result, thereby controlling the rotation speeds of the two fans and the rotation directions thereof in the same amount and in opposite directions. A hanging jig having an automatic posture control function of a suspended load, wherein a direction of the hanging beam is automatically controlled.