Dynamic load testing method for amphibious carrying equipment
By installing strain gauges and accelerometers at different locations on the transport equipment and combining them with a dynamic signal testing and analysis system, the problem of obtaining dynamic load data during the transport equipment's movement was solved, enabling comprehensive acquisition and analysis of dynamic loads.
Patent Information
- Application Number
- CN202511377497.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-25
- Publication Date
- 2025-12-16
AI Technical Summary
Existing technologies are insufficient for effectively testing and acquiring dynamic load data of transport equipment during movement, especially dynamic load changes in amphibious states.
Strain gauges and accelerometers are installed at the front, middle and rear of the transport equipment. The signals at each location are analyzed by a dynamic signal testing and analysis system. Tests are conducted under both land and water navigation conditions. The comprehensiveness of the data is improved by using multiple grids and accelerometers set in different directions.
It enables comprehensive collection and analysis of dynamic load data of transport equipment during its movement, improving the accuracy and comprehensiveness of the test.
Smart Images
Figure CN121141199A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of dynamic load testing technology, specifically to a dynamic load testing method for amphibious transport equipment. Background Technology
[0002] When the transport equipment is stationary, it only bears gravity (static load). However, once it starts moving, it will bear dynamic loads from uneven road surfaces, acceleration, braking, turning, wind loads, etc. The magnitude and frequency of these dynamic loads are often several times or even tens of times greater than the static loads. Therefore, it is necessary to test the dynamic load data of the transport equipment. Summary of the Invention
[0003] According to one aspect of this application, a dynamic load testing method for amphibious transport equipment is provided. Strain gauges and accelerometers are installed at the front, middle and rear of the amphibious transport equipment. Tests are conducted in three non-overlapping speed ranges under two driving conditions: land driving and water driving. The signals from the strain gauges and accelerometers at each location are analyzed by a dynamic signal testing and analysis system to achieve dynamic load testing of the amphibious transport equipment.
[0004] Each strain gauge includes multiple grid wires (typically three), with the extension directions of two adjacent grid wires arranged at an angle.
[0005] The included angle is 10~60°;
[0006] Each of the grid wires is used to lead out a strain acquisition channel, and each strain acquisition channel is independently electrically connected to the dynamic signal test and analysis system.
[0007] With the above settings, the grid wires on the strain gauge can collect strain data in different directions, thereby improving the comprehensiveness of the strain gauge data.
[0008] The accelerometers are arranged in pairs, and the acquisition directions of the accelerometers in the same pair are perpendicular to each other.
[0009] With the above settings, two accelerometers located at the same position have different acquisition directions, allowing for the measurement of acceleration in different directions at that position, thereby improving the comprehensiveness of the accelerometer data.
[0010] The amphibious transport vehicle is equipped with at least two strain gauges at the front, middle and rear of each section.
[0011] The amphibious transport equipment is equipped with at least one set of accelerometers at both the front and rear.
[0012] The land driving test items include maximum speed test, acceleration characteristic test, minimum stable speed test, braking performance test, steering performance test, coasting test, longitudinal slope and side slope passing performance test, and night driving test.
[0013] The tests for surface navigation include static parameters on water, exit angle and entry angle tests, maximum speed determination, water turning performance tests, and heading stability tests.
[0014] The advantages of this application are:
[0015] This application provides an amphibious dynamic load testing system for transport equipment, designed to acquire dynamic load data of the transport equipment during movement. The system includes multiple strain gauges installed inside the forward bottom deck, the intermediate bottom deck, and the rear cover plate at the jet pump location, respectively. Multiple accelerometers are installed on the forward bottom deck and the rear cover plate at the jet pump location, respectively. A dynamic signal testing and analysis system is electrically connected to the strain gauges and accelerometers, receiving and analyzing the signals collected by these instruments. By installing multiple strain gauges and accelerometers at different locations on the transport equipment, data on the transport equipment during movement is collected and transmitted to the dynamic signal testing and analysis system. The dynamic load data of the transport equipment during movement is obtained by analyzing the signals collected by the strain gauges and accelerometers. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in some embodiments of this application will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this application.
[0017] Figure 1 This is a structural schematic diagram of the transport equipment;
[0018] Figure 2 This is a schematic diagram of the bottom structure of the transport equipment;
[0019] Figure 3 Axonometric drawing of the transport equipment;
[0020] Figure 4 This is a flowchart illustrating the amphibious dynamic load testing method for transport equipment.
[0021] Explanation of reference numerals in the attached drawings: 100, transport equipment; 10, front bottom deck; 20, middle bottom deck; 30, rear cover plate for the spray pump location. Detailed Implementation
[0022] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.
[0023] Example 1
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0025] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.
[0026] Furthermore, in the embodiments of this application, directional terms such as "up," "down," "left," "right," "horizontal," and "vertical" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.
[0027] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.
[0028] It should be noted that, in the description of the embodiments of this application, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection or an integral connection; they can also refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.
[0029] A dynamic load testing method for amphibious transport equipment involves installing strain gauges and accelerometers at the front, middle, and rear of the amphibious transport equipment. Tests are conducted in three non-overlapping speed ranges under both land and water travel conditions. The signals from the strain gauges and accelerometers at each location are analyzed using a dynamic signal testing and analysis system to achieve dynamic load testing of the amphibious transport equipment.
[0030] Each strain gauge includes multiple grid wires (typically three), with the extension directions of two adjacent grid wires arranged at an angle.
[0031] The included angle is 10~60°;
[0032] Each of the grid wires is used to lead out a strain acquisition channel, and each strain acquisition channel is independently electrically connected to the dynamic signal test and analysis system.
[0033] With the above settings, the grid wires on the strain gauge can collect strain data in different directions, thereby improving the comprehensiveness of the strain gauge data.
[0034] The accelerometers are arranged in pairs, and the acquisition directions of the accelerometers in the same pair are perpendicular to each other.
[0035] With the above settings, two accelerometers located at the same position have different acquisition directions, allowing for the measurement of acceleration in different directions at that position, thereby improving the comprehensiveness of the accelerometer data.
[0036] The amphibious transport vehicle is equipped with at least two strain gauges at the front, middle and rear of each section.
[0037] The amphibious transport equipment is equipped with at least one set of accelerometers at both the front and rear.
[0038] The land driving test items include maximum speed test, acceleration characteristic test, minimum stable speed test, braking performance test, steering performance test, coasting test, longitudinal slope and side slope passing performance test, and night driving test.
[0039] The tests for surface navigation include static parameters on water, exit angle and entry angle tests, maximum speed determination, water turning performance tests, and heading stability tests.
[0040] Reference Figures 1 to 3This application provides an amphibious dynamic load testing system for a transport vehicle 100, used to test the dynamic load data of the transport vehicle 100 during movement. The amphibious dynamic load testing system for the transport vehicle 100 includes multiple strain gauges, multiple accelerometers, and a dynamic signal testing and analysis system. The multiple strain gauges are respectively installed inside the front bottom deck 10, the middle bottom deck 20, and the rear cover plate 30 of the jet pump position of the transport vehicle 100. The multiple accelerometers are respectively installed in the front bottom deck 10 and the rear cover plate 30 of the jet pump position. The dynamic signal testing and analysis system is electrically connected to the multiple strain gauges and the multiple accelerometers. The dynamic signal testing and analysis system is used to receive and analyze the signals collected by the strain gauges and accelerometers.
[0041] In the above embodiments, the transport equipment 100 can travel on land or on water. In some embodiments, when the transport equipment 100 is traveling on land, it includes 18 strain gauges and 4 accelerometers; 5 strain gauges and 2 accelerometers are located inside the front bottom deck 10, 5 strain gauges are located inside the middle bottom deck 20, and 8 strain gauges and 2 accelerometers are located inside the rear cover plate 30 at the jet pump location. In other embodiments, when the transport equipment 100 is traveling on water, it includes 7 strain gauges and 4 accelerometers; 2 strain gauges and 2 accelerometers are located inside the front bottom deck 10, 2 strain gauges are located inside the middle bottom deck 20, and 3 strain gauges and 2 accelerometers are located inside the rear cover plate 30 at the jet pump location.
[0042] The amphibious dynamic load testing system for the transport equipment 100 provided in this application embodiment uses multiple strain gauges and accelerometers installed at different locations on the transport equipment 100 (e.g., inside the front bottom deck 10, inside the middle bottom deck 20, and inside the rear cover plate 30 at the spray pump location) to collect data on the transport equipment 100 during movement. The data is then transmitted to a dynamic signal testing and analysis system, which analyzes the signals collected by the strain gauges and accelerometers to obtain dynamic load data of the transport equipment 100 during movement.
[0043] In some embodiments, the strain gauge may be a resistance strain gauge, each strain gauge including a plurality of grid wires, the extension directions of two adjacent grid wires being arranged at an angle.
[0044] In the above embodiments, each strain gauge may include three grid wires, and the angle between the extending directions of two adjacent grid wires is between 10° and 60°. With this configuration, the grid wires on the strain gauge can collect strain data in different directions, thereby improving the comprehensiveness of the strain gauge data collected.
[0045] In the above embodiment, each grid wire is used to lead out a strain acquisition channel, and each strain acquisition channel is independently electrically connected to the dynamic signal testing and analysis system. With this configuration, the data acquired by each strain acquisition channel can be independently transmitted to the dynamic signal testing and analysis system.
[0046] In some embodiments, the plurality of accelerometers include a first accelerometer and a second accelerometer, the acquisition direction of the first accelerometer being perpendicular to the acquisition direction of the second accelerometer; the first accelerometer and the second accelerometer are provided on the front bottom deck 10, and the first accelerometer and the second accelerometer are also provided on the rear cover plate 30 at the spray pump location.
[0047] In the above embodiments, in conjunction with the embodiment that includes four accelerometers, two accelerometers are provided on the inner side of the front bottom deck 10, including a first accelerometer and a second accelerometer; two accelerometers are provided on the inner side of the rear cover plate 30 at the spray pump position, including a first accelerometer and a second accelerometer.
[0048] With the above settings, two accelerometers located at the same position have different acquisition directions, allowing for the measurement of acceleration in different directions at that position, thereby improving the comprehensiveness of the accelerometer data.
[0049] Reference Figure 4 The methods include:
[0050] S100: Multiple strain gauges are respectively installed inside the front bottom deck, the middle bottom deck, and the rear cover plate of the jet pump position of the transport equipment; multiple accelerometers are respectively installed on the front bottom deck and the rear cover plate of the jet pump position; and the multiple strain gauges and multiple accelerometers are connected to the dynamic signal test and analysis system.
[0051] S200: Tests dynamic load data of transport equipment traveling on land.
[0052] In the S200, the dynamic load data for testing the transport equipment 100 while it is traveling on land includes:
[0053] Test the dynamic load data of the transport equipment 100 in the first speed range;
[0054] Test the dynamic load data of the transport equipment 100 in the second speed range;
[0055] The dynamic load data of the test vehicle 100 in the third speed range is tested. The maximum speed in the first speed range is less than or equal to the minimum speed in the second speed range, and the maximum speed in the second speed range is less than the minimum speed in the third speed range.
[0056] For example, the transportation equipment 100 can travel on land, including on flat hard surfaces, with a first speed range of 0-40 km / h, a second speed range of 40-80 km / h, and a third speed range of 80-100 km / h.
[0057] The range of the transport equipment 100 can vary depending on the speed range. For example, the transport equipment 100 can travel 100km at 0-40km / h, 350km at 40-80km / h, and 50km at 80-100km / h.
[0058] With the above settings, the dynamic load data of the transport equipment 100 can be tested under different speed ranges.
[0059] In the above embodiments, the dynamic load data of the transport equipment 100 when driving on land also includes: conducting maximum speed test, acceleration characteristic test, minimum stable speed test, braking performance test, steering performance test, coasting test, longitudinal slope and side slope passing performance test, and night driving test on the transport equipment 100.
[0060] S300: Tests dynamic load data of transport equipment navigating on the water surface.
[0061] In S300, the dynamic load data for testing the transport equipment 100 on the water surface also includes: conducting static parameter tests on the transport equipment 100 on the water, tests on the exit angle and entry angle, determination of maximum speed, tests on water turning performance, and tests on course stability.
[0062] The amphibious dynamic load testing method for the transport equipment 100 provided in this application embodiment can test the dynamic load data of the transport equipment 100 under different driving conditions by testing both the dynamic load data of the transport equipment 100 when it is traveling on land and the dynamic load data of the transport equipment 100 when it is traveling on water.
[0063] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions made by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A method for testing the dynamic load of amphibious transport equipment, characterized in that, Strain gauges and accelerometers are installed at the front, middle and rear of the amphibious transport equipment. Tests are conducted in three non-overlapping speed ranges under both land and water driving conditions. The signals from the strain gauges and accelerometers at each location are analyzed by a dynamic signal test and analysis system to achieve dynamic load testing of the amphibious transport equipment.
2. The dynamic load testing method for amphibious transport equipment according to claim 1, characterized in that, Each strain gauge includes multiple grid wires, and the extension directions of two adjacent grid wires are arranged at an angle. The included angle is 10~60°; Each of the grid wires is used to lead out a strain acquisition channel, and each strain acquisition channel is independently electrically connected to the dynamic signal test and analysis system.
3. The dynamic load testing method for amphibious transport equipment according to claim 2, characterized in that, The accelerometers are arranged in pairs, and the acquisition directions of the accelerometers in the same pair are perpendicular to each other.
4. The dynamic load testing method for amphibious transport equipment according to claim 3, characterized in that, The amphibious transport vehicle is equipped with at least two strain gauges at the front, middle and rear of each section. The amphibious transport equipment is equipped with at least one set of accelerometers at both the front and rear.
5. The dynamic load testing method for amphibious transport equipment according to claim 1, characterized in that, The land driving test items include maximum speed test, acceleration characteristic test, minimum stable speed test, braking performance test, steering performance test, coasting test, longitudinal slope and side slope passing performance test, and night driving test.
6. The dynamic load testing method for amphibious transport equipment according to claim 1, characterized in that, The tests for surface navigation include static parameters on water, exit angle and entry angle tests, maximum speed determination, water turning performance tests, and heading stability tests.