Hydraulic retarder provided with two end surface thrust plates and double rows of radial plungers

Abstract

A hydraulic retarder provided with two end surface thrust plates and double rows of radial plungers comprises a transmission shaft, wherein the front end of the transmission shaft is connected with a gearbox, the rear end of the transmission shaft is connected with a drive axle, two cylinders are mounted in the middle of the transmission shaft in parallel, annular slots are formed in the cylinders, cylinder middle rings are mounted in the annular slots, double rows of radial plunger holes are formed in the outer circumferential surfaces of the two cylinders in parallel, a return spring is mounted between each plunger hole and the plunger, the top of a sliding shoe mounted on each plunger is pressed on an inner ring of a needle bearing fixed on each stator, the upper side and the lower side of each stator are pressed by two variable pistons, the left side and the right side of each stator are pressed by friction blocks, the friction blocks are pressed and positioned by a left end cover and a right end cover of the retarder, the variable pistons are mounted in the middle casing, and the two cylinders are pressed with the thrust plates mounted on the left end cover and the right end cover of the retarder respectively. According to the hydraulic retarder, kinetic energy during automobile braking is recycled, the overall structure is compact, working is stable and the hydraulic retarder has the advantages of no axial force and automatic hydraulic compensation.

Description

technical field [0001] The invention belongs to the technical field of automobile retarders, and in particular relates to a double-row radial plunger hydraulic retarder with two end face distribution plates. Background technique [0002] At present, there are mainly two kinds of automobile retarders on the market: hydraulic retarder and electric eddy current retarder. The hydraulic retarder drives the liquid to rotate through the rotation of the rotor connected to the transmission shaft, so that the kinetic energy of the liquid is increased. Then impact the vane on the upper end of the stator, causing the loss of kinetic energy and converting it into heat energy to consume the kinetic energy of the car, thus playing a braking role. However, the hydraulic retarder is generally installed at the output end of the gearbox, which makes its installation more complicated. Moreover, the purchase cost is also high; while the eddy current retarder is a device that uses the principle o...

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Problems solved by technology

[0002] At present, there are mainly two kinds of automobile retarders on the market: hydraulic retarder and electric eddy current retarder. The hydraulic retarder drives the liquid to rotate through the rotation of the rotor connected to the transmission shaft, so that the kinetic energy of the liquid is increased. Then impact the vane on the upper end of the stator, causing the loss of kinetic energy and converting it into heat energy to consume the kinetic energy of the car, thus playing a braking role. However, the hydraulic retarder is generally installed at the output end of the gearbox, which makes its installation more complicated. Moreover, the purchase cost is also high; while the eddy current retarder is a device that uses the principle of electromagnetism to convert the kinetic energy of the car into heat energy and dissipate it, thereby achieving deceleration and braking. However, the weight of the eddy current retarder is large. The heat dissipation ability is poor, and the continuous working ability is relatively low. During use and maintenance, it is necessary to adjust the air gap, check the shaft seal, output shaft seal ring, fastening bolts, etc., resulting in high maintenance costs.

At the same time, it can be seen that both of these two retarders convert the kinetic energy of the car when braking into heat energy and waste it when they are working, and the braking energy has not been effectively recycled.

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