Bridge trunnion machining process

Abstract

The invention relates to a bridge trunnion machining process. The bridge trunnion machining process is characterized by comprising the following specific process steps that S1, hole forming allowanceis reserved; S2, process detection is performed; S3, trepanning and machining are conducted on the trunnion bearing seat; S4, the trunnion bearing is bored; According to the invention, high-precisionmachining control over an upper hinge point trunnion end cover, a lower hinge point trunnion end cover, a toppling shaft supporting base, a bridge upper trunnion base, a toppling shaft trunnion base and a locking plug pin trunnion base on a ship body is achieved; the middle tilting shaft is used as a supporting point for switching upper and lower hinge points of the bridge; the requirements of reamer excavation depths under different working conditions are met; shaft holes machined through the technology are high in precision, the requirement for switching the upper hinge point and the lower hinge point of the bridge with the middle toppling shaft as a supporting point is met, replacement time is short, and efficiency is high.

Description

technical field [0001] The invention relates to the technical field of self-propelled cutter suction dredgers, in particular to a bridge trunnion processing technology. Background technique [0002] The bridge frame is equipped with upper and lower trunnions, and its bearings are installed in the hulls on both sides of the bridge frame groove. By tilting the bridge, the trunnion can be changed between the upper and lower hinge points. Upper and lower trunnion replacements are done in-dock. [0003] The layout of the bridge trunnions includes 3 pairs of trunnion holes, trunnions, dumping shafts and locking pin shafts. One trunnion of the bridge frame corresponds to the two hinge points of the hull, and one locking pin corresponds to the two locking pin points of the hull. The main purpose is to use the middle tilting shaft as a "seesaw" to switch the upper and lower hinge points of the bridge frame. To meet the requirements of reamer digging depth in different working cond...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a bridge trunnion processing technology, which can solve the problem that the upper and lower trunnions are arranged on the upper and lower sides of the bridge of the cutter suction dredger. The shaft can be replaced between the upper and lower hinge points. Due to the poor accuracy of the hole shaft, the replacement is time-consuming and laborious.

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