Double-cavity electric drive axle main shell applied to new energy commercial vehicle and electric drive axle

Abstract

The specification discloses a double-cavity electric drive axle main shell applied to a new energy commercial vehicle and an electric drive axle, and relates to the technical field of vehicles. The double-cavity electric drive axle main shell comprises a main shell, a partition wall and a plugging bolt. The partition wall is inside the main shell, and divides the space inside the main shell into a first cavity and a second cavity. A first through hole is formed in the bottom of the first cavity of the partition wall. At least part of the space of the second cavity is below the first cavity, and a second through hole is formed in the position corresponding to the first through hole at the bottom of the main shell. The first through hole is provided with an internal thread. The plugging bolt comprises a threaded part, a sealing part and a bolt head, and the threaded part can plug the first through hole. The sealing part can plug the second through hole. It can be seen that the sealing of the first cavity and the second cavity is realized by one plugging bolt. When the lubricating oil in the first cavity and the second cavity is released, only the plugging bolt needs to be disassembled, which improves the efficiency and is simple to operate.

Description

Technical Field

[0001] This specification relates to the field of vehicle technology, and in particular to a dual-cavity electric drive axle main housing and electric drive axle for use in new energy commercial vehicles. Background Technology

[0002] Electric drive axles typically include gear housings and differential housings, which respectively house the transmission gears and planetary differentials. Furthermore, both the transmission gears and planetary differentials require a large amount of lubricating oil for lubrication during operation.

[0003] In the existing technology, the bottom of the gear cavity and the differential cavity are respectively provided with drain bolts, but the removal and replacement of drain bolts is cumbersome, and the efficiency and labor cost are low when changing the lubricating oil in the gear cavity and the differential cavity. Utility Model Content

[0004] This specification provides a dual-cavity electric drive axle main housing and electric drive axle for use in new energy commercial vehicles, so as to at least partially solve the above-mentioned problems existing in the prior art.

[0005] The following technical solution is adopted in this specification:

[0006] This specification provides a dual-cavity electric drive axle main housing for new energy commercial vehicles, including the main housing, isolation wall, and sealing bolts;

[0007] The partition wall is located inside the main housing, dividing the space inside the main housing into a first chamber and a second chamber; the bottom of the first chamber is the partition wall, and the partition wall at the bottom of the first chamber has a first through hole; at least a portion of the space of the second chamber is below the first chamber, and a second through hole is provided at the bottom of the main housing corresponding to the first through hole; the first through hole is provided with an internal thread;

[0008] The sealing bolt includes a threaded portion, a sealing portion, and a bolt head. The size of the threaded portion is adapted to the size of the first through hole, and it can seal the first through hole. The sealing portion can seal the second through hole.

[0009] Preferably, the size of the sealing bolt is adapted to the position of the first through hole and the second through hole, so that when the threaded part is in close contact with the first through hole, the sealing part is in close contact with the second through hole.

[0010] Preferably, the distance between the first through hole and the second through hole is adapted to the size of the sealing bolt.

[0011] Preferably, the sealing bolt includes a magnet portion and a sealing element;

[0012] The diameter of the sealing part is larger than the diameter of the threaded part;

[0013] The magnet part is located at the first end of the threaded part, and the magnet part is used to attract magnetic debris in the first chamber;

[0014] The sealing part is provided with a groove in the direction of the threaded part, and the sealing element fills the inside of the groove;

[0015] The sealing element is an O-ring or a gasket.

[0016] Preferably, the first through hole is located at the lowest point of the first chamber in the vertical direction.

[0017] Preferably, the first chamber is used to house the gear set and gear lubricating oil;

[0018] The second chamber is used to house the planetary gear differential and differential lubricating oil.

[0019] Preferably, the gear lubricating oil is the same as the differential lubricating oil.

[0020] Preferably, the first chamber and / or the second chamber are further provided with an air inlet and an air inlet cover;

[0021] The air intake cover can be opened and closed, and when the air intake cover is closed, it can block the air intake hole.

[0022] On the other hand, this specification provides an electric drive axle, which includes the dual-cavity electric drive axle main housing for new energy commercial vehicles provided in the above-mentioned aspect.

[0023] On the other hand, this specification provides a new energy commercial vehicle, which includes the dual-cavity electric drive axle main housing for new energy commercial vehicles provided in the above-mentioned aspect or the electric drive axle provided in the above-mentioned aspect.

[0024] The above-mentioned technical solutions adopted in this specification can achieve the following beneficial effects:

[0025] According to the above, the dual-chamber electric drive axle main housing for new energy commercial vehicles includes a main housing, a partition wall, and a sealing bolt. The partition wall is located inside the main housing, dividing the internal space into a first chamber and a second chamber. The bottom of the first chamber is the partition wall, and a first through hole is formed in the partition wall at the bottom of the first chamber. At least a portion of the space in the second chamber is located below the first chamber, and a second through hole is formed at a position on the bottom of the main housing corresponding to the first through hole. The first through hole has internal threads. The sealing bolt includes a threaded portion, a sealing portion, and a bolt head. The size of the threaded portion is adapted to the size of the first through hole, enabling it to seal the first through hole. The sealing portion can seal the second through hole.

[0026] As can be seen, the first and second chambers are sealed using only a single sealing bolt. Releasing the lubricating oil from the first and second chambers requires only removing this sealing bolt, improving efficiency and simplifying operation. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this specification and form part of this specification, illustrate exemplary embodiments and are used to explain this specification, but do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 A partial structural schematic diagram of a dual-cavity electric drive axle main housing for use in new energy commercial vehicles, provided as an embodiment of this specification;

[0029] Figure 2 A partial structural schematic diagram of a dual-cavity electric drive axle main housing for use in new energy commercial vehicles, provided as an embodiment of this specification;

[0030] Figure 3 A schematic cross-sectional view of section A-Aˋ provided for one embodiment of this specification;

[0031] Figure 4 A schematic cross-sectional view of section B-Bˋ provided for one embodiment of this specification;

[0032] Figure 5 To and Figure 3 A schematic diagram showing the location of the corresponding section A-Aˋ;

[0033] Figure 6 To and Figure 4 A schematic diagram showing the location of the corresponding section B-Bˋ;

[0034] Figure 7 A schematic diagram of the sealing bolt provided for one embodiment of this specification;

[0035] Figure 8A schematic diagram of the sealing bolt provided for one embodiment of this specification;

[0036] Figure 9 A schematic cross-sectional view of the sealing bolt corresponding to section A-Aˋ is provided for one embodiment of this specification;

[0037] Figure 10 A partial structural schematic diagram of a dual-cavity electric drive axle main housing for use in new energy commercial vehicles, provided as an embodiment of this specification;

[0038] Figure 11 This is a partial structural schematic diagram of a dual-cavity electric drive axle main housing for use in new energy commercial vehicles, provided as an embodiment of this specification.

[0039] Explanation of reference numerals in the attached figures:

[0040] Main housing 1; isolation wall 2; sealing bolt 3; first chamber 11; second chamber 12; first through hole 111; second through hole 112; threaded part 31; sealing part 32; bolt head 33; magnet part 34; sealing element 35. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this specification clearer, the technical solutions of this specification will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without creative effort are within the scope of protection of this application.

[0042] In the description of this invention, it should be noted that the term "or" is generally used to include the meaning of "and / or" unless otherwise expressly stated in the content.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0044] Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, those skilled in the art can obtain [the following] without creative effort.

[0045] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0046] Figure 1This is a partial structural schematic diagram of a dual-cavity electric drive axle main housing 1 for use in new energy commercial vehicles, provided as an embodiment of this specification. Figure 1 As shown, the dual-cavity electric drive axle main housing 1 used in new energy commercial vehicles includes a main housing 1, an isolation wall 2, and sealing bolts 3.

[0047] Preferably, the partition wall 2 is located inside the main housing 1, and the partition wall 2 divides the space inside the main housing 1 into a first chamber 11 and a second chamber 12, specifically as follows: Figure 2 As shown. Figure 2 This is a partial structural schematic diagram of a dual-cavity electric drive axle main housing 1 for use in new energy commercial vehicles, provided as an embodiment of this specification.

[0048] Preferably, the bottom of the first chamber 11 is the isolation wall 2, and the isolation wall 2 at the bottom of the first chamber 11 has a first through hole 111.

[0049] More preferably, the first chamber 11 is located at its lowest point. For example... Figure 2 As shown.

[0050] Preferably, at least a portion of the space of the second chamber 12 is located below the first chamber 11, and the second through hole 112 is provided at the bottom of the main housing 1 at a position corresponding to the first through hole 111. Figure 2 As shown.

[0051] Preferably, the first through hole 111 is provided with an internal thread.

[0052] Figure 3 A schematic cross-sectional view of section A-Aˋ provided for one embodiment of this specification. Figure 4 A schematic cross-sectional view of section B-Bˋ provided for one embodiment of this specification. Figure 5 To and Figure 3 A schematic diagram of the corresponding section A-Aˋ. Figure 6 To and Figure 4 A schematic diagram showing the location of the corresponding section B-Bˋ. Figure 3 Sealing bolt 3 is not shown. Figure 4 The sealing bolt 3 is shown. (As shown) Figure 3 As shown, the first through hole 111 is provided with an internal thread.

[0053] Preferably, the sealing bolt 3 includes a threaded portion 31, a sealing portion 32, and a bolt head 33.

[0054] Figure 7 as well as Figure 8 These are all schematic diagrams of the sealing bolt 3 provided in one embodiment of this specification, such as... Figure 7 , Figure 8As shown, the sealing bolt 3 includes a threaded portion 31, a sealing portion 32, and a bolt head 33.

[0055] Preferably, the size of the threaded portion 31 is adapted to the size of the first through hole 111, which can block the first through hole 111.

[0056] Preferably, the sealing part 32 is capable of blocking the second through hole 112.

[0057] According to the above, the dual-chamber electric drive axle main housing 1 used in new energy commercial vehicles includes a main housing 1, an isolation wall 2, and a sealing bolt 3. The isolation wall 2 is located inside the main housing 1, dividing the internal space of the main housing 1 into a first chamber 11 and a second chamber 12. The bottom of the first chamber 11 is the isolation wall 2, and a first through hole 111 is formed in the isolation wall 2 at the bottom of the first chamber 11. At least a portion of the space in the second chamber 12 is located below the first chamber 11, and a second through hole 112 is formed at the bottom of the main housing 1 at a position corresponding to the first through hole 111. The first through hole 111 is provided with internal threads. The sealing bolt 3 includes a threaded portion 31, a sealing portion 32, and a bolt head 33. The size of the threaded portion 31 is adapted to the size of the first through hole 111, enabling it to seal the first through hole 111. The sealing portion 32 can seal the second through hole 112.

[0058] As can be seen, the first chamber 11 and the second chamber 12 are sealed by only one sealing bolt 3. When releasing the lubricating oil in the first chamber 11 and the second chamber 12, only the sealing bolt 3 needs to be removed, which improves efficiency and simplifies operation.

[0059] Preferably, the surface of the threaded portion 31 is provided with an external thread, and the external thread is adapted to the internal thread provided in the first through hole 111.

[0060] Preferably, the size of the sealing bolt 3 is adapted to the positions of the first through hole 111 and the second through hole 112, such that when the threaded portion 31 is in close contact with the first through hole 111, the sealing portion 32 is in close contact with the second through hole 112. Specifically, as follows... Figure 1 , Figure 4 As shown.

[0061] Preferably, the distance between the first through hole 111 and the second through hole 112 is less than or equal to 5 cm.

[0062] Preferably, the distance between the first through hole 111 and the second through hole 112 is adapted to the size of the sealing bolt 3.

[0063] Preferably, the sealing bolt 3 includes a magnet portion 34 and a seal 35. Figure 9A schematic cross-sectional view of the sealing bolt 3 corresponding to section A-Aˋ is provided for one embodiment of this specification. For example... Figure 9 As shown, the sealing bolt 3 includes a magnet part 34 and a seal 35.

[0064] More preferably, the diameter of the sealing portion 32 is larger than the diameter of the threaded portion 31.

[0065] More preferably, the magnet portion 34 is located at the first end of the threaded portion 31, and the magnet portion 34 is used to attract magnetic debris in the first chamber 11.

[0066] More preferably, the sealing portion 32 is provided with a groove in the direction of the threaded portion 31, and the sealing member 35 fills the inside of the groove.

[0067] More preferably, the seal 35 is an O-ring or a gasket.

[0068] Preferably, the first through hole 111 is located at the lowest point of the first chamber 11 in the vertical direction.

[0069] Figure 10 as well as Figure 11 These are partial structural schematic diagrams of a dual-cavity electric drive axle main housing 1 used in new energy commercial vehicles, provided as an embodiment of this specification. Figure 10 as well as Figure 11 As shown, the position of the first through hole 111 is the lowest point of the first chamber 11 in the vertical direction.

[0070] Preferably, the first chamber 11 is used to house the gear set and gear lubricating oil.

[0071] Preferably, the second chamber 12 is used to house the planetary gear differential and differential lubricating oil.

[0072] Preferably, the gear lubricant is the same as the differential lubricant.

[0073] Preferably, the first chamber 11 and / or the second chamber 12 are further provided with an air inlet and an air inlet cover.

[0074] Preferably, the air intake cover can be opened and closed, and when the air intake cover is closed, it can block the air intake hole.

[0075] The above is an embodiment of the dual-cavity electric drive axle main housing 1 for new energy commercial vehicles provided in this specification. Based on the same idea, this specification also provides an electric drive axle.

[0076] Preferably, the electric drive axle includes the dual-cavity electric drive axle main housing 1 for new energy commercial vehicles provided in any of the above embodiments.

[0077] The above is an embodiment of the dual-cavity electric drive axle main housing 1 and electric drive axle provided in this specification for use in new energy commercial vehicles. Based on the same idea, this specification also provides a new energy commercial vehicle.

[0078] Preferably, the new energy commercial vehicle includes the dual-cavity electric drive axle main housing 1 or electric drive axle provided in any of the above embodiments for use in new energy commercial vehicles.

[0079] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0080] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0081] The above description is merely an embodiment of this specification and is not intended to limit this specification. Various modifications and variations can be made to this specification by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of the claims of this application.

Claims

1. A dual-cavity electric drive axle main housing for use in new energy commercial vehicles, characterized in that, The dual-cavity electric drive axle main housing used in new energy commercial vehicles includes a main housing, an isolation wall, and sealing bolts; The partition wall is located inside the main housing, dividing the space inside the main housing into a first chamber and a second chamber; the bottom of the first chamber is the partition wall, and the partition wall at the bottom of the first chamber has a first through hole; at least a portion of the space of the second chamber is below the first chamber, and a second through hole is provided at the bottom of the main housing corresponding to the first through hole; the first through hole is provided with an internal thread; The sealing bolt includes a threaded portion, a sealing portion, and a bolt head. The size of the threaded portion is adapted to the size of the first through hole, and it can seal the first through hole. The sealing portion can seal the second through hole.

2. The dual-cavity electric drive axle main housing for new energy commercial vehicles according to claim 1, characterized in that, The size of the sealing bolt is adapted to the position of the first through hole and the second through hole, so that when the threaded part is in close contact with the first through hole, the sealing part is in close contact with the second through hole.

3. The dual-cavity electric drive axle main housing for new energy commercial vehicles according to claim 1, characterized in that, The distance between the first through hole and the second through hole is adapted to the size of the sealing bolt.

4. The dual-cavity electric drive axle main housing for new energy commercial vehicles according to claim 1, characterized in that, The sealing bolt includes a magnet and a sealing element; The diameter of the sealing part is larger than the diameter of the threaded part; The magnet part is located at the first end of the threaded part, and the magnet part is used to attract magnetic debris in the first chamber; The sealing part is provided with a groove in the direction of the threaded part, and the sealing element fills the inside of the groove; The sealing element is an O-ring or a gasket.

5. The dual-cavity electric drive axle main housing for new energy commercial vehicles according to any one of claims 1-4, characterized in that, The first through hole is located at the lowest point of the first chamber in the vertical direction.

6. The dual-cavity electric drive axle main housing for new energy commercial vehicles according to any one of claims 1-4, characterized in that, The first chamber is used to house the gear set and gear lubricating oil; The second chamber is used to house the planetary gear differential and differential lubricating oil.

7. The dual-cavity electric drive axle main housing for new energy commercial vehicles according to claim 6, characterized in that, The gear lubricating oil is the same as the differential lubricating oil.

8. The dual-cavity electric drive axle main housing for new energy commercial vehicles according to any one of claims 1-4, characterized in that, The first chamber and / or the second chamber are further provided with an air inlet and an air inlet cover; The air intake cover can be opened and closed, and when the air intake cover is closed, it can block the air intake hole.

9. An electric drive bridge, characterized in that, The electric drive axle includes the dual-cavity electric drive axle main housing for new energy commercial vehicles as described in any one of claims 1-8.

10. A new energy commercial vehicle, characterized in that, Includes the dual-cavity electric drive axle main housing for new energy commercial vehicles as described in any one of claims 1-8 or the electric drive axle as described in claim 9.

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