CN223928126U - Dual-power automatic switching device of comprehensive protection device of belt conveyor - Google Patents

Dual-power automatic switching device of comprehensive protection device of belt conveyor

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Publication number
CN223928126U
CN223928126U CN202520482249.4U CN202520482249U CN223928126U CN 223928126 U CN223928126 U CN 223928126U CN 202520482249 U CN202520482249 U CN 202520482249U CN 223928126 U CN223928126 U CN 223928126U
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China
Prior art keywords
power supply
contactor
main
supply unit
main power
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CN202520482249.4U
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Chinese (zh)
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闫敬旺
杨帆
李子耀
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Shaanxi Coal Industry Group Shenmu Ningtiaota Mining Co ltd
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Shaanxi Coal Industry Group Shenmu Ningtiaota Mining Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

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  • Control Of Conveyors (AREA)

Abstract

本实用新型涉及煤矿井下供电设备技术领域，尤其涉及一种带式输送机综合保护装置双电源自动切换装置，包括有主电源器、备用电源器、切换组件和负载供电接口，主电源器一侧设置有切换组件，主电源器的一侧设置有负载供电接口，负载供电接口设置有两组，两组负载供电结构分别位于主电源器的两侧，主电源器的输入端依次设置有第一隔离开关和第一熔断器，备用电源器的输入端依次设置有第二隔离开关和第二熔断器，主电源器与备用电源器的输出端并联后通过切换组件连接至负载供电接口，切换组件包括互锁控制电路，用于在主电源器断电时自动切换至备用电源器；本实用新型通过主备电源并联互锁实现带式输送机控制电源的零中断供电，显著提升设备可靠性。

This utility model relates to the technical field of underground power supply equipment in coal mines, and in particular to a dual-power automatic switching device for a belt conveyor integrated protection device. It includes a main power supply unit, a backup power supply unit, a switching component, and a load power supply interface. The switching component is located on one side of the main power supply unit, and the load power supply interface is located on the other side of the main power supply unit. Two sets of load power supply interfaces are provided, with the two sets of load power supply structures located on opposite sides of the main power supply unit. A first isolating switch and a first fuse are sequentially installed at the input end of the main power supply unit, and a second isolating switch and a second fuse are sequentially installed at the input end of the backup power supply unit. The output ends of the main power supply unit and the backup power supply unit are connected in parallel and then connected to the load power supply interface through the switching component. The switching component includes an interlocking control circuit for automatically switching to the backup power supply unit when the main power supply unit fails. This utility model achieves zero-interruption power supply for the belt conveyor control power supply through parallel interlocking of the main and backup power supplies, significantly improving equipment reliability.

Description

Dual-power automatic switching device of comprehensive protection device of belt conveyor
Technical Field
The utility model relates to the technical field of underground power supply equipment of coal mines, in particular to a dual-power automatic switching device of a comprehensive protection device of a belt conveyor.
Background
In a belt conveyor control system, a traditional power supply mode of a protector and a PLC (programmable logic controller) console generally adopts a single-path 127V comprehensive protection power supply, however, once the control power supply is powered off due to phase failure, fuse blowing or line fault, the PLC console is immediately stopped, a standby power supply is required to be manually checked and switched, the production efficiency is severely restricted, the single-power supply does not have an automatic switching mechanism, the ageing of a contactor is easily aggravated in a complex underground environment, and the fault risk is further increased;
Therefore, aiming at the problems, the dual-power automatic switching device of the comprehensive protection device of the belt conveyor is provided, zero interruption power supply of the control power supply of the belt conveyor is realized through parallel connection and interlocking of main power supply and standby power supply, and the reliability of equipment is remarkably improved.
Disclosure of utility model
In order to solve the problems of easy failure and shutdown, long switching delay and insufficient safety of single power supply in the process of working of a power supply device of a comprehensive protection device of a conventional belt conveyor in daily use.
The technical scheme includes that the dual-power automatic switching device of the comprehensive protection device of the belt conveyor comprises a main power supply device, a standby power supply device, a switching assembly and a load power supply interface, wherein the switching assembly is arranged on one side of the main power supply device, the load power supply interface is arranged on one side of the main power supply device, two groups of load power supply interfaces are arranged, two groups of load power supply structures are respectively positioned on two sides of the main power supply device, a first isolating switch and a first fuse are sequentially arranged at the input end of the main power supply device, a second isolating switch and a second fuse are sequentially arranged at the input end of the standby power supply device, the main power supply device and the output end of the standby power supply device are connected in parallel and then connected to the load power supply interface through the switching assembly, and the switching assembly comprises an interlocking control circuit used for automatically switching to the standby power supply device when the main power supply device is powered off.
Preferably, through the mechanical interlocking structure of the first contactor and the second contactor, when the main power supply fails, the normally closed auxiliary contact is closed due to the fact that the first contactor coil is in power failure, the second contactor coil is powered on instantaneously, the electric overvoltage comparator monitors the voltage of the main power supply in real time, the abnormal signal triggers the logic controller to synchronously output a switching command, the interruption of a PLC control signal is avoided, so that no voltage drop in the switching process is realized, the power supply of the protector and the PLC controller is not affected, the belt conveyor can continuously operate, continuous operation is ensured through seamless switching, the normally closed auxiliary contact of the first contactor in the interlocking control circuit is connected to the coil loop of the second contactor in series, the normally closed auxiliary contact of the second contactor is connected to the coil loop of the first contactor in series, when the main power supply works, the normally closed contact of the first contactor is disconnected, the standby power supply loop is physically isolated, and after the switching to the standby power supply, the normally closed contact of the second contactor is synchronously disconnected, the main power supply loop is blocked, so that the interlocking protection is realized, and the problem of short circuit and countercurrent caused by double power supply parallel connection is avoided.
Preferably, the switching assembly further comprises a first contactor and a second contactor, wherein the main contact of the first contactor is connected in series in the output circuit of the main power supply, the normally closed auxiliary contact of the first contactor is connected in series with the coil loop of the second contactor, the main contact of the second contactor is connected in series in the output circuit of the standby power supply, and the normally closed auxiliary contact of the second contactor is connected in series with the coil loop of the first contactor to form a mechanical interlocking structure.
Preferably, in the output line of the main power supply, the main contact of the first contactor and the main contact of the second contactor are alternately connected in series in sequence to form three-level redundancy control, and in the output line of the standby power supply, the main contact of the second contactor and the main contact of the first contactor are alternately connected in series in sequence to form symmetrical redundancy control.
Preferably, the power supply lines of the main power supply device and the standby power supply device are respectively provided with a voltage sensor connected with the phase line, and the voltage sensors are used for monitoring the phase state of the power supply in real time and triggering the switching component to execute switching action when the phase failure fault is detected.
Preferably, in the interlock control circuit, the normally closed auxiliary contact of the first contactor is connected with the output end of the standby power supply and is connected in series to the coil loop of the second contactor, and the normally closed auxiliary contact of the second contactor is connected with the output end of the main power supply and is connected in series to the coil loop of the first contactor to form the cross interlock logic.
Preferably, the side part of the load power supply interface is provided with a control component, the control component comprises a voltage comparator and a logic controller, the side part of the load power supply interface is provided with the voltage comparator, one side of the voltage comparator is provided with the logic controller, the voltage comparator is used for collecting voltage signals of the main power supply and the standby power supply in real time, and when the voltage of the main power supply is lower than a threshold value, the logic controller drives the switching component to switch to the standby power supply.
Preferably, the main power supply device and the standby power supply device are independently arranged 127V comprehensive protection power supplies, the output ends of the main power supply device and the standby power supply device are connected with the control end of the protector of the external belt conveyor and the power input end of the PLC console through cables, and a distribution box is arranged outside the main power supply device.
The utility model has the beneficial effects that:
1. Through the mechanical interlocking structure of the first contactor and the second contactor, when a main power supply fails, the normally closed auxiliary contact is closed due to the fact that the first contactor coil is in power failure, the second contactor coil is powered on instantaneously, the electric overvoltage comparator monitors the main power supply voltage in real time, the logic controller is triggered by abnormal signals to synchronously output a switching instruction, and the interruption of a PLC control signal is avoided, so that no voltage drop in the switching process is realized, the power supply of the protector and the PLC controller is not affected, the belt conveyor can run continuously, and continuous running of equipment is guaranteed through seamless switching;
2. The normally-closed auxiliary contact of the first contactor is connected in series to the second contactor coil loop, the normally-closed auxiliary contact of the second contactor is connected in series to the first contactor coil loop, when the main power supply works, the normally-closed contact of the first contactor is disconnected, the standby power supply loop is physically isolated, and after the standby power supply is switched, the normally-closed contact of the second contactor is synchronously disconnected, the main power supply loop is blocked, so that the interlocking protection is realized, and the problems of short circuit and countercurrent caused by parallel connection of the double power supplies are avoided.
Drawings
FIG. 1 shows a schematic perspective view of a dual-power automatic switching device of a comprehensive protection device of a belt conveyor according to the present utility model;
FIG. 2 shows a schematic view of a first partial construction of a dual-power automatic switching device of a belt conveyor comprehensive protection device according to the present utility model;
FIG. 3 shows a second schematic configuration of the dual power automatic switching device of the comprehensive protection device of the belt conveyor of the present utility model;
FIG. 4 shows a schematic diagram of an interlock control circuit of a dual-power automatic switching device of a comprehensive protection device of a belt conveyor according to the present utility model;
The reference numerals indicate 1, a main power supply, 2, a standby power supply, 3, a load power supply interface, 4, a voltage sensor, 101, a first contactor, 102, a second contactor, 103, an interlocking control circuit, 201, a first disconnecting switch, 202, a first fuse, 203, a second disconnecting switch, 204, a second fuse, 401, a voltage comparator, 402, a logic controller, 5 and a distribution box.
Detailed Description
The utility model is further described below with reference to the drawings and examples.
Referring to fig. 1 and 2, the utility model provides an embodiment of a dual-power automatic switching device of a comprehensive protection device of a belt conveyor, which comprises a main power supply device 1, a standby power supply device 2, a switching component and a load power supply interface 3, wherein the switching component is arranged on one side of the main power supply device 1, the load power supply interface 3 is arranged on one side of the main power supply device 1, the load power supply interfaces 3 are provided with two groups, two groups of load power supply structures are respectively positioned on two sides of the main power supply device 1, a first isolating switch 201 and a first fuse 202 are sequentially arranged at an input end of the main power supply device 1, a second isolating switch 203 and a second fuse 204 are sequentially arranged at an input end of the standby power supply device 2, the main power supply device 1 and an output end of the standby power supply device 2 are connected in parallel and then connected to the load power supply interface 3 through the switching component, and the switching component comprises an interlocking control circuit 103 for automatically switching to the standby power supply device 2 when the main power supply device 1 is powered off.
Referring to fig. 3 and 4, in this embodiment, the switching assembly further includes a first contactor 101 and a second contactor 102, the main contact of the first contactor 101 is connected in series in the output line of the main power supply 1, the normally closed auxiliary contact of the first contactor 101 is connected in series with the coil loop of the second contactor 102, the main contact of the second contactor 102 is connected in series in the output line of the standby power supply 2, the normally closed auxiliary contact of the second contactor 102 is connected in series with the coil loop of the first contactor 101 to form a mechanical interlocking structure, the main contact of the first contactor 101 and the main contact of the second contactor 102 are sequentially connected in series alternately in the output line of the main power supply 1 to form a three-stage redundancy control, the main contact of the second contactor 102 and the main contact of the first contactor 101 are sequentially connected in series alternately in series in the output line of the standby power supply 2 to form a symmetrical redundancy control, the power supply circuits of the main power supply device 1 and the standby power supply device 2 are respectively provided with a voltage sensor 4 connected with a phase line, the voltage sensors 4 are used for monitoring the phase state of a power supply in real time and triggering a switching component to execute switching action when a phase failure fault is detected, when the power supply device is used, a normally closed auxiliary contact is closed due to the fact that a first contactor 101 and a second contactor 102 are in a mechanical interlocking structure, when the main power supply fails, a coil of the first contactor 101 is powered off, a coil of the second contactor 102 is powered on instantaneously, an electric overvoltage comparator monitors the voltage of the main power supply in real time, an abnormal signal triggers a logic controller 402 to synchronously output a switching instruction, and the interruption of a PLC control signal is avoided, so that no voltage drop in the switching process is realized, the power supply of the protector and the PLC controller is not influenced, the belt conveyor can continuously operate, and continuous operation of equipment is guaranteed through seamless switching.
Preferably, in the interlock control circuit 103, the normally closed auxiliary contact of the first contactor 101 is connected with the output end of the standby power supply 2 and is connected in series to the coil loop of the second contactor 102, the normally closed auxiliary contact of the second contactor 102 is connected with the output end of the main power supply 1 and is connected in series to the coil loop of the first contactor 101 to form cross interlock logic, a control component is arranged on the side part of the load power supply interface 3 and comprises a voltage comparator 401 and a logic controller 402, the voltage comparator 401 is arranged on the side part of the load power supply interface 3, one side of the voltage comparator 401 is provided with a logic controller 402, the voltage comparator 401 is used for acquiring voltage signals of the main power supply 1 and the standby power supply 2 in real time, and when the voltage of the main power supply 1 is lower than a threshold value, the switching component is driven by the logic controller 402 to switch to the standby power supply 2, the main power supply 1 and the standby power supply 2 are independently arranged 127V comprehensive protection power supplies, the output ends of the main power supply 1 and the standby power supply 2 are used for being connected with the protector control end of the external belt conveyor and the power supply input end of the PLC console through a cable, the normally closed circuit is arranged on the side of the main power supply 1 and the power supply controller 103, and the normally closed circuit is connected to the first contactor 101 through the normally closed circuit 101 when the first contactor is arranged in the first contactor, and the normally closed circuit is connected in series to the first contactor 101, and the normally closed circuit is connected in series to the second contactor 101, when the first contactor is connected to the first auxiliary contact is connected in series to the first contactor, and the first contactor 101; after switching to the standby power supply, the normally closed contact of the second contactor 102 is synchronously disconnected to block the main power supply loop, so that interlocking protection is realized, and the problems of short circuit and countercurrent caused by parallel connection of the dual power supplies are avoided.
When the power supply device works, firstly, the first isolating switch 201 at the input side of the main power supply device 1 and the second isolating switch 203 at the input side of the standby power supply device 2 are closed, so that the main power supply and the standby power supply are in a standby state, the first fuse 202 of the main power supply device 1 and the second fuse 204 of the standby power supply device 2 are closed, the normal protection function of a power supply line is ensured, then the main power supply device 1 is started, at the moment, the coil of the first contactor 101 is electrified, the normally open main contact is closed, and the main power supply supplies power to a load through the main contact of the first contactor 101;
When the main power supply works normally, 127V control power is continuously output through the main power supply device 1, power is supplied to a protector of the belt conveyor and a PLC (programmable logic controller) control console through the load power supply interface 3, a voltage comparator 401 monitors a voltage signal of the main power supply device 1 in real time, if the voltage is stable within a threshold range, a current power supply state is maintained, a voltage sensor 4 continuously detects a phase state of the main power supply, and if the power supply phases are balanced, no action is triggered;
When the main power supply is out of phase, voltage suddenly drops or the fuse is blown, the output voltage of the main power supply 1 drops below a threshold value, the voltage comparator 401 detects an abnormal signal, and the logic controller 402 outputs a switching instruction; the normally closed auxiliary contact of the first contactor 101 is reset and closed to provide a passage for switching the standby power supply 2, after the normally closed auxiliary contact of the first contactor 101 is closed, the coil of the second contactor 102 of the standby power supply 2 is electrified, the normally open main contact of the standby power supply 2 is instantaneously closed, the main contact of the second contactor 102 supplies power to a load, the normally closed auxiliary contact of the second contactor 102 is synchronously opened, the loop of the coil of the first contactor 101 of the main power supply 1 is cut off, the interlocking of the main power supply and the standby power supply is ensured, the parallel collision of the double power supplies is avoided, the voltage of a load power supply interface 3 is maintained by the standby power supply 2, the protector and a PLC (programmable logic controller) control console continuously run, and the belt conveyor has no shutdown phenomenon;
After the fault of the main power supply is removed, the worker can open the second isolating switch 203 of the standby power supply 2 to make the coil of the second contactor 102 lose power, the main contact of the second contactor 102 opens the output of the standby power supply, the first isolating switch 201 and the first fuse 202 of the main power supply 1 are closed again, the coil of the first contactor 101 is powered on, the main contact is closed, the power supply of the main power supply is recovered, and the device returns to the initial working state.
Through the steps, by utilizing the mechanical interlocking structure of the first contactor 101 and the second contactor 102, when a main power supply fails, the normally closed auxiliary contact is closed due to the fact that the coil of the first contactor 101 is in power failure, the coil of the second contactor 102 is instantly electrified, the voltage of the main power supply is monitored in real time by utilizing the voltage comparator, the abnormal signal triggers the logic controller 402 to synchronously output a switching instruction, the interruption of a PLC control signal is avoided, no voltage drop in the switching process is realized, the power supply of the protector and the PLC controller is not influenced, the belt conveyor can continuously operate, and the continuous operation of equipment is ensured by utilizing seamless switching.
The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims (7)

1.一种带式输送机综合保护装置双电源自动切换装置，包括有主电源器（1）和备用电源器（2），其特征在于：还包括有切换组件和负载供电接口（3），主电源器（1）一侧设置有切换组件，主电源器（1）的一侧设置有负载供电接口（3），负载供电接口（3）设置有两组，两组负载供电结构分别位于主电源器（1）的两侧，主电源器（1）的输入端依次设置有第一隔离开关（201）和第一熔断器（202），备用电源器（2）的输入端依次设置有第二隔离开关（203）和第二熔断器（204），主电源器（1）与备用电源器（2）的输出端并联后通过切换组件连接至负载供电接口（3），切换组件包括有互锁控制电路（103），用于在主电源器（1）断电时自动切换至备用电源器（2）。1. A dual-power automatic switching device for a belt conveyor integrated protection device, comprising a main power supply unit (1) and a backup power supply unit (2), characterized in that: it further comprises a switching component and a load power supply interface (3), a switching component is provided on one side of the main power supply unit (1), a load power supply interface (3) is provided on one side of the main power supply unit (1), the load power supply interface (3) is provided in two sets, the two sets of load power supply structures are respectively located on both sides of the main power supply unit (1), a first isolating switch (201) and a first fuse (202) are sequentially provided at the input end of the main power supply unit (1), a second isolating switch (203) and a second fuse (204) are sequentially provided at the input end of the backup power supply unit (2), the output ends of the main power supply unit (1) and the backup power supply unit (2) are connected in parallel and then connected to the load power supply interface (3) through the switching component, the switching component includes an interlock control circuit (103) for automatically switching to the backup power supply unit (2) when the main power supply unit (1) is de-energized. 2.根据权利要求1所述的一种带式输送机综合保护装置双电源自动切换装置，其特征在于：切换组件还包括有包括第一接触器（101）和第二接触器（102），第一接触器（101）的主触头串联于主电源器（1）的输出线路中，第一接触器（101）的常闭辅助触点与第二接触器（102）的线圈回路串联，第二接触器（102）的主触头串联于备用电源器（2）的输出线路中，第二接触器（102）的常闭辅助触点与第一接触器（101）的线圈回路串联，形成机械互锁结构。2. The dual-power automatic switching device for a belt conveyor integrated protection device according to claim 1, characterized in that: the switching component further includes a first contactor (101) and a second contactor (102), the main contact of the first contactor (101) is connected in series in the output line of the main power supply (1), the normally closed auxiliary contact of the first contactor (101) is connected in series with the coil circuit of the second contactor (102), the main contact of the second contactor (102) is connected in series in the output line of the backup power supply (2), and the normally closed auxiliary contact of the second contactor (102) is connected in series with the coil circuit of the first contactor (101), forming a mechanical interlock structure. 3.根据权利要求2所述的一种带式输送机综合保护装置双电源自动切换装置，其特征在于：主电源器（1）的输出线路中，第一接触器（101）的主触头与第二接触器（102）的主触头依次交替串联，形成三级冗余控制，备用电源器（2）的输出线路中，第二接触器（102）的主触头与第一接触器（101）的主触头依次交替串联，形成对称冗余控制。3. The dual-power automatic switching device for a belt conveyor integrated protection device according to claim 2, characterized in that: in the output line of the main power supply (1), the main contacts of the first contactor (101) and the main contacts of the second contactor (102) are connected in series alternately to form a three-level redundant control; in the output line of the backup power supply (2), the main contacts of the second contactor (102) and the main contacts of the first contactor (101) are connected in series alternately to form a symmetrical redundant control. 4.根据权利要求1所述的一种带式输送机综合保护装置双电源自动切换装置，其特征在于：主电源器（1）和备用电源器（2）的供电线路中均设置有与相线连接的电压传感器（4），电压传感器（4）用于实时监测电源的相位状态，并在检测到断相故障时触发切换组件执行切换动作。4. The dual-power automatic switching device for a belt conveyor integrated protection device according to claim 1, characterized in that: a voltage sensor (4) connected to the phase line is provided in the power supply lines of the main power supply unit (1) and the backup power supply unit (2), the voltage sensor (4) is used to monitor the phase state of the power supply in real time, and triggers the switching component to perform the switching action when a phase failure is detected. 5.根据权利要求2所述的一种带式输送机综合保护装置双电源自动切换装置，其特征在于：互锁控制电路（103）中，第一接触器（101）的常闭辅助触点与备用电源器（2）的输出端连接，并串联至第二接触器（102）的线圈回路，第二接触器（102）的常闭辅助触点与主电源器（1）的输出端连接，并串联至第一接触器（101）的线圈回路，形成交叉互锁逻辑。5. The dual-power automatic switching device for a belt conveyor integrated protection device according to claim 2, characterized in that: in the interlock control circuit (103), the normally closed auxiliary contact of the first contactor (101) is connected to the output terminal of the backup power supply (2) and connected in series to the coil circuit of the second contactor (102), and the normally closed auxiliary contact of the second contactor (102) is connected to the output terminal of the main power supply (1) and connected in series to the coil circuit of the first contactor (101) to form a cross-interlock logic. 6.根据权利要求1所述的一种带式输送机综合保护装置双电源自动切换装置，其特征在于：负载供电接口（3）的侧部设置有控制组件，控制组件包括有电压比较器（401）和逻辑控制器（402），负载供电接口（3）的侧部设置有电压比较器（401），电压比较器（401）的一侧设置有逻辑控制器（402），电压比较器（401）用于实时采集主电源器（1）和备用电源器（2）的电压信号，并在主电源器（1）电压低于阈值时，通过逻辑控制器（402）驱动切换组件切换至备用电源器（2）。6. The dual-power automatic switching device for a belt conveyor integrated protection device according to claim 1, characterized in that: a control component is provided on the side of the load power supply interface (3), the control component includes a voltage comparator (401) and a logic controller (402), a voltage comparator (401) is provided on the side of the load power supply interface (3), a logic controller (402) is provided on one side of the voltage comparator (401), the voltage comparator (401) is used to collect the voltage signals of the main power supply (1) and the backup power supply (2) in real time, and when the voltage of the main power supply (1) is lower than the threshold, the switching component is driven by the logic controller (402) to switch to the backup power supply (2). 7.根据权利要求1所述的一种带式输送机综合保护装置双电源自动切换装置，其特征在于：主电源器（1）和备用电源器（2）为独立设置的127V综合保护电源，主电源器（1）和备用电源器（2）输出端用于通过电缆与外部带式输送机的保护器控制端及PLC控制台的电源输入端连接，主电源器（1）的外部设置有配电箱（5）。7. The dual power supply automatic switching device for a belt conveyor integrated protection device according to claim 1, characterized in that: the main power supply (1) and the backup power supply (2) are independently set 127V integrated protection power supplies, the output terminals of the main power supply (1) and the backup power supply (2) are used to connect to the protection control terminal of the external belt conveyor and the power input terminal of the PLC control console through cables, and a distribution box (5) is set outside the main power supply (1).
CN202520482249.4U 2025-03-19 2025-03-19 Dual-power automatic switching device of comprehensive protection device of belt conveyor Active CN223928126U (en)

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