CN114673727B - Thrust bearing, hybrid transmission and vehicle - Google Patents
Thrust bearing, hybrid transmission and vehicle Download PDFInfo
- Publication number
- CN114673727B CN114673727B CN202210362700.XA CN202210362700A CN114673727B CN 114673727 B CN114673727 B CN 114673727B CN 202210362700 A CN202210362700 A CN 202210362700A CN 114673727 B CN114673727 B CN 114673727B
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- Prior art keywords
- thrust bearing
- corner piece
- section
- retainer
- hybrid transmission
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 35
- 238000005452 bending Methods 0.000 claims abstract description 37
- 238000005096 rolling process Methods 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims description 41
- 238000000034 method Methods 0.000 abstract description 26
- 238000009434 installation Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000003879 lubricant additive Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/06—Ball or roller bearings
- F16C23/08—Ball or roller bearings self-adjusting
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
- F16C19/305—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly consisting of rollers held in a cage
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
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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
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a thrust bearing, a hybrid transmission and a vehicle, wherein the thrust bearing is used for the hybrid transmission and comprises a first corner piece, a second corner piece and a retainer assembly, and the first corner piece comprises a first straight edge section; the second corner piece comprises a second straight edge section and a second bending section connected with the second straight edge section; the retainer assembly comprises a retainer and rolling bodies arranged in the retainer, wherein the first straight edge section, the second straight edge section and the second bending section are enclosed to form an accommodating space with an opening towards one side, and the retainer assembly is arranged in the accommodating space. The technical scheme of the invention solves the problem that the retainer is broken due to the collision between the radial direction of the retainer and the corner pieces in the thrust bearing operation process.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to a thrust bearing, a hybrid transmission and a vehicle.
Background
The thrust bearing is arranged on the output shaft of the hybrid transmission, compared with a double-tapered roller bearing structure, the efficiency can be improved, noise is reduced, but because the thrust bearing needs to be centered when in operation (because the axial force on the shaft is related to the operation direction when in operation, the axial direction can be reversed when in acceleration and deceleration, the thrust bearing can be in loose fit to the compressed process in the reversing process, the center of the thrust bearing can move upwards from the bottommost end, the process is center adjustment), the bearing retainer can be impacted by the radial direction of the corner piece in the aligning process, so that the retainer of the thrust bearing breaks, namely, when the thrust bearing of the existing structure runs on a real vehicle, the intermediate shaft can quickly switch from a positive towing condition to a negative towing condition due to road stability, a deceleration strip or a roadblock and the like, meanwhile, the axial force of the intermediate shaft can reversely impact the bearing, and after the thrust shaft bears the impact, the corner piece of the retainer impacts the corner piece, so that the bearing retainer breaks.
Disclosure of Invention
The invention mainly aims to provide a thrust bearing, which aims to solve the problem of collision between a retainer and a corner piece in the operation process of the thrust bearing.
In order to achieve the above object, the present invention provides a thrust bearing for a hybrid transmission, the thrust bearing comprising:
a first gusset including a first straight edge section;
the second corner piece comprises a second straight edge section and a second bending section connected with the second straight edge section; and
The retainer assembly comprises a retainer and rolling bodies arranged in the retainer, wherein the first straight edge section, the second straight edge section and the second bending section are enclosed to form an accommodating space with an opening towards one side, and the retainer assembly is arranged in the accommodating space.
Optionally, the opening is towards the cage assembly near the outside of the hybrid transmission case.
Optionally, the thrust bearing further includes a pressing piece, the first corner piece is located between the retainer component and the pressing piece, the pressing piece is fixedly connected with the first corner piece, the pressing piece is provided with a mounting portion on one side of the opening, and the mounting portion is used for being fixedly connected with a housing of the hybrid transmission.
Optionally, the pressing piece and the first corner piece are integrally arranged.
Optionally, the pressing piece is fastened and fixed with the first corner piece.
Optionally, the first corner piece still include with the first bending section that first straight edge section is connected, first bending section is followed and is close to the preforming direction extends, first bending section is kept away from the tip of first straight edge section is equipped with the buckle, the preforming correspond the buckle is equipped with the catching groove, first bending section with the preforming passes through the buckle with the catching groove joint is fixed.
Optionally, the buckle is provided with a plurality of buckle grooves, the buckle grooves are annular grooves, and the plurality of buckle grooves are inserted into the annular grooves.
Optionally, a plurality of the buckle intervals are arranged on the first bending section.
The invention also proposes a hybrid transmission comprising: the device comprises an output shaft, the thrust bearing mounted on the output shaft and a support bearing mounted on the output shaft and used for bearing radial force.
The invention also proposes a vehicle comprising: a hybrid transmission as described above.
According to the technical scheme, the first corner piece, the second corner piece and the retainer component are adopted, and the first corner piece comprises a first straight edge section; the second corner piece comprises a second straight edge section and a second bending section connected with the second straight edge section; the retainer assembly comprises a retainer and rolling bodies arranged in the retainer, wherein the first straight edge section, the second straight edge section and the second bending section are enclosed to form an accommodating space with an opening towards one side, and the retainer assembly is arranged in the accommodating space. The thrust bearing is installed on the output shaft, because of the arrangement of the opening, the bearing retainer can move along the opening direction in the aligning process, the problem that the retainer breaks due to the impact of the first corner piece or the second corner piece is avoided, and the retainer can freely move up and down without any collision during the aligning operation of the thrust bearing, so that the noise is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a thrust bearing according to an embodiment of the present invention;
FIG. 2 is an exploded view of the thrust bearing of FIG. 1;
FIG. 3 is a schematic illustration of the thrust bearing of FIG. 1 with the compression plate removed;
fig. 4 is a schematic view of the thrust bearing of fig. 1 disposed on an output shaft.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The thrust bearing is arranged on the output shaft of the hybrid transmission, compared with a double-tapered roller bearing structure, the efficiency can be improved, noise is reduced, but because the thrust bearing needs to be centered when in operation (because the axial force on the shaft is related to the operation direction when in operation, the axial direction can be reversed when in acceleration and deceleration, the thrust bearing can be in loose fit to the compressed process in the reversing process, the center of the thrust bearing can move upwards from the bottommost end, the process is center adjustment), the bearing retainer can be impacted by the radial direction of the corner piece in the aligning process, so that the retainer of the thrust bearing breaks, namely, when the thrust bearing in the existing structure runs on a real vehicle, the intermediate shaft can quickly switch from a positive towing condition to a negative towing condition due to road stability, a deceleration strip or a roadblock and the like, meanwhile, the axial force of the intermediate shaft can reversely impact the bearing, and after the thrust shaft bears the impact, the corner piece of the retainer impacts the corner piece, so that the bearing retainer breaks.
The invention aims to solve the problem that a retainer breaks and fails due to impact of a corner piece in the application of a thrust bearing of an intermediate shaft of the existing special hybrid transmission.
To this end, the invention proposes a thrust bearing.
Referring to fig. 1-3, the thrust bearing 10 includes a first gusset 6, a second gusset 2, and a cage assembly 3; the first corner piece 6 comprises a first straight edge section 61; the second corner piece 2 comprises a second straight edge section 21 and a second bending section 22 connected with the second straight edge section 21; the cage assembly 3 comprises a cage 4, rolling bodies 5 mounted in the cage 4, the first straight edge section 61, the second straight edge section 21 and the second bending section 22 enclose a containing space with an opening towards one side, and the cage assembly 3 is placed in the containing space.
The thrust bearing 10 is mounted on the output shaft 20 of the hybrid transmission, the first corner piece 6 and the second corner piece 2 are annular, and the retainer component 3 is arranged between the first corner piece 6 and the second corner piece 2, so as to avoid the problem that the retainer 4 is broken due to the fact that the retainer component 3 impacts the first corner piece 6 and the second corner piece 2 in the radial direction in the aligning process during the running process of the vehicle.
In this embodiment, the opening is towards the outside of the cage assembly 3, as shown in fig. 1, near the hybrid transmission case. During operation, when the retainer assembly 3 moves radially outwards, the first corner piece 6 and the second corner piece 2 cannot impact the retainer 4, so that the problem that the retainer 4 is broken due to the fact that the retainer 4 impacts the first corner piece 6 and the second corner piece 2 in the radial direction due to the aligning process is avoided.
In other embodiments, the first straight edge section 61, the cage assembly 3 and the second straight edge section 21 are arranged in the axial direction, and the opening of the accommodating space formed by the first straight edge section 61, the second straight edge section 21 and the second bending section 22 faces the inner side of the cage assembly 3 away from the hybrid transmission case. The first corner piece 6 is close to one side of the mixer-variable box, the second corner piece 2 is close to one side of the output shaft 20, and in the actual operation process, because the opening is arranged, the inward opening cannot impact the retainer 4 in the aligning process of the thrust bearing 10, and because no impact force is given to the inner side, even if the retainer 4 slightly impacts the other side, the retainer 4 cannot be broken.
The technical scheme of the invention is that a first corner piece 6, a second corner piece 2 and a retainer component 3 are adopted, wherein the first corner piece 6 comprises a first straight edge section 61; the second corner piece 2 comprises a second straight edge section 21 and a second bending section 22 connected with the second straight edge section 21; the cage assembly 3 comprises a cage 4, rolling bodies 5 mounted in the cage 4, the first straight edge section 61, the second straight edge section 21 and the second bending section 22 enclose a containing space with an opening towards one side, and the cage assembly 3 is placed in the containing space. The thrust bearing 10 is installed on the output shaft 20, because of the arrangement of the opening, the bearing retainer 4 can move along the opening direction in the aligning process, so that the problem that the retainer 4 breaks due to the impact of the first corner piece 6 or the second corner piece 2 is avoided, and the retainer 4 can freely move up and down without any collision and noise during aligning operation of the thrust bearing 10.
In order to solve the problem of the fixed mounting of the thrust bearing 10 when the opening is directed outward. In this embodiment, the thrust bearing 10 further includes a pressing piece 1, the first corner piece 6 is located between the retainer assembly 3 and the pressing piece 1, the pressing piece 1 is fixedly connected with the first corner piece 6, a mounting portion 11 is disposed on one side of the opening of the pressing piece 1, and the mounting portion 11 is fixedly connected with a housing of the hybrid transmission.
Referring to fig. 1 and 2, in the present embodiment, a mounting portion 11 is provided on a pressing sheet 1, the mounting portion 11 is provided with a mounting hole 111, and the mounting hole 111 is used for being connected and fixed with a transmission case, for example, by bolts; in order to ensure the stability of circumferential fixation, the mounting portions 11 of the compression sheet 1 are provided with a plurality of mounting portions 11, such as two symmetrical mounting portions, three mounting portions 11 at intervals, and the like, and the three mounting portions 11 are preferably distributed at intervals, and are fixedly connected with the shell through mounting holes 111 in the three mounting portions 11, so that the stability of the structure can be ensured, and the firmness of connection with the shell can be ensured. The retainer assembly 3 comprises rolling bodies 5 and a retainer 4 for mounting the rolling bodies 5, and the retainer 4 wraps all the rolling bodies 5 and moves along with the rolling bodies; the rolling bodies 5 can be rolling pins, rollers or balls, the retainer assembly 3 is arranged between the pressing sheet 1 and the second corner piece 2, the second corner piece 2 is fixed on the output shaft 20 of the transmission, the retainer 4 is subjected to great centrifugal force, impact and vibration when the thrust bearing 10 works, particularly when the load is complex and rotates at a high speed, the pressing sheet 1 and the transmission shell are fixedly connected through three fixing bolts when the thrust bearing 10 operates, the retainer 4 can freely move up and down without any collision when the thrust bearing 10 operates in a aligning manner, so that the collision between the retainer 4 and the bearing pressing sheet 1 is completely avoided in the operation process of the thrust bearing 10, and the problem of bearing roller slipping caused by stress deformation of the retainer 4 is solved; in addition, the bearing efficiency is improved by reducing impact and friction loss in the running process, collision is effectively reduced, and noise can be reduced.
In addition, when the load is complicated and the rotation is performed at a high speed, the cage 4 is subjected to a large centrifugal force, impact and vibration, there is a large sliding friction between the cage 4 and the rolling elements 5, and a large amount of heat is generated. The result of the combined action of force and heat can lead to failure of the cage 4 and, in severe cases, burn and fracture of the cage 4. Therefore, besides the requirements of good thermal conductivity, good wear resistance, small friction coefficient, low density, certain strength and toughness, good elasticity and rigidity of the cage 4 material, the expansion coefficient similar to that of the rolling elements 5 and good technological properties. In addition, the cage 4 is subjected to chemical media such as lubricants, lubricant additives, organic solvents, coolants, and the like. The opening that this scheme adopted first straight flange section 61, second straight flange section 21 and second to buckle section 22 to constitute can make the bearing roller and the incasement splash oil and associate, has promoted thrust bearing 10's lubrication level and heat dissipation ability and has promoted the life-span of bearing.
In other embodiments, the compression sheet 1 is integrally provided with the first corner piece 6. Such as stamping, injection molding, etc. The compression plate 1 integrates the function of the first corner piece 6 on the thrust bearing 10.
Further, the pressing sheet 1 is clamped and fixed with the first corner piece 6.
In order to ensure the structural stability and reliability of the thrust bearing 10, the first corner piece 6 and the pressing piece 1 are arranged in a split manner and are fixed through clamping. The preforming 1 can play bearing structure, optimizes thrust bearing 10's overall structure, cooperation inseparabler, and first angle piece 6 is fixed through with preforming 1 joint, and preforming 1 is connected with the casing of derailleur, guarantees thrust bearing 10's stability. In order to ensure that the retainer 4 does not strike the first corner piece 6 when the retainer assembly 3 rotates at a high speed under a complex load, the first corner piece 6 cancels the outside flange, and the retainer 4 of the thrust bearing 10 is prevented from being broken due to the impact of the first corner piece 6 in the aligning process.
Specifically, the first corner piece 6 further includes a first bending section 62 connected with the first straight edge section 61, the first bending section 62 extends along a direction close to the pressing piece 1, a buckle 621 is disposed at an end portion of the first bending section 62 away from the first straight edge section 61, a buckle 621 is disposed at a corresponding portion of the pressing piece 1, and a buckle groove is disposed at the buckle 621, and the first bending section 62 and the pressing piece 1 are fastened and fixed through the buckle 621 and the buckle groove.
Referring to fig. 1 to 3, in this embodiment, in order to prevent the first corner piece 6 from falling when turning over, and facilitate installation and disassembly, the first corner piece 6 is fixed on the tablet 1 by adopting a clamping manner, the cross sections of the first straight edge section 61 and the first bending section 62 of the first corner piece 6 are approximately in an L shape, the end part of the first bending section 62 is provided with a buckle 621, the inner ring of the tablet 1 is placed on the first bending section 62, and then the buckle 621 of the first bending section 62 is inserted into a buckle groove of the tablet 1 for fixing, and the buckle groove can be various in form, for example, the buckle groove and the buckle 621 of the tablet 1 are arranged in a one-to-one correspondence; the setting position of the buckling groove can also be the setting of the inner circle of the pressing sheet 1, or the setting of the side surface of the pressing sheet 1, etc.
In addition, the first corner piece 6 adopts the L-shaped arrangement, the first corner piece 6 cancels the flange facing one side in the gearbox body, and forms an opening, so that the retainer assembly 3 is associated with splash oil in the box, the lubrication level and heat dissipation capacity of the thrust bearing 10 are improved, and the service life of the thrust bearing 10 is prolonged.
Referring to fig. 1 to 3, in particular, the clip 621 is provided with a plurality of clip grooves 12, and the clip 621 is inserted into the annular groove 12.
The fixation of the first corner piece 6 to the compression piece 1 is more stable. The catching groove is annular, so that the processing is convenient on one hand, and the assembly is convenient on the other hand.
For the convenience of the assembly and disassembly of the first corner piece 6 and the pressing piece 1, the falling of the first corner piece 6 and the pressing piece 1 is prevented when the first corner piece 1 is overturned, and a plurality of buckles 621 are uniformly arranged at intervals on the first bending section 62. That is, a plurality of buckles 621 are additionally arranged on the L-shaped short side of the first corner piece 6 of the thrust bearing 10, the buckles 621 are arranged in a protruding mode and are combined with the annular groove 12 formed by the pressing piece 1 to fix the position of the first corner piece 6, and falling is prevented during overturning.
In the present embodiment, the number of the buckles 621 is three, the three buckles 621 are all arranged along the circumferential direction of the first bending section 62, and the first corner piece 6 of the thrust bearing 10 is fixed on the pressing piece 1 through the three buckles 621 of the short side; the pressing piece 1 of the thrust bearing 10 is provided with an annular groove 12 for accommodating three buckles 621, when the buckles 621 are installed on the first corner piece 6 of the thrust bearing 10, the three circumferential directions are uniformly distributed or non-uniformly distributed, after the buckles 621 are pressed into the annular groove 12 of the pressing piece 1, the pressing piece 1 is fixedly connected with the transmission shell through the installation bolts. Thus, the problem of collision possibly generated between the retainer 4 and the first corner piece 6 in the operation process of the thrust bearing 10 is solved, the possibility of noise generation is solved, and the problem that the first corner piece 6 falls off when the buckle 621 is matched with the annular groove 12 of the pressing piece 1 to prevent overturning is solved. The first corner piece 6 is arranged in an L shape, a flange (only a bending section at one end is reserved) is omitted, collision between the retainer 4 and the first corner piece 6 in the operation process of the thrust bearing 10 can be completely avoided, and the problem of bearing roller slipping caused by stress deformation of the retainer 4 is solved; in addition, when the tablet 1 and the first corner piece 6 are assembled, a pressing mode is adopted, namely the first bending section 62 of the first corner piece 6 is pressed into the inner ring of the tablet 1, the buckle 621 on the first bending section 62 is clamped into the annular groove 12 of the inner ring of the tablet 1, for smooth assembly of the tablet 1 and the first corner piece 6, an installation chamfer 121 is arranged at the end part of the annular groove 12 of the tablet 1, namely the end part of the inner ring, the installation chamfer 121 is inclined towards the first straight edge section 61, the buckle 621 of the first bending section 62 is provided with a guide surface 622 corresponding to the installation chamfer 121, the inclination direction is the same as the inclination direction of the installation chamfer 121, and in the pressing process, the installation chamfer 121 and the guide surface 622 can play a role in installation guide, so that the tablet 1 and the first corner piece 6 are convenient to install.
Referring to fig. 1 to 3, in particular, the second corner piece 2 includes a second straight section 21 and a second bent section 22, the second straight section 21 and the second bent section 22 are disposed in an "L" shape, and the retainer assembly 3 is disposed between the first straight section 61 and the second straight section 21 in the second bent section 22.
The first corner piece 6 of the thrust bearing 10 is of an L-shaped structure, and the flanges of the first corner piece 6 and the second corner piece 2 are removed to form an opening facing the inside of the box, so that bearing rollers are associated with splashed oil in the box, the lubrication level and heat dissipation capacity of the bearing are improved, and the service life of the bearing is prolonged.
As shown in fig. 1 to 3, the first straight edge section 61 of the first corner piece 6, the second straight edge section 21 of the second corner piece 2 and the second bending section 22 form an opening facing the transmission case, and the lubricating oil in the case can flow into the retainer assembly 3 from the opening to lubricate the retainer assembly 3, reduce friction and improve heat dissipation.
Referring to fig. 1 to 3, specifically, the mounting portion 11 is provided with a mounting hole 111, and the mounting portion 11 is fixedly connected with a housing of the hybrid transmission by a bolt.
In order to facilitate the assembly and disassembly of the tabletting 1 and the transmission shell, the fixing is stable. The pressing sheet 1 of the thrust bearing 10 is fixed on the shell of the speed changer through three fixing bolts, and the first corner piece 6 of the thrust bearing 10 is clamped and fixed in the annular groove 12 of the pressing sheet 1 through three buckles 621 of the short side of the first corner piece; the second corner piece 2 of the thrust bearing 10 is fixed on the output shaft 20 through a buckle 621 of the inner ring; the output shaft 20 of the transmission is radially supported by radial support bearings 30 to receive forces in the radial direction. During operation, the output shaft 20 rotates to transmit power, and the thrust bearing 10 plays a role in middle support to support the operation of the output shaft 20; in this embodiment, the second corner piece 2 and the first corner piece 6 are both in an L-shaped structure, so that the retainer 4 can freely move up and down without any collision when the thrust bearing 10 is operated in a aligning manner.
Referring to fig. 1, further, the outer edge of the surface of the second corner piece 2, which is used to contact with the output shaft 20 of the hybrid transmission, is provided with a circular arc chamfer 23. The circular arc chamfer 23 can prevent the outer edge of the surface of the second corner piece 2 contacted with the output shaft 20 from being damaged during the working process of the transmission, and the service life of the whole thrust bearing 10 is influenced.
In summary, the first corner piece 6 of the thrust bearing 10 is changed from the S-shape in the prior art to the L-shape, and the possible impact between the retainer 4 and the first corner piece 6 during the operation of the thrust bearing 10 is solved by changing the structure of the first corner piece 6. The position of the first corner piece 6 is fixed by matching a buckle 621 formed by adding three mounting protrusions on the L-shaped short side of the first corner piece 6 of the thrust bearing 10 with the step-shaped annular groove 12 of the pressing piece 1, so that falling is prevented during overturning. The compression sheet 1 is fixed on the housing by bolting through adding three mounting holes 111. The problem of the collision that probably produces between thrust bearing 10 operation in-process holder 4 and the first gusset 6 has been solved above, has solved the possibility that the noise produced, and the buckle 621 of first gusset 6 cooperates with the ring channel 12 of preforming 1, has solved preforming 1 problem that drops when overturning. The structure of the invention can completely avoid the collision between the retainer 4 and the first corner piece 6 of the bearing in the running process of the thrust bearing 10; the invention can solve the problem of bearing roller slipping caused by the forced deformation of the retainer 4; bearing efficiency is improved because impact and friction losses during operation are reduced; collision is effectively reduced, and noise can be reduced; the first corner piece 6 and the second corner piece 2 form an opening, so that bearing rollers are associated with splashed oil in the box, the lubrication level and heat dissipation capacity of the thrust bearing 10 are improved, and the service life of the bearing is prolonged.
Referring to fig. 4, the present invention also proposes a hybrid transmission including an output shaft 20, a thrust bearing 10 mounted to the output shaft 20, and a support bearing 30 mounted to the output shaft 20 for receiving radial force. The specific structure of the thrust bearing 10 refers to the above embodiment, and since the present hybrid transmission adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein. The radial support bearing 30 may be replaced with a bearing that can serve as a radial support, such as a needle bearing, a slide bearing, or a ball bearing.
The invention also proposes a vehicle comprising: such as the hybrid transmission described above.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (8)
1. A thrust bearing for a hybrid transmission, the thrust bearing comprising:
a first gusset including a first straight edge section;
the second corner piece comprises a second straight edge section and a second bending section connected with the second straight edge section; and
A cage assembly including a cage, rolling bodies mounted in the cage, the first straight-sided section, the second straight-sided section, and the second bent-sided section enclosing a receiving space having an opening toward one side toward an outside of the cage assembly near the hybrid transmission case, the cage assembly being disposed within the receiving space;
the thrust bearing further comprises a pressing piece, the first corner piece is located between the retainer assembly and the pressing piece, the pressing piece is fixedly connected with the first corner piece, a mounting portion is arranged on one side of the opening of the pressing piece, and the mounting portion is used for being fixedly connected with a shell of the hybrid transmission.
2. The thrust bearing of claim 1, wherein said tab is integrally provided with said first gusset.
3. The thrust bearing of claim 1, wherein said tab is snap-fit to said first corner tab.
4. The thrust bearing of claim 3, wherein the first corner piece further comprises a first bending section connected with the first straight-side section, the first bending section extends along a direction close to the pressing piece, a buckle is arranged at an end of the first bending section away from the first straight-side section, a buckle groove is arranged at a corresponding buckle of the pressing piece, and the first bending section and the pressing piece are clamped and fixed through the buckle groove and the buckle groove.
5. The thrust bearing of claim 4, wherein said snap fastener has a plurality of said snap fastener grooves having annular grooves, and a plurality of said snap fastener inserts into said annular grooves.
6. The thrust bearing of claim 5 wherein a plurality of said snap-fit spaces are provided in said first bending section.
7. A hybrid transmission, comprising: an output shaft, a thrust bearing according to any one of claims 1 to 6 mounted to the output shaft, a support bearing mounted to the output shaft for receiving radial forces.
8. A vehicle, characterized by comprising: the hybrid transmission of claim 7.
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| CN202210362700.XA CN114673727B (en) | 2022-04-07 | 2022-04-07 | Thrust bearing, hybrid transmission and vehicle |
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Also Published As
| Publication number | Publication date |
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| CN114673727A (en) | 2022-06-28 |
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Effective date of registration: 20240531 Address after: No. 98 Beihui Road, Huishan Industrial Transformation and Agglomeration Zone, Wuxi City, Jiangsu Province, China Patentee after: Wuxi Xingqu Power Technology Co.,Ltd. Country or region after: China Patentee after: Wuxi Xingqu Technology Co.,Ltd. Address before: 310000 1760 Jiangling Road, Binjiang District, Hangzhou, Zhejiang. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Country or region before: China Patentee before: Wuxi Xingqu Technology Co.,Ltd. Patentee before: Wuxi Xingqu Power Technology Co.,Ltd. |