Novel boom cap of cone crusher

The invention discloses a novel boom cap of a cone crusher and belongs to the technical field of crushers. The boom cap is mounted on an upper frame body of a crusher body to cover a spindle of the crusher body; an exhaust hole and an oil filling hole are formed in the boom cap; the boom cap comprises a cover body and a flange body; the flange body comprises a flange plate and a flange neck part located in the center of the flange plate; the inner diameter part of the flange neck part is of a structure with a large end and a small end, and the inner diameter is gradually reduced with approaching the flange plate; a flange part is arranged on the cover body, and the cover body is in matched thread connection with the flange plate through the flange part. The flange part and the flange plateare adopted to form dual-flange connection, the heads of bolts are exposed to the outside, so that the condition of the bolts can be observed from the upper part, observation and routing inspection are facilitated, and dismo