CN111140643A - Split type main reducer casing of electricity driving vehicle and car - Google Patents

Split type main reducer casing of electricity driving vehicle and car Download PDF

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Publication number
CN111140643A
CN111140643A CN202010086260.0A CN202010086260A CN111140643A CN 111140643 A CN111140643 A CN 111140643A CN 202010086260 A CN202010086260 A CN 202010086260A CN 111140643 A CN111140643 A CN 111140643A
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CN
China
Prior art keywords
supporting part
outer connecting
shell
connecting portion
flange
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Pending
Application number
CN202010086260.0A
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Chinese (zh)
Inventor
梁雅楠
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BAIC Group ORV Co ltd
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BAIC Group ORV Co ltd
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Publication date
Application filed by BAIC Group ORV Co ltd filed Critical BAIC Group ORV Co ltd
Priority to CN202010086260.0A priority Critical patent/CN111140643A/en
Publication of CN111140643A publication Critical patent/CN111140643A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/12—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of electric gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/025—Support of gearboxes, e.g. torque arms, or attachment to other devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/03—Gearboxes; Mounting gearing therein characterised by means for reinforcing gearboxes, e.g. ribs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/031—Gearboxes; Mounting gearing therein characterised by covers or lids for gearboxes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02034—Gearboxes combined or connected with electric machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02086—Measures for reducing size of gearbox, e.g. for creating a more compact transmission casing

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

The invention provides an electric driving split type main reducer shell and an automobile, wherein the main reducer shell comprises an outer connecting part and an inner supporting part, a shell large flange is arranged on the supporting part, a connecting part inner spigot is arranged in the shell large flange, one end of the inner supporting part is provided with a supporting part outer spigot, the supporting part outer spigot penetrates into the connecting part inner spigot and is connected in a welding manner, and the other end of the inner supporting part is connected with the inside of the outer connecting part; the large flange of the shell is connected with a driving motor. The split type main speed reducer shell of the electric driving vehicle also comprises a middle sleeve; round holes are arranged on two side faces of the outer connecting part, the middle sleeve penetrates through the two round holes and is in lap joint with the inner walls of the round holes, and the middle sleeve is in welded connection with the inner walls of the round holes. The split type main reducer shell of the electric driving vehicle rigidly connects the driving motor with the main reducer assembly, is integrated into a whole, does not need to be independently fixed with a vehicle frame or a vehicle body, reduces the arrangement space of the whole vehicle, increases the transmission efficiency, improves the production efficiency, reduces the production cost and reduces the risk of casting defects.

Description

Split type main reducer casing of electricity driving vehicle and car
Technical Field
The invention relates to the technical field of automobile main reducer shells, in particular to an electric driving split type main reducer shell and an automobile.
Background
The main speed reducer of the automobile is an assembly component which can realize the functions of speed reduction and torque increase, inter-wheel differential and force transmission direction change according to the structural requirements. In a new energy electric drive vehicle model, for a main reducer directly driven by a driving motor, the existing installation mode is that the driving motor is connected with a frame and a vehicle body, and the main reducer is connected with the frame and the vehicle body. The existing integration level is low, the arrangement space of the whole vehicle chassis is large, the structure is not compact enough, and the disassembly and the assembly are not convenient.
Disclosure of Invention
The invention provides an electric driving vehicle split type main speed reducer shell and a vehicle. The existing problems are that the integration level is low, the arrangement space of a chassis of the whole vehicle is large, the structure is not compact enough, and the disassembly and the assembly are not convenient.
To solve the above technical problem, an embodiment of the present invention provides the following solutions:
an electric driving vehicle split type main speed reducer shell comprises an outer connecting part and an inner supporting part arranged inside the outer connecting part;
a large shell flange is arranged on the outer connecting part, a connecting part inner spigot is arranged in the large shell flange, a supporting part outer spigot is arranged at one end of the inner supporting part, the supporting part outer spigot penetrates into the connecting part inner spigot, and the other end of the inner supporting part is connected with the inside of the outer connecting part;
the large flange of the shell is connected with a driving motor.
Wherein, the inner part of the external connecting part is provided with an inner hole;
the two ends of the inner supporting part are respectively provided with a special-shaped large flange and an outer circle part, the outer side of the inner supporting part is provided with a reinforcing rib, the special-shaped large flange is provided with a special-shaped supporting part outer spigot,
the outer tang of supporting part with the tang cooperation is connected in the connecting portion, excircle portion passes the hole, the strengthening rib terminal surface of strengthening rib with the laminating of the hole terminal surface of hole, supporting part external screw thread and fastening nut cooperation in the excircle portion.
The end face of the large flange of the shell is provided with a flange threaded hole;
the flange inner spigot and the outer spigot of the driving motor are matched and positioned, and the motor threaded hole is connected with the mounting hole of the driving motor through a bolt.
The split type main speed reducer shell of the electric driving vehicle further comprises a middle sleeve;
round holes are formed in two side faces of the outer connecting part, a middle sleeve penetrates through the two round holes, and the middle sleeve is overlapped on the inner wall of the round holes;
the supporting rod penetrates through the middle sleeve, and two ends of the supporting rod are respectively connected with the left fixing support and the right fixing support;
the support threaded holes are formed in the end faces of the two sides of the outer connecting portion, and the left fixing support and the right fixing support are connected with the outer connecting portion through the support threaded holes.
An end cover threaded hole is formed in one end, far away from the large shell flange, of the outer connecting portion, and a main speed reducer end cover is installed on the outer connecting portion through the end cover threaded hole.
The half shaft bearing seat is characterized in that bearing seat connecting holes are respectively formed in the end faces of two sides of the outer connecting portion, bearing seat threaded holes are formed in the end faces of two sides of the outer connecting portion in a surrounding mode and are matched and positioned with the bearing seat connecting holes, and the half shaft bearing seat is connected with the outer connecting portion through the bearing seat threaded holes.
And a ventilation plug seat is arranged on the outer side of the outer connecting part close to the special-shaped large flange.
Wherein, the lower extreme of outer connecting portion is equipped with the oil drain cock seat.
The middle sleeve is connected with the inner wall of the round hole in a welding mode;
the outer seam allowance of the supporting part is connected with the inner seam allowance of the connecting part in a welding mode.
An automobile comprises the split type main speed reducer shell of the electric driving automobile.
The scheme of the invention at least comprises the following beneficial effects:
according to the scheme, the split type main speed reducer shell of the electric driving vehicle can support the main and driven gears, the differential mechanism and other parts in the main speed reducer, meets the original functions, and integrates the functions of direct connection with the driving motor and installation and fixation. The driving motor is rigidly connected with the main reducer assembly and integrated into a whole, the driving motor only needs to be connected and fixed with the main reducer shell and does not need to be separately fixed with a frame or a vehicle body, the arrangement space of the whole vehicle is reduced, transmission devices such as an intermediate transmission shaft and the like are reduced, the structure is compact, the assembly and disassembly are convenient, and the transmission efficiency is increased; the split type main reducer casing of the electric driving vehicle is of a split type structure, the outer connecting portion, the inner supporting portion and the middle sleeve are separately produced and machined, then the outer connecting portion, the inner supporting portion and the middle sleeve are integrally installed and welded, casting technology is simplified, casting difficulty caused by complex structure is reduced, production efficiency of the main reducer casing is improved, casting forming rate is improved, production cost is reduced, and casting defect risk is reduced.
Drawings
FIG. 1 is an exploded view of a split final drive housing of an electric drive vehicle according to the present invention;
FIG. 2 is an exploded view of the split final drive housing of the electric drive vehicle of the present invention;
FIG. 3 is an exploded view of the split final drive housing of the electric drive vehicle of the present invention;
FIG. 4 is a first schematic structural view of a split type final drive housing of the electric drive vehicle of the present invention;
FIG. 5 is a second schematic structural view of a split final drive housing of the electric drive vehicle of the present invention;
FIG. 6 is a cross-sectional view of the split final drive housing of the electric drive vehicle of the present invention;
FIG. 7 is a first schematic structural view of an external connection portion of a split type final drive housing of an electric drive vehicle according to the present invention;
FIG. 8 is a second schematic structural view of an external connection portion of the split type final drive housing of the electric drive vehicle of the present invention;
FIG. 9 is a first schematic structural view of the inner support portion of the split final drive housing of the electric drive vehicle of the present invention;
FIG. 10 is a second schematic structural view of the inner support portion of the split final drive housing of the electric drive vehicle of the present invention;
FIG. 11 is a schematic illustration of the construction of the intermediate sleeve of the split final drive housing of the electric drive vehicle of the present invention;
FIG. 12 is a schematic structural view of a fastening nut of the split final drive housing of the electric drive vehicle of the present invention;
FIG. 13 is a schematic view of the split type final drive housing and the left and right mounting brackets of the electric drive vehicle of the present invention.
FIG. 14 is a first schematic view of the assembly of the external components of the split type final drive housing of the electric drive vehicle of the present invention;
FIG. 15 is a second schematic view of the assembly of the external components of the split type final drive housing of the electric drive vehicle of the present invention.
Reference numerals:
1. an outer connecting portion; 11a, a large shell flange; 11b, a connecting part inner spigot; 11c, flange threaded holes; 12. an inner bore; 121. end surface of the inner hole; 13. a circular hole; 14. a bracket threaded hole; 15. end cover threaded holes; 16. a bearing seat connecting hole; 17. a bearing seat threaded hole; 18. a vent plug seat; 19. an oil drain plug seat; 2. an inner support portion; 21. a large special-shaped flange; 22. an outer circular portion; 23. an outer spigot of the support portion; 24. reinforcing ribs; 241. end faces of the reinforcing ribs; 25. a support portion external thread; 3. fastening a nut; 31. locking the internal thread of the nut; 4. an intermediate sleeve; 5. a support bar; 6. a left and a right fixed brackets; 7. a half shaft bearing seat; 8. the support rod is provided with a bolt; 9. a drive motor; 91. a drive motor mounting bolt; 10. a breather device; 11. end cover of main reducer.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in fig. 1 to 14, the present embodiment provides an electric drive vehicle split type final drive housing, which includes an outer connecting portion 1 and an inner supporting portion 2 installed inside the outer connecting portion 1; a large shell flange 11a is arranged on the outer connecting part 1, a connecting part inner spigot 11b is arranged in the large shell flange 11a, a supporting part outer spigot 23 is arranged at one end of the inner supporting part 2, the supporting part outer spigot 23 penetrates into the connecting part inner spigot 11b, and the other end of the inner supporting part 2 is connected with the inside of the outer connecting part 1; the large housing flange 11a is connected with the driving motor 9. The split type main reducer shell of the embodiment is mainly designed for electric driving, can support parts such as driving and driven gears and differentials in the main reducer, meets the original functions, and integrates the functions of direct connection with the driving motor 9 and fixation in installation. The structural design of the main reducer casing of this embodiment has integrated the installation of driving motor 9 with the main reducer assembly, when whole car was arranged, has reduced the axial and has arranged the space, and driving motor 9 accessible internal spline links to each other with main reducer driving gear off-axial spline, and direct drive main reducer assembly has reduced transmission such as intermediate drive shaft.
The main reducer casing of this embodiment both will satisfy the original function of supporting spare parts such as the inside active and passive gear of main reducer, differential mechanism, will integrate again and directly link to each other and install fixed function with driving motor 9, and consequently main reducer shell structure is comparatively complicated, and this embodiment adopts split type main reducer casing, through dividing into several parts to main reducer casing, including outer connecting portion 1 and interior supporting portion 2, every part is the production and processing alone, then the erection welding becomes integrative. The problems that the casting and forming of the integrated type are difficult, the complexity of the casting production process of the shell is high, the casting cost is high, the production efficiency is low, the forming rate of the cast sample piece is low, and the risk of casting defects is high are solved. The production efficiency of main reducer casing has been improved, has promoted the casting shaping rate, has reduced manufacturing cost, has reduced the casting defect risk.
In the driving process of the vehicle, the main speed reducer can receive torque transmitted by the driving motor 9 and transmit the torque to the half shafts through the half shaft gears at two ends of the main speed reducer, and in the torque transmission process, the shell of the main speed reducer can receive acting force of a force transmission part inside the main speed reducer and acting force generated by the shell of the driving motor 9 in the force transmission process and can receive vertical force generated by the gravity of the driving motor 9. The split type main reducer shell of the electric driving vehicle meets the requirement on the strength of the main reducer shell, the mounting structure of the main reducer shell is required to be considered, the strength of the main reducer shell is also considered, and the main reducer shell is subjected to structure optimization adjustment according to the stress conditions of different parts to reduce the stress of the shell.
The inner part of the outer connecting part 1 of the embodiment is provided with a connecting part inner spigot 11b and an inner hole 12; a shell large flange 11a is arranged on the outer connecting part 1, a connecting part inner spigot 11b is arranged in the shell large flange 11a, and a flange threaded hole 11c is arranged on the end face of the shell large flange 11 a; the inner spigot 11b of the connecting part is matched and positioned with the outer spigot of the driving motor 9, and the flange threaded hole 11c is connected with the mounting hole of the driving motor 9 through a driving motor mounting bolt 91. The inner support part 2 is provided with an outer round part 22, and the outer side of the inner support part 2 is provided with a support part outer spigot 23 and a reinforcing rib 24; the supporting part outer spigot 23 is matched and connected with the connecting part inner spigot 11b, and the supporting part outer spigot 23 is welded and connected with the connecting part inner spigot 11 b. Specifically, one end of the inner supporting portion 2, which is far away from the excircle portion 22, is provided with a special-shaped large flange 21, the outer side of the special-shaped large flange 21 is provided with a supporting portion outer spigot 23, the supporting portion outer spigot 23 and a connecting portion inner spigot 11b matched with the supporting portion outer spigot 23 are both special-shaped and belong to special-shaped spigots, and special-shaped matching structures of the supporting portion outer spigot 23 and the connecting portion inner spigot 11b are designed according to the actual shell appearance structure. The excircle portion 22 penetrates through the inner hole 12, the reinforcing rib end face 241 of the reinforcing rib 24 is attached to the inner hole end face 121 of the inner hole 12, and the supporting portion external thread 25 on the excircle portion 22 is matched with the fastening nut 3. Specifically, the support portion male screw 25 is screwed with the lock nut female screw 31 of the fastening nut 3.
The connection of outer connecting portion 1 and interior support portion 2 of this embodiment, with the interior support portion 2 outer tang wear into the outer connecting portion of outer connecting portion 1 in tang 11b, the circumferencial direction location prevents relative rotation between these 2 pieces of inner support portion 2 and outer connecting portion 1 is guaranteed in the cooperation of special-shaped tang. The outer circular portion 22 is inserted into the inner bore 12 to ensure concentricity of the two pieces of the outer connecting portion 1 and the inner supporting portion 2. The end face 241 of the rib abuts against the end face 121 of the inner hole to axially position the outer connecting portion 1 and the inner support portion 2, and position the outer connecting portion 1 and the inner support portion 2. The supporting part external thread 25 penetrating the excircle part 22 of the inner hole 12 is matched with the fastening nut 3, the supporting part outer spigot 23 is connected with the connecting part inner spigot 11b in a welding way, and the outer connecting part 1 and the inner supporting part 2 are connected by adopting welding seam welding. The inner support part 2 and the outer connecting part 1 are integrally connected by fastening a lock nut and welding a welding seam.
As shown in fig. 14-15, the electric driving vehicle of the present embodiment has the left and right fixing brackets 6, the driving motor 9, the axle bearing seat 7, the main reducer cover 10, the breather 10 and the drain plug mounted on the upper outer side of the split main reducer casing. The middle sleeve 4 on the outer connecting part 1 and the bracket threaded holes 14 on the two side end faces of the outer connecting part 1 are used for installing the left and right fixing brackets 6. And a connecting part inner spigot 11b and a flange threaded hole 11c on the outer connecting part 1 are used for installing the driving motor 9. And bearing seat connecting holes 16 and bearing seat threaded holes 17 on the outer connecting part 1 are used for installing the half shaft bearing seat 7. And an end cover threaded hole 15 on the external connecting part 1 is used for installing the main speed reducer end cover 10. And a vent plug seat 18 and an oil drain plug seat 19 on the external connecting part 1 are respectively used for installing the vent device 10 and the oil drain plug. The main reducer driving and driven gear, the differential assembly and other internal parts are mounted inside the main reducer shell through bearings and fastened through bolts. The specific structure is as follows:
as shown in fig. 13, round holes 13 are formed on two side surfaces of the external connection portion 1 of the present embodiment, the intermediate sleeve 4 passes through the two round holes 13, the intermediate sleeve 4 is lapped on the inner walls of the round holes 13, and the intermediate sleeve 4 is welded to the inner walls of the round holes 13; the supporting rod 5 penetrates through the middle sleeve 4, and two ends of the supporting rod 5 are respectively connected with a left fixing bracket 6 and a right fixing bracket 6; specifically, the support rod 5 passes through the middle sleeve 4, and the two ends of the support rod 5 are respectively connected with the left and right fixing brackets 6, wherein the support rod 5 is added between the left and right fixing brackets 6 for reinforcing the left and right fixing brackets 6. The support threaded holes 14 are formed in the end faces of the two sides of the outer connecting portion 1, the left fixing support 6 and the right fixing support 6 are connected with the outer connecting portion 1 through the support threaded holes 14, and the support rod mounting bolts 8 are specifically adopted for connection.
The end face of the large shell flange 11a of the embodiment is provided with a flange threaded hole 11 c; the inner spigot 11b of the connecting part is matched and positioned with the outer spigot of the driving motor 9, the flange threaded hole 11c is connected with the mounting hole of the driving motor 9 through a driving motor mounting bolt 91, and the driving motor 9 and the main reducer shell are mounted into a whole.
The bearing seat connecting holes 16 are respectively formed in the end faces of the two sides of the outer connecting portion 1, bearing seat threaded holes 17 are formed in the end faces of the two sides of the outer connecting portion 1 around the bearing seat connecting holes 16, the spigot of the half shaft bearing seat 7 is matched and positioned with the bearing seat connecting holes 16, the half shaft bearing seat 7 is connected with the outer connecting portion 1 through the bearing seat threaded holes 17, and the half shaft bearing seat 7 is installed on the outer connecting portion 1.
An end cover threaded hole 15 is formed in one end, far away from the large housing flange 11a, of the outer connecting portion 1 of the present embodiment, and the final drive end cover 10 is mounted on the outer connecting portion 1 through the end cover threaded hole 15.
The outer connecting part 1 of the present embodiment is provided with a vent plug seat 18 on the outer side near the large irregular flange 21, and specifically, the vent plug seat 18 is provided below the outer connecting part 1 for installing the vent device 10. The lower end of the external connecting part 1 is provided with an oil drain plug seat 19 for installing an oil drain plug.
The split type main reducer shell of the electric driving vehicle can support parts such as a driving gear, a driven gear and a differential mechanism inside the main reducer, meets the original functions, and integrates the functions of direct connection with a driving motor 9 and installation fixation. The driving motor 9 is rigidly connected with the main reducer assembly and integrated into a whole, the driving motor 9 only needs to be connected and fixed with the main reducer shell and does not need to be separately fixed with a frame or a vehicle body, the arrangement space of the whole vehicle is reduced, transmission devices such as an intermediate transmission shaft and the like are reduced, the structure is compact, the assembly and disassembly are convenient, and the transmission efficiency is increased; the split type main reducer casing of the electric driving vehicle is of a split type structure, the outer connecting portion 1, the inner supporting portion 2 and the middle sleeve 4 are separately produced and machined, then are installed and welded into a whole, casting technology is simplified, casting difficulty caused by complex structure is reduced, production efficiency of the main reducer casing is improved, casting forming rate is improved, production cost is reduced, and casting defect risk is reduced.
An automobile comprises the split type main speed reducer shell of the electric driving automobile.
The electric drive vehicle split type main speed reducer shell is arranged on the vehicle body, the whole vehicle arrangement space of the speed reducer and the drive motor is reduced, the electric drive vehicle split type main speed reducer shell is convenient to disassemble and assemble, the production efficiency of the vehicle is improved, and the cost is reduced.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. The split type main speed reducer shell of the electric driving vehicle is characterized by comprising an outer connecting part and an inner supporting part arranged inside the outer connecting part;
a large shell flange is arranged on the outer connecting part, a connecting part inner spigot is arranged in the large shell flange, a supporting part outer spigot is arranged at one end of the inner supporting part, the supporting part outer spigot penetrates into the connecting part inner spigot, and the other end of the inner supporting part is connected with the inside of the outer connecting part;
the large flange of the shell is connected with a driving motor.
2. The split final drive housing of the electric drive vehicle of claim 1, wherein the outer connecting portion has an internal bore therein;
the two ends of the inner supporting part are respectively provided with a special-shaped large flange and an outer circle part, the outer side of the inner supporting part is provided with a reinforcing rib, the special-shaped large flange is provided with a special-shaped supporting part outer spigot,
the outer tang of supporting part with the tang cooperation is connected in the connecting portion, excircle portion passes the hole, the strengthening rib terminal surface of strengthening rib with the laminating of the hole terminal surface of hole, supporting part external screw thread and fastening nut cooperation in the excircle portion.
3. The split type final drive shell of the electric vehicle according to claim 2, wherein a flange threaded hole is formed in the end face of a large flange of the shell;
the flange threaded hole is connected with the mounting hole of the driving motor through a driving motor mounting bolt.
4. The electric drive vehicle split final drive housing of claim 3, further comprising an intermediate sleeve;
round holes are formed in two side faces of the outer connecting part, a middle sleeve penetrates through the two round holes, and the middle sleeve is overlapped on the inner wall of the round holes;
the supporting rod penetrates through the middle sleeve, and two ends of the supporting rod are respectively connected with the left fixing support and the right fixing support;
the support threaded holes are formed in the end faces of the two sides of the outer connecting portion, and the left fixing support and the right fixing support are connected with the outer connecting portion through the support threaded holes.
5. The split final drive housing for an electric vehicle according to claim 4, wherein an end cap screw hole is provided at an end of the outer connecting portion remote from the large housing flange, and a final drive end cap is mounted on the outer connecting portion through the end cap screw hole.
6. The split type main speed reducer casing of the electric driving vehicle as claimed in claim 5, wherein bearing seat connecting holes are respectively formed in both side end faces of the outer connecting portion, bearing seat threaded holes are formed in both side end faces of the outer connecting portion around the bearing seat connecting holes, the half axle bearing seats are positioned in cooperation with the bearing seat connecting holes, and the half axle bearing seats are connected with the outer connecting portion through the bearing seat threaded holes.
7. The split type final drive housing of the electric drive vehicle according to claim 6, wherein a breather plug seat is provided on an outer side of the outer connecting portion adjacent to the large shaped flange.
8. The split final drive housing of the electric drive vehicle as defined in claim 7, wherein a drain plug seat is provided on a lower end of the outer connecting portion.
9. The split type final drive housing for the electric vehicle according to claim 8, wherein the intermediate sleeve is welded to an inner wall of the circular hole;
the outer seam allowance of the supporting part is connected with the inner seam allowance of the connecting part in a welding mode.
10. An electric vehicle comprising a split final drive housing according to any of claims 1 to 9.
CN202010086260.0A 2020-02-11 2020-02-11 Split type main reducer casing of electricity driving vehicle and car Pending CN111140643A (en)

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US20220412448A1 (en) * 2018-07-24 2022-12-29 Sew-Eurodrive Gmbh & Co. Kg Geared motor

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CN207634644U (en) * 2017-12-12 2018-07-20 南京创捷和信汽车零部件有限公司 A kind of main reducing gear band differential assembly for independent suspension
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CN209488336U (en) * 2019-03-15 2019-10-11 浙江方正电机股份有限公司 A kind of shell of integrated form driving electric bridge
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Publication number Priority date Publication date Assignee Title
CN203126506U (en) * 2013-03-28 2013-08-14 同济大学 Integrated single swing arm suspension conical-cylindrical gear speed reduction hub drive system
CN206436808U (en) * 2016-12-28 2017-08-25 郑州日产汽车有限公司 Collect the motor rear axle assy integrated with transmission system
CN207634644U (en) * 2017-12-12 2018-07-20 南京创捷和信汽车零部件有限公司 A kind of main reducing gear band differential assembly for independent suspension
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Publication number Priority date Publication date Assignee Title
US20220412448A1 (en) * 2018-07-24 2022-12-29 Sew-Eurodrive Gmbh & Co. Kg Geared motor
US11732793B2 (en) * 2018-07-24 2023-08-22 Sew-Eurodrive Gmbh & Co. Kg Geared motor

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