Strength testing device for marine plastic propeller

Abstract

A marine plastic propeller strength testing device comprises a testing table and is characterized in that a clamping assembly used for fixing a propeller is arranged on the testing table, a loading mechanism used for applying a load to the propeller is further arranged on the testing table, and the loading mechanism is located over the clamping assembly; the loading mechanism is provided with a test assembly used for detecting parameters of the propeller. The test assembly comprises a pressure sensor and a laser displacement sensor which are arranged at the output end of the loading mechanism; compared with the prior art, the propeller is fixed on the test board through the clamping assembly, vertical pressure is applied to the propeller through the loading mechanism, the load can be accurately controlled, continuous downward pressure is provided for the propeller, and then the complex stress environment under the actual working condition is simulated more truly; meanwhile, key parameters such as deformation quantity and compressive strength of the propeller are collected in real time through a pressure sensor and a laser displacement sensor, so that the objectivity and accuracy of the test are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to propeller detection equipment technical field, concretely relates to a marine plastic propeller strength testing device. BACKGROUND

[0002] As a key component of ship propulsion systems, the performance of propellers directly affects the sailing efficiency, safety, and reliability of ships. Marine propellers work in complex and variable marine environments for a long time, not only have to withstand huge thrust and torque, but also have to face the challenges of corrosion, wear and other environmental factors. Therefore, it is particularly important to test and evaluate the strength of marine propellers to ensure their safety and reliability in practical applications.

[0003] With the progress of material science and the improvement of environmental awareness, plastic materials are increasingly widely used in marine propellers due to their lightweight, corrosion-resistant, easy-to-process characteristics. Plastic propellers not only effectively reduce the weight of ships, reduce fuel consumption, but also reduce noise and vibration, and improve the comfort of riding. However, compared with traditional metal propellers, plastic propellers have certain challenges in strength, stiffness, and durability. Especially in complex and variable marine environments, plastic propellers need to withstand water flow impact, corrosion, wear and other multiple factors, and their strength and durability are directly related to the safety and reliability of ships.

[0004] Chinese patent with application number 202122731563.6 discloses an experimental testing device for air propeller ship model, the testing device disclosed above, including support mechanism and test mechanism, the test mechanism is located above the support mechanism; the test mechanism includes a support plate, the bottom of the support plate is provided with a fixed plate, the surface of the fixed plate is provided with a motor, the transmission end of the motor is provided with a fixed rod penetrating through the fixed plate, the outer wall of the fixed rod is provided with a first connecting rod, the first disc and the second disc are provided with symmetrically distributed helical rods on the side opposite to each other, two helical rods are located on the outer wall of two fixed columns, the bottom of the second disc is provided with a knocking hammer. Chinese patent with application number 201920292624.3 discloses a multifunctional detection platform for propeller production, the multifunctional detection platform disclosed above, including a fixed plate, a support and a fixed column, the support is located above the fixed plate, and a gravity sensor is installed between the support and the fixed plate, the support includes a support box, an electric push rod, a hydraulic cylinder and a pressure sensor.

[0005] The prior art disclosed above tests the strength of the propeller by driving the knocking hammer to hit the propeller, and observes the deformation of the propeller to test the strength of the propeller, however, only mechanical knocking is relied on to simulate the load, and it is difficult to accurately reproduce the state of the propeller under actual continuous pressure; at the same time, manual observation of deformation or timing is relied on to judge the durability, and lacks real-time and quantitative data acquisition means. Content of the utility model

[0006] The utility model discloses in order to overcome the defects in the prior art, provide a kind of to be able to realize to propeller exert continuous pressure, and improve the accuracy of test Marine plastic propeller strength testing device.

[0007] In order to realize the above-mentioned utility model purposes, the utility model adopts the following technical solutions: a kind of Marine plastic propeller strength testing device, including test table, characterized by, the test table is equipped with the clamping assembly for fixing propeller, test table is also equipped with the loading mechanism for propeller is applied load, loading mechanism is located above clamping assembly, loading mechanism is equipped with the test component for detecting propeller parameter;The test component includes the pressure sensor and laser displacement sensor of the output end of loading mechanism.

[0008] As a preferred scheme of the utility model, the clamping assembly includes a mounting table detachably disposed on the test table, the mounting table is provided with a mounting groove matched with the propeller, and a through hole for embedding the hub is arranged in the middle of the mounting groove.

[0009] As a preferred scheme of the utility model, the mounting table is covered with a protective cover with open ends.

[0010] As a preferred scheme of the utility model, the loading mechanism includes a support and a loading power component disposed on the support, and a loading component for pressing the propeller is arranged on the output shaft of the loading power component.

[0011] As a preferred scheme of the utility model, the loading power component drives the loading component to move towards the clamping assembly.

[0012] As a preferred scheme of the utility model, the pressure sensor is arranged at the bottom end of the loading component, and the pressure sensor abuts against the hub of the propeller.

[0013] As a preferred scheme of the utility model, the laser displacement sensor is arranged on the side surface of the loading component, and the laser displacement sensor is arranged downward.

[0014] As a preferred scheme of the utility model, the test table is provided with a control system electrically connected with the loading mechanism and the test component, and an emergency stop button is arranged on the control system.

[0015] As a preferred scheme of the utility model, the test bench bottom is further provided with a power supply for providing power for the loading mechanism, the test assembly and the control system.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] 1, the propeller is fixed on the test bench through the clamping assembly, vertical pressure is applied to the propeller through the loading mechanism, the load size can be accurately controlled, and the propeller is provided with sustained downward pressure, thereby more truly simulating the complex stress environment under actual working conditions, and through the pressure sensor and the laser displacement sensor, the deformation amount, the pressure intensity and other key parameters of the propeller are collected in real time, thereby the objectivity and accuracy of the test are significantly improved.

[0018] 2, further, the propeller is stably placed in the mounting groove of the mounting table, and the hub is accurately embedded in the through hole, so that the thread of the propeller is not moved during the test, and the detection data is accurate and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is the structure schematic view of the utility model;

[0020] Fig. 2 It is the front view of the utility model;

[0021] Fig. 3 It is the structure schematic view of the mounting groove of the utility model

[0022] Drawing reference: test bench 1, clamping assembly 2, mounting table 201, mounting groove 2011, through hole 2012, protective cover 202, loading mechanism 3, support 301, loading power part 302, loading part 303, test assembly 4, pressure sensor 401, laser displacement sensor 402, control system 5, emergency stop button 501, power supply 6. DETAILED DESCRIPTION

[0023] The utility model embodiment will be described in detail below with reference to the drawings.

[0024] As Figs. 1-3The utility model discloses a kind of marine plastic propeller strength testing devices, including test table 1, it is characterized in that, test table 1 is equipped with clamping assembly 2 for fixing propeller, test table 1 is further equipped with loading mechanism 3 for applying load to propeller, loading mechanism 3 is located directly above clamping assembly 2, loading mechanism 3 is equipped with test assembly 4 for detecting propeller parameter;Test assembly 4 includes pressure sensor 401 and laser displacement sensor 402 arranged at the output end of loading mechanism 3.

[0025] Further, loading mechanism 3 is arranged above clamping assembly 2, propeller is arranged on clamping assembly 2, continuous load is applied to propeller by loading mechanism 3, and deformation amount, pressure strength and other key parameters of propeller are collected in real time by pressure sensor 401 and laser displacement sensor 402, so as to significantly improve the objectivity and accuracy of test.

[0026] Clamping assembly 2 includes mounting table 201 detachably arranged on test table 1, mounting table 201 is equipped with mounting groove 2011 matched with propeller, through hole 2012 embedded hub is arranged in the middle of mounting groove 2011, further, mounting table 201 is fixed on test table 1 by bolt, mounting groove 2011 is arranged on the upper surface of mounting table 201, through hole 2012 is located in the middle of mounting groove 2011, and through hole 2012 is arranged along the height direction of mounting table 201, mounting groove 2011 is used for accommodating propeller blade, and hub is embedded in through hole 2012;At the same time, mounting groove 2011 on each mounting table 201 corresponds to propeller of the same specification shape, when propeller of different specifications is tested, mounting table 201 corresponding to mounting groove 2011 can be replaced, so as to ensure the wide applicability and high accuracy of test results, and effectively reduce the test error range.

[0027] Mounting table 201 is covered with protective cover 202 arranged with open ends, further, protective cover 202 is covered on mounting table 201 to ensure safety during testing, to prevent propeller fragments from splashing or loading mechanism 3 from losing control and other accidents, protective cover 202 is a hollow structure with open ends, loading mechanism 3 enters protective cover 202 from the top opening of protective cover 202 and acts on propeller to load propeller.

[0028] The loading mechanism 3 comprises a support 301 and a loading power component 302 arranged on the support 301, an output shaft of the loading power component 302 is provided with a loading component 303 for pressing the propeller, further, the support 301 is arranged on the test table 1, the loading power component 302 is fixedly installed on the support 301, the output shaft of the loading power component 302 moves towards the downward direction, the loading component 303 is installed at the end of the output shaft, the loading power component 302 drives the loading component 303 to move towards the direction of the clamping assembly 2, the loading component 303 is driven by the loading power component 302 to move towards the propeller, and the loading component 303 acts on the propeller and applies a continuous load to the propeller; the loading power component 302 can use a motor or an electric cylinder and other driving devices that can realize accurate control, the lower surface of the loading component 303 is a plane structure, and the loading component 303 is arranged in a block structure, so that when the loading component 303 acts on the propeller, the propeller is uniformly stressed, and the accuracy of the test result is ensured.

[0029] The pressure sensor 401 is arranged at the bottom end of the loading component 303 and abuts against the hub of the propeller, further, the pressure sensor 401 is arranged on the lower surface of the loading component 303, and the pressure sensor 401 is driven by the loading component 303 to move downwards, when the pressure sensor 401 acts on the hub of the propeller, the load borne by the propeller is started to be recorded.

[0030] In addition, the laser displacement sensor 402 is arranged on the side surface of the loading component 303, and the laser displacement sensor 402 is arranged towards the downward direction, when the pressure sensor 401 contacts the propeller to be tested to generate force, the laser displacement sensor 402 starts to work, so as to monitor the deformation and load of the propeller in real time.

[0031] The test table 1 is provided with a control system 5 electrically connected with the loading mechanism 3 and the test assembly 4, the control system 5 is provided with an emergency stop button 501, further, the loading mechanism 3 is controlled to operate through the control system 5, and the data monitored by the pressure sensor 401 and the laser displacement sensor 402 of the test assembly 4 is transmitted to the control system 5 for analysis and processing, so as to ensure the accuracy of the test result; when an accident occurs in the test process, the test process can be stopped in emergency by pressing the emergency stop button 501, so as to avoid danger.

[0032] The test table 1 is further provided with a power supply 6 for providing power for the loading mechanism 3, the test assembly 4 and the control system 5, and the power supply 6 is used for realizing power supply of the device.

[0033] Test principle:

[0034] 1, the propeller is fixed by the clamping assembly 2, and a predetermined load is applied to the propeller by the loading mechanism 3.

[0035] 2、When the pressure sensor 401 contacts the propeller to be tested, the laser displacement sensor 402 starts working;

[0036] 3、During the test, the test assembly 4 monitors the deformation and load of the propeller in real time and transmits the data to the control system 5 for analysis and processing.

[0037] 4、The control system 5 automatically adjusts the loading rate and data acquisition frequency according to the preset test conditions and parameter range to ensure the accuracy and reliability of the test.

[0038] 5、When the loading mechanism 3 reaches the preset value, the control system 5 automatically cuts off the power supply of the loading mechanism 3, and the loading mechanism 3 stops working.

[0039] Specific operation method:

[0040] Place the propeller in the installation slot 2011 of the installation table 201; the installation slot 2011 is completely attached to the propeller blade;

[0041] Next, cover the protective cover 202 on the installation table 201;

[0042] Next, turn on the power 6 switch, and the control system 5 is turned on;

[0043] Next, check if the equipment operation and safety device are normal;

[0044] Next, set the preset pressure value and click the start button;

[0045] Next, after the control system 5 receives the signal, it will execute the command to the loading power 302, and the loading power 302 starts working to drive the loading piece 303 to move;

[0046] Next, when the pressure sensor 401 at the bottom of the loading piece 303 contacts the propeller to be tested, the control system 5 will execute the command to the laser displacement sensor 402, and the laser displacement sensor 402 starts working to record the deformation, and the control system 5 screen displays the start time, pressure, deformation, etc. Information;

[0047] Next, when the pressure sensor 401 reaches the preset value, the control system 5 will power off the loading power 302, and the deformation at this time is the deformation of the propeller working in water.

[0048] Next, start the reset button, and the control system 5 will execute the reset command to the loading power 302 for zero reset.

[0049] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0050] Although the terms: test bench 1, clamping assembly 2, mounting table 201, mounting groove 2011, through hole 2012, protective cover 202, loading mechanism 3, support 301, loading power 302, loading piece 303, test assembly 4, pressure sensor 401, laser displacement sensor 402, control system 5, emergency stop button 501, power supply 6, etc. are used more frequently in the drawings, the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the application; any additional limitation is contrary to the spirit of the application.

Claims

1. A marine plastic propeller strength testing device comprising a testing table (1), characterized in that, The test bench (1) is provided with a clamping assembly (2) for fixing the propeller, and the test bench (1) is also provided with a loading mechanism (3) for applying load to the propeller, the loading mechanism (3) is located directly above the clamping assembly (2), and the loading mechanism (3) is provided with a test assembly (4) for detecting propeller parameters; the test assembly (4) comprises a pressure sensor (401) and a laser displacement sensor (402) arranged at the output end of the loading mechanism (3).

2. A marine plastic propeller strength testing device according to claim 1, characterized in that, The clamping assembly (2) comprises a mounting table (201) detachably arranged on the test bench (1), and the mounting table (201) is provided with a mounting groove (2011) matched with the propeller, and a through hole (2012) for embedding the propeller hub is arranged in the middle of the mounting groove (2011).

3. A marine plastic propeller strength testing device according to claim 2, wherein, The mounting table (201) is covered with a protective cover (202) with open ends.

4. A marine plastic propeller strength testing device as claimed in claim 1, wherein, The loading mechanism (3) comprises a support (301) and a loading power element (302) arranged on the support (301), and the output shaft of the loading power element (302) is provided with a loading element (303) for pressing the propeller.

5. A marine plastic propeller strength testing device according to claim 4, wherein, The loading power element (302) drives the loading element (303) to move towards the clamping assembly (2).

6. A marine plastic propeller strength testing device as claimed in claim 4, wherein, The pressure sensor (401) is arranged at the bottom end of the loading element (303), and the pressure sensor (401) abuts against the propeller hub.

7. A marine plastic propeller strength testing device as claimed in claim 4, wherein, The laser displacement sensor (402) is arranged on the side of the loading element (303), and the laser displacement sensor (402) is arranged downward.

8. A marine plastic propeller strength testing device as claimed in claim 1, wherein, The test bench (1) is provided with a control system (5) electrically connected with the loading mechanism (3) and the test assembly (4), and the control system (5) is provided with an emergency stop button (501).

9. A marine plastic propeller strength testing device as claimed in claim 1, wherein, The test bench (1) is also provided with a power supply (6) for providing power for the loading mechanism (3), the test assembly (4) and the control system (5).

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