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

Claim 0:
1. A puller, comprising a first claw and a second claw arranged opposite to each other, wherein,
the first claw comprises a first pulling part, a first limiting part and a first connecting part connecting the first pulling part and the first limiting part; the first limiting part comprises a first body part, a first notch part and a second notch part; the first notch part is located at one side of the first body part close to the second claw in a first direction, and the second notch part is located at one side of the first notch part away from the first body part in the first direction; a size of the second notch part in a second direction is larger than that of the first notch part in the second direction, and the second direction intersects with the first direction,
the second claw comprises a second pulling part, a second limiting part and a second connecting part connecting the second pulling part and the second limiting part; the second limiting part comprises a second body part, a third notch part and a fourth notch part; the third notch part is located at one side of the second body part close to the first claw in the first direction, and the fourth notch part is located at one side of the third notch part away from the second body part in the first direction; a size of the fourth notch part in the second direction is larger than that of the third notch part in the second direction,
a size of the first limiting part in the first direction and a size of the first pulling part in the first direction are both larger than that of the first connecting part in the first direction; and a size of the second limiting part in the first direction and a size of the second pulling part in the first direction are both larger than that of the second connecting part in the first direction, and
a size of the second pulling part in the second direction is smaller than or equal to that of the second notch part in the second direction,
wherein the first limiting part comprises a first surface connected with the first connecting part and a second surface arranged opposite to the first surface,
an orthogonal projection of the first body part on a first reference plane where the second surface is located, an orthogonal projection of the first notch part on the first reference plane and an orthogonal projection of the second notch part on the first reference plane are combined to form a first semicircle,
the orthogonal projection of the first body part on the first reference plane overlaps with an arc side of the first semicircle, and
the orthogonal projection of the second notch part on the first reference plane overlaps with a straight line of the first semicircle, and
wherein the second limiting part comprises a third surface connected with the second connecting part and a fourth surface arranged opposite to the third surface,
an orthographic projection of the second body part on a second reference plane where the third surface is located, an orthographic projection of the third notch part on the second reference plane and an orthographic projection of the fourth notch part on the second reference plane are combined to form a second semicircle,
the orthogonal projection of the second body part on the second reference plane overlaps with an arc side of the second semicircle, and
the orthogonal projection of the fourth notch part on the second reference plane overlaps with a straight line of the second semicircle.