JP4145841B2 - Hanging gondola equipment - Google Patents

Description

  The present invention relates to a hanging gondola facility that is configured to suspend and support a gondola by a suspension wire and to move up and down along a wall surface.

  This type of gondola equipment is used when performing various construction work on the outer wall at the construction work site, or when performing window cleaning work in a high-rise building, as shown in FIG. The gondola 4 is suspended and supported by two suspension wires 3 from the suspension arm 2 installed on the roof of the building 1, and the gondola 4 is moved along the wall surface by winding and unwinding the suspension wire 3 with a hoisting device (not shown). It is configured to move up and down.

In such a hanging type gondola facility, as shown in FIG. 3, the gondola 4 may swing greatly due to the influence of the wind. The gondola 4 is prevented from rolling by the tension of the suspension wire 3 by extending to the ground surface and fixed at its lower end to the ground surface by the anchor. And a method in which the gondola 4 is pressed against a wall surface by a propulsive force of a fan attached to the gondola 4 is disclosed.
Japanese Unexamined Patent Publication No. 2000-45512

  However, none of the conventional methods as described above can achieve a sufficient effect, and it is almost impossible to deal with complex vibrations or large fluctuations caused by strong winds especially when applied to high-rise buildings. It is powerless and cannot be an effective measure. In addition, the conventional system has problems such as hindering the raising and lowering of the gondola, and causing the work efficiency to be lowered because it is necessary for the operator who is on the gondola to perform the operation while judging the situation.

  In view of the above circumstances, an object of the present invention is to provide an effective and appropriate suspended gondola facility that can reliably prevent vibration and swinging of the gondola.

  The present invention is configured to prevent the gondola from vibrating and swinging by hanging and supporting the gondola with a suspension wire and elevating it along the wall surface, and fixing the control wire connected to the gondola to the ground surface via a winding device The suspension type gondola equipment can be wound and unwound by a winding device installed on the ground surface, and the gondola is equipped with a vibration sensor that detects the vibration, and the suspension wire and control wire Tension sensors that detect these tensions are installed, and the control device operates the winding device based on the vibration sensor and the detection results of the tension sensor to adjust the tension of the control wire every moment, thereby vibrating and shaking the gondola. Is configured to control movement. In the present invention, a transmission line for transmitting a detection signal of a vibration sensor or a tension sensor to a control device installed on the ground surface can be integrated into the control wire.

  According to the present invention, when the winding device is operated by the control device, the winding device functions as an active damper for canceling the vibration of the gondola via the control wire, and thus the vibration of the gondola is automatically performed. It can be canceled reliably and instantaneously, it can prevent the gondola from swinging greatly, and there is no need for the operator to perform an operation for preventing the swing on the gondola. .

  In addition, by integrating a transmission line for transmitting the detection signals of the vibration sensor and tension sensor to the control device, it is not necessary to use a special transmission line for that purpose, thus simplifying the overall equipment configuration. And weight reduction.

  1 to 2 show an embodiment of the present invention. The suspension type gondola equipment of this embodiment basically has a gondola 4 that is attached to two suspension wires 3 from a suspension arm 2 installed on the roof of a building 1 as in the conventional one shown in FIG. The gondola 4 is lifted and lowered along the wall surface by supporting the suspension and winding and unwinding the suspension wire 3 by a winding device (not shown).

  In addition to the basic configuration as described above, in the hanging type gondola equipment of the present embodiment, a winding device in which two control wires 5 are connected to the bottom of the gondola 4 and these control wires 5 are installed on the ground surface. 6 so that the gondola 4 can be fixed to the ground surface via the control wire 5 and the winding device 6 so that it can be suspended and supported only by the suspension wire 3. Thus, the gondola 4 can be stably held. Moreover, in the hanging type gondola equipment of the present embodiment, as shown in FIG. 2, the control device 7 controls the winding device 6 to tension the control wire 5 with a predetermined tension. The swing of the gondola 4 can be effectively prevented by the tension.

  Further, as shown in FIG. 2, the gondola 4 is provided with a vibration sensor 8 for detecting the vibration of the gondola 4 on its front and side surfaces, and the suspension wire 3 and the control wire 5 detect their tensions. The tension sensors 9 are attached to each other, and detection signals of the vibration sensor 8 and the tension sensor 9 are transmitted to or transmitted to the control device 7 described above. An accelerometer can be preferably used as the vibration sensor 8, and a strain gauge can be preferably used as the tension sensor 9.

  The control device 7 constantly controls the required torque of the winding device 6 on the basis of signals from the vibration sensors 8 and the tension sensors 9 to constantly adjust the tension of the control wire 5 appropriately, and the gondola 4 is adjusted according to the tension. Is reliably prevented.

  That is, when the gondola 4 starts to vibrate, the vibration sensor 8 detects the magnitude and direction of the vibration, and the accompanying tension change of the suspension wire 3 and the control wire 5 is detected by the tension sensor 9. The detection signal is sent to the control device 7 in real time. The control device 7 processes these data to grasp the response characteristics (displacement, speed, acceleration, vibration mode) of the gondola 4 and determines whether or not it exceeds a preset specified value. If the value is exceeded, the tension of the control wire 5 necessary to cancel it is calculated, and the control signal is output to the winding device 6 to change the torque instantly, thereby the optimum tension for the control wire 5 To cancel the vibration of the gondola 4.

  As described above, the suspension-type gondola equipment of the present embodiment is an active device for canceling the vibration of the gondola 4 via the control wire 5 by the control device 7 controlling the winding device 6. Therefore, when the gondola 4 starts to vibrate slightly for some reason, the vibration is automatically and surely canceled out instantly, and the gondola 4 swings greatly as in the prior art. Such a situation can be prevented in advance, and work safety on the gondola can be naturally improved. Further, since it is not necessary for the worker to perform an operation for preventing the swing on the gondola as in the prior art, it is possible to avoid the problem that the work efficiency is lowered for the swing and the prevention. .

  Note that the control wire 5 may be simply suspended from the gondola 4 during normal times, but if the appropriate tension is applied to the control wire 5 even during normal times, the gondola 4 is simply suspended and supported. It is preferable to do so because it can be held stably. However, applying an excessive tension to the control wire 5 is not preferable because an unnecessary suspension load is always applied to the suspension wire 3 and the suspension arm 2, and a minimum tension is normally applied to the control wire 5. The minimum tension necessary to cancel the vibration should be added when the vibration is detected from the state.

  Further, when the gondola 4 is moved up and down, the take-up device 6 is driven in synchronism with the hoisting device of the gondola 4 so that the control wire 5 is maintained at the appropriate tension required at that time and the gondola 4 is obstructed. It can be lifted up and down.

  Further, it is conceivable that the detection signals of the vibration sensor 8 and the tension sensor 9 are transmitted to the control device 7 wirelessly. However, it is realistic to hang an appropriate transmission line for this purpose from the gondola 4 and connect to the control device 7. It is. In that case, the transmission line may be provided separately from the control wire 5, but it is also possible to incorporate the transmission line integrally with the control wire 5, and in that way, a special transmission line can be omitted, so that Simplification and weight reduction of the entire configuration can be achieved.

  In any case, in order to avoid an increase in suspension load, the control wire 5 is preferably as light as possible. Therefore, the control wire 5 is made of various high-strength fibers having sufficient strength even with a small diameter. It is preferable to adopt. In particular, the carbon fiber wire is optimal as the control wire of the present invention because it has not only sufficient strength but also conductivity so that it can also be used as a transmission line.

It is a figure which shows the outline | summary of the hanging type gondola equipment which is one Embodiment of this invention. FIG. It is a figure which shows an example of the conventional hanging type gondola equipment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Building 2 Suspension arm 3 Suspension wire 4 Gondola 5 Control wire 6 Winding device 7 Control device 8 Vibration sensor 9 Tension sensor

Claims (2)

A suspension system with a structure that prevents the gondola from vibrating and swinging by suspending and supporting the gondola with a suspension wire and elevating it along the wall surface, and fixing the control wire connected to the gondola to the ground surface via a winding device A gondola facility,
The control wire can be wound and delivered by a winding device installed on the ground surface. A vibration sensor that detects the vibration is attached to the gondola, and a tension sensor that detects the tension is attached to the suspension wire and the control wire. A control device is provided that controls the vibration and oscillation of the gondola by operating the winding device based on the detection results of the vibration sensor and the tension sensor to adjust the tension of the control wire every moment. A hanging gondola facility.   It is the hanging type gondola equipment according to claim 1, wherein a transmission line for transmitting a detection signal of a vibration sensor or a tension sensor to a control device installed on the ground surface is integrated into a control wire. A hanging gondola facility.

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