MULTI-PURPOSE MODULAR HYDRAULIC GRIPPER WITH SYNCHRONOUS AND ASYNCHRONOUS OPERATION

The subject invention discloses a multi-purpose hydraulic gripper consisting of a hydraulic actuator (1)， a rotator (2)， an adjustment plate(3) and a bearing (4)， where a pair of gripping arms (3A， 3B) or (63A， 63B) or two arms (64) or (76A， 76B) are attached to the hydraulic actuator (1)， in the housing (11) of the hydraulic actuator there are two identical hydraulic cylinders (16A， 16B) and a control part of the hydraulic actuator that allows synchronous and asynchronous operation of the hydraulic actuator (1). The hydraulic actuator (1) is connected to a hydraulic pump with a variable outpress which is a part of the machine. Each gripping arm (3A， 3B， 63A， 63B， 64， 76A， 76B) has a pair of clamping handles in the upper part， and gripping arms (3A， 3B， 63A， 63B， 64， 76A， 76B) are clamped to hydraulic actuator by means of clamping cranks (19A， 19B). The invention also discloses gripping arms (76A， 76B) with a knife (780A， 780B) with a curved blade that allows cutting trees. The said hydraulic actuator can be made in various sizes， where the size of the hydraulic actuator is determined by the distance (A) between the axes of projections (17B) of the shaft (17).