Ship shaft power testing device

Abstract

The utility model discloses a ship shaft power testing device. The testing device is composed of a testing table, a power mechanism, a resistance adjusting mechanism, a torque measuring mechanism and a rotating speed testing mechanism, the power mechanism, the resistance adjusting mechanism, the torque measuring mechanism and the rotating speed testing mechanism are all installed on the upper side of the testing table, and a detection shaft is installed at the front end of the power mechanism. The other end of the detection shaft is installed at the front end of the torque measuring mechanism, and a transmission mechanism is arranged between the resistance adjusting mechanism and the rotation speed testing mechanism and between the resistance adjusting mechanism and the detection shaft. According to the utility model, in the transmission process, the torque measuring mechanism can accurately capture the torque change on the detection shaft; the rotating speed testing mechanism is linked with the detection shaft through the transmission mechanism to obtain rotating speed data in real time; the resistance adjusting mechanism applies different resistances to the detection shaft through the transmission mechanism to simulate the stress conditions of the ship in various sailing states.

Description

Technical Field

[0001] This utility model relates to the field of ship shaft power testing technology, specifically a ship shaft power testing device. Background Technology

[0002] The ship's shafting system is a crucial component of its propulsion system, primarily consisting of drive shafts and bearings. Drive shafts include the thrust shaft (in some diesel engines, the thrust shaft and crankshaft are integrated), intermediate shaft, and stern shaft; bearings include thrust bearings (in some diesel engines, the thrust bearing is located within the engine block), intermediate bearings, and stern bearings. Their function is to transmit the torque from the diesel engine crankshaft to the propeller to overcome the resistance torque generated by the propeller's rotation in water, and simultaneously transmit the thrust generated by the propeller to the thrust bearings to overcome the resistance during ship navigation. Ship shaft power testing is required during the manufacturing and processing of ship shafts, necessitating the use of a ship shaft power testing device.

[0003] Chinese Patent No. 202021487430.8 discloses a calibration device for a ship shaft power testing equipment, including a platform. A motor is installed on the platform, and the shaft of the motor is connected to the input shaft of a reducer. The output shaft of the reducer is connected to one end of the shaft under test. The shaft under test passes through a torque sensor, and the other end of the shaft under test is connected to a shaft on a load device. A simulation chamber is provided at the bottom of the platform, and a horizontal shaft is provided inside the simulation chamber. A propeller is provided on the horizontal shaft, and the horizontal shaft is connected to the shaft under test by a transmission belt. A wave pump is also provided on the side wall of the simulation chamber.

[0004] When this utility model is in use, the resistance of the shaft cannot be adjusted, resulting in inaccurate test data. Utility Model Content

[0005] The purpose of this invention is to provide a ship shaft power testing device to solve the problems raised in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a ship shaft power testing device, wherein the testing device comprises a test platform, a power mechanism, a resistance adjustment mechanism, a torque measuring mechanism, and a speed testing mechanism. The power mechanism, resistance adjustment mechanism, torque measuring mechanism, and speed testing mechanism are all mounted on the upper side of the test platform. A detection shaft is mounted at the front end of the power mechanism, and the other end of the detection shaft is mounted at the front end of the torque measuring mechanism. A transmission mechanism is provided between the resistance adjustment mechanism, the speed testing mechanism, and the detection shaft. The transmission mechanism is mounted on both sides of one end of the detection shaft and at one end of the resistance adjustment mechanism and the speed testing mechanism. A leveling mechanism is installed around the bottom of the test platform.

[0007] Preferably, the resistance adjustment mechanism consists of a third shaft and a resistance adjuster, wherein the resistance adjuster is mounted on the upper side of the test bench, and the third shaft is rotatably mounted on the front end of the resistance adjuster.

[0008] Preferably, the resistance adjuster comprises a mounting box, an electromagnetic push rod, and a friction plate. The mounting box is mounted on the upper side of the test bench, the electromagnetic push rod is mounted on both sides and the upper end of the mounting box, and the friction plate is mounted on one end of the electromagnetic push rod. The friction plate is in contact with the third shaft.

[0009] Preferably, the torque measuring mechanism consists of a torque measuring instrument and a first shaft. The torque measuring instrument is mounted on the upper side of the test bench, one end of the first shaft is mounted on the front end of the torque measuring instrument, and the other end of the first shaft is mounted on one end of the detection shaft.

[0010] Preferably, the speed testing mechanism consists of a speed measuring instrument and a second shaft. The speed measuring instrument is mounted on the upper side of the test platform, and the second shaft is mounted on the front end of the speed measuring instrument.

[0011] Preferably, the power mechanism consists of an electric motor and a transmission, both of which are mounted on the upper side of the test bench, with one end of the transmission shaft mounted on the front end of the electric motor.

[0012] Preferably, the transmission mechanism consists of a synchronous belt and a synchronous pulley, with the synchronous pulley mounted on the upper side of the detection shaft, the second shaft, or the third shaft, and the synchronous belt sleeved on the upper side of the synchronous pulley.

[0013] Preferably, the leveling mechanism consists of a threaded rod, a handle, a threaded cylinder, and a base plate. The threaded cylinder is installed around the bottom of the test bench, the threaded rod is rotatably installed inside the threaded cylinder, the handle is installed on the upper side of the threaded rod, and the base plate is rotatably installed at the bottom end of the threaded rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. During the transmission process, the torque measuring mechanism can accurately capture the torque changes on the detection shaft; the speed testing mechanism is linked with the detection shaft through the transmission mechanism to obtain speed data in real time; the resistance adjustment mechanism applies different resistances to the detection shaft through the transmission mechanism to simulate the force conditions of a ship under various navigation conditions.

[0016] 2. The mounting box provides installation space and protection for the electromagnetic push rod and friction plate. When it is necessary to increase resistance, the electromagnetic push rod is energized, and the electromagnetic force pushes the friction plate towards the third shaft, making the friction plate and the third shaft in close contact. The friction increases the resistance to the rotation of the third shaft. When it is necessary to reduce resistance, the electromagnetic push rod is de-energized, causing the friction plate to separate from the third shaft or reducing the contact pressure, thereby reducing resistance. This allows for precise adjustment of resistance, simulating different load conditions during ship navigation.

[0017] 3. The second shaft is linked to the detection shaft through a transmission mechanism. When the detection shaft rotates, it drives the second shaft to rotate synchronously. The speed sensor inside the speed measuring instrument monitors the rotation of the second shaft in real time and converts the rotational motion of the shaft into electrical pulse signals or other processable signals. By counting and calculating the signals, the speed of the second shaft, i.e. the speed of the detection shaft, is accurately obtained, providing important parameters for the calculation of ship shaft power.

[0018] 4. After the electric motor is powered on, it converts electrical energy into mechanical energy and generates rotational power. The gearbox adjusts the output speed and torque of the electric motor according to the test requirements. Through gear transmission and other means, it transmits the power of appropriate speed and torque to the test shaft, simulating the operating power of the ship shafting under different working conditions, and providing a stable power source for ship shaft power testing. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a top view of the structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the resistance regulator of this utility model;

[0023] Figure 4 This is a schematic diagram of the leveling mechanism of this utility model.

[0024] In the diagram: 1. Testing device; 2. Testing platform; 3. Leveling mechanism; 4. Torque measuring mechanism; 5. Resistance adjusting mechanism; 6. Speed ​​testing mechanism; 7. Transmission mechanism; 8. Power mechanism; 9. Gearbox; 10. Electric motor; 11. Speed ​​measuring instrument; 12. Second shaft; 13. Synchronous pulley; 14. Synchronous belt; 15. Torque measuring instrument; 16. First shaft; 17. Detection shaft; 18. Third shaft; 19. Resistance adjusting instrument; 20. Handle; 21. Threaded rod; 22. Threaded cylinder; 23. Base plate; 24. Mounting box; 25. Electromagnetic push rod; 26. Friction plate. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 In this embodiment of the utility model, a ship shaft power testing device is provided, comprising a testing device 1. The testing device 1 consists of a testing platform 2, a power mechanism 8, a resistance adjustment mechanism 5, a torque measuring mechanism 4, and a speed testing mechanism 6. The power mechanism 8, the resistance adjustment mechanism 5, the torque measuring mechanism 4, and the speed testing mechanism 6 are all installed on the upper side of the testing platform 2. A detection shaft 17 (not labeled with a serial number) is installed at the front end of the power mechanism 8 and will not be processed for the time being. The other end of the detection shaft 17 is installed at the front end of the torque measuring mechanism 4. A transmission mechanism 7 is provided between the resistance adjustment mechanism 5, the speed testing mechanism 6, and the detection shaft 17. The transmission mechanism 7 is installed on both sides of one end of the detection shaft 17 and one end of the resistance adjustment mechanism 5 and the speed testing mechanism 6. A leveling mechanism 3 is installed around the bottom of the testing platform 2.

[0027] The resistance adjustment mechanism 5 consists of a third shaft 18 and a resistance adjuster 19. The resistance adjuster 19 is installed on the upper side of the test bench 2, and the third shaft 18 is rotatably installed at the front end of the resistance adjuster 19. During operation, the third shaft 18 can rotate under the action of the resistance adjuster 19. When it is necessary to adjust the resistance, the components inside the resistance adjuster 19 work together to change the way the third shaft 18 is acted upon, thereby changing the magnitude of the resistance transmitted from the third shaft 18 to the detection shaft 17, so as to realize the simulation and adjustment of the test load to adapt to different test conditions.

[0028] The resistance regulator 19 consists of a mounting box 24, an electromagnetic push rod 25, and a friction plate 26. The mounting box 24 is installed on the upper side of the test bench 2. The electromagnetic push rod 25 is installed on both sides and the upper end of the mounting box 24. The friction plate 26 is installed at one end of the electromagnetic push rod 25. The friction plate 26 can be connected to the third shaft 18. The mounting box 24 provides installation space and protection for the electromagnetic push rod 25 and the friction plate 26. When it is necessary to increase the resistance, the electromagnetic push rod 25 is energized, and the electromagnetic force pushes the friction plate 26 towards the third shaft 18, so that the friction plate 26 is in close contact with the third shaft 18, and the friction force increases the resistance to the rotation of the third shaft 18. When it is necessary to reduce the resistance, the electromagnetic push rod 25 is de-energized, which causes the friction plate 26 to separate from the third shaft 18 or reduces the contact pressure, thereby reducing the resistance and achieving precise adjustment of the resistance to simulate different load conditions during ship navigation.

[0029] The torque measuring mechanism 4 consists of a torque measuring instrument 15 and a first shaft 16. The torque measuring instrument 15 is mounted on the upper side of the test bench 2. One end of the first shaft 16 is mounted on the front end of the torque measuring instrument 15, and the other end of the first shaft 16 is mounted on one end of the detection shaft 17. The first shaft 16 is connected to the detection shaft 17. When the detection shaft 17 transmits power, the first shaft 16 rotates accordingly and bears torque. Sensors inside the torque measuring instrument 15, such as strain gauges and torque sensors, sense the minute deformation or force change of the first shaft 16 caused by torque, convert it into electrical signals or other measurable signals, and obtain accurate torque values ​​after signal processing and calculation, providing key data for ship shaft power calculation.

[0030] The rotational speed testing mechanism 6 consists of a rotational speed measuring instrument 11 and a second shaft 12. The rotational speed measuring instrument 11 is mounted on the upper side of the test bench 2, and the second shaft 12 is mounted on the front end of the rotational speed measuring instrument 11. The second shaft 12 is linked to the detection shaft 17 through the transmission mechanism 7. When the detection shaft 17 rotates, it drives the second shaft 12 to rotate synchronously. The rotational speed sensors inside the rotational speed measuring instrument 11, such as photoelectric sensors and magnetoelectric sensors, monitor the rotation of the second shaft 12 in real time and convert the rotational motion of the shaft into electrical pulse signals or other processable signals. By counting and calculating the signals, the rotational speed of the second shaft 12, that is, the rotational speed of the detection shaft 17, is accurately obtained, providing important parameters for the calculation of ship shaft power.

[0031] The power mechanism 8 consists of an electric motor 10 and a gearbox 9. Both the electric motor 10 and the gearbox 9 are mounted on the upper side of the test bench 2. One end of the gearbox 9 is mounted on the front end of the electric motor 10. After the electric motor 10 is energized, it converts electrical energy into mechanical energy to generate rotational power. The gearbox 9 adjusts the speed and torque output of the electric motor 10 according to the test requirements. Through gear transmission and other means, it transmits the power of the appropriate speed and torque to the test shaft 17 to simulate the operating power of the ship shaft system under different working conditions and provide a stable power source for the ship shaft power test.

[0032] The transmission mechanism 7 consists of a synchronous belt 14 and a synchronous pulley 13. The synchronous pulley 13 is installed on the upper side of the detection shaft 17, the second shaft 12, or the third shaft 18. The synchronous belt 14 is sleeved on the upper side of the synchronous pulley 13. The synchronous pulley 13 is installed on the detection shaft 17, the second shaft 12, or the third shaft 18. When one of the shafts rotates, the synchronous pulley 13 rotates accordingly. The synchronous belt 14 is sleeved on the synchronous pulley 13. By relying on the tooth meshing between the synchronous belt 14 and the synchronous pulley 13, power and motion are transmitted from one shaft to another, realizing the power transmission and motion coordination between the resistance adjustment mechanism 5, the speed testing mechanism 6, and the detection shaft 17. This ensures the accurate transmission of speed and torque between the components, enabling the entire testing device 1 to simulate the actual operating state of the ship's shafting system.

[0033] The leveling mechanism 3 consists of a threaded rod 21, a handle 20, a threaded cylinder 22, and a base plate 23. The threaded cylinder 22 is installed around the bottom of the test platform 2. The threaded rod 21 is rotatably installed inside the threaded cylinder 22. The handle 20 is installed on the upper side of the threaded rod 21. The base plate 23 is rotatably installed at the bottom of the threaded rod 21. When the test platform 2 tilts, the operator turns the handle 20, causing the threaded rod 21 to rotate inside the threaded cylinder 22. Due to the transmission action of the thread, the threaded rod 21 moves up and down axially, thereby causing the base plate 23 to rise and fall. By adjusting the threaded rods 21 at the four corners of the test platform 2, the height of the test platform 2 in various directions can be changed until the test platform 2 is in a horizontal state, ensuring that the test device 1 remains stable during the test, avoiding measurement errors caused by the tilt of the test platform 2, and ensuring the accuracy of the test data.

[0034] The working principle and usage process of this utility model are as follows: During the ship shaft power test, the test platform 2 serves as a basic support structure, providing a stable installation platform for other components. The power generated by the power mechanism 8 is transmitted through the detection shaft 17. During the transmission process, the torque measuring mechanism 4 can accurately capture the torque changes on the detection shaft 17. The speed testing mechanism 6 is linked with the detection shaft 17 through the transmission mechanism 7 to obtain speed data in real time. The resistance adjustment mechanism 5 applies different resistances to the detection shaft 17 through the transmission mechanism 7 to simulate the force conditions of the ship under various navigation states. The leveling mechanism 3 adjusts the position of the threaded rod 21 inside the threaded cylinder 22, thereby driving the base plate 23 to rise and fall, so that the test platform 2 is in a horizontal state, ensuring the accuracy and stability of the test.

[0035] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A marine shaft power testing device, the testing device (1); characterized by: The testing device (1) consists of a test bench (2), a power mechanism (8), a resistance adjustment mechanism (5), a torque measuring mechanism (4), and a speed testing mechanism (6). The power mechanism (8), the resistance adjustment mechanism (5), the torque measuring mechanism (4), and the speed testing mechanism (6) are all installed on the upper side of the test bench (2). A detection shaft (17) is installed at the front end of the power mechanism (8), and the other end of the detection shaft (17) is installed at the front end of the torque measuring mechanism (4). A transmission mechanism (7) is provided between the resistance adjustment mechanism (5), the speed testing mechanism (6), and the detection shaft (17). The transmission mechanism (7) is installed on both sides of one end of the detection shaft (17) and one end of the resistance adjustment mechanism (5) and the speed testing mechanism (6). A leveling mechanism (3) is installed around the bottom of the test bench (2).

2. A marine shaft power testing apparatus according to claim 1, characterised in that: The resistance adjustment mechanism (5) consists of a third shaft (18) and a resistance adjuster (19). The resistance adjuster (19) is installed on the upper side of the test bench (2), and the third shaft (18) is rotatably installed at the front end of the resistance adjuster (19).

3. A marine shaft power testing apparatus according to claim 2, characterised in that: The resistance regulator (19) consists of a mounting box (24), an electromagnetic push rod (25), and a friction plate (26). The mounting box (24) is installed on the upper side of the test bench (2). The electromagnetic push rod (25) is installed on both sides and the upper end of the mounting box (24). The friction plate (26) is installed at one end of the electromagnetic push rod (25). The friction plate (26) can be connected to the third shaft (18).

4. A marine shaft power testing apparatus as claimed in claim 1, wherein: The torque measuring mechanism (4) consists of a torque measuring instrument (15) and a first shaft (16). The torque measuring instrument (15) is installed on the upper side of the test bench (2). One end of the first shaft (16) is installed at the front end of the torque measuring instrument (15), and the other end of the first shaft (16) is installed at one end of the detection shaft (17).

5. A marine shaft power testing apparatus as claimed in claim 2, wherein: The speed testing mechanism (6) consists of a speed measuring instrument (11) and a second shaft (12). The speed measuring instrument (11) is installed on the upper side of the test bench (2), and the second shaft (12) is installed at the front end of the speed measuring instrument (11).

6. A marine shaft power testing apparatus as claimed in claim 1, wherein: The power mechanism (8) consists of an electric motor (10) and a transmission (9). Both the electric motor (10) and the transmission (9) are mounted on the upper side of the test bench (2). One end of the transmission (9) is mounted on the front end of the electric motor (10).

7. A marine shaft power testing apparatus as claimed in claim 5, wherein: The transmission mechanism (7) consists of a synchronous belt (14) and a synchronous pulley (13). The synchronous pulley (13) is installed on the upper side of the detection shaft (17), the second shaft (12) or the third shaft (18), and the synchronous belt (14) is sleeved on the upper side of the synchronous pulley (13).

8. A marine shaft power testing apparatus as claimed in claim 1, wherein: The leveling mechanism (3) consists of a threaded rod (21), a handle (20), a threaded cylinder (22), and a base plate (23). The threaded cylinder (22) is installed around the bottom of the test bench (2). The threaded rod (21) is rotatably installed inside the threaded cylinder (22). The handle (20) is installed on the upper side of the threaded rod (21). The base plate (23) is rotatably installed at the bottom of the threaded rod (21).

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