CN105270956A - System and method for monitoring elevator braking slippage and traction sheave slippage - Google Patents
System and method for monitoring elevator braking slippage and traction sheave slippage Download PDFInfo
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Abstract
A monitoring system for brake slippage and traction sheave slippage comprises a brake slippage detector, an elevator absolute position detector and a controller; the braking slippage detector detects the braking slippage from the moment when the elevator starts braking to the moment when the elevator stops running and transmits the detection result to the controller; the elevator absolute position detector detects the absolute positions of the elevator at the moment of starting braking and the moment of stopping running and transmits the detection result to the controller; the controller obtains the total slippage of the elevator car from the moment when the elevator starts braking to the moment when the elevator stops running according to the absolute positions of the moment when the elevator starts braking and the moment when the elevator stops running; the controller obtains the slippage of the traction sheave according to the braking slippage and the total slippage of the elevator car; the controller compares the braking slippage and the traction sheave slippage with pre-stored braking slippage and traction sheave slippage thresholds respectively, and judges whether to send a prompt signal and stop the elevator car from running.
Description
Technical field
The present invention relates to elevator car safety and run detection techniques field, especially relate to monitoring system and the monitoring method of a kind of elevator brake braking skid amount and traction sheave slippage.
Background technology
Now, in all high-rise buildings, nearly all there is the existence of elevator.Fig. 1 is the structural representation of elevator in prior art, as shown in Figure 1, elevator comprises lift car 11, rope 12, traction motor 13, track adjusting wheel 14, drg 15 and counterweight 16, traction motor 13 is provided with traction sheave 131, one end of rope 12 is connected on lift car 11, the other end is connected with counterweight 16 after walking around traction sheave 131 and track adjusting wheel 14, traction motor 13 drives traction sheave 131 to rotate, traction sheave 131 drives elevator motion by rope 12, drg 15 is positioned on traction motor 13, when the elevator is run, drg 15 does not contact with traction motor 13 under the effect of electromagnetic force, when elevator is out of service, electromagnetic force between traction motor 13 and drg 15 disappears, drg 15 can hold the brake wheel of traction motor 13 under the action of the spring tightly, thus elevator is braked.
But due to can Tension Difference be there is around the rope 12 of traction sheave 131 both sides, thus can produce certain slippage between rope 12 and traction sheave 131, i.e. traction sheave slippage.When the drg 15 of elevator holds the brake wheel of traction motor 13 tightly, between the brake wheel of drg 15 and traction motor 13, also can produce certain slippage, namely produce brake slippage.Due to the existence of traction sheave slippage and brake slippage, make the actual position of lift car 11 can produce a slippage equally relative to theoretical position, namely the total slippage of lift car, impacts the safety of lift car then.Existing Theoretical Design can ensure the safe operation of elevator, but the error that elevator often occurs in producing and installing or the impact being subject to environmental factor, such as: the elevator decoration because of the later stage changes the deadweight of lift car 11, thus causes the change of lift car 11 equilibrium factor; Or in installation process, the position angle of towing machine is unreasonable causes the phenomenons such as rope 12 skidding, all can cause brake slippage or traction sheave slippage excessive, elevator all can be made to have an accident.
Force for lift and traction are the important indicators of reaction elevator performance, brake slippage and traction slippage are crossed conference and are caused lift car 11 to rush to summit or squat the security risk at the end, and cause lift car 11 accidental movement and cause the high-order safety misadventure sheared.But in the prior art, also can realize the Real-Time Monitoring to brake slippage and traction sheave slippage without any elevator.
Summary of the invention
In view of this, the object of the present invention is to provide monitoring system and the monitoring method of a kind of elevator brake braking skid amount and traction sheave slippage, this monitoring system can carry out Real-Time Monitoring to elevator brake braking skid amount and traction sheave slippage, ensures that elevator normally runs.
The elevator brake braking skid amount that the embodiment of the present invention provides and the monitoring system of traction sheave slippage comprise brake slippage detector, elevator absolute location detector and controller;
This first result of detection, to the brake slippage signal in elevator moment out of service, and is passed to described controller by described brake slippage detector detection braking moment from elevator;
The elevator sedan absolute position signal in described elevator absolute location detector detection braking moment and elevator moment out of service from elevator, and this second result of detection is passed to controller;
Described controller draws brake slippage according to this first result of detection, and draws the total slippage of lift car according to this second result of detection;
Described controller draws traction sheave slippage according to this brake slippage and the total slippage of this lift car;
Whether this brake slippage and this traction sheave slippage compare with the threshold value of the threshold value and traction sheave slippage that are stored in advance in the brake slippage allowed in described controller by described controller respectively, and judge whether to send cue and stop elevator running according to comparative result.
Further, described brake slippage detector comprises pulse coder, and described controller draws this brake slippage according to the pulse count of this pulse coder from elevator between braking moment to elevator moment out of service.
Further, described elevator absolute location detector comprises absolute grating ruler, and the braking moment from elevator that described controller obtains according to this absolute grating ruler and the elevator sedan absolute position in elevator moment out of service draw the total slippage of this lift car.
Further, described traction sheave slippage equals the phasor difference of the total slippage of described lift car and described brake slippage.
Further, the threshold value of described brake slippage and the threshold value of described traction sheave slippage include secure threshold and danger threshold, when described controller compares, if described brake slippage be less than the secure threshold of described brake slippage and described traction sheave slippage is less than the secure threshold of described traction sheave slippage time, described controller does not send signal and elevator normally runs, if described brake slippage is greater than the danger threshold of described brake slippage or described traction sheave slippage when being greater than the danger threshold of described traction sheave slippage, described controller sends alerting signal and control elevator is out of service, if described brake slippage and described traction sheave slippage are all less than corresponding danger threshold, but when at least one of them is greater than corresponding secure threshold, described controller sends cue but elevator normally runs.
Further, described monitoring system also comprises read out instrument and warning device 60, and described read out instrument shows the signal kinds that described controller sends, and described warning device 60 gives the alarm when receiving the alerting signal that controller sends.
Present invention also offers the monitoring method of a kind of brake slippage and traction sheave slippage, described monitoring method comprises the steps:
This first result of detection, to the brake slippage signal in elevator moment out of service, and is passed to controller by brake slippage detector detection braking moment from elevator;
The elevator sedan absolute position signal in elevator absolute location detector detection braking moment and elevator moment out of service from elevator, and this second result of detection is passed to described controller;
Described controller draws brake slippage according to this first result of detection, and draws the total slippage of lift car according to this second result of detection;
Described controller draws traction sheave slippage according to described brake slippage and the total slippage of described lift car;
Described brake slippage and described traction sheave slippage compare with the threshold value of the threshold value and traction sheave slippage that are stored in advance in the brake slippage allowed in described controller by described controller, and judge whether send cue and whether stop elevator cage operation according to comparative result.
Further, described traction sheave slippage equals the phasor difference of the total slippage of described lift car and described brake slippage.
Further, the threshold value of described brake slippage and the threshold value of described traction sheave slippage include secure threshold and danger threshold, when described controller compares, if described brake slippage be less than the secure threshold of described brake slippage and described traction sheave slippage is less than the secure threshold of described traction sheave slippage time, described controller does not send cue and elevator normally runs, if described brake slippage is greater than the danger threshold of described brake slippage or described traction sheave slippage when being greater than the danger threshold of described traction sheave slippage, described controller sends alerting signal and control elevator is out of service, if described brake slippage and described traction sheave slippage are all less than corresponding danger threshold, but when at least one of them is greater than corresponding secure threshold, described controller sends cue but elevator normally runs.
Present invention also offers a kind of elevator, this elevator has the monitoring system of brake slippage described in above-mentioned any one and traction sheave slippage.
In sum, the monitoring system of elevator brake braking skid amount provided by the invention and traction sheave slippage can when elevator be braked at every turn, Real-Time Monitoring is carried out to brake slippage and traction sheave slippage, and send different signals according to the size of brake slippage and traction sheave slippage and stop elevator cage operation when lift car is in the hole, therefore, this monitoring system facilitates in-site installation personnel and the maintainer judgement to elevator brake braking skid amount and traction sheave slippage, guarantee the safety that elevator runs, slippage fault can be detected in time, the elevator safety misadventure caused out of control is avoided to occur, can judge whether on-the-spot elevator brake braking skid amount and traction sheave slippage meet designing requirement, prompting field staff adjusts the related accessory of brake slippage and traction sheave slippage in time, then ensure that elevator normally runs.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification sheets, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the structural representation of elevator in prior art.
Fig. 2 is the structured flowchart of the monitoring system of elevator brake braking skid amount and traction sheave slippage in figure.
Fig. 3 is the control logic figure of the monitoring system of elevator brake braking skid amount and traction sheave slippage in embodiments of the invention.
Detailed description of the invention
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, it is as follows that the present invention is described in detail.
The elevator of the monitoring system that the invention provides a kind of elevator brake braking skid amount and traction sheave slippage and the monitoring system with this elevator brake braking skid amount and traction sheave slippage, Fig. 2 is the structured flowchart of the monitoring system of elevator brake braking skid amount and traction sheave slippage in figure, as shown in Figure 2, this monitoring system comprises brake slippage detector 20, elevator absolute location detector 30, controller 40, read out instrument 50 and warning device 60.
This monitoring system can be opened as required or close, when this monitoring system is opened, brake slippage detector 20 detects braking moment from elevator, and (namely lift car moves to flat bed region in normal state, start flat bed retrosequence, and cut off the moment that main frame and main frame drg power) to the signal of the brake slippage (i.e. the slippage of drg when braking and between traction motor) in elevator moment out of service, and this first result of detection is passed to controller 40.Elevator absolute location detector 30 detects the signal of braking moment and elevator moment elevator sedan absolute position out of service from elevator, and this second result of detection is passed to controller 40.First controller 40 draws brake slippage according to the first result of detection, and draw the total slippage of lift car according to the second result of detection, secondly traction sheave slippage (slippage namely between traction sheave and rope) is drawn according to drg slippage and the total slippage of lift car, because the total slippage of lift car is mainly subject to the impact of drg braking skid amount and traction sheave slippage, in the present embodiment, traction sheave slippage can equal the phasor difference of the total slippage of lift car and brake slippage; Finally, controller 40 by current brake slippage and traction sheave slippage respectively be stored in advance in the threshold value of brake slippage that allows in controller 40 and the threshold value of traction sheave slippage contrasts, and judge whether to send cue and whether stop elevator running according to comparing result.Read out instrument 50 can the signal kinds that sends of display control switch 40, and reminds maintainer to pay close attention to lift car, and warning device 60 can give the alarm according to signal kinds.
Further, the threshold value of above-mentioned brake slippage and the threshold value of traction sheave slippage include secure threshold and danger threshold.When controller 40 is compared, if current brake slippage is less than the secure threshold of brake slippage and current traction sheave slippage is less than the secure threshold of traction sheave slippage, then illustrate that now brake slippage and traction sheave slippage are all less, lift car is in safe operation state, and controller 40 does not send signal and lift car can normally run, if current brake slippage is greater than its danger threshold or current traction sheave slippage is greater than its danger threshold, one of them of now brake slippage or traction sheave slippage is described or all numerical value is all larger, in the hole, now elevator is comparatively dangerous, controller 40 give the alarm signal remind maintainer elevator is keeped in repair, and it is out of service to control elevator, read out instrument 50 shows current brake device braking skid amount and traction sheave slippage, and warning device 60 gives the alarm, if current brake slippage and current traction sheave slippage are all less than the danger threshold of its correspondence, but at least one of them is greater than corresponding secure threshold, although illustrate that the numerical value of now brake slippage or traction sheave slippage is larger, but be still in controlled range, now elevator is in a safe condition, but there is the possibility that security risk increases, controller 40 sends cue, maintainer is reminded to pay close attention to lift car, but lift car still normally runs, read out instrument 50 shows brake slippage, but warning device 60 does not give the alarm.
Further, in the present embodiment, brake slippage detector 20 can be pulse coder, and pulse coder can be positioned on traction motor, and controller 40 draws brake slippage according to the pulse count between braking moment from elevator to elevator moment out of service; Elevator absolute location detector 30 can be absolute grating ruler, and absolute grating ruler can be arranged on the sidewall of elevator, and the absolute location that controller 40 starts braking moment and elevator moment out of service lift car according to elevator draws the total slippage of lift car.
The embodiment of the present invention additionally provides the monitoring method of a kind of elevator brake braking skid amount and traction sheave slippage, whether the operation for Real-Time Monitoring lift car is normal safely, Fig. 3 is the logical diagram of the monitoring method of elevator brake braking skid amount and traction sheave slippage in embodiments of the invention, as shown in Figure 3, this monitoring method comprises the steps:
Brake slippage detector 20 to detect from elevator braking moment to the brake slippage in elevator moment out of service, and this first result of detection is passed to controller 40, in the present embodiment, brake slippage detector 20 can be pulse coder, this pulse count, to the pulse count in elevator moment out of service, and is passed to controller 40 by pulse coder real time recording braking moment from elevator;
Elevator absolute location detector 30 detects the absolute location of braking moment and elevator moment lift car out of service from elevator, and this second result of detection is passed to controller 40, in the present embodiment, elevator absolute location detector 30 can be absolute grating ruler, absolute grating ruler real time recording elevator starts the absolute location of braking moment and elevator moment lift car out of service, and this absolute location is passed to controller 40;
Controller 40 draws brake slippage according to the first result of detection, and draw the total slippage of lift car according to the second result of detection, in the present embodiment, controller 40 draws brake slippage according to the pulse count between braking moment from elevator to elevator moment out of service, and the absolute location starting braking moment and elevator moment out of service lift car according to elevator draws the total slippage of lift car;
Controller 40 draws traction sheave slippage according to brake slippage and the total slippage of lift car, and in the present embodiment, traction sheave slippage equals the phasor difference of the total slippage of lift car and brake slippage;
Controller 40 by current brake slippage and current traction sheave slippage respectively be stored in advance in the threshold value of brake slippage that allows in controller 40 and the threshold value of traction sheave slippage contrasts, and judge whether to send cue or whether stop elevator running according to comparing result.
Further, the threshold value of brake slippage and the threshold value of traction sheave slippage include secure threshold and danger threshold.When utilizing controller 40 to contrast, if current brake slippage and current traction sheave slippage are all less than the secure threshold of its correspondence, controller 40 does not send signal, and elevator normally runs; If current brake slippage and current traction sheave slippage are all greater than the danger threshold of its correspondence, controller 40 sends alerting signal, and it is out of service to control elevator; If current brake slippage and current traction sheave slippage are all less than its each self-corresponding danger threshold, but have a secure threshold being greater than its correspondence at least, control motor and send cue, but elevator normally run.
Installation personnel and maintainer can carry out different work according to different types of signal to elevator.
Present invention also offers a kind of elevator with the monitoring system of above-mentioned brake slippage and traction sheave slippage, about other technical characteristic of this elevator, refer to prior art, do not repeat them here.
In sum, the monitoring system of elevator brake braking skid amount provided by the invention and traction sheave slippage can when elevator be braked at every turn, Real-Time Monitoring is carried out to brake slippage and traction sheave slippage, and send different signals according to the size of brake slippage and traction sheave slippage and stop elevator cage operation when lift car is in the hole, therefore, this monitoring system facilitates in-site installation personnel and the maintainer judgement to elevator brake braking skid amount and traction sheave slippage, guarantee the safety that elevator runs, slippage fault can be detected in time, the elevator safety misadventure caused out of control is avoided to occur, can judge whether on-the-spot elevator brake braking skid amount and traction sheave slippage meet designing requirement, prompting field staff adjusts the related accessory of brake slippage and traction sheave slippage in time, then ensure that elevator normally runs.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a monitoring system for elevator brake braking skid amount and traction sheave slippage, is characterized in that: described monitoring system comprises brake slippage detector (20), elevator absolute location detector (30) and controller (40);
This first result of detection, to the brake slippage signal in elevator moment out of service, and is passed to described controller (40) by described brake slippage detector (20) detection braking moment from elevator;
The elevator sedan absolute position signal in described elevator absolute location detector (30) detection braking moment and elevator moment out of service from elevator, and this second result of detection is passed to controller (40);
Described controller (40) draws brake slippage according to this first result of detection, and draws the total slippage of lift car according to this second result of detection;
Described controller (40) draws traction sheave slippage according to this brake slippage and the total slippage of this lift car;
Described controller (40) by this brake slippage and this traction sheave slippage respectively be stored in advance in the threshold value of brake slippage that allows in described controller (40) and the threshold value of traction sheave slippage compares, and judge whether to send cue and whether stop elevator running according to comparative result.
2. the monitoring system of elevator brake braking skid amount according to claim 1 and traction sheave slippage, it is characterized in that: described brake slippage detector (20) comprises pulse coder, described controller (40) draws this brake slippage according to the pulse count of this pulse coder from elevator between braking moment to elevator moment out of service.
3. the monitoring system of elevator brake braking skid amount according to claim 1 and traction sheave slippage, it is characterized in that: described elevator absolute location detector (30) comprises absolute grating ruler, the braking moment from elevator that described controller (40) obtains according to this absolute grating ruler and the elevator sedan absolute position in elevator moment out of service draw the total slippage of this lift car.
4. the monitoring system of elevator brake braking skid amount according to claim 1 and traction sheave slippage, is characterized in that: described traction sheave slippage equals the phasor difference of the total slippage of described lift car and described brake slippage.
5. the monitoring system of elevator brake braking skid amount according to claim 1 and traction sheave slippage, it is characterized in that: the threshold value of described brake slippage and the threshold value of described traction sheave slippage include secure threshold and danger threshold, when described controller (40) compares, if described brake slippage be less than the secure threshold of described brake slippage and described traction sheave slippage is less than the secure threshold of described traction sheave slippage time, described controller (40) does not send signal and elevator normally runs, if described brake slippage is greater than the danger threshold of described brake slippage or described traction sheave slippage when being greater than the danger threshold of described traction sheave slippage, described controller (40) sends alerting signal and control elevator is out of service, if described brake slippage and described traction sheave slippage are all less than corresponding danger threshold, but when at least one of them is greater than corresponding secure threshold, described controller (40) sends cue but elevator normally runs.
6. the monitoring system of elevator brake braking skid amount according to claim 5 and traction sheave slippage, it is characterized in that: described monitoring system also comprises read out instrument (50) and warning device (60) 60, described read out instrument (50) shows the signal kinds that described controller (40) sends, and described warning device (60) 60 gives the alarm when receiving the alerting signal that controller (40) sends.
7. a monitoring method for elevator brake slippage and traction sheave slippage, is characterized in that, comprises the steps:
This first result of detection, to the brake slippage signal in elevator moment out of service, and is passed to controller (40) by brake slippage detector (20) detection braking moment from elevator;
The elevator sedan absolute position signal in elevator absolute location detector (30) detection braking moment and elevator moment out of service from elevator, and this second result of detection is passed to described controller (40);
Described controller (40) draws brake slippage according to this first result of detection, and draws the total slippage of lift car according to this second result of detection;
Described controller (40) draws traction sheave slippage according to described brake slippage and the total slippage of described lift car;
Described controller (40) by described brake slippage and described traction sheave slippage be stored in advance in the threshold value of brake slippage that allows in described controller (40) and the threshold value of traction sheave slippage compares, and judge whether send cue and whether stop elevator cage operation according to comparative result.
8. the monitoring method of brake slippage according to claim 7 and traction sheave slippage, is characterized in that: described traction sheave slippage equals the phasor difference of the total slippage of described lift car and described brake slippage.
9. the monitoring method of brake slippage according to claim 7 and traction sheave slippage, it is characterized in that: the threshold value of described brake slippage and the threshold value of described traction sheave slippage include secure threshold and danger threshold, when described controller (40) compares, if described brake slippage be less than the secure threshold of described brake slippage and described traction sheave slippage is less than the secure threshold of described traction sheave slippage time, described controller (40) does not send cue and elevator normally runs, if described brake slippage is greater than the danger threshold of described brake slippage or described traction sheave slippage when being greater than the danger threshold of described traction sheave slippage, described controller (40) sends alerting signal and control elevator is out of service, if described brake slippage and described traction sheave slippage are all less than corresponding danger threshold, but when at least one of them is greater than corresponding secure threshold, described controller (40) sends cue but elevator normally runs.
10. an elevator, is characterized in that: comprise the monitoring system as the elevator brake braking skid amount in claim 1 to 6 as described in any one and traction sheave slippage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510851473.7A CN105270956B (en) | 2015-11-30 | 2015-11-30 | System and method for monitoring elevator braking slippage and traction sheave slippage |
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| CN201510851473.7A CN105270956B (en) | 2015-11-30 | 2015-11-30 | System and method for monitoring elevator braking slippage and traction sheave slippage |
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| CN105270956A true CN105270956A (en) | 2016-01-27 |
| CN105270956B CN105270956B (en) | 2017-06-23 |
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| CN112173907A (en) * | 2019-07-03 | 2021-01-05 | 奥的斯电梯公司 | Brake deceleration measurement for elevator system |
| CN115028039A (en) * | 2022-06-15 | 2022-09-09 | 永大电梯设备（中国）有限公司 | Detection method of elevator traction device |
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| CN105270956B (en) | 2017-06-23 |
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Application publication date: 20160127 Assignee: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY DEVELOPMENT Co.,Ltd. WEINAN BRANCH Assignor: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Contract record no.: X2023980042749 Denomination of invention: Monitoring system and method for elevator brake slip and traction wheel slip Granted publication date: 20170623 License type: Common License Record date: 20231008 Application publication date: 20160127 Assignee: Zoomlion Construction Crane Co.,Ltd. Assignor: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Contract record no.: X2023980042704 Denomination of invention: Monitoring system and method for elevator brake slip and traction wheel slip Granted publication date: 20170623 License type: Common License Record date: 20231008 |