A test device, method and application for simulating the operation of a ship's propeller shaft

Abstract

The application belongs to the technical field of corrosion test devices, and discloses a test device and method for simulating the operation of a ship stern shaft and application. The test device for simulating the operation of a ship stern shaft comprises a machine body for testing test pieces of different diameters through a three-jaw chuck clamp, and an experimental box body for enabling the bearing support of the machine body to move forward and backward through a slide rail and be fixed at any position to determine the test piece. The test piece is convenient to disassemble and assemble, can be disassembled and assembled through the opening in the upper part of the box body, and is independently sealed by a box cover, so that the service life is not shortened due to frequent disassembly and assembly of the workpiece. The connection mode of the bearings of the device is mostly coupling and key connection, which can effectively transmit torque. The size of the test piece is adjustable, and the clamp of the device adopts a three-jaw chuck clamp, so that the diameter of the test piece can be adjusted.

Description

Technical Field

[0001] This invention belongs to the technical field of corrosion testing equipment, and particularly relates to a testing device, method and application for simulating the operation of a ship's stern shaft. Background Technology

[0002] The stern shaft, as the last section of the shafting system, is used to connect to the propeller and transmit power. The stern shaft operates under harsh conditions, being susceptible to corrosion from seawater and subjected to twisting and alternating bending stress, leading to various malfunctions and eventual failure. Therefore, conducting simulated operational studies of the stern shaft in a marine environment is of great significance.

[0003] Based on the above analysis, the existing technologies have the following problems and shortcomings: There are two main methods for studying the corrosion of materials in marine environments: one is on-site exposure testing of materials in actual marine environments, and the other is corrosion testing of materials in simulated marine environments. While the first method can realistically reflect the corrosion resistance in actual marine environments and provides accurate and reliable data, the test conditions are uncontrollable, the test cycle is long, the speed is slow, and it consumes a large amount of manpower and resources. The second method, although controllable, time-limited, and efficient, currently used simulation testing equipment cannot simultaneously and completely simulate the environment in which the stern shaft is located, making it difficult to achieve a realistic evaluation of the stern shaft's operating state. Summary of the Invention

[0004] To overcome the problems existing in related technologies, the present invention discloses a testing device, method, and application for simulating the operation of a ship's stern shaft. The innovation of this invention lies not only in the adjustable diameter and length of the test piece, but also in the ability to simultaneously measure multiple workpieces by adding multiple double-sided clamps. Furthermore, the liquid in the test chamber can be adjusted according to testing requirements, allowing for the simulation of different sea areas and external marine environments, as well as extreme marine environments such as high-acid environments, to further test the performance of the test piece.

[0005] The technical solution is as follows: A testing device for simulating the operation of a ship's stern shaft includes:

[0006] The machine body is used to test test pieces of different diameters using a three-jaw chuck clamp.

[0007] The experimental chamber is used to move the bearing bracket of the machine body back and forth and fix it in any position via a slide rail, so as to measure the test piece.

[0008] The double-sided fixture, as a detachable component, can test multiple workpieces of different sizes at the same time, facilitating comparative testing and reducing errors caused by differences in the external environment.

[0009] The test chamber, as the component that holds the liquid required for the test, contains liquids that are formulated according to the test requirements. It can not only simulate different sea areas and different external marine environments, but also simulate extreme marine environments such as high acidity to further test the performance of the workpiece under test.

[0010] In one embodiment, there are multiple three-jaw chuck clamps, and the slide rails are four slide rails. The bearing bracket moves back and forth and is fixed at any position through the four slide rails, and cooperates with multiple three-jaw chuck clamps to measure multiple test pieces simultaneously.

[0011] In one embodiment, the machine body is divided into inner and outer parts by a test chamber; the outer part includes: a drive shaft;

[0012] The internal components include: a dynamic friction disc, a static friction disc, a top clamp, a double-sided clamp, an end clamp, a speed reduction disc, a first speed reduction plate, a second speed reduction plate, a speed reduction plate bracket, a bearing bracket, a propeller, and a thrust sensor slider.

[0013] The drive shaft is connected to the motor via belt drive to transmit power and torque;

[0014] The dynamic friction disc and the static friction disc together form a sealing device. The static friction disc is fixed to the side wall of the test chamber for sealing the chamber.

[0015] The top clamp is connected to the bearing by a key and is used to fix the test piece;

[0016] The top clamp has a movable column for adjusting the position and direction of the clamping tool to facilitate adjusting the workpiece clamping.

[0017] The top clamp has a fixing post for fixing the clamping knife and allowing it to rotate around the fixing post;

[0018] The top clamp contains a clamping blade for fixing and clamping the workpiece.

[0019] The top clamp has a movable groove to limit the movement trajectory of the clamping tool;

[0020] The top clamp has a top chuck, which can be used to adjust and fix the position of the clamping blade by bolts;

[0021] The end clamp is connected to the torque sensor via a key and is used to fix the test piece;

[0022] The speed reducer is connected to the first coupling via a key and is also connected to the torque sensor. It is used in combination with the first speed reducer and the second speed reducer to reduce or lock the bearing.

[0023] The speed reducer bracket is fixed to the slide rail of the housing by bolts, and is used to support the movement of the first speed reducer and the second speed reducer;

[0024] The deceleration device has a return spring inside, which is used to return the small piston pushed out by the hydraulic oil to its original position.

[0025] The deceleration device has a small piston inside, which is used to push the first and second deceleration plates to make contact friction with the deceleration disk to reduce speed.

[0026] The bearing bracket is fixed to the slide rail of the housing by bolts, and is used to support the entire internal main body and the movement of the main body;

[0027] The propeller is keyed to the reduction gearbox via a second coupling to simulate the water flow impact experienced by the stern shaft during underwater operation.

[0028] The thrust sensor slider is used to fix one end of the thrust sensor;

[0029] The double-sided clamp, as a detachable component, is used to fix and connect two test pieces for simultaneous testing.

[0030] In one embodiment, the test device for simulating the operation of a ship's stern shaft further includes an overflow valve connected to the side of the test chamber.

[0031] The overflow valve, speed reducer, first speed reducer, second speed reducer, and speed reducer bracket constitute a safety device.

[0032] In one embodiment, the top clamp, the double-sided clamp, and the end clamp are all three-jaw chuck clamps.

[0033] In one embodiment, the torque sensor is connected to the test piece via an end clamp.

[0034] The thrust sensor is fixed on the bearing bracket.

[0035] In one embodiment, the test chamber includes a chamber body, a slide rail, a high-pressure drain valve, a chamber cover (204), a water level valve, and a high-pressure water inlet valve;

[0036] The enclosure is used to carry the main testing mechanism and the liquid required for the test;

[0037] The slide rail is directly fixed inside the housing and serves as the track for moving and fixing the bearing bracket;

[0038] The high-pressure drain valve is fixed to the outer end of the housing (201) and is used for draining water after the test process;

[0039] The lid is sealed with a sealing strip at the top of the box body to seal the entire box body;

[0040] The water level valve is fixed to the upper part of the housing and is used to provide water level and expel gas;

[0041] The high-pressure water inlet valve is fixed to the outside of the housing and is used to supply water during testing.

[0042] In one embodiment, the test device for simulating the operation of a ship's stern shaft further includes a pressurization device, wherein the pressurization chamber is fixed to the side of the test chamber.

[0043] Another objective of this invention is to provide a multi-factor comprehensive test method for simulating the operation of a ship's stern shaft, comprising the following steps:

[0044] S1, Place the test workpiece: Place the No. 1 test piece into the end clamping slot, rotate the chuck to position and fix the No. 1 test piece in the center, turn the bolt on the chuck with a wrench to clamp the No. 1 test piece, fix the end of the No. 1 test piece, add the double-sided clamp and fix it to the beginning of the No. 1 test piece, fix the beginning of the No. 2 test piece and clamp it in the top clamp, drag the double-sided clamp to move the two brackets along the slide rail, so that the double-sided clamping slot is at the end of the No. 2 test piece, fix and clamp the double-sided clamp, turn the bolt on the two brackets with a wrench to fix the two brackets;

[0045] S2, Sealing the box: Push the box cover onto the box and secure it in place;

[0046] S3, Water supply: Water is supplied through the high-pressure inlet valve. When the water reaches the water level valve, the high-pressure valve is closed.

[0047] S4, Pressurization: Pressurize using a pressurization device and analyze the pressure gauge reading;

[0048] S5, Perform the test: Start the motor and test the workpiece; during the test, analyze the data transmitted by the torque sensor and thrust sensor;

[0049] S6, Torque Test: With the motor off, the piston in the reducer bracket pushes the hydraulic oil in the bracket to move, causing the small piston to move forward, making the first and second reducers contact and rub against the reducer disc, generating a certain torque on the test piece. The torque and speed data are then transmitted through the torque sensor.

[0050] S7, Pressure Relief and Drainage: The internal water pressure is restored to its initial value through a pressurization device, and drainage is carried out through a high-pressure drain valve.

[0051] Another objective of this invention is to provide an application of the aforementioned test device for simulating the operation of a ship's stern shaft in corrosion tests under different sea areas and different external marine environmental conditions.

[0052] Combining all the above technical solutions, the advantages and positive effects of this invention are as follows:

[0053] First, addressing the technical problems existing in the prior art and the difficulty in solving them, this paper closely analyzes, in conjunction with the technical solution to be protected by this invention and the results and data obtained during the research and development process, how the technical solution of this invention solves the technical problems, and the inventive technical effects brought about by solving these problems. The specific description is as follows:

[0054] Existing devices for simulating ship stern shaft operation and marine corrosion cannot perfectly replicate the real marine environment in which the stern shaft operates. The purpose of this invention is to provide a device that integrates multiple factors to simulate the operation of a ship stern shaft. This invention simulates the real operating environment of a ship stern shaft and tests its erosion resistance, corrosion resistance, and the tensile and torque forces it withstands. As a device for testing stern shafts, this invention can test workpieces of varying sizes and lengths manufactured under different processes. It can also simultaneously operate different workpieces under the same conditions, facilitating comparative experiments and reducing errors caused by differences in the external environment. The liquid in the chamber can be adjusted according to testing needs, not only simulating different sea areas and external marine environments, but also simulating extreme marine environments such as high-acid environments to further test the performance of the workpiece under test.

[0055] Second, considering the technical solution as a whole or from the perspective of the product, the technical effects and advantages of the technical solution to be protected by this invention are specifically described as follows:

[0056] The test pieces of this invention are easy to disassemble and install. They can be removed and installed through the opening at the top of the housing, and the housing cover is independently sealed, avoiding frequent disassembly and installation that could shorten their service life. The bearings in this equipment are mostly connected by couplings and keys, which can effectively transmit torque.

[0057] The test piece dimensions of this invention are adjustable. The equipment uses a three-jaw chuck fixture, which allows for adjustment of the test piece diameter. Four slide rails are distributed on the housing, and the bearing bracket can move back and forth and be fixed in any position via the slide rails. The length of the workpiece being tested is adjustable.

[0058] This invention is expandable because it features multiple three-jaw chuck clamps and four slide rails on the housing. The bearing bracket can move back and forth and be fixed at any position via the slide rails, allowing for the simultaneous measurement of multiple test pieces.

[0059] This invention can simulate a variety of different marine environments. The tank serves as the component that carries the liquid required for the test. The liquid can be adjusted according to the test requirements. It can not only simulate different sea areas and different external marine environments, but also simulate extreme marine environments such as high acidity to further test the performance of the workpiece under test.

[0060] Third, as supplementary evidence of the inventive step of the claims of this invention, it is also reflected in the following important aspects:

[0061] (1) The expected benefits and commercial value of the technical solution of this invention after transformation are as follows:

[0062] This invention relates to a testing device and method for simulating the operation of a ship's stern shaft under real-world conditions.

[0063] This can reduce the costs associated with labor, transportation, and real-time monitoring when placing the manufactured shaft parts into the ocean for simulated corrosion experiments.

[0064] It can reduce the costs associated with erosion in simulated marine environments, including machinery, labor, transportation, and real-time monitoring. It allows for simultaneous impact and corrosion resistance testing of multiple parts, reducing the number of experimental steps, ensuring consistent testing conditions, and minimizing the cost of multiple inspections.

[0065] It can mimic the liquid environment in different sea areas and marine environments, fundamentally reducing labor, transportation, and testing costs.

[0066] Reduce the risks of sea trials and make testing more convenient.

[0067] (2) The technical solution of this invention fills a technical gap in the industry both domestically and internationally:

[0068] This invention provides a testing device and method for simulating the operation of ship stern shafts under real-world conditions. It can test the erosion and corrosion resistance of shaft components and monitor data such as torque and rotational speed in real time. Furthermore, it can test workpieces of different diameters and lengths, reducing the size limitations of the shafts being tested. Multiple workpieces can also be operated simultaneously under identical conditions, ensuring consistency of external conditions and facilitating comparisons. Finally, it can simulate different sea areas and external marine environments, as well as extreme marine environments such as high-acid environments, to further test the performance of the workpieces under test.

[0069] (3) Whether the technical solution of the present invention solves the technical problem that people have long wanted to solve but have never been able to solve successfully:

[0070] This invention provides a testing device and method for simulating the operation of ship stern shafts under real-world conditions. It can test the erosion and corrosion resistance of shaft components and monitor data such as torque and rotational speed in real time. Furthermore, it can test workpieces of different diameters and lengths, reducing the size limitations of the shafts being tested. Multiple workpieces can also be operated simultaneously under identical conditions, ensuring consistency of external conditions and facilitating comparisons. Finally, it can simulate different sea areas and external marine environments, including extreme marine environments such as high-acid environments, to further test the performance of the workpieces under test. This invention solves the problems of testing ship stern shafts in different marine environments, the inability to strictly define shaft dimensions due to different processes, and the inability to guarantee environmental consistency in multiple tests. It reduces testing costs and significantly reduces the dangers of sea trials, making testing more convenient.

[0071] (4) Does the technical solution of the present invention overcome technical bias?

[0072] This invention provides a testing device and method for simulating the operation of ship stern shafts under real-world conditions. It can simulate different marine environments by adjusting the testing fluid. Multiple double-sided clamps can be used to simultaneously test multiple shafts of different sizes. This invention offers a novel device and method for testing ship stern shafts, which could previously only be performed using real-world environments and equipment. Attached Figure Description

[0073] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0074] Figure 1A This is a top view of the test device for simulating the operation of a ship's stern shaft provided in an embodiment of the present invention;

[0075] Figure 1B This is a side view of the test device for simulating the operation of a ship's stern shaft provided in an embodiment of the present invention;

[0076] Figure 2 This is a front view of the main structure of the test device for simulating the operation of a ship's stern shaft provided in an embodiment of the present invention;

[0077] Figure 3A This is a full front sectional view of the top clamp of the test device for simulating the stern shaft operation of a ship provided in an embodiment of the present invention.

[0078] Figure 3B This is a side view of the top clamp of the test device for simulating the operation of a ship's stern shaft provided in an embodiment of the present invention.

[0079] Figure 4 This is a front view of the deceleration device of the test apparatus for simulating the operation of a ship's stern shaft provided in an embodiment of the present invention.

[0080] Figure 5 This is a front view of the sealing end face seal of the sealing device of the test apparatus for simulating the operation of a ship's stern shaft provided in an embodiment of the present invention.

[0081] Figure 6 This is a flowchart of a test method for simulating the operation of a ship's stern shaft using a multi-factor integrated approach, provided in an embodiment of the present invention.

[0082] In the diagram: 1. Machine body; 101. Drive shaft; 102. Dynamic friction disc; 103. Static friction disc; 104. Top clamp; 105. End clamp; 106. Reducer; 107. First reducer; 108. Second reducer; 109. Reducer bracket; 401. Movable column; 402. Fixed column; 403. Clamping knife; 404. Moving groove; 405. Top chuck; 901. Return spring; 902. Small piston; 110. Bearing bracket; 111. Propeller; 112. Thrust sensor slider; 113. Double-sided clamp; 2. Test chamber: 201. Chamber; 202. Slide rail; 203. High-pressure drain valve; 204. Chamber cover; 205. Water level valve; 206. High-pressure water inlet valve; 3. Torque sensor; 4. Thrust sensor; 5. First coupling; 6. Second coupling; 7. Pressure gauge; 8. Motor; 9. Pressurization device; 10. Safety device; 11. Relief valve. Detailed Implementation

[0083] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0084] I. Explanation of the Implementation Example:

[0085] An embodiment of the present invention provides a testing device for simulating the operation of a ship's stern shaft, comprising:

[0086] Machine body 1 is used to test test pieces of different diameters using a set three-jaw chuck clamp;

[0087] The experimental chamber 2 is used to move the bearing bracket of the machine body 1 back and forth and fix it in any position via a slide rail, so as to measure the test piece.

[0088] The three-jaw chuck fixture is multiple, the slide rail is four slide rails, the bearing bracket 110 moves back and forth and is fixed at any position through the four slide rails, and cooperates with multiple three-jaw chuck fixtures to measure multiple test pieces at the same time.

[0089] Example 1

[0090] like Figure 1A and Figure 1B As shown in the figure, the present invention provides a test device for simulating the operation of a ship's stern shaft, including a body 1, a test chamber 2, a torque sensor 3, a thrust sensor 4, a first coupling 5, a second coupling 6, a pressure gauge 7, a motor 8, a pressurizing device 9, a safety device 10, and an overflow valve 11.

[0091] The main body 1, serving as the core of the simulation device, is divided into inner and outer parts by the test chamber 2. It primarily includes a drive shaft 101, a dynamic friction disc 102, a static friction disc 103, a top clamp 104, a double-sided clamp 113, an end clamp 105, a reduction disc 106, a first reduction gear 107, a second reduction gear 108, a reduction gear support 109, a bearing support 110, a propeller 111, and a thrust sensor slider 112. Figure 2 As shown.

[0092] The machine body 1 has a drive shaft 101 on its exterior, which is connected to the motor 8 via belt drive to transmit power and torque.

[0093] The machine body 1 has a sealing device consisting of a dynamic friction disc 102 and a static friction disc 103 inside. The static friction disc 103 is fixed to the side wall of the housing 201 for sealing the housing and preventing water leakage during testing.

[0094] The body 1 has a top clamp 104 inside, which is connected to the bearing by a key and is used to fix the test piece.

[0095] The top clamp 104 has a movable column 401 for adjusting the position and direction of the clamping tool to facilitate the adjustment and clamping of the workpiece.

[0096] The top clamp 104 has a fixing post 402 for fixing the clamping knife and allowing it to rotate around the fixing post 402.

[0097] The top clamp 104 contains a clamping knife 403 for fixing and clamping the workpiece.

[0098] The top clamp 104 has a moving groove 404 for restricting the movement trajectory of the clamping tool.

[0099] The top clamp 104 has a top chuck 405, which can be used to adjust and fix the position of the clamping knife by bolts.

[0100] The body 1 has an end clamp 105 inside, which is connected to the torque sensor 3 by a key and is used to fix the test piece.

[0101] The machine body 1 has a speed reduction disc 106 inside, which is connected to the first coupling 5 by a key and connected to the torque sensor. It can be combined with the first speed reduction plate 107 and the second speed reduction plate 108 to reduce speed or lock the bearing.

[0102] The machine body 1 has a speed reduction plate bracket 109 inside, which is fixed to the slide rail of the housing by bolts, and is used to support the movement of the first speed reduction plate 107 and the second speed reduction plate 108.

[0103] The deceleration device has a return spring 901 inside, which is used to return the small piston 902 pushed out by the hydraulic oil to its original position.

[0104] The deceleration device has a small piston 902 inside, which is used to push the first deceleration plate 107 and the second deceleration plate 108 to make contact friction with the deceleration disk 106 to reduce speed.

[0105] The machine body 1 has a bearing bracket 110 inside, which is fixed to the slide rail of the box by bolts, and is used to support the entire internal main body and the movement of the main body.

[0106] The machine body 1 contains a propeller 111, which is connected to the reduction gear 106 via a second coupling 6, to simulate the water flow impact experienced by the stern shaft when it is running underwater.

[0107] The body 1 has a thrust sensor slider 112 inside, which is used to fix one end of the thrust sensor.

[0108] The double-sided clamp (113) is a detachable component used to fix and connect two test pieces for simultaneous testing.

[0109] In this embodiment of the invention, the test chamber 2 is composed of a chamber 201, a slide rail 202, a high-pressure drain valve 203, a chamber cover 204, a water level valve 205, and a high-pressure water inlet valve 206.

[0110] The experimental chamber 2 has a chamber 201, which is used to support the main testing mechanism and the liquid required for the test.

[0111] The experimental chamber 2 has a slide rail 202, which is directly fixed inside the chamber 201 and serves as a track for the movement and fixation of the bearing bracket.

[0112] The experimental chamber 2 has a high-pressure drain valve 203, which is fixed to the outer end of the chamber 201 for draining water after the test.

[0113] The experimental chamber 2 has a lid 204, and a sealing strip is used to seal the upper end of the chamber 201 to seal the entire chamber.

[0114] The experimental chamber 2 has a water level valve 205, which is fixed to the upper part of the chamber 201 and is used to observe the water level and expel gas.

[0115] The high-pressure water inlet valve (206) is fixed to the outside of the housing and is used to supply water during testing.

[0116] In this embodiment of the invention, the torque sensor 3 is a T40B series sensor, which is connected to the test piece via an end clamp 106.

[0117] In this embodiment of the invention, the thrust sensor 4 is an S-shaped tension / compression sensor, which is fixed on the bearing bracket 110.

[0118] In this embodiment of the invention, the first coupling 5 and the second coupling 6 are plum blossom couplings.

[0119] In this embodiment of the invention, the pressure gauge 7 is a stainless steel pressure gauge Y-100B with a range of 0~0.4 MPa.

[0120] In this embodiment of the invention, the motor 8 is a 370W variable frequency explosion-proof motor.

[0121] As shown in Figure 3, in this embodiment of the invention, the pressurizing device 9 is a CM—centrifugal booster pump, which is fixed to the side of the housing 201.

[0122] In this embodiment of the invention, the safety device 10 consists of an overflow valve 11, a speed reduction disc 106, a first speed reduction plate 107, a second speed reduction plate 108, and a speed reduction plate bracket 109.

[0123] The safety device 10 has a speed reduction disc 106, which is connected to the first coupling 5 by a key and connected to the torque sensor. It can be combined with the first speed reduction plate 107 and the second speed reduction plate 108 to decelerate or lock the bearing.

[0124] The safety device 10 has a speed reduction bracket 109, which is fixed to the slide rail of the housing by bolts, and is used to support the movement of the first speed reduction 107 and the second speed reduction 108.

[0125] In this embodiment of the invention, the overflow valve 11 is connected to the side of the housing 201 and is a mechanical overflow valve YF-L10H4.

[0126] Example 2

[0127] like Figure 6 As shown, this embodiment of the invention provides a multi-factor comprehensive test method for simulating the operation of a ship's stern shaft, comprising the following steps:

[0128] S101, Place the No. 1 test piece into the end clamp 105 slot, rotate the chuck to position and fix the No. 1 test piece in the center, turn the bolt on the chuck with a wrench to clamp the No. 1 test piece, fix the end of the No. 1 test piece, add the double-sided clamp 113 and fix it to the beginning of the No. 1 test piece, fix the beginning of the No. 2 test piece and clamp it in the top clamp 104, drag the double-sided clamp 113 to move the two brackets along the slide rail 202, so that the double-sided clamp slot is at the end of the No. 2 test piece, fix and clamp it, turn the bolt on the two brackets with a wrench to fix it in the appropriate position.

[0129] S102, Sealing the box: Push the box cover 204 onto the box body 201 and fix it to seal.

[0130] S103, Water supply: Water is supplied through the high-pressure inlet valve 203. When the water reaches the water level valve 205, the valve is closed.

[0131] S104, Pressurization: Pressurize using pressurization device 9 and observe the pressure on pressure gauge 7.

[0132] S105, Test: Start motor 8 to test the workpiece. During the test, the data transmitted by torque sensor 3 and thrust sensor 4 can be analyzed and observed.

[0133] S106, Test torque: With motor 8 off, the piston in the reducer bracket 109 pushes the hydraulic oil in the bracket to move, causing the small piston 902 to move forward, so that the first reducer 107, the second reducer 108 and the reducer disc 106 make contact friction, and a certain torque is generated on the test piece. The torque and speed data are obtained by transmitting through the torque sensor 3.

[0134] S107, the pressure relief and drainage are achieved by pressurizing device 9 to restore the internal water pressure to its initial value, and drainage is carried out through high-pressure drainage valve 203.

[0135] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0136] II. Application Examples:

[0137] Application Example 1

[0138] The testing device for simulating the operation of a ship's stern shaft, provided in this embodiment of the invention, can be used to test newly developed ship stern shaft materials in a real marine environment.

[0139] Application Example 2

[0140] The test device for simulating the operation of a ship's stern shaft provided in this embodiment of the invention can be used to test the erosion resistance and corrosion resistance of shaft parts.

[0141] Application Example 3

[0142] The test device for simulating the operation of a ship's stern shaft provided in this embodiment of the invention can be used to detect the torque and rotational speed of shaft parts in real time, and can measure the range of data such as the torque it can withstand and the rotational speed it can operate.

[0143] Application Example 4

[0144] The test device for simulating the operation of a ship's stern shaft provided in this embodiment of the invention can simulate marine environments under different conditions and obtain the required data more accurately.

[0145] III. Evidence of the relevant effects of the embodiments:

[0146] This invention relates to a testing device and method for simulating the operation of a ship's stern shaft. Compared to existing equipment, this invention can more comprehensively simulate the operation of a ship's stern shaft and realistically reflect the external loads and environment borne by the stern shaft. Compared to connecting the shaft to the test shaft via a coupling, this invention uses a three-jaw chuck to fix the test shaft, reducing limitations on the size of the test shaft. Compared to testing a single shaft, this invention can simultaneously test multiple shafts of different sizes using multiple double-sided clamps, facilitating comparative testing and reducing errors caused by differences in the external environment.

[0147] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention, and within the spirit and principles of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A testing device for simulating the operation of a ship's stern shaft, characterized in that, The test device simulating the operation of a ship's stern shaft includes: The machine body (1) is used to test test pieces of different diameters by means of a set three-jaw chuck clamp; The experimental chamber (2) is used to move the bearing bracket of the machine body (1) back and forth and fix it at any position through the slide rail, and to measure the test piece; The double-sided fixture (113), as a detachable component, can test multiple workpieces of different sizes at the same time, which facilitates comparative testing and reduces errors caused by differences in the external environment. The chamber (201) serves as a component that carries the liquid required for testing. The liquid is prepared according to the test requirements to simulate different sea areas and different external marine environments. It is also used to simulate high-acid extreme marine environments to further test the performance of the workpiece under test. The three-jaw chuck clamps are multiple, the slide rails are four slide rails, the bearing bracket (110) moves back and forth and is fixed at any position through the four slide rails and cooperates with multiple three-jaw chuck clamps to measure multiple test pieces at the same time; The machine body (1) is divided into inner and outer parts by the test chamber (2); the outer part includes: a drive shaft (101); The internal components include: a dynamic friction disc (102), a static friction disc (103), a top clamp (104), a double-sided clamp (113), an end clamp (105), a speed reduction disc (106), a first speed reduction plate (107), a second speed reduction plate (108), a speed reduction plate bracket (109), a bearing bracket (110), a propeller (111), and a thrust sensor slider (112). The drive shaft (101) is connected to the motor (8) via belt drive to transmit power and torque; The dynamic friction disc (102) and the static friction disc (103) form a sealing device. The static friction disc (103) is fixed on the side wall of the test chamber (201) for sealing the chamber. The top clamp (104) is connected to the bearing by a key and is used to fix the test piece; The top clamp (104) has a movable column (401) for adjusting the position and direction of the clamping tool to facilitate the adjustment and clamping of the workpiece; The top clamp (104) has a fixing post (402) inside, which is used to fix the clamping knife and make it rotate around the fixing post (402); The top clamp (104) contains a clamping knife (403) for fixing and clamping the workpiece; The top clamp (104) has a moving groove (404) for restricting the movement trajectory of the clamping tool; The top clamp (104) has a top chuck (405) which can be used to adjust and fix the position of the clamping knife by bolts; The end clamp (105) is connected to the torque sensor (3) by a key and is used to fix the test piece; The speed reducer (106) is connected to the first coupling (5) by a key and is connected to the torque sensor. It is combined with the first speed reducer (107) and the second speed reducer (108) to reduce or lock the bearing. The speed reducer bracket (109) is fixed to the slide rail (202) of the housing by bolts, and is used to support the speed reducer and the movement of the speed reducer; The deceleration device has a return spring (901) inside, which is used to return the small piston (902) pushed out by the hydraulic oil to its original position; The deceleration device has a small piston (902) inside, which is used to push the first deceleration plate (107) and the second deceleration plate (108) to make contact friction with the deceleration disk (106) to reduce speed. The bearing bracket (110) is fixed to the slide rail (202) of the housing by bolts, and is used to support the entire internal main body and the movement of the main body; The propeller (111) is keyed to the reduction gear (106) via the second coupling (6) to simulate the water flow impact that the stern shaft experiences when running underwater; The thrust sensor slider (112) is used to fix one end of the thrust sensor (4); The double-sided clamp (113) is a detachable component used to fix and connect two test pieces for simultaneous testing. The test device for simulating the operation of a ship's stern shaft also includes an overflow valve (11), which is connected to the side of the test chamber (201). The overflow valve (11), the speed reducer (106), the first speed reducer (107), the second speed reducer (108), and the speed reducer bracket (109) constitute the safety device (10). The top clamp (104), double-sided clamp (113), and end clamp (105) are all three-jaw chuck clamps.

2. The testing device for simulating the operation of a ship's stern shaft according to claim 1, characterized in that, The torque sensor (3) is connected to the test piece via an end clamp (105); The thrust sensor (4) is fixed on the bearing bracket (110).

3. The testing device for simulating the operation of a ship's stern shaft according to claim 1, characterized in that, The test chamber (2) includes a chamber body (201), a slide rail (202), a high-pressure drain valve (203), a chamber cover (204), a water level valve (205), and a high-pressure water inlet valve (206). The housing (201) is used to carry the main testing mechanism and the liquid required for the test; The slide rail (202) is directly fixed inside the housing (201) and serves as a track for moving and fixing the bearing bracket; The high-pressure drain valve (203) is fixed to the outer end of the housing (201) and is used for draining water after the test process; The lid (204) is sealed with a sealing strip at the upper end of the box body (201) to seal the entire box body (201). The water level valve (205) is fixed to the upper part of the housing (201) and is used to provide water level and expel gas; The high-pressure water inlet valve (206) is fixed to the outside of the housing and is used to supply water during testing.

4. The testing device for simulating the operation of a ship's stern shaft according to claim 1, characterized in that, The test device for simulating the operation of a ship's stern shaft also includes a pressurization device (9), with the pressurization chamber fixed to the side of the test chamber (201).

5. A multi-factor integrated testing method for simulating ship stern shaft operation using the testing device for simulating ship stern shaft operation as described in any one of claims 1-4, characterized in that, The multi-factor integrated test method for simulating ship stern shaft operation includes the following steps: S1, Place the test workpiece: Place the No. 1 test piece in the end clamp (105) slot, rotate the chuck to position and fix the No. 1 test piece in the center, turn the bolt on the chuck with a wrench to clamp the No. 1 test piece, fix the end of the No. 1 test piece, add the double-sided clamp (113) and fix it to the beginning of the No. 1 test piece, fix the beginning of the No. 2 test piece and clamp it in the top clamp (104), drag the double-sided clamp (113) to move the two supports along the slide rail (202) to the end of the No. 2 test piece, fix and clamp the double-sided clamp (113), turn the bolt on the two supports with a wrench to fix the two supports; S2, Sealing the box: Push the box cover (204) onto the box body (201) and fix and seal it; S3, Water supply: Water is supplied through the high-pressure inlet valve (206). When the water reaches the water level valve (205), the high-pressure drain valve (203) is closed. S4, pressurization: pressurize by pressurization device (9) and analyze the pressure of pressure gauge (7); S5, conduct the test: start the motor (8) and test the workpiece; during the test, analyze the data transmitted by the torque sensor (3) and the thrust sensor (4); S6, Test torque: Turn off the motor (8), push the hydraulic oil in the bracket to move through the piston in the reducer bracket (109), so that the small piston (902) moves forward, so that the first reducer (107), the second reducer (108) and the reducer (106) make contact friction, and a certain torque on the test piece is obtained through the torque sensor (3). S7, Pressure relief and drainage: The internal water pressure is restored to its initial value by pressurizing device (9), and drainage is carried out through high-pressure drainage valve (203).

6. The application of the testing device for simulating the operation of a ship's stern shaft as described in any one of claims 1-4 in corrosion tests of ship stern shafts under different sea areas and different external marine environmental conditions.

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