Endurance test device for hoisting mechanism of outboard motor

Abstract

A durability testing device for a hoisting mechanism of an outboard motor comprises a testing platform and a loading mechanism which is arranged on the testing platform and used for testing the durability of the hoisting mechanism, and the loading mechanism comprises a support, a lifting part installed on the support and a loading part connected between the lifting part and the support. The loading part is configured to apply a variable load to the hoisting mechanism, and the lifting part is configured to transmit the load to the hoisting mechanism; compared with the prior art, long-time stable and reliable load is provided for the hoisting mechanism, so that the hoisting mechanism continuously operates under the rated load, and meanwhile, the loading part can accurately adjust the load, so that the load of the hoisting mechanism is changed, the load change is fed back under the action of the pressure sensor, and the hoisting mechanism can continuously operate under the rated load. Therefore, the actual working conditions of the hoisting mechanism of the outboard motor can be simulated, the test effect of the hoisting mechanism under the rated load for a long time or high frequency is improved, and the accuracy of the test effect is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of ships, and particularly relates to a durability test device for an outboard motor lifting mechanism. Background Art

[0002] An outboard motor is a propulsion device installed on the outside of the rear of a ship, providing power for small ships. The outboard motor mainly includes an engine, a transmission system, a lifting mechanism, a propeller, and a control system, etc. The lifting mechanism of the outboard motor is the core component that controls the tilt angle and lifting of the outboard motor in the water, and is mainly used to adjust the water depth of the propeller, adapt to different water environments, and optimize the performance of the ship during navigation.

[0003] The flexibility of the telescopic movement, the positioning accuracy, the use safety, and the service life of the lifting mechanism have always been important indicators for manufacturing a qualified lifting mechanism; in order to ensure the production quality of the lifting mechanism, safety inspections such as jog control tests, lifting force tests, and durability tests are generally carried out on the lifting mechanism. These tests are all static tests on the cylinder body of the lifting mechanism. For example, the durability test is to inspect the stability of the lifting mechanism after multiple telescopic movements over a long period of time.

[0004] To solve the above problems, Chinese Patent No. 202222111476.5 discloses a dynamic test device for a tilter. The disclosed test device includes a vertical support member, a tilter, an outboard motor simulation body, and a shaking simulation mechanism; the top end of the vertical support member is correspondingly hinged to the top end of the outboard motor simulation body, a tension and compression sensor is installed in the middle of the outboard motor simulation body, a connecting seat is fixed on the sensing surface of the tension and compression sensor, and both ends of the tilter are correspondingly hinged to the middle of the vertical support member and the connecting seat respectively; the shaking simulation mechanism is used to drive the vertical support member to simulate the water surface surging state of the boat. Chinese Patent No. 202420807763.6 discloses a durability test device for an outboard motor operation handle. The disclosed durability test device includes: a support table; a handle bracket connected to the support table, the handle bracket is used to install the tested handle and make the grip of the tested handle protrude from the handle bracket; a power support frame connected to the support table; a driving component connected to the power support frame, and the driving component is detachably connected to the grip of the tested handle, the driving component is used to drive the grip of the tested handle to rotate; a detection component connected to the power support frame and the driving component, and is used to detect the number of rotations of the tested handle.

[0005] In the above - disclosed prior art, the lifting mechanism is fixed by a support member, and an outboard engine simulation body is arranged on the lifting mechanism to simulate the weight of an outboard engine. At the same time, a shaking simulation mechanism is used to simulate the water surface surging state of a boat in the actual use environment, so as to realize the test work of the lifting mechanism. However, in the process of testing the lifting mechanism in the above - mentioned scheme, the load borne by the lifting mechanism is fixed, and under the shaking of the shaking simulation mechanism, the change range of the load borne by the lifting mechanism is small and the size of the load cannot be accurately controlled, so the durability of the lifting mechanism cannot be truly tested. Summary of the Invention

[0006] The present invention is to overcome the defects in the above - mentioned prior art, and provides a durability test device for an outboard engine lifting mechanism that can adjust the load size and improve the test accuracy and test efficiency of the lifting mechanism.

[0007] To achieve the above - mentioned invention purpose, the present invention adopts the following technical solutions: A durability test device for an outboard engine lifting mechanism includes a test platform and a loading mechanism arranged on the test platform for testing the durability of the lifting mechanism. The loading mechanism includes a bracket, a lifting part installed on the bracket, and a loading part connected between the lifting part and the bracket. The loading part is configured to apply a variable load to the lifting mechanism, and the lifting part is configured to transfer the load to the lifting mechanism; a pressure sensor for feedbacking the load size is arranged on the lifting part.

[0008] As a preferred solution of the present invention, the loading part includes a first electromagnet and a second electromagnet that are spaced apart and have mutually repulsive magnetic poles. The first electromagnet is arranged at the top of the bracket, and the second electromagnet is arranged on the lifting part and synchronously lifts with the lifting part.

[0009] As a preferred solution of the present invention, the lifting part is slidably connected to the bracket, the lifting mechanism is connected to the lifting part, and the lifting mechanism is located below the lifting part.

[0010] As a preferred solution of the present invention, the lifting part includes a lifting plate and connection blocks arranged at opposite ends of the lifting plate. Connection shafts for slidably connecting with the bracket are arranged on the connection blocks.

[0011] As a preferred solution of the present invention, the bracket includes a top plate and support plates arranged at both ends of the top plate. The support plates are arranged on the test platform, and sliding grooves are arranged on the support plates along the height direction of the support plates. The connection shafts are slidably connected in the sliding grooves.

[0012] As a preferred solution of the present invention, the first electromagnet is arranged on the lower surface of the top plate, the second electromagnet is arranged on the lifting plate, and the second electromagnet is located directly below the first electromagnet.

[0013] As a preferred embodiment of the present invention, lifting columns are provided at the bottom of the lifting plate, and the lifting columns are located at opposite ends of the lifting plate. A base for guiding the lifting of the lifting columns is provided on the test platform.

[0014] As a preferred embodiment of the present invention, guiding portions are provided on both sides of the base, guiding holes are provided on the guiding portions along the height direction of the base, and the lifting columns are slidably connected in the guiding holes.

[0015] As a preferred embodiment of the present invention, a hinge seat for connecting the lifting mechanism is provided at the bottom of the lifting plate, and the pressure sensor is disposed between the hinge seat and the lifting plate.

[0016] As a preferred embodiment of the present invention, a plurality of installation grooves are provided on the test platform along the length direction of the test platform. The loading mechanism and the lifting mechanism are both connected in the installation grooves, and a power supply for power supply is further provided on the test platform.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The lifting part is installed on the bracket, the loading part is arranged between the lifting part and the bracket, the load is applied through the loading part, and the load is transmitted to the lifting mechanism through the lifting part, so as to provide a long-term stable and reliable load for the lifting mechanism, enabling the lifting mechanism to continuously operate under the rated load. At the same time, the loading part can accurately adjust the load size, thereby changing the load size of the lifting mechanism. Under the action of the pressure sensor, the load change is feedback, and thus the actual working conditions of the outboard engine lifting mechanism can be simulated, improving the test effect of the lifting mechanism under long-term or high-frequency rated load and ensuring the accuracy of the test effect. 2. Further, through the first electromagnet and the second electromagnet arranged at intervals and with opposite magnetic poles repelling each other, a stable load is provided for the lifting mechanism. At the same time, the second electromagnet is arranged on the lifting part and lifts simultaneously with the lifting part. As the second electromagnet moves, the distance between the first electromagnet and the second electromagnet increases, resulting in a decrease in the repulsive force, thereby reducing the load borne by the lifting mechanism, and thus realizing the change of the load size of the lifting mechanism. Moreover, the size of the changed load is controllable. By increasing or decreasing the current of the first electromagnet and the second electromagnet, the accurate control of the load can be realized, ensuring the test effect on the lifting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is the front view of the present invention; Figure 3 is the sectional view of the present invention Reference numerals: test platform 1, mounting groove 101, lifting mechanism 2, loading mechanism 3, bracket 301, top plate 3011, support plate 3012, chute 3013, lifting part 302, lifting plate 3021, connecting block 3022, connecting shaft 3023, lifting column 3024, loading part 303, first electromagnet 3031, second electromagnet 3032, pressure sensor 304, base 305, guiding part 3051, guiding hole 3052, hinge seat 306, power supply 4. Detailed implementation manners

[0019] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] As Figures 1-3 shown, a durability test device for an outboard motor lifting mechanism includes a test platform 1 and a loading mechanism 3 disposed on the test platform 1 for testing the durability of the lifting mechanism 2. The loading mechanism 3 includes a bracket 301, a lifting part 302 mounted on the bracket 301, and a loading part 303 connected between the lifting part 302 and the bracket 301. The loading part 303 is configured to apply a variable load to the lifting mechanism 2, and the lifting part 302 is configured to transfer the load to the lifting mechanism 2; a pressure sensor 304 for feedbacking the load magnitude is provided on the lifting part 302.

[0021] Further, the test platform 1 is placed horizontally, the lifting mechanism 2 is placed on the test platform 1, the bracket 301 is fixedly installed on the test platform 1, the lifting part 302 is installed on the bracket 301, and the lifting part 302 can move up and down on the bracket 301. The loading part 303 is between the bracket 301 and the lifting part 302. A load is applied through the loading part 303, and the load is transferred to the lifting mechanism 2 through the lifting part 302, so as to simulate the load borne by the lifting mechanism 2 in the actual working environment. Through the load provided by the loading part 303, a long-term stable and reliable load is provided to the lifting mechanism 2, so that the lifting mechanism 2 continuously operates under the rated load. At the same time, the loading part 303 can accurately adjust the load magnitude, thereby changing the load magnitude of the lifting mechanism 2. Under the action of the pressure sensor 304, the load change is feedbacked, and thus the actual working conditions of the lifting mechanism 2 of the outboard motor can be simulated, the test effect of the lifting mechanism 2 under the rated load for a long time or at high frequency is improved, and the accuracy of the test effect is ensured.

[0022] Further, as a load providing device, the loading part 303 can use a cylinder, an electric push rod, a hydraulic cylinder, etc. as a load output unit. However, since the load magnitudes provided by the cylinder, the electric push rod, and the hydraulic cylinder are certain and the load magnitude cannot be adjusted, preferably, an electromagnet is used as the load output unit, and the load magnitude is adjusted by changing the magnitude of the current.

[0023] Specifically, the loading unit 303 includes a first electromagnet 3031 and a second electromagnet 3032 that are spaced apart and have repulsive magnetic poles. The first electromagnet 3031 is disposed at the top of the bracket 301, and the second electromagnet 3032 is disposed on the lifting unit 302 and lifts and lowers synchronously with the lifting unit 302. Further, the current directions of the first electromagnet 3031 and the second electromagnet 3032 are opposite, and the same magnetic poles of the first electromagnet 3031 and the second electromagnet 3032 are placed opposite to each other, that is, N pole to N pole, or S pole to S pole. A certain distance is provided between the first electromagnet 3031 and the second electromagnet 3032; the lifting unit 302 is slidably connected to the bracket 301, the lifting mechanism 2 is connected to the lifting unit 302, and the lifting mechanism 2 is located below the lifting unit 302. The lifting unit 302 can slide on the bracket 301 along the height direction of the bracket 301; when the first electromagnet 3031 and the second electromagnet 3032 are energized, the two electromagnets repel each other, so that the second electromagnet 3032 and the lifting unit 302 synchronously descend, and then the load is applied to the lifting mechanism 2; by the first electromagnet and the second electromagnet that are spaced apart and have repulsive magnetic poles, a stable load is provided for the lifting mechanism. At the same time, the second electromagnet is disposed on the lifting unit and lifts and lowers simultaneously with the lifting unit. As the second electromagnet moves, the distance between the first electromagnet and the second electromagnet increases and the repulsive force decreases, so that the load borne by the lifting mechanism decreases, and thus the load size of the lifting mechanism is changed, and the size of the changed load is controllable. By increasing or decreasing the current of the first electromagnet and the second electromagnet, the load can be accurately controlled, ensuring the test effect on the lifting mechanism.

[0024] The lifting unit 302 includes a lifting plate 3021 and connecting blocks 3022 disposed at opposite ends of the lifting plate 3021. The connecting blocks 3022 are provided with connecting shafts 3023 that are slidably connected to the bracket 301. Further, the lifting plate 3021 is horizontally disposed, the connecting blocks 3022 are located at opposite ends of the lifting plate 3021, the connecting shafts 3023 are disposed along the length direction of the lifting plate 3021, and the connecting shafts 3023 are slidably connected to the bracket 301. The connection between the lifting plate 3021 and the bracket 301 is realized through the connecting shafts 3023.

[0025] The bracket 301 includes a top plate 3011 and support plates 3012 provided at both ends of the top plate 3011. The support plates 3012 are arranged on the test platform 1. A chute 3013 is provided on the support plates 3012 along the height direction of the support plates 3012. The connecting shaft 3023 is slidably connected in the chute 3013. Further, the top plate 3011 is horizontally arranged. There are two support plates 3012, and the two support plates 3012 are respectively arranged at opposite ends of the top plate 3011. The support plates 3012 are vertically arranged with respect to the top plate 3011. The two support plates 3012 are fixedly connected to the test platform 1, and the support plates 3012 are perpendicularly connected to the test platform 1. A chute 3013 is provided on the support plates 3012, and the chute 3013 is arranged along the height direction of the support plates 3012. At the same time, the connecting shafts 3023 at both ends of the lifting plate 3021 are slidably connected in the corresponding chutes 3013, thereby realizing the lifting function of the lifting plate 3021.

[0026] The first electromagnet 3031 is arranged on the lower surface of the top plate 3011, and the second electromagnet 3032 is arranged on the lifting plate 3021, and the second electromagnet 3032 is located directly below the first electromagnet 3031. Further, a mounting hole is provided in the middle of the top plate 3011. The bolt fixes and installs the first electromagnet 3031 on the top plate 3011 through the mounting hole, and the first electromagnet 3031 is installed on the lower surface of the top plate 3011. The second electromagnet 3032 is also installed on the upper surface in the middle of the lifting plate 3021. The first electromagnet 3031 and the second electromagnet 3032 are arranged oppositely, and the first electromagnet 3031 is directly opposite the second electromagnet 3032, so as to ensure that the repulsive force between the two electromagnets is in the maximum state.

[0027] Lifting columns 3024 are provided at the bottom of the lifting plate 3021. The lifting columns 3024 are located at opposite ends of the lifting plate 3021. A base 305 for guiding the lifting of the lifting columns 3024 is provided on the test platform 1. Further, there are two lifting columns 3024. The two lifting columns 3024 are respectively arranged on the lower surfaces at opposite ends of the lifting plate 3021, and the lifting columns 3024 are vertically arranged on the lifting plate 3021. In addition, the base 305 is fixedly installed on the test platform 1, and the lifting columns 3024 are connected to the base 305, and the lifting of the lifting columns 3024 is guided through the base 305.

[0028] Specifically, guiding parts 3051 are provided on both sides of the base 305. Guiding holes 3052 are provided on the guiding parts 3051 and are arranged along the height direction of the base 305. The lifting columns 3024 are slidably connected in the guiding holes 3052. Further, the guiding parts 3051 are located on both sides of the base 305. Guiding holes 3052 are arranged in the guiding parts 3051. The guiding holes are arranged along the height direction of the guiding parts 3051, and the tops of the guiding holes 3052 are open. The two lifting columns 3024 are slidably arranged in the corresponding guiding holes 3052. The lifting of the lifting columns 3024 is guided through the guiding holes 3052, so as to ensure that the lifting plate 3021 always remains horizontal during the lifting process, avoiding the situation that one end of the lifting plate 3021 is high and the other end is low, so as to ensure that the load applied by the loading part 303 can all act on the lifting mechanism 2, and further ensure the accuracy of the load detection of the lifting mechanism 2.

[0029] An articulated seat 306 for connecting the lifting mechanism 2 is provided at the bottom of the lifting plate 3021. The pressure sensor 304 is arranged between the articulated seat 306 and the lifting plate 3021. Further, the articulated seat 306 is fixed in the middle of the lifting plate 3021. The output shaft of the lifting mechanism 2 is articulated on the articulated seat 306. The pressure sensor 304 is arranged on the lower surface of the lifting plate 3021, that is, the pressure sensor 304 is located between the lifting plate 3021 and the articulated seat 306, so as to ensure the accuracy of the load detection of the lifting mechanism 2 by the pressure sensor 304.

[0030] A plurality of mounting grooves 101 arranged along the length direction of the test platform 1 are provided on the test platform 1. Both the loading mechanism 3 and the lifting mechanism 2 are connected in the mounting grooves 101. A power supply 4 for power supply is also provided on the test platform 1. Further, the support plate 3012 and the base 305 of the loading mechanism 3 are installed in the mounting grooves 101 by bolts. At the same time, the lifting mechanism 2 is also fixed in the mounting grooves 101, ensuring that both the loading mechanism 3 and the lifting mechanism 2 remain stable during the test, and further ensuring the accuracy of the test results.

[0031] In addition, the power supply 4 is also arranged on the test platform 1. The power supply 4 is electrically connected to the first electromagnet 3031, the second electromagnet 3032, the pressure sensor 304 and the lifting mechanism 4 respectively, and the first electromagnet 3031, the second electromagnet 3032, the pressure sensor 304 and the lifting mechanism 4 are powered by the power supply 4.

[0032] When the power supply 4 is started, the first electromagnet 3031 and the second electromagnet 3032 are energized to provide a stable load for the lifting mechanism 2. The lifting mechanism 2 operates continuously under the rated load. The pressure sensor 304 feeds back the load change, which can simulate the actual working conditions of the lifting mechanism of the outboard engine, and the performance of the lifting mechanism 2 under long-term or high-frequency use of the rated load can be detected.

[0033] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

[0034] Although the terms such as test platform 1, installation groove 101, lifting mechanism 2, loading mechanism 3, bracket 301, top plate 3011, support plate 3012, chute 3013, lifting part 302, lifting plate 3021, connecting block 3022, connecting shaft 3023, lifting column 3024, loading part 303, first electromagnet 3031, second electromagnet 3032, pressure sensor 304, base 305, guiding part 3051, guiding hole 3052, hinge seat 306, power supply 4 and the like are used more frequently herein, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of the present invention; any interpretation of them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A durability test device for an outboard motor lifting mechanism, characterized in that: The invention comprises a test platform (1) and a loading mechanism (3) arranged on the test platform (1) for testing the durability of a lifting mechanism (2); the loading mechanism (3) comprises a bracket (301), a lifting part (302) installed on the bracket (301), and a loading part (303) connected between the lifting part (302) and the bracket (301); the loading part (303) is configured to apply a variable load to the lifting mechanism (2); the lifting part (302) is configured to transfer the load to the lifting mechanism (2); and a pressure sensor (304) for feeding back the load size is provided on the lifting part (302).

2. The outboard motor hoisting mechanism durability testing device according to claim 1, characterized in that: The loading part (303) comprises a first electromagnet (3031) and a second electromagnet (3032) which are arranged at intervals and have magnetic poles that repel each other. The first electromagnet (3031) is arranged on the top of the bracket (301), and the second electromagnet (3032) is arranged on the lifting part (302) and rises and falls synchronously with the lifting part (302).

3. The outboard motor hoisting mechanism durability testing device according to claim 1, characterized in that: The lifting part (302) is slidably connected to the bracket (301), the lifting mechanism (2) is connected to the lifting part (302), and the lifting mechanism (2) is located below the lifting part (302).

4. The outboard motor hoisting mechanism durability testing device according to claim 2, characterized in that: The lifting part (302) comprises a lifting plate (3021) and connecting blocks (3022) arranged at opposite ends of the lifting plate (3021), and the connecting blocks (3022) are provided with connecting shafts (3023) slidably connected to the bracket (301).

5. The outboard motor hoisting mechanism durability testing device according to claim 4, characterized in that: The bracket (301) comprises a top plate (3011) and support plates (3012) arranged at both ends of the top plate (3011); the support plate (3012) is arranged on the test platform (1); a slide groove (3013) is arranged along the height direction of the support plate (3012); and a connecting shaft (3023) is slidably connected in the slide groove (3013).

6. The outboard motor hoisting mechanism durability testing device according to claim 5, characterized in that: The first electromagnet (3031) is arranged on the lower surface of the top plate (3011), the second electromagnet (3032) is arranged on the lifting plate (3021), and the second electromagnet (3032) is located directly below the first electromagnet (3031).

7. The outboard motor hoisting mechanism durability testing device according to claim 4, characterized in that: The bottom of the lifting plate (3021) is provided with lifting columns (3024), the lifting columns (3024) are located at two opposite ends of the lifting plate (3021), and the test platform (1) is provided with a base (305) for guiding the lifting columns (3024) to move upward and downward.

8. The outboard motor hoisting mechanism durability testing device according to claim 7, characterized in that: The base (305) is provided with guide parts (3051) on both sides, and the guide parts (3051) are provided with guide holes (3052) arranged along the height direction of the base (305), and the lifting columns (3024) are slidably connected in the guide holes (3052).

9. The outboard motor hoisting mechanism durability testing device according to claim 4, characterized in that: A hinge seat (306) for connecting to a lifting mechanism (2) is provided at the bottom of the lifting plate (3021), and a pressure sensor (304) is arranged between the hinge seat (306) and the lifting plate (3021).

10. The outboard motor hoisting mechanism durability testing device according to claim 1, characterized in that: The test platform (1) is provided with a plurality of installation grooves (101) arranged along the length direction of the test platform (1), the loading mechanism (3) and the lifting mechanism (2) are both connected to the installation grooves (101), and the test platform (1) is also provided with a power supply (4) for power supply.

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