Elevator brake release device and system

Abstract

The elevator brake releasing device and system disclosed by the embodiment of the application comprises an interface module, a brake releasing operation module and a connecting line, the brake releasing operation module is provided with a brake releasing circuit of a brake releasing button, the interface module comprises a first interface and a second interface, a control module and the brake releasing operation module are connected with the interface module, when a brake holding power module is connected with the first interface through the connecting line, a safety circuit of the control module is connected with a safety circuit input port of the brake holding power module; when the brake holding power module is connected with the second interface through the connecting line, the brake releasing circuit is connected with the safety circuit input port of the brake holding power module, the brake holding power module supplies power to the brake to realize brake releasing when the brake releasing button is pressed, a bypass short circuit is not needed to be added to the safety circuit in the elevator, and an independent power supply is not needed to be arranged for the elevator brake releasing device, which not only meets the requirements of the elevator safety standard, but also reduces the volume of the whole elevator system, and facilitates the wiring installation of the elevator system in the shaft.

Description

Technical Field

[0001] The present invention relates to the field of elevator technology, and in particular to an elevator brake release device and system. Background Technology

[0002] As an essential transportation device in buildings, vertical elevators are equipped with brake devices to prevent the elevator car from falling rapidly in case of elevator malfunction, in order to ensure the personal safety of passengers in case of elevator failure.

[0003] The brake device includes a brake power module, a control module connected to the brake power module, and a brake. The control module includes a safety circuit for the elevator system. When the elevator is operating normally, the safety circuit is activated, and the brake power module supplies power to the brake, causing it to be in a released state. When the elevator malfunctions, the safety circuit is deactivated, and the brake module stops supplying power to the brake, causing it to be in a braked state. To provide manual rescue in case of elevator malfunction, existing technology typically includes a brake release device in the control module that is connected in parallel with the safety circuit and is unrelated to normal elevator operation. This brake release device achieves release by bypassing and short-circuiting the safety circuit, and it requires an independent power circuit. On the one hand, connecting the brake release device in parallel with the safety circuit does not meet elevator safety standards; on the other hand, requiring an independent power circuit for the brake release device increases the overall size of the elevator system, which is not conducive to wiring and installation within the elevator shaft. Summary of the Invention

[0004] This invention provides an elevator brake release device and system to solve the problems of existing brake release devices not meeting elevator safety standards and being too bulky.

[0005] In a first aspect, embodiments of the present invention provide an elevator brake release device applied to an elevator brake release system. The elevator brake release system includes a brake power module, a control module, and a brake. The control module includes a safety circuit, and the brake power module includes a safety circuit input port. The elevator brake release device includes an interface module, a brake release operation module, and connecting lines. The brake release operation module is provided with a brake release circuit including a brake release button. The interface module includes a first interface and a second interface. Both the control module and the brake release operation module are connected to the interface module.

[0006] When the brake power module is connected to the first interface via the connecting line, the safety circuit of the control module is connected to the safety circuit input port of the brake power module. When the safety circuit is disconnected, the brake power module stops supplying power to the brake, and the brake engages.

[0007] When the brake power module is connected to the second interface via the connecting line, the brake release circuit of the brake release operation module is connected to the safety circuit input port of the brake power module. When the brake release button is pressed, the brake power module supplies power to the brake, and the brake is released.

[0008] Secondly, embodiments of the present invention provide an elevator brake release system, including a brake power module, a control module, a brake, and the elevator brake release device described in the first aspect. When the brake power module is connected to the first interface of the interface module of the elevator brake release device via the connecting line, the safety circuit of the control module is connected to the safety circuit input port of the brake power module. When the brake power module is connected to the second interface of the interface module of the elevator brake release device via the connecting line, the brake release circuit of the brake release operation module is connected to the safety circuit input port of the brake power module.

[0009] In this embodiment of the invention, the elevator brake release device includes an interface module, a brake release operation module, and a connecting line. The brake release operation module is equipped with a brake release circuit including a brake release button. The interface module includes a first interface and a second interface. Both the control module and the brake release operation module are connected to the interface module. When a brake release operation is required, the brake power supply module and the brake release operation module are connected through the connecting line, so that the brake release circuit in the brake release operation module is connected to the safety circuit input port of the brake power supply module. The brake release circuit replaces the safety circuit. When the brake release circuit is activated by operating the brake release button in the brake release circuit, it can drive the brake power supply module to supply power to the brake, so that the brake is released. There is no need to add a bypass short-circuit circuit to the safety circuit in the elevator, which meets the requirements of elevator safety standards. Moreover, there is no need to set up an independent power supply for the elevator brake release device, which reduces the size of the entire elevator system and facilitates the wiring and installation of the elevator system in the shaft. Attached Figure Description

[0010] Figure 1 This is a structural block diagram of an elevator brake release device provided in one embodiment of the present invention;

[0011] Figure 2 This is a schematic diagram of the interface connection of the elevator brake release device in the non-brake release state according to an embodiment of the present invention;

[0012] Figure 3 This is a schematic diagram of the interface connection when the elevator brake release device is in the brake release state according to an embodiment of the present invention;

[0013] Figure 4 This is a structural block diagram of an elevator brake release device according to another embodiment of the present invention;

[0014] Figure 5 This is a schematic diagram of the internal structure of the elevator brake release device according to an embodiment of the present invention;

[0015] Figure 6 This is a schematic diagram of the internal structure of an elevator brake release device according to another embodiment of the present invention. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0017] Example 1

[0018] Figure 1 This is a schematic diagram of an elevator brake release device provided in an embodiment of the present invention. The elevator brake release device of the present invention is applied to an elevator brake release system, such as... Figure 1 As shown, the elevator brake release system includes a brake power supply module 1, a control module 2, and a brake 3. The control module 2 includes a safety circuit 20, the brake power supply module 1 includes a safety circuit input port 10, and the elevator brake release device includes an interface module 4, a brake release operation module 5, and a connecting line 6. The brake release operation module 5 is equipped with a brake release circuit including a brake release button. The interface module 4 includes a first interface 41 and a second interface 42. The control module 2 and the brake release operation module 5 are both connected to the interface module 4.

[0019] The elevator in this embodiment can be a vertical elevator, which can be used in commercial buildings or in homes. The brake power module 1 can be a module that supplies power to the brake 3 in the elevator. When the brake power module 1 stops supplying power, the brake 3 engages the brake, causing the elevator car to stop moving up and down. When the brake power module 1 supplies power, the brake 3 releases the brake, allowing the elevator car to move up and down. The control module 2 can be a module that includes the safety circuit 20 of the elevator system. The brake release operation module 5 can be a module that, after the brake 3 engages the brake, drives the brake power module 1 to supply power to the brake 3 through the brake release button in the brake release operation module 5, thereby releasing the brake 3.

[0020] like Figures 1-3 As shown, the first interface 41 and the second interface 42 of the interface module 4 in this embodiment can be sockets. The brake power module 1 can be provided with an interface A socket. The two ends of the connecting line 6 are respectively provided with a connecting line plug A and a connecting line plug B. The connecting line plug A is connected to the interface A socket, and the connecting line plug B is plugged into the first interface 41 or the second interface 42. In the interface module 4, the two ends of the safety circuit 20 in the control module 2 are connected to the first interface 41, for example, to two pins in the first interface 41. The brake release circuit in the brake release operation module 5 is connected to the second interface 42, for example, to two pins in the second interface 42.

[0021] like Figure 2 As shown, in the non-released state, the connector B is plugged into the first interface 41. The two ends of the safety circuit 20 in the control module 2 are connected to the safety circuit input port of the brake power module 1 through the first interface 41 of the interface module 4, connector B, connector 6, connector A, and interface A socket. When the elevator is in a normal safety circuit 20 conduction state, the safety circuit 20 outputs a signal to the brake power module 1, the brake power module 1 supplies power to the brake 3, the brake 3 is in the released state, and the elevator car can move up and down. When the elevator is in an abnormal safety circuit 20 disconnection state, the safety circuit 20 stops outputting a signal to the brake power module 1, the brake power module 1 stops supplying power to the brake 3, the brake 3 is in the braked state, and the elevator car cannot move up and down.

[0022] like Figure 3 As shown, when the brake 3 is in the holding state and needs to be released, the connecting wire plug B is inserted into the second interface 42 of the interface module 3. This allows the release circuit in the release operation module 5 to be connected to the safety circuit input port of the holding brake power module 1 through the second interface 42 of the interface module 4, the connecting wire plug B, the connecting wire 6, the connecting wire plug A, and the interface A socket. This replaces the safety circuit 20 with the safety circuit input port of the holding brake power module 1. When releasing the brake, pressing the release button closes the release circuit 5, simulating the closure of the safety circuit 20, thereby driving the holding brake power module 1 to supply power to the brake 3 to release the brake. Compared with the existing technology that sets a bypass circuit in the safety circuit to short-circuit the safety circuit to release the brake, this eliminates the need for a bypass design unrelated to elevator operation in parallel with the elevator safety circuit, ensuring elevator safety and meeting elevator safety standards. Furthermore, it eliminates the need for an independent power circuit for the release operation module, reducing the size of the elevator release device and facilitating wiring of the elevator system in the shaft.

[0023] like Figure 4As shown, in one embodiment, the brake power module 1 includes a power supply circuit 11 with an electronic switch, a PWM controller 13, an MCU 14, and an isolation converter 12. The safety circuit input port 10 includes a DC positive output port and an isolation converter input port. The MCU 14 is connected to the PWM controller 13, which is connected to both the isolation converter 12 and the electronic switch of the power supply circuit 11. The isolation converter 12 is connected to the isolation converter input port in the safety circuit input port 10. The input and output terminals of the safety circuit 20 are connected to a first interface 41. When the brake power module 1 is connected to the first interface 41 via a connecting cable, the DC positive output port is connected to the input terminal of the safety circuit 20 through the first interface 41, and the isolation converter input port is connected to the output terminal of the safety circuit 20 through the first interface 41. When the safety circuit 20 is on, the DC positive output port supplies power to the PWM controller 13 through the safety circuit 20 and the isolation converter 12. The PWM controller 13 then supplies power according to the MCU... The signal from 14 outputs a control signal to the electronic switch in the power supply circuit 11, and the power supply circuit 22 supplies power to the brake 3. The brake 3 releases. When the safety circuit 20 is disconnected, the PWM controller 13 loses power and stops outputting control signals to the electronic switch in the power supply circuit 11. The power supply circuit 11 stops supplying power to the brake 3, and the brake 3 engages.

[0024] In one example, such as Figure 5 As shown, in the brake power supply module 1, the power supply circuit 11 includes multiple electronic switches (Q1, Q2, Q3, Q4). The safety circuit input port 10 includes a DC positive output port vcc and an isolation converter input port in1. The first interface 41 of the interface module 4 includes pins pin1, pin2, pin3, and pin4. Pin3 of the first interface 41 is connected to the input terminal in2 of the safety circuit 20, and pin4 of the first interface 41 is connected to the output terminal out2 of the safety circuit 20. The brake power supply module 1 also includes a power input port P24 and a grounding port GD24, so as to connect to an external power source through the power input port P24 to provide working power to the brake power supply module 1.

[0025] like Figure 5As shown, when the brake power supply module 1 is connected to the first interface 41 via a connecting line, the DC positive output port vcc is connected to the input terminal in2 of the safety circuit 20 via pin3 of the first interface 41, and the isolation converter input port in1 is connected to the output terminal out2 of the safety circuit 20 via pin4 of the first interface 41. When the safety circuit 20 is on, the DC positive output port vcc supplies power to the PWM controller 13 through the safety circuit 20 and the isolation converter 12. The PWM controller 13 outputs control signals to the electronic switch in the power supply circuit 11 according to the signal of the MCU 14. The power supply circuit 11 supplies power to the brake 3, and the brake 3 releases. When the elevator malfunctions and causes the safety circuit 20 to disconnect, the DC positive output port vcc cannot supply power to the isolation converter 12 through the safety circuit 20. The PWM controller 13 loses power and stops outputting control signals to the electronic switch in the power supply circuit 11. The power supply circuit 11 stops supplying power to the brake 3, and the brake 3 engages.

[0026] like Figure 5 As shown, in another optional embodiment, the brake power module 1 further includes a first communication port 15, a brake opening drive signal input port dr_in, and a brake opening drive feedback signal output port re_out. The control module 2 includes a second communication port 21, a brake opening drive signal output port dr_out, and a brake opening drive feedback signal input port re_in. In the interface module 4, the brake opening drive signal output port re_out is connected to pin 1 of the first interface 41, the brake opening drive feedback signal input port re_in is connected to pin 2 of the first interface 41, and the first communication port 15 is connected to the second communication port 21. When the brake power module 1 is connected to the first interface 41 via a connecting line, the brake opening drive signal input port dr_in is connected to the brake opening drive signal output port dr_out via pin 1 of the first interface 41, and the brake opening drive feedback signal output port re_out is connected to the brake opening drive feedback signal input port re_in via pin 2 of the first interface 41.

[0027] After the elevator malfunctions and the safety circuit 20 is activated due to the release of the brake 3, the control module 2 can send a release drive signal to the MCU 14 of the brake power module 1 through the brake release drive signal output port dr_out and the brake release drive signal input port dr_in, and send a release voltage and / or release current to the MCU 14 of the brake power module 1 through the first communication port 15 and the second communication port 21. The MCU 14 in the brake power module 1 generates a control command based on the release voltage and / or release current and outputs it to the PWM controller 13, so that the PWM controller 13 outputs a control signal to the electronic switch of the power supply circuit 11, and the power supply circuit 11 supplies power to the brake 3, causing the brake 3 to release. 14. When the PWM controller 13 outputs a control signal, it also outputs a drive feedback signal to the control module 2 through the brake opening drive feedback signal output port re_out. When the control module 2 does not receive the drive feedback signal, it controls the elevator to stop running, so that the elevator is prohibited from running when the brake power supply module 1 is abnormal. This avoids safety accidents caused by the PWM controller 13 being unable to output a control signal to control the power supply circuit 11 when the elevator is abnormal, and ensures the safe operation of the elevator.

[0028] like Figure 4 and Figure 5 As shown, in one embodiment, the brake power module 1 further includes a battery circuit 16 connected to the input terminal of the power supply circuit 11. The brake release circuit includes an enable signal output circuit 51, a brake release signal output circuit 52, a first brake release button BTN1, and a second brake release button BTN2. The first brake release button BTN1 includes a first normally open contact P1 and a second normally open contact P2 that are linked together. The second brake release button BTN2 includes a third normally open contact P3 and a fourth normally open contact P4 that are linked together. The first normally open contact P1 and the third normally open contact P3 are connected in series in the enable signal output circuit 51, and the enable signal is output. Circuit 51 is connected to the brake power module 1. Specifically, the brake power module 1 also includes a battery activation signal input port BAT1, a common input port COM1, and a brake release drive input port DR1. One port BAT2 of the enable signal output circuit 51 is connected to the battery activation signal input port BAT1, and the other port DR2 is connected to the brake release drive input port DR1. The common node of the first normally open contact P1 and the third normally open contact P3 in the enable signal output circuit 51 is connected to the common input port COM1 through the common output port COM2 of the enable signal output circuit 51.

[0029] The second normally open contact P2 of the first release button BTN1 and the fourth normally open contact P4 of the second release button BTN2 are connected in series in the release signal output circuit 52. The two ports of the release signal output circuit 52 are connected to the second interface 42 of the interface module 4. Specifically, the input terminal in3 of the release signal output circuit 52 is connected to the pin 3 of the second interface 42, and the output terminal out3 of the release signal output circuit 52 is connected to the pin 4 of the second interface 42.

[0030] like Figure 5 As shown, when the brake power module 1 is connected to the second interface 42, the DC positive output port vcc and the isolation converter input port in1 in the safety circuit input port 10 of the brake power module 1 are disconnected from the safety circuit 20 of the control module 2. The DC positive output port vcc is connected to the input terminal in3 of the release signal output circuit 52 of the release operation module 5 through the pin pin3 of the second interface 42, and the isolation converter input port in1 is connected to the output terminal out3 of the release signal output circuit 52 of the release operation module 5 through the pin pin4 of the second interface 42.

[0031] like Figure 5 As shown, when the first brake release button BTN1 is pressed, the first normally open contact P1 of the first brake release button BTN1 closes, and the enable signal output circuit 51 outputs a first enable signal to the brake power module 1 through port BAT2 and battery activation signal input port BAT1. When the MCU 14 of the brake power module receives the first enable signal, it activates the battery circuit 16, so that the brake power module 1 switches to supply power to the power supply circuit 11 through the battery and battery circuit 16. When the second brake release button BTN2 is pressed, the third normally open contact P3 of the second brake release button BTN2 closes, and the enable signal output circuit 51 outputs a second enable signal to the brake power module 1 through port DR2 and brake release drive input port DR1. When the MCU 14 of the brake power module receives the second enable signal, it determines that it has entered the brake release mode.

[0032] Simultaneously, when both the first release button BTN1 and the second release button BTN2 are pressed, the second normally open contact P2 and the fourth normally open contact P4 are closed, and the release signal output circuit 52 is turned on. The input terminal in3 of the release signal output circuit 52 is connected to the DC positive output port vcc through the pin3 of the second interface 42, and the output terminal out3 of the release signal output circuit 52 is connected to the input port in1 of the isolation converter through the pin4 of the second interface 42. The isolation converter 12 is powered to supply power to the PWM controller 13. The PWM controller 13 outputs control signals to the electronic switch in the power supply circuit 11, and the power supply circuit 11 supplies power to the brake 3, and the brake 3 is released. Thus, the release signal output circuit 52 replaces the safety circuit 20 to drive the brake power module 1 to release the brake, without the need to design a bypass short circuit to release the safety circuit 20.

[0033] like Figure 6 As shown, in one embodiment, the enable signal output circuit 51 further includes a first overspeed protection switch over_speed1, the brake release signal output circuit 52 further includes an overspeed protection switch over_speed2 and an emergency stop switch stop, and the brake release operation module 5 further includes a plug PL, a first socket S1 and a second socket S2. The emergency stop switch stop includes a normally closed contact and a normally open contact. The normally closed contact is connected in series in the safety circuit 20, and the normally open contact is connected in series in the brake release signal output circuit 52. The first socket S1 includes a first socket status feedback output. The first socket status feedback output terminal re_J2 is connected to the socket status feedback input terminal re_J1 of the control module 2. The second socket S2 includes a fourth normally open contact (composed of P21 and P22) and a fifth normally open contact (composed of P23 and P24). The common node of the first normally open contact P1 and the third normally open contact P3 is connected to the common output port COM2 through the fourth normally open contact (P21 and P22). The fifth normally open contact (P23 and P24) is connected in series in the release signal output circuit 52.

[0034] When plug PL is inserted into the first socket S1, the release operation module 5 outputs a non-release mode status signal to the control module 2 through the first socket status feedback output terminal re_J2. When plug PL is inserted into the second socket S2, the release operation module 5 stops outputting the non-release mode status signal to the control module 2, and the control module 2 and the release operation module 5 enter the release mode.

[0035] like Figure 6As shown, during normal elevator operation, the brake power module 1 is connected to the first interface 41 of the interface module via a connecting cable. The plug PL in the brake release operation module 5 is inserted into the first socket S1. The brake release operation module 5 outputs a signal indicating that the plug PL is inserted into the first socket S1 to the control module 2 through the status feedback output terminal re_J2 of the first socket, which is a non-brake release mode status signal. Simultaneously, the brake release operation module 5 also detects that the plug PL is inserted into the first socket S1, achieving dual detection of plug position and the brake release operation module 5 entering the brake release operation state. Since the brake power module 1 is connected to the first interface 41 of the interface module via a connecting cable, the DC positive output port vcc is connected to the input terminal in2 of the safety circuit 20 through pin 3 of the first interface 41, and the isolation converter input port in1 is connected to the output terminal out2 of the safety circuit 20 through pin 4 of the first interface 41. In other words, the brake power module 1 is connected to the safety circuit 20 in the control module 2 through the first interface 41, and whether the brake power module 1 supplies power to the brake 3 is determined by the safety circuit 20.

[0036] When a manual rescue operation is required after the brake is engaged, the brake power module 1 is connected to the second interface 42 of the interface module via a connecting cable. The PL plug in the brake release operation module 5 is inserted into the second socket S2. The brake release operation module 5 stops outputting the signal that the PL plug is inserted into the first socket S1 to the control module 2 through the status feedback output terminal re_J2 of the first socket, i.e., it stops outputting the non-brake release mode status signal to the control module 2. The control module 2 and the brake release operation module 5 enter the brake release mode. Since the brake power module 1 is connected to the second interface 42 of the interface module via a connecting cable, the DC positive output port vcc is connected to the input terminal in3 of the brake release signal output circuit 52 through pin 3 of the second interface 42. The isolation converter input port in1 is connected to the output terminal out3 of the brake release signal output circuit 52 through pin 4 of the second interface 42. In other words, the brake power module 1 is connected to the brake release signal output circuit 52 in the brake release operation module 5 through the second interface 42. After the emergency stop switch stop is pressed, the emergency stop switch stop in the safety circuit 20... When the normally closed contact opens, the normally open contact of the emergency stop switch stop in the brake release signal output circuit 52 closes. The brake release operation module 5 obtains the speed of the car by communicating with the control module 2, and controls the overspeed protection switch over_speed2 in the brake release signal output circuit 52 to close when the speed determines that there is no overspeed. When the first brake release button BTN1 is pressed, the brake power module 1 receives the first enable signal from the battery activation signal input port BAT1, activates the battery circuit 16, and the power supply circuit 11 switches from mains power supply to battery power supply. The brake power module 1 enters the brake release state. When the first release button BTN1 and the second release button BTN2 are pressed simultaneously, the release signal output circuit 52 is turned on. The input terminal in3 of the release signal output circuit 52 is connected to the DC positive output port vcc through the pin3 of the second interface 42, and the output terminal out3 of the release signal output circuit 52 is connected to the input port in1 of the isolation converter through the pin4 of the second interface 42. The isolation converter 12 is powered to supply power to the PWM controller 13. The PWM controller 13 outputs control signals to the electronic switch in the power supply circuit 11. The power supply circuit 11 supplies power to the brake 3, and the brake 3 is released. Thus, the release signal output circuit 52 replaces the safety circuit 20 to drive the brake power module 1 to release the brake, without the need to design a bypass to short-circuit the safety circuit 20 to release the brake.

[0037] In this embodiment, when the brake release device is connected to the brake power supply module through the second interface of the interface module, the brake release signal output circuit replaces the safety circuit to drive the brake power supply module to supply power to the brake to achieve brake release. There is no need to connect a bypass design unrelated to elevator operation in parallel with the elevator safety circuit, which avoids accidents caused by short circuits in the bypass design leading to malfunctions in the safety circuit, ensuring elevator safety and meeting elevator safety standards. Furthermore, there is no need to set up an independent power supply circuit for the brake release operation module, reducing the size of the elevator brake release device and facilitating the wiring of the elevator system in the hoistway.

[0038] Furthermore, the brake release signal output circuit includes an emergency stop switch and an overspeed protection switch. The emergency stop switch can lock the safety circuit during brake release operation, and the overspeed protection switch can prevent the car speed from being too fast during brake release, thus improving the safety performance during brake release operation.

[0039] Furthermore, by installing a plug, a first socket, and a second socket on the brake release operation device, maintenance personnel can switch between the brake release and non-brake release states by plugging in the plug, thus improving elevator safety performance.

[0040] This invention also provides an elevator brake release system, which includes a brake power supply module, a control module, a brake, and an elevator brake release device according to this invention. Figures 1-4 As shown, when the brake power module is connected to the first interface of the elevator brake release device interface module via a connecting cable, the safety circuit of the control module is connected to the safety circuit input port of the brake power module. When the brake power module is connected to the second interface of the elevator brake release device interface module via a connecting cable, the brake release circuit of the brake release operation module is connected to the safety circuit input port of the brake power module.

[0041] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. An elevator brake release device, characterized in that, An elevator brake release system is provided, comprising a brake power supply module, a control module, and a brake. The control module includes a safety circuit, and the brake power supply module includes a safety circuit input port. The elevator brake release device includes an interface module, a brake release operation module, and connecting lines. The brake release operation module is equipped with a brake release circuit including a brake release button. The interface module includes a first interface and a second interface. Both the control module and the brake release operation module are connected to the interface module. When the brake power module is connected to the first interface via the connecting line, the safety circuit of the control module is connected to the safety circuit input port of the brake power module. When the safety circuit is disconnected, the brake power module stops supplying power to the brake, and the brake engages. When the brake power module is connected to the second interface via the connecting line, the brake release circuit of the brake release operation module is connected to the safety circuit input port of the brake power module. When the brake release button is pressed, the brake power module supplies power to the brake, and the brake is released.

2. The elevator brake release device according to claim 1, characterized in that, The brake power supply module includes a power supply circuit with an electronic switch, a PWM controller, an MCU, and an isolation converter. The safety circuit input port includes a DC positive output port and an isolation converter input port. The MCU is connected to the PWM controller. The PWM controller is connected to the isolation converter and the electronic switch of the power supply circuit, respectively. The isolation converter is connected to the isolation converter input port. The input and output terminals of the safety circuit are connected to the first interface. When the brake power module is connected to the first interface via the connecting line, the DC positive output port is connected to the input terminal of the safety circuit via the first interface, and the input port of the isolation converter is connected to the output terminal of the safety circuit via the first interface; When the safety circuit is on, the DC positive output port supplies power to the PWM controller through the safety circuit and the isolation converter. The PWM controller outputs a control signal to the electronic switch in the power supply circuit according to the signal from the MCU. The power supply circuit supplies power to the brake, and the brake is released. When the safety circuit is disconnected, the PWM controller loses power and stops outputting control signals to the electronic switch in the power supply circuit, the power supply circuit stops supplying power to the brake, and the brake engages.

3. The elevator brake release device according to claim 2, characterized in that, The brake power module also includes a battery circuit connected to the input terminal of the power supply circuit. The brake release circuit includes an enable signal output circuit, a brake release signal output circuit, a first brake release button, and a second brake release button. The first brake release button includes a first normally open contact and a second normally open contact that are linked together. The second brake release button includes a third normally open contact and a fourth normally open contact that are linked together. The first normally open contact and the third normally open contact are connected in series in the enable signal output circuit. The enable signal output circuit is connected to the brake power module. When the first release button is pressed, the enable signal output circuit outputs a first enable signal to the brake power module. When the second release button is pressed, the enable signal output circuit outputs a second enable signal to the brake power module. When the MCU of the brake power module receives the second enable signal, it determines to enter the release mode. When it receives the first enable signal, it switches to the battery circuit to supply power to the power supply circuit. The second normally open contact and the fourth normally open contact are connected in series in the release signal output circuit. The two ports of the release signal output circuit are connected to the second interface of the interface module. When the brake power supply module is connected to the second interface, the DC positive output port is connected to one end of the release signal output circuit through the second interface, and the isolation converter input port is connected to the other end of the release signal output circuit through the second interface.

4. The elevator brake release device according to claim 3, characterized in that, The brake power module includes a battery activation signal input port, a common input port, and a brake release drive input port. One port of the enable signal output circuit is connected to the battery activation signal input port, and the other end is connected to the brake release drive input port. The common node of the first normally open contact and the third normally open contact is connected to the common input port.

5. The elevator brake release device according to claim 4, characterized in that, The brake release signal output circuit also includes an overspeed protection switch. The brake release operation module is also connected to the control module and is used to receive speed data from the control module and control the overspeed protection switch according to the speed data.

6. The elevator brake release device according to claim 4, characterized in that, The brake release signal output circuit also includes an emergency stop switch, which includes normally closed contacts and normally open contacts. The normally closed contacts are connected in series in the safety circuit, and the normally open contacts are connected in series in the brake release signal output circuit.

7. The elevator brake release device according to claim 4, characterized in that, The brake release operation module further includes a plug, a first socket, and a second socket. The first socket includes a first socket status feedback output terminal and a second socket status feedback output terminal. The first socket status feedback output terminal is connected to the control module. The second socket includes a fourth normally open contact and a fifth normally open contact. The common node of the first normally open contact and the third normally open contact is connected to the common output port through the fourth normally open contact. The fifth normally open contact is connected in series in the brake release signal output circuit. When the plug is inserted into the first socket, the release operation module outputs a non-release mode status signal to the control module through the status feedback output terminal of the first socket. When the plug is inserted into the second socket, the release operation module stops outputting the non-release mode status signal to the control module, and the control module and the release operation module enter the release mode.

8. The elevator brake release device according to any one of claims 2-7, characterized in that, The brake power module further includes a first communication port, a brake opening drive signal input port, and a brake opening drive feedback signal output port. The control module includes a second communication port, a brake opening drive signal output port, and a brake opening drive feedback signal input port. The brake opening drive signal output port and the brake opening drive feedback signal input port are connected to the first interface. The first communication port is connected to the second communication port. When the brake power module is connected to the first interface through the connecting line, the brake opening drive signal input port is connected to the brake opening drive signal output port, and the brake opening drive feedback signal output port is connected to the brake opening drive feedback signal input port.

9. The elevator brake release device according to claim 8, characterized in that, The control module is used for: The system sends a release drive signal to the MCU of the brake power module through the brake opening drive signal output port and the brake opening drive signal input port, and sends a release voltage and / or release current to the MCU of the brake power module through the first communication port and the second communication port. The MCU in the brake power module is used to generate control commands based on the release voltage and / or release current and output them to the PWM controller, so that the PWM controller outputs control signals to the electronic switch of the power supply circuit. The MCU is also used to output a drive feedback signal to the control module through the gate opening drive feedback signal output port when the PWM controller outputs a control signal; The control module stops the elevator when it does not receive a drive feedback signal.

10. An elevator brake release system, characterized in that, The device includes a brake power module, a control module, a brake, and an elevator brake release device as described in any one of claims 1-9. When the brake power module is connected to the first interface of the interface module of the elevator brake release device via the connecting line, the safety circuit of the control module is connected to the safety circuit input port of the brake power module. When the brake power module is connected to the second interface of the interface module of the elevator brake release device via the connecting line, the brake release circuit of the brake release operation module is connected to the safety circuit input port of the brake power module.

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