Oil pumping unit dead brake safety hook capable of being unlocked automatically

Abstract

The invention discloses an oil pumping unit dead brake safety hook capable of being unlocked automatically, and the problem that an existing pumping unit dead brake is difficult to pick and needs to be removed by using large mechanical equipment of a crane is solved. The oil pumping unit dead brake safety hook comprises a dead brake wheel, a plurality of dovetail grooves are formed in the outer circumference of the dead brake wheel, a safety hook body is arranged on the outer side of the dead brake wheel, a trapezoid is arranged on the side, close to the dead brake wheel, of the safety hook body, and the trapezoid falls into the dovetail groove to form a structure of locking the dead brake wheel. The oil pumping unit dead brake safety hook capable of being unlocked automatically further comprises a fixing screw rod fixed with a reduction gearbox body, and the side, close to the fixing screw rod, of the safety hook body is of a structure which is rotatably, vertically and horizontally connected with the fixing screw rod in a sliding manner. Under the condition that the shapes of the dovetail grooves of the dead brake wheel of an oil pumping unit and a trapezoid body of an original dead brake safety hook are not changed, the dead brake braking function can be normally used, a limiting screw only plays a role in limiting the moving range of the fixing screw rod, and dead brake force generated by extrusion of the fixing screw rod is avoided.

Description

technical field [0001] The invention relates to the technical field of oil pumping unit dead brake protection equipment, in particular to a self-unlocking dead brake safety hook of an oil pumping unit. Background technique [0002] When the beam pumping unit is overhauled, the petroleum industry stipulates that when the brake is stopped, the dead brake safety hook device of the pumping unit must be in a locked state or a state to be locked before construction operations can be carried out. The safety hook in the state to be locked falls into the dovetail groove of the dead brake wheel fixed on the input shaft of the reduction box to form a rigid brake and is in a safety protection state. According to safety regulations, in order to remove the dead brake state, in order to avoid the unsafe factor of using the pipe clamp to clamp the pulley and the belt, the crank of the pumping unit must be hoisted by a crane so that the output shaft drives the dead brake wheel to rotate, so ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a self-unlocking safety hook for the dead brake of the pumping unit, which effectively solves the difficulty in picking up the dead brake of the pumping unit at present, and requires the use of large mechanical equipment such as a crane to carry out the installation. lifted problem

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