JP4795824B2 - Sensor moving device - Google Patents

Description

  The present invention relates to a moving device such as a detector attached to a ceiling surface, for example, a smoke detector or a heat detector.

  Fire detectors such as smoke detectors are obliged to perform functional tests on a regular basis. Therefore, conventionally, the following fire detector mounting device for ducts has been developed. In this device, the sensor mounting plate is pulled out from the window provided in the duct via the guide rail and the floating rail, and then the mounting plate is rotated up and down around the pin to maintain and inspect the sensor. It is made into the state which is easy to do (for example, refer patent document 1).

  The above-mentioned Patent Document 1 can be adopted when the sensor is located within the reach of a maintenance inspection worker (hereinafter simply referred to as “worker”), but the fire detector attached to the ceiling surface. As described above, when the worker is out of the reach of the worker, the worker has to bother to move to approach the sensor, which takes time, lowers work efficiency, and improves safety. There is also a problem.

  Therefore, a liquefied gas cylinder for cooling is installed in the vicinity of the tip of the support rod of the heating tester, the nozzle of the cylinder is supported and fixed upward, and an operation lever for pressing and holding the gas ejection push button is provided. Test devices have been developed (see, for example, Patent Document 2).

Japanese Utility Model Publication No. 54-40787 Japanese Utility Model Publication No. 58-142794

  Since the fire detector test apparatus of Patent Document 2 has to move the support bar to just below the fire detector and then push it up toward the fire detector, the setup until the test is performed as the ceiling surface becomes higher In addition, it takes a long time, and it must be aligned with the fire detector while moving an unstable heavy support rod. Therefore, it is heavy labor and the test work cannot be performed efficiently. In addition, since the fire detector is attached to the ceiling surface, it is difficult for the worker to visually inspect the insect screen, such as clogging of the insect screen.

  Furthermore, in power plants and the like, dangerous large equipment may be installed directly under the fire detector, but in such cases, the support rod cannot be moved directly under the fire detector. Even if the support rod can be moved to a position immediately below it, an electric shock may occur if the support rod is accidentally brought into contact with a power generator or the like, which is extremely dangerous.

  In view of the above circumstances, an object of the present invention is to enable maintenance and inspection work to be performed safely and easily.

The present invention provides a plate-like body that is disposed substantially in parallel with the ceiling surface at a predetermined position on the ceiling surface during fire monitoring , and the detector is fixed to the lower surface, and the ceiling surface that guides the movement of the plate-like body anda pair of parallel guide rails following the side wall surface from the guide rail, the plate-like body is moved into the sensor removal position upward along the ceiling surface when maintenance, the sensor removal A moving means for lowering the sensor from above the position toward the sensor removal position is provided , and the moving means includes a traction mechanism .

  The present invention is characterized in that the plate-like body is a shutter composed of a plurality of interlocking shutter portions, and the rear end portion of the shutter is positioned on the side wall surface and can be pulled. A signal line for connecting the sensor and the receiver is disposed on the rear surface of the shutter according to the present invention.

  Since this invention was comprised as mentioned above, a plate-shaped object can be drawn near to the position which the said worker can reach. Therefore, the worker can easily remove the sensor attached to the plate-like body and perform maintenance inspection. Further, the sensor can be inspected in detail by direct visual inspection. Furthermore, the removal position of the sensor can be set to an arbitrary safe position by selecting the arrangement position of the guide rail.

  In order to achieve the above object, the inventor does not move the worker to the vicinity of the fire sensor, but can move the sensor to a position where the worker can easily remove (sensor removal position). We thought that it should be done, and examined the concrete method. As a result, it has been found that a moving means provided with a guide means for attaching the sensor to the plate-like body and moving the plate-like body to the sensor detaching position may be used. The present invention has been made based on the above findings.

An embodiment of the present invention will be described with reference to FIG.
A power generation device 2 is disposed in the power generation chamber 1 of the power plant, and a pair of horizontal rails 5 a are fixed to the ceiling surface 3 above by a fixture 6. The horizontal rail 5a is continuous with the vertical rail 5c via the curved rail 5b. The vertical rail 5 c extends to the floor surface 11 along the side wall surface 9, and the vertical rail 5 c is fixed to the side wall surface 9 with a stopper 10. The lower end of the rail 5c does not necessarily need to be brought into contact with the floor surface 11, and the position thereof can be appropriately selected according to necessity. A series of rails including the horizontal rail 5a, the curved rail 5b, and the vertical rail 5c are referred to as “guide rails”.

  A plate-like body 13 is movably provided on the guide rail 5A. The plate-like body 13 is a shutter having a plurality of interlocking shutter piece portions 13 a, and a sensor mounting portion is provided on the shutter piece portion 13 b at the tip of the shutter 13. A fire detector, for example, a smoke detector 15 is detachably attached to the sensor mounting portion.

  A traction mechanism 17 is connected to the shutter piece 13 c at the rear end of the shutter 13. This traction mechanism pulls down the shutter 13 by operating the operation handle 17.

  A signal line 21 that connects the fire detector 15 and the receiver 19 is provided on the surface side of the shutter 13. The signal line 21 is provided with a stop portion at a predetermined interval, and this stop portion is fixed to the shutter piece portion 13a.

  In FIG. 1, the guide rails 5A and 5B with two shutters 13 are shown so as to sandwich the beam 8. However, since the guide rails 5A and 5B are the same, the description about the guide rail 5B is omitted. To do.

Next, the operation of this embodiment will be described.
During fire monitoring:
The fire detector 15 is mounted on a mounting portion of the shutter 13 supported by the guide rail 5 </ b> A, and is disposed at a predetermined position on the ceiling surface 3. The shutter piece 13 c at the rear end of the shutter 13 is located near the upper end of the side wall surface 9. Since the stop portion of the signal line 21 is fixed to the shutter piece portion 13a, the signal line 21 can be easily moved and can be prevented from hanging down and coming into contact with the power generation device 2 or the like.

During maintenance inspection:
The worker 23 moves to the vicinity of the sensor removal position P of the vertical rail 5c of the guide rail 5A. This position P is set to a height at which the worker can easily remove the sensor from the plate-like body 13 (a position that can be reached by the worker 23). When the operator rotates the operation handle 17 in a predetermined direction, the shutter 13 is pulled down and moves toward the floor surface 11 while being guided by the guide rail 5A. Therefore, the fire detector 15 provided in the shutter piece 13b slides up to the sensor removal position P along the ceiling surface 3 and then descends along the side wall surface 9 to the sensor removal position P. Reach (see guide rail 5B).
When the fire sensor 15 reaches the sensor removal position P, if it is not always necessary to remove the fire sensor 15, it may be inspected at that position.

  The worker 23 removes the fire detector 15 from the mounting portion of the shutter piece 13b, and then sets the fire detector 15 on the test device 25 to perform a function test. At this time, since the fire detector 15 is at hand, it is possible to check in detail the clogging of the insect screen in detail.

  After the test, if there is an abnormality, replace it with a new one, and if there is no abnormality, attach the fire detector 15 to the attachment portion of the shutter piece 13b and then rotate the operation handle 17 in the opposite direction. The shutter 13 rises while being guided by the guide rail, moves along the ceiling surface 3 and returns to the original position. Therefore, the fire detector 15 is accurately returned to the predetermined position.

  In addition, it may be necessary to change the installation position of the fire detector by changing the arrangement of the room. In this case, the installation position of the fire detector is changed, although it is within the guide rail installation range. Is possible.

The embodiments of the present invention are not limited to the above, and can be, for example, as follows.
(1) As a pulling mechanism, a motor mechanism that is electrically pulled by a main switch or the like is used instead of the operation handle.

(2) Position the signal line on the back side of the shutter. In this way, since the signal line cannot be seen, the appearance is improved.
(3) A means for guiding a plate-like body is provided instead of the shutter supported by the guide rail, and the sensor is removed after the plate-like body is moved to the upper position of the sensor removal position along the ceiling surface. It is also possible to employ a moving means for lowering the position.
(4) Locking means may be provided so that a third party cannot intentionally operate.

It is a perspective view which shows the Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Ceiling surface 5A Guide rail 5B Guide rail 9 Side wall surface 11 Floor surface 13 Plate-like body 15 Fire detector 17 Operation handle (traction mechanism)

Claims (3)

At the time of fire monitoring, a plate-like body that is arranged substantially in parallel with the ceiling surface at a predetermined position on the ceiling surface and the sensor is fixed to the lower surface, and the ceiling surface that guides the movement of the plate-like body from the ceiling surface to the side wall surface A pair of parallel guide rails ,
The guide rails, the plate-like body is moved into the sensor removal position upward along the ceiling surface when maintenance, comprising a moving means allowed to drop toward the sensor removal position from the detector unloading position above, The moving device of a sensor, wherein the moving means includes a traction mechanism . The sensor moving device according to claim 1 , wherein the plate-like body is a shutter constituted by a plurality of interlocking shutter portions, and a rear end portion of the shutter is positioned on a side wall surface and can be pulled. The sensor moving device according to claim 2 , wherein a signal line connecting the sensor and the receiver is disposed on a back surface of the shutter .

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