Abstract:
The invention relates to a feed system, rack bar and drive sprocket for moving an underground winning machine, comprising a travel drive with drive sprocket having symmetrically profiled teeth, and rack bars 1 with a plurality of rack teeth 2; 20, being arranged between a supporting strip 7 and a guide strip 5 of the rack bar. The tooth flanks 14; 24 of the teeth 2, 20 are inclined in the direction of movement and diverge towards the tooth tip 13; 23 for the interaction with tooth surfaces 34 of teeth 31 of drive sprocket 30. In order to provide a feed system, including rack bars and drive sprockets therefor, in which interaction between the teeth is improved and produces less wear, the two tooth flanks 14, 24 of each rack tooth 2, 20 are concavely arched and form a trough between guide strip 5 and supporting strip 7 transversely to the direction of movement, with the trough rising towards the tooth tip 13; 23, and the two tooth surfaces 34 of each drive sprocket tooth 31 is convexly arched and forms a crown transversely to the direction of movement.
Abstract:
The invention relates to rack and pinion arrangement for advancing e.g. a shearer loader comprising a toothed driving sprocket, with rack and pinion rods (1) having a plurality of lantern teeth (2), a respective end tooth (20) being arranged at both ends (6, 6A) of each rod (1), the end tooth profile of the end tooth differing from the tooth profile of the inner teeth (2) arranged between the end teeth (20). The invention relates also to the rack and pinion rods. In order to improve interaction between the teeth of the sprocket and the rods, the end teeth (20) are formed symmetrically to a vertical end tooth centre plane (M') and the tooth head (23) of the end teeth (20) is positioned lower than the tooth heads (13) of the inner rack and pinion teeth (2).
Abstract:
Synchronführung eines in einem Korpus (24) eines Möbels oder Haushaltsgerätes über Auszugsführungen (1) gelagerten Schubelements (25), mit zwei sich gegenüberliegenden, jeweils einer Korpuswange zugeordneten, ortsfesten Zahnstangen (8), in die Zahnräder (9) eingreifen, die über Koppelstangen (26) miteinander verbunden sind, wobei die Zahnräder (9) ortsfest an den Laufschienen (2) der Auszugsführungen (1) gelagert sind.
Abstract:
A refrigerator with a home bar is provided, the refrigerator comprising: a main body of the refrigerator having a cooling chamber; a refrigerator door configured to open or close the cooling chamber and having an opening; and a home bar including a housing coupled to the opening and having a storage space therein, a home bar door for opening or closing the opening, and a home bar door driving unit for driving the home bar door to open or close the opening, whereby a gap increasing between the home bar door and the opening can be avoided so as to prevent leakage of cold air.
Abstract:
L'inverseur de poussée (1 ) comprend une ouverture munie de grilles (4) fixes qui, en situation de poussée directe, est fermée par un capot coulissant (2) et qui, en situation d'inversion de poussée, est dégagée par déplacement en translation longitudinale vers l'aval du capot (2). Un volet (20) est monté pivotant par une extrémité amont sur le capot (2) entre une position rétractée et une position déployée dans laquelle, en situation d'inversion de poussée, il obture un canal annulaire (10) en vue de dévier un flux de gaz vers l'ouverture à grilles (4). Un coulisseau (24) d'entraînement du volet (20) est monté mobile dans au moins une glissière (33) de guidage en translation ménagée dans une structure du capot (2), et est relié à une extrémité aval du volet (20) par l'intermédiaire d'une bielle d'entraînement (30), de sorte qu'un mouvement de translation du coulisseau (24) dans sa glissière de guidage (33) s'accompagne d'un pivotement de la bielle (30) et par conséquent du volet (20). Des moyens d'actionnement (22) sont prévus pour entraîner le coulisseau (24) en translation dans sa glissière de guidage (33) lorsque le capot (2) est dans une phase de translation vers l'aval.
Abstract:
A spindle assembly drive system that includes a rack unit, a drive gear, a motor, and a plurality of bearings, such that said rack unit laterally moves in a first axis with little or no movement in or rotation about any other axis.
Abstract:
A device for torquing a tubular connection. The device comprises an upper assembly having an upper jaw member, a lower assembly having a lower jaw member, an upper gear for advancing the upper jaw member, and a lower gear for advancing the lower jaw member. The upper jaw member includes a first jaw operatively associated with a first rack, a second jaw operatively associated with a second rack, and a third jaw operatively associated with a third rack. The lower jaw member includes a fourth jaw operatively associated with a fourth rack, a fifth jaw operatively associated with a fifth rack, and a sixth jaw operatively associated with a sixth rack. A method of torquing a first tubular with a second tubular is also disclosed.
Abstract:
An actuator including a plurality of mounts (42-50) for facilitating connection of the actuator to a variety of mounting bracket configurations for securing the actuator within an assembly. Also provided is a clutch assembly (26) including an input member (90), an output member (80),and pawls (104). Torque is transferred through the clutch when applied to the input member in a clockwise or counter-clockwise direction. When torque is applied to the output member, the clutch permits rotation in only one direction of rotation.
Abstract:
ZusammenfassungEin Spindel- oder Schneckenantrieb für Verstelleinrichtungen in Kraftfahrzeugen ist mit einer feststehenden Spindel oder einer feststehenden Zahnstange an einem ersten von zwei relativ zueinander verstellbaren Teilen befestigt und weist ein Getriebe auf, das mit dem zweiten der relativ zueinander verstellbaren Teile verbunden ist. Das Getriebegehäuse ist spielfrei und um mindestens eine Achse schwenkbar von einer Lagerschale (5, 6) eingefasst, die aus zwei ineinander steckbaren Lagerplatten (5, 6) besteht, die nach der Einfassung des Getriebegehäuses (4) miteinander verbindbar sind. Das Getriebegehäuse (4) besteht aus Kunststoff und weist ein konkaves oder konvexes Gehäuseteil (42, 43) auf, das von einem konvexen oder konkaven Lagerschalenabschnitt (54, 64) der aus einem zur Aufnahme von Crashkräften geeigneten Werkstoff, insbesondere aus einem metallischem Werkstoff, bestehenden Lagerschale umfasst ist.
Abstract:
A rotary flow control valve (10) including a valve spool (12) which is rotated back and forth to move a port (12b) in the valve spool (12) into and out of alignment with the main fluid passageway (20a) of the valve (10) to selectively open and close the valve (10). The spool (12) has a pinion gear (12c, 12f) at each end of the spool (12) and each pinion gear (12c, 12f) is engaged by a pair of racks (40a-40e) with the racks (40a-40e) in a pair moving at any given time in opposite directions. Each rack (40a-40e) is constitued by spaced rack teeth (40e) formed in the side wall (40d) of a piston (40) slidably mounted in a cylinder bore (16b, 16c, 18b, 18c) in the valve body (16, 18), and the rotaiton of the valve spool (12) is achieved by selective routing of pressurized fluid to the cylinder bores (16b, 16c, 18b, 18c) containing the pistons (40) defining the racks (40a-40e).