CN102070053B - Test device of elevator car ascending overspeed protection device - Google Patents
Test device of elevator car ascending overspeed protection device Download PDFInfo
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- CN102070053B CN102070053B CN201010518204A CN201010518204A CN102070053B CN 102070053 B CN102070053 B CN 102070053B CN 201010518204 A CN201010518204 A CN 201010518204A CN 201010518204 A CN201010518204 A CN 201010518204A CN 102070053 B CN102070053 B CN 102070053B
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Abstract
The invention relates to a test device of an elevator car ascending overspeed protection device, which mainly solves the problem that the unified test device suitable for all the car ascending overspeed protection devices does not exist at present. The test device comprises an elevator control cabinet and an ascending overspeed protection device. The ascending overspeed protection device comprises a speed limiter and a band-type brake and further comprises a rope clamper, a car safety tong and a counterpoise safety tong, wherein the band-type brake is connected with the control cabinet, the rope clamper or the car safety tong or the counterpoise safety tong is connected to the speed limiter, a switch is arranged on the band-type brake, the speed limiter and the rope clamper or the car safety tong or the counterpoise safety tong respectively, the test device is connected between the control cabinet and the ascending overspeed protection device, the band-type brake is connected to the test device, and the switches on the band-type brake, the speed limiter and the rope clamper or the car safety tong or the counterpoise safety tong are connected to the test device respectively. The test device is suitable for testing the drag-driven elevator car ascending overspeed protection devices of all the manufacturers, and is safe and reliable in test operation and simple in test procedures.
Description
Technical field
The present invention relates to the elevator technology field, relate in particular to a kind of experimental set-up that is applicable to the car protection device for over-speed ascending of all tracking-driven elevators.
Background technology
The tracking-driven elevator car up operation hypervelocity may occur under some unforeseen circumstances.Under such unforeseen circumstances; In order to guarantee the safe in utilization of elevator; The car protection device for over-speed ascending has been installed in tracking-driven elevator inside, and the car protection device for over-speed ascending of towed elevator generally adds the wire holder that acts on the steel rope (suspension strop or compensation rope) by: velocity limiter, and perhaps velocity limiter adds the bidirectional safety tongs that acts on the car; Perhaps velocity limiter adds the safety tongs that acts on the counterweight, and perhaps velocity limiter adds the band-type brake composition that acts on the traction sheave.
According to " elevator manufacturing and installation safety standard "; Need make an experiment to protection device for over-speed ascending; But because the car protection device for over-speed ascending of each elevator complete machine manufacturer installing maybe be different; At present, each elevator complete machine manufacturer uses various instruments and different test methods checking car protection device for over-speed ascending, so just has some shortcomings:
1. test process can be used various instrument, and the testing tool between different elevator complete machine manufacturers differs and uses mutually surely;
2. testing process between different elevator complete machine manufacturers or method differ and use mutually surely;
3. to need the operator to operate many for test process, easily error;
4. can not realize the operation of test process whole-process automatic;
5. some test method need be changed the parameter of elevator control cabinet plate, and test also need recover raw parameter after accomplishing.
Publication number is CN1663902; Name is called China's invention application of the test method of a kind of elevator and emergency braking; It possesses and is used to detect the governor whether lift car exceeds the speed limit; And starting the emergency braking apparatus that prevents that lift car from dropping through this governor, winch and control setup are arranged near the following department enclosure or middle body of hoist trunk.Whether effectively representing during emergency braking that signal that the rope sheave of winch has occurred dallying is sent to is arranged near the notifying device top or is arranged on the notifying device in the lift car, thereby confirm emergency braking apparatus braking.But this method only is applicable to the pressure driven elevators of a part of winch and so on, between different elevators, can not use mutually.Using at present maximum to tracking-driven elevator is that velocity limiter adds that the band-type brake that acts on the traction sheave forms the car protection device for over-speed ascending; Some elevators are also arranged; Use velocity limiter to add and act on the wire holder on the steel rope (suspension strop or compensation rope), perhaps velocity limiter adds the bidirectional safety tongs that acts on the car, and perhaps velocity limiter adds the car protection device for over-speed ascending of the safety tongs composition that acts on the counterweight; When these elevators of test; If a brake equipment of elevator had lost efficacy, whether effectively this method is merely able to confirm elevator braking, loses efficacy but can not detect that brake equipment.
Summary of the invention
The present invention has mainly solved at present the not problem of the unified experimental set-up that is applicable to all car protection device for over-speed ascending, and a kind of experimental set-up of operating automatic, simple to operate, as to be applicable to all tracking-driven elevators car protection device for over-speed ascending is provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of experimental set-up of lift car protection device for over-speed ascending; Elevator comprises elevator control cabinet and protection device for over-speed ascending; Said protection device for over-speed ascending comprises velocity limiter, is installed in the band-type brake on the elevator traction machine; On band-type brake and velocity limiter, have switch, between control housing and protection device for over-speed ascending, be connected with experimental set-up, said experimental set-up comprises a control module; Control module links to each other with elevator control cabinet through a relay interface module; Said relay interface module provides the safety return circuit of dry contact signal to elevator control cabinet, guarantees experimental set-up in use, and elevator control cabinet can not be controlled the elevator operation; Control module links to each other with band-type brake through a band-type brake control module, and the switch of band-type brake is connected on the control module, and said control module being opened or closing through band-type brake control module control band-type brake, and receives the operating state of band-type brake on-off signal inspection band-type brake; The switch of said velocity limiter is connected on the control module, to the operating state of control module feedback velocity limiter.The present invention adopts an experimental set-up to be connected between elevator control cabinet and the protection device for over-speed ascending, can use identical testing process or method when making test, is applicable to the test of all tracking-driven elevator car protection device for over-speed ascending; The present invention has also realized the operation of test process whole-process automatic, and in addition, the present invention need not change former elevator and arrange, and is easy to use.Experimental set-up links to each other with band-type brake, controls opening or closing of band-type brake; Control module in the experimental set-up detects the switch of the switch of protection device for over-speed ascending such as band-type brake, velocity limiter, detects the operating state of band-type brake on-off signal inspection band-type brake; Detect the state of governor switch, judge and when close band-type brake; Judge the test results of car up-running over-speed protection test at last.
The band-type brake control module, the control signal of reception control module, the opening and closing of control towing machine band-type brake.The relay interface module is connected with the interior safety return circuit of control housing, provides and does the safety return circuit of a signal to elevator control cabinet, guarantees experimental set-up in use, and elevator control cabinet can not be controlled elevator operation, warranty test operator's safety.
As a kind of preferred version; On control module, be connected with the expansion equipment interface module; Said expansion equipment interface module includes printer interface, USB interface, velocity feedback interface, and printer interface, USB interface, velocity feedback interface are connected respectively on the control module.Printer interface is supported built-in or external mini-printer, makes in the building site that also printing test is reported easily.The velocity feedback interface, code device signal inserts experimental set-up through this interface, in experimental set-up the parameter of input main frame and elevator after giving birth to ratio, experimental set-up can be exported the information of the actual test run speed of lift car.USB interface can copy in the external mobile memory through the data of USB interface with internal storage, and perhaps external computer is programmed and controlled experimental set-up of the present invention.
As a kind of preferred version; On control module, be connected with the human-machine operation module, said human-machine operation module comprises the button that is used to open and close experimental set-up, the indicator lamp that is used for display power supply, experimental set-up state, test process, each on off state and the loudspeaker of suggesting effect.Button is convenient to startup that the operator controls test, is promptly stopped.Indicator lamp includes fault-indicating lamp, normal indicator lamp, each on off state indicator lamp and test and accomplishes indicator lamp.After experimental set-up powers on, carry out the inspection of internal circuit self check and outward sign earlier.If the inspection of internal circuit self check and outward sign can not be accomplished, then fault-indicating lamp lights, the loudspeaker signal of sounding simultaneously, on the contrary normal indicator lamp lights.In the test, each unit state is normal in the protection device for over-speed ascending, and the switch indicator lamp lights.Behind the completion of test, test is accomplished indicator lamp and is lighted.The human-machine operation module makes the test process full automaticity, presses the beginning button and just begins the full-automatic testing flow process.
As a kind of preferred version; Said experimental set-up also comprises power module; Power module is provided with two input interfaces and is respectively supply regular power interface and emergency source of electrical power interface, and said power module is connected on control module, band-type brake control module and the human-machine operation module.Externally fed provides power supply to internal circuit through power module.The supply regular power interface of power module can use the alternating current 220V mains supply to supply power; The emergency source of electrical power interface, the direct current 12V that can use battery to provide, perhaps direct current 24V, perhaps direct current 48V power supply is supplied power.
As a kind of preferred version; Said protection device for over-speed ascending also includes car bidirectional safety tongs or counterweight safety or wire holder; Said velocity limiter is connected on car bidirectional safety tongs or counterweight safety or the wire holder; On car bidirectional safety tongs or counterweight safety or wire holder, have switch, the switch of this car bidirectional safety tongs or counterweight safety or wire holder is connected on the control module.When velocity limiter moved, velocity limiter triggered wire holder or car safety or counterweight safety action simultaneously; Control module detects the switch on wire holder or car safety or the counterweight safety, judges whether the switch of protection device for over-speed ascending is correct.
Advantage of the present invention is: be applicable to the tracking-driven elevator car protection device for over-speed ascending test of all producers, test operation is safe and reliable, and testing process is simple, one-touch full-automatic testing flow process; The interface that accessory appliances is arranged is supported multi-functional expansion interface and secondary development.
Description of drawings
Fig. 1 is a kind of structural frames view of the present invention;
Fig. 2 is a kind of structural frames view of experimental set-up among the present invention;
Fig. 3 is an another kind of structural frames view of the present invention;
Fig. 4 is the third structural frames view of the present invention;
Fig. 5 is the 4th a kind of structural frames view of the present invention.
The specific embodiment:
Pass through embodiment below, and combine accompanying drawing, technical scheme of the present invention is further described.
Embodiment 1:
The experimental set-up of a kind of car protection device for over-speed ascending of present embodiment; As shown in Figure 1; Comprise elevator control cabinet 1 and protection device for over-speed ascending; Between control housing and protection device for over-speed ascending, be connected with experimental set-up 2, this protection device for over-speed ascending comprises band-type brake 3, velocity limiter 4 and car bidirectional safety tongs 5, has switch respectively on band-type brake, velocity limiter and the car bidirectional safety tongs.As shown in Figure 2; Experimental set-up 2 comprises control module 8, relay interface module 17, band-type brake control module 18; Control module is connected on the elevator control cabinet 1 through relay interface module 17, and control module is connected on the band-type brake 3 through band-type brake control module 8, and the switch on the car bidirectional safety tongs is connected on the control module; Car bidirectional safety tongs and velocity limiter interlock, the switch of velocity limiter is connected on the control module.On control module 8, also be connected with expansion equipment interface module 9, human-machine operation module 10.This expansion equipment interface module has printer interface 14, usb 15,16 3 interfaces of velocity feedback interface; Printer interface, USB interface, velocity feedback interface are connected respectively on the control module; Connect built-in or external microprinting, the external computer of USB interface or other mobile devices on the printer interface.Have the button 19 that is used to open and close experimental set-up on the human-machine operation module, be used for the indicator lamp 20 of display power supply, experimental set-up state, test process, each on off state and the loudspeaker 21 of suggesting effect, wherein indicator lamp comprises that specifically fault-indicating lamp, normal indicator lamp, each on off state indicator lamp and test accomplish indicator lamp.Be connected with power module on the control module, power module is given each parts power supply in the experimental set-up, and this power module also links to each other with human-machine operation module, band-type brake control module.Power module has two interfaces, is respectively supply regular power interface and emergency service interface, and the supply regular power interface is electrically connected with the alternating current 220V city, and the emergency service interface connects battery.
Embodiment 2:
The experimental set-up of a kind of car protection device for over-speed ascending of present embodiment; As shown in Figure 3; Comprise elevator control cabinet 1 and protection device for over-speed ascending, between control housing and protection device for over-speed ascending, be connected with experimental set-up 2, protection device for over-speed ascending is made up of band-type brake 3, velocity limiter 4 and counterweight safety 6 in the present embodiment; Band-type brake is connected on the experimental set-up; Velocity limiter is connected with counterweight safety 5, on band-type brake, velocity limiter and counterweight safety, is respectively arranged with switch, and switch is connected respectively on the experimental set-up.The same among its experimental set-up structure and the embodiment 1.
Embodiment 3:
The experimental set-up of a kind of car protection device for over-speed ascending of present embodiment, as shown in Figure 4, comprise elevator control cabinet 1 and protection device for over-speed ascending; Between control housing and protection device for over-speed ascending, be connected with experimental set-up 2; Protection device for over-speed ascending is made up of band-type brake 3, velocity limiter 4 and wire holder 7 in the present embodiment, and band-type brake is connected on the experimental set-up, and velocity limiter is connected with wire holder 7; On band-type brake, velocity limiter and wire holder 7, be respectively arranged with switch, switch is connected respectively on the experimental set-up.The same among its experimental set-up structure and the embodiment 1.
Embodiment 4:
The experimental set-up of a kind of car protection device for over-speed ascending of present embodiment; As shown in Figure 5, comprise elevator control cabinet 1 and protection device for over-speed ascending, between control housing and protection device for over-speed ascending, be connected with experimental set-up 2; Protection device for over-speed ascending is made up of band-type brake 3, velocity limiter 4 in the present embodiment; Band-type brake is connected on the experimental set-up, on band-type brake, velocity limiter, is respectively arranged with switch, and switch is connected respectively on the experimental set-up.The same among its experimental set-up structure and the embodiment 1.
The control step of the experimental set-up of car protection device for over-speed ascending of the present invention is:
1. the car with elevator is parked in the hoistway bottom, cuts off the elevator main power source, and experimental set-up is connected with elevator control cabinet, velocity limiter and towing machine.
2. the power supply of call through test device.After experimental set-up powers on, carry out the inspection of internal circuit self check and outward sign.If the inspection of internal circuit self check and outward sign can not be accomplished, then fault-indicating lamp lights, the loudspeaker signal of sounding, and this state can not start the up-running over-speed protection test; If internal circuit self check and outward sign have checked, normal indicator lamp lights, and allows to start the up-running over-speed protection test.At this moment, experimental set-up is received the dry contact signal of elevator control cabinet safety return circuit, keeps off-state, guarantees experimental set-up of the present invention in use, and elevator control cabinet can not be controlled elevator operation, warranty test operator's safety.
3. press the unlatching button on the experimental set-up, the test beginning.Control module is sent the band-type brake OPEN and is given the band-type brake control module, and band-type brake control module control band-type brake is opened, and control module confirms through the state of inspection band-type brake switch whether band-type brake is really opened.After the towing machine band-type brake is opened; Owing to the terrestrial gravitation effect, be in the counterweight free fall at elevator hoistways top, and begin upwards to quicken to move by the hoistway bottom through the car of steel rope pulling elevator; Up to reaching governor tripping speed, the governor switch action.If the test elevator has the car protection device for over-speed ascending of wire holder or car bidirectional safety tongs or counterweight safety or said function, these devices can be by the velocity limiter trigger action.After control module receives the governor switch action; And whether the state of switch of checking above-mentioned car protection device for over-speed ascending is correct; Send the band-type brake out code then and give the band-type brake control module; Band-type brake control module control band-type brake is closed, and control module confirms through the state of inspection band-type brake switch whether band-type brake really closes.In the process of the test, if cause specific is arranged, the operator needs interrupt test at once, can press stopping key on the experimental set-up.Stop key be pressed after, stop key and directly cut off the power supply of band-type brake control module, band-type brake is closed; After control module is received the halt switch actuating signal simultaneously, confirm through the state of inspection band-type brake switch whether band-type brake really closes.
4. behind the completion of test, the test on the experimental set-up lights through indicator lamp, and sends aud. snl., and prompting operation person's test is accomplished.
5. remove this experimental set-up, recover the elevator wiring.
Specific embodiment described herein only is that spirit of the present invention is made casehistory.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as control housing, velocity limiter, band-type brake, experimental set-up, wire holder morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; It all is contrary with spirit of the present invention being construed to any additional restriction to them.
Claims (1)
1. the experimental set-up of a lift car protection device for over-speed ascending; Elevator comprises elevator control cabinet and protection device for over-speed ascending; Said protection device for over-speed ascending comprises velocity limiter, is installed in the band-type brake on the elevator traction machine; On band-type brake and velocity limiter, have switch, it is characterized in that: between control housing (1) and protection device for over-speed ascending (22), be connected with experimental set-up (2), said experimental set-up comprises a control module (8); Control module links to each other with elevator control cabinet (1) through a relay interface module (17), and said relay interface module provides the safety return circuit of dry contact signal to elevator control cabinet; Control module (8) links to each other with band-type brake (3) through a band-type brake control module (18); The switch of band-type brake is connected on the control module (8); Said control module being opened or closing through band-type brake control module (18) control band-type brake (3), and receives the operating state of band-type brake on-off signal inspection band-type brake; The switch of said velocity limiter is connected on the control module (8), to the operating state of control module feedback velocity limiter.
2. the experimental set-up of a kind of lift car protection device for over-speed ascending according to claim 1; It is characterized in that on control module (8), being connected with expansion equipment interface module (9); Said expansion equipment interface module includes printer interface (14), USB interface (15), velocity feedback interface (16), and printer interface, USB interface, velocity feedback interface are connected respectively on the control module.
3. the experimental set-up of a kind of lift car protection device for over-speed ascending according to claim 1 and 2; It is characterized in that on control module (8), being connected with human-machine operation module (10), said human-machine operation module comprises the loudspeaker (21) of the button (19) that is used to open and close experimental set-up, the indicator lamp (20) that is used for display power supply, experimental set-up state, test process, each on off state and suggesting effect.
4. the experimental set-up of a kind of lift car protection device for over-speed ascending according to claim 1 and 2; It is characterized in that said experimental set-up (2) also comprises power module (11); Power module is provided with two input interfaces and is respectively supply regular power interface and emergency source of electrical power interface, and said power module is connected on control module (8), band-type brake control module (18) and the human-machine operation module (10).
5. the experimental set-up of a kind of lift car protection device for over-speed ascending according to claim 3; It is characterized in that said experimental set-up (2) also comprises power module (11); Power module is provided with two input interfaces and is respectively supply regular power interface and emergency source of electrical power interface, and said power module is connected on control module (8), band-type brake control module (18) and the human-machine operation module (10).
6. the experimental set-up of a kind of lift car protection device for over-speed ascending according to claim 1 and 2; It is characterized in that said protection device for over-speed ascending (22) also includes car bidirectional safety tongs (5) or counterweight safety (6) or wire holder (7); Said velocity limiter (4) is connected on car bidirectional safety tongs or counterweight safety or the wire holder; On car bidirectional safety tongs or counterweight safety or wire holder, have switch, the switch of this car bidirectional safety tongs or counterweight safety or wire holder is connected on the control module (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010518204A CN102070053B (en) | 2010-10-26 | 2010-10-26 | Test device of elevator car ascending overspeed protection device |
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| CN201010518204A CN102070053B (en) | 2010-10-26 | 2010-10-26 | Test device of elevator car ascending overspeed protection device |
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| CN102070053A CN102070053A (en) | 2011-05-25 |
| CN102070053B true CN102070053B (en) | 2012-10-10 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103193126B (en) * | 2013-04-11 | 2015-08-26 | 中国特种设备检测研究院 | A kind of ascending for elevator pilot system |
| CN104909236B (en) * | 2015-05-23 | 2018-01-12 | 河南省特种设备安全检测研究院商丘分院 | A kind of portable up-running over-speed protection tester for permanent magnetic synchronous traction machine elevator |
| CN105480809B (en) * | 2015-12-29 | 2018-09-21 | 上海新时达电气股份有限公司 | The test method of protection device for over-speed ascending for elevator |
| US10745244B2 (en) | 2017-04-03 | 2020-08-18 | Otis Elevator Company | Method of automated testing for an elevator safety brake system and elevator brake testing system |
| CN106986247A (en) * | 2017-04-19 | 2017-07-28 | 安徽固特福电子科技有限公司 | elevator traction performance testing device |
| CN107840219B (en) * | 2017-11-21 | 2024-09-27 | 广州广日电气设备有限公司 | Band-type brake coil control circuit and method, band-type brake control power supply equipment and elevator |
| CN109900506A (en) * | 2019-03-13 | 2019-06-18 | 中山职业技术学院 | A two-way speed limiter and two-way safety gear linkage test device |
| CN111453577A (en) * | 2020-04-23 | 2020-07-28 | 巨人通力电梯有限公司 | Elevator ascending overspeed testing method |
| CN112830360B (en) * | 2021-02-25 | 2024-05-31 | 深圳市质量安全检验检测研究院 | Test device and test method for elevator car uplink overspeed protection |
| CN113651204B (en) * | 2021-08-30 | 2022-10-11 | 浙江省特种设备科学研究院 | A no-load compensation method elevator progressive safety gear detection method and device |
| CN117303154B (en) * | 2023-11-29 | 2024-02-20 | 菱王电梯有限公司 | Elevator safety gear linkage test device, system and safety gear test method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1375407A1 (en) * | 2002-06-24 | 2004-01-02 | LTF Liften B.V. | Safety brake for hoisting device |
| JP2005194066A (en) * | 2004-01-08 | 2005-07-21 | Mitsubishi Electric Corp | Control device of elevator |
| CN101096252A (en) * | 2006-06-30 | 2008-01-02 | 东芝电梯株式会社 | Control device for elevator up-running over-speed protection and control method |
| CN201002902Y (en) * | 2006-06-30 | 2008-01-09 | 东芝电梯株式会社 | Control device used for elevator overspeed protective device |
-
2010
- 2010-10-26 CN CN201010518204A patent/CN102070053B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1375407A1 (en) * | 2002-06-24 | 2004-01-02 | LTF Liften B.V. | Safety brake for hoisting device |
| JP2005194066A (en) * | 2004-01-08 | 2005-07-21 | Mitsubishi Electric Corp | Control device of elevator |
| CN101096252A (en) * | 2006-06-30 | 2008-01-02 | 东芝电梯株式会社 | Control device for elevator up-running over-speed protection and control method |
| CN201002902Y (en) * | 2006-06-30 | 2008-01-09 | 东芝电梯株式会社 | Control device used for elevator overspeed protective device |
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Address after: 310019 No. nine, 28 Ring Road, Hangzhou, Zhejiang, Jianggan District Patentee after: Otis Electrical Elevator Co., Ltd. Address before: 310019 No. nine, 28 Ring Road, Hangzhou, Zhejiang, Jianggan District Patentee before: Xizi Otis Elevator Co., Ltd. |