SU20124A1 - Safety net for tramcars - Google Patents

Description

The safety net for tram cars consists of steel strips wound onto a shaft and connected to movable side frames. In anticipation of the driver’s arrival, the driver releases a spring causing the grid to wind up and advance along with the side rollers in order to hit the front shaft of the grid on the legs of the oncoming person and catch it in the grid.

FIG. 1 of the drawing shows a view of the safety grid on the side; FIG. 2 shows a front view of the car and partly a detail of the tension shaft device.

A shaft 6 surrounded by a coil spring 7, over which a hollow shaft 8 connected to its end is attached, is placed in a cylindrical casing 1, which is wired to the front part of the carriage wagon. With the shaft 8, one end of a safety net consisting of mutually intersecting steel strips 9. The other end of the mesh 9 is connected to the shaft 10, provided with three rollers 11, 12 and 13. The mesh end, which is connected to the shaft 10, is connected to the side ramps 19 on both sides through the notches 14 on the mesh and corresponding fingers on the frame 19. The frames 19 on each side of the net consist of double corners, positioned and sliding along the sides of the guide rollers 22 fixed on the car body, and on the lower ends of the frames 19 there are rollers 21, between which the end of the net 9 goes. It has a longitudinal opening through which the grid 9 can pass, whereby the visor 25 fixed to the casing serves to guide its movement. The stops 23 on the frames 19 and the fingers 24 on the shaft 6 serve to stop the winding of the grid. The winding of the grid 9 on the shaft 8, followed by tension spring 7, occurs under the influence of the mechanism 26, consisting of the handle 3, gear 28 and spring 29, what is the gear coming into engagement with gear 30, the shaft 6 is tightened on the gear 6. The gear 30 is kept from reverse rotation by means of a spindle 32 connected to a spring rod enclosed

c, tgy6Kj (31 and controlled lever transmission from the pedal 38 or from the contact connected to the handle of the controller.

To charge the device, the grid 9 is wound on the shaft by 8 rotation of the handle 27 and at the same time pods - side racks 19 on the rim 2 2 (nt 1 B1, spring 7. The pedal 38 frees the gear when approaching the counter 581Р— ШШ ° Ш) 9-Р6-ШШ the dogs 32, and the net, under the action of the spring 7, wind off the shaft 8, dragging with it a frame 19 designed to maintain its tension. The edge of the grid, lowered to the level of rails by the shaft 10, strikes the legs of the oncoming person and tilts him onto the grid.

{five

The subject of the patent.

The safety net for tram cars, characterized by the fact that the net of steel strips, is reeled up onto the roller 8 attached to the car body while simultaneously charging the spring 7 by the same roller 8, winding up with such force The said spring when the wagon holder is turned off and the device at the same time carried away with a sabotage, with the aim of proper tensioning, the god frames 19, associated with the end of the net cloth and sliding along the guide rollers 22.

FIG. 2