A hydraulic-electric composite retarder with a bridge structure

Abstract

The invention discloses a bridge structure hydraulic composite retarder, and belongs to the technical field of automobile auxiliary braking. The retarder is divided into an eddy current retarder part,a hydraulic retarder part, a built-in pump part and a half-bridge part; wherein the retarder comprises a stator outer ring, a stator inner ring, a left stator impeller, a right stator impeller, a left volute, a right volute, a left rotor, a right rotor, an excitation coil, a sealing baffle plate, a bearing seat, a left bridge shell, a right bridge shell and a half shaft. The retarder is directlyinstalled on the rear axle of a trailer and is used for carrying out slow-speed braking on the trailer; two oil inlet pumps are integrated in the retarder, the oil inlet pressure of the hydraulic retarder is increased, and rapid liquid filling of the hydrodynamic retarder is facilitated; the retarder is made into an assembly structure to directly replace the differential mechanism assembly of an original power bridge, and the retarder is installed in the middle of the axle, and the half shaft is detachable; the retarder can be made into an integrated assembly, and the retarder and the axle areused as a whole axle for assisting braking, the safety coefficient is higher, the service life of the whole axle is longer, and the braking effect is better.

Description

technical field [0001] The invention belongs to the technical field of automobile auxiliary braking, in particular to a hydraulic-electric compound retarder with a bridge structure. Background technique [0002] Trailer vehicle transportation is an important form of transportation that can improve transportation productivity, reduce transportation costs, and increase the utilization rate of transportation vehicles. A big security risk. At present, retarders have begun to be installed in large quantities on trucks and passenger cars with integrated chassis, and satisfactory results have been achieved. Now, a difficult problem that retarder manufacturers generally face is how to install the retarder on the trailer vehicle. Since the power of the trailer comes from the trailer, and the axle of the trailer is a supporting bridge, it does not have a power transmission device itself, so this brings difficulties to the installation of the retarder on the trailer. On the other ha...

AI Technical Summary

Problems solved by technology

Use the car drive axle to replace a rear axle of the existing trailer and install an eddy current retarder at the front end of the differential package or lead it out on the trailer beam, and connect the rotor to the flange of the drive shaft. Trailer braking effect is obvious, but heavy and costly

[0004] In previous studies, it was found that the hydraulic retarder or the hub-type electromagnetic liquid-cooled retarder and the wheel-side reducer were integrated and installed on the hub. Due to the size limitation of the hub, the speed of the wheel-side reducer is relatively small, so that The rotor speed of the retarder is low, which affects the braking performance

[0005] The hydraulic retarder is installed in the middle of the non-drive axle of the trailer, and after the speed is increased through the wheel speed reducer, the fixed-axis gear train is added next to the rotor impeller to increase the speed by 1.8 times. This scheme has a complex structure and high cost.

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