Propeller thrust measuring device

Abstract

The invention provides a propeller thrust measuring device, which comprises a base, an upper part frame, two lead screw systems, a worm gear and worm system, and a measuring system. The entire propeller thrust measuring device spans over a circulating water tank, and the center line of the device and that of the circulating water tank are on the same vertical plane; a lifting column is lowered to an appropriate depth by utilizing the lead screw systems after a propeller and a balance are fixed, and the lifting column is rotated via the worm gear and worm system so as to adjust an axis of the propeller to be coincide with the center line of the circulating water tank; and the propeller is turned on to a certain rotation speed, the balance can transmit a thrust value of the propeller to a water surface data acquisition instrument under the condition of zero flow velocity, and a thrust value of the propeller under the condition of a flow velocity can be measured through turning on a flow generating device of the circulating water tank. The propeller thrust measuring device is simple in structure, accurate in measurement and high in practical value, can provide important reference numerical values for propeller thrust measurement of water surface and underwater vehicles, and can conduct motion control research of the vehicles more precisely.

Description

technical field [0001] The invention relates to a measuring device, in particular to a propeller thrust measuring device, which is applied in a circulating water tank to measure propeller thrust, and belongs to the field of aircraft propeller thrust measurement. Background technique [0002] With the depletion of land resources, human beings have turned their attention to the rich marine resources. In addition to ships sailing on the sea, a variety of marine detection equipment has emerged, such as HOV, ROV, UUV, AUV, etc. These equipment are excellent The shortcomings are obvious and there are many differences, but the vast majority of marine exploration equipment uses propellers as propulsion equipment. To sum up, accurate measurement of various parameters of the propeller is of great significance to the overall design, dynamic analysis and even motion control of the aircraft. [0003] According to the knowledge of the ship principle, the open water test of the propeller ...

AI Technical Summary

Problems solved by technology

[0005] First of all, the equipment is too bulky and unintelligent. After fixing the propeller on the test equipment, it takes a lot of manual work to move the test equipment to the vicinity of the circulating water tank and buckle it upside down in the water tank. Sometimes a crane is used to lift the test equipment

[0006] Secondly, for the same propeller, only the thrust data in the forward direction is not enough, so after the propeller forward test is completed, the equipment must be reversed. The above test process is not only time-consuming and laborious, but may also cause injury to the test personnel

[0007] Finally, today's test equipment and balances are not integrated enough, and the balance is delicate and easy to damage. During the test, the data transmission lines of the balance are always exposed, and these wires are generally relatively thin. The test failed; in addition, the current in the data transmission line is milliamp level, and the current of the propeller motor can reach the level of ampere. The large current has strong interference with the small current, and the influence between the two will cause the data measured in the test to be inaccurate. Severe damage to the instrument

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