Interlocking circuit of cab of mining electric motor car

Abstract

The invention discloses a mining electric motor car cab interlocking circuit, and belongs to the field of mining electric motor cars, the mining electric motor car cab interlocking circuit comprises a first driver control loop, a second driver control loop and a knob switch S1, the first driver control loop is internally provided with a first driver console, a controller U1 and a controller U2, and the second driver control loop is internally provided with a second driver console, a controller U3 and a controller U4; the first driver console is connected with the knob switch S1; the first driver console is connected with the controller U1 and the controller U2 at the same time, and the second driver console is connected with the knob switch S1; according to the driver control interlocking circuit, the interlocking function of the activation end is achieved from a hard wire, mutual exclusion work of driver control loops at the two ends is achieved through selective connection of the knob switch S1, power supply interlocking of cabs at the two ends can be effectively achieved, and the circuit structure is simple and stable. The circuit is simple and stable in structure and easy to implement and maintain.

Description

Technical Field

[0001] The invention relates to the field of mining electric locomotives, in particular to a driver's cab interlocking circuit for mining electric locomotives. Background Art

[0002] Mining electric locomotives are mainly used for underground transportation of large lanes and long-distance transportation on the ground. It is equivalent to the electric locomotive head in railway transportation, pulling a train composed of mine cars or people cars on the track to complete the transportation of coal, gangue, materials, equipment, and personnel. Mining electric locomotives do not produce exhaust emissions during operation, will not pollute the air underground, and help improve the air quality in the mine and protect the health of miners. Mining electric locomotives have good explosion-proof performance, use explosion-proof electrical equipment and spark-proof materials, reduce the risk of explosion and fire, and ensure safe production in mines1. In addition, electric locomotives have less vibration and noise, reducing potential safety hazards. The driver controller is the core electrical component of vehicle operation, responsible for controlling the traction, braking and drive mode of the mining electric locomotive. In order to achieve two-way entry and exit of the unloading station, the mining electric locomotive is equipped with two front and rear driver cabs, and the activation of the driver cab is achieved through the cooperation of multi-knob switches and driver consoles.

[0003] However, when the two existing driver's cabs are working, sometimes the two driver's cabs are opened at the same time, which will cause program confusion and affect the safety of work. Summary of the invention

[0004] With regard to the above-mentioned problems existing in the prior art, the object of the present invention is to provide a mining electric locomotive driver's cab interlocking circuit to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A mine electric locomotive cab interlocking circuit comprises a first driver control circuit, a second driver control circuit and a knob switch S1, wherein the first driver control circuit is provided with a first driver control console, a controller U1 and a controller U2, and the second driver control circuit is provided with a second driver control console, a controller U3 and a controller U4;

[0007] The 24V+ port of the first control console in the first control loop is connected to the contact 2 of the knob switch S1; the contact 1 of the knob switch S1 is connected to the positive terminal of the external power supply;

[0008] The 24V- port of the first control console in the first control loop is connected to the negative terminal of the external power supply;

[0009] The CANH port of the first control console in the first control loop is connected to the contact 5 of the knob switch S1;

[0010] The first control console is connected to the input terminal of the controller U1 and the input terminal of the controller U2 at the same time.

[0011] The output end of the controller U1 is connected to the first motor via a three-phase line;

[0012] The output end of the controller U2 is connected to the second motor via a three-phase line;

[0013] The 24V+ port of the second control console in the second control loop is connected to the contact 3 of the knob switch S1;

[0014] The 24V- port of the second control console in the second control loop is connected to the negative terminal of the external power supply;

[0015] The CANH port of the second control console in the second control loop is connected to the contact 4 of the knob switch S1;

[0016] The CANL port of the first driver control station in the first driver control loop is connected to the CANL port of the second driver control station in the second driver control loop;

[0017] The second control console is connected to the input terminal of the controller U3 and the input terminal of the controller U4 at the same time.

[0018] The output end of the controller U3 is connected to the third motor via a three-phase line;

[0019] The output end of the controller U4 is connected to the fourth motor through a three-phase line.

[0020] As a further solution of the present invention: the controller U1 internally includes a DSP1 chip, a motor temperature detection unit, a current and voltage detection unit, and a resolver decoding unit.

[0021] As a further solution of the present invention: the controller U2 internally includes a DSP2 chip, a motor temperature detection unit, a current and voltage detection unit, and a resolver decoding unit.

[0022] As a further solution of the present invention: the controller U3 internally includes a DSP3 chip, a motor temperature detection unit, a current and voltage detection unit, and a resolver decoding unit.

[0023] As a further solution of the present invention: the controller U4 internally includes a DSP5 chip, a motor temperature detection unit, a current and voltage detection unit, and a resolver decoding unit.

[0024] As a further solution of the present invention: the external power supply is a 24V DC power supply.

[0025] As a further solution of the present invention: a display screen and operation buttons are provided inside the first driver's console; a display screen and operation buttons are also provided inside the second driver's console.

[0026] As a further solution of the present invention: the display screen and operation buttons in the first control console are of the same model as the display screen and operation buttons in the second control console.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention realizes the interlocking function of the activation end from the hard line, and realizes the mutually exclusive operation of the driver control circuits at both ends through the selective connection of the knob switch S1, that is, when one end works, the other end automatically stops working. The power-on circuit of the driver control console is controlled by the knob switch. Only when the driver control console in the driver's cab at one end is connected to the power supply by the knob switch, the control system at this end can control the operation of the locomotive. The present invention can effectively realize the power interlocking of the driver's cab at both ends, and the circuit structure is simple and stable. The circuit structure is simple and stable, easy to implement and maintain, and the logic interlocking function of the activation end is realized from the hard line to avoid misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The present invention is a schematic diagram of the circuit structure of a mining electric locomotive driver's cab interlocking circuit disclosed in an embodiment. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", and "connected" should be understood in a broad sense; for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, or an electrical connection, a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] See also Figure 1 , a mine electric locomotive cab interlocking circuit, comprising a first driver control circuit, a second driver control circuit and a knob switch S1, wherein the first driver control circuit is provided with a first driver control console, a controller U1 and a controller U2, and the second driver control circuit is provided with a second driver control console, a controller U3 and a controller U4;

[0033] The 24V+ port of the first control console in the first control loop is connected to the contact 2 of the knob switch S1; the contact 1 of the knob switch S1 is connected to the positive terminal of the external power supply;

[0034] The 24V- port of the first control console in the first control loop is connected to the negative terminal of the external power supply;

[0035] The CANH port of the first control console in the first control loop is connected to the contact 5 of the knob switch S1;

[0036] The first control console is connected to the input terminal of the controller U1 and the input terminal of the controller U2 at the same time.

[0037] The output end of the controller U1 is connected to the first motor via a three-phase line;

[0038] The output end of the controller U2 is connected to the second motor via a three-phase line;

[0039] The 24V+ port of the second control console in the second control loop is connected to the contact 3 of the knob switch S1;

[0040] The 24V- port of the second control console in the second control loop is connected to the negative terminal of the external power supply;

[0041] The CANH port of the second control console in the second control loop is connected to the contact 4 of the knob switch S1;

[0042] The CANL port of the first driver control station in the first driver control loop is connected to the CANL port of the second driver control station in the second driver control loop;

[0043] The second control console is connected to the input terminal of the controller U3 and the input terminal of the controller U4 at the same time.

[0044] The output end of the controller U3 is connected to the third motor via a three-phase line;

[0045] The output end of the controller U4 is connected to the fourth motor through a three-phase line.

[0046] The controller U1 includes a DSP1 chip, a motor temperature detection unit, a current and voltage detection unit, and a resolver decoding unit;

[0047] The controller U2 includes a DSP2 chip, a motor temperature detection unit, a current and voltage detection unit, and a resolver decoding unit;

[0048] The controller U3 includes a DSP3 chip, a motor temperature detection unit, a current and voltage detection unit, and a resolver decoding unit;

[0049] The controller U4 includes a DSP5 chip, a motor temperature detection unit, a current and voltage detection unit, and a resolver decoding unit;

[0050] The internal circuit structures of controller U1, controller U2, controller U3 and controller U4 are the same, and no additional templates are required, which reduces costs, increases safety, and facilitates the use of the device.

[0051] The external power supply is 24V DC power supply.

[0052] The first driver's console is provided with a display screen and operation buttons; the second driver's console is also provided with a display screen and operation buttons;

[0053] The display screen and operation buttons in the first control console are of the same model as those in the second control console; users can operate them in the same way, which is simple and convenient, does not require additional learning, and is easy to use.

[0054] The locomotive control system of the present invention includes dual driver control consoles, and the two driver control circuits have the same control strategy. The first driver control console and the second driver control console use a multi-knob switch to control the 24V low-voltage circuit for power-on and CAN communication circuit. The first driver control circuit or the second driver control circuit can be selected through the knob switch to work independently.

[0055] When the driver at the first driver console operates the driver key, contact 1 and contact 2 of the knob switch S1 are connected, the first driver console is energized, and the indicator light of the first driver console lights up, indicating that the first driver console can be used to control the operation of the locomotive, and the first driver control loop control system starts to work. At this time, if the driver at the second driver console operates the driver key, contact 1 and contact 3 of the knob switch S1 are connected, the first driver console loses power, the indicator light of the first driver console goes out, the second driver console is energized, the indicator light of the second driver console lights up, the second driver control loop control system starts to work, and the first driver control loop control system stops working.

[0056] Similarly, when the second driver control loop control system is working, if the driver at the first driver control console operates the driver key, contact 1 and contact 2 of the knob switch S1 are connected, the first driver control console is energized, the second driver control console is de-energized, the first driver control loop control system starts working, and the second driver control loop control system stops working.

[0057] The technical solution adopted by the present invention is: a driver's cab interlocking circuit, including two front and rear driver control circuits and a multi-knob switch S1; contact 1 of the switch S1 is connected to the positive pole of the external power supply, contact 2 is connected to the positive pole of the power input interface of the front driver console, and contact 3 is connected to the positive pole of the power input interface of the rear driver console; contact 4 and contact 5 of the switch S1 are connected to the CAN communication circuits of the front driver console and the rear driver console; the negative poles of the power input interfaces of the front driver console and the rear driver console are connected to the negative pole of the external power supply.

[0058] The present invention realizes the interlocking function of the activation end through hard wire. When the driver's console at one end is activated, the control system at this end can control the operation of the locomotive, and the control system at the other end stops working.

[0059] The present invention realizes mutually exclusive operation of the driver control circuits at both ends through the selective connection of the knob switch S1, that is, when one end is working, the other end automatically stops working. The power-on circuit of the driver control console is controlled by the knob switch. Only when the driver control console in the driver's cab at one end is connected to the power supply by the knob switch, the control system at this end can control the operation of the locomotive. The present invention can effectively realize the power interlocking of the driver's cabs at both ends, and the circuit structure is simple and stable.

[0060] The beneficial effects of the present invention are: the circuit structure is simple and stable, easy to implement and maintain, and the logic interlocking function of the activation end is realized from the hard line, thereby avoiding misoperation.

[0061] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive from any point of view. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention, and any reference numerals in the claims should not be considered as limiting the claims involved.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mine electric locomotive cab interlocking circuit, characterized in that: It includes a first control circuit, a second control circuit and a knob switch S1. The first control circuit is provided with a first control console, a controller U1 and a controller U2. The second control circuit is provided with a second control console, a controller U3 and a controller U4. The 24V+ port of the first control console in the first control loop is connected to the contact 2 of the knob switch S1; the contact 1 of the knob switch S1 is connected to the positive terminal of the external power supply; The 24V- port of the first control console in the first control loop is connected to the negative terminal of the external power supply; The CANH port of the first control console in the first control loop is connected to the contact 5 of the knob switch S1; The first control console is connected to the input terminal of the controller U1 and the input terminal of the controller U2 at the same time. The output end of the controller U1 is connected to the first motor via a three-phase line; The output end of the controller U2 is connected to the second motor via a three-phase line; The 24V+ port of the second control console in the second control loop is connected to the contact 3 of the knob switch S1; The 24V- port of the second control console in the second control loop is connected to the negative terminal of the external power supply; The CANH port of the second control console in the second control loop is connected to the contact 4 of the knob switch S1; The CANL port of the first driver control station in the first driver control loop is connected to the CANL port of the second driver control station in the second driver control loop; The second control console is connected to the input terminal of the controller U3 and the input terminal of the controller U4 at the same time. The output end of the controller U3 is connected to the third motor via a three-phase line; The output end of the controller U4 is connected to the fourth motor through a three-phase line.

2. A mining electric locomotive cab interlocking circuit according to claim 1, characterized in that: The controller U1 includes a DSP1 chip, a motor temperature detection unit, a current and voltage detection unit, and a resolver decoding unit.

3. A mining electric locomotive cab interlocking circuit according to claim 1, characterized in that: The controller U2 includes a DSP2 chip, a motor temperature detection unit, a current and voltage detection unit, and a resolver decoding unit.

4. A mining electric locomotive cab interlocking circuit according to claim 1, characterized in that: The controller U3 includes a DSP3 chip, a motor temperature detection unit, a current and voltage detection unit, and a resolver decoding unit.

5. The interlocking circuit of the driver's cab of a mining electric locomotive according to claim 1 is characterized in that: The controller U4 includes a DSP5 chip, a motor temperature detection unit, a current and voltage detection unit, and a resolver decoding unit.

6. A mining electric locomotive cab interlocking circuit according to any one of claims 2 to 5, characterized in that: The external power supply is a 24V DC power supply.

7. A mining electric locomotive cab interlocking circuit according to claim 6, characterized in that: The first control console is provided with a display screen and operation buttons; the second control console is also provided with a display screen and operation buttons.

8. The interlocking circuit of the driver's cab of a mining electric locomotive according to claim 7 is characterized in that: The display screen and operation buttons in the first control console are of the same model as those in the second control console.

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