Mining hydraulic support withdrawing monitoring system

Abstract

The utility model discloses a mining hydraulic support withdrawing monitoring system. The mining hydraulic support withdrawing monitoring system comprises a first monitoring system and a second monitoring system, wherein the first monitoring system is arranged on a hydraulic support and used for monitoring the state of the hydraulic support in the withdrawing process of the hydraulic support; the second monitoring system is arranged on a worker and used for monitoring the state of the worker in the withdrawing process of the hydraulic support; the first monitoring system is connected with the second monitoring system and used for monitoring the operation state of the first monitoring system and the operation state of the second monitoring system; and the third monitoring system is used for monitoring the working area in the withdrawing process of the hydraulic support. According to the mining hydraulic support withdrawing monitoring system provided by the utility model, each withdrawing controller reports the state information of each support to the monitoring host by adopting a layered network topology structure, and the monitoring host performs remote centralized control on the premise of mastering various state data on site, so that the safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic support control technology for coal mining equipment, and specifically to a hydraulic support retraction monitoring system. Background Technology

[0002] During the current retreat of equipment in a fully mechanized mining face, workers need to remove the hydraulic supports to be withdrawn from the goaf and move them to a new working face or up to the surface for maintenance. Since the supports and other equipment need to be moved to other areas during retreat, using the original electrical control system would require frequent modifications to the power wiring. This necessitates simultaneously withdrawing the supports and dismantling the electrical control system, resulting in extremely low efficiency. Furthermore, the retreat area has a large open roof area with low support levels, leading to a high risk factor. Therefore, most current retreat operation plans require providing a retreat controller and adapter socket to connect to the solenoid valve actuator of the original electrical control system, and using a remote control to connect to the retreat controller for point-to-point remote control of the supports.

[0003] However, current point-to-point remote control has the following drawbacks in field applications:

[0004] 1. During the withdrawal operation, it is impossible to obtain on-site status information in a timely manner, posing a significant personal safety hazard.

[0005] Due to the complex environment and numerous pieces of equipment in underground coal mines, incomplete support at the working face and severe roof damage during retreat create many blind spots. Personnel observation alone cannot provide timely information on the status of various locations, hindering timely response to abnormal situations and increasing the risk of accidents. While increasing the number of observers can improve on-site feedback, the numerous and constantly changing hazardous areas mean that untimely communication can lead to unforeseen dangers. Furthermore, it's impossible to completely prevent personnel from entering risk areas, resulting in low work efficiency. In point-to-point operations, the remote control can only acquire the support status of the controlled support, failing to provide timely information on the support status of adjacent supports, posing a safety risk.

[0006] 2. Poor compatibility of electrical control devices. Because the hydraulic support electrical control devices used in different fully mechanized mining faces are from different manufacturers and have different models, on-site use requires adaptation to each model. This necessitates providing different adaptation protocols, different functional interfaces, and different connection sockets, as well as preparing various accessories. On-site use requires replacement according to different electrical control devices, resulting in low efficiency, high cost, and inconvenience for material management.

[0007] Application number CN202211575768.2 discloses a control system and method for hydraulic supports used in coal mine goaf retention, including multiple unit-type hydraulic supports. Each hydraulic support is equipped with a support controller, an electro-hydraulic directional valve, a pressure sensor installed on the hydraulic support column, and tilt sensors installed on the top beam and base of the hydraulic support respectively. The multiple unit-type hydraulic supports are equipped with a DC regulated power supply and a power adapter. The DC regulated power supply supplies power to the support controller of the multiple hydraulic supports on one side through the power adapter. An underground monitoring computer and display are installed in the fixed chamber. An aboveground control and management platform is installed on the surface. A certain number of remote controllers are configured. Summary of the Invention

[0008] This invention aims to overcome the technical problem that existing hydraulic support retraction processes use point-to-point operations, which cannot be centrally controlled and cannot obtain on-site status information in a timely manner, thus posing significant safety hazards. It provides a mining hydraulic support retraction monitoring system that employs a hierarchical network topology to enable each retraction controller to report the status information of each support to the monitoring host. The monitoring host, having access to various on-site status data, performs remote centralized control, thereby improving safety.

[0009] This utility model provides a monitoring system for the retraction of hydraulic supports in mines, comprising:

[0010] First monitoring system: installed on the hydraulic support, used to monitor the status of the hydraulic support during the retraction process;

[0011] The second monitoring system is installed on the workers and is used to monitor their status during the retraction of the hydraulic support.

[0012] The third monitoring system is connected to the first and second monitoring systems and is used to monitor the operating status of the first and second monitoring systems, and to monitor the working area during the retraction of the hydraulic support.

[0013] The first monitoring system includes:

[0014] Wireless sensing system: installed on the hydraulic support, used to monitor the status information of the hydraulic support in real time, and to transmit the status information to the retraction controller;

[0015] Retraction controller: Installed on the hydraulic support, corresponding one-to-one with the hydraulic support, used to receive status information transmitted by the wireless sensing system, to receive distance information transmitted by the positioning tag, to generate alarm information based on the distance information, to transmit the alarm information to the remote controller, to receive operation instructions transmitted by the remote controller, and to transmit status information and monitoring data information to the wireless base station.

[0016] The second monitoring system includes:

[0017] Location tag: It is worn by the staff and is wirelessly connected to the retraction controller to transmit distance information to the retraction controller;

[0018] Remote control: Used to send commands to the retraction controller and to receive alarm information transmitted by the retraction controller;

[0019] The third monitoring system includes:

[0020] Wireless base station: Connected to the pullback controller, used to receive status information and monitoring data transmitted by the pullback controller;

[0021] Monitoring host: Connected to the wireless base station, used to obtain status information and monitoring data.

[0022] The mining hydraulic support retraction monitoring system of this utility model, as a preferred embodiment, includes a wireless sensing system comprising:

[0023] Wireless tilt sensor: Installed on the base, top beam and shield beam of the hydraulic support, it is used to detect the tilt status of the hydraulic support and generate tilt status information;

[0024] Wireless pressure sensor: Installed on the column of the hydraulic support, it is used to detect the hydraulic pressure in the lower chamber of the column and generate pressure status information.

[0025] The mining hydraulic support retraction monitoring system described in this utility model, as a preferred embodiment, includes tilt angle status information and pressure status information in its status information.

[0026] The mining hydraulic support retraction monitoring system of this utility model, in a preferred embodiment, includes a retraction controller comprising a main control unit, a power supply unit connected to the main control unit for supplying power to the main control unit, a wireless module connected to the main control unit for communicating with a wireless sensing system and a remote controller, an audible and visual alarm unit connected to the main control unit for alarm display, and a drive communication unit connected to the main control unit.

[0027] In the preferred embodiment of the mining hydraulic support retraction monitoring system described in this utility model, the power supply unit is a detachable power supply.

[0028] The mining hydraulic support retraction monitoring system of this utility model, as a preferred embodiment, includes a wireless module comprising a first wireless module connected to a wireless tilt sensor, a second wireless module connected to a wireless pressure sensor, a third wireless module connected to a remote controller, and a fourth wireless module connected to a wireless base station vector.

[0029] The first wireless module uses one or more of the following communication methods: Bluetooth wireless communication, LoRa wireless communication, and ZigBee wireless communication.

[0030] The second wireless module uses RFID wireless communication.

[0031] The third wireless module uses UWB wireless communication.

[0032] The fourth wireless module uses WiFi communication.

[0033] In a preferred embodiment of the mining hydraulic support retraction monitoring system described in this utility model, the first monitoring system further includes a solenoid valve driver connected to a drive communication unit via a cable. The drive communication unit is equipped with CAN, RS458, and RS232 communication interfaces.

[0034] In a preferred embodiment of the mining hydraulic support retraction monitoring system described in this utility model, the remote control includes a remote control mobile phone.

[0035] In a preferred embodiment of the mining hydraulic support retraction monitoring system described in this utility model, the second monitoring system further includes a wireless camera. The wireless camera is connected to a wireless base station via WIFI and is used to transmit the real-time acquired video data to the monitoring host and remote control.

[0036] In a preferred embodiment of the mining hydraulic support retraction monitoring system described in this utility model, the third monitoring system further includes a comprehensive power supply box connected to the winch motor. This comprehensive power supply box is connected to an underground intercom via an audio cable for voice data transmission. An AI camera is installed in the winch control area to report video information from the winch control area to the monitoring host. The monitoring host, having acquired various status data from the site, performs remote centralized control.

[0037] In use, this invention allows workers to retract the hydraulic support via a remote control app on their mobile phones. Upon receiving the retraction command, the retraction controller retracts the hydraulic support and collects real-time tilt and pressure information from wireless tilt sensors and pressure sensors. Based on these information, the controller adjusts the retraction status of the hydraulic support. The controller also receives distance information from positioning tags and calculates the distance to personnel using Time-of-Flight (TOF) technology. When the distance falls below a set threshold, the controller triggers an approach alarm. A wireless camera is connected to a mobile power supply box via a power cable and connected to a wireless base station via Wi-Fi to upload video data to the monitoring host and the remote control phone. Wireless base stations connect via Wi-Fi to transmit equipment status information and monitoring data from the retraction area to the monitoring host. The integrated power supply box provides controller output points connected to the winch motor for start / stop control and provides audio cables for connecting to the underground intercom for voice data transmission. The monitoring host connects to the wireless base stations via communication cables to communicate with them and obtain status information of the retracted support area.

[0038] This utility model has the following advantages:

[0039] (1) This utility model enables remote centralized control through a monitoring host and on-site status monitoring through various sensors and AI cameras, which can reduce the number of on-site personnel, improve the safety of operation, and improve the feedback speed when abnormal problems occur on-site.

[0040] (2) The retraction controller of this utility model is connected to external devices wirelessly, which reduces the cable connection between each support, reduces the damage to the cables caused by coal falling and support movement, significantly improves the service life of the system, enhances the reliability of the system, and reduces the cost of product use.

[0041] (3) By providing personnel approach alarm protection for the retraction working face and personnel intrusion alarm protection for the winch retraction area, this utility model can improve the safety of personnel operation and protect the personal safety of on-site workers.

[0042] (4) The retraction controller of this utility model can simplify the types of field equipment, reduce the complexity of operation, and improve work efficiency by providing a variety of adapter interfaces;

[0043] (5) The retraction controller of this utility model integrates a battery unit that can be detached on site. The battery is connected to other parts through a quick-connect cable, making on-site operation simple and maintenance convenient. When the battery is low on voltage, it can be taken away for charging simply by removing the battery unit, reducing the labor intensity of the staff.

[0044] (6) The system control of this utility model integrates the functions of the retraction control system, voice transmission function, and video monitoring function. Wireless signal transmission is used in the retraction area, while wired signal transmission is used in the winch controller area and the centralized control area. This greatly simplifies the system structure, optimizes the convenience of system connection, and improves the applicability of system application. Attached Figure Description

[0045] Figure 1 This is a diagram showing the components of a monitoring system for the retraction of a mining hydraulic support.

[0046] Figure 2 This is a structural diagram of the retraction controller of a mining hydraulic support retraction monitoring system. Detailed Implementation

[0047] Example 1

[0048] like Figure 1 As shown, this utility model provides a monitoring system for the retraction of a mining hydraulic support, comprising:

[0049] First monitoring system: Installed on the hydraulic support, used to monitor the status of the hydraulic support during its retraction process; the first monitoring system includes:

[0050] Wireless sensing system: Installed on the hydraulic support, it is used to monitor the status information of the hydraulic support in real time and transmit the status information to the retraction controller; the status information includes tilt angle status information and pressure status information; the wireless sensing system includes:

[0051] Wireless tilt sensor: Installed on the base, top beam and shield beam of the hydraulic support, it is used to detect the tilt status of the hydraulic support and generate tilt status information;

[0052] Wireless pressure sensor: Installed on the column of the hydraulic support, it is used to detect the hydraulic pressure in the lower chamber of the column and generate pressure status information;

[0053] Retraction Controller: Mounted on the hydraulic supports, corresponding one-to-one with each support, it receives status information from the wireless sensor system, distance information from the positioning tags, generates alarm information based on the distance information, transmits the alarm information to the remote controller, receives operation commands from the remote controller, and transmits status information and monitoring data to the wireless base station; for example... Figure 2As shown, the retraction controller includes a main control unit, a power supply unit connected to the main control unit for powering the main control unit, a wireless module connected to the main control unit for communicating with the wireless sensing system and remote control, an audible and visual alarm unit connected to the main control unit for alarm display, and a drive communication unit connected to the main control unit; the power supply unit is a detachable power supply; the wireless module includes a first wireless module connected to a wireless tilt sensor, a second wireless module connected to a wireless pressure sensor, a third wireless module connected to the remote control, and a fourth wireless module connected to a wireless base station vector; the first wireless module's communication method is one or more of the following: Bluetooth wireless communication, LoRa wireless communication, ZigBee wireless communication; the second wireless module's communication method is RFID wireless communication; the third wireless module's communication method is UWB wireless communication; and the fourth wireless module's communication method is WiFi communication; the drive communication unit is equipped with CAN, RS458, and RS232 communication interfaces;

[0054] Solenoid valve actuator: connected to the drive communication unit via cable;

[0055] Second monitoring system: Installed on the worker's person, used to monitor the worker's status during the retraction of the hydraulic support; the second monitoring system includes:

[0056] Location tag: It is worn by the staff and is wirelessly connected to the retraction controller to transmit distance information to the retraction controller;

[0057] Remote control: Used to send commands to the retraction controller and to receive alarm information transmitted by the retraction controller; the remote control includes a remote control mobile phone with a retraction control APP on the mobile phone. The staff can use the retraction control APP on the remote control mobile phone to perform the retraction operation of the support.

[0058] Wireless camera: Connects to a wireless base station via WIFI to transmit real-time video data to the monitoring host and remote control;

[0059] The third monitoring system is connected to the first and second monitoring systems and is used to monitor the operating status of the first and second monitoring systems, and to monitor the working area during the retraction of the hydraulic support; the third monitoring system includes:

[0060] Wireless base station: Connected to the pullback controller, used to receive status information and monitoring data transmitted by the pullback controller;

[0061] Monitoring host: Connected to the wireless base station, used to obtain status information and monitoring data.

[0062] Integrated power supply box: connected to the winch motor, and connected to the underground intercom via audio cable for voice data transmission.

[0063] The above description is illustrative only and not restrictive. Those skilled in the art will understand that any modifications, variations or equivalents that can be made without departing from the spirit and scope defined by the claims will fall within the protection scope of this utility model.

Claims

1. A hydraulic powered support retraction monitoring system for a mine, characterised in that: include: First monitoring system: installed on the hydraulic support, used to monitor the status of the hydraulic support during the retraction process; Second monitoring system: installed on the worker, used to monitor the worker's status during the retraction of the hydraulic support; The third monitoring system is connected to the first monitoring system and the second monitoring system and is used to monitor the operating status of the first monitoring system and the second monitoring system, and to monitor the working area during the retraction of the hydraulic support. The first monitoring system includes: Wireless sensing system: installed on the hydraulic support, used to monitor the status information of the hydraulic support in real time, and to transmit the status information to the retraction controller; Retraction controller: installed on the hydraulic support, corresponding one-to-one with the hydraulic support, used to receive the status information transmitted by the wireless sensing system, used to receive the distance information transmitted by the positioning tag, used to generate alarm information based on the distance information, used to transmit the alarm information to the remote controller, used to receive the operation instructions transmitted by the remote controller, and used to transmit the status information and monitoring data information to the wireless base station; The second monitoring system includes: Location tag: It is attached to the staff member and wirelessly connected to the retraction controller to transmit distance information to the retraction controller; Remote control: used to send commands to the retraction controller and to receive the alarm information transmitted by the retraction controller; The third monitoring system includes: Wireless base station: connected to the pullback controller, used to receive the status information and monitoring data information transmitted by the pullback controller; Monitoring host: connected to the wireless base station, used to acquire the status information and the monitoring data information.

2. The hydraulic support withdrawing monitoring system according to claim 1, characterized in that: The wireless sensing system includes: Wireless tilt sensor: installed on the base, top beam and shield beam of the hydraulic support, used to detect the tilt state of the hydraulic support and generate tilt state information; Wireless pressure sensor: installed on the column of the hydraulic support, used to detect the hydraulic pressure in the lower chamber of the column and generate pressure status information.

3. The hydraulic support withdrawing monitoring system according to claim 2, characterized in that: The status information includes the tilt angle status information and the pressure status information.

4. The hydraulic support withdrawing monitoring system according to claim 2, characterized in that: The retraction controller includes a main control unit, a power supply unit connected to the main control unit for supplying power to the main control unit, a wireless module connected to the main control unit for communicating with the wireless sensing system and the remote controller, an audible and visual alarm unit connected to the main control unit for alarm display, and a drive communication unit connected to the main control unit.

5. The hydraulic support retracement monitoring system according to claim 4, characterized in that: The power supply unit is a detachable power supply.

6. The hydraulic support retracting monitoring system for mine according to claim 4, characterized in that: The wireless module includes a first wireless module connected to the wireless tilt sensor, a second wireless module connected to the wireless pressure sensor, a third wireless module connected to the remote controller, and a fourth wireless module connected to the wireless base station. The communication method of the first wireless module is one or more of the following: Bluetooth wireless communication, LoRa wireless communication, and ZigBee wireless communication; The second wireless module uses RFID wireless communication. The third wireless module uses UWB wireless communication. The fourth wireless module uses WiFi communication.

7. The hydraulic support retracting monitoring system according to claim 4, characterized in that: The first monitoring system also includes a solenoid valve driver connected to the drive communication unit via a cable, and the drive communication unit is equipped with CAN, RS458 and RS232 communication interfaces.

8. The hydraulic support retracting monitoring system according to claim 1, characterized in that: The remote control includes a remote-controlled mobile phone.

9. The hydraulic support retracting monitoring system according to claim 1, characterized in that: The second monitoring system also includes a wireless camera, which connects to the wireless base station via WIFI to transmit real-time video data to the monitoring host and remote control.

10. The hydraulic support retracting monitoring system for mine according to claim 1, characterized in that: The third monitoring system also includes an integrated power supply box connected to the winch motor. The integrated power supply box is connected to an underground intercom via an audio cable for voice data transmission.

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