Parallel shaft type electrically-driven rear axle static torsion test tool

Abstract

The utility model relates to the field of new energy mechanical equipment, and particularly discloses a parallel shaft type electrically-driven rear axle static torsion test tool, which comprises a front support, a connecting flange, a first transmission shaft, a rear support, a second transmission shaft and an input connecting disc, and is characterized in that a drive axle output shaft is fixed on a foundation through the front support and the rear support; an input shaft of the electric drive axle is connected with the connecting flange through a spline, the connecting flange is connected with the second transmission shaft through a flange, and the first transmission shaft is connected with the input receiving disc through a flange. By means of the tool structure, the output shaft of the drive axle is parallel to the input shaft of the electric drive axle, and the input connecting disc can be conveniently connected with equipment. Torque output by equipment is transmitted to the input shaft of the electric drive axle through the transmission shaft and finally transmitted to the output shaft, and meanwhile in order to ensure that the electric drive axle is fixed in the test process, the front support and the rear support firmly fix the electric drive axle through bolt connection.

Description

Technical Field

[0001] The utility model relates to the field of new energy mechanical equipment, and specifically discloses a parallel-axis electric drive rear axle static torsion test tooling. Background Art

[0002] After the electric drive axle design is completed and the sample is produced, before the formal mass production, the various performances of the electric drive axle sample need to be evaluated, including the static torsion strength performance. The input shaft and output shaft of the transmission fuel rear axle are mutually perpendicular T-shaped, and its static torsion strength tooling is relatively mature. Because the input and output shafts of the electric drive rear axle are mostly parallel, the static torsion test of the electric drive axle cannot be completed directly using the test bench of the transmission fuel rear axle. The tooling must be redesigned and made to fix and connect the electric drive axle. Static torsion test can be carried out.

[0003] With the development of the automobile industry, the development of electric vehicles has become a trend. Most electric vehicles are rear-wheel drive, and due to layout and structural requirements, the input shaft and output shaft of the electric drive axle are generally parallel to each other, which is completely different from traditional fuel vehicles. As a result, various test equipment and tooling for electric drive axles also need to be developed synchronously, including static torque test equipment and tooling for electric drive axles. Utility Model Content

[0004] The purpose of the utility model is to solve the defects of the prior art and provide a parallel-axis electric drive rear axle static torsion test tool.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A parallel-axis electric drive rear axle static torsion test fixture comprises a front support, a connecting flange, a first transmission shaft, a rear support, a second transmission shaft and an input receiving plate, wherein the output shaft of the drive axle is fixed on a foundation through the front support and the rear support;

[0007] The input shaft of the electric drive axle is connected to the connecting flange through a spline, the connecting flange is connected to the second transmission shaft through a flange, and the first transmission shaft is connected to the input connecting plate through a flange.

[0008] Furthermore, waist-shaped holes are provided on the bottom plates of the front support and the rear support.

[0009] Furthermore, the output shaft of the drive axle and the input shaft of the electric drive axle are parallel to each other.

[0010] Furthermore, a circular hole is provided on the fixing plate of the rear support, and the circular hole is used for arranging the second transmission shaft.

[0011] Furthermore, the connecting flange is an internal spline, and the input shaft of the electric drive axle is an external spline.

[0012] The beneficial effect of the utility model is that the output shaft of the drive axle and the input shaft of the electric drive axle are parallel to each other through the tooling structure, which facilitates the connection between the input receiving plate and the equipment. The torque output by the equipment is transmitted to the input shaft of the electric drive axle through the transmission shaft, and finally the output shaft is transmitted. At the same time, in order to ensure that the electric drive axle is fixed during the test, the front and rear supports are firmly fixed by bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0014] Figure 2 It is a schematic side view of the structure of an embodiment of the utility model;

[0015] Figure 3 It is a schematic diagram of the rear support structure of an embodiment of the utility model. DETAILED DESCRIPTION

[0016] Reference Figures 1 to 3 , a parallel-axis electric drive rear axle static torsion test fixture, comprising a front support 1, a connecting flange 2, a first transmission shaft 3, a rear support 4, a second transmission shaft 5 and an input receiving plate 6, wherein the output shaft of the drive axle is fixed on a foundation through the front support 1 and the rear support 4;

[0017] The input shaft of the electric drive axle is connected to the connecting flange 2 through a spline, the connecting flange 2 is connected to the second transmission shaft 5 through a flange, and the first transmission shaft 3 is connected to the input connection plate 6 through a flange.

[0018] When the test fixture is used, the electric drive rear axle is first connected to the front support 1 and the rear support 4 to form a whole, and then the whole is fixed to the foundation of the test equipment by bolts. Waist-shaped holes are opened on the front and rear support bottom plates to facilitate the installation of the front and rear supports and the foundation, and the rear axle is in a stable state.

[0019] It is then connected to the input shaft of the rear axle via the connecting flange 2. The connecting flange 2 is an internal spline, and the input shaft of the electric drive axle is an external spline. During the test, the two transmit torque via the internal and external splines.

[0020] Due to space arrangement requirements, a transmission shaft 3 and a transmission shaft 5 are added between the connecting flange 2 and the input connection plate 6 so that the input connection plate 6 can be connected to the test equipment.

[0021] The above parts are firmly connected by bolts to ensure that the test fixture does not loosen, and each connecting flange is designed with a stop to ensure installation accuracy.

[0022] In addition, a circular hole is opened on the fixing plate of the rear support 4 so that the transmission shaft 5 can be arranged without interfering with the rear support 4; when designing the center height of the distribution circle of the mounting bolt holes of the front support 1 and the rear support 4, it is necessary to ensure that there is a gap between the electric drive rear axle and the base plane.

[0023] Through this fixture structure, the output shaft of the drive axle and the input shaft of the electric drive axle are parallel to each other, which is convenient for the input plate to be connected to the equipment. The torque output by the equipment is transmitted to the input shaft of the electric drive axle through the transmission shaft, and finally to the output shaft. At the same time, to ensure that the electric drive axle is fixed during the test, the front and rear supports are firmly fixed by bolts.

[0024] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A parallel-axis electric drive rear axle static torsion test fixture, characterized in that: It comprises a front support (1), a connecting flange (2), a first transmission shaft (3), a rear support (4), a second transmission shaft (5) and an input receiving plate (6), wherein the output shaft of the drive axle is fixed on a foundation via the front support (1) and the rear support (4); The input shaft of the electric drive axle is connected to the connecting flange (2) via a spline, the connecting flange (2) is connected to the second transmission shaft (5) via a flange, and the first transmission shaft (3) is connected to the input connection plate (6) via a flange.

2. The parallel-axis electric drive rear axle static torsion test fixture according to claim 1, characterized in that: Waist-shaped holes are provided on the bottom plates of the front support (1) and the rear support (4).

3. A parallel-axis electric drive rear axle static torsion test fixture according to claim 1 or 2, characterized in that: The output shaft of the drive axle and the input shaft of the electric drive axle are parallel to each other.

4. The parallel-axis electric drive rear axle static torsion test fixture according to claim 3, characterized in that: A circular hole is provided on the fixing plate of the rear support (4), and the circular hole is used for arranging the second transmission shaft (5).

5. The parallel-axis electric drive rear axle static torsion test fixture according to claim 3, characterized in that: The connecting flange (2) is an internal spline, and the input shaft of the electric drive axle is an external spline.

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