CN101107190B - Braking device or safety tongs for a lift cabin - Google Patents
Braking device or safety tongs for a lift cabin Download PDFInfo
- Publication number
- CN101107190B CN101107190B CN2006800028301A CN200680002830A CN101107190B CN 101107190 B CN101107190 B CN 101107190B CN 2006800028301 A CN2006800028301 A CN 2006800028301A CN 200680002830 A CN200680002830 A CN 200680002830A CN 101107190 B CN101107190 B CN 101107190B
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- CN
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- Prior art keywords
- guide rail
- roller
- groove
- slit
- braking
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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
- B66B5/16—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
- B66B5/22—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 by means of linearly-movable wedges
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a braking or interception device for a lift cabin, which is guided in a shaft along vertical guide tracks (2). To permit a simple construction, the braking organ is configured by a roller (9), whose axis runs perpendicular to the longitudinal direction of the guide track (2) and whose outer surface is configured as a friction surface (12). Said roller is displaceably guided by stepped shoulders (11) in a gap (20) of a pressure body (19) that runs parallel to the associated guide track (2), said gap (20) having a groove (21), which runs nearer to the guide track (2) at least towards one end. The roller (9) is connected to an arresting organ and is pre-tensioned against the guide track (2) with the aid of a spring (28). When the arresting organ releases the roller (9), the latter (9) is pressed against the guide track (2) and rolls along the latter until it reaches the end of the groove (21), where it becomes firmly clamped, thus braking the lift cabin by friction.
Description
Technical field
The present invention relates to be used for the braking or the pause equipment of lift car.
Background technology
Elevator is equipped with brake equipment or safety tongs, is used for stop elevator car under the situation of unallowed high-speed cruising, when this high-speed cruising for example may appear at control setup generation functional fault or wire cable rupture.
In known this device, start braking or pause equipment 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 braking or the pause equipment 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, result, braking or pause equipment is 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.U.S. Pat 5,020,640 disclose a kind of brake device for elevator, and wherein the speed of lift car is measured by drive wheel, and hoist cable is on this drive wheel.
Usually, in elevator, be provided with the counterweight that is used for lift car.Design-calculated according to counterweight and other structural element is different, supposes that sometimes lift car only can reach too high speed when descending.But people must consider too high speed again sometimes when up, and for example when empty ladder, lift car is compared heavy and light, and therefore when control setup lost efficacy, it is up that counterweight quickens lift car.
Constitute the U.S. Pat 5 of same type, 366,045A discloses a kind of braking or pause equipment of the above-mentioned type, here, pressure body has two bevelled plane of action, and two wedge shape brake components (voussoir) that work in the guide rail both sides abut on the above-mentioned plane of action.In addition, a screw actuator constitutes holding element, and this screw actuator overcomes spring force brake component is remained on such position, promptly on this position, leaves the slit between the friction face of brake component and guide rail at that time.If screw actuator is gone excitation, then spring is pressed into brake component in the slit between pressure body plane of action and the guide rail, that itself dwindles up, and the result frictional engagement occurs between brake component and guide rail, and the thrust of brake component is further increased.
But, find that in this known occasion the brake action of enhancing only appears at lift car when descending.When up, the frictional engagement that occurs between guide rail and brake component has played the effect that reduces braking force.Put a last floor on the lift car of stop with regard to making thus, this is favourable.But its shortcoming is to fail to produce emergency braking when up.
Also there is following problem in this known solution, promptly especially when guide rail position is wrong, the one-sided guide rail that acts on of brake component may occur, and lift car appears in the possibility of result, and then guide rail occurs and be badly damaged.This reinforcement degree that results from braking force depends on braking force itself (i.e. friction).If the friction ratio of a side is less, then thrust is also less, the result, and braking force totally reduces a lot.
European patent EP 0841280A1 discloses a kind of safety tongs, and it has slit, groove and the roller construction of the above-mentioned type.But, this safety tongs can only be activated when lift car is up.In addition, it is mechanical flip flop equipment by parts such as speed limit ropes that this safety tongs is specified, promptly a kind of like this flip flop equipment, and it draws between guide rail and the pressure body first segment in the gap with roller.
Summary of the invention
In contrast to this, task of the present invention provides a kind of braking or pause equipment, and it works on omnirange and can electric means be triggered, and still, it also guarantees job security under power-off condition, because it did not lose efficacy because of power failure.
According to the present invention, in the braking or pause equipment of the above-mentioned type, finished this task by the following technical programs.Promptly the invention provides a kind of braking or pause equipment that is used for lift car, described lift car moves along vertical guide rail in hoistway, the brake component that wherein has a friction face is maintained on the pressure body on the described lift car of being placed in of described brake equipment in a movable manner, and described brake component is abutted on the guide rail from the inefficacy dead position of being determined by holding element, wherein said brake component is made of roller, the trend of the axis of described roller is vertical perpendicular to described guide rail, the outer peripheral face of described roller is the form of friction face, the convex shoulder that described roller contracts is later on imported at described pressure body one movably and is parallel in the slit that corresponding guide rail extends, wherein said slit has the groove of the friction face that is used to hold described roller, described groove towards at least one end have dwindle apart from the guide rail spacing, thereby described roller is on the primary importance, be that the friction face of described roller is attached on the described guide rail on the one hand and is resisted against on the other hand in the described groove, described roller also is on the second place, it is the place, slit that the convex shoulder of described roller is resisted against described groove next door, thereby prevent that described roller is moved further, and described roller is connected with the holding element of determining its inefficacy dead position, it is characterized in that, described slit and described groove extend to both sides from the depression of determining described inefficacy dead position, described holding element has the screw actuator of settling swingably, described roller is depressed into cooresponding guide rail in advance by spring, described spring is the stage clip form, described roller towards the direction of guide rail by pretension, the effect of described spring is opposite with described screw actuator, described screw actuator is controlled by the mechanism of a monitoring elevator car speed, and have when too high-speed when detecting lift car, described screw actuator is gone excitation, thus one, described spring make bearing and and then make described roller shift to described guide rail, thereby described roller is resisted against on the described guide rail with its friction face, and quilt is driven rotation and rolls on described guide rail.
Here, the outstanding advantage of measure of the present invention is that screw actuator overcomes the work of initial tension of spring ground, guarantees that thus braking or pause equipment can be activated under situation about having a power failure fully, so will not lose efficacy.
In order to reduce the impaired danger of guide rail under the situation of braking hindering for some reason as far as possible, it is favourable adopting following scheme, and promptly two legs of described pressure body are clamped described guide rail in its free end region.
By this measure, can avoid guide rail to bear pressure, the situation that when connecting two pressure bodies corresponding to different guide rails with rigid support, pressure just may occur bearing.In addition, such brake equipment also is applicable to following elevator, and promptly lift car only moves on one or two is fixed in the guide rail of same well enclosure.
By following scheme, reached the reduced stiffness of a pressure body part (corresponding to the up direction of lift car), the result, the thrust of brake component is reduced in the up braking of lift car.This scheme is, described pressure body is at the otch that extends perpendicular to described guide rail that has in the zone of extendible portion down in described slit itself.Thus one, when glancing impact on up direction, obtained smaller inhibitory action, thereby can avoid the passenger to fly away from the floor of lift car by simple mode.
Description of drawings
Now, describe the present invention in conjunction with the accompanying drawings in detail.Wherein:
Fig. 1 schematically illustrates according to brake component of the present invention;
Fig. 2 schematically illustrates according to braking of the present invention or pause equipment with horizontal sectional view;
Fig. 3 shows this braking or pause equipment along the arrow III direction of Fig. 2.
The specific embodiment
As shown in Figure 2, guide rail 2 has the rail head 8 that is connected with the flange of rail 7 by web 6.
In braking according to the present invention or pause equipment, be provided with the brake component that is roller 9 shapes, on two end faces 10 of roller, be provided with convex shoulder 11 (referring to Fig. 1).The outer peripheral face of roller 9 plays the effect of friction face 12.For this reason, it has annular knurl structure or friction lining, and it is designated to be used to be connected to guide rail 2 (referring to Fig. 2).
Fig. 2 illustrates brake equipment 14 of the present invention with the horizontal section.This brake equipment has pressure body 19, and it corresponds essentially to U-shaped, and wherein, two legs 16,16 ' are clamped guide rail 2 in its free end region.
Be provided with slit 20 on the leg 16 of pressure body 19, roller 9 is imported into this slit.In addition, slit 20 has groove 21, and this groove can hold the friction face 12 (referring to Fig. 1) of roller 9.
The axle 22 of roller 9 also can be fixed on the conventional rope of common velocity limiter and by this rope to be brought in the slit 20 that itself dwindles.Therefore, this safety tongs is applicable to electric means (by removing the screw actuator of excitation) or mechanical system (passing through rope) and is activated.
When lift car was descending, roller 9 clockwise rotated (referring to Fig. 3 the time).Thus one, roller 9 rolls on guide rail 2 and to rising.Because the distance between groove 21 and the guide rail 2 is dwindled up, so this roller is clamped between groove 21 and guide rail 2, the result, this roller rubs in groove 21 also thereby is braked, thus unshowned lift car is by stop.On the final position, friction face 12 (see figure 1)s are (see figure 3) contact groove 21 on position 41, and on position 42, the slit 20 on convex shoulder 11 (see figure 1)s of roller 9 contact groove 21 next doors.On position 42, the degree of depth of groove 21 is correspondingly big, thereby friction face 12 (see figure 1)s do not contact groove 21 (see figure 3)s there.In this way, the motion distance of roller 9 is restricted, but this has no significant effect braking force, and this is because the friction quite little (convex shoulder is smooth) of (see figure 1) in convex shoulder 11 zones.Green phase answer setting slot 21 apart from guide rail 2 apart from (see figure 3), can correspondingly pre-determine the inhibitory action that occur this moment.Because bearing 25 can be swung and owing to be provided with breach 23, so roller 9 can be in the clear 20 moved along the slit.
When glancing impact in up, only need smaller braking force this moment, roller 9 rotates counterclockwise and thereby rolls downwards.
Slit 20 (perhaps groove 21) roughly has depression 31 at the center, be used for determining the inefficacy dead position.Roller 9 is drawn into this inefficacy dead position by the screw actuator of excitation.At this moment, between guide rail 2 and roller 9, leave the gap.
In form of implementation shown in Figure 3,, in lower area, be provided with otch 32 in order to reduce the rigidity of pressure body 19.So, pressure body 19 corresponding to up part in produced the corresponding rigidity that reduces, and then produced the thrust of smaller roller 9, the result smaller inhibitory action occurred at glancing impact.
The latter also can by on the depression 31 and under corresponding the walking always of groove 21 that differently design realize.
Claims (3)
1. a braking or pause equipment that is used for lift car, described lift car moves along vertical guide rail (2) in hoistway, the brake component that wherein has a friction face (12) is maintained on the pressure body (19) on the described lift car of being placed in of described brake equipment in a movable manner, and described brake component is abutted on the guide rail (2) from the inefficacy dead position of being determined by holding element, wherein said brake component is made of roller (9), the trend of the axis of described roller is vertical perpendicular to described guide rail (2), the outer peripheral face of described roller is the form of friction face (12), the convex shoulder that described roller contracts later on (11) is imported at described pressure body (19) one movably and is parallel in the slit (20) that corresponding guide rail (2) extends, wherein said slit (20) has the groove (21) of the friction face (12) that is used to hold described roller (9), described groove (21) towards at least one end have dwindle apart from guide rail (2) spacing, thereby described roller (9) is on the primary importance (41), be that the friction face (12) of described roller is attached on the one hand described guide rail (2) and goes up and be resisted against on the other hand in the described groove (21), described roller (9) also is on the second place (42), be that the slit (20) that the convex shoulder (11) of described roller is resisted against described groove (21) next door is located, thereby prevent that described roller (9) is moved further, and described roller (9) is connected with the holding element of determining its inefficacy dead position, it is characterized in that, described slit (20) and described groove (21) extend to both sides from the depression (31) of determining described inefficacy dead position, described holding element has the screw actuator of settling swingably, described roller (9) is depressed into cooresponding guide rail (2) in advance by spring (28), described spring (28) is the stage clip form, described roller (9) towards the direction of guide rail (2) by pretension, the effect of described spring (28) is opposite with described screw actuator, described screw actuator is controlled by the mechanism of a monitoring elevator car speed, and have when too high-speed when detecting lift car, described screw actuator is gone excitation, thus one, described spring (28) make bearing (25) and and then make described roller (9) shift to described guide rail (2), thereby described roller is resisted against on the described guide rail (2) with its friction face (12), and quilt is driven rotation and rolls on described guide rail.
2. braking according to claim 1 or pause equipment is characterized in that, two legs (16,16 ') of described pressure body (19) are clamped described guide rail (2) in its free end region.
3. braking according to claim 1 and 2 or pause equipment is characterized in that, described pressure body (19) is at the otch (32) that extends perpendicular to described guide rail (2) that itself has in the zone of extendible portion down of described slit (20).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA92/2005 | 2005-01-21 | ||
| AT922005A AT501415B1 (en) | 2005-01-21 | 2005-01-21 | BRAKE- BZW. FAN DEVICE FOR A LIFT CABIN |
| PCT/EP2006/050332 WO2006077243A1 (en) | 2005-01-21 | 2006-01-20 | Braking or interception device for a lift cabin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101107190A CN101107190A (en) | 2008-01-16 |
| CN101107190B true CN101107190B (en) | 2010-10-13 |
Family
ID=36353324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800028301A Active CN101107190B (en) | 2005-01-21 | 2006-01-20 | Braking device or safety tongs for a lift cabin |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1853504B9 (en) |
| CN (1) | CN101107190B (en) |
| AT (1) | AT501415B1 (en) |
| ES (1) | ES2412855T3 (en) |
| RU (1) | RU2389677C2 (en) |
| WO (1) | WO2006077243A1 (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101233068B (en) * | 2006-07-26 | 2012-09-05 | 维托公开股份有限公司 | Brake device or stop device for elevator car |
| DE102006043890A1 (en) * | 2006-09-19 | 2008-03-27 | Wittur Ag | Braking and/or arresting device for cabin of lift, has guiding device cooperated with roller and formed such that guiding device moves into pole-distant position during de-energization of electromagnets for guide rail |
| ATE504532T1 (en) * | 2006-11-08 | 2011-04-15 | Otis Elevator Co | WINDING BRAKE DEVICE |
| ES2353979T3 (en) * | 2007-04-18 | 2011-03-08 | Wittur Holding Gmbh | BRAKING OR ROLLING DEVICE WITH ROLLER THAT RUNS PARTIALLY ON BRONZE COATING AND INCLUDED FRICTION SURFACE. |
| WO2011145974A1 (en) * | 2010-05-18 | 2011-11-24 | Lushnikov Andrey Vladimirovich | Parking vessel |
| US9169104B2 (en) * | 2010-12-17 | 2015-10-27 | Inventio Ag | Activating a safety gear |
| CN103958385B (en) * | 2011-11-29 | 2016-11-16 | 因温特奥股份公司 | There is the deadman's brake of resetting-mechanism |
| WO2014042936A2 (en) | 2012-09-14 | 2014-03-20 | Valeant Pharmaceuticals International, Inc. | Compositions and methods for teeth whitening |
| EP2837592A1 (en) | 2013-08-13 | 2015-02-18 | Aplicaciones Electromecanicas Gervall, S.A. | Driving system for a lift safety gear |
| RU2596635C1 (en) * | 2015-07-31 | 2016-09-10 | Публичное акционерное общество "Карачаровский механический завод" | Elevator cabin catcher |
| CN105173963A (en) * | 2015-08-10 | 2015-12-23 | 厦门升通电梯有限公司 | Elevator car accidental movement control device |
| EA030810B1 (en) * | 2016-06-29 | 2018-09-28 | Открытое Акционерное Общество "Могилевский Завод Лифтового Машиностроения" (Оао "Могилевлифтмаш") | Double-direction lift car catcher |
| DE202016103895U1 (en) * | 2016-07-19 | 2017-10-20 | Wittur Holding Gmbh | Actuator for an elevator braking device |
| DE202017103555U1 (en) * | 2017-06-14 | 2017-07-20 | Wittur Holding Gmbh | Auxiliary drive for a safety brake device |
| CN108275539A (en) * | 2018-03-12 | 2018-07-13 | 界首市迅立达电梯有限公司 | A kind of elevator car safety auxiliary device suitable for Lao Lou transformations |
| US10889467B2 (en) * | 2018-05-08 | 2021-01-12 | Otis Elevator Company | Synchronization based on distance of magnet assembly to rail |
| WO2021160815A1 (en) | 2020-02-14 | 2021-08-19 | Wittur Holding Gmbh | Triggering unit for actuating an elevator braking device |
| CN112193963A (en) * | 2020-09-30 | 2021-01-08 | 宁波宏大电梯有限公司 | Safety gear resetting device, elevator and safety gear resetting method |
| DE202022100179U1 (en) | 2022-01-13 | 2022-01-20 | Wittur Holding Gmbh | Trigger unit for actuating an elevator braking device |
| DE202022100182U1 (en) | 2022-01-13 | 2022-01-20 | Wittur Holding Gmbh | Trigger unit for actuating an elevator braking device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182709A (en) * | 1996-11-07 | 1998-05-27 | 科恩股份公司 | Safety clamp |
| EP1209117B1 (en) * | 1999-05-28 | 2003-07-23 | Selcom Aragon, S.A. | Elevator car parachute system with up and down actuation |
| CN2623667Y (en) * | 2002-09-05 | 2004-07-07 | 盛嘉勋 | Bidirectional safe clamp |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1756607A1 (en) * | 1968-06-14 | 1970-04-09 | Demag Ag | Safety catch for a load handling device |
| ES2154200B1 (en) * | 1998-12-22 | 2001-11-01 | Dynatech Dynamics & Technology | EMERGENCY BRAKING SYSTEM FOR ELEVATORS, DOUBLE EFFECT, UP AND DOWN. |
| US6173813B1 (en) * | 1998-12-23 | 2001-01-16 | Otis Elevator Company | Electronic control for an elevator braking system |
| EP1400476B1 (en) * | 2002-09-23 | 2009-10-21 | Inventio Ag | Safety gear for elevators |
| 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 AT922005A patent/AT501415B1/en not_active IP Right Cessation
-
2006
- 2006-01-20 CN CN2006800028301A patent/CN101107190B/en active Active
- 2006-01-20 RU RU2007122633/11A patent/RU2389677C2/en active
- 2006-01-20 WO PCT/EP2006/050332 patent/WO2006077243A1/en active Application Filing
- 2006-01-20 ES ES06703571T patent/ES2412855T3/en active Active
- 2006-01-20 EP EP06703571.7A patent/EP1853504B9/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182709A (en) * | 1996-11-07 | 1998-05-27 | 科恩股份公司 | Safety clamp |
| EP1209117B1 (en) * | 1999-05-28 | 2003-07-23 | Selcom Aragon, S.A. | Elevator car parachute system with up and down actuation |
| CN2623667Y (en) * | 2002-09-05 | 2004-07-07 | 盛嘉勋 | Bidirectional safe clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1853504B1 (en) | 2013-03-13 |
| EP1853504B9 (en) | 2014-06-04 |
| ES2412855T3 (en) | 2013-07-12 |
| RU2007122633A (en) | 2009-01-27 |
| EP1853504A1 (en) | 2007-11-14 |
| AT501415A1 (en) | 2006-08-15 |
| WO2006077243B1 (en) | 2006-11-02 |
| RU2389677C2 (en) | 2010-05-20 |
| CN101107190A (en) | 2008-01-16 |
| WO2006077243A1 (en) | 2006-07-27 |
| AT501415B1 (en) | 2009-01-15 |
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