Digital display device for torque measurement of rotary buckle power tongs

Abstract

The invention discloses a turn-lock torque measuring and digitally displaying device for large power tongs. The device comprises a lower casing and an upper casing, the lower casing is provided with a turn-lock binding clip and the upper casing, the upper casing is provided with a hydraulic motor, a ramp groove of the lower casing is internally provided with a cylindrical wedge-surface ramp, the turn-lock of binding clip includes two pairs of turn-lock parts, each pair of turn-lock part comprises a jaw plate, a dovetail groove of the jaw plate is provided with a toothed plate, and a pin and a roller are mounted in a hole of the jaw plate; and a valve plate of the hydraulic motor is provided with a torque digitally displaying instrument, a door frame is mounted at the two arm ends of an opening of the lower casing, one end of a couple sensor is fit with one arm end of the opening of the lower casing, the other end of the couple sensor is fixedly connected with one end of the door frame, and the other end of the door frame is movably connected with the other arm end of the opening of the lower casing via a pin. The mounting and dismounting turn-lock torque is directly measured via the turn-lock binding clip of the large power tongs, the method is reliable, the structure is reasonable, and the measured turn-lock torque is real and believable.

Description

technical field [0001] The invention relates to a digital display device for torque measurement of a turnbuckle power tong. Background technique [0002] Petroleum drilling and production power tongs use jaw plate rollers to "climb" to drive tooth plates to "bite" drill pipes, casings, oil pipes and other round pipe string drilling tools to perform make-up and breakout operations. The workload of the job is directly affected, so measuring and controlling the torque of the power tong is very important. The existing methods for measuring the torque of various power tongs are unreasonable, and the values ​​are not very real and reliable. For example, Chinese patents ZL90102517 and ZL97116001.5 all use the oil pressure gauge value of the hydraulic motor of the power source of the power tong to convert the value of the unloading. The torque value of the buckle, ZL20061098182.6 uses the torque of the tong head of the power tong to pass through the multi-stage gear transmission. T...

AI Technical Summary

Problems solved by technology

The existing methods for measuring the torque of various power tongs are unreasonable, and the values ​​are not very real and reliable. For example, Chinese patents ZL90102517 and ZL97116001.5 all use the oil pressure gauge value of the hydraulic motor of the power source of the power tong to convert the value of the unloading. The torque value of the buckle, ZL20061098182.6 uses the torque of the tong head of the power tong to pass through the multi-stage gear transmission. The reaction torque generated by the planetary gear box is converted into the torque of the tong by the sensor, which is different from the actual torque of the tong head. There are many errors

Images