Electro-hydraulic compound retarder provided with built-in pump
An electro-hydraulic composite and retarder technology, applied in electric brakes/clutches, hydraulic resistance brakes, asynchronous inductive clutches/brakes, etc., can solve the problems of low power, difficult working chamber, long response time, etc. The effect of increasing power density, high power density, and improving reaction speed
Active Publication Date: 2018-06-29
BEIJING UNIV OF TECH
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Problems solved by technology
The hydraulic retarder is characterized by high power density at high speed; however, low power at low speed and long response time. Due to the internal high-speed and high-pressure flow field environment during work, it is difficult for the working fluid to enter the circular working chamber and requires a large pressure to press into it.
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[0026] The principles and features of the present invention will be further described below in conjunction with the accompanying drawings.
[0027] Such as figure 1 , 2 As shown, a new electro-hydraulic composite retarder with built-in pump mainly includes: eddy current retarder part 1, hydraulic retarder part 2 and built-in pump part 3; components mainly include: stator 4, rotor 6, excitation coil 5. Sealing baffle, side cover 7; Figure 4 As shown: the highly integrated rotor is mainly composed of the outer ring magnetic part 13, the middle hydraulic part 14, and the inner ring pump blade part 15; its side cover is mainly composed of the side hydraulic part and the inner ring pump volute It consists of two parts.
[0028] The eddy current retarding part mainly includes: the stator, the magnetically conductive part of the outer ring of the rotor, the excitation coil and the sealing baffle; the stator is cylindrical, and the inner side is processed with raised magnetic pole...
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The invention discloses an electro-hydraulic compound retarder provided with a built-in pump. The retarder comprises an eddy current retarding part, a hydraulic retarding part and a built-in pump part, wherein the eddy current retarding part comprises a stator, a rotor outer ring magnetic conduction part, a magnet exciting coil and a sealing baffle; the hydraulic retarding part comprises a side cover and a rotor middle hydraulic part; the built-in pump part comprises a rotor inner ring pump blade part and a side cover pump volute part. The pump is creatively built in the electro-hydraulic compound retarder; an integrated rotor is designed successfully, the eddy current retarding part is integrated on an outer ring, a circulating circle of the hydraulic retarding part is integrated in the middle, and blades of the pump are integrated on an inner ring. By means of the built-in pump without power consumption, circulating action of a working solution is completed, and the function of extracting out the working solution when the retarder stops working is realized; pressure of the working solution before entering the hydraulic retarding part is increased by the built-in pump, the workingsolution is promoted to enter the circulating circle of a hydraulic retarder, and reaction speed of the hydraulic retarding part is increased.
Description
technical field [0001] The invention relates to an electro-hydraulic compound retarder with a built-in pump, which belongs to the field of non-contact automobile braking. Background technique [0002] Aiming at the problems of insufficient braking capacity on long slopes under braking of heavy vehicles and serious wear of the main brake and wheel train caused by frequent braking, the retarder, a safety auxiliary device for the braking system, is developed. It uses a non-contact working method to apply the braking force to the On the transmission parts of the vehicle, it plays the role of consuming harmful energy and reducing the speed of the vehicle. [0003] The basic principle of the eddy current retarder is: when the metal plane or arc is cutting the magnetic induction line, the air gap flux density changes periodically with the rotation of the rotor, and an eddy current potential will be generated on the surface of the stator and within a certain depth range. , and gene...
Claims
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Login to View More IPC IPC(8): H02K49/04F16D57/06
CPCF16D57/06H02K49/043
Inventor 李德胜田金山纪克红胡朝阳高志伟
Owner BEIJING UNIV OF TECH