SU530819A1 - Device for stopping a rail vehicle - Google Patents

Description

one

FIELD OF THE INVENTION The invention relates to railway transport and relates to devices for stopping rolling stock.

A device for stopping a rail vehicle is known, comprising a frame mounted between the track rails, with an articulated-hinge mechanism mounted thereon, carrying brake pads associated with the drive and interacting with an elastic link mounted between the track rails.

The purpose of the invention is to increase the braking efficiency, reliability and safety of operation.

This is achieved by the fact that the hinged-lever mechanism consists of two pairs of levers fixed on the associated with the drive axles pivotally connected by rods, and is equipped with a hydraulic cylinder and four-fan bellows that are hingedly connected along the short diagonal with the frame and the elastic link, and along the long diagonally - with brake pads, with one of the axles pivotally connected to the hydraulic cylinder rod, the shank of which is pivotally connected to the slide,

movably mounted on the frame. Radial bores are located near the piston in the hollow rod of the hydraulic cylinder, a pressure limiting valve is located in its cavity, and check valves are installed in the piston.

FIG. 1 shows the proposed device, top view; in fig. 2 is a section A-A in FIG. one; in fig. 3 - hydraulic cylinder, cut.

The device comprises a frame 1, which is supported by side bearings on guides 2 installed inside the track 3. On the frame 1 on both rails the pivoting levers 4 with the rollers 5 are pivotally fixed. The levers are pairwise interconnected by axes 6 and m. 7. At the same time The axle 6 is connected to the rod 8 of the hydraulic cylinder 9, which is articulated with a shank 10 with a slider 10 mounted in guides 11 and driven by a screw 12 interacting with a nut 13 fixed in guides 11. A screw 12 with a splined shank is connected hollow head tsevym shaft 14 driven by the actuator (not shown). The frame along the small diagonal of the chaffer 15, through the balance beam 16, interacts with the set of springs 17 of the corner link abutting the fixed stop 18, and along the large diagonal by means of brake pads 19 with fixed guides 20. At this, the force of the springs 17 is adjusted by the nuts 21 of the tightening bolts 22. Restrictions on the movement of the frame 1 in its initial position are the stops 23, and in the other (extreme) position the stops 24. A special feature of the hydraulic cylinder 9 is that its hollow rod 8 contains a pressure limiting valve 25 and nye openings 26 through which the subpiston chamber 5 is connected with the cavity in the cavity above the piston rod and G. This rod 8, D piston 27 which check valves 28 are mounted, by a washer 29 cooperates with the spring LP.

The device works as follows

The rotary levers 4 by means of the screw 12, the slider 10 and the hydraulic cylinder 9 are electrically set to a raised (operational) position. When the wheelset of a moving carriage is pressed on the levers 4 of the frame 1 by means of four celestial armature 15, overcoming the force of the spring set 17 and the force of the pad 19 against the guides 20 can move along the track for some distance, having increased resistance to the car. At the same time, the shank of the screw 12 moves along the splines of the shaft 14, and the force pushing the levers 4 down cannot yet overcome the resistance forces of the movement of the rod 8 of the cylinder 9. However, as soon as the resistance reaches the critical limit and the wheelset of the car begins to squeeze the beast, Rolling on the rollers 5 of the levers 4, the force pushing the levers 4 down (due to an increase in the angle H) increases sharply. Due to this force, the valve 25 opens and the rod 8 is sunk into the inside of the cylinder 9, squeezing the working fluid out of the cavity. B in cavity C and D, thereby turning the lever 4 down and returning the frame 1 to its original position. In this case, the stroke in the rearmost position is limited by stops 23. When the stop interacts with the loaded car

embedding of the levers 4 occurs after the full stroke of the frame 1, due to restrictive stops 24. After releasing the lever 4 wheelset 4, spring 30 pushes the piston 27 upward, displacing the working fluid through the check valves 28 in the opposite direction, and again lifts the levers 4 to the working position. By using two pairs of levers with a certain distance between them, each pair of wheels can interact with the stop twice. If you need to clean the composition in one direction or another, it is enough to move the slider 10 to the opposite extreme position with the help of an electric drive. The switching off of the electric motor in the extreme positions is carried out by means of limit switches (not shown).

Claims (1)

Invention Formula A device for stopping a rail vehicle comprising a frame mounted between the track rails with a hinged lever mounted on it, carrying brake pads associated with the drive and interacting with an elastic link mounted between the track rails, characterized in that, in order to increase brake efficiency , the toggle mechanism consists of two pairs of levers attached to the drive-connected axles, pivotally connected by rods, and is equipped with a hydraulic cylinder and a four-diaphragm shaft Nirni associated with the short diagonal of the frame and the elastic element and on the long diagonal - with brake pads, with one of the axes scharnirno connected to the rod of the hydraulic cylinder, the shank of which is connected to scharnirno slider movably mounted on the frame. 2, the device according to claim 1, characterized in that, in order to increase the reliability and safety of operation, the hydraulic cylinder rods are made hollow with radial holes near the piston, a pressure limiting valve is placed in its cavity, and check valves are installed in the piston.  h N 24 , -. . "G 9 -  -:, --ift // Y7 // V /// y 77/5 25 / f 25 27 2 J / / / 2S 5 Fig.Z / O //// 2 / J / 4