Propeller centrifugal load test device
A technology of centrifugal load and test device, which is applied in the field of propeller test, can solve the problems of secondary damage of test piece, large load error, load cannot be unloaded immediately, etc., and achieve the effect of eliminating the influence
Active Publication Date: 2017-06-13
AECC SHENYANG ENGINE RES INST
View PDF5 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] 1. The centrifugal load and the aerodynamic load will interfere with each other, because the load acting on the propeller hub has aerodynamic load in addition to the centrifugal load, and the loading position is relatively close, so if there is mutual interference, the applied load error will be large. The test It is often necessary to repeatedly calibrate the load before;
[0006] 2. When one side of the test piece is damaged and cannot continue to bear the centrifugal load, since the propeller hub is fixed on the foundation platform through the connecting piece, the load on the other side cannot be unloaded immediately, causing the centrifugal load to cause damage to the test piece. secondary damage
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
specific Embodiment
[0033] Such as figure 1 and figure 2 As shown, when installing the propeller centrifugal load test device, first select the load application device 4 that matches the number of propeller blades. In this embodiment, a propeller with six blades 3 is selected, and the load application device 4 is a regular hexagon , each side wall of which is perpendicular to the axis of a paddle 3, an oil inlet 5 is arranged at the center of the bottom surface of the load applying device 4, and an oil inlet passage 6 is arranged around the oil inlet 5, and there are six in this embodiment Paddle 3, therefore set six oil inlet channels 6, each oil inlet channel 6 all coincides with the axis of its corresponding paddle 3, and each oil inlet channel 6 is all perpendicular to its corresponding rodless piston 8, will The load applying device 4 is installed in the hub 1;
[0034] Then screw on the locking rod 11 in each paddle 3, and place the ejector rod 10 behind the locking rod 11. The ejector r...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a popeller centrifugal load test device which comprises a load application device and a force bearing mechanism. The load application device is arranged in a propeller hub and is a regular polygon, the axis of each paddle is perpendicular to the side wall of the load application device closest to the paddle, the side wall of each side of the polygonal side wall of the load application device is provided with an oil cavity, each oil cavity is internally provided with a rodless piston, the load application device is internally provided with an oil inlet and an oil inlet channel, and the oil cavity is communicated with the oil inlet through the oil inlet channel. The force bearing mechanism comprises a first force bearing component and a second force bearing device, the first force bearing component is arranged in the propeller hub, one end of the first force bearing component far away from the paddle is in contact with the rodless piston, the other end of the first force bearing component is in contact with the second force bearing device, the end face of one of the two ends is a spherical surface, and the second force bearing device is fixed in the paddle and provided with a strain gage.
Description
technical field [0001] The invention relates to the technical field of propeller testing, in particular to a propeller centrifugal load test device. Background technique [0002] In order to test the static force and fatigue strength of the aircraft propeller hub, it is necessary to conduct static and fatigue tests on the propeller hub. The propeller hub bears the centrifugal force of the blades during work, and also bears the aerodynamic load generated by the blades. In order to ensure the safety of the aircraft, it is necessary to simulate the load under the test conditions for the test, and give the safe life. [0003] In structural static and fatigue tests, in order to simulate the centrifugal force load generated by the propeller blade during rotation, it is generally used to apply radial load to the simulated blade in the direction of the centrifugal force load, and the load application device is to simulate the blade. The radially outer side is connected to the load...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B64F5/60
Inventor 刘海苏军项钧清刘亮亮刘伟强
Owner AECC SHENYANG ENGINE RES INST