Friction absorbing device coupler

 

(57) Abstract:

The invention relates to railway vehicles, in particular to a friction absorbing apparatus coupler. The technical result - improving the efficiency and reliability of the absorbing apparatus as in dynamic shock and slow quasi-static effects. The device includes a housing, which houses the compression wedge, friction wedges, the movable and stationary plates and intermediate plate. Intermediate plate rests on the cylinder with a sealing lid, sliding on made in the case of the centering cylindrical surface. Inside the cylinder is a rod resting on the bottom of the housing. Working chamber filled cylinder volume-compressible shock-absorbing composition and hydraulically connected to each other by an annular gap between the cylinder and the rod and the holes in the rod. 1 Il.

The invention relates primarily to rail transport and relates to a friction shock-absorbing devices of the coupler of a railway vehicle.

Widely known friction draft gears [1] hexagonal or lamellar type, with the via the intermediate plate with a spring kit.

The disadvantage of these devices is the low reliability and low energy consumption, due to the instability of the force characteristics of the shock absorber and friction autocalibrate in friction, this contributes to the large angle of inclination of the surfaces of the adjusting wedge (see the drawing), which must be set when using low-power spring kit.

Closest to the technical nature of the claimed invention are gidrofilnye gears domestic (type PGF) and foreign (type H-6O) [1], comprising a housing in which is placed a pressure wedge, friction wedges, the movable and stationary plates, the spring that returns the apparatus to its original state, as well as in the internal space of the spring power steering - hydraulic device of bellows type. The purpose of the booster is to increase the intensity of retaining kit under dynamic loading absorbing mechanism.

The disadvantage hydrofracting absorbing apparatus is its low reliability due to the complexity and labour intensity in manufacturing, due to the fact that the dimensions of the steering Ogre power steering and absorbing device to its original position. In addition, the booster can increase the energy absorbing mechanism only under impact loading with large velocities; by the collisions of heavy cars with relatively low speeds and under quasi-static compression modes absorbing apparatus (for example, when working on the train) it is inefficient.

The aim of the invention is to improve the efficiency and reliability of the absorbing apparatus as in dynamic shock and slow quasi-static effects.

The objective is achieved in a friction absorbing device, comprising a housing in which is placed a pressure wedge, friction wedges, the movable and stationary plates and intermediate plate, resting on the retaining-return device is designed as a shock absorber of the hydraulic type. The absorber consists of a cylinder, a piston, and a sealing cover. New in the invention is that the working environment, which fills the cavity of the shock absorber is a volume-compressible composition of high viscosity [2], giving the absorber elastic properties ("liquid spring"), as well as by throttling through the annular gap and calibrated overstating energy, far greater than the energy of the spring set used in analogue and prototype, it provides increased efficiency and stability of the absorbing apparatus in General, at relatively low values of the angle of inclination of the surfaces of the pressure wedges .

In the absence of the retaining part of the device springs space to accommodate a retaining-the return of the shock absorber can be increased significantly, simplifying its design, allows you to increase the amount of shock-absorbing composition, to reduce the pressure in the working chambers of the cylinder and thereby improve the reliability of the device. Increased volume shock-absorbing composition increases, which improves the dynamic response of retaining-return damper and friction absorbing device as a whole.

The drawing shows a General view of a friction absorbing device.

Friction absorbing device includes a hollow body 1 in which are located the pressure wedge 2, the friction wedges 3, the movable plate 4, the fixed plate 5, the intermediate plate 6. Plate 6 rests on the cylinder 7 of the retaining-return device, which is centered internal cylindricus the seals which are 11. Chamber of the cylinder and filled with a shock-absorbing composition 12.

Friction absorbing device operates as follows.

Under the force transmitted from the coupler pressure wedge 2, it is moved by actuating a friction wedges 3, the intermediate plate 6 and the cylinder 7. This shock-absorbing composition due to the decrease in the total volume of the chambers a and b is compressed and is forced from the chamber And into the chamber through the annular gap between the cylinder 7 and the rod 8 and an orifice in the piston rod 13, creating the effort backwater. Under the force transmitted from the coupler wedge pressure and further movable plates, and retaining the best efforts of the shock absorber is pressurized on the main friction surfaces of a friction absorbing device, that, when their mutual displacement, leads to the absorption of impact energy.

References

1. Kolomiychenko Centuries, Costin N. A., Prokhorenkov C. D. and other Hitch device of railway rolling stock. M.: Transport, 1991. - 232 S.

2. RF patent 2130471, GC 08 L 83/04, 1997.

Friction absorbing device for a coupler of a railway vehicle, containing the exact stove, characterized in that the intermediate plate rests on the cylinder with a sealing lid, sliding on made in the case of the centering cylindrical surface inside the cylinder is a rod resting on the bottom of the housing; a working chamber filled cylinder volume-compressible shock-absorbing composition and hydraulically connected to each other by an annular gap between the cylinder and the rod and the holes in the rod.

 

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