阅读说明：本技术 隧道电机车在线快速充电控制装置 (Online quick charge control device of tunnel electric locomotive ) 是由 陆凯忠 王传富 王坤宗 骆玉贤 景文才 *** 顾聪 刘刚 顾怡雯 俞秋兴 于 2020-05-15 设计创作，主要内容包括：本发明涉及一种隧道电机车在线快速充电控制装置,通过在站台内安装一组滑触线、导向喇叭口、机车行走方向检测装置,使得机车在驶入站台后,集电器自动滑入滑触线,通过自动检测,进行在线充电,机车离开充电区域能够自动断电；电池充满后能够自动停止充电,防止过充电。充电过程中机车可以小范围内前后行驶,不影响泥斗、管片及其他隧道开挖所需的材料吊运,吊运完成后,通过机车行驶,集线器自动脱离滑触线,终止充电。能够有效节约充电时间,保证机车长时间续航。节省了大量的施工作业时间。(The invention relates to an online quick charging control device of a tunnel electric locomotive, which is characterized in that a group of sliding contact lines, a guide bell mouth and a locomotive walking direction detection device are arranged in a platform, so that a current collector automatically slides into the sliding contact lines after a locomotive drives into the platform, online charging is carried out through automatic detection, and the locomotive can automatically cut off power when leaving a charging area; after the battery is fully charged, the charging can be automatically stopped, and the overcharge can be prevented. The locomotive can go around in the small circle in the charging process, does not influence the mud bucket, section of jurisdiction and other required material handling of tunnel excavation, and after the handling is accomplished, through the locomotive traveles, the concentrator breaks away from the wiping line automatically, stops charging. The charging time can be effectively saved, and the long-time endurance of the locomotive is ensured. And a large amount of construction operation time is saved.)

1. An online rapid charging control device for a tunnel electric locomotive is characterized by comprising a group of sliding contact lines, a guide horn mouth, an electric locomotive walking direction detection device, a charging control box and a group of current collectors;

the positive and negative electrode outputs of the charger are respectively connected to a group of sliding contact lines arranged in a platform layer of the starting station; a guide bell mouth is arranged at the end part of each sliding contact line, so that a current collector at the top end of the electric locomotive can slide in freely; the electric locomotive walking direction detection device comprises an iron plate arranged in the direction of a sliding contact line behind a guide bell mouth and two proximity sensors on the roof of the electric locomotive; the charging control box is arranged on the top of the cab of the electric locomotive, two proximity sensors are arranged beside the charging control box along the front and rear directions of the electric locomotive, and a group of current collectors are fixed on the top of the cab of the electric locomotive through a support rod; when the electric locomotive runs into an initial station, a group of current collectors slide into a group of sliding contact lines through a guide bell mouth and are respectively communicated with the anode and the cathode of a charger, the two proximity sensors sense and detect iron plates in front and at the back, signals are successively sent into a charging control box, the charging control box judges that the electric locomotive enters or leaves a charging area after receiving the signals of the two proximity sensors, and the charging control box controls a charging loop to be switched on or switched off.

2. The on-line rapid charging control device for the tunnel electric locomotive according to claim 1, wherein the control circuit in the charging control box comprises a fuse, a resistor, a thyristor, a time relay, a direct current contactor, a current sensor, a voltage stabilizing diode and a PLC;

the fuse FU, the divider resistors R4 and R5 which are connected in series are connected to the two ends of the positive electrode and the negative electrode of the battery pack in parallel, the voltage of the serial connection point of the divider resistors R4 and R5 is control voltage Vc, the Vc provides the voltage of a current sensor and a PLC power supply, and the control voltage Vc and the negative electrode are connected with a voltage stabilizing diode DW; the resistor R2 and the resistor R3 which are connected in series are connected in parallel at the two ends of the positive electrode and the negative electrode of the battery pack, and the connection point of the resistor R2 and the resistor R3 which are connected in series is connected with the thyristor triggering gate through the light emitting diode LED; the contactor KM coil is connected with the time relay SJ coil in parallel after being connected with the time relay normally open switch in series, and then is connected with the PLC control switch, the thyristor and the resistor R1 in series after being connected in parallel to form a charging control loop; the current sensor detects charging current of the main loop and sends a PLC (programmable logic controller), the two proximity sensors detect signals and send the signals to the PLC, and the PLC controls the switch to be switched on or switched off the power-on loop of the coil of the contactor KM after logic operation, so that the normally open switch of the contactor KM is controlled to be switched on or switched off the charging main loop.

Technical Field

The invention relates to a charging control technology, in particular to an online rapid charging control device for a tunnel electric locomotive.

Background

An electric locomotive in tunnel construction is necessary equipment for horizontal transportation in a tunnel. It is responsible for conveying the dregs in the tunnel to the ground and conveying the pipe pieces, bolts, rails and other objects into the tunnel. The electric locomotive relies on large-scale group battery power supply, and the group battery needs to charge, guarantees the power supply of electric locomotive.

In the construction in the past, the group battery needs handling to ground charging station, relies on the three-phase to exchange after through the rectification, utilizes controllable thyristor, 12 pulse trigger circuit to realize the controllability of electric current, and the storage battery charging wire relies on two rubber cables of taking the plug to connect the manual work to insert on the storage battery stake usually and realizes charging to the group battery, and the back is accomplished in charging, and the manual work is demolishd the charging wire, realizes whole charging flow.

In the charging process, charging cables (positive and negative electrodes) are manually connected to positive and negative electrode pile heads of the battery pack, then a charger is started to charge (lithium ion battery is charged quickly), and in the process, because the electric locomotive is connected with the charging wire, the electric locomotive cannot move back and forth, and construction materials on a trailer cannot be lifted in time. The construction needs to be stopped for a period of time, and meanwhile, the front shield machine cannot be constructed in time (the standby time is too long), so that a large amount of construction operation time is wasted.

Disclosure of Invention

The invention provides an online quick charging control device for a tunnel electric locomotive, which aims at solving the problems that charging wires need to be inserted manually during charging, the locomotive is limited in walking during charging, and a large amount of construction operation time is wasted.

The technical scheme of the invention is as follows: an online rapid charging control device for a tunnel electric locomotive comprises a group of sliding contact lines, a guide horn mouth, an electric locomotive walking direction detection device, a charging control box and a group of current collectors; the positive and negative electrode outputs of the charger are respectively connected to a group of sliding contact lines arranged in a platform layer of the starting station; a guide bell mouth is arranged at the end part of each sliding contact line, so that a current collector at the top end of the electric locomotive can slide in freely; the electric locomotive walking direction detection device comprises an iron plate arranged in the direction of a sliding contact line behind a guide bell mouth and two proximity sensors on the roof of the electric locomotive; the charging control box is arranged on the top of the cab of the electric locomotive, two proximity sensors are arranged beside the charging control box along the front and rear directions of the electric locomotive, and a group of current collectors are fixed on the top of the cab of the electric locomotive through a support rod; when the electric locomotive runs into an initial station, a group of current collectors slide into a group of sliding contact lines through a guide bell mouth and are respectively communicated with the anode and the cathode of a charger, the two proximity sensors sense and detect iron plates in front and at the back, signals are successively sent into a charging control box, the charging control box judges that the electric locomotive enters or leaves a charging area after receiving the signals of the two proximity sensors, and the charging control box controls a charging loop to be switched on or switched off.

The control circuit in the charging control box comprises a fuse, a resistor, a thyristor, a time relay, a direct current contactor, a current sensor, a voltage stabilizing diode and a PLC; the fuse FU, the divider resistors R4 and R5 which are connected in series are connected to the two ends of the positive electrode and the negative electrode of the battery pack in parallel, the voltage of the serial connection point of the divider resistors R4 and R5 is control voltage Vc, the Vc provides the voltage of a current sensor and a PLC power supply, and the control voltage Vc and the negative electrode are connected with a voltage stabilizing diode DW; the resistor R2 and the resistor R3 which are connected in series are connected in parallel at the two ends of the positive electrode and the negative electrode of the battery pack, and the connection point of the resistor R2 and the resistor R3 which are connected in series is connected with the thyristor triggering gate through the light emitting diode LED; the contactor KM coil is connected with the time relay SJ coil in parallel after being connected with the time relay normally open switch in series, and then is connected with the PLC control switch, the thyristor and the resistor R1 in series after being connected in parallel to form a charging control loop; the current sensor detects charging current of the main loop and sends a PLC (programmable logic controller), the two proximity sensors detect signals and send the signals to the PLC, and the PLC controls the switch to be switched on or switched off the power-on loop of the coil of the contactor KM after logic operation, so that the normally open switch of the contactor KM is controlled to be switched on or switched off the charging main loop.

The invention has the beneficial effects that: according to the on-line quick charging control device for the tunnel electric locomotive, the device is connected between the charger and the locomotive, so that the on-line charging can be automatically carried out when the locomotive enters a charging area, and the power can be automatically cut off when the locomotive leaves the charging area; the battery can automatically stop charging after being fully charged, overcharge is prevented, charging time can be effectively saved, and long-time endurance of the locomotive is guaranteed. And a large amount of construction operation time is saved.

Drawings

FIG. 1 is a schematic structural diagram of an on-line fast charging control device of a tunnel electric locomotive according to the present invention;

FIG. 2 is a schematic view of the installation of the power receiving and control device on the top of the electric locomotive of the present invention;

FIG. 3 is a schematic view of the installation of trolley lines in the apparatus of the present invention;

FIG. 4 is a charging flow chart of the apparatus of the present invention;

FIG. 5 is a flow chart of the charging stop of the present invention;

FIG. 6 is a flow chart of the present invention after being fully charged;

FIG. 7 is a schematic diagram of the proximity sensor pulse during the charging of the electric locomotive of the present invention;

fig. 8 is a schematic diagram of the proximity sensor pulse during the process of the electric locomotive leaving the charging area according to the present invention.

Detailed Description

The invention discloses an on-line quick charging control device of a tunnel electric locomotive, which is added between a charger and the tunnel locomotive provided with a battery pack, and a group of trolley lines, a guide bell mouth and a locomotive running direction detection device are installed in a platform, so that after the locomotive drives into the platform, a group of current collectors automatically and respectively slide into the group of trolley lines, and the on-line charging is carried out through automatic detection.

The device is added between the charger and the battery pack, as shown in the structural schematic diagram of the online rapid charging control device of the tunnel electric locomotive shown in fig. 1, the device is shown in a dotted line frame. And the positive and negative electrode outputs of the charger are respectively connected to two sliding contact lines arranged in a platform layer behind the starting station, the charging control box is connected with the two sliding contact lines through a current collector and electrified, and the charging control box performs charging control on the locomotive battery pack.

As shown in fig. 2, the installation diagram of the power receiving and controller at the top of the electric locomotive of the device of the invention is that a charging control box 3 is arranged at the top of the cab of the electric locomotive, two proximity sensors 2 are arranged beside the charging control box along the front and back directions of the electric locomotive, a current collector 1 is a conductive metal block and is fixed at the top of the cab of the electric locomotive through a support rod, and a battery pack 4 on the locomotive as a charging object, the proximity sensors 2 as charging judgment signals and the current collector 1 as a charger connection point are all connected with the circuit in the charging control box through wires.

As shown in fig. 3, two trolley wires 8 are fixed on a concrete top layer 7 of the platform layer by a trolley wire mounting bracket 6, and the whole trolley wire mounting bracket is fixed by expansion bolts. The sliding contact line 8 enters the end part to be provided with the guide horn mouth 5, so that the current collector 1 at the top end of the electric locomotive can slide in freely, and a rectangular iron plate 9 is arranged behind the guide horn mouth 5 in the direction of the sliding contact line 8 and used for detecting the proximity sensor 2. The current collector 1 is used for automatically sliding on the sliding contact line 8 when the electric locomotive enters construction materials on the platform lifting trailer and is connected with a charging circuit. The control box judges and controls the charging state (charging, stopping). The proximity sensor on the top of the cab of the electric locomotive is used for judging whether the locomotive enters a charging area or leaves the charging area, when the proximity sensor 2 passes from right to left in the figure 3, the proximity sensor 2 judges that the locomotive current collector 1 enters a trolley line, and when the proximity sensor 2 passes from left to right, the proximity sensor 2 judges that the locomotive current collector 1 is separated from the trolley line; the guiding horn mouth 5 is used for guiding the current collector to finely adjust the posture when the current collector 1 just enters the sliding contact line, and the current collector smoothly enters the sliding contact line.

The proximity sensor 2 collects signals and sends the signals into the charging control box 3, the charging control box 3 controls whether to charge or not, and the arrangement of the test points of the proximity sensor 2 ensures that the current collector 1 is in no-load and no-current load when entering the sliding contact line and leaving the sliding contact line, so that the phenomenon of sparking caused by poor contact is prevented, and the current collector 1 and the sliding contact line 3 are damaged. Besides the terminals of the battery pack which are connected with the on-line charging loop, a group of input sockets are additionally arranged for off-line charging. The control power supply of the device is taken from a locomotive battery pack power supply, a fuse FU, a divider resistor R4 and a divider resistor R5 are connected in series with the positive electrode and the negative electrode of the battery pack in parallel, the series connection point Vc of the divider resistors R4 and R5 is used as control voltage, a Hall current sensor HET and a PLC power supply are provided, and the control voltage Vc and the negative electrode end are connected with a voltage stabilizing diode DW. The power-on or power-off state of the coil of the direct current contactor KM is controlled through the PLC control switch, so that the on-off of a normally open switch of the direct current contactor KM on the charging main loop is controlled to realize the on-off of the charging loop. The series resistor R2 and the resistor R3 are connected in parallel at two ends of the voltage of the locomotive battery pack, and the connection point of the series resistor R2 and the resistor R3 is connected with the thyristor trigger gate through the light emitting diode LED. And after being connected in parallel with the contactor KM coil and the time relay normally-open switch which are connected in series, the time relay SJ coil is connected in series with the PLC control switch, the thyristor and the resistor R1 to form a charging control loop. The Hall current sensor detects charging current of the main loop to the PLC, the PLC sends out a control signal to switch on or switch off the control loop after logical operation, and therefore whether the coil of the contactor KM is electrified or not is controlled, the coil of the contactor KM is electrified, the normally open switch of the contactor KM is switched on or off, and the charging loop is controlled to be switched on or switched off. The working principle of the method is described below according to the process classification.

The normal charging process is as shown in fig. 4, the charger is powered on and started, output current is transmitted to a trolley line 8 (a safety type trolley line), the electric locomotive is driven out from the tunnel and slowly approaches a charging area, and when a current collector 1 positioned at the top of a cab of the locomotive approaches a guide bell mouth 5 of the trolley line 8, the current collector 1 is restricted by the guide bell mouth and slowly enters the trolley line 8. At the moment, the current collector 1 is powered on, but the direct current contactor KM in the controller is not attracted, and the locomotive cannot be charged, so that no current is transmitted at the moment when the current collector 1 is contacted with the sliding contact line 8, no current spark can be generated, although the control device is supplied with power through the locomotive battery pack, the Hall sensor and the PLC are in a working state, and the thyristor is also in a triggering and conducting condition, but because the PLC does not receive an instruction of the proximity sensor 2, the PLC controls the switch to be in a disconnected state, so that the thyristor is in a disconnected state without forward conducting voltage, and the time relay SJ and the contactor KM are not powered.

When the current collector 1 slides through the guide and enters a sliding contact line, a rectangular iron plate 9 is arranged later, when the proximity sensor passes through the small iron plate, a signal is detected (the subsequent description of the detection method), after the sensor transmits the signal to the PLC, the PLC judges the motion state (retreating) of the locomotive, the control output node sends out a closing instruction, the PLC controls the switch to be closed, the thyristor is conducted in the forward direction, the time relay SJ coil is electrified and attracted, the direct current contactor KM coil is electrified in a delayed mode, the charging loop is conducted in a delayed mode, and the charger starts to charge the locomotive battery. At the moment, the locomotive does not influence the low-speed driving of the locomotive in a small range, the position of the trailer is adjusted to cooperate with a travelling crane to hoist construction materials such as a mud bucket and a duct piece, the time of the electric locomotive staying in the starting station is shortened, and the construction time is saved.

When the charging is finished, the flow is as shown in fig. 5. When the loading and unloading of construction materials such as a mud bucket and a duct piece are finished and an electric locomotive leaves a station, firstly, a proximity sensor detects a signal through a small iron plate (the detection method is described later), after the sensor transmits the signal to a PLC (programmable logic controller), the PLC obtains the motion state (advancing) of the locomotive through judgment, a control output node sends a disconnection instruction, a PLC control switch is disconnected, a direct current contactor KM coil is de-energized, a charging main loop is disconnected, a charger stops charging the locomotive, then a current collector leaves a sliding contact line, at the moment, no current flows between the sliding contact line and the current collector, the condition that the current collector is disconnected from the sliding contact line is instantly unloaded is ensured, and no spark is generated between the. Finally, the collector leaves the pilot horn and the locomotive leaves the station and enters the tunnel. Whether the battery pack is full of electricity or not in the period of time, a part of electricity is well supplemented automatically on the premise of not influencing construction, and the electric locomotive can run back and forth in the tunnel.

The process when the electric locomotive is fully charged in the charging area is shown in fig. 6. When the locomotive is staying in the charging area for a long time because the locomotive has enough electric quantity per se or because of other reasons, the locomotive is fully charged without waiting for leaving the charging area. At this moment, hall sensor detects charging current and is close to zero, gives PLC to current signal, and PLC passes through logical operation, and output contact disconnection instruction, no matter whether the locomotive leaves the region of charging, in time breaks the charging circuit, then closes the charging circuit again, carries out charging current and detects, so through 3 current detection circulation, PLC confirms that the electric quantity has been full of through the judgement, charges and stops. Therefore, under the condition that the electric locomotive is fully charged, no matter whether the locomotive resides in a charging area or not, the charging loop is timely disconnected, overcharge is prevented, and the battery pack is protected.

The flow of determining that the electric locomotive enters the charging area is shown in fig. 7. X1 is 1# proximity sensor, X2 is 2# proximity sensor, when the electric locomotive enters a charging area, X1 meets a small iron plate first and sends out a signal pulse, then X2 meets the small iron plate and also sends out a signal pulse. The X1 pulse leads the X2 pulse. The PLC high-speed counter is used for programming to judge that the electric locomotive enters a charging area. Otherwise, as in fig. 8. When X2 is ahead of X1, the electric locomotive is judged to leave the charging area, and the pull-in and the pull-off of the contactor KM are controlled through PLC programming, so that the purpose of controlling the charging state is achieved.

The sliding contact line is matched with the guide horn mouth, the tunnel electric locomotive is quickly charged in a short period on line, and the electric quantity loss of the electric locomotive is compensated, so that the electric locomotive does not need to be manually plugged with a charging line, the electric locomotive cannot walk during charging, the work efficiency is improved, and the construction period is saved.

The locomotive can go forward and backward in a small range (depending on the length of the trolley line) in the charging process, the hoisting of a mud bucket, a duct piece and other materials required by tunnel excavation is not influenced, and after the hoisting is finished, the concentrator automatically breaks away from the trolley line through the running of the locomotive, so that the charging is stopped. Like this, can effectively practice thrift the charging time, guarantee the long-time continuation of the journey of locomotive. And a large amount of construction operation time is saved.

The state of the tunnel electric locomotive entering and exiting the charging area is judged by utilizing the proximity sensor, so that the current collector is ensured to be in no-load contact and disjunction at the moment of contacting and separating the sliding contact line, and the sliding contact line and the current collector are prevented from being damaged by electric sparks. The proximity sensor is used for judging the state of the tunnel electric locomotive entering and exiting the charging area, the charging state is controlled, and a handshake protocol between the electric locomotive battery and the charger is realized.