CN103274273A - Elevator overload detection method - Google Patents

Elevator overload detection method Download PDF

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Publication number
CN103274273A
CN103274273A CN2013101233080A CN201310123308A CN103274273A CN 103274273 A CN103274273 A CN 103274273A CN 2013101233080 A CN2013101233080 A CN 2013101233080A CN 201310123308 A CN201310123308 A CN 201310123308A CN 103274273 A CN103274273 A CN 103274273A
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Prior art keywords
overload
elevator
torque
output torque
switch
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CN2013101233080A
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CN103274273B (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

The invention relates to an elevator overload detection method which comprises the steps of sending zero-speed running commands, opening a band-type brake, recording current output torque of an elevator, comparing the current output torque with predetermined overload movement torque, determining that the elevator is overloaded through the comparative result that the current output torque is larger than the predetermined overload movement torque, and making overload responses. The elevator overload detection method can use the output torque of the elevator as a judgment condition to judge whether the elevator is overloaded or not, therefore, another reliable method, besides an overload judgment method by mechanical devices, for judging whether the elevator is overloaded or not is provided, accurate and stable elevator overload detection can be provided, and the overload responses can be conveniently made. The invention further provides an elevator overload detection device.

Description

The elevator overload detecting 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 torque detects the elevator overload of exporting.
Background technology
Elevator is the significant transportation equipment of building such as high residential building, commercial property, and in all kinds of skyscrapers increasing today, the safety method of elevator is extremely crucial problem.
Normally, elevator is provided with the overload protection setting, causes the unusual of elevator work to prevent the load that exceeds elevator load power.Usually, be provided with the device that adopts digital quantity or analog quantity to weigh in the elevator, in order to carry out overload protection.When overload protection took place, elevator was not closed the door, buzzer warning.
Yet this class overload protection all belongs to protection and the detection that utilizes mechanical device to carry out, and there is potential safety hazard in this class mechanical device in case " at the bottom of the crouching " accident very easily takes place in inefficacy.
Summary of the invention
In view of this, be necessary to provide a kind of elevator overload detecting method, can detect the overload condition of elevator reliably, be beneficial to make the overload reaction.
In addition, also be necessary to provide a kind of elevator overload detecting device, can detect the overload condition of elevator reliably, be beneficial to make the overload reaction.
A kind of elevator overload detecting method comprises:
Send the zero-speed action command, open band-type brake;
The current output torque of record elevator;
More described current output torque and the overload action torque of being scheduled to;
Determine the elevator overload with current output torque greater than the comparative result of predetermined overload action torque, make the overload reaction.
Alternatively, described elevator overload detecting method further comprises:
In elevator, insert the overload load of operating point of predetermined meeting;
Open band-type brake, send the zero-speed action command;
Record elevator output torque is as predetermined overload action torque.
Alternatively, described elevator overload detecting method is in described transmission zero-speed action command, and the step of opening band-type brake takes a step forward and comprises:
Determine whether the overload switch is working properly;
Wherein, carry out described transmission zero-speed action command according to definite result of described overload switch malfunction, open the step of band-type brake.
Alternatively, described overload switch is digital quantity or the analog quantity switch of weighing.
Alternatively, described elevator overload detecting method further comprises: the definite result according to the malfunction of overload switch sends the response breakdown signal, detects described overload switch to remind.
A kind of elevator overload detecting device comprises:
The torque detection module is for detection of the current output torque of elevator;
Comparison module is used for described current output torque and the overload action torque of presetting are compared;
Command module is used for generating corresponding order according to the comparative result of described comparison module;
Actuator is used for according to the described elevator action of the command driven of described command module.
Alternatively, described command module is ordered greater than the comparative result generation overload of default overload action torque according to the current output torque of described comparison module, and described actuator is closed band-type brake, open alarm according to the described elevator of described overload command driven.
Alternatively, described default overload action torque is for when described elevator detects, in described elevator, insert the overload load of operating point of predetermined meeting, described command module sends the zero-speed action command and opens the band-type brake order, band-type brake, the output torque of the described elevator that described torque detection module detects are moved, opened to the described elevator zero-speed of described driver drives.
Alternatively, described elevator overload detecting device further comprises the overload switch, and described overload switch is for the detection that overloads of weighing with digital quantity or analog quantity.
Alternatively, described command module is used for carrying out described comparative result transmission overload sense command according to the output torque according to the status signal of described overload switch malfunction; And send the response breakdown signal according to the current output torque of the status signal of described overload switch malfunction and described comparator greater than the comparative result of default overload action torque, detect described overload switch to remind.
By above elevator overload detecting method and device, the output torque that can utilize elevator is as the Rule of judgment that whether overloads, thereby provide the method for judging the another kind of failure-free judgement elevator overload outside the overload at mechanical device, can provide accurate, stable elevator overload to detect, be beneficial to and make the overload reaction.
Description of drawings
Fig. 1 is the diagram of circuit of the elevator overload detecting method of the embodiment of the invention;
Fig. 2 is the diagram of circuit of the elevator overload detecting method of another embodiment of the present invention;
Fig. 3 is the diagram of circuit of determining a kind of embodiment of predetermined overload action torque among Fig. 1;
Fig. 4 is the structural representation of the elevator overload detecting device of the embodiment of the invention.
The specific embodiment
As shown in Figure 1, the elevator overload detecting method according to one embodiment of the present invention may further comprise the steps:
Step 102 sends the zero-speed action command, opens band-type brake.Under this step, elevator is done to start and is prepared.In optional embodiment, this zero-speed action command is sent by integral controller with the order of opening band-type brake.
Step 104, the current output 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, thereby prepares to drive the elevator running.
Step 106 compares the current output torque of recording and the overload action torque of presetting.Wherein, in optional embodiment, described default overload action torque can be inserted in the elevator overload detecting device in advance.
Step 108, is then determined the elevator overload, and is made the overload reaction greater than default overload action torque if the comparative result of step 106 is determined current output torque.In optional embodiment, described overload reaction comprises opens elevator door, closes band-type brake, sends overload warning signal etc.
Step 110 less than default overload action torque, determines then that elevator does not overload, and normally moves elevator if the comparative result of step 106 is determined current output torque.
Elevator overload detecting method by present embodiment, the output torque that can utilize elevator is as the Rule of judgment that whether overloads, thereby provide the method for judging the another kind of failure-free judgement elevator overload outside the overload at mechanical device, can provide accurate, stable elevator overload to detect, be beneficial to and make the overload reaction.
As shown in Figure 2, in another optional embodiment of the present invention, the method that detects that utilization output torque shown in Figure 1 can be overloaded is combined with existing overload detector switch, provides dual overload to detect and judges.May further comprise the steps before the step 102 of this embodiment in embodiment shown in Figure 1:
Step 202 determines whether the overload switch is working properly.Particularly, described overload switch comprises switch, digital quantity or the analog quantity of the traditional mechanical detection elevator load switch etc. of weighing.
Step 204, switch is working properly if step 202 is determined overload, then carries out the elevator overload according to the overload switch and detects and reaction.
After step 202 has been determined the malfunction of overload switch, carry out each step of embodiment shown in Figure 1, utilize the output torque of elevator to overload and detect and reaction.
Step 206 is being determined the malfunction of overload switch, the definite elevator overload of step 108, and after making the overload reaction, is being sent and respond breakdown signal, detects described overload switch to remind.
Alternatively, in other embodiments, step 206 send the response breakdown signal with remind maintenance overload switch also can the output torque that has utilized embodiment shown in Figure 1 overload detect and react each step after carry out.
Elevator overload detecting method by present embodiment, the overload switch of traditional mechanical system, the mode of weighing and the output torque that utilizes elevator can be carried out combination as the Rule of judgment that whether overloads, thereby judge the method that the overload of a kind of failure-free judgement elevator is provided under the situation about breaking down that overloads at mechanical device, can provide accurate, stable elevator overload to detect, be beneficial to and make the overload reaction.
As shown in Figure 3, according to optional embodiment, determine that the method for predetermined overload action torque may further comprise the steps:
Step 302 is inserted the overload load of operating point of predetermined meeting in elevator.
Step 304 is opened band-type brake, sends the zero-speed action command.
Step 306, record elevator output torque is as predetermined overload action torque.
Normally, the method for determining predetermined overload action torque that this embodiment is put down in writing is installed, is carried out when overhauling at elevator, and this overload action torque is arranged in the integral controller.Alternatively, in other embodiments, this predetermined overload action torque also can be undertaken by setting in advance.
As Fig. 4, the elevator of an embodiment of the present invention overload detecting device 40 comprises overload switch 402, actuator 404, command module 406, torque detection module 408 and comparator 410.
Overload switch 402 links to each other with elevator 42, for detect elevator load in traditional mechanical detection mode and produce corresponding on-off signal.In optional embodiment, overload switch 402 is the switch of weighing of digital quantity or analog quantity.
Actuator 404 links to each other with overload switch 402 and elevator 42, is used for generating the corresponding signal that drives according to the overload judged result of overload switch 402, drives the action of elevator 42.
Command module 406 links to each other with overload switch 402, actuator 404, be used for judging signal according to the corresponding overload of status signal generation of overload switch 402 malfunctions, and offer actuator 404 to generate corresponding driving signal, drive the response action of elevator 42.
Torque detection module 408 links to each other with elevator 42, for detection of the current output torque of elevator 42.
Comparator 410 links to each other with torque detection module 408 and command module 406, is used for current output torque and the predefined overload action torque of torque detection module 408 detected elevators 42 are compared, and comparative result is offered command module 406.
The principle of work of described elevator overload detecting device 40 is:
When starting working, at first judge whether normal operation of overload switch 402, if overload switch 402 normal operation, the switch 402 that then overloads carries out the judgement whether elevator 42 overloads according to normal judgment model, actuator 404 also generates the corresponding signal that drives according to judged result, drives the action of elevator 42.
When 402 malfunctions of overload switch, it sends the malfunction signal to command module 406.Command module 406 sends the zero-speed action command accordingly and opens the 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 the zero-speed operation.
The torque detection module detects the output torque of elevator 42 408 this moments, and the current output torque that will detect offers comparator 410.Comparator 410 compares current output torque and the overload action torque of presetting, and comparative result is offered command module 406.
Command module 406 sends the overload signal according to the current output torque of comparator 410 greater than the comparative result of default overload action torque, makes the overload movement response thereby actuator 404 drives elevators.In optional embodiment, described overload reaction comprises opens elevator door, the band-type brake of closing the door, sends overload warning signal etc.Command module 406 sends the normal operation signal according to the current output torque of comparator 410 less than the comparative result of default overload action torque, thereby actuator 404 drives the elevator normal operation.
Described command module 406 also is used for sending the response breakdown signal according to the current output torque of the status signal of described overload switch 402 malfunctions and described comparator 410 greater than the comparative result of default overload action torque, detects described overload switch 402 to remind.
In optional embodiment, the overload action torque that described comparator 410 compares institute's foundation is to set in advance when elevator detects by carrying out.When detecting, in elevator 42, insert the overload load of operating point of predetermined meeting, command module 406 sends the zero-speed action commands and opens the 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 the zero-speed operation.The torque detection module detects the output torque of elevator 42 408 this moments, and the current output torque that will detect offers comparator 410.Comparator 410 is the default overload action torque of output torque storage conduct of elevator 42 at this moment.
Elevator overload detecting device by present embodiment, the overload switch of traditional mechanical system, the mode of weighing and the output torque that utilizes elevator can be carried out combination as the Rule of judgment that whether overloads, thereby judge the method that the overload of a kind of failure-free judgement elevator is provided under the situation about breaking down that overloads at mechanical device, can provide accurate, stable elevator overload to detect, be beneficial to and make the overload reaction.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.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 (10)

1. elevator overload detecting method comprises:
Send the zero-speed action command, open band-type brake;
The current output torque of record elevator;
More described current output torque and the overload action torque of being scheduled to;
Determine the elevator overload with current output torque greater than the comparative result of predetermined overload action torque, make the overload reaction.
2. elevator overload detecting method as claimed in claim 1 further comprises:
In elevator, insert the overload load of operating point of predetermined meeting;
Open band-type brake, send the zero-speed action command;
Record elevator output torque is as predetermined overload action torque.
3. elevator overload detecting method as claimed in claim 1, it is characterized in that: described elevator overload detecting method is in described transmission zero-speed action command, and the step of opening band-type brake takes a step forward and comprises:
Determine whether the overload switch is working properly;
Wherein, carry out described transmission zero-speed action command according to definite result of described overload switch malfunction, open the step of band-type brake.
4. elevator overload detecting method as claimed in claim 3 is characterized in that: described overload switch is digital quantity or the analog quantity switch of weighing.
5. elevator overload detecting method as claimed in claim 3, it is characterized in that: described elevator overload detecting method further comprises: the definite result according to the malfunction of overload switch sends the response breakdown signal, detects described overload switch to remind.
6. elevator overload detecting device comprises:
The torque detection module is for detection of the current output torque of elevator;
Comparison module is used for described current output torque and the overload action torque of presetting are compared;
Command module is used for generating corresponding order according to the comparative result of described comparison module;
Actuator is used for according to the described elevator action of the command driven of described command module.
7. elevator as claimed in claim 6 overload detecting device, it is characterized in that: described command module is ordered greater than the comparative result generation overload of default overload action torque according to the current output torque of described comparison module, described actuator is closed band-type brake, open alarm according to the described elevator of described overload command driven.
8. elevator as claimed in claim 6 overload detecting device, it is characterized in that: described default overload action torque is for when described elevator detects, in described elevator, insert the overload load of operating point of predetermined meeting, described command module sends the zero-speed action command and opens the band-type brake order, band-type brake, the output torque of the described elevator that described torque detection module detects are moved, opened to the described elevator zero-speed of described driver drives.
9. elevator as claimed in claim 6 overload detecting device, it is characterized in that: described elevator overload detecting device further comprises the overload switch, described overload switch is used for the detection that overloads of weighing of digital quantity or analog quantity.
10. elevator as claimed in claim 9 overload detecting device is characterized in that: described command module is used for status signal according to the malfunction of described overload switch to carry out described comparative result according to the output torque and sends the overload sense command; And send the response breakdown signal according to the current output torque of the status signal of described overload switch malfunction and described comparator greater than the comparative result of default overload action torque, 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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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104860149A (en) * 2015-04-21 2015-08-26 深圳市海浦蒙特科技有限公司 Detecting method of building hoist load 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
CN106698128A (en) * 2016-11-30 2017-05-24 四川省特种设备检验研究院 No-load lift overload measuring system and method
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09322389A (en) * 1996-05-30 1997-12-12 Toyota Motor Corp Article carrying apparatus
JP2001253547A (en) * 2000-03-14 2001-09-18 Ishikawajima Harima Heavy Ind Co Ltd Overload protecting method and device for electric bucket elevator
CN201163230Y (en) * 2008-02-02 2008-12-10 王健 Device for measuring elevator balance factor by torsion-testing method
CN102689826A (en) * 2012-05-31 2012-09-26 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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09322389A (en) * 1996-05-30 1997-12-12 Toyota Motor Corp Article carrying apparatus
JP2001253547A (en) * 2000-03-14 2001-09-18 Ishikawajima Harima Heavy Ind Co Ltd Overload protecting method and device for electric bucket elevator
CN201163230Y (en) * 2008-02-02 2008-12-10 王健 Device for measuring elevator balance factor by torsion-testing method
CN102689826A (en) * 2012-05-31 2012-09-26 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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104860149A (en) * 2015-04-21 2015-08-26 深圳市海浦蒙特科技有限公司 Detecting method of building hoist load and frequency converter
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
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
CN106698128A (en) * 2016-11-30 2017-05-24 四川省特种设备检验研究院 No-load lift overload measuring system and method
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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