A large-scale ball bearing assembly for power facilities
A power facility, large-scale technology, applied in the field of large-scale ball bearing components, can solve the problems of non-real-time, difficult to timely and accurately obtain the bearing running state, indirect non-contact measurement, etc., and achieve the effect of novel structure
Inactive Publication Date: 2016-05-04
ZHEJIANG NORMAL UNIVERSITY
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Problems solved by technology
[0003] The present invention provides a large-scale ball bearing assembly used in electric power facilities to solve the problem that existing bearing monitoring systems in practical applications are all non-real-time, indirect non-contact measurements, and it is difficult to obtain the operating status of the bearings in a timely and accurate manner. The problem
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[0014] Including outer ring 1, balls 2, bead holder 1 3 and bead holder 2 3', and inner ring 4, the left and right ends of the outer ring 1 are respectively provided with inner ring groove 1 101 and inner ring groove 2 101', the inner ring The left and right ends of the ring 4 are respectively provided with an outer ring groove 1 401 and an outer ring groove 2 401', and the inner ring groove 101 of the outer ring is installed with an annular frame 1 5 with a radial plate 501 through interference fit. The inner hole of the annular frame 1 and the outer ring groove 1 401 of the inner ring 4 are clearance fit, and the outer ring groove 2 401' of the inner ring is installed with the ring frame 2 5 with the spoke plate 2 501' through interference fit. ', the outer edge of the ring frame 2 5' and the inner ring groove 101' of the outer ring 1 are clearance fit, and the circuit board 6 and the metal sheet 7 are respectively fixed on the left and right sides of the ring frame 1 5 by sc...
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The invention discloses a large size ball bearing component of an electric power facility and belongs to the technical field of bearings and monitoring of bearings. Inner ring grooves and outer ring grooves are formed in both the left and right ends of an outer ring and those of an inner ring; skeletons with radial plates are arranged at the left inner ring groove of the outer ring as well as the right outer ring groove of the inner ring through interference fit; a circuit board and a metal piece are arranged at two sides of each skeleton to form a radial cavity; a piezoelectric piece is bonded on the metal piece which corresponds to the radial cavity; an excited magnet is connected with the piezoelectric piece and the metal piece through a screw; a sensor is arranged on each skeleton which corresponds to the radial cavity; the piezoelectric piece, the metal piece and the sensor are connected with the circuit board through different lead units; two excitation magnets and two bead frames are fixed together through screws in sequence; and the heterogenic magnetic poles of two axially adjacent magnets are closely arranged. The large size ball bearing component of the electric power facility has the advantage that the ball bearing component has a self-energy-supply sensing and monitoring function and can be used as an independent standard part; and the device structure needs no change and real-time online monitoring can be realized.
Description
technical field [0001] The invention belongs to the technical field of bearings and monitoring thereof, and in particular relates to a large-scale ball bearing assembly used in electric facilities. Background technique [0002] Bearing is a typical mechanical basic part, which is widely used in the fields of machinery, vehicles, aerospace, ships and energy; however, bearing is also one of the most vulnerable parts in rotating machines, and 30% of rotating machinery failures % is caused by bearing failure. Therefore, the state monitoring and early fault diagnosis of bearings have attracted people's attention. On-line monitoring of bearing status has gradually become an indispensable technology in the fields of large wind turbines, ships, high-speed rail, and aircraft. The indicators to be monitored include temperature, vibration, speed, and noise. Early bearing monitoring systems were mainly plug-in. One of the disadvantages was that the distance between the sensor and the ...
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IPC IPC(8): F16C19/02F16C41/00
Inventor 阚君武范春涛曾平王淑云蒋永华黄乐帅
Owner ZHEJIANG NORMAL UNIVERSITY