709results about "Track-braking member co-operation" patented technology

Brake equipment for holding and braking an elevator car in an elevator installation, which is arranged to be movable along a brake track in two directions of travel, includes a mount with a brake lining which automatically adjusts under friction couple with the brake track on movement of the elevator car relative to the rail and in that case tightens a first tightening means, which can be released by an actuator. The first tightening means tightens the mount together with the brake lining against the brake track by a biasing force. The brake equipment produces, with unmoved brake equipment and an unreleased state of the actuator, a holding force acting in both directions of travel. The holding force is determined substantially by the biasing force acting on the mount.

An elevator installation has braking equipment for braking and holding an elevator car which moves in vertical direction within guide tracks or rails. The braking equipment consists of at least two brake units each comprising a normal force regulation device that sets a normal force (F_N) in correspondence with a normal force value determined by a brake control unit and/or a locking device that locks the brake unit in a set braking position and which preferably maintains the set braking position in the case of an interrupted energy supply. The braking equipment provides a gentle braking or holding of the elevator car, which corresponds with the operational state of the elevator installation, with a low energy requirement.

A brake (10) having application for a linear or rotational motion device includes a housing (120) in which a first piston (140), a wedge (142) and a second piston (144) cooperate to engage a friction facing (136) through a plurality of rollers (152, 154, 156, 158). The three part piston assembly (148) allows a braking action and prevents torsional forces that are non-axial to the axis of the first piston (140) and second piston (144). The pistons (140, 144) are biased by compression springs (176) and may be actuated by a fluid.

The linear guide apparatus includes a guide rail 3 including a rolling body rolling groove 8 and a friction apply unit 6 assembled to the guide rail 3. The friction apply unit 6 includes a unit main body 15, a brake member 16, an oil pressure cylinder 17 and a plate spring 32. The brake member 16 is disposed so as to face the side surface 3a of the guide rail 3 and can be contacted with the other portions of the side surface 3a than the rolling body rolling groove 8 thereof. The oil pressure cylinder 17 includes a piston member 20 which is structured to be driven in a positive direction to thereby press the brake member 16 against the side surface 3a of the guide rail 3 and also the piston member 20 can be driven in the opposite direction to thereby remove the pressure of the brake member 16 from the side surface 3a.

A system comprising a cable held in suspension and a trolley traveling along the cable relies on a brake to control velocity and limit net downhill acceleration of the trolley. The trolley may include a brake pad positioned to contact the cable. At the downhill end of the ride, the lever actuating the brake is caught and lifted by a capture ring, thus relieving the braking load on the trolley. Also, the trolley engages a comparatively modest, second resistance mechanism, such as, for example, a system of springs, that gradually increases in resistance with distance of motion of the trolley thereagainst, bringing the trolley to a gradual halt at a rate to improve comfort of a rider and reduce acceleration forces (loads) on the trolley.

An elevator installation includes a guide rail and brake equipment for guiding, holding and braking the elevator installation. The brake equipment has a brake lining which co-operates with a brake surface, advantageously with the brake surface of the guide rail, for the purpose of the braking and holding. The brake surface has at least one longitudinal wedge groove or wedge elevation which is oriented in the braking direction and on which the brake lining acts in case of need. An amplification of the braking force is achieved by the longitudinal wedge groove or wedge elevation.

A magnetic levitation railway having an eddy-current brake (20) cooperates with a reaction rail (8) of the driveway (2). The eddy-current brake (20) has at least one brake magnet (21) which is movably mounted to the vehicle (1) and transversely to the reaction rail (8) and which is made to abut the reaction rail (8) if a normal force, for example, fixed by means of springs (27) is exceeded.

The invention discloses an electromagnetic magnetic rail brake and a control method of the electromagnetic magnetic rail brake. 2n electromagnets distributed in the vertical direction of a rail at equal intervals are arranged between the rail and a vertical beam, each electromagnet respectively consists of a magnetic core and at least two groups of excitation coils, the excitation coils are arranged in the axial direction of the magnetic core and have the same winding modes, the adjacent two electromagnets sequentially form one pair, a closed work magnetic path is formed by each pair of electromagnets, the vertical beam, the rail, and air gaps between each pair of electromagnets and the rail, all of the closed work magnetic paths have loop directions in sequential arrangement at intervals in opposite directions, in addition, axial lines of the closed work magnetic paths are respectively vertical to the vertical direction of the rail, all excitation coils in one closed work magnetic path are respectively connected with the same excitation module, all of the excitation modules are respectively connected with an electronic control unit (ECU), two sets of power supply circuits with a storage battery connected in parallel with a contact network are adopted for control, high braking reliability of high-speed rail vehicles during the emergency braking can be ensured, and the rail vehicles can reliably stop through consuming little energy during the parking.

The invention discloses a connecting device of a magnetic track brake and a magnetic track brake apparatus, belonging to the field of parts used for rolling stocks. In order to solve the problems of huge size, high production cost and complicated maintenance of the connecting device of the existing magnetic track brake apparatus, the connecting device of the magnetic track brake comprises a connecting rod component of which one end is connected to the bottom of an axle box body, and a spring regulating device and a wearing plate assembly are arranged at the other end of the connecting rod component, wherein the spring regulating device is used for regulating the vertical position of the magnetic track brake; and the wearing plate assembly is arranged on a bogie frame and used for limiting the horizontal and vertical displacements of the magnetic track brake. The magnetic track brake apparatus comprises the magnetic track brake, and two ends of the magnetic track brake are connected with the bottom of the axle box body respectively through the connecting devices of the magnetic track brake. The invention has the advantages of simple structure and low production and maintenance cost and is reliable to install, simple to debug and convenient to disassemble and maintain.

A bi-directional safety mechanism used in an elevator safety device and which produces a gradual catch on a guide rail. The bi-directional safety device has a roller and two hinged rectangular frames, each having a friction element. One hinged rectangular frame is disposed above the roller and the other hinged rectangular frame is disposed below the roller with both hinged rectangular frames on the same side of the guide rail. In addition, a set of fixed brakes are disposed on the other side of the guide rail and opposite to the hinged rectangular frames, preventing this system from marking the guide rail during the braking process.

A suspended patient-carrier/transport apparatus of the type including an overhead rail forming a horizontal track terminating at a track-end, and a carrier device supported by a carriage having a plurality of aligned rollers rideable along the track. The inventive suspended transport apparatus has a locking safety mechanism including the carriage having a main carriage portion and a forward carriage portion. A track-end detector is at the forward carriage portion and movably secured with respect thereto such that the track-end detector moves downwardly when it runs beyond the track-end. A locking device is operatively connected with respect to the track-end detector such that downward movement thereof causes the locking device to engage the rail thereby stopping the carriage on the track.

A mechanized vent for a dishwasher employs a vent plate moving about a hinge axis as driven by a cam mechanism at a surface of the vent plate removed from the hinge axis.

The invention discloses an active catcher which is characterized by comprising a frame, a primary brake, a secondary brake and a secondary braking starter; the bottom of the frame is respectively provided with a fixed pair wheel axle and a transmission pair wheel axle; the transmission pair wheel axle is fixedly provided with a first chain wheel; the first chain wheel is used for detecting a travelling speed of a series of cars, when the travelling speed of the series of cars is higher than a set value, the primary brake and the secondary brake are successively started, and safety braking is realized. The active catcher disclosed by the invention has simple structure, accurate speed measurement, stable braking and high safety and reliability.

The invention discloses a braking device for a railcar. The braking device is arranged on a wheel carrier of a wheel set of the railcar. The braking device for the railcar comprises a braking frame arranged on the wheel carrier, wherein the braking frame comprises a rail sleeve capable of half-encircling a steel rail; a T-shaped groove is formed in the rail sleeve; brakes fixedly connected to the rail sleeve are arranged between the inner top, the left side part, the right side part, the left bottom and the right bottom of the rail sleeve and the steel rail. The steel rail is half-encircled by the T-shaped groove of the rail sleeve, the T-shaped groove turns to the bottom side of the steel rail, the brakes are arranged on the inner side of the rail sleeve, and are positioned between the rail sleeve and the steel rail, and gaps are formed between the brakes and the steel rail when the railcar normally runs, and are pneumatically expanded to drive the brakes to be closely attached to the steel rail to encircle the steel rail from the top, the left side part, the right side part, the left bottom and the right bottom in case of emergency braking, so that the railcar is synchronously braked under equal pressure in five gears and five points in emergency, derailment and tailgating are avoided, damage to the steel rail at low gears is avoided, safety is ensured by sacrificing the steel rail at high gears, and higher reliability of braking within a visual distance is achieved.

The invention discloses a trailer bogie which comprises a frame, an axle box, a wheel set, a primary suspension, a secondary suspension, a brake device, a magnetic track brake device and a traction device. The frame comprises side beams and a transverse beam. Brake installation bases are arranged on the transverse beam. The brake installation bases include the upper brake installation base and the lower brake installation base. The upper brake installation base comprises a brake side plate and a brake top plate. The brake side plate extends upwards in an inclined manner from the transverse beam, is bent outwards and then extends towards the outer side. An open slot larger than the semicircle is formed in the outer end of the brake side plate. The brake top plate extends outwards from the transverse beam, is bent to extend upwards in an inclined manner and then is bent to extend towards the outer side. A cavity is formed between the brake side plate and the brake top plate. The magnetic track brake device comprises a first magnetic track fixing plate and a second magnetic track fixing plate. The trailer bogie can improve the rigidity of the brake installation bases, the brake device is conveniently assembled and disassembled, the installation stability of the brake device is good, the magnetic track brake device is conveniently assembled and disassembled, and the cost of the magnetic track brake device is lowered.

The invention relates to a mine vehicle braking device, and solves the problems of insensitive response, long braking time, low reliability and turnout adaptability and the like of the conventional anti-deviation equipment in the braking process. The device consists of an overspeed inductor, a safety pin, an extension spring, a positioning block, a compression spring, an L-shaped arc hook, a cross shaft driver, a driving chain wheel, a chain, a driven chain wheel and a brake, wherein the overspeed inductor is fixed on a rear shaft of a mine vehicle and detects an overspeed signal of the mine vehicle; the cross shaft driver is meshed with the driving chain wheel and drives the brake to work; a bidirectional screw simultaneously drives a left-handed driving block and a right-handed driving block to move to the middle; and the left-handed driving block and the right-handed driving block make a left braking block and a right braking block to swing outwards through a left connecting rod and a right connecting rod, and the left braking block and the right braking block clasp a rail to generate a braking effect. The device has the advantages of sensitive response, short braking time, high turnout adaptability and reliability and the like, is convenient to overhaul, and is mainly used for braking the mine vehicle in mine inclined well transportation operation.