SU1426917A1 - Safety device - Google Patents

Abstract

BACKGROUND OF THE INVENTION The invention relates to safety devices for monorail shaft hoists and tunnels. The purpose of the invention is to improve the performance by facilitating the disinhibition process. The device comprises a housing 1 within which a shaft is mounted, provided at one end with a roller supported on the monorail shelf by means of a gear, and at the other end by a centrifugal speed limiter. F (-f ($; s: cc; sssNSS sss 15 which engages with the toothed surface of the drum 13. The hydraulic damper has guide caps 18 and 19 fixed in the bores of housing I, and the stroke limiters 20 and 21 of the sleeve 16. A spring is preloaded in the shock absorber sleeve 16. the cavity of the shock absorber and the cover 18 are filled with working fluid and communicate with each other through the valve 23 with the throttle hole. When the lift speed is exceeded, the brake drum 13 moves the sleeve 16, compressing the spring 22. This opens the valve 23 and the working fluid from the cavity of the sleeve 16 flows into the cavity of the cover 18. After the loads are extinguished, the spring 22 smoothly unclenched and the reverse flow of fluid occurs. 3 Il. with S (L 4 HS o / / / / / / / / / / / / / / / / / / / / / / HHF Fi. Z

Description

The invention relates to precautionary devices of rail mine hoists and tunneling regiments.

The purpose of the invention is to improve the performance characteristics of the safety device by facilitating the release process. i FIG. 1 shows a safety device, a general view of the catcher; in FIG. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. I.

The safety device includes a housing 1, equipped with a support roller 2 supported on the monorail shelf 3, a drive gear 4 communicating with the monorail flanks 5 and seated on the shaft splines 6. At the other end of the shaft 6 a centrifugal speed limiter 7 fixed with loads 8 and 9, hinged i mounted on axes 10 and 11 and squeezed by a spring 12. On the inner surface of the brake drum 13 of the centrifugal limiter 20 i speed 7, the projections 14 are made, i and the outer surface looks like a gear wheel in engagement with gear rack 15 mounted on the surface of the cylindrical sleeve 16 of the hydraulic shock absorber 17. Sleeve 16 has the possibility of translational movement in the guide caps 18 and 19 fixed in the bores of the housing 1, and has soft stops 20 and 21 of the stroke. Inside shock absorber limiter speed 7. Under emergency conditions, i.e., when the rotational speed is exceeded, the loads 8 and 9 are dispensed, compressing the spring 12, and their hooks are pushed into the protrusions 14, turning the brake drum 13, resulting in a rack 15, in engagement with the surface of the brake drum, moves the sleeve, compressing the brake spring 22 This opens the valve 23 and the working

10, the fluid from the cavity of the sleeve 16 flows into the cavity of the lid 18. After the dynamic loads are extinguished, the spring 22 opens smoothly. The valve 23 is closed and the working fluid flows into the cavity of the sleeve 16 through the throttle hole 24. To bring the centrifugal limiter, 7 speeds to the initial position, the lift (not shown) moves up, and the weights 8 and 9 come out of the engagement with the projections 14.

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Claims (1)

Invention Formula A safety device comprising a housing in which a centrifugal speed limiter with a brake drum and a drive gear meshed with a rail is mounted on the Shaft and a brake spring, characterized in that, in order to improve performance by facilitating the release process, it is equipped with The device 17 is installed with a hydraulic shock-absorber .r ... r -.... nn 1-1 -1Cht1, which is preloaded in the housing. OO Dtii gtchh h t iitjrt p / ChPGLG and JW EO-T GCHGLL Luo If P about 1 / 1G t and l g illj ntiti brake spring 22. The internal cavities of the shock absorber 17 and the covers 18 are filled with working fluid and communicate with each other through the valve 23 with the throttle bore 24. a mash including a cylindrical sleeve,. having a toothed rack, and caps with elastic bushing stroke restraints, with the outer surface of the brake drum being The safety device works, the gear that meshes with the tooth is as follows. A rotating rack of a cylindrical bushing, and an Adjustable gear, running around the girls 5, transmits the torque to the center of the chickpeas a brake spring is installed inside the cylindrical sleeve. 20 25 Robust limiter 7 speeds. Under emergency conditions, i.e., when the rotational speed is exceeded, the loads 8 and 9 are dispensed, compressing the spring 12, and their hooks are pushed into the protrusions 14, turning the brake drum 13, resulting in a rack 15, in engagement with the surface of the brake drum, moves the sleeve, compressing the brake spring 22. This opens the valve 23 and the working 10, the fluid from the cavity of the sleeve 16 flows into the cavity of the lid 18. After the dynamic loads are extinguished, the spring 22 opens smoothly. The valve 23 is closed and the working fluid flows into the cavity of the sleeve 16 through the throttle hole 24. To bring the centrifugal limiter, 7 speeds to the initial position, the lift (not shown) moves up, and the weights 8 and 9 come out of the engagement with the projections 14. 15 Invention Formula A safety device comprising a housing in which a centrifugal speed limiter with a brake drum and a drive gear meshed with a rail is mounted on the Shaft and a brake spring, characterized in that, in order to improve performance by facilitating the release process, it is equipped with hydraulic shock absorber installed in the housing EO-T ГЧГЛЛ Ло If П about 1 / 1Г t and l r illj ntiti a mash including a cylindrical sleeve,. having a toothed rack, and caps with elastic bushing stroke restraints, with the outer surface of the brake drum being The chickpea brake spring is installed inside the cylindrical sleeve. - 2 Fi. f 5 - 5 YU eleven