SU431050A1 - TOW TRUCK TRAILING OF A RAIL CREW CART - Google Patents

Description

one

The invention relates to railway transport, in particular to an axlebox spring suspension of a rail carriage cart.

Axle spring suspensions of rail carriages are known, containing springs located between the trolley frame and axle box brackets, guide spytons rigidly connected to the frame and passing through the holes in the axle box brackets, and vibration dampers.

In order to improve the smoothness of the cart by putting the dampers into operation only when the springs are stretched, the dampers are made of hydraulic one-sided action of an annular form and are located on the spintons between the bottom surface of the axle boxes and the spinton nuts.

In a buckle spring suspension, the damper may comprise an annular cylinder supported by a spinton nut and an annular piston with a regenerative chamber and a valve-throttle system, movable in the cylinder and pressed against the bottom surface of the axle box by an elastic element located in the cylinder.

In order to avoid overloading the quencher, it is advisable to connect the piston cavity and the recovery chamber to a safety valve.

Overflow holes can be made in the piston to prevent leakage of working fluid from the quencher.

FIG. 1 shows the proposed axle spring suspension of a rail carriage cart; in fig. 2 - oscillation damper in the section.

Box spring suspension of a rail carriage cart contains 1,

located between the frame 2 of the trolley and the brackets 3 of the axle box, the guide bolts 4, rigidly connected to the frame of the trolley and passing through the holes 5 in the axle brackets.

Oscillation dampers are made of hydraulic unilateral action of annular form and are located between the bottom surface of axle box brackets and nuts of 6 spyton.

The vibration damper contains an annular cylinder 7 supported on a nut, a joint and a spring-loaded 8 ring-shaped piston 9 with a recuperative chamber 10 and a valve-throttle system 11. The piston is pressed against the bottom surface of the axle box with an elastic element 12 located in the cylinder. A safety valve 13 connects the recuperative chamber and the piston chamber A and

designed to avoid overloading. Overflow ports 14 are made in the piston to prevent leakage of the working fluid from the extinguisher.

Axial spring suspension works as follows.

Under the influence of a shock perturbation at the junction of the rails, the spring suspension is compressed, while the damper is stretched by an elastic element 12, which moves the ring-shaped piston upwards. The fluid from the recuperative chamber through the valve-throttle system 11 fills the cavity A.

When the axle spring lighting is stretched, the vibration damper shrinks and the liquid already with resistance flows from cavity A through the throttle of the valve-throttle system to the recuperative chamber.

Thus, the oscillation absorber develops resistance forces only on the course of compression when the spring suspension is stretched, which significantly improves the dynamic properties of the rail carriage.

In the event of an overpressure in the cavity A above the design, the relief valve of the valve-throttle system comes into effect, due to which the resistance to fluid overflow decreases. The vibration damper does not leak fluid, since if it penetrates between the piston rings and the cylinder walls above the piston rings, it flows through the overflow ports of the piston into the recuperative chamber.

Subject invention

Claims (4)

1. A block spring suspension of a rail carriage containing springs located between the frame of the carriage and the axle brackets, the guide spytons rigidly connected to the frame and passing through the holes in the axle box brackets, and vibration dampers, characterized by that, in order to improve the smoothness of the trolley's stroke by putting the damper into operation only when the springs are stretched, the dampers are made of hydraulic one-sided action of an annular shape and are located on pins between the bottom surface of the axle brackets and the spinton nuts. 2.Black spring suspension according to claim 1, in which the damper contains an annular cylinder supported on a spyton nut and an annular piston with a regenerative chamber and a valve-throttle system movable in the cylinder and pressed to the bottom surface of the axle box with an elastic element located in top hat 3. Buksovoe spring suspension on PP. 1 and 2, characterized in that, in order to avoid overloading of the extinguisher, the piston cavity and the regenerative chamber are connected by a safety valve. 4.Buck spring suspension on PP. 1 and 2, characterized in that, in order to avoid leakage of the working fluid from the extinguisher, overflow holes are made in the piston.