Middle bearing abrasion mechanism test bed based on marine universal coupling

Abstract

The invention provides an intermediate bearing wear mechanism test bench based on a marine universal coupling, and the test bench comprises a drive motor, a marine universal coupling A, a hydraulic loading device A, a tested intermediate bearing, a hydraulic loading device B, a marine universal coupling B, and an electric turning gear support. And an electric turning gear. The intermediate bearing to be tested is tested through the driving motor, the marine universal coupling A, the hydraulic loading device A, the hydraulic loading device B and the marine universal coupling B. The technical problem that in the prior art, an intermediate bearing abrasion mechanism test bed is lacked is solved.

Description

Technical Field:

[0001] The present invention relates to the field of ship propulsion device tests, and particularly to a test bench for the wear mechanism of an intermediate bearing based on a marine universal coupling. Background Art:

[0002] The propulsion shafting is one of the core parts of a ship's power system. The intermediate bearing is used to bear the load of the propulsion shafting. The internal lubrication system of the intermediate bearing brings lubricating oil into the gap between the shaft and the bearing bush, and forms a lubricating oil film between the shaft and the bearing bush through the operation of the shafting, so that friction only occurs inside the fluid, ensuring the safe operation of the shafting; and as a part of the shafting, the intermediate bearing bears large torque and shear force during the process of participating in power transmission, and adapts to the impact and vibration caused by power changes. The quality of the working performance of the intermediate bearing will directly affect the quality of the power performance of the ship propulsion system.

[0003] Therefore, carrying out research on the wear mechanism of the intermediate bearing, effectively predicting the bearing operation status, and optimizing the design of the bearing structure parameters according to the design requirements and analysis results are of great significance for reducing the friction resistance of the intermediate bearing, reducing the vibration and noise of the shafting, improving the transmission efficiency and reliability of the shafting, reducing material wear and extending the service life.

[0004] Obtaining the operating performance of the intermediate bearing through experimental tests is an important link in the research and development of ship propulsion systems. However, most conventional intermediate bearing test systems can only conduct single tests on medium and high-speed load performance, ignoring the influence of the turning operation condition (very low speed of about 0.33 r / min) on the wear of the intermediate bearing during actual use. At the same time, during the long-term operation of the intermediate bearing, the wear amount of the bearing bush increases, and the existing test bench cannot compensate for the offset of the shafting centerline caused by the wear of the intermediate bearing. Therefore, there is an urgent need for a test system that can simulate the actual use conditions of the intermediate bearing and can compensate for the offset of the shafting centerline.

[0005] Therefore, there is an urgent need for a test bench for the wear mechanism of an intermediate bearing based on a marine universal coupling, which helps to solve the technical problem that there is a lack of a test bench for the wear mechanism of an intermediate bearing in the prior art. Summary of the Invention:

[0006] In one embodiment, the present invention provides a test bench for the wear mechanism of an intermediate bearing based on a marine universal coupling, which conducts tests on the intermediate bearing to be tested through a driving motor, a marine universal coupling A, a hydraulic loading device A, a hydraulic loading device B, and a marine universal coupling B, and helps to solve the technical problem that there is a lack of a test bench for the wear mechanism of an intermediate bearing in the prior art.

[0007] The test bench for the wear mechanism of the intermediate bearing based on the marine universal coupling includes a driving motor, a marine universal coupling A, a hydraulic loading device A, a test intermediate bearing, a hydraulic loading device B, a marine universal coupling B, an electric barring machine support, and an electric barring machine;

[0008] The marine universal coupling A is connected to the driving motor;

[0009] The hydraulic loading device A is connected to the marine universal coupling;

[0010] The test intermediate bearing is connected to the hydraulic loading device A;

[0011] The hydraulic loading device B is connected to the test intermediate bearing;

[0012] The marine universal coupling B is connected to the hydraulic loading device B;

[0013] The electric barring machine support is connected to and supports the marine universal coupling B;

[0014] The electric barring machine is fixed on the electric barring machine support, and the electric barring machine is connected to the marine universal coupling B.

[0015] In one embodiment, the test bench for the wear mechanism of the intermediate bearing based on the marine universal coupling further includes a diaphragm coupling;

[0016] The diaphragm coupling is connected in series between the driving motor and the marine universal coupling A.

[0017] In one embodiment, the test bench for the wear mechanism of the intermediate bearing based on the marine universal coupling further includes a reduction gearbox;

[0018] The reduction gearbox is connected in series between the diaphragm coupling and the marine universal coupling A.

[0019] In one embodiment, the test bench for the wear mechanism of the intermediate bearing based on the marine universal coupling further includes a loading shaft A, a main shaft, and a loading shaft B;

[0020] The loading shaft A is connected in series between the hydraulic loading device A and the test intermediate bearing;

[0021] One end of the main shaft is connected to the loading shaft A, and the main shaft is used to sleeve the test intermediate bearing;

[0022] The loading shaft B is connected in series between the main shaft and the hydraulic loading device B.

[0023] In one embodiment, the test bench for the wear mechanism of the intermediate bearing based on the marine universal coupling further includes a transition flange shaft;

[0024] The transition flange shaft is connected in series between the marine universal coupling B and the electric barring gear support.

[0025] In one embodiment, the test bench for the wear mechanism of the intermediate bearing based on the marine universal coupling further includes a driving motor support, a tested intermediate bearing support, and a reduction gearbox support;

[0026] The driving motor support is used to support the driving motor;

[0027] The tested intermediate bearing support is used to support the tested intermediate bearing;

[0028] The reduction gearbox support is used to support the reduction gearbox.

[0029] In one embodiment, an outer housing is provided outside the tested intermediate bearing, and lubricating oil is filled in the outer housing.

[0030] In one embodiment, the marine universal coupling A includes an axial displacement mechanism and cross bearing assemblies at both ends;

[0031] The cross bearing assemblies and fork heads at both ends are hinged and installed at both ends of the axial displacement mechanism, and are connected between the reduction gearbox and the hydraulic loading device A.

[0032] In one embodiment, the hydraulic loading device A includes a rolling bearing, a pressure ring, a pull plate, and a hydraulic jack;

[0033] The rolling bearing is sleeved on the loading shaft A;

[0034] The pressure ring is sleeved on the rolling bearing;

[0035] The pull plate pulls on the pressure ring;

[0036] The hydraulic jack pressurizes the loading shaft A.

[0037] In one embodiment, the transition flange shaft is arranged in the electric barring gear. Description of the drawings:

[0038] Figure 1 It is the layout diagram of the test bench for the wear mechanism of the intermediate bearing based on the marine universal coupling in an embodiment of the present invention;

[0039] Figure 2 It is the front view of the marine universal coupling A in another embodiment of the present invention;

[0040] Figure 3 It is the side view of the hydraulic loading device A in another embodiment of the present invention;

[0041] Figure 4 The sectional front view of the connection between the loading shaft and the main shaft in another embodiment of the present invention;

[0042] Figure 5 The sectional front view of the transition flange shaft in another embodiment of the present invention;

[0043] Figure 6 The schematic diagram of the K-direction tapered guiding spline of the transition flange shaft in another embodiment of the present invention;

[0044] Figure 7 The output interface diagram of the electric barring gear in another embodiment of the present invention.

[0045] Reference numerals:

[0046] Drive motor 1

[0047] Diaphragm coupling 2

[0048] Reduction gearbox 3

[0049] Marine universal coupling A 4

[0050] Cross bearing assembly 4.1

[0051] Axial displacement mechanism 4.2

[0052] Fork head 4.3

[0053] Hydraulic loading device A 5

[0054] Rolling bearing 5.1

[0055] Pressing ring 5.2

[0056] Pulling plate 5.3

[0057] Hydraulic jack 5.4

[0058] Loading shaft A 6

[0059] Main shaft 7

[0060] Tested intermediate bearing 8

[0061] Loading shaft B 9

[0062] Hydraulic loading device B 10

[0063] Marine universal coupling B 11

[0064] Transition flange shaft 12

[0065] Electric barring gear 13

[0066] Electric barring gear support 14

[0067] Subject intermediate bearing bracket 15

[0068] Reducer gearbox bracket 16

[0069] Drive motor bracket 17 Specific embodiments:

[0070] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0071] Reference is made herein to the various aspects and features of the present application with reference to the accompanying drawings.

[0072] These and other features of the present application will become apparent from the following description of the preferred forms of the embodiments given as non - limiting examples with reference to the accompanying drawings.

[0073] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art can surely implement many other equivalent forms of the present application, which have the features as described in the claims and thus are all within the protection scope defined thereby.

[0074] When combined with the accompanying drawings, the above - mentioned and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description.

[0075] Hereinafter, specific embodiments of the present application will be described with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of the present application and can be implemented in various ways. Well - known and / or repetitive functions and structures have not been described in detail to clarify the true intention based on the user's historical operations and to avoid unnecessary or redundant details from obscuring the present application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but are merely used as a basis for the claims and a representative basis for teaching those skilled in the art to use the present application in substantially any suitable detailed structure in a variety of ways.

[0076] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", which may each refer to one or more of the same or different embodiments of the present application.

[0077] In view of the above problems, there is an urgent need for an intermediate bearing wear mechanism test bench with strong universality, rich working conditions, which can meet the actual working conditions of the simulated intermediate bearing and compensate for the offset of the shafting centerline, providing important support for the research of the intermediate bearing wear mechanism.

[0078] Figure 1 It is a layout diagram of an intermediate bearing wear mechanism test bench based on a marine universal coupling in an embodiment of the present invention; Figure 2Front view of marine universal coupling A in another embodiment of the present invention; Figure 3 Side view of hydraulic loading device A in another embodiment of the present invention; Figure 4 Sectional front view of the connection between the loading shaft and the main shaft in another embodiment of the present invention; Figure 5 Sectional front view of the transition flange shaft in another embodiment of the present invention; Figure 6 Schematic diagram of the K-direction tapered guide spline of the over flange shaft in another embodiment of the present invention; Figure 7 Output interface diagram of the electric barring gear in another embodiment of the present invention.

[0079] As Figures 1 to 7 As shown, in one embodiment, the present invention provides an intermediate bearing wear mechanism test bench based on a marine universal coupling. The intermediate bearing wear mechanism test bench based on the marine universal coupling includes a driving motor 1, a marine universal coupling A 4, a hydraulic loading device A 5, a test intermediate bearing 8, a hydraulic loading device B 10, a marine universal coupling B 11, and an electric barring gear support 14 and an electric barring gear 13;

[0080] The marine universal coupling A 4 is connected to the driving motor 1;

[0081] The hydraulic loading device A 5 is connected to the marine universal coupling 4;

[0082] The test intermediate bearing 8 is connected to the hydraulic loading device A 5;

[0083] The hydraulic loading device B 10 is connected to the test intermediate bearing 8;

[0084] The marine universal coupling B 11 is connected to the hydraulic loading device B 10;

[0085] The electric barring gear support 14 is connected to and supports the marine universal coupling B 11;

[0086] The electric barring gear 13 is fixed on the electric barring gear support 14, and the electric barring gear 13 is connected to the marine universal coupling B 11.

[0087] In one embodiment, the intermediate bearing wear mechanism test bench based on the marine universal coupling further includes a diaphragm coupling 2;

[0088] The diaphragm coupling 2 is connected in series between the driving motor 1 and the marine universal coupling A 4.

[0089] In one embodiment, the intermediate bearing wear mechanism test bench based on the marine universal coupling further includes a reduction gearbox 3;

[0090] The reduction gearbox 3 is connected in series between the diaphragm coupling 2 and the marine universal coupling A 4.

[0091] In one embodiment, the test bench for the wear mechanism of the intermediate bearing based on the marine universal coupling further includes a loading shaft A6, a main shaft 7, and a loading shaft B;

[0092] The loading shaft A6 is connected in series between the hydraulic loading device A5 and the intermediate bearing 8 to be tested;

[0093] One end of the main shaft 7 is connected to the loading shaft A6, and the main shaft 7 is used to sleeve the intermediate bearing 8 to be tested;

[0094] The loading shaft B9 is connected in series between the main shaft 7 and the hydraulic loading device B10. An outer shell is provided outside the main shaft 7 and filled with lubricating oil. The output end of the loading shaft A6 is connected to the input end of the main shaft 7 by screws. The sizes of the loading shaft A6 and the main shaft 7 can be modified to meet the test requirements of different models of intermediate bearings.

[0095] The marine universal coupling A4 and the marine universal coupling B11 have higher transmission efficiency and have the ability to compensate for angular, radial, and axial displacements, and can adaptively compensate for the deviation of the axis lines of the loading shaft A6, the main shaft 7, and the loading shaft B9 caused by the wear of the intermediate bearing 8 to be tested. The sizes and interfaces of the loading shaft A6, the main shaft 7, and the loading shaft B9 can be changed to meet the test requirements of different models of intermediate bearings, making the test system more universal. The hydraulic loading device A5 and the hydraulic loading device B10 can select different loading methods and loading forces according to different test requirements, enriching the test conditions.

[0096] In one embodiment, the test bench for the wear mechanism of the intermediate bearing based on the marine universal coupling further includes a transition flange shaft 12;

[0097] The transition flange shaft 12 is connected in series between the marine universal coupling B11 and the electric barring machine bracket 14.

[0098] In one embodiment, the test bench for the wear mechanism of the intermediate bearing based on the marine universal coupling further includes a drive motor bracket 17, an intermediate bearing bracket 15 to be tested, and a reduction gearbox bracket 16;

[0099] The drive motor bracket 17 is used to support the drive motor 1;

[0100] The intermediate bearing bracket 15 to be tested is used to support the intermediate bearing 8 to be tested;

[0101] The reduction gearbox bracket 16 is used to support the reduction gearbox 3.

[0102] In one embodiment, an outer shell is provided outside the intermediate bearing 8 to be tested, and lubricating oil is filled in the outer shell.

[0103] In one embodiment, the marine universal coupling A4 includes an axial displacement mechanism 4.2, and cross-bearing assemblies 4.1 and fork heads 4.3 at both ends;

[0104] The cross bearing assemblies 4.1 and the fork heads 4.3 at both ends are hingedly mounted at both ends of the axial displacement mechanism 4.2 and connected between the reduction gear box 3 and the hydraulic loading device A5.

[0105] It has the ability to compensate for angular, radial and axial displacements. Among them, the axial displacement mechanism 4.2 is a special marine structure that uses rolling bearings to transmit torque and can form axial displacement compensation through bearing rolling. Its friction coefficient can be reduced by two orders of magnitude compared with conventional universal couplings, which significantly reduces the impact on adjacent equipment and makes the test bench have higher test accuracy. In summary, the application of marine universal couplings in this test bench can effectively and adaptively compensate for the deviation of the axis centerline of the loading shaft A6, the main shaft 7, and the loading shaft B9 caused by the wear of the intermediate bearing 8 under test.

[0106] In one embodiment, the hydraulic loading device A5 includes a rolling bearing 5.1, a pressure ring 5.2, a pull plate 5.3, and a hydraulic jack 5.4;

[0107] The rolling bearing 5.1 is mounted on the loading shaft A6;

[0108] The pressure ring 5.2 is sleeved on the rolling bearing 5.1;

[0109] The pull plate 5.3 pulls on the pressure ring 5.2;

[0110] The hydraulic jack 5.4 applies pressure to the loading shaft A6. The hydraulic loading method is used to simulate the stress of the intermediate bearing in actual operation by applying a certain radial load. The magnitude of the loading force can be adjusted according to the test requirements.

[0111] In one embodiment, the transition flange shaft 12 is disposed in the electric turning machine 13. A tapered guide spline is machined at the output end of the transition flange shaft 12. The spline sleeve at the output end of the electric turning machine 13 can cooperate with the tapered guide spline at the output end of the transition flange shaft 12, and the automatic engagement / disengagement function of the electric turning machine and the transmission system is realized by controlling the axial movement of the spline sleeve at the output end of the electric turning machine 13. The two drive devices of the drive motor 1 and the electric turning machine 13 can meet the switching between high speed and extremely low speed to simulate the wear of the intermediate bearing of the ship under different speeds and turning conditions.

[0112] Effects of the invention:

[0113] An intermediate bearing wear mechanism test bench based on a marine universal coupling provided by the present invention can achieve the switching between extremely low speeds and high speeds, highly simulate the complex working conditions in actual ship operation, make the research results closer to the actual situation, provide an important test means for studying the wear mechanism and performance optimization of the intermediate bearing, and provide strong support for improving the reliability and safety of the ship power transmission system; a marine universal coupling is used to connect the driving device and the tested intermediate bearing, which can compensate for the deviation of the axis caused by the wear of the tested intermediate bearing while transmitting torque and speed; it has a variety of loading methods and adjustable loading forces, can meet the requirements under different test conditions, and improves the versatility of the test bench; the adjustable design of the marine intermediate bearing installation part improves the adaptability of the test bench to bearings of different specifications and models, and reduces the test cost.

[0114] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A test bench for the wear mechanism of the intermediate bearing of a marine universal coupling, characterized in that: The intermediate bearing wear mechanism test bench based on the marine universal coupling comprises: A driving motor (1); a marine universal coupling A (4), connected to the drive motor (1); a hydraulic loading device A (5), connected to the marine universal coupling (4); A tested intermediate bearing (8), which is connected to the hydraulic loading device A (5); a hydraulic loading device B (10), connected to the intermediate bearing (8) under test; a marine universal coupling B (11), connected to the hydraulic loading device B (10); An electric turning machine bracket (14) connected and supported with the marine universal coupling B (11); An electric turning machine (13) is fixed on the electric turning machine bracket (14), and the electric turning machine (13) is connected to the marine universal coupling B (11).

2. The intermediate bearing wear mechanism test bench based on a marine universal coupling according to claim 1 is characterized in that: The intermediate bearing wear mechanism test bench based on the marine universal coupling also includes: A diaphragm coupling (2) is connected in series between the drive motor and (1) the marine universal coupling A (4).

3. The intermediate bearing wear mechanism test bench based on the marine universal coupling according to claim 2 is characterized in that: The intermediate bearing wear mechanism test bench based on the marine universal coupling also includes: A reduction gear box (3) is connected in series between the diaphragm coupling (2) and the marine universal coupling A (4).

4. The intermediate bearing wear mechanism test bench based on a marine universal coupling according to claim 3 is characterized in that: The intermediate bearing wear mechanism test bench based on the marine universal coupling also includes: a loading shaft A (6) connected in series between the hydraulic loading device A (5) and the intermediate bearing (8) to be tested; a main shaft (7), one end of which is connected to the loading shaft A, and the main shaft (7) is used for sleeve-engaging the tested intermediate bearing (8); A loading shaft B (9) is connected in series between the main shaft (7) and the hydraulic loading device B (10).

5. The intermediate bearing wear mechanism test bench based on a marine universal coupling according to claim 4 is characterized in that: The intermediate bearing wear mechanism test bench based on the marine universal coupling also includes: A transition flange shaft (12) is connected in series between the marine universal coupling B (11) and the electric winch support (14).

6. The intermediate bearing wear mechanism test bench based on a marine universal coupling according to claim 5 is characterized in that: The intermediate bearing wear mechanism test bench based on the marine universal coupling also includes: a drive motor bracket (17) for supporting the drive motor (1); A tested intermediate bearing support (15), used for supporting the tested intermediate bearing (8); A reduction gear box bracket (16) is used to support the reduction gear box (3).

7. The intermediate bearing wear mechanism test bench based on a marine universal coupling according to claim 6 is characterized in that: An outer shell is arranged outside the tested intermediate bearing (8), and lubricating oil is filled in the outer shell.

8. The intermediate bearing wear mechanism test bench based on a marine universal coupling according to claim 7 is characterized in that: The marine universal coupling A (4) comprises: An axial displacement mechanism (4.2); The cross bearing assemblies (4.1) and fork heads (4.3) at both ends are hingedly mounted at both ends of the axial displacement mechanism (4.2) and connected between the reduction gear box (3) and the hydraulic loading device A (5).

9. The intermediate bearing wear mechanism test bench based on a marine universal coupling according to claim 8, characterized in that: The hydraulic loading device A (5) comprises: A rolling bearing (5.1) with its outer sleeve mounted on the loading shaft A (6); A pressure ring (5.2) whose outer sleeve is mounted on the rolling bearing (5.1); A pulling plate (5.3) pulling the pressing ring (5.2); A hydraulic jack (5.4) which pressurizes the loading axis A (6).

10. The intermediate bearing wear mechanism test bench based on a marine universal coupling according to claim 9, characterized in that: The transition flange shaft (12) is arranged in the electric turning machine (13).

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