An oilfield steel pipe transfer pick-up caliper

Abstract

The invention discloses pickup calipers for oil field steel pipe transferring. The pickup calipers are characterized in that a first hinge arm and a second hinge arm are included, the upper portion of the first hinge arm serves as a first hanging arm, the lower portion of the first hinge arm serves as a first arc-shaped gripper, the upper portion of the second hinge arm serves as a second hanging arm, the lower portion of the second hinge arm serves as a second arc-shaped gripper, and the middle of the first hinge arm and the middle of the second hinge arm are hinged together through a hinge shaft to form an X-shaped entirety; the first hanging arm and the second hanging arm are each provided with a cable hole, the arc center inner side of the first arc-shaped gripper is opposite to that of the second arc-shaped gripper, the two axial sides of the peripheral front end of the first arc-shaped gripper are connected with first rolling wheels respectively, the axial middle of the peripheral front end of the second arc-shaped gripper is connected with a second rolling wheel capable of entering the position between the two first rolling wheels, and the axes of the first rolling wheels and the axis of the second rolling wheel are all parallel to the axis of the hinge shaft. The pickup calipers can grip steel pipes with different diameters without needing to pry the steel pipes, and operation is easier.

Description

technical field [0001] The invention relates to a steel pipe grasping and lifting tool such as an oilfield drill pipe, in particular to a pick-up caliper for oilfield steel pipe transfer. Background technique [0002] In oilfield production, drill pipes and oil extraction pipes are essential equipment. Due to their heavy weight, lifting equipment is required when taking them out. However, they are all piled together and the lifting equipment is not easy to grasp. To be solved by technology. Contents of the invention [0003] In order to solve the above problems, the present invention provides an oilfield steel pipe transfer pick-up caliper. [0004] The technical solution adopted in the present invention is: an oilfield steel pipe transfer pick-up caliper, which is characterized in that it includes a first articulated arm and a second articulated arm, the upper part of the first articulated arm is the first boom, and the lower part of the first articulated arm is the firs...

AI Technical Summary

Problems solved by technology

[0002] In oilfield production, drill pipes and oil extraction pipes are essential equipment. Due to their heavy weight, lifting equipment is required when taking them out. However, they are all piled together and the lifting equipment is not easy to grasp. pending technical solution

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