AU2010324400A1 - Handle centralized control system for alternating current haulage shuttle car - Google Patents

Abstract

A handle centralized control system for an alternating current traction shuttle car under a coal mine. The centralized control system includes a manipulating portion, a control portion and an electric executing portion. The manipulating portion is arranged with a control handle (1). The control portion is arranged with a controller (4) and a bus isolation module (3). The electric executing portion is arranged with a control relay (KA4) for a traction frequency converter, a control relay (KA1) for an oil pump motor, a control relay (KA2) for corotation of a scraper conveyer, a control relay (KA3) for reversal of the scraper conveyer, control relays (KA5, KA6) for illumination, a control relay (KA7) for an electric bell, a lifting valve (YV1), a falling valve (YV2), turning valves (YV3,YV4), and a frequency converter (2). The handle is connected with the controller through the bus isolation module. The said valves, control relays and frequency converter of the electric executing portion are connected with the controller.

Description

Unitalen ref.: OP1110-08-0337 PCT original HANDLE CENTRALIZED CONTROL SYSTEM FOR ALTERNATING CURRENT HAULAGE SHUTTLE CAR [00011 The present application claims the benefit of priority to Chinese patent application No. 5 200920248925.2 titled "HANDLE CENTRALIZED CONTROL SYSTEM FOR ALTERNATING CURRENT HAULAGE SHUTTLE CAR", filed with Chinese State Intellectual Property Office on November 27, 2009. The entire disclosure thereof is incorporated herein by reference. FIELD OF THE INVENTION 0 10002] The present application relates to a field of roadway excavation, mining and transportation in a coal mine, in particular, to a handle centralized control system which can be applied to an alternating current traction shuttle car under a coal mine. BACKGROUND OF THE INVENTION [00031 At present, in the field of mining and transportation under a coal mine, a shuttle car is an 5 important coal transporting equipment, used together with a continuous coal miner, among the short-wall mechanized mining equipments for medium-thick coal seam. The shuttle car is a car transporting coal for a short distance under a mine, and transporting distance thereof is less than 200 m. The main function of the shutter car is to receive and collect coal mined by a continuous miner in a carriage thereof, then drive back to a feeding crusher and unload the coal through a 0 scraper conveyor in the carriage thereof to a hopper of the crusher, and return back after coal unloading to the continuous coal miner for the next loading of coal. At present, shuttle cars used in the coal mine are mostly imported equipments, and are mostly alternating current traction shuttle cars. This kind of shutter car is complicated in operation, functions of various systems thereof are independent, and operating mechanisms of the shutter car are arranged discretely and 5 thus are difficult to be handled, which needs an experienced operator. SUMMARY OF THE INVENTION [0004] It is provided according to an object of the present application a handle centralized 1 Unitalen ref.: OP111O-08-0337 PCT original control system which can be applied to an alternating current traction shuttle car under a coal mine, so as to solve problems of prior alternating current traction shuttle car that, for example, various devices in the manipulating system of the shutter car have independent functions and are arranged discretely, and the degrees of intelligentization, integration and automation of the shutter cars are low, and so on. [0005] The technical solution of the present application is as follows: [00061 A handle centralized control system for an alternating current traction shuttle car includes a manipulating portion, a control portion and an electrical executing portion. The manipulating portion is provided with a handle for manipulating. The control portion is provided with a car-specified controller and a bus isolation module. The electrical executing portion is provided with a control relay for a traction frequency converter, a control relay for an oil pump motor, a control relay for positive rotation of a scraper conveyor, a control relay for negative rotation of a scraper conveyor, an illumination control relay, a control relay for an electric bell, a raising valve, a lowering valve, steering valves and a frequency converter. The handle is connected to the controller via the bus isolation module, and the valves, the control relays and the frequency converter of the electrical executing portion are connected to the controller. 100071 In the handle centralized control system for an alternating current traction shuttle car according to the present application, the handle is connected to the controller via a CAN bus isolation module. [0008] In the handle centralized control system for an alternating current traction shuttle car according to the present application, the manipulating portion employs an intrinsically safe circuit. 100091 In the handle centralized control system for an alternating current traction shuttle car according to the present application, the lowering valve and the raising valve are flameproof electromagnetic on-off valves used in a mine, and the steering valves are flameproof electromagnetic proportional valves used in a mine. 100101 In the handle centralized control system for an alternating current traction shuttle car according to the present application, the car-specified controller, the bus isolation module, the control relay for the traction frequency converter, the control relay for the oil pump motor, the control relay for positive rotation of the scraper conveyor and the control relay for negative Unitalen ref: OP1110-08-0337 PCT original rotation of the scraper conveyor are mounted within a flameproof control box. [0011] In the handle centralized control system for an alternating current traction shuttle car according to the present application, the car-specified controller is a programmable controller. 100121 The advantageous effects of the present application include: 100131 1. The handle centralized control system for an alternating current traction shuttle car according to the present application can perform a forward control, a backward control, an acceleration control and a deceleration control of the shuttle car by operating the handle forwardly or backwardly, can perform steering control of the shuttle car by rotating the handle right or left, and can also carry out an illumination control, an electric bell control, actuating and stopping controls of the oil pump motor, positive and negative rotation controls of the scraper conveyor, and raising or lowering control of the conveyor, and so on, of the car by pressing buttons on the handle. 100141 2. The handle centralized control system for an alternating current traction shuttle car according to the present application can enhance degrees of automation, intelligentization and integration of the alternating current traction shuttle car, and can achieve automation control of the alternating current traction shuttle car under the mine through corresponding equipments connected thereto, which may lay foundation for transportation intelligentization under the mine. [0015] 3. Compared with traditional manipulating system for a shuttle car under a coal mine, the present application can perform a forward control, a backward control, an acceleration control, a deceleration control and steering controls of the shuttle car simply through a single handle, and can carry out an illumination control, an electric bell control, actuating, stopping, positive rotation and negative rotation controls of the motor of the car by pressing buttons on the handle. The handle centralized control system for an alternating current traction shuttle car according to the present application also has high degree of integration and intelligentization, can be operated easily and conveniently, which abbreviates the problems of the prior manipulating mechanism for the shuttle car that, for example, the manipulating mechanisms thereof are complicated, has independent functions and are arranged discretely, and are difficult to be operated. The centralized control system according to the present application reduces labor intensity of the driver and greatly increases operating efficiency. [00161 4. The present application can be applied to an environment which contains explosive

I

Unitalen ref.: OPll1O-08-0337 PCT original gas under a coal mine. BRIEF DESCRIPTION OF THE DRAWINGS 100171 Figure 1 is a circuit diagram of the present application; and 100181 Figure 2 is a flow chart of the software of the present application. DETAILED DESCRIPTION [00191 As shown in figure 1, the handle centralized control system for an alternating current traction shuttle car according to the present application includes a manipulating portion (a handle), an electrical control portion and an electrical executing portion. The manipulating portion is provided with a handle SOBI (JC6000). The electrical control portion is provided with a CAN bus isolation module U1 (HL-CANIR-AOl) and a programmable controller U2 (SPN-C17). The electrical executing portion is provided with a steering valve (steering left) YV3, a steering valve (steering right) YV4, a raising valve YV1, a lowering valve YV2, seven control relays which are respectively from KA1 to KA7 and a frequency converter U3. The connection relationships among these components are as follows: the handle SOB1 is connected to the controller U2 via the bus isolation module Ul, the steering valve YV3, the steering valve YV4, the raising valve YVl, the lowering valve YV2, the seven control relays and the converter U3 are directly connected to the controller U2, respectively, such that the frequency controller U2 can directly control the valves, the relays and the frequency converter U3. 100201 According to the present application, the relays KA1 to KA7 includes: a control relay KA4 connected to a traction frequency converter, a control relay KA1 connected to an oil pump motor, a positive rotation control relay KA2 connected to a scraper conveyor, a negative rotation control relay KA3 connected to the scraper conveyor, a control relay KA5 connected to a front car lamp, a control relay KA6 connected to a back car lamp, and a control relay KA7 connected to an electric bell. KA5 and KA6 form the illumination-control relay of the shuttle car. [0021] According to the present application, the steering valve YV3 (steering left) and the steering valve YV4 (steering right) connected with the shuttle car are used for steering controls of the shuttle car, the raising valve YV1 (raising) and the lowering valve YV2 (lowering) connected with a head of the scraper conveyor are used for raising and lowering controls of the head of the

A

Unitalen ref: OP1110-08-0337 PCT original conveyor. [00221 According to the present application, the manipulating portion employs an intrinsically safe circuit. [00231 According to the present application, the lowering valve YV2 and the raising valve YVl are flameproof electromagnetic on-off valves used in a mine, and the steering valves YV3 and YV4 are flameproof electromagnetic proportional valves used in a mine. [00241 According to the present application, the car-specific controller U2, the bus isolation module Ul, the control relay KA4 for the traction frequency converter, the control relay KAl for the oil pump motor, the control relay KA2 for positive rotation of the scraper conveyor and the control relay KA3 for negative rotation of the scraper conveyor are all mounted within a flameproof control box. [00251 The electrical control process of the handle centralized control system for an alternating current traction shuttle car according to the present application is as follows: [00261 The electrical control portion employs the controller U2 to execute a series of important operations, for example, signal collecting, analyzing, calculating and processing, and so on. The handle mounted on the intrinsically safe manipulating box collects various information from outside at real-time. An offset that the handle SOB1 is moved forwardly or backwardly is converted into a digital quantity ranging from 0 to 1000, and a group of on-off quantities are used to distinguish a forward action from a backward action of the handle SOB 1. An offset that the handle SOB 1 is rotated left or right is converted into a group of digital quantities ranging from 0 to 1000, and another group of on-off quantities are used to distinguish a left rotation from a right rotation of the handle SOB 1. Button information on the handle SOB 1 is converted into another group of on-off quantities, and the converted information is communicated to the controller U2 via the CAN bus. The controller U2 analyzes, calculates and processes the received date information. The controller U2 converts the digital quantity converted from the offset that the handle SOB1 is moved forwardly or backwardly into a frequency signal that can be received by the frequency converter, and transmits the frequency signal to the frequency converter via the CAN bus, such that a speed of the shuttle car is controlled by regulating a displacement of the handle SOB1. The controller U2 further converts a digital quantity signal converted from an offset that the handle SOB 1 is rotated left or right into a PWM signal which can control an Unitalen ref.: OP1110-08-0337 PCT original opening degree of the steering valve, and actuates actions of output ports of the controller based on the on-off quantity signals, and controls energization and/or deenergization of coils of the relays, so as to control the output circuits, and thus achieves the forward control, the backward control, the acceleration control, the deceleration control and the steering controls of the shuttle car. It also can achieve the illumination control, the actuating, stopping, positive rotation and negative rotation controls of the motor, the raising or lowering control of the conveyor, and so on, of the car by operating buttons on the handle SOB 1. 100271 As shown in figure 2, the flow chart of the software of the present application is as follows: 100281 When the system is energized, the controller U2 firstly initializes various input ports, output ports and the CAN bus communicating ports. After completing initialization, the whole system is self-checked and then receives data information from the handle SOB1 through the CAN bus, and analyzes and calculates the received data. Further, the controller U2 controls actions of output ports based on the input information from the handle SOB1, thus achieves the steering controls, the illumination control, the electric bell control, the actuating and stopping controls of the oil pump motor, the positive rotation and negative rotation controls of the scraper conveyor, and the raising or lowering control of the conveyor, and so on, of the car. Meanwhile, the controller U2 transmits corresponding data information to the frequency converter via the CAN bus, and thus achieves the forward control, the backward control, the acceleration control and the deceleration control of the shuttle car. [0029] As a result, the handle centralized control system for an alternating current traction shuttle car according to the present application can perform various controls to the shuttle car simply by the handle. The system is practical and is easy to operate, and has high degrees of integration and intelligentization, which reduces labor intensity of the driver and greatly increases operating efficiency.

Claims (6)

1. A handle centralized control system for an alternating current traction shuttle car, characterized in that, the handle centralized control system comprises a manipulating portion, a control portion and an electrical executing portion, wherein the manipulating portion is provided with a handle; the control portion is provided with a controller and a bus isolation module; the electrical executing portion is provided with a control relay for a traction frequency converter, a control relay for an oil pump motor, a control relay for positive rotation of a scraper conveyor, a control relay for negative rotation of the scraper conveyor, an illumination control relay, a control relay for an electric bell, a raising valve, a lowering valve, steering valves and a frequency converter; and the handle is connected to the controller via the bus isolation module, and the raising valve, the lowering valve, the steering valves, the control relays and the frequency converter of the electrical executing portion are connected to the controller, respectively.

2. The handle centralized control system for an alternating current traction shuttle car according to claim 1, wherein the handle is connected to the controller via a CAN bus isolation module.

3. The handle centralized control system for an alternating current traction shuttle car according to claim 1, wherein the manipulating portion employs an intrinsically safe circuit.

4. The handle centralized control system for an alternating current traction shuttle car according to claim 1, wherein the lowering valve and the raising valve are flameproof electromagnetic on-off valves used in a mine, and the steering valves are flameproof electromagnetic proportional valves used in a mine.

5. The handle centralized control system for an alternating current traction shuttle car according to claim 1, wherein the controller, the bus isolation module, the control relay for the traction frequency converter, the control relay for the oil pump motor, the control relay for positive rotation of the scraper conveyor and the control relay for negative rotation of the scraper Unitalen ref: OP1110-08-0337 PCT original conveyor are mounted within a flameproof control box.

6. The handle centralized control system for an alternating current traction shuttle car according to claim 1, wherein the controller is a programmable controller.