CONCRETE PUMP WITH PLACING BOOM Russian patent published in 2017 - IPC E04G21/04 

FIELD: engines and pumps.

SUBSTANCE: invention relates to a working device comprising of a movable or stationary basis (10, 10', 10") which has a fixed base (14, 14', 14"), and mounted on the support column (35) of the base by means of a drive mechanism (33) to rotate about the vertical rotary axis (30) rotary head (32) and arm (16). The arm (16) is rotatably mounted on the bearing seat (36) of the rotary head (32) around the horizontal rotary axis (38). In addition, there is a hydraulic cylinder-piston unit (40) provided which, by its fixed ends (42, 44) fixed against the cylinder and the piston rod, is pivotally connected to the articulated joints (46, 48) with the horizontal pivot axis on the side of the rotary head. The rotary head (32) has a base portion (50) disposed on the support column (35) and bracing the bearing seat (36) for the arm (16) and an articulated joint (48) on the side of the rotary head for the cylinder-piston unit (40), a transition element (52), which at the place of interface (54) have connecting elements connected in pairs. The first group of connecting elements is made in the form of suspension elements (56, 57; 56', 57'), and the second group of connecting elements is in the form of sockets (58, 59) for suspension elements.

EFFECT: simplifying the interface place between the base and the placing boom.

16 cl, 22 dwg