CN201395408Y - Steel wire stripping detection device for steel wire belt conveyer - Google Patents

Abstract

The utility model discloses a steel wire stripping detection device for steel wire belt conveyer; the detection device comprises a bracket, detection parts and a detection circuit; two detection partsare respectively arranged under the conveying belt and the return belt of the belt conveyer; each detection part comprises two mutually-insulated steel ropes arranged on the bracket, the detection steel ropes are electrically connected with the detection circuit through conducting wires respectively. When bare and stripped steel wires move along with the belt and touch a pair of detection steel ropes, a relay coil is electrified and a normally-closed contact is disconnected, then the electric control circuit of the belt conveyer is cut off and stopped for maintenance, so as to eliminate safety hidden trouble. The self-locking of detection circuit is realized through a self-locking circuit composed of a normally-open contact and a reset switch of relay so that the detection effect is improved.

Description

Wire belt conveyer steel wire peels off detecting device

Technical field

The utility model relates to the detection technique of wire belt conveyer, more particularly, relates to a kind of wire belt conveyer steel wire and peels off detecting device, and this detecting device can effectively detect the exposed of steel wire and peel off.

Background technology

The silk core belt is commonly called as and is wire belt, it is development and come on the basis of normal tape, promptly in normal tape parallel laid the steel rope of tens of certain diameters, to improve the mechanical strength and the tensile property of adhesive tape, generally apply on the travelling apron of big flow, long distance.Because the difference of length of tape, each root steel wire often has a plurality of welds in same adhesive tape, and factor such as deals with during aging, the wire joint place welding of adhesive tape improperly, all can cause steel wire exposed and peel off.In case after steel wire exposed and flakes off into certain-length, when travelling apron moved, steel wire just can be wrapped on head (tail) wheel shaft of travelling apron, the wheel shaft generation friction with running very easily leads to fire accident.

At present, have much for the monitoring and the protected mode of travelling apron, the most commonly used having prevents that skidding of the motionless or slow motion of travelling apron great wheel running adhesive tape from detecting and prevent that the travelling apron sideslip from detecting.In addition, the lobe that is specifically designed to the wire belt conveyer in addition detects detecting device.But up to the present the exposed detection technique of peeling off of steel wire at the wire belt conveyer does not also have, and makes the wire belt conveyer in operational process, exists serious potential safety hazard all the time.

The utility model content

At the above-mentioned shortcoming that exists in the prior art, the purpose of this utility model provides a kind of wire belt conveyer steel wire and peels off detecting device, this detecting device can detect exposed the peeling off effectively of steel wire, and avoids the wheel shaft of steel wire and travelling apron to twine.

For achieving the above object, the utility model adopts following technical scheme:

This wire belt conveyer steel wire peels off detecting device and comprises support, detection part and testing circuit, two detection parts are located at the belt conveyor and the return belt below of travelling apron respectively, each detection part comprises two mutually insulateds and is located at detection cable wire on the support, detects cable wire and is electrically connected with testing circuit by lead respectively.

Described testing circuit comprises a low-voltage dc power supply and a relay, the two ends of low-voltage dc power supply link to each other with two leads that detect cable wire respectively, relay pack vinculum circle and normally closed contact, coil is connected on the lead that detects between cable wire and low-voltage dc power supply one end, on the electric control loop that is connected on the wire belt conveyer of normally closed contact.

Described relay also comprises an open contact, and open contact one end links to each other with the lead that another detects cable wire, and the other end is connected to coil and and detects between the cable wire.

One end of described open contact also is connected with a reset switch, and the other end of reset switch is connected to coil and and detects between the cable wire.

The detection cable wire of described two detection parts is in parallel by lead.

In technique scheme, wire belt conveyer steel wire of the present utility model peels off detecting device and comprises support, detection part and testing circuit, two detection parts are located at the belt conveyor and the return belt below of travelling apron respectively, each detection part comprises two mutually insulateds and is located at detection cable wire on the support, detects cable wire and is electrically connected with testing circuit by lead respectively.When the exposed steel wire that peels off moves with belt, touch simultaneously on a pair of detection cable wire, it is electric that relay coil is got, and normally closed contact disconnects, thereby makes the electric control loop dead electricity of travelling apron and stop, and arranges maintenance then, has eliminated potential safety hazard.By the open contact of relay and the latching circuit of reset switch formation, can realize self-locking to testing circuit, improve and detect effect.

Description of drawings

Fig. 1 is the running condition figure that wire belt conveyer steel wire of the present utility model peels off detecting device;

Fig. 2 is the structural representation of detecting device of the present utility model;

Fig. 3 is the testing circuit schematic diagram of detecting device of the present utility model.

The specific embodiment

Further specify the technical solution of the utility model below in conjunction with drawings and Examples.

See also Fig. 1～shown in Figure 2, wire belt conveyer steel wire of the present utility model peels off the inboard that detecting device 10 is located at the head of wire belt conveyer 1 (tail) wheel shaft 2, comprise support 11, detection part and testing circuit, two detection parts are located at the belt conveyor 3 and return belt 4 belows of travelling apron 1 respectively, are respectively applied for steel wire 5 exposed the peeling off of detecting belt conveyor 3 and return belt 4.Each detection part comprises two mutually insulateds and is located at detection cable wire 12 on the support 11, detecting cable wire 12 two ends insulate by insulator and support 11, and the detection cable wire 12 of two detection parts passes through the lead parallel connection, and is electrically connected with testing circuit by lead.Please in conjunction with shown in Figure 3, above-mentioned testing circuit comprises a low-voltage dc power supply and the relay of a 24V, the two ends of low-voltage dc power supply link to each other with two leads that detect cable wire 12 respectively, relay comprises a coil J1 and a normally closed contact K1-1, coil J1 is connected on the lead that detects between cable wire 12 and low-voltage dc power supply one end, on the electric control loop that is connected on wire belt conveyer 1 of normally closed contact K1-1.When the steel wire 5 of belt conveyor 3 or return belt 4 is exposed when peeling off certain-length (more than the 500mm), invar silk 5 moves on a pair of detection cable wire 12 that touches its below simultaneously with belt, make this to detecting the same conducting of cable wire 12 similar switches, thereby make relay coil J1 get, normally closed contact K1-1 disconnects, thereby make the electric control loop dead electricity of travelling apron 1 also out of service immediately, then can detect steel wire 5 exposed peeling off taken place, in time arrange maintenance, thereby prevent that steel wire 5 and wheel shaft 2 from twining, and eliminated potential safety hazard.

But; because the steel wire 5 that peels off is detected in operational process; if the exposed steel wire 5 that peels off is shorter, and when shutting down, because of effect of inertia when detecting that steel wire 5 peels off; travelling apron 1 also will move several seconds; make steel wire 5 exfoliations leave like this and detect cable wire 12, make this be in open-circuit condition again, can make relay coil J1 once more detecting cable wire 12; normally closed contact K1-1 becomes closure state again from off-state, causes travelling apron 1 to continue operation.Therefore, this relay also comprises an open contact K1-2, open contact K1-2 one end links to each other with the lead that another detects cable wire 12, and the other end is connected with a reset switch K2, and the other end of reset switch K2 is connected to coil J1 and and detects between the cable wire 12, thereby constitute a self-locking circuit, when coil J1 gets when electric, open contact K1-2 closure detects cable wire 12 even steel wire 5 leaves, also can guarantee coil J1 keep electricity condition so that carry out the affirmation that steel wire 5 peels off detection signal.And reset switch K2 is used to peel off the control that resets after steel wire 5 maintenance, can make coil J1 dead electricity, normally closed contact K1-1 closed reduction, thus the continuation that realizes travelling apron 1 moves.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.

Claims (5)

1. a wire belt conveyer steel wire peels off detecting device, it is characterized in that:

This detecting device comprises support, detection part and testing circuit, two detection parts are located at the belt conveyor and the return belt below of travelling apron respectively, each detection part comprises two mutually insulateds and is located at detection cable wire on the support, detects cable wire and is electrically connected with testing circuit by lead respectively.

2. wire belt conveyer steel wire as claimed in claim 1 peels off detecting device, it is characterized in that:

Described testing circuit comprises a low-voltage dc power supply and a relay, the two ends of low-voltage dc power supply link to each other with two leads that detect cable wire respectively, relay pack vinculum circle and normally closed contact, coil is connected on the lead that detects between cable wire and low-voltage dc power supply one end, on the electric control loop that is connected on the wire belt conveyer of normally closed contact.

3. wire belt conveyer steel wire as claimed in claim 2 peels off detecting device, it is characterized in that:

Described relay also comprises an open contact, and open contact one end links to each other with the lead that another detects cable wire, and the other end is connected to coil and and detects between the cable wire.

4. wire belt conveyer steel wire as claimed in claim 3 peels off detecting device, it is characterized in that:

One end of described open contact also is connected with a reset switch, and the other end of reset switch is connected to coil and and detects between the cable wire.

5. wire belt conveyer steel wire as claimed in claim 1 peels off detecting device, it is characterized in that:

The detection cable wire of described two detection parts is in parallel by lead.

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