CN105110119A - Elevator braking detection method and elevator controller - Google Patents
Elevator braking detection method and elevator controller Download PDFInfo
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- CN105110119A CN105110119A CN201510578307.4A CN201510578307A CN105110119A CN 105110119 A CN105110119 A CN 105110119A CN 201510578307 A CN201510578307 A CN 201510578307A CN 105110119 A CN105110119 A CN 105110119A
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Abstract
The invention provides an elevator braking detection method and an elevator controller. The method comprises: S1, by the controller, controlling a lift car to stop running and enabling all brake devices of an elevator to brake; S2, by the controller, controlling a frequency converter to output current, promoting a motor to produce a first directional torque, and detecting a detection signal fed back by an encoder in real time within preset time so as to judge whether the motor rotates or not; S3, by the controller, controlling the frequency converter to output current, enabling the motor to output a second directional torque which is identical but opposite to the first directional torque in the S2, and detecting the detection signal fed back by the encoder in real time within preset time so as to judge whether the motor rotates or not; and S4, if the motor does not rotate in the step S2 as well as the step S3, judging that braking is qualified, and otherwise, judging that braking is not qualified. The method effectively avoids complicated work, such as transporting and loading, in the process of a common detection method, and compensates the problem of insufficient torque finally acting on braking, caused by the uncertain difference and direction of actual weight on the two sides of the motor, of single direction torque detection.
Description
Technical field
The present invention relates to elevator safety field, particularly relate to a kind of elevator internal contracting brake method of inspection and electric life controller.
Background technology
Along with development social now, elevator gos deep in the life of people day by day, and band-type brake plays vital effect as elevator car safety.But in long-term use procedure, the brake block surface of band-type brake often because wearing and tearing cause friction surface to occur carbonization phenomenon, thus causes hardness increase, friction coefficient reduces, and even causes deceleration and stopping performance entirely ineffective.Band-type brake was once lose efficacy, and elevator also can be thereupon out of control, causes irretrievable loss.Therefore, regularly doing inspection to elevator internal contracting brake is indispensable major tasks.
At present, more common brake sticking brake torque measuring method has: detect band-type brake correlation parameter by detecting devices such as pressure sensors, and then infers brake sticking brake ability; Or carry out brake test when the certain load-carrying of elevator belt runs, judge whether braking force meets the requirements etc.These method of inspections often very complicated, needs the longer time to carry out a lot of detection operations, wasting manpower and material resources.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of simple elevator internal contracting brake method of inspection and electric life controller.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of elevator internal contracting brake method of inspection, comprise the following steps:
S1: it is out of service and make all band brake apparatus band-type brakes of elevator that controller controls car;
S2: controller controls output current of frequency converter makes motor produce a first direction moment, and the detection signal detecting encoder feedback in the given time is in real time to judge whether motor rotates;
S3: controller controls output current of frequency converter makes motor export and the second direction moment that first direction moment size is identical, direction is contrary in step S2, and the detection signal detecting encoder feedback in the given time is in real time to judge whether motor rotates;
S4: if motor does not all rotate in step S2 and step S3, then judge that band-type brake is qualified, otherwise judge band-type brake nonconformity.
In elevator internal contracting brake method of inspection of the present invention, before described step S1, also comprise setting up procedure S0: controller receives and detects energizing signal and enter step S1, described detection energizing signal is the detection instruction of outside input or is the inner detection instruction sent after time arrival Preset Time.
In elevator internal contracting brake method of inspection of the present invention, also comprise before described step S1:
Sa: the actual torque difference T1 obtaining clump weight and car based on the actual weight difference between the clump weight of motor both sides and car;
Sb: according to the size of described actual torque difference T1 and the size of default band-type brake moment, size of current in setting steps S2 and S3 is to adjust the size of the first direction moment/second direction moment exported, and the size making the size of described first direction moment/second direction moment equal default band-type brake moment deducts the size of described actual torque difference T1.
In elevator internal contracting brake method of inspection of the present invention, actual weight difference in described step Sa is determined based on under type: utilize the LOAD CELLS in car to obtain the actual measurement weight (AMW) of car, described actual weight difference is the weight of described clump weight and the difference of described actual measurement weight (AMW).
In elevator internal contracting brake method of inspection of the present invention, actual weight difference in described step Sa is determined based on under type: controller controls frequency converter and changes the electric current of output until elevator zero-speed is run, and it is poor that electric current when running according to zero-speed obtains described actual weight.
In elevator internal contracting brake method of inspection of the present invention, described method also comprises step S5: detect actual band-type brake moment after judging band-type brake nonconformity, controller controls frequency converter with the electric current making the electric current of electric machine rotation in step S2 or S3 and progressively reduce for starting point exports until motor stalls, and the moment T2 corresponding to electric current calculated now, then actual band-type brake moment is actual torque difference T1 and moment T2 sum.
In elevator internal contracting brake method of inspection of the present invention, the weight difference between described clump weight and car is the 40%-50% of the nominal payload of described car;
Described method also comprises step S5: detect actual band-type brake moment after judging band-type brake nonconformity, controller controls frequency converter with the electric current making the electric current of electric machine rotation in step S2 or S3 and progressively reduce for starting point exports until motor stalls, and calculate the moment T2 corresponding to electric current now, then the moment that produces for described weight difference of actual band-type brake moment and moment T2 sum.
The invention also discloses a kind of electric life controller, comprising: detect start unit, the first detecting unit, the second detecting unit, result identifying unit;
Detect start unit, for outputting a control signal to frequency converter and the band brake apparatus of elevator device when receiving and detecting energizing signal, stop outgoing current to control frequency converter and control all band brake apparatus band-type brakes, and sending the first detection signal to the first detecting unit;
First detecting unit, for outputting a control signal to described frequency converter after described first detection signal of reception, the motor of elevator device is made to produce a first direction moment to control output current of frequency converter, and the detection signal detecting the encoder feedback of elevator device in the given time is in real time to judge whether motor rotates, and send the second detection signal to the second detecting unit;
Second detecting unit, for outputting a control signal to described frequency converter after receiving described second detection signal, make motor export, second direction moment that direction contrary identical with first direction moment size to control output current of frequency converter, and the detection signal detecting the encoder feedback of elevator device in the given time is in real time to judge whether motor rotates;
Result identifying unit: for judging that band-type brake is qualified when the first detecting unit and the second detecting unit all judge that motor does not rotate, judge band-type brake nonconformity when the first detecting unit and/or the second detecting unit judge electric machine rotation.
In electric life controller of the present invention, described electric life controller also comprises setting unit; Described setting unit is used for the actual torque difference T1 obtaining clump weight and car based on the actual weight difference between the clump weight of motor both sides and car, and according to the size of described actual torque difference T1 and the size of default band-type brake moment, arrange the size of current of frequency converter output to adjust the size of the first direction moment/second direction moment exported, the size making the size of described first direction moment/second direction moment equal default band-type brake moment deducts the size of described actual torque difference T1.
In electric life controller of the present invention, described actual weight difference is determined based on under type: utilize the LOAD CELLS in car to obtain the actual measurement weight (AMW) of car, described actual weight difference is the weight of described clump weight and the difference of described actual measurement weight (AMW); Or control frequency converter and change the electric current of output until elevator zero-speed is run, it is poor that electric current when running according to zero-speed obtains described actual weight.
Implement elevator internal contracting brake method of inspection of the present invention and electric life controller, there is following beneficial effect: method of inspection of the present invention just can directly detect without the need to increasing any hardware, the gravity torque that in the moment simulation car utilizing motor to produce, load-carrying produces, actv. avoids in common method of inspection process and carries the miscellaneous works such as load-carrying, simple; And by performing the moment inspecting of both direction, compensate for the problem finally acting on the moment possibility Shortcomings on band-type brake caused because motor both sides actual weight difference direction is uncertain existing for one direction moment inspecting;
Further, first direction moment/second direction moment when the present invention also detects according to the adjustment of actual weight difference before detection, even if consider there is load in elevator, also can carry out band-type brake moment inspecting accurately, testing can not affect the normal operation of elevator.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the diagram of circuit of elevator internal contracting brake method of inspection of the present invention;
Fig. 2 is the schematic diagram of the moment that in testing process, inverter current produces;
Fig. 3 is the diagram of circuit of the first embodiment of elevator internal contracting brake method of inspection of the present invention;
Fig. 4 is the diagram of circuit of the second embodiment of elevator internal contracting brake method of inspection of the present invention.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
With reference to figure 1, elevator internal contracting brake method of inspection of the present invention comprises the following steps:
S1: it is out of service and make all band brake apparatus band-type brakes of elevator that controller controls car;
S2: controller controls output current of frequency converter makes motor produce a first direction moment, and the detection signal detecting encoder feedback in the given time is in real time to judge whether motor rotates;
S3: controller controls output current of frequency converter makes motor export and the second direction moment (with reference to figure 2) that first direction moment size is identical, direction is contrary in step S2, and the detection signal detecting encoder feedback in the given time is in real time to judge whether motor rotates;
S4: if motor does not all rotate in step S2 and step S3, then judge that band-type brake is qualified, otherwise judge band-type brake nonconformity.
Preset Time can be arranged according to the technical requirements of this area, when judging that band-type brake is inferior-quality, controlling elevator immediately and stopping transport, and can warning reminding.
Visible method of inspection of the present invention just can directly detect without the need to increasing any hardware, the gravity torque that in the moment simulation car utilizing motor to produce, load-carrying produces, and actv. avoids in common method of inspection process and carries the miscellaneous works such as load-carrying, simple; And by performing the moment inspecting of both direction, compensate for the problem finally acting on the moment possibility Shortcomings on band-type brake caused because motor both sides actual weight difference direction is uncertain existing for one direction moment inspecting.
Wherein, the start-up mode performing the detection of this band-type brake has two kinds, and one is manual activation, and one is that timing automatic is opened.Therefore, preferably, with reference to figure 3, before described step S1, following setting up procedure S0 is also comprised.
S0: controller receives detection energizing signal, described detection energizing signal is the detection instruction of outside input or is the inner detection instruction sent after time arrival Preset Time.
Manual activation and timing automatic start the alerting ability that two kinds of opening ways add detection mode, serve failure-free guarantee effect to brake sticking brake moment periodic detection simultaneously.
Wherein, as long as the both direction that first direction moment is contrary with second direction moment, do not limit the corresponding relation in the direction of itself and elevator up-down, if first direction moment can be uplink/downlink moment, second direction moment is contrary with it.
The size of first direction moment/second direction moment pre-sets, and because the clump weight of motor both sides and car exist weight difference, this weight difference produces a moment accordingly.General is all carry out band-type brake detection when elevator no-load, according to the specification of elevators field, weight difference time unloaded is generally the 40%-50% of the nominal payload of car, the moment that the moment applied when detecting and weight difference produce is then the effective torque of total applying, if band-type brake is normal in theory, as long as this effective torque be no more than default band-type brake moment then motor can not rotate, so the size that the size being applied to the first direction moment/second direction moment of motor when detecting is default band-type brake moment deducts the size of the moment that weight difference produces.
If but load-carrying is housed in car when detecting, or real balance factor design is too small, then and actual weight difference will diminish, then actual detection moment is just not enough, and testing result is just inaccurate.
Therefore, preferably, with reference to figure 4, in order to also band-type brake moment inspecting accurately can be carried out when ensureing load is housed in car.The present invention also comprised before detecting:
Sa: the actual torque difference T1 obtaining clump weight and car based on the actual weight difference between the clump weight of motor both sides and car;
Sb: according to the size of described actual torque difference T1 and the size of default band-type brake moment, size of current in setting steps S2 and S3 is to adjust the size of the first direction moment/second direction moment exported, and the size making the size of described first direction moment/second direction moment equal default band-type brake moment deducts the size of described actual torque difference T1.
By calculating actual torque difference T1, the present invention can adjust first direction moment/second direction moment during detection, even if therefore consider there is load in elevator, also can carry out band-type brake moment inspecting accurately, testing can not affect the normal operation of elevator.
Concrete, when obtaining actual weight difference, there are two kinds of methods:
The first is when having LOAD CELLS in car, and utilize the LOAD CELLS in car to obtain the actual measurement weight (AMW) of car, described actual weight difference is the weight of described clump weight and the difference of described actual measurement weight (AMW);
The second is when not having LOAD CELLS in car, and controller controls frequency converter and changes the electric current of output until elevator zero-speed is run, and it is poor that electric current when running according to zero-speed obtains described actual weight.In fact current compensation when zero-speed being run is equivalent to on the electric current in step S2, the S3 of default setting before.
Preferred further, when band-type brake nonconformity being detected, the size of actual band-type brake moment can also be detected further, therefore can comprise the steps S5.
S5: after judging band-type brake nonconformity, actual band-type brake moment is detected, controller controls frequency converter with the electric current making the electric current of electric machine rotation in step S2 or S3 and progressively reduce for starting point exports until motor stalls, and the moment T2 corresponding to electric current calculated now, then actual band-type brake moment is actual torque difference T1 and moment T2 sum.
Such as, if the moment corresponding to electric current I 1 in step S2 or S3 is A1, if detect band-type brake result nonconformity, then from the size of electric current I 1, progressively reduce current value, if when being down to certain electric current I 2, elevator stops operating, moment then corresponding to electric current I 2 is designated as A2, and so final actual band-type brake moment just equals A2 and adds actual torque difference T1.
Accordingly, the invention also discloses a kind of electric life controller, be applied in elevator device, described elevator device comprises motor, the frequency converter be connected with described motor and to be loaded on described motor and to monitor coder, at least one band brake apparatus, car and the clump weight be loaded on this motor whether motor rotate, and described band brake apparatus, frequency converter and coder are all electrically connected with described electric life controller; Described electric life controller comprises: detect start unit, the first detecting unit, the second detecting unit, result identifying unit;
Detect start unit, for outputting a control signal to frequency converter and the band brake apparatus of elevator device when receiving and detecting energizing signal, stop outgoing current to control frequency converter and control all band brake apparatus band-type brakes, and sending the first detection signal to the first detecting unit;
Energizing signal can be the detection instruction of outside input or be the inner detection instruction sent after time arrival Preset Time.
First detecting unit, for outputting a control signal to described frequency converter after described first detection signal of reception, motor is made to produce a first direction moment to control output current of frequency converter, and the detection signal detecting encoder feedback in the given time is in real time to judge whether motor rotates, and send the second detection signal to the second detecting unit;
Second detecting unit, for outputting a control signal to described frequency converter after receiving described second detection signal, make motor export, second direction moment that direction contrary identical with first direction moment size to control output current of frequency converter, and the detection signal detecting encoder feedback in the given time is in real time to judge whether motor rotates;
Result identifying unit: for judging that band-type brake is qualified when the first detecting unit and the second detecting unit all judge that motor does not rotate, judge band-type brake nonconformity when the first detecting unit and/or the second detecting unit judge electric machine rotation.
Preferably, described electric life controller also comprises setting unit; Described setting unit is used for the actual torque difference T1 obtaining clump weight and car based on the actual weight difference between the clump weight of motor both sides and car, and according to the size of described actual torque difference T1 and the size of default band-type brake moment, arrange the size of current of frequency converter output to adjust the size of the first direction moment/second direction moment exported, the size making the size of described first direction moment/second direction moment equal default band-type brake moment deducts the size of described actual torque difference T1.
Wherein, described actual weight difference is determined based on under type: utilize the LOAD CELLS in car to obtain the actual measurement weight (AMW) of car, described actual weight difference is the weight of described clump weight and the difference of described actual measurement weight (AMW); Or control frequency converter and change the electric current of output until elevator zero-speed is run, it is poor that electric current when running according to zero-speed obtains described actual weight.
In sum, method of inspection of the present invention just can directly detect without the need to increasing any hardware, the gravity torque that in the moment simulation car utilizing motor to produce, load-carrying produces, actv. avoids in common method of inspection process and carries the miscellaneous works such as load-carrying, simple; And by performing the moment inspecting of both direction, compensate for the problem finally acting on the moment possibility Shortcomings on band-type brake caused because motor both sides actual weight difference direction is uncertain existing for one direction moment inspecting; Further, first direction moment/second direction moment when the present invention also detects according to the adjustment of actual weight difference before detection, even if consider there is load in elevator, also can carry out band-type brake moment inspecting accurately, testing can not affect the normal operation of elevator.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (10)
1. an elevator internal contracting brake method of inspection, is characterized in that, comprises the following steps:
S1: it is out of service and make all band brake apparatus band-type brakes of elevator that controller controls car;
S2: controller controls output current of frequency converter makes motor produce a first direction moment, and the detection signal detecting encoder feedback in the given time is in real time to judge whether motor rotates;
S3: controller controls output current of frequency converter makes motor export and the second direction moment that first direction moment size is identical, direction is contrary in step S2, and the detection signal detecting encoder feedback in the given time is in real time to judge whether motor rotates;
S4: if motor does not all rotate in step S2 and step S3, then judge that band-type brake is qualified, otherwise judge band-type brake nonconformity.
2. elevator internal contracting brake method of inspection according to claim 1, it is characterized in that, before described step S1, also comprise setting up procedure S0: controller receives and detects energizing signal and enter step S1, described detection energizing signal is the detection instruction of outside input or is the inner detection instruction sent after time arrival Preset Time.
3. elevator internal contracting brake method of inspection according to claim 1, is characterized in that, also comprises before described step S1:
Sa: the actual torque difference T1 obtaining clump weight and car based on the actual weight difference between the clump weight of motor both sides and car;
Sb: according to the size of described actual torque difference T1 and the size of default band-type brake moment, size of current in setting steps S2 and S3 is to adjust the size of the first direction moment/second direction moment exported, and the size making the size of described first direction moment/second direction moment equal default band-type brake moment deducts the size of described actual torque difference T1.
4. elevator internal contracting brake method of inspection according to claim 3, it is characterized in that, actual weight difference in described step Sa is determined based on under type: utilize the LOAD CELLS in car to obtain the actual measurement weight (AMW) of car, described actual weight difference is the weight of described clump weight and the difference of described actual measurement weight (AMW).
5. elevator internal contracting brake method of inspection according to claim 3, it is characterized in that, actual weight difference in described step Sa is determined based on under type: controller controls frequency converter and changes the electric current of output until elevator zero-speed is run, and it is poor that electric current when running according to zero-speed obtains described actual weight.
6. elevator internal contracting brake method of inspection according to claim 3, it is characterized in that, described method also comprises step S5: detect actual band-type brake moment after judging band-type brake nonconformity, controller controls frequency converter with the electric current making the electric current of electric machine rotation in step S2 or S3 and progressively reduce for starting point exports until motor stalls, and the moment T2 corresponding to electric current calculated now, then actual band-type brake moment is actual torque difference T1 and moment T2 sum.
7. elevator internal contracting brake method of inspection according to claim 1, is characterized in that, the weight difference between described clump weight and car is the 40%-50% of the nominal payload of described car;
Described method also comprises step S5: detect actual band-type brake moment after judging band-type brake nonconformity, controller controls frequency converter with the electric current making the electric current of electric machine rotation in step S2 or S3 and progressively reduce for starting point exports until motor stalls, and calculate the moment T2 corresponding to electric current now, then the moment that produces for described weight difference of actual band-type brake moment and moment T2 sum.
8. an electric life controller, is characterized in that, comprising: detect start unit, the first detecting unit, the second detecting unit, result identifying unit;
Detect start unit, for outputting a control signal to frequency converter and the band brake apparatus of elevator device when receiving and detecting energizing signal, stop outgoing current to control frequency converter and control all band brake apparatus band-type brakes, and sending the first detection signal to the first detecting unit;
First detecting unit, for outputting a control signal to described frequency converter after described first detection signal of reception, the motor of elevator device is made to produce a first direction moment to control output current of frequency converter, and the detection signal detecting the encoder feedback of elevator device in the given time is in real time to judge whether motor rotates, and send the second detection signal to the second detecting unit;
Second detecting unit, for outputting a control signal to described frequency converter after receiving described second detection signal, make motor export, second direction moment that direction contrary identical with first direction moment size to control output current of frequency converter, and the detection signal detecting the encoder feedback of elevator device in the given time is in real time to judge whether motor rotates;
Result identifying unit: for judging that band-type brake is qualified when the first detecting unit and the second detecting unit all judge that motor does not rotate, judge band-type brake nonconformity when the first detecting unit and/or the second detecting unit judge electric machine rotation.
9. electric life controller according to claim 8, is characterized in that, described electric life controller also comprises setting unit; Described setting unit is used for the actual torque difference T1 obtaining clump weight and car based on the actual weight difference between the clump weight of motor both sides and car, and according to the size of described actual torque difference T1 and the size of default band-type brake moment, arrange the size of current of frequency converter output to adjust the size of the first direction moment/second direction moment exported, the size making the size of described first direction moment/second direction moment equal default band-type brake moment deducts the size of described actual torque difference T1.
10. electric life controller according to claim 9, it is characterized in that, described actual weight difference is determined based on under type: utilize the LOAD CELLS in car to obtain the actual measurement weight (AMW) of car, described actual weight difference is the weight of described clump weight and the difference of described actual measurement weight (AMW); Or control frequency converter and change the electric current of output until elevator zero-speed is run, it is poor that electric current when running according to zero-speed obtains described actual weight.
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| CN114035044A (en) * | 2021-10-26 | 2022-02-11 | 日立楼宇技术（广州）有限公司 | Method, system, device and medium for testing rated load of motor |
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| CN108910639A (en) * | 2018-07-24 | 2018-11-30 | 日立楼宇技术（广州）有限公司 | Elevator internal contracting brake information processing method, system, equipment and readable storage medium storing program for executing |
| CN111025146A (en) * | 2019-11-25 | 2020-04-17 | 日本电产（东莞）有限公司 | Motor transport and output characteristic inspection device |
| CN111025146B (en) * | 2019-11-25 | 2021-12-28 | 日本电产（东莞）有限公司 | Motor transport and output characteristic inspection device |
| CN113960471A (en) * | 2021-09-30 | 2022-01-21 | 日立电梯（中国）有限公司 | Automatic debugging method for frequency converter |
| CN114035044A (en) * | 2021-10-26 | 2022-02-11 | 日立楼宇技术（广州）有限公司 | Method, system, device and medium for testing rated load of motor |
| CN114035044B (en) * | 2021-10-26 | 2023-08-22 | 日立楼宇技术（广州）有限公司 | Method, system, device and medium for testing rated load of motor |
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