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Product IntroductionThis product complies with the Coal Mine Safety Regulations, which mandate the installation of runaway vehicle protection devices in inclined shafts capable of stopping vehicles that have broken cables or disengaged hooks. The vehicle restraint device must remain closed at all times and may only be opened when releasing vehicles. In inclined shafts also used for personnel transport, both the vehicle restraint device and runaway vehicle protection device must remain in the open position and be reliably locked when lifting personnel.
This device is interlocked with the winch power supply: when the winch is energized, the device operates; when the winch is de-energized, the device ceases operation. Upon power-up, the system detects the real-time position of the mine car to verify whether the car stop barrier is fully lowered.
During normal descent, the barrier remains closed. When the mine car reaches the first preset value set by the PLC, the master PLC controls the hoisting motor to automatically raise the barrier. Upon reaching the second preset value, the PLC controls the motor to lower the barrier, restoring the closed state. During normal ascent, the barrier automatically lowers upon reaching the second preset value, returning to the closed state. When the mine car ascends normally to the second preset value.
the PLC controls the barrier to rise. Upon reaching the first preset value, the barrier automatically lowers, restoring the normally closed state.When the mine car exceeds normal travel speed (runaway or coasting), the PLC controls the buffer-type barrier to reliably intercept the mine car, effectively preventing accidents.
Technical Specifications| Parameters Table for Anti-Runaway Device in Inclined Shafts | ||
| Parameter Category | Technical Specifications | Reference Standard/Model |
| Impact resistance | 1.5-2.5MJ | MT 933-2005 |
| Buffer distance | 0.3-10m（Flexible Energy Dissipator） | ZDC 933-2005 |
| Maximum Buffer Resistance | ≤220kN（ZDC30-2.2 Model） | |
| Applicable tilt angle | ≤30 ° | |
| Control Box Voltage | AC 127V (±10%） | KHG6-127/B |
| Winch Motor Voltage | AC 380V/660V/1140V | JF-150ZD |
| Sensing Accuracy | Parking space detection error ≤0.1m, Speed detection threshold 5m/s | |
| Barrier Response Time | Normally closed design, Actuation response ≤0.5 seconds, Lifting time 3–5 seconds | |
| Wire Rope Specifications | φ18mm（6×37+FC Model） | |
| Track Adaptation | （18-38kg/m） | |
ApplicationProduct DetailsPerformance Features
1. Normally Closed Interception: The vehicle barrier remains closed by default. Linked to the winch via position sensors, it automatically opens for normal mine car passage and closes immediately afterward. Runaway mine cars are intercepted by flexible buffers.
2. Energy-Absorbing Buffering: Utilizes steel rope energy absorbers (withstanding 2.5-10 megajoules of impact energy) for buffered interception, minimizing damage to mine cars.
3. Intelligent Control: The PLC system continuously monitors mine car positions (with an accuracy of ≤1 meter), integrating audible/visual alarms, winch interlocking, and self-diagnostic fault detection functions.
Key Components
1. Core Structure: Vehicle Barrier (Normally Closed), Energy-Absorbing Buffer, Winch Power Unit (1.5-7.5kW)
2. Sensing System: Encoder Distance Measurement, Position Sensor, Speed Detection Device (Interception Threshold 5m/s)
3. Protection Levels: Adheres to “One Slope, Three Barriers” design,ensuring safety through multi-level interception
Installation Specifications
Deployment Locations:
Install the first vehicle barrier ≥20 meters below the gradient change point.
When the slope length exceeds 50 meters, add additional vehicle barriers every 80-150 meters (time interval ≤100 meters for slopes >8°).
Install temporary interception devices 15-20 meters above the work area.
Application Scenario: Suitable for inclined tracks with a single rail, gradient ≤30°, and track weight 18-38 kg.
