Double-acting retarder

Abstract

The invention discloses a double-acting retarder, which comprises a frame, a speed changer and a transmission shaft, and the double-acting retarder is characterized in that an output shaft of a speed changing box is connected with a cam and a brake disc body, two sides of the cam and the brake disc body are respectively and symmetrically provided with a plunger pump, the plunger pumps are connected with a heat radiating oil tank through an oil inlet pipe with a one-way valve A, the oil inlet pipe is connected with a one-way valve B through a tee joint, the other end of the one-way valve B is connected with a brake device through an oil outlet pipe, the oil outlet pipe is also connected with a throttling valve through a tee joint, the throttling valve is connected with the heat radiation oil tank through an oil return pipe, the outer side of each plunger pump is wrapped by a brake slide groove, a thrusting air chamber is arranged between the bottom end of each plunger pump and the brake slide groove, the front end of each plunger pump is provided with a guide wheel, the guide wheel is matched with the came and the brake disc body, the thrusting air chamber is connected with an air storage tank through a retarding switch, and both the retarding switch and the throttling valve are connected with a control unit.

Description

technical field [0001] The invention relates to the field of automobile retarders, in particular to a double-acting retarder. Background technique [0002] At the beginning of 2012, the Ministry of Industry and Information Technology issued the "Notice on Further Improving the Safety and Technical Performance of Large and Medium-sized Passenger and Truck Vehicles, Strengthening the Management of Vehicle <Announcements> and Registration Management", "Dangerous goods transport vehicles and trucks with a total mass greater than 12 tons should be equipped with retarders or other auxiliary braking devices". "From March 1, 2012, the newly finalized dangerous goods transport vehicles and passenger cars and trucks with a total mass greater than 12 tons shall meet the above requirements; Passenger cars and trucks with a total mass greater than 12 tons shall meet the above requirements." The popularization and application of the retarder is expected to achieve breakthrough dev...

AI Technical Summary

Problems solved by technology

[0004] However, the price of both retarders is very high, and few people voluntarily install them

In addition, the eddy current retarder has the characteristics of large mass, high power consumption, poor continuous working stability and the need for regular maintenance. Compared with the eddy current retarder, the hydraulic retarder has complex structure, manufacturing technology and The accuracy requirement is high, domestically produced ones are rare at present. During use, a certain amount of fuel consumption will be caused by pump air loss. The hydraulic retarder cools down through the engine cooling system, so even when the engine speed is downhill It should not be too low, as long-time work will cause the engine temperature to be too high and cause damage to various parts, and the behavior of coasting in neutral gear must be prohibited

Images