Automatic feeding and discharging machine of petroleum pipe threading lathe

Abstract

The invention provides an automatic feeding and discharging machine for a petroleum pipe threading lathe. The automatic feeding and discharging machine comprises a feeding table area, a discharging table area, a roller conveying mechanism located between the feeding table area and the discharging table area, a feeding guide plate connected with the feeding table area, the discharging table area and the roller conveying mechanism, a discharging guide plate connected with the discharging table area and the roller conveying mechanism and a feeding and discharging conveying mechanism, wherein the end, close to the roller conveying mechanism, of the feeding table area is low and provided with an adjusting check block, the end, close to the roller conveying mechanism, of the discharging table area is high and provided with an anti-impact check block, and the roller conveying mechanism is used for conveying pipes to a machining area of the pipe threading lathe; the roller conveying mechanism comprises a rack, a conveying roller mechanism and a conveying roller lifting adjusting mechanism; and the feeding and discharging conveying mechanism comprises a feeding and discharging plate, an oil cylinder, a guide sleeve and a guide centralizing rod. The automatic feeding and discharging machine has the advantages that batch automatic feeding and discharging operation of pipes with male threads and female threads of various drill rods, drill collars, casing pipes and oil pipes can be achieved, and production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of oil pipe thread processing, and more specifically relates to an automatic loading and unloading machine for an oil pipe thread lathe. Background technique [0002] Drill pipes, drill collars, casings, and oil pipes in the field of oil and energy are important special pipes for oil field development and production. They are generally lowered into wells below the ground. Each pipe is threaded one by one by the male and female threads at both ends. In particular, drill pipes and drill collars are necessary tools for drilling. During the drilling process, they are often pulled out and tripped one by one or three by one. The connected threads need to be re-drilled in two or three wells. New machining or repair of threads on pipe thread lathes. [0003] The pipe thread lathe is a special machine for processing various oil pipe threads, and the pipe loading and unloading machine is a special machine specially d...

AI Technical Summary

Problems solved by technology

[0013] 4.2. Pushing the trolley to manually feed the machine tool, it is difficult to penetrate the spindle hole at one time, resulting in frequent impacts on the rear chuck. At that time, there were 5 pipe beds in the pipe thread processing workshop in the oil field. Every year, each machine tool was shut down for maintenance for one week to replace the chuck. It costs 20,000 to 30,000 yuan. Due to the frequent impact of the spindle bearing, the precision drops rapidly. It is difficult to guarantee the quality of thread processing and the quantity of drill pipes and collars supplied.

[0015] 4.4. It has been proved that the original trolley loading and unloading processing thread crane is too busy, the thread processing efficiency is low, the labor intensity is high, the safety factor is low, the support center line of the pipe and the machine tool center line are difficult to coincide, and the hole is not allowed to collide and affect The service life of the machine tool, the surface of the processed thread has ripples, the seal end face has a large runout, the surface roughness does not meet the requirements, and the pipe is not well sealed when the thread is used to connect. Due to the development of the oil field and the gradual growth of the oil field, the supply of drilling tools for the well team is often in an emergency. Drill collar thread reaches the repair state and cannot be repaired. Tripping accidents often occur or the sealing surface is not sealed when it is used continuously. Type failure, the liquid flow does not flow out through the drill bit and is short-circuited, the liquid flow and pressure at the drill bit decrease or the liquid flow stops circulation, and the broken rock cutting is not smooth, causing the rock cutting to sink and stick the drill or bury the drill string. If it happens, the whole well will even be scrapped, resulting in huge losses. The old-fashioned feeding and unloading method of the pipe thread machine tool is inefficient. The well crew is often in a hurry waiting for the drilling tool to spud out. The thread processing lathes for drilling tools in the oil field are going to be increased from 5 to 10. If the loading and unloading method is not changed, the thread processing efficiency will not be improved if the loading and unloading method is not changed. Due to backwardness, it is urgent to study a new loading and unloading machine that reduces the utilization rate of cranes, has high thread processing efficiency, good thread quality, improves safety factor and reduces labor intensity of personnel.

However, since the feeding and feeding process of this structure is controlled by the flap inlet and outlet device, the flap inlet and outlet device will be hit frequently, the accuracy will drop rapidly, and the thread processing quality is difficult to guarantee. In addition, the righting of the structure The device has the function of adjusting the position of the pipe. However, since the length of the processed pipe is about 9.5 meters, each pipe has the problem of non-straightness and deflection. It is still impossible to solve the problem of the center of the pipe and the center of the machine tool spindle only by the bottom support without clamping. Deviation, vibration when the machine tool rotates, the impact on the accuracy of the machine tool and the quality of the processed pipe thread, and the problem of often hitting the rear chuck

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