摘要:
Railcar monitoring utilizes instrumented, flexible pads supported within the truck pedestal jaws on the bearing adapters. The pads contain sensors for monitoring temperature pressure, shifting loads, truck hunting and the like and have circuitry for processing information received from the sensors and for processing and reporting departures of performance variables to a remote source. The system cyclically activates polling each pad on a car and communicates signals of critical departures and car identity to a remote source.
摘要:
A mounting plate fixed to a longitudinally extending rail is secured by a plurality of bolts in a substrate. The mounting plate is formed at each bolt with an array of ridges. An adjuster plate formed with a vertically throughgoing transversely elongated slot through which the respective bolt extends has a lower face formed with an array of downwardly projecting generally complementary to the ridges of the mounting plate and an upper face formed with a central recessed seat defined between two longitudinally extending and parallel edges at a predetermined transverse spacing. A gauge plate formed with two parallel outer edges spaced apart by a distance substantially equal to the transverse spacing of the seat edges and with an eccentric circular hole of a diameter substantially equal to an outer diameter of the shank of the respective bolt that extends vertically through the circular hole fits in the seat.
摘要:
A method of forming a mold for use in the casting of a steel railway freight car truck component is provided. A cope mold is formed by providing a near net shape oversize impression of a cope pattern of a product to be cast in a flask. A cope pattern of the product to be cast is then placed on the flask forming a spacing between the cope pattern and the oversize impression. A resin coated sand is then blown to form a sand layer between the oversized impression in the flask and the cope pattern. The resin sand is set to form a mold of a thickness between the oversized impression in the flask and the cope pattern of the product to be cast. The drag mold is formed in a similar manner.
摘要:
A method of forming a mold for use in the casting of a steel railway freight car truck component is provided. A cope mold is formed by providing a near net shape oversize impression of a cope pattern of a product to be cast in a flask. A cope pattern of the product to be cast is then placed on the flask forming a spacing between the cope pattern and the oversize impression. A resin coated sand is then blown to form a sand layer between the oversized impression in the flask and the cope pattern. The resin sand is set to form a mold of a thickness between the oversized impression in the flask and the cope pattern of the product to be cast. The drag mold is formed in a similar manner.
摘要:
A method of forming a mold for use in the casting of a steel railway freight car truck component is provided. A cope mold is formed by providing a near net shape oversize impression of a cope pattern of a product to be cast in a flask. A cope pattern of the product to be cast is then placed on the flask forming a spacing between the cope pattern and the oversize impression. A resin coated sand is then blown to form a sand layer between the oversized impression in the flask and the cope pattern. The resin sand is set to form a mold of a thickness between the oversized impression in the flask and the cope pattern of the product to be cast. The drag mold is formed in a similar manner.
摘要:
A rail seat includes a concrete rail tie; a pair of rail clip support shoulders cast in place in said rail tie each said shoulder having a rail face between its external sides; a pair of shoulder insulators each shaped to lie against the rail face of the rail shoulder; a pair of rail clips each having a base section adapted to seat within the rail clip support shoulder and a toe section adapted to seat on the rail base. The clip and toe insulator assembly is loaded on the shoulder in a vertical direction so that parts of the toe insulator seat within pockets in the shoulder that enable the clip and insulator assembly to move laterally towards the rail but not away from it and the clip base is aligned with the shoulder slot ready to enter it when the clip is moved laterally to the parked position which applies a small downward force to the clip toes and at this stage lie outside the limits of the rail base and finally the clip can be moved laterally into the installed position where the toe insulators sit on top of the rail base and securely hold it down.
摘要:
A bearing assembly is presented having a novel bearing seal design that, in one embodiment, combines the sealing advantages of both a labyrinth-like seal in combination with a contact seal. The seal is held perpendicularly to the sealing surface, and in one embodiment, substantially divides the sealing forces equally between the lubricant seal portion and the dust seal portion of the seal by virtue of the symmetry of the seal geometry and the application of the resisting force substantially along the seal body's centerline. The seal departs from the cantilever geometry of prior art seal designs, and in one embodiment, provides an inherently stiffer seal.
摘要:
A railcar cushioning device has a hydraulic cylinder holding pressurized fluid. The cylinder has a cylinder body with an inner chamber and a reservoir chamber. A piston is movably positioned in the inner chamber. The cylinder body has a bleed opening allowing bleed flow from the inner chamber to the reservoir chamber. A bleed orifice valve in the bleed opening has a valve housing and a poppet received in the valve housing that moves to allow and restrict fluid flow through a bleed flow path based on the pressure of the fluid. The poppet has an orifice channel allowing a restricted fluid flow through the valve housing when the pressure in the inner chamber is greater than the pressure in the reservoir chamber.
摘要:
An improved side bearing for railway cars is provided that achieves improved tracking and curving by the limitation of rock of the railway car. The side bearing comprises a base with a generally upwardly extending wall portion. A cap comprising a top section with generally downwardly extending wall portion is provided. The cap extends into or around the wall section of the base. A spring is provided within the base that extends to the underside and supports the cap. A base insert is provided of varying thickness to support springs of the same preselected height to provide preselected varying load capacities.
摘要:
Railway coupler knuckle apparatus are described herein. An example railway coupler knuckle includes a tail portion, a hub portion and a transition portion joining the tail portion and the hub portion. The hub portion includes a generally cylindrical pivot pin passage having a longitudinal axis. The railway coupler knuckle has a cavity formed inside the tail portion and at least a portion of the transition portion and a first wall extends between surfaces of the cavity adjacent the transition portion.