CN103274273B - Elevator overload detection method - Google Patents

Elevator overload detection method Download PDF

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Publication number
CN103274273B
CN103274273B CN201310123308.0A CN201310123308A CN103274273B CN 103274273 B CN103274273 B CN 103274273B CN 201310123308 A CN201310123308 A CN 201310123308A CN 103274273 B CN103274273 B CN 103274273B
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overload
elevator
torque
driving torque
action
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CN103274273A (en
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郑伟
钟玉涛
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Shenzhen Hpmont Technology Co Ltd
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Shenzhen Hpmont Technology Co Ltd
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Abstract

A kind of Elevator overload detection method, comprising: send zero-speed action command, open band-type brake; The current Driving Torque of record elevator; More described current Driving Torque and predetermined overload action torque; Be greater than the comparative result determination elevator overload of predetermined overload action torque with current Driving Torque, make overload reaction.This Elevator overload detection method can utilize the Driving Torque of elevator as the Rule of judgment whether overloaded, thus the another kind of failure-free provided outside mechanical device judgement overload judges the method for elevator overload, accurate, stable elevator overload can be provided to detect, be beneficial to and make overload reaction.The present invention also provides a kind of elevator overload detecting device.

Description

Elevator overload detection method
Technical field
The present invention relates to a kind of overload detecting method of elevator, particularly, the present invention relates to a kind of method that Driving Torque detects elevator overload.
Background technology
Elevator is the significant transportation equipment of the building such as high residential building, commercial property, and in today that all kinds of skyscraper is increasing, the safety method of elevator is extremely crucial problem.
Normally, elevator is provided with overload protection and arranges, with the exception preventing the load exceeding elevator load power from causing elevator work.Usually, the device adopting digital quantity or analog quantity to weigh is provided with in elevator, in order to carry out overload protection.When there is overload protection, elevator is not closed the door, buzzer warning.
But this kind of overload protection all belongs to the protection and detection that utilize mechanical device to carry out, once lose efficacy, very easily there is " at the bottom of crouching " accident, there is potential safety hazard in this kind of mechanical device.
Summary of the invention
In view of this, be necessary to provide a kind of Elevator overload detection method, the overload condition of elevator reliably can be detected, be beneficial to make overload reaction.
In addition, there is a need to provide a kind of elevator overload detecting device, the overload condition of elevator reliably can be detected, be beneficial to make overload reaction.
A kind of Elevator overload detection method, comprising:
Send zero-speed action command, open band-type brake;
The current Driving Torque of record elevator;
More described current Driving Torque and predetermined overload action torque;
Be greater than the comparative result determination elevator overload of predetermined overload action torque with current Driving Torque, make overload reaction.
Alternatively, described Elevator overload detection method comprises further:
The predetermined load meeting overload operating point is inserted in elevator;
Open band-type brake, send zero-speed action command;
Record elevator Driving Torque is as predetermined overload action torque.
Alternatively, described Elevator overload detection method is in described transmission zero-speed action command, and the step opening band-type brake takes a step forward and comprises:
Determine that whether overload switch is working properly;
Wherein, carry out described transmission zero-speed action command according to the determination result of described overload switch malfunction, open the step of band-type brake.
Alternatively, described overload switch is that digital quantity or analog quantity are weighed switch.
Alternatively, described Elevator overload detection method comprises further: the determination result according to the malfunction of overload switch sends response breakdown signal, detects described overload switch to remind.
A kind of elevator overload detecting device, comprising:
Torque test module, for detecting the current Driving Torque of elevator;
Comparison module, for comparing described current Driving Torque and the overload action torque preset;
Command module, for generating corresponding order according to the comparative result of described comparison module;
Actuator, for the action of elevator according to the command driven of described command module.
Alternatively, the comparative result that described command module is greater than default overload action torque according to the current Driving Torque of described comparison module generates overload order, and described actuator elevator according to described overload command driven closes band-type brake, open alarm.
Alternatively, described default overload action torque is for when described elevator detects, the predetermined load meeting overload operating point is inserted in described elevator, described command module sends zero-speed action command and opens band-type brake order, elevator zero-speed described in described driver drives is run, is opened band-type brake, the Driving Torque of the described elevator that described Torque test module detects.
Alternatively, described elevator overload detecting device comprises overload switch further, and described overload switch is used for weighing with digital quantity or analog quantity carrying out overload detection.
Alternatively, described command module is used for carrying out the described comparative result according to Driving Torque transmission overload sense command according to the status signal of described overload switch malfunction; And the comparative result transmission response breakdown signal of default overload action torque is greater than according to the status signal of described overload switch malfunction and the current Driving Torque of described comparator, detect described overload switch to remind.
By above Elevator overload detection method and device, the Driving Torque of elevator can be utilized as the Rule of judgment whether overloaded, thus the another kind of failure-free provided outside mechanical device judgement overload judges the method for elevator overload, accurate, stable elevator overload can be provided to detect, be beneficial to and make overload reaction.
Accompanying drawing explanation
Fig. 1 is the diagram of circuit of the Elevator overload detection method of the embodiment of the present invention;
Fig. 2 is the diagram of circuit of the Elevator overload detection method of another embodiment of the present invention;
Fig. 3 is the diagram of circuit of a kind of embodiment determining predetermined overload action torque in Fig. 1;
Fig. 4 is the structural representation of the elevator overload detecting device of the embodiment of the present invention.
Detailed description of the invention
As shown in Figure 1, comprise the following steps according to the Elevator overload detection method of one embodiment of the present invention:
Step 102, sends zero-speed action command, opens band-type brake.Under this step, elevator is done to start and is prepared.In alternative embodiments, this zero-speed action command is sent by integral controller with the order of opening band-type brake.
Step 104, the current Driving Torque of record elevator.Particularly, electric life controller provides corresponding driving voltage according to the load state of current elevator, produces corresponding torque with drive motor, thus prepares to drive elevator running.
Step 106, compares recorded current Driving Torque and the overload action torque preset.Wherein, in alternative embodiments, described default overload action torque can be inserted in elevator overload detecting device in advance.
Step 108, if the comparative result of step 106 determines that current Driving Torque is greater than default overload action torque, then determines elevator overload, and makes overload reaction.In alternative embodiments, described overload reaction comprises and opens elevator door, closes band-type brake, sends overload warning signal etc.
Step 110, if the comparative result of step 106 determines that current Driving Torque is less than default overload action torque, then determines that elevator does not overload, and normally runs elevator.
By the Elevator overload detection method of present embodiment, the Driving Torque of elevator can be utilized as the Rule of judgment whether overloaded, thus the another kind of failure-free provided outside mechanical device judgement overload judges the method for elevator overload, accurate, stable elevator overload can be provided to detect, be beneficial to and make overload reaction.
As shown in Figure 2, in another optional embodiment of the present invention, the method utilizing Driving Torque to carry out overload detection shown in Fig. 1 can be combined with existing overload detector switch, provide dual overload to detect and judge.Comprise the following steps before the step 102 of this embodiment in the embodiment shown in Fig. 1:
Step 202, determines that whether overload switch is working properly.Particularly, described overload switch comprises the switch of traditional mechanical detection elevator load, digital quantity or analog quantity and to weigh switch etc.
Step 204, if step 202 determines overload, switch is normal, then carry out elevator overload detection and reaction according to overload switch.
After step 202 determines the malfunction of overload switch, perform each step of the embodiment shown in Fig. 1, utilize the Driving Torque of elevator to carry out overload and detect and reaction.
Step 206, determining overload switch malfunction, step 108 determines elevator overload, and after making overload reaction, sends response breakdown signal, detects described overload switch to remind.
Alternatively, in other embodiments, step 206 transmission response breakdown signal carries out to remind to overhaul overload switch also can carry out overload detection and react each step at the Driving Torque that make use of Fig. 1 illustrated embodiment after.
By the Elevator overload detection method of present embodiment, the overload switch of traditional mechanical system, weighting manner can be combined as the Rule of judgment whether overloaded with utilizing the Driving Torque of elevator, thus provide a kind of failure-free to judge the method for elevator overload when mechanical device judges that overload is broken down, accurate, stable elevator overload can be provided to detect, be beneficial to and make overload reaction.
As shown in Figure 3, according to optional embodiment, determine that the method for predetermined overload action torque comprises the following steps:
Step 302, inserts the predetermined load meeting overload operating point in elevator.
Step 304, opens band-type brake, sends zero-speed action command.
Step 306, record elevator Driving Torque is as predetermined overload action torque.
Normally, the method for the overload action torque that the determination described in this embodiment is predetermined is carried out when elevator installation, maintenance, and this overload action torque is arranged in integral controller.Alternatively, in other embodiments, this predetermined overload action torque is also undertaken by pre-setting.
As Fig. 4, the elevator overload detecting device 40 of an embodiment of the present invention comprises overload switch 402, actuator 404, command module 406, Torque test module 408 and comparator 410.
Overload switch 402 is connected with elevator 42, for detect elevator load in traditional mechanical detection mode and produce corresponding on-off signal.In alternative embodiments, the switch 402 that overloads is the switch of weighing of digital quantity or analog quantity.
Actuator 404 is connected with overload switch 402 and elevator 42, for generating corresponding drive singal according to the overload judged result of overload switch 402, drives the action of elevator 42.
Command module 406 is connected with overload switch 402, actuator 404, signal is judged for generating corresponding overload according to the status signal of overload switch 402 malfunction, and be supplied to actuator 404 to generate corresponding drive singal, drive the response action of elevator 42.
Torque test module 408 is connected with elevator 42, for detecting the current Driving Torque of elevator 42.
Comparator 410 is connected with Torque test module 408 and command module 406, for the current Driving Torque of the elevator 42 detected by Torque test module 408 and the overload action torque preset being compared, and comparative result is supplied to command module 406.
The principle of work of described elevator overload detecting device 40 is:
When starting working, first judge whether overload switch 402 normally works, if overload switch 402 normally works, then the switch 402 that overloads carries out according to normal judgment model the judgement whether elevator 42 overload, actuator 404 also generates corresponding drive singal according to judged result, drives the action of elevator 42.
When overload switch 402 malfunction, it sends malfunction signal to command module 406.Command module 406 sends zero-speed action command and open band-type brake order accordingly, actuator 404 according to described zero-speed action command with open band-type brake command driven elevator 42 and open band-type brake, prepare zero-speed and run.
Torque test module 408 now detects the Driving Torque of elevator 42, and the current Driving Torque detected is supplied to comparator 410.Current Driving Torque and the overload action torque preset compare by comparator 410, and comparative result is supplied to command module 406.
Command module 406 according to the current Driving Torque of comparator 410 be greater than default overload action torque comparative result send overload signal, actuator 404 thus drive elevator make overload movement response.In alternative embodiments, described overload reaction comprises and opens elevator door, band-type brake of closing the door, sends overload warning signal etc.The comparative result that command module 406 is less than default overload action torque according to the current Driving Torque of comparator 410 sends normal working signal, actuator 404 thus drive elevator normally work.
The comparative result of described command module 406 also for being greater than default overload action torque according to the status signal of described overload switch 402 malfunction and the current Driving Torque of described comparator 410 sends response breakdown signal, detects described overload switch 402 to remind.
In alternative embodiments, described comparator 410 compares the overload action torque of institute's foundation is by carrying out pre-setting when elevator detects.When detecting, the predetermined load meeting overload operating point is inserted in elevator 42, command module 406 sends zero-speed action command and open band-type brake order, actuator 404 according to described zero-speed action command with open band-type brake command driven elevator 42 and open band-type brake, prepare zero-speed and run.Torque test module 408 now detects the Driving Torque of elevator 42, and the current Driving Torque detected is supplied to comparator 410.The Driving Torque of now elevator 42 is stored as default overload action torque by comparator 410.
By the elevator overload detecting device of present embodiment, the overload switch of traditional mechanical system, weighting manner can be combined as the Rule of judgment whether overloaded with utilizing the Driving Torque of elevator, thus provide a kind of failure-free to judge the method for elevator overload when mechanical device judges that overload is broken down, accurate, stable elevator overload can be provided to detect, be beneficial to and make overload reaction.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (8)

1. an Elevator overload detection method, comprising:
Send zero-speed action command, open band-type brake;
The current Driving Torque of record elevator;
More described current Driving Torque and predetermined overload action torque;
Be greater than the comparative result determination elevator overload of predetermined overload action torque with current Driving Torque, make overload reaction;
Described Elevator overload detection method is in described transmission zero-speed action command, and the step opening band-type brake takes a step forward and comprises:
Determine that whether overload switch is working properly;
Wherein, carry out described transmission zero-speed action command according to the determination result of described overload switch malfunction, open the step of band-type brake.
2. Elevator overload detection method as claimed in claim 1, comprises further:
The predetermined load meeting overload operating point is inserted in elevator;
Open band-type brake, send zero-speed action command;
Record elevator Driving Torque is as predetermined overload action torque.
3. Elevator overload detection method as claimed in claim 1, is characterized in that: described overload switch is that digital quantity or analog quantity are weighed switch.
4. Elevator overload detection method as claimed in claim 1, is characterized in that: described Elevator overload detection method comprises further: the determination result according to the malfunction of overload switch sends response breakdown signal, detects described overload switch to remind.
5. an elevator overload detecting device, comprising:
Torque test module, for detecting the current Driving Torque of elevator;
Comparison module, for comparing described current Driving Torque and the overload action torque preset;
Command module, for generating corresponding order according to the comparative result of described comparison module;
Actuator, for the action of elevator according to the command driven of described command module;
Overload switch, carries out overload and detects for weighing with digital quantity or analog quantity.
6. elevator overload detecting device as claimed in claim 5, it is characterized in that: the comparative result that described command module is greater than default overload action torque according to the current Driving Torque of described comparison module generates overload order, described actuator elevator according to described overload command driven closes band-type brake, open alarm.
7. elevator overload detecting device as claimed in claim 5, it is characterized in that: described default overload action torque is for when described elevator detects, the predetermined load meeting overload operating point is inserted in described elevator, described command module sends zero-speed action command and opens band-type brake order, elevator zero-speed described in described driver drives is run, is opened band-type brake, the Driving Torque of the described elevator that described Torque test module detects.
8. elevator overload detecting device as claimed in claim 5, is characterized in that: described command module is used for carrying out the described comparative result according to Driving Torque according to the status signal of described overload switch malfunction and sends overload sense command; And the comparative result transmission response breakdown signal of default overload action torque is greater than according to the status signal of described overload switch malfunction and the current Driving Torque of described comparator, detect described overload switch to remind.
CN201310123308.0A 2013-04-10 2013-04-10 Elevator overload detection method Active CN103274273B (en)

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WO2017097261A1 (en) * 2015-12-10 2017-06-15 冯春魁 Method and system for performing acquisition, control, running and load monitoring on elevator parameters
CN104860149B (en) * 2015-04-21 2017-11-17 深圳市海浦蒙特科技有限公司 Building hoist load testing method and frequency converter
CN105460723A (en) * 2015-12-21 2016-04-06 中联重科股份有限公司 Method, apparatus and system for sensing balance coefficient of elevator and engineering machine
CN106698128B (en) * 2016-11-30 2020-09-08 四川省特种设备检验研究院 Overload measuring system and method for unloaded elevator

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JP3273730B2 (en) * 1996-05-30 2002-04-15 トヨタ自動車株式会社 Article transfer device
JP4369591B2 (en) * 2000-03-14 2009-11-25 石川島運搬機械株式会社 Continuous unloader
CN201163230Y (en) * 2008-02-02 2008-12-10 王健 Device for measuring elevator balance factor by torsion-testing method
CN102689826B (en) * 2012-05-31 2014-12-03 广州日滨科技发展有限公司 Method and system for detecting balance coefficient of elevator on basis of frequency converter

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