CN209586981U - A kind of connection structure of non-maintaining universal slip joint fork - Google Patents
A kind of connection structure of non-maintaining universal slip joint fork Download PDFInfo
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- CN209586981U CN209586981U CN201822233353.2U CN201822233353U CN209586981U CN 209586981 U CN209586981 U CN 209586981U CN 201822233353 U CN201822233353 U CN 201822233353U CN 209586981 U CN209586981 U CN 209586981U
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- fork
- cross axle
- universal
- yoke
- slip
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Abstract
The utility model discloses a kind of connection structure of non-maintaining universal slip joint fork, including slip yoke, candan universal joint and end tooth flange yoke, the slip yoke is the monolithic construction that the universal-joint fork made of tubing and sliding sleeve are integrated, its end is in fork configuration, fork configuration is set there are two cross pin hole, and it is flexibly connected by candan universal joint with end tooth flange yoke, the candan universal joint includes cross axle, four bearing bowls being mounted on cross axle, oil enveloping structure and sealing and dustproof circle, it is corresponding in the axial end of four axis of the cross axle to open up that there are four be not connected to mutually and the identical cylindrical chamber of size, the reasonably optimizing that the present apparatus passes through structure, efficiently solve the problems, such as the vibration abnormal sound of transmission shaft, universal joint sealing intensity is increased simultaneously, while preventing oil leak, grease is stored in inner lip, reduce lip and the diameter of axle Friction, increase oil sealing service life, play an important role to the promotion of transmission shaft bearing performance.
Description
Technical field
The utility model belongs to transmission shaft technical field, the connection structure of specifically a kind of non-maintaining slip yoke.
Background technique
For transmission shaft as the important parts for transmitting power in automotive transmission, its effect is together with gearbox, drive axle
The power of engine is passed into wheel, automobile is made to generate driving force.Automobile and engineering machinery transmission are used to spontaneous coming
Motivation, the output torque of gearbox and rotary motion are transmitted to drive axle, drive vehicle wheel rotation, and adapt to because of Uneven road
Impact, the variation of transmitting distance and angle caused by wheel moves up and down, generally by intermediate propeller shaft, inter-axle shaft and intermediate branch
Hold composition.Transmission shaft carries the power transmitting of vehicle, and power is not only passed to rear axle from engine, gearbox, is protected again
Card keeps gearbox, rear axle without damage because of overcharge.Therefore transmission shaft is the fuse of chassis system, is used to self-sacrifice
Protect the component of the high values such as gearbox and rear axle not damaged, so the normal operation of transmission shaft is extremely important.
Universal driving device is influenced due to often being travelled on complicated road by automobile, makes transmission shaft in its angle and length
It spends under continuous situation of change and transmits torque, therefore transmission shaft unbalance dynamic, universal joint and intermediate supports looseness, abnormal sound etc. often occur
Failure.Universal-joint journal and bearing wear looseness.One end of front propeller shaft and the output flange of gearbox connect, intermediate support
The crossbeam of vehicle frame is mounted in the following, compensating the micro accumulation location error generated when transmission system assembly by bearing rubber, and
Thus the radial force that transmission shaft is subject to when buffering automobile moves reduces and generates vibration.The front end of inter-axle shaft and front propeller shaft
Output flange connection, rear end is connected with drive axle, driving vehicle wheel rotation, and is adapted to by the flexible of free-sliding spline pair because of road
The variation of transmitting distance and angle caused by face is uneven, wheel moves up and down.
The connection structure of existing slip yoke is primarily present the following improvements that need: 1, vibration, abnormal sound etc. are
Transmission shaft common failure mode solves the problems, such as that vibration, abnormal sound can increase vehicle comfort level, improves the transmission shaft service life, increases and care for
Objective satisfaction.Can be connect by slip yoke spline with the connection of gearbox or flange york ring flange connection, when connection looseness or
When failure, abnormal sound can be generated.The slight sound of movement of transmission shaft is in quality audit allowed band, but abnormal sound of movement will
It carries out the analysis of causes and excludes.If abnormal sound reason is not found, its development of leaving down, and be may result in connection when serious and is lost
Effect, the dangerous situations such as transmission shaft falls off, vehicle rollover.Therefore, it is necessary to carry out analysis exclusion, the generation of safety accident is avoided.2,
Transmission shaft itself is internal, and crucial components are exactly universal-joint cross trunnion, and the superiority and inferiority of cross axle performance decides non-constant speed drive
The service performance of axis.Joint failure occupies more than half in transmission shaft failure mode, therefore to universal joint service performance
Research, the raising for the overall performance of transmission shaft have very important significance.When existing portion dress universal joint and fork type component, need by
Four bearing bowls of universal joint are successively removed successively to be fitted on cross axle again.Why shaft universal-joint fails, the reason of 80%
For cross axle serious wear, cause to fail.Particularly with non-maintaining structure cross axle if there is the above problem, will cause ten
The initial failure of word axis, specific manifestation form are ablation.3, demand of the user to auto parts and components maintenance-free performance be also increasingly
Strongly.Non-maintaining components also come into being, such as non-maintaining bearing, non-maintaining cross axle, non-maintaining transmission shaft etc..User is more
Can what be paid attention in be whether non-maintaining product is durable, accomplish really non-maintaining." fuse " and core as transmission shaft
How component improves the most important thing that the non-maintaining universal joint service life is transmission shaft design.
Utility model content
Purpose of the utility model is to solve problems present on the above-mentioned prior art, provide a kind of non-maintaining universal
The connection structure of slip yoke is saved, the present apparatus efficiently solves the problems, such as the vibration abnormal sound of transmission shaft by the reasonably optimizing of structure,
Universal joint sealing intensity is increased simultaneously, while preventing oil leak, grease is stored in inner lip, reduces rubbing for lip and the diameter of axle
It wipes, increases oil sealing service life, one step of the performance boost of universal joint, improve the service life of non-maintaining universal joint,
It plays an important role to the promotion of transmission shaft bearing performance.
To achieve the above objectives, the present invention adopts the following technical solutions: a kind of company of non-maintaining universal slip joint fork
Binding structure, including slip yoke, candan universal joint and end tooth flange yoke, the slip yoke be universal-joint fork make of tubing and
The monolithic construction that sliding sleeve is integrated, end are in fork configuration, and fork configuration is set there are two cross pin hole, and passes through cross
Universal joint is flexibly connected with end tooth flange yoke, and the candan universal joint includes cross axle, four bearings being mounted on cross axle
Bowl, oil enveloping structure and sealing and dustproof circle, in the axial end of four axis of the cross axle it is corresponding open up there are four not being connected to mutually and
The identical cylindrical chamber of size, the cylindrical chamber include cylindrical cavity and conical cavity, and the conical cavity is arranged in cylindrical cavity
Bottom, sealing and dustproof snare mounted in oil seal lip close cross axle inside, the oil enveloping structure include an outer lip
With two inner lips, it is formed with grease accommodation space between two inner lips, for reducing the axis of oil seal lip and cross axle
The friction of diameter；The dust cover is cirque structure, and dust cover is fitted on the sliding sleeve, and is sleeved on fork configuration and cunning
The contact surface of the junction of dynamic set, the slip yoke and dust cover is in a smooth cirque structure；In the fork-shaped knot of slip yoke
Blanking cover is additionally provided at the axis hole of structure, the blanking cover includes plugging cover body and cover, and gas vent is provided in plugging cover body, described
Cover is covered on gas vent and is connect by screw with plugging cover body, and the plugging cover body excircle is provided with ring along its circumferential direction
Shape protrusion.
It is further improved this programme, the opening inner ring edge of the cylindrical chamber is provided with end chamfer.
It is further improved this programme, the depth of the cylindrical chamber is less than the cross axle along cylindrical chamber length direction
The 1/3 of entire length.
It is further improved this programme, the depth of the cylindrical cavity is greater than the depth of the conical cavity.
It is further improved this programme, the gas vent is provided with multiple.
It is further improved this programme, the annular protrusion is made of rubber material.
It is further improved this programme, is additionally provided with limiting stand in the plugging cover body on the outside of annular protrusion.
It is further improved this programme, the thickness of the outer lip is greater than the thickness of the inner lip.
Beneficial effect
The present apparatus is efficiently solved the problems, such as the vibration abnormal sound of transmission shaft, is increased simultaneously by the reasonably optimizing of structure
Universal joint sealing intensity, while preventing oil leak, grease is stored in inner lip, reduces the friction of lip and the diameter of axle, increases oil
Service life is sealed, one step of the performance boost of universal joint, improves the service life of non-maintaining universal joint, it is whole to transmission shaft
The promotion of axis performance plays an important role.Specific integrated structure is analyzed as follows:
Circumferencial direction is interfered during rotation for one, existing slip yoke dust cover and gearbox dust cover, generates friction
Sound.In press fitting, vertically and horizontally contact area is uneven with slip yoke for dust cover in the prior art, and vertical direction connects
Contacting surface product is too small, ellipse occurs after causing dust cover to be pressed, the utility model makes by optimizing to slip yoke blahk structure
The machined surface of press fitting dust cover becomes a uniform annulus, then carries out press fitting dust cover, deformation no longer occurs.
Secondly, original cross axle structure be through-hole, then grease can be pressurized and concentrate that axis installed to the end when being pressed
It holds in bowl, other three bearing bowls is caused premature wear failure occur because of oil starvation rouge.After cross axle is changed to blind hole structure, grease
It can not then generate and flee phenomenon, the fat content and pressure consistency of each universal joint bearing bowl more preferably guarantee, installation circlip is primary
Qualification rate is higher, can be effectively reduced universal joint because of the risk of oil starvation rouge early stage erosion and wear.
Thirdly, by being optimized to oil enveloping structure, realize and increase Sealing Performance of Oil Seal.Design two inner lips, outside
It is a thicker outer lip.After grease crosses inner lip, pressure greatly reduces, and along with thicker outer lip seals, protects
The grease that card grease will not be leaked, and be stored between two inner lips also can be reduced the friction of oil seal lip Yu the cross axle diameter of axle,
Frictional heat is reduced, is killed two birds with one stone.
Four, in the present solution, by the reasonably optimizing of the structure to blanking cover, while there is the dust-proof and dual function that discharges water,
The service life of transmission shaft, the setting of annular protrusion can further strengthen the effect of dust seal between extension slip yoke.
Detailed description of the invention
In order to illustrate more clearly of utility model embodiment or technical solution in the prior art, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is the structural schematic diagram of the utility model connection structure；
Fig. 2 is the side view of dust cover in the utility model；
Fig. 3 is the structural schematic diagram of the contact surface of slip yoke and dust cover in the prior art；
Fig. 4 is the structural schematic diagram of the contact surface of slip yoke and dust cover in the utility model；
Fig. 5 is candan universal joint structural schematic diagram in the utility model；
Fig. 6 is the cross-sectional view of cross axle in the utility model；
Fig. 7 is the structural schematic diagram of oil enveloping structure in the utility model；
Marked in the figure: 1, slip yoke, 1-1, contact surface, 2, candan universal joint, 2-1, cross axle, 2-2, bearing bowl, 2-3,
Oil enveloping structure, 2-4, sealing and dustproof circle, 3, dust cover, 4, blanking cover, 5, end tooth flange yoke, 211, cylindrical chamber, 231, outer lip,
232, inner lip.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which the technical solution of the utility model and advantage is more clearly understood
The utility model is further elaborated.
It is as shown in the figure: a kind of connection structure of non-maintaining universal slip joint fork, including slip yoke 1, candan universal joint 2 and end
Tooth flange yoke 5, the slip yoke 1 are the monolithic construction that the universal-joint fork made of tubing and sliding sleeve are integrated, end
Portion is in fork configuration, and fork configuration is set there are two cross pin hole, and is flexibly connected by candan universal joint 2 with end tooth flange yoke 5.
Make a concrete analysis of the structure of candan universal joint 2: candan universal joint 2 includes cross axle 2-1, is mounted on cross axle 2-1
Four bearing bowl 2-2, oil enveloping structure 2-3 and sealing and dustproof circle 2-4, it is right in the axial end of four axis of the cross axle 2-1
It is not connected to mutually there are four should opening up and the identical cylindrical chamber 211 of size, the cylindrical chamber 211 includes cylindrical cavity and taper
The depth of chamber, the cylindrical cavity is greater than the conical cavity depth.Cylindrical chamber 211 is blind hole structure, and the conical cavity is set
It sets in the bottom of cylindrical cavity, the opening inner ring edge of the cylindrical chamber 211 is provided with end chamfer.The cylindrical chamber
211 depth be less than the cross axle 2-1 along 211 length direction of cylindrical chamber entire length 1/3.Cross axle in this programme
2-1 is blind hole structure, and grease, which can not then generate, flees phenomenon, and the fat content and pressure consistency of each bearing bowl 2-2 is more preferably protected
Card, installation circlip first-time qualification rate is higher, can be effectively reduced universal joint because of the risk of oil starvation rouge early stage erosion and wear.Relative to
Existing through-hole cross axle, the processing capacity of blind hole cross axle is smaller, and intensity is higher, and the optimization of the structure can effectively improve ten thousand
To section service life.
Sealing and dustproof circle 2-4 is sleeved on the inside of the close cross axle 2-1 of oil enveloping structure 2-3, and oil enveloping structure 2-3 includes one
A outer lip 231 and two inner lips 232, the thickness of the outer lip 231 are greater than the thickness of the inner lip 232；Due to oil
Seal structure 2-3 and the cross axle 2-1 diameter of axle are interference fit, and with the rotation of transmission shaft, oil enveloping structure 2-3 and cross axle 2-1 are sent out
Raw relative rotation and with friction, friction temperature gradually accumulates to a certain extent, and oil enveloping structure 2-3 itself has softening transform,
This directly results in oil sealing sealing strength reduction, and when temperature is raised to certain numerical value, intracavitary air pressure is greater than oil sealing to the pressure of oil sealing
When the intensity of itself, gas can be excluded from oil sealing and diameter of axle mating surface, and while exhaust, grease can be brought out a part,
With the accumulation of time, grease is just slowly leaked out.In the present solution, two inner lips 232 of design, outside are one thicker outer
Lip 231.After grease crosses inner lip 232, pressure greatly reduces, and along with thicker outer lip 231 seals, guarantees grease
The grease that will not be leaked, and store between two inner lips 232 also can be reduced the friction of oil seal lip Yu the cross axle 2-1 diameter of axle,
Frictional heat is reduced, is killed two birds with one stone.In the present solution, increasing universal joint sealing intensity, while preventing oil leak, grease is stored in two
Between a inner lip 232, the friction of lip and the diameter of axle is reduced, increases oil sealing service life, the performance boost of universal joint
One step plays an important role to the promotion of transmission shaft bearing performance.
Make a concrete analysis of the structure of slip yoke 1 and dust cover 3: dust cover 3 is cirque structure, and dust cover 3 is fitted in described
On sliding sleeve, and it is sleeved on the junction of fork configuration and sliding sleeve, the contact surface 1-1 of the slip yoke 1 and dust cover 3 is in one
Smooth cirque structure；The prior art is as shown in figure 3, dash area is contact surface 1-1, slip yoke 1 and anti-in the prior art
The contact surface 1-1 of dust hood 3, the contact area of horizontal direction are much larger than the contact area of vertical direction, and original dust cover 3 makes
With occurring abnormal sound in the process, it is found that its outer circle is oval.This is because due to both vertically and horizontally contacting when press fitting
Area is different, leads to discontinuity, so that dust cover 3 deforms after press fitting.And interrupted cut is processed as before improving, and horizontal
Direction processing capacity is big, and cutter consumption is big and blade easily damages；Processing end face flatness be not easy to guarantee, be pressed dust cover
Gap is easy to appear with end face after 3.Improved technique optimizes blahk structure, becomes the machined surface for being pressed dust cover 3
At a uniform circular ring structure, then press fitting dust cover 3 is carried out, will not occur deformation again.
It makes a concrete analysis of the structure of blanking cover 4: being additionally provided with blanking cover 4, the blanking cover at the axis hole of the fork configuration of slip yoke 1
4 include plugging cover body and cover, and the cover is covered on gas vent and is connect by screw with plugging cover body, the blanking cover sheet
Its circumferential direction is provided with annular protrusion on body.It is provided with exhaust clearance between plugging cover body and cover, is arranged in plugging cover body
There is gas vent.The annular protrusion is set as 2 or more, and is made of rubber material, preferentially uses nitrile rubber material.
The purpose that annular protrusion is arranged herein is to further strengthen the dust seal effect of dustproof cover, prevent external dust from entering to
Grease is polluted, internal grease spilling is also prevented from, is additionally provided with limiting stand in the plugging cover body on the outside of annular protrusion, the limiting stand
Play the role of limit at the axis hole of slip yoke 1 and fixes and further strengthen sealing.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation be not intended to limit the utility model although the utility model has been disclosed with preferred embodiment as above, it is any ripe
Professional and technical personnel is known, is not being departed within the scope of technical solutions of the utility model, when in the technology using the disclosure above
Hold the equivalent embodiment made a little change or be modified to equivalent variations, but all without departing from technical solutions of the utility model
Hold, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention, still
It is within the scope of the technical solutions of the present invention.
Claims (5)
1. a kind of connection structure of non-maintaining universal slip joint fork, including slip yoke (1), candan universal joint (2) and end tooth flange
It pitches (5), the slip yoke (1) is the monolithic construction that the universal-joint fork made of tubing and sliding sleeve are integrated, end
In fork configuration, fork configuration is set there are two cross pin hole, and even by candan universal joint (2) and end tooth flange yoke (5) activity
It connects, the candan universal joint (2) includes cross axle (2-1), four bearing bowls (2-2), oil sealings being mounted on cross axle (2-1)
Structure (2-3) and sealing and dustproof circle (2-4), it is characterised in that: correspondence is opened in the axial end of four axis of the cross axle (2-1)
If the cylindrical chamber (211) includes cylindrical cavity and taper there are four not being connected to and the identical cylindrical chamber of size (211) mutually
The bottom of cylindrical cavity is arranged in chamber, the conical cavity, and sealing and dustproof circle (2-4) is sleeved on the close cross axle of oil seal lip
The inside of (2-1), the oil enveloping structure (2-3) includes an outer lip (231) and two inner lips (232), in two epipharynxs
It is formed with grease accommodation space between mouth (232), the friction of the diameter of axle for reducing oil seal lip and cross axle (2-1)；It is dust-proof
Covering (3) is cirque structure, and dust cover (3) is fitted on the sliding sleeve, and is sleeved on the connection of fork configuration and sliding sleeve
Locate, the contact surface (1-1) of the slip yoke (1) and dust cover (3) is in a smooth cirque structure；Fork in slip yoke (1)
It is additionally provided at the axis hole of shape structure blanking cover (4), the blanking cover (4) includes plugging cover body and cover, is provided in plugging cover body
Gas vent, the cover are covered on gas vent and are connect by screw with plugging cover body, and the plugging cover body excircle is along it
Circumferentially it is provided with annular protrusion.
2. a kind of connection structure of non-maintaining universal slip joint fork as described in claim 1, it is characterised in that: the cylinder chamber
The opening inner ring edge of body (211) is provided with end chamfer.
3. a kind of connection structure of non-maintaining universal slip joint fork as described in claim 1, it is characterised in that: the cylinder chamber
The depth of body (211) be less than the cross axle (2-1) along cylindrical chamber (211) length direction entire length 1/3.
4. a kind of connection structure of non-maintaining universal slip joint fork as described in claim 1, it is characterised in that: the cylinder
The depth of chamber is greater than the depth of the conical cavity.
5. a kind of connection structure of non-maintaining universal slip joint fork as described in claim 1, it is characterised in that: the outer lip
(231) thickness is greater than the thickness of the inner lip (232).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822233353.2U CN209586981U (en) | 2018-12-28 | 2018-12-28 | A kind of connection structure of non-maintaining universal slip joint fork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822233353.2U CN209586981U (en) | 2018-12-28 | 2018-12-28 | A kind of connection structure of non-maintaining universal slip joint fork |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209586981U true CN209586981U (en) | 2019-11-05 |
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ID=68350009
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822233353.2U Active CN209586981U (en) | 2018-12-28 | 2018-12-28 | A kind of connection structure of non-maintaining universal slip joint fork |
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| CN (1) | CN209586981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860220A (en) * | 2021-09-26 | 2021-12-31 | 中车长春轨道客车股份有限公司 | Transportation assembly vehicle for large parts of motor train unit compartment |
-
2018
- 2018-12-28 CN CN201822233353.2U patent/CN209586981U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113860220A (en) * | 2021-09-26 | 2021-12-31 | 中车长春轨道客车股份有限公司 | Transportation assembly vehicle for large parts of motor train unit compartment |
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