EP4043379B1 - Electromechanical parachute activation system for an elevator apparatus - Google Patents
Electromechanical parachute activation system for an elevator apparatus Download PDFInfo
- Publication number
- EP4043379B1 EP4043379B1 EP22382120.8A EP22382120A EP4043379B1 EP 4043379 B1 EP4043379 B1 EP 4043379B1 EP 22382120 A EP22382120 A EP 22382120A EP 4043379 B1 EP4043379 B1 EP 4043379B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- parachute
- trigger
- plate
- activation
- guide
- 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.)
- Active
Links
- 230000004913 activation Effects 0.000 title claims description 39
- 101000714541 Danio rerio Cadherin-2 Proteins 0.000 title claims description 21
- 230000003028 elevating effect Effects 0.000 claims description 10
- 230000003213 activating effect Effects 0.000 claims description 3
- 238000013459 approach Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000003100 immobilizing effect Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
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
- B66B5/16—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
- B66B5/20—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 rotatable eccentrically-mounted members
-
- 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 present invention belongs to the technical field of elevator safety. More specifically, the invention relates to an activation system for electronically activated parachutes.
- parachute activation has been carried out by means of a speed limiting element of a mechanical type which, in the event of excess speed of the car, is blocked and causes said activation.
- the object of the invention consists of a system for activating the parachute of elevating devices being electromechanically actuated and involving lower energy consumption, since it can be maintained in a stand-by or holding condition in which the electromagnet consumption is zero.
- the parachute is attached to a car or counterweight and is located in proximity to an elevator guide. On one side of the guide there is a shoe, while on the other side there is a braking system that includes a braking element such as a roller or shoe, the function of which is to wedge itself into the shoe, trapping in this movement of wedging to the guide located between the braking element and another shoe and thereby securing the car or counterweight against the guide.
- the activation system is provided with a roller activation plate and an electromagnet to activate and deactivate the system. Unlike the state of the art, the electromagnet does not act on the activation plate directly, but on a trigger associated with the activation plate.
- the operation of the device is based on the displacement of the activation plate to produce the movement of the roller and therefore the wedging.
- the electromagnet When the elevator is operating normally, with the car moving along the guides, the electromagnet is powered, acting on the trigger and causing the activation plate to stay away from the guide and therefore also the roller.
- the electromagnet when the system is activated, the electromagnet is deactivated, the trigger releases the plate by the action of a spring and the plate moves towards the guide by means of its activation spring (element known from the state of the art ) causing the roller to approach it and the so-called wedging occurs.
- a cam whose movement is synchronized with the trigger, there is also a stand-by position in which the trigger pivots, but does not completely release the plate.
- the braking system comprises two rollers joined by a connecting plate.
- the activation plate does not act directly on the parachute roller, but it does so through another roller and a plate connecting both rollers.
- the connecting plate between rollers is in turn connected to a synchronization mechanism between parachutes.
- the activation system described is designed to carry out an emergency braking of a car or counterweight that can be moved longitudinally along at least one vertical guide (1), securing it on said guide (1) to avoid uncontrolled movements or falls due to the action of gravity.
- the invention comprises:
- the activation plate 2 moves with respect to the guide 1. In some implementations it does so in a pivotal manner around an articulation perpendicular to the plane of the figure at a first end. In other implementations, this displacement can be linear ( Figure 5 ). At one end the plate 2 comprises a protruding element, for example a shaft 4 that cooperates with the trigger 5. The trigger 5 in turn is provided with the first spring 6. When the elevating device moves normally along the guide 1, the electromagnet 8 remains powered and in this way the braking system is at rest.
- the electromagnet exerts a force such that, despite the force of the spring 6, it allows the trigger 5 to be held in a position that holds the activation plate 2 through the shaft 4, separating it from the guide and therefore also separating the roller 8.
- the braking system is therefore inactive.
- Figures 2a-2c illustrate an operating sequence of the device described above.
- the braking system is in the rest position, with the car moving normally along the guide 1 and the electromagnet 8 being powered.
- the electromagnet is deactivated and the trigger 5, as a consequence, pivots by the action of the spring 6 as seen in figure 2b .
- the cam 7 impacts with its end on the guide 1 but is kept horizontal by means of the action of another spring 9.
- the braking system is in the "stand-by" or holding position, wherein the haft 4 is not fully released.
- Trigger reset occurs easily when electromagnet 8 is powered again after wedging has occurred.
- the parachute 10 is in another position.
- the activation plate 2 is in contact with a roller 3' attached to the parachute roller 3 through a connecting plate 11.
- the operation of the trigger and the cam are the same as in the previous implementation.
- the connecting plate between rollers 11 is adapted to be connected to a synchronization mechanism between parachutes ( Figure 4 ).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Control And Safety Of Cranes (AREA)
- Load-Engaging Elements For Cranes (AREA)
Description
- The present invention belongs to the technical field of elevator safety. More specifically, the invention relates to an activation system for electronically activated parachutes.
- Among the emergency braking devices for elevating devices, those known as parachutes prevent the free fall and/or uncontrolled movement of the car by immobilizing it on the guides through which it moves. The parachute is in charge of stopping and securing the car or counterweight on the guides by means of a friction force that is generated when said parachute acts on the guides. Traditionally, parachute activation has been carried out by means of a speed limiting element of a mechanical type which, in the event of excess speed of the car, is blocked and causes said activation.
- There are variants prepared to work without a mechanical speed limiter, instead using electronic safety devices to detect emergency situations and electronically activate parachutes. An example can be found in
application EP1902993A1 , which describes a braking device for an elevator car guided in a gap along guides, in which a roller is the braking element that is placed between the guide and a wedging block for immobilizing the car. This roller (in other examples it can be a shoe) is kept away from the guide by virtue of the action of an electromagnet and an activation plate provided with a guide element for the roller. When the electromagnet is deactivated, an activation spring brings the plate and therefore the roller towards the guide. In the active position the activation plate brings the roller into contact with the guide to cause wedging, while in the non-active position the electromagnet keeps the braking element separate from the guide. - The main disadvantage of the braking devices disclosed in
EP1902993 orUS2011226560 is their high energy consumption. - The object of the invention consists of a system for activating the parachute of elevating devices being electromechanically actuated and involving lower energy consumption, since it can be maintained in a stand-by or holding condition in which the electromagnet consumption is zero. The parachute is attached to a car or counterweight and is located in proximity to an elevator guide. On one side of the guide there is a shoe, while on the other side there is a braking system that includes a braking element such as a roller or shoe, the function of which is to wedge itself into the shoe, trapping in this movement of wedging to the guide located between the braking element and another shoe and thereby securing the car or counterweight against the guide. The activation system is provided with a roller activation plate and an electromagnet to activate and deactivate the system. Unlike the state of the art, the electromagnet does not act on the activation plate directly, but on a trigger associated with the activation plate.
- The operation of the device is based on the displacement of the activation plate to produce the movement of the roller and therefore the wedging. When the elevator is operating normally, with the car moving along the guides, the electromagnet is powered, acting on the trigger and causing the activation plate to stay away from the guide and therefore also the roller. On the contrary, when the system is activated, the electromagnet is deactivated, the trigger releases the plate by the action of a spring and the plate moves towards the guide by means of its activation spring (element known from the state of the art ) causing the roller to approach it and the so-called wedging occurs. By the action of a cam whose movement is synchronized with the trigger, there is also a stand-by position in which the trigger pivots, but does not completely release the plate. In this way it can be kept in this state without any consumption and it is possible to reset the system simply by powering the electromagnet again. If there were a movement of the car during rest, the cam and therefore the trigger would pivot, totally releasing the plate, thus causing the movement of the roller and wedging.
- In a second particular implementation, the braking system comprises two rollers joined by a connecting plate. The activation plate does not act directly on the parachute roller, but it does so through another roller and a plate connecting both rollers.
- In a third implementation, the connecting plate between rollers is in turn connected to a synchronization mechanism between parachutes.
- To complement the description that is being made and in order to help a better understanding of the features of the invention, according to a preferred example of a practical embodiment thereof, a set of drawings is attached as an integral part of said description, wherein with an illustrative and non-limiting nature, the following has been represented:
-
Figure 1 .- Shows a view of the electromechanical parachute device of the invention in a first implementation. -
Figures 2a-2e .- Show a front view of the device during rest, stand-by and wedging. -
Figure 3 .- Is a view of a second implementation in which the braking element comprises two rollers joined by a connecting plate. -
Figure 4 .- Is a perspective view of a third implementation. -
Figure 5 .- Shows an implementation in which the movement of the activation plate with respect to the guide is linear instead of pivoting. - A detailed explanation of various embodiments of the present invention is provided below, with the aid of the aforementioned figures.
- The activation system described is designed to carry out an emergency braking of a car or counterweight that can be moved longitudinally along at least one vertical guide (1), securing it on said guide (1) to avoid uncontrolled movements or falls due to the action of gravity.
- In a first implementation shown in
figure 1 , the invention comprises: - a system for activating a
parachute 10 provided with a braking element, which can be a shoe or, as shown in the drawings, awedging roller 3, wherein the activation system comprises: - an
activation plate 2 of theroller 3, movable with respect to the guide of the elevating device; - an
electromagnet 8 - a
trigger 5 that cooperates with theactivation plate 2 through a protruding element (4) of said plate (a notch, hook or shaft, for example), wherein theelectromagnet 8 is adapted to act on thetrigger 5 and hold the trigger in the position in which said trigger keeps the activation plate away from the guide when the electromagnet is powered, - a
first spring 6, which exerts a force opposite to that of theelectromagnet 8 on thetrigger 5 - a
cam 7 connected at one end to thetrigger 5 and provided with means, for example, a second spring or ring, or amagnet 9, which act on the cam, keeping it in a horizontal position at all times, except when it is in contact with the guide, at which time the cam pivots by friction with said guide. - With reference to the figures, the
activation plate 2 moves with respect to theguide 1. In some implementations it does so in a pivotal manner around an articulation perpendicular to the plane of the figure at a first end. In other implementations, this displacement can be linear (Figure 5 ). At one end theplate 2 comprises a protruding element, for example ashaft 4 that cooperates with thetrigger 5. Thetrigger 5 in turn is provided with thefirst spring 6. When the elevating device moves normally along theguide 1, theelectromagnet 8 remains powered and in this way the braking system is at rest. The electromagnet exerts a force such that, despite the force of thespring 6, it allows thetrigger 5 to be held in a position that holds theactivation plate 2 through theshaft 4, separating it from the guide and therefore also separating theroller 8. The braking system is therefore inactive. -
Figures 2a-2c illustrate an operating sequence of the device described above. Infigure 2a the braking system is in the rest position, with the car moving normally along theguide 1 and theelectromagnet 8 being powered. - Once the stop of the elevating device or an emergency has been detected, the electromagnet is deactivated and the
trigger 5, as a consequence, pivots by the action of thespring 6 as seen infigure 2b . In turn, thecam 7 impacts with its end on theguide 1 but is kept horizontal by means of the action of anotherspring 9. At this moment, the braking system is in the "stand-by" or holding position, wherein thehaft 4 is not fully released. - In
figure 2c it can be seen how, at the moment in which a movement of the car occurs, thecam 7 pivots in contact with the guide. The force exerted by the second spring orelastic ring 9 is overcome and thecam 7 pivots, dragging thetrigger 5, allowing theshaft 4 to be completely released. At this time theactivation plate 2 is free, so it approaches theguide 1 pushing theroller 3. The elevating device is therefore safe because wedging occurs. Said wedging occurs as described in the state of the art section and can be seen inFigures 2d and 2e . - Trigger reset occurs easily when
electromagnet 8 is powered again after wedging has occurred. - In a second implementation shown in
Figure 3 , theparachute 10 is in another position. Theactivation plate 2 is in contact with a roller 3' attached to theparachute roller 3 through a connectingplate 11. The operation of the trigger and the cam are the same as in the previous implementation. - In a third implementation, in the event that the apparatus has more than one parachute, the connecting plate between
rollers 11 is adapted to be connected to a synchronization mechanism between parachutes (Figure 4 ).
Claims (7)
- Electromechanical parachute activation system for elevating devices equipped with a braking element (3), wherein the activation system further comprises:- an activation plate (2) for said braking element (3), movable with respect to a guide of the elevating device (1);- an electromagnet (8);wherein the activation system is further provided with:- a trigger (5) adapted to cooperate with the electromagnet (8) and with the activation plate (2) through a protruding element of the activation plate (4), characterized in that the activating system further comprises:- a first spring (6) adapted to exert a force opposite to that of the electromagnet (8) on the trigger,- a cam (7) attached to one end of the trigger (5) and provided with actuation means (9) that hold the cam in a horizontal position at all times, except when it is in contact with the guide;- wherein the trigger (5), the first spring (6), the cam (7) and the actuation means (9) cooperate so that when the electromagnet (8) is activated, the trigger blocks the movement of the protruding element (4) separating the plate (2) from the guide, when the electromagnet is not activated, the first spring (6) exerts a force such that the trigger (5) pivots on the protruding element (4) causing the cam (7) to contact the guide but without releasing the protruding element (4) and when there is a movement of the car, the cam (7) pivots on the guide so that the trigger (5) releases the protruding element (4).
- Electromagnetic parachute activation system according to claim 1, characterized in that the plate is pivotal and the protruding element (4) is a shaft arranged at an end opposite to an axis on which the activation plate (2) pivots.
- Electromagnetic parachute activation system according to any of claims 1 or 2, characterized in that the braking element is a first roller (3).
- Electromagnetic parachute activation system according to claim 3, characterized in that the parachute comprises a second roller (3') joined to the first roller (3) by a connecting plate (11), the second roller (3') being joined to the activation plate (2).
- Electromagnetic parachute activation system according to claim 4, characterized in that the connecting plate (11) between the first and the second roller is adapted to be connected to a synchronization mechanism between parachutes of the elevating device.
- Parachute comprising the electromagnetic parachute activation system according to claims 1-3.
- Elevating device comprising the electromechanical parachute activation system according to claims 1-5.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES202130121A ES2921363B2 (en) | 2021-02-16 | 2021-02-16 | Electromechanical activation system for parachute of lifting devices |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4043379A1 EP4043379A1 (en) | 2022-08-17 |
EP4043379B1 true EP4043379B1 (en) | 2023-03-15 |
Family
ID=80682606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22382120.8A Active EP4043379B1 (en) | 2021-02-16 | 2022-02-15 | Electromechanical parachute activation system for an elevator apparatus |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP4043379B1 (en) |
ES (2) | ES2921363B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202022100182U1 (en) * | 2022-01-13 | 2022-01-20 | Wittur Holding Gmbh | Trigger unit for actuating an elevator braking device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62275987A (en) * | 1986-05-20 | 1987-11-30 | 大成建設株式会社 | Elevator device |
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 |
BR112012023027B1 (en) * | 2010-03-18 | 2020-12-15 | Inventio Ag | BRAKE FOR ASSEMBLY IN AN ELEVATOR ELEVATOR CABIN, PROCESS FOR BRAKING AN ELEVATOR CABIN AND ELEVATOR SYSTEM |
CN105531219B (en) * | 2013-09-11 | 2018-10-26 | 奥的斯电梯公司 | Brake apparatus for braking lifting object relative to guiding elements |
DE102013111385A1 (en) * | 2013-10-15 | 2015-04-16 | Manfred Lienemann | Tripping device of a safety gear for an elevator car of an elevator installation |
WO2015058663A1 (en) * | 2013-10-22 | 2015-04-30 | 邹家春 | Elevator rail clamping apparatus |
WO2020234490A1 (en) * | 2019-08-29 | 2020-11-26 | Dynatech, Dynamics & Technology, S.L. | Electromechanical activation of a unidirectional emergency stop device for a lift |
-
2021
- 2021-02-16 ES ES202130121A patent/ES2921363B2/en active Active
-
2022
- 2022-02-15 EP EP22382120.8A patent/EP4043379B1/en active Active
- 2022-02-15 ES ES22382120T patent/ES2944833T3/en active Active
Also Published As
Publication number | Publication date |
---|---|
ES2944833T3 (en) | 2023-06-26 |
ES2921363B2 (en) | 2023-04-14 |
ES2921363A1 (en) | 2022-08-24 |
EP4043379A1 (en) | 2022-08-17 |
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