Method for disassembling, assembling and quickly resetting marine intermediate bearing

Abstract

The invention relates to the technical field of ship shafting, and discloses a method for disassembling, assembling and quickly resetting a marine intermediate bearing, which is used for supporting an intermediate shaft and performing stress transfer on the intermediate shaft in the process of disassembling and assembling the intermediate bearing by connecting a shaft supporting roller to a lifting end of a jack. The initial position of the intermediate shaft is calibrated through the shaft positioning dial indicator, the stress transfer condition of the intermediate shaft is judged through the bearing dial indicator, and the position change condition of the intermediate bearing is detected. The method for disassembling, assembling and rapidly resetting the marine intermediate bearing is simple and rapid, the process is controllable, rapid resetting of the intermediate bearing can be guaranteed, operation of on-site constructors is facilitated, and a large amount of construction time is saved.

Description

Technical Field

[0001] The invention relates to the technical field of ship shafting, and in particular to a method for disassembling and quickly resetting a ship intermediate bearing. Background Art

[0002] The intermediate bearing is an important part of the ship shaft system. It plays the role of connecting the intermediate shafts in the main power system. Its installation accuracy is directly related to whether the ship shaft system can operate normally and the use effect of the ship main power system. During the installation of the ship shaft system, after the alignment is completed and the reaming of some main power equipment has been completed, if the intermediate bearing equipment is found to have problems and needs to be disassembled, direct disassembly will cause changes in the force of the ship shaft system. Generally, the entire shaft system needs to be re-aligned and reamed, which seriously affects the quality and speed of ship construction. Summary of the invention

[0003] The invention aims to solve at least one of the technical problems existing in the prior art. The invention provides a method for disassembling and quickly resetting a marine intermediate bearing, which can monitor the change of the shaft system during the disassembly and assembly of the intermediate bearing and can quickly reset the shaft system, thereby ensuring that the influence of the disassembly and assembly on the shaft system is controlled within a controllable range without disassembling the entire shaft system, and can ensure that the intermediate bearing returns to the original stress state after reassembly.

[0004] In order to achieve the above-mentioned object, the present invention provides a method for disassembling and quickly resetting a marine intermediate bearing, wherein the intermediate bearing is quickly disassembled and assembled by a disassembling assembly, wherein the disassembling and assembling assembly comprises a jack, a supporting shaft roller, a bearing dial indicator for being placed at the intermediate bearing, and a shaft positioning dial indicator for being placed at the intermediate shaft, wherein the supporting shaft roller is connected to the lifting end of the jack, wherein there is a predetermined maximum gap between the outer peripheral wall of the intermediate shaft and the inner peripheral wall of the intermediate bearing; and the method comprises the following steps:

[0005] The initial position of the intermediate shaft is calibrated, the intermediate shaft at the position corresponding to the intermediate bearing to be removed is supported by the supporting shaft roller, the rollers on both sides of the supporting shaft roller need to contact the intermediate shaft, the shaft positioning dial indicator is placed on the left and right sides of the intermediate shaft respectively, the value of the shaft positioning dial indicator is recorded as the initial value of the shaft positioning, so as to mark the initial position of the intermediate shaft, and the shaft positioning dial indicator remains unchanged during the disassembly and assembly process;

[0006] The initial position of the bearing is calibrated. A bearing dial indicator is placed on both sides of the axial direction at the upper end of the intermediate bearing, and the initial value of the bearing positioning of the bearing dial indicator is recorded, and the assembly position of the intermediate bearing is marked on the base; on the base of the intermediate bearing to be disassembled, the front and rear positions of the intermediate bearing on the base are marked, that is, a mark is made on the base to facilitate installation in the same position when reinstalling, usually just a line is drawn.

[0007] Force transfer and removal step: the jack lifts the intermediate shaft through the supporting shaft roller. When the values ​​of the bearing dial indicators on both sides are greater than or equal to the predetermined maximum gap, the lifting end of the jack stops rising, the bearing dial indicator whose value jumps first is the marking dial indicator, and the value of the marking dial indicator is recorded as the recovery value, and the intermediate bearing is removed; the upper bearing dial indicator is used to measure the force of the intermediate bearing. The dial indicator above the bearing is pressed against the intermediate bearing. When the force is gradually transferred to the supporting shaft roller, the intermediate shaft gradually leaves the intermediate bearing, and the bearing dial indicator above the intermediate bearing gradually starts to have a measurement value from zero. When one end of the intermediate bearing starts to rise, the bearing dial indicator above this end shows a reading. Continue to lift, when the bearing dial indicator at the other end also shows a measurement value, it indicates that the intermediate shaft has been separated from the intermediate bearing, and the force of the intermediate bearing has been completely transferred to the supporting shaft roller.

[0008] The bearing reassembly step includes moving the disassembled intermediate bearing to the marked assembly position, preliminarily assembling the intermediate shaft and the intermediate bearing, and adjusting the value of the marked dial indicator to the restored value;

[0009] The reset step is to synchronously lower and reset the intermediate shaft and the intermediate bearing by using a jack. When the value of the shaft positioning dial indicator is restored to the initial value of the shaft positioning, the bearing dial indicator is restored from the restored value to the initial value of the bearing positioning, and the intermediate bearing is assembled and fixed to complete the reset.

[0010] As a preferred embodiment, before the intermediate shaft initial position calibration step, a pre-inspection step is also included, in which a feeler gauge with a thickness equal to the maximum value of the predetermined gap is inserted toward the predetermined gap, and a predetermined gap is provided between the outer circumferential wall of the intermediate shaft and the inner circumferential wall of the intermediate bearing. The feeler gauge is inserted into the predetermined gap for trial, and the feeler gauge is deemed not to be able to be inserted into the predetermined gap.

[0011] As a preferred solution, in the force transfer and removal step, when the value of the marked dial indicator is greater than or equal to the predetermined maximum gap value, the lifting speed of the jack is reduced and the lifting is continued.

[0012] As a preferred solution, in the bearing reinstallation step, the lower half of the intermediate bearing is moved to the bottom of the intermediate shaft and to the journal position.

[0013] As a preferred solution, in the reinstallation step, the predetermined clearances on the top, left and right sides of other coaxial intermediate bearings are checked again, and a feeler gauge with a thickness equal to the maximum value of the predetermined clearance is inserted toward the predetermined clearance for trial, and the feeler gauge is deemed not to be able to be inserted into the predetermined clearance.

[0014] As a preferred solution, in the reinstallation step, jacking bolts are arranged at the lower part of the intermediate bearing.

[0015] As a preferred solution, in the resetting step, the force on the support shaft roller is transferred to the jacking bolt.

[0016] As a preferred embodiment, after the resetting step, a resetting adjustment step is also included, in which the corresponding predetermined clearance of the intermediate bearing after resetting is checked, and the bottom clearance is measured by a feeler gauge with a thickness equal to the maximum value of the predetermined clearance. The feeler gauge is tried to be inserted toward the predetermined clearance, and the feeler gauge is deemed not to be able to be inserted into the predetermined clearance. The sum of the left clearance and the right clearance is the total clearance, and the left clearance or the right clearance is 40%-60% of the total clearance.

[0017] As a preferred solution, after the resetting and adjusting step, a fixing step is also included, in which the reset intermediate bearing is fixed by a connecting piece, and the support shaft roller is removed.

[0018] As a preferred solution, in the force transfer and removal step, the adjustment pad is knocked loose and removed to facilitate the removal of the intermediate bearing;

[0019] After the fixing step, the adjusting spacer is reinstalled.

[0020] Compared with the prior art, the method for disassembling and quickly resetting a marine intermediate bearing according to the embodiment of the present invention has the following beneficial effects: by connecting the supporting shaft roller to the lifting end of the jack, the intermediate shaft is supported and the force is transferred to the intermediate shaft during the disassembly and assembly of the intermediate bearing. The initial position of the intermediate shaft is calibrated by the shaft positioning dial indicator, and the force transfer of the intermediate shaft is determined by the bearing dial indicator, and the position change of the intermediate bearing is detected. The resetting method of the present invention is simple and fast, the process is controllable, and it can ensure the rapid resetting of the intermediate bearing, which is convenient for on-site construction personnel to operate and saves a lot of construction time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the overall structure of an embodiment of the present invention.

[0022] Figure 2 It is a side view of the intermediate shaft supported by the supporting shaft roller according to an embodiment of the present invention.

[0023] Figure 3 It is a front view of the intermediate shaft supported by the supporting shaft roller according to an embodiment of the present invention.

[0024] Figure 4 It is a side view of the placement of the shaft positioning dial indicator and the bearing dial indicator according to the embodiment of the present invention.

[0025] Figure 5 It is a front view of the placement of the shaft positioning dial indicator according to an embodiment of the present invention.

[0026] Figure 6 It is a side view of the overall structure of an embodiment of the present invention.

[0027] In the figure:

[0028] 10. Intermediate shaft;

[0029] 20. Intermediate bearing;

[0030] 30. Jack; 31. Shaft roller; 32. Shaft positioning dial indicator; 33. Bearing dial indicator;

[0031] 40. Base; 41. Adjusting pad; 42. Fixing pad; 43. Predetermined gap. DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present invention, it should be understood that the terms "connected", "connected", "fixed" and the like used in the present invention should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a welding connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] like Figures 1 to 6 As shown, a method for disassembling and quickly resetting a marine intermediate bearing according to a preferred embodiment of the present invention is used to quickly disassemble and assemble the intermediate bearing 20 through a disassembly assembly, wherein the disassembly assembly comprises a jack 30, a shaft supporting roller 31, a bearing dial indicator 33 for being placed at the intermediate bearing 20, and a shaft positioning dial indicator 32 for being placed at the intermediate shaft 10, wherein the shaft supporting roller 31 is connected to the lifting end of the jack 30, wherein a predetermined maximum value of a gap 43 is provided between the outer peripheral wall of the intermediate shaft 10 and the inner peripheral wall of the intermediate bearing 20; and the steps are included:

[0036] The initial position of the intermediate shaft 10 is calibrated, such as Figures 2 to 3As shown, the supporting roller 31 supports the intermediate shaft 10 at the corresponding position of the intermediate bearing 20 to be removed, as shown in FIG. Figures 4 to 5 As shown, the shaft positioning dial gauge 32 is placed on the left and right sides of the intermediate shaft 10, and the value of the shaft positioning dial gauge 32 is recorded as the initial value of the shaft positioning to mark the initial position of the intermediate shaft 10. The shaft positioning dial gauge 32 remains unchanged during the disassembly and assembly process;

[0037] As one embodiment, the shaft positioning initial position of the shaft positioning dial indicator 32 is marked on the intermediate shaft 10 so that the position of the shaft positioning dial indicator 32 coincides with the shaft positioning initial position marked on the intermediate shaft 10 after the intermediate shaft 10 is reset, thereby improving the reset accuracy.

[0038] The initial position of the bearing is calibrated, such as Figures 4 to 5 As shown, bearing dial gauges 33 are placed on both sides of the axial direction of the upper end of the intermediate bearing 20, and the initial bearing positioning value of the bearing dial gauge 33 is recorded, and the assembly position of the intermediate bearing 20 is marked on the base 40;

[0039] As one embodiment, the initial position of the bearing dial indicator 33 is marked on the intermediate bearing 20, so that after the intermediate bearing 20 is reinstalled, the bearing dial indicator 33 is reset according to the initial position of the bearing dial indicator 33, thereby improving the reset accuracy of the intermediate bearing 20.

[0040] Force transfer and removal step: the jack 30 lifts the intermediate shaft 10 through the shaft roller 31. When the values ​​of the bearing dial indicators 33 on both sides are greater than or equal to the maximum value of the predetermined gap 43, the lifting end of the jack 30 stops rising to ensure that the force of the intermediate shaft 10 has been completely transferred to the shaft roller 31. The bearing dial indicator 33 whose value jumps first is the marked dial indicator. The value of the marked dial indicator is recorded as the restored value, and the intermediate bearing 20 is removed;

[0041] The bearing reassembly step is to move the disassembled intermediate bearing 20 to the marked assembly position, preliminarily assemble the intermediate shaft 10 and the intermediate bearing 20, and adjust the value of the marked dial indicator to the restored value;

[0042] In the reset step, the intermediate shaft 10 and the intermediate bearing 20 are synchronously lowered and reset by the jack 30. When the value of the shaft positioning dial indicator 32 is restored to the initial value of the shaft positioning, the bearing dial indicator 33 is restored from the restored value to the initial value of the bearing positioning, and the intermediate bearing 20 is assembled and fixed to complete the reset.

[0043] The method for disassembling and quickly resetting a marine intermediate bearing of the present invention connects a shaft supporting roller 31 to the lifting end of a jack 30, so as to support the intermediate shaft 10 and transfer the force to the intermediate shaft 10 during the disassembly and assembly of the intermediate bearing 20. The initial position of the intermediate shaft 10 is calibrated by the shaft positioning dial indicator 32, and the force transfer of the intermediate shaft 10 is determined by the bearing dial indicator 33, and the position change of the intermediate bearing 20 is detected. The resetting method of the present invention is simple and fast, and the process is controllable. It can ensure the rapid resetting of the intermediate bearing 20, facilitate the operation of on-site construction personnel, and save a lot of construction time.

[0044] As one embodiment, in the step of calibrating the initial position of the intermediate shaft 10 , a shaft positioning dial indicator 32 is placed on the upper end of the intermediate shaft 10 .

[0045] As one embodiment, the supporting position of the shaft roller 31 on the intermediate shaft 10 can be the front or rear end of the intermediate shaft 10 in the axial direction. The supporting position of the shaft roller 31 on the intermediate shaft 10 can support the intermediate shaft 10 and transfer the force.

[0046] Further, such as Figure 1 As shown, before the initial position calibration step of the intermediate shaft 10, a pre-checking step is also included, in which a feeler gauge with a thickness equal to the maximum value of the predetermined gap 43 is inserted toward the predetermined gap 43, and the predetermined gap 43 is provided between the outer peripheral wall of the intermediate shaft 10 and the inner peripheral wall of the intermediate bearing 20. The feeler gauge is inserted into the predetermined gap 43 for trial, and the feeler gauge is deemed to fail to be inserted into the predetermined gap 43. The pre-checking step ensures that the shaft system clearance is within a normal predetermined range, and ensures that the positional relationship between the intermediate bearing 20 and the intermediate shaft 10 is within a normal range before disassembly.

[0047] Furthermore, in the force transfer removal step, when the value of the marked dial indicator is greater than or equal to the maximum value of the predetermined gap 43, the lifting speed of the jack 30 is reduced and the lifting is continued. At this time, since the force of the intermediate shaft 10 on the intermediate bearing 20 has been partially transferred to the supporting shaft roller 31, the lifting speed is reduced to reduce the value change speed of the bearing dial indicator 33 on the other side, thereby improving the force transfer stability of the intermediate shaft 10 and avoiding excessive lifting.

[0048] Furthermore, in the bearing reinstallation step, the lower half of the intermediate bearing 20 is moved to the bottom of the intermediate shaft 10 and to the journal position, and the bearing is moved to the initial assembly position to prepare for the bearing reinstallation.

[0049] Furthermore, in the reinstallation step, the predetermined clearances 43 on the upper, left and right sides of other coaxial intermediate bearings 20 are checked, and a feeler gauge with a thickness equal to the maximum value of the predetermined clearance 43 is inserted toward the predetermined clearance 43 for trial, and the feeler gauge is deemed not to be able to be inserted into the predetermined clearance 43. Before the intermediate bearing 20 is reinstalled, ensure that the predetermined clearances 43 of the intermediate bearings 20 at other positions are within the normal range to ensure the qualification of the overall performance after reinstallation. Among them, due to the characteristics of the shaft system, the intermediate shaft 10 at the bearing generally falls at the bottom of the bearing, and the bottom clearance is generally 0, and the upper clearance and the left and right clearances are mainly measured.

[0050] As one embodiment, the maximum value of the predetermined gap 43 is 0.05 mm, wherein the thickness of the feeler gauge is set at 0.05 mm.

[0051] Furthermore, in the reinstallation step, a jacking bolt is arranged at the lower part of the intermediate bearing 20 to bear the force after the intermediate bearing 20 falls.

[0052] As one embodiment, four lifting bolts are provided and are spaced apart from each other at the lower portion of the intermediate bearing 20 .

[0053] Furthermore, in the resetting step, the force on the shaft roller 31 is transferred to the jacking bolt. The jack 30 under the shaft roller 31 is adjusted to fall slowly and gradually fall onto the jacking bolt. Note the bearing dial indicator 33 on the upper part of the intermediate bearing 20 at this time. Gradually lower the height of the jacking bolt. When the dial indicator above the shaft roller 31 measures a runout of less than or equal to 0.05 mm, observe whether the bearing dial indicator 33 on the intermediate bearing 20 returns to the initial value of the bearing positioning. If the error with the initial value of the bearing positioning is less than 0.05 mm, it is considered that the force on the shaft roller 31 is currently transferred to the intermediate bearing 20.

[0054] Furthermore, after the resetting step, a resetting adjustment step is also included, in which the corresponding predetermined gap 43 of the intermediate bearing 20 after resetting is checked, the bottom gap is checked with a feeler gauge having a thickness equal to the maximum value of the predetermined gap 43, and the feeler gauge is inserted toward the predetermined gap 43 for trial insertion, and the feeler gauge cannot be inserted into the predetermined gap 43. The sum of the left gap and the right gap is the total gap, and the left gap or the right gap is 40%-60% of the total gap. At this time, the gap between the intermediate bearing 20 and the intermediate shaft 10 is checked, and the bottom gap is checked with a 0.05 feeler gauge, which should not be inserted, and the left and right gaps should be 40%-60% of the total gap, which is the sum of the left and right gaps, in order to ensure that both ends are balanced and the gap on one side is not too small.

[0055] Furthermore, after the reset adjustment step, a fixing step is also included, in which the reset intermediate bearing 20 is fixed by a connecting piece, and the supporting shaft roller 31 is removed. After the intermediate bearing 20 is adjusted, it is fixed firmly with bolts, clamps, etc., and the temporary supporting shaft roller 31 is removed.

[0056] Furthermore, in the force transfer and removal step, the adjustment pad 41 is knocked loose and withdrawn to facilitate the removal of the intermediate bearing 20;

[0057] After the fixing step, reinstall the adjustment pad 41. The upper and lower surfaces of the adjustment pad 41 should be ground, and the coloring method should be used to check that there are no less than 3 contact points within each 25*25mm. Among them, blue oil is used for brushing to detect the contact area between the adjustment pad 41 and the upper equipment base and the lower equipment base 40 to ensure that there will be no excessive force caused by only contact. The gap between the adjustment pad 41 and the fixed pad 42 and the equipment base 40 is checked with a 0.05mm feeler gauge. Partial insertion is allowed with a depth of no more than 10mm; if checked with a 0.1mm feeler gauge, it should not be inserted. The intermediate bearing 20 is reinstalled and subsequent installation work is carried out.

[0058] In summary, the embodiment of the present invention provides a method for disassembling and quickly resetting a marine intermediate bearing 20, by connecting the shaft support roller 31 to the lifting end of the jack 30, so as to support the intermediate shaft 10 and transfer the force to the intermediate shaft 10 during the disassembly and assembly of the intermediate bearing 20. The initial position of the intermediate shaft 10 is calibrated by the shaft positioning dial indicator 32, and the force transfer of the intermediate shaft 10 is determined by the bearing dial indicator 33, and the position change of the intermediate bearing 20 is detected. The resetting method of the present invention is simple and fast, the process is controllable, and it can ensure the rapid resetting of the intermediate bearing 20, which is convenient for on-site construction personnel to operate and saves a lot of construction time.

[0059] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A method for disassembling and quickly resetting a marine intermediate bearing, characterized in that: The intermediate bearing is quickly disassembled and assembled by a disassembly assembly, wherein the disassembly assembly assembly comprises a jack, a shaft supporting roller, a bearing dial indicator for being placed at the intermediate bearing, and a shaft positioning dial indicator for being placed at the intermediate shaft, wherein the shaft supporting roller is connected to the lifting end of the jack, wherein there is a predetermined maximum gap between the outer peripheral wall of the intermediate shaft and the inner peripheral wall of the intermediate bearing; the steps include: The initial position of the intermediate shaft is calibrated, the intermediate shaft at the position corresponding to the intermediate bearing to be removed is supported by the supporting shaft roller, the rollers on both sides of the supporting shaft roller need to contact the intermediate shaft, the shaft positioning dial indicator is placed on the left and right sides of the intermediate shaft respectively, the value of the shaft positioning dial indicator is recorded as the initial value of the shaft positioning, so as to mark the initial position of the intermediate shaft, and the shaft positioning dial indicator remains unchanged during the disassembly and assembly process; The initial position of the bearing is calibrated. A bearing dial indicator is placed on both sides of the axial direction at the upper end of the intermediate bearing, and the initial value of the bearing positioning of the bearing dial indicator is recorded, and the assembly position of the intermediate bearing is marked on the base; on the base of the intermediate bearing to be disassembled, the front and rear positions of the intermediate bearing on the base are marked, that is, a mark is made on the base to facilitate installation in the same position when reinstalling, usually just a line is drawn. Force transfer and removal step: the jack lifts the intermediate shaft through the supporting shaft roller. When the values ​​of the bearing dial indicators on both sides are greater than or equal to the predetermined maximum gap, the lifting end of the jack stops rising, the bearing dial indicator whose value jumps first is the marking dial indicator, and the value of the marking dial indicator is recorded as the recovery value, and the intermediate bearing is removed; the upper bearing dial indicator is used to measure the force of the intermediate bearing. The dial indicator above the bearing is pressed against the intermediate bearing. When the force is gradually transferred to the supporting shaft roller, the intermediate shaft gradually leaves the intermediate bearing, and the bearing dial indicator above the intermediate bearing gradually starts to have a measurement value from zero. When one end of the intermediate bearing starts to rise, the bearing dial indicator above this end shows a reading. Continue to lift, when the bearing dial indicator at the other end also shows a measurement value, it indicates that the intermediate shaft has been separated from the intermediate bearing, and the force of the intermediate bearing has been completely transferred to the supporting shaft roller. The bearing reassembly step includes moving the disassembled intermediate bearing to the marked assembly position, preliminarily assembling the intermediate shaft and the intermediate bearing, and adjusting the value of the marked dial indicator to the restored value; The reset step is to synchronously lower and reset the intermediate shaft and the intermediate bearing by using a jack. When the value of the shaft positioning dial indicator is restored to the initial value of the shaft positioning, the bearing dial indicator is restored from the restored value to the initial value of the bearing positioning, and the intermediate bearing is assembled and fixed to complete the reset.

2. The method for disassembling and quickly resetting a marine intermediate bearing according to claim 1, characterized in that: Before the intermediate shaft initial position calibration step, a pre-inspection step is also included, in which a feeler gauge with a thickness equal to the maximum value of the predetermined gap is inserted into the predetermined gap, and the predetermined gap is provided between the outer circumferential wall of the intermediate shaft and the inner circumferential wall of the intermediate bearing. The feeler gauge is inserted into the predetermined gap for trial, and the feeler gauge is deemed not to be able to be inserted into the predetermined gap.

3. The method for disassembling and quickly resetting a marine intermediate bearing according to claim 1, characterized in that: In the force transfer and removal step, when the value of the marked dial indicator is greater than or equal to the predetermined maximum gap value, the lifting speed of the jack is reduced and the lifting is continued.

4. The method for disassembling and quickly resetting a marine intermediate bearing according to claim 1, characterized in that: In the bearing reinstallation step, the lower half of the intermediate bearing is moved below the intermediate shaft and to the journal position.

5. The method for disassembling and quickly resetting a marine intermediate bearing according to claim 1, characterized in that: In the reinstallation step, the predetermined clearances on the top, left and right sides of other coaxial intermediate bearings are checked again, and a feeler gauge with a thickness equal to the maximum value of the predetermined clearance is inserted toward the predetermined clearance for trial, and the predetermined clearance is judged to be the one that the feeler gauge cannot be inserted into.

6. The method for disassembling and quickly resetting a marine intermediate bearing according to claim 1, characterized in that: In the reinstallation step, jacking bolts are arranged at the lower part of the intermediate bearing.

7. The method for disassembling and quickly resetting a marine intermediate bearing according to claim 6, characterized in that: In the resetting step, the force on the support shaft roller is transferred to the lifting bolt.

8. The method for disassembling and quickly resetting a marine intermediate bearing according to claim 1, characterized in that: After the resetting step, a resetting adjustment step is also included, in which the corresponding predetermined clearance of the intermediate bearing after resetting is checked, the bottom clearance is measured by a feeler gauge with a thickness equal to the maximum value of the predetermined clearance, and the feeler gauge is tried to be inserted toward the predetermined clearance, and the feeler gauge is deemed not to be able to be inserted into the predetermined clearance. The sum of the left clearance and the right clearance is the total clearance, and the left clearance or the right clearance is 40%-60% of the total clearance.

9. The method for disassembling and quickly resetting a marine intermediate bearing according to claim 8, characterized in that: After the resetting and adjusting step, a fixing step is also included, in which the reset intermediate bearing is fixed by a connecting piece, and the support shaft roller is removed.

10. The method for disassembling and quickly resetting a marine intermediate bearing according to claim 9, characterized in that: In the force transfer and removal step, the adjustment pad is knocked loose and withdrawn to facilitate the removal of the intermediate bearing; After the fixing step, the adjusting spacer is reinstalled.

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