CN107128174B - Transmission shaft medial support structures - Google Patents
Transmission shaft medial support structures Download PDFInfo
- Publication number
- CN107128174B CN107128174B CN201710333889.9A CN201710333889A CN107128174B CN 107128174 B CN107128174 B CN 107128174B CN 201710333889 A CN201710333889 A CN 201710333889A CN 107128174 B CN107128174 B CN 107128174B
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- bracket
- ellipsoid
- bearing block
- support structures
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
- B60K17/24—Arrangements of mountings for shafting
Abstract
The present invention provides a kind of transmission shaft medial support structures, comprising: the bracket of fixed setting is installed on the bearing block of internal stent, there is radial clearance between bearing block and bracket, and the inner peripheral surface of bracket is equipped at least three frame body ellipsoid slots being recessed outward；The outer circumference surface of bearing block is equipped at least three pedestal ellipsoid slots being recessed inwardly；Each frame body ellipsoid slot and the corresponding pedestal ellipsoid slot constitute chamber resettling, are equipped with an elastic ball in each chamber resettling；Along the radial direction of the bracket, each elastic ball is compressed in the corresponding chamber resettling by interference.Automobile segmented transmission shaft of the invention is installed in ball bearing, rolling and compressive deformation mode in chamber resettling are being constituted by the pedestal ellipsoid slot being recessed inwardly on the frame body ellipsoid slot and bearing block that are recessed outward on bracket by elastic ball, the axial force acted on from automobile segmented transmission shaft, radial force, peripheral force can be born and swinging square.
Description
Technical field
The present invention relates to automotive power transmission system parts technical fields, more particularly to a kind of transmission shaft intermediate supports
Structure.
Background technique
Automotive power transmission system is usually by engine, gearbox, transfer gear, transmission shaft, main reducing gear, differential mechanism and half
Axis etc. is constituted.The effect of truck drive shaft is that engine power is transmitted to rear-end gear reduction from preceding bridge transfer gear, if preceding
The distance of rear axle is longer, then needs just to need to connect in the transmission shaft of segmentation at this time using two-part even three-piece propeller shaft
Head position setting transmission shaft intermediate supports.The main function of transmission shaft medial support structures be the transmission shaft of segmented is provided with
Suspension strut between automobile chassis, while bearing the axial force, radial force, peripheral force and the swing that act on from transmission shaft
Square, high performance transmission shaft medial support structures are in addition to wanting steadily bear displacement caused by these active forces and pivot angle
Except, there are also requirements durable, that vibration is low with noise.
The transmission shaft medial support structures of technology at present, usually by the parts such as ball bearing, bearing block, rubber ring, bracket structure
At, and bearing block, rubber ring and bracket vulcanize the structure that is combined as a whole, axial force, the radial force, peripheral force of transmission shaft effect
And swing displacement and pivot angle caused by square and mainly undertaken by rubber ring, in the process rubber ring repeated stretching and
Compressive deformation is easy fatigue failure, and the service life is shorter.On the other hand, in order to make damping and the noise reduction of transmission shaft medial support structures
Effect reaches the target call of comfort, and the shape and hardness of rubber ring need repeatedly debugging and tie with bearing block and bracket vulcanization
It closes, and rubber ring is formed in mould, that is to say, that repeatedly modification shaping dies is needed, this is not only increased among transmission shaft
The development cost of support construction, and extend the development cycle of transmission shaft medial support structures.
Summary of the invention
In view of the foregoing deficiencies of prior art, the technical problem to be solved in the present invention is that providing a kind of structure letter
It is single, last a long time and lower-cost transmission shaft medial support structures.
In order to solve the above technical problem, the present invention provides a kind of transmission shaft medial support structures, comprising: fixed setting
Bracket is coaxially installed on the bearing block of the inside of the bracket, there is radial clearance, ball axis between the bearing block and the bracket
It holding and is installed on inside the bearing block, the inner peripheral surface of the bracket is equipped at least three frame body ellipsoid slots being recessed outward,
All frame body ellipsoid slot is arranged circumferentially along the inner peripheral surface of the bracket；The outer circumference surface of the bearing block
Be equipped at least three pedestal ellipsoid slots being recessed inwardly, all pedestal ellipsoid slots along the bearing block excircle
Face is arranged circumferentially；All frame body ellipsoid slots are identical as all quantity of the pedestal ellipsoid slot, size phase
Same and position corresponds；The long axis direction of each frame body ellipsoid slot and the axis parallel of the bracket；It is each described
The long axis direction of pedestal ellipsoid slot and the axis parallel of the bearing block；Each frame body ellipsoid slot and the corresponding seat
Body ellipsoid slot constitutes chamber resettling, is equipped with an elastic ball in each chamber resettling；Along the radial direction of the bracket, Mei Gesuo
Elastic ball is stated to be compressed in the corresponding chamber resettling by interference.
Preferably, the frame body ellipsoid slot is the groove for the semiellipse spherical shape being set on the inner peripheral surface of the bracket；
The pedestal ellipsoid slot is the groove for the semiellipse spherical shape being set on the outer circumference surface of the bearing block.
Further, the short axle of the diameter of the short axle of each frame body ellipsoid slot and each pedestal ellipsoid slot is straight
Diameter is 1.25 times of the diameter of the elastic ball.
Further, the long axis of the diameter of the long axis of each frame body ellipsoid slot and each pedestal ellipsoid slot is straight
Diameter is equal are as follows: 1.15 times of value of the diameter of the elastic ball plus the bearing block unidirectional maximum axial displacement value and value.
Further, the depth of each frame body ellipsoid slot and the depth of each pedestal ellipsoid slot are the bullets
0.35 times of the diameter of property ball.
Preferably, the radial clearance between the bearing block and the bracket is the 0.25 of the diameter of the elastic ball
Times.
Preferably, when transmission shaft medial support structures are in original state, each elastic ball is corresponding described
The amount compressed in chamber resettling by interference is 0.05 times of the diameter of the elastic ball.
Preferably, the elastic ball is ball.
Preferably, the ontology of the bracket and the bearing block are circular ring shape.
Preferably, the outer ring of the inner hole of the bearing block and the ball bearing is interference fit.
Preferably, the edge in the notch face of each frame body ellipsoid slot and the bracket are arc transition；It is each described
The edge and the bearing block in the notch face of pedestal ellipsoid slot are arc transition.
As described above, transmission shaft medial support structures of the invention, have the advantages that
Transmission shaft medial support structures of the invention rely in use, automobile segmented transmission shaft is installed in ball bearing
Elastic ball is by the pedestal ellipsoid slot structure being recessed inwardly on the frame body ellipsoid slot and bearing block that are recessed outward on bracket
At chamber resettling in rolling and compressive deformation mode can bear from automobile segmented transmission shaft act on axial force, diameter
Xiang Li, peripheral force and swing square, axial displacement buffering, the radial positioning for realizing that transmission shaft medial support structures should have are slow
The function of punching, circumferentially positioned buffering and swing positioning buffering；By the elastic ball for replacing different hardness, so that it may easily
The deformation displacement and rigidity numerical value of transmission shaft medial support structures are adjusted, to adapt to even optimize transmission shaft medial support structures
Required different size of displacement and pivot angle range and Vibrant buffer effect, this feature meet transmission shaft with not only can be convenient
The damping of medial support structures and noise reduction effect reach the requirement of comfort target, and make transmission shaft medial support structures
Overall structure is simpler, be easy exploitation, cost is relatively low；Rubber ring in the transmission shaft medial support structures for the prior art that compares
Bullet for the alternating tensile occurred during the work time and compressive deformation, in transmission shaft medial support structures provided by the invention
What property ball always happened during the work time is barrel shift and compressive deformation, the not only large carrying capacity of the elastic ball under this operating condition
And fatigue failure is less likely to occur, this makes transmission shaft medial support structures provided by the invention have bigger bearing capacity
With longer endurance life.
Detailed description of the invention
Fig. 1 is shown as the structural schematic diagram of the transmission shaft medial support structures of the present embodiment.
Fig. 2 is shown as the structural schematic diagram of the bearing block of the transmission shaft medial support structures of the present embodiment.
Fig. 3 is shown as the structural schematic diagram of the bracket of the transmission shaft medial support structures of the present embodiment.
Fig. 4 is shown as the schematic diagram of the section structure of the transmission shaft medial support structures of the present embodiment.
Drawing reference numeral explanation
100 brackets
110 frame body ellipsoid slots
200 bearing blocks
210 pedestal ellipsoid slots
300 elastic balls
400 ball bearings
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
Please refer to attached drawing.It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate
The revealed content of specification is not intended to limit the invention enforceable so that those skilled in the art understands and reads
Qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size,
It does not influence still fall in disclosed technology contents under the effect of present invention can be generated and the purpose that can reach
It obtains in the range of capable of covering.Meanwhile cited such as "upper", "lower", "left", "right", " centre " and " one " in this specification
Term, be merely convenient to being illustrated for narration, rather than to limit the scope of the invention, the change of relativeness or
Adjustment, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
As shown in Figures 1 to 4, the transmission shaft medial support structures of the present embodiment, comprising: the bracket 100 of fixed setting, together
Axis is installed on the bearing block 200 of the inside of bracket 100, there is radial clearance between bearing block 200 and bracket 100, and ball bearing 400 is pacified
Inside bearing block 200；
The inner peripheral surface of bracket 100 is equipped at least three frame body ellipsoid slots 110 being recessed outward, all frame body ellipsoids
Slot 110 is arranged circumferentially along the inner peripheral surface of bracket 100；
The outer circumference surface of bearing block 200 is equipped at least three pedestal ellipsoid slots 210 being recessed inwardly, and all pedestals are ellipse
Ball groove 210 is arranged circumferentially along the outer circumference surface of bearing block 200；
All frame body ellipsoid slots 110 are identical as all quantity of pedestal ellipsoid slot 210, size is identical and position one by one
It is corresponding；
The long axis direction of each frame body ellipsoid slot 110 and the axis parallel of bracket 100；Each pedestal ellipsoid slot 210
The axis parallel of long axis direction and bearing block 200；Each frame body ellipsoid slot 110 and corresponding pedestal ellipsoid slot 210, which are constituted, to be held
Chamber is set, is equipped with an elastic ball 300 in each chamber resettling；Along the radial direction of bracket 100, each elastic ball 300 is corresponding
It is compressed in chamber resettling by interference.
In the present embodiment, the ontology and bearing block 200 of bracket 100 are circular ring shape.Frame body ellipsoid slot 110 is to be set to branch
The groove of semiellipse spherical shape on the inner peripheral surface of frame 100；Pedestal ellipsoid slot 210 is the outer circumference surface for being set to bearing block 200
On semiellipse spherical shape groove.
Transmission shaft medial support structures of the invention in use, automobile segmented transmission shaft is installed in ball bearing 400, according to
By elastic ball 300 by the seat being recessed inwardly on the frame body ellipsoid slot 110 and bearing block 200 that are recessed outward on bracket 100
Rolling and compressive deformation mode in the chamber resettling of the composition of body ellipsoid slot 210 can bear to make from automobile segmented transmission shaft
Axial force, radial force, peripheral force and swing square realize that the axial displacement that transmission shaft medial support structures should have is slow
Punching, radial positioning buffering, circumferentially positioned buffering and swing position the function of buffering；By the elastic ball for replacing different hardness
300, so that it may adjust the deformation displacement and rigidity numerical value of transmission shaft medial support structures, easily to adapt to even optimize
Different size of displacement and pivot angle range and Vibrant buffer effect, this feature required for transmission shaft medial support structures not only may be used
Reach the requirement of comfort target easily to meet damping and the noise reduction effect of transmission shaft medial support structures, and to pass
The overall structure of moving axis medial support structures is simpler, be easy exploitation, cost is relatively low.
When transmission shaft medial support structures are by responsive to axial force from transmission shaft, this axial force passes through ball bearing
400 pass to bearing block 200, and the pedestal ellipsoid slot 210 on bearing block 200 drives elastic ball 300 in the length of pedestal ellipsoid slot 210
Axis direction roll, due to bracket 100 be it is fixed by automobile chassis, the frame body ellipsoid slot 110 on bracket 100 is to elastic ball
300 generate barrier effects, elastic ball 300 occur compressive deformation, until the compressive deformation drag of elastic ball 300 can balance by
Axial force until.At this point, elastic ball 300 rolls and the axial distance of compressive deformation is exactly the axial position of transmission shaft intermediate supports
It moves, elastic ball 300 rolls and axial drag when compressive deformation with the slope of axial displacement change curve is exactly among transmission shaft
The axial rigidity of support construction, since elastic ball 300 is by the frame body ellipsoid slot 110 being recessed outward and axis on bracket 100
The long axis direction in the chamber resettling that the pedestal ellipsoid slot 210 being recessed inwardly on seat 200 is constituted along frame body ellipsoid slot 110 is held to roll
Dynamic and compressive deformation, while meeting biggish axial displacement required for transmission shaft medial support structures, this axial rigidity
Size and variation tendency also can easily meet design requirement.
When transmission shaft medial support structures are acted on by the radial force from transmission shaft, this radial force passes through ball bearing
400 pass to bearing block 200, then pass to corresponding elastic ball 300 by the pedestal ellipsoid slot 210 on bearing block 200, due to
Bracket 100 be it is fixed by automobile chassis, frame body ellipsoid slot 110 on bracket 100, which generates elastic ball 300, to be stopped to make
With compressive deformation occurs for elastic ball 300, until the compressive deformation drag of elastic ball 300 can balance the radial force being subject to.
At this point, the radial distance of 300 compressive deformation of elastic ball is exactly the radial displacement of transmission shaft medial support structures, elastic ball 300 is pressed
Radial-thrust force when compression deformation is exactly the radial rigidity of transmission shaft medial support structures with the slope of radial displacement change curve, by
In elastic ball 300 be by being recessed inwardly on the frame body ellipsoid slot 110 and bearing block 200 that are recessed outward on bracket 100
Compressive deformation in the chamber resettling that pedestal ellipsoid slot 210 is constituted, in the radial displacement requirement for meeting transmission shaft medial support structures
While, the size and variation tendency of this radial rigidity also can easily meet design requirement.
When the inner ring of the ball bearing 400 of transmission shaft medial support structures is driven rotation, the steel ball of ball bearing 400 can be right
The outer ring of ball bearing 400 acts on circumferential frictional force, this circumferential frictional force passes to bearing block 200 by the outer ring of ball bearing 400,
Pedestal ellipsoid slot 210 on bearing block 200 drives elastic ball 300 is circumferential to roll, since bracket 100 is fixed not by automobile chassis
Dynamic, the frame body ellipsoid slot 110 on bracket 100 generates barrier effect to elastic ball 300, and compressive deformation occurs for elastic ball 300, directly
Until the compressive deformation drag of elastic ball 300 can balance the circumferential frictional force being subject to.At this point, the outer ring of ball bearing 400 is just
It is forced circumferential stationary, elastic ball 300 rolls and the circumferential distance of compressive deformation is exactly the circumferential direction of transmission shaft intermediate supports
Displacement, elastic ball 300 rolls and circumferential drag when compressive deformation with the slope of circumferentially displaced change curve is exactly in transmission shaft
Between support construction circumferential rigidity, since elastic ball 300 is by 110 He of frame body ellipsoid slot being recessed outward on bracket 100
Rolling and compressive deformation in the chamber resettling that the pedestal ellipsoid slot 210 being recessed inwardly on bearing block 200 is constituted, this circumferential rigidity
Size and variation tendency can easily meet design requirement.
When the ball bearing 400 of transmission shaft medial support structures, which is applied, swings square, this swings square and is passed by ball bearing 400
Bearing block 200 is passed, the pedestal ellipsoid slot 210 on bearing block 200 drives part elastic ball 300 in the length of pedestal ellipsoid slot 210
Axis direction rolls forward, partial elastic ball 300 roll backward in the long axis direction of ellipsoid slot, since bracket 100 is by automobile bottom
Disk is fixed, and the frame body ellipsoid slot 110 on bracket 100 generates barrier effect to elastic ball 300, and elastic ball 300 is pressed
Compression deformation, until the compressive deformation drag of elastic ball 300 can balance the swing square being subject to.At this point, the axis of ball bearing 400
Line is displaced relative to the pivot angle that the angle between the axis of bracket 100 is exactly transmission shaft medial support structures, 300 front and back of elastic ball
It rolls and moment of resistance when compressive deformation is exactly the pivot angle rigidity of transmission shaft intermediate supports with the slope of pivot angle displacement changing curve,
Since elastic ball 300 is by being recessed inwardly on the frame body ellipsoid slot 110 and bearing block 200 that are recessed outward on bracket 100
Pedestal ellipsoid slot 210 constitute chamber resettling in along frame body ellipsoid slot 110 long axis direction roll and compressive deformation, meeting
While required for transmission shaft medial support structures compared with big swing angle displacement, the size and variation tendency of this pivot angle rigidity also can
Easily meet design requirement.
In above-mentioned various operating conditions, elastic ball 300 is by 110 He of frame body ellipsoid slot being recessed outward on bracket 100
Simultaneously compressive deformation is rolled in the chamber resettling that the pedestal ellipsoid slot 210 being recessed inwardly on bearing block 200 is constituted, only when each
Its deformation can be just minimum when elastic ball 300 is in the center of respective accommodating cavity, so each elastic ball 300 exists always
Automatically, flexibly revert to respective accommodating cavity center trend, this feature makes transmission shaft medial support structures
The posture of middle ball bearing 400 can automatically reset, the beneficial effect is that flat when the operating of automobile segmented transmission shaft can be enhanced
Pliable and stability, further damping noise reduction and the endurance life for extending transmission shaft intermediate supports.
The diameter of the short axle of the diameter of the short axle of all frame body ellipsoid slots 110 and all pedestal ellipsoid slots 210 by
The diameter of elastic ball 300 determines, in order to accommodate the compressive deformation of elastic ball 300, the short axle of all frame body ellipsoid slots 110 it is straight
The diameter of the short axle of diameter and all pedestal ellipsoid slots 210 is all larger than the diameter of elastic ball 300, and each frame body ellipsoid slot 110
The diameter of short axle and the diameter of short axle of each pedestal ellipsoid slot 210 be 1.25 times of diameter of elastic ball 300.
The diameter of the long axis of pedestal ellipsoid slot 210 on bearing block 200 and the frame body ellipsoid slot 110 on bracket 100
The diameter of long axis is identical, and it is in running order by transmission shaft medial support structures when required maximum axial displacement determine；
The diameter of the long axis of the diameter of the long axis of each frame body ellipsoid slot 110 and each pedestal ellipsoid slot 210 is equal are as follows: elastic ball 300
1.15 times of value of diameter plus bearing block 200 unidirectional maximum axial displacement value and value.The unidirectional maximum axis of bearing block 200
To the unidirectional maximum axial string quantity of motion that shift value is exactly when segmented transmission shaft works, when segmented transmission shaft works it is unidirectional most
Big axial string momentum is determined according to applied automobile.
Contain supporting role but also the effective scroll bits for guaranteeing elastic ball 300 to not only effectively provide elastic ball 300
The depth of shifting and compressive deformation space, the depth of each frame body ellipsoid slot 110 and each pedestal ellipsoid slot 210 is elastic ball
0.35 times of 300 diameter.
Radial clearance between the bearing block 200 of circular ring shape and the bracket 100 of circular ring shape is by transmission shaft medial support structures
Required maximum radial displacement determines when work；Radial clearance between bearing block 200 and bracket 100 is elastic ball 300
0.25 times of diameter, the displacement of required maximum radial is exactly that segmented transmission shaft works when transmission shaft medial support structures work
When unidirectional maximum radial jerk value.
When transmission shaft medial support structures are in original state, it is set to by the frame body being recessed outward on bracket 100
Each elastic ball in chamber resettling that the pedestal ellipsoid slot 210 being recessed inwardly on ellipsoid slot 110 and bearing block 200 is constituted
300 are in radial interference compressive state, and the amount that each elastic ball 300 is compressed in corresponding chamber resettling by interference is elasticity
0.05 times of the diameter of ball 300；This radial interference decrement can not only eliminate the primary clearance of transmission shaft medial support structures, but also
It can be convenient elastic ball 300 to be driven by the pedestal ellipsoid slot 210 on bearing block 200 or the frame body ellipsoid slot 110 on bracket 100
Barrel shift, the size of elastic ball 300 can also be compensated by the volume that the variation of the environmental factors such as temperature is influenced and is occurred
Outer deformation, so as to enhance transmission shaft medial support structures work when reliability, regularity and stability.
Elastic ball 300 is ball.Ball is the elastic element in transmission shaft medial support structures, the rolling of ball
Displacement and compression deformation ability required linear displacement or pivot angle position when providing work for transmission shaft medial support structures
It moves, the barrel shift of ball and compressive deformation drag required line when providing work for transmission shaft medial support structures
Property rigidity or pivot angle rigidity, the numerical values recited of the parameters such as linear displacement, pivot angle displacement, linear rigidity, pivot angle rigidity with transmission
The service performances such as size, the length of endurance life, the effect of damping noise reduction of axis medial support structures bearing strength are closely bound up；
The silastic material that ball preferably uses high temperature performance stable, the rigidity numerical value of transmission shaft medial support structures is with ball
The raising of hardness and increase, reduce with the reduction of ball hardness, the deformation displacement of transmission shaft medial support structures is with rubber
The raising of ball hardness and reduce, increase with the reduction of ball hardness, adjusted in transmission shaft by the firmness change of ball
Between support construction rigidity numerical value and deformation displacement, meet transmission shaft medial support structures displacement pivot angle, bearing strength and
While endurance life requires, the damping noise reduction effect of transmission shaft medial support structures can be optimized.
In the present embodiment, the quantity of frame body ellipsoid slot 110, pedestal ellipsoid slot 210 and elastic ball 300 is six.Bearing
The inner hole of seat 200 and the outer ring of ball bearing 400 are interference fit, and the inner ring and segmented transmission shaft of ball bearing 400 are interference fitted.
The edge and bracket 100 in the notch face of each frame body ellipsoid slot 110 are arc transition；Each pedestal ellipsoid slot 210
Notch face edge and bearing block 200 be arc transition.The structure can prevent the pedestal ellipsoid slot 210 on bearing block 200
Notch face edge or the frame body ellipsoid slot 110 on bracket 100 notch face 300 surface of edge torn elastic ball and
300 surface of elastic ball causes stress raisers, the beneficial effect is that can extend the service life of elastic ball 300, Jin Eryan
The service life of long transmission shaft medial support structures.
That the present invention provides a kind of structures is simple, lasts a long time and lower-cost transmission shaft medial support structures.It compares
The alternating tensile occurred during the work time compared with the rubber ring in the transmission shaft medial support structures of the prior art and compressive deformation
For, what the elastic ball 300 in transmission shaft medial support structures provided by the invention always happened during the work time is to roll
Displacement and compressive deformation, elastic ball 300 under this operating condition not only large carrying capacity but also fatigue failure are less likely to occur, this makes
Transmission shaft medial support structures provided by the invention have bigger bearing capacity and longer endurance life
To sum up, the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (9)
1. a kind of transmission shaft medial support structures, comprising: the bracket (100) of fixed setting is coaxially installed on the bracket (100)
Inside bearing block (200), have radial clearance, ball bearing (400) between the bearing block (200) and the bracket (100)
It is internal to be installed on the bearing block (200), it is characterised in that:
The inner peripheral surface of the bracket (100) is equipped at least three frame body ellipsoid slots (110) being recessed outward, and all is described
Frame body ellipsoid slot (110) is arranged circumferentially along the inner peripheral surface of the bracket (100)；
The outer circumference surface of the bearing block (200) is equipped at least three pedestal ellipsoid slots (210) being recessed inwardly, all institutes
Pedestal ellipsoid slot (210) is stated to be arranged circumferentially along the outer circumference surface of the bearing block (200)；
All frame body ellipsoid slots (110) are identical as all quantity of the pedestal ellipsoid slot (210), size is identical and
Position corresponds；
The long axis direction of each frame body ellipsoid slot (110) and the axis parallel of the bracket (100)；
The long axis direction of each pedestal ellipsoid slot (210) and the axis parallel of the bearing block (200)；
Each frame body ellipsoid slot (110) and the corresponding pedestal ellipsoid slot (210) constitute chamber resettling, each appearance
It sets in chamber and is equipped with an elastic ball (300)；Along the radial direction of the bracket (100), each elastic ball (300) is corresponding
It is compressed in the chamber resettling by interference；
The frame body ellipsoid slot (110) is the groove for the semiellipse spherical shape being set on the inner peripheral surface of the bracket (100)；Institute
State the groove that pedestal ellipsoid slot (210) is the semiellipse spherical shape being set on the outer circumference surface of the bearing block (200)；Each institute
The diameter for stating the diameter of the long axis of frame body ellipsoid slot (110) and the long axis of each pedestal ellipsoid slot (210) is equal are as follows: the bullet
Property ball (300) diameter 1.15 times of value plus the bearing block (200) unidirectional maximum axial displacement value and value.
2. transmission shaft medial support structures according to claim 1, it is characterised in that: each frame body ellipsoid slot
(110) diameter of the short axle of the diameter of short axle and each pedestal ellipsoid slot (210) is the straight of the elastic ball (300)
1.25 times of diameter.
3. transmission shaft medial support structures according to claim 1, it is characterised in that: each frame body ellipsoid slot
(110) depth of depth and each pedestal ellipsoid slot (210) is 0.35 times of the diameter of the elastic ball (300).
4. transmission shaft medial support structures according to claim 1, it is characterised in that: the bearing block (200) with it is described
Radial clearance between bracket (100) is 0.25 times of the diameter of the elastic ball (300).
5. transmission shaft medial support structures according to claim 1, it is characterised in that: at transmission shaft medial support structures
When original state, the amount that each elastic ball (300) is compressed in the corresponding chamber resettling by interference is the bullet
0.05 times of the diameter of property ball (300).
6. transmission shaft medial support structures according to claim 1, it is characterised in that: the elastic ball (300) is rubber
Ball.
7. transmission shaft medial support structures according to claim 1, it is characterised in that: the ontology of the bracket (100) and
The bearing block (200) is circular ring shape.
8. transmission shaft medial support structures according to claim 1, it is characterised in that: the inner hole of the bearing block (200)
Outer ring with the ball bearing (400) is interference fit.
9. transmission shaft medial support structures according to claim 1, it is characterised in that: each frame body ellipsoid slot
(110) edge and the bracket (100) in notch face are arc transition；The notch face of each pedestal ellipsoid slot (210)
Edge and the bearing block (200) be arc transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710333889.9A CN107128174B (en) | 2017-05-12 | 2017-05-12 | Transmission shaft medial support structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710333889.9A CN107128174B (en) | 2017-05-12 | 2017-05-12 | Transmission shaft medial support structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107128174A CN107128174A (en) | 2017-09-05 |
| CN107128174B true CN107128174B (en) | 2019-07-09 |
Family
ID=59731710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710333889.9A Active CN107128174B (en) | 2017-05-12 | 2017-05-12 | Transmission shaft medial support structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107128174B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10157839B4 (en) * | 2001-11-24 | 2005-06-09 | Carl Freudenberg Kg | camp |
| DE10154705B4 (en) * | 2001-11-09 | 2005-07-07 | Carl Freudenberg Kg | camp |
| CN102192239A (en) * | 2011-04-20 | 2011-09-21 | 江苏钱潮轴承有限公司 | Transmission ball bearing of automobile intermediate support |
-
2017
- 2017-05-12 CN CN201710333889.9A patent/CN107128174B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10154705B4 (en) * | 2001-11-09 | 2005-07-07 | Carl Freudenberg Kg | camp |
| DE10157839B4 (en) * | 2001-11-24 | 2005-06-09 | Carl Freudenberg Kg | camp |
| CN102192239A (en) * | 2011-04-20 | 2011-09-21 | 江苏钱潮轴承有限公司 | Transmission ball bearing of automobile intermediate support |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107128174A (en) | 2017-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108458069A (en) | A kind of big damping automatic tensioner of variation rigidity | |
| CN107128174B (en) | Transmission shaft medial support structures | |
| CN103832272A (en) | Intermediate support assembly of heavy vehicle drive shaft | |
| CN207827623U (en) | Rolling cage shoe | |
| CN106352033A (en) | Variable stiffness automatic belt-tensioning device | |
| CN110454532B (en) | Nonlinear variable-stiffness composite rubber stop method and composite rubber stop | |
| CN206111974U (en) | Become rigidity automatic belt overspeed device tensioner | |
| CN203093656U (en) | Elastic bushing for vehicle suspension | |
| CN102490750A (en) | Bearing used in anti-rolling device of railway vehicle and anti-rolling device using the bearing | |
| CN210265757U (en) | Noise reduction gear | |
| CN202896212U (en) | Connection structure of stabilizer bar and bushing | |
| CN203847627U (en) | High-performance shock absorption flywheel | |
| CN202790262U (en) | Vibration-isolating cushion for automobile shock absorber | |
| CN205226061U (en) | Decelerating bearing | |
| CN204371105U (en) | Shock-resistant high-bearing roll-slide combined bearing | |
| CN101665058B (en) | Dynamic hydraulic compensating device of resilience anti-vibration wheel | |
| CN209781464U (en) | Super large diameter's low friction spherical joint bearing | |
| CN210851930U (en) | Double-torsion beam type shaft bushing | |
| CN210686802U (en) | Torsion rubber bushing with radial positioning function | |
| CN104533294B (en) | A kind of impact resistance high-mechanic roll-slide combined bearing | |
| CN203845346U (en) | Belt conveyor | |
| CN210318287U (en) | Composite bushing structure | |
| CN201530262U (en) | Dynamic hydraulic compensating device for resilience vibration reduction wheels | |
| CN202811960U (en) | Elastic cushion block used for motor damping device | |
| CN208565452U (en) | A kind of big damping automatic tensioner of variation rigidity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |