Everyone who has driven a crane knows the five operating levers on the crane, but novice drivers do not know what the five operating levers on the crane are for. Are the five operating levers on the crane the same? Huanghe technicians from Xinxiang Crane Rental Company will answer your questions in detail.
Q: Are the five joysticks on the crane all the same?
Answer: Not the same.
Five joysticks on the crane:
Count from left to right;
The first lever is left and right,
The second lever is the boom extension,
The third pole is the luffing pole, which is the boom climbing pole.
The fourth shot is a small hook up and down.
The fifth is the big ups and downs.
Crane safety devices:
1. Lifting indicator (angle plate, also called weight limiter)
The angle indicator installed at the root of the boom near the driving position changes with the elevation of the boom and reflects the included angle of the boom to the ground. Knowing the elevation of the boom at different positions, according to the crane performance table and performance curve We can know the reference values such as the amplitude value, lifting weight and lifting height at a certain elevation angle.
2. Over hoisting limiter (also known as ultra-high limiter)
A safety device installed on the pulley block at the end of the boom to limit the lifting height of the hook head to prevent overhanging accidents. It guarantees that when the hook is lifted to the extreme position, it can automatically send an alarm signal or cut off the power source to stop lifting to prevent over-rolling.
The torque limiter is a safety device that automatically cuts off the lifting or amplitude power source when the load torque reaches the rated lifting torque and sends out a prohibitive alarm signal. It is a limiter to prevent crane instability caused by overload.
4, anti-arm back device and anti-back bar bracket
Anti-arm back device and anti-back bar support are safety devices that can no longer be lifted when the boom is raised to the maximum rated elevation angle. It prevents backward tilting when the boom angle is too large.
The above is the related introduction of " Is the five operating levers on the crane all the same? " Knowing the above, we know that the five operating levers on the crane are different.