CN111442082A - Active lubrication method for reduction gearbox - Google Patents
Active lubrication method for reduction gearbox Download PDFInfo
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- CN111442082A CN111442082A CN202010356528.8A CN202010356528A CN111442082A CN 111442082 A CN111442082 A CN 111442082A CN 202010356528 A CN202010356528 A CN 202010356528A CN 111442082 A CN111442082 A CN 111442082A
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- Prior art keywords
- oil
- reduction gearbox
- motor
- rotating speed
- gear pump
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- 238000005461 lubrication Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000007921 spray Substances 0.000 claims abstract description 28
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 123
- 239000010687 lubricating oil Substances 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 12
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 4
- 210000003205 muscle Anatomy 0.000 description 4
- 238000003756 stirring Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0456—Lubrication by injection; Injection nozzles or tubes therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0402—Cleaning of lubricants, e.g. filters or magnets
- F16H57/0404—Lubricant filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0436—Pumps
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a reduction gearbox active lubrication method, which is based on an electronic oil pump, wherein the electronic oil pump comprises a motor, a gear pump and a controller, the motor is connected with the gear pump, the controller is respectively connected with the motor and an automobile CAN bus, the controller obtains the rotating speed of a driving motor through the CAN bus and controls the rotating speed of the motor, and the motor controls the gear pump to spray oil through an oil nozzle connected with the gear pump; by adopting the active lubrication mode, the problem that the low-speed and ultrahigh-speed lubrication effects of the reduction gearbox are not ideal is solved, the reliability and the durability of the reduction gearbox can be effectively improved, the service life of the reduction gearbox is prolonged, the filling amount of lubricating oil of the reduction gearbox can be reduced, the user cost is saved, the lubricating oil is directly and accurately injected onto the gear and the gear shaft which need to be lubricated through the oil nozzle, the design difficulty can be reduced, and the design does not need to be repeatedly modified according to the position of the oil guide rib.
Description
Technical Field
The invention belongs to the technical field of reduction boxes, and particularly relates to an active lubrication method for a reduction box.
Background
The new energy reduction gearbox is a power transmission device which is standard for new energy, and achieves the purpose of driving the whole vehicle by reducing the speed and increasing the torque of the power output of a driving motor.
At present, splash lubrication is generally adopted for a new energy reduction gearbox, and the splash lubrication is a passive lubrication mode. The user can add a certain amount of lubricating oil in advance and get into the reducing gear box, then stirs lubricating oil through the gear rotation of reducing gear box and gets rid of, lubricates gear and gear shaft through this kind of lubricating oil mode of splashing, and this kind of mode generally needs to increase on the reducing gear box casing and leads the oil bar to guide lubricating oil flow direction specific position, and this kind of lubrication mode has several shortcomings: firstly, the filling amount of lubricating oil of the reduction gearbox is large, and if the filling amount of the lubricating oil is small, the lubricating effect cannot be achieved, so that the user cost is undoubtedly increased, and the transmission efficiency of the reduction gearbox is reduced along with the increase of the filling amount of the lubricating oil; secondly, the effect of the lubricating mode is not particularly ideal when the motor runs at low speed, and because the lubricating oil cannot be fully swung when the rotating speed of the gear is low, the oil guide rib is required to be accurately designed by adopting the lubricating mode, the design of the oil guide rib is required to be repeatedly changed through the analysis of the actual lubricating test effect, and the design difficulty is increased; the fourth lubrication method has a limited lubrication effect and often cannot meet the lubrication requirement of the ultra-high speed rotation of the gear.
In the prior art, the related active lubrication technical content of a reduction gearbox is searched, and the patent name is 'an electrically-driven reduction gearbox forced lubrication system based on variable pump oil supply', the patent mentions that forced lubrication is carried out through a variable pump, but the power of the rotation of the variable pump comes from the rotation of the gear of the reduction gearbox, the rotating speed is consistent with the gear of the reduction gearbox, the power transmitted by the reduction gearbox is consumed, the transmission efficiency is influenced, and the problem that the rotating direction of the variable pump is consistent with the reduction gearbox can be solved only by combining with the use of a reversing valve.
Disclosure of Invention
The invention aims to provide an active lubrication method for a reduction gearbox, which solves the problems of poor splash lubrication effect in a passive lubrication process, and mainly comprises the problems that the amount of splashed oil is small in a low-speed process and cannot meet the lubrication requirement, and the amount of splashed oil is limited in a high-speed process and cannot meet the lubrication requirement.
The technical scheme adopted for solving the problems in the prior art is as follows:
the active lubrication method of the reduction gearbox is provided, based on an electronic oil pump, the electronic oil pump comprises a motor, a gear pump and a controller, the motor is connected with the gear pump, the controller is respectively connected with the motor and an automobile CAN bus, the controller obtains the rotating speed of a driving motor through the CAN bus and controls the rotating speed of the motor, and the motor controls the gear pump to spray oil through an oil nozzle connected with the gear pump;
when the controller detects that the rotating speed of the driving motor is smaller than a set threshold value, the controller controls the rotating speed of the motor and controls the gear pump to spray oil through the oil spray nozzle, the rotating speed of the motor is inversely proportional to the rotating speed of the driving motor, and the rotating speed of the motor is directly proportional to the oil spray quantity of the oil spray nozzle controlled by the gear pump;
when the controller detects that the rotating speed of the driving motor is greater than a second set threshold value, the controller controls the rotating speed of the motor and controls the gear pump to spray oil through the oil spray nozzle, the rotating speed of the motor is in direct proportion to the rotating speed of the driving motor, and the rotating speed of the motor is in direct proportion to the oil spray quantity of the oil spray nozzle controlled by the gear pump; and the first threshold value and the second threshold value are actually calibrated according to the working condition of the reduction gearbox.
Furthermore, the electronic oil pump is arranged on the outer wall of the reduction gearbox, is connected with the suction filter through an oil inlet pipe and is connected with the oil nozzle through an oil outlet pipe, and the oil inlet pipe and the oil outlet pipe are arranged on the outer wall of the reduction gearbox; the suction filter is arranged inside the reduction gearbox; the oil nozzle is arranged inside the reduction gearbox.
Further, the oil nozzle structure comprises a wedge-shaped shell, an oil inlet, an oil injection channel and an oil outlet, wherein the oil inlet, the oil injection channel and the oil outlet are arranged on the wedge-shaped shell, and the cross section of the oil outlet is circular; the lubricating oil is sprayed out from the oil outlet and takes the shape of a water column, and can be used for fixed point lubrication.
Furthermore, in order to ensure the oil injection quantity of the oil injection nozzle, another oil injection nozzle structure is provided, the oil injection nozzle structure comprises a wedge-shaped shell, an oil inlet, an oil injection pipeline and an oil outlet, wherein the oil inlet, the oil injection pipeline and the oil outlet are arranged on the wedge-shaped shell, the section of the oil outlet is rectangular, and the oil injection pipeline is branched towards two sides in the wedge-shaped shell to form two oil outlets; the lubricating oil is sprayed out from two oil outlets with rectangular sections to form an umbrella shape, and can be used for large-area lubrication.
Further, still include the filter screen, the filter screen sets up on the suction filter.
Specifically, the suction filter is arranged at the bottom of the reduction box body and used for better sucking lubricating oil at the bottom of the reduction box body.
Further, the oil inlet pipe and the oil outlet pipe are arranged through hoses, and the hoses can be conveniently and simply arranged on the reduction gearbox.
Specifically, the oil inlet pipe and the oil outlet pipe are tightly arranged around the outer wall of the reduction gearbox and fixed through metal buckles.
Specifically, the oil nozzle is arranged on the upper portion of the reduction gearbox, and the specific positions are arranged according to the positions and the number of gears in the reduction gearbox, so that the fact that the gears and the gear shaft can fully receive oil-liquid lubrication sprayed by the oil nozzle can be guaranteed.
The beneficial effects are as follows:
1. by adopting the active lubrication mode, the problems of poor low-speed and ultrahigh-speed lubrication effects of the reduction gearbox are solved, the reliability and durability of the reduction gearbox can be effectively improved, and the service life of the reduction gearbox is prolonged.
2. The filling amount of the lubricating oil of the reduction gearbox can be reduced, the user cost is saved, the oil amount required to be filled by adopting the active lubrication is half of the oil amount required by the original splash lubrication, the efficiency loss caused by the oil stirring of the original reduction gearbox is reduced, and the transmission efficiency of the reduction gearbox is improved.
3. Adopt this kind of lubricated mode can not need to carry out the design of leading the oil muscle because the fuel sprayer is direct accurate injection to need lubricated gear and gear shaft on, just so can reduce the design degree of difficulty, need not modify the design to the position of leading the oil muscle repeatedly.
Drawings
FIG. 1 is a schematic view of the structure of an active lubrication oil path in embodiment 1;
FIG. 2 is a graph showing the variation of the rotational speed of the driving motor and the rotational speed of the gear pump in accordance with example 1;
FIG. 3 is a schematic view of the active lubrication structure of the reduction gearbox in the embodiment 1;
FIG. 4 is a schematic view showing the installation of an oil inlet pipe and an oil outlet pipe of the reduction gearbox in the embodiment 1;
FIG. 5 is a schematic view of the structure of an oil jet nozzle in accordance with embodiment 1;
fig. 6 is a schematic structural view of the oil jet nozzle in embodiment 2.
Detailed Description
The present invention will be further described with reference to the following embodiments.
Example 1
As shown in fig. 1 and 3, the present embodiment provides a reduction gearbox active lubrication method, based on an electronic oil pump 1, the electronic oil pump 1 includes a motor 10, a gear pump 11 and a controller 12, the motor 10 is connected to the gear pump 11, the controller 12 is connected to the motor 10 and an automobile CAN bus respectively, the controller 12 obtains a rotation speed of a driving motor through the CAN bus and controls the rotation speed of the motor 10, and the motor 10 controls the gear pump 11 to inject oil through an oil nozzle 2 connected to the gear pump 11; the gear pump 11 may be an external gear pump or an internal gear pump, which is an external gear pump in this embodiment; the motor 10 may be a brush motor or a brushless motor.
When the controller 12 detects that the rotating speed of the driving motor is less than a set threshold value A, the controller 12 controls the rotating speed of the motor 10 and controls the gear pump 11 to spray oil through the oil spray nozzle 2 by the motor 10, wherein the rotating speed of the motor 10 is inversely proportional to the rotating speed of the driving motor and is directly proportional to the oil spray quantity of the oil spray nozzle 2 controlled by the gear pump 11;
when the controller 12 detects that the rotating speed of the driving motor is greater than a set threshold value II B, the controller 12 controls the rotating speed of the motor 10 and controls the gear pump 11 to spray oil through the oil spray nozzle 2 by the motor 10, wherein the rotating speed of the motor 10 is in direct proportion to the rotating speed of the driving motor and is in direct proportion to the oil spray quantity of the oil spray nozzle 2 controlled by the gear pump 11;
and the first threshold A and the second threshold B are actually calibrated according to the working condition of the reduction gearbox 3.
Specifically, the method of this embodiment includes the following steps: when the rotational speed that driving motor input to reducing gear box 3 is lower, reducing gear box 3 splashes lubricated effect poor, and driving motor's rotational speed is gathered to controller 12, and the rotational speed increase of control motor 10 to drive 11 rotational speed increases of gear pump, the flow increase that lubricating oil inhales gear pump 11 from suction filter 4 of reducing gear box 3 bottom, lead to the oil mass grow of exporting each fuel sprayer 2 from gear pump 11, lubricated effect becomes good.
When the rotating speed input by the driving motor to the reduction gearbox 3 is increased, the splashing lubrication effect of the speed reducer is improved, the rotating speed of the driving motor is collected by the controller 12, and the rotating speed of the control motor 10 is reduced, so that the rotating speed of the gear pump 11 is reduced, the flow of lubricating oil sucked into the gear pump 11 from the suction filter 4 at the bottom of the reduction gearbox 3 is reduced, the oil output from the gear pump 11 to each oil nozzle 2 is reduced, and only the splashing lubrication is supplemented.
When the rotating speed input to the reduction gearbox 3 by the driving motor exceeds a set rotating speed level, the splashing lubrication effect of the reduction gearbox 3 is limited, the controller 12 collects the rotating speed of the driving motor, the rotating speed of the control motor 10 is increased, so that the rotating speed of the gear pump 11 is increased, the flow of lubricating oil sucked into the gear pump 11 from the suction filter 4 at the bottom of the reduction gearbox 3 is increased, the oil quantity output from the gear pump 11 to each oil nozzle 2 is increased, and the lubrication effect is enhanced.
As shown in fig. 3 and 4, the electronic oil pump 1 is arranged on the outer wall of the reduction gearbox 3, is connected with the suction filter 4 through an oil inlet pipe 5, and is connected with the oil nozzle 2 through an oil outlet pipe 6.
The oil inlet pipe 5 and the oil outlet pipe 6 are arranged on the outer wall of the reduction gearbox 3, in the embodiment, the oil inlet pipe 5 and the oil outlet pipe 6 are arranged by adopting hoses, and the hoses can be conveniently and simply arranged in the deceleration direction; the oil inlet pipe 5 and the oil outlet pipe 6 are closely arranged around the outer wall of the reduction gearbox 3 and are fixed through a metal buckle 8.
The suction filter 4 is arranged inside the reduction gearbox 3, and in the embodiment, the suction filter 4 is arranged at the bottom of the reduction gearbox 3 and is used for better sucking lubricating oil at the bottom of the reduction gearbox 3; a filter screen, not shown in this embodiment, is also included, which is arranged on the suction filter 4.
The oil nozzle 2 is arranged inside the reduction gearbox 3, in the embodiment, the oil nozzle 2 is arranged on the upper portion of the reduction gearbox 3, the specific position is arranged according to the position and the number of the gear 7 in the reduction gearbox, the oil nozzle can be fully received by each gear 7 and the gear shaft to spray oil for lubrication, and the number of the gears 7 is 3 in the embodiment.
As shown in fig. 4, the oil nozzle 2 structurally comprises a wedge-shaped housing, and an oil inlet 20, an oil injection channel 21 and an oil outlet 22 with a circular cross section which are arranged on the wedge-shaped housing, wherein lubricating oil is sprayed out from the oil outlet 22 in a water column shape and can be used for fixed point lubrication.
In the embodiment, the active lubrication mode is adopted, so that the problem that the low-speed and ultrahigh-speed lubrication effects of the reduction gearbox 3 are not ideal is solved, the reliability and durability of the reduction gearbox 3 can be effectively improved, and the service life of the reduction gearbox is prolonged; the filling amount of lubricating oil of the reduction gearbox 3 can be reduced, the user cost is saved, the oil amount required to be filled by adopting the active lubrication is half of the oil amount required by the original splash lubrication, the efficiency loss caused by oil stirring of the original reduction gearbox is reduced, and the transmission efficiency of the reduction gearbox is improved; adopt this kind of lubricated mode can not need to carry out the design of leading the oil muscle because oil nozzle 2 is on direct accurate injection need lubricated gear and gear shaft, just so can reduce the design degree of difficulty, need not modify the design to the position of leading the oil muscle repeatedly.
Example 2
As shown in fig. 5, the present embodiment is different from embodiment 1 in that, in order to ensure the oil injection amount of the oil injection nozzle 2, the present embodiment provides another oil injection nozzle structure, the oil injection nozzle 2 structure includes a wedge-shaped housing, and an oil inlet 23, an oil injection pipe 24 and an oil outlet 25 with a rectangular cross section which are arranged on the wedge-shaped housing, and the oil injection pipe 24 is bifurcated towards two sides in the wedge-shaped housing to form two oil outlets 250 and 251.
In this embodiment, the two oil outlets 250 and 251 are used for large-area lubrication, and the lubricating oil is ejected from the two oil outlets 250 and 251 having a rectangular cross section in an umbrella shape.
It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection of the claims of the present invention.
Claims (9)
1. The active lubrication method of the reduction gearbox is characterized in that based on an electronic oil pump, the electronic oil pump comprises a motor, a gear pump and a controller, the motor is connected with the gear pump, the controller is respectively connected with the motor and an automobile CAN bus, the controller obtains the rotating speed of a driving motor through the CAN bus and controls the rotating speed of the motor, and the motor controls the gear pump to spray oil through an oil nozzle connected with the gear pump;
when the controller detects that the rotating speed of the driving motor is smaller than a set threshold value, the controller controls the rotating speed of the motor and controls the gear pump to spray oil through the oil spray nozzle, the rotating speed of the motor is inversely proportional to the rotating speed of the driving motor, and the rotating speed of the motor is directly proportional to the oil spray quantity of the oil spray nozzle controlled by the gear pump;
when the controller detects that the rotating speed of the driving motor is greater than a second set threshold value, the controller controls the rotating speed of the motor and controls the gear pump to spray oil through the oil spray nozzle, and the rotating speed of the motor is in direct proportion to the rotating speed of the driving motor and in direct proportion to the oil spray quantity of the oil spray nozzle controlled by the gear pump.
2. The active lubrication method for the reduction gearbox according to claim 1, wherein the electronic oil pump is arranged on the outer wall of the reduction gearbox, is connected with a suction filter through an oil inlet pipe and is connected with an oil nozzle through an oil outlet pipe, and the oil inlet pipe and the oil outlet pipe are arranged on the outer wall of the reduction gearbox; the suction filter is arranged inside the reduction gearbox; the oil nozzle is arranged inside the reduction gearbox.
3. The active lubrication method for the reduction gearbox according to claim 1, wherein the oil nozzle structure comprises a wedge-shaped shell, and an oil inlet, an oil injection channel and an oil outlet with a circular cross section are arranged on the wedge-shaped shell.
4. The active lubrication method for the reduction gearbox according to claim 1, wherein the oil nozzle structure comprises a wedge-shaped shell, and an oil inlet, an oil injection pipeline and an oil outlet with a rectangular cross section, which are arranged on the wedge-shaped shell, and the oil injection pipeline is branched towards two sides in the wedge-shaped shell to form two oil outlets.
5. The active lubrication method for the reduction gearbox according to claim 2, further comprising a filter screen, wherein the filter screen is arranged on a suction filter.
6. The active lubrication method for the reduction gearbox according to claim 2, wherein the suction filter is arranged at the bottom of the reduction gearbox body.
7. The active lubrication method for the reduction gearbox according to claim 2, wherein the oil inlet pipe and the oil outlet pipe are arranged by adopting flexible pipes.
8. The active lubrication method for the reduction gearbox according to claim 2, wherein the oil inlet pipe and the oil outlet pipe are closely arranged around the outer wall of the reduction gearbox and are fixed through metal buttons.
9. The active lubrication method for the reduction gearbox according to claim 2, wherein the oil nozzle is arranged at the upper part of the reduction gearbox.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010356528.8A CN111442082A (en) | 2020-04-29 | 2020-04-29 | Active lubrication method for reduction gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010356528.8A CN111442082A (en) | 2020-04-29 | 2020-04-29 | Active lubrication method for reduction gearbox |
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| Publication Number | Publication Date |
|---|---|
| CN111442082A true CN111442082A (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010356528.8A Pending CN111442082A (en) | 2020-04-29 | 2020-04-29 | Active lubrication method for reduction gearbox |
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| CN (1) | CN111442082A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112747851A (en) * | 2020-12-23 | 2021-05-04 | 西安交通大学 | Spiral bevel gear oil stirring loss testing device and method |
| WO2022110060A1 (en) * | 2020-11-27 | 2022-06-02 | 华为数字能源技术有限公司 | Transmission, vehicle power assembly, and vehicle |
| WO2022141242A1 (en) * | 2020-12-30 | 2022-07-07 | 华为数字能源技术有限公司 | Control method and device |
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| DE102005013657A1 (en) * | 2005-03-24 | 2006-09-28 | Volkswagen Ag | Gearwheel drive for motor vehicles has controlled oil supply by using transmission sensors for determining operating parameters for effective volume flow |
| CN103266929A (en) * | 2013-04-29 | 2013-08-28 | 东风朝阳朝柴动力有限公司 | Drive sprocket lubricating and cooling device |
| CN203322228U (en) * | 2013-06-01 | 2013-12-04 | 比亚迪股份有限公司 | Oil-spraying lubrication system of transmission |
| CN106838277A (en) * | 2017-03-15 | 2017-06-13 | 江苏赫夫特齿轮制造有限公司 | Self-circulation lubricating metallurgy reductor |
| CN111006004A (en) * | 2019-12-03 | 2020-04-14 | 东风格特拉克汽车变速箱有限公司 | Electric drive reducing gear box force-feed lubrication system based on variable pump oil supply |
-
2020
- 2020-04-29 CN CN202010356528.8A patent/CN111442082A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005013657A1 (en) * | 2005-03-24 | 2006-09-28 | Volkswagen Ag | Gearwheel drive for motor vehicles has controlled oil supply by using transmission sensors for determining operating parameters for effective volume flow |
| CN103266929A (en) * | 2013-04-29 | 2013-08-28 | 东风朝阳朝柴动力有限公司 | Drive sprocket lubricating and cooling device |
| CN203322228U (en) * | 2013-06-01 | 2013-12-04 | 比亚迪股份有限公司 | Oil-spraying lubrication system of transmission |
| CN106838277A (en) * | 2017-03-15 | 2017-06-13 | 江苏赫夫特齿轮制造有限公司 | Self-circulation lubricating metallurgy reductor |
| CN111006004A (en) * | 2019-12-03 | 2020-04-14 | 东风格特拉克汽车变速箱有限公司 | Electric drive reducing gear box force-feed lubrication system based on variable pump oil supply |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022110060A1 (en) * | 2020-11-27 | 2022-06-02 | 华为数字能源技术有限公司 | Transmission, vehicle power assembly, and vehicle |
| CN112747851A (en) * | 2020-12-23 | 2021-05-04 | 西安交通大学 | Spiral bevel gear oil stirring loss testing device and method |
| CN112747851B (en) * | 2020-12-23 | 2022-02-11 | 西安交通大学 | Spiral bevel gear oil stirring loss testing device and method |
| WO2022141242A1 (en) * | 2020-12-30 | 2022-07-07 | 华为数字能源技术有限公司 | Control method and device |
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Application publication date: 20200724 |
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