A method for the partial emptying of buoyant objects, which are stored in a loading aid having at least one opening is provided. A processing weight to be partially emptied is established. A fill weight is determined of the objects in the loading aid via a first weighing. The loading aid is at least partially immersed in a liquid bath. The loading aid is positioned or moved for a retention time predefined as a function of the fill weight and of the processing weight in the bath such that there is an on-average constant flow relative to the loading aid and such that the opening is disposed at least partially below a fill level surface of the bath, whereby the objects are taken along by the flow. The at least partially emptied loading aid is lifted out of the bath after the retention time has elapsed.

A method to manufacture a tubular element for transferring abrasive materials such as concrete, inert materials or suchlike, wherein the tubular element comprises an internal tubular component made of chromium carbide or other wear-resistant material, and an internal tubular component in contact with and coaxial to the internal tubular component and made of composite material.

A method to manufacture a tubular element for transferring abrasive materials such as concrete, inert materials or suchlike, wherein the tubular element comprises an internal tubular component made of chromium carbide or other wear-resistant material, and an internal tubular component in contact with and coaxial to the internal tubular component and made of composite material.

A large manipulator includes a chassis, a turntable arranged on the chassis and rotatable around a vertical axis via a rotary drive, and an articulated mast including two or more mast segments pivotably-movably connected, via articulated joints, with the respectively adjacent turntable or mast segment via a respective drive. The large manipulator further includes a mast sensor system configured to detect position of at least one point of the articulated mast or a pivot angle of at least one articulated joint and configured to generate sensor output signals. The large manipulator further includes a control device configured to actuate the drive in a normal operation for mast movement and to limit speed of movement of the articulated mast depending upon the sensor output signals. The drive is manually controllable in an emergency operation. The large manipulator further includes at least one limiting means, which, in the emergency operation, limit speed of the drive to a pre-specified maximum value.

The invention relates to a method and to a delivery apparatus for carrying out the method, wherein the delivery apparatus comprises an eccentric screw pump having a rotor-stator unit with an outlet, a drive unit, a control device and a delivery section, and wherein the delivery apparatus comprises at least one pressure sensor and a characteristic-variable detection device.

A method to make a tubular element to transfer abrasive materials such as concrete, inert materials or suchlike, where the tubular element includes an external tubular component made of steel and an internal tubular component, coaxial to the external tubular component, where the internal tubular component is made of chromium carbide, or other similar material resistant to wear.

A large manipulator includes a chassis, a turntable arranged on the chassis and rotatable around a vertical axis via a rotary drive, and an articulated mast including two or more mast segments pivotably-movably connected, via articulated joints, with the respectively adjacent turntable or mast segment via a respective drive. The large manipulator further includes a mast sensor system configured to detect position of at least one point of the articulated mast or a pivot angle of at least one articulated joint and configured to generate sensor output signals. The large manipulator further includes a control device configured to actuate the drive in a normal operation for mast movement and to limit speed of movement of the articulated mast depending upon the sensor output signals. The drive is manually controllable in an emergency operation. The large manipulator further includes at least one limiting means, which, in the emergency operation, limit speed of the drive to a pre-specified maximum value.

The present invention is a new method to efficiently reclaim cement from a horizontal warehouse. This new reclaiming method combines a mechanical cement reclaiming machine, together with a reduced amount of open air slides. Material is fluidized through a porous media with low pressure air. Material flow is achieved by sloping the Air slide conveyor to match the fluidized angle of repose of the powdered material. Further, the present invention introduces a conveying system, comprising a cascade of open and enclosed air slides and elevator machines, to convey the cement from the reclaiming area to a dispatch hopper. The introduction of these components, together with cement stacking and dispatch systems, is a Fully Automated Cement Horizontal Storage system and method.

A method and apparatus for producing a curved tubular segment includes obtaining a curved external tubular element and a curved internal tubular element. The curved internal tubular element is made of a material having a resistance to wear greater than that of the curved external tubular element and has a cross section such as to cover at least part of the internal surface of the curved external tubular element. The curved internal tubular element is inserted inside the curved external tubular element after heating the latter by a heating unit. To form the curved external tubular element on the exact geometry of the curved internal tubular element, a molding unit and a cooling unit are used to obtain a curved tubular segment without spaces between the curved external tubular element and the curved internal tubular element.

A method and apparatus for producing a curved tubular segment includes obtaining a curved external tubular element and a curved internal tubular element. The curved internal tubular element is made of a material having a resistance to wear greater than that of the curved external tubular element and has a cross section such as to cover at least part of the internal surface of the curved external tubular element. The curved internal tubular element is inserted inside the curved external tubular element after heating the latter by a heating unit. To form the curved external tubular element on the exact geometry of the curved internal tubular element, a molding unit and a cooling unit are used to obtain a curved tubular segment without spaces between the curved external tubular element and the curved internal tubular element.