The invention provides a double-arm grabbing mechanism with a fixed-length locking function, and belongs to the field of
mechanical design. Comprising a hollow
piston rod
hydraulic cylinder, a connecting oil way, a right arm movable
pulley trolley, a single-action
hydraulic cylinder, a chain
pulley transmission mechanism, a left arm movable
pulley trolley, a two-way single-rod
hydraulic cylinder set, a guide device, a fixed-length rod, a left grabbing mechanical arm, a right grabbing mechanical arm and a
machine body shell. A hollow
piston rod hydraulic cylinder, a connecting oil way, a right arm movable pulley trolley, a single-action hydraulic cylinder, a chain pulley transmission mechanism, a left arm movable pulley trolley, a two-way single-rod hydraulic
cylinder set, a guide device and a fixed-length rod are arranged in the
machine body shell, and the upper portion of the left grabbing mechanical arm and the upper portion of the right grabbing mechanical arm are arranged in the
machine body shell. The lower portions of the left grabbing mechanical arm and the right grabbing mechanical arm extend out of the machine body shell. By means of the fixed-length rod mechanical
locking mechanism and principle, the fixed-length locking function of double-arm grabbing is achieved, and the reliability and safety of equipment are improved.