Frictionless dynamometer for directly measuring propeller thrust and torque

A propeller and frictionless technology, which is applied in force/torque/work measuring instruments, measuring force, measuring vehicle traction/propulsion power, etc., can solve the problems of excessive measurement data error and high installation requirements of propeller shafting, and achieve reduction Installation requirements, improving test efficiency, and avoiding the effects of external influences

Pending Publication Date: 2021-01-05
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This treatment method has very high requirements for the installation of the propeller shafting, neither can ther

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  • Frictionless dynamometer for directly measuring propeller thrust and torque
  • Frictionless dynamometer for directly measuring propeller thrust and torque
  • Frictionless dynamometer for directly measuring propeller thrust and torque

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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0026] A frictionless dynamometer for direct measurement of propeller thrust and torque provided by an embodiment of the present invention, such as figure 1 As shown, it includes a horizontal guide housing, a vertical connecting sword 11, a horizontal gear shaft 9, a horizontal spline shaft 37, a horizontal connecting shaft 45, a measuring end shaft 46 and a signal receiver 27, wherein:

[0027...

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Abstract

The invention belongs to the field of ship hydrodynamic performance tests, and particularly discloses a frictionless dynamometer for directly measuring propeller thrust and torque, which comprises a horizontal flow guide shell, a vertical connecting sword, a horizontal gear shaft, a horizontal spline shaft, a horizontal connecting shaft, a measuring end shaft and a signal receiver, the vertical connecting sword is installed on the horizontal flow guide shell, a vertical gear shaft is installed in the vertical connecting sword, and the lower end of the vertical gear shaft is meshed with the horizontal gear shaft; the horizontal gear shaft, the horizontal spline shaft, the horizontal connecting shaft and the measuring end shaft are connected in sequence and are all mounted in the horizontalflow guide shell; and an axial strain gauge and a circumferential strain gauge are pasted on the measuring end shaft, and a wireless node is arranged at the horizontal spline shaft and used for wirelessly transmitting measuring signals measured by the axial strain gauge and the circumferential strain gauge to a signal receiver. The sensor is located on the transmission shaft on the outermost layer, thrust and torque can be directly measured at the near end of the propeller, friction force measurement and deduction work are not needed, and higher measurement precision can be achieved.

Description

technical field [0001] The invention belongs to the field of ship hydrodynamic performance test, and more specifically relates to a frictionless dynamic instrument for direct measurement of propeller thrust and torque. Background technique [0002] The ship model self-propulsion instrument is a device for measuring the propulsion performance of the propeller. Its measurement idea is to transmit the thrust and torque from the propeller to the open water tank through the propeller shaft, and install self-propelled instruments and motors and other equipment inside the open water tank. This measurement idea The advantage is that it can well transmit the force of the propeller in the water area to the inside of the open water tank, avoiding the damage of the instrument from entering the water, and it is easy to install in the actual use process and can meet the engineering requirements. [0003] But its disadvantages are also obvious. The part where the propeller shaft enters the...

Claims

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Application Information

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IPC IPC(8): G01L5/13G01L3/00G01L1/22G08C17/02
CPCG01L1/22G01L3/00G01L5/133G08C17/02
Inventor 宋磊熊立众孙江龙程尔升陈林
Owner HUAZHONG UNIV OF SCI & TECH
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