Crane buffer belongs to the safety protection device in the lifting machinery and equipment, installed in the orbital running equipment on the security components. The function of the crane buffer is taking up the impact force generated by the impact during the operation so as to effectively protect and reduce the damage caused by equipment damage.
Port, waste management, wind power, automobile, transformer, storage and logistics, steel, tunnel, construction machinery, metallurgy and ship-building industries.
At present, the domestic commonly used crane buffer can be divided into two types: one is a storage type buffer, the mechanism is divided into spring buffer and rubber buffer; the other is energy-consuming buffer, its divided into polyurethane buffer, hydraulic buffer, ZL composite buffer, elastic damping body buffer. Due to various types of buffer materials, different structural forms, the scope of application and use of the environment are also different.
The spring bumper is mainly composed of a head buffer, a spring and a housing. Its characteristics are relatively simple institutions, the use of reliable. When the crane hit the spring buffer, its energy is mainly converted to spring compression energy. The improved spring bumper with the bullet-proof mechanism prevents the resilience.
When the buffer is subjected to a collision pressure, the kinetic energy is transferred to the piston by the plug and the accelerating spring to move to the right. The original buffer working chamber is equipped with a reset spring, mandrel and oil. The movement of the piston squeezes the oil in the working chamber so that it resets the spring to compress and squeeze the oil from the annular gap between the piston and the mandrel and into the reservoir.
When the piston starts to move, the annular gap is larger and the oil is easily squeezed out. When the piston continues to move, the annular gap becomes smaller and smaller, that is, the piston resistance increases, to the mandrel of the cylindrical stage, the annular gap is difficult to tell, the resistance is also stable at the maximum. The process of the buffer being compressed is the process of squeezing oil through the piston. This process consumes a lot of kinetic energy, play a buffer role. When the work is done, the piston is pushed to the original position by the return spring to complete a working cycle.