CN216549150U - Traction system with broken wire detection device - Google Patents
Traction system with broken wire detection device Download PDFInfo
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- CN216549150U CN216549150U CN202122910955.9U CN202122910955U CN216549150U CN 216549150 U CN216549150 U CN 216549150U CN 202122910955 U CN202122910955 U CN 202122910955U CN 216549150 U CN216549150 U CN 216549150U
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- open relay
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Abstract
The utility model provides a traction system with a broken wire detection device, which aims to solve the problems that: how to realize the problem of wire breakage on line. The key points of the utility model are as follows: the traction device comprises a traction wheel, a traction steel belt, a rope head combination, a normally open relay and a power supply thereof, wherein two ends of a coil of the normally open relay are respectively connected to the positive electrode and the rope head of the power supply, the negative electrode of the power supply is grounded, and a normally open contact of the normally open relay is used as a switch of an alarm circuit. The utility model has the positive effects that: the device realizes the on-line detection of whether the wire breaking phenomenon exists in the traction system, and eliminates the potential safety hazard existing in the traction system.
Description
Technical Field
The utility model relates to a traction system, in particular to a traction system with a broken wire detection device.
Background
The traction system of the elevator and the crane comprises a traction wheel, a traction steel belt and a rope head combination, wherein the traction steel belt is formed by packaging a plurality of parallel steel wire ropes in a plastic coating layer, the steel wire ropes are made of conductive materials, the plastic coating layer is made of insulating materials, the rope head combination comprises rope heads exposed out of the plastic coating layer, each steel wire rope is provided with one rope head, and if the four steel wire ropes are packaged in the plastic coating layer, the four rope heads are combined on the rope heads. The dragging steel belt can have fatigue and wire breakage in the using process, if the dragging steel belt is not used in time, strand breakage can occur when the dragging steel belt is continuously used, hidden danger is brought to personal safety, and therefore whether the dragging steel belt has the wire breakage or not needs to be detected in time. At present, a method for detecting whether strand breakage exists in a traction steel belt is to connect adjacent rope ends of a rope end combination by using a conducting wire to realize series connection of steel wire ropes, apply detection voltage and determine whether strand breakage exists in the detected steel wire ropes according to connection and disconnection. The method has the defects that: firstly, the cost is high; secondly, the detection process is cumbersome.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide a traction system with a broken wire detection device.
The purpose of the utility model is realized as follows: the traction device comprises a traction wheel, a traction steel belt and a rope head combination, wherein the rope head combination comprises a rope head and is characterized in that: the alarm circuit also comprises a normally open relay and a power supply thereof, wherein two ends of a coil of the normally open relay are respectively connected to the positive pole and the rope head of the power supply, the negative pole of the power supply is grounded, and a normally open contact of the normally open relay is used as a switch of the alarm circuit.
When the traction steel belt is not broken, the traction steel belt is insulated, the circuit is disconnected, and the normally open relay is not electrified and does not act; when the dragging steel belt is broken, the broken wire can be pricked out of the coating layer of the dragging steel belt, the insulation of the dragging steel belt is damaged, when the broken wire passes through the dragging wheel, the wire is grounded to form a loop, the circuit is connected, the normally open relay coil is electrified, the normally open contact acts (is closed), the alarm circuit is connected, and an alarm signal is sent.
Compared with the prior art, the utility model has the following positive effects: the device realizes the on-line detection of whether the wire breaking phenomenon exists in the traction system, and eliminates the potential safety hazard existing in the traction system.
Drawings
The utility model will be further described below by taking an example of its application to an elevator traction system.
FIG. 1 is a schematic of the present invention.
Fig. 2 is an electrical schematic of fig. 1.
Fig. 3 is a schematic view of an elevator traction system using more than two traction sheaves according to the present invention.
Detailed Description
Referring to fig. 1, the elevator traction system includes a car 1, a guide pulley 2, a rope hitch 3, a wire 4, a detecting device 5, a traction sheave 6, a traction steel belt 7, and a counterweight 8. Referring to fig. 2, the detection device 5 includes a normally open relay 52 and a power supply 51 thereof, the traction steel belt 7 is formed by packaging four parallel steel wire ropes in a plastic coating layer 71, the rope end combination 3 includes four rope ends 31, the four rope ends are all connected to one end of a normally open relay coil, the other end of the normally open relay coil is connected to a power supply anode, a power supply cathode is grounded, and a normally open contact of the normally open relay serves as a power switch of an alarm circuit (which belongs to the prior art and is omitted).
When the traction steel belt is not broken, the traction steel belt is insulated, the circuit is disconnected, and the normally open relay is not electrified and does not act; when the broken wire 10 appears on the traction steel belt, the broken wire can be pricked out of the coating layer of the traction steel belt, the insulation of the traction steel belt is damaged, when the broken wire passes through the traction sheave, the wire is grounded to form a loop, the circuit is connected, the normally open relay coil is electrified, the normally open contact acts (is closed), the alarm circuit is connected, and an alarm signal is sent.
More than two traction wheels are adopted in the elevator traction system, as shown in fig. 3, namely, more than two traction wheels 6 are arranged on a traction wheel shaft 9, at the moment, corresponding traction steel belts and rope heads thereof are combined, and when three traction wheels are arranged, three traction steel belts and rope heads thereof are combined. When there are more than two rope end combinations, the rope end connection at one end of the normally open relay coil means that all the rope ends 31 in all the rope end combinations (traction steel belts) are connected to the end of the normally open relay coil 52 through one wire 4.
Claims (2)
1. The utility model provides a take broken silk detection device's system of towing, it includes driving sheave, tows steel band and fag end combination, fag end combination includes fag end, characterized by: the alarm circuit also comprises a normally open relay and a power supply thereof, wherein two ends of a coil of the normally open relay are respectively connected to the positive pole and the rope head of the power supply, the negative pole of the power supply is grounded, and a normally open contact of the normally open relay is used as a switch of the alarm circuit.
2. The traction system with a wire breakage detecting device according to claim 1, characterized in that: when more than two rope ends are combined, the rope ends are connected to one end of the normally open relay coil, that is, all the rope ends in all the rope end combinations are connected to the end of the normally open relay coil through one conducting wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122910955.9U CN216549150U (en) | 2021-11-25 | 2021-11-25 | Traction system with broken wire detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122910955.9U CN216549150U (en) | 2021-11-25 | 2021-11-25 | Traction system with broken wire detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216549150U true CN216549150U (en) | 2022-05-17 |
Family
ID=81575740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122910955.9U Active CN216549150U (en) | 2021-11-25 | 2021-11-25 | Traction system with broken wire detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216549150U (en) |
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2021
- 2021-11-25 CN CN202122910955.9U patent/CN216549150U/en active Active
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