Patent Application
20070035393
The present invention relates to a safety device for a feeding or conveyor belt for feeding waste materials to a waste material press, to provide transportable bales.
It is known in the prior art to use for pressing several types of waste or refuse materials, large presses, conventionally comprising accumulating chambers supplied, through a feeding or conveyor belt, with the waste materials such as paper, paperboard, plastic materials or metal scraps to be pressed.
Said waste materials being usually supplied to the press by a great length feeding or conveying belt movable in a channel and along a slanted surface and ending at a press loading end.
As the press chamber has been sufficiently filled-in by waste materials, said waste materials are pressed by powerful hydraulic rams and the thus made bales are then strapped.
Both the above mentioned waste material press and feeding belt pertain to the prior art and accordingly they will not be disclosed in further details.
A drawback of the above mentioned prior waste material pressing system is that, should a person by chance fall into the channel in which the waste material feeding belt travels, a serious accident could occur, for example if the person, having fainted and fallen on the moving feeding belt, is not immediately noticed by the operators assigned to the press room.
Accordingly, the aim of the invention is to overcome the above mentioned drawbacks by providing a safety device for an operator operating a waste material press, supplied with waste materials by a feeding or conveying belt.
The device according to the invention is characterized in that each operator accessing the press room is equipped with a recognizing or detecting signal emitting device adapted to emit a codified and personal recognizing signal for each press operator, which signal can be detected by a detecting device provided at the press room inlet, that along the waste material feeding belt are also provide a plurality of detecting devices for detecting the presence of a person provided with the signaling device, that if a person not provided with the detecting device accesses the press room, then an alarm signal is emitted and that, also in the case in which a person having the signaling device is present, on the feeding belt an alarm signal is generated thereby switching off the operation of the feeding belt and of the press.
The subject matter of the present invention will be disclosed in a more detailed manner hereinafter with reference to an embodiment thereof, given only by way of an example and shown in the accompanying drawings, where:
As shown in
In said room 2 is provided a detecting device 6 for detecting if the person 1 is equipped with a signaling device 7, including codified and customized signaling cards 200.
The device 6 is a codified and personal device, thereby allowing to monitor a proper operation of the electronic card assigned to a given operator, as well as inlet and output data related to the dangerous zone.
In said room 2 is moreover provided a red/green light signaling device 100, allowing an operator to access the press room only when a “green” light is on.
Then, if the device 6 detects that the person 1 is equipped with a safety device 7, then said person 1 will freely access, through the output 3, to the feeding belt 5 and press 16 room 4.
On the other hand, if the person 1 exits the room 2 without the signaling or detecting device 7, then this would be detected by the detecting device 6 which will immediately provide an alarm signal through an alarm device 8, for example a siren or other acoustic device.
Above said feeding belt 5 are provided further detecting devices 10 for detecting, for example in a case of an accidental falling on the belt 5 of a person having a signaling device 7, the presence of this person. Thus, through the device 8 an alarm signal will again be generated, while simultaneously switching off both the conveyor belt 5 and the driving of the press 16 closing means.
Considering that the conveying or feeding belt 5 is a comparatively long in length, to provide maximum safety, a plurality of detecting devices 10 are advantageously provided along the feeding or conveying belt 5.
Due to the obligation, valid for all the persons operating in the very dangerous region of the waste material feeding belt 5 (coupled to the waste material press 16), of moving in the press 16 shed with a signaling device 7 designed to emit signals to be detected by one or more detecting devices 6, 10 arranged outside of the press zone 16, as well as along the feeding belt 5 feeding the press 16 with the waste materials, maximum safety for the persons operating the pressing press is assured, in particular in performing dangerous operations near the feeding belt 5, for which it is frequently necessary to remove material pieces which must not be pressed, or for aligning, if it is necessary, projecting waste pieces to provide a proper supplying to the press 16.
| Number | Date | Country | Kind |
|---|---|---|---|
| MI2005A-001381 | Jul 2005 | IT | national |
