Elevator safety device, elevator control cabinet and elevator

Abstract

The utility model discloses an elevator safety device, an elevator control cabinet and an elevator. The device comprises an emergency rescue module, wherein the emergency rescue module comprises a first terminal, a second terminal, a third terminal and a fourth terminal; the first terminal is used for forming an electric loop with the first switch, the second terminal is used for outputting an emergency signal to the elevator control module under the condition that the first switch is closed and the elevator and the mains supply are interrupted, and the emergency signal is used for enabling the elevator control module to execute a preset emergency program; the third terminal is used for forming an electric loop with the second switch, the fourth terminal is used for sending an emergency brake control signal to the elevator control module, and the second switch is used for controlling on-off of signal sending of the fourth terminal under the condition that the first switch is switched off. The safety of elevator operation can be improved.

Description

Technical Field

[0001] This application relates to the field of elevator safety control technology, specifically to an elevator safety device, an elevator control cabinet, and an elevator. Background Technology

[0002] Existing elevator systems face multiple safety challenges during sudden power outages. Power interruption risks exist during the switching of conventional backup power, potentially leading to abnormal car displacement. Mechanical braking systems rely excessively on single braking units, which are prone to performance degradation over time, especially during high-speed operation where emergency braking can generate excessive impact, threatening passenger safety. Furthermore, issues such as interrupted emergency communication, delayed rescue response, and docking position deviations after a power outage further exacerbate the risk of entrapment. Current solutions often employ a simple aggregation of independent functional modules, lacking coordinated optimization for power compensation, intelligent braking, and real-time rescue in power outage scenarios, making it difficult to effectively address the systemic safety requirements under complex power outage conditions. Utility Model Content

[0003] The purpose of this application is to provide an elevator safety device, an elevator control cabinet, and an elevator to solve the problem of low elevator operation safety in the prior art.

[0004] To achieve the above objectives, the first aspect of this application provides an elevator safety device, including an emergency rescue module. The emergency rescue module includes a first terminal, a second terminal, a third terminal, and a fourth terminal. The first terminal is used to form an electrical circuit with a first switch. The second terminal is used to output an emergency signal to an elevator control module when the first switch is closed and the elevator is disconnected from the mains power. The emergency signal is used to cause the elevator control module to execute a preset emergency program. The third terminal is used to form an electrical circuit with the second switch. The fourth terminal is used to send an emergency brake signal to the elevator control module. The second switch is used to control the on / off state of the signal transmission from the fourth terminal when the first switch is open.

[0005] In this embodiment, the emergency rescue module further includes a power switching switch that can form an electrical circuit with the battery. The power switching switch is used to switch the battery to provide power to the elevator control module when the first switch is closed and the elevator is disconnected from the mains power.

[0006] In this embodiment, the elevator control module includes a control driver, which is electrically connected to the emergency rescue module and the traction machine respectively; the brake of the traction machine is used to control the braking process of the traction machine according to the emergency brake signal received by the control driver.

[0007] In this embodiment, the control driver is also electrically connected to a braking resistor, which is used to consume the electrical energy generated by the traction machine during braking.

[0008] In this embodiment, the control driver is also electrically connected to the traction machine encoder, which measures the rotational speed of the traction machine in a pulse manner.

[0009] In this embodiment, the elevator control module further includes a synchronous inverter frequency divider card, which is electrically connected to the traction machine encoder via a shielded cable and is used to receive the pulse signal from the traction machine encoder to the traction machine.

[0010] In this embodiment, the elevator control module further includes a first contactor, which is electrically connected to the traction machine and is used to disconnect the electrical connection between the control driver and the traction machine when the control driver receives an emergency brake signal.

[0011] In this embodiment, the elevator control module further includes a second contactor, the contacts of which are connected in parallel to the contacts of the first contactor, for star control of the traction machine.

[0012] A second aspect of this application provides an elevator control cabinet, including the aforementioned elevator safety device.

[0013] A third aspect of this application provides an elevator, including the elevator control cabinet described above.

[0014] Through the above technical solution, elevator safety devices are deployed in the elevator control cabinet, which can control the safe operation of the elevator. The elevator safety device includes an emergency rescue module. The emergency rescue module includes a first terminal, a second terminal, a third terminal, and a fourth terminal. The first terminal is used to form an electrical circuit with a first switch. The second terminal is used to output an emergency signal to the elevator control module when the first switch is closed and the elevator is disconnected from the mains power. The emergency signal is used to cause the elevator control module to execute a preset emergency program. The third terminal is used to form an electrical circuit with a second switch. The fourth terminal is used to send an emergency brake signal to the elevator control module. The second switch is used to control the on / off state of the signal sent by the fourth terminal when the first switch is open, thereby improving the safety of elevator operation.

[0015] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings:

[0017] Figure 1 The schematic diagram illustrates a structural diagram of an elevator safety device according to an embodiment of this application;

[0018] Figure 2 This schematic diagram illustrates a structural diagram of an elevator safety device according to another embodiment of this application;

[0019] Figure 3 This schematic diagram illustrates a structural diagram of a power supply circuit according to an embodiment of this application;

[0020] Figure 4 A schematic diagram of a control loop according to an embodiment of this application is shown.

[0021] Figure 5 The schematic diagram illustrates a structural diagram of an emergency electric operation circuit according to an embodiment of this application;

[0022] Figure 6 This schematic diagram illustrates a structural diagram of a safety lock door system according to an embodiment of this application;

[0023] Figure 7 This schematic diagram illustrates the structure of a braking circuit and a speed limiter test circuit according to an embodiment of this application.

[0024] Figure 8 The schematic diagram illustrates a structural diagram of an intercom circuit according to an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures

[0026] 100 Emergency Rescue Module 110 First Terminal

[0027] 120 Second terminal 130 Third terminal

[0028] 140 Fourth terminal 150 First switch

[0029] 160 Second switch 200 Elevator control module

[0030] 210 Control drive 220 Traction machine

[0031] 230 Braking resistor 240 Traction machine encoder

[0032] 250 First contactor 260 Second contactor

[0033] 270 Synchronous Frequency Inverter Frequency Divider Card Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0035] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0037] Figure 1 A schematic diagram illustrating the structure of an elevator safety device according to an embodiment of this application is shown. Figure 1 As shown in the figure, this application embodiment provides an elevator safety device, which may include...

[0038] Emergency rescue module 100 includes a first terminal 110, a second terminal 120, a third terminal 130, and a fourth terminal 140. The first terminal 110 forms an electrical circuit with the first switch 150. The second terminal 120 outputs an emergency signal to the elevator control module 200 when the first switch 150 is closed and the elevator is disconnected from the mains power. The emergency signal is used to cause the elevator control module 200 to execute a preset emergency program. The third terminal 130 forms an electrical circuit with the second switch 160. The fourth terminal 140 sends an emergency brake signal to the elevator control module 200. The second switch 160 controls the on / off state of the signal transmission from the fourth terminal 140 when the first switch 150 is open.

[0039] In this embodiment, the emergency rescue module 100 is connected to a three-phase 380V mains power supply via terminals L1, L2, and L3, providing the necessary power for the elevator, emergency rescue module 100, and elevator control module 200. The emergency rescue module 100 is grounded via a PE terminal. The first terminal 110 forms an electrical circuit with the first switch 150 via pins 1 and 2. The second terminal 120 outputs an emergency signal to the elevator control module 200 via pins 4 and 5 when the first switch 150 is closed and the elevator is without mains power. This emergency signal causes the elevator control module 200 to execute a preset emergency program. The preset emergency program can be activated by the emergency rescue module 100 outputting an emergency signal to the elevator control module 200 to initiate the elevator's emergency operation mode when mains power is interrupted. Specifically, the elevator control module 200 can be powered by a battery to drive the traction machine 220 to slowly stop the elevator at the nearest floor, while simultaneously activating the brake of the traction machine 220 to ensure a smooth stop and passenger safety. In an emergency, the brake of the traction machine 220 can be directly controlled via an emergency stop signal to achieve rapid and safe stopping of the elevator. The third terminal 130 forms an electrical circuit with the second switch 160 via pins 1 and 2. The fourth terminal 140 is used to send an emergency stop signal to the elevator control module 200 via pins 1 and 2. The second switch 160 is used to control the on / off state of the signal transmission from the fourth terminal 140 when the first switch 150 is open.

[0040] Through the above technical solution, when the mains power fails, after the first switch 150 closes, the emergency rescue module 100 switches to battery power to ensure that the elevator control module 200 continues to operate. Simultaneously, the emergency rescue module 100 outputs an emergency signal to the elevator control module 200, activating a preset emergency program that enables the elevator to perform operations such as safe shutdown or slow stopping. Furthermore, when the first switch 150 opens, the emergency rescue module 100 controls the second switch 160 to send an emergency brake signal to the elevator control module 200, ensuring that the elevator can quickly brake and stop in an emergency. Through this series of power switching, signal output, and circuit control, the safe shutdown of the elevator in the event of a mains power outage or emergency is ultimately achieved, ensuring passenger safety and improving the safety of elevator operation.

[0041] In this embodiment, the emergency rescue module 100 may further include a power switching switch that can form an electrical circuit with the battery. The power switching switch is used to switch the battery to provide power to the elevator control module 200 when the first switch 150 is closed and the elevator is disconnected from the mains power.

[0042] In this embodiment, the emergency rescue module 100 is electrically connected to the battery via the BAT+ terminal and the BAT- terminal.

[0043] In this embodiment, the elevator control module 200 may include a control driver 210, which is electrically connected to the emergency rescue module 100 and the traction machine 220 respectively; the brake of the traction machine 220 is used to control the braking process of the traction machine 220 according to the emergency brake signal received by the control driver 210.

[0044] In this embodiment, the control driver 210 is electrically connected to the emergency rescue module 100 via T-terminal, S-terminal, and R-terminal; the control driver 210 is electrically connected to the traction machine 220 via U-terminal, V-terminal, and W-terminal. The emergency brake control signal can be a brake release signal or a brake holding signal.

[0045] In this embodiment, the control driver 210 is also electrically connected to the braking resistor 230, which is used to consume the electrical energy generated by the traction machine 220 during braking.

[0046] In this embodiment, the control driver 210 is electrically connected to the braking resistor 230 via the PB+ terminal and the PB- terminal.

[0047] In this embodiment, the control driver 210 is also electrically connected to the traction machine encoder 240, which is used to measure the rotational speed of the traction machine 220 in a pulse manner.

[0048] In this embodiment of the application, the elevator control module 200 also includes a synchronous frequency converter frequency divider card 270, which is electrically connected to the traction machine encoder 240 through a shielded cable and is used to receive the pulse signal from the traction machine encoder 240 to the traction machine 220.

[0049] In this embodiment, the elevator control module 200 further includes a first contactor 250, which is electrically connected to the traction machine 220 and is used to disconnect the electrical connection between the control driver 210 and the traction machine 220 when the control driver 210 receives an emergency brake signal.

[0050] In this embodiment of the application, the elevator control module 200 further includes a second contactor 260, the contacts of which are connected in parallel to the contacts of the first contactor 250, for star control of the traction machine 220.

[0051] In this embodiment, the contacts of the second contactor 260 are connected in parallel with the contacts of the first contactor 250, achieving a star-sealing control of the traction machine 220. When the elevator control module 200 does not receive an emergency braking signal, the first contactor 250 remains conductive, allowing electrical connection between the control driver 210 and the traction machine 220, ensuring normal operation of the traction machine 220. When the control driver 210 receives an emergency braking signal, the first contactor 250 disconnects the electrical connection, stopping the traction machine 220. Simultaneously, the second contactor 260 uses star-sealing control to prevent the traction machine from continuing to operate at this time, ensuring emergency shutdown of the elevator and passenger safety. The function of star-sealing control is to ensure that when the emergency rescue module 100 issues an economic braking signal, the traction machine 220 will not be accidentally driven again, ensuring braking effect and improving the safety of elevator operation.

[0052] Figure 2 This schematic diagram illustrates a structural diagram of an elevator safety device according to another embodiment of this application; as shown below. Figure 2As shown in the figure, this application embodiment also provides a structural diagram of an elevator safety device. When the mains power supply is AC220V, the L1 terminal is the live wire, the N terminal is the neutral wire, and the PE terminal is the ground wire. The mains power is connected to the elevator control cabinet through the wiring terminal, and the wiring terminal is connected to the main power switch QF of the elevator control cabinet. Through the main power switch QF, the mains power is connected to the input terminal of the emergency rescue module 100. The output terminal (T terminal and R terminal) of the emergency rescue module 100 is connected to the elevator control module 200. The output terminal (U terminal, V terminal and W terminal) of the control driver 210 is connected to the traction machine 220 through the output first contactor 250. The main contacts of the first contactor 250 are connected in parallel to the second contactor 260. Preferably, the second contactor 260 can be a normally closed star-type contactor to realize the star-type control of the permanent magnet synchronous non-magnetic wheel traction machine 220. The braking resistor 230 is connected to the control driver 210 via a wire, consuming the remaining power on the DC bus of the control driver 210 when the drive host is in the generator state; the traction machine encoder 240 is connected to the control driver 210 via a shielded cable, measuring the rotation speed of the traction machine 220 via pulse mode; the emergency rescue module 100 is connected to two segments of the battery (BAT+ and BAT-) via a cable, and is connected to the first switch 150 via a wire to control the operation status of the emergency rescue module 100 to be in the emergency normal state or the electric brake release state. When the first switch 150 is closed, the emergency rescue module 100 is in normal emergency state. At this time, if there is mains power, the emergency rescue module 100 is powered by the mains power; if there is no mains power, the emergency rescue module 100 is powered by the battery. When the first switch 150 is de-energized, the emergency rescue module 100 is in electric brake release state. At this time, the opening and closing of the elevator traction machine 220 can be controlled by switching the external second switch 160 on and off (two pins of the fourth terminal 140), realizing electric brake release. Pins 4 and 5 of the second terminal 120 are used to output emergency signals. When the elevator loses power, the emergency rescue module 100 outputs an emergency signal to the elevator control module 200 through pins 4 and 5 of the second terminal 120. Upon receiving this signal, a preset emergency operation program will be executed. The preset emergency operation program can include sending alarm information to the outside world, connecting to the emergency rescue telephone, and playing an emergency escape instruction video, etc.

[0053] Figure 3 This schematically illustrates a structural diagram of a power supply circuit according to an embodiment of this application; as shown below. Figure 3As shown in the diagram, this application also provides a power supply circuit structure. An AC220V power supply R is connected to the input terminal of the control transformer TCO via a wire. After isolation transformation, it outputs AC110V power. The 0V of the output AC110V power supply is directly connected to the elevator safety circuit, and the 110V is connected to the safety circuit through fuse FU1, achieving transformer and power supply isolation protection. The AC220V power supply R is connected to the elevator brake circuit via a wire and fuse FU2, achieving overcurrent and short-circuit protection. The AC220V power supply R is connected to the live wire terminal of the switching power supply and the live wire terminal of the door operator circuit via a wire and fuse FU3, achieving overcurrent and short-circuit protection. The AC220V power supply N is connected to the neutral wire terminal of the control transformer TCO input, the neutral wire terminal of the brake circuit, the neutral wire terminal of the switching power supply, the neutral wire terminal of the door operator power supply, and the neutral wire terminal of the lighting power supply via a wire. The AC220V live wire L1 is connected to the main lighting circuit through switch SW1, achieving open-circuit, short-circuit, and overcurrent protection.

[0054] Figure 4 A schematic diagram illustrating the structure of a control loop according to an embodiment of this application is shown; as follows: Figure 4 As shown in the diagram, this application also provides a structural diagram of a control circuit. A DC 24V power supply is connected via a wire to the C2 power port (CN3) of the control main board. Its 0V (COM) is connected via a wire to the 0V port of the fire relay KAF coil in the control cabinet and the power-port of the leveling photoelectric switch SQU. The 24V (+2V) is connected via wires to the base station SWFI fire switch, which is then connected to the power+ port of the fire relay KAF in the control cabinet and the power+ port of the leveling photoelectric switch SQU. The remaining +24V power supplies are connected via cables to the relevant function switches and then to the signal X input terminal of the control main board for signal acquisition. The output terminals M1~Y1, M2~Y2, and M2~Y3 of the control main board C2 control the KMY main contactor, KMB brake contactor, and KAY star-sealing contactor via wires, respectively, to control the relevant control contactors. The communication signal port CN3 is connected via cables to the outbound call communication and car communication, respectively, to achieve communication connection between the control main board, outbound call, and inbound call.

[0055] Figure 5 The schematic diagram illustrates a structural diagram of an emergency electric operation circuit according to an embodiment of this application; as shown below. Figure 5 As shown in the diagram, this application also provides a structural diagram of an emergency electric operation circuit. The control main board C2 is connected to the emergency electric switch SRP, the maintenance up switch SBPU, and the maintenance down switch SBPD in the control cabinet via wires. By switching the state of the SRP switch, the elevator can achieve normal operation and emergency electric operation.

[0056] Figure 6 This schematically illustrates a structural diagram of a safety locking door system according to an embodiment of this application; as shown... Figure 6As shown in the figure, this application embodiment also provides a structural diagram of a safety lock door circuit. The live wires of the series-connected safety circuit and door lock circuit (2620, 2616, 2618, 2619) are connected to the high-voltage detection terminal of the control main board C2 via wires, and the neutral wire 2205 is directly connected to the common high-voltage detection terminal of the control main board C2. When the safety circuit and door lock circuit are connected or disconnected, the main board can detect the high-voltage on / off state of different parts, thereby realizing high-voltage detection of the elevator safety circuit and door lock circuit.

[0057] Figure 7 This schematically illustrates a structural diagram of a braking circuit and a speed limiter test circuit according to an embodiment of this application; as shown... Figure 7 As shown in the diagram, this application also provides a structural diagram of a braking circuit and a speed governor test circuit. In the braking circuit, the AC220V live wire is connected via cable to the normally open contact of the KMY main contactor, then via wire to the normally open contact of the KMB brake contactor, and then via wire to the input live wire terminal of the rectifier module UR1. The AC220V neutral wire is connected via wire to the normally open contact of the KMB brake contactor, and then via wire to the input neutral wire terminal of the rectifier module UR1. The rectifier module rectifies the AC220V AC to DC99V DC, which is then connected to the traction mechanism brake via wire. The on / off state of KMY and KMB is controlled by the control motherboard C2, thereby controlling the operation and reset of the elevator traction mechanism brake. In the speed governor test circuit, the AC220V live wire is connected to the common terminal of the SAY (speed governor test switch, double normally open self-reset switch) via the normally open contact of the emergency electric switch SRP. The two sets of normally open SAY contacts are then connected to the live wire terminals of the speed governor's operating and reset electromagnets, respectively. The AC220V neutral wire is directly connected to the neutral wire terminal of the speed governor's operating and reset circuit. When the SRP emergency electric switch is in emergency operation mode, the normally open contact of the SRP is closed. At this time, the operation and reset test of the speed governor can be performed by rotating the SAY self-reset switch left or right.

[0058] Figure 8 This schematic diagram illustrates a structural diagram of an intercom circuit according to an embodiment of this application; as shown below. Figure 8 As shown in the diagram, this application also provides a structural diagram of an intercom circuit. Wireless communication for emergency rescue is achieved by collecting elevator car intercom signals (P+, N-, LA, Y) and connecting them to the control cabinet's wireless telephone PHO.

[0059] This application also provides an elevator control cabinet, including the elevator safety device described above.

[0060] This application also provides an elevator, including the elevator control cabinet described above.

[0061] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0062] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. An elevator safety arrangement, characterized in that The emergency rescue module comprises a first terminal, a second terminal, a third terminal and a fourth terminal; the first terminal is used to form an electric circuit with a first switch; the second terminal is used to output an emergency signal to an elevator control module when the first switch is closed and the elevator is interrupted with commercial power, the emergency signal being used to make the elevator control module execute a preset emergency program; the third terminal is used to form an electric circuit with a second switch; the fourth terminal is used to send an emergency brake control signal to the elevator control module; the second switch is used to control the on-off of the fourth terminal signal transmission when the first switch is opened.

2. The apparatus of claim 1, wherein, The emergency rescue module further comprises a power switch switchable with a storage battery to provide power to the elevator control module when the first switch is closed and the elevator is interrupted with commercial power.

3. The apparatus of claim 1 or 2, wherein, The elevator control module comprises a control driver electrically connected with the emergency rescue module and a traction machine respectively; a brake of the traction machine is used to control a braking process of the traction machine according to the emergency brake control signal received by the control driver.

4. The apparatus of claim 3, wherein, The control driver is further electrically connected with a braking resistor used to consume the power generated by the traction machine in the braking process.

5. The apparatus of claim 3, wherein, The control driver is further electrically connected with a traction machine encoder used to measure the rotating speed of the traction machine in a pulse mode.

6. The apparatus of claim 5, wherein, The elevator control module further comprises a synchronous frequency converter frequency division card electrically connected with the traction machine encoder through a shielded cable to receive the pulse signal of the traction machine from the traction machine encoder.

7. The apparatus of claim 3, wherein, The elevator control module further comprises a first contactor electrically connected with the traction machine to disconnect the electrical connection between the control driver and the traction machine when the control driver receives the emergency brake control signal.

8. The apparatus of claim 7, wherein, The elevator control module further comprises a second contactor, the contact of which is connected with the contact of the first contactor to control the star braking of the traction machine.

9. An elevator control cabinet, characterized in that The elevator safety device comprises the elevator safety device according to any one of claims 1 to 8.

10. An elevator, characterized by The elevator control cabinet comprises the elevator control cabinet according to claim 9.

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