CN102275792B - Braking device of machine room-less elevator car and working method thereof - Google Patents
Braking device of machine room-less elevator car and working method thereof Download PDFInfo
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- CN102275792B CN102275792B CN 201110188682 CN201110188682A CN102275792B CN 102275792 B CN102275792 B CN 102275792B CN 201110188682 CN201110188682 CN 201110188682 CN 201110188682 A CN201110188682 A CN 201110188682A CN 102275792 B CN102275792 B CN 102275792B
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Abstract
The invention discloses a braking device of a machine room-less elevator and a working method thereof, which not only can ensure enough pit safety space in the case of accident, but also can protect the relevant components of the elevator from damage, belonging to the field of elevators. A braking device is arranged on the lower part of the shaft wall, and comprises a mounting seat, a hinge pin, a braking plate and braking switches I, II and III, wherein the braking plate is movably connected with the mounting seat through the hinge pin; the braking switch I is fixedly arranged on the shaft wall; the braking switch II is fixedly arranged on the mounting seat; the braking switch III is arranged on the top surface of the outer end of the braking plate; when the braking plate is attached to the shaft wall, the car can pass freely; and when the braking plate is opened for 90 degrees, the car realize a mechanical limit function. According to the invention, the braking device brakes the car so that the distance between the ground in the pit operation field and the lowest component of the car is greater than 2 m; and the braking device has three working states: stopping position state, transition state (namely leaving the parking position but not reaching the working position), and working position state.
Description
Technical field
The present invention relates to the elevator field, relate in particular to safety guard and method of work thereof in the machine-roomless lift maintenance system.
Background technology
Along with the development of fabric structure towards the variety direction, for saving the space, machine-roomless lift has arisen at the historic moment in some building.The driving main frame of machine-roomless lift is arranged in pit, and it has saved traditional elevator(lift) machine room.By this design, saved space, reduced building cost, avoided building structure complicated, make whole building handsome in appearance.Be arranged in the machine-roomless lift pit working space of pit for the driving main frame, in the standard GB/T 7588-2003 of China " elevator manufacturing and installation safety standard ", do not have clear and definite requirement, but need mobile car in the maintenance and inspection work.When particularly the parts such as drg, traction sheave, suspension strop being carried out large repairs or when checking, car has the possibility of sliding or falling, and owing to being subjected to the impact of pit usage space, may the operating personnel who stand in the pit be impacted or personal injury if car produces accidental movement.For preventing the generation of above-mentioned situation, a lot of elevator manufacturers have proposed multiple solution, as: " a kind of Non-machine room lift car stopping device; ZL200920062330.8 ", it discloses a kind of position limiting structure of Telescopic shaft type, prevent the accidental movement of car, but it must cut off the elevator power supply when using.Obviously this technical scheme can't satisfy overhaul, the inspection work to machine-roomless lift.What can also use for reference is: the disclosed technical scheme of patent application of " elevator reparing fender guard, 201010564779.1 "; it is in order to carry out personnel protection to maintainer in the pit; in pit, be provided with strut member and damper element; adopt the theory of mechanical position limitation to protect; can in maintenance, carry out controlled operation to car; out of control or accidental movement appears such as car; its strut member and damper element can guarantee between car bottom surface and the pit bottom surface certain height is arranged, and then the personal safety of protection service personnel.But be not difficult to find out, this technical scheme belongs to pure mechanical stop means, and when stop realized, associated components still may in operation, can produce adverse influence to elevator integral body.
Summary of the invention
The present invention is directed to above problem, provide a kind of and left enough pit survival spaces in maintenance, can guarantee accident to occur the time, can guarantee again stopping device and the method for work thereof of the machine-roomless lift car that the associated components of elevator can be not impaired.
Technical scheme of the present invention is: the hoistway bottom of described cage operation is provided with the pit for maintenance, described stopping device has control circuit, described control circuit comprises mainboard input circuit, overhauling elevator circuit and safety contactor control loop, described safety contactor control loop comprises coil and control contact, and described control contact connects mainboard;
The inwall of cheating the hoistway of end 2-2.5 rice apart from pit in the inwall bottom of described hoistway is provided with stopping device, and described stopping device comprises mount pad, bearing pin, stop plate and stop switch one ~ three; Described stop plate is flexibly connected by described bearing pin and the described mount pad that vertical arranges, described stop switch one is fixedly installed on the inwall of hoistway, described stop switch two is fixedly installed on the mount pad, when described stop plate rotates the inwall of applying hoistway, can trigger described stop switch one, open when described stop plate rotates 90 ° and can trigger described stop switch two; Described stop switch three is arranged on the end face of described stop plate outer end; Described car can have free passage during the inwall of described stop plate applying hoistway, when described stop plate is opened 90 ° described car is realized the mechanical position limitation effect;
Described stop switch one and stop switch two are connected in parallel, and link to each other with described coil again, control described coil, and then by controlling the contact to described mainboard incoming signal;
Described stop switch three connects described mainboard.
Described overhauling elevator circuit comprises the cage top overhauling circuit, and described cage top overhauling circuit comprises cage top overhauling switch, up button one and descending button one;
Described cage top overhauling switch is the two-way gang switch, and one the tunnel connects described mainboard; Another road connects respectively described up button one and descending button one, and described up button one is connected with descending button and is connected respectively mainboard;
Described control circuit also comprises the maintenance commutation circuit, and the maintenance commutation circuit comprises reset switch, up button two and descending button two; Described reset switch is connected in the described overhauling elevator circuit, is used for changing between the normal operation of elevator and inspection travel, and described reset switch is the two-way gang switch, and a road of outlet connects described cage top overhauling switch; Another road of outlet connects respectively described up button two and descending button two, and described up button two is connected with descending button and is connected respectively mainboard again.
Method of work of the present invention, carry out according to the following steps:
1), before lower pit, move reset switch, make elevator be in the inspection travel pattern;
2), enter pit, described stop plate is rotated 90 ° by the inner wall position of applying hoistway, to cheating service work position, the end; Be that stop switch one is disconnected, stop switch two closes;
In the course of action, the stop plate leaves stop switch one on the inwall of hoistway, does not trigger in the process of stop switch two, relay electric-loss, and elevator integral body is in stopped status;
3), after stop switch two work, the stop plate is in the position that can support car, at this moment, when check, when maintenance work needs mobile car, can be by operating up button two or descending button two control cars move up and down;
4), check, maintenance is complete, described stop plate is allocated to the inner wall position of applying hoistway, stop switch two is disconnected, stop switch one closes, personnel leave pit; The action reset switch makes elevator be in normal operation mode, and is complete.
Car machine made stop device take elevator pit as Active workings of the present invention comes the stop car by the stopping device that an electromechanical is set at guide rail (inwall of hoistway), makes the interior ground of pit Active workings and the distance between the minimum parts of car more than 2m; This stopping device has three kinds of mode of operations, i.e. stand state, transition condition (namely leave stand but not yet enter control position), control position state.
When being in the stand state (inner wall position of applying hoistway), this elevator can normally move;
(leave stop switch one on the inwall of hoistway, do not trigger in stop switch two processes) when in an interim state, because the contactless switch of safety return circuit can not adhesive, then the normal operation of this elevator and inspection travel all can not carry out.
When being in control position (the 90 ° of positions of performing fighting), stopping device is connected the safety return circuit that disconnected when it left stand just now, owing to before entering pit, reset switch switched to the pit overhaul pattern, so just can guarantee to implement inspection travel when elevator is in inspecting state.
When stopping device stop car of the present invention, stop switch three has cut off the contact of lower limit to the signal of mainboard entrance point, so just can avoid when this stopping device stop car, if there is maloperation, continue maintenance descending, car is because the effect of stopping device no longer continues descendingly, and towing machine then can work on, the phenomenon that causes steel rope to slide at traction sheave, thereby the wearing and tearing of aggravation steel rope.For this reason, the present invention is provided with stop switch three at stop plate outer end end face, in case the stop switch three of stop plate top surface is triggered in the car bottom surface, then descending function then can not be carried out, and has so just thoroughly avoided aforementioned towing machine work on, the wear and tear problem of steel rope.
In addition, a commutation circuit with reset switch is set outside hoistway, when needs carried out operation in pit, the action reset switch guaranteed that elevator can not move automatically.When finishing in pit after the operation, this switch that only outside hoistway, resets, elevator just can return to the state of normal operation.
In sum, stopping device of the present invention can further improve the safety of upkeep operation, and in preventing from overhauling to the damage of elevator components.
Description of drawings
Fig. 1 is structural representation of the present invention,
1 is hoistway among the figure, the 2nd, and car, the 3rd, stop plate, the 4th, ground, the 5th, pit, the 30th, the applying position of stop plate;
Fig. 2 is the birds-eye view of Fig. 1;
Fig. 3 is A place enlarged drawing among Fig. 1,
10 is inwalls of hoistway among the figure, the 31st, and bearing pin, the 32nd, mount pad, the 33rd, stop switch two, 34th, stop plate, the 35th, stop switch three;
Fig. 4 is B place partial enlarged drawing among Fig. 2,
36 is stop switches one among the figure;
Fig. 5 is local control circuit of the present invention schematic diagram,
FW is reset switch among the figure, and JX is the cage top overhauling switch, and SX1 is up button one, and XX1 is descending button one, SX2 is up button two, and XX2 is descending button two, and ZT1 is stop switch one, ZT2 is stop switch two, and ZT3 is stop switch three, and JY is safety contactor.
The specific embodiment
The present invention is as Figure 1-3: hoistway 1 bottom of described car 2 operations is provided with the pit 5 for maintenance, described stopping device has control circuit, described control circuit comprises mainboard input circuit, overhauling elevator circuit and safety contactor JY control loop, described safety contactor JY control loop comprises coil and the control contact of being controlled by described coil, and described control contact connects mainboard;
The inwall 10 of cheating the hoistway of end 2-2.5 rice apart from pit 5 in inwall 10 bottoms of described hoistway is provided with stopping device, and described stopping device comprises mount pad 32, bearing pin 31, stop plate 34 and stop switch one ~ 3 36,33,35; Described stop plate 3 is flexibly connected with described mount pad 32 by the described bearing pin 31 that vertical arranges, described stop switch 1 is fixedly installed on the inwall 10 of hoistway, described stop switch 2 33 is fixedly installed on the mount pad 32, when described stop plate 3 rotates the inwall 10 of applying hoistway, can trigger described stop switch 1, open when described stop plate 3 rotates 90 ° and can trigger described stop switch 2 33; Described stop switch 3 35 is arranged on the end face of described stop plate 3 outer ends; Described car 2 can have free passage during the inwall 10 of described stop plate 3 applying hoistways, when described stop plate 3 is opened 90 ° described car 2 is realized the mechanical position limitation effects;
Described stop switch one 36 ZT1 and stop switch two 33ZT2 are connected in parallel, and link to each other with described coil again, and control described coil, and then by controlling the contact to described mainboard incoming signal (namely to the motor-driven and motionless signal instruction of mainboard input control traction); Can not move in stop plate 3 transition period elevator integral body with realization, to guarantee the safety when operating.
Described stop switch 3 35 connects described mainboard; In case stop switch three is triggered, namely send the instruction that lift car can not move again downwards to mainboard.
Described overhauling elevator circuit comprises the cage top overhauling circuit, and described cage top overhauling circuit comprises cage top overhauling switch JX, up button one SX1 and descending button one XX1;
Described cage top overhauling switch JX is the two-way gang switch, and one the tunnel connects described mainboard; Another road connects respectively described up button one SX1 and descending button one XX1, and described up button one SX1 is connected XX1 and is connected respectively mainboard again with descending button;
Described control circuit also comprises the maintenance commutation circuit, and the maintenance commutation circuit comprises reset switch FW, up button two SX2 and descending button two XX2; Described reset switch FW is connected in the described overhauling elevator circuit, be positioned at before the aforementioned cage top overhauling switch JX, be used for changing between the normal operation of elevator and inspection travel, described reset switch FW is the two-way gang switch, and a road of outlet connects described cage top overhauling switch JX; Another road of outlet connects respectively described up button two SX2 and descending button two XX2, and described up button two SX2 are connected XX2 and are connected respectively mainboard again with descending button.Need to prove especially: descending button two XX2 can only generation effect when stop switch three is not triggered, in case stop switch three is triggered, descending button two XX2 namely can not the generation effect.
By reference to the accompanying drawings 5, further specify aforementioned circuit, when reset switch FW is in gear and cage top overhauling switch JX and is in gear, i.e. described elevator normal operation mode herein.The straight-through mainboard of signal this moment.
Inspection travel pattern herein has two kinds in fact: the one, and reset switch FW is in gear, when cage top overhauling switch JX is in lower gear, is the cage top overhauling operational mode; When cage top overhauling, elevator can connect mainboard by up button one SX1() and descending button one XX1(connect mainboard) control respectively the up, descending of elevator.
The 2nd, it is pit overhaul operational mode (this moment cage top overhauling switch JX without task) that reset switch FW is in lower gear, and up button two SX2(connect mainboard), descending button two XX2(connect mainboard) control respectively the up, descending of elevator; But, because the effect of the stop switch one ~ three set up of the present invention, so that stop switch three (ZT3) is when being triggered, descending can't the operation; Between moving period (stop switch one is to the gap of stop switch two switchings), elevator is in state out of service at the stop plate.
Method of work of the present invention, carry out according to the following steps:
1), before lower pit, stir FW downwards among action reset switch FW(such as Fig. 5), make elevator be in the inspection travel pattern;
2), enter pit, described stop plate is rotated 90 ° by the inner wall position of applying hoistway, to cheating service work position, the end; Be that stop switch one is disconnected, stop switch two closes;
In the course of action, the stop plate leaves stop switch one on the inwall of hoistway, does not trigger in the process of stop switch two, relay electric-loss, and elevator integral body is in stopped status;
3), after stop switch two work, the stop plate is in the position that can support car, at this moment, when check, when maintenance work needs mobile car, can be by operating up button two or descending button two control cars move up and down;
4), check, maintenance is complete, described stop plate is allocated to the inner wall position of applying hoistway, stop switch two is disconnected, stop switch one closes, personnel leave pit; Action reset switch FW makes elevator be in normal operation mode, and is complete.
Principle of work of the present invention is: when machine-roomless lift need to check at pit, during maintenance activity, outside hoistway 1, stir first reset switch FW, after entering the pit 5 that is lower than ground 4, stir stop plate 3 away from stand, after rotating 90 °, make stop plate 3 be in control position, disconnect simultaneously ZT1, connect ZT2.When in inspection, maintenance work, needing to move, only need press XX1, SX1 can realize the operation of the maintenance uplink and downlink of elevator in case the bottom surface of car 2 contacts with stop plate 3, namely disconnecting stop switch three ZT3, elevator traction machine must not connect electricity to down direction, only can connect electricity to up direction.When inspection, when the maintainer fulfils assignment, the maintenance and inspection personnel need to stir stop plate 3, make it return stand (inner wall position of the hoistway of namely fitting) by control position, disconnect simultaneously ZT2, connect ZT1, after personnel leave pit, outside hoistway, move reset switch FW, make elevator recover normal operating condition.
Claims (3)
1. the stopping device of a machine-roomless lift car, the hoistway bottom of described cage operation is provided with the pit for maintenance, described stopping device has control circuit, described control circuit comprises mainboard input circuit, overhauling elevator circuit and safety contactor control loop, described safety contactor control loop comprises coil and control contact, and described control contact connects mainboard;
It is characterized in that, the inwall of cheating the hoistway of end 2-2.5 rice apart from pit in the inwall bottom of described hoistway is provided with stopping device, and described stopping device comprises mount pad, bearing pin, stop plate and stop switch one ~ three; Described stop plate is flexibly connected by described bearing pin and the described mount pad that vertical arranges, described stop switch one is fixedly installed on the inwall of hoistway, described stop switch two is fixedly installed on the mount pad, when described stop plate rotates the inwall of applying hoistway, can trigger described stop switch one, open when described stop plate rotates 90 ° and can trigger described stop switch two; Described stop switch three is arranged on the end face of described stop plate outer end; Described car can have free passage during the inwall of described stop plate applying hoistway, when described stop plate is opened 90 ° described car is realized the mechanical position limitation effect;
Described stop switch one and stop switch two are connected in parallel, and link to each other with described coil again, control described coil, and then by controlling the contact to described mainboard incoming signal;
Described stop switch three connects described mainboard.
2. the stopping device of a kind of machine-roomless lift car according to claim 1 is characterized in that, described overhauling elevator circuit comprises the cage top overhauling circuit, and described cage top overhauling circuit comprises cage top overhauling switch, up button one and descending button one;
Described cage top overhauling switch is the two-way gang switch, and one the tunnel connects described mainboard; Another road connects respectively described up button one and descending button one, and described up button one is connected with descending button and is connected respectively mainboard;
Described control circuit also comprises the maintenance commutation circuit, and the maintenance commutation circuit comprises reset switch, up button two and descending button two; Described reset switch is connected in the described overhauling elevator circuit, is used for changing between the normal operation of elevator and inspection travel, and described reset switch is the two-way gang switch, and a road of outlet connects described cage top overhauling switch; Another road of outlet connects respectively described up button two and descending button two, and described up button two is connected with descending button and is connected respectively mainboard again.
3. the method for work of the stopping device of the described machine-roomless lift car of claim 1 is characterized in that, carries out according to the following steps:
1), before lower pit, move reset switch, make elevator be in the inspection travel pattern;
2), enter pit, described stop plate is rotated 90 ° by the inner wall position of applying hoistway, to cheating service work position, the end; Be that stop switch one is disconnected, stop switch two closes;
In the course of action, the stop plate leaves stop switch one on the inwall of hoistway, does not trigger in the process of stop switch two, relay electric-loss, and elevator integral body is in stopped status;
3), after stop switch two work, the stop plate is in the position that can support car, at this moment, when check, when maintenance work needs mobile car, can be by operating up button two or descending button two control cars move up and down;
4), check, maintenance is complete, described stop plate is allocated to the inner wall position of applying hoistway, stop switch two is disconnected, stop switch one closes, personnel leave pit; The action reset switch makes elevator be in normal operation mode, and is complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110188682 CN102275792B (en) | 2011-07-07 | 2011-07-07 | Braking device of machine room-less elevator car and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110188682 CN102275792B (en) | 2011-07-07 | 2011-07-07 | Braking device of machine room-less elevator car and working method thereof |
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| Publication Number | Publication Date |
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| CN102275792A CN102275792A (en) | 2011-12-14 |
| CN102275792B true CN102275792B (en) | 2013-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110188682 Expired - Fee Related CN102275792B (en) | 2011-07-07 | 2011-07-07 | Braking device of machine room-less elevator car and working method thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514993A (en) * | 2011-12-28 | 2012-06-27 | 江南嘉捷电梯股份有限公司 | Safety device for elevator maintenance |
| CN106744141A (en) * | 2017-01-23 | 2017-05-31 | 菱王电梯股份有限公司 | Prevent elevator accidental movement embraces rope device control circuit |
| CN108483180A (en) * | 2018-05-23 | 2018-09-04 | 苏州台菱电梯有限公司 | A kind of movement of elevator stops stop device |
| EP3587324A1 (en) * | 2018-06-22 | 2020-01-01 | Otis Elevator Company | Elevator system |
| CN108726301B (en) * | 2018-06-27 | 2020-06-05 | 陈少洋 | Shallow pit elevator |
| JP7429088B2 (en) | 2021-06-15 | 2024-02-07 | 三菱電機株式会社 | Elevators and their pit work auxiliary equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644479A (en) * | 2005-01-07 | 2005-07-27 | 陈金林 | Controller and controlling method for preventing elevator from harming event |
| CN201313772Y (en) * | 2008-10-22 | 2009-09-23 | 杭州奥立达电梯有限公司 | Gearless elevator without machine room |
| CN202124381U (en) * | 2011-07-07 | 2012-01-25 | 江苏通用电梯有限公司 | Brake device for machine room less elevator lift car |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007062852A (en) * | 2005-08-29 | 2007-03-15 | Toshiba Elevator Co Ltd | Elevator maintenance operation device |
| JP5066899B2 (en) * | 2006-11-24 | 2012-11-07 | 三菱電機株式会社 | Elevator car ventilation system for disaster response |
-
2011
- 2011-07-07 CN CN 201110188682 patent/CN102275792B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644479A (en) * | 2005-01-07 | 2005-07-27 | 陈金林 | Controller and controlling method for preventing elevator from harming event |
| CN201313772Y (en) * | 2008-10-22 | 2009-09-23 | 杭州奥立达电梯有限公司 | Gearless elevator without machine room |
| CN202124381U (en) * | 2011-07-07 | 2012-01-25 | 江苏通用电梯有限公司 | Brake device for machine room less elevator lift car |
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| CN102275792A (en) | 2011-12-14 |
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