Electric drive housing, reduction gear and drive assembly

Abstract

The utility model discloses a kind of electric drive shell, speed reducer and drive assembly, it is related to the technical field of speed reducer lubrication cooling, wherein, electric drive shell includes shell, oil groove and oil guide part;Shell is equipped with first installation site and second installation site, first installation site is used to install power generation end gear and power generation end bearing, second installation site is used to install driving end gear and driving end bearing;Oil groove is located between the bottom of shell and first installation site, and oil groove is used to store lubricating oil;Oil guide part is connected with oil groove and extends to the vicinity of driving end bearing;Wherein, power generation end gear is used to throw the lubricating oil in oil groove to power generation end bearing and oil guide part in rotating process, and oil guide part is used to guide lubricating oil to driving end bearing.The technical scheme provided by the utility model can reduce the oil stirring loss of speed reducer, to improve the working efficiency of speed reducer.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer lubrication and cooling technology, and in particular to an electric drive housing, a speed reducer, and a drive assembly. Background Technology

[0002] In the design of new energy oil-cooled drive assemblies, in order to simultaneously meet the lubrication needs of the drive end and the power generation end, the relevant technologies usually adopt the method of increasing the oil volume to meet the gear shaft lubrication needs. However, the increase in oil volume will lead to large oil churning losses in the reducer, resulting in low reducer working efficiency. Utility Model Content

[0003] The main purpose of this invention is to provide an electric drive housing, a reducer, and a drive assembly, which aims to reduce the oil churning loss in the reducer and improve the working efficiency of the reducer.

[0004] To achieve the above objectives, this utility model proposes an electrically driven housing, comprising: The housing has a first mounting position and a second mounting position. The first mounting position is used to install the generator end gear and the generator end bearing, and the second mounting position is used to install the drive end gear and the drive end bearing. An oil tank is provided between the bottom of the housing and the first mounting position, and the oil tank is used to store lubricating oil. An oil guide section, which is connected to the oil groove and extends to the vicinity of the drive end bearing; During rotation, the generator end gear is used to throw the lubricating oil in the oil sump toward the generator end bearing and the oil guide part, and the oil guide part is used to guide the lubricating oil to the drive end bearing.

[0005] In one embodiment, the electric drive housing further includes an oil baffle plate, which is disposed between the bottom of the housing and the first mounting position, and the oil baffle plate is located at least 1 / 4 of the outer periphery of the generator end gear in the circumferential direction. The upper surface of the oil baffle plate near the first mounting position and the housing enclose each other to form the oil groove.

[0006] In one embodiment, the oil baffle includes: The first plate is located below the first mounting position; The second plate has one side connected to the side of the first plate near the second mounting position, and the other side of the second plate extends toward the first mounting position so that the second plate and the first plate are set at an angle. The first plate, the second plate, and the shell together form the oil groove.

[0007] In one embodiment, the side of the second plate away from the first plate is inclined toward the direction of the second mounting position.

[0008] In one embodiment, the oil guiding part includes an oil guiding plate, one side of which is connected to the top edge of the oil baffle plate.

[0009] In one embodiment, the side of the oil guide plate away from the oil baffle plate is closer to the drive end bearing than the side connected to the oil baffle plate, and there is a height difference between the side of the oil guide plate away from the oil baffle plate and the side of the oil guide plate connected to the oil baffle plate.

[0010] In one embodiment, the oil guide plate is provided with an oil guide groove, which is used to guide lubricating oil to the drive end bearing.

[0011] In one embodiment, the oil guide plate has a clearance portion on one side, which is used to avoid the drive end gear.

[0012] In one embodiment, the housing is provided with a motor-side oil return hole, which is connected to the oil sump.

[0013] To achieve the above objectives, this utility model also proposes a speed reducer, comprising: The electrically driven housing and cover plate as described above.

[0014] In one embodiment, one side of the oil tank is connected to the housing, and the other side of the oil tank is connected to the end cap.

[0015] To achieve the above objectives, this utility model also proposes a drive assembly, including the speed reducer described above.

[0016] The technical solution of this utility model adds an oil groove between the bottom of the housing and the first mounting position, thus directly constructing the oil groove below the first mounting position, i.e., directly at the bottom of the generator gear. This design allows for direct supply of lubricating oil to the oil groove, essentially raising the oil groove to the bottom of the generator gear. This means that a smaller amount of oil is needed for the generator gear to contact the lubricating oil in the groove, reducing the amount of oil required for the generator gear during churning. During rotation, the generator gear throws the lubricating oil from the oil groove towards the generator bearing and the oil guide, lubricating the generator bearing. Simultaneously, the oil guide directs the lubricating oil to the drive bearing for lubrication. This eliminates the need to increase the amount of oil needed for lubrication of both the drive and generator ends, reducing the amount of oil required for gearbox lubrication, thus reducing churning losses, improving gearbox efficiency, and simultaneously achieving weight reduction. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of an embodiment of the electrically driven housing provided by this utility model; Figure 2 This is a schematic diagram of a structure of an embodiment of the speed reducer provided by this utility model; Figure 3 This is a front view of an embodiment of the speed reducer provided by this utility model.

[0019] Explanation of icon numbers:

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] In the design of new energy oil-cooled drive assemblies, in order to simultaneously meet the lubrication needs of the drive end and the power generation end, the relevant technologies usually adopt the method of increasing the oil volume to meet the gear shaft lubrication needs. However, the increase in oil volume will lead to large oil churning losses in the reducer, resulting in low reducer working efficiency.

[0025] Based on the above problems, this utility model proposes an electric drive housing 100, which aims to reduce the oil churning loss of the reducer 1000 and improve the working efficiency of the reducer 1000.

[0026] Please see Figures 1 to 3 In one embodiment of this utility model, the electric drive housing 100 includes a housing 10, an oil groove 20a, and an oil guide 30. The housing 10 is provided with a first mounting position a and a second mounting position b. The first mounting position a is used to mount the generator end gear 220 and the generator end bearing 210, and the second mounting position b is used to mount the drive end gear 320 and the drive end bearing 310. The oil groove 20a is located between the bottom of the housing 10 and the first mounting position a, and the oil groove 20a is used to store lubricating oil. The oil guide 30 is connected to the oil groove 20a and extends to the vicinity of the drive end bearing 310. During rotation, the generator end gear 220 is used to throw the lubricating oil in the oil groove 20a toward the generator end bearing 210 and the oil guide 30, and the oil guide 30 is used to guide the lubricating oil to the drive end bearing 310.

[0027] The technical solution of this utility model adds an oil groove 20a between the bottom of the housing 10 and the first mounting position a, so that the oil groove 20a can be directly constructed below the first mounting position a, that is, the oil groove 20a can be directly constructed at the bottom of the generator gear 220. This design can directly provide lubricating oil into the oil groove 20a, which is equivalent to raising the oil groove 20a storing lubricating oil to the bottom of the generator gear 220. In this way, a smaller amount of oil is needed to make the generator gear 220 contact with the lubricating oil in the oil groove 20a, reducing the amount of oil required by the generator gear 220 when agitating the oil. That is, the lubrication needs of the generator gear 220 can be met with a smaller amount of oil. During rotation, the generator-end gear 220 throws the lubricating oil in the oil groove 20a toward the generator-end bearing 210 and the oil guide part 30 to lubricate the generator-end bearing 210. At the same time, the oil guide part 30 guides the lubricating oil to the drive-end bearing 310 to lubricate the drive-end bearing 310. Therefore, it is not necessary to increase the amount of oil to meet the lubrication needs of the drive end and the generator end, which reduces the oil churning requirements of the reducer 1000, thereby reducing the oil churning loss of the reducer 1000, improving the working efficiency of the reducer 1000, and achieving the purpose of weight reduction.

[0028] In this embodiment, the housing 10 is part of the gearbox housing of the reducer 1000. The housing 10 is used to install and fix the generator end gear 220, generator end bearing 210, drive end gear 320, drive end bearing 310, oil baffle 20, generator, and other structures. The housing 10 may have a first side and a second side facing each other. The first side of the housing 10 has a first mounting position a and a second mounting position b, so that the generator end gear 220, generator end bearing 210, drive end gear 320, drive end bearing 310, and oil baffle 20 are all installed on the first side of the housing 10, and the motor is installed on the second side of the housing 10.

[0029] In practical applications, an oil groove 20a can be formed directly on one side plate of the housing 10, or an oil baffle 20 or other added structures can be used to enclose the oil groove 20a with the housing 10. Specifically, lubricating oil can be supplied to the oil groove 20a from the oil return hole 11 on the motor side, or lubricating oil can be supplied directly to the oil groove 20a from the outside.

[0030] The oil guide part 30 is used to guide the lubricating oil to the drive end bearing 310 to lubricate the drive end bearing 310. The oil guide part 30 can be an oil guide plate 31 or an oil guide groove, as long as it can smoothly guide the lubricating oil thrown out from the oil groove 20a during the operation of the generator end gear 220 to the drive end bearing 310.

[0031] The lubricating oil in the oil tank 20a is agitated by the operation of the generator end gear 220, so as to throw the lubricating oil in the oil tank 20a toward the generator end bearing 210 and the oil guide part 30. The lubricating oil thrown into the oil guide part 30 can be guided to the drive end bearing 310 through the oil guide part 30. At the same time, the remaining lubricating oil flows out of the oil tank 20a and returns to the gearbox of the reducer 1000, so that this part of the lubricating oil flows back to the motor side and participates in the agitation and lubrication of the drive end gear 320.

[0032] Please see Figures 1 to 3 In one embodiment of the present invention, the electric drive housing 100 further includes an oil baffle 20, which is disposed between the bottom of the housing 10 and the first mounting position a, and the oil baffle 20 is located at least 1 / 4 of the outer periphery of the generator end gear 220. The upper surface of the oil baffle 20 near the first mounting position a forms an oil groove 20a with the housing 10.

[0033] With this configuration, by adding an oil baffle 20 to one side of the housing 10, the oil baffle 20 and the housing 10 can be enclosed to form an oil groove 20a, thus creating a double-layer oil shell design. This allows the oil groove 20a to be directly constructed below the first mounting position a, making it easier to construct the oil groove 20a at the bottom of the generator gear 220. Furthermore, by positioning the oil baffle 20 at least 1 / 4 of the circumference of the generator gear 220, the lubricating oil in the oil groove 20a can be more easily thrown towards the generator bearing 210 and the oil guide 30 during the rotation of the generator gear 220, thus lubricating the generator bearing 210. Simultaneously, the oil guide 30 directs the lubricating oil to the drive bearing 310 for lubrication.

[0034] An oil baffle 20 is disposed on one side of the housing 10. The oil baffle 20 can be integrally formed with the housing 10. Of course, the oil baffle 20 can be connected to the housing 10 by welding, screw connection or other means to form an oil groove 20a with the housing 10.

[0035] Please see Figures 1 to 3 In one embodiment of the present invention, the oil baffle 20 includes a first plate 21 and a second plate 22; the first plate 21 is located below the first mounting position a; one side of the second plate 22 is connected to the side of the first plate 21 near the second mounting position b, and the other side of the second plate 22 extends toward the first mounting position a, so that the second plate 22 and the first plate 21 are arranged at an angle, and the first plate 21, the second plate 22 and the housing 10 surround to form an oil groove 20a.

[0036] In this embodiment, the first plate 21 of the oil baffle 20 can form a flat bottom portion, and the second plate 22 can form an inclined portion that forms an angle with the flat portion.

[0037] With this configuration, by designing the oil baffle 20 as a first plate 21 and a second plate 22 arranged at an angle, the oil storage height of the oil tank 20a can be controlled by the height design of the second plate 22, so that the oil tank 20a can store enough lubricating oil for the generator end gear 220 to stir the oil.

[0038] In some embodiments, the side of the first plate 21 away from the second plate 22 can be connected to the flange 12 of the housing 10 so that the first plate 21, the second plate 22, the housing 10, and the flange 12 of the housing 10 form a U-shaped oil groove 20a. This design can improve the ability of the oil groove 20a to store enough lubricating oil, so that the generator end can throw more lubricating oil to the generator end bearing 210 and the oil guide 30 during operation.

[0039] Please see Figure 3 In one embodiment of the present invention, the side of the second plate 22 away from the first plate 21 is inclined toward the direction of the second mounting position b.

[0040] Since there is an oblique channel between the generator end gear 220 and the drive end gear 230, in order to adapt the second plate 22 to the oblique channel, this embodiment sets the side of the second plate 22 away from the first plate 21 towards the direction close to the second mounting position b. The second plate 22 can be smoothly installed in the oblique channel. This design does not require increasing the space between the generator end gear 220 and the drive end gear 230 by adding the second plate 22, and can avoid increasing the size of the housing 10.

[0041] In addition, the lubricating oil thrown out by the generator end gear 220 during rotation can be more smoothly thrown to the oil guide section 30 through the inclined second plate 22.

[0042] Please see Figures 1 to 3 In one embodiment of the present invention, the oil guiding part 30 includes an oil guiding plate 31, one side of which is connected to the top edge of the oil baffle plate 20.

[0043] With this configuration, by connecting the oil guide plate 31 to the top edge of the oil baffle plate 20, the oil guide plate 31 can be connected to the top port of the oil tank 20a. When the lubricating oil thrown out by the generator gear 220 during operation exceeds the top port of the oil tank 20a, it can flow smoothly to the oil guide plate 31.

[0044] Please see Figure 3 In one embodiment of the present invention, the side of the oil guide plate 31 away from the oil baffle plate 20 is closer to the drive end bearing 310 than the side connected to the oil baffle plate 20, and there is a height difference between the side of the oil guide plate 31 away from the oil baffle plate 20 and the side of the oil guide plate 31 connected to the oil baffle plate 20.

[0045] With this configuration, since there is a height difference between the side of the oil guide plate 31 away from the oil baffle plate 20 and the side of the oil guide plate 31 connected to the oil baffle plate 20, the oil guide plate 31 can guide the lubricating oil more smoothly to the drive end bearing 310 under the action of gravity, thereby improving the lubrication effect on the drive end bearing 310.

[0046] Please see Figure 1 In one embodiment of this utility model, the oil guide plate 31 is provided with an oil guide groove 32, which is used to guide the lubricating oil to the drive end bearing 310.

[0047] With this design, the oil guide groove 32 can guide the lubricating oil more smoothly to the drive end bearing 310, achieving a precise oil guiding effect.

[0048] Please see Figure 1 In one embodiment of the present invention, an avoidance part 33 is provided on one side of the oil guide plate 31, and the avoidance part 33 is used to avoid the drive end gear 320.

[0049] With this configuration, by providing a clearance part 33 on the oil guide plate 31 to avoid the drive end gear 320, interference between the drive end gear 320 and the oil guide plate 31 can be avoided during operation.

[0050] Please see Figure 1 , Figure 3 In one embodiment of the present invention, the housing 10 is provided with a motor-side oil return hole 11, which is connected to the oil trough 20a.

[0051] With this design, the lubricating oil on the motor side can be directly guided to the oil tank 20a through the motor side oil return hole 11, without the need for additional oil supply equipment to provide lubricating oil to the oil tank 20a separately, which simplifies the structural design.

[0052] Please see Figure 2 , Figure 3 The present invention also proposes a speed reducer 1000, which includes an electric drive housing 100 and an end cover. The specific structure of the electric drive housing 100 is as described in the above embodiments. Since the speed reducer adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0053] The reducer also includes a generator end bearing 210, a generator end gear 220, a drive end bearing 310, and a drive end gear 320. The generator end bearing 210 is located at the first mounting position a of the housing 10. The generator end gear 220 is sleeved on the generator end bearing 210 and is located at the first mounting position a. The drive end bearing 310 is located at the second mounting position b of the housing 10. The drive end gear 320 is sleeved on the drive end bearing 310 and is located at the second mounting position b. During rotation, the generator end gear 220 throws the lubricating oil in the oil groove 20a toward the generator end bearing 210 and the oil guide part 30. The oil guide part 30 guides the lubricating oil to the drive end bearing 310.

[0054] Understandably, during rotation, the generator-end gear 220 throws the lubricating oil in the oil groove 20a toward the generator-end bearing 210 and the oil guide 30 to lubricate the generator-end bearing 210. At the same time, the oil guide 30 guides the lubricating oil to the drive-end bearing 310 to lubricate the drive-end bearing 310. This eliminates the need to increase the amount of oil to meet the lubrication requirements of the drive end and the generator end, reducing the oil churning requirements of the reducer 1000, thereby reducing the oil churning loss of the reducer 1000, improving the working efficiency of the reducer 1000, and achieving the goal of weight reduction.

[0055] In practical applications, the generator end gear 220 and generator end bearing 210 can be provided as one set or at least two sets; as long as at least one set of generator end gear 220 is in contact with the lubricating oil in the oil tank 20a, the lubricating oil in the oil tank 20a can be thrown out during the operation of the generator end gear 220. Similarly, the drive end gear 320 and drive end bearing 310 can be provided as one set or at least two sets; the lubricating oil thrown from the oil tank 20a to the guide structure can flow to at least one set of drive end bearings 310.

[0056] In one embodiment of the present invention, one side of the oil tank 20a is connected to the housing 10, and the other side of the oil tank 20a is connected to the end cap.

[0057] This configuration, by connecting the oil trough 20a between the housing 10 and the end cap, makes it easier to form an oil trough 20a for storing lubricating oil. At the same time, when the generator end gear 220 rotates, it throws the lubricating oil in the oil trough 20a towards the generator end bearing 210 and the oil guide part 30. Even if some lubricating oil splashes to other positions, it can be blocked by the housing 10 and the end cap to prevent the lubricating oil from splashing onto other devices and affecting their use.

[0058] This utility model also proposes a drive assembly, which includes a reducer 1000. The specific structure of the reducer 1000 is as described in the above embodiments. Since this drive assembly adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0059] In practical applications, drive assemblies can be used in vehicles, refrigerators, air conditioners, and other equipment.

[0060] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An electrically driven housing, characterized in that, include: The housing has a first mounting position and a second mounting position. The first mounting position is used to install the generator end gear and the generator end bearing, and the second mounting position is used to install the drive end gear and the drive end bearing. An oil tank is provided between the bottom of the housing and the first mounting position, and the oil tank is used to store lubricating oil. An oil guide section, which is connected to the oil groove and extends to the vicinity of the drive end bearing; During rotation, the generator end gear throws the lubricating oil in the oil groove toward the generator end bearing and the oil guide, and the oil guide is used to guide the lubricating oil to the drive end bearing.

2. The electrically driven housing as described in claim 1, characterized in that, The electric drive housing also includes an oil baffle plate, which is disposed between the bottom of the housing and the first mounting position, and the oil baffle plate is located at least 1 / 4 of the outer periphery of the generator end gear. The upper surface of the oil baffle plate near the first mounting position and the housing enclose each other to form the oil groove.

3. The electrically driven housing as described in claim 2, characterized in that, The oil baffle includes: The first plate is located below the first mounting position; The second plate has one side connected to the side of the first plate near the second mounting position, and the other side of the second plate extends toward the first mounting position so that the second plate and the first plate are set at an angle. The first plate, the second plate, and the shell together form the oil groove.

4. The electrically driven housing as described in claim 3, characterized in that, The side of the second plate away from the first plate is inclined toward the direction of the second mounting position.

5. The electrically driven housing as described in claim 2, characterized in that, The oil guiding part includes an oil guiding plate, one side of which is connected to the top edge of the oil baffle plate.

6. The electrically driven housing as described in claim 5, characterized in that, The side of the oil guide plate away from the oil baffle plate is closer to the drive end bearing than the side connected to the oil baffle plate, and there is a height difference between the side of the oil guide plate away from the oil baffle plate and the side of the oil guide plate connected to the oil baffle plate.

7. The electrically driven housing as described in claim 5, characterized in that, The oil guide plate is provided with an oil guide groove, which is used to guide the lubricating oil to the drive end bearing.

8. The electrically driven housing as described in claim 5, characterized in that, The oil guide plate has a clearance part on one side, which is used to avoid the drive end gear.

9. The electrically driven housing as claimed in any one of claims 1 to 8, characterized in that, The housing is provided with a motor-side oil return hole, which is connected to the oil sump.

10. A speed reducer, characterized in that, include: The electric drive housing and end cap as described in any one of claims 1 to 9.

11. The speed reducer as described in claim 10, characterized in that, One side of the oil tank is connected to the housing, and the other side of the oil tank is connected to the end cap.

12. A drive assembly, characterized in that, Including the speed reducer as described in claim 10 or 11.

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