Star sealing effectiveness monitoring device of elevator contactor

Abstract

The utility model discloses a star sealing effectiveness monitoring device of an elevator contactor, which comprises an integrated control box arranged in the elevator contactor or at the top of the elevator contactor; the pulse signal generator module, the elevator upper computer system power supply input module and the pulse signal output module are all arranged in the integrated control box; wherein a resistance acquisition part of the pulse signal generator module is connected in parallel with a three-phase star-sealing loop wire outlet end of an elevator contactor and is used for acquiring a star-sealing loop resistance value; and an electric connection port of the pulse signal generator module is respectively connected with the elevator upper computer system power supply input module and the pulse signal output module. Power is input through the elevator upper computer system, pulse signals are output through circuit conversion and fed back to the elevator control system, information transmission between the elevator contactor and the elevator control system is achieved, and the star sealing control function and the on-machine state of the elevator contactor are effectively monitored.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and in particular to a device for monitoring the effectiveness of the sealing of an elevator contactor. Background Technology

[0002] Most elevators on the market currently use permanent magnet synchronous gearless traction motors. A key feature of these motors is their ability to provide energy-efficient braking. When an elevator experiences a power outage or malfunction and begins to run, short-circuiting the three-phase input terminals creates three closed coils in the traction motor armature, achieving a star-shaped braking function. This prevents the elevator from running due to brake failure caused by a power outage or malfunction. The star-shaped braking function of the permanent magnet synchronous gearless traction motor can be implemented through the elevator contactor.

[0003] According to the requirements of TSG T7007-2022 "Elevator Type Test Rules", the contactor controlling the elevator's star brake needs to be tested online to ensure that the elevator cannot be put into normal operation when the braking function is cancelled. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a device for monitoring the effectiveness of the sealing of elevator contactors.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A device for monitoring the effectiveness of a sealing ring on an elevator contactor includes:

[0007] An integrated control box is located inside the elevator contactor or on top of the elevator contactor;

[0008] The pulse signal generator module, the elevator host computer system power input module, and the pulse signal output module are all housed in the integrated control box;

[0009] The resistance acquisition section of the pulse signal generator module is connected in parallel with the output terminal of the three-phase star-sealing circuit of the elevator contactor to acquire the resistance value of the star-sealing circuit; the electrical connection ports of the pulse signal generator module are respectively connected to the power input module and the pulse signal output module of the elevator host computer system; the power input module of the elevator host computer system is connected to the power supply voltage transmission section of the elevator control system; and the pulse signal output module is connected to the pulse signal receiving section of the elevator control system.

[0010] The pulse signal generator module includes:

[0011] The AC / DC conversion unit circuit is connected to the elevator control system through the elevator host computer system power input module;

[0012] The voltage regulator circuit is connected to the AC / DC conversion unit circuit.

[0013] The MCU control unit circuit is connected to the voltage regulator unit circuit.

[0014] The resistance acquisition unit circuit is connected to the MCU control unit circuit and is connected in parallel to the three-phase star-sealed circuit output terminal of the elevator contactor.

[0015] The pulse drive control unit circuit is connected to the resistance acquisition unit circuit, and is connected to the elevator control system through the pulse signal output module.

[0016] The pulse drive control unit circuit includes an optocoupler solid-state relay, which is connected to a resistor and an amplifier respectively. The optocoupler solid-state relay is connected to the elevator control system through a pulse signal output module.

[0017] The power input module and the pulse signal output module of the ladder host computer system are respectively a cage spring terminal block, a quick-connect terminal block, or a screw crimp terminal block. Each terminal block is built into the integrated control box and is electrically connected to the AC / DC conversion unit circuit and the pulse drive control unit circuit of the pulse signal generator module through lead-out pins.

[0018] The beneficial effects of this utility model are:

[0019] 1. This utility model integrates the monitoring device inside the elevator contactor or places it on the top of the elevator contactor. By monitoring the resistance value of the three-phase star-sealing circuit of the elevator contactor, the elevator contactor and the elevator control system can transmit information. It can effectively monitor whether the elevator contactor has a star-sealing function, whether the star-sealing function is effective, and the current specifications of the elevator contactor, etc., to achieve online monitoring and detection of the elevator star-sealing braking process, ensuring the safety, effectiveness and controllability of the star-sealing braking process.

[0020] 2. This utility model sends a voltage command to the monitoring device through the elevator control system. The MCU control unit circuit in the monitoring device sends a pulse signal based on the collected resistance value of the three-phase star-sealing circuit of the elevator contactor and the conditions set by the elevator system. Finally, the pulse signal is fed back to the elevator control system to realize the information transmission between the elevator contactor and the elevator control system, ensuring that the star-sealing braking function is timely and effective.

[0021] 3. This utility model greatly simplifies the elevator system setup, and can effectively monitor whether the elevator contactor has a star-sealing function, whether the star-sealing function is effective, and the current specifications of the elevator contactor without the need for slip detection.

[0022] 4. The function of the optocoupler solid-state relay in the pulse drive control unit circuit of this utility model is to isolate signals and improve the reliability of the detection device. If there is no optocoupler solid-state relay at this point, it will not play an isolation role and may cause signal interference, resulting in a decrease in the reliability of the signals detected by the elevator control system. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the integrated control box of this utility model;

[0025] Figure 3 This is a schematic diagram of the power input module and pulse signal output module of the elevator host computer system of this utility model;

[0026] Figure 4 This is a schematic diagram illustrating the working principle of this utility model;

[0027] Figure 5 This is a schematic diagram of the circuit layout of the pulse signal generator module of this utility model;

[0028] Figure 6 This is a schematic diagram of the circuit connection of the pulse drive control unit of this utility model.

[0029] In the diagram: 1. Pulse signal generator module; 101. MCU control unit circuit; 102. Pulse drive control unit circuit; 1021. Optocoupler solid-state relay; 1022. Amplifier; 1023. Resistor; 103. Voltage regulator unit circuit; 104. AC / DC conversion unit circuit; 105. Resistance acquisition unit circuit; 2. Elevator host computer system power input module; 3. Pulse signal output module; 4. Integrated control box; 5. Elevator contactor; 6. Elevator control system. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0031] like Figures 1 to 4As shown, a device for monitoring the effectiveness of a star-sealing circuit of an elevator contactor includes: an integrated control box 4, disposed inside or on top of the elevator contactor 5; a pulse signal generator module 1, an elevator host computer system power input module 2, and a pulse signal output module 3, all disposed within the integrated control box 4; wherein, the resistance acquisition section of the pulse signal generator module 1 is connected in parallel with the output terminal of the three-phase star-sealing circuit of the elevator contactor 5, for acquiring the resistance value of the star-sealing circuit; the electrical connection ports of the pulse signal generator module 1 are respectively connected to the elevator host computer system power input module 2 and the pulse signal output module 3; the elevator host computer system power input module 2 is connected to the power supply voltage transmission section of the elevator control system 6; and the pulse signal output module 3 is connected to the pulse signal receiving section of the elevator control system 6.

[0032] like Figure 5 As shown, the pulse signal generator module 1 includes: an AC / DC conversion unit circuit 104, connected to the elevator control system 6 via the elevator host computer system power input module 2; a voltage regulator unit circuit 103, connected to the AC / DC conversion unit circuit 104; an MCU control unit circuit 101, connected to the voltage regulator unit circuit 103; a resistance acquisition unit circuit 105, connected to the MCU control unit circuit 101, and connected in parallel to the three-phase star-sealed circuit output terminal of the elevator contactor 5; and a pulse drive control unit circuit 102, connected to the resistance acquisition unit circuit 105, and connected to the elevator control system 6 via the pulse signal output module 3. The elevator host computer system power input module 2 and the pulse signal output module 3 are respectively a cage-type spring terminal block, a quick-connect terminal block, or a screw-press type terminal block. Each terminal block is built into the integrated control box 4 and is electrically connected to the AC / DC conversion unit circuit 104 and the pulse drive control unit circuit 102 of the pulse signal generator module 1 via lead-out pins.

[0033] like Figure 6 As shown, the pulse drive control unit circuit 102 includes an optocoupler solid-state relay 1021, which is connected to a resistor 1023 and an amplifier 1022 respectively. The optocoupler solid-state relay 1021 is connected to the elevator control system 6 through the pulse signal output module 3.

[0034] In use, the elevator control system 6 transmits the power supply voltage to the pulse signal generator module 1 through the power input module 2 of the elevator host computer system. After the circuit in the pulse signal generator module 1 converts the voltage, it outputs a pulse signal and feeds the pulse signal back to the elevator control system 6 through the pulse signal output module 3. This enables information transmission between the elevator contactor 5 and the elevator control system 6, and is used to effectively monitor the sealing control function and on-machine status of the elevator contactor 5.

[0035] The pulse signal generator module 1 integrates an MCU control unit circuit 101, a pulse drive control unit circuit 102, a voltage regulator unit circuit 103, an AC / DC conversion unit circuit 104, and a resistance acquisition unit circuit 105. The elevator control system 6 transmits power voltage to the AC / DC conversion unit circuit 104 via the elevator host computer system power input module 2, and then transmits the DC voltage to the MCU control unit circuit 101 via the voltage regulator unit circuit 103. The MCU control unit circuit 101, based on the resistance value of the three-phase star-sealing circuit acquired by the resistance acquisition unit circuit 105 during the star-sealing state of the elevator contactor 5, and according to the conditions set by the elevator control system 6, sends a pulse signal. The pulse signal passes through the amplifier 1022 of the pulse drive control unit circuit 102, and is then sent by the amplifier 1022 to the optocoupler solid-state relay 1021. The optocoupler solid-state relay 1021 feeds back the pulse signal to the elevator control system 6 through the pulse signal output module 3. The elevator control system 6 determines whether the elevator contactor 5 has a star-sealing function, whether the star-sealing function is effective, and the current specifications of the elevator contactor based on the period and pulse width of the pulse signal.

[0036] The output of the pulse signal generator module 1 is an active signal. The power supply of the pulse signal generator module 1 must be provided by the elevator control system 6. Only in this way can the elevator control system 6 reliably detect the pulse signal, realize online monitoring and detection of the elevator star-sealing braking process, and ensure the safety, effectiveness and controllability of the star-sealing braking process.

[0037] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A device for monitoring the effectiveness of a sealing star in an elevator contactor, characterized in that, include: An integrated control box (4) is located inside the elevator contactor (5) or on top of the elevator contactor (5); The pulse signal generator module (1), the elevator host computer system power input module (2), and the pulse signal output module (3) are all located in the integrated control box (4); Among them, the resistance acquisition part of the pulse signal generator module (1) is connected in parallel with the three-phase star-sealing circuit output terminal of the elevator contactor (5) to acquire the resistance value of the star-sealing circuit; the electrical connection port of the pulse signal generator module (1) is connected to the power input module (2) of the elevator host computer system and the pulse signal output module (3) respectively; the power input module (2) of the elevator host computer system is connected to the power supply voltage transmission part of the elevator control system (6); the pulse signal output module (3) is connected to the pulse signal receiving part of the elevator control system (6).

2. The device for monitoring the effectiveness of a sealing ring on an elevator contactor according to claim 1, characterized in that, The pulse signal generator module (1) includes: AC / DC conversion unit circuit (104) is connected to elevator control system (6) through elevator host computer system power input module (2); The voltage regulator unit circuit (103) is connected to the AC / DC conversion unit circuit (104); The MCU control unit circuit (101) is connected to the voltage regulator unit circuit (103); The resistance acquisition unit circuit (105) is connected to the MCU control unit circuit (101) and is connected in parallel to the three-phase star-sealed circuit output terminal of the elevator contactor (5); The pulse drive control unit circuit (102) is connected to the resistance acquisition unit circuit (105) and is connected to the elevator control system (6) through the pulse signal output module (3).

3. The device for monitoring the effectiveness of a sealing ring on an elevator contactor according to claim 2, characterized in that: The pulse drive control unit circuit (102) includes an optocoupler solid-state relay (1021), which is connected to a resistor (1023) and an amplifier (1022) respectively. The optocoupler solid-state relay (1021) is connected to the elevator control system (6) through the pulse signal output module (3).

4. The device for monitoring the effectiveness of a sealing ring on an elevator contactor according to claim 2, characterized in that: The power input module (2) and the pulse signal output module (3) of the ladder computer system are respectively a cage spring terminal block, a quick plug terminal block or a screw crimp terminal block. Each terminal block is built into the integrated control box (4) and is electrically connected to the AC / DC conversion unit circuit (104) and the pulse drive control unit circuit (102) of the pulse signal generator module (1) through lead-out pins.

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