Railway crossing barrier stroke control device

By introducing diodes and capacitors into the railroad rail crossing stroke controller, the problem of lack of polarity and voltage stabilization protection in the original technology is solved, the stability of power input and the accuracy of the rail crossing stroke are achieved, and the Equipment reliability and low cost of transformation.

CN222167456UActive Publication Date: 2024-12-13ANSHAN IRON & STEEL GROUP CORPORATION
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Patent Information

Application Number
CN202421017405.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-11
Publication Date
2024-12-13
Estimated Expiration
2034-05-11

AI Technical Summary

Technical Problem

The original stroke controller of the railway crossing fence lacks polarity protection and voltage stabilization protection, resulting in unstable power input, affecting the accuracy of the fence travel and the reliability of the equipment.

Method used

A device including a magnetic switch, a gate stroke controller and a control circuit is designed to ensure the stability of the power input through diodes and capacitors. Diodes D1, D2, and D3 are used to suppress the absorption of reverse electromotive force, and capacitors C1, C2 are used to store and stabilize electrical energy, ensuring that the voltage fluctuates quickly to absorb and release electrical energy.

Benefits of technology

It effectively prevents damage caused by reverse polarity of the power supply, stabilizes the voltage, improves the accuracy of the barrier stroke and the reliability of the equipment, and reduces the cost of transformation.

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Patent Text Reader

Abstract

The utility model relates to a railway crossing barrier stroke control device which comprises a barrier stroke controller, the barrier stroke controller comprises a first control circuit and a second control circuit, the first control circuit is connected with a first magnetic switch through a first terminal and a second terminal, and the second control circuit is connected with a second magnetic switch through a third terminal and a fourth terminal. The first control circuit and the second control circuit are connected in parallel, the other end of the first control circuit and the other end of the second control circuit are both connected with the anode of the diode D3, the cathode of the diode D3 is connected with the cathode of the direct-current power source, and one end of the first control circuit is connected with the anode of the direct-current power source through the second terminal. One end of the control circuit 2 is connected with the anode of the DC power supply through a terminal 4. The utility model has the advantages that the diodes D1-D3 are used for inhibiting and absorbing the reverse electromotive force; the capacitor C1 and the capacitor C2 are used for storing electric energy, and when the magnetic switch is switched off, the electric energy stored by the capacitor C1 and the capacitor C2 can be released through the R8, the R10 and the base electrode of the triode.
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Description

Technical Field

[0001] The utility model relates to the technical field of traffic equipment, in particular to a railway crossing fence travel control device. Background Art

[0002] The location where the railway and the highway intersect is called a railway crossing. At present, the railway crossing outside the factory area is protected by fences. Since the input power supply of the original stroke controller is DC12V and the internal circuit has no polarity protection, the stroke controller is often damaged, resulting in the fence not being able to operate normally. At the same time, the original stroke controller has no voltage stabilization protection, and is greatly affected by the external input voltage, which affects the action of the relay and causes inaccurate fence travel. Improvement is urgently needed. Summary of the invention

[0003] The utility model aims to provide a railway crossing fence travel control device, which increases polarity protection and voltage stabilization protection and improves the accuracy of the fence travel.

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

[0005] A railway crossing barrier travel control device comprises a magnetic switch 1, a magnetic switch 2 and a barrier travel controller. The magnetic switch 1 and the magnetic switch 2 are respectively arranged on brackets outside the barrier track, and baffles 1 and 2 are respectively arranged at the head and tail of the barrier. The magnetic switch 1 is used to collect signals from baffle 1, and the magnetic switch 2 is used to collect signals from baffle 2. The barrier travel controller comprises a control circuit 1 and a control circuit 2. The control circuit 1 is connected to the magnetic switch 1 through terminals 1 and 2, and the control circuit 2 is connected to the magnetic switch 2 through terminals 3 and 4. The control circuit 1 and the control circuit 2 are connected in parallel. The other end of the control circuit 1 and the other end of the control circuit 2 are both connected to the anode of a diode D3, and the cathode of the diode D3 is connected to the negative electrode of a direct current power supply. One end of the control circuit 1 is connected to the positive electrode of the direct current power supply through terminal 2, and one end of the control circuit 2 is connected to the positive electrode of the direct current power supply through terminal 4.

[0006] The control circuit 1 includes a relay 1, one end of a coil of the relay 1 is respectively connected to the anode of a diode D1, one end of a resistor R2, and the collector of a transistor Q1, the other end of the coil of the relay 1 is respectively connected to the anode of a light-emitting diode LED2, the cathode of a diode D1, and a terminal 2, one end of the resistor R1 is connected to the cathode of a light-emitting diode LED2, the other end of the resistor R2 is connected to the cathode of a light-emitting diode LED1, the base of the transistor Q1 is respectively connected to one end of a resistor R4 and one end of a resistor R5, the other end of the resistor R4 is respectively connected to one end of a capacitor C1 and one end of a resistor R3, the other end of the resistor R3 is connected to the terminal 1, the other end of the capacitor C1, the other end of the resistor R5, the emitter of the transistor Q1, and the other end of the resistor R1 are respectively connected to the other end of the control circuit 1, and the anode of LED1 is connected to the terminal 2.

[0007] The control circuit 2 includes a relay 2, one end of the coil of the relay 2 is respectively connected to the anode of the diode D2, one end of the resistor R9, and the collector of the transistor Q2, the other end of the coil of the relay 2 is respectively connected to the anode of the light-emitting diode LED3, the cathode of the diode D2, and the terminal 4, the other end of the resistor R9 is connected to the cathode of the light-emitting diode LED3, the base of the transistor Q2 is respectively connected to one end of the resistor R8 and one end of the resistor R10, the other end of the resistor R8 is respectively connected to one end of the capacitor C2 and one end of the resistor R6, the other end of the resistor R6 is connected to the terminal 3, the other end of the capacitor C2, the other end of the resistor R10, and the emitter of the transistor Q2 are connected to the other end of the control circuit 2, and the anode of the LED3 is connected to the terminal 4.

[0008] Terminal one is connected to one end of magnetic switch one, and terminal two is connected to the other end of magnetic switch one.

[0009] Terminal three is connected to one end of magnetic switch two, and terminal four is connected to the other end of magnetic switch two.

[0010] It also includes a main circuit and a control circuit. The main circuit includes an overheating relay, a forward contactor, and a circuit breaker connected to the barrier motor in sequence. The input end of the circuit breaker is connected to a three-phase AC power supply. The main circuit also includes a reverse contactor. The main contacts of the forward contactor are connected between the three-phase AC power supply and the barrier motor to form a forward connection mode. The main contacts of the reverse contactor are connected between the three-phase AC power supply and the barrier motor to form a reverse connection mode. The main circuit and the control circuit are connected.

[0011] Control circuit three includes control circuit a and control circuit b, control circuit a and control circuit b are connected in parallel, control circuit a includes the coil of the forward contactor, the coil of the forward contactor is connected in series with the normally closed contact of relay one, and control circuit b includes the coil of the reverse contactor, the coil of the reverse contactor is connected in series with the normally closed contact of relay two.

[0012] The fence motor is used to drive the fence forward and backward.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. Diodes D1 to D3 are used to suppress the absorption of reverse electromotive force. The negative pole of the DC power supply is connected to diode D3. Diode D3 is used to prevent the positive and negative poles of the DC power supply from being connected in reverse, which may cause damage to the transistor.

[0015] 3. Capacitors C1 and C2 are connected in the control circuit to store electric energy and stabilize voltage. When the voltage of the control circuit fluctuates, they can quickly absorb electromotive force to store electric energy and stabilize the voltage. When the magnetic switch is disconnected, the electric energy stored in itself can be released through R8, R10 and the base of the transistor;

[0016] 4. The fence travel controller has a simple structure, low modification cost and is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the layout of railway crossing fences.

[0018] Figure 2 It is a schematic diagram of the principle of the railway crossing barrier control device.

[0019] In the figure: 1-magnetic switch 1 2-magnetic switch 2 2 3-fence. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] [Example 1]

[0023] The original travel controller was removed. In order to reduce construction costs, the input power supply of the improved travel controller still uses DC12V. In order to ensure the safety of the railway crossing, the fence travel controller was studied and improved. The travel of each fence 3 is driven by a set of railway crossing fence travel control devices. Figure 1, a magnetic switch 1 and a magnetic switch 2 are respectively arranged on the bracket outside the track of each fence 3, and a baffle 1 and a baffle 2 are respectively arranged at the head and tail of each fence 3, the magnetic switch 1 is used to collect the signal of baffle 1 and transmit the collected signal to the control circuit 1, and the magnetic switch 2 is used to collect the signal of baffle 2 and transmit the collected signal to the control circuit 2, and baffle 1 and baffle 2 are magnetic strips. Figure 2 Each set of railway crossing barrier 3 control device includes a main circuit and a control circuit three. The main circuit includes an overheating relay FR, a forward contactor KM1, and a circuit breaker QK connected to the barrier 3 motor in sequence. The input end of the circuit breaker QK is connected to a three-phase AC power supply. The main circuit also includes a reverse contactor KM2. The main contact of the forward contactor KM1 is connected between the three-phase AC power supply and the barrier 3 motor to form a forward connection mode. The main contact of the reverse contactor KM2 is connected between the three-phase AC power supply and the barrier 3 motor to form a reverse connection mode. The barrier 3 motor is used to drive the barrier 3 forward and backward; the control circuit three includes a control circuit a and a control circuit b. The control circuit a and the control circuit b are connected in parallel. The control circuit a includes a coil of the forward contactor KM1, and the coil of the forward contactor KM1 is connected in series with the normally closed contact of the relay K1. The control circuit b includes a coil of the reverse contactor KM2, and the coil of the reverse contactor KM2 is connected in series with the normally closed contact of the relay K2.

[0024] The fence 3 travel controller includes a control circuit 1 and a control circuit 2, which are connected in parallel. The other end of the control circuit 1 and the other end of the control circuit 2 are both connected to the anode of the diode D3, the cathode of the diode D3 is connected to the negative pole of DC12V, and one end of the control circuit 1 and one end of the control circuit 2 are both connected to the positive pole of DC12V; the control circuit 1 includes a relay K1, one end of the coil of the relay K1 is respectively connected to the anode of the diode D1, one end of the resistor R2, and the collector of the transistor Q1, and the other end of the coil of the relay K1 is respectively connected to the light emitting The anode of the diode LED2, the cathode of the diode D1, and the terminal P2 (DC12V+) are connected, one end of the resistor R1 is connected to the cathode of the light-emitting diode LED2, the other end of the resistor R2 is connected to the cathode of the light-emitting diode LED1, the base of the transistor Q1 is connected to one end of the resistor R4 and one end of the resistor R5 respectively, the other end of the resistor R4 is connected to one end of the capacitor C1 and one end of the resistor R3 respectively, the other end of the resistor R3 is connected to the terminal P1 (DC12V-), the other end of the capacitor C1, the other end of the resistor R5, and the emitter of the transistor Q1 are connected to the cathode of the light-emitting diode LED2. The other end of the resistor R1 is connected to the other end of the control circuit one, and the anode of LED1 is connected to the terminal P2; the control circuit two includes a relay K2, one end of the coil of the relay K2 is connected to the anode of the diode D2, one end of the resistor R9, and the collector of the transistor Q2, the other end of the coil of the relay K2 is connected to the anode of the light-emitting diode LED3, the cathode of the diode D2, and the terminal P4 (DC12V+), the other end of the resistor R9 is connected to the cathode of the light-emitting diode LED3, the base of the transistor Q2 is connected to one end of the resistor R8, One end of resistor R10 is connected, the other end of resistor R8 is respectively connected to one end of capacitor C2 and one end of resistor R6, the other end of resistor R6 is connected to terminal P3 (DC12V-), the other end of capacitor C2, the other end of resistor R10, the emitter of transistor Q2 are connected to the other end of control circuit 2, the anode of LED3 is connected to terminal P4; terminal P1 is connected to one end of magnetic switch 1, terminal P2 is connected to the other end of magnetic switch 1; terminal P3 is connected to one end of magnetic switch 2, terminal P4 is connected to the other end of magnetic switch 2. Resistors R1, R2, and R9 are current limiting resistors used to ensure the normal operation of light-emitting diodes LED1, LED2, and LED3; transistors Q1 and Q2 are switching tubes used to control the power supply to the coils of relays K1 and K2; diodes D1, D2, and D3 suppress the absorption of reverse electromotive force and are used for polarity protection; capacitors C1 and C2 store electrical energy and are used for voltage stabilization protection; resistors R3, R4, R5, R6, R8, and R10 are current limiting and voltage-dropping resistors, R3, R4, and R5 are used to ensure the normal operation of transistor Q1, and R6, R8, and R10 are used to ensure the normal operation of transistor Q2.

[0025] Working process:

[0026] The barrier travel controller is normally connected to the DC12V power supply, the working indicator light (green) is on, and when the crossing barrier motor (forward / reverse) is running, the magnetic switch coincides with the magnetic stripe position on the barrier. The magnetic switch is turned on, the capacitor C1 / C2 is charged, and the voltage is stabilized; at the same time, the current flows to the base of the transistor, the emitter and collector of the transistor are turned on (the red light is on), and the relay K1 / K2 enters the working state: the normally closed contacts of the relay K1 / K2 are disconnected, and the power supply of the relay coil controlling the barrier motor is released (cut off). When the magnetic switch leaves the magnetic stripe position, the capacitor discharges through the resistor and continues to supply power to the base of the transistor. The transistor keeps the emitter and collector turned on, thereby keeping the relay K1 / K2 working normally. After 10 to 15 seconds, it returns to the initial state.

[0027] Diodes D1, D2, and D3 suppress the absorption of reverse electromotive force and are used for polarity protection. The reason is that when the polarity of the DC power supply is reversed, the transistors in the fence travel controller will be burned, causing the internal relay of the travel controller to not work properly, and the relay coil of the control motor will be in a normally closed state. When the fence motor is controlled, the motor (forward and reverse) will keep running, and the fence wheel cannot slow down until it reaches the limit of the magnetic switch, resulting in serious consequences such as the fence wheel colliding with the wheel stop, the fence wheel falling off the road, and the fence equipment being damaged; capacitors C1 and C2 store electrical energy and are used for voltage stabilization protection. The reason is that when the magnetic switch is in effect, the circuit voltage can quickly absorb the electromotive force and store electrical energy when it fluctuates, and stabilize the voltage. When the magnetic switch is disconnected, the stored electrical energy can be released normally through R8, R10 and the base of the transistor.

[0028] The diodes D1 to D3 of the utility model are used to suppress the effect of absorbing reverse electromotive force. The negative electrode of the DC power supply is connected with the diode D3, and the diode D3 is used to prevent the positive and negative electrodes of the DC power supply from being connected in reverse, which may cause damage to the transistor. The capacitors C1 and C2 are connected in the control loop, which are used to store electric energy and stabilize the voltage. When the voltage of the control loop fluctuates, the electromotive force can be quickly absorbed to store electric energy and stabilize the voltage. When the magnetic switch is disconnected, the electric energy stored in itself can be released through R8, R10 and the base of the transistor. The fence travel controller has a simple structure, low transformation cost and is easy to implement.

Claims

1. A railway crossing fence travel control device, characterized in that: It includes a magnetic switch 1, a magnetic switch 2, and a fence travel controller. The brackets on the outer sides of the fence track are respectively provided with the magnetic switch 1 and the magnetic switch 2. The front and rear ends of the fence are respectively provided with baffles 1 and 2. The magnetic switch 1 is used to collect signals from baffle 1, and the magnetic switch 2 is used to collect signals from baffle 2. The fence travel controller includes a control circuit 1 and a control circuit 2. The control circuit 1 is connected to the magnetic switch 1 through terminals 1 and 2, the control circuit 2 is connected to the magnetic switch 2 through terminals 3 and 4, the control circuit 1 and the control circuit 2 are connected in parallel, the other end of the control circuit 1 and the other end of the control circuit 2 are both connected to the anode of a diode D3, the cathode of the diode D3 is connected to the negative electrode of a DC power supply, one end of the control circuit 1 is connected to the positive electrode of a DC power supply through terminal 2, and one end of the control circuit 2 is connected to the positive electrode of a DC power supply through terminal 4.

2. A railway crossing barrier travel control device according to claim 1, characterized in that: The control circuit 1 includes a relay 1, one end of a coil of the relay 1 is respectively connected to the anode of a diode D1, one end of a resistor R2, and the collector of a transistor Q1, the other end of the coil of the relay 1 is respectively connected to the anode of a light-emitting diode LED2, the cathode of a diode D1, and a terminal 2, one end of the resistor R1 is connected to the cathode of a light-emitting diode LED2, the other end of the resistor R2 is connected to the cathode of a light-emitting diode LED1, the base of the transistor Q1 is respectively connected to one end of a resistor R4 and one end of a resistor R5, the other end of the resistor R4 is respectively connected to one end of a capacitor C1 and one end of a resistor R3, the other end of the resistor R3 is connected to the terminal 1, the other end of the capacitor C1, the other end of the resistor R5, the emitter of the transistor Q1, and the other end of the resistor R1 are respectively connected to the other end of the control circuit 1, and the anode of LED1 is connected to the terminal 2.

3. A railway crossing barrier travel control device according to claim 1, characterized in that: The control circuit 2 includes a relay 2, one end of the coil of the relay 2 is respectively connected to the anode of the diode D2, one end of the resistor R9, and the collector of the transistor Q2, the other end of the coil of the relay 2 is respectively connected to the anode of the light-emitting diode LED3, the cathode of the diode D2, and the terminal 4, the other end of the resistor R9 is connected to the cathode of the light-emitting diode LED3, the base of the transistor Q2 is respectively connected to one end of the resistor R8 and one end of the resistor R10, the other end of the resistor R8 is respectively connected to one end of the capacitor C2 and one end of the resistor R6, the other end of the resistor R6 is connected to the terminal 3, the other end of the capacitor C2, the other end of the resistor R10, the emitter of the transistor Q2 is connected to the other end of the control circuit 2, and the anode of the LED3 is connected to the terminal 4.

4. A railway crossing barrier travel control device according to claim 2, characterized in that: The terminal 1 is connected to one end of the magnetic switch 1, and the terminal 2 is connected to the other end of the magnetic switch 1.

5. A railway crossing barrier travel control device according to claim 3, characterized in that: The terminal three is connected to one end of the magnetic switch two, and the terminal four is connected to the other end of the magnetic switch two.

6. A railway crossing barrier travel control device according to claim 1, characterized in that: It also includes a main circuit and a control circuit. The main circuit includes an overheating relay, a forward contactor, and a circuit breaker connected to the barrier motor in sequence. The input end of the circuit breaker is connected to a three-phase AC power supply. The main circuit also includes a reverse contactor. The main contacts of the forward contactor are connected between the three-phase AC power supply and the barrier motor to form a forward connection mode. The main contacts of the reverse contactor are connected between the three-phase AC power supply and the barrier motor to form a reverse connection mode. The main circuit and the control circuit are connected.

7. A railway crossing barrier travel control device according to claim 6, characterized in that: The control circuit three includes a control circuit a and a control circuit b, which are connected in parallel. The control circuit a includes a coil of a forward contactor, which is connected in series with the normally closed contact of the relay one. The control circuit b includes a coil of a reverse contactor, which is connected in series with the normally closed contact of the relay two.

8. A railway crossing barrier travel control device according to claim 6, characterized in that: The fence motor is used to drive the fence forward and backward.