CN110894871A - Gear shifting mechanism of integrated electrically-driven bridge speed reducer with differential structure - Google Patents
Gear shifting mechanism of integrated electrically-driven bridge speed reducer with differential structure Download PDFInfo
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- CN110894871A CN110894871A CN201911295192.2A CN201911295192A CN110894871A CN 110894871 A CN110894871 A CN 110894871A CN 201911295192 A CN201911295192 A CN 201911295192A CN 110894871 A CN110894871 A CN 110894871A
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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
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/30—Toothed gearings for conveying rotary motion with gears having orbital motion in which an orbital gear has an axis crossing the main axes of the gearing and has helical teeth or is a worm
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Abstract
The invention discloses a gear shifting mechanism of an integrated electrically-driven bridge speed reducer with a differential structure, belonging to the technical field of speed reducers and comprising: a reducer assembly and a differential assembly; the reduction gear assembly includes: the tail end of the input shaft is connected with a left bevel gear of the speed reducer; the front end of the output shaft is connected with a right bevel gear of the speed reducer; the right inner shell of the speed reducer is sleeved on the output shaft and is rotationally connected with the output shaft, the excircle of the right inner shell of the speed reducer is provided with a cylindrical gear, and a planetary bevel gear of the speed reducer is arranged on the right inner shell of the speed reducer and is rotationally connected with the right inner shell of the speed reducer; the toothholder cover is established on the output shaft, and toothholder and reduction gear right side inner shell fixed connection when moving left, and toothholder and reduction gear outer shell fixed connection when moving right. The invention has the advantages of compact integral structure, high integration level, strong reliability, low processing difficulty and light weight.
Description
Technical Field
The invention relates to the technical field of speed reducers, in particular to a gear shifting mechanism of an integrated electrically-driven bridge speed reducer with a differential structure.
Background
The main reducer assembly is the core part of the drive axle, is positioned at the tail end of a power transmission system, and has the basic functions of increasing the torque transmitted by a transmission shaft or a speed changer, reducing the transmitted rotating speed and reasonably distributing the power to a left driving wheel and a right driving wheel.
Chinese patent CN201811586036.7 discloses a vertical coaxial shiftable electric drive axle reduction gearbox assembly, as shown in fig. 1 and 2, comprising a motor, an axle assembly 1, an intermediate axle assembly 2, a main cone axle assembly 3 and a differential assembly 4, wherein the intermediate axle assembly 2 comprises an intermediate axle 15, an intermediate axle normally meshed gear 12 and an intermediate axle low-speed gear 13, and the intermediate axle normally meshed gear 12 and the intermediate axle low-speed gear 13 are respectively sleeved on the intermediate axle 15 in an interference manner.
The main bevel shaft assembly 3 comprises a driving bevel gear 10, a main bevel shaft low-gear 14 and a fixed gear seat 9, the main bevel shaft low-gear 14 is connected with the driving bevel gear 10 through a needle bearing, the fixed gear seat 9 is fixed on the driving bevel gear 10, the differential mechanism assembly 4 comprises a driven bevel gear 11, a motor is connected with a shaft assembly 1, the shaft assembly 1 is meshed with a shaft assembly 2 through a middle shaft constant-meshing gear 12, and a middle shaft low-gear 13 of the shaft assembly 2 is meshed with the main bevel shaft low-gear 14 of the main bevel shaft assembly 3.
The main cone shaft assembly 3 is connected with the first shaft assembly 1 through a sliding meshing sleeve 8, the main cone shaft assembly 3 is coaxial with the first shaft assembly 1, a driving bevel gear 10 of the main cone shaft assembly 3 is meshed with a driven bevel gear 11 of the differential assembly 4, and a differential gear 5 of the differential assembly 4 is connected with a wheel end half shaft.
The transmission mechanism further comprises a transmission case 6 and a speed reducer case 7, the transmission case 6 is connected with the speed reducer case 7 through bolts, the intermediate shaft assembly 2 is supported on the transmission case 6 through conical bearings on two sides, the main conical shaft assembly 3 is fixed on the speed reducer case 7 through the conical bearings, the differential assembly 4 is fixed on the speed reducer case 7 through the conical bearings, and the 7-shaft assembly 1 is connected with the transmission case 6 through the bearings.
The longitudinally-arranged coaxial type shiftable electric drive axle reduction box assembly is large in size, complex in structure, heavy in weight and low in integration level; the Grarison bevel gear is complex to manufacture and process, the processing precision is difficult to guarantee, and the cost is high.
Disclosure of Invention
The invention aims to overcome the defects of large volume, complex structure, heavy weight and low integration level of a vertical coaxial type shiftable electric drive axle reduction box assembly in the background art, and provides a gear shifting mechanism of an integrated electric drive axle reducer with a differential structure.
The invention provides a gear shifting mechanism of an integrated electrically-driven bridge speed reducer with a differential structure, which comprises: a reducer assembly and a differential assembly;
the reduction gear assembly includes: the speed reducer comprises a speed reducer shell, a speed reducer body and a control device, wherein the speed reducer shell is used for supporting an input shaft and an output shaft which are arranged in the speed reducer shell and are rotationally connected with the speed reducer shell;
the front end of the input shaft is used for being connected with external power, and the tail end of the input shaft is connected with a left bevel gear of a speed reducer;
the axes of the output shaft and the input shaft are collinear, and the front end of the output shaft is connected with a right bevel gear of the speed reducer;
the right inner shell of the speed reducer is sleeved on the output shaft and is rotationally connected with the output shaft, a cylindrical gear is arranged on the outer circle of the right inner shell of the speed reducer, and the cylindrical gear of the right inner shell of the speed reducer is used for driving the differential assembly to run;
the input shaft drives the output shaft or the right inner shell of the speed reducer to rotate through the planetary bevel gear of the speed reducer;
the tooth holder is sleeved on the output shaft and rotates synchronously with the output shaft, the tooth holder moves left and right on the output shaft, the tooth holder is fixedly connected with the inner shell on the right side of the speed reducer when moving left, and the tooth holder is fixedly connected with the outer shell of the speed reducer when moving right.
The preferred scheme is as follows: the reducer shell comprises a left reducer shell, a right reducer shell and a right reducer shell, the left reducer shell and the right reducer shell are buckled to form a cavity structure, the left reducer shell and the right reducer shell are connected in a detachable and sealed mode through bolts, and the middle reducer shell is connected with the left reducer shell and the right reducer shell through bolts.
The preferred scheme is as follows: the end of input shaft and reduction gear left side bevel gear interference connection, the cover is equipped with reduction gear left side inner shell on the reduction gear left side bevel gear, reduction gear left side inner shell and reduction gear right side inner shell fixed connection, form the cavity that is used for installing reduction gear left side bevel gear, reduction gear right side bevel gear and reduction gear planetary bevel gear between reduction gear left side inner shell and the reduction gear right side inner shell, be connected through tapered roller bearing cooperation between reduction gear left side inner shell and the reduction gear shell, be connected through the needle bearing cooperation between reduction gear left side inner shell and the reduction gear left side bevel gear.
The preferred scheme is as follows: the front end of the output shaft is in interference connection with the right bevel gear of the speed reducer, the right inner shell of the speed reducer is sleeved on the right bevel gear of the speed reducer, the right inner shell of the speed reducer is in fit connection with the outer shell of the speed reducer through a tapered roller bearing, and the right inner shell of the speed reducer is in fit connection with the right bevel gear of the speed reducer through a needle bearing.
The preferred scheme is as follows: the two speed reducer planetary bevel gears are arranged on the inner shell on the right side of the speed reducer, the axes of the two speed reducer planetary bevel gears are collinear and are mutually vertical to the axes of the output shaft and the input shaft, the two speed reducer planetary bevel gears are symmetrically arranged on the two sides of the output shaft and the input shaft, and the two speed reducer planetary bevel gears and the inner shell on the right side of the speed reducer are connected in a matched mode through spherical needle roller bearings.
The preferred scheme is as follows: the tail end of the output shaft is provided with a spline groove along the circumference of the output shaft, the length direction of the spline groove is parallel to the axis of the output shaft, the inner circle of the tooth holder is provided with a spline which is in fit connection with the spline groove, the tooth holder moves linearly left and right on the output shaft along the length direction of the output shaft, the tooth holder is provided with a sliding meshing sleeve which drives the tooth holder to move linearly left and right on the output shaft, the sliding meshing sleeve is rotationally connected with the tooth holder, and the tooth holder is provided with a boss which limits the sliding meshing sleeve to move left and right on the tooth holder.
The preferred scheme is as follows: the utility model discloses a speed reducer, including reduction gear, toothholder, spline connection, spline housing, end cover, spline shaft, end cover, gear seat and reduction gear right side inner shell, the toothholder passes through splined connection with reduction gear right side inner shell, the left end of toothholder is equipped with the spline housing of being connected with reduction gear right side inner shell, the right-hand member of reduction gear right side inner shell is equipped with the integral key shaft that the toothholder is connected, the spline shaft of toothholder is connected with the spline housing plug of end cover, the end cover seals on reduction gear, the end cover passes through bolted connection with reduction gear.
The preferred scheme is as follows: the differential assembly includes: the differential mechanism left shell and the differential mechanism right shell are positioned in the speed reducer shell and are in rotary connection with the speed reducer shell, the axes of the differential mechanism left shell and the differential mechanism right shell are collinear, and a cavity for mounting a differential mechanism left bevel gear, a differential mechanism right bevel gear and a differential mechanism bevel gear is formed between the differential mechanism left shell and the differential mechanism right shell;
the differential mechanism comprises a differential mechanism left side bevel gear and a differential mechanism right side bevel gear, wherein the differential mechanism left side bevel gear is rotationally connected with a differential mechanism left shell, the differential mechanism right side bevel gear is rotationally connected with a differential mechanism right shell, and the axes of the differential mechanism left side bevel gear and the differential mechanism right side bevel gear are collinear;
the two differential bevel gears are meshed and connected between a differential left side bevel gear and a differential right side bevel gear, the axes of the two differential bevel gears are collinear and are mutually vertical to the axes of the differential left side bevel gear and the differential right side bevel gear, and the differential left side bevel gear and the differential right side bevel gear are in transmission connection through the differential bevel gears;
the driven cylindrical gear is respectively collinear with the axes of the left differential case and the right differential case, the driven cylindrical gear is fixedly connected with the left differential case and the right differential case through bolts, and the driven cylindrical gear is meshed with the cylindrical gear of the inner case on the right side of the speed reducer.
The preferred scheme is as follows: the differential mechanism left side shell is connected with the speed reducer shell in a matched mode through a tapered roller bearing, the differential mechanism left side bevel gear is connected with the differential mechanism left side shell in a matched mode through a needle bearing, the differential mechanism right side shell is connected with the speed reducer shell in a matched mode through a tapered roller bearing, the differential mechanism right side bevel gear is connected with the differential mechanism right side shell in a matched mode through a needle bearing, the differential mechanism bevel gear is connected with the differential mechanism left side shell in a rotating mode, and the differential mechanism bevel gear is connected with the differential mechanism left side shell in a matched mode through a.
The preferred scheme is as follows: the output shaft of the motor is in transmission connection with the front end of the input shaft.
On the basis of the technical scheme, compared with the prior art, the invention has the following advantages:
the invention discloses a gear shifting mechanism of an integrated electrically-driven axle speed reducer with a differential structure, which integrates a speed reducer assembly and a differential assembly, wherein the speed reducer assembly and the differential assembly are integrated into an integral structure, the speed reducer assembly can realize two gears of a high gear and a low gear and can realize gear shifting of speed ratios 1 and 2, and the speed reducer assembly is arranged by referring to a gear shifting mechanism structure of a rear auxiliary box of a gearbox. The parts of the speed reducer assembly can be used as the parts of the gear shifting mechanism of the rear auxiliary box of the existing gearbox. This reduction gear assembly shifts at realization high-speed and low-speed, when keeping off at a high speed: the sliding meshing sleeve slides leftwards, the tooth holder is in splined connection with the inner shell on the right side of the speed reducer, so that the output shaft is fixed with the inner shell on the right side of the speed reducer, and the output rotating speed and the output torque of the inner shell on the right side of the speed reducer are consistent with those of the input shaft; at low gear: the sliding meshing sleeve slides rightwards, the tooth holder is connected with the end cover through a spline, therefore, the output shaft and the end cover are fixed (the rotating speed is 0), and the rotating speed and the torque output by the inner shell on the right side of the speed reducer are 1/2 of the input shaft. The mechanism has the advantages of compact integral structure, high integration level, strong reliability, low processing difficulty and light weight.
Drawings
FIG. 1 is a schematic structural diagram of a vertical coaxial shiftable electric drive axle reduction gearbox assembly in the prior art;
FIG. 2 is a schematic structural diagram of a vertical coaxial shiftable electric drive axle reduction gearbox assembly in the prior art;
FIG. 3 is a schematic structural diagram of an embodiment of the present invention;
fig. 4 is a partially enlarged view of a portion a in fig. 3.
Reference numerals: 1-one shaft assembly, 2-intermediate shaft assembly, 3-main cone shaft assembly, 4-differential assembly, 5-differential gear, 6-speed changer shell, 7-speed reducer shell, 8-sliding meshing sleeve, 9-fixed gear seat, 10-driving bevel gear, 11-driven bevel gear, middle 12-intermediate shaft normally meshing gear, 13-intermediate shaft low-speed gear, 14-main cone shaft low-speed gear and 15-intermediate shaft;
101-left reducer outer shell, 102-right reducer outer shell, 103-input shaft, 104-output shaft, 105-left reducer bevel gear, 106-right reducer bevel gear, 107-left reducer inner shell, 108-right reducer inner shell, 109-planetary reducer bevel gear, 110-tooth holder, 111-sliding meshing sleeve, 112-end cover, 113-middle reducer outer shell, 114-cylindrical gear;
201-differential left case, 202-differential right case, 203-differential left bevel gear, 204-differential right bevel gear, 205-differential bevel gear, 206-driven cylindrical gear.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. It is to be noted that all the figures are exemplary representations. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Example 1
Referring to fig. 3, an embodiment of the present invention provides a shift mechanism of an integrated electrically driven axle reducer with a differential structure, including: the speed reducer assembly and the differential mechanism assembly are integrated into a whole.
Wherein, the reduction gear assembly includes: a reducer housing for supporting an input shaft 103 and an output shaft 104 disposed therein and rotatably connected thereto.
The input shaft 103, the front end of the input shaft 103 is used for connecting with external power, the external power is preferably but not limited to an electric motor, the output shaft of the electric motor is in transmission connection with the front end of the input shaft 103, the tail end of the input shaft 103 is connected with a left bevel gear 105 of the speed reducer, and the input shaft 103 drives the left bevel gear 105 of the speed reducer to synchronously rotate in the shell of the speed reducer.
The axes of the output shaft 104 and the input shaft 103 are collinear, the front end of the output shaft 104 is connected with a right bevel gear 106 of the speed reducer, and the output shaft 104 and the right bevel gear 106 of the speed reducer synchronously rotate in the shell of the speed reducer.
The right inner shell 108 of the speed reducer is sleeved on the output shaft 104 and is rotationally connected with the output shaft 104, and the right inner shell 108 of the speed reducer freely rotates on the output shaft 104. The cylindrical gear 114 is arranged on the outer circle of the inner shell 108 on the right side of the speed reducer, the cylindrical gear 114 and the inner shell 108 on the right side of the speed reducer are of an integrally formed structure, and the cylindrical gear 114 of the inner shell 108 on the right side of the speed reducer is used for driving the differential assembly to operate.
And the reducer planet bevel gear 109 is arranged on the reducer right inner shell 108 and is in rotary connection with the reducer right inner shell 108. The reducer planetary bevel gear 109 is engaged and connected between the reducer left bevel gear 105 and the reducer right bevel gear 106, and the input shaft 103 drives the output shaft 104 to rotate through the reducer planetary bevel gear 109. When the output shaft 104 is locked, the input shaft 103 drives the reducer right inner housing 108 to rotate through the reducer planetary bevel gear 109.
The tooth holder 110 is sleeved on the output shaft 104 and moves synchronously with the output shaft 104, and the tooth holder 110 freely moves in a straight line left and right on the output shaft 104 along the axial direction of the output shaft 104. When the tooth holder 110 moves to the left to the set position, the tooth holder 110 is fixedly connected with the right inner shell 108 of the speed reducer, and when the tooth holder 110 moves to the right to the set position, the tooth holder is fixedly connected with the outer shell of the speed reducer.
Principle of operation
The invention discloses a gear shifting mechanism of an integrated electrically-driven axle speed reducer with a differential structure. This reduction gear assembly can realize two fender position of high-speed gear and low-speed gear, can realize the shift of velocity ratio 1 and 2, and wherein reduction gear assembly refers to gearbox rear auxiliary box gearshift structural arrangement. The parts of the speed reducer assembly can be used as the parts of the gear shifting mechanism of the rear auxiliary box of the existing gearbox.
The power transmission route of the mechanism is as follows: the motor torque passes through an input shaft 103, a left bevel gear 105 of the speed reducer, a planetary bevel gear 109 of the speed reducer, a right bevel gear 106 of the speed reducer, a right inner shell 108 of the speed reducer, a cylindrical gear 114, a differential assembly, a half shaft and a wheel end.
This reduction gear assembly is realizing high-speed and low-speed freely shifting, when keeping off at a high speed: the tooth holder 110 slides leftwards, the tooth holder 110 is connected with the right inner shell 108 of the speed reducer through a spline, therefore, the output shaft 104 is fixed with the right inner shell 108 of the speed reducer, and the output rotating speed and the output torque of the right inner shell 108 of the speed reducer are consistent with those of the input shaft 103. At low gear: the tooth holder 110 slides to the right, and the tooth holder 110 is spline-connected with the outer shell of the speed reducer, so that the output shaft 104 is fixed with the outer shell of the speed reducer (the rotating speed is 0), and the inner shell 108 on the right side of the speed reducer outputs 1/2 of the rotating speed and the torque of the input shaft 103.
Example 2
Referring to fig. 3, an embodiment of the present invention provides a gear shifting mechanism with a differential structure integrated with an electrically driven axle reducer, and the present embodiment is different from embodiment 1 in that: the reducer shell comprises a left reducer shell 101, a right reducer shell 102 and a middle reducer shell 113, and the left reducer shell 101 and the right reducer shell 102 are buckled with each other to form a cavity structure. The left reducer shell 101, the right reducer shell 102 and the middle reducer shell 113 provide support and installation space for the reducer assembly and the differential assembly. The left reducer shell 101 and the right reducer shell 102 are detachably and hermetically connected through bolts, the middle reducer shell 113 is located on one side of the right reducer shell 102, and the middle reducer shell 113 is respectively connected with the left reducer shell 101 and the right reducer shell 102 through bolts.
Example 3
Referring to fig. 3, an embodiment of the present invention provides a gear shifting mechanism with a differential structure integrated with an electrically driven axle reducer, and the present embodiment is different from embodiment 1 in that: the tail end of the input shaft 103 is in interference connection with a left bevel gear 105 of the speed reducer, and the input shaft 103 drives the left bevel gear 105 of the speed reducer to synchronously rotate in the shell of the speed reducer. A left speed reducer inner shell 107 is sleeved on the left speed reducer bevel gear 105, and the left speed reducer inner shell 107 is fixedly connected with a right speed reducer inner shell 108. A cavity for mounting the left bevel gear 105, the right bevel gear 106 and the planetary bevel gear 109 of the reducer is formed between the left inner shell 107 and the right inner shell 108 of the reducer. The axis of the reducer left inner shell 107 is collinear with the axis of the reducer left bevel gear 105. The speed reducer left side inner shell 107 is connected with the speed reducer left outer shell 101 of the speed reducer outer shell in a matched mode through a tapered roller bearing, and the speed reducer left side inner shell 107 is connected with the speed reducer left side bevel gear 105 in a matched mode through a needle bearing.
The front end of the output shaft 104 is in interference connection with a right bevel gear 104 of the speed reducer, and the output shaft 104 and the right bevel gear 106 of the speed reducer synchronously rotate in the shell of the speed reducer. The right inner shell 108 of the speed reducer is sleeved on the right bevel gear 106 of the speed reducer, and the axis of the right inner shell 108 of the speed reducer is collinear with the axis of the right bevel gear 106 of the speed reducer. The reducer right inner shell 108 is connected with the reducer right outer shell 102 of the reducer outer shell in a matched mode through a tapered roller bearing, and the reducer right inner shell 108 is connected with the reducer right bevel gear 106 in a matched mode through a needle bearing.
Example 4
Referring to fig. 3, an embodiment of the present invention provides a gear shifting mechanism with a differential structure integrated with an electrically driven axle reducer, and the present embodiment is different from embodiment 1 in that: two reducer planetary bevel gears 109 are arranged on the inner shell 108 on the right side of the reducer, and the axes of the two reducer planetary bevel gears 109 are collinear and perpendicular to the axes of the output shaft 104 and the input shaft 103. Two reducer planetary bevel gears 109 are symmetrically arranged on two sides of the output shaft 104 and the input shaft 103, and the two reducer planetary bevel gears 109 are in fit connection with the right inner shell 108 of the reducer through spherical needle bearings.
Example 5
Referring to fig. 3, an embodiment of the present invention provides a gear shifting mechanism with a differential structure integrated with an electrically driven axle reducer, and the present embodiment is different from embodiment 1 in that: the tail end of the output shaft 104 is provided with a spline groove along the circumference of the output shaft 104, and the length direction of the spline groove is parallel to the axis of the output shaft 104. The tooth holder 110 is of a circular ring structure, the inner circle of the tooth holder 110 is provided with a spline which is in fit connection with the spline groove of the output shaft 104, and the tooth holder 110 moves linearly left and right on the output shaft 104 along the length direction of the output shaft 104. The tooth holder 110 is provided with a sliding engaging sleeve 111 for driving the tooth holder 110 to linearly move left and right on the output shaft 104, the sliding engaging sleeve 111 is rotatably connected with the tooth holder 110, and the tooth holder 110 is provided with a boss for limiting the movement of the sliding engaging sleeve 111 on the tooth holder 110.
Referring to fig. 3 and 4, the tooth holder 110 is connected to the right inner casing 108 of the speed reducer through a spline, a spline housing connected to the right inner casing 108 of the speed reducer is provided at the left end of the tooth holder 110, a spline shaft connected to the tooth holder 110 is provided at the right end of the right inner casing 108 of the speed reducer, and the spline housing of the tooth holder 110 is connected to the spline shaft of the right inner casing 108 of the speed reducer in a plug-in manner. The right end of the tooth holder 110 is provided with a spline shaft connected with the end cover 112, the end cover 112 is provided with a spline housing connected with the tooth holder 110, the spline shaft of the tooth holder 110 is connected with the spline housing of the end cover 112 in a plugging and pulling manner, the end cover 112 is sealed on the right reducer shell 102 of the reducer shell, and the end cover 112 is connected with the right reducer shell 102 of the reducer shell through bolts.
This reduction gear assembly is when high-speed fender: the sliding engaging sleeve 111 is operated to drive the gear seat 110 to slide leftwards, the spline sleeve of the gear seat 110 is connected with the spline shaft of the inner shell 108 on the right side of the speed reducer in a plugging and unplugging manner, so that the output shaft 104 is fixed with the inner shell 108 on the right side of the speed reducer, the inner shell 108 on the right side of the speed reducer and the output shaft 104 synchronously rotate, and the output rotating speed and the output torque of the inner shell 108 on the right side of the. At low gear: the sliding engagement sleeve 111 is operated to drive the tooth holder 110 to slide rightwards, the spline shaft of the tooth holder 110 is connected with the spline sleeve of the end cover 112 in a plugging and unplugging mode, therefore, the output shaft 104 is fixed with the outer shell of the speed reducer (the rotating speed of the output shaft 104 is 0), and the rotating speed and the torque output by the inner shell 108 on the right side of the speed reducer are 1/2 of the input shaft 103.
Example 6
Referring to fig. 3, an embodiment of the present invention provides a gear shifting mechanism with a differential structure integrated with an electrically driven axle reducer, and the present embodiment is different from embodiment 1 in that: the differential assembly includes: the differential left shell 201 and the differential right shell 202 are arranged in the speed reducer shell and are in rotary connection with the speed reducer shell, and the differential left shell 201 and the differential right shell 202 are located in the speed reducer shell. The axes of the differential left shell 201 and the differential right shell 202 are collinear, and a cavity for mounting a differential left bevel gear 203, a differential right bevel gear 204 and a differential bevel gear 205 is formed between the differential left shell 201 and the differential right shell 202.
The differential left bevel gear 203 and the differential right bevel gear 204 are arranged in parallel, the differential left bevel gear 203 is in rotary connection with the differential left shell 201, the differential right bevel gear 204 is in rotary connection with the differential right shell 202, and the axes of the differential left bevel gear 203 and the differential right bevel gear 204 are collinear.
And two differential bevel gears 205 are arranged, and the two differential bevel gears 205 are in meshed connection between the differential left side bevel gear 203 and the differential right side bevel gear 204. The axes of the two differential bevel gears 205 are collinear and mutually perpendicular to the axes of the differential left side bevel gear 203 and the differential right side bevel gear 204. The left bevel gear 203 and the differential right bevel gear 204 are in transmission connection through a differential bevel gear 205.
The driven cylindrical gear 206 and the driven cylindrical gear 206 are respectively collinear with the axial lines of the left differential shell 201 and the right differential shell 202, the driven cylindrical gear 206 is fixedly connected with the left differential shell 201 and the right differential shell 202 through bolts, and the driven cylindrical gear 206 is meshed with the cylindrical gear 114 of the right inner shell 108 of the speed reducer.
Example 7
Referring to fig. 3, an embodiment of the present invention provides a gear shifting mechanism with a differential structure integrated with an electrically driven axle reducer, and the present embodiment is different from embodiment 6 in that: the differential left shell 201 is connected with the reducer left shell 101 of the reducer shell in a matching way through a tapered roller bearing. The differential left bevel gear 203 is in fit connection with the differential left shell 201 through a needle bearing. The differential right shell 202 is connected with the reducer middle shell 113 of the reducer shell in a matching way through a tapered roller bearing. And the differential right bevel gear 204 is in fit connection with the differential right shell 202 through a needle bearing. The differential bevel gear 205 is rotationally connected with the differential left shell 201, and the differential bevel gear 205 is in fit connection with the differential left shell 201 through a spherical needle roller bearing.
Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are also within the scope of the present invention, provided they are within the scope of the claims of the present invention and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (10)
1. The utility model provides an integrated electricity of differential structure drives axle reduction gear gearshift, its characterized in that includes: a reducer assembly and a differential assembly;
the reduction gear assembly includes: a gear housing for supporting an input shaft (103) and an output shaft (104) disposed therein and rotationally connected thereto;
the front end of the input shaft (103) is used for being connected with external power, and the tail end of the input shaft (103) is connected with a left bevel gear (105) of the speed reducer;
the output shaft (104) and the input shaft (103) are collinear in axis, and the front end of the output shaft (104) is connected with a right bevel gear (106) of the speed reducer;
the right side inner shell (108) of the speed reducer is sleeved on the output shaft (104) and is rotationally connected with the output shaft (104), a cylindrical gear (114) is arranged on the excircle of the right side inner shell (108) of the speed reducer, and the cylindrical gear (114) of the right side inner shell (108) of the speed reducer is used for driving the differential assembly to rotate;
the reducer planetary bevel gear (109) is arranged on the reducer right inner shell (108) and is rotationally connected with the reducer right inner shell (108), the reducer planetary bevel gear (109) is meshed and connected between the reducer left bevel gear (105) and the reducer right bevel gear (106), and the input shaft (103) drives the output shaft (104) or the reducer right inner shell (108) to rotate through the reducer planetary bevel gear (109);
the gear seat (110) is sleeved on the output shaft (104) and rotates synchronously with the output shaft (104), the gear seat (110) moves left and right on the output shaft (104), the gear seat (110) is fixedly connected with the inner shell (108) on the right side of the speed reducer when moving left, and the gear seat (110) is fixedly connected with the outer shell of the speed reducer when moving right.
2. The integrated electric drive axle retarder shifting mechanism of differential architecture as claimed in claim 1, wherein:
the reducer shell comprises a left reducer shell (101), a right reducer shell (102) and a middle reducer shell (113), the left reducer shell (101) and the right reducer shell (102) are mutually buckled to form a cavity structure, the left reducer shell (101) and the right reducer shell (102) are detachably connected in a sealing mode through bolts, and the middle reducer shell (113) is connected with the left reducer shell (101) and the right reducer shell (102) through bolts.
3. The integrated electric drive axle retarder shifting mechanism of differential architecture as claimed in claim 1, wherein:
the end of input shaft (103) and reduction gear left side bevel gear (105) interference connection, the cover is equipped with reduction gear left side inner shell (107) on reduction gear left side bevel gear (105), reduction gear left side inner shell (107) and reduction gear right side inner shell (108) fixed connection, form the cavity that is used for installing reduction gear left side bevel gear (105), reduction gear right side bevel gear (106) and reduction gear planet bevel gear (109) between reduction gear left side inner shell (107) and reduction gear right side inner shell (108), be connected through the cooperation of tapered roller bearing between reduction gear left side inner shell (107) and the reduction gear shell, be connected through the needle bearing cooperation between reduction gear left side inner shell (107) and reduction gear left side bevel gear (105).
4. The integrated electric drive axle retarder shifting mechanism of differential architecture as claimed in claim 1, wherein:
the front end of the output shaft (104) is in interference connection with a right bevel gear (106) of the speed reducer, a right inner shell (108) of the speed reducer is sleeved on the right bevel gear (106) of the speed reducer, the right inner shell (108) of the speed reducer is in fit connection with an outer shell of the speed reducer through a tapered roller bearing, and the right inner shell (108) of the speed reducer is in fit connection with the right bevel gear (106) of the speed reducer through a needle bearing.
5. The integrated electric drive axle retarder shifting mechanism of differential architecture as claimed in claim 1, wherein:
the two planetary bevel gears (109) are arranged on the inner shell (108) on the right side of the speed reducer, the axes of the two planetary bevel gears (109) are collinear and are perpendicular to the axes of the output shaft (104) and the input shaft (103), the two planetary bevel gears (109) are symmetrically arranged on two sides of the output shaft (104) and the input shaft (103), and the two planetary bevel gears (109) and the inner shell (108) on the right side of the speed reducer are connected in a matched mode through spherical needle bearings.
6. The integrated electric drive axle retarder shifting mechanism of differential architecture as claimed in claim 1, wherein:
the tail end of the output shaft (104) is provided with a spline groove along the circumference of the output shaft (104), the length direction of the spline groove is parallel to the axis of the output shaft (104), the inner circle of the tooth holder (110) is provided with a spline which is in fit connection with the spline groove, the tooth holder (110) linearly moves left and right on the output shaft (104) along the length direction of the output shaft (104), the tooth holder (110) is provided with a sliding meshing sleeve (111) which drives the tooth holder (110) to linearly move left and right on the output shaft (104), the sliding meshing sleeve (111) is rotatably connected with the tooth holder (110), and the tooth holder (110) is provided with a boss which limits the sliding meshing sleeve (111) to move left and right on the tooth holder (110).
7. The integrated electric drive axle retarder shifting mechanism of differential architecture as claimed in claim 1, wherein:
the utility model discloses a reducer, including reduction gear, toothholder (110), spline connection, spline shaft, end cover (112), spline shaft, end cover (110), spline shaft, end cover (112), spline shaft and end cover (112), toothholder (110) pass through splined connection with reduction gear right side inner shell (108), the left end of toothholder (110) is equipped with the spline housing of being connected with reduction gear right side inner shell (108), the right-hand member of toothholder (110) is equipped with the spline shaft of being connected with end cover (112), be equipped with the spline housing of being connected with toothholder (110) on end cover (112), the spline shaft of toothholder (110) and the spline housing plug of end cover (112) are connected, end cover (112) seal on the reduction gear shell, end cover (112) pass through bolted connection with the reduction gear.
8. The integrated electric drive axle retarder shifting mechanism of differential architecture as claimed in claim 1, wherein:
the differential assembly includes: the differential mechanism comprises a differential mechanism left shell (201) and a differential mechanism right shell (202), wherein the differential mechanism left shell (201) and the differential mechanism right shell (202) are positioned in a speed reducer shell and are in rotary connection with the speed reducer shell, the axes of the differential mechanism left shell (201) and the differential mechanism right shell (202) are collinear, and a cavity for mounting a differential mechanism left bevel gear (203), a differential mechanism right bevel gear (204) and a differential mechanism bevel gear (205) is formed between the differential mechanism left shell (201) and the differential mechanism right shell (202);
the differential mechanism comprises a differential mechanism left side bevel gear (203) and a differential mechanism right side bevel gear (204), wherein the differential mechanism left side bevel gear (203) is rotationally connected with a differential mechanism left shell (201), the differential mechanism right side bevel gear (204) is rotationally connected with a differential mechanism right shell (202), and the axes of the differential mechanism left side bevel gear (203) and the differential mechanism right side bevel gear (204) are collinear;
the two differential bevel gears (205) are arranged, the two differential bevel gears (205) are meshed and connected between the differential left side bevel gear (203) and the differential right side bevel gear (204), the axes of the two differential bevel gears (205) are collinear and are perpendicular to the axes of the differential left side bevel gear (203) and the differential right side bevel gear (204), and the differential left side bevel gear (203) and the differential right side bevel gear (204) are in transmission connection through the differential bevel gears (205);
the driven cylindrical gear (206) is collinear with the axial lines of the differential left shell (201) and the differential right shell (202) respectively, the driven cylindrical gear (206) is fixedly connected with the differential left shell (201) and the differential right shell (202) through bolts, and the driven cylindrical gear (206) is meshed with the cylindrical gear (114) of the reducer right inner shell (108).
9. The integrated electric drive axle retarder shifting mechanism of differential architecture as claimed in claim 8, wherein:
the differential mechanism is characterized in that the differential mechanism left shell (201) is connected with the speed reducer shell in a matched mode through a tapered roller bearing, the differential mechanism left bevel gear (203) is connected with the differential mechanism left shell (201) in a matched mode through a needle roller bearing, the differential mechanism right shell (202) is connected with the speed reducer shell in a matched mode through a tapered roller bearing, the differential mechanism right bevel gear (204) is connected with the differential mechanism right shell (202) in a matched mode through a needle roller bearing, the differential mechanism bevel gear (205) is rotationally connected with the differential mechanism left shell (201), and the differential mechanism bevel gear (205) is connected with the differential mechanism left shell (201) in a matched mode through a spherical needle.
10. The integrated electric drive axle retarder shifting mechanism of differential architecture as claimed in claim 1, wherein:
the device also comprises a motor, and an output shaft of the motor is in transmission connection with the front end of the input shaft (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911295192.2A CN110894871A (en) | 2019-12-16 | 2019-12-16 | Gear shifting mechanism of integrated electrically-driven bridge speed reducer with differential structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911295192.2A CN110894871A (en) | 2019-12-16 | 2019-12-16 | Gear shifting mechanism of integrated electrically-driven bridge speed reducer with differential structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110894871A true CN110894871A (en) | 2020-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911295192.2A Pending CN110894871A (en) | 2019-12-16 | 2019-12-16 | Gear shifting mechanism of integrated electrically-driven bridge speed reducer with differential structure |
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| CN (1) | CN110894871A (en) |
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| CN201672004U (en) * | 2010-04-30 | 2010-12-15 | 长春思达汽车技术咨询有限公司 | One-gear speed changing device for electric bus or truck |
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Application publication date: 20200320 |