JPH046465Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a mechanical parking lot system that suddenly stops operation in the event of an accident due to a failure of the device during operation or the ejection of a stored car. It concerns safety equipment.

[Prior Art] In mechanical parking lots such as vertical circulation type, horizontal circulation type, box type circulation type, and multilayer circulation type, phototubes 2 and 3 are installed in front and behind the storage space for cars 1, as shown in Fig. 3A. It is confirmed whether the delivery vehicle 1 is accommodated in the carrier 4 or not.

[Problems to be Solved by the Invention] However, in the above-described method, when the vehicle is parked in a position where the wheels are at the top of the car stop 5, the phototube-based detection device determines that the vehicle is in the normal position even if the parking brake is forgotten. If the machine is operated in this condition, the vibration will cause the car to fly out of the carrier. Even if such an accident occurs, it is difficult to detect it during operation due to the mechanical structure. In addition, in case of forgetting to apply the handbrake, a car stopper 5 is installed at the two locations as shown in Figure 3A to prevent the vehicle from moving. 1' may cause the car to stop before the car stop, in which case the car stop 5 has no effect.

[Means for solving the problem] The present invention was made in view of the above circumstances,
The mechanical parking lot includes a microphone installed inside the mechanical parking lot, and a detector connected to the microphone and activated when an electric signal output from the microphone exceeds a required level to stop the drive of the mechanical parking lot. It is characterized by:

[Effect] When an accident occurs, interference between the car and the device causes
Alternatively, impact noise is generated due to interference between the carrier and the device. This impact sound is detected by a microphone, and if the impact sound exceeds a predetermined level and the electrical signal output from the microphone exceeds the required level, the detector is activated and immediately stops the machine. urge

[Example] Embodiments of the present invention will be described below based on the drawings.

A microphone 7 is provided inside a mechanical parking lot (the figure shows a vertical circulation parking lot) 6, and the microphone 7 and a detector 8 are connected. The microphone 7 detects sounds inside the parking lot and sends an electrical signal to a detector 8, which is equipped with an internal relay 9 that becomes activated when the electrical signal exceeds a required level. ing. An emergency stop relay 10 is connected to the internal relay 9, and the drive of the parking lot is stopped by the operation of the emergency stop relay 10 of the drive control device.

Next, the operation will be explained.

If the car 1 moves within the carrier 4 and interferes with the device,
Alternatively, an impact noise is generated due to an accident such as when a pallet removable carrier (for parking with a built-in turntable) interferes with the carrier due to a misfitting error. Microphone 7 detects this impact sound, and when the magnitude of this impact sound exceeds a predetermined level, internal relay 9 is activated by an electric signal to detector 8. The relay 10 is activated to stop driving the device.

In the above embodiments, the detector, relay, etc. are configured with contact type, but it goes without saying that they may be configured with non-contact type, microcomputer, etc.

[Effects of the invention] As described above, according to the present invention, the following excellent effects can be exhibited.

() Even if an accident occurs, it can be stopped with only minor damage.

() It is possible to detect abnormal sounds before a failure occurs and predict failures.

() The configuration is extremely simple and inexpensive.

() No modification of the machine is required for installation.
It can be easily added to existing mechanical parking lots.

[Brief explanation of the drawing]

FIG. 1 is an overall explanatory diagram of an embodiment of the present invention, FIG. 2 is a schematic circuit diagram of the embodiment, and FIGS. 3A and 3B are explanatory diagrams of a conventional example. 1 and 1' are cars, 2 and 3 are photocells, 4 is a carrier, and 5
6 indicates a parking lot, 7 indicates a microphone, 8 indicates a detector, 9 indicates an internal relay, and 10 indicates an emergency stop relay.

Claims (1)

[Scope of utility model registration request] A microphone installed inside the mechanical parking lot,
A safety device for a mechanical parking lot, comprising a detector connected to the microphone and activated when an electric signal output from the microphone exceeds a required level to stop the drive of the mechanical parking lot.