CN-117184357-B - Installation method of hydraulic coupling of ship shafting

CN117184357BCN 117184357 BCN117184357 BCN 117184357BCN-117184357-B

Abstract

The invention discloses a method for installing a hydraulic coupling of a ship shafting, which comprises the steps of sleeving the hydraulic coupling on a first shaft, drawing the first shaft and a second shaft in a centering way, sequentially adjusting the positions of an inner sleeve and an outer sleeve of the hydraulic coupling, and finally installing a hydraulic coupling accessory. The hydraulic coupling can be quickly installed in place, the installation efficiency of the hydraulic coupling can be improved, the damage to the inner surface of the inner sleeve and the outer surface of the shafting in the positioning process of the inner sleeve can be reduced, the length of the connecting part of the two shaft sections of the hydraulic coupling after the hydraulic coupling is pressed and rotated can be ensured to be as long as possible, and the torque transmission is more balanced.

Inventors

JIANG XIAOTING
LU DEZHI
ZHI YINFENG
CHEN TING
DENG ZHIXING
ZHAO WEI

Assignees

沪东中华造船(集团)有限公司

Dates

Publication Date: 20260505
Application Date: 20230906

Claims (6)

1. The installation method of the hydraulic coupling of the ship shafting is characterized by comprising the following steps of: S1, a hydraulic coupler is sleeved on a first shaft, and the shaft end part of the first shaft extends out of the hydraulic coupler; S2, drawing the second shaft and centering the first shaft, respectively marking out a plurality of positioning lines on the first shaft and the second shaft, and projecting each positioning line on the adjacent side bulkhead to obtain a first inspection line corresponding to each positioning line; S3, determining an outer sleeve installation displacement S max of the hydraulic coupler, marking an inner sleeve positioning line of the hydraulic coupler on a second shaft according to the outer sleeve installation displacement S max and the inner sleeve and outer sleeve sizes of the hydraulic coupler, and marking a second inspection line on one side of the inner sleeve positioning line, which is far away from the large end face of the inner sleeve; the specific steps of marking the inner sleeve positioning line of the hydraulic coupler on the second shaft are as follows: Calculating the distance L between an inner sleeve positioning line and two shaft centering lines of the hydraulic coupler according to the outer sleeve mounting displacement S max and the sizes of the inner sleeve and the outer sleeve of the hydraulic coupler; according to the distance L between the inner sleeve positioning line and the two-axis centering line, the inner sleeve positioning line of the hydraulic coupler is marked on the second axis by taking the two-axis centering line as a starting point; The distance L=L 1 +(S 0 -S max between the inner sleeve positioning line and the two-axis centering line of the hydraulic coupler, wherein L 1 is half of the contact length between the inner sleeve and the outer sleeve of the hydraulic coupler, S 0 is a zero line, namely the theoretical initial distance between the large end surface of the inner sleeve and the corresponding side end surface of the outer sleeve when the hydraulic coupler leaves a factory, S max is the installation displacement of the outer sleeve; S4, slowly moving the hydraulic coupler until the large end face of the inner sleeve is overlapped with the inner sleeve positioning line; s5, connecting an oil inlet hole of the hydraulic coupler with an oil pump; s6, slowly moving the outer sleeve of the hydraulic coupler until the outer sleeve moves in place according to the outer sleeve mounting displacement S max of the hydraulic coupler; S7, installing the hydraulic coupling accessory.
2. The method for installing a hydraulic coupling for a marine shafting, according to claim 1, wherein the specific step of determining the sleeve installation displacement S max of the hydraulic coupling in S3 is: measuring the inner diameter of an inner sleeve of the hydraulic coupler and the outer diameter of the first shaft; Calculating an actual installation clearance of the inner sleeve according to the inner diameter of the inner sleeve and the outer diameter of the first shaft of the hydraulic coupling, wherein the actual installation clearance of the inner sleeve is equal to the difference between the inner diameter of the inner sleeve and the outer diameter of the first shaft; and according to a comparison table of the installation displacement and the installation clearance provided by a hydraulic coupling manufacturer, looking up a table to obtain the installation displacement corresponding to the actual installation clearance of the inner sleeve, wherein the installation displacement is the installation displacement S max of the outer sleeve.
3. The method for installing a hydraulic coupling for a marine shafting according to claim 1, wherein the oil inlet holes of the hydraulic coupling include radial oil inlet holes and axial oil inlet holes, In the step S6, the specific steps of slowly moving the outer sleeve of the hydraulic coupler according to the outer sleeve mounting displacement S max of the hydraulic coupler are as follows: Measuring the actual initial distance between the large end face of the inner sleeve and the corresponding side end face of the outer sleeve of the hydraulic coupler, judging whether the distance is equal to the theoretical initial distance S 0 , if not, pumping oil to the axial oil inlet hole to enable the outer sleeve to slowly move under the action of oil pressure until the distance between the large end face of the inner sleeve and the corresponding side end face of the outer sleeve is equal to the theoretical initial distance S 0 ; And then pumping oil to the radial oil inlet holes, when oil seeps out from the periphery of the contact surface of the inner sleeve and the outer sleeve at the non-piston end of the hydraulic coupling, pumping oil to the axial oil inlet holes and the radial oil inlet holes simultaneously to ensure that the outer sleeve continuously and slowly moves, and stopping pumping oil when the outer sleeve moves by the outer sleeve mounting displacement S max .
4. The method for installing a hydraulic coupling for a marine shafting, according to claim 3, wherein when oil is pumped into the axial oil inlet hole and the radial oil inlet hole simultaneously to enable the outer sleeve to continue to move slowly, whether the outer sleeve moves in place is judged by measuring the distance A between the end face of the outer sleeve and the large end face of the inner sleeve, and when the distance A=S 0 -S max between the end face of the outer sleeve and the large end face of the inner sleeve, the outer sleeve is indicated to move in place, and the oil pumping is stopped.
5. A method for installing a hydraulic coupling for a marine shafting according to claim 3, wherein a dial indicator is installed on the hydraulic coupling or the adjacent side wall and the pointer of the dial indicator is aligned to the end face of the outer sleeve, Meanwhile, when oil is pumped into the axial oil inlet hole and the radial oil inlet hole to enable the outer sleeve to continuously and slowly move, whether the outer sleeve moves in place is judged by observing the readings of the dial indicators, and when the readings of the dial indicators are equal to the mounting displacement S max of the outer sleeve, the outer sleeve is indicated to move in place, and the oil pumping is stopped.
6. The method for installing a hydraulic coupling according to claim 1, wherein the specific steps of installing the hydraulic coupling accessories in step S7 are: dismantling an oil pump, and installing a sealing screw on an oil inlet hole of the hydraulic coupler; And (3) coating silica gel on the contact part between the outer sleeve and the piston of the hydraulic coupler, installing a protective cover, and sleeving a rubber protective sleeve.

Description

Installation method of hydraulic coupling of ship shafting Technical Field The invention relates to the technical field of ship construction, in particular to a method for installing a hydraulic coupling of a ship shafting. Background The ship shafting is an important component in the ship power device, and the ship shafting is used for connecting the main engine and the propeller, transmitting power sent by the main engine to the propeller, and transmitting thrust generated by the propeller to the ship body so as to achieve the purpose of propelling the ship. The hydraulic coupling is a detachable coupling which can make two inner and outer sleeves with conical contact surfaces generate relative displacement under the action of oil pressure, and make the inner sleeve pinch the two connecting shafts under the action of elastic deformation after the oil pressure is removed. The traditional hydraulic coupler installation method is easy to roughen the inner surface of the inner sleeve and the outer surface of the shaft system when the inner sleeve of the hydraulic coupler is positioned, the relative positions of the inner sleeve and the two shafts are not detected in the installation process of the hydraulic coupler, and once the hydraulic coupler is in a gap between the two types in the installation process, serious consequences can be generated, and even the hydraulic coupler parts can be damaged. Disclosure of Invention In view of the above, the present invention provides a method for installing a hydraulic coupling of a marine shafting, which is used for solving the problems in the prior art. The installation method of the hydraulic coupling of the ship shafting specifically comprises the following steps: S1, a hydraulic coupler is sleeved on a first shaft, and the shaft end part of the first shaft extends out of the hydraulic coupler; S2, drawing the second shaft and centering the first shaft, respectively marking out a plurality of positioning lines on the first shaft and the second shaft, and projecting each positioning line on the adjacent side bulkhead to obtain a first inspection line corresponding to each positioning line; S3, determining an outer sleeve installation displacement S max of the hydraulic coupler, marking an inner sleeve positioning line l 1 of the hydraulic coupler on a second shaft according to the outer sleeve installation displacement S max and the inner sleeve and outer sleeve sizes of the hydraulic coupler, and marking a second inspection line on one side of the inner sleeve positioning line, which is far away from the large end face of the inner sleeve; s4, slowly moving the hydraulic coupler until the large end face of the inner sleeve is overlapped with the inner sleeve positioning line l 1; s5, connecting an oil inlet hole of the hydraulic coupler with an oil pump; s6, slowly moving the outer sleeve of the hydraulic coupler until the outer sleeve moves in place according to the outer sleeve mounting displacement S max of the hydraulic coupler; S7, installing the hydraulic coupling accessory. Preferably, the specific step of determining the sleeve mounting displacement S max of the hydraulic coupling in S3 is: measuring the inner diameter of an inner sleeve of the hydraulic coupler and the outer diameter of the first shaft; Calculating an actual installation clearance of the inner sleeve according to the inner diameter of the inner sleeve and the outer diameter of the first shaft of the hydraulic coupling, wherein the actual installation clearance of the inner sleeve is equal to the difference between the inner diameter of the inner sleeve and the outer diameter of the first shaft; and according to a comparison table of the installation displacement and the installation clearance provided by a hydraulic coupling manufacturer, looking up a table to obtain the installation displacement corresponding to the actual installation clearance of the inner sleeve, wherein the installation displacement is the installation displacement S max of the outer sleeve. Preferably, the specific step of marking the inner sleeve positioning line l 1 of the hydraulic coupling on the second shaft in S3 is as follows: Calculating the distance L between an inner sleeve positioning line and two shaft centering lines of the hydraulic coupler according to the outer sleeve mounting displacement S max and the sizes of the inner sleeve and the outer sleeve of the hydraulic coupler; And determining an inner sleeve positioning line L 1 of the hydraulic coupler on the second shaft by taking the two-shaft centering line as a starting point according to the distance L between the inner sleeve positioning line and the two-shaft centering line. Preferably, the distance l=l 1+(S0-Smax between the inner sleeve positioning line and the two-axis centering line of the hydraulic coupling, wherein L 1 is half of the contact length between the inner sleeve and the outer sleeve of the hydraulic coupling, S 0 is a zero line,