Electric drive axle speed reducer shell

Abstract

The invention discloses an electric drive axle speed reducer shell, and relates to the technical field of electric drive axle speed reducers. The two differential bearing seats are fixedly connected to the bottom end of the reduction gear box in a bilateral symmetry mode, a connecting plate is fixedly connected to the left side face of the reduction gear box, and a first round hole and a second round hole are formed in the left side face of the connecting plate. The reduction gear box is arranged, the appearance of the reduction gear box is designed in a matched mode according to the overall outline of internal installation parts, the wall thicknesses of all the positions of the outer side wall of the reduction gear box are uniform, and therefore materials used for the shell can be effectively reduced, and the light weight degree of the shell is improved; and in cooperation with a plurality of second supporting ribs which are fixedly connected between the right side face of the connecting plate and the outer side wall of the reduction gear box at equal intervals in the contour direction of the outer side wall of the reduction gear box, the structural strength of the shell can be ensured on the premise that materials used by the shell are reduced, and the reliability and economical efficiency of the shell are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric drive axle reducers, in particular to an electric drive axle reducer housing. Background Art

[0002] The new energy electric drive axle is a transmission system that converts electrical energy into mechanical energy. The power transmission route is motor → main reducer → wheel. The structural strength and performance of the reducer housing directly affect the efficiency and performance of the entire transmission system.

[0003] However, in the context of lightweight commercial vehicles, lightweight electric drive axles can significantly reduce the weight of vehicles, reduce the energy consumption of new energy vehicles and increase the range. Therefore, under the premise of meeting the use requirements, lighter products can have more advantages in the market.

[0004] The Chinese utility model patent with patent application number CN202322269584.X records a new type of electric drive axle reducer housing, which reduces product weight and improves material utilization while further ensuring the overall strength of the product by reasonably arranging reinforcing rib structures on the motor housing, the surface of the reducer housing and between them, and arranging reasonable connection reinforcing rib structures at the connection parts of each housing. However, a large number of reinforcing rib structures are arranged on the outer wall of the above-mentioned housing, resulting in poor lightweight of the housing and affecting the heat dissipation performance of the reducer housing, reducing the economy and reliability of the housing. For this reason, we propose an electric drive axle reducer housing. Summary of the invention

[0005] The object of the present invention is to provide an electric drive axle reducer housing to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electric drive axle reducer housing, comprising: a reduction gearbox; and further comprising: two differential bearing seats fixedly connected to the bottom end of the reduction gearbox symmetrically on the left and right sides, a connecting plate fixedly connected to the left side of the reduction gearbox, a first circular hole and a second circular hole opened on the left side of the connecting plate, a first bearing seat and a second bearing seat symmetrically fixedly connected to the left side wall of the reduction gearbox, a first rotating shaft and a second rotating shaft rotatably connected in the first bearing seat and the second bearing seat respectively through bearings, the left ends of the first bearing seat and the second bearing seat are respectively connected to the right ends of the first circular hole and the second circular hole, and a large flange is fixedly connected to the bottom end of the reduction gearbox;

[0007] The outer shape of the reduction gearbox is adaptively designed according to the overall contour of the internal mounting components, the outer wall of the reduction gearbox has a uniform wall thickness at various locations, and a plurality of second support ribs are fixedly connected between the right side surface of the connecting plate and the outer wall of the reduction gearbox at equal distances along the contour direction of the outer wall of the reduction gearbox.

[0008] Preferably, two sets of third support ribs are symmetrically fixedly connected between the two sides of the differential bearing seats that are away from each other and the bottom surface of the reduction gear box, and two fourth support ribs are symmetrically fixedly connected between the top and bottom of the differential bearing seats and the bottom surface of the reduction gear box. The advantage of such an arrangement is that the structural strength of the shell can be effectively improved by the third support ribs and the fourth support ribs.

[0009] Preferably, a first supporting rib is fixedly connected between the left side surface of the connecting plate and the top surface of the large flange.

[0010] Preferably, two grooves are symmetrically provided at the bottom of the two differential bearing seats, a sixth supporting rib is fixedly connected between the left side surface of the differential bearing seat on the right side and the bottom surface of the reduction gear box, and a seventh supporting rib is fixedly connected between the right side surface of the differential bearing seat on the left side and the bottom surface of the reduction gear box. The advantage of such an arrangement is that the weight of the housing can be reduced as much as possible while ensuring the reliability of the housing, thereby improving the reliability and economy of the housing.

[0011] Preferably, the groove at the bottom of the differential bearing seat is arched. The advantage of such a configuration is that the arched groove can ensure the supporting strength of the differential bearing seat while reducing the weight of the differential bearing seat.

[0012] Preferably, an inner circular groove is provided on the left side of the connecting plate, the first circular hole and the second circular hole are provided on the right inner wall of the inner circular groove, and a plurality of reinforcing ribs are fixedly connected in an annular manner at equal angles between the inner side wall of the inner circular groove and the right inner wall.

[0013] Preferably, the first bearing seat and the second bearing seat are both fixedly connected to the left inner wall of the reduction gear box, and the outer side walls of the first bearing seat and the second bearing seat are both fixedly connected to the right side surface of the connecting plate in a circular shape with equal angles with a plurality of fifth support ribs. The advantage of such a configuration is that the strength of the connection between the first bearing seat and the second bearing seat and the reduction gear box can be enhanced by means of a plurality of fifth support ribs, thereby effectively improving the structural strength of the housing.

[0014] Preferably, a circulating transmission structure for driving the circulation of lubricating oil is provided in the reduction gearbox. The advantage of such a configuration is that the heat dissipation and lubrication performance of the housing can be further improved, thereby greatly improving the reliability of the housing.

[0015] Preferably, the circulating transmission structure in the reduction gearbox includes an internal oil passage opened on the left inner wall of the reduction gearbox, and the circulating transmission structure also includes an oil inlet and an oil return port opened on the inner wall of the first bearing seat, the oil inlet is connected to the internal oil passage, the oil return port is connected to the inner cavity of the reduction gearbox, an oil guide passage is opened on the inner wall of the reduction gearbox, the left end of the oil guide passage is connected to the internal oil passage, the right end of the oil guide passage is aligned with the bearing connected to the right end of the first rotating shaft, and the bearing connected to the right end of the first rotating shaft is fixedly connected to the right inner wall of the reduction gearbox. The advantage of such an arrangement is that the large gear connected to the first rotating shaft can throw the lubricating oil in the reduction gearbox into the internal oil passage during working rotation, and then the lubricating oil in the internal oil passage flows to the bearing chamber at the left end of the first rotating shaft and the bearing at the right end of the first rotating shaft respectively through the oil inlet and the oil guide passage, and then the lubricating oil in the bearing chamber at the left end of the first rotating shaft will flow back to the interior of the reduction gearbox again through the oil return port, thereby realizing the circulation of the lubricating oil and improving the heat dissipation performance and lubrication effect of the bearing inside the shell.

[0016] Preferably, four boss claws are fixedly connected in a rectangular shape on the outer peripheral surface of the large flange.

[0017] Preferably, a monitoring box is fixedly connected to the front side wall of the reduction gear box through a bracket, and a liquid inlet pipe and a liquid discharge pipe are connected to the back side of the monitoring box, and the ends of the liquid inlet pipe and the liquid discharge pipe away from the monitoring box both penetrate the front side wall of the reduction gear box and are connected to the front side wall of the internal oil channel, and an oil pump is installed on the liquid inlet pipe and the liquid discharge pipe, and a first guide plate and an arc plate are fixedly connected between the left and right inner walls of the monitoring box, the top of the first guide plate is close to the liquid inlet end of the liquid inlet pipe, the bottom end of the first guide plate is fixedly connected to the top of the arc plate, and the concave arc surface of the arc plate faces upward to temporarily store lubricating oil, and a liquid turbidity sensor is installed on the front side wall of the monitoring box. The sensor is located at the concave arc surface of the arc plate so as to be immersed in the temporarily stored lubricating oil. A transparent observation window is installed on the right side of the monitoring box. The advantage of this arrangement is that part of the lubricating oil in the internal oil channel is intermittently pumped into the monitoring box through the oil pump and the liquid inlet pipe, and then part of the lubricating oil flows through the first guide plate to the concave arc surface of the arc plate and finally flows to the bottom of the monitoring box. The turbidity of the lubricating oil temporarily stored at the concave arc surface of the arc plate can be monitored by the liquid turbidity sensor. When the turbidity is higher than the set threshold, an alarm will be issued to prompt the replacement of the lubricating oil in the reduction gearbox, and the lubricating oil pumped into the monitoring box will return to the reduction gearbox again under the transportation of the oil pump and the drain pipe.

[0018] Preferably, the front of the monitoring box is fixedly connected to an additive box, the top of the additive box is connected to a liquid injection pipe, the back of the additive box is connected to a liquid delivery pipe, an oil pump is installed on the liquid delivery pipe, the liquid delivery pipe extends into the interior of the monitoring box, the right side of the monitoring box is fixedly connected to a motor, the output end of the motor passes through the right side wall of the monitoring box and is fixedly connected to a rotating rod, and a plurality of stirring rods are fixedly connected to the outer peripheral surface of the rotating rod. The advantage of such an arrangement is that when the liquid turbidity sensor monitors the turbidity of the intermittently drawn lubricating oil, if it is found that the turbidity exceeds the set threshold, the lubricating oil additive in the additive box can be delivered into the monitoring box through the oil pump and the liquid delivery pipe, and the motor is started to drive the stirring rod to rotate through the rotating rod so that the lubricating oil and the lubricating oil additive are mixed and finally delivered into the reduction gear box by the oil pump and the discharge pipe, so that the lubricant additive and the lubricating oil in the reduction gear box can be mixed faster to purify the lubricating oil, extend the service life of the lubricating oil and reduce the damage of the deteriorated lubricating oil to the inner wall and internal components of the reduction gear box.

[0019] Preferably, an inclined guide plate is fixedly connected between the left and right inner walls of the monitoring box, the top of the inclined guide plate is located in front of the bottom end of the arc plate, the bottom end of the inclined guide plate is located in front of the bottom end of the first guide plate, and the motor drives the rotating rod to rotate clockwise.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention adapts the outer shape of the reduction gear box according to the overall contour of the internal installation components, and makes the wall thickness of the outer wall of the reduction gear box uniform, which can effectively reduce the material used in the shell and improve the lightweight degree of the shell. In addition, a plurality of second support ribs are equidistantly fixed and connected between the right side surface of the connecting plate and the outer wall of the reduction gear box along the contour direction of the outer wall of the reduction gear box. The structural strength of the shell can be ensured while reducing the material used in the shell, effectively improving the reliability and economy of the shell. At the same time, the lubricating oil in the reduction gear box can be intermittently extracted through the monitoring box and the turbidity can be monitored to prevent the lubricating oil from continuing to work when it is too turbid and flowing into the interior of the reduction gear box and internal components. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the first structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the second structure of the present invention;

[0024] Figure 3 A top view of the present invention;

[0025] Figure 4 It is a bottom view of the present invention;

[0026] Figure 5 For the present invention Figure 4 Sectional view at the AA plane;

[0027] Figure 6 It is a structural schematic diagram of the lubricating oil monitoring component in the present invention;

[0028] Figure 7 It is a schematic cross-sectional structural diagram of the lubricating oil monitoring component in the present invention.

[0029] In the figure: 1. first supporting rib; 101. reduction gear box; 102. differential bearing seat; 1021. groove; 103. connecting plate; 1031. first bearing seat; 1032. second bearing seat; 104. large flange; 2. second supporting rib; 3. third supporting rib; 4. fifth supporting rib; 5. internal oil passage; 6. sixth supporting rib; 7. reinforcing rib; 8. oil inlet; 9. oil return; 10. fourth supporting rib; 11. oil guide passage; 12. seventh supporting rib; 13. boss claw; 14. monitoring box; 141. bracket; 142. transparent observation window; 15. liquid inlet pipe; 16. liquid discharge pipe; 17. first guide plate; 171. arc plate; 18. additive box; 181. liquid injection pipe; 19. motor; 191. rotating shaft; 192. stirring rod; 193. inclined guide plate; 20. liquid turbidity sensor. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 7 , an electric drive axle reducer housing shown in the figure includes: a reduction gear box 101; and also includes: two differential bearing seats 102 symmetrically fixedly connected to the bottom end of the reduction gear box 101, a connecting plate 103 is fixedly connected to the left side of the reduction gear box 101, and a first circular hole and a second circular hole are opened on the left side of the connecting plate 103, and a first bearing seat 1031 and a second bearing seat 1032 are symmetrically fixedly connected to the left side wall of the reduction gear box 101, and a first rotating shaft and a second rotating shaft are rotatably connected in the first bearing seat 1031 and the second bearing seat 1032 through bearings, respectively, and the left ends of the first bearing seat 1031 and the second bearing seat 1032 are respectively connected to the right ends of the first circular hole and the second circular hole, and a large flange 104 is fixedly connected to the bottom end of the reduction gear box 101;

[0032] The outer shape of the reduction gear box 101 is adaptively designed according to the overall contour of the internal installation components. The wall thickness of the outer wall of the reduction gear box 101 is uniform at various locations. A plurality of second support ribs 2 are fixedly connected between the right side surface of the connecting plate 103 and the outer wall of the reduction gear box 101 at equal intervals along the contour direction of the outer wall of the reduction gear box 101.

[0033] refer to Figure 1-Figure 4 Two sets of third support ribs 3 are symmetrically fixedly connected between the sides away from each other of the two differential bearing seats 102 and the bottom surface of the reduction gear box 101, and two fourth support ribs 10 are symmetrically fixedly connected between the top and bottom of the differential bearing seat 102 and the bottom surface of the reduction gear box 101.

[0034] Specifically, the third support ribs 3 and the fourth support ribs 10 can effectively improve the structural strength of the shell.

[0035] refer to Figure 3 A first supporting rib 1 is fixedly connected between the left side surface of the connecting plate 103 and the top surface of the large flange 104 .

[0036] refer to Figure 2 , Figure 4 and Figure 5 Two grooves 1021 are symmetrically provided at the bottom of the two differential bearing seats 102. A sixth supporting rib 6 is fixedly connected between the left side surface of the differential bearing seat 102 on the right and the bottom surface of the reduction gear box 101. A seventh supporting rib 12 is fixedly connected between the right side surface of the differential bearing seat 102 on the left and the bottom surface of the reduction gear box 101.

[0037] Specifically, the sixth support rib 6 and the seventh support rib 12 can ensure the structural strength of the housing while reducing the weight of the differential bearing seat 102, thereby reducing the weight of the housing as much as possible while ensuring the reliability of the housing, thereby improving the reliability and economy of the housing.

[0038] refer to Figure 1 , Figure 2 and Figure 5 The groove 1021 at the bottom of the differential bearing seat 102 is arched.

[0039] Specifically, the arched groove 1021 can ensure the supporting strength of the differential bearing seat 102 while reducing the weight of the differential bearing seat 102 .

[0040] refer to Figure 2 An inner circular groove is provided on the left side of the connecting plate 103, a first circular hole and a second circular hole are provided on the right inner wall of the inner circular groove, and a plurality of reinforcing ribs 7 are fixedly connected in a circular shape at equal angles between the inner side wall of the inner circular groove and the right inner wall.

[0041] Specifically, the weight of the connecting plate 103 can be reduced, thereby reducing the weight of the shell, and combined with a plurality of reinforcing ribs 7, the structural strength of the connecting plate 103 can be ensured, ensuring that the connecting plate 103 can work stably.

[0042] refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 The first bearing seat 1031 and the second bearing seat 1032 are both fixedly connected to the left inner wall of the reduction gear box 101, and the outer side walls of the first bearing seat 1031 and the second bearing seat 1032 are both fixedly connected to the right side surface of the connecting plate 103 in a circular shape with equal angles and multiple fifth supporting ribs 4.

[0043] Specifically, the strength of the connection between the first bearing seat 1031 and the second bearing seat 1032 and the reduction gear box 101 can be enhanced by using a plurality of fifth supporting ribs 4, thereby effectively improving the structural strength of the housing.

[0044] refer to Figure 1 , Figure 2 and Figure 5 The reduction gear box 101 is provided with a circulating transmission structure for driving the circulation of lubricating oil.

[0045] Specifically, by driving the lubricating oil in the shell to circulate through the circulating transmission structure, it is possible to avoid the lubricating oil temperature at a local position being too high, which may cause damage to the internal components of the shell due to excessive temperature. Combined with a thinner shell designed to increase the degree of lightweight, the heat dissipation and lubrication performance of the shell can be further improved, greatly improving the reliability of the shell.

[0046] refer to Figure 1 , Figure 2 and Figure 5 The circulating transmission structure in the reduction gear box 101 includes an internal oil passage 5 opened on the left inner wall of the reduction gear box 101, and the circulating transmission structure also includes an oil inlet 8 and an oil return port 9 opened on the inner wall of the first bearing seat 1031, the oil inlet 8 is connected to the internal oil passage 5, the oil return port 9 is connected to the inner cavity of the reduction gear box 101, and an oil guide passage 11 is opened on the inner wall of the reduction gear box 101, the left end of the oil guide passage 11 is connected to the internal oil passage 5, and the right end of the oil guide passage 11 is aligned with the bearing connected to the right end of the first rotating shaft, and the bearing connected to the right end of the first rotating shaft is fixedly connected to the right inner wall of the reduction gear box 101.

[0047] Specifically, the large gear connected to the first rotating shaft can throw the lubricating oil in the reduction gear box 101 into the internal oil channel 5 during operation, and then the lubricating oil in the internal oil channel 5 flows through the oil inlet 8 and the oil guide channel 11 to the bearing chamber at the left end of the first rotating shaft and the bearing at the right end of the first rotating shaft respectively, and then the lubricating oil in the bearing chamber at the left end of the first rotating shaft will flow back to the interior of the reduction gear box 101 through the oil return port 9, thereby realizing the circulation of the lubricating oil and improving the heat dissipation performance and lubrication effect of the bearing inside the shell.

[0048] refer to Figure 1-Figure 5 Four boss claws 13 are fixedly connected to the outer peripheral surface of the large flange 104 in a rectangular shape.

[0049] Specifically, the processing positioning of the shell can be more accurate and the clamping is convenient.

[0050] refer to Figure 6 and Figure 7 The front side wall of the reduction gear box 101 is fixedly connected with a monitoring box 14 through a bracket 141. The back of the monitoring box 14 is connected with a liquid inlet pipe 15 and a liquid discharge pipe 16. The ends of the liquid inlet pipe 15 and the liquid discharge pipe 16 away from the monitoring box 14 both penetrate the front side wall of the reduction gear box 101 and are connected to the front side wall of the internal oil channel 5. The liquid inlet pipe 15 and the liquid discharge pipe 16 are both installed with oil pumps. The first guide plate 17 and the arc plate 17 are fixedly connected between the left and right inner walls of the monitoring box 14. 1, the top of the first guide plate 17 is close to the liquid inlet end of the liquid inlet pipe 15, the bottom end of the first guide plate 17 is fixedly connected to the top of the arc plate 171, the concave arc surface of the arc plate 171 faces upward to temporarily store the lubricating oil, a liquid turbidity sensor 20 is installed on the front side wall of the monitoring box 14, the liquid turbidity sensor 20 is located at the concave arc surface of the arc plate 171 to be immersed in the temporarily stored lubricating oil, and a transparent observation window 142 is installed on the right side of the monitoring box 14.

[0051] Specifically, part of the lubricating oil in the internal oil channel 5 is intermittently pumped into the monitoring box 14 through the oil pump and the liquid inlet pipe 15, and then a part of the lubricating oil flows through the first guide plate 17 to the concave arc surface of the arc plate 171 and finally flows to the bottom of the monitoring box 14. The turbidity of the lubricating oil temporarily stored on the concave arc surface of the arc plate 171 can be monitored by the liquid turbidity sensor 20. When the turbidity is higher than the set threshold, an alarm will be issued to prompt the replacement of the lubricating oil in the reduction gear box 101, and the lubricating oil pumped into the monitoring box 14 will return to the inside of the reduction gear box 101 again under the transportation of the oil pump and the drain pipe 16.

[0052] refer to Figure 7The front of the monitoring box 14 is fixedly connected to an additive box 18, the top of the additive box 18 is connected to a liquid injection pipe 181, the back of the additive box 18 is connected to a liquid delivery pipe, an oil pump is installed on the liquid delivery pipe, and the liquid delivery pipe extends into the interior of the monitoring box 14. The right side of the monitoring box 14 is fixedly connected to a motor 19, the output end of the motor 19 passes through the right side wall of the monitoring box 14 and is fixedly connected to a rotating rod 191, and a plurality of stirring rods 192 are fixedly connected to the outer peripheral surface of the rotating rod 191.

[0053] Specifically, when the liquid turbidity sensor 20 monitors the turbidity of the intermittently pumped lubricating oil, if the turbidity is found to exceed the set threshold, the lubricating oil additive in the additive box 18 can be delivered to the monitoring box 14 through the oil pump and the liquid delivery pipe, and the motor 19 is started to drive the stirring rod 192 to rotate through the rotating rod 191 so that the lubricating oil and the lubricating oil additive are mixed and finally delivered to the reduction gear box 101 by the oil pump and the discharge pipe 16. In this way, the lubricant additive and the lubricating oil in the reduction gear box 101 can be mixed more quickly to purify the lubricating oil, thereby extending the service life of the lubricating oil and reducing the damage of the deteriorated lubricating oil to the inner wall and internal components of the reduction gear box 101.

[0054] refer to Figure 7 An inclined guide plate 193 is fixedly connected between the left and right inner walls of the monitoring box 14. The top of the inclined guide plate 193 is located in front of the bottom end of the arc plate 171. The bottom end of the inclined guide plate 193 is located in front of the bottom end of the first guide plate 17. The motor 19 drives the rotating rod 191 to rotate clockwise.

[0055] Specifically, the lubricating oil can be transported to the front side of the liquid delivery pipe through the inclined guide plate 193 and the first guide plate 17, and then the lubricating oil can be thrown to the liquid outlet end of the right liquid delivery pipe with the clockwise rotation of the stirring rod 192, and then the lubricating oil falls from a high place to the bottom of the monitoring box 14, so that the lubricating oil can be more fully mixed with the lubricating oil additive.

[0056] Working principle: When in use, the first rotating shaft installed at the first bearing seat 1031 drives the large gear thereon to rotate, and the lubricating oil can be thrown into the internal oil channel 5. Then the lubricating oil in the internal oil channel 5 flows to the bearing chamber at the left end of the first rotating shaft and the bearing at the right end of the first rotating shaft through the oil inlet 8 and the oil guide channel 11 respectively. Then the lubricating oil in the bearing chamber at the left end of the first rotating shaft will flow back to the interior of the reduction gear box 101 again through the oil return port 9, thereby realizing the circulation of the lubricating oil and improving the heat dissipation performance and lubrication effect of the bearing inside the shell.

[0057] Combined with a thinner shell designed to increase the degree of lightweight, the heat dissipation and lubrication performance of the shell can be further improved, greatly improving the reliability of the shell.

[0058] And part of the lubricating oil in the internal oil channel 5 can be intermittently pumped into the monitoring box 14 through the oil pump and the liquid inlet pipe 15, and then part of the lubricating oil flows through the first guide plate 17 to the concave arc surface of the arc plate 171 and finally flows to the bottom of the monitoring box 14. The turbidity of the lubricating oil temporarily stored at the concave arc surface of the arc plate 171 can be monitored by the liquid turbidity sensor 20. When the turbidity is higher than the set threshold, the oil pump is started to cooperate with the liquid delivery pipe to deliver the lubricating oil additive in the additive box 18 into the monitoring box 14, and the motor 19 is started to drive the stirring rod 192 to rotate through the rotating rod 191 so that the lubricating oil and the lubricating oil additive are mixed and finally sent into the reduction gear box 101 by the oil pump and the discharge pipe 16. In this way, the lubricant additive and the lubricating oil in the reduction gear box 101 can be mixed faster to purify the lubricating oil, extend the service life of the lubricating oil and reduce the damage of the deteriorated lubricating oil to the inner wall and internal components of the reduction gear box 101.

[0059] When the turbidity of the lubricating oil is still higher than the set threshold after adding the lubricating oil additive for multiple times, it is prompted to replace the lubricating oil in the reduction gear box 101.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric drive axle reducer housing, comprising: The reduction gearbox (101) is characterized in that it also includes: two differential bearing seats (102) symmetrically fixedly connected to the bottom end of the reduction gearbox (101); a connecting plate (103) is fixedly connected to the left side of the reduction gearbox (101); a first circular hole and a second circular hole are opened on the left side of the connecting plate (103); a first bearing seat (1031) and a second bearing seat (1032) are symmetrically fixedly connected to the left side wall of the reduction gearbox (101); a first rotating shaft and a second rotating shaft are rotatably connected in the first bearing seat (1031) and the second bearing seat (1032) through bearings respectively; the left ends of the first bearing seat (1031) and the second bearing seat (1032) are respectively connected to the first circular hole and the right ends of the second circular hole; and a large flange (104) is fixedly connected to the bottom end of the reduction gearbox (101); The outer shape of the reduction gear box (101) is designed to match the overall contour of the internal mounting components; the outer wall of the reduction gear box (101) has a uniform wall thickness at various locations; and a plurality of second support ribs (2) are fixedly connected at equal intervals between the right side surface of the connecting plate (103) and the outer wall of the reduction gear box (101) along the contour direction of the outer wall of the reduction gear box (101).

2. The electric drive axle reducer housing according to claim 1, characterized in that: Two sets of third support ribs (3) are symmetrically fixedly connected between the two sides of the differential bearing seats (102) that are away from each other and the bottom surface of the reduction gear box (101), and two fourth support ribs (10) are symmetrically fixedly connected between the top and bottom of the differential bearing seats (102) and the bottom surface of the reduction gear box (101).

3. The electric drive axle reducer housing according to claim 2, characterized in that: A first supporting rib (1) is fixedly connected between the left side surface of the connecting plate (103) and the top surface of the large flange (104).

4. The electric drive axle reducer housing according to claim 3, characterized in that: Two grooves (1021) are symmetrically provided at the bottom of the two differential bearing seats (102); a sixth support rib (6) is fixedly connected between the left side surface of the differential bearing seat (102) located on the right and the bottom surface of the reduction gear box (101); a seventh support rib (12) is fixedly connected between the right side surface of the differential bearing seat (102) located on the left and the bottom surface of the reduction gear box (101); an inner circular groove is provided on the left side surface of the connecting plate (103); a first circular hole and a second circular hole are provided on the right inner wall of the inner circular groove; and a plurality of reinforcing ribs (7) are fixedly connected at equal angles in a ring shape between the inner side wall and the right inner wall of the inner circular groove.

5. The electric drive axle reducer housing according to claim 4, characterized in that: The groove (1021) at the bottom of the differential bearing seat (102) is arched.

6. The electric drive axle reducer housing according to claim 5, characterized in that: The first bearing seat (1031) and the second bearing seat (1032) are both fixedly connected to the left inner wall of the reduction gear box (101), and the outer walls of the first bearing seat (1031) and the second bearing seat (1032) are both fixedly connected to the right side surface of the connecting plate (103) in a circular shape with equal angles to form a plurality of fifth supporting ribs (4).

7. The electric drive axle reducer housing according to claim 6, characterized in that: The reduction gear box (101) is provided with a circulation transmission structure for driving the circulation of lubricating oil, the circulation transmission structure comprising an internal oil passage (5) provided on the left inner wall of the reduction gear box (101), the circulation transmission structure further comprising an oil inlet (8) and an oil return port (9) provided on the inner wall of the first bearing seat (1031), the oil inlet (8) being connected to the internal oil passage (5), the oil return port (9) being connected to the inner cavity of the reduction gear box (101), an oil guide passage (11) being provided on the inner wall of the reduction gear box (101), the left end of the oil guide passage (11) being connected to the internal oil passage (5), the right end of the oil guide passage (11) being aligned with the bearing connected to the right end of the first rotating shaft, the bearing connected to the right end of the first rotating shaft being fixedly connected to the right inner wall of the reduction gear box (101).

8. The electric drive axle reducer housing according to claim 7, characterized in that: A monitoring box (14) is fixedly connected to the front side wall of the reduction gear box (101) via a bracket (141); a liquid inlet pipe (15) and a liquid discharge pipe (16) are connected to the back of the monitoring box (14); the ends of the liquid inlet pipe (15) and the liquid discharge pipe (16) away from the monitoring box (14) both penetrate the front side wall of the reduction gear box (101) and are connected to the front side wall of the internal oil passage (5); an oil pump is installed on the liquid inlet pipe (15) and the liquid discharge pipe (16); a first guide plate (17) and an arc plate are fixedly connected between the left and right inner side walls of the monitoring box (14) (171), the top of the first guide plate (17) is close to the liquid inlet end of the liquid inlet pipe (15), the bottom end of the first guide plate (17) is fixedly connected to the top of the arc plate (171), the concave arc surface of the arc plate (171) faces upward to temporarily store the lubricating oil, the front side wall of the monitoring box (14) is installed with a liquid turbidity sensor (20), the liquid turbidity sensor (20) is located on the concave arc surface of the arc plate (171) to be immersed in the temporarily stored lubricating oil, and the right side of the monitoring box (14) is installed with a transparent observation window (142).

9. The electric drive axle reducer housing according to claim 8, characterized in that: The front side of the monitoring box (14) is fixedly connected to an additive box (18), the top of the additive box (18) is connected to a liquid injection pipe (181), the back side of the additive box (18) is connected to a liquid delivery pipe, an oil pump is installed on the liquid delivery pipe, and the liquid delivery pipe extends into the interior of the monitoring box (14), the right side of the monitoring box (14) is fixedly connected to a motor (19), the output end of the motor (19) passes through the right side wall of the monitoring box (14) and is fixedly connected to a rotating rod (191), and a plurality of stirring rods (192) are fixedly connected to the outer peripheral surface of the rotating rod (191).

10. The electric drive axle reducer housing according to claim 9, characterized in that: An inclined guide plate (193) is fixedly connected between the left and right inner side walls of the monitoring box (14); the top end of the inclined guide plate (193) is located in front of the bottom end of the arc plate (171); the bottom end of the inclined guide plate (193) is located in front of the bottom end of the first guide plate (17); and the motor (19) drives the rotating rod (191) to rotate clockwise.

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