Conveying cable and preparation method thereof

The invention relates to a conveying cable which comprises a first nickel-titanium cable section and a second nickel-titanium cable section connected with the first nickel-titanium cable section, the length ratio of the first nickel-titanium cable section to the second nickel-titanium cable section is 1: 12.75-1: 1, and the equivalent flexural rigidity of the first nickel-titanium cable section is smaller than 1/2 of the equivalent flexural rigidity of the second nickel-titanium cable section. One end of the conveying cable is soft, the flexibility is good, and the overall flexural rigidity of the conveying cable meets the pushing requirement. 本发明涉及一种输送缆，包括第一段镍钛缆及与所述第一段镍钛缆连接的第二段镍钛缆，所述第一段镍钛缆与所述第二段镍钛缆的长度之比为1:12.75～1:1，且所述第一镍钛缆段的等效抗弯刚度小于所述第二段镍钛缆的等效抗弯刚度的1/2。该输送缆的一端较为柔软，柔顺性较好，且输送缆的整体抗弯刚度满足推送要求。