CN216684813U

CN216684813U - Combined bidirectional axial force bearing structure

Info

Publication number: CN216684813U
Application number: CN202220340072.0U
Authority: CN
Inventors: 李东杰; 何欢
Original assignee: Qingdao Cehai Automation Technology Co ltd
Current assignee: Qingdao Cehai Automation Technology Co ltd
Priority date: 2022-02-19
Filing date: 2022-02-19
Publication date: 2022-06-07
Anticipated expiration: 2032-02-19

Abstract

The utility model relates to a modular two-way axial force bearing structure belongs to the motor field, including the casing, the casing internal rotation be connected with the output shaft's of motor transmission shaft, the transmission shaft rotates along with the output shaft is synchronous, the cover is equipped with two thrust bearing on the transmission shaft, the transmission shaft corresponds position department between two thrust bearing and is provided with the butt flange, the both sides of butt flange butt respectively in one side that two thrust bearing are close to each other, one side that the butt flange was kept away from to two thrust bearing all connects in the casing. The deep groove ball shaft of the underwater motor is improved, and the condition that the service life is shortened due to the fact that the deep groove ball shaft bears the axial force is improved.

Description

Combined bidirectional axial force bearing structure

Technical Field

The application relates to the field of motors, in particular to a combined bidirectional axial force bearing structure.

Background

Along with the development of scientific research activities and entertainment activities, underwater exploration and diving activities are more and more popular, underwater activities are often assisted by using an underwater propeller or a submersible vehicle, deep groove ball bearings matched with a motor shaft are often arranged in underwater motors of related equipment, and can bear larger radial loads, but the axial load bearing capacity is lower.

According to the related technology, in the navigation working process of the propeller and the underwater vehicle, the inertia of equipment load and the resistance of water can enable the output shaft of the motor to bear the axial force in the propelling or decelerating process, the output shaft transmits the axial force to the deep groove ball bearing, the long-term applied axial force can cause the service life of the deep groove ball bearing to be shortened, the output shaft shakes and generates noise and the like, and the hall sweeping can be caused in serious conditions, so that the service life of the motor is shortened.

SUMMERY OF THE UTILITY MODEL

In order to improve the condition that the influence that the deep groove ball axle of motor under water bore axial force reduces life, this application provides a modular two-way axial force bearing structure.

The application provides a modular two-way axial force bearing structure adopts following technical scheme:

the utility model provides a modular two-way axial force bearing structure, include the casing of being connected with motor housing, the casing internal rotation be connected with the output shaft's of motor transmission shaft, the transmission shaft rotates along with the output shaft is synchronous, the cover is equipped with two thrust bearing on the transmission shaft, the transmission shaft corresponds position department between two thrust bearing and is provided with the butt flange, the both sides of butt flange butt respectively in the one side that two thrust bearing are close to each other, one side that the butt flange was kept away from to two thrust bearing all connects in the casing.

Through adopting above-mentioned scheme, when the transmission shaft received the axial force, two thrust bearing limited the butt flange, and the butt flange of transmission shaft transmits the axial force for thrust bearing, and thrust bearing transmits the shell for the motor with the axial force through the casing. The thrust bearing transmits the axial force of the transmission shaft to the motor shell, so that the influence of the axial force of the transmission shaft on the deep groove ball bearing is reduced, the working condition of the deep groove ball bearing is improved, the service life of the deep groove ball bearing is prolonged, the shaking condition of an output shaft of the motor is reduced, and the service life of the whole motor is prolonged. Simultaneously, compared with the common scheme of using the conical roller bearing, the scheme of the cooperation work of the two thrust bearings and the deep groove ball bearing of the motor has the advantages that the volume of the thrust bearing is smaller under the condition of the same performance, the integration to the motor is more facilitated, the structure compatibility is improved, and the commercial application field of products is enlarged.

Preferably, the two ends of the casing are provided with sealing rings at positions corresponding to the positions of the transmission shaft, the sealing rings are sleeved on the transmission shaft and are rotatably connected with the transmission shaft, and the sealing rings fill a gap between the transmission shaft and the casing.

By adopting the scheme, the sealing ring improves the sealing property between the casing and the transmission shaft, reduces the probability of water inflow of the underwater casing, and improves the running stability of the transmission shaft.

Preferably, an annular mounting seat is arranged between the sealing ring corresponding to the machine shell and the thrust bearing adjacent to the sealing ring, the mounting seat is sleeved on the transmission shaft and has a gap with the transmission shaft, and one side, away from each other, of the two thrust bearings is connected to the mounting seat.

By adopting the scheme, the thrust bearing transmits the axial force to the casing through the mounting seat connected to the casing, the disturbance to the sealing ring when the thrust bearing is stressed is reduced, and the sealing effect and the service life of the sealing ring are improved.

Preferably, the two ends of the casing are provided with limit flanges corresponding to the positions of the seal rings, and one side of each seal ring, which is far away from each other, can abut against the limit flanges.

Through adopting above-mentioned scheme, limit flange butt in the outside of sealing washer, limit flange improves the installation stability of sealing washer and reduces the probability that the sealing washer drops inefficacy.

Preferably, the transmission shaft is provided with the connecting key that is used for with output shaft complex near motor one end, and the transmission shaft is kept away from motor one end and is provided with the keyway that is used for with screw complex.

Through adopting above-mentioned scheme, the setting of connecting key and keyway is convenient for the transmission shaft nimble with spare part cooperation such as motor and screw, improve the commonality of transmission shaft.

Preferably, one end of the machine shell, which is close to the motor, is provided with a plurality of threaded holes for matching with the motor shell.

Through adopting above-mentioned scheme, the casing passes through the screw hole and is in the same place with bolted connection on the motor housing, and the casing transmits the axial force of transmission shaft for the shell of motor, reduces the influence of axial force to the output shaft, and the screw hole is convenient for the assembly of casing and motor housing simultaneously, improves the convenience of casing installation.

Preferably, lubricating oil is filled between the machine shell and the transmission shaft.

Through adopting above-mentioned scheme, lubricating oil reduces the frictional force of thrust bearing during operation, reduces the frictional force of transmission shaft and thrust bearing, improves the smoothness nature of this equipment operation, and lubricating oil reduces the rusty probability of equipment after wrapping up thrust bearing and transmission shaft simultaneously, improve equipment's life.

Preferably, the thrust bearing is a one-way thrust ball bearing or a two-way thrust ball bearing.

By adopting the scheme, the one-way thrust ball bearing has the advantages of simple structure, stable operation and low comprehensive cost of equipment; the bidirectional thrust ball bearing can bear axial loads in two directions, and the axial force bearing effect of the equipment is improved.

In summary, the present application has the following beneficial effects:

1. the thrust bearing transmits the axial force of the transmission shaft to the motor shell, so that the influence of the axial force of the transmission shaft on the deep groove ball bearing is reduced, the working condition of the deep groove ball bearing is improved, the service life of the deep groove ball bearing is prolonged, the condition of the jitter of an output shaft of the motor is reduced, and the service life of the whole motor is prolonged;

2. compared with the common scheme of using a conical roller bearing, the scheme of matching the two thrust bearings with the deep groove ball bearing of the motor for work has the advantages that the thrust bearings are smaller in size under the condition of the same performance, the integration on the motor is facilitated, the structure compatibility is improved, and the commercial application field of products is enlarged;

3. the sealing ring improves the sealing performance between the casing and the transmission shaft, reduces the probability of water inflow of the underwater casing, and improves the stability of the operation of the transmission shaft.

Drawings

FIG. 1 is a schematic structural view of a modular bi-directional axial force-bearing structure according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a modular bi-directional axial force-bearing structure according to an embodiment of the present application.

Description of reference numerals: 1. a housing; 11. a threaded hole; 12. a seal ring; 13. a limiting flange; 2. a mounting seat; 21. a thrust bearing; 3. a drive shaft; 31. an abutment flange; 32. a connecting bond; 33. a keyway.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses a combined bidirectional axial force bearing structure. Referring to fig. 1 and 2, the motor comprises a housing 1, and one end of the housing 1, which is close to a motor, is provided with a plurality of threaded holes 11 for being matched with a motor shell. Casing 1 is in the same place through the bolted connection on screw hole 11 and the motor housing, and casing 1 transmits the axial force of equipment for the shell of motor, reduces the influence of axial force to the output shaft, and screw hole 11 is convenient for casing 1 and motor housing's assembly simultaneously, improves the convenience of casing 1 installation.

Referring to fig. 1 and 2, a transmission shaft 3 connected to an output shaft of a motor is rotatably connected to a housing 1, the transmission shaft 3 rotates synchronously with the output shaft, and lubricating oil is filled between the housing 1 and the transmission shaft 3. The cover is equipped with two thrust bearing 21 on the transmission shaft 3, transmission shaft 3 corresponds position fixedly connected with butt flange 31 between two thrust bearing 21, butt flange 31's both sides respectively the butt in the one side that two thrust bearing 21 are close to each other, one side that butt flange 31 was kept away from to two thrust bearing 21 all is connected with

annular mount pad

2, 2 covers of mount pad are located transmission shaft 3 and are left the clearance with transmission shaft 3, all mount pads 2 all connect in casing 1. When the transmission shaft 3 receives the axial force, the two thrust bearings 21 limit the abutting flange 31, the abutting flange 31 of the transmission shaft 3 transmits the axial force to the thrust bearing 21, the thrust bearing 21 transmits the axial force to the machine shell 1 through the mounting seat 2 connected to the machine shell 1, the influence of the axial force on the output shaft of the motor is reduced, the service life reduction of the deep groove ball bearing and the shaking condition of the output shaft are improved, and the service life of the motor is prolonged.

Referring to fig. 1 and 2, the thrust bearing 21 is a one-way thrust ball bearing or a two-way thrust ball bearing. The one-way thrust ball bearing has simple structure, stable operation and low comprehensive cost of equipment; the bidirectional thrust ball bearing can bear axial loads in two directions, and the axial force bearing effect of the equipment is improved.

Referring to fig. 1 and 2, sealing rings 12 are respectively arranged at positions of two ends of a machine shell 1 corresponding to positions of a transmission shaft 3, the transmission shaft 3 is sleeved with the sealing rings 12 and is rotatably connected with the transmission shaft 3, the sealing rings 12 fill a gap between the transmission shaft 3 and the machine shell 1, one side, close to each other, of each of the two sealing rings 12 can abut against a thrust bearing 21, position positions of two ends of the machine shell 1 corresponding to the sealing rings 12 are respectively provided with a limiting flange 13, and one side, far away from each other, of each of the two sealing rings 12 can abut against the limiting flange 13. The sealing ring 12 improves the sealing property between the casing 1 and the transmission shaft 3, reduces the probability of water inflow of the underwater casing 1, and improves the running stability of the transmission shaft 3. The limit flange 13 abuts against the outer side of the seal ring 12, and the limit flange 13 improves the installation stability of the seal ring 12 and reduces the probability of the seal ring 12 falling and failing.

Referring to fig. 1 and 2, one end of the transmission shaft 3, which is close to the motor, is provided with a connecting key 32 for being matched with an output shaft, and one end of the transmission shaft 3, which is far from the motor, is provided with a key groove 33 for being matched with a propeller. The arrangement of the connecting key 32 and the key groove 33 facilitates the flexible matching of the transmission shaft 3 with parts such as a motor, a propeller and the like, and improves the universality of the transmission shaft 3.

The implementation principle of the combined bidirectional axial force bearing structure in the embodiment of the application is as follows: when the transmission shaft 3 is subjected to an axial force, the two thrust bearings 21 limit the abutting flange 31, the abutting flange 31 of the transmission shaft 3 transmits the axial force to the thrust bearing 21, and the thrust bearing 21 transmits the axial force to the shell of the motor through the machine shell 1. The thrust bearing 21 transmits the axial force of the transmission shaft 3 to the motor shell, so that the influence of the axial force of the transmission shaft 3 on the deep groove ball bearing is reduced, the working condition of the deep groove ball bearing is improved, the service life of the deep groove ball bearing is prolonged, the shaking condition of an output shaft of the motor is reduced, and the service life of the whole motor is prolonged. Meanwhile, compared with the common scheme of using a conical roller bearing, the scheme of matching the two thrust bearings 21 with the deep groove ball bearing of the motor for working has the advantages that the volume of the thrust bearing 21 is smaller under the condition of the same performance, the integration on the motor is more facilitated, the structure compatibility is improved, and the commercial application field of products is enlarged.

The embodiment of the application improves the condition that the deep groove ball shaft of the underwater motor bears the influence of the axial force and the service life is shortened.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a modular two-way axial force bearing structure which characterized in that: including casing (1) of being connected with motor housing, casing (1) internal rotation is connected with transmission shaft (3) with the output shaft of motor, transmission shaft (3) rotate along with the output shaft is synchronous, the cover is equipped with two thrust bearing (21) on transmission shaft (3), transmission shaft (3) are provided with butt flange (31) corresponding position department between two thrust bearing (21), the both sides of butt flange (31) butt respectively in the one side that two thrust bearing (21) are close to each other, one side that butt flange (31) were kept away from in two thrust bearing (21) all connects in casing (1).

2. A modular bi-directional axial force bearing structure according to claim 1, wherein: the two ends of the machine shell (1) are provided with sealing rings (12) at positions corresponding to the transmission shaft (3), the transmission shaft (3) is sleeved with the sealing rings (12) and is rotatably connected with the transmission shaft (3), and the sealing rings (12) fill a gap between the transmission shaft (3) and the machine shell (1).

3. A modular bi-directional axial force bearing structure according to claim 2, wherein: casing (1) is provided with annular mount pad (2) corresponding between sealing washer (12) and the thrust bearing (21) adjacent with sealing washer (12), and transmission shaft (3) and leaving the clearance with transmission shaft (3) are located in mount pad (2) cover, and one side connection in mount pad (2) is kept away from each other to two thrust bearing (21).

4. A modular bi-directional axial force bearing structure according to claim 2, wherein: the positions of two ends of the machine shell (1) corresponding to the sealing rings (12) are respectively provided with a limiting flange (13), and one side, away from each other, of each of the two sealing rings (12) can abut against the limiting flange (13).

5. A modular bi-directional axial force bearing structure according to claim 1, wherein: one end of the transmission shaft (3) close to the motor is provided with a connecting key (32) matched with the output shaft, and one end of the transmission shaft (3) far away from the motor is provided with a key groove (33) matched with the propeller.

6. A modular bi-directional axial force bearing structure according to claim 1, wherein: one end of the machine shell (1) close to the motor is provided with a plurality of threaded holes (11) matched with the motor shell.

7. A modular bi-directional axial force bearing structure according to claim 1, wherein: lubricating oil is filled between the machine shell (1) and the transmission shaft (3).

8. A modular bi-directional axial force bearing structure according to claim 1, wherein: the thrust bearing (21) is a one-way thrust ball bearing or a two-way thrust ball bearing.