CN104150307A - Elevator dragging steel belt rope breaking detection method and device - Google Patents
Elevator dragging steel belt rope breaking detection method and device Download PDFInfo
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- CN104150307A CN104150307A CN201410392834.1A CN201410392834A CN104150307A CN 104150307 A CN104150307 A CN 104150307A CN 201410392834 A CN201410392834 A CN 201410392834A CN 104150307 A CN104150307 A CN 104150307A
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Abstract
The invention relates to an elevator dragging steel belt rope breaking detection method and device. The method includes the steps of applying an initial voltage signal to the head end of each steel wire rope of an elevator dragging steel belt, collecting a tail voltage signal at the tail end of each steel wire rope in real time, converting the initial voltage signals and the tail voltage signals of the steel wire ropes into digital values, calculating a percentage value of the digital value of the tail voltage signal to the digital value of the initial voltage signal of each steel wire rope, judging whether the percentage values are larger than a preset threshold value or not, correspondingly considering that the steel wire ropes are normally connected if the percentage values are larger than the preset threshold value, and considering that the steel wire ropes are broken if the percentage values are not larger than the preset threshold value. The elevator dragging steel belt rope breaking detection method is simple and reliable, convenience is brought to installation, the response speed is higher, real-time monitoring is achieved, security detection on the elevator dragging steel belt and elevator later-period maintenance are achieved.
Description
Technical field
The present invention relates to elevator safety monitoring technical field, particularly a kind of elevator traction steel band disconnected rope method of inspection and detecting device.
Background technology
At present, on market, elevator traction steel band replaces ordinary steel rope transmission application in the carrying of the equipment such as elevator as a kind of new drive technology, has had multiple elevator manufacturing firm to produce and sell.More than the personal injury number causing due to elevator wire rope generation fracture for many years has 50 people, for the consideration of whole elevator safety, traction steel band has occupied the top priority as load-carrying element.
This kind of elevator traction steel band is structurally different from ordinary steel rope, because its steel rope part is wrapped by polyurethane, cannot be by being observed visually steel rope, so can not judge by manual detection or the special testing tool of steel rope the crack conditions of its inner wire rope.In now relevant wire cable rupture detection technique, there is the crack conditions that is connected to the displacement data of steel cord ends spring or stress data and judges steel rope by detection, this kind of method need to have displacement pickup and the pressure sensor that precision is higher, implement more loaded down with trivial details, and detection speed is also slow; Also have the crack conditions that detects steel rope by fine motion sheet triggering micro-switch, this kind of method is impracticable for the steel rope that detects traction steel band inside, because the steel rope of traction steel band can not expose, and installs cumbersome.This has brought a lot of inconvenience just to elevator maintain and protection personnel, even likely neglects the maintenance to traction steel band, and its safety detection technique is relatively badly in need of.
Summary of the invention
Object of the present invention, overcomes the deficiencies in the prior art exactly, and a kind of elevator traction steel band disconnected rope method of inspection and elevator traction steel band rope break detection device of the every steel rope on off mode that can pass through voltage detecting elevator traction steel band is provided.
In order to achieve the above object, adopt following technical scheme:
The disconnected rope of a kind of elevator traction steel band method of inspection, is characterized in that, comprises the following steps:
Detecting device applies the head end of a first voltage signal to every steel rope of elevator traction steel band;
The final voltage signal of the end of every steel rope of Real-time Collection;
First voltage signal and the final voltage signal of changing every steel rope are digital quantity;
Calculate the percent value of the digital quantity of final voltage signal and the digital quantity of first voltage signal of every steel rope;
Judge whether described percent value exceedes default threshold value, and if so, corresponding steel rope normally connects; If not, steel rope ruptures.
Further, also comprise a load, every steel rope of described elevator traction steel band and detecting device, load form loop.
Further, described load is the light-emitting diode of connecting in loop.
Further, described detecting device applies a first voltage signal to the head end of every steel rope of elevator traction steel band, further comprising the steps of:
The magnitude of voltage of setting described detecting device output is standard digital amount;
Detect the first voltage signal of the head end of every steel rope;
Judge whether a be above standard ratio value of digital quantity of described first voltage signal values, if so, detecting device output is normal; If not, send abnormal warning.
Further, describedly judge whether described percent value exceedes after default threshold value, further comprising the steps of:
If steel rope normally connects, the coil of controlling outside safety relay is "on" position;
If wire cable rupture, the coil of controlling outside safety relay is off-position;
2 open contact series connections of the safety relay of described outside are to elevator safety loop, and the safety relay coil of described outside is connected to Warning light, control Warning light and report to the police.
A kind of elevator traction steel band rope break detection device, comprising: voltage signal source, and it is for applying the head end of a first voltage signal to every steel rope of elevator traction steel band; Voltage signal collector, it is for the final voltage signal of the end of every steel rope of Real-time Collection; D and A converter, it is connected to respectively voltage signal source and voltage signal collector, is digital quantity for first voltage signal and the final voltage signal of changing every steel rope; Controller, the magnitude relationship of its digital quantity of final voltage signal for more every steel rope and the percent value of the digital quantity of first voltage signal and the threshold value of setting, points out the coupled condition of described steel rope according to comparative result.
Further, also comprise a load, every steel rope of described elevator traction steel band and voltage signal source, load form loop.
Further, described load is the light-emitting diode of connecting in loop.
Further, described percent value is 50%.
Further, described controller is connected to the coil of outside safety relay, the safety relay of described outside is provided with 4 contacts, wherein, have 2 open contacts at least, described 2 open contact series connections are to elevator safety loop, and other 2 contacts are connected to respectively warning lamp and elevator control mainboard.
Compared with prior art, beneficial effect of the present invention is:
This method of inspection and system are simple and reliable, and fast response time is easy for installation, for safety detection and the elevator later maintenance of elevator traction steel band provide a kind of efficient solution.By the crack conditions of every steel rope in diode displaying elevator traction steel band, maintain easily replacing, accomplish Real-Time Monitoring.
Brief description of the drawings
Fig. 1 is the connection diagram of elevator traction steel band and elevator;
Fig. 2 is the flow chart of steps of the steel band of elevator traction shown in this enforcement fracture method of inspection;
Fig. 3 is the flow chart of steps of the method in the source of monitoring voltage signal shown in this enforcement;
Fig. 4 is elevator safety loop schematic diagram;
Fig. 5 is the functional block diagram of the steel band of elevator traction shown in this enforcement break detector apparatus.
Diagram: 1-elevator traction steel band; 2-detecting device; 21-voltage signal source; 22-voltage signal collector; 23-D and A converter; 24-controller; 3-cable; 41-safety relay; 42-warning lamp; 43-elevator safety loop; 44-elevator control mainboard.
Detailed description of the invention
Describe the present invention in detail below in conjunction with accompanying drawing and specific implementation method, be used for explaining the present invention in exemplary embodiment and description of the present invention, but not as a limitation of the invention.
As shown in Figure 1, every steel rope of elevator traction steel band 1 is connected with detecting device 2, forms loop by cable 3.In loop, be connected on light-emitting diode in loop and indicate the break-make situation in this loop by setting.As shown in Figure 2, the disconnected rope of a kind of elevator traction steel band of the present embodiment method of inspection comprises the following steps:
S10: detecting device applies the head end of a first voltage signal to every steel rope of elevator traction steel band.
Detecting device applies a first voltage signal at the head end of every steel cable of elevator traction steel band.This head voltage signal is direct current 5V voltage signal.Normally work in order to ensure detecting device, also need the situation of the first voltage signal to detecting device and output thereof to monitor.As shown in Figure 3, the method for monitoring detecting device comprises the following steps S101-S103:
S101: the magnitude of voltage of setting described detecting device output is standard digital amount.
Detecting device output voltage is a normal magnitude of voltage, is set as 5V.Convert 5V d. c. voltage signal to standard digital amount by the A/D of Programmable Logic Controller.This standard figures amount is as standard figures.
S102: the first voltage signal that detects the head end of every steel rope.
Because detecting device outputs voltage signal in the process of steel rope, may be subject to bad contact etc. problem, the value of the actual voltage that exports steel rope to can be detected by detecting the first voltage signal of head end of every steel rope.
S103: judge whether a be above standard ratio value of digital quantity of described first voltage signal values, if so, detecting device output is normal; If not, send abnormal warning.
When after the voltage signal at the elevator traction steel band top collecting, by first voltage signal values and the comparison of standard digital amount, in the time that first voltage signal values exceedes a ratio value of this standard digital amount, judge that voltage signal source output is normal.When first voltage signal values is less than a ratio value of this standard digital amount, there is the problems such as the abnormal or bad contact of voltage signal source, now send voltage signal source extremely to warn, this alarm signal is reported to the police by approach such as audible alarm or light warnings.Ratio value can be that limit value can be set according to actual conditions, for example 50% or other ratio value.
S20: the final voltage signal of the end of every steel rope of Real-time Collection.
Because every steel rope of elevator traction steel band all forms loop with voltage signal source, load.By gathering the voltage data reference value that the final voltage signal of end of every steel rope can every steel rope of Real-time Obtaining.
S30: first voltage signal and the final voltage signal of changing every steel rope are digital quantity.
According to getting, every steel rope begins, terminal voltage signal becomes digital quantity by the A/D module converts of Programmable Logic Controller.
S40: the percent value of calculating the digital quantity of final voltage signal and the digital quantity of first voltage signal of every steel rope.
S50: judge whether described percent value exceedes default threshold value, and if so, corresponding steel rope normally connects; If not, wire cable rupture.
Whether the final voltage signal digital quantity collecting according to the end of every steel rope exceedes the percent value of first voltage signal digital quantity is calculated to judge whether every steel rope ruptures.Described percent value, the in the situation that of wire cable rupture, should be 0%, in 50% left and right, burr can occur, and likely occurs the trend of fracture.Set this percent value according to actual situation and can estimate different situation generations.
Result of calculation can be controlled the coil of outside safety relay and lock its state, and outside safety relay contact is connected in the safety return circuit of elevator.The coil of outside safety relay is "on" position at steel rope during in normal condition, keeps lift loop to connect, and ensures the normal operation of elevator.In the time of wire cable rupture, outside safety relay coil is power failure state, keeps elevator safety loop to disconnect, and ensures that elevator can not move.Outside safety relay has 4 contact switch amounts, and has 2 open contacts at least; Wherein 2 open contacts are connected mutually and are connected in elevator safety loop.Open contact prevents that relay contact from sticking together to be caused shielding.As shown in Figure 4, other 2 contacts are for warning lamp control and carry a switching value signal to elevator control mainboard, and apparatus for controlling elevator can be identified the service condition of elevator traction steel band like this.
As shown in Figure 5, a kind of elevator traction steel band rope break detection device of the present embodiment comprises voltage signal source 21, voltage signal collector 22, D and A converter 23 and controller 24.
Voltage signal source 21 is for applying the head end of a first voltage signal to every steel rope of elevator traction steel band.Voltage signal source output voltage is a normal magnitude of voltage, is set as 5V.Voltage signal source output 5V voltage is to the head end of every steel rope.
Voltage signal collector 22 is for the final voltage signal of the end of every steel rope of Real-time Collection.Under normal circumstances, even if consider pressure drop, the final voltage signal gathering at the end of every steel rope can be below 5V, but can be too not low.
The D and A converter 23 of the present embodiment is connected to respectively voltage signal source and voltage signal collector, is digital quantity for first voltage signal and the final voltage signal of changing every steel rope.By the analog signal collecting is converted to digital signal.
Controller 24 is for the digital quantity of final voltage signal of more every steel rope and the magnitude relationship of the percent value of the digital quantity of first voltage signal and the threshold value of setting.By D and A converter, analog quantity is converted to after digital quantity, just can be for the comparison of numerical values recited.In the time that the digital quantity of final voltage signal is 4.5V, the percent value of the digital quantity of final voltage signal and the digital quantity of first voltage signal is 4.5/5*100%=90%, and setting threshold is 50%.By relatively, can learn that the percent value 90% of the digital quantity of final voltage signal and the digital quantity of first voltage signal is greater than 50%.Controller is pointed out the coupled condition of described steel rope according to comparative result.In the time that the percent value of the digital quantity of final voltage signal and the digital quantity of first voltage signal is greater than threshold value, the state of steel rope is normal, and in the time that the percent value of the digital quantity of final voltage signal and the digital quantity of first voltage signal is less than threshold value, steel rope may rupture.Send alerting signal by the form such as sound, light.
Controller 24 is also connected to the coil of outside safety relay 41, continues the coil of output comparison signal to outside safety relay.The contact of outside safety relay 41 is connected in the safety return circuit 43 of elevator.The coil of outside safety relay is "on" position at steel rope during in normal condition, keeps elevator safety loop to connect, and ensures the normal operation of elevator.In the time of wire cable rupture, the coil of outside safety relay 41 is power failure states, keeps elevator safety loop to disconnect, and ensures that elevator can not move.Outside safety relay has 4 contact switch amounts, and has 2 open contacts at least; Wherein 2 open contacts are connected mutually and are connected in elevator safety loop.Open contact prevents that relay contact from sticking together to be caused shielding.As shown in Figure 4, other 2 contacts are controlled and carry a switching value signal to elevator control mainboard 44 for warning lamp 42, and apparatus for controlling elevator can be identified the service condition of elevator traction steel band like this.
Preferably, every steel rope of elevator traction steel band and voltage signal source, load form loop.Described load is the light-emitting diode of connecting in loop.Just can find out the state of steel rope by light emitting diode, utilize naked eyes just can know the state of all steel ropes in elevator traction steel band, arrive the object of simple-to-maintain.
The technical scheme above embodiment of the present invention being provided is described in detail, applied principle and the embodiment of specific case to the embodiment of the present invention herein and set forth, the explanation of above embodiment is only applicable to help to understand the principle of the embodiment of the present invention; , for one of ordinary skill in the art, according to the embodiment of the present invention, on detailed description of the invention and field of application, all will change, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (10)
1. the disconnected rope of an elevator traction steel band method of inspection, is characterized in that, comprises the following steps:
Detecting device applies the head end of a first voltage signal to every steel rope of elevator traction steel band;
The final voltage signal of the end of every steel rope of Real-time Collection;
First voltage signal and the final voltage signal of changing every steel rope are digital quantity;
Calculate the percent value of the digital quantity of final voltage signal and the digital quantity of first voltage signal of every steel rope;
Judge whether described percent value exceedes default threshold value, and if so, corresponding steel rope normally connects; If not, steel rope ruptures.
2. the disconnected rope of elevator traction steel band according to claim 1 method of inspection, is characterized in that: also comprise a load, every steel rope of described elevator traction steel band and detecting device, load formation loop.
3. the disconnected rope of elevator traction steel band according to claim 2 method of inspection, is characterized in that: described load is the light-emitting diode of connecting in loop.
4. the disconnected rope of elevator traction steel band according to claim 1 method of inspection, is characterized in that, described detecting device applies a first voltage signal to the head end of every steel rope of elevator traction steel band, further comprising the steps of:
The magnitude of voltage of setting described detecting device output is standard digital amount;
Detect the first voltage signal of the head end of every steel rope;
Judge whether a be above standard ratio value of digital quantity of described first voltage signal values, if so, detecting device output is normal; If not, send abnormal warning.
5. the disconnected rope of elevator traction steel band according to claim 1 method of inspection, is characterized in that, describedly judges whether described percent value exceedes after default threshold value, further comprising the steps of:
If steel rope normally connects, the coil of controlling outside safety relay is "on" position;
If wire cable rupture, the coil of controlling outside safety relay is off-position;
2 open contact series connections of the safety relay of described outside are to elevator safety loop, and the safety relay coil of described outside is connected to Warning light, control Warning light and report to the police.
6. an elevator traction steel band rope break detection device, is characterized in that, comprising:
Voltage signal source, it is for applying the head end of a first voltage signal to every steel rope of elevator traction steel band;
Voltage signal collector, it is for the final voltage signal of the end of every steel rope of Real-time Collection;
D and A converter, it is connected to respectively voltage signal source and voltage signal collector, is digital quantity for first voltage signal and the final voltage signal of changing every steel rope;
Controller, the magnitude relationship of its digital quantity of final voltage signal for more every steel rope and the percent value of the digital quantity of first voltage signal and the threshold value of setting, points out the coupled condition of described steel rope according to comparative result.
7. elevator traction steel band rope break detection device according to claim 6, is characterized in that:
Also comprise a load, every steel rope of described elevator traction steel band and voltage signal source, load form loop.
8. elevator traction steel band rope break detection device according to claim 7, is characterized in that: described load is the light-emitting diode of connecting in loop.
9. elevator traction steel band rope break detection device according to claim 6, is characterized in that:
Described percent value is 50%.
10. elevator traction steel band rope break detection device according to claim 6, it is characterized in that: described controller is connected to the coil of outside safety relay, the safety relay of described outside is provided with 4 contacts, wherein, have 2 open contacts at least, described 2 open contact series connections are to elevator safety loop, and other 2 contacts are connected to respectively warning lamp and elevator control mainboard.
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| CN201410392834.1A CN104150307A (en) | 2014-08-11 | 2014-08-11 | Elevator dragging steel belt rope breaking detection method and device |
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| CN201410392834.1A CN104150307A (en) | 2014-08-11 | 2014-08-11 | Elevator dragging steel belt rope breaking detection method and device |
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Cited By (5)
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| CN104949834A (en) * | 2015-06-11 | 2015-09-30 | 广州广日电梯工业有限公司 | Traction steel belt test method and traction steel belt test device for simulating elevator running |
| CN110482354A (en) * | 2019-09-10 | 2019-11-22 | 广州广日电梯工业有限公司 | A kind of elevator wire rope life detecting device and method |
| CN110626902A (en) * | 2019-09-29 | 2019-12-31 | 北京房地天宇特种设备安装工程有限公司 | Elevator safety installation detection method and electronic equipment thereof |
| CN111606169A (en) * | 2020-05-06 | 2020-09-01 | 西人马（厦门）科技有限公司 | Method, device and system for detecting faults of traction ropes of elevator car |
| CN111776916A (en) * | 2020-07-28 | 2020-10-16 | 江门市蒙德电气股份有限公司 | Method and device for detecting strand breakage of elevator traction steel belt |
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| CN104949834A (en) * | 2015-06-11 | 2015-09-30 | 广州广日电梯工业有限公司 | Traction steel belt test method and traction steel belt test device for simulating elevator running |
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| CN111776916A (en) * | 2020-07-28 | 2020-10-16 | 江门市蒙德电气股份有限公司 | Method and device for detecting strand breakage of elevator traction steel belt |
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