Gantry crane buffer device what type?

       bridge gantry crane  is a variation of electric hoist gantry crane is a gantry crane. In the port, mainly for outdoor yard, yard goods, bulk cargo loading and unloading operations. Its metal structure shaped like a door frame, bearing girder installed under two feet directly in the ground walking on the tracks, you can have both ends of the main beam overhanging cantilever. gantry crane  with space utilization, operating range, wide adaptability, versatility and other characteristics, widely used in the port yard.

       Electric hoist gantry crane  buffer device is divided into three categories: physical buffers, spring buffers, shock absorber

      One is the physical buffer. Buffer is divided into physical and polyurethane rubber buffers buffer. Both have their own characteristics, rubber buffer structure is simple, can play a role in blocking, while its low price, long life, installation and maintenance is also very convenient, thus Polyurethane buffers currently in the more extensive use of international .

     One is spring buffer. Spring buffer structure is very simple, of a total of three parts, namely, meet, springs and housings. The main working principle of the buffer spring of the crane when the collision energy can be transformed into the compression spring, in order to prevent accidents.

     Finally, hydraulic buffers. This buffer is the working principle of the crane when the collision occurs, the hydraulic buffer to each part of the  hoist crane  through a process, in order to play the role of a buffer.