Power box for reciprocating drilling mud pump

Abstract

The invention relates to the field of drilling equipment and in particular relates to a power box for a reciprocating drilling mud pump. The power box comprises a box body, wherein a crankshaft is rotationally arranged in the box body; a connecting rod is arranged on the crankshaft in a matched manner; a driving shaft and a gear-shifting shaft parallel to the crankshaft are arranged in the box body; a gear-shifting driving gear set capable of axially sliding along the driving shaft is arranged at a part, which is positioned in the box body, of the driving shaft in a sleeving manner; a gear-shifting driven gear set corresponding to the gear-shifting driving gear set is arranged on the crankshaft; and a shifting fork used for shifting the gear-shifting driving gear set and the gear-shiftingdriven gear set to be in corresponding meshed connection is arranged at a part, which is positioned in the box body, on the gear-shifting shaft. The power box disclosed by the invention is compact instructure and stable in performance and has a speed control gear-shifting function, and the quantity of gears of a reducer matched with the power box can be reduced under the condition that the size is basically invariable, so that the mud pump reducer assembly has small spacing size and multiple gear options and has a wide application range under the well.

Description

technical field [0001] The invention relates to the field of drilling equipment, in particular to a power box for a reciprocating drilling mud pump. Background technique [0002] Drilling pump is one of the components of drilling equipment. Drilling pumps are mainly hole washing pumps, which are defined as mud pumps in the ministries issued by the Ministry of Geology and Mineral Resources of my country, and the pump type is defined as reciprocating pumps. In drilling construction, the mud pump is responsible for delivering cleaning fluid to the hole and making it circulate in the hole. In some special processes, mud pumps are also used to pour cement slurry and other substances into the holes. [0003] During the use of mud pumps, it is often necessary to adjust the displacement according to the working conditions. Shifting to adjust the displacement is generally done by changing the input speed of the mud pump, adjusting the piston stroke of the mud pump, or changing the ...

AI Technical Summary

Problems solved by technology

In order to achieve multi-stage shifting and shifting stability, the reducer matched with the mud pump is bulky, heavy and inconvenient to move

As the drilling depth increases and the casing layers increase, the mud pump itself increases the power of the pump sharply, and the weight and dimensions of the pump also increase accordingly, making the mud pump a giant pump among the reciprocating pumps. The mud pump reducer combination with multi-stage shifting function is difficult to locate in a small underground space, and it is difficult to take advantage of its multi-stage shifting

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