Abstract: A scroll assembly includes an orbiting scroll and a cross ring. The orbiting scroll is configured to have a bottom plate. A plurality of bayonets and two positioning slots are provided on the outer peripheral surface of the bottom plate. The bayonets are adapted to be clamped by a chuck of a turning tool. The cross ring is configured to have an annular body and two positioning pins. An annular groove adapted for being formed by turning is provided on the lower surface of the bottom plate of the orbiting scroll, and a chamfer is formed on the edge of the annular groove formed by the intersection of the circumferential vertical surface of the positioning groove and the lower surface of the bottom plate.

Abstract: A scroll assembly includes an orbiting scroll and a cross ring. The orbiting scroll is configured to have a bottom plate. A plurality of bayonets and two positioning slots are provided on the outer peripheral surface of the bottom plate. The bayonets are adapted to be clamped by a chuck of a turning tool. The two positioning slots are arranged centrally symmetrically relative to the center of the orbiting scroll. Each of the positioning slots comprises two radial vertical surfaces, a circumferential vertical surface and an opening facing outwards in the radial direction. The cross ring is configured to have an annular body and two positioning pins.

Abstract: A crankshaft simulation device includes: a fixed shaft in which a through hole extending in the axial direction of the fixed shaft is provided; a wedge-shaped rod which is movable in the through hole under an external force, and the first end of the wedge-shaped rod is extendable from the first axial end of the fixed shaft, the second end of the wedge-shaped rod is extendable from the second axial end of the fixed shaft, and the first end of the wedge-shaped rod is provided with an inclined surface so that the first end of the wedge-shaped rod is wedge-shaped; a support rod extending from the first axial end of the fixed shaft in the axial direction of the fixed shaft; a movable shaft in which a flat through hole is provided, and the support rod is inserted into the flat through hole, and the size of the flat through hole in the radial direction of the movable shaft is configured to allow the movable shaft to be shifted in the radial direction of the movable shaft, and the flat through hole is configured to a