Motor false shell and false shaft for calibrating two-in-one electric drive assembly

Abstract

The invention relates to a motor false shell and false shaft for two-in-one electric drive assembly calibration, which comprises a rotor assembly and a stator assembly, and comprises a motor false shell and a motor false shaft, the motor false shell comprises a motor shell, a casing water jacket and a rear end cover assembly, the casing water jacket is arranged in the motor shell and is in interference fit with the motor shell, and the rear end cover assembly is arranged in the casing water jacket. The motor false shaft is a motor internal spline rotating shaft, the rotor assembly, the stator assembly and the motor false shaft are respectively arranged in the motor false shell, the stator assembly is in interference fit with the casing water jacket, the rotor assembly is connected with the motor false shaft in an interference fit mode, and the rear end cover assembly is fixed on the motor casing. An original two-in-one shell is replaced with the fake shell, a motor gear shaft is replaced with the fake shaft, and a single-motor assembly is assembled and can be conveniently installed on a motor test bench for a calibration test. The problem that an existing structure is inconvenient to install is solved.

Description

Technical Field

[0001] The invention relates to a motor dummy housing and a dummy shaft for calibrating a two-in-one electric drive assembly. Background Art

[0002] The existing structure is that the motor housing and the reduction box housing are two-in-one, and the motor shaft is a gear shaft integrated with the reduction box input shaft. The existing structure is not convenient for installation on the motor test bench for calibration test. Summary of the invention

[0003] The technical problem to be solved by the present invention is: a motor dummy housing and a dummy shaft for calibrating a two-in-one electric drive assembly, which are convenient for installation on a motor test bench for calibration testing.

[0004] The technical solution to solve the above technical problems is: a motor dummy shell and dummy shaft for calibrating a two-in-one electric drive assembly, including a rotor assembly and a stator assembly, including a motor dummy shell and a motor dummy shaft, the motor dummy shell including a motor housing, a housing water jacket and a rear end cover assembly, the housing water jacket is arranged in the motor housing and has an interference fit with the motor housing, the motor dummy shaft is a spline shaft inside the motor, the rotor assembly, the stator assembly and the motor dummy shaft are respectively arranged in the motor dummy shell, the stator assembly has an interference fit with the housing water jacket, the rotor assembly and the motor dummy shaft are connected by an interference fit, and the rear end cover assembly is fixed to the motor housing.

[0005] A further technical solution of the present invention is that: the motor fake housing is provided with mounting plates for the electronic oil pump, the oil cooler and the oil pipe assembly, respectively. The motor fake housing is provided with a high-voltage junction box assembly.

[0006] The motor housing is provided with an oil pump groove of the electronic oil pump, and the electronic oil pump is installed in the oil pump groove of the motor housing. The oil pipe end of the oil pipe assembly and the oil outlet of the oil cooler are respectively connected and fixed to the motor housing through a clamp.

[0007] The motor inner spline shaft is respectively arranged on the motor housing through a large bearing and a small bearing. A bearing chamber is provided on the motor housing. The front end of the motor inner spline shaft has an interference fit with the inner ring of the large bearing, and the outer ring of the large bearing has a clearance fit with the bearing chamber on the motor housing; the rear end of the motor inner spline shaft has an interference fit with the inner ring of the small bearing, and the outer ring of the small bearing has a clearance fit with the bearing chamber on the rear end cover assembly, so that the rotor assembly can drive the shaft to rotate.

[0008] Due to the adoption of the above technical solution, the motor dummy housing and dummy shaft used for calibration of a two-in-one electric drive assembly of the present invention have the following beneficial effects: The present invention replaces the original two-in-one housing with a dummy housing, and replaces the motor gear shaft with a dummy shaft, and assembles a single motor assembly to facilitate installation on a motor test bench for calibration testing, thereby solving the problem of inconvenient installation of the existing structure.

[0009] Next, the technical features of a motor dummy housing and a dummy shaft for calibrating a two-in-one electric drive assembly according to the present invention will be further described in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 : A structural schematic diagram of a motor dummy housing and dummy shaft used for calibration of a two-in-one electric drive assembly.

[0011] Figure 2 : A structural schematic diagram of a motor dummy housing and dummy shaft used for calibration of a two-in-one electric drive assembly.

[0012] Figure 3 : Schematic diagram of the structure of the motor false shell.

[0013] Figure 4 : Schematic diagram of the structure of the motor false shell.

[0014] Figure 5 : Schematic diagram of the structure of the motor false shell.

[0015] Figure 6 : Schematic diagram of the structure of the motor false shell.

[0016] Figure 7 : Schematic diagram of the structure of the motor pseudo shaft.

[0017] Figure 8 : Schematic diagram of the structure of the motor pseudo shaft.

[0018] In the above drawings, the descriptions of the reference numerals are as follows: 1-motor dummy housing, 2-motor dummy shaft, 3-housing water jacket, 4-rear end cover assembly, 5-rotor assembly, 6-stator assembly, 7-high voltage junction box assembly, 8-electronic oil pump, 9-oil cooler, 10-oil pipe assembly. DETAILED DESCRIPTION

[0019] A motor dummy housing and dummy shaft for calibration of a two-in-one electric drive assembly, including a rotor assembly and a stator assembly, including a motor dummy housing and a motor dummy shaft, the motor dummy housing including a motor housing, a housing water jacket and a rear end cover assembly, the housing water jacket is arranged in the motor housing and has an interference fit with the motor housing, the motor dummy shaft is a motor internal spline shaft, that is, the motor dummy shaft is a motor internal spline shaft, the rotor assembly, the stator assembly and the motor dummy shaft are respectively arranged in the motor dummy housing, the rotor assembly and the motor dummy shaft are connected by an interference fit, and the rear end cover assembly is fixed on the motor housing. The rear end cover assembly, the motor housing and the housing water jacket are fixed by bolts. The stator assembly has an interference fit with the housing water jacket, and is axially limited by a stopper in the housing water jacket. The motor internal spline shaft is provided with an internal spline and a shaft shoulder, the rotor assembly and the motor internal spline shaft are interference fit, and are axially limited by a shaft shoulder on the motor internal spline shaft.

[0020] The motor fake housing is provided with mounting plates for the electronic oil pump, oil cooler and oil pipe assembly. The motor fake housing is provided with a high-voltage junction box assembly. The motor housing is provided with an oil pump groove for the electronic oil pump, which is installed in the oil pump groove of the motor housing and fixed by three bolts. The motor housing is provided with an oil cooler mating surface, which is installed on the oil cooler mating surface of the motor housing and fixed by five bolts. The oil pipe end of the oil pipe assembly is fixed to the oil outlet of the oil cooler on the motor housing by a clamp connection, and the other end of the oil pipe assembly (with an oil pipe threaded joint) is connected and matched with the threaded hole of the rotary transformer cover plate of the rear end cover assembly. The motor inner spline shaft is respectively arranged on the motor housing through a large bearing and a small bearing. A bearing chamber is provided on the motor housing. The front end of the motor inner spline shaft has an interference fit with the inner ring of the large bearing, and the outer ring of the large bearing has a clearance fit with the bearing chamber on the motor housing; the rear end of the motor inner spline shaft has an interference fit with the inner ring of the small bearing, and the outer ring of the small bearing has a clearance fit with the bearing chamber on the rear end cover assembly, so that the rotor assembly can drive the shaft to rotate.

[0021] A motor dummy housing and dummy shaft for calibration of a two-in-one electric drive assembly. The dummy housing replaces the original two-in-one housing, and the dummy shaft replaces the motor gear shaft, and a single motor assembly is assembled to facilitate installation on a motor test bench for calibration testing. The original rear end cover structure and the installation and matching structure of components such as the oil cooler and oil pump remain unchanged.

Claims

1. A motor dummy housing and dummy shaft for calibrating a two-in-one electric drive assembly, including a rotor assembly and a stator assembly, characterized in that: It includes a motor dummy shell and a motor dummy shaft. The motor dummy shell includes a motor casing, a casing water jacket and a rear end cover assembly. The casing water jacket is arranged in the motor casing and has an interference fit with the motor casing. The motor dummy shaft is a spline shaft inside the motor. The rotor assembly, the stator assembly and the motor dummy shaft are respectively arranged in the motor dummy shell. The stator assembly has an interference fit with the casing water jacket. The rotor assembly is connected to the motor dummy shaft by an interference fit. The rear end cover assembly is fixed to the motor casing.

2. The motor dummy housing and dummy shaft for calibrating a two-in-one electric drive assembly according to claim 1, characterized in that: The motor false housing is respectively provided with mounting plate surfaces for an electronic oil pump, an oil cooler and an oil pipe assembly.

3. The motor dummy housing and dummy shaft for calibrating a two-in-one electric drive assembly according to claim 1, characterized in that: A high voltage junction box assembly is arranged on the motor false housing.

4. The motor dummy housing and dummy shaft for calibrating a two-in-one electric drive assembly according to claim 2, characterized in that: An oil pump groove of the electronic oil pump is arranged on the motor housing, and the electronic oil pump is installed in the oil pump groove of the motor housing.

5. The motor dummy housing and dummy shaft for calibrating a two-in-one electric drive assembly according to claim 2, characterized in that: The oil pipe end of the oil pipe assembly and the oil outlet of the oil cooler are respectively connected and fixed on the motor housing through clamps.

6. The motor dummy housing and dummy shaft for calibrating a two-in-one electric drive assembly according to claim 1, characterized in that: The motor inner spline shaft is respectively arranged on the motor housing through a large bearing and a small bearing. A bearing chamber is provided on the motor housing. The front end of the motor inner spline shaft has an interference fit with the inner ring of the large bearing, and the outer ring of the large bearing has a clearance fit with the bearing chamber on the motor housing; the rear end of the motor inner spline shaft has an interference fit with the inner ring of the small bearing, and the outer ring of the small bearing has a clearance fit with the bearing chamber on the rear end cover assembly, so that the rotor assembly can drive the shaft to rotate.

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