Integrated electric drive axle with power distribution function and vehicle

Abstract

The utility model relates to an integrated electric drive axle with a power distribution function and a vehicle. The integrated electric drive axle with the power distribution function comprises an axle housing, a main speed reducer arranged in the middle of the axle housing and located in front of a traveling vehicle, and a hub speed reducer and a disc brake which are arranged at the two ends of the axle housing respectively. The main speed reducer is longitudinally arranged, meanwhile, the driven bevel gear and the power output flange are arranged at the two ends of the driving bevel gear shaft respectively, power transmission and power distribution are achieved, the main speed reducer has the two-gear speed changing function, and the power performance of a driving system is further improved; and the applicability of the electric drive axle in the field of engineering machinery is more excellent.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy commercial vehicles, in particular to an integrated electric drive axle and a vehicle with a power distribution function. Background Technique

[0002] From the perspective of the technical development trend of the electric drive system of new energy engineering vehicles, the integration, integration and compact structure of the power system are the future development directions. In the conventional electric drive system of loaders, the motor, gearbox and reducer are arranged separately, resulting in redundant vehicle structure, large volume and weight. At the same time, there are more power transmission losses in each unit and lower transmission efficiency.

[0003] The integrated electric drive axle highly integrates the motor, reducer and axle housing, effectively solving the problems of heavy weight and low transmission efficiency of the vehicle transmission system; however, the conventional integrated electric drive axle mostly adopts a parallel shaft transmission structure, which is difficult to achieve power distribution between the front and rear axles. Often, two sets of power systems need to be added to meet the use requirements of all-wheel drive vehicles, resulting in high application costs of the integrated electric drive and severely restricting its popularization and application; at the same time, due to the relatively harsh operating conditions of special equipment such as construction machinery, a single-speed reducer is difficult to meet its use requirements. Therefore, it is necessary to design a multi-speed integrated electric drive axle with front and rear power distribution functions to meet the use requirements of engineering vehicles. Content of the Utility Model

[0004] The purpose of the utility model is to provide an integrated electric drive axle and a vehicle with a power distribution function in view of the deficiencies of the prior art.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] An integrated electric drive axle with a power distribution function includes an axle housing, a main reducer arranged in the middle of the axle housing and in front of the vehicle, and wheel side reducers and disc brakes respectively arranged at both ends of the axle housing.

[0007] Preferably, the main reducer is an integrated two-speed main reducer, including a main reducer housing, and a motor and a reducer arranged in the main reducer housing; the central axis of the motor is perpendicular to the axis of the axle.

[0008] Preferably, the reducer includes a motor shaft, a central gear shaft and an active bevel gear shaft;

[0009] A high-speed gear driving gear, a first-stage reduction gear, and a low-speed gear driving gear are respectively arranged on the central gear shaft; the first-stage reduction gear is fixedly arranged on the central gear shaft; a high-speed gear driven gear, a power engagement sleeve, and a low-speed gear driven gear are respectively arranged on the driving bevel gear shaft; the power engagement sleeve is fixed to the driving bevel gear shaft, and a shift engagement sleeve is arranged on the outer peripheral side of the power engagement sleeve.

[0010] The output end of the motor is splined to the motor shaft; the high-speed gear driving gear is meshed with the high-speed gear driven gear, and the low-speed gear driving gear is meshed with the low-speed gear driven gear; one end of the driving bevel gear shaft is meshed with a driven bevel gear, and the other end is provided with a power output flange.

[0011] Preferably, sliding wear-resistant assemblies are respectively arranged between the high-speed gear driven gear, the low-speed gear driven gear and the driving bevel gear shaft.

[0012] Preferably, both the central gear shaft and the driving bevel gear shaft are of a hollow structure, and lubricating oil holes are arranged at the mating parts of the driving bevel gear shaft with the high-speed gear driven gear and the low-speed gear driven gear respectively.

[0013] Preferably, the main reducer housing includes a motor housing, a reducer housing and a main reducer mounting surface;

[0014] The motor housing is arranged above the reducer housing, and the main reducer mounting surface is fixed to the axle housing.

[0015] Preferably, the wheel side reducer includes a wheel side reducer housing and a wheel hub; a wheel side housing and a planetary carrier structure are integrally arranged on the wheel side reducer housing.

[0016] Preferably, the disc brake includes a plurality of hydraulic brakes connected to the axle housing and a brake disc connected to the wheel hub.

[0017] Preferably, an auxiliary brake is further included; the auxiliary brake is arranged on the main reducer housing;

[0018] An auxiliary brake disc is fixedly arranged on the outer side of the power output flange, and the auxiliary brake disc is braked by the auxiliary brake.

[0019] A vehicle includes an integrated electric drive axle with a power distribution function as described in any one of the above.

[0020] Compared with the prior art, the utility model has the following beneficial technical effects:

[0021] By longitudinally arranging the main reducer and respectively arranging a passive bevel gear and a power output flange at both ends of the driving bevel gear shaft, the present utility model realizes power transmission and power distribution, effectively taking into account the compatibility between the drive systems of 4×4 and 4×2 vehicles, and having better product applicability;

[0022] Through the variable speed design of the main reducer, the vehicle can be adjusted for high and low speeds according to the working conditions and usage requirements, and at the same time, the power disconnection function can be realized, so that the product has more excellent applicability to complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present utility model will be further described below with reference to the drawings:

[0024] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0025] Figure 2 is a top view of the overall structure of the present utility model;

[0026] Figure 3 is a cross-sectional view of the reducer structure of the present utility model;

[0027] Figure 4 is a schematic diagram of the structure of the main reducer housing of the present utility model;

[0028] Figure 5 is a schematic diagram of the structure of the driving bevel gear shaft of the present utility model;

[0029] Figure 6 is a schematic diagram of the structure of the wheel side reducer housing of the present utility model.

[0030] DESCRIPTION OF THE REFERENCE NUMERALS

[0031] Axle housing; 2, Main reducer; 3, Wheel side reducer; 4, Disc brake; 5, Auxiliary brake; 21-1, Motor housing; 21-2, Reducer housing; 21-3, Main reducer mounting surface; 23-1, Motor shaft; 23-2, Central gear shaft; 23-3, Driving bevel gear shaft; 23-4, Driven bevel gear; 23-5, High-speed gear driven gear; 23-6, Power engagement sleeve; 23-7, Low-speed gear driven gear; 23-8, Power output flange; 23-9, Auxiliary brake disc; 23-10, Shift engagement sleeve; 23-11, First-stage reduction gear; 23-12, High-speed gear driving gear; 23-13, Low-speed gear driving gear; 23-14, Sliding wear-resistant assembly; 23-3a, Lubricating oil hole; 31, Wheel side reducer housing; 32, Wheel hub; 31-1, Wheel side housing; 31-2, Planet carrier structure; 41, Hydraulic brake; 42, Brake disc. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other. In the description of the present utility model, it should also be noted that, unless otherwise clearly defined and limited, the terms "set", "installed", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model may be understood according to specific circumstances.

[0033] Embodiment 1

[0034] As Figure 1-6 shown: An integrated electric drive axle with a power distribution function includes a bridge housing 1, a main reducer 2 disposed in the middle of the bridge housing 1 and in front of the vehicle, and wheel side reducers 3 and disc brakes 4 respectively disposed at both ends of the bridge housing 1.

[0035] The main reducer 2 is an integrated two-speed main reducer, including a main reducer housing, and a motor and a reducer disposed in the main reducer housing; the central axis of the motor is perpendicular to the axis of the axle.

[0036] The reducer includes a motor shaft 23-1, a central gear shaft 23-2, and a driving bevel gear shaft 23-3;

[0037] A high-speed gear driving gear 23-12, a first-stage reduction gear 23-11, and a low-speed gear driving gear 23-13 are respectively disposed on the central gear shaft 23-2; the first-stage reduction gear 23-11 is fixedly disposed on the central gear shaft 23-2; a high-speed gear driven gear 23-5, a power engagement sleeve 23-6, and a low-speed gear driven gear 23-7 are respectively disposed on the driving bevel gear shaft 23-3; the power engagement sleeve 23-6 is fixed to the driving bevel gear shaft 23-3, and a shifting engagement sleeve 23-10 is disposed on the outer peripheral side of the power engagement sleeve 23-6; the shifting engagement sleeve 23-10 can move axially;

[0038] The output end of the motor is splined to the motor shaft 23-1; the high-speed gear driving gear 23-12 meshes with the high-speed gear driven gear 23-5, and the low-speed gear driving gear 23-13 meshes with the low-speed gear driven gear 23-7; one end of the driving bevel gear shaft 23-3 meshes with a driven bevel gear 23-4, and the other end is provided with a power output flange 23-8; under the action of the shift engaging sleeve 23-10, the power transmission between the driving bevel gear shaft 23-3 and the high-speed gear driven gear 23-5 and the low-speed gear driven gear 23-7 can be realized, so as to distribute the power generated by the motor to the driven bevel gear 23-4 and the power output flange 23-8.

[0039] Sliding wear-resistant assemblies 23-14 are provided between the high-speed gear driven gear 23-5, the low-speed gear driven gear 23-7 and the driving bevel gear shaft 23-3 respectively.

[0040] The center gear shaft 23-2 and the driving bevel gear shaft 23-3 are both of hollow structure, and lubricating oil holes 23-3a are provided at the mating parts of the driving bevel gear shaft 23-3 with the high-speed gear driven gear 23-5 and the low-speed gear driven gear 23-7 respectively.

[0041] The main reducer housing includes a motor housing 21-1, a reducer housing 21-2 and a main reducer mounting surface 21-3; preferably, it is integrally cast.

[0042] The motor housing 21-1 is arranged above the reducer housing 21-2, and the main reducer mounting surface 21-3 is fixed to the axle housing 1. Preferably, the main reducer mounting surface 21-3 is positioned with the axle housing 1 through a spigot, and is connected and fixed through threaded fasteners.

[0043] The wheel side reducer 3 includes a wheel side reducer housing 31 and a wheel hub 32; a wheel side housing 31-1 and a planet carrier structure 31-2 are integrally arranged on the wheel side reducer housing 31.

[0044] The disc brake 4 includes a plurality of hydraulic brakes 41 connected to the axle housing 1 and a brake disc 42 connected to the wheel hub 32.

[0045] An auxiliary brake 5 is further included; the auxiliary brake 5 is arranged on the main reducer housing.

[0046] An auxiliary brake disc 23-9 is fixedly arranged on the outside of the power output flange 23-8, and the auxiliary brake disc 23-9 is braked by the auxiliary brake 5.

[0047] Embodiment 2

[0048] As Figure 1-6 shown: A vehicle includes an integrated electric drive axle with a power distribution function as described in any one of the above.

[0049] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0050] As described above, the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An integrated electric drive axle with power distribution function, characterized in that It includes a bridge housing (1), a main reducer (2) arranged in the middle of the bridge housing (1) and in front of the vehicle during driving, and wheel side reducers (3) and disc brakes (4) respectively arranged at both ends of the bridge housing (1); The main reducer (2) is an integrated two-speed main reducer, including a main reducer housing, and a motor and a reducer arranged in the main reducer housing; the central axis of the motor is perpendicular to the axle axis; The reducer includes a motor shaft (23-1), a central gear shaft (23-2), and a driving bevel gear shaft (23-3); A high-speed gear driving gear (23-12), a first-stage reduction gear (23-11), and a low-speed gear driving gear (23-13) are respectively arranged on the central gear shaft (23-2); the first-stage reduction gear (23-11) is fixedly arranged on the central gear shaft (23-2); a high-speed gear driven gear (23-5), a power engagement sleeve (23-6), and a low-speed gear driven gear (23-7) are respectively arranged on the driving bevel gear shaft (23-3); the power engagement sleeve (23-6) is fixed to the driving bevel gear shaft (23-3), and a shift engagement sleeve (23-10) is arranged on the outer peripheral side of the power engagement sleeve (23-6); The output end of the motor is splined to the motor shaft (23-1); the high-speed gear driving gear (23-12) is meshed with the high-speed gear driven gear (23-5), and the low-speed gear driving gear (23-13) is meshed with the low-speed gear driven gear (23-7); one end of the driving bevel gear shaft (23-3) is meshed with a driven bevel gear (23-4), and the other end is provided with a power output flange (23-8).

2. The integrated electric drive axle with power distribution function according to claim 1, characterized in that, Sliding wear-resistant components (23-14) are respectively arranged between the high-speed gear driven gear (23-5) and the low-speed gear driven gear (23-7) and the driving bevel gear shaft (23-3).

3. The integrated electric drive axle with power distribution function according to claim 1, characterized in that, Both the central gear shaft (23-2) and the driving bevel gear shaft (23-3) are of hollow structures, and lubricating oil holes (23-3a) are arranged at the mating parts of the driving bevel gear shaft (23-3) with the high-speed gear driven gear (23-5) and the low-speed gear driven gear (23-7) respectively.

4. The integrated electric drive axle with power distribution function according to claim 1, characterized in that, The main reducer housing includes a motor housing (21-1), a reducer housing (21-2), and a main reducer mounting surface (21-3); The motor housing (21-1) is arranged above the reducer housing (21-2), and the main reducer mounting surface (21-3) is fixed to the bridge housing (1).

5. The integrated electric drive axle with power distribution function according to claim 1, characterized in that, The wheel side reducer (3) includes a wheel side reducer housing (31) and a wheel hub (32); a wheel side housing (31-1) and a planet carrier structure (31-2) are integrally arranged on the wheel side reducer housing (31).

6. The integrated electric drive axle with power distribution function according to claim 5, characterized in that, The disc brake (4) includes a plurality of hydraulic brakes (41) connected to the bridge housing (1), and a brake disc (42) connected to the wheel hub (32).

7. The integrated electric drive axle with power distribution function according to claim 1, characterized in that It further includes an auxiliary brake (5); the auxiliary brake (5) is arranged on the main reducer housing; An auxiliary brake disc (23-9) is fixedly arranged on the outer side of the power output flange (23-8), and the auxiliary brake disc (23-9) is braked by an auxiliary brake (5).

8. A vehicle, characterized in that, It includes an integrated electric drive axle with power distribution function as described in any one of claims 1-7.

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