Traction motor oil seal for DF8B locomotive
By designing a multi-combination seal of bearing cover and sealing ring structure in the DF8B locomotive traction motor, the problem of grease leakage due to the inability to drain gear grease in time was solved, the stable operation of the motor was achieved, and bearing seizure and insulation damage were avoided.
Patent Information
- Application Number
- CN202423220009.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In the traction motor of the DF8B locomotive, the labyrinth oil seal prevents the timely discharge of gear grease, causing grease leakage, which affects bearing seizure and insulation damage, thereby affecting the locomotive's operating safety.
A traction motor oil seal for DF8B locomotives is designed, which adopts a bearing cover and sealing ring structure, and is equipped with a multi-combination seal consisting of annular protrusions and annular baffles. It is equipped with an oil return groove and an inclined oil return hole for storing and returning gear grease.
This effectively solves the problem of grease buildup in traction motors, avoids bearing seizure and insulation damage, and ensures the stability and reliability of locomotive operation.
Smart Images
Figure CN223666141U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to traction motor sealing technical field, concretely relates to a traction motor oil seal for DF8B locomotive. BACKGROUND
[0002] The oil seal is an important sealing element in the traction motor of the locomotive, and its main function is to prevent the lubricating oil or working medium in the motor from leaking, and to prevent the impurities such as dust and water from entering the motor, and the performance of the oil seal directly affects the running efficiency and service life of the motor.
[0003] The labyrinth oil seal is used between the bearing chamber and the gear cover of the DF8B traction motor, and due to the relatively poor flowability of the gear grease, the gear grease accumulated in the oil seal cannot be discharged in time, enters the bearing chamber, and causes the traction motor to leak, which can cause the traction motor bearing to be fixed, insulation damage and other faults, and directly affects the locomotive operation. SUMMARY
[0004] In view of the deficiencies in the prior art, the utility model aims to design a traction motor oil seal for DF8B locomotive, and solve the problem of traction motor leakage affecting locomotive operation mentioned in the background.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a traction motor oil seal for DF8B locomotive, comprising a bearing cover and a seal ring, one side of the bearing cover is connected with the bearing chamber, the other side is provided with a seal ring, the outer side of the seal ring is connected with the gear cover, the contact surface of the bearing cover and the seal ring is provided with an annular protrusion, the seal ring is provided with an annular baffle matched with the annular protrusion, an oil storage cavity is arranged between the annular protrusion and the annular baffle, an oil return groove is arranged at the inner side edge of the seal ring and the connecting position of the bearing cover, and an oil return hole is arranged on the side surface of the oil return groove.
[0006] The number of the annular protrusions is multiple, the number of the annular baffles is matched with the number of the annular protrusions, and multiple combination seals are formed.
[0007] The oil return groove is used for storing the gear grease thrown into the oil seal by centrifugal force during work.
[0008] The oil return hole is inclinedly arranged, and is connected with the oil return groove and the gear cover, and is used for returning the gear grease in the oil return groove to the gear cover by gravity.
[0009] The utility model has the advantages of simple structure, convenient processing, effectively solves the problem of traction motor leakage, avoids the faults such as traction motor bearing fixation and insulation damage, and ensures the locomotive operation. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is a top view schematic diagram of the utility model.
[0011] Figure 2 is a C-C cross-sectional view schematic diagram. Figure 1
[0012] is a A partial enlarged view schematic diagram. Figure 3 Figure 2
[0013] Figure: 1, bearing cover, 101, annular protrusion, 2, seal ring, 201, annular baffle, 3, oil return hole, 4, oil storage cavity, 5, oil return groove. DETAILED DESCRIPTION
[0014] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings of the utility model, and it should be noted that the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.
[0015] Please refer to Figures 1-3 A kind of DF8B type locomotive traction motor oil seal, including bearing cover 1 and seal ring 2, the side of the bearing cover 1 is connected with bearing chamber, its other side is equipped with seal ring 2, the outer side of the seal ring 2 is connected with gear cover, the contact surface of the bearing cover 1 and seal ring 2 is equipped with annular protrusion 101, the seal ring 2 is equipped with annular baffle 201 matched with annular protrusion 101, oil storage cavity 4 is equipped between the annular protrusion 101 and annular baffle 201, the inner side edge of the seal ring 2 and the connecting place of bearing cover 1 are equipped with oil return groove 5, the side of the oil return groove 5 is equipped with oil return hole 3.The number of the annular protrusion 101 is multiple, the number of the annular baffle 201 is matched with the number of annular protrusion 101, multiple combination seals are formed.The oil return groove 5 is used to store gear grease that is thrown into oil seal by centrifugal force when locomotive runs.The oil return hole 3 is obliquely arranged, connects oil return groove 5 with gear cover, and is used to return gear grease in oil return groove 5 to gear cover by self weight.
[0016] The utility model in using:
[0017] Gear grease is thrown into oil return groove 5 under the action of centrifugal force when locomotive runs, the oil return groove 5 side is equipped with obliquely arranged oil return hole 3, gear grease in oil return groove 5 is returned to gear cover by oil return hole 3 under the action of self weight and oil return hole 3 gradient.
[0018] The above only is the preferred embodiment of the utility model, and does not use to limit the utility model, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
[0019] The utility model discloses the part of not detailed of the present application is prior art.
Claims
1. A DF8B locomotive traction motor oil seal comprising a bearing cap (1) and a seal ring (2), characterized in that: One side of the bearing cover (1) is connected with the bearing chamber, and the other side is provided with a seal ring (2), the outer side of the seal ring (2) is connected with the gear cover, the contact surface of the bearing cover (1) and the seal ring (2) is provided with an annular protrusion (101), the seal ring (2) is provided with an annular baffle (201) matched with the annular protrusion (101), an oil storage cavity (4) is arranged between the annular protrusion (101) and the annular baffle (201), the inner side edge of the seal ring (2) is provided with an oil return groove (5) at the connection with the bearing cover (1), and the side of the oil return groove (5) is provided with an oil return hole (3).
2. The oil seal for the traction motor of the DF8B locomotive according to claim 1, characterized in that: The number of the annular protrusions (101) is multiple, and the number of the annular baffles (201) is matched with the number of the annular protrusions (101) to form multiple combined seals.
3. The oil seal for a traction motor of a DF8B locomotive according to claim 1, characterized in that: The oil return groove (5) is used for storing gear grease thrown into the oil seal by centrifugal force during work.
4. The oil seal for a traction motor of a DF8B locomotive according to claim 1, characterized in that: The oil return hole (3) is inclinedly arranged and communicates the oil return groove (5) with the gear cover, and is used for returning the gear grease in the oil return groove (5) to the gear cover by gravity.