What is the cause of the accident of inclined shaft sports car?
Inclined shaft sports car refers to the accident that the mine car falls down the inclined shaft out of control when lifting or lowering the vehicle in the inclined shaft. When the inclined shaft sports car happens. Out-of-control vehicles endanger personal safety. It may damage the support and cause roof caving, and may damage the cables, feng shui pipes, railways and lifting containers laid in the inclined shaft and cause the mine to stop production. If the air in the mine contains flammable gases or substances. Sparks generated by the collision of sports cars or damage to electrical facilities may cause explosions, and the losses are more serious.
The cause of the sports car accident is that the wire rope is lifted or the connecting device of the mine car is broken. The power of hoisting mechanism is insufficient, and the braking device fails. The connection of the mine car is unreliable, so the mine car connection device with automatic decoupling is adopted.
The measure to prevent sports car is to ensure that the braking part of the hoist works reliably. In addition to correctly selecting the connection device of the mine car to ensure the firm connection, it is also necessary to set up a device to prevent the sports car. In case of a sports car accident, the loss will be reduced. It is forbidden for personnel to walk in the inclined shaft during the hoisting process, and it is forbidden for personnel to take the tramcar illegally. When using inclined shaft to transport personnel. Inclined passenger cars should be equipped with reliable anti-slip devices, and passengers should learn to use them correctly.
Principle of protective device for inclined shaft sports car
The principle of the protection device for inclined shaft sports car is to use the car blocking net for "normally closed" protection. When the sports car has an accident due to broken rope, unhooking and other reasons, the flexible buffer can effectively intercept it. The device consists of six parts: status display, electric control box, car stopper, rotary encoder, pneumatic retractor and releaser.
The device adopts a number of anti-interference measures and redundancy technology, which prolongs the life of the system and greatly improves the reliability. Using advanced PLC control and signal acquisition of rotary encoder, the lifting of car barrier is safer, more reliable and easier to control.
In addition, the inclined shaft sports car protection device also has the function of normally closed car stop. According to the national requirements for mine anti-running car device, the car barrier must be normally closed, and it is always normally closed under normal circumstances or when no harvesters pass through; When the mine car passes and approaches the bumper, the bumper automatically lifts, and after the mine car passes, the bumper automatically falls and is in a normally closed state.
At the same time, the device also has the function of reverse forced opening. When the tramcar passes upward, if the guardrail cannot be lifted normally due to a fault, the guardrail will be forcibly opened, which will not affect the passage of the tramcar or destroy the guardrail network.
In addition, the device also has the functions of running status display and acousto-optic alarm. It can display the running state of the mine car in real time, including the indication of running position, the running direction of the mine car, the running track and the real-time display of the car obstacle position; When the mine car is running, in order to remind pedestrians, the voice alarm will send out a warning message of "no pedestrians" and have a light display.