ROCKER STRUCTURE, BOBBING MECHANISM, PUMPING SYSTEM AND ENGINEERING MACHINE

摘要

A rocker structure and a bobbing mechanism of a pumping system, a pumping system, and an engineering machine. The rocker structure (13) comprises a first swinging part (131) and a second swinging part (132) arranged along a rotating axis direction of a rotating part (133). A left swinging valve oil cylinder (11) and a right swinging valve oil cylinder (12) are respectively connected to the first swinging part (131) and the second swinging part (132), so that the left and right swinging valve oil cylinders (11, 12) can be arranged in two different vertical planes, thus flexibly arranging the components of the bobbing mechanism. Therefore, the kinetic moment of the bobbing mechanism during the swinging process is reasonably distributed; the moment value of the rocker structure (13) gradually decreases from the starting to the termination, thereby preventing the bobbing mechanism from becoming incapable of swinging and reducing the reversing impact force; the impact on a distribution valve and the like is reduced; the vibration of the bobbing mechanism, the distribution valve, and the pumping system is alleviated; the wearing of the parts is reduced and the service life of the parts is prolonged.