Coupler push-block, coupler tongue, coupler, and railroad car

摘要

English Translation of PCT/CN2013/075579 A coupler push-block, a coupler tongue, a coupler, and a railroad car. The coupler push-block (7) comprises: a push-block pin shaft (73) arranged vertically and for use in 5 hinging with a hook body (1), and, respectively fixedly arranged on the push-block pin shaft (73), a kick leg (71) used for driving the tongue (2) into horizontal rotation, and a lock base (72) used for mating with a locking block, where the lower surface of the kick leg (71) and the lower surface of the lock base (72) are spaced apart at a first distance. The coupler tongue (2) comprises: a head part (202), a tail part (201), and a connecting part (203) connected 0 between the head part (202) and the tail part (201). The connecting part (203) is provided on a side thereof with a groove (205) extending along the longitudinal direction. The bottom surface of the groove (205) is a pushing surface (211) for mating with the kick leg (71) of the coupler push-block. Inside the coupler hook body (1), which uses the coupler push-block (7) and the tongue (2), a horizontal rotation area of the kick leg (71) is provided above the top 5 surface of a lower towing platform (104), therefore, the extended length of the lower towing platform (104) of the hook body can be increased to enhance the strength of the hook body (1), and, while the internal layout of the hook body (1) is optimized, the probability of the lower towing platform (104) cracking or even fracturing is reduced, thus allowing for improved operation safety. -21 -