CN111056391A - Elevator running condition analyzing and judging method - Google Patents
Elevator running condition analyzing and judging method Download PDFInfo
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- CN111056391A CN111056391A CN201911170456.1A CN201911170456A CN111056391A CN 111056391 A CN111056391 A CN 111056391A CN 201911170456 A CN201911170456 A CN 201911170456A CN 111056391 A CN111056391 A CN 111056391A
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- car
- judging method
- condition analyzing
- elevator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The application relates to an elevator running condition analyzing and judging method. The application discloses an elevator operation condition analyzing and judging method, which comprises the following steps: a first signal end is arranged on the lift car, a second signal end is arranged on the counterweight block, and the first signal end and the second signal end can interact with each other through signals; comparing a car reference height H with a car test height H when the first signal end and the second signal end generate signal interaction; when H is equal to H, if the car reference operation time length Tm and the car test operation time length Tm satisfy the relationship: and Tm is not equal to Tm, judging that the car slips. The elevator running condition analyzing and judging method has the advantage of high judging accuracy.
Description
Technical Field
The application relates to an analysis method, in particular to an elevator running condition analysis and judgment method.
Background
The existing elevator operation condition analysis method, especially the elevator slipping judgment, obtains the total number of the main machine rotating pulses in the process that the elevator runs from the bottom layer to the top layer through the elevator in the constant-speed operation, compares the total number of the main machine rotating pulses with the total number of the main machine rotating pulses in the process that the elevator runs from the bottom layer to the top layer at the rated speed, and can judge the elevator slipping if the total number of the pulses in the constant-speed operation is inconsistent with the total number of the pulses in the rated speed operation. Wherein, the host computer rotation pulse is obtained through the pulse of the encoder connected on the host computer.
There are many reasons for the inconsistency of the total number of pulses that result in low and high speed operation, including slippage, wire rope elongation, lack of precision in the rotary encoder of the main machine, poor leveling precision when the elevator is moving at high speed, etc. Therefore, the judgment and analysis method of the prior art can lead to inaccurate analysis results.
Disclosure of Invention
Based on this, the present application aims to provide an elevator operation condition analysis and judgment method which has the advantage of high accuracy in judgment of elevator operation conditions.
An elevator operation condition analyzing and judging method comprises the following steps:
a first signal end is arranged on the lift car, a second signal end is arranged on the counterweight block, and the first signal end and the second signal end can interact with each other through signals;
comparing a car reference height H with a car test height H when the first signal end and the second signal end generate signal interaction;
when H is equal to H, if the car reference operation time length Tm and the car test operation time length Tm satisfy the relationship: and Tm is not equal to Tm, judging that the car slips.
According to the method for analyzing and judging the running condition of the elevator, when the first signal end and the second signal end generate signal interaction, the height of the elevator car at the moment is recorded; and when the reference height of the lift car is consistent with the test height of the lift car, comparing the relation between the reference running time of the lift car and the test running time of the lift car, if the reference running time of the lift car is inconsistent with the test running time of the lift car, indicating that the running distance of the traction wheel is changed during the test, so that the time lengths are inconsistent, and the lift car slides in the running process. By the method, the difference between the running condition of the lift car during testing and the reference running state is indirectly judged, if the difference exists between the running condition of the lift car and the reference running state, the difference between the running condition of the lift car and the reference running state is shown, and whether slippage occurs or not can be well judged by judging the running time. Through the elevator running condition analyzing and judging method, whether the elevator car slides or not can be accurately judged, and whether the steel wire rope connected with the car extends or not can be indirectly judged, so that the accuracy of elevator running condition judgment is guaranteed.
Further, when H is equal to H, if the car reference operation time period Tm and the car test operation time period Tm satisfy the relationship: when Tm is Tm, it is determined that no car slip has occurred. When the elevator car is tested, the test running time of the car is consistent with the reference running time, and the situation that the elevator car does not slide is shown.
Further, setting a reference rotation distance M of the traction sheave, and testing the rotation distance M of the traction sheave; when the car slides, if the result of M-M calculation is a positive value, the situation that the heavy side slides is shown.
Further, when the car slides, if the result of M-M is a negative value, the car side slides.
Further, when H > H and Tm ≧ Tm, elongation of the steel cord occurs. After running for a period of time, the steel wire rope may deform, for example, the steel wire rope stretches, and after the steel wire rope stretches, the stopping position, the running time, etc. of the car may be affected, so that various parameters of the elevator need to be correspondingly adjusted. The deformation condition of the steel wire rope is judged by the judging method, when the running time of the elevator is equal, the corresponding car testing height is lower than the reference height of the elevator, the situation that the same height distance needs larger speed is explained, and then the steel wire rope is indirectly explained to extend. By the aid of the judging mode, the judging accuracy can be guaranteed.
Further, the traction ratio n is n, and the elongation of the steel wire rope is n x 2 x (H-H). The elevator can run at a set speed in a reference running state or a test running state, and when the elongation of the steel wire rope is judged, the actual elongation is obtained through 2 x n (H-H), so that the method is accurate and convenient.
Further, the car reference run length Tm includes a length of time that the car runs from the bottom of the hoistway to the top of the hoistway; the car test run length tm includes the length of time that the car runs from the bottom of the hoistway to the top of the hoistway.
Further, the car is unloaded and running at rated speed. The elevator is in an empty state, whether in the test state or in the reference operating state, so that it can be ensured that the weight of the elevator car is identical in the test state or in the reference state, the weight of the elevator car existing as a constant, rather than a variable.
Further, the judgment result of the car sliding is stored in a storage unit, and when the car sliding occurs, a warning signal is sent out. Through judging the condition of sliding of the car, if the sliding occurs, a warning is sent out to remind maintenance personnel to process.
Further, carrying out no-load running test on the car every other time period, and obtaining corresponding car test running time tm and corresponding car test height h.
For a better understanding and practice, the present application is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is a flowchart of an exemplary method for analyzing and determining an operational condition of an elevator according to the present application;
fig. 2 is a schematic diagram of a judgment flow of an elevator operation condition analysis judgment method according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a lift car with a traction ratio of 1:1 and a traction transmission part;
fig. 4 is a schematic structural diagram of a car with a traction ratio of 2:1 and a traction transmission part.
Detailed Description
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application. In the description of the present application, "a plurality" means two or more unless otherwise specified.
According to the elevator running condition analyzing and judging method, the running condition of the elevator is indirectly judged by comparing the parameters of the reference running state and the test running state, and the method mainly comprises the slipping condition and the steel wire rope elongation.
The operating state is referred to. In the initial stage or in a certain test stage, the operating conditions of the elevator and the car are recorded as reference operating states. In the reference running state, the elevator runs in an idle state and runs from the bottom layer to the top layer at a rated speed v, and the starting point of the running of the elevator car and the running process are timed by a timer. The starting moment T1 of the car, the moment T2 at which the signal is received, the reference height H in this state, and the moment T3 at which the car reaches the top floor, the distance M over which the traction sheave of the elevator rotates in the process, are recorded in a memory as parameters in a reference operating state.
And testing the running state. During the actual test, the elevator runs empty and at a nominal speed v from the bottom to the top, the starting moment t1 of the car, the moment t2 at which the signal is received, the test height h at this state, and the moment t3 at which the car reaches the top, the distance m over which the traction sheave of the elevator rotates during this process, are recorded and these data are recorded in a memory and compared in a processor with the data of the reference running state.
Fig. 1 is a flowchart of an exemplary method for analyzing and determining an operation condition of an elevator, and fig. 2 is a flowchart of a method for analyzing and determining an operation condition of an elevator. Referring to fig. 1 and 2, an exemplary method for analyzing and determining an operation condition of an elevator of the present application includes the steps of:
s10, arranging a first signal end on the lift car, arranging a second signal end on the counterweight, and allowing the first signal end and the second signal end to interact with each other through signals. In some preferred embodiments, the first signal terminal comprises a transmitting terminal, the second signal terminal comprises a receiving terminal, and when the transmitting terminal on the car and the receiving terminal on the counterweight run to the same height position, the signal sent by the transmitting terminal is received by the receiving terminal, and the height position of the car is recorded in combination with the height position of the car. The transmitting end may be an infrared transmitter and correspondingly, the receiving end may be an infrared signal receiver. In some further embodiments, the first signal terminal is disposed in a middle portion of the car and the second signal terminal is disposed in a middle portion of the counterweight.
And S20, comparing the car reference height H with the car test height H when the first signal end and the second signal end generate signal interaction. When the signal is transversely transmitted from the transmitting end, and the receiving end reaches the same height as the transmitting end, the receiving end receives the signal transmitted by the transmitting end, and the height of the car at the moment is obtained through the height judgment device or method of the car.
S30, when H is equal to H, if the car reference operation time period Tm and the car test operation time period Tm satisfy the relationship: and Tm is not equal to Tm, judging that the car slips. In some examples, Tm is T3-T1, and Tm is T3-T1.
In some preferred embodiments, the method further includes step S31, when H ═ H, if the car reference operation duration Tm and the car test operation duration Tm satisfy the relationship: when Tm is Tm, it is determined that no car slip has occurred.
In some preferred embodiments, a traction sheave reference turning distance M is set, and a traction sheave test turning distance M; when the car slides, if the result of M-M calculation is a positive value, the situation that the heavy side slides is shown. The rotation distance of the traction sheave is read by an encoder corresponding to the traction sheave, including the rotation distances of the reference running state and the test running state.
In some preferred embodiments, when the car slip occurs, if the result of calculating M-M is negative, it indicates that the car side slip occurs.
In some preferred embodiments, when H > H and Tm ≧ Tm, elongation of the cord is indicated.
In some preferred embodiments, when H is H and Tm is Tm, it indicates that the length of the steel cord has not changed.
FIG. 3 is a schematic structural diagram of a lift car with a traction ratio of 1:1 and a traction transmission part; fig. 4 is a schematic structural diagram of a car with a traction ratio of 2:1 and a traction transmission part. Referring to fig. 3 and 4, when the traction ratio is 1:1, only the traction sheave 30 is in the transmission system, the traction sheave 30 is a fixed pulley, the traction sheave 30 draws the car 10 and the counterweight 20 on both sides, respectively, the first signal terminal 40 is disposed in the middle of the car 10, the second signal terminal 50 is disposed in the middle of the counterweight 20, when the first signal terminal 40 and the second signal terminal 50 are interacted when the steel wire rope is elongated, the height H of the car 10 is only half of the length change of the steel wire rope, the other half of the car is about the height change of the counterweight 20, and therefore, the total elongation of the steel wire rope is twice (H-H), i.e., 2 × 1 (H-H). When the traction ratio is 2:1, as shown in fig. 4, the traction sheave 30 is connected to two movable sheaves, one of which is connected to the cage 10 and the other of which is connected to the counterweight 20, and in the case of this traction ratio, the length change of the wire rope also satisfies twice the traction ratio multiplied by the one-side height change, i.e., 2 x 2 (H-H). In a similar way, for the transmission system with the multiple traction ratios, the elongation of the corresponding steel wire rope meets the formula: 2 x n (H-H). Wherein n is the traction ratio.
In some preferred embodiments, the traction ratio n is set such that the rope elongation is 2 x n (H-H). In some examples the running speed of the elevator car is 5m/s, so the running speed of the elevator in the reference running situation is also 5 m/s. The draw ratio was 2:1, H was 10m in the reference run state, H was 9.9 in the test, and the elongation of the wire rope at this time was 2 × 2 (10-9.9) ═ 0.4 m.
The car reference run length Tm comprises the length of time the car runs from the bottom of the hoistway to the top of the hoistway; the car test run length tm includes the length of time that the car runs from the bottom of the hoistway to the top of the hoistway.
In some preferred embodiments, in the reference operating state, the car is empty and operating at the nominal speed. In the test operating state, the car is unloaded and operated at the nominal speed. In some preferred embodiments, the reference operating state and the test operating state are such that the car is operated at the same nominal speed, wherein the same acceleration speed change operating phase and the same constant speed operating phase are included. So that the speed exists as a constant rather than a variable that affects the comparison.
And storing the judgment result of the car sliding in a storage unit, and sending out a warning signal when the car sliding is generated. After receiving the judgment result of the slipping or the wire rope elongation, the elevator can take certain measures to warn and prompt the maintenance personnel of the fault condition, and after receiving the judgment result of the slipping or the wire rope elongation, the monitoring center informs the maintenance personnel of going to check the elevator condition.
In some preferred embodiments, the cage is tested for idle running every other time period, and the corresponding cage test running duration tm and the corresponding cage test height h are obtained. In these embodiments, the interval time period may be several hours, may be one day, may be one week, and the like. Preferably, the test is carried out in the early morning under the condition of locking the elevator, so as to avoid influencing the use of personnel.
Compared with the prior art, the method for analyzing and judging the running condition of the elevator avoids errors generated by a main machine rotary encoder and signal transmission; the elevator can be self-checked every day without special operation; the elevator slip amount and the wire rope elongation amount can be accurately analyzed. In a word, the judging method is high in precision and good in accuracy.
In addition, the method not only can be used for analyzing and judging the running condition of the elevator, but also can be used for warning the running condition of the elevator, and the judgment result can be sent to a prompter or a monitoring center through analyzing and judging the running condition so as to prompt maintenance personnel to maintain.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.
Claims (10)
1. An elevator operation condition analyzing and judging method is characterized by comprising the following steps:
a first signal end is arranged on the lift car, a second signal end is arranged on the counterweight block, and the first signal end and the second signal end can interact with each other through signals;
comparing a car reference height H with a car test height H when the first signal end and the second signal end generate signal interaction;
when H is equal to H, if the car reference operation time length Tm and the car test operation time length Tm satisfy the relationship: and Tm is not equal to Tm, judging that the car slips.
2. The elevator operation condition analyzing and judging method according to claim 1, characterized in that: when H is equal to H, if the car reference operation time length Tm and the car test operation time length Tm satisfy the relationship: when Tm is Tm, it is determined that no car slip has occurred.
3. The elevator operation condition analyzing and judging method according to claim 1, characterized in that: setting a reference rotation distance M of a traction wheel, and testing the rotation distance M of the traction wheel; when the car slides, if the result of M-M calculation is a positive value, the situation that the heavy side slides is shown.
4. The elevator operation condition analyzing and judging method according to claim 3, characterized in that: when the car slides, if the result of calculating M-M is a negative value, the car side slides.
5. The elevator operation condition analyzing and judging method according to claim 1, characterized in that: when H is more than H and Tm is more than or equal to Tm, the steel wire rope is elongated.
6. The elevator operation condition analyzing and judging method according to claim 5, characterized in that: and the traction ratio n is 2 x n x (H-H) of the elongation of the steel wire rope.
7. The elevator operation condition analyzing and judging method according to any one of claims 1 to 6, characterized in that: the car reference run length Tm comprises the length of time the car runs from the bottom of the hoistway to the top of the hoistway; the car test run length tm includes the length of time that the car runs from the bottom of the hoistway to the top of the hoistway.
8. The elevator operation condition analyzing and judging method according to claim 7, characterized in that: the car is unloaded and running at nominal speed.
9. The elevator operation condition analyzing and judging method according to claim 8, characterized in that: and storing the judgment result of the car sliding in a storage unit, and sending out a warning signal when the car sliding is generated.
10. The elevator operation condition analyzing and judging method according to claim 8, characterized in that: and carrying out no-load running test on the lift car every other time period, and obtaining corresponding lift car test running duration tm and corresponding lift car test height h.
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| CN201911170456.1A CN111056391B (en) | 2019-11-26 | 2019-11-26 | Elevator running condition analyzing and judging method |
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| CN201911170456.1A CN111056391B (en) | 2019-11-26 | 2019-11-26 | Elevator running condition analyzing and judging method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0853274A (en) * | 1994-08-09 | 1996-02-27 | Mitsubishi Denki Bill Techno Service Kk | Position inspection device for balance weight |
| JP2010260682A (en) * | 2009-05-07 | 2010-11-18 | Hitachi Ltd | Elevator device |
| JP4836564B2 (en) * | 2005-12-06 | 2011-12-14 | 株式会社日立ビルシステム | Slip amount detection method and slip amount detection device for main rope for elevator |
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2019
- 2019-11-26 CN CN201911170456.1A patent/CN111056391B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0853274A (en) * | 1994-08-09 | 1996-02-27 | Mitsubishi Denki Bill Techno Service Kk | Position inspection device for balance weight |
| JP4836564B2 (en) * | 2005-12-06 | 2011-12-14 | 株式会社日立ビルシステム | Slip amount detection method and slip amount detection device for main rope for elevator |
| JP2010260682A (en) * | 2009-05-07 | 2010-11-18 | Hitachi Ltd | Elevator device |
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