Spiral feeding and walking control device of coal charging car

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By designing a control device including communication expansion card and wireless communication module, the problem of long-term maintenance of coal loading vehicle inverter failure and untimely recording of operating conditions is solved, rapid fault detection and real-time monitoring are achieved, and production safety is improved Sex and efficiency.

CN222524445UActive Publication Date: 2025-02-25BENXI NORTHERN IRON IND CO LTD +1

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Patent Information

Application Number: CN202420794523.7
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-04-16
Publication Date: 2025-02-25
Estimated Expiration: 2034-04-16

AI Technical Summary

Technical Problem

The fault repair of the inverter of the coal loading truck takes a long time, and the operating status of the inverter is not recorded in time, which affects the normal use of the coal loading truck.

Method used

A control device including a control loop and a main loop is designed. The communication expansion card and digital I/O expansion module are set up in the main loop, and connected to the remote terminal through the wireless communication module to realize real-time recording and remote monitoring of the operating status of the inverter.

Benefits of technology

It realizes rapid detection and maintenance of inverter failures, reduces maintenance time, ensures the normal operation of the coal loading truck, and improves production safety and efficiency through real-time recording and remote monitoring.

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Abstract

The utility model relates to a coal charging car spiral feeding and walking control device which comprises a control loop and a main loop, the main loop comprises a frequency converter, the frequency converter is provided with a communication expansion card, a first digital quantity I / O expansion module and a second digital quantity I / O expansion module, and the motor output end of the frequency converter is respectively connected with a second motor and a first motor. The power input end of the frequency converter is connected with an AC power supply. The main loop is connected with the control loop. The utility model has the advantages that the output ends of the frequency converters are respectively connected with the walking motor and the screw feeder, and the rest two frequency converters are used for standby application, so that the maintenance time is saved, the maintenance time is short, and the smooth production is ensured; the first communication module is connected with the communication expansion card through a port, the CPU module is connected with the remote terminal through the wireless communication module through a port, an operator can observe the operation condition of the frequency converter at any time through a mobile phone or a PC, if equipment fails, the mobile phone or the PC gives an alarm, and production safety of an enterprise is guaranteed.

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Description

Technical Field

[0001] The utility model relates to a spiral feeding and traveling control device for a coal charging vehicle. Background Art

[0002] The coal loading car is one of the main equipment of the coke oven. The spiral feeding motor and the traveling motor for coal loading are driven by corresponding frequency converters respectively. A coal loading car is equipped with four spiral feeding frequency converters and two traveling frequency converters. When a frequency converter fails, the coal loading car cannot be used, affecting normal production. The coal loading car is located on the furnace top, and the operating status of the frequency converter is usually recorded manually, which is untimely and procrastinating. In addition, the time-consuming maintenance of the frequency converter failure will also cause the coal loading car to be unable to be restored to use in time. Therefore, improvement is urgently needed. Summary of the invention

[0003] The utility model aims to provide a spiral feeding and traveling control device for a coal loading car, which has short maintenance time and can record the running status of the frequency converter in real time without manual recording.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A control device for spiral feeding and traveling of a coal loading car comprises a control circuit and a main circuit. The main circuit comprises a frequency converter. The frequency converter is provided with a communication expansion card, a digital quantity I / O expansion module 1, and a digital quantity I / O expansion module 2. The motor output end of the frequency converter is respectively connected to the motor 2 and the motor 1, the power input end of the frequency converter is connected to an AC power supply, and the main circuit is connected to the control circuit.

[0006] The main circuit also includes contactor KM1 and contactor KM2. Motor 2 is connected to the motor output terminal of the inverter through the main contact of contactor KM1, and motor 1 is connected to the motor output terminal of the inverter through the main contact of contactor KM2.

[0007] The control circuit includes frequency conversion branch 1, frequency conversion branch 2, frequency conversion branch 3, frequency conversion branch 4, and a control unit. Frequency conversion branch 1, frequency conversion branch 2, frequency conversion branch 3, and frequency conversion branch 4 are all connected to the control unit. Frequency conversion branch 1 includes a normally open contact of relay KA2 and a normally open contact of relay KA7 connected to digital quantity I / O expansion module 1. Frequency conversion branch 2 includes a normally open contact of relay KA3, a normally open contact of relay KA4, and a normally open contact 2 of relay KA1 connected to digital quantity I / O expansion module 2. The normally open contact 2 of relay KA1 is connected in series with the normally open contact 2 of contactor KM2.

[0008] Frequency conversion branch three includes normally open contact four of relay KA1 connected to the digital input port of the frequency converter, normally open contact two of relay KA8, normally open contact two of relay KA5, and normally open contact two of relay KA6. Frequency conversion branch four includes the coil of relay K1 and the coil of relay K2 connected to the digital output port of the frequency converter.

[0009] The control unit comprises a CPU module, a communication module 1 and a wireless communication module. The communication module 1 is connected to the communication expansion card through a port, and the CPU module is connected to the remote terminal through a port through the wireless communication module.

[0010] The control circuit also includes a motor 2 control circuit and a motor 1 control circuit connected in parallel, and the input end of the motor 2 control circuit is connected to the working power supply;

[0011] The control circuit of motor 2 includes branches a, b, c, d and e connected in parallel. Branch a includes the normally open contact of the switching switch SA4 and the coil of the relay KA7 connected in series. Branch b includes the normally open contact 1 of the switching switch SA2 and the coil of the relay KA3 connected in series. Branch c includes the normally open contact 2 of the switching switch SA2 and the coil of the relay KA4 connected in series. Branch d includes the normally open contact 2 of the switching switch SA1 and branch e connected in series. The coil of the relay KA2 is connected in parallel with branch e. Branch e includes the normally closed contact of the relay K2, the normally closed auxiliary contact of the contactor KM1 and the coil of the contactor KM2 connected in series.

[0012] The motor control circuit includes a branch j, a branch m, a branch f, a branch g, and a branch h connected in parallel;

[0013] Branch j includes the normally open contact 1 of the transfer switch SA1 and the coil of the relay KA1 connected in series; branch f includes the normally open contact of the transfer switch SA5 and the coil of the relay KA8 connected in series; branch g includes the normally open contact 1 of the transfer switch SA3 and the coil of the relay KA5 connected in series; branch h includes the normally open contact 2 of the transfer switch SA3 and the coil of the relay KA6 connected in series;

[0014] Branch m includes the normally open contact three of the switching switch SA1, the normally closed contact of the relay K2, the normally closed auxiliary contact of the contactor KM2, and the coil of the contactor KM1 connected in series. One end of the branch m is connected to one end of the branch k, the other end of the normally closed auxiliary contact of the contactor KM2 is connected to the other end of the branch k, and the other end of the normally closed auxiliary contact of the contactor KM2 is also connected to the coil of the contactor KM1. Branch k includes the normally closed contact of the relay KA2 and the normally open contact three of the relay KA1 connected in series. The normally open contact of the contactor KM1 is connected in parallel with the normally open contact three of the relay KA1.

[0015] The wireless communication module is any one of a 5G communication module, a 4G communication module, a Bluetooth module, a WiFi module, a GSM module, a CDMA module, a CDMA module, a WCDMA module, a TD-SCDMA module, a Zigbee module and a LoRa module, or a combination of any of them.

[0016] The remote terminal is used to obtain data information from the wireless communication module.

[0017] The control unit also includes a power module, a communication module 2, and a digital input module. The CPU module, the communication module 1, the communication module 2, and the digital input module are connected through ports. The power module is used to provide working power. The digital input module is respectively connected to the normally open auxiliary contact of the contactor KM1, the normally open auxiliary contact 1 of the contactor KM2, the normally open contact 1 of the relays KA1 to KA8, the normally open contact of the relay K1, and the normally open contact of the relay K2 through ports.

[0018] The communication module 2 is connected to the HMI human-machine interaction screen through a port.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The output end of the inverter is connected to the traveling motor and the screw feeder respectively, and the remaining two inverters are used as backup, which saves maintenance time and shortens maintenance time to ensure smooth production;

[0021] 2. The communication module is connected to the communication expansion card through the port, and the CPU module is connected to the remote terminal through the wireless communication module. The operator can observe the operation status of the inverter at any time through the mobile phone or PC. If the equipment fails, the mobile phone or PC will alarm to ensure the safety of enterprise production;

[0022] 3. Communication module 2 is connected to the HMI human-machine interaction screen through a port. The data information of the inverter can be viewed at any time through the HMI human-machine interaction screen, which is convenient for maintenance and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the spiral feeding and travel control device of the coal loading car. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with the accompanying drawings of the specification, but it should be noted that the implementation of the present invention is not limited to the following embodiments.

[0025] The following examples are implemented based on the technical solution of the utility model, and provide detailed implementation methods and specific operation processes, but the protection scope of the utility model is not limited to the following examples. The methods used in the following examples are conventional methods unless otherwise specified.

[0026] [Example 1]

[0027] There are six frequency converters in the control box of the coal loading car. Before the transformation, the six frequency converters were used to drive the corresponding screw feeding motor and the traveling motor. Figure 1 , connect the two traveling motors to the spiral feeder inverter respectively, and use the original two traveling inverters as backup to save maintenance time. Figure 1 A control device for spiral feeding and traveling of a coal loading car comprises a control circuit and a main circuit. The main circuit comprises a contactor KM1, a contactor KM2 and a frequency converter. The spiral feeding motor is connected to the motor output terminal of the frequency converter through the main contact of the contactor KM1, and the traveling motor is connected to the motor output terminal of the frequency converter through the main contact of the contactor KM2. The frequency converter is provided with a communication expansion card, a digital quantity I / O expansion module 1 and a digital quantity I / O expansion module 2. The motor output terminal of the frequency converter is respectively connected to the spiral feeding motor and the traveling motor, and the power input terminal of the frequency converter is connected to an AC power supply of AC380V.

[0028] The control circuit includes frequency conversion branch 1, frequency conversion branch 2, frequency conversion branch 3, frequency conversion branch 4, control unit, spiral feeding control circuit, and running control circuit. Frequency conversion branch 1 includes the normally open contact of relay KA2 and the normally open contact of relay KA7 connected to digital I / O expansion module 1 (slot 1). Frequency conversion branch 2 includes the normally open contact of relay KA3, the normally open contact of relay KA4, and the normally open contact 2 of relay KA1 connected to digital I / O expansion module 2 (slot 2). In addition, relay KA1 The normally open contact 2 is connected in series with the normally open contact 2 of contactor KM2; the frequency conversion branch 3 includes the normally open contact 4 of relay KA1 connected to the digital input port (DI1 / DI2 / DI4 / DI5) of the frequency converter, the normally open contact 2 of relay KA8, the normally open contact 2 of relay KA5, and the normally open contact 2 of relay KA6; the frequency conversion branch 4 includes the coil of relay K1 and the coil of relay K2 connected to the digital output port (RO22 / 23 and RO31 / RO32) of the frequency converter. The spiral feeding control circuit and the travel control circuit are connected in parallel, and the input end of the spiral feeding control circuit is connected to the working power supply DC24V; the spiral feeding control circuit includes branches a, branch b, branch c, branch d, and branch e connected in parallel, branch a includes the normally open contact of the series-connected conversion switch SA4 and the coil of the relay KA7, branch b includes the normally open contact 1 of the series-connected conversion switch SA2 and the coil of the relay KA3, branch c includes the normally open contact 2 of the series-connected conversion switch SA2 and the coil of the relay KA4, branch d includes the normally open contact 2 of the series-connected conversion switch SA1 and branch e, the coil of the relay KA2 is connected in parallel, branch e includes the normally closed contact of the series-connected relay K2, the normally open auxiliary contact 2 of the contactor KM2, the normally closed auxiliary contact of the contactor KM1, and the coil of the contactor KM2, and the normally open auxiliary contact 2 of the contactor KM2 is connected in parallel with the normally open contact of the relay K37.The running control circuit includes branches j, m, f, g and h connected in parallel; branch j includes the normally open contact 1 of the series-connected conversion switch SA1 and the coil of the relay KA1; branch f includes the normally open contact of the series-connected conversion switch SA5 and the coil of the relay KA8; branch g includes the normally open contact 1 of the series-connected conversion switch SA3 and the coil of the relay KA5; branch h includes the normally open contact 2 of the series-connected conversion switch SA3 and the coil of the relay KA6; branch m includes the normally open contact 3 of the series-connected conversion switch SA1, the normally closed contact of the relay K2, the contact The normally open auxiliary contact of contactor KM1, the normally closed auxiliary contact of contactor KM2, and the coil of contactor KM1 are connected in parallel. The normally open auxiliary contact of contactor KM1 is connected in parallel with the normally open contact of relay K21. One end of branch m is connected to one end of branch k. The other end of the normally closed auxiliary contact of contactor KM2 is connected to the other end of branch k. The other end of the normally closed auxiliary contact of contactor KM2 is also connected to the coil of contactor KM1. Branch k includes the normally closed contact of relay KA2 and the normally open contact three of relay KA1 connected in series. The normally open contact of contactor KM1 is connected in parallel with the normally open contact three of relay KA1. Switches SA1 to SA5 are arranged on the operating console.

[0029] The control unit includes a CPU module, a communication module 1, a wireless communication module, a power module, a communication module 2, and a digital input module. The CPU module, the communication module 1, the communication module 2, and the digital input module are connected through ports. The communication module 2 is connected to the HMI human-machine interaction screen through a port. The power module is used to provide working power. The digital input module is respectively connected to the normally open auxiliary contact of the contactor KM1, the normally open auxiliary contact 1 of the contactor KM2, the normally open contact 1 of the relay KA1~KA8, the normally open contact of the relay K1, and the normally open contact of the relay K2 through ports; the communication module 1 is connected to the communication expansion card through a port, and the CPU module is connected to the remote terminal through a port through the wireless communication module, and the remote terminal is used to obtain data information of the wireless communication module. The wireless communication module is any one or a combination of any of the following: a 5G communication module, a 4G communication module, a Bluetooth module, a WiFi module, a GSM module, a CDMA module, a CDMA module, a WCDMA module, a TD-SCDMA module, a Zigbee module, and a LoRa module.

[0030] Working process:

[0031] Digital I / O expansion module 1 and digital I / O expansion module 2 are mainly used for electrical control of spiral feeding inverter. The control points and their functions are: DI7: inverter start / stop, DI8: motor forward / reverse, DI10: switch "travel" and "coal loading" user macros, DI11: low speed 1 and low speed 2, DI12: high speed; 2 contactors are added to the main circuit of the traveling and spiral feeding motors. When the traveling inverter drags the traveling motor, the main contact of contactor KM1 is closed and KM2 is disconnected; when the traveling inverter drags the spiral feeding motor, the main contact of contactor KM2 is closed and KM1 is disconnected. The switching operation between the spiral feeding and the traveling motor is realized by the conversion switch SA1, which is simple to operate and easy to implement; when the outer cover of the coal loading car falls, the normally open contact of the relay K37 is closed and the normally open contact of the relay K21 is disconnected, indicating that coal can be loaded. At this time, the inverter automatically switches to user macro 1; when the 1# inner cover is lifted, the normally open contact of the relay K37 is disconnected and the normally open contact of the relay K21 is closed, indicating that the coal loading is completed and the traveling conditions are met. At this time, the inverter automatically switches to user macro 2. For storing two different types of motor data in one inverter, and being able to switch freely in different working modes. Define two user macros to store the inverter parameter setting groups (including parameter group 99) and motor identification data of "traveling" and "screw feeding" respectively. These values are saved in permanent memory and will not be lost regardless of whether the power is turned off, so that these data can be called when used.

[0032] The output ends of the frequency converter of the utility model are respectively connected with the traveling motor and the screw feeder, and the remaining two frequency converters are used for standby, which saves maintenance time, shortens the maintenance time and ensures smooth production; the communication module 1 is connected with the communication expansion card through the port, and the CPU module is connected with the remote terminal through the port through the wireless communication module, so that the operating personnel can observe the operating status of the frequency converter at any time through the mobile phone or PC. If the equipment fails, the mobile phone or PC will alarm to ensure the safety of enterprise production; the communication module 2 is connected with the HMI human-machine interaction screen through the port, and the data information of the frequency converter can be checked at any time through the HMI human-machine interaction screen, which is convenient for maintenance and saves time and effort.

Claims

1. A spiral feeding and running control device for a coal loading car, characterized in that: It includes a control circuit and a main circuit. The main circuit includes a frequency converter. The frequency converter is provided with a communication expansion card, a digital I / O expansion module 1, and a digital I / O expansion module 2. The motor output end of the frequency converter is respectively connected to the motor 2 and the motor 1. The power input end of the frequency converter is connected to the AC power supply. The main circuit is connected to the control circuit.

2. A spiral feeding and running control device for a coal loading vehicle according to claim 1, characterized in that: The main circuit also includes contactors KM1 and KM2. Motor 2 is connected to the motor output terminal of the inverter through the main contacts of contactor KM1, and motor 1 is connected to the motor output terminal of the inverter through the main contacts of contactor KM2.

3. A spiral feeding and running control device for a coal charging vehicle according to claim 1, characterized in that: The control loop includes frequency conversion branch 1, frequency conversion branch 2, frequency conversion branch 3, frequency conversion branch 4, and a control unit. Frequency conversion branch 1, frequency conversion branch 2, frequency conversion branch 3, and frequency conversion branch 4 are all connected to the control unit. Frequency conversion branch 1 includes a normally open contact of relay KA2 and a normally open contact of relay KA7 connected to digital quantity I / O expansion module 1. Frequency conversion branch 2 includes a normally open contact of relay KA3, a normally open contact of relay KA4, and a normally open contact 2 of relay KA1 connected to digital quantity I / O expansion module 2. The normally open contact 2 of relay KA1 is connected in series with the normally open contact 2 of contactor KM2. Frequency conversion branch three includes normally open contact four of relay KA1 connected to the digital input port of the frequency converter, normally open contact two of relay KA8, normally open contact two of relay KA5, and normally open contact two of relay KA6. Frequency conversion branch four includes the coil of relay K1 and the coil of relay K2 connected to the digital output port of the frequency converter.

4. A spiral feeding and running control device for a coal charging vehicle according to claim 3, characterized in that: The control unit comprises a CPU module, a communication module 1 and a wireless communication module. The communication module 1 is connected to the communication expansion card through a port, and the CPU module is connected to the remote terminal through a port through the wireless communication module.

5. A spiral feeding and running control device for a coal charging vehicle according to claim 3, characterized in that: The control circuit also includes a motor 2 control circuit and a motor 1 control circuit connected in parallel, and the input end of the motor 2 control circuit is connected to the working power supply; The control circuit of motor 2 includes branches a, b, c, d and e connected in parallel. Branch a includes the normally open contact of the switching switch SA4 and the coil of the relay KA7 connected in series. Branch b includes the normally open contact 1 of the switching switch SA2 and the coil of the relay KA3 connected in series. Branch c includes the normally open contact 2 of the switching switch SA2 and the coil of the relay KA4 connected in series. Branch d includes the normally open contact 2 of the switching switch SA1 and branch e connected in series. The coil of the relay KA2 is connected in parallel with branch e. Branch e includes the normally closed contact of the relay K2, the normally closed auxiliary contact of the contactor KM1 and the coil of the contactor KM2 connected in series.

6. A spiral feeding and running control device for a coal charging vehicle according to claim 5, characterized in that: The motor control circuit comprises a branch j, a branch m, a branch f, a branch g, and a branch h connected in parallel; Branch j includes the normally open contact 1 of the transfer switch SA1 and the coil of the relay KA1 connected in series; branch f includes the normally open contact of the transfer switch SA5 and the coil of the relay KA8 connected in series; branch g includes the normally open contact 1 of the transfer switch SA3 and the coil of the relay KA5 connected in series; branch h includes the normally open contact 2 of the transfer switch SA3 and the coil of the relay KA6 connected in series; Branch m includes the normally open contact three of the switching switch SA1, the normally closed contact of the relay K2, the normally closed auxiliary contact of the contactor KM2, and the coil of the contactor KM1 connected in series. One end of the branch m is connected to one end of the branch k, the other end of the normally closed auxiliary contact of the contactor KM2 is connected to the other end of the branch k, and the other end of the normally closed auxiliary contact of the contactor KM2 is also connected to the coil of the contactor KM1. Branch k includes the normally closed contact of the relay KA2 and the normally open contact three of the relay KA1 connected in series. The normally open contact of the contactor KM1 is connected in parallel with the normally open contact three of the relay KA1.

7. A spiral feeding and running control device for a coal charging vehicle according to claim 4, characterized in that: The wireless communication module is any one of a 5G communication module, a 4G communication module, a Bluetooth module, a WiFi module, a GSM module, a CDMA module, a CDMA module, a WCDMA module, a TD-SCDMA module, a Zigbee module and a LoRa module, or a combination of any of them.

8. A spiral feeding and running control device for a coal charging vehicle according to claim 4, characterized in that: The remote terminal is used to obtain data information from the wireless communication module.

9. A spiral feeding and running control device for a coal charging vehicle according to claim 4, characterized in that: The control unit also includes a power module, a communication module 2, and a digital input module. The CPU module, the communication module 1, the communication module 2, and the digital input module are connected through ports. The power module is used to provide working power. The digital input module is respectively connected to the normally open auxiliary contact of the contactor KM1, the normally open auxiliary contact 1 of the contactor KM2, the normally open contact 1 of the relays KA1~KA8, the normally open contact of the relay K1, and the normally open contact of the relay K2 through ports.

10. A spiral feeding and running control device for a coal charging vehicle according to claim 9, characterized in that: The communication module 2 is connected to the HMI human-machine interaction screen via a port.