CN212374647U - Elevator rapid stopping system - Google Patents
Elevator rapid stopping system Download PDFInfo
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- CN212374647U CN212374647U CN202020449963.0U CN202020449963U CN212374647U CN 212374647 U CN212374647 U CN 212374647U CN 202020449963 U CN202020449963 U CN 202020449963U CN 212374647 U CN212374647 U CN 212374647U
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Abstract
The utility model provides a rapid elevator shutdown system, which comprises a band-type brake power supply board and an electronic safety board, wherein the band-type brake power supply board is in signal connection with the electronic safety board; the electronic safety board is connected with at least one safety switch and detects the signal state of the connected safety switch, and when the signal state of the safety switch is abnormal, the electronic safety board generates a shutdown signal and sends the shutdown signal to the band-type brake power panel; the band-type brake power panel comprises a rectifying unit for supplying power to a band-type brake loop; and the contracting brake power panel controls the rectifying unit to stop supplying power to the contracting brake braking loop when receiving a stop signal from the electronic safety panel. The embodiment of the utility model provides a not only can shut down fast, the contracting brake braking circuit disconnection problem that leads to when having avoided unusual shut down moreover has avoided the safety risk that draws the arc production, has improved the life of device.
Description
Technical Field
The embodiment of the utility model provides a relate to elevator control field, more specifically say, relate to a quick shutdown system of elevator.
Background
The elevator is a device which vertically moves among different floors in a shaft, a car door is arranged on an elevator car, a shaft door is correspondingly arranged on the wall of the shaft and leads to each floor, and passengers can get in and out of the car by opening the car door and the shaft door. In order to ensure that the elevator can run safely, a plurality of electrical safety devices are arranged on the elevator, and the elevator can run only when each electrical safety device is normal. As shown in fig. 1, there is one safety switch 11 corresponding to each electric safety device, and all the safety switches are connected in series to form a safety chain loop, in the safety chain loop, there are also provided an operating contactor coil S1 and a brake contactor coil S2, in combination with switches Y1 and Y2 controlled by an elevator main control board, the safety chain loop can control on and off of an operating contactor switch K1 and a brake contactor switch K2 in the brake loop shown in fig. 2, thereby realizing power supply control of the brake coil 14 in the brake loop.
In the brake loop, the brake power board 12 does not include a controller, and its input terminal is 220V ac and outputs 110V dc to drive the brake coil 14. When the elevator is normally stopped, a control system (an elevator main control board) controls the operation contactor switch K1 and the brake contactor switch K2 to be disconnected through the switches Y1 and Y2 so that a brake loop is disconnected (namely, a brake coil is disconnected); when abnormal shutdown is caused by abnormal safety switch signals, the running contactor coil S1 and the band-type brake contactor coil S2 are powered off by disconnecting the safety chain loop, so that the running contactor switch K1 and the band-type brake contactor switch K2 are disconnected, and the band-type brake loop is disconnected.
Since the band-type brake coil 14 is an inductive load, after the band-type brake is normally opened, a current loop is formed between the band-type brake power supply board 12 and the band-type brake coil 14, as shown in fig. 3. When the operating contactor switch K1 or the brake contactor switch K2 is turned off with electricity, because the current of the inductor does not suddenly change, at the moment when the operating contactor switch K1 or the brake contactor switch K2 is turned off, electromagnetic energy needs to generate self-induction high voltage by a breakpoint to break through air to maintain current, so that an arc is generated (for example, at the operating contactor switch K1 or the brake contactor switch K2), and energy is released by the heat of the arc. To avoid the generation of the arc, an arc extinguishing device 13 may be connected to the band-type brake coil 14, which forms a new loop with the band-type brake coil 14, and consumes energy in the inductive load by means of the new loop, thereby preventing the generation of the arc, as shown in fig. 4.
However, the arc extinguishing device 13 can only generate a new loop to consume inductive load energy when the operating contactor switch K1 or the contracting brake contactor switch K2 is switched off in a live state, so that the problem of arc discharge cannot be fundamentally solved, and the arc discharge prevention effect is not ideal.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a to above-mentioned band-type brake braking circuit, produce the problem of drawing the arc in the twinkling of an eye easily at operation contactor switch or band-type brake contactor switch disconnection, provide a quick shutdown system of elevator.
The embodiment of the utility model provides a technical scheme for solving the technical problems is to provide a rapid elevator shutdown system, which comprises a band-type brake power supply board and an electronic safety board, wherein the band-type brake power supply board is in signal connection with the electronic safety board;
the electronic safety board is connected with at least one safety switch and detects the signal state of the connected safety switch, and when the signal state of the safety switch is abnormal, the electronic safety board generates a shutdown signal and sends the shutdown signal to the band-type brake power panel;
the band-type brake power panel comprises a rectifying unit for supplying power to a band-type brake loop; and the contracting brake power panel controls the rectifying unit to stop supplying power to the contracting brake braking loop when receiving a stop signal from the electronic safety panel.
Preferably, the electronic safety board comprises a first logic processing unit, a signal output terminal and at least one detection terminal connected to the safety switch, the first logic processing unit is respectively connected with the signal output terminal and each detection terminal, and the first logic processing unit outputs a shutdown signal through the signal output terminal when a signal of any detection terminal is abnormal;
the band-type brake power supply board comprises a second logic processing unit and a signal input terminal, and supplies power to a band-type brake circuit through a direct current output end of the rectifying unit; the signal input terminal of band-type brake power strip is connected to the signal output terminal of electron safety plate, the second logic processing unit with signal input terminal connects, and the second logic processing unit is in when signal input terminal receives shutdown signal control the rectifier unit stops the power supply output.
Preferably, the elevator system of shutting down fast still includes the main control board, the main control board respectively with electron safety plate band-type brake power strip signal connection, the main control board receives the status signal that comes from the electron safety plate, and when the status signal is not conform to the preset condition, the main control board to band-type brake power strip sends signal control the rectifier unit stops to band-type brake braking circuit power supply.
Preferably, the band-type brake braking circuit includes band-type brake contactor switch, operation contactor switch and band-type brake coil, just band-type brake coil via operation contactor switch and band-type brake contactor switch with the direct current output of the rectifier unit of band-type brake power strip is connected.
Preferably, the elevator rapid shutdown system comprises a switch control loop, the switch control loop comprises a first branch, a second branch and a safety relay, the first branch and the second branch are connected between a high-voltage sampling point and a reference ground in parallel, and the safety relay is connected between a power supply and the high-voltage sampling point; the first branch comprises a first switch and a band-type brake contactor coil, the first switch and the band-type brake contactor coil are connected in series, the band-type brake contactor coil is used for controlling the on-off of the band-type brake contactor switch, and the second branch comprises a second switch and an operation contactor coil, the second switch and the operation contactor coil are connected in series, and the operation contactor coil is used for controlling the on-off of the operation contactor switch;
the main control board is respectively connected with the control ends of the first switch and the second switch, and controls the first switch and the second switch to be switched off when the state signal does not accord with a preset condition; and the first logic processing unit controls the safety relay to be switched off when the signal of any detection terminal is abnormal.
Preferably, the main control board includes a voltage detection unit, and the main control board is connected to a high-voltage sampling point of the switch control loop through the voltage detection unit, and controls the first switch and the second switch to be turned off when the voltage at the high-voltage sampling point is lower than a preset voltage, and sends a control instruction to the second logic processing unit to enable the second logic processing unit to control the rectification unit to stop power supply output.
Preferably, the signal input terminal of the band-type brake power supply board is connected with the signal output terminal of the electronic safety board through a signal wire.
The utility model discloses elevator system of shutting down fast acquires the safety switch state through the electron safety plate to the power supply of brake braking circuit is cut off when the safety switch state is unusual, not only can shut down fast, and the arc problem that draws that brake braking circuit disconnection leads to when having avoided unusual shut down moreover has avoided the safety risk that draws the arc production, has improved the life of device.
Drawings
Fig. 1 is a schematic view of a safety chain circuit in a prior-art elevator;
fig. 2 is a schematic diagram of a band-type brake circuit in a conventional elevator;
figure 3 is a schematic diagram of the current loop in the brake loop of the band-type brake at the instant of disconnection of the operating contactor switch or the band-type brake contactor switch;
figure 4 is a schematic view of the current loop in the brake circuit with the arc extinguishing device connected to the operating contactor switch or the brake contactor switch at the instant of disconnection;
fig. 5 is a schematic view of an elevator rapid shutdown system provided by an embodiment of the present invention;
fig. 6 is a schematic view of an elevator rapid shutdown system according to another embodiment of the present invention;
fig. 7 is a schematic view of an elevator rapid shutdown system according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below 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 are not intended to limit the invention.
The utility model discloses realize elevator shutdown control based on PESSRAL (Programmable Electric Systems in Safety Related application for Lifts), can simplify elevator machine room control system's wiring, reduce installation and maintenance cost.
As shown in fig. 5, is the schematic diagram of the elevator fast stop system provided by the embodiment of the present invention, this elevator fast stop system can be used for an elevator control system, and assists the stop control of the elevator. The elevator rapid shutdown system of this embodiment includes electron safety plate 31 and band-type brake power strip 32, and band-type brake power strip 32 and electron safety plate 31 signal connection. Specifically, for example, the band-type brake power supply board 32 and the electronic safety board 31 may be connected by a signal line, and the electronic safety board 31 may directly send a high-level signal or a low-level signal to the band-type brake power supply board 32 through the signal line. The band-type brake power supply board 32 and the electronic safety board 31 may be connected by a CAN bus, a differential signal line, or the like. Those skilled in the art will appreciate that other wired or wireless signal connections are possible.
The electronic Safety board 31 is integrated with Programmable electronic devices, that is, the electronic Safety board 31 is based on PESSRAL (Programmable Electric Systems in Safety Related Applications for Lifts). The electronic safety board 31 in this embodiment is connected to at least one safety switch and detects a signal state of the at least one safety switch, and when the signal state of the safety switch is abnormal, the electronic safety board 31 generates a shutdown signal and sends the shutdown signal to the band-type brake power supply board 32.
The brake power supply board 32 in this embodiment includes a rectifying unit 322, and supplies power to the brake circuit through the rectifying unit 322. Specifically, the rectifying unit 322 includes a rectifying bridge, an ac input terminal for connecting an ac power supply (for example, 220V), and a dc output terminal for connecting a brake braking circuit (in the brake braking circuit, the brake coil 33 is connected to the dc output terminal of the rectifying unit 322 via the brake contactor switch K32 and the operating contactor switch K31 in turn), and the rectifying unit 322 provides a dc power (70-110V) to the brake braking circuit via the dc output terminal.
When the brake power supply board receives the stop signal from the electronic safety board 31, the rectifier unit 322 is controlled to stop supplying power to the brake circuit, so that the brake circuit loses the power supply voltage (at this time, the brake contactor switch K32 and the operating contactor switch K31 are not disconnected), the brake coil 33 releases the brake, and the elevator stops operating. When the contracting brake contactor switch K32 and the operating contactor switch K31 are disconnected (when any safety switch is disconnected, the contracting brake contactor switch K32 and the operating contactor switch K31 are both disconnected), because the contracting brake braking loop is powered off, arc discharge cannot be generated at the contracting brake contactor switch K32 or the operating contactor switch K31.
Above-mentioned elevator system of shutting down fast acquires the safety switch state through electron safety board 31 to by band-type brake power strip 32 cut off band-type brake braking circuit's power supply when the safety switch state is unusual, not only can shut down fast, the arc problem of drawing that the disconnection of band-type brake braking circuit leads to when having avoided unusual shut down moreover has avoided the safety risk that the arc produced, has improved the life of device.
As shown in fig. 6, in another embodiment of the present invention, the electronic security board 31 includes a first logic processing unit 311, a signal output terminal, and at least one detection terminal connected to the security switch (including the sensor), and the first logic processing unit 311 is connected to each detection terminal respectively to obtain the status of each security switch. The first Logic processing Unit 311 may be a Micro Controller Unit (MCU) or a Programmable Logic Controller (PLC), and is connected to the signal output terminal and the detection terminal through a plurality of pins. The first logic processing unit 311 may obtain the state of each safety switch through each detection terminal, and specifically, when a signal of any detection terminal is abnormal (for example, the safety switch is turned off), the first logic processing unit 311 outputs a shutdown signal through the signal output terminal.
The band-type brake power supply board 32 includes a second logic processing unit 321 and a signal input terminal in addition to the rectifying unit 322, and the band-type brake power supply board 32 is connected with the signal output terminal of the electronic safety board 31 through the signal input terminal. The second logic processing unit 321 may be a micro control unit or the like, which is respectively connected to the rectifying unit 322 and the signal input terminal, and the second logic processing unit 321 controls the rectifying unit 322 to stop supplying power and outputting power after the signal input terminal receives the shutdown signal.
Fig. 7 is a schematic view of an elevator rapid shutdown system according to another embodiment of the present invention. Unlike the embodiment shown in fig. 5, the elevator rapid-stopping system in this embodiment includes a main control board 44 in addition to an electronic safety board 41 and a band-type brake power supply board 42. Specifically, the main control panel 44 may be constituted by a control panel for controlling the operation of the elevator in the elevator control system.
In this embodiment, the electronic safety board 41 may send a status signal including the status of each safety switch to the main control board 44 (e.g., according to a preset cycle), so that the main control board 44 may know the status of the electronic safety board 41 (including the status of each safety switch) in real time. When the state signal from the electronic safety board 41 does not meet the preset condition (for example, the safety switch connected to the electronic safety board 41 is abnormal), the main control board 44 sends a control instruction to the second logic processing unit of the band-type brake power supply board 42, where the control instruction is used for enabling the second logic processing unit to control the rectifying unit to stop supplying power and outputting power. The electronic safety board 41 and the main control board 44, and the main control board 44 and the band-type brake power supply board 42 can respectively adopt serial communication buses for information interaction.
In the present embodiment, the brake power supply board 42 can cut off power supply to the brake circuit of the brake based on either one of the stop signal from the electronic safety board 41 and the control command from the main control board 44 to brake the elevator, thereby improving safety.
The band-type brake braking loop comprises a band-type brake contactor switch K42, an operation contactor switch K41 and a band-type brake coil 43, and the band-type brake coil 43 is connected with the direct current output end of the rectifying unit of the band-type brake power supply board 42 through the operation contactor switch K41 and the band-type brake contactor switch K42. The elevator rapid stopping system also comprises a switch control loop, wherein the switch control loop comprises a first branch, a second branch and a safety relay K43, the first branch and the second branch are connected between the high-voltage sampling point A and a reference ground in parallel, and the safety relay K43 is connected between a power supply and the high-voltage sampling point A; the first branch circuit comprises a first switch Y41 and a band-type brake contactor coil S42 which are connected in series and used for conducting on-off control on a band-type brake contactor switch K42, and the second branch circuit comprises a second switch Y42 and a running contactor coil S41 which is connected in series and used for conducting on-off control on a running contactor switch K41.
The first switch Y41 and the second switch Y42 may specifically adopt a contactor, a thyristor or other semiconductor switching elements, and control ends of the first switch Y41 and the second switch Y42 are connected to the main control board 44, that is, the on/off is controlled by the main control board 44. And the control terminal of the safety relay K43 is connected to the first logic processing unit of the electronic safety board 41, that is, the safety relay K43 is switched on and off by the first logic processing unit. When the state signal from the electronic safety board 41 does not meet the preset condition, the main control board 44 sends a control instruction to the internal contracting brake power panel 42, and controls the first switch Y41 and the second switch Y42 to be switched off; when a signal of any detection terminal is abnormal, the first logic processing unit of the electronic safety board 41 controls the safety relay K43 to be switched off, and the brake contactor coil S42 and the operation contactor coil S41 are powered off, so that the brake contactor switch K42 and the operation contactor switch K41 are switched off, and the brake coil 43 is powered off, so that an elevator brake device brakes.
In addition, the main control board 44 may further include a voltage detection unit, and is connected to the high voltage sampling point a of the switching control loop through the voltage detection unit, so that the main control board 44 may detect the voltage of the high voltage sampling point a. Correspondingly, when the main control board 44 detects that the voltage of the high-voltage sampling point a is lower than the preset voltage, the first switch Y41 and the second switch Y42 are controlled to be turned off, and meanwhile, a control instruction is sent to the second logic processing unit of the band-type brake power panel 42, so that the second logic processing unit controls the rectifying unit to stop power supply output. Because the contracting brake contactor switch K42 and the operating contactor switch K41 are slow in execution time, a control command is firstly given to the contracting brake power panel 42, and the contracting brake power panel stops outputting the direct-current contracting brake power. Therefore, when the machine is abnormally stopped, high-voltage direct current does not exist in a loop of the internal contracting brake before the operation contactor switch K41 and the internal contracting brake contactor switch K42 are disconnected, so that arc discharge cannot be generated, and the problem of arc discharge is solved.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (7)
1. A rapid elevator stopping system is characterized by comprising a band-type brake power supply board and an electronic safety board, wherein the band-type brake power supply board is in signal connection with the electronic safety board;
the electronic safety board is connected with at least one safety switch and detects the signal state of the connected safety switch, and when the signal state of the safety switch is abnormal, the electronic safety board generates a shutdown signal and sends the shutdown signal to the band-type brake power panel;
the band-type brake power panel comprises a rectifying unit for supplying power to a band-type brake loop; and the contracting brake power panel controls the rectifying unit to stop supplying power to the contracting brake braking loop when receiving a stop signal from the electronic safety panel.
2. The elevator rapid shutdown system of claim 1, characterized in that:
the electronic safety board comprises a first logic processing unit, a signal output terminal and at least one detection terminal connected to a safety switch, wherein the first logic processing unit is respectively connected with the signal output terminal and each detection terminal, and the first logic processing unit outputs a shutdown signal through the signal output terminal when the signal of any detection terminal is abnormal;
the band-type brake power supply board comprises a second logic processing unit and a signal input terminal, and supplies power to a band-type brake circuit through a rectifying unit; the signal input terminal of band-type brake power strip is connected to the signal output terminal of electron safety plate, the second logic processing unit with signal input terminal connects, and the second logic processing unit is in when signal input terminal receives shutdown signal control the rectifier unit stops the power supply output.
3. The elevator rapid shutdown system of claim 2, further comprising a main control board, wherein the main control board is in signal connection with the electronic safety board and the band-type brake power board, the main control board receives a status signal from the electronic safety board, and when the status signal does not meet a preset condition, the main control board sends a signal to the band-type brake power board to control the rectifying unit to stop supplying power to the band-type brake braking loop.
4. The elevator rapid shutdown system of claim 3, wherein the brake braking loop comprises a brake contactor switch, a running contactor switch, and a brake coil, and the brake coil is connected with the dc output of the rectifying unit of the brake power strip via the running contactor switch and the brake contactor switch.
5. The elevator rapid shutdown system of claim 4, comprising a switch control loop, the switch control loop comprising a first branch, a second branch and a safety relay, the first branch and the second branch being connected in parallel between the high voltage sampling point and the reference ground, the safety relay being connected between the power supply and the high voltage sampling point; the first branch comprises a first switch and a band-type brake contactor coil, the first switch and the band-type brake contactor coil are connected in series, the band-type brake contactor coil is used for controlling the on-off of the band-type brake contactor switch, and the second branch comprises a second switch and an operation contactor coil, the second switch and the operation contactor coil are connected in series, and the operation contactor coil is used for controlling the on-off of the operation contactor switch;
the main control board is respectively connected with the control ends of the first switch and the second switch, and controls the first switch and the second switch to be switched off when the state signal does not accord with a preset condition; and the first logic processing unit controls the safety relay to be switched off when the signal of any detection terminal is abnormal.
6. The elevator rapid shutdown system of claim 5, wherein the main control board comprises a voltage detection unit, the main control board is connected with a high voltage sampling point of the switch control loop through the voltage detection unit, and controls the first switch and the second switch to be switched off when the voltage of the high voltage sampling point is lower than a preset voltage, and simultaneously sends a control instruction to the second logic processing unit, so that the second logic processing unit controls the rectification unit to stop power supply output.
7. The elevator rapid shutdown system of claim 2, wherein the signal input terminal of the band-type brake power supply board is connected with the signal output terminal of the electronic safety board through a signal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020449963.0U CN212374647U (en) | 2020-03-31 | 2020-03-31 | Elevator rapid stopping system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020449963.0U CN212374647U (en) | 2020-03-31 | 2020-03-31 | Elevator rapid stopping system |
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| CN212374647U true CN212374647U (en) | 2021-01-19 |
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| CN202020449963.0U Active CN212374647U (en) | 2020-03-31 | 2020-03-31 | Elevator rapid stopping system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114275640A (en) * | 2021-12-30 | 2022-04-05 | 苏州汇川控制技术有限公司 | Elevator controller and elevator |
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2020
- 2020-03-31 CN CN202020449963.0U patent/CN212374647U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114275640A (en) * | 2021-12-30 | 2022-04-05 | 苏州汇川控制技术有限公司 | Elevator controller and elevator |
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| TR01 | Transfer of patent right |
Effective date of registration: 20211015 Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Huichuan Control Technology Co.,Ltd. Address before: No.16, Youxiang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU INOVANCE TECHNOLOGY Co.,Ltd. |
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