A new anti-hand brake lever for railway wagons

Abstract

The invention discloses a novel hand-slip preventive brake pull rod for a railway truck. The novel hand-slip preventive brake pull rod comprises a hand-slip preventive guide frame, a pull rod head and a pull rod. Guide grooves are formed in the hand-slip preventive frame along the vertical direction of the hand-slip preventive frame, a carrier roll is arranged on the lower portion of the hand-slip preventive frame, a hand-slip preventive groove is formed in the pull rod head along the horizontal direction of the pull rod head, the pull rod head is arranged on the carrier roll and is connected with the hand-slip preventive guide frame by a hand-slip preventive pin which penetrates the guide grooves and the hand-slip preventive groove, and an end of the pull rod is fixedly connected with a tail groove of the pull rod head. The novel hand-slip preventive brake pull rod has the advantages that problems of clamping stagnation due to the fact that an existing hand brake pull rod for a railway truck slips out of an existing carrier roll at a sudden sectional change position of round steel and breakage of the existing hand brake pull rod due to fatigue and stress concentration at a sectional sudden change position of the tail of the existing hand brake pull rod can be effectively solved by the aid of the novel hand-slip preventive brake pull rod; the pull rod head still can be fixed onto the hand-slip preventive guide frame by the aid of the hand-slip preventive pin even if the tail of the pull rod is accidentally broken, a rod body of the integral pull rod head can be supported by the carrier roll without falling off, and accordingly the driving safety can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of railway freight car brakes, in particular to a novel hand-off prevention brake pull rod for railway freight cars driven by a movable pulley. Background technique [0002] At present, most of the hand brake pull rods of the hand brake devices of existing railway freight cars in our country adopt two 600mm long reinforcing rods and the hand brake pull rods are assembled and welded side by side, and are guided by the hand brake pull rod hanger. When the vehicle implements the hand brake after the wind brake is applied, the brake cylinder piston reaches the maximum stroke and all the tile wheels wear to the limit. When the vehicle hand brake lever chain, hand brake lever, hanger, etc. When the parts are out of tolerance, wrongly installed, or misplaced, the tail of the guide rod of the hand brake lever will come out of the guide frame and be stuck and cannot be relieved, resulting in the breakage of the hand ...

AI Technical Summary

Problems solved by technology

When the vehicle implements the hand brake after the wind brake is applied, the brake cylinder piston reaches the maximum stroke and all the tile wheels wear to the limit. When the vehicle hand brake lever chain, hand brake lever, hanger, etc. When the parts are out of tolerance, wrongly installed, or misplaced, the tail of the guide rod of the hand brake lever will come out of the guide frame and be stuck and cannot be relieved, resulting in the breakage of the hand brake parts or the failure of the brake brake; and the hand brake of the existing truck The dynamic tie rod is often broken at the tail of the 600mm long reinforcing rod due to stress concentration and fatigue at the sudden change in the cross section of the tail, which affects driving safety

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