Illumination methods for detecting displacement of ship shafting bearings
By combining a micrometer collimating telescope with an adjustable optical target and an eccentric target core, the problem of controlling the bearing position accuracy during the positioning and installation of ship shafting was solved, achieving the effects of uniform bearing load, stable operation, and low vibration and noise.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CSSC HUANGPU WENCHONG SHIPBUILDING CO LTD
- Filing Date
- 2024-01-04
- Publication Date
- 2026-05-26
Smart Images
Figure CN117818843B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of ship shafting installation technology, and in particular to a method for illuminating the displacement of ship shafting bearings. Background Technology
[0002] Ship shafting is generally a long shafting system, often with multiple bearings. The positioning and installation of ship shafting requires a reasonable alignment method. According to the shaft alignment calculation, each bearing in the shafting is set with different displacements based on the theoretical axis centerline, so as to achieve the goal of uniform load distribution, smooth operation, and minimal vibration and noise during shafting operation.
[0003] The positioning and installation of ship shafting is accomplished through ship shafting illumination. Current ship shafting illumination establishes a theoretical axis line according to shafting design requirements, and bearing displacement values are often achieved through manual scribing for horizontal or vertical translation. This method suffers from scribing deviations, typically ranging from 0.3mm to 0.8mm and varying from person to person. This makes it difficult to control the positional accuracy of bearing installation, resulting in uneven load distribution among bearings, unstable operation, and significant vibration and noise. Summary of the Invention
[0004] The purpose of this invention is to provide a method for illuminating bearing displacement in ship shafting systems, which can solve the problems of difficulty in controlling bearing positioning accuracy, uneven load on each bearing, unstable operation, and large vibration and noise caused by manually marking bearing displacement values in existing ship shafting positioning and installation methods.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A method for illuminating bearing displacement in a ship's shafting system is provided for use in ship shafting installation. The ship's shafting system includes multiple bearings arranged sequentially from bow to stern, each bearing having a displacement amount. The method for illuminating bearing displacement in the ship's shafting system includes the following steps:
[0007] Step S1: Based on the dimensions specified in the drawing, establish the first and second reference points for the theoretical axis centerline;
[0008] Step S2: Adjustable light targets are respectively set in the inner holes of multiple bearings. The multiple adjustable light targets are all located between the first reference point and the second reference point. The crosshair of the target center of the adjustable light target is confirmed. The crosshair of the target center coincides with the axis of the inner hole.
[0009] Step S3: Establish a micrometer collimating telescope behind the first reference point;
[0010] Step S4: Adjust the micrometer collimating telescope so that the crosshairs of the micrometer collimating telescope coincide with the first reference point and the second reference point;
[0011] Step S5: Based on the displacement, establish multiple parallel axes for positioning the bearings using the micrometer collimating telescope;
[0012] Step S6: Using the parallel axis for positioning of the multiple bearings as a reference, make the crosshair of the target center of the multiple bearings coincide with the parallel axis for positioning, thereby completing the positioning of each bearing.
[0013] In one embodiment, when the displacement of a portion of the bearing exceeds the maximum range of the micrometer collimating telescope, the following step is included before step S2:
[0014] Step S20: For the portion of the bearing whose displacement exceeds the maximum range, a central crosshair and an eccentric line are engraved on the target core surface of the adjustable target. The eccentricity value of the eccentric line is determined based on the displacement and the maximum range.
[0015] In one embodiment, when the displacement of a portion of the bearing exceeds the maximum range of the micrometer collimating telescope, step S2 further includes the following step:
[0016] Step S21: For the portion of the bearing whose displacement exceeds the maximum range, adjust the center of the adjustable target to be concentric with the inner hole of the bearing, and the eccentric line is parallel to the target center crosshair of the adjustable target.
[0017] In one embodiment, when the displacement of a portion of the bearing exceeds the maximum range of the micrometer collimating telescope, step S6 further includes the following step:
[0018] Step S61: For the portion of the bearing whose displacement exceeds the maximum range, make the eccentric line of the adjustable optical target coincide with the positioning parallel axis.
[0019] In one embodiment, the bearing includes an intermediate bearing, and step S21 specifically includes the following steps:
[0020] S210. A tooling dummy shaft is built into the intermediate bearing so that the center of the inner hole of the tooling dummy shaft coincides with the center of the inner hole of the intermediate bearing.
[0021] S211. Adjust the center of the adjustable light target to be concentric with the inner hole of the tooling dummy shaft, and the eccentric line is parallel to the target center cross line of the adjustable light target.
[0022] In one embodiment, step S5 specifically includes the following steps:
[0023] Step S51: Confirm the vertical and horizontal adjustment values of the micrometer collimating telescope at the multiple bearings;
[0024] Step S52: Based on the vertical adjustment value and the horizontal adjustment value, establish the parallel axes for positioning of the multiple bearings.
[0025] In one embodiment, when the displacement of a portion of the bearing exceeds the maximum range of the micrometer collimating telescope, step S51 specifically includes the following steps:
[0026] Step S511: For the portion of the bearing whose displacement exceeds the maximum range, the sum of the vertical adjustment value or the horizontal adjustment value and the eccentricity value is equal to the displacement.
[0027] In one embodiment, when the displacement is negative, the eccentric line is located above or to the right of the central crosshair; when the displacement is positive, the eccentric line is located below or to the left of the central crosshair.
[0028] In one embodiment, in step S20, the etching accuracy of the eccentric line is 0.01mm-0.02mm.
[0029] In one embodiment, the following step is included before step S1:
[0030] Step S0: Calculate the displacement of the multiple bearings according to the ship shafting installation process.
[0031] The beneficial effects of this invention are:
[0032] The illumination method for ship shafting bearing displacement provided by this invention, compared to existing illumination methods, first establishes a theoretical axis centerline and then establishes a parallel axis for positioning using a micrometer collimating telescope. This avoids the scribing deviation caused by manual scribing, fully considers the installation requirements of different bearing displacements, and can accurately position and install each bearing in a long shafting system, ensuring that each bearing bears a relatively uniform load, the shafting system runs smoothly, and vibration and noise are low. Moreover, the illumination method can be implemented using only existing equipment without requiring equipment modification, thus exhibiting good versatility. Attached Figure Description
[0033] Figure 1 This is a schematic flowchart of the illumination method for ship shafting bearing displacement provided in Embodiment 1 of the present invention;
[0034] Figure 2 This is a schematic diagram of the shafting arrangement structure of ship A provided in Embodiment 2 of the present invention;
[0035] Figure 3This is a schematic diagram of ship A undergoing ship shaft bearing displacement illumination according to Embodiment 2 of the present invention.
[0036] In the picture:
[0037] A31, Rear tail axle bracket bearing; A32, Front tail axle bracket bearing; A33, Tail shaft tube bearing; A71, No. 1 intermediate bearing; A72, No. 2 intermediate bearing; A81, Rear gearbox bearing; A82, Front gearbox bearing;
[0038] B2, Micrometer collimating telescope; B1, Support; B31, First reference point; B32, Second reference point; B41, Rear end of tail shaft bracket; B42, Front end of tail shaft bracket; B43, Rear end of front tail shaft bracket; B44, Front end of front tail shaft bracket; B45, Rear end of tail shaft tube; B46, Front end of tail shaft tube; B47, Rear end of No. 1 intermediate bearing; B48, Front end of No. 1 intermediate bearing; B49, Rear end of No. 2 intermediate bearing; B410, Front end of No. 2 intermediate bearing; B411, Rear end of gearbox output shaft; B412, Front end of gearbox output shaft;
[0039] A1. Propeller. Detailed Implementation
[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.
[0041] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0043] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.
[0044] Example 1
[0045] like Figure 1 As shown, this embodiment provides a method for illuminating the displacement of ship shafting bearings. This method is used for ship shafting installation. The ship shafting includes multiple bearings arranged sequentially from bow to stern, each bearing having a displacement amount. The method for illuminating the displacement of ship shafting bearings includes the following steps:
[0046] Step S1: Based on the dimensions specified in the drawing, establish the first and second reference points for the theoretical axis centerline;
[0047] Step S2: Set adjustable light targets in the inner holes of multiple bearings. All adjustable light targets are located between the first reference point and the second reference point. Confirm the crosshair of the target center of the adjustable light target. The crosshair of the target center coincides with the axis of the inner hole.
[0048] Step S3: Establish a micrometer collimating telescope behind the first reference point;
[0049] Step S4: Adjust the micrometer collimating telescope so that the crosshairs of the micrometer collimating telescope coincide with the first reference point and the second reference point; optionally, the first reference point is set at the stern and the second reference point is set at the bow.
[0050] Step S5: Based on the displacement, establish parallel axes for positioning multiple bearings using a micrometer collimating telescope. In this step, establishing parallel axes for positioning using a micrometer collimating telescope avoids scribing deviations caused by manual scribing and ensures the positional accuracy of bearing positioning and installation.
[0051] Step S6: Using the parallel axis for positioning multiple bearings as a reference, make the crosshairs of the target center of multiple bearings coincide with the parallel axis for positioning to complete the positioning of each bearing.
[0052] The illumination method for ship shafting bearing displacement provided in Embodiment 1 of this invention, compared to existing illumination methods, first establishes a theoretical axis centerline and then establishes a parallel axis for positioning using a micrometer collimating telescope. This avoids the scribing deviation caused by manual scribing, fully considers the installation requirements of different bearing displacements, and can accurately position and install each bearing in a long shafting system, ensuring that each bearing bears a relatively uniform load, the shafting system runs smoothly, and vibration and noise are low. Moreover, the illumination method can be implemented using only existing equipment without requiring equipment modification, thus exhibiting good versatility.
[0053] As a preferred embodiment, when the displacement of some bearings exceeds the maximum range of the micrometer collimating telescope, the following steps are included before step S2:
[0054] Step S20: For bearings whose displacement exceeds the maximum range, a central crosshair and an eccentric line are engraved on the surface of the target core of the adjustable optical target. The eccentricity value of the eccentric line is determined based on the displacement and the maximum range. By fabricating the eccentric target core, for bearings whose displacement exceeds the maximum range of the micrometer collimating telescope, the displacement is decomposed into the eccentricity value and determined jointly by the positioning parallel axis, thus broadening its applicability.
[0055] As a preferred embodiment, when the displacement of some bearings exceeds the maximum range of the micrometer collimating telescope, step S2 further includes the following steps:
[0056] Step S21: For the bearings whose displacement exceeds the maximum range, adjust the center of the adjustable target to be concentric with the inner hole of the bearing, and make the eccentric line parallel to the crosshair of the target center of the adjustable target.
[0057] As a preferred embodiment, when the displacement of some bearings exceeds the maximum range of the micrometer collimating telescope, step S6 further includes the following steps:
[0058] Step S61: For the bearings whose displacement exceeds the maximum range, make the eccentricity of the adjustable target coincide with the parallel axis for positioning.
[0059] As a preferred embodiment, the bearing includes an intermediate bearing, and step S21 specifically includes the following steps:
[0060] S210. A tooling dummy shaft is built into the intermediate bearing so that the center of the inner hole of the tooling dummy shaft coincides with the center of the inner hole of the intermediate bearing.
[0061] S211. Adjust the center of the adjustable target to be concentric with the inner hole of the tooling dummy shaft, with the eccentric line parallel to the crosshair of the adjustable target's center. In this step, since the intermediate bearings of ships are generally pre-installed, it is not convenient to directly install the adjustable target into the inner hole. Therefore, the convenience of operation can be improved by using a built-in tooling dummy shaft.
[0062] As a preferred embodiment, step S5 specifically includes the following steps:
[0063] Step S51: Confirm the vertical and horizontal adjustment values of the micrometer collimating telescope at multiple bearings;
[0064] Step S52: Based on the vertical and horizontal adjustment values, establish parallel axes for positioning multiple bearings.
[0065] As a preferred embodiment, when the displacement of some bearings exceeds the maximum range of the micrometer collimating telescope, step S51 specifically includes the following steps:
[0066] Step S511: For bearings whose displacement exceeds the maximum range, the sum of the vertical adjustment value or the horizontal adjustment value and the eccentricity value is equal to the displacement.
[0067] As a preferred option, when the displacement is negative, the eccentric line is located above or to the right of the central crosshair; when the displacement is positive, the eccentric line is located below or to the left of the central crosshair.
[0068] As a preferred embodiment, in step S20, the etching accuracy of the eccentric line is 0.01mm-0.02mm.
[0069] As a preferred embodiment, the following steps are included before step S1:
[0070] Step S0: Calculate the displacement of multiple bearings according to the ship's shafting installation process. This calculation process is not the focus of this application and will not be described in detail here.
[0071] Example 2
[0072] Embodiment 2 of the present invention provides a method for illuminating the displacement of ship shafting bearings. The method described in Embodiment 1 above is used to position and install the shafting bearings of ship A. A simplified diagram of the shafting arrangement of ship A is shown below. Figure 2As shown, the shafting system is approximately 40 meters long and has seven bearings installed. From stern to bow, they are: aft stern shaft bracket bearing A31, forward stern shaft bracket bearing A32, stern tube bearing A33, intermediate bearing No. 1 A71, intermediate bearing No. 2 A72, rear gearbox bearing A81, and forward gearbox bearing A82. Among them, the aft stern shaft bearing A31 includes the rear end of the aft stern shaft bearing B41 and the front end of the aft stern shaft bearing B42; the fore stern shaft bearing A32 includes the rear end of the fore stern shaft bearing B43 and the front end of the fore stern shaft bearing B44; the stern tube bearing A33 includes the rear end of the stern tube B45 and the front end of the stern tube B46; the No. 1 intermediate bearing A71 includes the rear end of the No. 1 intermediate bearing B47 and the front end of the No. 1 intermediate bearing B48; the No. 2 intermediate bearing A72 includes the rear end of the No. 2 intermediate bearing B49 and the front end of the No. 2 intermediate bearing B410; the rear gearbox bearing A81 and the front gearbox bearing A82 include the rear end of the gearbox output shaft B411 and the front end of the gearbox output shaft B412; and a propeller A1 is also provided at the stern.
[0073] The micrometer collimating telescope B2 used in this embodiment has a maximum range of 1.2 mm.
[0074] Based on the shaft alignment calculation sheet and relevant shaft construction drawings, the displacement of each bearing in the shaft system of ship A is calculated and shown in Table 1 below.
[0075] Table 1 Bearing Displacement
[0076]
[0077] According to the bearing displacement data in Table 1, it can be seen that the vertical displacement of intermediate bearings A71 (No. 1), A72 (No. 2), rear gearbox bearing A81, and front gearbox bearing A82 exceeds the maximum range of the micrometer collimating telescope B2. Therefore, it is necessary to set the eccentricity value of the eccentric target core for these four bearings. The rules for setting the eccentricity value of the eccentric target core are as follows: the difference between the absolute value of the vertical displacement of the bearing and the eccentricity value of the eccentric target core is less than the maximum range. Specifically, when the displacement is negative, the eccentric line in the schematic diagram of the eccentric target core surface is located above or to the right of the central crosshair; when the displacement is positive, the eccentric line is required to be located below or to the left of the central crosshair, as shown in the eccentric target core setting table in Table 2 below.
[0078] Table 2 Eccentric Target Setting Table
[0079]
[0080]
[0081] Based on the bearing displacement in Table 1 and the eccentric target setting table in Table 2, calculate the vertical and horizontal adjustment values of the micrometer collimating telescope B2 at the corresponding bearings, as shown in Table 3 below (Adjustment Value Table for Micrometer Collimating Telescope B2). Specifically, for intermediate bearings A71 (No. 1), A72 (No. 2), rear gearbox bearing A81, and front gearbox bearing A82, whose vertical displacement exceeds the maximum range of the micrometer collimating telescope B2, the sum of the absolute value of the vertical adjustment value and the eccentric value, as confirmed in Table 2, equals the absolute value of the bearing displacement. For rear tail shaft bearing A31, front tail shaft bearing A32, and tail tube bearing A33, whose vertical displacement does not exceed the maximum range of the micrometer collimating telescope B2, the vertical adjustment value equals the bearing displacement.
[0082] Table 3 Adjustment values for micrometer collimating telescope B2
[0083]
[0084]
[0085] Based on the bearing displacement in Table 1, the eccentric target setting table in Table 2, and the adjustment value table for micrometer collimating telescope B2 in Table 3, the bearing positioning and installation on ship A is performed using the method described in Example 1. Figure 3 As shown, the specific steps include:
[0086] Step 1: Check the shaft lighting conditions of ship A. Once the shaft lighting conditions are met during the construction phase, shaft lighting can begin.
[0087] Step 2: Based on the ship shafting installation process, calculate the bearing displacement of each bearing and obtain Table 1;
[0088] Step 3: According to the dimensions specified in the drawings, establish the first reference point B31 and the second reference point B32 of the theoretical axis. The first reference point B31 is located at the stern, and the second reference point B32 is located at the bow.
[0089] Step 4: For intermediate bearings A71 (No. 1), A72 (No. 2), rear bearing A81 (gearbox), and front bearing A82 (gearbox) whose bearing displacement exceeds the maximum range of micrometer collimating telescope B2, make the eccentric target core setting table in Table 2, and engrave the central crosshair and eccentric line on the target core surface of the adjustable target according to Table 2 to form the eccentric target core.
[0090] Step 5: Set adjustable light targets in the inner holes of the rear tail axle bearing A31 (rear tail axle bearing rear end B41 and rear tail axle bearing front end B42), the front tail axle bearing A32 (front tail axle bearing rear end B43 and front tail axle bearing front end B44), and the tail axle tube bearing A33 (tail axle tube rear end B45 and tail axle tube front end B46).
[0091] Step 6: For intermediate shaft systems that are inconvenient to measure, a tooling dummy shaft is built into intermediate bearing A71 and intermediate bearing A72, so that the inner hole center of the tooling dummy shaft coincides with the inner hole center of the intermediate bearing. Adjustable optical targets are respectively set at the rear end B47 and front end B48 of intermediate bearing A71, the rear end B49 and front end B410 of intermediate bearing A71.
[0092] Step 7: Adjust the center of the adjustable target in Step 6 to be concentric with the inner hole of the tooling dummy shaft, with the eccentric line parallel to the target crosshair of the adjustable target and located above the target crosshair, and lock the adjustable target.
[0093] Step 8: Set adjustable light targets at the rear end B411 and front end B412 of the gearbox output shaft of the rear bearing A81 and front bearing A82 of the gearbox respectively. Adjust the center of the corresponding adjustable light target to be concentric with the inner hole of the rear bearing A81 and front bearing A82 of the gearbox, with the eccentric line parallel to the crosshair of the adjustable light target and located above the crosshair. Lock the adjustable light target.
[0094] Step 9: Construct a micrometer collimating telescope B2 and its support B1 on the ground behind the first reference point B31.
[0095] Step 10: Adjust the micrometer collimating telescope B2 so that the crosshairs of the micrometer collimating telescope B2 coincide with the first reference point B31 and the second reference point B32. At the same time, the crosshairs of the micrometer collimating telescope B2 are in the horizontal and vertical directions, and the left and right measurement lines and the up and down measurement lines are all at the "0" mark.
[0096] Step 11: Based on the bearing displacement in Table 1, establish parallel axes for positioning at each bearing using the micrometer collimating telescope B2. Specifically, confirm the vertical and horizontal adjustment values of the micrometer collimating telescope B2 at each bearing, as shown in Table 3; then, based on the vertical and horizontal adjustment values in Table 3, establish parallel axes for positioning at each bearing.
[0097] Step 12: Using the parallel axis used for positioning each bearing as a reference, align the crosshair of the target center of each bearing with the parallel axis used for positioning to complete the positioning of each bearing. Specifically: First, adjust the rear end B41 and front end B42 of the rear tail axle bearing A31, the rear end B43 and front end B44 of the front tail axle bearing A32, and the rear end B45 and front end B46 of the tail tube of the tail tube of the tail tube, so that the crosshair of the target center of the above three bearings aligns with the crosshair established by the micrometer collimating telescope B2 in step 11 for the corresponding bearing. The crosshairs of the positioning parallel axis are aligned; next, the No. 1 intermediate bearing A71 (including the rear end B47 and the front end B48 of the No. 1 intermediate bearing), the No. 2 intermediate bearing A72 (including the rear end B49 and the front end B410 of the No. 2 intermediate bearing), and the gearbox rear bearing A81 and gearbox front bearing A82 (including the rear end B411 and the front end B412 of the gearbox output shaft) are adjusted so that the eccentric crosshairs of the eccentric target cores of the above four bearings are aligned with the crosshairs of the positioning parallel axis established by the micrometer collimating telescope B2 in step 11 for the corresponding bearings.
[0098] Step 13: Complete the shafting illumination of ship A.
[0099] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.
Claims
1. A method for illuminating bearing displacement in ship shafting systems, used for ship shafting installation, said ship shafting system comprising multiple bearings arranged sequentially from bow to stern, each of said bearings having a displacement amount, characterized in that... The optical illumination method for addressing the displacement of ship shafting bearings includes the following steps: Step S0: Calculate the displacement of the multiple bearings according to the ship shafting installation process; Step S1: Based on the dimensions specified in the drawing, establish the first and second reference points for the theoretical axis centerline; Step S2: Adjustable light targets are respectively set in the inner holes of multiple bearings. The multiple adjustable light targets are all located between the first reference point and the second reference point. The crosshair of the target center of the adjustable light target is confirmed. The crosshair of the target center coincides with the axis of the inner hole. Step S3: Establish a micrometer collimating telescope behind the first reference point; Step S4: Adjust the micrometer collimating telescope so that the crosshairs of the micrometer collimating telescope coincide with the first reference point and the second reference point; Step S5: Based on the displacement, establish multiple parallel axes for positioning the bearings using the micrometer collimating telescope; specifically including the following steps: Step S51: Confirm the vertical and horizontal adjustment values of the micrometer collimating telescope at the multiple bearings; Step S52: Based on the vertical adjustment value and the horizontal adjustment value, establish the parallel axes for positioning of the multiple bearings; Step S6: Using the parallel axis for positioning of the multiple bearings as a reference, make the crosshair of the target center of the multiple bearings coincide with the parallel axis for positioning, thereby completing the positioning of each bearing.
2. The method for illuminating the displacement of ship shafting bearings according to claim 1, characterized in that, When the displacement of a portion of the bearing exceeds the maximum range of the micrometer collimating telescope, the following steps are included before step S2: Step S20: For the portion of the bearing whose displacement exceeds the maximum range, a central crosshair and an eccentric line are engraved on the target core surface of the adjustable target. The eccentricity value of the eccentric line is determined based on the displacement and the maximum range.
3. The method for illuminating the displacement of ship shafting bearings according to claim 2, characterized in that, When the displacement of a portion of the bearing exceeds the maximum range of the micrometer collimating telescope, step S2 further includes the following steps: Step S21: For the portion of the bearing whose displacement exceeds the maximum range, adjust the center of the adjustable target to be concentric with the inner hole of the bearing, and the eccentric line is parallel to the target center crosshair of the adjustable target.
4. The method for illuminating the displacement of ship shafting bearings according to claim 2, characterized in that, When the displacement of a portion of the bearing exceeds the maximum range of the micrometer collimating telescope, step S6 further includes the following steps: Step S61: For the portion of the bearing whose displacement exceeds the maximum range, make the eccentric line of the adjustable optical target coincide with the positioning parallel axis.
5. The method for illuminating the displacement of ship shafting bearings according to claim 3, characterized in that, The bearing includes an intermediate bearing, and step S21 specifically includes the following steps: S210. A tooling dummy shaft is built into the intermediate bearing so that the center of the inner hole of the tooling dummy shaft coincides with the center of the inner hole of the intermediate bearing. S211. Adjust the center of the adjustable light target to be concentric with the inner hole of the tooling dummy shaft, and the eccentric line is parallel to the target center cross line of the adjustable light target.
6. The method for illuminating the displacement of ship shafting bearings according to claim 2, characterized in that, When the displacement of a portion of the bearing exceeds the maximum range of the micrometer collimating telescope, step S51 specifically includes the following steps: Step S511: For the portion of the bearing whose displacement exceeds the maximum range, the sum of the vertical adjustment value or the horizontal adjustment value and the eccentricity value is equal to the displacement.
7. The method for illuminating the displacement of ship shafting bearings according to claim 2, characterized in that, When the displacement is negative, the eccentric line is located above or to the right of the central crosshair; when the displacement is positive, the eccentric line is located below or to the left of the central crosshair.
8. The method for illuminating the displacement of ship shafting bearings according to claim 2, characterized in that, In step S20, the engraving accuracy of the eccentric line is 0.01mm-0.02mm.