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CN116833364A - Processing method of planet carrier, planet carrier and electronic parking system - Google Patents

Processing method of planet carrier, planet carrier and electronic parking system Download PDF

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Publication number
CN116833364A
CN116833364A CN202310666382.0A CN202310666382A CN116833364A CN 116833364 A CN116833364 A CN 116833364A CN 202310666382 A CN202310666382 A CN 202310666382A CN 116833364 A CN116833364 A CN 116833364A
Authority
CN
China
Prior art keywords
planet carrier
wheel
output shaft
parking system
electronic parking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310666382.0A
Other languages
Chinese (zh)
Inventor
杨沈军
张澍
刘畅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wanxiang Qianchao Shanghai Automotive Systems Co ltd
Original Assignee
Wanxiang Qianchao Shanghai Automotive Systems Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wanxiang Qianchao Shanghai Automotive Systems Co ltd filed Critical Wanxiang Qianchao Shanghai Automotive Systems Co ltd
Priority to CN202310666382.0A priority Critical patent/CN116833364A/en
Publication of CN116833364A publication Critical patent/CN116833364A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/746—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive and mechanical transmission of the braking action
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/28—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in one step
    • C23C8/30—Carbo-nitriding
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/40—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions
    • C23C8/52—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions more than one element being applied in one step
    • C23C8/54—Carbo-nitriding
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/60—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes
    • C23C8/72—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes more than one element being applied in one step
    • C23C8/74—Carbo-nitriding
    • 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
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • F16H57/082—Planet carriers
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • F16H63/345—Parking lock mechanisms or brakes in the transmission using friction brakes, e.g. a band brakes
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • F16H63/3458—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire
    • F16H63/3466—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire using electric motors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Transportation (AREA)
  • Retarders (AREA)

Abstract

The invention discloses a processing method of a planet carrier, the planet carrier and an electronic parking system, wherein the processing method of the planet carrier comprises the following steps: step S1: providing a blank, and performing cold extrusion on the blank to obtain a flange plate and an output shaft which are integrally connected; step S2: machining one or more pin holes in the flange plate; step S3: and providing a plurality of positioning pins, and respectively pressing the positioning pins into the pin holes to form the planet carrier, wherein the positioning pins and the pin holes are in interference fit. The invention adopts a cold extrusion process to finish the integrated forming of the planet carrier disc surface and the spline, and can adapt to larger parking force and clamping force. The invention has simple structure and convenient heat treatment, and can realize large-scale mass production.

Description

Processing method of planet carrier, planet carrier and electronic parking system
Technical Field
The invention relates to the technical field of planetary carriers, in particular to a processing method of a planetary carrier and an electronic parking system.
Background
In a conventional planetary gear speed reducing mechanism for electronic parking, a planetary carrier of the planetary gear speed reducing mechanism is usually in an injection molding or powder metallurgy structure.
The injection molding planet carrier (shown in figure 1) has the advantages of light weight, high torsion resistance and long durability due to the fact that the spline is subjected to cold forging; the plastic has the defects that the overall strength of the disc surface is low, 4 planetary gear structures are mostly adopted for distributing torque, meanwhile, the strength of the plastic is low, and the plastic is easy to crack and lose efficacy under high torque extrusion.
The powder metallurgy planet carrier (shown in figure 2) has higher disc surface strength and heavier weight, but is limited by materials, so that spline torque is smaller and is easy to break under large torque.
With the rise of new energy automobiles, passenger automobiles with long-duration large bodies need larger parking force, and the large passenger automobiles may require clamping force reaching 30 KN. In the face of such a large clamping force, both of the above-mentioned carriers have insufficient strength, and there is a risk of cracking of the disc face or breakage of the spline.
Disclosure of Invention
In view of the above, the present invention is directed to a method for manufacturing a planetary carrier, and an electronic parking system.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a method of manufacturing a planet carrier, comprising:
step S1: providing a blank, and performing cold extrusion on the blank to obtain a flange plate and an output shaft which are integrally connected;
step S2: machining one or more pin holes in the flange plate;
step S3: and providing a plurality of positioning pins, and respectively pressing the positioning pins into the pin holes to form the planet carrier, wherein the positioning pins and the pin holes are in interference fit.
In the above processing method of a planet carrier, in step S1, an outer surface of the output shaft is in a spline structure.
In the above processing method of the planet carrier, in the steps S2 to S3, the positioning pin is mounted on a surface of the flange plate opposite to the output shaft.
In the above processing method of the planet carrier, in step S3, a portion of the positioning pin protrudes from a surface of the flange plate for installing the planet gear.
According to the processing method of the planet carrier, the output shaft, the flange plate and the locating pin are all made of manganese-chromium alloy steel materials and are processed in a carbonitriding heat treatment mode.
The planet carrier is obtained by the processing method of the planet carrier.
The utility model provides an electron parking system which characterized in that includes above-mentioned planet carrier, still includes:
a motor;
the driving wheel is arranged on an output shaft of the motor;
the middle wheel is in transmission connection with the driving wheel;
the positioning shaft is fixedly arranged, and the intermediate wheel is arranged on the positioning shaft;
the input wheel is in transmission connection with the middle wheel;
the planetary gear is arranged on the locating pin and is connected with the input wheel;
the adjusting assembly is connected with the output shaft of the planet carrier.
The electronic parking system described above, wherein further includes:
a housing;
the end cover and the shell surround to form a containing space, and the motor, the driving wheel, the intermediate wheel, the input wheel, the planet wheel and the adjusting component are all installed in the containing space.
The electronic parking system described above, wherein further includes: the planetary gear comprises a piston and a friction plate, wherein one end of the piston is connected with one end of the adjusting assembly, which is opposite to the planet carrier, and the other end of the piston is connected with the friction plate.
The electronic parking system described above, wherein further includes: the support is arranged in the accommodating space and supports the motor.
The invention adopts the technology, so that compared with the prior art, the invention has the positive effects that:
(1) The invention adopts a cold extrusion process to finish the integrated forming of the planet carrier disc surface and the spline, and can adapt to larger parking force and clamping force.
(2) The invention has simple structure and convenient heat treatment, and can realize large-scale mass production.
Drawings
Fig. 1 is a schematic view of an injection molded planet carrier.
Fig. 2 is a schematic view of a powder metallurgy planet carrier.
Fig. 3 is a schematic cross-sectional view of a planet carrier portion within a housing of the present invention.
Fig. 4 is a schematic view of the planet carrier of the present invention.
Fig. 5 is an exploded schematic view of the planet carrier of the present invention.
Fig. 6 is a schematic view of the electronic parking system of the present invention.
In the accompanying drawings: 1. a housing; 2. an end cap; 3. a bracket; 4. a driving wheel; 5. an intermediate wheel; 6. positioning a shaft; 7. an input wheel; 8. a planet wheel; 9. a planet carrier; 10. an adjustment assembly; 11. a friction plate; 12. a piston; 13. a motor; 91. a flange plate; 92. an output shaft; 93. a positioning pin; 94. pin holes.
Detailed Description
The invention is further illustrated, but not limited to, by the following description of the drawings and specific embodiments, wherein FIG. 4 is a schematic diagram of a planet carrier of the present invention; fig. 5 is an exploded view of the planet carrier of the present invention, and referring to fig. 4 to 5, a method for manufacturing the planet carrier according to a preferred embodiment includes:
step S1: providing a blank, and performing cold extrusion on the blank to obtain a flange 91 and an output shaft 92 which are integrally connected;
step S2: one or more pin holes 94 are machined in the flange 91;
step S3: a plurality of positioning pins 93 are provided, and the positioning pins 93 are respectively pressed into the pin holes 94 to form the planet carrier 9, wherein the positioning pins 93 and the pin holes 94 are in interference fit.
Further, the number of the pin holes 94 is three, and the three pin holes 94 are arranged in a collar-like array with the axis of the flange 91.
Further, the steps related to the cold pressing process include:
step L1: adjusting the blank, and extruding the blank to a set size range by adopting means of grinding, sawing, cutting or extruding;
step L2: and (5) placing the blank into a cold pressing die for cold pressing.
After the cold extrusion is completed, a structure with a flange plate 91 and an output shaft 92 is obtained
Further, the cold-extruded blank is taken out after step L2, and the flange 91 is processed to ensure perpendicularity between the disk surface of the flange 91 and the spline structure of the outer surface of the output shaft 92.
Further, in step S2, a plurality of pin holes 94 are formed by machining using a pin hole machining center, the positional degree of the spline structure of the pin holes 94 and the outer surface of the output shaft 92 is ensured, and carbonitriding treatment is performed on the pin holes 94.
Further, in step S3, the positioning pin 93 is pressed into the pin hole 94 with the output shaft 92 positioned.
In a preferred embodiment, in step S1, the outer surface of the output shaft 92 is of a spline configuration.
Further, the splined outer surface of the output shaft 92 may provide increased engagement with the adjustment assembly 10.
In a preferred embodiment, in steps S2-S3, the locating pin 93 is mounted on the face of the flange 91 opposite the output shaft 92.
In a preferred embodiment, in step S3, a portion of the positioning pin 93 protrudes from the surface of the flange 91 for mounting the planet 8.
The foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the embodiments and the protection scope of the present invention.
The present invention has the following embodiments based on the above description:
in a further embodiment of the present invention, the output shaft 92, the flange 91 and the positioning pin 93 are made of manganese-chromium alloy steel materials and are processed by carbonitriding.
Further, a planetary carrier 9 of the preferred embodiment is shown, which planetary carrier 9 is obtained by the above-described processing method of the planetary carrier 9.
In a preferred embodiment, the planet carrier 9 produced by the method is applied to an EMB wire-controlled electromechanical brake, and has the advantages of high torque, long service life and high environmental adaptability.
In a preferred embodiment, the method adopts a cold extrusion process to finish the integral molding of the flange plate 91 and the output shaft 92, the positioning pin 93 is used as an interference press fit of the planetary shaft and the flange plate 91, the positioning pin 93 and the flange plate 91 are made of manganese-chromium alloy steel materials, a carbonitriding heat treatment mode is adopted, the rigidity of the output shaft 92 of the planetary support 9 is improved due to the high surface hardness, and the fatigue life is greatly prolonged due to the low-hardness toughness of the core part; tests prove that the requirements can be met in a 30KN clamping force endurance test; meanwhile, in the wire-controlled electromechanical brake, a large braking force needs to be provided, and the requirements of thermal deformation and durability for millions of cycles are met, so that the planetary carrier 9 can also meet the requirements.
FIG. 3 is a schematic cross-sectional view of a planet carrier portion within a housing of the present invention; fig. 6 is a schematic view of the electronic parking system of the present invention, referring to fig. 3 and 6, showing an electronic parking system of a preferred embodiment, wherein the electronic parking system includes the above planetary carrier 9, and further includes: the device comprises a motor 13, a driving wheel 4, an intermediate wheel 5, a positioning shaft 6, an input wheel 7, a planetary wheel 8 and an adjusting assembly 10, wherein the driving wheel 4 is arranged on an output shaft of the motor 13; the middle wheel 5 is in transmission connection with the driving wheel 4; the positioning shaft 6 is fixedly arranged, and the intermediate wheel 5 is arranged on the positioning shaft 6; the method comprises the steps of carrying out a first treatment on the surface of the The input wheel 7 is in transmission connection with the intermediate wheel 5; the planet wheel 8 is arranged on the positioning pin 93, and the planet wheel 8 is connected with the input wheel 7; the adjustment assembly 10 is connected to the output shaft 92 of the planet carrier 9.
Further, the planet carrier 9 directly outputs torque and drives the adjusting component 10 of the caliper mechanism to axially move, belongs to a component for amplifying the torque, and has high requirements on low-speed heavy load and torque fatigue.
The injection molded planet carrier shown in fig. 1 is subject to fatigue deformation at the joint with the output shaft insert due to reduced tensile strength and bending strength of the material at high temperature of 120 ℃ during heavy load, and causes loose cracking, and further spreads into disk surface cracking.
The powder metallurgy planet carrier shown in fig. 2 is mainly characterized by the characteristics of materials, so that the core part has no toughness after heat treatment, lacks creep resistance and is easy to break in stress fatigue at the transition sections of the disc surface and the spline under fatigue heavy load
The cold extrusion planetary carrier 9 of the present technique shown in fig. 4 is not affected by temperature and strength, and the heat treatment carbonitriding can well secure surface and core hardness, so that it has great tensile and bending strength while maintaining very good toughness. The problems of disc surface cracking and spline cracking can not occur.
In a preferred embodiment, further comprising: the motor 13, the driving wheel 4, the intermediate wheel 5, the input wheel 7, the planet wheel 8 and the adjusting component 10 are all installed in the accommodating space.
In a preferred embodiment, further comprising: the piston 12 and the friction plate 11, one end of the piston 12 is connected with one end of the adjusting assembly 10 opposite to the planet carrier 9, and the other end of the piston 12 is connected with the friction plate 11.
The foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the embodiments and the protection scope of the present invention.
The present invention has the following embodiments based on the above description:
in a further embodiment of the present invention, further comprising: and the bracket 3 is arranged in the accommodating space, and the bracket 3 supports the motor 13.
The foregoing is merely illustrative of the preferred embodiments of the present invention and is not intended to limit the embodiments and scope of the present invention, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included in the scope of the present invention.

Claims (10)

1. A method of manufacturing a planet carrier, comprising:
step S1: providing a blank, and performing cold extrusion on the blank to obtain a flange plate and an output shaft which are integrally connected;
step S2: machining one or more pin holes in the flange plate;
step S3: and providing a plurality of positioning pins, and respectively pressing the positioning pins into the pin holes to form the planet carrier, wherein the positioning pins and the pin holes are in interference fit.
2. The method of claim 1, wherein in step S1, the outer surface of the output shaft has a spline structure.
3. The method of claim 1, wherein in steps S2 to S3, the positioning pins are mounted on a surface of the flange plate opposite to the output shaft.
4. The method of claim 1, wherein in step S3, a portion of the positioning pin protrudes from a surface of the flange plate for mounting a planetary gear.
5. The method of claim 1, wherein the output shaft, the flange, and the locating pin are each made of manganese-chromium alloy steel and are each made of a carbonitriding heat treatment.
6. A planet carrier obtained by the method of processing a planet carrier according to any one of claims 1 to 5.
7. An electronic parking system comprising the planetary carrier of claim 6, further comprising:
a motor;
the driving wheel is arranged on an output shaft of the motor;
the middle wheel is in transmission connection with the driving wheel;
the positioning shaft is fixedly arranged, and the intermediate wheel is arranged on the positioning shaft;
the input wheel is in transmission connection with the middle wheel;
the planetary gear is arranged on the locating pin and is connected with the input wheel;
the adjusting assembly is connected with the output shaft of the planet carrier.
8. The electronic parking system as set forth in claim 7, further comprising:
a housing;
the end cover and the shell surround to form a containing space, and the motor, the driving wheel, the intermediate wheel, the input wheel, the planet wheel and the adjusting component are all installed in the containing space.
9. The electronic parking system as set forth in claim 8, further comprising: the planetary gear comprises a piston and a friction plate, wherein one end of the piston is connected with one end of the adjusting assembly, which is opposite to the planet carrier, and the other end of the piston is connected with the friction plate.
10. The electronic parking system as set forth in claim 9, further comprising: the support is arranged in the accommodating space and supports the motor.
CN202310666382.0A 2023-06-07 2023-06-07 Processing method of planet carrier, planet carrier and electronic parking system Pending CN116833364A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310666382.0A CN116833364A (en) 2023-06-07 2023-06-07 Processing method of planet carrier, planet carrier and electronic parking system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310666382.0A CN116833364A (en) 2023-06-07 2023-06-07 Processing method of planet carrier, planet carrier and electronic parking system

Publications (1)

Publication Number Publication Date
CN116833364A true CN116833364A (en) 2023-10-03

Family

ID=88173435

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310666382.0A Pending CN116833364A (en) 2023-06-07 2023-06-07 Processing method of planet carrier, planet carrier and electronic parking system

Country Status (1)

Country Link
CN (1) CN116833364A (en)

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