Patent ID: 11964350
Assignee: YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 10:
11. A claw, comprising a pulling part; a limiting part and a connecting part connecting the pulling part and the limiting part, wherein the limiting part comprises a main body part, a first notch part and a second notch part which are sequentially arranged in a first direction; a size of the second notch part in a second direction is larger than a size of the first notch part in the second direction, and the second direction intersects with the first direction,
a size of the limiting part in the first direction and a size of the pulling part in the first direction are both larger than a size of the connecting part in the first direction; and a size of the pulling part in the second direction is smaller than or equal to the size of the second notch part in the second direction,
wherein the limiting part comprises a first surface connected with the connecting part and a second surface arranged opposite to the first surface,
an orthographic projection of the main body part on a reference plane where the second surface is located, an orthographic projection of the first notch part on the reference plane, and an orthographic projection of the second notch part on the reference plane are combined to form a semicircle,
the orthographic projection of the main body part on the reference plane overlaps with an arc side of the semicircle, and the orthographic projection of the second notch part on the reference plane overlaps with a straight line of the semicircle, and
wherein the orthographic projection of the second notch part on the reference plane is a rectangle, and the orthographic projection of the first notch part on the reference plane is a shape formed by a circular arc and a long side of the rectangle.