The invention relates to a paver for the paving of ground courses for roads or the like, having a chassis and a trailed floating screed which is articulated on the latter via tow arms and of which the angle of attack relative to the ground is capable of being adjusted via actuating cylinders and which comprises a basic screed and extendable screeds and/or attached screed parts, there being arranged between the rear region, as seen in the paving direction, of the chassis and the extendable screeds and/or the attached screed parts of each side at least one hydraulic supporting cylinder which, at the moment of start-up of the paver, is subjected to an adjustable hydraulic pressure

Paver for the paving of ground courses for roads or the like

System for fixing rotary die cutters in die cutting machines for cutting laminar
material, said system comprising fixing means between the die (1) and a die-holder
surface or cylinder (2) around which the die (1) is arranged, wherein the fixing
means include a plurality of bolts (3) actuated by an actuator (5) housed inside a
hollow body (8) fixed to the die-holder cylinder (2) in order to provide for a
rapid fixing of the rotary die to the die-holder cylinder.

System for fixing rotary cutting dies in machines for die cutting laminar material

Eine Glattbohlenanordnung weist eine Glattbohle und eine Glattbohlenverlangerung auf, wobei die Glattbohle an die Glattbohlenverlangerung gekoppelt ist. Die Glattbohle weist weiter einen oberen Rahmen und einen unteren Rahmen auf. Der untere Rahmen ist ausgelegt, um sich in einer im Wesentlichen vertikalen Richtung zu bewegen und eine Bewegung in einer im Wesentlichen vertikalen Richtung des unteren Rahmens fuhrt zu einer entsprechenden im Wesentlichen vertikalen Bewegung der Glattbohlenverlangerung.

Verschiebbares tragsystem für eine glättbohenverlängerung

Screed unit for paver finisher, of the type comprising a main screed, end plates and extension sectors which can be reciprocally aligned by means of adjusters and which can be reciprocally coupled. The main screed, end plates and extension sectors can be coupled and aligned by means of a coupling means operating according to a coupling system using fixing and clamping means with screws/bolts in fixing holes, in which alignment and disalignment means are provided of one unit to be coupled with respect to the other unit to be coupled with a movement with respect to the alignment axis, the alignment and disalignment means being linked/linkable to an undercut coupling means in which the coupling means consists of a male element and a female element, one of male element and female element being fixed in correspondence with at least one of the side-walls of the screed unit, the other one of male element and female element being fixed in correspondence with at least one of the side-walls of extension sector.

Screed unit for paver with a coupling system for extension sectors

The invention relates to a paving screed for a paver, with a basic screed and with at least one lateral extendable screed part which is connected to the basic screed via hydraulically actuable tensioners and the height of which can be adjusted by means of a height setting device which comprises vertical spindles which are coupled to the extendable screed part and are held on the basic screed rotatably relative to the latter, the spindles being adjustable via a common drive motor, it being possible, as a result of the actuation of the drive motor, to trigger a release of the hydraulically actuable tensioners for the duration of actuation and the extendable screed part being additionally connected to the basic screed via spring-biased screws.

Paving screed for a paver

A paver screed has a main screed with two outer side walls, at least one of the side walls being provided with insertion orifices for the releasable mounting of at least one lateral screed extension by means of fastening elements capable of being inserted through the insertion orifices. A screed extension has fastening elements that comprise hydraulic cylinders which each have a piston that is spring-biased into an initial, retracted position. The cylinders are actuated by hydraulic fluid to displace or extend the piston against the biasing action of the spring. Preferably, the hydraulic cylinders are connected a hydraulic circuit of the main screed. The piston of each hydraulic cylinder carries a shank capable of being inserted through a proximal insertion orifice and which are preferably provided with an abutment element configured for attaching the cylinder to the sidewall of the main screed.

Helmut Röwer

Papers

Screed for a paver