Abstract: An axlebox-spring-unit of a railway bogie includes at least one hydraulic spring having a housing required for functionality of the hydraulic spring, and an axlebox. At least a part of the axlebox forms at least a part of the housing.

Abstract: An air spring rolling-lobe flexible member, which is made of elastomeric material, has a reinforcement arrangement which is embedded in the flexible member wall (1). The reinforcement arrangement extends along the entire length of the flexible member and is of rubber-coated cord fabric layers (3, 4). The flexible member has a non-symmetric reinforcement arrangement wherein the one outer fabric layer (3) or the several outer fabric layers has/have a stress-elongation characteristic which is different from that of the one inner fabric layer (4) or the several inner fabric layers.

Abstract: An air spring (2) essentially includes two end elements (4, 6) and an electrically conductive rolling-lobe flexible member which is pressure-tightly arranged therebetween and is made of a flexible elastomeric electroconductive material (14). A reinforcement (16) formed by two cord fiber plies (16a, 16b), which are made of fibers (18), are vulcanized into the flexible member. In order to determine the height (h) of the spring, preferably, the two cord fabric plies (16a, 16b) are provided with a number of highly conductive fibers (18a) which are arranged at the beginning and the end of each ply in a parallel direction to each other, thereby forming two conductive strips (24a, 24b). The conductive strips (24a, 24b) are disposed oppositely to each other and are electrically connected at the end of the rolling-lobe flexible member (8) in such a way that a conductive loop (24) is formed and each strip is used as an element in a branch for an alternating-current measuring bridge (28).

Abstract: A flanged plate (1) for a rolling-lobe air spring has on its rounded portion an annular, closed, concave, rounded holding recess (13) which has a circular arcuate shape. The plate is provided with the recess before surface treatment. A correspondingly shaped holding bead (16) in the upper flanging tool (3) engages in this holding recess and form-tightly holds the tool (3) and the flanged plate (1). In this way, sharp-edged holding grooves, which can damage the surface of the flanged plate, are unnecessary. The flanging method, the flanging device, the flanged plate and the rolling-lobe air spring provided with a flanged plate of the above type are described.

Abstract: The invention relates to a rubber-sprung rail wheel having a wheel tire (1), which has a peripherally-extending web (3) on the inner side (2) thereof, and a wheel rim (4) provided with two legs (6, 7) on the outer side (5) thereof, and two rubber rings (8, 9) that are arranged between the wheel tire (1) and the wheel rim (4). The rubber rings (8, 9) are arranged on both sides of the web (3) and are laterally delimited by the legs (6, 7). A first gap (12) is formed between the inner side (2) of the wheel tire (1) and the end edges (10, 11) of the legs (6, 7) and the rubber rings (8, 9) and a second gap (12) is formed between the outer side (5) of the wheel rim (4) and the end edges (13, 14) of the web (3) and the rubber rings (8, 9). The web (3) and the legs (6, 7) are configured in such a way that the rubber rings (8, 9) are inclined with respect to the central plane of the web (3).

Abstract: An air spring has a roll-off piston (1) and a rolling-lobe flexible member (2) of rubber or rubber-like material. At least the opening of the rolling-lobe flexible member, which lies opposite the opening assigned to the roll-off piston (1), is closed air tight with an attachment part (3) and the attachment part has a planar connecting region (4) having at least one air connection (7) and an outer rim (11) and a conical region (10) facing toward the rolling-lobe flexible member (2). The rolling-lobe flexible member (2) is tightly vulcanized to the attachment part (3) in a vulcanization region (12) which extends from the side (9) of the outer rim (11) into the conical region (10). The side (9) of the outer rim (11) faces toward the rolling-lobe flexible member (2). The at least one attachment part (3), which is vulcanized to the rolling-lobe flexible member (2), is configured as a head plate (3) complete with all connections (7) and is made of thermoplastic or duroplastic synthetic material.

Abstract: A spring element (2) consists essentially of an elastic spring body (4) which is fixed between two rigid end parts (6, 8) arranged at a variable spacing from each other. The spring body (4) consisting of rubber or a rubber-type plastic has a rotationally symmetrical cross section, the longitudinal section shows a biconvex surface line. A U-shaped cross section is formed as a result of a cavity (10). The abrasion caused by the introduction of vertical and horizontal forces is to be reduced and an easy, horizontal slide is to be made possible. The surface (12) of the spring body (4) is provided with ribs (14; 14a, . . . ) that are arranged at spacings (A) from each other and are intersected by ribs (16; 16a, . . . ) or groups of ribs (16, . . . ) also arranged at spacings (A) from each other. Polygonal fields (18a, . . . ) are formed on the surface (12) of the spring body (4) in the gaps between the ribs (14, . . . ; 16, . . . ) according to the angle of intersection.

Abstract: In a sleeve rolling-lobe flexible member air spring (2) at least one end section (4a, 4b) of the sleeve rolling-lobe flexible member (4) is to be attached in a reliable manner form tight, pull tight and pressure tight to a connecting part (air spring cover, 8 and/or roll-off piston, 10) by means of a clamp ring (6). The connecting part (8, 10) has an attachment slot (12) having the following characteristics: (a) the slot (12) has a truncated cone-shaped cross section, (b) the base (14) of the slot (12) is cylindrical, and (c) at least one of the flanks (16a, 16b) of the slot (12) forms a linear conical form with an opening angle (?); (d) in relation to the height (Hs) of the clamp ring (6), the height (HN) of the base surface (14) of the slot (12) is in the region of ?15% to +15%, that is, 0.85?HN/HS?1.

Abstract: A railway bogie includes at least two spring units per one wheel, a bogie frame and an essentially single piece adapter which bridges the spring units and is arranged between the spring units on the one side and the bogie frame on the other side.

Abstract: Tubular-shaped flexible members for air springs are made of rubber or rubber-like elastomers and are reinforced by reinforcement layers. In order that the air spring flexible member can roll telescopically off a roll-off piston, the tubular-shaped flexible member sections must be brought into a slightly conical or bottle-like configuration and then vulcanized in this form. A method forms and vulcanizes an air spring flexible member blank and utilizes an apparatus which includes a mold defining a bellied inner wall defining a common hollow space for receiving the air spring flexible member blank therein. A pressure bellows unit includes a pressure bellows extending axially in the common hollow space as well as first and second end pieces joined to the pressure bellows at corresponding longitudinal ends thereof.

Abstract: A flanged plate (1) for a rolling-lobe air spring has on its rounded portion an annular, closed, concave, rounded holding recess (13) which has a circular arcuate shape. The plate is provided with the recess before surface treatment. A correspondingly shaped holding bead (16) in the upper flanging tool (3) engages in this holding recess and form-tightly holds the tool (3) and the flanged plate (1). In this way, sharp-edged holding grooves, which can damage the surface of the flanged plate, are unnecessary. The flanging method, the flanging device, the flanged plate and the rolling-lobe air spring provided with a flanged plate of the above type are described.

Abstract: An apparatus and method for separation of tubes produced continuously on a row of mandrels, continuously coupled to one another, by the mandrels being advanced in a conveying direction (X) and by material layers being applied to the mandrels. A material difference exists from the mandrel material at a connection point of successive mandrels. A measuring device detects the connection point of the successive mandrels, and a separating device, arranged downstream of the measuring device in the conveying direction (X), provides for the separation of the tubes. The separating device is controlled by the measuring device in order to align the separating device with the connection point. The separating device has a cutting head rotatable about the connection point, and advances in the conveying direction (X) synchronously with the mandrels during the separating operation.

Abstract: An arrangement (1) for guiding individual reinforcement filaments (2) onto a carrier (3) has a positioning disc (4) with a plurality of filament guides (9) arranged distributed on a circular ring of the positioning disc (4). The carrier is moveable in the direction of the carrier axis (X). The arrangement also includes a rotationally symmetrical deflecting element (5). The positioning disc (4) and the deflecting element (5) each concentrically surround the carrier (3). The deflecting element (5) is mounted within the positioning disc (4) and aligned axially to the positioning disc (4). The inlet-end peripherally extending inner edge (6) of the deflecting element (5) faces toward the carrier (3) and is curved. The filament guides (9) open directly at the curved inner edge (6).

Abstract: An air spring includes a flexible member, a roll-off piston and a cover plate. The piston includes a slot at its upper end for receiving the end of the flexible member applied with the aid of a clamp ring. The piston includes a flange for deflecting the flexible member. The outer diameter of the flange corresponds approximately to the outer diameter of the clamp ring and the roll-off diameter of the piston. The flexible member is tapered at its lower region to avoid an uncontrollable collapse in the pressureless state of the air spring or a sharp snap-in of the flexible member exiting from the attachment. The flexible member exits at approximately 90° in the radial direction from the attachment. The peripheral slot and the flange are so configured that, in the pressureless state, a clear diameter jump is present between clamping diameter and diameter of the remainder of the flexible member.

Abstract: A spiraling arrangement (1) for applying a spirally-shaped filament layer to an elongated carrier (2) which is drivable in the direction of the carrier longitudinal axis (X). The arrangement has a rotor (3), which is rotatable about the carrier longitudinal axis (X), and a plurality of filament bobbin carrier shafts (5) which extend in the direction of the carrier longitudinal axis (X). The carrier shafts (5) are arranged distributed on a circumscribed circle radius of the rotor (3) and are each configured to take up a plurality of filament bobbins (7). On one end face (6a) of the rotor (3), filament brake elements (10) are arranged distributed over the periphery and can be driven synchronously with respect to each other. The filaments (8) are taken off the filament bobbins (7) and are guided by filament guide elements (9) via the filament brake elements (10) and an annular comb (12), which encloses the carrier (2), onto the carrier (2).

Abstract: An air spring rolling-lobe flexible member is made of elastomeric material and has at least two layers of intersecting reinforcement filaments. The reinforcement filaments are arranged in an essentially parallel manner to each other at an angle between 40° and 80° to the direction of the periphery of the rolling-lobe flexible member. At least one component quantity of the reinforcement filaments (1, 2) within one layer exhibits another strength compared to the remaining component quantity thereof.

Abstract: Tubular-shaped flexible members for air springs are made of rubber or rubber-like elastomers and are reinforced by reinforcement layers. In order that the air spring flexible member can roll telescopically off a roll-off piston, the tubular-shaped flexible member sections must be brought into a slightly conical or bottle-like configuration and then vulcanized in this form. A method forms and vulcanizes an air spring flexible member blank and utilizes an apparatus which includes a mold defining a bellied inner wall defining a common hollow space for receiving the air spring flexible member blank therein. A pressure bellows unit includes a pressure bellows extending axially in the common hollow space as well as first and second end pieces joined to the pressure bellows at corresponding longitudinal ends thereof.

Abstract: A vulcanization mold (2) includes several segments (8a, 8b; 10a, 10b; 12a, 12b; 14a, 14b) which define two end profiles (8, 10) and two inner profile shells (12, 14) having concave surfaces. With synchronous movement sequences, which take place via linear controls from both ends, the segments (8a, 8b; 10a, 10b; 12a, 12b; 14a, 14b) are moved together under simultaneous shaping pressure. The outer profile shells (8, 10) pass through twice the distance as the inner profile shells (12, 14). The forming of the work blank (20) is completed via the shaping pressure when the mold (2) has reached the closed position. Preferably the upper profile half shells (8a, 10a, 12a, 14a) and the lower profile segments (8b, 10b, 12b, 14b) are operatively connected to each other via toothed racks (40a, 46a, 48a, 54a; 40b, 46b, 48b, 54b) and gear wheels (42a, 44a, 50a, 52a; 42b, 44b, 50b, 52b) including additional sets of teeth (42a?, 50a?; 42b?, 50b?).

Abstract: The invention relates to a method and a device for the removal of a tube blank (3) located on a support core (2). The tube blank (2) is detached from the support core (2) by means of the introduction of a medium through a device (10), whereby a detachment may be alternatively or additionally achieved by the application of a vacuum to a sleeve (4) enclosing the tube blank (3).

Abstract: The invention is directed to a flexible pipe connecting unit which includes a part made of elastic workable material. The pipe connecting unit includes a wave-shaped or hose-shaped bellows (4) made of elastomeric material. The bellows (4) has respective projecting flange collars (14; 14 a, 14b) at its respective ends. The flange collars (14; 14a, 14b) preferably are provided with a reinforcement insert (16; 16a, 16b) and annularly-shaped pipe connecting pieces (flanges 18; 18a, 16b) are disposed behind corresponding ones of the flange collars. The pipe connecting unit (2) coacts directly with weld-on flanges as counter flanges (20; 20a, 20b) without additional seals or corresponding joining locations. For this purpose, the end sealing faces of the flange collars (14; 14a, 14b) are partitioned in the radial direction by a peripherally extending slot (28; 28a, 28b). In this way, at least two coaxial concentric annularly-shaped sealing surfaces (14-I, 14-II) are formed.