US 12,331,784 B2
Crosshead part and crosshead system for drilling pumps and the drilling pumps
Fangfang Zhang, Sichuan (CN); Weili Huang, Sichuan (CN); Jian Cheng, Sichuan (CN); and Qiong Yang, Sichuan (CN)
Assigned to SICHUAN HONGHUA PETROLEUM EQUIPMENT CO., LTD, Sichuan (CN)
Filed by SICHUAN HONGHUA PETROLEUM EQUIPMENT CO., LTD, Sichuan (CN)
Filed on Mar. 13, 2023, as Appl. No. 18/120,986.
Claims priority of application No. 202220561530.3 (CN), filed on Mar. 15, 2022.
Prior Publication US 2023/0213065 A1, Jul. 6, 2023
Int. Cl. F16C 33/10 (2006.01); F04B 53/14 (2006.01); F04B 53/18 (2006.01)
CPC F16C 33/1045 (2013.01) [F04B 53/14 (2013.01); F04B 53/18 (2013.01); F16C 2360/42 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A crosshead part for drilling pumps, the crosshead part comprising an upper guide plate, a lower guide plate and a crosshead, wherein the crosshead reciprocates in a straight line between the upper guide plate and the lower guide plate; at least one of the upper and lower guide plates has a first oil inlet for introducing external lubricating oil between the at least one of the upper and lower guide plates and an arc surface of the crosshead; mounting surfaces of the upper and lower guide plates are fixed to support ribs on a frame through bolts, and an axis of the bolts is vertical to and passes through a central line of the crosshead.