CN219388584U - Lubricating device of speed changer - Google Patents
Lubricating device of speed changer Download PDFInfo
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- CN219388584U CN219388584U CN202320299578.6U CN202320299578U CN219388584U CN 219388584 U CN219388584 U CN 219388584U CN 202320299578 U CN202320299578 U CN 202320299578U CN 219388584 U CN219388584 U CN 219388584U
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- cooler
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Abstract
The utility model provides a lubricating arrangement of derailleur, includes derailleur, oil pump, cooler, the upstream end of oil pump is connected with the oil return opening of derailleur, and an electromagnetic directional valve sets up the downstream end at the oil pump, the oil inlet of derailleur is connected through first pipeline to electromagnetic directional valve's first export, the cooler upstream end is connected through the second pipeline to electromagnetic directional valve's second export, cooler downstream end forms the bypass that is used for forcing the cooling through third pipeline connection first pipeline, set up temperature sensor in the oil bath of derailleur, oil pump, electromagnetic directional valve, temperature sensor are connected with the controller electricity respectively.
Description
Technical Field
The utility model relates to the field of speed variators, in particular to a lubricating device of a speed changer.
Background
The transmission is a transmission device that coordinates the rotational speed of an engine and the actual running speed of wheels for the best performance of the engine. During vehicle operation, there is relative movement of some of the working parts within the transmission, which can cause heat and wear, such as mishandling, that can severely impact the service life of the transmission. Lubricating oil is added into the transmission for lubrication, so that abrasion can be effectively reduced, excessive heat is taken away, the transmission can be effectively protected, and the service life of the transmission is prolonged.
Researches show that the quantity and temperature of the lubricating oil can directly influence the transmission efficiency of the transmission, and under the condition of sufficient lubrication, the more the total oil quantity is, the lower the efficiency is; the lower the temperature, the higher the viscosity and the lower the efficiency in terms of temperature; too high a temperature can lead to thin lubricating oil and affect the lubricating effect. And the oil mass and the temperature of the lubricating oil directly influence the economy of the whole vehicle. For an oil vehicle, hundred kilometers of oil consumption is affected, and for an electric vehicle, the endurance mileage is shortened under the condition that the battery capacity is unchanged. Therefore, the optimal condition for the transmission is to control the total oil quantity and the temperature of the lubricating oil as much as possible within the optimal range under the condition of ensuring sufficient lubrication.
At present, the controllable lubrication mode of the transmission is generally forced lubrication, the forced lubrication needs to convey lubricating oil to a position of the transmission, which needs to be lubricated, to intensively lubricate parts of the transmission, and as the temperature of the lubricating oil can be increased in the working process of the transmission, the viscosity of the lubricating oil can be thin in a high-temperature state, the generation effect of an oil film on the surfaces of the parts can be reduced, the lubrication is insufficient, and a cooler is usually arranged on a lubricating oil pipeline of an existing automobile to cool the lubricating oil in the high-temperature state inside the transmission so as to ensure the optimal lubrication effect of the lubricating oil. However, because the ambient temperatures are different in each place, such as in cold regions, the ambient temperature is below zero in winter for a long time, the oil temperature in the transmission is reduced too fast after the lubricating oil is cooled by a cooler, the lubrication efficiency is reduced due to the viscosity increase caused by low temperature, and even in extremely low temperature environments, the lubricating oil cannot be smoothly conveyed to each place needing lubrication through a pipeline due to the too high viscosity of the lubricating oil, so that the abrasion of bearings and gears of the transmission is serious, and the damage of the transmission is aggravated; meanwhile, when the existing automobile is started in cold condition under low temperature weather, the engine and the transmission are usually required to be preheated, so that the heated lubricating oil can be smoothly conveyed to the positions of the automobile, which need to be lubricated, normal operation is ensured, however, the lower the temperature is, the longer the time of stirring the lubricating oil is, the longer the working time of the engine is, and the more power is lost by the engine. How to solve the problem that the lubricating oil for lubricating the transmission is not thin in a high-temperature environment and does not increase viscosity in a low-temperature environment is an object of long-term study.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides a lubrication device of a transmission, which is used for selecting different oil ways according to the oil temperature in the transmission monitored by a temperature sensor, ensuring that the lubricating oil for lubricating the transmission is in an optimal temperature state and avoiding the aggravation of the abrasion of the transmission caused by insufficient lubrication; but also can improve the oil stirring efficiency of the lubricating oil and reduce the power loss of the engine oil stirring.
The technical scheme of the utility model is as follows: the utility model provides a lubricating arrangement of derailleur, includes derailleur, oil pump, cooler, the upstream end of oil pump is connected with the oil pan of derailleur, and an electromagnetic directional valve sets up the downstream end at the oil pump, the oil inlet of derailleur is connected through first pipeline to the first export of electromagnetic directional valve, the cooler upstream end is connected through the second pipeline to the second export of electromagnetic directional valve, the cooler downstream end forms the bypass that is used for forcing the cooling through the first pipeline of third pipeline connection, set up temperature sensor in the oil sump of derailleur, oil pump, electromagnetic directional valve, temperature sensor are connected with the controller electricity respectively.
The oil pump is fixed on the transmission shell, and the downstream end of the oil pump is connected with the electromagnetic directional valve through a pipeline.
And a filter screen is arranged at an oil return port of the transmission.
The cooler is an air-cooled cooler.
The air-cooled cooler is provided with a fan.
The technical scheme is adopted: the temperature sensor is used for detecting the oil temperature in the transmission and transmitting the oil temperature information to the controller, and the controller controls the oil outlet amount of the oil pump and the switching of the first outlet and the second outlet of the electromagnetic directional valve through the oil temperature information. The temperature of the lubricating oil is kept in a state with the optimal lubricating effect by switching different oil ways and controlling the rotation speed of the oil pump, so that the lubrication of parts in the transmission is fully realized and the oil stirring loss of the transmission is reduced as much as possible.
The utility model is further described below with reference to the drawings and specific examples.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Detailed Description
Referring to fig. 1, a lubrication device of a transmission includes a transmission 6, an oil pump 51, and a cooler 7. The oil pump 51 is fixed on the casing of the speed changer 6, the upstream end of the oil pump 51 is connected with an oil return port of the speed changer 6, and the oil return port of the speed changer 6 is provided with a filter screen 62 to prevent the problems of pipeline blockage or damage to the oil pump caused by iron skids in the lubricating oil of the speed changer. An electromagnetic directional valve 52 is provided at the downstream end of the oil pump 51 and is connected to the downstream end of the oil pump 51 through a pipe. The first outlet of the electromagnetic directional valve 52 is connected with the oil inlet of the transmission 6 through the first pipeline 1. The second outlet of the electromagnetic directional valve 52 is connected with the upstream end of the cooler 7 through the second pipeline 2, and the downstream end of the cooler 7 is connected with the first pipeline 1 through the third pipeline 3 to form a bypass for forced cooling. The cooler 7 is an air-cooled cooler, and a fan is installed on the air-cooled cooler. A temperature sensor 61 is provided in an oil sump 63 of the transmission 6 for detecting the oil temperature of the lubricating oil in the transmission 6. The oil pump 51, the electromagnetic directional valve 52, and the temperature sensor 61 are electrically connected to the controller 5, respectively, and the controller 5 controls the rotation speed of the motor of the oil pump 51 based on the set temperature threshold and the detection value of the temperature sensor, and controls the opening and closing of the first and second outlets of the electromagnetic directional valve 52 by controlling the electromagnetic switch of the electromagnetic directional valve 52. The controller 5 is a controller of a transmission motor or a whole vehicle controller.
When the lubrication device of the transmission works, the temperature sensor detects the oil temperature in the transmission in real time and transmits the oil temperature information to the controller, and the controller controls the rotating speed of the oil pump motor and switches the first outlet and the second outlet of the electromagnetic directional valve according to the oil temperature information and the set temperature threshold value, so that the temperature of the lubrication oil and the total oil quantity are ensured to be in the most proper range. When the oil temperature of the lubricating oil is lower than the lower limit value of the temperature threshold value set by the controller, the controller turns on an electromagnetic switch of a first outlet of the electromagnetic reversing valve, the motor speed of the oil pump is normal, the lubricating oil flows back to the transmission through an oil way of a first pipeline by the oil pump, and does not pass through the oil way provided with a cooler, so that the problem that the transmission is damaged due to insufficient lubrication of the transmission caused by poor lubrication effect due to low-temperature viscosity or blockage of an oil way is prevented, meanwhile, the condition that excessive oil temperature is not lost by the lubricating oil or excessive oil quantity is supplied to a lubricating part is ensured, the oil stirring time of an automobile can be shortened, and the loss of engine efficiency is reduced; when the temperature of the lubricating oil is within the temperature threshold value range, the controller turns off the switch of the first outlet, turns on the switch of the second outlet, the motor speed of the oil pump maintains the normal speed, the lubricating oil passes through the second pipeline, the cooler and the third pipeline in sequence through the oil pump, forcibly cools down and then flows back into the transmission, cooling of high-temperature lubricating oil is completed, and the problem that the lubricating effect is poor due to the fact that the lubricating oil temperature becomes thin due to too high temperature of the lubricating oil is prevented; when the temperature of the lubricating oil is higher than the upper limit value of the temperature threshold value, the controller closes the switch of the first outlet, controls the rotation speed of the oil pump motor to increase while opening the switch of the second outlet, so that the lubricating oil in a high temperature state is more cooled through the bypass provided with the cooler, the lubricating oil is rapidly cooled, the phenomenon that the lubricating oil is not cooled timely, the lubricating effect is poor and the parts such as bearings and gears in the transmission are damaged is avoided, when the temperature of the lubricating oil is cooled to be lower than the lower limit value of the temperature threshold value, the controller controls the oil pump motor to decelerate, the cooling of the lubricating oil is slowed down, and the phenomenon that the lubricating oil loses the optimal lubricating effect due to excessive cooling of the lubricating oil is avoided. The value of the threshold range of the temperature is obtained according to the experimental result of a specific vehicle, the lower limit value of the temperature threshold is 60-70 degrees, and the upper limit value is 90-110 degrees.
According to the lubricating device of the transmission, the temperature sensor is used for detecting the oil temperature in the transmission and transmitting the oil temperature information to the controller, and the controller controls the oil outlet amount of the oil pump and the switching of the first outlet and the second outlet of the electromagnetic directional valve through the oil temperature information. The temperature of the lubricating oil always kept at the optimal lubricating effect is ensured by switching different oil ways, so that the lubricating oil for lubricating the transmission is not rarefied in a high-temperature environment and the viscosity is not increased in a low-temperature environment, and the full lubrication of parts in the transmission in different external environments is realized; meanwhile, the oil way is switched, so that the oil stirring time of the automobile is shortened, and the power loss of the engine is reduced. The lubricating device of the transmission is suitable for high-temperature environments and low-temperature environments, is also suitable for areas with large temperature differences, and has good economic characteristics.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the utility model, and those skilled in the art will appreciate that the modifications made to the utility model fall within the scope of the utility model without departing from the spirit of the utility model.
Claims (5)
1. The utility model provides a lubricating arrangement of derailleur, includes derailleur (6), oil pump (51), cooler (7), its characterized in that: the oil return port of oil pump (51) is connected with the oil return port of derailleur (6), and an electromagnetic directional valve (52) sets up the downstream end at oil pump (51), the oil inlet of derailleur (6) is connected through first pipeline (1) to the first export of electromagnetic directional valve (52), the second export of electromagnetic directional valve (52) is connected cooler (7) upstream end through second pipeline (2), cooler (7) downstream end is connected first pipeline (1) through third pipeline (3) and is used for forcing the bypass of cooling down, set up temperature sensor (61) in oil sump (63) of derailleur (6), oil pump (51), electromagnetic directional valve (52), temperature sensor (61) are connected with controller (5) electricity respectively.
2. A lubrication device of a transmission according to claim 1, wherein: the oil pump (51) is fixed on the shell of the transmission (6), and the downstream end of the oil pump (51) is connected with the reversing valve (52) through a pipeline.
3. A lubrication device of a transmission according to claim 1, wherein: an oil return port of the transmission (6) is provided with a filter screen (62).
4. A lubrication device of a transmission according to claim 1, wherein: the cooler (7) is an air-cooled cooler.
5. The lubrication device of a transmission according to claim 4, wherein: the air-cooled cooler is provided with a fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320299578.6U CN219388584U (en) | 2023-02-23 | 2023-02-23 | Lubricating device of speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320299578.6U CN219388584U (en) | 2023-02-23 | 2023-02-23 | Lubricating device of speed changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219388584U true CN219388584U (en) | 2023-07-21 |
Family
ID=87197427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320299578.6U Active CN219388584U (en) | 2023-02-23 | 2023-02-23 | Lubricating device of speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219388584U (en) |
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2023
- 2023-02-23 CN CN202320299578.6U patent/CN219388584U/en active Active
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