• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an elevator installation with a smooth wall, of the type comprising a car and a multi-beam safety photoelectric barrier device, comprising a first transmitter-receiver pair of photoelectric cells, arranged at the level of the entrance bay of the cabin, and a safety circuit capable of carrying out safety checks on the operation of the cells, said circuit being in communication with a control device, so as to control a cut-off of the power supply to a brake of the installation in order to set when the car is stationary in the event of detection of a break in one of the beams and/or an operating failure of the cells, characterized in that the said safety barrier device comprises a second transmitter-receiver pair of photoelectric cells extending parallel and adjacent to the first transmitter-receiver pair and in that said safety circuit is remote outside the cells of the first and s second transmitter-receiver pairs.
    公开号:BE1028490B1
    申请号:E20215557
    申请日:2021-07-16
    公开日:2022-02-15
    发明作者:Stéphane Reau；Francis Colfs
    申请人:Sodimas；
    IPC主号:
    专利说明:

    [0001] [0001] The subject of the invention is a so-called smooth-walled elevator installation, characterized by the absence of a cabin door.
    [0002] [0002] It is known that under certain conditions, in particular low speed, typically limited to 0.60 meters per second, the installation of so-called smooth-walled elevators, characterized by the absence of a door, has been accepted in the past. cabin and the use of simple landing doors. The cabin is thus equipped with an entrance bay, possibly fitted with security grilles as a cabin door. The interior faces of the various landing doors are flush with the interior surface of the elevator shaft to form a smooth continuous wall opposite which the cabin moves with a minimum of play. Contacts associated with the landing doors check that all these doors are closed and authorize the movement of the car inside the shaft.
    [0003] [0003] While this type of installation has the advantage of being extremely economical and very compact, it does not, on the other hand, have the safety required by the standards in force for users. Thus, lift cabins, not fitted with cabin doors and moving in front of smooth continuous walls, have been the cause of serious accidents resulting, for example, from jamming between the smooth continuous wall and the elements forming the opening entrance to the cabin or linked to the tilting of a load attached to the smooth continuous wall.
    [0004] [0004] For this reason, in certain European countries where this type of installation was accepted, regulatory provisions have made it mandatory to convert all existing installations of this type to make them compliant with safety standards, in particular by addition of cabin doors.
    [0005] [0005] Thus, in France for example, as early as 1986, the legislator prohibited the installation of elevators without a cabin door and required the cabins of existing elevators, not equipped with a door to
    [0006] [0006] In addition, old elevator installations can often be of heritage interest and it turns out that the desire to place cabin doors is often not shared by many owners or set of co-owners. The support of associations of architects, the defense of heritage and the protection of monuments and sites, leads professionals to reflect on how to preserve this industrial wealth while guaranteeing safety for users.
    [0007] [0007] It is therefore in this context that devices have been developed with a level of safety equivalent to that resulting from the installation of a cabin door.
    [0008] [0008] These known safety devices installed on elevators whose car has no car door, consist of multi-beam immaterial safety barriers, comprising photoelectric cells forming an assembly consisting of a transmitter-receiver pair of cells, the transmitter and the receiver being arranged facing each other over a respective free height extending on either side of the entrance bay of the cabin.
    [0009] [0009] During normal movement of the cabin, nothing is supposed to interfere with the light beams and the cells on the receiver side each receive the light beam from the corresponding cell on the side
    [0010] [0010] Devices of this type meet the standard for programmable electronic systems in applications related to the safety of lifts, known as PESSRAL systems (Programmable Electronic components and Systems in Safety Related Applications for Lifts), which imposes a minimum level of safety integrity of each electrical safety device.
    [0011] [0011] In fact, in the context of the safety of elevator movement systems, the reliability of these systems and the robustness of their control models in the event of failure or malfunction are essential. Typically, PESSRALs must comply with the design rules for the relevant safety integrity levels given in EN 81-50:2014. Safety integrity levels, known as SIL (Safety Integrity Level), measure the safety integrity of the safety-related control functions to be allocated to the system. In the elevator domain, safety integrity level 3 has the highest degree of integrity and level 1 has the lowest.
    [0012] [0012] In particular, to meet the safety requirements required in the field of the lift, the safety devices of the light curtain type, which have been approved by the legislator, are based on the use of cells integrating a high level of security and, in particular, which are at least type 4 according to the NF EN 61496 standard or which meet the SIL3 requirements according to the NF EN 61508 standard. French regulations, meet these requirements.
    [0013] [0013] The measures implemented to meet the requirements of the standards concern both the hardware and software aspects, and are aimed in particular at
    [0014] [0014] Also, an object of the invention is to guarantee fault-free operation of a so-called smooth-walled elevator installation of the aforementioned type, which is provided with a level of integrity in terms of safety in accordance with the standards in force, while taking into account the objectives of reducing installation costs, as well as robustness and scalability, without compromising the ability to detect and identify faults.
    [0015] To this end, the present invention relates to an elevator installation comprising an electric drive motor, a linear drive element driven by the motor, a cabin driven by the linear drive element inside of a sheath, the cabin comprising an entrance bay without a cabin door, opposite a smooth wall of the sheath, at least one electromagnetic brake, under current failure, for blocking the shaft of the motor, and a multibeam safety photoelectric barrier device, comprising a first transmitter-receiver pair of photoelectric cells, the transmitter and the receiver being arranged facing each other over a free height extending on either side on the other side of the entrance bay of the cabin, said safety barrier device comprising at least one safety circuit capable of carrying out safety checks on the operation of the cells, said safety circuit being in communication with ec a control device for a control cabinet of the installation, so as to control a break in the power supply to the brake in order to bring the car to a halt in the event of detection of a break in at least one beams and/or cell operating failure linked to an evaluation of said safety circuit, said installation being characterized in that said safety barrier device comprises at least a second transmitter-receiver pair of 5 photoelectric cells extending in parallel and adjacent to the first transmitter-receiver pair and in that said safety circuit is offset outside the cells of the first and second transmitter-receiver pairs.
    [0016] [0016] Advantageously, said safety circuit is capable of ensuring permanently a control of the operating parity of the cells of the first and second transmitter-receiver pairs.
    [0017] [0017] Advantageously, the safety circuit comprises connection terminals to various control and/or state indication inputs for the cells of the first and second transmitter-receiver pairs, a control module electrically connected to said terminals, this module control being arranged to control the consistency of the states of the different cells of the first and second transmitter-receiver pairs, and at least one relay module suitable for interrupting the power supply to the brake in order to bring the car to a halt in the event detection of an operating failure.
    [0018] Preferably, said relay module comprises a plurality of relays.
    [0019] [0019] Advantageously, said safety circuit complies with standard EN 81-20.
    [0020] Advantageously, the cells of the first and second transmitter-receiver pairs have a safety integrity level lower than the SIL3 integrity level, advantageously an SIL2 integrity level.
    [0021] [0021] Advantageously, the cabin entrance bay is equipped with at least one safety grid, said first and second transmitter-receiver pairs of photoelectric cells being arranged immediately upstream or downstream of said safety grid with respect to in the direction of exiting the cabin.
    [0022] Preferably, said safety circuit is arranged in said installation control cabinet.
    [0023] Other characteristics and advantages of the invention will emerge clearly from the description which is made of it below, by way of indication and in no way limiting, with reference to the appended drawing in which:
    [0024] [0024] [Fig. 1] is a flow chart relating to the safety functions implemented by lift installation according to the invention.
    [0025] [0025] The elevator installation according to the invention therefore relates to an elevator installation with a smooth wall, comprising an elevator car and possibly a counterweight, capable of moving vertically from floor to floor in a shaft. an equipped building. The cabin has an entrance bay, opposite a smooth wall of the shaft, which has no cabin door and can optionally be fitted with a security grid, as a cabin door.
    [0026] This installation corresponds to a nominal operating speed, for example equal to or less than 0.60 m/s.
    [0027] [0027] An electric motor makes it possible to drive in motion a drive element, for example a cable or a belt, from which the elevator car without a car door and the counterweight are suspended.
    [0028] [0028] The installation is also provided with at least one electromagnetic brake which, in the normal operating mode of the installation, is powered by an electrical power supply when the car is moving. The brake is undercurrent, i.e. in the unpowered state, it blocks the rotation of the motor shaft to bring the car to a halt.
    [0029] [0029] A control device, comprising for example a microcontroller or another processor, installed in a control cabinet of the installation, is in communication with the cabin call buttons and the level request buttons, which can conventionally equip elevator facilities.
    [0030] [0030] The control device is also in communication with the motor and with the brake.
    [0031] [0031] In particular, the control device, driven by an appropriate control input, is designed to control a circuit for cutting off the power supply to the brake so as to interrupt the power supply to the brake in order to bring it to a stop. of the cabin, for example in the event of an emergency cut-off.
    [0032] [0032] As explained in the preamble, to compensate for the absence of a cabin door at the level of the entrance bay of the cabin, while satisfying the requirements of the standards in force in terms of elevator safety, the cabin is equipped with a multibeam safety photoelectric barrier device, comprising a first emitter-receiver pair of photoelectric cells, the emitter and the receiver being arranged facing each other over a respective clear height extending on either side of the cabin entrance bay, preferably over the full height of the entrance bay. Thus, the first transmitter-receiver pair is made up of a vertical row of transmitting photoelectric cells and a vertical row of receiving photoelectric cells, arranged facing each other at the entrance bay of the cabin in such a way to make it possible to detect any passage through this entry bay.
    [0033] According to the invention, this safety barrier device comprises at least a second transmitter-receiver pair of photoelectric cells, with the same arrangement of cells as the first transmitter-receiver pair. This second transmitter-receiver pair of photoelectric cells extends parallel to and adjacent to the first transmitter-receiver pair. Thus, the safety barrier device consists of at least one double curtain of cells arranged along at least two successive parallel planes, at the entrance bay of the cabin, each curtain of cells consisting of a couple photoelectric cell transceiver.
    [0034] [0034] If the cabin entrance bay is equipped with a security grid as a cabin door, the first and second transmitter-receiver pairs of photoelectric cells are preferably arranged immediately upstream of the security grid by report in the sense of
    [0035] The control device of the installation control cabinet, controlled by an appropriate control input, is also designed to control the power supply to the cells of the safety barrier device, when the installation is in operation. . In particular, the cells switch to the powered state when authorization checks before departure from the cabin have been carried out, including for example the checking of the closing of the lock of the security grid, after passenger access to the cabin. .
    [0036] [0036] The safety barrier device also comprises a safety circuit designed to carry out safety checks of the operation of the cells and, in particular, to permanently ensure a check of the working parity, equivalent to a safety circuit as provided by standard EN 81-20.
    [0037] [0037] Thanks to the implementation of the double curtain of cells made up of the first and second transmitter-receiver pairs of cells, the control of the operating parity can be advantageously implemented by specific electrical wiring remote from the outside of the cells. cells of the first and second transmitter-receiver pairs of cells, making it possible to ensure that the respective cells of the first and second transmitter-receiver pairs of cells indeed provide the same information, so as to detect any operating failure of the cells.
    [0038] In other words, the cells only interact here via their power supply signal, without the need to share a parity signal, which advantageously minimizes the logic necessary in each cell and thus allows remote control operating parity outside the cells.
    [0039] According to one embodiment, the safety circuit comprises connection terminals to various control and/or state indication inputs of the cells of the first and second transmitter-receiver pairs and a control module electrically connected to these terminals, this control module being arranged to control the consistency of the states of the different cells of the first and second transmitter-receiver pairs. The safety circuit also comprises a relay module suitable for interrupting the power supply to the brake in order to bring the cabin to a halt in the event of detection of a lack of consistency between the respective states of the cells of the first and second pairs transmitter-receiver, revealing a malfunction of the safety barrier. Thus, if the state of at least one cell of the first transmitter-receiver pair of cells is not consistent with the state of at least one corresponding cell of the second transmitter-receiver pair of cells, the relay module is switched to allow the brake supply circuit to open and thus interrupt the supply to the brake to stop the car.
    [0040] [0040] The relay module incorporates a safety fault detection function. It advantageously consists of a plurality of electromechanical relays. Thus, thanks to the redundancy of the relays, the relay module is able to check and detect any faulty relays.
    [0041] [0041] Advantageously, the safety circuit ensuring the control of the operating parity can be placed in the control cabinet of the installation.
    [0042] Thus, thanks to the implementation of the double curtain of cells made up of the first and second transmitter-receiver pairs of cells and to the control of the operating parity carried out by the security circuit remoted outside the cells, we ensures the safety of operation of the safety barrier device, with respect to possible cell failures, with much less complexity and independently of the control device of the control cabinet of the installation. Even though the safety circuit can be placed in the control cabinet, the safety checks carried out by the safety circuit are nevertheless carried out independently.
    [0043] Advantageously, the cells used in the safety barrier device of the elevator installation according to the invention comply with the requirements of the level of safety integrity of standard 61508 (Functional safety of electrical/electronic systems/ safety-related programmable electronics) of the International Commission for Electrotechnics (IEC) up to and including Safety Integrity Level 2 (SIL2). In other words, they can be used to implement safety functions up to level SIL2, in the field of lift installations. In combination with the offset of the safety circuit ensuring the control of the operating parity outside the cells, it is nevertheless possible to obtain an overall level of safety integrity SIL3.
    [0044] Thus, thanks to the arrangement of the invention, the safety barrier device combines the advantages of using Sick cells or equivalent on the market and their integrated safety control, but in a simpler environment. , with, overall, an equivalent level of safety integrity.
    [0045] [0045] When a security gate is present, it is conventionally provided with a lock and with a control member for this lock, of the mobile cam type, the function of which is to act on the lock to perform the unlocking, but only when the car stops at a predetermined unlocking zone. The mobile cam is electrically actuated and is controlled in a locking position of the lock in the event of the car stopping outside the unlocking zone.
    [0046] [0046] To further reinforce the overall safety of the installation, when the car stops outside the unlocking zone, the movable cam actuating the lock of the safety grid is maintained in the locking position of the lock in case of detection of the breaking of at least one of the beams of the safety barrier device. Thus, in the event of the car stopping outside the unlocking zone, if a passenger were to cut one of the cell bundles of the safety barrier device, with his hand for example, to try to open the safety manually, the subsequent command to cut off the supply to the brake of the installation, prevents any movement of the cabin and thus makes it possible to avoid any risk of accident in this situation.
    [0047] [0047] Figure 1 illustrates a flowchart relating to the security functions implemented by the elevator installation according to the invention, in the case where a security grid is present.
    [0048] In an initial phase EO, called rest, the photoelectric cells of the barrier device are in the unpowered state and the movable cam is in a position for unlocking the lock of the security grid.
    [0049] Once the cells are powered, a cell operating parity control phase E5 is triggered, implemented by the security circuit of the security barrier device which will assess the operating safety of the security barrier device. safety according to the principles set out above.
    [0050] [0050] If the evaluation of the safety circuit leads to the detection of an operating failure of the cells, a phase E6 of interrupting the power supply to the brake is implemented via the relay module of the safety circuit, which prevents any displacement of the cabin.
    [0051] On the other hand, if the evaluation of the dependability is positive, then a phase E7 for authorization to move the cabin is triggered. Advantageously, after departure from the car, the safety circuit is provided to ensure permanent control of the operating parity of the cells of the safety barrier device.
    Also, at the end of the authorization phase, we loop back to the ES phase.
    权利要求:
    Claims (1)
    [1]
    : : BE2021/5557 Claims [Claim 1] Elevator installation comprising an electric drive motor, a linear drive element driven by the motor, a cabin driven by the linear drive element inside a sheath, the cabin comprising an entrance bay without a cabin door, facing a smooth wall of the sheath, at least one electromagnetic brake, under current failure, for locking the motor shaft in rotation, and a multibeam safety photoelectric barrier device, comprising a first emitter-receiver pair of photoelectric cells, the emitter and the receiver being arranged facing each other over a free height extending on either side another of the cabin entrance bay, said safety barrier device comprising at least one safety circuit able to carry out safety checks on the operation of the cells, said safety circuit being in communication with a device for controlling a control cabinet of the installation, so as to control a break in the power supply to the brake in order to bring the car to a halt in the event of detection of a break in at least one of the beams and/or cell operating failure linked to an evaluation of said safety circuit, said installation being characterized in that said safety barrier device comprises at least a second transmitter-receiver pair of photoelectric cells extending parallel and so adjacent to the first transmitter-receiver pair and in that said safety circuit is remote outside the cells of the first and second transmitter-receiver pairs. [Claim 2] Installation according to Claim 1, characterized in that the said safety circuit is adapted to ensure permanent control of the operating parity of the cells of the first and second transmitter-receiver pairs. [Claim 3] Installation according to claim 2, characterized in that the safety circuit comprises connection terminals to various control and/or state indication inputs of the cells of the first and second transmitter-receiver pairs, a module control module electrically connected to said terminals, this control module being arranged to control the consistency of the states of the various cells of the first and second transmitter-receiver pairs, and at least one suitable relay module BE2021/5557 to interrupt the power supply to the brake to carry out the shutdown of the cabin in the event of detection of an operating failure. [Claim 4] Installation according to claim 3, characterized in that said relay module comprises a plurality of relays.
    [Claim 5] Installation according to any one of the preceding claims, characterized in that the cells of the first and second transmitter-receiver pairs have a level of safety integrity lower than the level of integrity SIL3, advantageously a level of integrity SIL2.
    [Claim 6] Installation according to any one of the preceding claims, characterized in that the entrance bay of the cabin is equipped with at least one safety grid, said first and second transmitter-receiver pairs of photoelectric cells being arranged immediately upstream or downstream of said safety grid with respect to the exit direction of the cabin.
    [Claim 7] Installation according to any one of the preceding claims, characterized in that the said safety circuit is arranged in the said installation control cabinet.
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    同族专利:
    公开号 | 公开日
    BE1028490A1|2022-02-08|
    FR3112533A1|2022-01-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    NL2012804B1|2014-05-13|2016-02-29|Geurts/Kempen Holding B V|Elevator equipment.|
    CN110594570A|2019-09-19|2019-12-20|邱继平|Safety grating for detecting object moving direction and detection control method thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR2007507A|FR3112533A1|2020-07-17|2020-07-17|Installation of elevators|
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