CN101190764B - Elevator overspeed testing apparatus - Google Patents
Elevator overspeed testing apparatus Download PDFInfo
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- CN101190764B CN101190764B CN200610118493.4A CN200610118493A CN101190764B CN 101190764 B CN101190764 B CN 101190764B CN 200610118493 A CN200610118493 A CN 200610118493A CN 101190764 B CN101190764 B CN 101190764B
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- testing apparatus
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Abstract
The invention discloses an elevator overspeed detecting device and comprises a position detecting device, clapboards and an elevator safety control device; wherein, the position detecting device which is arranged on the top part of an elevator cage consists of a plurality of sensors; the clapboards are arranged at an elevator terminal landing in a well; the sensors and the clapboards are interacted to produce the instantaneous absolute speed of the elevator cage at a corresponding absolute position point in the well; the elevator safety control device judges whether the elevator cage has normal speed or not, and if the speed of the elevator cage at a corresponding absolute position point in the well exceeds a permissible value, the dead-stop of the elevator cage is conducted by controlling an elevator control system; two clapboards and two sensors are respectively and mutually interacted at any time. The invention can accurately detect whether the elevator has an overspeed and has multistage redundant protection, thus ensuring the safety of personnel and equipments. Furthermore, the invention is simple in structure.
Description
Technical field
The present invention relates to a kind of elevator overspeed testing apparatus.
Background technology
Along with the development of elevator technology, the running velocity of elevator is also more and more higher.If the elevator of high-speed cruising, in the situation that out of control, could not perform safety guard-safeguard well, will produce personal casualty.When particularly the speed of elevator under surpassing certain situation of its design is moved, more easily generation accident; So it is suitable important that the overspeed testing apparatus of elevator seems.When elevator overspeed testing apparatus correctly detects elevator overspeed, can control elevator and enter safety guard-safeguard mode operation, to guarantee passenger's life security.Also have, the energy disperser of elevator (comprising car buffer and counterweight buffer) is the indispensable safety block of lift facility, and generally elevator speed is higher, and its energy disperser is also higher, and the elevator pit of requirement is also darker.But, if elevator overspeed testing apparatus reasonable in design, when the effect of this device can make the speed of elevator under surpassing certain situation of its design move, forces to reduce the running velocity of elevator, can reduce the designing requirement of energy disperser like this, can reduce pit depth simultaneously.Prior art is as described in Chinese invention patent specification sheets CN 1040863C (November 25 1998 day for announcing), and cooperating is with in its light barrier detector and measurement, can detect the overspeed condition of elevator.But it is complicated that it measures band structure, and this device also has following technological deficiency: 1, fault redundance is inadequate, owing to can only there being the work of a light barrier instrument, if a certain light barrier instrument et out of order can not carry out redundancy detection simultaneously; 2, cannot detect and judge the up-downgoing of elevator; and the up-downgoing running state whether elevator speed exceeds the speed limit with elevator be closely related (as elevator starts upwards operation and elevator moves from hoistway top to bottom at bottom; its speed through light barrier detector is different, the most important thing is that its limited speed that starts safety guard-safeguard is also different).
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of elevator overspeed testing apparatus, and whether it can correctly detect elevator and exceed the speed limit, and has multilevel redundancy protection, ensures the safety of the person and equipment, and simple in structure.
For solving the problems of the technologies described above, elevator overspeed testing apparatus of the present invention comprises a position detecting device that is arranged on elevator car roof, is arranged on the dividing plate at elevator terminal stop place in hoistway, elevator safety control setup; Described position detecting device is comprised of a plurality of sensors; Described sensor and dividing plate interact, produce lift car at the instantaneous absolute velocitye of the corresponding absolute location point of hoistway, whether the speed of the lift car that the judgement of elevator safety control setup is described is normal, if confirm that lift car surpasses permissible value in the speed of the corresponding absolute location point of hoistway, controls elevator emergency and stops; At sensor and interactional arbitrary moment of dividing plate, all there are two dividing plates and two sensors to interact respectively simultaneously.
Owing to adopting elevator overspeed testing apparatus of the present invention; all there are at any one time two dividing plates and two sensors to interact respectively simultaneously; produce lift car at the instantaneous absolute velocitye of the corresponding absolute location point of hoistway; therefore there is multilevel redundancy protection; even if operative sensor breaks down, also can implement correct protection.
In addition, position detecting device of the present invention is comprised of a plurality of sensors; Position detecting device is directly installed on car top, and dividing plate is arranged on the hold-down arm of terminal stop, and structure is relatively simple.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and the specific embodiment, the present invention is further detailed explanation:
Fig. 1 is the topological diagram of an embodiment of elevator overspeed testing apparatus of the present invention;
Fig. 2 is the scheme of installation of opto-electronic pickup and dividing plate in one embodiment of the invention;
Fig. 3 is the scheme of installation of 6 opto-electronic pickups in one embodiment of the invention;
Fig. 4 is the schematic diagram of the elevator safety control setup in the present invention.
The specific embodiment
As shown in Figure 1, elevator overspeed testing apparatus of the present invention comprises lift car 1, the position detecting device being comprised of a plurality of sensors (S1～S6 as shown in FIG.).Described sensor, by spatially mutually staggering, is arranged, can be worked alone simultaneously according to certain logical place.Described position detecting device is arranged on lift car 1 top.Described sensor is opto-electronic pickup or magnetic susceptibility sensor.The quantity of sensor is more than or equal to 4.Each forms (referring to Fig. 3) by an illuminator and a light receiving device described opto-electronic pickup S1～S6.
On cage guide 8 in hoistway, be arranged with a plurality of hold-down arms 9～14 from top to bottom in parallel, each guide rails assembling arm is provided with two dividing plates 15～26.Dividing plate 15～26 has certain length, and spatially according to certain logical place relation, arranges (corresponding with sensor).
Shown in Figure 4, also comprise elevator safety control setup 27, elevator safety control setup 27 at least comprises a logic processing module 29, safety relay 28.Described sensor S1～S6 is electrically connected to logic processing module 29.When described sensor S1～S6 does the used time (interaction relationship of sensor and dividing plate can referring to Fig. 2) with dividing plate 15～26 is mutually corresponding respectively, by the detection signal input logic processing module 29 of sensor S1～S6, and calculate lift car 1 at the instantaneous absolute velocitye of the corresponding absolute location point of hoistway by logic processing module 29.If this speed surpasses permissible value, logic processing module 29 output signals disconnect safety relay 28, the normally closed contact 30 of this safety relay 28 disconnects, by apparatus for controlling elevator 31, make elevator emergency stop that (normally closed contact 30 is by apparatus for controlling elevator 31, form the band-type brake power control loop of elevator traction machine, when normally closed contact 30 disconnects, the band-type brake power supply dead electricity of elevator traction machine, after elevator traction machine is embraced by band brake apparatus, control elevator out of service).All there are at any one time two dividing plates and two sensors to interact respectively simultaneously.
Referring to Fig. 1, when lift car 1 from hoistway top terminal stop when operation down, at hoistway position L6+L place, two dividing plates 16,15 that sensor S4 and sensor S6 are mounted respectively on arm 9 insert respectively, sensor S4 and S6 export high level " 1 " signal to logic processing module 29 simultaneously, and logic processing module 29 is by record logical time point T1 now.Arrived after logical time point T2, sensor S4 and S6 will deviate from dividing plate 16,15 simultaneously, sensor S4 and S6 output low level " 0 " signal simultaneously now, and logic processing module 29 is by record logical time point T2 now.The momentary velocity that logic processing module 29 can calculate lift car 1 is V=L/ (T2-T1), and wherein L represents the length of dividing plate.
Logic processing module 29 is according to the standard speed V of pre-stored relevant position
sX1compare with V, if V is greater than V
sX1, logic processing module 29 output signals disconnect the normally closed contact 30 of safety relay 28, thereby control apparatus for controlling elevator 31, lift car 1 are suddenly stopped.If V is less than V at L6+L place
sX1, lift car 1 can run to L5+L place, and sensor S2 and S6 are inserted by the dividing plate 18,17 on hold-down arm 10 herein respectively, and sensor S2 and S6 export high level " 1 " signal simultaneously, and logic processing module 29 is by record logical time point T3 now.Arrived after logical time point T4, sensor S2 and S6 will deviate from respectively dividing plate 18,17 simultaneously, sensor S2 and S6 output low level " 0 " signal simultaneously now, and logic processing module 29 is by record logical time point T4 now.The momentary velocity that logic processing module 29 can calculate lift car 1 is V=L/ (T4-T3), and logic processing module 29 is according to the standard speed V of pre-stored relevant position
sX2compare with V, if V is greater than V
sX2, logic processing module 29 output signals disconnect the normally closed contact 30 of safety relay 28, thereby control elevator emergency, stop.The like, until the dividing plate 26,25 on the hold-down arm 14 at L1 place, position and the combined protection of sensor S3, S5.
Following table is the dividing plate of terminating layer place diverse location and respective sensor action logic relation (upper terminating layer and lower terminating layer full symmetric) under elevator in the present invention.
Can find out, lift car 1 is when terminal stop, and interactional arbitrary moment of sensor and dividing plate has two dividing plates and two sensors to interact, to produce lift car at the instantaneous absolute velocitye of the corresponding absolute location point of hoistway simultaneously.Even if a certain like this sensor breaks down, another one sensor can also shield, as: even if sensor S4 breaks down, sensor S6 can also shield.Also have as mentioned above, even break down at L6+L place sensor, during elevator overspeed, could not protect in time, during to L5+L place, can also shield, the like, until the combined protection of the sensor S3 of L1 place, S5.Visible, emergency protection of the present invention has enough redundancies.
Meanwhile, as shown above, according to sensor S4, S6, sensor S2, S6, sensor S3, S4, sensor S2, S5, sensor S4, S5 and sensor S3, S5 export to the logical order of logic processing module 29, can judge that lift car 1 is up or descending.As: sensor S4, S6 first export " 1 ", then sensor S2, S6 output " 1 ", lift car 1 is descending; If sensor S2, S6 first export " 1 ", then sensor S4, S6 output " 1 ", lift car 1 is up.The like.Why to judge the up-downgoing of lift car 1, because locate in the fixed position point (as L5+L) at elevator terminal stop place, the standard speed (V of lift car 1 when descending
sX2) standard speed (V of (when elevator starts) when up
sS2) be different.This point is most important for the correctness of the overspeed protection of elevator.
Visible the present invention has solved to judge whether lift car 1 exceeds the speed limit in the speed of the corresponding absolute location point of hoistway completely, thus the problem that correct enforcement is protected when judgement elevator overspeed.And have multilevel redundancy protection, even if operative sensor breaks down, also can implement correct protection.Can also judge the up-downgoing of elevator, according to different up-downgoing running statees, implement the protection of different benchmark simultaneously.
Claims (6)
1. an elevator overspeed testing apparatus, comprises a position detecting device that is arranged on elevator car roof, is arranged on the dividing plate at elevator terminal stop place in hoistway, elevator safety control setup; It is characterized in that: described position detecting device is comprised of a plurality of sensors; Described sensor and dividing plate interact, produce lift car at the instantaneous absolute velocitye of the corresponding absolute location point of hoistway, whether the speed of the lift car that the judgement of elevator safety control setup is described is normal, if confirm that lift car surpasses permissible value in the speed of the corresponding absolute location point of hoistway, controls lift car by apparatus for controlling elevator and suddenly stops; Interactional arbitrary moment of described sensor and dividing plate all has two dividing plates and two sensors to interact respectively simultaneously.
2. elevator overspeed testing apparatus as claimed in claim 1, it is characterized in that: elevator safety control setup interacts according to different elevator terminal stop place's dividing plates and sensor, produce the order of high and low level " 1 " or " 0 ", judgement lift car is up or descending.
3. elevator overspeed testing apparatus as claimed in claim 1, is characterized in that: described sensor is opto-electronic pickup or magnetic susceptibility sensor.
4. elevator overspeed testing apparatus as claimed in claim 1 or 2, is characterized in that: described sensor is more than or equal to 4.
5. elevator overspeed testing apparatus as claimed in claim 1 or 2, it is characterized in that: described elevator safety control setup at least comprises a logic processing module, described sensor is electrically connected to this logic processing module, when described sensor and dividing plate interaction, by the detection signal input logic processing module of sensor, and calculate lift car at the instantaneous absolute velocitye of the corresponding absolute location point of hoistway by logic processing module, if this speed surpasses permissible value, logic processing module output signal disconnects safety relay, by apparatus for controlling elevator, elevator emergency is stopped.
6. elevator overspeed testing apparatus as claimed in claim 1 or 2, is characterized in that: the terminal stop place in hoistway is arranged with a plurality of hold-down arms in parallel, and each hold-down arm is provided with two dividing plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610118493.4A CN101190764B (en) | 2006-11-20 | 2006-11-20 | Elevator overspeed testing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610118493.4A CN101190764B (en) | 2006-11-20 | 2006-11-20 | Elevator overspeed testing apparatus |
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| CN101190764A CN101190764A (en) | 2008-06-04 |
| CN101190764B true CN101190764B (en) | 2014-07-16 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106429697B (en) * | 2016-09-13 | 2018-09-28 | 江苏旭云物联信息科技有限公司 | A kind of Elevator safety precaution system |
| CN111563229B (en) * | 2020-05-13 | 2022-03-22 | 浙江大学 | Vertical ladder overspeed automatic reset fault diagnosis method based on Gaussian mixture model |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1131121A (en) * | 1994-11-18 | 1996-09-18 | 英万蒂奥股份公司 | Excess speed detector with multiple light barrier |
| CN1261048A (en) * | 1998-12-22 | 2000-07-26 | 奥蒂斯电梯公司 | Device and apparatus for determining speed of elevator |
| CN1350973A (en) * | 2000-10-31 | 2002-05-29 | 三菱电机株式会社 | Elevator speed regulator |
| CN1733585A (en) * | 2004-08-12 | 2006-02-15 | 因温特奥股份公司 | Elevator system with a device for determining the position of an elevator cabin and method to operate the elevator system |
-
2006
- 2006-11-20 CN CN200610118493.4A patent/CN101190764B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1131121A (en) * | 1994-11-18 | 1996-09-18 | 英万蒂奥股份公司 | Excess speed detector with multiple light barrier |
| CN1261048A (en) * | 1998-12-22 | 2000-07-26 | 奥蒂斯电梯公司 | Device and apparatus for determining speed of elevator |
| CN1350973A (en) * | 2000-10-31 | 2002-05-29 | 三菱电机株式会社 | Elevator speed regulator |
| CN1733585A (en) * | 2004-08-12 | 2006-02-15 | 因温特奥股份公司 | Elevator system with a device for determining the position of an elevator cabin and method to operate the elevator system |
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| CN101190764A (en) | 2008-06-04 |
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