Hydraulic support control system with standardized configuration

Abstract

The invention relates to the technical field of coal mine intelligent comprehensive mechanical coal mining, in particular to a standardized configuration hydraulic support control system which comprises a centralized control center, an end control station and a plurality of control units, the centralized control center is connected with the end control station through an optical fiber, and the centralized control center is in control connection with the control units through the end control station. The adjacent control units are connected in series, the end control station represents the whole working face and provides external control for a working face support to execute actions and obtain support data, the end control station is of a looped network structure, and the data can be transmitted in two directions. Each hydraulic support is provided with an independent power supply, an independent controller and an independent sensor, the ratio of the controller to the power supply is 1: 1, and the problems of voltage fluctuation, current interference and the like possibly occurring when multiple supports share the power supply are solved; and the independent power supply can provide stable voltage and current according to specific requirements of a single hydraulic support, so that normal operation of each device in the electric control system is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent comprehensive mechanized coal mining in coal mines, and in particular to a hydraulic support control system with standardized configuration. Background Art

[0002] In recent years, with the development of economy, the demand for coal has continued to grow. In order to improve the efficiency and safety of coal mining, intelligent hydraulic support electro-hydraulic control system has emerged. The support electronic control system can realize the automatic control of hydraulic support, improve the control accuracy and operation efficiency, reduce the labor intensity, and at the same time, the support electronic control system can realize the real-time monitoring and control of hydraulic support, improve the reliability and safety of support, and reduce the occurrence of accidents. With the continuous development of electronic technology and automation technology, the intelligence level of support electronic control system is constantly improving, and the system-related equipment tends to be integrated and simplified.

[0003] The current hydraulic support electronic control system is composed of a variety of devices, such as controllers, sensors (pressure sensors, displacement sensors, inclination sensors, etc.), solenoid valve drivers, electro-hydraulic control reversing valves, DC regulated power supplies, power adapters, isolation couplers, signal converters, etc. The numerous hardware devices not only increase the cost of the system, but also make the installation, debugging and maintenance of the system cumbersome and complicated. For example, during the installation process, each device needs to be accurately wired and fixed in position, which consumes a lot of time and manpower; the hardware devices need to be connected through a variety of cables, and the layout and connection methods of these devices are relatively complex, which is prone to connection errors or line failures; moreover, the complex connection lines also increase the difficulty of troubleshooting the system. Once a problem occurs, it is difficult to quickly and accurately find the fault point; a large number of hardware devices and their connection lines need to occupy a large space, which is a big problem in the limited space environment underground; too many devices and lines will affect the operating space and walking channels of underground workers, and may also increase safety hazards.

[0004] The normal operation of hydraulic supports depends on the stable power supply of the electronic control system. At present, the power supply configuration of the electronic control system of hydraulic supports is mainly in the form of grouped independent power supplies, that is, multiple hydraulic supports are divided into several groups, each group is equipped with an independent power supply. The ratio of power supply to controller in the common support electro-hydraulic control system is 1:6, 1:8, etc. Due to the different power supplies between different groups, the reference zero potential of the signal ground is different. Couplers need to be added between racks to ensure the normal transmission of signals between racks. With the continuous development of the electronic control system of hydraulic supports in the future, its functions will become increasingly complex and diversified. At the same time, the continuous strengthening of intelligent functions, such as adaptive control, remote monitoring and diagnosis, also depends on reliable power supply. Due to their limited capacity, grouped independent power supplies may not be able to meet the power requirements of many new equipment and functions. In the future, coal mining operations will pursue higher efficiency, and the action speed and response frequency of hydraulic supports may increase. This means that the actuators of the hydraulic support, such as the electro-hydraulic control valve and motor, need more power to ensure fast and accurate action, while the grouped independent power supply may not be able to meet the peak power requirements of these actuators during efficient operation due to its relatively small power supply capacity, thereby affecting the working efficiency of the hydraulic support. Summary of the invention

[0005] Based on the above-mentioned problems currently existing in the current hydraulic support electronic control system, the present invention proposes a hydraulic support control system with standardized configuration, each hydraulic support has its own independent power supply, controller and sensor, and the controller and power supply are matched in a 1:1 ratio, avoiding problems such as voltage fluctuation and current interference that may occur when multiple supports share a power supply.

[0006] The solution adopted by the present invention to solve the technical problem is: a hydraulic support control system with standardized configuration, including a centralized control center, an end control station and multiple control units, the centralized control center and the end control station are connected by optical fiber, the centralized control center is controlled and connected with the control unit through the end control station, and adjacent control units are connected in series, the end control station represents the entire working surface, provides external control of the working surface support to execute actions and obtain support data, the end control station adopts a ring network structure, and data can be transmitted in two directions; A single control unit includes a power supply and a hydraulic support electro-hydraulic control device controller. The signal input end of the power supply is communicatively connected to the end control station. The hydraulic support electro-hydraulic control device controller is connected to the power output end through the device peripheral port to obtain the working power supply. The power supply is the main node device of the entire working face trunk line, responsible for the basic network communication of the entire working face, and provides data link communication for the terminal equipment; the hydraulic support electro-hydraulic control device controller has multiple interfaces and can be connected to a variety of equipment. The hydraulic support electro-hydraulic control device controller serves as a control terminal and is used to control the support operation and collect various sensor data of the support; The power output end is also connected to a voice terminal, a PTZ camera, and a protocol converter through a peripheral interface; the hydraulic support electro-hydraulic control device controller is controlled and connected to a solenoid valve driver, an information expander, a signal light, a coal mining positioning base station, a wireless remote controller, and various types of sensors; The power output end is also connected to a voice terminal, a pan-tilt camera, and a protocol converter through a peripheral interface; the hydraulic support electro-hydraulic control device controller is controlled and connected to a solenoid valve, an information expander, a signal light, a coal mining positioning base station, a wireless remote control, and various types of sensors.

[0007] Furthermore, the various types of sensors in the control unit include displacement sensors, height sensors, wireless pressure sensors, wireless inclination sensors, and wireless distance sensors, which are used to monitor mine environmental parameters or support postures.

[0008] Furthermore, the wireless remote control in the control unit communicates wirelessly with the hydraulic support electro-hydraulic control device controller, the wireless pressure sensor, wireless inclination sensor, and wireless ranging sensor are wirelessly connected to the hydraulic support electro-hydraulic control device controller, and other products in the control unit connect the peripheral interfaces of the two products through standard cables.

[0009] Furthermore, the terminal control station adopts an explosion-proof and intrinsically safe terminal control station, which is used to manage the scheduling of the entire working face support. It has a three-layer routing function, isolates the working face gateway from the external network, represents the entire working face, and provides external control of the working face support to execute actions and obtain support data.

[0010] Furthermore, the wireless remote controller controls various actions of the hydraulic support through corresponding buttons within a certain distance and displays the position and posture of the support.

[0011] Furthermore, the signal light has an audible and visual alarm function, which is used to indicate the working status of the device, and the information received from the wireless sensor is converted into a wired network and sent to the control terminal.

[0012] Furthermore, the coal mining positioning base station is connected to a coal mining machine positioning tag via UWB communication. The coal mining machine positioning tag has UWB tag function and infrared transmitter function, and communicates and configures with the coal mining machine and performs data processing.

[0013] Furthermore, the control system also includes automatic control function, remote monitoring function, fault diagnosis function and data recording and analysis function.

[0014] Beneficial effects of the present invention: standardized configuration of single-bracket unit equipment is convenient for on-site matching, and there is no need to consider the proportional relationship between the power supply and the controller. The wiring between the equipment is consistent across the entire working surface, which is convenient for the installation and layout of on-site equipment; each hydraulic support has its own independent power supply, controller and sensor, and the controller and power supply are matched in a 1:1 ratio to avoid voltage fluctuations, current interference and other problems that may occur when multiple supports share a power supply; and the independent power supply can provide stable voltage and current according to the specific needs of a single hydraulic support to ensure the normal operation of each device in the electric control system; the increase in the number of power supplies improves the power supply capacity of the system, avoids the problem of equipment offline caused by the current shortage of power supply capacity, and ensures the smooth operation of the system; the improvement in power supply capacity also provides support for the expansion of intelligent equipment on the coal mining working face; the signals between frames all use isolated signals, and the system configuration reduces the coupler product, reducing the complexity of the system; and the working face network ring network structure, data can be transmitted in two directions, if a certain section of the line in the network fails, the data can be automatically transmitted in the opposite direction, and will not cause the entire network to be paralyzed, and the structural design of the ring network can reduce the delay in data transmission to ensure that the control instructions can reach the execution device in time. Compared with the existing bracket electric control system, the system equipment in the present invention is highlighted with integration, a single device integrates the functions of two to three existing devices, simplifies the types of main equipment, and avoids the problem of system instability caused by missing installation of a certain device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a hydraulic support control system of the present invention; Figure 2 is a system diagram of a single control unit of the present invention; Figure 3 This is a general diagram of the hydraulic support control system of the present invention. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] See also Figure 1-3 The present invention provides a technical solution for a hydraulic support control system with standardized configuration, aiming to provide an efficient and reliable automation control solution for hydraulic supports in underground coal mines, thereby improving the safety and production efficiency of coal mining operations. The system adopts advanced sensor technology, communication technology and control algorithms to realize remote monitoring and automatic operation of hydraulic supports. Example

[0018] like Figure 1As shown, the hydraulic support control system includes a centralized control center, an end control station and multiple control units. The centralized control center is connected to the end control station through optical fiber. The centralized control center is controlled and connected to the control unit through the end control station, and adjacent control units are connected in series. The end control station represents the entire working face and provides external control of the entire working face support to execute actions and obtain support data. The working face network of the end control station adopts a ring network structure, and data can be transmitted in two directions through optical fiber.

[0019] A single control unit such as Figure 2 As shown, it mainly includes power supply, hydraulic support electro-hydraulic control device controller, voice terminal, pan-tilt camera, protocol converter, solenoid valve, information expander, signal light, coal mining positioning base station, coal mining machine positioning tag, wireless remote control and various sensors. The various types of sensors in the control unit include displacement sensor, height sensor, wireless pressure sensor, wireless inclination sensor, wireless distance sensor, etc. Displacement sensor, pressure sensor, inclination sensor, height sensor, distance sensor and other sensors are used to monitor mine environmental parameters (temperature, humidity, gas concentration) or support posture (inclination, displacement, pressure), providing information support for safe and efficient production in mines.

[0020] The signal input end of the power supply and the hydraulic support electro-hydraulic control device controller power supply is connected to the terminal control station for communication, and the hydraulic support electro-hydraulic control device controller is connected to the power output end through the peripheral port of the device to obtain the working power supply. The power supply adopts a flameproof and intrinsically safe power supply, which represents the main node equipment of the entire working face network trunk line. It is the basic node of the working face equipment, responsible for the basic network communication of the entire working face, and provides data link communication for the terminal equipment. Each hydraulic support electro-hydraulic control device controller is connected to the power supply through the peripheral port of the device to obtain the working power supply; each power supply can also be connected to a voice terminal, a mining intrinsically safe pan-tilt camera, and a protocol converter through the peripheral interface of the power supply itself.

[0021] The controller of the electro-hydraulic control device of the hydraulic support is a control terminal used to control the operation of the support and collect the data of various sensors of the support. It is a terminal control device that integrates support control, data collection of sensor equipment such as pressure and tilt sensors, and mobile phone control. The controller has a total of 12 interfaces and can connect 12 types of equipment. Among them, the information expander connected to it can also expand the connection to CAN communication equipment, and the tilt sensors connected to the controller can also be connected in multiple stages in series.

[0022] The end control station is a flameproof and intrinsically safe end control station, which manages the dispatching equipment of the entire working face support. It has a three-layer routing function, isolates the working face network from the external network, represents the entire working face, and provides external control of the working face support to execute actions and obtain support data. The solenoid valve driver adopts a mining intrinsically safe solenoid valve driver, which is responsible for driving the solenoid pilot valve, and then drives the column or cylinder connected to the main valve to execute actions.

[0023] The wireless remote controller uses a mine intrinsically safe remote controller, which is a remote control device of the controller. It is connected to the hydraulic support electro-hydraulic control device controller wirelessly to communicate wirelessly. It can control the various actions of the hydraulic support through the corresponding buttons within a certain distance and display the position of the support. The signal light is a mine intrinsically safe signal light. It is a wireless access device with sound and light alarm function, indicating the working status of the equipment, and converting the information received from the wireless sensor into a wired network and sending it to the control terminal. The coal mining positioning base station is connected to the coal mining machine positioning tag. The coal mining machine positioning base station and the coal mining machine positioning tag communicate directly through UWB. The coal mining machine positioning tag has UWB tag function and infrared transmitter function. It can detect the distance, angle and active infrared signal of the UWB tag, report the detection data, and the coal mining positioning base station communicates and configures with the coal mining machine, and performs data processing. The wireless pressure sensor, wireless inclination sensor, and wireless distance sensor are connected to the control machine wirelessly. Other products in the control unit are connected to the peripheral interfaces of the two products through standard cables.

[0024] The hydraulic support control system also includes: a mine-use intrinsically safe information expander, a mine-use intrinsically safe keyboard, a mine-use intrinsically safe proximity sensor, a mine-use intrinsically safe laser ranging sensor, and an infrared transmitter.

[0025] Mining intrinsically safe proximity sensor: This product is mainly composed of a sensor housing and a non-contact magnetic ring (with a permanent magnet inside) sleeved on a measuring rod. When the sensor is working, the magnetic ring uses the tunnel magnetoresistance effect of its magnetic multilayer film material to sense the magnetic field during movement, thereby causing a linear change in the output voltage.

[0026] Infrared transmitter: The mining intrinsically safe infrared transmitter is installed on the coal mining machine, reciprocates with the coal mining machine, and continuously emits infrared signals to the outside; this signal is received by the controller with infrared receiving function installed on the hydraulic support.

[0027] In the above system, each hydraulic support has its own independent power supply, controller and sensor, and the ratio of controller to power supply is 1:1, which avoids the problems of voltage fluctuation and current interference that may occur when multiple supports share power supply. The independent power supply can provide stable voltage and current according to the specific needs of a single hydraulic support to ensure the normal operation of each device in the electric control system. The increase in the number of power supplies brings more sufficient power supply capacity, provides basic power supply support for the access of new equipment, and improves the scalability of the system. The signals between frames are all isolated signals, and the system configuration reduces the coupler product, reducing the complexity of the system. For example, when the hydraulic support performs precise motion control, such as fine-tuning the support height of the column, the stable power supply can enable the electro-hydraulic control valve to accurately control the flow of hydraulic oil, thereby achieving precise movement and improving the support effect of the hydraulic support on the roof. At the same time, the standardized configuration can meet the normal operation of the basic functions of the electric control system, and avoid the risk of system instability caused by the omission of a certain device when laying out the equipment on the working face, such as the power supply instability and bus communication abnormality caused by the omission of the isolation coupler in the bracket electric control system with grouped independent power supply.

[0028] Embodiment 2: A hydraulic support control system with standardized configuration, having the following functions: Automatic control function: According to the coal mining process requirements, the hydraulic support's lifting, lowering, frame moving, pushing and sliding actions are automatically controlled to realize the automation of coal mining operations; the support's working status and environmental parameters are monitored in real time through sensors, and the support's action parameters are automatically adjusted to ensure the support's safe and stable operation.

[0029] Remote monitoring function: Operators can remotely monitor the working status, sensor data, and alarm information of the hydraulic support through the human-machine interface. Supporting remote operation function, operators can manually control the hydraulic support in the control room to improve the safety and convenience of operation.

[0030] Fault diagnosis function: The system can automatically detect faults in the hydraulic support control unit and display fault information and alarm prompts through the human-machine interface.

[0031] Data recording and analysis function: record the working status, sensor data, operation records and other information of the hydraulic support to provide data support for equipment maintenance and production management; analyze the recorded data to optimize the control algorithm and operating parameters of the support to improve the performance and reliability of the system.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic support control system with standardized configuration, characterized in that: It includes a centralized control center, an end control station and multiple control units. The centralized control center and the end control station are connected by optical fiber. The centralized control center is controlled and connected with the control unit through the end control station, and adjacent control units are connected in series. The end control station represents the entire working face and provides external control of the working face bracket execution action and obtains bracket data. The end control station adopts a ring network structure, and data can be transmitted in two directions; A single control unit includes a power supply and a hydraulic support electro-hydraulic control device controller. The signal input end of the power supply is communicatively connected to the end control station. The hydraulic support electro-hydraulic control device controller is connected to the power output end through the device peripheral port to obtain the working power supply. The power supply is the main node device of the entire working face trunk line, responsible for the basic network communication of the entire working face, and provides data link communication for the terminal equipment; the hydraulic support electro-hydraulic control device controller has multiple interfaces and can be connected to a variety of equipment. The hydraulic support electro-hydraulic control device controller serves as a control terminal and is used to control the support operation and collect various sensor data of the support; The power output end is also connected to a voice terminal, a pan-tilt camera, and a protocol converter through a peripheral interface; the hydraulic support electro-hydraulic control device controller is controlled and connected to a solenoid valve driver, an information expander, a signal light, a coal mining positioning base station, a wireless remote control, and various types of sensors.

2. A hydraulic support control system with standardized configuration according to claim 1, characterized in that: The various types of sensors in the control unit include displacement sensors, height sensors, wireless pressure sensors, wireless inclination sensors, and wireless distance sensors, which are used to monitor mine environmental parameters or support postures.

3. A hydraulic support control system with standardized configuration according to claim 2, characterized in that: The wireless remote control in the control unit communicates wirelessly with the hydraulic support electro-hydraulic control device controller, the wireless pressure sensor, wireless inclination sensor, and wireless ranging sensor are connected to the hydraulic support electro-hydraulic control device controller wirelessly, and other products in the control unit connect the peripheral interfaces of the two products through standard cables.

4. A hydraulic support control system with standardized configuration according to claim 1, characterized in that: The terminal control station adopts an explosion-proof and intrinsically safe terminal control station, which is used to manage the scheduling of the entire working face support. It has a three-layer routing function, isolates the working face gateway from the external network, represents the entire working face, and provides external control of the working face support to execute actions and obtain support data.

5. A hydraulic support control system with standardized configuration according to claim 3, characterized in that: The wireless remote controller controls various actions of the hydraulic support through corresponding buttons within a certain distance and displays the position and posture of the support.

6. A hydraulic support control system with standardized configuration according to claim 1, characterized in that: The signal light has an audible and visual alarm function, is used to indicate the working status of the equipment, and receives information from the wireless sensor, converts it into a wired network and sends it to the control terminal.

7. A hydraulic support control system with standardized configuration according to claim 1, characterized in that: The coal mining positioning base station is connected to the coal mining machine positioning tag through UWB communication. The coal mining machine positioning tag has UWB tag function and infrared transmitter function, and communicates and configures with the coal mining machine and performs data processing.

8. A hydraulic support control system with standardized configuration according to any one of claims 1 to 7, characterized in that: The control system also includes automatic control function, remote monitoring function, fault diagnosis function and data recording and analysis function.

Images