EP0919507B1 - Fahrtreppe mit Betriebsbremse - Google Patents
Fahrtreppe mit Betriebsbremse Download PDFInfo
- Publication number
- EP0919507B1 EP0919507B1 EP98119232A EP98119232A EP0919507B1 EP 0919507 B1 EP0919507 B1 EP 0919507B1 EP 98119232 A EP98119232 A EP 98119232A EP 98119232 A EP98119232 A EP 98119232A EP 0919507 B1 EP0919507 B1 EP 0919507B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- assembly
- braking
- brake
- spring
- braking torque
- 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.)
- Expired - Lifetime
Links
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B23/00—Component parts of escalators or moving walkways
- B66B23/02—Driving gear
Definitions
- the invention relates to an escalator with service brake according the preamble of claim 1 and in particular an escalator service brake with increasing braking torque, like her For example, from US-A-4231452 is known.
- the braking torque should initially increase in a fixed manner and then decrease.
- Such service brakes for escalators and moving walks are already known. Due to guidelines and legal Circulations must basically include escalators and moving walks be equipped with a service brake.
- the embodiments of Braking devices can be different types. In addition, additional brakes are required under certain conditions required.
- an embodiment known from DE-U-29702130 has two superimposed arranged double jaw brakes with a total of four Brake shoes on, with a double-jaw brake as a service brake and the other is used as an auxiliary brake.
- the well-known brake devices have in common is that they Type and design only conditionally are inflexible. So is in escalators depending on head, direction and speed for example, one specified to these parameters Brake assembly required.
- a braking torque becomes abrupt applied so that even taking into account the prescribed Minimum braking distance of 200 mm for persons carried Due to their inertial force there is an increased risk of falling. Furthermore, such braking devices do not take into account the existing dependencies between the load of the step band, the braking torque and the delay of moving step band or the braking distance.
- the invention has the object, an improved Braking device according to the preamble of claim 1 to create flexible use, improved security guaranteed for escalator users, cost-effective can be produced and better to the respective brake requirements can be adapted.
- an escalator is provided with service brake, with which service brake a braking force on the in Moving step band or a braking torque on at least one coupled to the moving step band wave can be applied, wherein the braking torque and / or the braking force during the braking period is at least partially variable.
- the service brake according to the invention allows e.g. an adaptation of the braking behavior at different Loads of the escalator, the setting of a load independent Braking distance, the setting of a load-dependent or load-independent delay as well as a Variation of the delay, for example, such that these in the initial phase of the braking period is lower.
- An escalator according to the invention is also advantageous in that as an independent of their direction an optimal Braking behavior can be adjusted.
- the service brake includes a main spring arrangement, by the spring force during the Braking period a braking torque can be applied to the motor shaft, an auxiliary spring arrangement, whose spring force is opposite to that of the main spring arrangement, but lower, and a damper assembly, the with the auxiliary spring assembly substantially in series is switched.
- Such an arrangement of spring assemblies and damper assembly allows that through the main spring assembly generated braking torque during the braking period - as a result of self-building force in the auxiliary spring arrangement - initially is reduced, so a relatively low braking torque in the Initial phase of the braking time is applied. Subsequently the auxiliary spring arrangement relaxes by time-dependent Inefficiency of the damper.
- the service brake according to the invention is advantageous in that it is easier Construction with simple rugged components that are not depend on functioning power supply - what in Dangerous situations that are coupled with power failure necessary is - allows a gentle braking operation. By the renunciation of electrical or electromagnetic components this version is also energy efficient.
- Such a brake device according to the invention shows the surprising advantage that the braking distance is only slightly changes compared to known devices.
- the damping of the damper assembly is selected such that the Damper assembly only becomes effective when the auxiliary spring arrangement a has traveled predetermined way and / or with a predetermined Minimum load is charged.
- the braking torque curve can thus both monotonously rising as also as a combination of monotonic and strictly monotonous rising be designed.
- This embodiment according to the invention makes sense insofar as persons standing on the moving step band not from be surprised by an abrupt deceleration and consequently overthrow their inertia.
- the Persons but also the possibility or time on the Braking process, for example, by their Shift focus and thus a more stable, to the Abbremsvorgang adapted position can accept.
- the accident risk is thus significantly reduced.
- the start-up phase of the Determine braking This is done at the beginning of the braking process due to the spring force of the main spring assembly the Spring force of the intermediate spring assembly constructed.
- the initial braking torque In the under Pressurized, preloaded state is the initial braking torque lower, because the damper assembly of the spring force the main spring arrangement counteracts.
- a control device for the variable, controlled adjustment of the identifier of the Additional spring arrangement and / or the damping of the damper assembly and / or the braking torque and / or the deceleration provided the moving step band.
- the control device is to be understood broadly and includes in particular also a control device.
- the possibility is thus created about the control process according to the invention, which in a temporal dependence of the size of the generated Braking torque expresses to intervene to control that the braking torque curve can be variably adjusted.
- This setting can also be done at standstill and thus for a subsequent braking operation are fixed as they can be done on the fly, the latter being Variation also in particular to adapt to changed Operating conditions, e.g. changed loads of the moving Step band, offers. This always makes more sense Braking guaranteed.
- the braking distance through the control device as well Onset of the braking period can be predetermined as well as by cyclic detection of the already traveled braking distance the Damper assembly adjusted during the braking period so can be that the braking distance is always constant.
- control device and the Damper arrangement such that the force at which the Damper assembly comes into effect, and / or the damping the damper assembly is variably adjustable.
- This development is advantageous in that they the Use of the same brake assembly at different loaded step belt and at different delivery heights which also allows a more economical production process due to higher quantities possible. Furthermore, can during the operation of an escalator the lightning point as well the damping of the damper assembly can be varied so that always an optimal adaptation to the operation of the escalator changing parameters (e.g., the load of the step band) is possible and thus always optimal braking behavior is ensured.
- the escalator changing parameters e.g., the load of the step band
- control device and the main spring and / or secondary spring arrangement such procure that the spring constant of the respective spring arrangement is variably adjustable.
- the size of the initial braking torque is made possible set and the following braking torque curve to influence.
- Control device designed and arranged such that a predetermined braking distance of the moving step belt (e.g. or independent of constant braking distance) can be.
- a predetermined delay of the moving step belt such as a load or speed independent constant delay, can be adjusted, can be useful.
- a further development of the invention comprises a measuring device for measuring the load and / or speed of the step band.
- Such a measuring device can during operation of the respective load or speed condition of Stepbandes are recorded and the data collected Control device to be supplied. This allows in Combination with the control device that during a braking operation always an optimal braking torque is generated.
- Measuring device makes sense. So she can e.g. also for control the drive of the escalator are used.
- control device such that the damping of the damper assembly always in operation to the load and / or the state of movement of the Step band is adapted so that a predetermined Braking torque and / or a predetermined delay always is ensured.
- Fig. 1 has a brake assembly according to the invention 1 with the escalator drive, not shown coupled, rotatably mounted shaft 2 (for example, main shaft with sprockets for driving the step belt), whose Speed during operation of the escalator the speed of Stage band represents.
- shaft 2 for example, main shaft with sprockets for driving the step belt
- a main spring assembly brake spring 13
- the adjusting nuts 11 can be the preload of the main spring assembly vary, so that here on the braking torque and thus the Braking distance is adjustable.
- a brake release device 14 with brake release lever 15 arranged at the brake shoes 3, 4th facing ends each adjusting nuts 16 for adjustment of the brake shoe lift are arranged.
- auxiliary spring arrangement 17 Parallel to the brake release device 14 and also between arranged the two brake shoes 3,4 and also engaged with these is an auxiliary spring arrangement 17 with series damper assembly 18 intended.
- the cylinder of the damper assembly 18 is at a first Brake shoe 3 in a fixed, but adjustable contact, so that move the position of the damper assembly 18 axially leaves.
- the Auslow the damper assembly is available with a Linkage 19 in contact, in the axial extension of the Damper assembly 18 from an opening of the second brake shoe 4th is received axially displaceable. With the linkage 19 is a fixing disc 20 firmly connected.
- the auxiliary spring assembly 17 extends coaxially around the Linkage 19 around and has a between the second brake shoe 4th and fixing washer 20 arranged first spring 21 and a between the fixing disc 20 and Auskeep arranged second Spring 22 on which the damper (18) in its unloaded Starting position brings.
- the braking is caused by the de-energized brake release solenoid 14 initiated.
- the brake shoes 3 and 4 must be immediately incident, which causes by the prestressed springs 13 is, so that the shaft 2 is braked.
- the largest braking torque is reached when the resistance of the damper 18 is canceled, i. if the lift rod, so the linkage 19, the damper 18 is fully retracted.
Landscapes
- Escalators And Moving Walkways (AREA)
- Braking Arrangements (AREA)
Description
- Fig. 1
- eine schematische Ansicht einer beispielhaften erfindungsgemäßen Ausführungsform.
Claims (12)
- Fahrtreppe mit einer Betriebsbremse (1) zum Abbremsen des Stufenbandes, mit welcher eine Bremskraft auf das in Bewegung befindliche Stufenband oder ein Bremsmoment auf mindestens eine mit dem bewegten Stufenband gekoppelte Welle aufbringbar ist, wobei die Betriebsbremse eine Hauptfederanordnung (13), zum Erzeugen eines Bremsmoments sowie eine mit einer Dämpferanordnung (18) verbundene Zusatzfederanordnung (17), mit deren Federkraft das von der Hauptfederanordnung (13) hervorgerufene Bremsmoment verminderbar ist, aufweist,
dadurch gekennzeichnet, dass mit der Federkraft der Hauptfederanordnung (17) ein Bremsmoment auf die Motorwelle (2) aufbringbar ist, wobei die Dämpfung der Dämpferanordnung, welche mit der Zusatzfederanordnung (17) im Wesentlichen in Reihe geschaltet ist, derart ausgewählt ist, dass die Dämpferanordnung (18) erst wirksam wird, wenn die Zusatzfederanordnung (17) einen vorbestimmten Weg zurückgelegt hat und/oder mit einer vorbestimmten Mindestkraft belastet wird, so dass das Bremsmoment oder die Bremskraft während der Bremsperiode mindestens teilweise variabel ist. - Fahrtreppe nach Anspruch 1,
dadurch gekennzeichnet, dass die Betriebsbremse (1) derart beschaffen und angeordnet ist, dass das Bremsmoment auf einen im wesentlichen vorbestimmten Anfangswert eingestellt wird und dann während der Betätigung der Bremsvorrichtung mit fortschreitender Zeit im Wesentlichen zunimmt. - Fahrtreppe nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass im ungebremsten Zustand des bewegten Stufenbandesdie Hauptfederanordnung (13) durch einen aktivierten bremslüft-Spreizmagneten (14) druckbelastet ist; unddie Zusatzfederanordnung (17) sich an den Bremslüftmagneten (14) unbelastet oder auf Druck belastet anschließt. - Fahrtreppe nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Zusatzfederanordnung (17) eine erste Feder (21) und eine zweite Feder (22) aufweist, die durch eine Fixierscheibe (20) getrennt sind, wobei die zweite Feder (22), die zwischen der Fixierscheibe (20) und de Ausfahrer der Dämpferanordnung (18) angeordnet ist, die Dämpferanordnung (18) in seine unbelastete Ausgangsstellung bringt. - Fahrtreppe nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Dämpfung der Dämferanordnung (18) derart auf die Federkonstante der Zusatzfederanordnung (17) abgestimmt ist, dass die Dämpferanordnung (18) die Zeit bestimmt, in der Feder (21) vollständig entspannt wird. - Fahrtreppe nach einem der vorhergehenden Ansprüche,
gekennzeichnet durch eine Steuervorrichtung zur gesteuerten, variable Einstellung der Kennung der Zusatzfederanordnung (17) und/oder der Dämpfung der Dämferanordnung (18) und/oder des Bremsmoments und/oder der Verzögerung des bewegten Stufenbandes. - Fahrtreppe nach Ansprüch 6,
dadurch gekennzeichnet, dass unter Steuerung der Steuervorrichtung sowie der Dämpferanordnung (18) beim Ansprechen der Bremse die Wirkung der Dämpferanordnung (18) am größten ist und anschließend abnimmt, so dass das Bremsmoment zunimmt, und/oder die Dämpfung der Dämpferanordnung (18) variabel einstellbar ist. - Fahrtreppe nach einem der vorhergehenden Ansprüche 6 oder 7,
dadurch gekennzeichnet, dass die Steuervorrichtung sowie die Hauptfeder- und/oder Nebenfederanordnung derart beschaffen sind, dass die Federkonstante der jeweiligen Federanordnung einstellbar ist. - Fahrtreppe nach einem der vorhergehenden Ansprüche 6-8,
dadurch gekennzeichnet, dass mit der Steuervorrichtung ein vorbestimmter Bremsweg des Stufenbandes, wie ein last- oder geschwindigkeitsunabhängig konstanter Bremsweg, einstellbar ist. - Fahrtreppe nach einem der vorhergehenden Ansprüche 6-9,
dadurch gekennzeichnet, dass mit der Steuervorrichtung eine vorbestimmte Verzögerung des Stufenbandes, wie eine last- oder geschwindigkeitsunabhängig konstante Verzögerung, einstellbar ist. - Fahrtreppe nach einem der vorhergehenden Ansprüche 6-10,
gekennzeichnet durch eine Messvorrichtung zur Messung der Belastung und/oder der Geschwindigkeit des Stufenbandes. - Fahrtreppe nach einem der vorhergehenden Ansprüche 6-11,
dadurch gekennzeichnet, dass mit der Steuervorrichtung die Dämpfung der Dämpferanordnung (18) im Betrieb stets an die Belastung und/oder den Bewegungszustand des Stufenbandes zur Sicherstellung eines vorbestimmten Bremsmoments und/oder einer vorbestimmten Verzögerung anpassbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29719565U | 1997-11-04 | ||
DE29719565U DE29719565U1 (de) | 1997-11-04 | 1997-11-04 | Fahrtreppe mit Betriebsbremse |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0919507A2 EP0919507A2 (de) | 1999-06-02 |
EP0919507A3 EP0919507A3 (de) | 1999-06-16 |
EP0919507B1 true EP0919507B1 (de) | 2005-11-16 |
Family
ID=8048149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98119232A Expired - Lifetime EP0919507B1 (de) | 1997-11-04 | 1998-10-12 | Fahrtreppe mit Betriebsbremse |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0919507B1 (de) |
AT (1) | ATE309954T1 (de) |
DE (2) | DE29719565U1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106050997A (zh) * | 2016-07-11 | 2016-10-26 | 宁波宏大电梯有限公司 | 一种制动结构及扶梯主机 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3830344A (en) * | 1973-02-15 | 1974-08-20 | Reliance Electric Co | Brake and control therefor |
US4231452A (en) * | 1978-12-28 | 1980-11-04 | Westinghouse Electric Corp. | Spring applied, electric released drum brake |
JPH05139678A (ja) * | 1991-11-22 | 1993-06-08 | Toshiba Corp | マンコンベアのブレーキ装置 |
US5337878A (en) * | 1993-12-28 | 1994-08-16 | Otis Elevator Company | Assembly and method for adjusting brake force for passenger conveyor emergency brake |
-
1997
- 1997-11-04 DE DE29719565U patent/DE29719565U1/de not_active Expired - Lifetime
-
1998
- 1998-10-12 AT AT98119232T patent/ATE309954T1/de not_active IP Right Cessation
- 1998-10-12 EP EP98119232A patent/EP0919507B1/de not_active Expired - Lifetime
- 1998-10-12 DE DE59813194T patent/DE59813194D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ATE309954T1 (de) | 2005-12-15 |
EP0919507A3 (de) | 1999-06-16 |
DE29719565U1 (de) | 1998-02-19 |
EP0919507A2 (de) | 1999-06-02 |
DE59813194D1 (de) | 2005-12-22 |
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