CN204038800U - Elevator traction steel band rope break detection device - Google Patents
Elevator traction steel band rope break detection device Download PDFInfo
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- CN204038800U CN204038800U CN201420450842.2U CN201420450842U CN204038800U CN 204038800 U CN204038800 U CN 204038800U CN 201420450842 U CN201420450842 U CN 201420450842U CN 204038800 U CN204038800 U CN 204038800U
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Abstract
The utility model relates to a kind of elevator traction steel band rope break detection device, comprises voltage signal source, and it is for applying the head end of a first voltage signal to every root steel rope of elevator traction steel band; Voltage signal collector, it is for the final voltage signal of the end of the every root steel rope of Real-time Collection; D and A converter, it is connected to voltage signal source and voltage signal collector respectively, is digital quantity for changing first voltage signal and the final voltage signal of every root steel rope; Comparator, it is for the size of the digital quantity of the final voltage signal of more every root steel rope and the percent value of digital quantity of first voltage signal and the threshold value of setting; Prompting device, it is connected to comparator, points out the coupled condition of described steel rope according to comparative result.The utility model is simple and reliable, fast response time, easy for installation, by the crack conditions of root steel rope every in diode displaying elevator traction steel band, solves the safety detection of elevator traction steel band and the problem of elevator later maintenance.
Description
Technical field
The present invention relates to elevator safety monitoring technical field, particularly a kind of elevator traction steel band rope break detection device.
Background technology
At present, commercially, 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 produce and sell.The personal injury number caused because fracture occurs elevator wire rope for many years has more than 50 people, and 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 by being observed visually steel rope, so do not judge the crack conditions of its inner wire rope by manual detection or the special testing tool of steel rope.Now in relevant wire cable rupture detection technique, have and be connected to by detecting the crack conditions that the displacement data of steel cord ends spring or stress data judge steel rope, this kind of method needs the higher displacement pickup of precision and pressure sensor, implement more loaded down with trivial details, and detection speed is also slow; Also have and trigger micro-switch by fine motion sheet and detect the crack conditions of steel rope, this kind of method is impracticable for the steel rope detecting traction steel band inside, because the steel rope of traction steel band can not expose, and installs cumbersome.This brings a lot of inconvenience just to elevator maintain and protection personnel, and even likely neglect the maintenance to traction steel band, its safety detection technique compares urgent need.
Summary of the invention
Object of the present invention, overcomes the deficiencies in the prior art exactly, provide a kind of can by the elevator traction steel band rope break detection device of every root steel rope on off mode of voltage detecting elevator traction steel band.
In order to achieve the above object, following technical scheme is adopted:
A kind of elevator traction steel band rope break detection device, comprise voltage signal source, it is for applying the head end of a first voltage signal to every root steel rope of elevator traction steel band; Every root steel rope of described elevator traction steel band and voltage signal source, load form loop; Voltage signal collector, it is for the final voltage signal of the end of the every root steel rope of Real-time Collection; D and A converter, it is connected to voltage signal source and voltage signal collector respectively, is digital quantity for changing first voltage signal and the final voltage signal of every root steel rope; Comparator, it for the size of the digital quantity of the final voltage signal of more every root steel rope and the percent value of digital quantity of first voltage signal and the threshold value of setting, and exports comparative result; Prompting device, it is connected to comparator, points out the coupled condition of described steel rope according to comparative result.
Further, also comprise a load, every root 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 comparator 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 warning lamp and elevator controlling mainboard respectively.
Compared with prior art, beneficial effect of the present invention is:
This detecting device is simple and reliable, fast response time, easy for installation, for the safety detection of elevator traction steel band and elevator later maintenance provide a kind of solution efficiently.By the crack conditions of root steel rope every in diode displaying elevator traction steel band, maintain easily replacing, accomplish Real-Time Monitoring.
Accompanying drawing explanation
Fig. 1 is the connection diagram of elevator traction steel band, elevator and detecting device;
Fig. 2 is the structured flowchart of elevator traction strip breakage detecting device shown in this enforcement;
Fig. 3 is elevator safety loop connection diagram;
Fig. 4 is the flow chart of steps of elevator traction strip breakage method of inspection shown in this enforcement;
Fig. 5 is the flow chart of steps of the method in monitoring voltage signal source shown in this enforcement.
Diagram: 1-elevator traction steel band;
2-detecting device; 21-voltage signal source; 22-voltage signal collector; 23-D and A converter; 24-comparator; 25-prompting device.
3-cable;
41-safety relay; 42-warning lamp; 43-elevator safety loop; 44-elevator controlling 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 root steel rope of elevator traction steel band 1 and detecting device 2 form loop by cable 3.As shown in Figure 2, 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, comparator 24 and prompting device 25.
Voltage signal source 21 is for applying the head end of a first voltage signal to every root 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 exports the head end of 5V voltage to every root steel rope.
Voltage signal collector 22 is for the final voltage signal of the end of the every root steel rope of Real-time Collection.Under normal circumstances, even if consider pressure drop, the final voltage signal gathered at the end of every root steel rope can at below 5V, but can not be too low.
The D and A converter 23 of the present embodiment is connected to voltage signal source 21 and voltage signal collector 22 respectively, is digital quantity for changing first voltage signal and the final voltage signal of every root steel rope.By the analog signal collected is converted to digital signal.
Comparator 24 is for the size of the digital quantity of the final voltage signal of more every root steel rope and the percent value of digital quantity of first voltage signal and the threshold value of setting.After analog quantity being converted to digital quantity by D and A converter 23, just may be used for the comparison of numerical values recited.When 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 comparing, 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%.
Prompting device 25, it is connected to comparator 24, receives the comparative result of comparator 24, points out the coupled condition of described steel rope according to comparative result.When 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 comparator 24 exports high level to prompting device, and prompting device prompting steel rope is normal.When the percent value of the digital quantity of final voltage signal and the digital quantity of first voltage signal is less than threshold value, comparator 24 output low level, prompting device prompting steel rope may rupture.Prompting device sends alerting signal by the form such as sound, light.
The present embodiment also comprises a load, and every root steel rope of described elevator traction steel band and voltage signal source, load form loop.Load is preferably the light-emitting diode of connecting in loop.When after wire cable rupture, light-emitting diode is not luminous, and service personnel just can know the state of steel rope by naked eyes.
Comparator 24 is also connected to the coil of outside safety relay 41, continues to export the coil of comparison signal to outside safety relay 41.The contact of outside safety relay 41 is connected in elevator safety loop 43.The coil of outside safety relay 41 is "on" position when steel rope is in normal condition, keeps lift loop to connect, ensures the normal operation of elevator.When wire cable rupture, the coil of outside safety relay 41 is power failure states, namely keeps elevator safety loop to disconnect, and ensures that elevator can not run.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 43.Open contact prevents from relay contact from sticking together causing shielding.As shown in Figure 3, other 2 contacts are used for warning lamp 42 and control and carry an on-off model to elevator controlling mainboard 44, and such apparatus for controlling elevator can identify the service condition of elevator traction steel band.
As shown in Figure 4, a kind of elevator traction steel band disconnected rope method of inspection of the present embodiment comprises the following steps:
S10: voltage signal source applies the head end of a first voltage signal to every root steel rope of elevator traction steel band.
Voltage signal source applies a first voltage signal at the head end of every steel cable of elevator traction steel band.This first voltage signal is direct current 5V voltage signal.Normally work in order to ensure voltage signal source, also need the situation of the first voltage signal to voltage signal source and output thereof to monitor.As shown in Figure 5, the method in monitoring voltage signal source comprises the following steps S101-S103:
S101: the magnitude of voltage setting the output of described voltage signal source is standard digital amount.
Voltage signal source output voltage is a normal magnitude of voltage, is set as 5V.5V d. c. voltage signal is converted 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 detecting the head end of every root steel rope.
Because voltage signal source outputs voltage signal in the process of steel rope, bad contact etc. problem may be subject to, the actual value exporting the voltage of steel rope to can be detected by the first voltage signal of the head end detecting every root steel rope.
S103: judge whether described first voltage signal values is above standard a ratio value of digital quantity, and if so, voltage signal source exports normal; If not, the abnormal warning of voltage signal source is sent.
After the voltage signal at the elevator traction steel band top collected, first voltage signal values is compared with standard digital amount, when first voltage signal values exceedes a ratio value of this standard digital amount, judge that voltage signal source exports normal.When first voltage signal values is less than a ratio value of this standard digital amount, then there is the problems such as voltage signal source exception or bad contact, now send the abnormal warning of voltage signal source, this alarm signal is reported to the police by the approach such as audible alarm or light warning.Ratio value can be that limit value can set according to actual conditions, is preferably 50%.Ratio value can also elect the scopes such as 50%-90% as.
S20: the final voltage signal of the end of the every root steel rope of Real-time Collection.
Because every root steel rope of elevator traction steel band all forms loop with voltage signal source, load.Can the voltage data reference value of the every root steel rope of Real-time Obtaining by the final voltage signal gathering the end of every root steel rope.
S30: first voltage signal and the final voltage signal of changing every root steel rope are digital quantity.
According to getting, every root steel rope begins, terminal voltage signal becomes digital quantity by the A/D module converts of Programmable Logic Controller.
S40: the percent value calculating the digital quantity of the final voltage signal of every root steel rope and the digital quantity of first voltage signal.
S50: judge whether described percent value exceedes default threshold value, if so, corresponding steel rope normally connects; If not, wire cable rupture.
The percent value whether the final voltage signal digital quantity collected according to the end of every root steel rope exceedes first voltage signal digital quantity is carried out calculating and is judged whether every root steel rope ruptures.Described percent value, when wire cable rupture, should be 0%, burr can occur about 50%, likely occurs the trend ruptured.Set this percent value according to the situation of reality and can estimate different situation generations.
Result of calculation can control 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 when steel rope is in normal condition, keeps lift loop to connect, ensures the normal operation of elevator.When wire cable rupture, outside safety relay coils is power failure state, namely keeps elevator safety loop to disconnect, and ensures that elevator can not run.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 from relay contact from sticking together causing shielding.As shown in Figure 4, other 2 contacts are used for warning lamp and control and carry an on-off model to elevator controlling mainboard, and such apparatus for controlling elevator can identify the service condition of elevator traction steel band.
Above the technical scheme that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth the principle of the embodiment of the present invention and embodiment, the explanation of above embodiment is only applicable to the principle helping to understand the embodiment of the present invention; Meanwhile, for one of ordinary skill in the art, according to the embodiment of the present invention, detailed description of the invention and field of application all will change, and in sum, this description should not be construed as limitation of the present invention.
Claims (5)
1. 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 root steel rope of elevator traction steel band;
Voltage signal collector, it is for the final voltage signal of the end of the every root steel rope of Real-time Collection;
D and A converter, it is connected to voltage signal source and voltage signal collector respectively, is digital quantity for changing first voltage signal and the final voltage signal of every root steel rope;
Comparator, it for the size of the digital quantity of the final voltage signal of more every root steel rope and the percent value of digital quantity of first voltage signal and the threshold value of setting, and exports comparative result;
Prompting device, it is connected to comparator, points out the coupled condition of described steel rope according to comparative result.
2. elevator traction steel band rope break detection device according to claim 1, is characterized in that:
Also comprise a load, every root steel rope of described elevator traction steel band and voltage signal source, load form loop.
3. elevator traction steel band rope break detection device according to claim 2, is characterized in that:
Described load is the light-emitting diode of connecting in loop.
4. elevator traction steel band rope break detection device according to claim 1, is characterized in that:
Described percent value is 50%.
5. elevator traction steel band rope break detection device according to claim 1, it is characterized in that: described comparator 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 warning lamp and elevator controlling mainboard respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420450842.2U CN204038800U (en) | 2014-08-11 | 2014-08-11 | Elevator traction steel band rope break detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420450842.2U CN204038800U (en) | 2014-08-11 | 2014-08-11 | Elevator traction steel band rope break detection device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105060057A (en) * | 2015-09-14 | 2015-11-18 | 云南名家智能设备股份有限公司 | Steel strip detection device |
| CN106370699A (en) * | 2016-10-14 | 2017-02-01 | 江南嘉捷电梯股份有限公司 | Detection device for composite steel belt of elevator |
| CN107922153A (en) * | 2015-08-05 | 2018-04-17 | 三菱电机大楼技术服务株式会社 | Break detector apparatus |
| CN109230952A (en) * | 2018-09-30 | 2019-01-18 | 哈尔滨工业大学（深圳） | Elevator traction steel band tension and performance degradation monitoring method and system |
| CN110817653A (en) * | 2019-11-22 | 2020-02-21 | 合肥工业大学 | Detection method and detection system for inner core of steel belt |
-
2014
- 2014-08-11 CN CN201420450842.2U patent/CN204038800U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107922153A (en) * | 2015-08-05 | 2018-04-17 | 三菱电机大楼技术服务株式会社 | Break detector apparatus |
| CN107922153B (en) * | 2015-08-05 | 2019-07-19 | 三菱电机大楼技术服务株式会社 | Break detector apparatus |
| CN105060057A (en) * | 2015-09-14 | 2015-11-18 | 云南名家智能设备股份有限公司 | Steel strip detection device |
| CN106370699A (en) * | 2016-10-14 | 2017-02-01 | 江南嘉捷电梯股份有限公司 | Detection device for composite steel belt of elevator |
| CN109230952A (en) * | 2018-09-30 | 2019-01-18 | 哈尔滨工业大学（深圳） | Elevator traction steel band tension and performance degradation monitoring method and system |
| CN110817653A (en) * | 2019-11-22 | 2020-02-21 | 合肥工业大学 | Detection method and detection system for inner core of steel belt |
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