Abstract: A slewing actuator system for rotating a boom structure comprises a cylindrical support member having lower and upper ends; a drive mounting member; gearing means comprising a gear assembly and at least one gear drive fixable to the drive mounting member and operatively connected to the gear assembly; and a boom support means to releasably secure the boom structure and operatively connectable to the gearing means. In an operating position, the boom support means is mounted proximate the upper end of the cylindrical support member and is rotatable about a substantially vertical axis; the gear assembly is substantially horizontal; and the gearing means imparts rotational movement to the boom support means. The system can include a pedestal surrounding at least part of the cylindrical support member, which can be a tube or kingpin. The compact modular system can be secured to various surfaces including ship decks and land surfaces.

Abstract: A slewing actuator system for rotating a boom structure comprises a cylindrical support member having lower and upper ends; a drive mounting member; gearing means comprising a gear assembly and at least one gear drive fixable to the drive mounting member and operatively connected to the gear assembly; and a boom support means to releasably secure the boom structure and operatively connectable to the gearing means. In an operating position, the boom support means is mounted proximate the upper end of the cylindrical support member and is rotatable about a substantially vertical axis; the gear assembly is substantially horizontal; and the gearing means imparts rotational movement to the boom support means. The system can include a pedestal surrounding at least part of the cylindrical support member, which can be a tube or kingpin. The compact modular system can be secured to various surfaces including ship decks and land surfaces.

Abstract: A basket gate mechanism, including two opposed gate segments supported at its ends by pairs of different length arms interconnected by a mechanism to coordinate the movement of the segments which are opened and closed by a double acting hydraulic cylinder simplifying the opening and closing of the gate; a linkage device to support the gates minimizing torsional stress resulting from the gate being angled, and a pair of shear plates to control the level of the solids discharged onto the conveyor.

Abstract: An arcuate structure for bulk particulate solids which has inner and outer concentric containment walls. The space between the inner and outer walls is subdivided into a plurality of storage subspaces, and covered with a continuous roof. A radial stacker conveyor system receives particulate solids to be stored, and transfers these particulate solids into a selected storage space through access apertures disposed on a circular arc in the roof. To allow the radial stacker to access each roof aperture, it is rotatable about an axis concentric with the inner and outer walls, and the roof apertures are located on an arc concentric with the inner and outer walls. A separate radially located conveyor system is provided beneath the floor of each storage space, by means of which particulate solid stored in any chosen storage subspace can be retrieved through discharge gates located in the floor of each storage space above the conveyor, and transported to a delivery system adjacent to the radial stacker.

Abstract: An arcuate structure for bulk particulate solids which has inner and outer concentric containment walls. The space between the inner and outer walls is subdivided into a plurality of storage subspaces, and covered with a continuous roof. A radial stacker conveyor system receives particulate solids to be stored, and transfers these particulate solids into a selected storage space through access apertures disposed on a circular arc in the roof. To allow the radial stacker to access each roof aperture, it is rotatable about an axis concentric with the inner and outer walls, and the roof apertures are located on an arc concentric with the inner and outer walls. A separate radially located conveyor system is provided beneath the floor of each storage space, by means of which particulate solid stored in any chosen storage subspace can be retrieved through discharge gates located in the floor of each storage space above the conveyor, and transported to a delivery system adjacent to the radial stacker.

Abstract: A basket gate mechanism, typically for use in the cargo holds of bulk carriers, includes two opposed gate segments which shut along a central line. Each gate segment is supported at its ends by pairs of different length arms, so that when the gate is opened, the segments slope downwardly. The pairs of arms are interconnected by a mechanism that ensures coordination of the movement of the segments. The arms and the supporting framework are protected by a hog back. The gate is opened and closed by a double acting hydraulic cylinder, located between the gate ends. The cylinders provide three gate positions: closed, operating to discharge solids, and clean out, which considerably simplifies the equipment required for controlling the opening and closing of the gate. The gate opening is angled relative to the conveyor beneath it, so that the downstream end is further away than the downstream end.

Abstract: A basket gate (18) mechanism, typically for use in the cargo holds (12), of bulk carriers (10), includes two opposed gate segments (50, 51) which shut along a central line. Each gate segment (50, 51) is supported at its ends by pairs of different length arms (57, 58, 59, 60), so that when the gate (18) is opened, the segments (50, 51) slope downwardly. The pairs of arms (57, 58, 59, 60) are interconnected by a small and compact direction reversing lever mechanism (61, 62, 63, 64) that ensures coordination of the movement of the segments (50, 51). The arms (57, 58, 59, 60) and the supporting framework (52) are protected by a hog back (53). The gate (18) is opened and closed by an actuating means (65), typically a double acting hydraulic cylinder, located between the gate segments (50, 51) at their midpoints, and directly acting on said said gate segments.