CN221196033U - Electric driving planetary reduction gearbox power device - Google Patents

Abstract

The application provides an electric drive planetary reduction gearbox power device, which relates to the field of electric devices and comprises an electric control box, a driving motor, a front side end cover, a rear side box shell, a planetary motion assembly and a ventilation cap. The electric control box is arranged on the shell of the driving motor, is electrically connected with the driving motor and is used for controlling the working state of the driving motor; the shell is arranged on the front end cover; the front side end cover is connected with the rear side case shell and is matched with the rear side case shell to form a lubricating cavity and a second cavity which are mutually independent, and the first cavity is communicated with the lubricating cavity and the second cavity at the same time; the front side oil collecting cavity is communicated with the lubricating cavity and is used for temporarily storing lubricating oil and conveying the lubricating oil to the front bearing seat; the planetary motion assembly is arranged in the lubrication cavity, and an output shaft of the driving motor is in transmission connection with the planetary motion assembly; the ventilation cap is arranged on the front end cover and is communicated with the second cavity. The power device has good lubrication effect on internal parts in the running process and long service life.

Description

Electric driving planetary reduction gearbox power device

Technical Field

The utility model relates to the field of electric devices, in particular to an electric drive planetary reduction gearbox power device.

Background

At present, the inside of an electric automobile planetary gear box depends on an oil guide rib and an oil guide groove to guide lubricating oil to the upper part of a bearing seat, so that the bearing arranged at the bearing seat is lubricated by the lubricating oil. In addition, because the peak rotating speed of the planetary gear box is higher, when the gear runs at a high speed, a high-temperature and high-pressure oil-gas mixture is formed in the box body of the gear box, and flows towards the ventilation cap under the action of pressure, and oil-gas separation is realized by means of the ventilation cap. As the planetary gear box is in operation, multidirectional vehicle inclination conditions exist. When the inclination angle of the gear box is too large, the oil guiding angle of the conventional oil guiding structure with certain inclination angles is too low, the oil guiding lubrication function is seriously weakened or even lost, poor lubrication or even ablation damage of corresponding transmission parts is caused, the failure rate of the gear box is high, and the stability and reliability of the gear box are reduced.

Disclosure of utility model

The utility model aims to provide an electric drive planetary reduction gearbox power device which can effectively lubricate a transmission part in a gearbox under the condition that the gearbox is in a large-angle inclined state, so that the running stability and reliability of the gearbox are improved; the oil-gas separation effect can be improved, and the oil leakage condition at the position of the ventilation cap can be improved.

Embodiments of the present utility model are implemented as follows:

in a first aspect, the present utility model provides an electrically driven planetary reduction gearbox power plant comprising:

The planetary motion device comprises an electric cabinet, a driving motor, a front side end cover, a rear side case, a planetary motion assembly and an air permeable cap;

The electric control box is arranged on the shell of the driving motor, is electrically connected with the driving motor and is used for controlling the working state of the driving motor; the shell is arranged on the front side end cover; the front side end cover is connected with the rear side case shell and is matched with the rear side case shell to form a lubricating cavity and a second cavity which are mutually independent, and the first cavity is communicated with the lubricating cavity and the second cavity at the same time; the front side oil collecting cavity is communicated with the lubricating cavity and is used for temporarily storing lubricating oil and conveying the lubricating oil to the front bearing seat; the planetary motion assembly is arranged in the lubrication cavity, and an output shaft of the driving motor is in transmission connection with the planetary motion assembly; the ventilation cap is arranged on the front side end cover and is communicated with the second cavity.

In an alternative embodiment, the front end cover comprises an end cover main body and a front oil collecting piece, wherein a first groove and a second groove are formed on the inner side surface of the end cover main body; the front oil collecting piece is connected with the inner side surface, and the notches of the first groove and the second groove are closed, so that the first groove forms the first chamber, the second groove forms an oil gas inlet channel, one end of the oil gas inlet channel is communicated with the first groove, and the other end of the oil gas inlet channel is communicated with the lubrication cavity;

The end cover main body is matched with the rear side case shell to form the lubrication cavity and the second cavity, and the front side oil collecting piece is positioned in the lubrication cavity.

In an alternative embodiment, the second groove is configured as a gradual groove, and the groove width of the second groove gradually increases in a direction from one end of the second groove near the first groove to the other end.

In an alternative embodiment, the front oil collecting cavity is formed on the side of the front oil collecting piece, which is away from the first groove.

In an alternative embodiment, two oil baffles are integrally formed on the inner side surface of the end cover main body, the two oil baffles are respectively positioned at two sides of the first groove in the circumferential direction of the end cover main body, and the front oil collecting piece is embedded between the two oil baffles; each oil baffle plate is used for separating an oil-gas mixture.

In an alternative embodiment, a third groove is provided on the annular end surface of the rear side case, the front side end cover is abutted with the annular end surface and seals the notch of the third groove, and the front side end cover is matched with the rear side case to form the second chamber at the third groove.

In an alternative embodiment, the front end cover is provided with a communication hole, the communication hole has a first end communicated with the first chamber and a second end communicated with the second chamber, the first end and the second end have a distance in the extending direction of the rotation axis of the planetary motion assembly, and the height of the first end is lower than that of the second end.

In an alternative embodiment, the electric drive planetary reduction gearbox power device further comprises a rear oil baffle plate, wherein the rear oil baffle plate is arranged on the inner side surface of the rear gearbox shell facing the front end cover, and a space is arranged between the rear oil baffle plate and the inner side surface of the rear gearbox shell so as to form an oil storage area; the bottom edge of rear side oil baffle is provided with the oil groove that communicates oil storage region and lubrication chamber.

In an alternative embodiment, the rear oil baffle comprises an inner ring plate, an arc-shaped guide plate and an outer ring plate which are integrally structured, wherein the outer side of the inner ring plate is connected with the inner concave surface of the arc-shaped guide plate, the outer convex surface of the arc-shaped guide plate is connected with the outer ring plate, the inner ring plate is fixed on the inner side surface of the rear side case, and the outer ring plate is spaced from the inner side surface of the rear side case; the arc guide plate protrudes from the inner ring plate and the outer ring plate in a direction from the rear side case toward the front side end cover.

In an alternative embodiment, a plurality of guide strips are arranged on the inner concave surface of the arc-shaped guide plate, and the guide strips are arranged at intervals in the circumferential direction of the arc-shaped guide plate.

The embodiment of the utility model has the beneficial effects that:

In the electric drive planetary reduction gearbox power device provided by the embodiment, after the electric control box is electrified in the normal running process of the gearbox, the driving motor can be controlled, and the working state of the driving motor can be regulated, for example, the starting and stopping, the rotating speed, the rotating direction and the like of the driving motor can be regulated. And after the driving motor rotates, the planetary motion assembly inside the gear box is driven to move, and lubricating oil is stirred in the motion process of the planetary motion assembly, so that the lubricating oil can be conveyed to various positions to realize a lubricating effect. And in the motion process of the lubricating oil, part of the lubricating oil can be collected by the front oil collecting cavity, and the part of the lubricating oil can not directly reach the front bearing seat to participate in lubrication, but can be temporarily stored in the front oil collecting cavity, and then flows from the front oil collecting cavity to the front bearing seat to lubricate the bearing. Therefore, when the gear box is in a tilting state with a large angle, lubricating oil cannot reach the upper part of the front bearing seat in a stirring manner of the transmission part, so that the bearing at the front bearing seat cannot be effectively lubricated, at the moment, the lubricating oil temporarily stored in the front oil collecting cavity can be discharged and reach the front bearing seat, so that the bearing is effectively lubricated, the bearing is not easy to be ablated and damaged, and the operation reliability of the gear box is high. Simultaneously, the inside oil gas mixture of lubrication chamber is before reacing the ventilative cap, and through first cavity and second cavity in proper order, carries out a lot of oil-gas separation under the cooperation of first cavity and second cavity, has effectively improved the separation effect of oil gas mixture for the load of ventilative cap department is little, and the difficult condition of seepage oil leak of ventilative cap department appears. The first cavity and the second cavity are formed by utilizing the inner spaces of the front end cover and the rear side box shell, so that the whole structure is compact, the size is small, redundant structural members do not need to be additionally arranged, the processing and the manufacturing are convenient, and the cost is low.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of a part of a power plant of an electrically driven planetary reduction gearbox according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of a portion of the structure of an electrically driven planetary reduction gearbox power plant according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of a part of the structure of an electrically driven planetary reduction gearbox power unit according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a front end cover according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a front end cap from another perspective according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a front side oil collector according to an embodiment of the present utility model;

FIG. 7 is a schematic cross-sectional view of a front-side oil catcher according to an embodiment of the present utility model;

FIG. 8 is a schematic view of the structure of a rear side case according to an embodiment of the present utility model;

FIG. 9 is a schematic cross-sectional view of a rear side cabinet according to an embodiment of the utility model;

FIG. 10 is a schematic diagram of a power plant of an electrically driven planetary reduction gearbox according to an embodiment of the present utility model;

FIG. 11 is a schematic cross-sectional view of an electrically driven planetary reduction gearbox power plant according to an embodiment of the present utility model;

FIG. 12 is a schematic view of a rear oil baffle according to an embodiment of the present utility model;

fig. 13 is a schematic cross-sectional view of a rear oil baffle according to an embodiment of the present utility model.

Icon:

001-a first chamber; 002-front side oil collection cavity; 003-lubrication chamber; 004-a second chamber; 005-oil gas entering the channel; 006-front bearing block; 007-rear bearing block; 071-fourth groove; 008-rear oil collection cavity; 100-front side end cap; 110-an end cap body; 111-a first groove; 112-a second groove; 113-a communication hole; 1131-a first end; 1132-a second end; 120-front side oil collector; 121-mounting side plates; 1211-a fixation hole; 1212-oil guiding inclined plane; 122-an oil baffle side plate; 1221-a avoidance slot; 123-a bottom plate; 1231-oil outlet holes; 124-oil guiding flange; 125-spoiler ribs; 130-fitting ring; 140-an oil baffle rib plate; 150-an oil baffle plate; 200-a rear side case; 210-a third groove; 220-communicating grooves; 230-oil guide ribs; 300-planetary motion assembly; 400-an air permeable cap; 500-rear side oil collection piece; 600-electric control box; 700-driving a motor; 800-a rear side oil baffle; 810-inner ring plates; 820-arc guide plate; 830-outer ring plate; 831-oil outlet groove; 840-guide bars; 850-guiding grooves; 860-oil storage area.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Referring to fig. 1-11, in the present embodiment, the electrically driven planetary reduction gearbox power device includes a front side end cover 100, a rear side casing 200, a planetary motion assembly 300, a ventilation cap 400, an electric cabinet 600 and a driving motor 700. The electric cabinet 600 is mounted on the casing of the driving motor 700, and the electric cabinet 600 is electrically connected with the driving motor 700 and used for controlling the working state of the driving motor 700; the cabinet is mounted to the front end cap 100. The front side end cover 100 is provided with a first chamber 001 and a front side oil collecting cavity 002, the front side end cover 100 is connected with the rear side case 200, and the front side end cover 100 and the rear side case 200 are matched to form a lubricating chamber 003 and a second chamber 004 which are mutually independent, and the first chamber 001 is simultaneously communicated with the lubricating chamber 003 and the second chamber 004. The front oil collection cavity 002 is communicated with the lubrication cavity 003, and is used for temporarily storing lubricating oil and conveying the lubricating oil to the front bearing seat 006. The planetary motion assembly 300 is disposed within the lubrication chamber 003. The ventilation cap 400 is mounted to the front side end cover 100 or the rear side case 200, and the ventilation cap 400 communicates with the second chamber 004.

Based on the above technical scheme, the working principle of the electric drive planetary reduction gearbox power device provided by the embodiment is as follows:

In the normal operation process of the gear box, after the electric cabinet 600 is electrified, the driving motor 700 can be controlled, and the working state of the driving motor 700, such as start-stop, rotating speed, rotating direction and the like of the driving motor 700, can be adjusted. And, after the driving motor 700 rotates, the planetary motion assembly 300 in the gear box is driven to move, and lubricating oil is stirred in the movement process of the planetary motion assembly 300, so that the lubricating oil is conveyed to various positions in the lubricating cavity 003 in a splash mode and the like to lubricate parts. In addition, during the movement process of the lubricating oil, part of the lubricating oil can be collected by the front oil collecting cavity 002, and the part of the lubricating oil can not directly reach the front bearing seat 006 to participate in lubrication, but can be temporarily stored in the front oil collecting cavity 002, and then flows from the front oil collecting cavity 002 to the front bearing seat 006 to lubricate the bearing. Therefore, when the gear box is in the inclined state with a large angle, lubricating oil cannot reach the upper part of the front bearing seat 006 in a stirring manner of the transmission piece, so that the bearing at the front bearing seat 006 cannot be effectively lubricated, at this moment, the lubricating oil temporarily stored in the front oil collecting cavity 002 can be discharged and reach the front bearing seat 006, so that the bearing is effectively lubricated, the bearing is not easy to be ablated and damaged, and the operation reliability of the gear box is high.

Meanwhile, in the operation process of the gear box, the internal air pressure is increased, a high-temperature and high-pressure oil-gas mixture is formed in the lubrication cavity 003, and before reaching the ventilation cap 400, the oil-gas mixture sequentially passes through the first chamber 001 and the second chamber 004, and the first chamber 001 and the second chamber 004 can separate the oil-gas mixture, so that the separation effect of the oil-gas mixture is effectively improved, the load at the ventilation cap 400 is small, and the oil leakage at the ventilation cap 400 is difficult to occur. The first chamber 001 and the second chamber 004 are formed by utilizing the inner spaces of the front side end cover 100 and the rear side case shell 200, so that the whole structure is compact, the volume is small, redundant structural members do not need to be added, the processing and the manufacturing are convenient, and the cost is low.

Referring to fig. 1-3, in this embodiment, the power device of the electrically driven planetary reduction gearbox includes a front end cover 100, a rear case 200, a planetary motion assembly 300, a ventilation cap 400, a rear oil collecting member 500, an electric cabinet 600, a driving motor 700 and a rear oil baffle 800. The front side end cover 100 is provided with a first chamber 001 and a front side oil collecting cavity 002, the front side end cover 100 is connected with the rear side case 200, and the front side end cover 100 and the rear side case 200 are matched to form a lubricating chamber 003 and a second chamber 004 which are mutually independent, and the first chamber 001 is simultaneously communicated with the lubricating chamber 003 and the second chamber 004. The front oil collection cavity 002 is communicated with the lubrication cavity 003, and is used for temporarily storing lubricating oil and conveying the lubricating oil to the front bearing seat 006. The planetary motion assembly 300 is disposed within the lubrication chamber 003. The ventilation cap 400 is mounted to the front side end cover 100 or the rear side case 200, and the ventilation cap 400 communicates with the second chamber 004. The rear oil collecting piece 500 is mounted on the rear bearing block 007, and is matched with the rear bearing block 007 to define a rear oil collecting cavity 008 communicated with the lubricating cavity 003, and the rear oil collecting cavity 008 is used for temporarily storing lubricating oil and can convey the lubricating oil to the rear bearing block 007. The casing of the driving motor 700 is fixed on the front side end cover 100 through bolts, and the output shaft of the driving motor 700 is fixedly connected with the sun gear of the planetary motion assembly 300 through a spline and other structures, and the driving motor 700 moves to drive the sun gear to rotate. The electric cabinet 600 is mounted on the housing of the driving motor 700, and for example, the electric cabinet 600 may be fixed to the housing of the driving motor 700 by fasteners such as bolts. The rear oil baffle 800 is mounted on an inner side surface of the rear case facing the front end cap 100 with a space between the rear oil baffle 800 and the inner side surface of the rear case to form an oil storage area 860; the bottom edge of the rear oil baffle 800 is provided with an oil outlet groove 831 communicating the oil reservoir area 860 and the lubrication chamber 003.

So design, through the cooperation structure of first cavity 001, second cavity 004 and ventilative cap 400, the oil gas mixture passes through first cavity 001, second cavity 004 and ventilative cap 400 in proper order, realizes multistage separation, and is effectual to the separation of oil gas mixture, and the load of ventilative cap 400 department is little, is difficult for appearing the phenomenon of seepage oil. And, when the vehicle is in the inclined state of great angle, the bearing of front bearing frame 006 department can lubricate through the lubricating oil of front side oil collection cavity 002 temporary storage, and the bearing of rear bearing frame 007 department can lubricate through the lubricating oil of rear side oil collection cavity 008 temporary storage, and lubrication effect is good.

Referring to fig. 1-7, in this embodiment, optionally, the front end cover 100 includes an end cover main body 110 and a front oil collecting member 120, where the end cover main body 110 and the front oil collecting member 120 are connected, and the two cooperate to define a first chamber 001 and an oil gas inlet channel 005.

Referring to fig. 4 and 5, alternatively, the end cover main body 110 has an inner side surface capable of interfacing with the rear side case 200, and a first groove 111 and a second groove 112 are provided on the inner side surface, the first groove 111 being located outside the second groove 112 in a radial direction of the end cover main body 110, that is, the first groove 111 is located farther from a center position of the end cover main body 110 than the second groove 112. The first groove 111 and the second groove 112 may each be an arc-shaped groove extending in the circumferential direction of the end cap body 110. The groove depth directions of the first groove 111 and the second groove 112 are both in the thickness direction of the end cover main body 110, and the groove depth of the first groove 111 is greater than the groove depth of the second groove 112. Meanwhile, the assembly ring 130 is further arranged on the inner side surface in a protruding mode, the assembly ring 130 and the end cover main body 110 are coaxially arranged, the assembly ring 130 can be inserted into the rear side case 200, the contact area is increased, and the sealing performance and the combination firmness are improved. In order to improve the sealing property, a sealing ring may be further provided between the fitting ring 130 and the rear side case 200. The first groove 111 and the second groove 112 are both located in the area enclosed by the fitting ring 130. It should be appreciated that the assembly ring 130 and the end cap body 110 may be provided as a unitary structure, which is strong and safe to use. The inside of the cap body 110 is further provided with a communication hole 113, one end of the communication hole 113 extends to the groove wall of the first groove 111, and the other end penetrates the cap body 110 and the fitting ring 130 and is located on the outer circumferential surface of the fitting ring 130 and the inner side surface of the cap body 110, and the first groove 111 and the second chamber 004 can be communicated through the communication hole 113. The communication hole 113 may be a circular hole, an end of the communication hole 113 communicating with the first chamber 001 is a first end 1131, an end of the communication hole 113 communicating with the second chamber 004 is a second end 1132, the first end 1131 and the second end 1132 have a distance in an extending direction of an axis of the end cap body 110, and a height of the first end 1131 is lower than a height of the second end 1132, for example, the first end 1131 is closer to a bottom wall of the first groove 111 than the second end 1132. And, the first end 1131 is located between the groove bottom wall of the first groove 111 and the groove bottom wall of the second groove 112, and the mixture of oil and gas entering from the second groove 112 does not directly enter into the communication hole 113.

Further, the second groove 112 is a gradual groove, and the groove width of the second groove 112 gradually increases in a direction from one end of the second groove 112 near the first groove 111 to the other end, wherein the groove width direction of the second groove 112 coincides with the circumferential direction of the cover plate.

In addition, an oil baffle rib plate 140 may be disposed on an inner side surface of the end cover main body 110, one side of the oil baffle rib plate 140 is in sealing connection with an inner circumferential surface of the assembly ring 130, two oil baffle plates 150 are convexly disposed on the oil baffle rib plate 140, the two oil baffle plates 150 are arranged at intervals in a circumferential direction of the end cover main body 110, and the first groove 111 is located between the two oil baffle plates 150. The oil blocking rib plate 140 can block the disturbed part of the lubricating oil and enable the lubricating oil to flow directly onto the front bearing seat 006, so that the lubricating area in the circumferential direction of the front bearing seat 006 is increased. The end cover main body 110, the oil baffle rib plates 140 and the two oil baffle plates 150 can be integrally formed, and the design of the oil baffle rib plates 140 can prevent lubricating oil from directly entering the first chamber 001 and the oil-gas inlet channel 005, so that the load of the first chamber 001 is reduced, and the oil-gas separation effect is improved. In addition, the oil baffle rib plate 140 can guide lubricating oil into the front oil collecting cavity 002, so that the oil collecting efficiency of the front oil collecting cavity 002 is improved.

It should be appreciated that the portion provided with the oil baffle rib 140 increases the thickness of the cover plate, thereby improving the structural strength of the cover plate, and the first groove 111 and the second groove 112 may be formed on the oil baffle rib 140, reducing the weakening of the strength of the end cover main body 110, and being capable of increasing the volume of the first chamber 001 and improving the oil-gas separation capability.

Please combine fig. 6 and 7, optionally, the front side oil collecting member 120 includes an installation side plate 121, an oil blocking side plate 122, a bottom plate 123 and an oil guiding flange 124 which are integrally structured, and the installation side plate 121, the oil blocking side plate 122 and the bottom plate 123 cooperate to form a front side oil collecting cavity 002, an oil outlet 1231 communicated with the front side oil collecting cavity 002 is provided at the bottom of the bottom plate 123, the oil outlet 1231 may be a square hole or a round hole, etc., and the oil outlet 1231 can guide lubricating oil in the front side oil collecting cavity 002 to the front bearing seat 006. The mounting side plate 121 is provided with at least one fixing hole 1211, and each fixing hole 1211 is internally provided with a fastener in a penetrating manner, and the fasteners can be screwed and fixed with the threaded holes on the front bearing seat 006, so that the front oil collecting piece 120 is fixedly connected with the end cover main body 110. The inner wall of the mounting side plate 121 is provided with an oil guiding inclined surface 1212, and the oil guiding inclined surface 1212 can guide the lubricating oil to the oil outlet hole 1231. The oil baffle side plate 122 is provided with two avoidance grooves 1221, and the two avoidance grooves 1221 are used for being respectively in plug-in connection with the two oil baffle plates 150, so that the front oil collecting piece 120 and the oil baffle plates 150 are prevented from interfering. Meanwhile, two turbulence ribs 125 are convexly arranged on the inner wall of the oil baffle side plate 122, the turbulence ribs 125 extend to the bottom plate 123 and have a distance from the installation side plate 121, and the oil outlet 1231 is positioned between the two turbulence ribs 125. Through setting up vortex rib 125, can slow down lubricating oil from oil outlet 1231 exhaust speed to improve the temporary storage effect of lubricating oil, do benefit to when the gear box is in the inclined state of great angle for the bearing of front bearing frame 006 department supplements lubricating oil. The oil guiding flange 124 is convexly arranged on the inner wall of the mounting side plate 121 and has a distance from the oil outlet 1231, the oil guiding flange 124 is provided with an inner arc surface, and the inner arc surface can guide lubricating oil to enter the front oil collecting cavity 002.

In addition, the bottom plate 123 is the arc, and installation curb plate 121 and fender oil curb plate 122 are located the both sides that bottom plate 123 are relative respectively, and the height that keeps away from the bottom plate 123 of fender oil curb plate 122 is higher than the height of bottom plate 123 and installation curb plate 121, so, the top of front side oil collection cavity 002 forms the opening, and this opening is the oil spilling mouth, and the oil mass that front side oil collection cavity 002 stored can spill over from the edge of bottom plate 123 and installation curb plate 121. The quantity of the lubricating oil in the front oil collecting cavity 002 is ensured to be enough, and the quantity of the lubricating oil flowing back into the lubricating cavity 003 is not influenced, so that the lubricating of other parts is facilitated.

It should be understood that an opening may be provided on the front bearing seat 006, and after the lubricating oil discharged from the oil outlet 1231 of the front oil collecting cavity 002 falls onto the front bearing seat 006, the lubricating oil enters the corresponding bearing from the opening to lubricate the bearing and other components.

In this embodiment, it should be noted that, after the front oil collecting member 120 is assembled with the end cover main body 110, the outer plate surface of the oil baffle side plate 122 is attached to the inner side surface of the end cover main body 110, the oil baffle side plate 122 seals the notches of the first groove 111 and the second groove 112, so that the first groove 111 forms the first chamber 001, and the second groove 112 forms the oil gas inlet channel 005. And two keep off oily gusset 140 on the end cover main part 110 peg graft respectively in two dodge grooves 1221 on the installation curb plate 121, play the effect of location, also can improve the fastness of combination to, keep off oily gusset 140 protruding the inner wall of locating the installation curb plate 121, when lubricating oil is splashed to keeping off oily gusset 140 by stirring, blocked by keeping off oily gusset 140, lubricating oil falls into front side oil collection cavity 002 along keeping off oily gusset 140. Meanwhile, the oil baffle rib plate 140 shields the position where the side plate 121 and the first groove 111 are sealed, lubricating oil is not easy to enter the first chamber 001 from the notch of the first groove 111, the work load of the first chamber 001 is reduced, and the oil-gas separation effect of the first chamber 001 is improved. It should be noted that, because the second recess 112 is the gradual change groove for oil gas entering passageway 005 is the gradual change hole, the bore of the port that oil gas entering passageway 005 and lubricated chamber 003 communicate is great, the bore of the port that oil gas entering passageway 005 and first cavity 001 communicate is less, the oil gas mixture in the lubricated chamber 003 of being convenient for utilize great port guide enters into first cavity 001, and the surface area of the pore wall of oil gas entering passageway 005 compares the surface area of the pore wall of cylinder hole big, when oil gas mixture passes through oil gas entering passageway 005 and gets into first cavity 001, the quantity of the fluid that is attached to on the wall of oil gas entering passageway 005 increases, the fluid can fall back into lubricated cavity 003 under the action of gravity, thereby improve the oil gas separation effect. Meanwhile, since the first end 1131 of the communication hole 113 is located between the bottom wall of the first groove 111 and the bottom wall of the second groove 112, or the first end 1131 and the bottom wall of the second groove 112 have a distance in the axial extension direction of the end cover main body 110, the oil gas inlet channel 005 and the first end 1131 of the communication hole 113 have a distance in the axial extension direction of the end cover main body 110, the oil gas mixture entering the first chamber 001 from the oil gas inlet channel 005 does not directly flow to the communication hole 113, but enters the communication hole 113 after oil gas separation in the first chamber 001, so that the residence time of the oil gas mixture in the first chamber 001 is prolonged, and the oil gas separation effect is improved.

Referring to fig. 8 and 9, in this embodiment, optionally, the rear side case 200 is provided with a mounting groove, an end surface of the mounting groove where a notch of the mounting groove is located is an annular end surface, and a third groove 210 and a communicating groove 220 are disposed on the annular end surface, where the third groove 210 may be an arc-shaped groove extending in a circumferential direction of the rear side case 200. When the rear case 200 is docked with the front end cap 100, the assembly ring 130 is inserted into the mounting groove, and the assembly ring 130, the end cap main body 110 and the rear case 200 cooperate to define a lubrication chamber 003. The inner side of the end cap body 110 closes the notches of the third recess 210 and the fourth recess 071 such that the third recess 210 forms the second chamber 004. And, the second end 1132 of the communication hole 113 is butted and communicated with the communication groove 220. The air-permeable cap 400 is mounted on the rear side case 200 and communicates with the second chamber 004. Because the third groove 210 is formed on the rear case 200, the inner space of the rear case 200 is utilized, and the processing and manufacturing are facilitated, and the overall structure is compact, and the assembly is facilitated.

Further, an oil guide rib 230 may be disposed on the inner wall of the rear side casing 200, and the oil guide rib 230 may guide the lubricating oil into the rear side oil collecting cavity 008.

In this embodiment, optionally, the rear oil collecting member 500 is disposed in the lubrication chamber 003, and the rear oil collecting member 500 may be connected to the rear bearing support 007, so as to form the rear oil collecting cavity 008 in cooperation with the rear bearing support 007. For example, a fourth groove 071 is provided on the outer peripheral surface of the rear bearing seat 007, an opening is provided on the bottom wall of the groove of the fourth groove 071, the rear oil collecting member 500 is connected with the rear bearing seat 007 through a fastener such as a bolt, and one side of the fourth groove 071 is closed, so that a rear oil collecting cavity 008 is formed at the fourth groove 071, the inner space of the rear bearing seat 007 is fully utilized, the compactness of the whole structure is improved, the volume is small, and the occupied space is small. In the normal operation process of the gear box, the lubricating oil is temporarily stored in the rear oil collecting cavity 008, under the working condition that the gear box is in the inclined state of a large angle, the lubricating oil cannot reach the upper side of the rear bearing seat 007 in a stirring mode of a transmission piece, the bearing at the position of the rear bearing seat 007 cannot be effectively lubricated, at the moment, the lubricating oil temporarily stored in the rear oil collecting cavity 008 can be discharged from an opening and reaches the position of the rear bearing seat 007, so that corresponding parts such as the bearing are effectively lubricated, the bearing is not easy to be ablated and damaged, and the operation reliability of the gear box is high.

Referring to fig. 12-13, the rear oil baffle 800 includes an inner ring plate 810, an arc guide plate 820, and an outer ring plate 830, which are integrally formed. Wherein the cross-section of each of the inner ring plate 810, the arcuate guide plate 820 and the outer ring plate 830 is substantially semi-circular in configuration. The outer side of the inner ring plate 810 is connected with the inner concave of the arc guide plate 820, the outer convex of the arc guide plate 820 is connected with the inner side of the outer ring plate 830, the inner ring plate 810 can be fixed on the inner side of the rear side case by fasteners such as bolts, and the outer ring plate 830 has a distance from the inner side of the rear side case. The arc guide 820 protrudes from the rear case toward the front end cover 100 in the direction of the inner ring plate 810 and the outer ring plate 830. And, be provided with a plurality of guide bars 840 on the interior concave surface of arc baffle 820, a plurality of guide bars 840 are evenly spaced in the circumference of arc baffle 820 and arrange, form guide groove 850 between the adjacent arc baffle 820, can guide fluid to enter into in the lubrication chamber 003. Through rear side oil baffle 800 and rear side case 200 cooperation formation oil storage area 860, part lubricating oil can be stored in oil storage area 860, and during operation, the lubricating oil in the oil storage area 860 can be followed the oil outlet 1231 and discharged and participate in the lubrication, can also be stirred and participate in the lubrication, improves lubricated effect.

The electric planet reduction gearbox power device that this embodiment provided utilizes the inner space of front side end housing 100 and rear side case 200 to form first cavity 001 and second cavity 004, and overall structure is compact, and is small, and the space that occupies is little, does benefit to the assembly, carries out oil-gas separation through first cavity 001, second cavity 004 and ventilative cap 400 cooperation, and separation effect is good, does not need to set up unnecessary part and carries out oil-gas separation, reduction in manufacturing cost. Meanwhile, through the structural design of the front oil collecting cavity 002 and the rear oil collecting cavity 008, when the gear box is in a large-angle inclined state, parts such as a bearing and the like can be effectively lubricated, the stability of the gear box is improved, and the service life is prolonged. And, front side oil collecting piece 120 and apron cooperation both realize oil-gas separation through the structure of first cavity 001, realize lubricating oil temporary storage through the structure of front side oil collecting cavity 002 again, the rational utilization gear box inner space has improved stability and reliability under the prerequisite of not increasing the volume.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. An electrically driven planetary reduction gearbox power device, comprising:

The planetary motion device comprises an electric cabinet, a driving motor, a front side end cover, a rear side case, a planetary motion assembly and an air permeable cap;

The electric control box is arranged on the shell of the driving motor, is electrically connected with the driving motor and is used for controlling the working state of the driving motor; the shell is arranged on the front side end cover; the front side end cover is connected with the rear side case shell and is matched with the rear side case shell to form a lubricating cavity and a second cavity which are mutually independent, and the first cavity is communicated with the lubricating cavity and the second cavity at the same time; the front side oil collecting cavity is communicated with the lubricating cavity and is used for temporarily storing lubricating oil and conveying the lubricating oil to the front bearing seat; the planetary motion assembly is arranged in the lubrication cavity, and an output shaft of the driving motor is in transmission connection with the planetary motion assembly; the ventilation cap is arranged on the front side end cover and is communicated with the second cavity.

2. The electrically driven planetary reduction gearbox power unit of claim 1, wherein:

The front end cover comprises an end cover main body and a front oil collecting piece, and a first groove and a second groove are formed in the inner side face of the end cover main body; the front oil collecting piece is connected with the inner side surface, and the notches of the first groove and the second groove are closed, so that the first groove forms the first chamber, the second groove forms an oil gas inlet channel, one end of the oil gas inlet channel is communicated with the first groove, and the other end of the oil gas inlet channel is communicated with the lubrication cavity;

The end cover main body is matched with the rear side case shell to form the lubrication cavity and the second cavity, and the front side oil collecting piece is positioned in the lubrication cavity.

3. The electrically driven planetary reduction gearbox power unit of claim 2, wherein:

The second groove is provided as a gradual change groove, and the groove width of the second groove gradually increases in a direction from one end of the second groove, which is close to the first groove, to the other end.

4. The electrically driven planetary reduction gearbox power unit of claim 2, wherein:

The front oil collecting cavity is formed on one side, away from the first groove, of the front oil collecting piece.

5. The electrically driven planetary reduction gearbox power unit of claim 2, wherein:

Two oil baffle plates are integrally formed on the inner side surface of the end cover main body, the two oil baffle plates are respectively positioned on two sides of the first groove in the circumferential direction of the end cover main body, and the front oil collecting piece is embedded between the two oil baffle plates; each oil baffle plate is used for separating an oil-gas mixture.

6. The electrically driven planetary reduction gearbox power unit of claim 1, wherein:

The annular end face of the rear side case shell is provided with a third groove, the front side end cover is in butt joint with the annular end face and seals the notch of the third groove, and the front side end cover is matched with the rear side case shell to form the second cavity at the third groove.

7. The electrically driven planetary reduction gearbox power unit of claim 1, wherein:

The front end cover is provided with a communication hole, the communication hole is provided with a first end communicated with the first cavity and a second end communicated with the second cavity, the first end and the second end are provided with a distance in the extending direction of the rotation axis of the planetary motion assembly, and the height of the first end is lower than that of the second end.

8. The electrically driven planetary reduction gearbox power unit of claim 1, wherein:

The electric drive planetary reduction gearbox power device further comprises a rear oil baffle plate, wherein the rear oil baffle plate is arranged on the inner side surface of the rear side gearbox shell facing the front side end cover, and a space is reserved between the rear oil baffle plate and the inner side surface of the rear side gearbox shell so as to form an oil storage area; the bottom edge of rear side oil baffle is provided with the oil groove that communicates oil storage region and lubrication chamber.

9. The electrically driven planetary reduction gearbox power arrangement of claim 8, wherein:

The rear side oil baffle comprises an inner ring plate, an arc-shaped guide plate and an outer ring plate which are of an integrated structure, wherein the outer side of the inner ring plate is connected with the inner concave surface of the arc-shaped guide plate, the outer convex surface of the arc-shaped guide plate is connected with the outer ring plate, the inner ring plate is fixed on the inner side surface of the rear side box shell, and the outer ring plate is spaced from the inner side surface of the rear side box shell; the arc guide plate protrudes from the inner ring plate and the outer ring plate in a direction from the rear side case toward the front side end cover.

10. The electrically driven planetary reduction gearbox power arrangement of claim 9, wherein:

the inner concave surface of the arc-shaped guide plate is provided with a plurality of guide strips, and the guide strips are distributed at intervals in the circumferential direction of the arc-shaped guide plate.