Abstract:
A mixing drum includes a body defining a head aperture and a discharge aperture opposite the head aperture, a head coupled to the body and extending across the head aperture, a bearing member coupled to the body and defining a bearing surface surrounding the body, and a mixing element positioned within the volume and coupled to the body. The head and the body define a volume configured to contain a fluid mixture. The mixing element is configured to drive the fluid mixture toward the head when the drum is rotated in a first direction. The mixing element is configured to drive the fluid mixture towards the discharge aperture when the mixing drum is rotated in a second direction opposite the first direction. The head is made from a first material, and the body is made from a second material having a lesser density than the first material.
Abstract:
본 발명은 콘크리트 타설용 믹서 트럭의 감속기에 대한 것으로서, 특히 믹서드럼과 상기 믹서드럼을 지지하는 커버플렌지를 포함하는 감속기의 경전 중심이 감속기 후방에 위치하도록 형성하여 진동, 하중, 충격, 출력, 기타 부하에 강한 성능을 갖도록 하는 감속기에 대한 발명이다.
Abstract:
The application concerns a system for measuring the rotational speed of a drum rotatably mounted to a mixer truck, rotating relatively to the mixer truck and having a main axis inclined relative to the mixer truck, even in case that the drum is empty. A sensor is mounted to the empty drum and generates a sinusoidal signal as the drum rotates; the sensor could be a load sensor experiencing forces due to the changing influence of gravity during rotation, or a light intensity sensor responsive e.g. to variations of ambient light during rotation. The sensor signal is transmitted over a wireless connection to a receiver. The frequency of the sinusoidal signal is measured and output as the rotational speed of the rotating drum. The application also concerns the determination of a direction of rotation, based on a phase shift between two periodic signals. One signal could be the periodic intensity variation on a first wireless transmission path during a full rotation. The other could be a periodic intensity variation on a second wireless transmission path, or a periodic variation of a sensed value such as the output of a load sensor or light intensity sensor.
Abstract:
The present invention relates to an aggregate preheater comprising: a main body having an upper surface portion formed to be open such that a feed port through which aggregates are fed is provided, having a rear surface portion formed to be open such that a discharge port through which the completely preheated aggregates are discharged is provided, and having a plurality of mixing screws rotatably provided therein; a preheating part comprising a passage forming member provided in a form of surrounding the outer surface of the main body and forming a passage in which heat flows, and a burner provided at one end of the passage forming member and generating heat; and an inclined driving part for arranging the main body and the preheating part such that the main body and the preheating part are selectively inclined with respect to the ground so as to discharge the completely preheated aggregates to the outside of the main body through the discharge port. Therefore, the aggregates fed therein are poured into a mixer after the aggregates are uniformly preheated while being transferred to the mixer, such that moisture contained in the aggregates is removed and the temperature of the aggregates is increased, and thus the aggregates are sufficiently coated with an asphalt binder in the mixer, quick agitation is simultaneously performed, and the aggregates are uniformly preheated although the aggregates are fed from different positions.
Abstract:
Die Erfindung betrifft eine Fahrmischerpumpe (10) mit einem Fahrzeugchassis (14) und einem auf dem Fahrzeugchassis angeordneten Fahrzeugaufbau, der einen Aufbaurahmen (16) und darauf angeordnet einen Mastbock (22) für einen Materialverteilermast (26), eine Mischertrommel (24) mit einem in Fahrtrichtung gesehen vorderen und einem hinteren Trommelauflagerbock (18, 20) sowie eine einen Motor und Getriebe aufweisende Antriebseinheit für die Mischertrommel (24) aufweist. Um eine Längenanpassung des Aufbaurahmens in einer späten Produktionsphase zu ermöglichen, wird gemäß der Erfindung vorgeschlagen, dass der Aufbaurahmen (16) eine zwischen dem Mastbock (22) und dem vorderen Trommelauflagerbock (18) angeordnete Trennstelle (56, 56') aufweist.
Abstract:
Die Erfindung bezieht sich auf eine hydraulische Verstell- und Reversiereinheit in der Gestalt einer Hydraulikpumpe oder eines Hydraulikmotors mit einem Verstellorgan (34), die insbesondere für den Drehantrieb einer Mischtrommel (18) eines Fahrbetonmischers (10) bestimmt ist. Das Verstellorgan (34) dient zur stufenlosen Durchflusssteuerung und wird über einen Verstellmechanismus (40) betätigt. Zu diesem Zweck ist der Verstellmechanismus (40) mit seinem einen Ende an das Verstellorgan angeschlossen und weist an seinem hiervon entfernt angeordneten anderen Ende ein Stellglied (36, 38) auf. Eine Besonderheit der Erfindung besteht darin, dass der Verstellmechanismus (40) zwei unabhängig voneinander von unterschiedlichen Bedienstellen aus mechanisch betätigbare Stellglieder (36, 38) sowie eine Kupplungseinrichtung (42) aufweist, über welche wahlweise jeweils eines der Stellglieder (36, 38) mit dem Verstellorgan (34) kuppelbar und das andere zugleich von diesem entkuppelbar ist.