Power assembly fixing support structure

Abstract

A power assembly fixing support structure comprises two long supports symmetrically installed on an axle housing, one end of each long support is provided with a side welding support used for being fixedly connected with a rear end cover of a motor, and the middle of each long support is provided with a middle welding support used for being fixedly connected with a front end cover of the motor. The other end of the long support is used for being fixedly connected with a differential support. The weight of the driving system is reduced; the size of the driving system is reduced; the reliability of a power system is improved; and the dimensional chain tolerance of the motor assembly is controlled.

Description

TECHNICAL FIELD

[0001] The utility model belongs to power assembly technical field, concretely relates to a power assembly fixed bolster structure. BACKGROUND

[0002] Power assembly is one of important assemblies in electric drive axle, it is composed of motor assembly, speed reducer assembly, differential assembly three big parts, the present common power assembly's fixed mode is that motor, speed reducer, differential are fixed respectively, namely motor assembly, speed reducer assembly and differential assembly are all fixed with axle housing with the mode of directly or increasing bolster.

[0003] The prior art has the problems of not being able to absorb the vibration of motor when fixing power assembly, involving more parts and heavy system weight when fixing power assembly by increasing adapter bolster, high system cost, and poor reliability. SUMMARY

[0004] To overcome the deficiencies of the prior art, the utility model provides a power assembly fixed bolster structure, which reduces the weight of the drive system, reduces the volume of the drive system, improves the reliability of the power system, and controls the size chain tolerance of the motor assembly.

[0005] The utility model adopts the technical scheme of:

[0006] A power assembly fixed bolster structure, comprising two symmetrical long brackets installed on the axle housing, one end of the long bracket is provided with a side welding bracket for fixedly connecting the rear end cover of the motor, the middle of the long bracket is provided with a middle welding bracket for fixedly connecting the front end cover of the motor, and the other end of the long bracket is used for fixedly connecting the differential bracket.

[0007] Further, a plurality of axle housing mounting holes for fixedly connecting the axle housing are formed in the long bracket.

[0008] Further, the side welding bracket and the middle welding bracket are both welded on the long bracket.

[0009] Further, welding reinforcing ribs are arranged between the side welding bracket, the middle welding bracket and the long bracket to increase the strength of the brackets and disperse part of the stress.

[0010] Further, the welding reinforcing ribs are in the form of a one-piece plate or an L-shaped plate.

[0011] Further, a motor rear end cover mounting hole is arranged on the side welding bracket.

[0012] Further, a motor front end cover mounting hole is arranged on the middle welding bracket.

[0013] Further, a pin hole for positioning the motor front end cover is arranged on the middle welding bracket.

[0014] Further, the long support and the differential support fixed connection end are provided with a differential support mounting hole.

[0015] The utility model discloses the beneficial effects: reduce the drive system weight;Reduce the drive system volume;The power system reliability has been improved;Control motor assembly size chain public tolerance. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the use structure schematic diagram of the utility model.

[0017] Fig. 2 It is the structure schematic diagram of the utility model.

[0018] Fig. 3 It is the structure schematic diagram of the intermediate welding support of the utility model.

[0019] In the drawing: 1, axle housing;2, long support;21, axle housing mounting hole;22, differential support mounting hole;3, motor;4, side welding support;41, motor rear end cover mounting hole;5, intermediate welding support;51, motor front end cover mounting hole;52, pin hole;6, differential;7, intermediate reinforcing rib;8, side reinforcing rib. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with specific embodiment, but will not limit the utility model to these specific embodiments.The person skilled in the art should realize that the utility model covers all alternatives, improvements and equivalent schemes possibly included in the scope of claims.

[0021] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features.In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more, unless otherwise explicitly limited.

[0022] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connect;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside communication.For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0023] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features directly contact, also can include the first and second features are not directly contact but contact through another feature between them.Moreover, the first feature is "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0024] Referring to Figs. 1-3 The embodiment provides a power assembly fixing support structure, which comprises two symmetrical long supports 2 installed on an axle housing 1, one end of the long support 2 is provided with a side welding support 4 used for fixedly connecting a rear end cover of a motor 3, the middle of the long support 2 is provided with a middle welding support 5 used for fixedly connecting a front end cover of the motor 3, and the other end of the long support 2 is used for fixedly connecting with a support of a differential 6.

[0025] The long support 2 is provided with a plurality of axle housing mounting holes 21 used for fixedly connecting with the axle housing 1.The long support 2 is fixedly screwed with nuts after being screwed through the axle housing mounting holes 21 and the matching mounting holes in the axle housing 1.

[0026] The side welding support 4 and the middle welding support 5 are welded on the long support 2.The size tolerance of the side welding support 4 and the middle welding support 5 can be controlled, so that the assembly size tolerance during motor installation can be effectively controlled, and the structure is more compact.

[0027] The welding reinforcing ribs are arranged between the side welding support 4, the middle welding support 5 and the long support 2, and are used for increasing the strength of the support and dispersing part of stress. The welding reinforcing rib is a linear plate structure or an L-shaped plate structure. Specifically, the middle part of one long support 2 is protrudingly arranged, and the middle reinforcing rib 7 in the L-shaped plate structure is arranged at the middle welding support 5; the middle part of the other long support 2 is not protrudingly arranged, and the middle reinforcing rib 7 in the linear plate structure is arranged at the middle welding support 5. The side welding support 4 is reinforced by the side reinforcing rib 8 in the linear plate structure.

[0028] The motor rear end cover mounting hole 41 is arranged on the side welding support 4, so that the motor rear end cover is fixedly connected with the side welding support 4 at the motor rear end cover mounting hole 41. The motor front end cover mounting hole 51 is arranged on the middle welding support 5, so that the motor front end cover is fixedly connected with the middle welding support 5 at the motor front end cover mounting hole 51. The pin hole 52 for positioning the motor front end cover is arranged on the middle welding support 5. The positioning pin is arranged between the hole positions of the middle welding support 5, so as to ensure that the mounting surfaces of the power assembly on both sides are on the same plane.

[0029] The differential support mounting hole 22 is arranged on the fixed connection end of the long support 2 and the differential support, so that the differential support is fixedly connected with the long support 2 at the differential support mounting hole 22, and the assembly size tolerance of the differential and the motor during installation can be controlled.

[0030] After the power assembly is assembled, the power assembly is installed on the axle housing 1, so that the integral type power assembly is installed, and the installation position can be adjusted by changing the hole size tolerance, that is, four-point support, and the position of the power assembly can be adjusted. Secondly, the middle welding support 5 and the side welding support 4 can be replaced, so that the mounting hole of the power assembly can be changed without changing the hole of the axle housing, and the universality of the axle housing can be realized. The differential, the motor and the reducer are integrated and installed, that is, an integrated fixed support structure, which simplifies the structure and reduces the cost.

[0031] The utility model discloses reduce the drive system weight;Reduce the drive system size;Improve the power system reliability;Control motor assembly size chain tolerance.

Claims

1. A powertrain fixed bracket structure, characterized by: The long bracket is symmetrically arranged on the axle housing, and one end of the long bracket is provided with a side welding bracket for fixing and connecting the rear end cover of the motor, the middle of the long bracket is provided with a middle welding bracket for fixing and connecting the front end cover of the motor, and the other end of the long bracket is used for fixing and connecting with the differential bracket.

2. The powertrain fixed mount structure of claim 1, wherein: A plurality of axle housing mounting holes are formed on the long bracket and used for fixing and connecting with the axle housing.

3. The powertrain fixed mount structure of claim 1, wherein: The side welding bracket and the middle welding bracket are welded on the long bracket.

4. The powertrain fixed mount structure of claim 3, wherein: Welding reinforcing ribs are arranged between the side welding bracket, the middle welding bracket and the long bracket.

5. A powertrain fixed mount structure according to claim 4, wherein: The welding reinforcing ribs are in the shape of a one-word plate or an L-shaped plate.

6. The powertrain fixed mount structure of claim 1, wherein: The side welding bracket is provided with a motor rear end cover mounting hole.

7. The powertrain fixed mount structure of claim 1, wherein: The middle welding bracket is provided with a motor front end cover mounting hole.

8. A powertrain fixed mount structure according to claim 7, characterized by: The middle welding bracket is provided with a pin hole for positioning the motor front end cover.

9. The powertrain fixed mount structure of claim 1, wherein: The long bracket is provided with a differential bracket mounting hole at the fixing and connecting end of the differential bracket.

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