Motor with silt-proof effect

Abstract

The utility model discloses a motor with an anti-sediment effect, which relates to the technical field of motors and comprises a rotating shaft, and a water throwing ring, a baffle plate and an end cover which are sequentially sleeved outside the rotating shaft from front to back, the end cover is movably connected with the rotating shaft, and a drainage groove is formed in the front end of the end cover; the water throwing ring is fixedly connected with the rotating shaft, and the water throwing ring is provided with a first water retaining part extending into the drainage groove; the baffle is fixedly connected with the end cover, the baffle is provided with a second water retaining part extending to the outside of the drainage groove, and a drainage gap communicated with the drainage groove is formed between the baffle and the water throwing ring. Gaps exist between the water throwing ring and the end cover and between the water throwing ring and the baffle, so that mutual contact abrasion is avoided, a non-contact sealing effect can be achieved, impurities such as accumulated water or silt on a road surface can be effectively prevented from entering the motor through mutual matching of the water throwing ring, the end cover and the baffle, the sealing performance of the motor is fully improved, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor with anti-sand effect. Background Art

[0002] The motors of existing buses are usually mounted on the chassis frame and directly connected to the drive shaft for driving. When there is water and mud on the road surface, the splashing water and mud can easily pour into the skeleton seal ring of the motor and impact the skeleton seal ring, causing the skeleton seal ring and the oil seal lip to wear and fail, losing the original protective ability, thereby causing poor motor insulation, bearing burning and other phenomena.

[0003] In order to solve this problem, a Chinese patent with announcement number CN217984730U discloses a new waterproof motor, which has a water-spinning ring on the motor's shaft. The water-spinning ring can rotate with the shaft, thereby throwing water out of the shaft to prevent water from flowing axially into the motor and causing damage to the motor.

[0004] However, this solution is to fix one end of the water-slinging ring on the rotating shaft, and the other end is in contact with the front cover of the motor. Therefore, the water-slinging ring and the front cover of the motor are contact seals. Long-term operation will cause mutual wear between the water-slinging ring and the front cover of the motor, posing a risk of failure. At the same time, it will also increase motor losses and reduce motor efficiency. Summary of the invention

[0005] The utility model provides a motor with anti-sand effect to solve the problems raised in the above background technology.

[0006] The utility model adopts the following technical solutions:

[0007] A motor with anti-mud and sand effect comprises a rotating shaft and a water-slinging ring, a baffle plate and an end cover which are sequentially sleeved on the outside of the rotating shaft from front to back; the end cover is movably connected to the rotating shaft, and a drainage groove is provided at the front end of the end cover; the water-slinging ring is fixedly connected to the rotating shaft, and the water-slinging ring is provided with a first water retaining portion extending into the drainage groove; the baffle plate is fixedly connected to the end cover, and the baffle plate is provided with a second water retaining portion extending to the outside of the drainage groove, and a drainage gap connected to the drainage groove is provided between the baffle plate and the water-slinging ring.

[0008] Furthermore, the first water retaining portion includes a first drainage inclined platform and a blocking portion which are connected to each other, the first drainage inclined platform obliquely extends to the notch of the drainage ditch, and the blocking portion horizontally extends into the drainage ditch.

[0009] Furthermore, the second water retaining portion is provided with a second drainage slope parallel to the first drainage slope.

[0010] Further, the notch of the drainage groove is in a horn-shaped structure that gradually expands from the inside to the outside.

[0011] Further, it further includes a flange. The flange is fixedly arranged at the end of the rotating shaft, and the water throwing ring is fixedly connected to the flange.

[0012] Further, the flange is provided with an annular recess, and the water throwing ring is provided with a flange that is adapted to the annular recess.

[0013] Further, an interference fit is provided between the water throwing ring and the flange.

[0014] Further, a labyrinth groove is provided between the end cover and the rotating shaft.

[0015] Further, a skeleton oil seal and a waterproof bearing are provided between the end cover and the rotating shaft, and the labyrinth groove and the skeleton oil seal are sequentially located at the front end of the waterproof bearing.

[0016] Compared with the prior art, the beneficial effects produced by the present utility model are as follows:

[0017] 1. There are gaps between the water throwing ring and the end cover and the baffle in the present utility model, so they will not contact and wear each other, and a non-contact sealing effect can be achieved. The three cooperate with each other to effectively block water, sediment and other sundries on the road surface from entering the motor interior, thereby fully improving the sealing performance of the motor and extending the service life of the motor.

[0018] 2. The present utility model adopts the double sealing effect of the water throwing ring plus the labyrinth groove, which can effectively block water, sediment and other sundries on the road surface from entering the oil seal cavity of the skeleton oil seal, so as to play a better protective role for the skeleton oil seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic cross-sectional view of the present utility model.

[0020] Figure 2 is a partial schematic cross-sectional view of the present utility model.

[0021] In the figure: 1 - rotating shaft; 2 - water throwing ring; 21 - first water blocking part; 211 - first drainage inclined platform; 212 - blocking part; 22 - flange; 3 - baffle; 31 - second water blocking part; 311 - second drainage inclined platform; 32 - drainage gap; 4 - end cover; 41 - drainage groove; 42 - labyrinth groove; 43 - skeleton oil seal; 44 - waterproof bearing; 5 - flange. DETAILED DESCRIPTION OF THE INVENTION

[0022] The following describes the specific embodiments of the present utility model with reference to the accompanying drawings. In order to fully understand the present utility model, many details are described below. However, for those skilled in the art, the present utility model can be implemented without these details.

[0023] Refer to Figure 1 and Figure 2 A motor with an anti-sediment effect, comprising a rotating shaft 1, a water throwing ring 2, a baffle 3 and an end cover 4 which are sleeved outside the rotating shaft 1 in sequence from front to back; the end cover 4 is movably connected to the rotating shaft 1, and a drainage groove 41 is provided at the front end of the end cover 4; the water throwing ring 2 is fixedly connected to the rotating shaft 1, and the water throwing ring 2 is provided with a first water blocking part 21 extending into the drainage groove 41; the baffle 3 is fixedly connected to the end cover 4, the baffle 3 is provided with a second water blocking part 31 extending outside the drainage groove 41, and a drainage gap 32 communicating with the drainage groove 41 is formed between the baffle 3 and the water throwing ring 2. When the vehicle is running, sundries such as accumulated water and sediment on the road surface are easily splashed onto the water throwing ring 2. Since the water throwing ring 2 will rotate at a high speed with the rotating shaft 1, a preliminary blocking effect is achieved to prevent sundries from entering the drainage groove 41; the baffle 3 can play a secondary blocking role to prevent sundries from entering the drainage gap 32 from the drainage groove 41; a small amount of sundries entering the drainage groove 41 and the drainage gap 32 can also be quickly thrown out under the action of centrifugal force. Since there are gaps between the water throwing ring 2 and the end cover 4 and the baffle 3, they will not contact and wear each other, and a non-contact sealing effect can be achieved, thus effectively overcoming the problems existing in the prior art.

[0024] Refer to Figure 1 and Figure 2 The first water blocking part 21 includes a first drainage inclined platform 211 and a blocking part 212 which are connected to each other. The first drainage inclined platform 211 extends obliquely from outside the drainage groove 41 to the notch of the drainage groove 41, and the blocking part 212 extends horizontally into the drainage groove 41. Specifically, the first drainage inclined platform 211 can play a role in drainage assistance, so that the sundries on the water throwing ring 2 are quickly thrown off under the action of centrifugal force; the blocking part 212 is parallel to the upper and lower side walls of the drainage groove 41, thereby separating the drainage groove 41 into a U-shaped structure. Thus, while ensuring an appropriate gap between the blocking part 212 and the inner side wall of the drainage groove 41, the blocking effect on sundries is improved, and sundries are effectively prevented from entering the drainage groove 41.

[0025] Refer to Figure 1 and Figure 2 The second water blocking part 31 is provided with a second drainage inclined platform 311 parallel to the first drainage inclined platform 211. The second drainage inclined platform 311 can also play a role in drainage, so that the sundries in the drainage gap 32 are quickly thrown out under the action of centrifugal force.

[0026] Refer to Figure 1 and Figure 2 The notch of the drainage groove 41 is in a trumpet-shaped structure that gradually expands from inside to outside. Such a design can play a role in drainage assistance, so that the sundries in the drainage groove 41 are quickly thrown out.

[0027] Reference Figure 1 and Figure 2 Figure 2

[0028] Reference Figure 1 and Figure 2 Figure 2

[0029] Reference Figure 1 and Figure 2 Figure 2

[0030] Reference Figure 1 and Figure 2 Figure 2

[0031] The above is only the specific implementation manner of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantive modification made to the present utility model using this concept shall fall within the scope of infringement of the protection scope of the present utility model.

Claims

1. A motor with anti-sand effect, characterized in that: It includes a rotating shaft and a water-slinging ring, a baffle plate and an end cover which are sequentially sleeved on the outside of the rotating shaft from front to back; the end cover is movably connected to the rotating shaft, and a drainage groove is provided at the front end of the end cover; the water-slinging ring is fixedly connected to the rotating shaft, and the water-slinging ring is provided with a first water retaining portion extending into the drainage groove; the baffle plate is fixedly connected to the end cover, and the baffle plate is provided with a second water retaining portion extending to the outside of the drainage groove, and a drainage gap connected to the drainage groove is provided between the baffle plate and the water-slinging ring.

2. The motor with anti-sand effect as claimed in claim 1, characterized in that: The first water retaining portion comprises a first drainage inclined platform and a blocking portion which are connected to each other. The first drainage inclined platform extends obliquely to the notch of the drainage ditch, and the blocking portion extends horizontally into the drainage ditch.

3. A motor with anti-sand effect as claimed in claim 2, characterized in that: The second water retaining portion is provided with a second drainage inclined platform parallel to the first drainage inclined platform.

4. The motor with anti-sand effect as claimed in claim 1, characterized in that: The notch of the drainage groove is in a trumpet-shaped structure that gradually expands from the inside to the outside.

5. The motor with anti-sand effect as claimed in claim 1, characterized in that: It also includes a flange, which is fixed to the end of the rotating shaft, and the water-slinging ring is fixedly connected to the flange.

6. The motor with anti-sand effect as claimed in claim 5, characterized in that: The flange is provided with an annular recess, and the water-slinging ring is provided with a flange matched with the annular recess.

7. The motor with anti-sand effect as claimed in claim 6, characterized in that: The water-slinging ring and the flange are interference-fitted.

8. The motor with anti-sand effect as claimed in claim 1, characterized in that: A labyrinth groove is provided between the end cover and the rotating shaft.

9. The motor with anti-sand effect as claimed in claim 8, characterized in that: A skeleton oil seal and a waterproof bearing are provided between the end cover and the rotating shaft, and the labyrinth groove and the skeleton oil seal are sequentially located at the front end of the waterproof bearing.

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