摘要:
A method is described for controlling a hydraulic system, particularly of mobile working machine, with at least one internal combustion engine driving at least one hydraulic pump with adjustable volumetric displacement and possibly additional fixed-displacement pumps.
摘要:
With a hydrostatic multi-motor drive unit with a least two hydraulic motors acting upon a common load, a solution should be created, with which a further operating range is covered by the use of several motors and at the same time a simple as possible and problem free coupling of the motors is assured. Furthermore, a method for controlling the drive unit is indicated, which permits continuous transitions between the different operating ranges. This is achieved in that the motors (2, 3) are connected with each other through at least one freewheel device (4), in which the motor (2) arranged after the freewheel device has a variable displacement volume.
摘要:
A hydraulic steering device for vehicles, especially construction machines, with which is simple and robust mechanically and can be precisely controlled, without possessing the disadvantages of the current state of the art. A hydraulic swivelling motor for producing the steering motion, which is connected to a variable flow rate pump with reversal of its direction of delivery.
摘要:
A composite armor element for protection against projectiles. At least one layer of effective bodies is disposed in rows next to one another in the composite armor element, the effective bodies being embedded in a matrix material. The effective bodies of one row are fixedly interconnected at least partially by means of webs to form a chain which is a monolithic element. An effective body element for insertion in a composite armor element comprises at least two effective bodies fixedly interconnected by at least one web to form a chain. The effective body element is a monolithic element, and a plurality of effective body elements are embedded in a matrix material.
摘要:
A device for the variable setting of the control times of gas exchange valves of an internal combustion engine, having an inner rotor (3) and an outer rotor (4), with one of the components being rotationally fixedly connected to the camshaft (2) and the other component being drive-connected to a crankshaft, the outer rotor (4) being rotatably mounted on the inner rotor (3) and, at least one hydraulic chamber (7), which is delimited by side walls (5, 6) and the inner rotor (3), is formed on the outer rotor (4), the inner rotor (3) comprises a hub part (3b) and at least one vane (3a), with a vane (3a) of the inner rotor (3) extending into each hydraulic chamber (7) and dividing the latter into two pressure chambers (10, 11) which act counter to one another. A groove (8) is formed on a face, which faces toward the other component, of the inner rotor (3) or of the outer rotor (4), in which groove (8) is arranged a sealing strip (9), and with a spring element (13) being arranged between a groove base (12) of the groove (8) and the sealing strip (9), which spring element (13) forces the sealing strip (9) in the direction of an opposing face of the other component with the spring element (13) simultaneously being designed as a sealing element.
摘要:
A panel, particularly a floor-covering panel, is provided that has separate horizontal and vertical locking structures. The panel has a first side edge and a second side edge. The first side edge has a groove and a locking lip, and the second side edge has a tongue and a locking tongue. The first side edge of one panel interlocks with the second side edge of another panel without adhesives or fasteners such that the tongue and groove form a joint that provides a vertical interconnection lock and the locking lip and locking tongue form a joint that provides a horizontal interconnection lock. Advantageously, one or more first side edge surfaces opposite surfaces of the second edge locking tongue have a space between them. The separate horizontal and vertical locking structures reduces, if not prevents, damage to the locking structures during joining of panels.
摘要:
A camshaft adjuster (1) is disclosed that has material openings (5) in the vanes (4) of the drive element (2), with these openings being divided into two sub-spaces (12, 13), wherein one sub-space (12) is provided for the penetration of a connecting element (6) and the other sub-space (13) does not allow the penetration of a connecting element (6).
摘要:
A camshaft adjuster (1) for an internal combustion engine of a motor vehicle with a radially outer stator (4) that can be driven by the crankshaft, a radially inner rotor (5) connected locked in rotation with the camshaft (2), working chambers (6) that are arranged between the rotor (5) and the stator (4) and that can be pressurized with a pressure such that the relative rotational position of the rotor (5) to the stator (4) is adjustable, at least one seal cover (7) bordering the working chambers (6) on the sides and contacting the rotor (5) and the stator (4) in a sealing way, with an annular disk-shaped base body (13) and an annular projection (9) encompassing the camshaft (2) and adjacent to the radial inside of the base body (13). The base body (13) contacts, with a seal surface (D), the rotor (5) and transitions via a radius (10) into the annular projection (9). A bead (11) is provided on the annular disk-shaped base body (13) on the side facing away from the rotor (5) in the region bordering the annular projection (9).
摘要:
The invention relates to a hydraulic control system for building machinery, particularly for controlling hydraulic consumers of an excavator. According to the invention, pump channels which ensure that the hydraulic consumers are supplied in parallel by means of a spool valve of the main control unit of the piece of building machinery are provided in addition to previously existing pump channels that ensure said hydraulic consumers are serially supplied with hydraulic fluid. The additional pump channels are arranged parallel to the previously existing ones.