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Electro-hydraulic compound retarder with eddy current function-compatible blades

A hydraulic-electric compound and retarder technology, which is applied in the direction of liquid resistance brakes, asynchronous induction clutches/brakes, brake types, etc., can solve the problems of complex structure and low power density, and achieve simplified structure, high-quality power density, The effect of simple structure

Active Publication Date: 2018-11-09
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of retarder is actually composed of two sets of relatively independent electric eddy current retarding and hydraulic retarding systems, and still has the characteristics of complex structure and low power density.

Method used

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  • Electro-hydraulic compound retarder with eddy current function-compatible blades
  • Electro-hydraulic compound retarder with eddy current function-compatible blades
  • Electro-hydraulic compound retarder with eddy current function-compatible blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0035] Such as figure 1 As shown, the first embodiment of a hydroelectric composite retarder with blades and eddy current functions mainly includes: rotor, stator part, excitation coil group, and control system. The stator part includes a side cover 2 and a stator 4 . The rotor 3 has a disk structure as a whole, and the traditional hydraulic retarder hydraulic circulation circle is arranged on the side of the disk; the stator 4 is a rotary structure, and the side corresponding to the rotor disk circulation circle structure is a hydraulic circulation circle structure. In the first embodiment, the side covers are made of non-magnetic materials, and the rotor blades, stator blades and other magnetic circuit parts are made of magnetic materials; It can control the fluid flow and change the fluid momentum moment; the blade as a whole has the function of magnetic conduction and can be used to form a closed magnetic circuit.

[0036] In the first embodiment, the stator 4 remains st...

Embodiment approach 2

[0040] Such as image 3 As shown, the second embodiment of a hydroelectric compound retarder with blades with eddy current function is compared with the first embodiment, mainly on the basis of the single-sided structure, it is changed to two-sided stators, intermediate rotors and double-coils. The symmetrical design of the group is used to balance the axial attraction between the stator and the rotor on one side; at the same time, the axial size is effectively reduced, the overall structure is optimized, and the braking effect is improved. Such as Figure 6 Shown: The rotor is a traditional hydraulic retarder hydraulic rotor disk structure with symmetrical arrangement on both sides; Figure 7 Shown: The stator has the same structure as the stator described in Embodiment 1, but two stators are added with left-right symmetry.

[0041] Compared with the first embodiment, the specific improvement of the second embodiment is: the side cover is removed, and the right side stator ...

Embodiment approach 3

[0044] Such as Figure 5 As shown, the third embodiment of a hydroelectric composite retarder with blades with eddy current function is compared with the second embodiment, mainly in that the two groups of small closed magnetic circuits in the second embodiment are changed to a large closed magnetic circuit The design scheme, and optimize the design of the second structure of the implementation scheme accordingly.

[0045] The third embodiment, when the eddy current slow part is working, the two sets of excitation coils are fed with direct current in the same direction to generate a magnetic field, and the left stator, the right stator, the blades on the rotor and the magnetically conductive part, and the stator The gap between it and the rotor forms a large closed magnetic circuit as a whole, and the magnetic circuit is as Figure 5 shown.

[0046] In the third embodiment shown, the hydraulic retarding part is basically the same as that in the second embodiment.

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Abstract

The invention discloses an electro-hydraulic compound retarder with eddy current function-compatible blades, and belongs to the field of non-contact automobile manufacturing. Reformation design is carried out by utilizing a rotor and stator circulating circle structure of a traditional hydrodynamic retarder, blade wall surfaces control the flow of fluids, angular momentums of the fluids are changed, and the function of the hydrodynamic retarder is retained. The blades have a magnetic conductive function; a magnet exciting coil is arranged in the retarder to carry out magnet excitation, the blades serve as a part of a closed magnetic circuit so as to form a magnetic circuit, and the magnet exciting coil adds an eddy current retarding function for the retarder during the work. Through abovedesign, when the original hydrodynamic retarding function is retained, the same optimized blade structure of the retarder fuses the eddy current retarding function, so that an electro-hydraulic compound retarder which is full in speed range, high in quality, high in power density, rapid in response, simple in structure and high in integration is successfully designed.

Description

technical field [0001] The invention relates to a hydraulic-electric composite retarder with blades having the function of electric eddy current, which belongs to the field of non-contact automobile braking. Background technique [0002] The retarder is a safety auxiliary device developed to solve the problems of insufficient braking force and severe wear of the main brake and wheel train caused by frequent braking when heavy vehicles go down a long slope. It uses a non-contact working method to apply the braking force to the vehicle. On the transmission parts, it plays the role of consuming harmful energy and reducing the speed of the vehicle. At present, there are two main types of eddy current retarder and hydraulic retarder used in heavy vehicles. [0003] The working principle of the traditional eddy current retarder is: when the metal surface is cutting the magnetic induction line, the air gap flux density changes periodically with the rotation of the rotor, and an ed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D57/02H02K49/04
CPCF16D57/02H02K49/04
Inventor 李德胜庄星瀚田金山高志伟张凯
Owner BEIJING UNIV OF TECH
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