A kind of bridge trunnion processing technology

Abstract

The invention relates to a bridge trunnion processing technology, which is characterized in that: the specific process steps are as follows: including S1: reservation of opening allowance; S2: process inspection; S3: opening and processing of trunnion bearing seat; S4: trunnion Bearing boring; In the present invention, through the upper hinge point trunnion end cover on the hull, the lower hinge point trunnion end cover, the tilting shaft support seat and the upper trunnion seat of the bridge frame, the dumping shaft trunnion seat, and the locking pin trunnion High-precision processing control of the seat; use the middle dumping shaft as a support point to switch the upper and lower hinge points of the bridge frame; meet the requirements of reamer excavation depth in different working conditions; the shaft hole processed by this process has high precision, and meets the middle dumping shaft as the support point. The support point is required to switch the upper and lower hinge points of the bridge, and the replacement time is short and the 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.

Images