CN218787308U

CN218787308U - Speed reducer shell structure

Info

Publication number: CN218787308U
Application number: CN202223200343.1U
Authority: CN
Inventors: 蒋文志; 姚栓; 高涛
Original assignee: Shaanxi Fast Gear Co Ltd
Current assignee: Shaanxi Fast Gear Co Ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-04-04
Anticipated expiration: 2032-11-29

Abstract

The utility model relates to the field of passenger car electric drive systems, in particular to a speed reducer casing structure, which comprises a casing, a speed reducer labyrinth cavity and a paired casing labyrinth cavity, wherein the casing is provided with an input bearing hole, a middle bearing hole, an output bearing hole and an oil collecting tank structure; the matching shell labyrinth cavity is arranged on one side of the motor shell joint surface; the oil collecting groove structure is positioned on one side of the joint surface of the paired speed reducer shells. The utility model relates to a reduction gear shell structure will input dead eye, jackshaft bearing hole, output dead eye, oil trap structure, reduction gear maze cavity and pair casing maze cavity integration on a casing, reduced part quantity and improved product reliability.

Description

Speed reducer shell structure

Technical Field

The utility model relates to a passenger car electricity drives the system field, specifically is a reduction gear shell structure.

Background

Passenger car electric drive systems are generally designed by integrating a speed reducer, a motor and a controller. The controller can be designed in a matching mode according to product requirements, and if different products develop the controller, the development cost is high and the period is long. Therefore, in general, when the electric drive system is matched, more controllers are selected from the existing series controllers.

However, the following difficulties are encountered when the controller is long in size or the existing vehicle model has strict requirements on the volume of the electric drive system. Firstly, if the method of adding the bracket on the reducer casing is adopted, the assembly error accumulation is introduced, the installation plane of the motor controller may be inclined or the stress on some connecting bolts is increased, thereby having adverse effect on the whole system. Secondly, if motor casing when for axial water course cooling, prior art still need increase one section transition casing and be used for connecting motor casing and reduction gear casing, the sealed plane that increases more has increased the leakage risk and also makes whole case lengthen. In addition, the bearing support and the gear cavity provided by the common speed reducer shell only meet basic use functions, and the function integration level is low.

SUMMERY OF THE UTILITY MODEL

Lower problem to the reduction gear casing integrated level among the prior art, the utility model provides a reduction gear casing structure.

The utility model discloses a realize through following technical scheme:

a speed reducer casing structure comprises a casing, a speed reducer labyrinth cavity and a paired casing labyrinth cavity, wherein an input bearing hole, a middle bearing hole, an output bearing hole and an oil collecting tank structure are arranged on the casing; a first supporting rib plate is arranged on the outer side of the input bearing hole, a second supporting rib plate is arranged on the inner side of the shell, and the first supporting rib plate and the second supporting rib plate are arranged oppositely in a staggered mode to form a reducer labyrinth cavity; the matching shell labyrinth cavity is arranged on one side of the motor shell joint surface; the oil collecting groove structure is positioned on one side of the joint surface of the paired speed reducer shells.

Preferably, the oil collecting groove structure comprises an input bearing hole oil collecting structure, a middle bearing hole oil collecting structure and an output bearing hole oil collecting structure, and the middle bearing hole oil collecting structure and the output bearing hole oil collecting structure are obliquely arranged.

Preferably, a third supporting rib plate and a fourth supporting rib plate which are arranged oppositely are arranged on the outer side of the input bearing hole, and the third supporting rib plate and the fourth supporting rib plate form an oil collecting structure of the input bearing hole.

Preferably, the oil collecting structure of the input bearing hole, the oil collecting structure of the intermediate bearing hole and the oil collecting structure of the output bearing hole are all obliquely arranged.

Preferably, a placing structure is further arranged on one side of the shell where the mating surface of the shell of the speed reducer is located, and a magnet is placed on the placing structure.

Preferably, the shell is further provided with a first controller mounting and supporting boss and a second controller mounting and supporting boss, the first controller mounting and supporting boss and the second controller mounting and supporting boss are respectively provided with a mounting hole, and the mounting holes are used for being connected with the controller.

Preferably, fifth supporting rib plates are arranged between the first controller mounting and supporting boss and the shell and between the second controller mounting and supporting boss and the shell.

Preferably, the fifth support rib plate is arranged obliquely.

Preferably, a sixth supporting rib plate is arranged on the outer side of the output shaft bearing hole, the sixth supporting rib plate is located on one side of the motor shell joint surface, and part of the sixth supporting rib plate is connected with the fifth supporting rib plate.

Preferably, a water channel structure is further arranged on one side of the motor shell combination surface of the shell, and a round corner structure is arranged at an inlet of the water channel structure.

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

the utility model relates to a speed reducer shell structure supports speed reducer side water course, controller, motor bearing support, ventilative labyrinth structure, collects the oil structure etc. function integration on a casing, has reduced part quantity and has improved product reliability, reduces the oil leak risk that the oil mist gathering causes simultaneously. When the input shaft system rotates forwards, the oil thrown above the shell or the oil mist formed in the upper space is blocked by the first support rib plate and the second support rib plate; when the input shaft system rotates forwards, the baffle plate between the labyrinth cavities blocks the input shaft system.

In addition, two sides of the input shaft system are respectively provided with one of the bearing holes of the motor shaft and the input shaft, so that the integration level of the shell of the speed reducer is further improved.

Furthermore, when oil is stirred and splashed, the oil collecting effect is achieved to lubricate the bearings at the corresponding positions, and the bearing failure under the high-speed operation is avoided.

Furthermore, the magnet is used for adsorbing scrap iron in oil, so that the oil is economical and clean.

Furthermore, the sixth supporting rib plate is connected with the fifth supporting rib plate, so that the strength of the first controller at the mounting supporting boss and the output bearing hole can be ensured simultaneously.

Furthermore, the fillet structure can reduce the water resistance when the cooling liquid passes through, and the cooling effect is increased.

Drawings

Fig. 1 is a schematic view of a side of a mating reducer case junction surface of a reducer case structure according to the present invention;

fig. 2 is a schematic view of a side of a motor housing joint surface of a reducer housing structure according to the present invention;

FIG. 3 is a schematic diagram of a labyrinth cavity of a reducer casing structure according to the present invention;

FIG. 4 is a schematic view of the ventilation labyrinth chamber of the paired shells of the speed reducer housing structure of the present invention;

fig. 5 is a schematic view of the water channel structure of the speed reducer case structure of the present invention.

In the figure, 1-1, a third support rib plate; 1-2, a fourth supporting rib plate; 2-1, an oil collecting structure of an intermediate bearing hole; 2-2, an oil collecting structure of an output shaft bearing hole; 3. mating reducer shell junction surfaces; 4. a placement structure; 5-1, mounting a support boss on the first controller; 5-2, mounting a support boss on the second controller; 6. a motor shell joint surface; 7. an input bearing bore; 8. a waterway structure; 9. a fillet structure; 10. a first support rib plate; 11. a second support rib plate; 12. a fifth support rib plate; 13. a sixth support rib plate; b. a reducer labyrinth cavity; c. a vent plug mounting interface; d. the matching shell is a ventilation labyrinth cavity.

Detailed Description

The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.

The utility model discloses a speed reducer casing structure, refer to fig. 1 and 2, including casing, speed reducer labyrinth cavity b and pairing casing labyrinth cavity, be equipped with input bearing hole 7, middle bearing hole, output bearing hole and oil collecting tank structure on the casing, the both sides of casing are respectively pairing speed reducer casing faying surface 3 and motor casing faying surface 6, refer to fig. 3, speed reducer labyrinth cavity b sets up in one side where pairing speed reducer casing faying surface 3 locates; a first supporting rib plate 10 is arranged on the outer side of the input bearing hole 7, a second supporting rib plate 11 is arranged on the inner side of the shell, and the first supporting rib plate 10 and the second supporting rib plate 11 are arranged oppositely in a staggered mode to form a reducer labyrinth cavity b; referring to fig. 4, the mating housing labyrinth cavity is disposed on the side of the motor housing joint surface 6.

Referring to fig. 1, the sump structure is located on one side of the mating surface 3 of the paired reducer housing. The oil collecting groove structure comprises an input bearing hole oil collecting structure, a middle bearing hole oil collecting structure 2-1 and an output bearing hole oil collecting structure 2-2, wherein the middle bearing hole oil collecting structure 2-1 and the output bearing hole oil collecting structure 2-2 are obliquely arranged, and the included angle between the middle bearing hole oil collecting structure and the bottom plane of the bearing hole groove is 45-60 degrees. The third supporting rib plate 1-1 and the fourth supporting rib plate 1-2 which are oppositely arranged are arranged on the outer side of the input bearing hole 7, the third supporting rib plate 1-1 and the fourth supporting rib plate 1-2 form an input bearing hole oil collecting structure, and the input bearing hole oil collecting structure is lower than the bottom surface of a bearing seat of the input shaft, so that a small amount of lubricating oil can be conveniently stored.

And a placing structure 4 is also arranged on one side of the shell where the paired reducer shell joint surface 3 is positioned, and a magnet is placed at the placing structure 4.

Referring to fig. 2, the shell is further provided with a first controller mounting and supporting boss 5-1 and a second controller mounting and supporting boss 5-2, and the first controller mounting and supporting boss 5-1 and the second controller mounting and supporting boss 5-2 are both provided with mounting holes for connecting with a controller.

Fifth support rib plates 12 which are obliquely arranged are arranged between the first controller installation support boss 5-1 and the shell and between the second controller installation support boss 5-2 and the shell.

The outer side of the output bearing hole is provided with a sixth supporting rib plate 13, the sixth supporting rib plate 13 is positioned on one side of the motor shell joint surface 6, and part of the sixth supporting rib plate 13 and the fifth supporting rib plate 12 are connected to form a whole, so that the strength of the first controller installation supporting boss 5-1 and the output bearing hole can be ensured at the same time.

Referring to fig. 5, a water channel structure 8 is further disposed on a side of the motor housing joint surface 6 of the housing, and a rounded corner structure 9 is disposed at an inlet of the water channel structure 8, so that water resistance is reduced when a coolant passes through the rounded corner structure, and cooling effect is increased.

And a ventilation plug mounting interface c is also arranged on the shell and is communicated with the labyrinth cavity b of the speed reducer.

In the embodiment, a1, a2 and a3 are respectively the reverse rotation directions of the input shafting, the middle shafting and the output shafting, when the input shafting rotates forwards, oil thrown above the shell or oil mist formed in the upper space is blocked by the first support rib plate 10 and the second support rib plate 11; when the input shaft system rotates forwards, the baffle plate between the labyrinth cavities stops the input shaft system. The utility model relates to a reduction gear shell structure will input dead eye 7, middle dead eye, output dead eye, oil trap structure, reduction gear maze cavity b and pair casing maze cavity integration on a casing, reduced part quantity and improved the product reliability.

The above-mentioned embodiments are only preferred embodiments of the present invention, and it should be understood by those skilled in the art that the technical solution of the present invention can be modified and replaced easily without departing from the spirit and principle of the present invention, and the modified and replaced embodiments also fall within the protection scope of the appended claims.

Claims

1. A speed reducer shell structure is characterized by comprising a shell, a speed reducer labyrinth cavity (b) and a paired shell labyrinth cavity, wherein an input bearing hole (7), an intermediate bearing hole, an output bearing hole and an oil collecting tank structure are arranged on the shell, a paired speed reducer shell joint surface (3) and a motor shell joint surface (6) are respectively arranged on two sides of the shell, and the speed reducer labyrinth cavity (b) is arranged on one side where the paired speed reducer shell joint surface (3) is located; a first supporting rib plate (10) is arranged on the outer side of the input bearing hole (7), a second supporting rib plate (11) is arranged on the inner side of the shell, and the first supporting rib plate (10) and the second supporting rib plate (11) are arranged oppositely in a staggered mode to form a reducer labyrinth cavity (b); the matching shell labyrinth cavity is arranged on one side of the motor shell joint surface (6); the oil collecting groove structure is positioned on one side of the joint surface (3) of the paired speed reducer shells.

2. The decelerator housing structure according to claim 1, wherein the oil sump structure includes an input bearing hole oil collecting structure, a middle bearing hole oil collecting structure (2-1) and an output bearing hole oil collecting structure (2-2), and the middle bearing hole oil collecting structure (2-1) and the output bearing hole oil collecting structure (2-2) are obliquely arranged.

3. The reducer casing structure according to claim 2, wherein a third support rib plate (1-1) and a fourth support rib plate (1-2) which are arranged oppositely are arranged on the outer side of the input bearing hole (7), and the third support rib plate (1-1) and the fourth support rib plate (1-2) form an oil collecting structure of the input bearing hole.

4. The reducer housing structure according to claim 2, wherein the input bearing hole oil collecting structure, the intermediate bearing hole oil collecting structure (2-1), and the output bearing hole oil collecting structure (2-2) are all arranged obliquely.

5. The shell structure of the reducer according to claim 1, wherein a placing structure (4) is further arranged on one side of the shell where the mating reducer shell joint surface (3) is located, and a magnet is placed on the placing structure (4).

6. The reducer casing structure according to claim 1, wherein the casing is further provided with a first controller mounting and supporting boss (5-1) and a second controller mounting and supporting boss (5-2), and the first controller mounting and supporting boss (5-1) and the second controller mounting and supporting boss (5-2) are both provided with mounting holes for connecting a controller.

7. The reducer case structure according to claim 6, wherein fifth support rib plates (12) are arranged between the first controller mounting support boss (5-1) and the case and between the second controller mounting support boss (5-2) and the case.

8. Decelerator housing structure according to claim 7, characterized in that the fifth support rib (12) is arranged obliquely.

9. The reducer casing structure according to claim 8, wherein a sixth supporting rib plate (13) is arranged outside the output bearing hole, the sixth supporting rib plate (13) is located on one side of the motor casing joint surface (6), and part of the sixth supporting rib plate (13) is connected with the fifth supporting rib plate (12).

10. A reducer case structure according to claim 1, wherein a water channel structure (8) is further provided on a side of the case where the motor case joint surface (6) is located, and a rounded corner structure (9) is provided at an inlet of the water channel structure (8).