Mining lithium battery monorail crane vehicle voice alarm device

Abstract

The utility model relates to the field of mine transportation equipment especially relates to a mine lithium battery monorail crane vehicle voice alarm device, including cab and electric drive unit, one side of cab is equipped with electric drive unit, one side of electric drive unit is equipped with battery suspension beam assembly, one side of battery suspension beam assembly is equipped with electro -hydraulic control car, the inside of electro -hydraulic control car is equipped with master control box, the lower extreme of electro -hydraulic control car is equipped with alarm. The device has the whole journey automatic voice alarm of driving, brake system fault monitoring function, solved the problem that the underground manual early warning is easy to ignore, small, low transportation efficiency and troubleshooting difficult.

Description

Technical Field

[0001] This utility model relates to the field of mine transportation equipment, and in particular to a voice alarm device for a mine lithium battery monorail crane. Background Technology

[0002] In our unit's underground coal mine electromechanical auxiliary transportation system, the lithium battery monorail crane is the core equipment for material transportation in the fully mechanized mining face. According to the guidelines of the "Coal Mine Safety Regulations," when transporting materials in underground roadways, it is necessary to avoid the transportation device injuring workers. However, in recent years, accidents involving underground electromechanical transportation in coal mines have occurred frequently, causing significant losses to safe production and the safety of people's lives and property.

[0003] Currently, a large number of personnel are working in the two roadways of the mining face. To ensure the safety of the transportation process, the driver needs to maintain a high level of concentration throughout the monorail crane's operation, observing for any risk of pedestrian injury and promptly alerting pedestrians via verbal warning. This method presents two major challenges: First, in the noisy underground environment, verbal warnings are easily ignored, requiring the driver to repeatedly stop the crane and sound an alarm, disrupting the continuity of the transportation process and reducing efficiency. Second, the range of awareness for manual verbal warnings is limited; workers on the transportation line cannot be informed of the vehicle's operating status in advance and prepare for collisions. If the vehicle's brakes fail in an inclined roadway, causing it to slip, it can easily lead to accidents involving personnel injuries. Therefore, an effective collision prevention measure is urgently needed.

[0004] In existing technologies, the only anti-collision function of lithium battery monorail locomotives at the factory is the brake system, lacking anti-collision measures or measures unsuitable for underground coal mines. Most monorail products lack voice alarm devices, relying solely on startup noise or driver announcements for warnings. Some monorail products have onboard horns and other voice alarm devices, but these can only be activated by the driver based on transport conditions. All of these solutions depend on manual operation, requiring high skill levels from the monorail operator and posing a risk of accidents due to negligence. Therefore, we propose a voice alarm device for mining lithium battery monorail locomotives, solving the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a voice alarm device for a mining lithium battery monorail crane.

[0006] The technical solution of this utility model is as follows: A voice alarm device for a mining lithium battery monorail crane includes a cab and an electric drive unit. The electric drive unit is located on one side of the cab, and a battery lifting beam assembly is located on one side of the electric drive unit. An electro-hydraulic control vehicle is located on one side of the battery lifting beam assembly. The electro-hydraulic control vehicle has a main control box inside and an alarm at the lower end of the electro-hydraulic control vehicle.

[0007] Preferably, a hydraulic pipeline and cable are provided between the electro-hydraulic control vehicle and the electric drive unit.

[0008] Preferably, the cab, electric drive unit, battery suspension beam assembly, and electro-hydraulic control vehicle are connected by linkages.

[0009] Preferably, the main control box is equipped with a main control board, and the surface of the main control board includes an intrinsically safe power supply, an emergency stop relay, a drive controller, and a CAN repeater.

[0010] Preferably, a crossbeam is fixed to the upper end of the electro-hydraulic control vehicle, and a connecting frame is rotatably mounted on the surface of the crossbeam, the connecting frame being rolledly connected to the track.

[0011] Compared with existing technologies, the advantages of this utility model are: This invention directly utilizes the 24V DC power output from the braking control circuit of the monorail crane's main control box to power the voice alarm, eliminating the need for an additional independent power module and meeting the explosion-proof requirements of underground coal mines. The alarm integrates a voice module and speaker, pre-recording mine-specific voice prompts. It automatically powers on and broadcasts the alarm when the locomotive is moving and stops when it stops, requiring no manual intervention. Simultaneously, the voice broadcast status can provide a preliminary assessment of the fault type; a normal voice broadcast may indicate a solenoid valve bypass fault, while a voice malfunction may indicate a fault in the main control box or the broadcaster, thus enabling auxiliary monitoring of braking system faults. This design is simple in structure and easy to install, requiring only the alarm to be fixed inside the electro-hydraulic control vehicle and connected to a power source, without altering the original core structure of the locomotive. It is low in cost and highly reliable.

[0012] Based on the first beneficial effect, this utility model effectively overcomes the shortcomings of existing technologies that rely on manual early warning. In existing technologies, driver-shouted warnings are easily ignored due to loud noise underground, and the warning range is limited, preventing workers from avoiding obstacles in advance and requiring frequent stops, thus affecting transportation efficiency; some vehicle-mounted horns require manual activation, posing a risk of driver negligence. This device, however, provides automatic voice alarms, with a broadcast range covering the area around the transportation route, constantly reminding workers to avoid obstacles, significantly reducing the risk of personnel collisions, while also reducing the number of stop alarms, ensuring transportation continuity, and improving transportation efficiency. Furthermore, by using voice status to assist in troubleshooting, the direction of the fault can be preliminarily located without complex testing equipment, shortening repair time, reducing maintenance costs, and further adapting to the needs of the complex working environment in coal mines.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the composition of the monorail crane train of this utility model; Figure 2This is a schematic diagram of the electro-hydraulic controller of this utility model; Figure 3 This is a schematic diagram of the main control box of this utility model; Figure 4 This is a schematic diagram illustrating the principle of voice broadcasting of this utility model.

[0015] Figure label: 1. Cab; 2. Electric drive unit; 3. Battery-powered suspension beam assembly; 4. Electro-hydraulic control vehicle; 5. Connecting rod; 6. Hydraulic pipeline; 7. Cable; 8. Crossbeam; 9. Connecting frame; 10. Main control box; 11. CAN repeater; 12. Main control board; 13. Intrinsically safe power supply; 14. Emergency stop relay; 15. Drive controller; 16. Alarm. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0020] Example 1

[0021] Please see Figures 1-4 As shown, this embodiment is a voice alarm device for a mining lithium battery monorail crane, including a cab 1 and an electric drive unit 2. The electric drive unit 2 is provided on one side of the cab 1, the battery lifting beam assembly 3 is provided on one side of the electric drive unit 2, the electro-hydraulic control vehicle 4 is provided on one side of the battery lifting beam assembly 3, the main control box 10 is provided inside the electro-hydraulic control vehicle 4, and an alarm 16 is provided at the lower end of the electro-hydraulic control vehicle 4. The driver's cab 1 serves as the core operating unit of the locomotive. It is equipped with a driver's control panel, which integrates an intrinsically safe control box, a monitoring host display screen (displaying key parameters such as voltage, current, and methane concentration in real time), an on-board video display screen (feedback of tunnel environment images collected by on-board cameras), and a combination control handle (including parking gear P, neutral gear N, forward gear D, reverse gear R, and horn button). Externally, it is equipped with lighting signal lights and on-board cameras. A shock absorption device is installed between the supporting frame and the car body, which can effectively buffer the vibration caused by the bumps in the underground tunnel, and improve driving comfort and operational stability. The drive unit consists of a frame, reducer, explosion-proof permanent magnet synchronous speed regulator, drive clamping cylinder, and brake. It is installed on the track using an independent suspension method and relies on the friction between the drive wheels and the track to pull the locomotive. When going downhill, the drive motor can convert the locomotive's kinetic energy (or potential energy) into electrical energy to charge the lithium battery in reverse, achieving energy feedback. It is divided into a conventional electric drive unit 2 and a sling-away electric drive unit 2. The sling-away electric drive unit 2 supports switching between three modes: "light load", "medium load", and "heavy load". If a motor fails, it can be easily sling-away to continue working, ensuring the continuity of transportation. The battery lifting beam assembly consists of three core components: a battery lifting beam, a mine-use explosion-proof lithium-ion power supply (two 228Ah series units, total capacity 456Ah, voltage 320V), and a lifting frame. The lifting frame is fixedly connected to the lithium-ion power supply. Power is output through a hydraulic hoist, allowing for quick power supply replacement at different tunnel heights. Charging and discharging are achieved through quick connectors. A BMS battery management system is configured to issue a low battery alarm when the battery level is below 20%, preventing overcharging, over-discharging, and undercharging from affecting battery life.

[0022] Example 2

[0023] Please see Figures 1-4 As shown, this embodiment, based on embodiment 1, further includes: the electro-hydraulic control vehicle 4, which serves as the core control unit of the locomotive, integrating three core systems: the power control system, the hydraulic system, and the monitoring and protection system. The power control system is responsible for the charging and discharging control of the lithium-ion power supply, the frequency conversion drive of the drive motor, the start and stop control of the oil pump motor, and signal processing; the hydraulic system is divided into a traveling hydraulic system and an auxiliary hydraulic system (including clamping, braking, and lifting circuits), providing hydraulic power for driving clamping, braking, and lifting; the monitoring and protection system monitors the methane concentration, power supply, clamping pressure, braking pressure, hydraulic oil level, and other statuses in real time, triggering alarms and braking when abnormalities occur; The main control box 10 is built inside the electrocardiogram and fluid control vehicle 4. It is the control center of the entire vehicle and includes key components such as the main control board 12 / PLC and brake control circuit. It can output 24V DC power to power the brake release solenoid valve and voice alarm 16, and at the same time receive operation signals, remote control signals and feedback signals from various sensors to complete logical judgment and command output. The alarm 16 adopts a mine-use explosion-proof voice alarm device, which is suitable for underground explosion-hazardous environments. It integrates a voice module and speaker, and pre-records mine-specific voice prompts such as "Train in motion, no pedestrians allowed". It is controlled by the 1024V DC power supply of the main control box. When the locomotive is in motion, it will continuously broadcast when powered on and stop when the power is lost when the locomotive stops, without the need for manual intervention. Each component adopts a modular layout design, with the cab 1, electric drive unit 2, battery-powered lifting beam assembly 3, and electro-hydraulic control vehicle 4 connected sequentially. The structure is compact and the layout is reasonable, adaptable to the narrow roadway space in coal mines. The modular design facilitates disassembly, transportation, maintenance, and repair. The electro-hydraulic control vehicle 4 has a built-in main control box 10 that can directly provide 24V DC power to the alarm 16 for the braking control circuit, realizing automatic voice alarm throughout the locomotive's operation. This replaces the traditional manual announcement or manual alarm activation mode, solving the problems of high noise levels in the underground environment and the ease with which manual warnings are ignored, thus reducing the driver's workload. The alarm 16 is installed at the lower end of the electro-hydraulic control vehicle 4, and its broadcast range can cover the surrounding area of ​​the transportation route, which can remind workers in the roadway to avoid the area in advance, significantly reducing the risk of personnel collision accidents. At the same time, the working status of the alarm 16 can be used to preliminarily determine the type of fault (if the voice is normal, it may be a solenoid valve bypass fault; if the voice is faulty, it may be a fault in the main control box 10 or the broadcaster), shortening the fault diagnosis time and improving transportation efficiency and equipment reliability.

[0024] A hydraulic pipeline 6 and a cable 7 are provided between the electro-hydraulic control vehicle 4 and the electric drive unit 2. The high-pressure wear-resistant hydraulic pipeline 6 is adapted to the working pressure of the locomotive hydraulic system (normal working pressure 13MPa) and is used to connect the electro-hydraulic control vehicle 4 and the electric drive unit 2 to transmit hydraulic oil to provide the clamping pressure for driving the clamping cylinder and the starting pressure for the brake. The pipeline uses explosion-proof sealed joints, and the connection is secure and reliable. It is equipped with special pipe clamps to prevent the pipeline from shaking and wearing during locomotive operation and to avoid hydraulic oil leakage that could cause safety hazards. The pipeline material is oil-resistant, wear-resistant, and corrosion-resistant, and is suitable for the harsh environment of dampness and dust in the mine. It includes two types: power cable 7 and signal cable 7. The power cable 7 is a three-phase AC cable used to convert the DC power from the lithium battery through an inverter to provide operating power for the explosion-proof permanent magnet synchronous speed control unit 2. The signal cable 7 is used to transmit control commands (such as speed regulation and braking commands) and status detection signals (such as motor speed, temperature, braking pressure, clamping pressure, etc.) between the main control box 10 and the electric drive unit 2. The cable 7 has explosion-proof, flame-retardant, wear-resistant, and anti-interference characteristics, and is equipped with an external protective sleeve, which can effectively resist downhole mechanical damage and electromagnetic interference, and ensure stable signal and power transmission.

[0025] The cab 1, electric drive unit 2, battery suspension beam assembly 3, and electro-hydraulic control vehicle 4 are connected by a connecting rod 5, which is made of high-strength alloy steel and has undergone explosion-proof and anti-corrosion treatment to resist the erosion of moisture and corrosive gases underground. The connecting rod 5 has precisely matched pins and locking nuts at both ends, which seamlessly connect with the connection interfaces of the cab 1, electric drive unit 2, battery suspension beam assembly 3, and electro-hydraulic control vehicle 4. Buffer pads are added at the connection points to absorb the vibration and impact generated when the locomotive starts, brakes, and climbs. The length of the connecting rod 5 is designed to adapt to the locomotive model (DL160 / 96PY, DL200 / 128PY, DL260 / 146PY) to ensure that the coaxiality of each component is consistent after connection. It can withstand a maximum traction force of 160-260kN and an emergency braking force of 240-390kN, meeting the stress requirements of the locomotive under heavy load and climbing conditions.

[0026] The main control box 10 houses a main control board 12. The surface of the main control board 12 includes an intrinsically safe power supply 13, an emergency stop relay 14, a drive controller 15, and a CAN repeater 11. As the core component of the main control box 10, the main control board 12 integrates signal acquisition, logic judgment, and command output functions. It can receive operation signals from the cab 1, remote control signals, and feedback signals from various detection elements such as methane sensors, pressure sensors, and power sensors. After logic processing, it outputs commands such as drive motor control, hydraulic system solenoid valve control, and alarm 16 start / stop. It supports CAN bus communication and can interact with various execution units and detection units to ensure accurate execution of control commands. The intrinsically safe power supply 13 is a mine-use explosion-proof power module that outputs a stable 24V DC power supply. It not only powers the pilot solenoid valve of the braking control circuit but also provides operating power to key components such as the main control board 12, the voice alarm 16, and the emergency stop relay 14. The power module has overvoltage, overcurrent, and short-circuit protection functions, adapts to fluctuations in the underground power grid, and ensures a stable power supply to the control circuit and alarm device. The emergency stop relay 14 is linked to the emergency stop button in the cab 1. Under normal operation, it keeps the main power circuit connected. When the emergency stop button is pressed or an emergency braking signal is received from the main control board 12, it immediately cuts off the main power circuit of the drive motor and the power circuit of the hydraulic system, causing the brake to engage. Simultaneously, it triggers the alarm 16 to emit an emergency alarm voice, achieving rapid shutdown and early warning in emergency situations. The controller 15 is a permanent magnet synchronous variable frequency drive controller 15, used to control the explosion-proof permanent magnet synchronous speed regulating integrated machine of the electric drive unit 2. It can realize precise adjustment of motor speed and torque, adapt to the three drive modes of locomotive "light load", "medium load" and "heavy load", and meet the transportation needs under different loads and slopes. It has multiple protection functions such as overload, overcurrent, overvoltage and overheat. In case of abnormality, it can automatically cut off the power and feed back the fault signal to the main control board 12. The CAN repeater 11 is used to extend the communication distance of the CAN bus, enhance the stability of signal transmission, avoid signal attenuation or loss due to the long underground locomotive train (maximum 30m), and ensure real-time data interaction between the main control board 12, electric drive unit 2, alarm 16 and various sensors, and ensure the reliability of status monitoring and control command transmission. The emergency stop relay 14 is linked with the alarm 16, which can quickly cut off the power and issue a strong warning in an emergency, improving the safety of emergency handling. The precise speed regulation and multiple protection functions of the drive controller 15, together with the stable signal transmission of the CAN repeater 11, make the locomotive run smoothly and have strong load adaptability. Fault information can be fed back to the main control board 12 in real time. Combined with the fault diagnosis function of the alarm 16, the fault diagnosis and repair time is shortened and the transportation efficiency is improved.

[0027] The upper end of the electro-hydraulic control vehicle 4 is fixed with a crossbeam 8, and a connecting frame 9 is rotatably mounted on the surface of the crossbeam 8. The connecting frame 9 is rotatably connected to the track.

[0028] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A voice alarm device for a mining lithium battery monorail crane, comprising a cab (1) and an electric drive unit (2), characterized in that: An electric drive unit (2) is provided on one side of the cab (1), a battery suspension beam assembly (3) is provided on one side of the electric drive unit (2), an electro-hydraulic control vehicle (4) is provided on one side of the battery suspension beam assembly (3), a main control box (10) is provided inside the electro-hydraulic control vehicle (4), and an alarm (16) is provided at the lower end of the electro-hydraulic control vehicle (4).

2. The voice alarm device for a mining lithium battery monorail crane according to claim 1, characterized in that: Hydraulic pipelines (6) and cables (7) are provided between the electro-hydraulic control vehicle (4) and the electric drive unit (2).

3. The voice alarm device for a mining lithium battery monorail crane according to claim 1, characterized in that: The cab (1), electric drive unit (2), battery suspension beam assembly (3) and electro-hydraulic control vehicle (4) are connected by a connecting rod (5).

4. The voice alarm device for a mining lithium battery monorail crane according to claim 1, characterized in that: The main control box (10) is equipped with a main control board (12), and the surface of the main control board (12) includes an intrinsically safe power supply (13), an emergency stop relay (14), a drive controller (15), and a CAN repeater (11).

5. The voice alarm device for a mining lithium battery monorail crane according to claim 1, characterized in that: The electro-hydraulic control vehicle (4) has a crossbeam (8) fixed at its upper end. A connecting frame (9) is rotatably mounted on the surface of the crossbeam (8). The connecting frame (9) is rotatably connected to the track.

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