RU2459760C1 - Elevator brake control device, elevator brake and elevator braking system - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to elevator safety control means. Control device 100 is used for testing elevator brake including first and second electromagnetic drives, first and second brake elements, first and second cores, first and second springs. Elevator brake control device 100 comprises control circuit 110, first and second contact 112, 114 to feed first and second signals to drives 26, 30 of brake 10. Control device 100 may operate in normal conditions when said signals are fed in synchronism, in testing of every brake element when one of signals, first or second, is fed to appropriate electromagnetic drive 26, 30 while brake element constant release signal is fed to the other drive 26, 30.

EFFECT: higher safety, simplified testing.

16 cl, 4 dwg

Description

FIELD OF THE INVENTION

The present invention relates to an elevator brake control device, an elevator brake, and an elevator brake system.

State of the art

In accordance with the existing standards for elevator systems and brake systems for elevators, elevators must be equipped with a brake system, as well as a backup brake system. For example, the European standard EN 81, which relates to the installation of elevators without a machine room, requires that all mechanical components of the brake involved in the application of braking force to the drum or disk be installed in two sets. Each of the brake kits is required to be able to develop a braking force sufficient to delay the cab moving, for example, down at rated speed and at rated load, in case the other brake kit does not work.

Therefore, the performance of the brake sets must be checked not only with the combined action of both brake sets, but also for each of them separately. This so-called test of each brake element separately requires temporarily, for the period of the test, to hold the brake element of one of the brake sets constantly released (i.e., in the depressed state) from the brake disc or drum, while controlling the operation of the brake element another brake kit in accordance with its normal mode of operation.

Currently, the retention of one of the brake elements in the released state is performed mechanically. The mechanical means is connected to the brake element, which must be kept in the released state. This is relatively uncomplicated for an elevator having a machine room in which easy access to the brake is provided. However, for elevators that do not have a machine room, the winch has to be installed in the elevator shaft, usually in the upper or lower part of the shaft, and therefore access to the elevator brake for using such a mechanical means of releasing the brake element is often hampered by the need for a person to exit to the roof of the cabin and move cabs in a position in which it is possible to have access to the elevator brake. Therefore, testing each brake element individually becomes very difficult.

Proposals were made to introduce certain types of mechanical connection (for example, Bowden cables) between a winch with brake sets and accessible locations convenient for the continuous release of the brake element. Such a proposal, aimed at ensuring that the elevator car is moved to a safe position in the event of an emergency, for example, if the elevator car is stuck in the elevator shaft, is given, for example, in patents US 6021872, US 6520299, US 6817453. However, such mechanical connections have several disadvantages, in particular due to the fact that there are restrictions on the establishment of such mechanical bonds, for example, the maximum distance and / or that the bending radius must be appropriate due to friction and / or limited mechanical wear resistance oh connection, such as a bowden cable.

US Pat. No. 5,199,532 proposes the introduction of an auxiliary solenoid capable of releasing the brake element of an elevator brake in case the main means, such as a solenoid, does not release the brake element if necessary.

Therefore, it would be desirable to have a more convenient possibility of transferring the elevator system to the layout or condition required for each brake element to be tested individually, in particular, to provide the ability to constantly release the brake element of one of the brake sets of the elevator brake without having to have direct access to the elevator brake.

Disclosure of invention

The present invention describes an elevator brake control device including a control circuit configured to provide a first signal to request a release of a first brake element, a second signal to request a release of a second brake element, and a constant signal to request a release of a first and second brake element, a first contact for outputting a first signal to a first electromagnetic brake actuator and a second contact for outputting a second signal to a second electromagnetic brake actuator, and with the possibility of working at least in the normal mode, in which the first and second signals are fed synchronously to the first and second electromagnetic drives, respectively, and in the test mode of each brake element individually, in which one of the signals, the first or second, is supplied to the corresponding electromagnetic drive, and a constant release signal of the corresponding brake element is supplied to another of these drives.

Additionally, the device may comprise a third contact, to which a continuous release signal of the first and / or second brake element can be supplied.

The control circuit may comprise a brake control unit for dispensing the first and second brake elements during normal operation and may be configured to provide a signal to the output of the brake control unit, connected in parallel with the first and second contacts with the possibility of supplying said first and second signals.

Also, the control circuit may further comprise a brake power unit, configured to supply a power signal with a power corresponding to the supplied power to said first and / or second electromagnetic drives to release said first and / or second brake element.

The device may also include means for supplying a power signal to the specified output of the brake control unit when the indicated control circuit determines whether the first and / or second brake element needs to be released and means for continuously supplying the power signal to the specified third contact.

The device may further include a detachable unit mounted with the possibility of connecting to the electromagnetic brake actuators and containing on the control circuit a group of first connectors equipped with a group of contacts including a first contact and / or a second contact, and at least one second connector on the side of the brake, each of these first connectors is made with one pinout corresponding to the pinout of the second connector, and at least one of the first connectors may contain the specified third kt.

Each mode selected from the group including normal operation, the test mode of the first brake element and the test mode of the second brake element can correspond to one of the group of first connectors, while one second connector can be installed with the possibility of connection to the first and second drives and one of the first connectors corresponding to the operating mode.

The first connectors can be made able to be connected with each of the drives, the first and second during normal operation, the additional first connector is made to test a separate brake element, and the corresponding second connectors are made to be connected to the first and second drive and connected in accordance with the operating mode or to the corresponding one of the first connectors during normal operation, or to the specified additional first connector.

The device may also contain means for controlling the tempering and engagement of the first and second brake elements and can be configured to turn off the monitoring means upon receipt of a request to switch to the test mode of the brake element and allow a certain number of runs of the elevator car stopped by the specified brake.

The present invention also describes an elevator brake comprising a first electromagnetic drive, a first brake element mounted to move by means of the first spring means to the engaged position with the brake surface and comprising a first core coupled to the electromagnetic drive to disengage the first brake element from said brake surface to overcome the biasing forces of the first spring means, the second electromagnetic drive and the second brake el cop mounted movably by second spring means to a position of engagement with the braking surface and including a second core, associated with an electromagnetic actuator to output a second brake element out of engagement with said braking surface with overcoming the biasing force of the second spring means.

The first and second cores can be mounted coaxially and have a shape defined by an axis.

The first and second cores may have a ring shape.

The first brake element may comprise a first housing provided with a first groove in which the first electromagnetic drive is located, and the second brake element may comprise a second housing provided with a second groove in which the second electromagnetic drive may be located.

Said first housing and said second housing may be integrally formed.

The specified first spring means may contain a group of first springs located along the circumference of the axis, at equal angular distances from each other in the recesses made in the first body, and the specified second spring means may contain a group of second springs located along the circumference, around the specified axis, at equal angular distances from each other in the recesses made in the second housing.

In addition, the present invention describes an elevator braking system including an elevator control device that can be configured as described above and an elevator brake that can be configured as described above.

Brief Description of the Drawings

The invention will now be described in more detail with reference to the accompanying drawings, in which:

figure 1 is a schematic illustration of the proposed in one embodiment of the invention, the elevator brake when viewed along the axis of the elevator brake;

figure 2 - brake of the elevator of figure 1 in section along the line indicated in figure 1 as II-II;

figure 3 is a block diagram of a device for controlling the brake of the elevator, proposed in one embodiment of the invention; and

4 is a block diagram of an elevator brake control device proposed in another embodiment of the invention.

The implementation of the invention

Figures 1 and 2 show a brake proposed in one embodiment, generally indicated by 10. Figure 1 shows a section of a brake 10 when viewed along axis 12, and Figure 2 shows a section along a line II-II perpendicular to axis 12 indicated in figure 1. The elevator brake 10, when viewed along the axis 12, has a circular cross section including a first or external brake element 14 and a second or internal brake element 16.

The first brake element 14 comprises a first or outer casing 18 and a first or external movable brake disc or core 20. The first electromagnetic drive 26, which is the first coil, and the first spring element 28a, 28b, 28c, 28d (spring means) in the form of a coil spring introduced so as to displace the first brake element 14 by the first spring element 28a, 28b, 28c, 28d before engaging with the brake surface formed by the stationary brake disk 34 and the brake pads 36. The brake pads are formed They are mounted by a disc 36a and brake linings 36b, 36c, 36d, 36e glued to the flat sides of the disc 36a. The brake linings form a group of first or external brake linings 36b, 36c included in the first brake element 14, and a group of internal or second brake linings 36d, 36e included in the second brake element 16.

The first core 20 is mounted so that it can be driven by the first electromagnetic drive 26, which disengages the first brake element 14 from the brake surface, overcoming the biasing force exerted by the first spring elements 28a, 28b, 28c, 28d.

The second brake element 16 comprises a second or inner housing 22 and a second or internal movable brake disc or core 24. A second electromagnetic drive 30, which is a second coil, and second spring elements 32a, 28b, 28c, 28d (spring means) in the form of coil springs introduced in such a way as to be able to displace the second brake element 16 by the second spring means 32a, 28b, 28c, 28d before engaging with the brake surface formed by the stationary brake disc 34 and brake linings 36.

The second core 24 is mounted so that it can be driven by a second electromagnetic drive 30, which brings the second brake element 16 out of engagement with the brake surface, overcoming the biasing force developed by the second spring means 32a, 32b, 32c, 32d.

In FIG. 2, it can be seen that the first brake element 14, including the housing 18 and the core 20, and the second brake element 16, including the housing 22 and the core 24, have substantially the same size in the direction of their common axis 12.

When viewed in the direction of their common axis 12, as shown in FIG. 1, the first housing 18 and the second housing 22 have a circular outer periphery and a circular inner periphery. That is, both the first housing 18 and the second housing 22 have an annular shape. The first casing 18 and the second casing 22 are mounted coaxially with the circular outer periphery of the second casing 22, combined with the circular inner periphery of the first casing 18. Both the first casing 18 and the second casing 22 form a single rigid product, and both of them are one piece, or inseparably connected together. The advantage of the first and second housings in the form of an integral product is to simplify the brake attachment, since only the outer housing needs to be fixed, in particular so that it does not rotate.

In addition, the first core 20 and the second core 24 have a circular outer rim and a circular inner rim. Therefore, both the first core 20 and the second core 24 have an annular shape. The first core 20 and the second core 24 are mounted coaxially with respect to the common axis 12.

Inside the inner rim of the second body 22 and the second core 24 there is free disk-shaped space. In this space, an output shaft of a drive motor (not shown) can be arranged that extends along axis 12. In this way, an elevator brake 10 can be mounted covering the output shaft of the drive motor and thus taking up only a small space.

The disk 36a carrying the disk linings 36b, 36c, 36d and 36e is mounted on the output shaft of the drive motor, so that it rotates with this output shaft. Other components, in particular the fixed disk 34 and the first and second brake elements 14 and 16, are mounted so as to remain stationary relative to the output shaft of the drive motor.

As shown in FIG. 2, in a direction perpendicular to the common axis 12, the annular first housing 18 and the annular second housing 22 have substantially rectangular cross sections, and therefore, the first housing 18 and the second housing 22 are in the form of a flat torus or a short hollow cylinder. Similarly, as shown in FIG. 2, in the direction perpendicular to the common axis 12, the annular first core 20 and the annular second core 24 have substantially rectangular cross sections, and therefore, the first core 20 and the second core 24 are in the form of a flat torus or a short hollow cylinder .

The first electromagnetic drive 26 is inserted into an annular groove (recess) made in the first housing 18. Similarly, the second electromagnetic drive 30 is also inserted into an annular groove made in the second housing 22. Each of the grooves for receiving the first or second electromagnetic drive 26, 30 covers the common axis 12 of the housings and, therefore, is located coaxially with the first and second housing 18, 22, respectively. The cross-section of the grooves in the direction perpendicular to the common axis 12 is mainly rectangular, corresponding to the first and second electromagnetic drives 26, 30. When viewed in the radial direction, the grooves are centered relative to the first and second bodies 18, 22, respectively.

The first spring means comprises a group of first coil springs 28a, 28b, 28c, 28d arranged circumferentially around an axis 12 at equal angular distances from each other, in this example 90 °. Accordingly, the second spring means comprises a group of second coil springs 32a, 32b, 32c, 32d arranged circumferentially around the axis 12 at equal angular distances from each other, in this example 90 °. As can be seen in FIG. 1, the second coil springs 32a, 32b, 32c, 32d of the second spring means are staggered relative to the first coil springs 28a, 28b, 28c, 28d of the first spring means. The offset is 45 degrees, and therefore, each of the second coil springs 32a, 32b, 32c, 32d is installed in an angular position that is half the distance between the two subsequent first coil springs (for example, 32d is in the middle between 28d and 28a).

Figures 3 and 4 in the form of simplified block diagrams show two embodiments of the elevator brake control device shown in Figs. 1 and 2. The control device is discussed below with reference to the embodiment of Fig. 3. FIG. 4 will be considered only to the extent that the embodiment presented therein differs from the embodiment of FIG. 3.

The elevator brake control device 10 in FIG. 3, generally indicated by reference numeral 100, comprises a control circuit 110 configured to issue, upon receipt of a vacation request, a first elevator brake element (for example, a brake element indicated by 14 in FIG. 1) the first control signal and upon receipt of a request to squeeze the second brake element 16 of the elevator brake 10 (for example, the brake element indicated by 16 in FIG. 1), issue a second control signal. The control circuit is provided with a first output contact 112 for outputting the first control signal to the first electromagnetic drive 26 of the brake 10 of the elevator. To receive the first response signal, the electromagnetic actuator 26 is provided with a first input terminal 112 '. The control circuit 110 is provided with a second output terminal 114 for outputting the second control signal to the second electromagnetic drive 30 of the elevator brake 10. To receive the second response signal, the electromagnetic actuator 30 is provided with a second input terminal 114 '.

The control circuit 110 includes a brake control unit 116 configured to control, upon request, the release of the first and second brake elements 14, 16 in normal operation, providing a first and second response signal from the control circuit 110 through the first and second output contacts 112 and 114. The brake control unit 116 has a control output 118, in this example representing the output contact of a control relay 138. The output of the brake control unit 118 is parallel to the first and second output contacts 112, 114, providing Single issuing first and second response signals. The brake control unit 116 includes a brake power unit 120, which is designed to provide a level of a power signal sufficient to release the corresponding brake elements 14, 16. when the brake 10 of the elevator is applied to the drive 26, 30. The power signal is continuously supplied from the brake power unit to output 122. The brake power supply is additionally equipped with an output 136 that provides grounding for the control signals supplied to the first and second output contacts 112 and 114.

The brake control relay 138 is controlled by the brake control unit 116 with the possibility, if the first and second actuation signals are to be supplied to the first and second output contacts 112 and 114, to connect the output 118 to the output 122 of the brake power supply 120. Therefore, the output 118 is controlled by the brake control unit 116 in such a way as to provide a power signal only if the brake control unit 116 determines that there is a request for the release of the first and second brake elements 14, 16 of the elevator brake in normal operation. Otherwise, until the electric brake is released due to the actuation of the emergency release unit 140 (see below), no power signal is output from output 118, and therefore, no signal is generated to the first and second output contacts 112, 114. The control device 100 allows you to switch between normal operation, in which the first and second brake elements 14, 16 act simultaneously, and two additional test modes for each brake element separately, and names a test mode of the first braking member test mode and the second brake element. In the test mode of the first brake element, the elevator must be stopped by one first brake element 14 with the second brake element remaining constantly in the released state. On the contrary, in the test mode of the second brake element, the elevator must be stopped by one second brake element 16 with the first brake element 14 remaining constantly in the released state.

To enable switching between the aforementioned different operating modes, the control circuit 110 includes three different connectors, in this case, the connectors 124, 126 and 128, designed to supply the first and second actuation signals, respectively. All of these connectors 124, 126, 128 have the same pinout that matches the intelligence of one connector, in this case, the connector 130 of the pin portion provided on the side of the elevator brake. Each of the connectors 124, 126, 128 on the side of the control circuit 110 contains at the same places the first output terminal 112 or the second output terminal 114 and the corresponding ground contacts. Each of the first output contacts 112 and the second output contacts 114 of the connectors are connected in parallel to the output 118 of the brake control unit.

In normal operation, the connector 130 on the brake side is connected to the connector 124 on the side of the control circuit 110, as shown in the figure. To switch to the test mode of the first brake element, the connector 130 on the brake side is disconnected from the connector 124 (or 128) and connected to the connector 126 on the side of the control circuit 110 (as shown by the arrow in the figure). To switch to the test mode of the second brake element, the connector 130 on the brake side is disconnected from the connector 124 (or 126) and connected to the connector 128 on the side of the control circuit 110 (as shown by another arrow in the drawing).

In addition, the connector 126 contains a third output terminal 134 connected directly to the output 122 of the brake power unit 120, and the connector 128 also contains a third output terminal 132 connected directly to the output 122 of the brake power unit 120. In a situation where the input connector 130 on the side of the brake is connected to the connector 126 on the side of the control circuit 110, the third output terminal 134 is connected to the input terminal 114 ', and therefore, a signal is issued to the second drive 30 to continuously release the second brake element 16 On the contrary, in a situation where the input connector 130 on the side of the brake is connected to the connector 128 on the side of the control circuit 110, the third output terminal 132 is connected to the input terminal 112 'and through it the first drive 26 receives a signal for constant vacation the brake member 14. Therefore, if the connector 130 is connected to the connector 126, the second brake member continuously released, which corresponds to the first braking member test. On the contrary, if the connector 130 is connected to the connector 128, the first brake element is constantly released, which corresponds to the test mode of the second brake element.

Additionally, the control device 100 provides the release of the electric brake via the emergency release unit 140, which makes it possible to release the elevator brake in case of an emergency, for example, if the elevator car is stuck in the elevator shaft and there is no way to release the elevator brake in a regular manner. The release brake of the elevator by the emergency release unit 140 provides a power signal to the output contacts 112 and 114 in the event that the emergency brake release mode is activated (this is usually done manually by an operator acting through an appropriate mechanism, for example, in a machine room or outside the elevator shaft), and wherein the brake control relay 138 is in a state in which the output 118 is disconnected from the power supply output 122 (for example, in the event of a power failure, since the brake control relay 118 usually a normally open relay). As shown in figure 3, the relay 138 when switching to a state that disconnects the output 118 of the brake control unit from the output 122 of the power supply, at the same time connects the block 140 release the electric drive brake for emergency release to the output 118 and, therefore, the signals causing the release of the first and / or the second brake elements 14, 16 will be supplied to the output contacts 112, 114, when the drive unit 140 release electric brake for emergency release.

The control device 200 shown in FIG. 4 is basically similar to the control device of FIG. 3. Therefore, in FIG. 4, components identical to FIG. 3 are marked with the same designations as in FIG. 3 with the addition of device 100. The following description only relates to differences between the embodiments of FIG. 3 and FIG. 4. For other details, reference is made to the description of FIG. 3.

In the embodiment of FIG. 4, two connectors 230a and 230b are introduced on the brake side. A connector 230a is connected to a first electromagnetic drive 26 serving to release the first brake element 14, while a connector 320b is connected to a second electromagnetic drive 30 serving to release the second brake element 16. Three connectors 224, 226 and 228. In normal operation, connector 224 is connected to connector 230a on the brake side, and connector 226 is connected to connector 230b on the brake side. Therefore, in normal operation, the connector 224 on the side of the control circuit 210 supplies the first response signal to the first electromagnetic drive 26, and the connector 226 on the side of the control circuit 210 supplies the second response signal to the second electromagnetic drive 30.

To switch to the test mode of the first brake element, the connector 230b of the second drive 30 is disconnected from the connector 226 and connected to the connector 228, as shown by the arrow in the figure. Now, the second drive 30 receives through the third output contact 232 and input contact 214 'a response signal for the constant release of the second brake element 16. On the contrary, to switch to the test mode of the second brake element, the connector 230a of the first drive 26 is disconnected from the connector 224 and connected to the connector 228, which is indicated by another arrow in the figure. Now, the first drive 26 receives through the third output contact 232 and input contact 212 'a response signal for the continuous release of the first brake element 14.

The embodiments presented here, on the one hand, provide a convenient opportunity to transfer the elevator system from a conventional configuration to a configuration for testing a single brake element. There is no need for inconvenient access to the elevator winch or elevator brake. Management can be carried out from a convenient location or in the engine room, if necessary, or in the elevator shaft, for example, near the service platform or even in addition to the elevator shaft, for example in the maintenance room, or the like. On the other hand, switching between different operating modes, in particular, switching to the test mode of each brake element separately, requires disconnecting and switching the connectors, which entails a significant amount of work that does not allow switching to such modes, for example, by unauthorized persons or insufficient attention to the operation.

In one embodiment of the present invention, there is provided an elevator brake control device comprising a control circuit configured to supply, upon request for a first brake element release, an elevator brake of a first activation signal and, upon request for a second brake element to dispense, a second elevator brake signal of said elevator brake, a first output contact for outputting said trigger signal to a first electromagnetic drive (hereinafter also referred to as first means actuation or first drive) of said elevator brake, a second output contact for outputting said second actuation signal to a second electromagnetic actuator (hereinafter also referred to as second actuation means or second actuator) of said elevator brake, said control device being configured to provide at least the following operating modes: A) a normal operating mode in which the indicated first and second actuation signals are supplied synchronously to the indicated first and second electromagnet and the corresponding response means, and B) the test mode of the individual brake element, in which one of the specified first and second response signals is supplied to the corresponding one of the first and second electromagnetic response means, and the response signal for the continuous release of the respective of the said first and second brake elements served on the other of the first and second electromagnetic actuation means.

The invention mainly proposes to control two brake elements (usually in the form of brake pads) using two separate electric drives (for example, electromagnets or solenoids). In normal mode, the operation of these two electric drives is regulated in parallel. When switching to the test mode of each brake element individually, the control lines are divided with the ability to control only one brake element in the same manner as in normal operation, and control the other brake element so that it is depressed during the corresponding test.

This does not require any manipulation of the brake equipment, but simply involves making an electrical connection or a group of related electrical connections. Therefore, these compounds are simple and cheap to make and carry out further work with them. Almost no cable is required even during remote operations and therefore maintenance requirements are minimal.

The presented embodiments make it possible to switch to the test modes of each brake element individually. Therefore, it is desirable to install the control device remotely from the elevator brake, for example, in a control panel located at any convenient place inside or outside the elevator shaft (for example, in the maintenance room outside the elevator shaft), so that switching can be performed remotely. Thus, this approach gives great freedom in choosing the location from which each brake element can be individually tested and started, which greatly facilitates the group of tasks from a common location.

In one embodiment, the specified test mode of each brake element individually includes the following modes: B1) a test mode of the first brake element, in which a response signal is issued to the second electromagnetic drive for continuous release of the second brake element, and B2) a test mode of the second brake element, in which the response to the first release of the first brake element is applied to the first electromagnetic drive.

The response signal for the continuous release of the first and / or second brake element may be supplied to the third output contact of the control device. The third output contact may be connected to a specific input contact of the first and / or second drive. Switching means can be introduced by which a third contact is connected to the first or second drive instead of or in addition to the first and second contacts, respectively. In addition, the third output contact can be switched on to cancel any “normal” signal supplied to the first and / or second drive through the first and / or second output contacts, respectively.

In elevators equipped with an electric brake release unit for emergency release, when the operator activates this unit (for example, when the elevator car is stuck between two landing sites due to the fact that one of the elevator brakes remains in the clamped position, a holiday signal for emergency release, leading to the release of the first and / or second brake element, is applied to the first and second actuators of the elevator brake to enable the car to be moved to the next safe position. for emergency release, as a rule, it is a signal to release the brake of the elevator, enabling at least slow movement of the cab.

The control circuit may include a brake control unit configured to control, upon request, the release of the first and second brake elements in normal operation, the output of which is a response signal from the control circuit, the output of the brake control unit being connected in parallel with the first and second contacts to issue the first and second triggering signals. This provides an easy way to achieve synchronization of the first and second triggering signals. The response signal supplied to the output of the control unit may be an on / off signal having only two levels corresponding to full brake operation (for example, at a zero signal level) or to the first and / or second brake elements fully released. In this case, speed control can be implemented by regulating the released / engaged brake elements in accordance with the set speed values (two-level regulation). Alternatively, you can consider the possibility that the brake elements are depressed only for a given time, which is set so that the elevator car never picks up speed above a given speed. If desired, the response signal may be a signal having two levels lying, for example, between a level corresponding to the fully engaged braking elements (for example, a signal level equal to zero) and corresponding fully released brake elements.

The control circuit may also include a brake power supply unit that provides a power signal with a power corresponding to the power that must be supplied to the first and / or second electromagnetic drive in order to release the first and / or second brake element. In one embodiment, the power signal provided by the brake power side may correspond to the power needed to drive an electromagnetic drive, such as an elevator brake core, such as a spring biased electromagnetic brake, to fully release the brake.

In one embodiment, the control device may also include means for issuing a power signal to the output of the brake control unit in case the control circuit determines that the first and / or second brake elements should be released. Such a tool can be implemented on the brake control relay connected on the input side with the power output of the brake power supply and on the output side with the output of the control unit. On the control unit side, such a relay can receive a switching signal from the brake control unit. Such a relay, which is an electromagnetic device, serves as a reliable tool that can withstand severe external conditions, and, therefore, provides an effective solution to problems. Alternatively, purely electrical switching means, such as corresponding semiconductor circuits, may be considered.

In addition, the control device may comprise means for continuously supplying a power signal to the third output contact. Thus, switching to the test mode of each brake element individually can be performed by establishing an electrical connection of the corresponding first or second actuation means with a third output contact.

Through the output of the brake control unit, the control circuit can regulate the operation of the elevator brake in accordance with the “normal” mode. To control the elevator brake in other operating modes, the control circuit can be equipped with a power output, to which a signal is constantly given to release the elevator brake. Such an additional output can be used exclusively for the constant supply of a response signal to any one of the first and second input contacts in the test mode of each brake element separately. With the introduction of the release block of the electric drive brake for emergency release, the power signal from the auxiliary output, present constantly, can be used by the release unit of the electric brake for emergency release. It is possible that in the test mode of each brake element individually, the same power signal issued from the auxiliary output can be used, which is used by the brake releasing unit for emergency release. Therefore, no additional power signal is required for the electrical test mode of each brake element individually.

Communication means that enable switching individually from the normal mode of operation to the test mode of each brake element can be implemented in various ways, for example, by introducing the corresponding electrical or electromechanical switching unit into the control device, or even programmatically if the control device includes a microprocessor or similar unit .

In one embodiment of the present invention, such a switching means is implemented by installing connectors for connecting the control device to the electromagnetic drive of the elevator brake. In this solution, using connectors for each of the operating modes, a certain connection scheme of the first connectors on the controller side with the second connectors on the brake side is provided, and for switching from one operating mode to another, these connections of the first connectors with the second connectors are made according to a different scheme. This can be done manually by disconnecting these connectors and connecting them according to another predetermined circuit. Although, on the one hand, such a procedure seems complicated and time-consuming, it has the advantage that any unwanted or erroneous switching from the normal mode to one or the other operating mode is effectively prevented. In particular, switching to the test mode of each brake element separately should be carried out only by trained service personnel and with great attention, since in this mode the elevator system is braked by only one brake element.

In another embodiment, the control device may include a detachable unit configured to connect the control device to the electromagnetic actuators of the elevator brake, the detachable unit on the controller side comprising a group of first connectors, each of which is equipped with a group of output contacts including a first and / or second output contact moreover, each of the first connectors is equipped with output contacts arranged in the same way (with the same pinout), and at least one of the first emov comprises a third output pin, and a group of terminals on both the brake comprising at least one second connector is provided with input terminals arranged on wiring corresponding to the first wiring connectors.

In order to interface with the first connectors, at least one second connector must include an input contact corresponding to the first output contact, and / or an input contact corresponding to the second output contact, and at least one input contact corresponding to the third output contact, these input contacts are arranged according to the scheme of the first connectors.

In one embodiment, the first and / or second output contacts on the side of the control device are connected to the output of the brake control unit of the control circuit, and at least one third contact on the side of the control device is connected to an additional output of the control circuit.

In one embodiment, the input contacts on the brake side corresponding to the first and second output contacts are connected to the first and second drive, respectively. An input contact corresponding to at least one third output contact is connected on the brake side to the first and / or second drive in such a way as to replace or suppress any first and / or second response signal supplied from the corresponding first and / or second output contact to side of the control device.

In normal operation, at least one second connector will be connected to the first connector provided with a corresponding one output contact from the first and second output contacts, but not having a third output contact, or provided with a third output contact connected to an additional output of the control circuit via a switching means made with the ability to disconnect the third output contact from the auxiliary output in normal operation.

To switch to the test mode of each brake element individually, the second connector, equipped with an input contact, configured to connect with electromagnetic actuation means associated with the brake element, which is released during the test, is switched to another one of the first connectors equipped with a third output contact on appropriate place. For example, this can be done by disconnecting the second connector from the first connector with which it is connected in normal operation, and connecting it to a second connector, another of the first connectors, provided with a third output contact connected to an additional output.

The advantage of this procedure is that it is not easy to switch from the normal operating mode to the test mode of each brake element separately and therefore erroneous or unauthorized switching to this mode can be avoided. This is especially important, since after switching to test mode each brake element individually, the elevator system is braked by only one brake element. In addition, at least for an authorized person, the positions of the first and second connectors can be easily distinguished, for example, with a simple look at the control panel, and therefore it is possible to directly control whether the elevator system is in normal operation or in some other mode.

The control device, as indicated above, may comprise, on the side of the control device, a corresponding first connector for each of the normal operation mode, the test mode of the first brake element and the test mode of the second brake element, and may comprise one second connector on the brake side for general connection to the first and the second drives and configured to connect to the corresponding one of the first connectors in accordance with the mode of operation.

In one embodiment, the first connectors and, therefore, also the second connector, each may contain five contacts connected as follows. The second connector may comprise one input contact configured to connect to the first output contact and therefore connected to the first drive, this input contact being inserted to receive a trip signal for the first drive, and one input contact configured to connect to the second output contact and therefore, connected to the second drive, this input contact being introduced to receive a signal for the second drive. There may be one additional contact connected to ground, and two other contacts connected to ground, common to all trip signals.

One of the first connectors used for normal operation may contain one first output contact for transmitting the operation signal to the first means of operation (and therefore connected to the output of the brake control unit), one second output contact for transmitting the operation signal to the second means of operation ( and therefore also connected to the output of the brake control unit), one contact connected to ground, and two additional contacts connected to ground.

An additional first connector may be introduced, configured to be coupled to the drive if it is necessary to perform a test mode of the first brake element. The output contacts of this first connector are identical to the first connector described above and used for normal operation, except that the second output contact is replaced by a third output contact, which is directly, that is, without any switching means connected between them, connected to an additional output a control circuit for continuously supplying a response signal to the second drive. If the second connector is connected to this first connector, the second drive will constantly receive a signal to release the second brake element and, therefore, the elevator brake will operate using only the first brake element. In this way, the operation of the first brake element (test mode of the first brake element) can be tested.

Similarly, in order to perform the test mode of the second brake element, another first connector is introduced. The output contacts of this connector are identical to the first connector described above for normal operation, except that the first output contact is replaced by a third output contact, which is directly, that is, without any switching means connected between them, connected to an additional output of the control circuit for continuous supply of a response signal to the first drive.

Alternatively, the control device may comprise, on the side of the control device, respective first connectors configured to connect in normal operation to each of the first and second drive, and an additional first connector configured to test each brake element individually, and may also comprise side of the brake corresponding second connectors for connecting each of the first and second drives to the control device, each of the second connectors having nen with the ability to connect in accordance with a given operating mode or to the corresponding one of the first connectors for normal operation, or to an additional first connector.

An additional first connector, designed to test each brake element individually, can be configured to connect the first brake element to the second actuation means in the test mode, or to connect the second brake element to the first actuation means in the test mode. In this embodiment, in accordance with a predetermined mode of operation, the second connectors will be connected to the first connectors as follows. For normal operation, the second connectors will be connected to the corresponding first connectors intended for normal operation. To switch to the test mode of the first brake element, the second connector for the second drive is disconnected from the corresponding first connector for normal operation, and connected to an additional first connector for testing each brake element separately. As a result, it turns out that the response signal will be constantly supplied to the second actuation means and, therefore, the second brake element will be constantly released. Similarly, to switch to the second brake element test mode, the second connector for the first drive is disconnected from the corresponding first connector for normal operation, and connected to the additional first connector for testing each brake element individually.

The connectors described above can be connecting mechanisms that can be connected / disconnected repeatedly without the need for significant effort. In one embodiment, the socket parts of the plug-type connectors can be used on one side (for example, on the side of the control device), and the corresponding pin parts of the plug-type connectors can be used on the other side (in this example, on the brake side).

It is not necessary to require that all the connectors described above are different devices that are physically movable to each other. To achieve the objectives of these embodiments, it is rather sufficient that the connectors on one side (for example, the connectors on the brake side) are separate devices that are movable to each other, while the connectors on the other side are fixed relative to each other or even physically represent the whole device (for example, a single large outlet on the circuit board).

In another embodiment, the control device may also include monitoring means for monitoring the release and engagement of the first and second brake elements, respectively, the control device may be configured to leave the monitoring device turned on when a request to enter one of the test modes of each brake is received element separately, and while the control device may, when entering into one of the test modes of each brake element by -similarity allow performing only a predetermined number of runs of the elevator, stops the elevator brake. This will help to avoid that the elevator will operate continuously in one of the test modes of each brake element separately (in which only one of the elevator brakes is in operation and the other is in the released state), for example, due to the fact that maintenance personnel I forgot to restore normal operation after testing each brake element individually, while the control device itself can make sure that the elevator operates in any test mode for each brake element separately only a limited time.

In another embodiment, an elevator brake is provided comprising a first brake element that is biased by a first spring means into engagement with a brake surface, the first brake element comprising a first core mounted to drive an electromagnetic drive so as to bring the first brake element out of engagement with the brake surface, overcoming the biasing force of the first spring means, and the second brake element, displaced by the second spring means in engagement with the torus the surface of the brain, the second brake element comprising a second core mounted so as to actuate the electromagnetic drive in such a way as to disengage the second brake element from the brake surface, overcoming the biasing force of the second spring means, while the elevator brake contains the first electromagnetic drive configured to drive a first core and a second electromagnetic drive configured to drive a second core.

In private embodiments of the invention, each of the first and second electromagnetic actuators includes a corresponding electromagnetic coil.

The first brake element may comprise a first housing, and the second brake element may comprise a second housing.

Each of the first and second cores, as well as each of the first and second cases, can have a shape characterized by the presence of an axis, and the first and second cores, like each of the first and second cases, can be placed coaxially to each other. Therefore, the placement of the first and second cores, as well as each of the first and second bodies, is such that the first and second core, as well as each of the first and second bodies, form coincident axes. In particular, both cores and both cases can have substantially the same length in the direction of the common axis.

In one embodiment, one of the cores, called the inner core, may be located closer to the common axis than the other core, called the outer core, so that the inner core is surrounded by the outer core. Similarly, one of the casings, called the inner housing, may be located closer to the common axis than the other housing, called the outer housing, so that the inner housing is covered by the outer housing.

In particular embodiments, the common axis of the first and second cores may be an axis of rotational symmetry with respect to the first and / or second cores. Similarly, the common axis of the first and second bodies can be an axis of rotational symmetry with respect to the first and / or second bodies.

In another embodiment, when viewed in the direction of their common axis, each of the first and second cores may have a circular outer periphery (outer rim) and / or a circular inner region. Similarly, each of the first and second bodies may also have a circular outer periphery (outer rim) and / or a circular inner region.

The first and second cores and / or the first and second bodies may each have an annular shape.

The cross section of the ring bodies forming the first and second cores and / or the first and second bodies, respectively, in the direction perpendicular to their common axis, can be circular (and, therefore, ring bodies have a toroidal shape) or generally rectangular (and therefore , ring bodies have a shape similar to a flat torus or a short hollow cylinder, respectively).

The annular first and second bodies can be mounted coaxially so that each of the first and second bodies during assembly together fill part of the circular disk. One of the housings may form an outer ring or an outer part of a disc spanning another enclosure forming an inner part of a disc. In particular, the outer part of the disk in the form of a ring may have an inner periphery (rim) identical to the outer periphery (rim) of the inner part of the disk, so that in the assembled state, the first and second bodies form contacting parts of the disk. Specifically, the inner part of the disk can be cut in its central part so as to form an inner ring. That is, in the assembled state, the first and second bodies are ring-shaped, the inner periphery is formed by the inner periphery of the inner ring, and the outer periphery of which is formed by the outer periphery of the outer ring.

The first and second bodies can also be made as a single body, either by forming both the first and second bodies from one workpiece, or by permanently connecting the first and second bodies to each other. This design facilitates the installation of brake elements, since it is enough to attach only the first housing to a stationary structure.

In addition, each of the first and second bodies may be provided with a groove made therein, and the first or second electromagnetic drive may be placed in this groove.

In one embodiment, each of the slots designed to house the first or second electromagnetic actuator may span the common axis of the housings. In particular, the grooves may have an annular shape and may also be aligned coaxially with respect to the first and second bodies, respectively. The cross section of the grooves in the direction perpendicular to the common axis can be circular (toroidal grooves) or can be mainly rectangular (grooves in the form of a flat torus).

The first spring means may comprise a group of first springs installed along the periphery of the circle spanning the axis at equal angular distances from each other, and the second spring means may comprise a group of second springs installed along the periphery of the circle spanning the axis at equal angular distances from each other moreover, the first springs are introduced into the corresponding grooves made in the first housing, and the second springs are introduced into the corresponding grooves made in the second housing.

In one embodiment, the angular distance between two subsequent second springs may be equal to the angular distance between two subsequent second springs. In addition, the second springs of the second spring means may be staggered relative to the first springs of the first spring means, so that the corresponding second springs are located in angular positions that are half the distance between two consecutive first springs.

In another embodiment, an elevator brake system is provided comprising an elevator control device described above and also comprising an elevator brake described above.

Although the invention has been described in conjunction with exemplary embodiments, those skilled in the art will appreciate that various changes may be made and various equivalents of the elements of the invention may be used. In addition, many modifications can be made to the idea of the invention to adapt to various conditions or materials. Therefore, it is assumed that the invention is not limited to the specific described embodiments, but will include all the embodiments described by the appended claims.

Claims (16)

1. The brake control device (100, 200) of the elevator brake (10), including a control circuit (110, 210), configured to supply a first signal to a vacation request of the first brake element (14) of the brake (10), a second signal to request a vacation of the second brake element (16) of the brake (10) and a constant signal to request the release of the first and second brake elements, the first contact (112, 212) to output the first signal to the first electromagnetic drive (26) of the brake (10) and the second contact (114, 214 ) to output the second signal to the second electromagnetic drive (30) brake a (10), and configured to operate at least in a normal mode, in which said first and second signals are fed synchronously to said first and second electromagnetic drives (26, 30), respectively, and in the test mode of each brake element individually, in which one of the signals, the first or second, is supplied to the corresponding electromagnetic drive (26, 30), and the constant release signal of the corresponding brake element (14, 16) is supplied to the other of these drives (26, 30). 2. The device (100, 200) according to claim 1, which contains a third contact (132, 134, 232), to which a signal of continuous release of the first and / or second brake element (14, 16) is supplied. 3. The device (100, 200) according to claim 1, wherein said control circuit (110, 210) comprises a brake control unit (116, 216) for releasing said first and second brake elements (14, 16) during normal operation and made with the possibility of applying a signal to the output (118, 218) of the brake control unit (116, 216), connected in parallel with the first and second contacts (112, 114, 212, 214) with the possibility of supplying the indicated first and second signals. 4. The device (100, 200) according to claim 1, wherein said control circuit (110, 210) further comprises a brake power unit (120, 220) installed with the possibility of supplying a power signal with a power corresponding to the supplied power to said first and / or a second electromagnetic drive (26, 30) for dispensing said first and / or second brake element (14, 16). 5. The device (100, 200) according to claim 4, which comprises means for supplying a power signal to the specified output (118, 218) of the brake control unit when determining by the specified control circuit whether the first and / or second brake element needs to be released (14, 16) and means for continuously supplying a power signal to said third contact (132, 134, 232). 6. The device (100, 200) according to claim 1, which includes a detachable unit (124, 126, 128, 130, 224, 226, 228, 230a, 230b) mounted with the possibility of connecting to the brake electromagnetic actuators (26, 30) (10) and containing on the control circuit a group of first connectors (124, 126, 128, 224, 226, 228) provided with a group of contacts including a first contact (112, 212) and / or a second contact (114, 214), and on side of the brake at least one second connector (130, 230a, 230b), each of these first connectors (124, 126, 128, 224, 226, 228) is made with one pinout corresponding to the pinout of the second about the connector, and at least one of the first connectors (124, 126, 128, 224, 226, 228) contains the specified third contact (132, 134, 232). 7. The device (100) according to claim 6, in which each mode selected from the group including normal operation, the test mode of the first brake element and the test mode of the second brake element, corresponds to one of the group of first connectors (124, 126, 128) while one second connector (130) is installed with the ability to connect to the first and second drives (26, 30) and to one of the first connectors (124, 126, 128) corresponding to the operating mode. 8. The device (200) according to claim 6, in which the first connectors (224, 226) are made with the possibility of connection in normal operation with each of the drives (26, 30), the first and second, an additional first connector (228) is made with the ability to test a single brake element, and the corresponding second connectors (230a, 230b) are made with the possibility of connection with the first and second drive (26, 30) and connect in accordance with the operating mode or to the corresponding one of the first connectors (224, 226) with normal operation, or add to the specified the first first connector (228). 9. The device (100, 200) according to claim 1, which comprises means for controlling the release and engagement of the first and second brake elements (14, 16) and is configured to disable the monitoring means when a request for switching to the test mode of the brake element is received and permitting a certain number of runs of the elevator car stopped by the specified brake (10). 10. The brake (10) of the elevator, including the first electromagnetic drive (26), the first brake element (14), mounted to move by means of the first spring means (28a, 28b, 28c, 28d) in the engaged position with the brake surface and containing the first core (20) associated with an electromagnetic drive (26) with the possibility of withdrawing the first brake element (14) from engagement with said brake surface to overcome the biasing force of the first spring means (28a, 28b, 28c, 28d), the second electromagnetic drive (30) and second brake an element (16), mounted to move by means of the second spring means (32a, 32b, 32c, 32d) to the engaged position with the brake surface and containing a second core (24) connected to the electromagnetic drive (30) with the possibility of outputting the second brake element (16) from engaging with said brake surface to overcome the biasing force of the second spring means (32a, 32b, 32c, 32d). 11. The brake (10) according to claim 10, in which the first and second cores (20, 24) are mounted coaxially and have a shape defined by an axis (12). 12. The brake (10) according to claim 10, in which the first and second cores (20, 24) have an annular shape. 13. The brake (10) according to claim 10, in which the first brake element (14) comprises a first housing (18) provided with a first groove in which the first electromagnetic drive (26) is located, and the second brake element (16) comprises a second housing (22) provided with a second groove in which the second electromagnetic drive (30) is located. 14. The brake (10) according to item 13, wherein said first housing (18) and said second housing (22) are made as a whole. 15. The brake (10) of the elevator according to claim 10, wherein said first spring means comprises a group of first springs (28a, 28b, 28c, 28d) located along the circumference, around the specified axis (12), at equal angular distances from each other in the recesses made in the first housing (18), and said second spring means comprises a group of second springs (32a, 32b, 32c, 32d) located along the circumference, around the specified axis (12), at equal angular distances from friend in the recesses made in the second building (22). 16. The brake system of the elevator, including the device (100, 200) for controlling the elevator, made according to any one of claims 1 to 10, and the brake (10) of the elevator, made according to any one of claims 11 to 14.

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