Bolt sleeve connector, blade and manufacturing method thereof and wind turbine generator system

A blade root structure, comprising:

• a plurality of bolt sleeve connectors configured to connect to a plurality of bolt sleeves respectively, the plurality of bolt sleeve connectors comprising a first bolt sleeve connector adjacent to a second bolt sleeve connector, the first and second bolt sleeve connectors each comprising:
• a plurality of extension portions arranged side by side and spaced apart, each of the plurality of extension portions having a first end and a second end, the plurality of extension portions include a first extension portion and a second extension portion, the first extension portion being located at a first side of the bolt sleeve connector and the second extension portion being located at a second side of the bolt sleeve connector, and a first partial coupling structure formed on the second end of the first extension portion of the first bolt sleeve connector and a second partial coupling structure formed on the second end of the second extension portion of the second bolt sleeve connector are configured to be coupled with each other to form a first whole coupling structure configured to engage with a bolt sleeve of the plurality of bolt sleeves.