CN109572647B

CN109572647B - Self-powered heat dissipation type hydraulic retarder

Info

Publication number: CN109572647B
Application number: CN201811388671.4A
Authority: CN
Inventors: 王昕�; 陈锐; 李春爽; 刘昕晖; 王曾祥
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2018-11-21
Filing date: 2018-11-21
Publication date: 2020-12-15
Anticipated expiration: 2038-11-21
Also published as: CN109572647A

Abstract

The invention discloses a self-powered heat dissipation type hydraulic retarder in the technical field of retarders, which comprises a coupler, wherein a wet clutch is arranged between a main transmission shaft and other transmission shafts in the coupler, the wet clutch can be disconnected from the power connection with the main transmission shaft, the problem that the retarder system idles and the heat dissipation system consumes the power of an engine is solved, partial kinetic energy can be recovered and stored by utilizing the principle that the energy of the hydraulic system is reversible, and the kinetic energy is released when the vehicle starts or accelerates, an auxiliary engine drives the vehicle together, the working state of the engine can be improved, the oil consumption is saved, and the self-powered heat dissipation type hydraulic retarder has important practical value for starting heavy-load vehicles, especially full-load heavy.

Description

Self-powered heat dissipation type hydraulic retarder

Technical Field

The invention relates to the technical field of retarders, in particular to a self-powered heat dissipation type hydraulic retarder.

Background

The eddy current retarder mainly dissipates heat by utilizing air convection when an automobile runs, has a large element allowable temperature range which can reach 650 ℃ at most, but has low power density, so the eddy current retarder has large volume under the same braking power, does not consume the power of an engine during braking, but consumes about 1% of the power of the engine due to the heat dissipation structure of the eddy current retarder during idling.

The hydrodynamic retarder utilizes the internal liquid circulation of the retarder, radiates heat through an engine cooling system, generally has the temperature lower than 140 ℃, has small volume, but must depend on the engine to radiate heat during braking in order to ensure the normal work of the system, and has requirements on the rotating speed of the engine all the time in order to take account of the temperature of the engine, usually about 1100 revolutions per minute, and simultaneously consumes about 4 percent of the power of the engine due to the air stirring loss of an impeller during idling.

From the response speed, the response time of the eddy current retarder is fast, and is about 40 ms; the response time of the hydraulic retarder is about 20 times of that of the hydraulic retarder, and both the hydraulic retarders can only consume energy from the aspect of energy, so that a self-powered heat dissipation type hydraulic retarder is provided.

Disclosure of Invention

The invention aims to provide a self-powered heat dissipation type hydraulic retarder, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a self-power heat dissipation formula hydraulic retarber, includes the coupler, the coupler has axle one, axle two, axle three, axle four and five play axles altogether, axle one is connected with axle two-way hub connection, the axle of car is connected to axle two, the gearbox of axle one connection car, axle three connects the cooling circulation pump, axle five connects the generator, axle four connects braking hydraulic component, the oil absorption mouth of cooling circulation pump passes through the oil absorption mouth of pipe connection low pressure oil tank, and the oil inlet of the oil pressing mouth of cooling circulation pump passes through the oil inlet of pipe connection radiator, the oil return opening of radiator is through connecting the oil return opening of oil pipe connection low pressure oil tank, the oil absorption mouth of braking hydraulic component passes through the oil absorption mouth of pipe connection low pressure oil tank, and the oil pressing mouth of low pressure oil tank passes through the export of pipe connection to hydraulic accumulator, the generator passes through cable and motor electric connection, the output shaft of the motor is connected with a heat dissipation fan, the heat dissipation fan and the radiator are fixedly installed, and the heat dissipation fan blows air to the radiator for heat dissipation.

The coupler is a gear reducer, and a wet clutch is arranged in an inner cavity of the coupler.

The top of the low-pressure oil tank is provided with an overflow device, and the overflow device is communicated with the bottom of the braking hydraulic component through an oil pipe.

Compared with the prior art, the invention has the beneficial effects that:

according to the self-powered heat dissipation type hydraulic retarder, the wet clutch is arranged between the main transmission shaft and other transmission shafts in the coupler, the power connection with the main transmission shaft can be disconnected, the problem that the retarder system idles and the heat dissipation system consumes the power of an engine is solved, partial kinetic energy can be recycled and stored by utilizing the principle that the energy of the hydraulic system is reversible, the kinetic energy is released when the vehicle starts or accelerates, the engine is assisted to drive the vehicle together, the working state of the engine can be improved, the oil consumption is saved, and the self-powered heat dissipation type hydraulic retarder has important practical value for the start of a full-load vehicle on a slope.

Drawings

Fig. 1 is a schematic structural diagram of a self-powered heat dissipation type hydraulic retarder of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution:

the utility model provides a self-power heat dissipation formula hydraulic retarber, includes coupler 1, coupler 1 has axle one 2, axle two 3, axle three 5, axle four 7 and five 11 altogether five play axles, axle one 2 and two 3 logical hub connections of axle, axle two 3 connects the axle 4 of car, the gearbox of car is connected to axle one 2, cooling circulating pump 6 is connected to axle three 5, axle five 11 is connected generator 12, axle four 7 connects braking hydraulic component 8, cooling circulating pump 6's oil absorption mouth passes through the oil absorption mouth of pipe connection low pressure oil tank 10, and cooling circulating pump 6's the oil inlet that presses oil port through pipe connection radiator 16, the oil return mouth of radiator 16 is through connecting the oil return opening of oil pipe 17 connection low pressure oil tank 10, braking hydraulic component 8's oil absorption mouth through the oil absorption mouth of pipe connection low pressure oil tank 10, and the oil compression mouth of low pressure oil tank 10 passes through the export of pipe connection to hydraulic accumulator 9, the generator 12 is electrically connected with the motor 13 through a cable, an output shaft of the motor 13 is connected with the heat dissipation fan 14, the heat dissipation fan 14 and the heat sink 16 are fixedly installed, and the heat dissipation fan 14 blows air to the heat sink 16 for heat dissipation.

The coupler 1 is a gear reducer, and a wet clutch is arranged in an inner cavity of the coupler 1, so that the coupler 1 has a certain protection effect and protects the internal structure of the coupler 1;

the top of the low-pressure oil tank 10 is provided with an overflow device which is communicated with the bottom of the brake hydraulic assembly 8 through an oil pipe, so that redundant energy can overflow and return to the low-pressure oil tank 10 conveniently.

The working principle is as follows: the first shaft 2 and the second shaft 3 are original vehicle main transmission shafts, the coupler 1 is arranged at the middle position and still keeps through shaft connection, an electrically controlled wet clutch is arranged in the coupler 1, when the retarder system works, the clutch is connected, the third shaft 5, the fourth shaft 7 and the fifth shaft 11 are associated with the first shaft 2 and the second shaft 3, the fourth shaft 7 is connected with a braking hydraulic component 8 in a hydraulic retarder system, kinetic energy can be converted into hydraulic energy to be stored in an energy accumulator 9 during braking, redundant energy is returned to a low-pressure oil tank 10 through an overflow device, meanwhile, the converted thermal energy is brought into the low-pressure oil tank 10 through hydraulic oil, so that the oil temperature in the oil tank is increased, the third shaft 5 is connected with a cooling circulating pump 6, high-temperature hydraulic oil is pumped out of the low-pressure oil tank 10 through an oil pipe and is transmitted to the cooling circulating pump 6, the cooling circulating pump 6 discharges the high-temperature hydraulic oil to a radiator 16 through an oil discharge pipe 15, the low-pressure oil flows back to the low-pressure oil tank 10, the shaft five 11 is connected with the generator 12, the generator 12 is electrically connected with the motor 13, the motor 13 drives the cooling fan 14 to rotate, and forced air cooling heat dissipation is carried out on the radiator 16, so that the whole retarder system does not generate movement loss when not working, when the retarder system works, the response speed of the retarder system depends on the response speed of the clutch, is much faster than that of a hydraulic retarder, is close to the eddy current retarder, and the energy of the retarder system during braking can be recovered and released during starting.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A self-powered heat dissipation formula hydraulic retarber, includes coupler (1), its characterized in that: the coupler (1) is provided with five output shafts of a first shaft (2), a second shaft (3), a third shaft (5), a fourth shaft (7) and a fifth shaft (11), the first shaft (2) is connected with the second shaft (3) through a shaft, the second shaft (3) is connected with an axle (4) of an automobile, the first shaft (2) is connected with a gearbox of the automobile, the third shaft (5) is connected with a cooling circulating pump (6), the fifth shaft (11) is connected with a generator (12), the fourth shaft (7) is connected with a braking hydraulic component (8), an oil suction port of the cooling circulating pump (6) is connected with an oil suction port of a low-pressure oil tank (10) through a pipeline, an oil pressing port of the cooling circulating pump (6) is connected with an oil inlet of a radiator (16) through a pipeline, an oil return port of the radiator (16) is connected with an oil return port of the low-pressure oil tank (10) through a connecting oil pipe (17), and an oil suction port of the braking hydraulic component (8) is connected with an, and the oil pressing port of the low-pressure oil tank (10) is connected to the outlet of the hydraulic energy accumulator (9) through a pipeline, the generator (12) is electrically connected with the motor (13) through a cable, the output shaft of the motor (13) is connected with the heat dissipation fan (14), the heat dissipation fan (14) and the radiator (16) are fixedly installed, and the heat dissipation fan (14) blows air to the radiator (16) for heat dissipation.

2. The self-powered heat dissipation hydraulic retarder according to claim 1, wherein: the coupler (1) is a gear reducer, and a wet clutch is arranged in an inner cavity of the coupler (1).

3. The self-powered heat dissipation hydraulic retarder according to claim 1, wherein: the top of the low-pressure oil tank (10) is provided with an overflow device, and the overflow device is communicated with the bottom of the brake hydraulic assembly (8) through an oil pipe.