A method for hoisting the crankshaft of a mud pump

Abstract

The invention relates to a hoisting method of a slurry pump crankshaft. The slurry pump crankshaft comprises a crankshaft, and crankshaft connecting rods arranged on the crankshaft; the slurry pump crankshaft is arranged in a slurry pump housing; and the crankshaft connecting rods are arranged in a cross-shaped head chamber of the slurry pump housing. The hoisting method comprises following steps: 1, a special hoisting device used for slurry pump crankshaft assembling is designed and produced; 2, a crankshaft hoisting rigging is used for connecting a hoisting pipe hoisting apparatus to realize whole hoisting of the crankshaft; 3, a crankshaft connecting rod hoisting rigging is used for connecting the crankshaft connecting rods with the hoisting pipe so as to keep level conditions of the crankshaft connecting rods; and 4, the crankshaft is hoisted into the slurry pump housing, the three crankshaft connecting rods are completely inserted into the cross-shaped head chamber, hoisting is completed, and the hoisting riggings are disassembled. The hoisting device comprises the hoisting pipe, a main hoisting rigging, the crankshaft hoisting rigging, and the crankshaft connecting rod hoisting rigging. The hoisting method and the hoisting device are capable of realizing stable hoisting and assembling of the slurry pump crankshaft, are safe, and are capable of saving labour and time.

Description

technical field [0001] The invention relates to the field of petroleum drilling, in particular to a hoisting method and a special hoisting tool for hoisting the crankshaft of a mud pump on drilling equipment. Background technique [0002] In the current mud pump manufacturing process, fast and efficient assembly is one of the key factors to realize the mass production of mud pumps, and it is also one of the main factors to improve the efficiency of production and assembly work. During the assembly process of the mud pump, the process of assembling the crankshaft to the frame of the mud pump is particularly important. The center of gravity of the crankshaft assembly is not easy to grasp, there are many hoisting parts, some hoisting parts can rotate around the crankshaft, it is not easy to fix, and the space of the assembly part is small and other assembly difficulties, so accurate hoisting assembly is extremely necessary. [0003] Prior art mud pump crankshaft assembly and h...

AI Technical Summary

Problems solved by technology

The characteristic of step-by-step hoisting is that it takes a long time for hoisting. At least two lifting equipment are needed, and seven assembly workers work together to complete the lifting process. The overall assembly efficiency is low, time-consuming and laborious

[0005] 2. Instability during the lifting process: During the overall lifting process, due to the appearance and structural characteristics of the crankshaft, the crankshaft connecting rod is easy to interfere with the lifting rigging, and the crankshaft connecting rod is close to the dead rigging, and in the subsequent lifting process of the connecting rod, the crankshaft The connecting rod should rotate around the crankshaft, which will cause the overall center of gravity of the crankshaft to move. Under the state of tension, the main lifting sling will slip along the surface of the crankshaft connecting rod with the rotation of the crankshaft connecting rod. The slipping of the rigging will cause the crankshaft to Trembling in the air, the lifting is unstable, and because the overall weight of the crankshaft is heavy, the crankshaft connecting rod will "cut the rope", posing a safety hazard

[0006] 3. Difficulty in assembly: Due to the large amount of lifting equipment required in the process of lifting and assembling, the lifting action is complicated, and a high degree of coordination and cooperation between each assembler is required.

Especially when the crankshaft connecting rod is installed into the cross head compartment of the casing, the assembly angle and height must be adjusted many times, and the height of the main lifting sling also changes synchronously with the change of the height of the crankshaft connecting rod. In addition, the internal space of the mud pump casing Narrow and difficult to assemble

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