CN203614569U - Engine coupling assembly and engine provided with same - Google Patents
Engine coupling assembly and engine provided with same Download PDFInfo
- Publication number
- CN203614569U CN203614569U CN201320681129.4U CN201320681129U CN203614569U CN 203614569 U CN203614569 U CN 203614569U CN 201320681129 U CN201320681129 U CN 201320681129U CN 203614569 U CN203614569 U CN 203614569U
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- China
- Prior art keywords
- bearing shell
- axle journal
- coupling assembly
- layer
- coupling
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Abstract
The utility model discloses an engine coupling assembly and an engine provided with the same. The engine coupling assembly comprises a crank shaft, coupling bushes and a bearing bush, wherein the crank shaft comprises a shaft neck, and an oil hole is formed in the shaft neck; the coupling bushes are nested on the shaft neck; the bearing bush is nested on the shaft neck and located between the shaft neck and the coupling bushes; an oil outlet hole corresponding to the oil hole is formed in the bearing bush; the bearing bush is connected with the shaft neck, and the outer peripheral surface of the bearing bush is propped against the inner peripheral surfaces of the coupling bushes; and the crank shaft and the bearing bush can rotate relative to the coupling bushes. According to the engine coupling assembly, the bearing bush is nested on the shaft neck, so that the coupling bushes only have friction with the bearing bush, all that is required is to replace the coupling bushes and the bearing bush during replacement, the shaft neck is not required to be polished, accordingly, the replacement steps are reduced, the manufacturing and maintenance efficiency is improved, and the cost is reduced.
Description
Technical field
The utility model relates to technical field of engines, more specifically, relates to a kind of motor coupling assembly and has its motor.
Background technique
The coupling watt of conventional engines accessory, it is the strength member in motor, in the time that coupling watt is applied on bent axle, it is connecting engine cylinder-body and bent axle, in the time that coupling watt is applied on connecting rod, it is connecting piston and bent axle, its acting in conjunction is to support bent axle, change the to-and-fro motion of piston into bent axle rotatablely move by connecting rod, and the power acting on piston is passed to bent axle with output power, coupling watt at work, except bearing the pressure that bent axle produces, also will be born the inertial force of vertical and horizontal.Therefore, coupling watt is worked under a complicated stress phase.In general, coupling watt mostly is steel part, part by two semicircles forms, more precisely, coupling watt is mounted in the sliding bearing on motor axle journal, when assembling, be pressed abd fixed on engine cylinder-body by FE Tiler and bolt, its material is to add wear-resisting Babbitt by watt back of the body of steel to form, and same model motor will do the coupling watt of five kinds of specifications.
At present, in order to increase the service life, coupling watt mainly selects compressive strength and fatigue strength is high, friction factor is low, wear resistance is good, antiseizing, embedding Tibetan property and compliance is good, thermal expansion coefficient is little, thermal conductivity is good, lubricity is good, prepared by good corrosion resistance and the good material of manufacturability.
In general, the bent axle of motor and cylinder body are fixed in Boring mill bearing by coupling watt, axle journal contacts transferring power with coupling tiling, the connecting rod of motor contacts transferring power by coupling watt with axle journal, after operation a period of time, coupling watt becomes large with axle journal because friction makes gap, thereby affects the power of motor, has increased fuel consumption.Now, need to change according to wear extent the coupling watt of appropriate size, polishing axle journal reaches matching requirements, when bent axle polishing exceedes the bent axle that need more renew when a certain amount of, not only wastes time and energy, and requires higher for processing technology.
Model utility content
The utility model is intended to one of solve the problems of the technologies described above at least to a certain extent.
For this reason, an object of the present utility model be to propose a kind of change simple, make efficiency is high and lower-cost motor coupling assembly.
Another object of the present utility model is to propose a kind of motor with above-mentioned motor coupling assembly.
According to the motor coupling assembly of the utility model first aspect, comprising: axle journal, described axle journal is provided with oilhole; Coupling watt, described coupling watt is set on described axle journal; And bearing shell, described axle bush sleeve is located on described axle journal and between described axle journal and described coupling watt, described bearing shell is provided with the oil outlet corresponding with described oilhole, described bearing shell be connected with described axle journal and the outer circumferential face butt of described bearing shell described in the inner peripheral surface of coupling watt, described axle journal and described bearing shell are watt rotatable with respect to described coupling.
According to motor coupling assembly of the present utility model, by sheathed bearing shell on axle journal, make coupling watt with axle journal spaced apart, motor coupling assembly in the running, coupling watt only rubs with bearing shell, and can not may wear to axle journal, therefore, in the time more reengining coupling assembly, only need to change coupling watt and bearing shell, and without again axle journal being polished, thereby exchonge step effectively reduced, improve preparation and maintenance efficiency, reduced cost.
In addition, can also there is following additional technical characteristics according to motor coupling assembly of the present utility model:
According to an embodiment of the present utility model, the cross section of described bearing shell is formed as annular, described bearing shell and described axle journal interference fit.
According to an embodiment of the present utility model, described bearing shell comprises two auxiliary sections, and two described auxiliary sections are located at respectively on the outer circumferential face of described axle journal and coordinate and form described bearing shell.
According to an embodiment of the present utility model, the symmetrical configuration of two described auxiliary sections, and the radius of curvature of described auxiliary section is less than the radius of curvature of described axle journal.
According to an embodiment of the present utility model, the cross section of each described auxiliary section is formed as respectively U-shaped, and the distance of the opening of each described auxiliary section is than the little 0.5-1.5mm of the diameter of described axle journal.
According to an embodiment of the present utility model, the thickness of described bearing shell is 2.5-4mm.
According to an embodiment of the present utility model, described bearing shell comprises steel layer, middle close binder and anti-attrition layer from inside to outside successively, and wherein, the thickness of described middle close binder is 0.03mm, and the thickness of described anti-attrition layer is 0.08-0.4mm.
According to an embodiment of the present utility model, described anti-attrition layer is babbit layer or acieral layer, and the thickness of described babbit layer or acieral layer is 0.08-0.3mm.
According to an embodiment of the present utility model, described anti-attrition layer is copper lead alloy layer, and the thickness of described copper lead alloy layer is 0.25-0.4mm.
According to the motor of the utility model second aspect, comprise the motor coupling assembly described in above-described embodiment.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming embodiment's description obviously and easily, wherein:
Fig. 1 is according to the structural representation of the utility model embodiment's motor coupling assembly.
Reference character:
100: motor coupling assembly; 10: axle journal; 20: coupling watt; 30: bearing shell; 31: oil outlet; 32: auxiliary section.
Embodiment
Describe embodiment of the present utility model below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment who is described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, orientation or the position relationship of the indication such as term " length ", " interior ", " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than indicate or imply that the device of indication or element must have specific orientation, construct and operation with specific orientation, therefore can not be interpreted as restriction of the present utility model.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
First describe in detail by reference to the accompanying drawings below according to the utility model first aspect embodiment's motor coupling assembly 100.
As shown in Figure 1, comprise bent axle (scheming not shown), coupling watts 20 and bearing shell 30 according to the utility model embodiment's motor coupling assembly 100.Particularly, bent axle comprises axle journal 10, and axle journal 10 is provided with oilhole (scheming not shown).Coupling watts 20 is set on axle journal 10, bearing shell 30 be set on axle journal 10 and axle journal 10 be coupled between watts 20, bearing shell 30 is provided with the oil outlet corresponding with oilhole 31.Bearing shell 30 is connected with axle journal 10 and the inner peripheral surface of the outer circumferential face butt coupling of bearing shell 30 watts 20, and bent axle and bearing shell 30 are rotatable with respect to coupling watts 20.
According to the utility model embodiment's motor coupling assembly 100, by sheathed bearing shell 30 on axle journal 10, make coupling watts 20 and axle journal 10 spaced apart, motor coupling assembly 100 in the running, coupling watts 20 rubs with bearing shell 30, and can not may wear to axle journal 10, therefore, in the time more reengining coupling assembly 100, only need to change coupling watts 20 and bearing shell 30, and without again axle journal 10 being polished, thereby exchonge step effectively reduced, improve preparation and maintenance efficiency, reduced cost.
Particularly, bearing shell 30 does relative motion with respect to coupling watts 20, between bearing shell 30 and coupling watts 20, can be limited with gap, this gap is communicated with the oil outlet 31 on oilhole, bearing shell 30 on axle journal 10, in gap, contain lubricant film, coupling watts 20 can be done relative movement by lubricant film with bearing shell 30, thereby has reduced fretting wear, has extended working life.
It should be noted that, can be crankshaft journal according to the utility model embodiment's axle journal 10, also can be rod journal, correspondingly, in the time that axle journal 10 is crankshaft journal, coupling watts 20 be the engine crankshaft bush coordinating with crankshaft journal, and in the time that axle journal 10 is rod journal, being coupled watts 20 is the connecting rod bearing shell coordinating with rod journal.The cooperating structure of coupling watts 20 on crankshaft journal and rod journal is appreciated that to those skilled in the art and easily realizes, therefore repeat no more.
Concrete mounting type for bearing shell 30 on axle journal 10 does not do specific (special) requirements, and alternatively, according to an embodiment of the present utility model, the cross section of bearing shell 30 is formed as annular, bearing shell 30 and axle journal 10 interference fit.That is to say, be formed as annular bearing shell 30 and be set on axle journal 10, the sectional dimension of bearing shell 30 is less than the sectional dimension of axle journal 10.Thus, bearing shell 30 can firmly be fitted on axle journal 10, and running together with axle journal 10, has avoided bearing shell 30 on axle journal 10, install lax and slippage occurs, and then may wear to the situation generation of axle journal 10.
Further, according to an embodiment of the present utility model, bearing shell 30 comprises that auxiliary section 32,32, two of two auxiliary sections is located at respectively on the outer circumferential face of axle journal 10 and coordinates and forms bearing shell 30.That is to say, two auxiliary sections 32 cooperations are formed as annular bearing shell 30, and are arranged on the outer circumferential face of axle journal 10.Bearing shell 30 is designed to two auxiliary sections 32, not only easy to assembly, and can make in the time that bearing shell 30 damages, only need to change the auxiliary section 32 being damaged, and without whole bearing shell 30 is all replaced, thereby effectively reduce renewal cost, improve the utilization ratio of assembly.
Be understandable that, the structure of two auxiliary sections 32 and size can be identical, also can be different.Alternatively, according to an embodiment of the present utility model, the symmetrical configuration of two auxiliary sections 32, and the radius of curvature of auxiliary section 32 is less than the radius of curvature of axle journal 10.Thus, two auxiliary sections 32 coordinate the radius of curvature of the bearing shell 30 forming to be less than the radius of curvature of axle journal 10, make bearing shell 30 to realize interference fit with axle journal 10.
Particularly, can require to determine according to the actual motion of motor coupling assembly 100 for bearing shell 30 and the degree of axle journal 10 interference fit.Be understandable that, the difference between the radius of curvature of axle journal 10 and the radius of curvature of auxiliary section 32 can not be excessive, also can not be too small.In the time that difference is too small, what can make that bearing shell 30 that two auxiliary sections 32 form can not be firm is fitted on axle journal 10 and slippage easily occurs, in the time that difference is excessive, the size that can make two auxiliary sections 32 is relatively too small and the difficulty of assembling is strengthened, or even cannot be arranged on axle journal 10.
Therefore, from the viewpoint of steadiness and the complexity two of installing, alternatively, according to an embodiment of the present utility model, the cross section of each auxiliary section 32 is formed as respectively U-shaped, and the distance of the opening of each auxiliary section 32 is than the little 0.5-1.5mm of the diameter of axle journal 10.The difference that is the radius of curvature of axle journal 10 and the radius of curvature of auxiliary section 32 is 0.25-0.75mm.Thus, auxiliary section 32 can either relatively easily be arranged on axle journal 10, can firmly be fitted on axle journal 10 in the mode of interference fit again.
Consider that motor is in operation process, between the mounting hole (being bearing hole) of coupling watts 20, bearing shell 30, axle journal 10, lubricant film and motor coupling assembly 100, can form complicated elastohydrodynamics system, wherein, coupling watts 20 is equivalent to sliding bearing.Axle journal 10, in a bearing hole that has a certain interval, is subject to the pressure of explosion motion for the relative rotation in cylinder, lubricant oil is brought in gap, and produced rotation effect.Meanwhile, pressure of explosion makes axle journal do radial motion, produces extrusion effect.Rotatablely move and formed elastic fluid dynamic pressure oil film with compressional movement acting in conjunction.The external load equal and opposite in direction that its pressure and bearing are suffered, opposite direction, and (crank angle) and change in time.In a work cycle of motor, the sealing track of a variation is walked out at axle journal 10 centers, and oil slick thickness and pressure thereof are all changing, and has determined reliability and the durability of bearing.
Wherein, the coupling assembly 100 that bearing shell 30 is installed can characterize with its bearing characteristic number (Soxhlet number) SO.Its representation is: S0=p Ψ
2/ bD η ω;
Wherein: Ψ=(R-r)/r;
ω=ωL+ωJ+ωLP；
P---bearing load (kgf);
Ψ---gap;
B---bearing width (cm);
D---bearing inner surface diameter (cm);
ω---axle journal effective angle speed (s
-1);
ω L---bearing angular velocity;
ω J---journal angle speed;
ω LP---minimum oil film location point angular velocity;
The dynamic viscosity of η---lubricant oil.
Known, loading capacity of oil film and b and long-pending being directly proportional of D, be inversely proportional to the quadratic power in gap.And the bearing capacity of oil film has embodied the performance condition of motor coupling assembly 100 to a certain extent.
Consider in the time that half bearing thickness changes, the width of bearing, inner surface diameter and gap can corresponding changes, then have influence on the overall performance of motor coupling assembly 100.The thickness of bearing shell 30 can specifically be determined according to the type of real engine.Alternatively, according to an embodiment of the present utility model, the thickness of bearing shell 30 is 2.5-4mm.For heavy Engine Series, as diesel engine, the thickness of bearing shell 30 is chosen as 2.5-4mm.For the motor of thin, for example petrol engine, the thickness of its bearing shell 30 is relatively smaller, is chosen as 1.5-3mm.
Further, the bearing shell 30 that prepared by different materials has very large difference in performance.In order to improve the performance of bearing shell 30, alternatively, according to an embodiment of the present utility model, bearing shell 30 comprises steel layer, middle close binder and anti-attrition layer from inside to outside successively, and wherein, the thickness of middle close binder is 0.03mm, and the thickness of anti-attrition layer is 0.08-0.4mm.
Particularly, the bimetallic material of steel-bearing metal of manufacturing by technological methodes such as casting, powder sintered and rolling calenderings, through drawing and machining, power on alloy-layer surface subsequently (painting) plates or physical sputter anti-attrition layer, can form the bearing shell 30 of three-decker.Certainly the structure of bearing shell 30 is not limited only to therewith, can determine according to actual requirement, for example, also can adopt clean steel to make bearing shell 30.Wherein, it is the Fine Steel Casting iron of 0.03-0.25% that the steel backing material of the bent axle thin-wall bearing shell 30 of internal-combustion engine can adopt carbon content, and the carbon content of the steel backing material of the high performance bearing bush of High speed and heavy duty diesel engine can reach 0.17-0.25%.
For high-speed high-power motor, its bearing must have enough fatigue strength.Wherein, fatigue strength refers to that the ability of fatigue cracking does not occur bearing metal layer material under alternate load (compressive stress of variation and the tensile stress of supervening thereof) effect.Fatigue crack produces exceed certain cycle-index under certain contact stress effect after.Generally occur in the weakness in stress concentration point or the metallographic structure on bearing shell 30 surfaces, the arrival binder course that then develops in depth, crackle will stretch to surrounding along binder course, and adjacent crackle intersects, and then forms local alloy-layer and peel off, and forms damaged.
For example, external a large amount of experimental study shows, Gao Xi and middle tin alloy bearing shell 30, if binder course is fine aluminium, because the mechanical strength of fine aluminium is low compared with alloy, fatigue crack will draw out to surrounding rapidly along junction plane in aluminum layer.The performance that is middle close binder can affect its fatigue strength.Therefore, in order effectively to improve its fatigue strength, can take two kinds of measures, one, can adopt the alloy that mechanical strength is higher to make middle close binder, such as aluminium silicon, aluminium manganese or alumel etc.Its two, the fatigue strength of alloy-layer material is subject to the impact of its thickness, therefore can reduce the thickness of binder course alloy, for example, thickness can be made as to 0.03mm.In addition, the ratio of the Young's modulus of alloy material and the Young's modulus of steel backing material is larger, and its fatigue strength is large.Therefore, can select material that Young's modulus is higher as middle close binder.
Further, do not do particular restriction for anti-attrition layer, subtract rete and also can be alloy-layer, in the time that the alloy with different is made anti-attrition layer, its thickness also can be different.Particularly, in an embodiment of the present utility model, anti-attrition layer is babbit layer or acieral layer, and the thickness of babbit layer or acieral layer is 0.08-0.3mm.In another embodiment of the present utility model, anti-attrition layer is copper lead alloy layer, and the thickness of copper lead alloy layer is 0.25-0.4mm.
According to the motor of the utility model second aspect, comprise the motor coupling assembly 100 described in above-described embodiment.Owing to thering is above-mentioned useful technique effect according to the utility model embodiment's motor coupling assembly 100, therefore, also there is corresponding technique effect according to the utility model embodiment's motor.That is: coupling assembly 100 replacings simply and make efficiency is high and motor cost is lower.
Be all known for those of ordinary skills according to other formations of the utility model embodiment's motor and operation, be not described in detail here.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiments or example.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in the situation that not departing from principle of the present utility model and aim in scope of the present utility model, modification, replacement and modification.
Claims (10)
1. a motor coupling assembly, is characterized in that, comprising:
Axle journal, described axle journal is provided with oilhole;
Coupling watt, described coupling watt is set on described axle journal; And
Bearing shell, described axle bush sleeve is located on described axle journal and between described axle journal and described coupling watt, described bearing shell is provided with the oil outlet corresponding with described oilhole, described bearing shell be connected with described axle journal and the outer circumferential face butt of described bearing shell described in the inner peripheral surface of coupling watt, described axle journal and described bearing shell are watt rotatable with respect to described coupling.
2. motor coupling assembly according to claim 1, is characterized in that, the cross section of described bearing shell is formed as annular, described bearing shell and described axle journal interference fit.
3. motor coupling assembly according to claim 2, is characterized in that, described bearing shell comprises two auxiliary sections, and two described auxiliary sections are located at respectively on the outer circumferential face of described axle journal and coordinate and form described bearing shell.
4. motor coupling assembly according to claim 3, is characterized in that, the symmetrical configuration of two described auxiliary sections, and the radius of curvature of described auxiliary section is less than the radius of curvature of described axle journal.
5. motor coupling assembly according to claim 4, is characterized in that, the cross section of each described auxiliary section is formed as respectively U-shaped, and the distance of the opening of each described auxiliary section is than the little 0.5-1.5mm of the diameter of described axle journal.
6. motor coupling assembly according to claim 1, is characterized in that, the thickness of described bearing shell is 2.5-4mm.
7. motor coupling assembly according to claim 1, it is characterized in that, described bearing shell comprises steel layer, middle close binder and anti-attrition layer from inside to outside successively, wherein, the thickness of described middle close binder is 0.03mm, and the thickness of described anti-attrition layer is 0.08-0.4mm.
8. motor coupling assembly according to claim 7, is characterized in that, described anti-attrition layer is babbit layer or acieral layer, and the thickness of described babbit layer or acieral layer is 0.08-0.3mm.
9. motor coupling assembly according to claim 7, is characterized in that, described anti-attrition layer is copper lead alloy layer, and the thickness of described copper lead alloy layer is 0.25-0.4mm.
10. a motor, is characterized in that, comprises the motor coupling assembly described in any one in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681129.4U CN203614569U (en) | 2013-10-30 | 2013-10-30 | Engine coupling assembly and engine provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320681129.4U CN203614569U (en) | 2013-10-30 | 2013-10-30 | Engine coupling assembly and engine provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614569U true CN203614569U (en) | 2014-05-28 |
Family
ID=50767218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320681129.4U Expired - Fee Related CN203614569U (en) | 2013-10-30 | 2013-10-30 | Engine coupling assembly and engine provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614569U (en) |
-
2013
- 2013-10-30 CN CN201320681129.4U patent/CN203614569U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180423 Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee after: Beijing treasure Car Co.,Ltd. Address before: 102206 Changping District City, Shahe, Sha Yang Road, Beijing Patentee before: BEIQI FOTON MOTOR Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee after: Beijing baowo Automobile Co.,Ltd. Address before: No. 188, Miyun District, Miyun District, Beijing, Beijing Patentee before: Beijing treasure Car Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20211030 |