EP1841679A1 - Emergency braking device for a lift cabin - Google Patents
Emergency braking device for a lift cabinInfo
- Publication number
- EP1841679A1 EP1841679A1 EP06707780A EP06707780A EP1841679A1 EP 1841679 A1 EP1841679 A1 EP 1841679A1 EP 06707780 A EP06707780 A EP 06707780A EP 06707780 A EP06707780 A EP 06707780A EP 1841679 A1 EP1841679 A1 EP 1841679A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- speed
- wheels
- braking device
- guide rails
- braking
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract 2
- 230000004913 activation Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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
Definitions
- the invention relates to an emergency brake device for an elevator car according to the preamble of claim 1.
- Lifts are provided with braking or catching devices which serve to lift the elevator car in the event of an excessively high speed, e.g. in the event of control errors or in the event of a break in the ropeway, decelerate.
- the activation of the catching or braking device is carried out in known such devices of a fixed in the shaft or engine room speed limiter, which is set in a movement of the elevator car in rotation.
- a self-contained limiter rope is provided, which is deflected on the one hand at the speed limiter (usually at the highest point in the shaft) and on the other hand at a tension roller (usually at the lowest point in the shaft).
- the governor rope is connected at one point to the brake device of the elevator car, so that it is entrained during a movement of the elevator car. If the speed is too high, the overspeed governor blocks the governor rope, causing the arrestor to trip, causing the elevator car to come to a standstill.
- This structure has the advantage that it works purely mechanically and therefore can not be affected by power outages.
- centrifugal governor may u.U. only too late (i.e., only at very high speed) trigger.
- Another disadvantage is the relatively high cost. Apart from the actual braking device a circulating over the entire shaft rope is necessary, which must be performed up and down and also must be stretched.
- US 5366045 A - a storage and retrieval device has been known in which a support arm is held on a mast raised and lowered and in which an appealing at a high speed of the support arm braking device is provided.
- a connected to a speedometer wheel is provided, which rests against the mast.
- This speedometer is connected to a high speed detection device which activates a braking device.
- the aim of the invention is to avoid these disadvantages and to propose an emergency braking device of the type mentioned, in which a reliable detection of the speed of the elevator car is ensured and in which the entire emergency braking device can be accommodated in the elevator car, so no connection about the engine room is necessary.
- the speed of the elevator car can be detected, since their detection is independent of the supporting cable.
- the arrangement of two wheels has the advantage that the speeds of the two wheels can be compared with each other and thus a possible slippage of one of the wheels can be detected. In this case, a fault is reported and the Elevator locked after completion of the ride. An emergency braking is of course already triggered when only one wheel reports too high a speed.
- the actuator may be formed by a solenoid, which in the case of triggering the braking device, i. at too high speed of the elevator car, is de-energized, so that the spring moves the friction wheel in a position in which it is in contact with the rotatably connected to the shaft friction wheel. Due to the eccentric mounting of a friction wheel it comes to jamming of the two friction wheels, whereby the U-profile is coupled to the shaft and is taken away by this. This leads to the rotation of the tube and the activation of the braking device.
- FIG. 1 shows schematically an axonometric representation of a detector according to the invention for detecting the speed of an elevator car
- FIG. 2 is a schematic view of the detector of FIG. 1
- FIG. 3 schematically shows a detector according to FIG. 1 in connection with an actuating device for a braking device in axonometric representation
- FIG. 4 shows the entrainment device of FIG. 3 in a view
- FIG. 5 shows schematically a triggering device for a braking device
- FIG. 6 shows schematically a further embodiment of a triggering device for a braking device.
- wheels 9 On both side surfaces of the rail head 8 are wheels 9, which are rotatably supported in a rocker 10 (see also Fig. 2) and rotatably connected to a detector 11. These detectors 11 are connected via signal lines 12 to a device 13 for detecting a too high speed.
- the rocker 10 is, as can be seen from Fig. 2, 9 held pivotably about an axis 14 between the two wheels and acted upon by a spring 15 which is supported on an abutment, not shown, and for a rotation of the rocker 10th and thus to a contact pressure of the wheels 9 on the two side surfaces 16 of the rail head 8 provides. Since the clear distance between the two wheels 9 is only slightly smaller than the width of the rail head 8 and the spring 15 acts at a greater distance from the axis 14 of the rocker 10 at this, there is a corresponding leverage, and it can also with relative weak springs 15 a high contact pressure of the wheels 9 can be achieved.
- FIG. 3 In the embodiment of FIG. 3 are on each of the two guide rails 2 per two wheels 9, which are held in rockers 10.
- two adjacent to different guide rails 2 wheels 9 via a respective shaft 17, 17 'rotatably connected to each other, which is in each case surrounded by a detector 11.
- These detectors 11 give, e.g. with each revolution of the shaft 17 from a pulse.
- the shaft 17 ' is surrounded by a tube 18 which is divided into two sub-pipes 18', 18 ", these two sub-pipes 18 ', 18" are connected to each other via a U-profile 19.
- a detector 11 is seated between the two legs of the U-profile 19th
- 19 is a friction wheel 22 rotatably mounted on the shaft 17 'between the legs of the U-profile. This cooperates with another friction wheel 20 which is immovable in the axial direction, however is rotatably supported on a push rod 21.
- the push rod 21 may be rotatable, then the friction wheel 20 may be fixedly mounted on the push rod 21.
- This push rod 21 passes through the two legs of the U-profile 19 and is held in a solenoid 23 which is connected via control lines 24 to the device 13 (see FIG. 3) and controlled by this. Furthermore, acts on the push rod 21 (see FIG. 4) a spring 25 (which is designed as a compression spring), which is supported on the outside of the one leg of the U-profile 19 and on a shoulder 26 of the push rod 21.
- a spring 25 which is designed as a compression spring
- the solenoid 23 is energized and keeps the friction wheel 20 against the force of the spring 25 out of engagement with the friction wheel 22. This leaves the tube 18 in its position.
- the solenoid 23 when the solenoid 23 is de-energized, e.g. due to the detection of excessive speed of the elevator car (or even in case of failure of the power supply and the emergency power supply), the spring 25 causes a displacement of the push rod 21 to the right, whereby the friction wheel 20 comes into contact with the friction wheel 22 and from this is set in rotation. Since the friction wheel 20 is held eccentrically, there is a jamming of the friction wheel 20, since the distance between the shaft 17 'and the push rod 21 is designed for the smallest distance between the lateral surface of the friction wheel 20 and its eccentric axis of rotation. As a result, the U-profile 19 is taken and therefore the tube 18 is rotated.
- Fig. 5 is another embodiment of a triggering device for a
- Braking device shown schematically.
- a shaft 30 is provided, which is rigidly connected to a projection 31 which cooperates with an electromagnet 23 'and acts on the return spring 32.
- levers 27 At the two ends of the shaft 30 is connected to levers 27 which are connected to links 28 which act on the brake device, not shown.
- the shaft 30 and thus the lever 27 remain in a position in which the braking device is not activated and remains inoperative. If the solenoid 23 'de-energized, the return spring 32 causes a rotation of the shaft 30 and thus also the lever 27, whereby subsequently the braking device is activated and the elevator car is stopped.
- a shoulder 31 are attached to the one leg 40 of a pivotable about the axes 42 angle lever 41, which with a Electromagnet 23 'cooperates and on which a return spring 32 engages.
- the electromagnet 23 'and the return spring 32 act at a standard distance from the axis 42 of the angle lever 41 on the projection 31 a. This results in a corresponding rotation of the angle lever when the solenoid 23 'is de-energized, and the second leg 43 of the angle lever 41 activates the brake device, not shown.
- two angle levers 41 are arranged in the region of each guide rail, the two electromagnets 23 'being jointly controlled.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT932005A AT501326B1 (en) | 2005-01-21 | 2005-01-21 | EMERGENCY BRAKING EQUIPMENT FOR A LIFT CABIN |
PCT/EP2006/050333 WO2006077244A1 (en) | 2005-01-21 | 2006-01-20 | Emergency braking device for a lift cabin |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1841679A1 true EP1841679A1 (en) | 2007-10-10 |
EP1841679B1 EP1841679B1 (en) | 2013-01-16 |
EP1841679B9 EP1841679B9 (en) | 2013-05-29 |
Family
ID=36334027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06707780.0A Active EP1841679B9 (en) | 2005-01-21 | 2006-01-20 | Emergency braking device for a lift cabin |
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 |
---|---|---|---|---|
ES2614438T3 (en) * | 2009-03-16 | 2017-05-31 | Otis Elevator Company | Electromagnetic Safety Activator |
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 RU RU2007121078/11A patent/RU2403203C2/en 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 ES ES06707780T patent/ES2403223T3/en active Active
- 2006-01-20 WO PCT/EP2006/050333 patent/WO2006077244A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2006077244A1 * |
Also Published As
Publication number | Publication date |
---|---|
AT501326A1 (en) | 2006-08-15 |
EP1841679B1 (en) | 2013-01-16 |
RU2007121078A (en) | 2008-12-20 |
WO2006077244B1 (en) | 2006-11-09 |
CN101107189A (en) | 2008-01-16 |
AT501326B1 (en) | 2008-06-15 |
WO2006077244A1 (en) | 2006-07-27 |
ES2403223T3 (en) | 2013-05-16 |
CN100572245C (en) | 2009-12-23 |
EP1841679B9 (en) | 2013-05-29 |
RU2403203C2 (en) | 2010-11-10 |
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