Shaft sealing system for test bench with motor shell speed reducer assembly
A modular axis sealing system for electric drive systems ensures consistent sealing across various gearbox configurations, addressing the universality and cost issues of existing setups by adjusting key flange dimensions, thus maintaining power transmission.
Patent Information
- Application Number
- CN202422259173.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-14
AI Technical Summary
In the prior art, the reduction gear assembly with motor housing lacks the system sealing conditions when installed on the bench, resulting in damage to the universality of the tooling, increasing costs and poor sealing effect.
A shaft sealing system including connecting flanges, spline flanges, sealing tooling and locking tooling is designed. The sealing of the motor housing and tooling is achieved through sealing tooling and high-speed oil seals. The outer surface of the locking nut is equipped with an oil guide groove to lubricate the bearing.
While transmitting power in different types of reducer assembly tests, the sealing function between the motor housing and tooling is realized, which improves the versatility of the tooling, reduces assembly difficulty and saves costs.
Smart Images
Figure CN223105258U_ABST
Abstract
Description
Technical Field
[0001] The present utility model relates to the technical field of reducer testing, and particularly to a shaft sealing system for a test bench of a reducer assembly with a motor housing. Background Art
[0002] Currently, new energy electric drive assemblies usually adopt an integrated setting, and most electric drive assemblies are usually cast in one piece with the motor housing and the reducer housing during manufacturing. For the test of this type of reducer assembly, it is necessary to install it on the test bench together with the motor housing. When the reducer assembly operates, there will be lubricating oil in the motor housing. The previous general tooling did not have systematic sealing conditions, and it was necessary to temporarily cut grooves on the tooling and install sealing rings according to the size of the on-site reducer assembly. The following drawbacks exist in the above temporary sealing method: (1) It destroys the universality of the original tooling; (2) Different reducer assemblies require customized sealing tooling, increasing costs; (3) The sealing conditions are not standardized and the sealing effect is not good. Therefore, there is a need for a shaft sealing system that is applicable to the tests of different types of reducer assemblies with motor housings and can achieve the sealing function between the motor housing and the tooling under the condition of ensuring power transmission. Summary of the Utility Model
[0003] The purpose of the present utility model is to overcome the deficiencies in the above-mentioned prior art, and aims to provide a shaft sealing system that is applicable to the tests of different types of reducer assemblies with motor housings and can achieve the sealing function between the motor housing and the tooling under the condition of ensuring power transmission.
[0004] To achieve the above object, the technical solution of the present utility model is realized as follows:
[0005] A shaft sealing system for a test bench of a reducer assembly with a motor housing includes a connecting flange, a spline flange, a sealing tooling, and a locking tooling. The connecting flange and the spline flange are fixedly connected to each other, and the spline flange is key-connected to one end of the transmission shaft of the reducer; the locking tooling is fixedly connected to the transmission shaft, and a high-speed bearing is arranged on the locking tooling. A locking nut for fixing the high-speed bearing to the locking tooling is threadedly connected to the transmission shaft; the sealing tooling abuts against the spline flange and is connected to the transmission shaft. The sealing tooling is of an annular structure, an annular groove facing the locking tooling is opened in the inner circle of the sealing tooling, a high-speed oil seal is arranged in the annular groove, and a sealing ring is arranged on the outer circle of the sealing tooling.
[0006] Further, an inwardly concave oil guiding groove is opened on the outer surface of the locking nut.
[0007] Further, the locking tooling is composed of a flange plate.
[0008] Compared with the prior art, the present utility model has the following beneficial effects:
[0009] The utility model can meet the test requirements of various types of motor housing reducer assemblies, and realizes the shaft sealing function between the transmission shaft and the connecting ring while transmitting power. In the tests of different types of motor housing reducer assemblies, in cooperation with the universal connecting ring, only by changing the spline flange size at the end of the tooling that mates with the reducer, the universality of adapting to different types of reducer assembly tests is achieved, saving tooling costs and reducing assembly difficulty. Brief Description of the Drawings
[0010] Figure 1 is a schematic structural diagram of the utility model;
[0011] Figure 2 is a schematic structural diagram of the locking nut in the utility model.
[0012] Description of the Reference Numerals in the Drawings:
[0013] 1 - transmission shaft, 2 - connecting flange, 3 - spline flange, 4 - sealing tooling, 5 - sealing ring, 6 - high-speed oil seal, 7 - locking nut, 8 - high-speed bearing, 9 - locking tooling, 10 - oil guide groove, 11 - connecting ring. Detailed Embodiment
[0014] The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments.
[0015] As Figure 1 and Figure 2 shown, a shaft sealing system for a test bench of a motor housing reducer assembly includes a connecting flange 2, a spline flange 3, a sealing tooling 4 and a locking tooling 9. The connecting flange 2 and the spline flange 3 are fixedly connected to each other, and the spline flange 3 is key-connected to one end of the transmission shaft 1 of the reducer; the locking tooling 9 is fixedly connected to the transmission shaft 1, and a high-speed bearing 8 is arranged on the locking tooling 9. A locking nut 7 for fixing the high-speed bearing 8 to the locking tooling 9 is threadedly connected to the transmission shaft 1; the sealing tooling 4 abuts against the spline flange 3 and is connected to the transmission shaft 1. The sealing tooling 4 is of an annular structure, and an annular groove facing the locking tooling 9 is provided in the inner circle of the sealing tooling 4. A high-speed oil seal 6 is arranged in the annular groove, and a sealing ring 5 is arranged on the outer circle of the sealing tooling 4.
[0016] As Figure 2 shown, an inwardly concave oil guide groove 10 is provided on the outer surface of the locking nut 7, which facilitates the lubrication of the bearing oil while locking the high-speed bearing 8.
[0017] Among them, the locking tooling 9 is composed of a flange disc. The locking tooling 9 can not only fix the transmission shaft 1, but also be fixed to the connecting ring 11 of the reducer through the screw holes.
[0018] The utility model can meet the test requirements of various types of motor housing reducer assemblies, and realizes the shaft sealing function of the transmission shaft 1 and the connecting ring 11 while transmitting power. The connecting ring 11 of the reducer is arranged between the sealing tooling 4 and the locking tooling 9, and the oil seal at the transmission shaft 1 is realized through the sealing ring 5 and the high-speed oil seal 6 on the sealing tooling 4. In the tests of different types of motor housing reducer assemblies, in cooperation with the universal connecting ring 11, only by changing the size of the spline flange 3 at the end of the tooling that cooperates with the reducer, the universality of adapting to different types of reducer assembly tests is achieved, the tooling cost is saved, and the assembly difficulty is reduced.
[0019] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A shaft seal system for a test bench of a reducer assembly with a motor housing, characterized in that: It includes a connecting flange (2), a spline flange (3), a sealing tooling (4) and a locking tooling (9). The connecting flange (2) and the spline flange (3) are fixedly connected to each other, and one end of the spline flange (3) is key-connected to the transmission shaft (1) of the reducer; the locking tooling (9) is fixedly connected to the transmission shaft (1), a high-speed bearing (8) is arranged on the locking tooling (9), and a locking nut (7) for fixing the high-speed bearing (8) to the locking tooling (9) is threadedly connected to the transmission shaft (1); the sealing tooling (4) abuts against the spline flange (3) and is connected to the transmission shaft (1), the sealing tooling (4) is of an annular structure, an annular groove facing the locking tooling (9) is formed in the inner ring of the sealing tooling (4), a high-speed oil seal (6) is arranged in the annular groove, and a sealing ring (5) is arranged on the outer ring of the sealing tooling (4).
2. The shaft seal system for a test bench of a reducer assembly with a motor housing according to claim 1, characterized in that: A concave oil guiding groove (10) is formed on the outer surface of the locking nut (7).
3. The shaft seal system for the test bench of the reducer assembly with a motor housing according to claim 1, characterized in that: The locking tooling (9) is composed of a flange plate.