Elastic ball block for railway freight-car bogie
Technical field
The present invention relates to a kind of elastic ball block for railway freight-car bogie, belong to a kind of accessory of rolling stock.
Background technology
Axle box suspension swing type railway freight car bogie adopts one to be spring suspension, be provided with rubber spring between framework and the axle box, because rail freight sky, loaded vehicle load differ greatly, rubber spring is under the prerequisite that guarantees loaded vehicle load, during empty wagons load, camber of spring is too small relatively, causes the Vehicular vibration performance bad.Thereby influence the riding quality of vehicle in operational speed range.
Summary of the invention
Camber of spring problem less than normal when the objective of the invention is the empty wagons load at axle box suspension swing type railway freight car bogie provides a kind of simple in structure, economical and practical and improve the elastic ball block for railway freight-car bogie of the natural bow of vertical spring.
Technical scheme of the present invention is: a kind of elastic ball block for railway freight-car bogie is characterized in that: described elastic ball block comprises steel spherical pieces, rubber metal pad, guide ring and mounting seat; The steel spherical pieces is the conical internal cavity semiglobe, and promptly conical internal cavity is provided with the center shaft that connects usefulness; Mounting seat is the taper mounting seat of band central shaft hole, on axis hole is interior circular groove is arranged, and its guide ring is arranged in the circular groove; Rubber metal pad is the rubber metal pad of pyramidal structure, and rubber metal pad is by the vulcanization of rubber is bonding steel spherical pieces and mounting seat to be connected, and simultaneously the center shaft in the steel spherical pieces extends in the mounting seat central shaft hole and constitutes elastic ball block.
Elastic ball block is installed in the bolster of bogie truck and the swing seat ball-and-socket between the bogie side frame, and under the empty wagons loading, steel spherical pieces elasticity of compression rubber metal pad improves the vertical natural bow of bogie truck.
A kind of elastic ball block provided by the invention, the steel spherical pieces links together by rubber metal pad and guide ring and mounting seat, and elastic ball block can realize that the little longitudinal rigidity of vertical stiffness is big.Be installed in the interior elastic ball block of side frame bottom chord knock hole by being installed in the swing seat ball-and-socket on the truck bolster, realize the vertical relative translation of bolster and bogie side frame energy, radially can relatively rotate.Improved the vertical quiet degree of disturbing of bogie truck, the vertical, horizontal rigidity between guaranteeing bolster simultaneously and bogie side frame connecting; And have from heavy and light, characteristics such as convenient manufacturing, maintenance are suitable for and apply, and satisfy railway truck heavy duty and fast-developing requirement.
Description of drawings
Fig. 1 is the structural representation of this elastic ball block.
Among the figure: 1-steel spherical pieces, 2-rubber metal pad, 3-guide ring, 4-mounting seat
Fig. 2 is elastic ball block and bogie truck associated components structural representation.
Among the figure: 5-bogie side frame, 6-bolster, 7-elastic ball block
The specific embodiment
Referring to above-mentioned accompanying drawing, elastic ball block for railway freight-car bogie, elastic ball block comprise steel spherical pieces 1, rubber metal pad 2, guide ring 3 and mounting seat 4; Steel spherical pieces 1 is the conical internal cavity semiglobe, and promptly conical internal cavity is provided with the center shaft that connects usefulness; Mounting seat 4 is the taper mounting seat of band central shaft hole, on axis hole is interior circular groove is arranged, and its guide ring 3 is arranged in the circular groove; Rubber metal pad 2 is a pyramidal structure, and rubber metal pad is by the vulcanization of rubber is bonding steel spherical pieces (1) and mounting seat (4) to be connected, and the center shaft in the steel spherical pieces 1 extends in mounting seat 4 central shaft holes and constitutes elastic ball block.
This elastic ball block is installed in the bolster of bogie truck and the swing seat ball-and-socket between the bogie side frame, and each bogie truck is installed four elastic ball blocks.Under the empty wagons loading, steel spherical pieces compressing rubber heap improves the vertical natural bow of bogie truck.Vertical, horizontal rigidity between simultaneously guaranteeing bolster and bogie side frame connects.