CN112196987A

CN112196987A - Active air-cooling lubricating device for gearbox

Info

Publication number: CN112196987A
Application number: CN202011199497.6A
Authority: CN
Inventors: 张富; 何鑫宇; 张晗; 常枭; 朱明昊; 李鸣鹤; 王嘉琦; 王海明
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-01-08

Abstract

The invention relates to an active air-cooling lubricating device for a gearbox, belonging to a cooling lubricating device for an automobile gearbox. The gearbox body is communicated with the active air-cooled heat dissipation module through the gearbox oil outlet pipe and the gearbox oil inlet pipe respectively, so that the gearbox body is circularly communicated with the active air-cooled heat dissipation module. The hydraulic motor is driven by the engine oil to further drive the cooling fan to carry out active air cooling by utilizing the hydraulic energy still existing in the engine oil in the gearbox, so that compared with the simple natural air cooling, the cooling effect is greatly improved, the energy is saved, and the energy loss is reduced; machine oil is inside controlling, lubricating, cooling at the gearbox body, and the oil mass is sufficient, has guaranteed the inside normal work of gearbox, has set up heating module in the inside oil bath of gearbox oil pipe department for heat machine oil when starting, preheat the inside machine oil of vehicle gearbox, make the vehicle can start fast when the start, reduce the oil consumption.

Description

Active air-cooling lubricating device for gearbox

Technical Field

The invention belongs to a cooling and lubricating device for an automobile gearbox, and particularly relates to a gearbox cooling and lubricating device for active air cooling by utilizing gearbox oil hydraulic energy.

Background

The development history of automobiles is long, along with the rapid development of the automobile industry and the improvement of the living standard of people, the automobiles become necessary tools in daily life of people, the requirements of people on the automobiles are higher and higher, the cooling and lubrication of oil in a gearbox in the automobiles are key technologies for designing the gearbox, and the long-term use and the reliability of the interior of the gearbox device are influenced. Because the automatic transmission automobile does not need to manually switch gears during driving, the operation is simple and convenient, and the automatic transmission automobile is more and more popular with consumers, a plurality of automobiles are provided with automatic transmissions, and even heavy trucks are gradually switched from the manual transmissions to the AMT. However, the working principle of the automatic gearbox is different from that of the manual gearbox, a large number of mechanisms of the automatic gearbox are driven by a hydraulic system, and the heat productivity of the mechanisms is far greater than that of the manual gearbox, so that in order to ensure the working reliability of the automatic gearbox, the automatic gearbox is provided with a gearbox oil cooler for cooling the engine oil in the gearbox, and the oil temperature of the gearbox in working is ensured to be within a proper temperature range.

Gearbox cooling system among the prior art flows from the internal oil-out of gearbox through the internal machine oil of gearbox, cools off in getting into air-cooled oil cooler, but air-cooled oil cooler only relies on the quick flow of vehicle when traveling to take away the heat, and gearbox oil after the cooling comes out from air-cooled oil cooler's oil-out, later through the oil circuit circulation get back to in the gearbox for guarantee that the inside oil temperature of gearbox during operation is in suitable temperature. But because the cooling effect can not be guaranteed to natural air cooling, the inside pipe-line system of air-cooled oil cooler does not increase substantially heat radiating area moreover many, and this cooling effect that will lead to the interior oil of gearbox is on the low side, probably leads to the interior oil temperature of gearbox still too high, is unfavorable for the inside normal work of gearbox. Researches show that oil from an oil outlet in the gearbox has a large amount of hydraulic energy and heat energy, and if the energy can be reasonably and effectively utilized, the energy recycling of the whole cooling system is improved, and unnecessary external energy consumption is saved.

The oil temperature of the gearbox has a vital influence on the performance and control of the gearbox, and through data checking and reading, both supercooling and overheating inside the gearbox can generate adverse effects, and the transmission can cause the consequences of oil seal damage, bearing annealing, thrust washer contact surface burnout, serious gear abrasion and the like due to long-term serious overheating. In winter, because the temperature in the gearbox is reduced, the oil consumption in winter is 25-30% more than that in summer, and because the temperature is reduced, the oil pressure and lubricating oil in the gearbox are thickened, so that the pressure of a clutch system is reduced, the phenomena of difficulty in moving and slipping and losing rotation exist in the starting and accelerating process of an automobile, the power of an engine is lost, and the oil consumption is increased.

Fig. 3 is a schematic diagram of air cooling of a conventional transmission, in which an engine 5 is connected to a transmission case 1, engine oil in the transmission case 1 is guided out through a transmission oil outlet pipe 2, and when passing through a pipeline, heat is taken away by rapid flow of air when a vehicle travels, and then the engine oil returns to the transmission case 1 through a transmission oil inlet pipe 4.

Disclosure of Invention

The invention provides an active air-cooling lubricating device for a gearbox, which aims to solve the problems that the natural air-cooling effect of the gearbox is low in the prior art, and the temperature in the gearbox is slowly increased when an automobile is not started for a long time and is started in winter.

The technical scheme adopted by the invention is as follows: the gearbox body is respectively communicated with the active air-cooled heat dissipation module through a gearbox oil outlet pipe and a gearbox oil inlet pipe so as to enable the gearbox body to be circularly communicated with the active air-cooled heat dissipation module;

the active air-cooled heat dissipation module comprises: the system comprises a temperature sensor, an electromagnetic two-position three-way reversing valve, a hydraulic motor, a cooling fan, a cooling pipe, an oil path combiner, an oil path branch I, a one-way valve I, an oil path branch II and a one-way valve II; the temperature sensor and the electromagnetic two-position three-way reversing valve are connected in series on an oil outlet pipe of the gearbox, the electromagnetic two-position three-way reversing valve is respectively connected in parallel with an oil way branch I and an oil way branch II with a hydraulic motor, the oil way branch I and the oil way branch II are respectively connected in parallel with an oil way combiner through a one-way valve I and a one-way valve II, the oil way combiner is connected with one end of a radiating pipe, and the other end of the radiating pipe is connected with an oil inlet pipe of the gearbox; the hydraulic motor is fixedly connected with the gearbox body and is connected with the radiating fan;

the radiating pipe adopts a U-shaped pipeline;

the gearbox body comprises a heating device, an oil pool, a motor, a hydraulic pump and a filter, wherein the oil pool is fixedly connected inside, an oil inlet pipe of the gearbox is connected with the oil pool, an internal oil outlet pipe is connected with the hydraulic pump through the heating device and the filter, the motor is connected with the hydraulic pump, and the hydraulic pump is connected with an oil outlet pipe of the gearbox through the internal oil outlet pipe;

the liquid level meter is arranged at the oil pool.

The invention has the beneficial effects that:

1. the invention utilizes the hydraulic energy still existing in the engine oil in the gearbox, and the engine oil is used for driving the hydraulic motor so as to drive the cooling fan to carry out active air cooling.

2. The invention has novel structure, low cost and easy manufacture, installation and maintenance; the U-shaped radiating pipe is used for increasing the radiating area so as to be beneficial to radiating oil.

3. The invention mainly utilizes the hydraulic energy of the engine oil to carry out active air cooling, only the oil pump is driven by a motor, the temperature sensor transmits an electric signal to the electromagnetic two-position three-way reversing valve, the hydraulic energy is utilized, and the energy is saved.

4. The engine oil in the invention is controlled, lubricated and cooled in the gearbox body, the oil quantity is sufficient, and the normal work in the gearbox is ensured.

5. The heating module is arranged at the oil outlet pipe of the oil pool in the gearbox and used for heating engine oil during starting and preheating the engine oil in the gearbox of the vehicle, so that the vehicle can be quickly started during starting, and the oil consumption is reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present invention, in which arrows are used to indicate wind direction;

FIG. 2 is a schematic view of the internal structure of the transmission housing of the present invention, with the arrows indicating the direction of oil flow;

FIG. 3 is a schematic diagram of a prior art structure, in which arrows indicate wind directions;

in the figure: the system comprises a gearbox body 1, a gearbox oil outlet pipe 2, an active air cooling heat dissipation module 3, a gearbox oil inlet pipe 4, an engine 5, a liquid level meter 101, a heating device 102, an oil pool 103, a motor 104, a hydraulic pump 105, a filter 106, a temperature sensor 301, an electromagnetic two-position three-way reversing valve 302, a hydraulic motor 303, a heat dissipation fan 304, a heat dissipation pipe 305, an oil path 306, an oil path branch line 307, a one-way valve line 308, an oil path branch line two 309 and a one-way valve two 310.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, a transmission case body 1 is respectively communicated with an active air-cooled heat dissipation module 3 through a transmission case oil outlet pipe 2 and a transmission case oil inlet pipe 4, so that the transmission case body 1 is circularly communicated with the active air-cooled heat dissipation module 3;

the active air-cooled heat dissipation module 3 includes: the system comprises a temperature sensor 301, an electromagnetic two-position three-way reversing valve 302, a hydraulic motor 303, a cooling fan 304, a cooling pipe 305, an oil path combining circuit 306, an oil path branch I307, a one-way valve I308, an oil path branch II 309 and a one-way valve II 310; the temperature sensor 301 and the electromagnetic two-position three-way reversing valve 302 are arranged on the gearbox oil outlet pipe 2 in series, the temperature sensor 301 is used for measuring the oil temperature in the gearbox oil outlet pipe 101, and provides an electric signal to control the electromagnetic two-position three-way reversing valve 302 on the gearbox oil outlet pipe 2 according to the oil temperature in the oil outlet pipe, so that the on-off of the oil path branch I307 and the oil path branch II 309 are controlled; the electromagnetic two-position three-way reversing valve 302 is respectively connected with an oil way branch I307 and an oil way branch II 309 of the hydraulic motor 303 in parallel, the oil way branch I307 and the oil way branch II 309 are respectively connected with an oil way combining circuit 306 in parallel through a one-way valve I308 and a one-way valve II 310, the oil way combining circuit 306 is connected with one end of a radiating pipe 305, and the other end of the radiating pipe 305 is connected with an oil inlet pipe 4 of a gearbox; the hydraulic motor 303 is fixedly connected with the gearbox body 1, and the hydraulic motor 303 is connected with the cooling fan 304 and used for providing power for the cooling fan 304 to carry out active air cooling; the first check valve 308 and the second check valve 309 are positioned on the two oil way branches and used for controlling the one-way flow of oil in the oil way;

the radiating pipe 305 adopts a U-shaped pipeline, the radiating pipe 305 is connected to the tail end of an oil way, and the U-shaped pipeline is used for increasing the radiating area so as to be beneficial to radiating oil;

the transmission case body 1 comprises a liquid level meter 101, a heating device 102, an oil pool 103, a motor 104, a hydraulic pump 105 and a filter 106, wherein the oil pool 103 is fixedly connected inside, a transmission oil inlet pipe 4 is connected with the oil pool 103, an internal oil outlet pipe is connected with the hydraulic pump 105 through the heating device 102 and the filter 106, the motor 104 is connected with the hydraulic pump 105, and the hydraulic pump 105 is connected with a transmission oil outlet pipe 2 through the internal oil outlet pipe;

the liquid level meter 101 is arranged at the oil pool 103 and is used for observing the liquid level in the oil pool.

The working principle is as follows:

when the engine 5 is connected with a gearbox and starts to work, at the moment, because the temperature of engine oil in the gearbox body 1 is low, the engine oil is heated by the heating module 102 after coming out of the oil pool 103, and the engine oil in the gearbox of the vehicle is preheated, so that the vehicle can be quickly started during starting, and the oil consumption is reduced. The heated engine oil passes through the filter 106 and the oil pump 105, and is led out from the transmission outlet pipe 2 through an oil passage inside the transmission case. The temperature sensor 301 is used for measuring the oil temperature in the oil outlet pipe 2 of the gearbox, if the oil temperature is not more than 120 ℃, the temperature sensor 301 transmits an electric signal to the electromagnetic two-position three-way reversing valve 302, the second oil path branch 309 is selected, the engine oil flows to the radiating pipe 305 through the second one-way valve 310 and the oil path combining path 306, and flows quickly during the quick running process of the vehicle, so that the heat of the engine oil in the radiating pipe 305 is taken away, and the heat radiation of the engine oil is completed; if the oil temperature exceeds 120 ℃, the temperature sensor 301 transmits an electric signal to the electromagnetic two-position three-way reversing valve 302, an oil path branch 307 is selected, the engine oil has a large amount of hydraulic energy, so the engine oil can drive the hydraulic motor 303 to rotate, the hydraulic motor 303 is connected with the radiating fan 304, the hydraulic motor 303 drives the radiating fan 304 to rotate rapidly, the engine oil flows into the radiating pipe 305 through the oil path combination 306, the radiating pipe 305 performs active air-cooling radiation of the engine oil through the rapid rotation of the radiating fan 304, and a part of heat of the radiating pipe 305 can be taken away by a vehicle in the driving process, so that the radiating work of the engine oil is completed. The engine oil after heat dissipation flows into the oil pool 103 in the gearbox 1 along with the gearbox oil return pipe 4 to finish the internal lubrication, control and cooling of the gearbox 1, and the engine oil after working falls into the bottom of the oil pool and is pumped out of the oil pool 103 by the oil pump 105 to finish the next circulating cooling work.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gearbox active air-cooled lubricating device is characterized in that: the gearbox body is communicated with the active air-cooled heat dissipation module through the gearbox oil outlet pipe and the gearbox oil inlet pipe respectively, so that the gearbox body and the active air-cooled heat dissipation module are circulated Unicom.

2. A gearbox active air-cooled lubricating device according to claim 1, characterized in that: the active air-cooled heat dissipation module comprises: a temperature sensor, an electromagnetic two-position three-way reversing valve, a hydraulic motor, a cooling fan, Radiation pipe, oil circuit combined circuit, oil circuit branch circuit 1, check valve 1, oil circuit branch circuit 2, check valve 2; the temperature sensor and electromagnetic two-position three-way reversing valve are arranged in series on the transmission oil outlet pipe , The electromagnetic two-position three-way reversing valve is connected in parallel with the oil circuit branch 1 and the oil circuit branch 2 with the hydraulic motor, respectively. The oil circuit branch circuit 1 and the oil circuit branch circuit 2 pass through the check valve 1 and the check valve 2 respectively It is connected in parallel with the oil circuit combined circuit, the oil circuit combined circuit is connected with one end of the cooling pipe, and the other end of the cooling pipe is connected with the oil inlet pipe of the gearbox; the hydraulic motor is fixedly connected with the gearbox body, and the hydraulic motor is connected with the cooling fan.

3 . The active air-cooled lubricating device for a gearbox according to claim 2 , wherein the cooling pipe adopts a U-shaped pipe. 4 .

4. A gearbox active air-cooled lubricating device according to claim 1, characterized in that: the gearbox body comprises a heating device, an oil pool, a motor, a hydraulic pump, and a filter, wherein the oil pool is fixedly connected inside , The transmission oil inlet pipe is connected with the oil pool, the internal oil outlet pipe is connected with the hydraulic pump through the heating device and the filter, the motor is connected with the hydraulic pump, and the hydraulic pump is connected with the transmission oil outlet pipe through the internal oil outlet pipe.

5 . The active air-cooled lubricating device for a gearbox according to claim 4 , wherein the liquid level gauge is arranged at the oil pool. 6 .