CN100572245C - The emergency braking apparatus of lift car - Google Patents
The emergency braking apparatus of lift car Download PDFInfo
- Publication number
- CN100572245C CN100572245C CNB2006800028316A CN200680002831A CN100572245C CN 100572245 C CN100572245 C CN 100572245C CN B2006800028316 A CNB2006800028316 A CN B2006800028316A CN 200680002831 A CN200680002831 A CN 200680002831A CN 100572245 C CN100572245 C CN 100572245C
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- CN
- China
- Prior art keywords
- emergency braking
- speed
- wheels
- braking apparatus
- guide rail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/06—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
Abstract
The present invention proposes a kind of emergency braking apparatus of lift car, and the sensor (11) of measuring car speed has the mechanism (13) that is used to discern excessively high speed, and this mechanism is with electric mode control brake device.Advise in order reliably to grasp elevator car speed, in order to measure the wheel (9) that described speed is provided with two guide rails that recline (2).Each is taken turns the revolution of (9) and is measured by sensor (11) independently, and wherein, when excessively high speed was found in one of them sensor (11) report, this mechanism (13) triggered emergency braking.These two wheels (9) can be in the supported on both sides of a guide rail (2) on the fork (10) that a swing is supported, fork (10) with eccentric manner by spring (15) pretension.How also described operation of braking means power can strengthen by roller mechanically.
Description
Technical field
The present invention relates to be used for the emergency braking apparatus of lift car.
Background technology
Elevator is equipped with brake equipment or safety tongs, is used for not allowing under the too high situation in ground in speed, and for example under the high speed that when control fault or hoist cable fracture, occurs, the stop elevator car.
In known this device, start brake equipment or safety tongs by the velocity limiter that is fixedly mounted in hoistway or the machine room, when elevator cage operation, will impel velocity limiter to rotate.For this reason, be provided with the speed limit rope of a closure, it one walk around velocity limiter (usually in hoistway extreme higher position), tension wheel (extreme lower position in hoistway usually) is walked around in the other end.The speed limit rope is connected with the brake equipment or the safety tongs of lift car at the three unities, thereby is driven when elevator cage operation.If speed is too high, velocity limiter locking speed limit rope then, the result, brake equipment or safety tongs are triggered and stop elevator car thus.
The advantage of this structure is that it is mechanically worked merely, therefore the influence that can not be had a power failure.
But it has many shortcomings.On the one hand, it is out of order easily, and this mechanically works merely because of it exactly.If it becomes very dirty, then centrifugal pendulum only can just trigger (promptly only exceed in speed and just trigger when a lot) very late.
Another shortcoming is that cost is high relatively.Cast aside real brake equipment and do not talk, need the rope of a rhizosphere in the whole hoistway scope, it must be directed at two up and down, also must be tensioned.
Another shortcoming is that the solution of this machinery is only made a response when exceeding predetermined speed.Concerning present express elevator, this is normally not enough.This elevator is with the operation of the speed of for example 10 meter per seconds, so it must in time be braked before arriving final (top or the end) floor.If it is descending that lift car is at the second layer, then have only the speed of 5 meter per seconds also too high, thereby should trigger emergency braking.
In order to trigger emergency braking discriminatively, the solution of electronics is more suitable.Also the someone has proposed corresponding scheme.The US5 that belongs to same type, 020,640A discloses a kind of brake device for elevator, and wherein the speed of lift car is measured by drive wheel, and the hoist cable moving is on this drive wheel.
Following problem has appearred in this known devices, promptly when rope ruptures, and this failure of apparatus.Another shortcoming is, needs (at least) one to extend additional wires to machine room from lift car, is used for the rotating speed of drive wheel is transferred to lift car.
US5,366,045A discloses a kind of shelf Handling device, and one of them support arm liftably is placed on the roofbolt, and is provided with a brake equipment of reacting when support arm speed is too high.In addition, be provided with a wheel that links to each other with revolution counter, this is taken turns and is attached on the roofbolt.This revolution counter is connected with a mechanism that is used to measure excessively high speed, and this mechanism starts described brake equipment.
This solution is safe and reliable inadequately for elevator.Grease sticks on the wheel probably, and result's wheel skids on roofbolt, and then when rope ruptured, revolution counter can not reported at a high speed yet.
US6,161,653 disclose a kind of elevator with electric trigger-type brake equipment or safety tongs.Trigger for electricity, adopt any one known speed sensor of structure, this is unspecified.
At last, JP-A-01317977 discloses a kind of elevator, and itself adopts sensing system, and this sensing system is made of two wheels that roll on different opposed guide rails, the described sensor that drives oneself respectively of taking turns.This solution has been considered following situation, has been determined by vibration, tolerance etc., and one of two wheels temporarily do not contact guide rail well, does not therefore roll with the speed of effective representative elevator car speed.This problem is so revised aspect signal, promptly generally signal is assessed, and the higher signal that only is useful on fair speed is considered to typical value.
Summary of the invention
The objective of the invention is to avoid these defectives, a kind of emergency braking apparatus of the above-mentioned type is provided, wherein guaranteed to measure the grasp elevator car speed, especially should eliminate the unreliability in the zone of the wheel that produces speed signal as far as possible, and whole emergency braking apparatus can be installed in the elevator cab area, the result does not need the connection to machine room.
The invention provides a kind of emergency braking apparatus of lift car, this lift car in hoistway along guide rail operation and can be by the steel rope lifting, wherein be provided with a sensor that is used to measure car speed and has the mechanism that is used to discern excessively high speed, this mechanism is with electric mode control brake device, for measuring speed is provided with two wheels, described two wheels so abut on the guide rail, promptly a wheel abuts on the wherein side of this guide rail rail head, another is taken turns on the opposite side that abuts in this guide rail rail head, revolution that each is taken turns or rotating speed are independently by sensor measurement, in case and one of them sensor report excessively high speed, then this mechanism triggers emergency braking.
The measure of passing through to be proposed has guaranteed, on the one hand, even if when rope ruptures, still can measure the speed of lift car, and this is because velocity measurement and hoist cable are irrelevant.In addition, two wheels of configuration have not only brought following advantage in the both sides of same guide rail, promptly can compare the speed of these two wheels mutually, may occur skidding and reporting fault so can find one of to take turns for two, and elevator behind end of run by locking.And in this way, avoided one of them to take turns at the very start and had faint wipe contact and thereby provide disabled signal.Because two inswept same guide rails of wheel have determined its good frictional fit of temporary transient forfeiture so got rid of one of two wheels by guide rail mutual spacing tolerance., under opposite extreme situations very, also can have influence on wheel from the vibration or the similar interference of lift car here, this is because wheel itself is opposite on the different both sides of same guide rail, thereby we can say guide rail is come between them.But be noted that when having only a wheel report to find excessively high speed, triggered emergency braking certainly.
Preferably, described two wheels are swung on the fork that supports at one in the supported on both sides of a guide rail, and wherein this fork is by the spring pretension.By with also coming the pretension fork by quite weak spring, the quite high thrust of two wheels will be obtained.It is fixed that this is come by following condition, promptly the distance between two rollers only can be selected as slightly the rail head width greater than guide rail, and spring can be from distant ground of the fork center of oscillation application of force, this center of oscillation is suitably between these two wheels, as a result, owing to moment balance has realized that two rollers are pressed on the guide rail quite tightly.
Preferably, respectively have two wheels that are supported on the fork to abut on two mutual opposed guide rails, wherein per two wheels that abut on the different guide rails interconnect by axle.Obtain following advantage by this measure, promptly in fact got rid of and skidded, this be because, when having only these two one of to take turns when skidding by axle is interconnective, another wheel drive shaft, here, friction is enough to make wheel to roll.Thus one, one of them is taken turns and can skid, but can not have influence on the measurement of elevator car speed.
Preferably, one among two axles is imported into a pipe, this pipe links to each other with this brake equipment, wherein should disconnect by pipe, the two ends in opposite directions of two pipeline sections of this pipe interconnect rotationally by the U section bar is anti-, a push rod is supported in the leg of described U section bar, this push rod bear spring power and overcome under the situation of this action of the spring by one with for example moving that the described mechanism that is used for the control brake device links to each other for solenoidal operating parts, an off-centre is supported on this push rod, the friction wheel that can not fix touches another friction wheel that is positioned on this with moving axially.Obtain following advantage by this measure, promptly connecting two axles that remain in the wheel in the different forks can start brake equipment by pipe under the corresponding control of operating mechanism.This also is a kind of servo supporting mechanism, draws energy in its trailing wheel.In addition, this operating mechanism can be made of screw actuator, and screw actuator is under the brake component triggering situation, promptly when elevator car speed is too high, be switched on, thereby spring makes friction wheel enter such position in the no current mode, on this position, it touches and this anti-friction wheel that is rotatedly connected.Support this friction wheel by off-centre, the clamping of two friction wheels occurs, the U section bar is connected and the drive of quilt axle with axle.As a result, the rotation of pipe and the startup of brake equipment have appearred.
But, the shortcoming of this solution is that the length of axle and the length of pipe must be matched with the width (the perhaps spacing of guide rail) of lift car.
If people want to avoid this shortcoming, then can take following measure: for described two guide rails, the controller Be Controlled of this brake equipment by separately, for example the controlling by the described mechanism that is used for the control brake device jointly of wherein said controller for the operating parts of electromagnet., brake component separately, that act on each guide rail can be set here, described brake component is subjected to the control of operating mechanism, and operating mechanism is controlled jointly.
Description of drawings
Now, describe the present invention in conjunction with the accompanying drawings in detail, wherein:
Fig. 1 schematically illustrates the one-point drawing of the sensor of the present invention that is used for the detecting elevator car speed;
Fig. 2 schematically illustrates sensor shown in Figure 1;
Fig. 3 schematically illustrates the sensor of Fig. 1 and is used for operation of braking means mechanism with one-point drawing;
The lead agency of Fig. 4 presentation graphs 3;
Fig. 5 schematically illustrates the trigger mechanism that is used for brake equipment;
Fig. 6 schematically illustrates another embodiment of the trigger mechanism that is used for brake equipment.
The specific embodiment
As shown in Figure 1, guide rail 2 has by web 6 and the flange of rail 7 bonded assembly rail heads 8.
As shown in Figure 2, fork 10 can swingingly be placed between two wheels 9 and the power of bearing spring 15 around axle 14, and this spring is supported on the unshowned bearing and is used to make fork 10 to rotate, and then will take turns 9 and be pressed on two sides 16 of rail head 8.Because only distant less than the point of application of the width of rail head 8 and spring 15 slightly from the axle 14 of fork 10 at the clear distance of two wheels between 9, thus produced corresponding leverage, even spring 15 a little less than, also can obtain high wheel 9 thrusts.
In the embodiment shown in fig. 3, two wheels 9 that on each of two guide rails 2, respectively reclined, the described wheel remains in the fork 10.At this moment, each two wheels 9 that abut on the different guide rails 2 are rotationally connected by an axle 17,17 ' phase transreactance respectively, and described axle is centered on by a sensor 11 respectively again.At this moment, sensor 11 for example sends pulse when axle 17 revolutions moving enclose.
In addition, axle 17 ' is centered on by a pipe 18, and this pipe is divided into pipeline section 18 ', 18 ", here, these two pipeline sections 18 ', 18 " interconnect by a U section bar 19.In addition, a sensor 11 is between two legs of U section bar 19.
Shown in Fig. 4 is detailed, between two legs of U section bar 19, friction wheel 22 anti-being installed in rotationally on the axle 17 '.This friction wheel and 20 collaborative works of another friction wheel, described another friction wheel axle to not removable but remain on rotationally on the push rod 21 (perhaps, push rod 21 also is rotary certainly, thus friction wheel 20 can resist be installed in rotationally on the push rod 21).
Shown in, on friction wheel 20 positions corresponding to normal operation, screw actuator 23 is kept friction wheel 20 not contact frictions wheel 22 by excitation and the power ground that overcomes spring 25.As a result, the position of pipe 18 remains unchanged.
If but screw actuator 23 is gone excitation, for example owing to measure too high elevator car speed (perhaps under power failure and emergency service situation), then spring 25 forces push rod 21 to move to right, the result, and friction wheel 20 touches friction wheel 22 and is driven rotation by friction wheel 22.Because friction wheel 20 is eccentric installations, so the clamping of friction wheel 20 occurred, this is because the distance between axle 17 ' and the push rod 21 is to set according to the minor increment between friction wheel 20 outer peripheral faces and its eccentrically weighted shaft.As a result, U section bar 19 is driven, thereby forces pipe 18 to rotate.
Because pipe 18 or pipeline section 18 ', 18 " captive joint (see figure 3) with lever 27; and wherein this lever links to each other with the joystick 28 that acts on unshowned, as to act on guide rail 2 brake equipment again; in this case, brake equipment is activated, and lift car is by stop.
In Fig. 5, schematically illustrated another embodiment of the trigger mechanism that is used for brake equipment., be provided with an axle 30 here, it and contact pin 31 are rigidly connected, and this contact pin and electromagnet 23 ' cooperating and retracing spring 32 are applied to it.Axle 30 at both endss are connected with lever 27, and described lever links to each other with joystick 28, and this joystick acts on unshowned brake equipment.
As long as electromagnet is by excitation, axle 30 and lever 27 just remain on one and do not start on brake equipment and the out-of-run position.If electromagnet 23 ' is gone excitation, then retracing spring 32 force axle 30 and and then lever 27 rotate, thus and then started brake equipment and stop elevator car.
In embodiment according to Fig. 6, can on one of them leg 40 of the toggle link 41 that axle 42 rotates, be fixed with a contact pin 31 at one, this contact pin and electromagnet 23 ' collaborative work, and retracing spring 32 acts on this contact pin.In addition, electromagnet 23 ' and retracing spring 32 the axle 42 from toggle link 41 have normalized distance from situation under act on contact pin 31.As a result, when electromagnet 23 ' is gone excitation, the corresponding rotation of toggle link occurred, and second leg 43 of toggle link 41 starts unshowned brake equipment.In addition, in the embodiment according to Fig. 6, be provided with toggle link 41 in the zone of each guide rail 2, here, two electromagnets 23 ' are controlled jointly.
Claims (7)
1, a kind of emergency braking apparatus of lift car, this lift car in hoistway along guide rail (2) operation and can be by the steel rope lifting, wherein be provided with a sensor (11) that is used to measure car speed and has the mechanism (13) that is used to discern excessively high speed, this mechanism is with electric mode control brake device, it is characterized in that, for measuring speed is provided with two wheels (9), described two wheels so abut on the guide rail (2), promptly a wheel (9) abuts on the wherein side of this guide rail (2) rail head (8), another is taken turns on the opposite side that abuts in this guide rail (2) rail head (8), each is taken turns the revolution or the rotating speed of (9) and is measured by sensor (11) independently, in case and one of them sensor (11) report excessively high speed, then this mechanism (13) triggers emergency braking.
2, emergency braking apparatus according to claim 1 is characterized in that, described two wheels (9) are swung on the fork (10) that supports at one in the supported on both sides of a guide rail (2), and wherein this fork (10) is by spring (15) pretension.
3, emergency braking apparatus according to claim 2, it is characterized in that, respectively have two wheels (9) that are supported on the fork (10) to abut on two mutual opposed guide rails (2), wherein per two wheels (9) that abut on the different guide rails (2) interconnect by axle.
4, emergency braking apparatus according to claim 3, it is characterized in that, the axle that connects described wheel the (9) is two, one (17 ') among described two axles is imported into a pipe (18), this pipe links to each other with this brake equipment, wherein should disconnect by pipe (18), two pipeline sections (18 ' of this pipe (18), 18 " two ends in opposite directions) interconnect rotationally by U section bar (19) is anti-; a push rod (21) is supported in the leg of described U section bar; this push rod bears the power of spring (25) and moved by an operating parts that links to each other with the described mechanism (13) that is used for the control brake device under the situation that overcomes this spring (25) effect, an off-centre is supported on this push rod (21); the friction wheel (20) that can not fix touches another friction wheel (22) that is positioned on this axle (17 ') that is imported into a pipe (18) with moving axially.
5, according to each described emergency braking apparatus in the claim 1 to 3, it is characterized in that, for described two guide rails, this brake equipment is by controller Be Controlled separately, and the operating parts of wherein said controller is controlled by the described mechanism (13) that is used for the control brake device jointly.
6, emergency braking apparatus according to claim 4 is characterized in that, the described operating parts that links to each other with the described mechanism (13) that is used for the control brake device is screw actuator (23).
7, emergency braking apparatus according to claim 5 is characterized in that, the operating parts of described controller is an electromagnet (23 ').
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA93/2005 | 2005-01-21 | ||
| AT932005A AT501326B1 (en) | 2005-01-21 | 2005-01-21 | EMERGENCY BRAKING EQUIPMENT FOR A LIFT CABIN |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101107189A CN101107189A (en) | 2008-01-16 |
| CN100572245C true CN100572245C (en) | 2009-12-23 |
Family
ID=36334027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006800028316A Active CN100572245C (en) | 2005-01-21 | 2006-01-20 | The emergency braking apparatus of lift car |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1841679B9 (en) |
| CN (1) | CN100572245C (en) |
| AT (1) | AT501326B1 (en) |
| ES (1) | ES2403223T3 (en) |
| RU (1) | RU2403203C2 (en) |
| WO (1) | WO2006077244A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348627B (en) * | 2009-03-16 | 2016-06-01 | 奥的斯电梯公司 | Electromagnetic safety trigger |
| CN109231057A (en) * | 2018-11-15 | 2019-01-18 | 无锡星亿智能环保装备股份有限公司 | A kind of centering type brake insurance institution |
| CN109335912B (en) * | 2018-11-22 | 2023-10-27 | 迈格钠磁动力股份有限公司 | Triggering device of elevator safety protection equipment |
| CN109650208B (en) * | 2018-12-25 | 2020-07-10 | 武汉科技大学 | Elevator brake device |
| CN112265895B (en) * | 2020-11-16 | 2022-02-01 | 江苏中宝龙工程机械有限公司 | Prevent weighing down construction elevator cage |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01317977A (en) * | 1988-06-17 | 1989-12-22 | Mitsubishi Electric Corp | Speed detector for elevator |
| JPH0930745A (en) * | 1995-07-17 | 1997-02-04 | Hitachi Ltd | Speed control device for rope type linear elevator |
| US6161653A (en) * | 1998-12-22 | 2000-12-19 | Otis Elevator Company | Ropeless governor mechanism for an elevator car |
| JP2002020055A (en) * | 2000-06-12 | 2002-01-23 | Otis Elevator Co | Elevator car brake connector and rotary actuator interface device for elevator car |
| US6296080B1 (en) * | 2000-06-21 | 2001-10-02 | Otis Elevator Company | Variable traction mechanism for rotary actuated overspeed safety device |
| JP4322518B2 (en) * | 2003-02-20 | 2009-09-02 | 東芝エレベータ株式会社 | Elevator safety device |
-
2005
- 2005-01-21 AT AT932005A patent/AT501326B1/en not_active IP Right Cessation
-
2006
- 2006-01-20 ES ES06707780T patent/ES2403223T3/en active Active
- 2006-01-20 CN CNB2006800028316A patent/CN100572245C/en active Active
- 2006-01-20 EP EP06707780.0A patent/EP1841679B9/en active Active
- 2006-01-20 RU RU2007121078/11A patent/RU2403203C2/en active
- 2006-01-20 WO PCT/EP2006/050333 patent/WO2006077244A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| AT501326A1 (en) | 2006-08-15 |
| EP1841679A1 (en) | 2007-10-10 |
| RU2403203C2 (en) | 2010-11-10 |
| WO2006077244B1 (en) | 2006-11-09 |
| RU2007121078A (en) | 2008-12-20 |
| EP1841679B1 (en) | 2013-01-16 |
| ES2403223T3 (en) | 2013-05-16 |
| CN101107189A (en) | 2008-01-16 |
| EP1841679B9 (en) | 2013-05-29 |
| WO2006077244A1 (en) | 2006-07-27 |
| AT501326B1 (en) | 2008-06-15 |
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