The invention discloses a weldment hydraulic shaping device, and particularly relates to the technical field of weldment shaping
machining. The weldment hydraulic shaping device comprises an operationpanel, a first hydraulic rotating motor, a second hydraulic rotating motor and armrests, wherein the armrests are symmetrically and fixedly installed on the two sides of the operation panel. According to the weldment hydraulic shaping device provided by the invention, through the arrangement of a correcting
assembly, the first hydraulic rotating motor is started to drive a matching
cam to rotatein a reciprocating mode, a pushing shaft is made to bend a horizontal weldment around a matching cylinder, and weldments with different sizes can be clamped and shaped, so that applicability is high,operation is conducted conveniently, and the shaping quality of the weldment is good; and through the arrangement of a limiting
assembly, when a transmission long plate moves forwards, a transmissionshort plate moves backwards, clamping blocks at the end parts of connecting plates clamp inwards, otherwise, the clamping blocks loosen outwards, so that a correction
machine clamps and protects the qualified part of the weldment while shaping the deformed part of the weldment, secondary deformation of the qualified part of the weldment is prevented, and the shaping effect of the weldment is ensured.