CN219975143U

CN219975143U - Rear bearing cap sealing structure

Info

Publication number: CN219975143U
Application number: CN202321350327.2U
Authority: CN
Inventors: 陈曦; 何君珂
Original assignee: Shaanxi Fast Gear Co Ltd
Current assignee: Shaanxi Fast Gear Co Ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2023-11-07
Anticipated expiration: 2033-05-30

Abstract

The utility model relates to the field of speed changers, in particular to a rear bearing cover sealing structure. The novel bearing cover comprises a rear bearing cover shell, wherein a flange plate is sleeved in the rear bearing cover shell, an oil seal is arranged between the rear bearing cover shell and the flange plate, a spigot is arranged on the rear bearing cover shell, a dust cover is sleeved on the spigot and the flange plate, and dust can be effectively prevented from entering the rear bearing cover shell through the arrangement of the dust cover. A plurality of communicated drainage grooves are formed in the end face and the spigot of the rear bearing cover shell, and are used for discharging accumulated liquid in the rear bearing cover shell, so that the drying of the inside of the rear bearing cover shell is guaranteed, and corrosion is prevented. The drainage tank and the dust cover form a U-shaped channel, so that dust can be effectively prevented from entering the inside of the rear bearing cover shell while the drainage tank discharges accumulated liquid. And the utility model has less reconstruction to the original device, and is beneficial to updating and upgrading the existing device.

Description

Rear bearing cap sealing structure

Technical Field

The utility model relates to the field of speed changers, in particular to a rear bearing cover sealing structure.

Background

Today, the new energy vehicle type is vigorously developed, and the 6E240 series gearbox products already occupy a place in the slag, stirring and traction vehicle type of each big main machine factory. The motorcycle type that uses 6E240 product is used in the mining area more, and the operating mode is comparatively abominable, and sand dust is great in the air, and often needs to spray to guarantee that the outward appearance is clean. Under such complex conditions, sand dust and water accumulation can have a great negative effect on sealing parts of the transmission, and cause faults such as oil leakage and the like.

At present, although the dust cover structure commonly used can prevent outside sand and dust from entering to a certain extent, due to the design of complete sealing, part of liquid during spraying can be accumulated in the protective cover while dust is protected. Because the accumulated liquid can not be discharged in time, after a period of time, the accumulated liquid can cause the contact surface of the flange and the oil seal to generate rust, further abrade the oil seal lip and accelerate the damage of the gearbox.

Disclosure of Invention

The utility model aims to overcome the defects and provide a sealing structure of a rear bearing cover, which can timely discharge internal effusion and prevent the contact surface of a flange and an oil seal from being corroded while guaranteeing the sealing and dust prevention of the rear bearing cover.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a rear bearing cap seal structure, includes rear bearing cap casing, rear bearing cap casing endotheca is equipped with the ring flange, is equipped with the oil blanket between rear bearing cap casing and the ring flange, is provided with the tang on the rear bearing cap casing, and the cover is equipped with the dust cover on tang and the ring flange, has seted up the water drainage tank of a plurality of intercommunications on the terminal surface of rear bearing cap casing and the tang, and water drainage tank constitutes U type passageway with the dust cover.

The section of the external port of the U-shaped channel is smaller than that of the drainage channel.

The dust cover is closely attached to the flange plate.

The end face and the spigot of the rear bearing cover shell are tightly attached to the dust cover.

The tang includes tang plane and tang terminal surface, and the tang terminal surface is closely laminated with the terminal surface of dust cover, and the tang plane is closely laminated with the internal surface of dust cover.

The spigot plane and the spigot end face are provided with communicated drainage grooves.

The cross section of the drainage groove is U-shaped.

The intersection of the drainage groove and the spigot is an arc surface transition.

The rear bearing cover shell is provided with a dust cover assembly chamfer and an oil seal assembly chamfer.

The rear bearing cover shell, the dust cover, the oil seal and the flange plate are all coaxially arranged.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model comprises a rear bearing cover shell, wherein a flange plate is sleeved in the rear bearing cover shell, an oil seal is arranged between the rear bearing cover shell and the flange plate, a spigot is arranged on the rear bearing cover shell, a dust cover is sleeved on the spigot and the flange plate, and the dust cover can effectively prevent dust from entering the rear bearing cover shell. A plurality of communicated drainage grooves are formed in the end face and the spigot of the rear bearing cover shell, and are used for discharging accumulated liquid in the rear bearing cover shell, so that the drying of the inside of the rear bearing cover shell is guaranteed, and corrosion is prevented. The drainage tank and the dust cover form a U-shaped channel, so that dust can be effectively prevented from entering the inside of the rear bearing cover shell while the drainage tank discharges accumulated liquid. And the utility model has less reconstruction to the original device, and is beneficial to updating and upgrading the existing device.

Furthermore, the section of the external port of the U-shaped channel is smaller than that of the drainage channel, so that the blocking effect on dust is further enhanced while the drainage of accumulated liquid is not influenced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2a is a schematic structural view of a rear bearing cap housing of the present utility model;

FIG. 2b is an enlarged view of a portion of FIG. 2 a;

FIG. 3a is a right side view of the rear bearing cap housing of the present utility model;

FIG. 3b is an enlarged view of a portion of FIG. 3 a;

FIG. 4 is a partial schematic view of the assembly relationship of the rear bearing cap housing and dust cap;

fig. 5 is an assembly relationship diagram of a grooved rear bearing cap housing and dust cap.

Wherein, 1, the back bearing cover shell; 2. a dust cover; 3. an oil seal; 4. a flange plate; 101. a spigot; 1011. a spigot plane; 1012. a spigot end face; 102. assembling and chamfering the dust cover; 103. chamfering oil seal assembly; 104. and a drainage channel.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1, fig. 4 and fig. 5, a sealing structure of a rear bearing cover comprises a rear bearing cover shell 1, a flange plate 4 is sleeved in the rear bearing cover shell 1, an oil seal 3 is arranged between the rear bearing cover shell 1 and the flange plate 4, a spigot 101 is arranged on the rear bearing cover shell 1, a dust cover 2 is sleeved on the spigot 101 and the flange plate 4, a plurality of communicated drainage grooves 104 are formed in the end face of the rear bearing cover shell 1 and the spigot 101, and the drainage grooves 104 and the dust cover 2 form a U-shaped channel.

Preferably, the utility model comprises a rear bearing cover shell 1, a flange 4 is sleeved in the rear bearing cover shell 1, an oil seal 3 is arranged between the rear bearing cover shell 1 and the flange 4, a spigot 101 is arranged on the rear bearing cover shell 1, a dust cover 2 is sleeved on the spigot 101 and the flange 4, dust can be effectively prevented from entering the rear bearing cover shell 1 by the arrangement of the dust cover 2, and the spigot 101 and the dust cover 2 are in transition fit, so that the effect of preventing dust can be achieved to the greatest extent. A plurality of communicated drainage grooves 104 are formed in the end face of the rear bearing cover shell 1 and the spigot 101, and the drainage grooves 104 are used for discharging accumulated liquid entering the rear bearing cover shell 1, so that the inside of the rear bearing cover shell 1 is ensured to be dried, and the contact surface of the flange and the oil seal is prevented from being corroded. The drainage tank 104 and the dust cover 2 form a U-shaped channel, so that dust and water vapor can be effectively prevented from entering the rear bearing cover shell 1 when the drainage tank 104 discharges accumulated liquid, and the influence of the drainage tank 104 on the dustproof function of the sealing structure is weakened. And the utility model has less reconstruction to the original device, is beneficial to updating and upgrading the existing device, and reduces the cost of updating and reconstruction.

Preferably, as shown in fig. 4 and 5, the cross section of the external port of the U-shaped channel is smaller than that of the drainage channel 104, so that the blocking effect on dust is further enhanced while the drainage of the accumulated liquid is not affected.

Preferably, as shown in fig. 1, the dust cover 2 is tightly attached to the flange 4, so that the sealing performance of the device is enhanced.

As shown in fig. 1, 4 and 5, the end face of the rear bearing cap housing 1 and the spigot 101 are tightly attached to the dust cover 2, further enhancing the sealability of the device.

As shown in fig. 2a, 2b, 3a, 3b, 4 and 5, the spigot 101 includes a spigot plane 1011 and a spigot end face 1012, the spigot end face 1012 is closely attached to the end face of the dust cover 2, and the spigot plane 1011 is closely attached to the inner surface of the dust cover 2.

Preferably, as shown in fig. 4, the spigot plane 1011 is arranged perpendicular to the spigot end face 1012, the spigot plane 1011, the spigot end face 1012 and the outer surface of the rear bearing cover housing 1 form a step structure, and the end face of the dust cover 2 is coplanar with the outlet interface of the drain groove 104.

Preferably, as shown in fig. 5, the spigot end surface 1012 may be provided with a groove inwards, and the end of the dust cover 2 is located in the groove of the spigot end surface 1012, so that the external length of the U-shaped channel is lengthened, which is beneficial to preventing dust and water vapor from entering the rear bearing cap housing 1.

As shown in fig. 2b, 3b, 4 and 5, both the spigot plane 1011 and the spigot end face 1012 are provided with a communicating drainage channel 104.

Preferably, as shown in fig. 3b, the cross section of the drainage groove 104 is U-shaped, and the cross section shape of the drainage groove 104 can be changed according to the requirements in actual production and processing requirements.

Preferably, the intersection of the drainage groove 104 and the spigot 101 is an arc surface transition, so that the drainage of the inner effusion is facilitated.

As shown in fig. 2a, the rear bearing cap housing 1 is provided with a dust cap assembling chamfer 102 and an oil seal assembling chamfer 103, facilitating the assembling of the dust cap 2 and the oil seal 3.

As shown in fig. 1, the rear bearing cap housing 1, the dust cap 2, the oil seal 3, and the flange 4 are all coaxially disposed.

The installation steps of the device are as follows:

the oil seal 3 and the rear bearing cover shell 1 are pressed into a whole, then the flange 4 and the dust cover 2 are assembled, and in the assembling process, the dust cover 2 and the spigot 101 are in transition fit.

In summary, the above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a back bearing cap seal structure, a serial communication port, including back bearing cap casing (1), back bearing cap casing (1) endotheca is equipped with ring flange (4), be equipped with oil blanket (3) between back bearing cap casing (1) and ring flange (4), be provided with tang (101) on back bearing cap casing (1), the cover is equipped with dust cover (2) on tang (101) and ring flange (4), set up water drainage tank (104) of a plurality of intercommunication on the terminal surface of back bearing cap casing (1) and tang (101), water drainage tank (104) constitute U type passageway with dust cover (2).

2. A rear bearing cap seal as claimed in claim 1, wherein the U-shaped channel outer port cross section is smaller than the drain channel (104) cross section.

3. A rear bearing cap seal according to claim 1, wherein the dust cap (2) is in close contact with the flange (4).

4. A rear bearing cap seal structure as claimed in claim 1, wherein the end face and the spigot (101) of the rear bearing cap housing (1) are both in close contact with the dust cap (2).

5. A rear bearing cap seal structure as claimed in claim 4, wherein the spigot (101) includes a spigot plane (1011) and a spigot end face (1012), the spigot end face (1012) being closely fitted to the end face of the dust cover (2), the spigot plane (1011) being closely fitted to the inner surface of the dust cover (2).

6. A rear bearing cap seal as claimed in claim 5, wherein the spigot plane (1011) and the spigot end face (1012) are each provided with a communicating drainage channel (104).

7. A rear bearing cap seal as claimed in claim 6, wherein the drain groove (104) is U-shaped in cross section.

8. A rear bearing cap seal according to claim 7, wherein the intersection of the drain groove (104) and the spigot (101) is arcuate.

9. A rear bearing cap seal structure as claimed in claim 1, wherein the rear bearing cap housing (1) is provided with a dust cap fitting chamfer (102) and an oil seal fitting chamfer (103).

10. A rear bearing cap seal arrangement as claimed in claim 1, wherein the rear bearing cap housing (1), dust cap (2), oil seal (3) and flange (4) are all coaxially arranged.