CN110285143A - A kind of main brasses and mounting structure - Google Patents
A kind of main brasses and mounting structure Download PDFInfo
- Publication number
- CN110285143A CN110285143A CN201910580556.5A CN201910580556A CN110285143A CN 110285143 A CN110285143 A CN 110285143A CN 201910580556 A CN201910580556 A CN 201910580556A CN 110285143 A CN110285143 A CN 110285143A
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- China
- Prior art keywords
- bearing shell
- top bearing
- transition
- main
- transition portion
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Sliding-Contact Bearings (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention belongs to technical field of engines, a kind of main brasses and mounting structure are disclosed.The main brasses, including top bearing shell and lower bearing, the both ends of top bearing shell are connected to the both ends of lower bearing respectively, and top bearing shell includes First Transition portion and two support portions, the both ends in First Transition portion are connected to two support portions, and the axial width in First Transition portion is less than the axial width of support portion.The top bearing shell of the main brasses reduces the partial cross section of top bearing shell by the way of variable cross-section, the contact area of the trunnion for reducing top bearing shell and crankshaft, reduces the frictional force between top bearing shell and the trunnion of crankshaft, to reduce friction loss.Meanwhile compared with prior art, under the premise of guaranteeing top bearing shell intensity, it is equivalent to the weight for reducing top bearing shell, plays the role of loss of weight, to reduce vehicle self weight oil consumption, improved engine net output power to reach, reduce the purpose of oil consumption.
Description
Technical field
The present invention relates to technical field of engines more particularly to a kind of main brasses and mounting structure.
Background technique
In engine working process, the stress of crankshaft main bearing is mainly by engine flare pressure and crank link mechanism
Inertia force influence, wherein base bearing lower bearing needs to bear the double influence of engine flare pressure and inertia force, but main
If advocating inertia force suffered by bearing top bearing shell, oil film carries pressure very little.Existing base bearing top bearing shell is lacked there are following
It falls into:
Firstly, the design safety surplus of base bearing on watt is excessive, cause to waste, it is often more important that, due to base bearing on watt
Contact area between main bearing journal is big, and the frictional force of generation is larger, makes the friction loss of crank-connecting rod mechanism for engine
It is more.
Secondly, base bearing on watt generally has through oil groove, it is provided in the different location of oil groove and is connected with oil groove
Oilhole, for base bearing on watt other than oil-hole location, the cross sectional shape size at other positions is almost the same.Lower half main bearing
On be not provided with oil groove, in the endface that base bearing on watt is combined with lower half main bearing, oil groove is from having to no change dramatically, no
Conducive to the formation of oil film.Meanwhile oil film carrying pressure jump is violent, be easy to cause and peels off with the alloy coat of bearing shell, reduces
Service life, and it is easy biggish oil leak occur in the combination endface of base bearing on watt and lower half main bearing.
Summary of the invention
The purpose of the present invention is to provide a kind of main brasses and mounting structures, for reducing own wt, and reduce
Frictional force between top bearing shell and crankshaft, to reduce friction loss.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of main brasses, including top bearing shell and lower bearing, the both ends of the top bearing shell are connected to the lower axle respectively
Watt both ends, the top bearing shell includes First Transition portion and two support portions, and the both ends in the First Transition portion are connected to
Two support portions, the axial width in the First Transition portion are less than the axial width of the support portion.
Preferably, the circumferential direction along the First Transition portion, the axial width in the First Transition portion is from both ends to centre
It gradually decreases.
Preferably, offering oilhole on the top bearing shell, the oilhole is for being passed through lubricating oil, in the top bearing shell
Inner wall on offer oil groove, the oil groove is connected to the oilhole.
Preferably, being provided with transition structure between at least one end and the lower bearing of the oil groove, it is used for institute
State the inner surface that the lubricating oil in oil groove transits to the lower bearing.
Preferably, the transition structure is wedge block, the wedge block is arranged in the oil groove and is located at its end
At position, the thickness of the wedge block is gradually increased to the direction close to the lower bearing.
For this purpose, also a kind of mounting structure of the present invention, described including engine body and above-mentioned main brasses
The top bearing shell of main brasses is mounted on the engine body.
Preferably, the engine body includes two fixed parts and linking arm, the both ends of the linking arm connect respectively
Two fixed parts are connected to, holding tank are provided on the linking arm, the holding tank is for accommodating the base bearing axis
Watt top bearing shell.
Preferably, being provided with the second transition part on the linking arm, the cross section of second transition part is less than institute
State the cross section of fixed part.
Preferably, the inner surface of the holding tank is bonded with the outer peripheral surface of the top bearing shell, and the holding tank is interior
Surface and the outer peripheral surface of the top bearing shell match.
Preferably, offering locating slot on the fixed part, the locating slot is connected with the holding tank, in institute
It states and corresponds to the locating slot on the outer wall of top bearing shell and be provided with locating piece, the locating piece is connected in the locating slot.
Beneficial effects of the present invention:
Main brasses provided by the invention, the axial width by the way that First Transition portion is arranged are less than the axial wide of support portion
Degree, top bearing shell reduces the partial cross section of top bearing shell by the way of variable cross-section, for reducing the trunnion of top bearing shell and crankshaft
Contact area reduces the frictional force between top bearing shell and the trunnion of crankshaft, to reduce friction loss.Meanwhile with existing skill
Art is compared, and under the premise of guaranteeing top bearing shell intensity, is equivalent to the weight for reducing top bearing shell, is played the role of loss of weight, to drop
Low vehicle self weight oil consumption, improves engine net output power to reach, reduces the purpose of oil consumption.
The present invention also provides a kind of mounting structure, including engine body and main brasses, main brasses it is upper
Bearing shell is mounted on engine body.The mounting structure meets light-weighted demand for reducing own wt, and can reduce
Oil consumption, and the frictional force between reduction top bearing shell and crankshaft of being self-possessed reach the mesh for improving engine efficiency to reduce friction loss
's.
Detailed description of the invention
Fig. 1 is the structural schematic diagram at one visual angle of top bearing shell in main brasses of the present invention；
Fig. 2 is the structural schematic diagram at another visual angle of top bearing shell in main brasses of the present invention；
Fig. 3 is the top view of top bearing shell in main brasses of the present invention；
Fig. 4 is the structural schematic diagram at one visual angle of engine body in mounting structure of the present invention；
Fig. 5 is the bottom view of engine body in mounting structure of the present invention.
In figure:
1, top bearing shell；2, wedge block；3, engine body；
11, support portion；12, First Transition portion；13, the first groove；14, oilhole；15, oil groove；16, locating piece；
31, fixed part；32, linking arm；
311, locating slot；
321, holding tank；322, the second groove.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
It will the technical scheme of the embodiment of the invention will be described in further detail in conjunction with attached drawing, it is clear that described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
In the description of the present invention unless specifically defined or limited otherwise, term " connected ", " connection ", " fixation " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be mechanical connection,
It can be electrical connection；It can be directly connected, the company inside two elements can also be can be indirectly connected through an intermediary
Logical or two elements interaction relationship.For the ordinary skill in the art, can be understood with concrete condition above-mentioned
The concrete meaning of term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
A kind of main brasses are present embodiments provided, for reducing friction loss.As shown in Figure 1, the main brasses
Including top bearing shell 1 and lower bearing (not shown), the both ends of top bearing shell 1 are connected to the both ends of lower bearing respectively, form annulus
Shape structure, annular structure are worn for crankshaft.The generally semicircle ring structure of top bearing shell 1, top bearing shell 1 specifically include two branch
Support part 11 and First Transition portion 12, the both ends in First Transition portion 12 are connected to two support portions 11, are produced into save
This, it is preferable that two support portions 11 and First Transition portion 12 are an integral molding structure.Since top bearing shell 1 is primarily subjected to inertia force,
In order to avoid unnecessary waste, the axial width in First Transition portion 12 is less than to the axial width of support portion 11.
Main brasses provided in this embodiment, the axial width by the way that First Transition portion 12 is arranged are less than support portion 11
Axial width, top bearing shell 1 reduce the partial cross section of top bearing shell 1, for reducing top bearing shell 1 and crankshaft by the way of variable cross-section
Trunnion contact area, reduce the frictional force between top bearing shell 1 and the trunnion of crankshaft, to reduce friction loss.Together
When, compared with prior art, under the premise of guaranteeing 1 intensity of top bearing shell, it is equivalent to the weight for reducing top bearing shell 1, plays loss of weight
Effect, thus reduce vehicle self weight oil consumption, come reach improve engine net output power, reduce the purpose of oil consumption.
The axial width of circumferential direction along First Transition portion 12, First Transition portion 12 is gradually decreased from both ends to centre.Into one
Step ground, as shown in Figs. 1-2, the top bearing shell 1 is on the basis of existing universal main spindle holds top bearing shell 1, in the intermediate region of top bearing shell 1
At least side offers the first groove 13, along the circumferential direction of top bearing shell 1, entity part of the top bearing shell 1 between the first groove 13
Above-mentioned First Transition portion 12 is formed, two support portions 11 are located at the two sides of the first groove 13.Optionally, the first groove 13 is
Arcuate structure can cut definite part in the circular arc of the two sides same diameter of top bearing shell 1 in actual production, so that the
One transition part 12 has circular arc portion, which is variable section structure, and rest part remains as cross-section structure.Wherein the first mistake
The cross section for crossing portion 12 is that both ends sectional dimension is big, and intermediate cross-section size is small, in this way, while structure beauty,
Cutting arc shape work piece lower production costs, and arc structure plays the role of guiding and transition.
It should be strongly noted that wherein two sides do not refer to top bearing shell for carrying out circular arc cutting in the two sides of top bearing shell 1
1 two sides abutted against with lower bearing, two sides are specifically referred to along the two sides of top bearing shell 1 as shown in Figure 3, this part is equivalent to axis
The working region of watt 1 pair of crankshaft.
In order to guarantee the lubricant effect between upper bearing (metal) and crankshaft, as shown in Figs. 1-2, oilhole is offered on top bearing shell 1
14, oilhole 14 offers oil groove 15, oil groove 15 is connected to oilhole 14, lubrication for being passed through lubricating oil on the inner wall of top bearing shell 1
Oil flows into oil groove 15 through oilhole 14, in the present embodiment, is equipped with oil groove 15 on First Transition portion 12 and two support portions 11
A section.Since existing top bearing shell 1 uses through oil groove 15, it is not provided with oil groove 15 on lower half main bearing, on base bearing
Watt endface combined with lower half main bearing is easy to appear mutation, in order to solve this problem, in the present embodiment on base bearing
The oil groove 15 of bearing shell 1 is not to be provided with transition between at least one end of oil groove 15 and lower bearing using through oil groove 15
Structure, for the lubricating oil in oil groove 15 to be transitted to the inner surface of lower bearing.
Further, transition structure is wedge block 2, and wedge block 2 is arranged in oil groove 15 and is located at its end position, wedge
The thickness of shape block 2 is gradually increased to the direction close to lower bearing, and wherein the thickness of wedge block 2 specifically refers to the groove depth along oil groove 15
Direction.Under the inclined-plane guiding role of wedge block 2, so that lubricating oil in oil groove 15 is through wedge block 2 to the inner surface of lower bearing
Carry out transition.By the way that wedge block 2 is arranged, wedge block 2 plays the role of transition, avoids oil groove 15 from having no acute variation
The case where, be conducive to the formation of oil film.Meanwhile under the water conservancy diversion transitional function of wedge block 2, reduces oil film carrying pressure and be easy
The case where being now mutated makes oil film carrying pressure smooth transition, reduces bearing alloy disbonding, play the role of protective coating, prolong
Service life has been grown, and lubricating end surface oil leakage quantity can be made to reduce, to reduce the pump oil power consumption in lubricating oil, to improve
The power and durability of engine.
Preferably, thickness of the wedge block 2 close to lower bearing side is identical as the groove depth of oil groove 15, is equivalent in top bearing shell 1
The end of oil groove 15 is filled and led up by wedge block 2, so that top bearing shell 1 flushes at 15 position of oil groove with lower bearing.It is set using this
It sets, further reduces 15 variation degree of endface oil groove combined in base bearing on watt with lower half main bearing, guarantee oil film
Smoothly formed.
It should be strongly noted that in order to reduce production cost, it is preferable that base bearing top bearing shell 1 and wedge block 2 are integrated
Molding structure can be when the inner wall of base bearing top bearing shell 1 machines oil groove 15, at the both ends of oil groove 15 in actual production
Form wedge block 2.
The present embodiment additionally provides a kind of mounting structure, as shown in figure 4, the mounting structure includes engine body 3 and master
The top bearing shell 1 of bearing bush, main brasses is mounted on engine body 3.The mounting structure is full for reducing own wt
The light-weighted demand of foot, and self weight oil consumption can be reduced, and reduce the frictional force between top bearing shell 1 and crankshaft, to reduce friction
Loss achievees the purpose that improve engine efficiency.
Further, engine body 3 includes that linking arm 32 and two fixed parts 31, the both ends of linking arm 32 are separately connected
In being provided with holding tank 321 on two fixed parts 31, linking arm 32, holding tank 321 is used to accommodate the top bearing shell of main brasses
1.The second transition part is provided on linking arm 32, the cross section of the second transition part is less than the cross section of fixed part 31.With it is existing
Technology is compared, and under the premise of guaranteeing engine body 3, is equivalent to the weight for reducing engine body 3, is played the work of loss of weight
With, thus reduce vehicle self weight oil consumption, come reach improve engine net output power, reduce the purpose of oil consumption.
The inner surface of holding tank 321 is bonded with the outer peripheral surface of top bearing shell 1, and the inner surface of holding tank 321 and top bearing shell 1
Outer peripheral surface matches.Further, the engine body 3 is on the basis of available engine body 3, in engine body 3
Intermediate region at least side offers the second groove 322, and in the present embodiment, the intermediate region of engine body 3 at least side is opened
If the entity part between two the second grooves 322 forms above-mentioned second transition part, two fixations there are two the second groove 322
Portion 31 is located at the two sides of the second groove 322.Optionally, the second groove 322 is that arcuate structure in actual production can be with
Definite part is cut in the circular arc of the two sides same diameter of engine body 3, so that the second transition part has circular arc portion, it should
Part is variable section structure, and rest part remains as cross-section structure.
It is understood that under the premise of the first groove 13 are arranged in top bearing shell 1, in order to which top bearing shell 1 can be mounted on hair
Motivation body 3, the diameter of the second groove 322 is preferably identical as the diameter of the first groove 13, so that top bearing shell 1 and engine body
3 side keeps concordant, in this way, while structure beauty, cutting arc shape work piece lower production costs, and arc structure
Play the role of guiding and transition.
It should be strongly noted that wherein two sides do not refer to hair for carrying out circular arc cutting in the two sides of engine body 3
The two sides that motivation body 3 is connected with fixed part 31, the two sides are specifically referred to along the two sides of engine body 3 as shown in Figure 5,
This part is equivalent to the working region that engine body 3 supports top bearing shell 1.
In order to guarantee the mounting stability of top bearing shell 1 and engine body 3, optionally, it is fixed to offer on fixed part 31
Position slot 311, locating slot 311 are connected with holding tank 321, locating slot 311 are corresponded on the outer wall of top bearing shell 1 and is provided with locating piece
16, it is connected in locating slot 311 by locating piece 16, plays the role of positioning and fixation.Preferably, 311 He of locating slot
Locating piece 16 can be wedge structure.
In the description of this article, it is to be understood that term " on ", "lower", " right side ", etc. orientation or positional relationships be based on
Orientation or positional relationship shown in the drawings is merely for convenience of description and simplification and operates, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.In addition, term " first ", " second ", are only used to distinguish between description, have no special meaning.
In the description of this specification, the description of reference term " embodiment ", " example " etc. means to combine the embodiment
Or example particular features, structures, materials, or characteristics described are included at least one embodiment or example of the invention.?
In this specification, schematic expression of the above terms be may not refer to the same embodiment or example.
In addition, the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of main brasses, including top bearing shell (1) and lower bearing, the both ends of the top bearing shell (1) are connected to described respectively
The both ends of lower bearing, which is characterized in that the top bearing shell (1) includes First Transition portion (12) and two support portions (11), described
The both ends in First Transition portion (12) are connected to two support portions (11), the axial width of the First Transition portion (12)
Less than the axial width of the support portion (11).
2. main brasses according to claim 1, which is characterized in that along the circumferential direction of the First Transition portion (12), institute
The axial width for stating First Transition portion (12) is gradually decreased from both ends to centre.
3. main brasses according to claim 1, which is characterized in that offer oilhole on the top bearing shell (1)
(14), the oilhole (14) offers oil groove (15), the oil for being passed through lubricating oil on the inner wall of the top bearing shell (1)
Slot (15) is connected to the oilhole (14).
4. main brasses according to claim 3, which is characterized in that the oil groove (15) at least one end with it is described
Transition structure is provided between lower bearing, for the lubricating oil in the oil groove (15) to be transitted to the interior table of the lower bearing
Face.
5. main brasses according to claim 4, which is characterized in that the transition structure is wedge block (2), the wedge
Shape block (2) setting is in the oil groove (15) and is located at its end position, and the thickness of the wedge block (2) is under described
The direction of bearing shell gradually increases.
6. a kind of mounting structure, which is characterized in that including engine body (3) and the described in any item main shafts of claim 1-5
Bearing shell is held, the top bearing shell (1) of the main brasses is mounted on the engine body (3).
7. mounting structure according to claim 6, which is characterized in that the engine body (3) includes two fixed parts
(31) and linking arm (32), the both ends of the linking arm (32) are connected to two fixed parts (31), in the connection
It is provided on arm (32) holding tank (321), the holding tank (321) is used to accommodate the top bearing shell (1) of the main brasses.
8. mounting structure according to claim 7, which is characterized in that be provided with the second transition on the linking arm (32)
Portion, the cross section of second transition part are less than the cross section of the fixed part (31).
9. mounting structure according to claim 7, which is characterized in that the inner surface of the holding tank (321) and it is described on
The outer peripheral surface of bearing shell (1) is bonded, and the inner surface of the holding tank (321) and the outer peripheral surface of the top bearing shell (1) match.
10. mounting structure according to claim 7, which is characterized in that offer locating slot on the fixed part (31)
(311), the locating slot (311) is connected with the holding tank (321), on the outer wall of the top bearing shell (1) described in correspondence
Locating slot (311) is provided with locating piece (16), and the locating piece (16) is connected in the locating slot (311).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910580556.5A CN110285143B (en) | 2019-06-28 | 2019-06-28 | Main bearing bush and mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910580556.5A CN110285143B (en) | 2019-06-28 | 2019-06-28 | Main bearing bush and mounting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110285143A true CN110285143A (en) | 2019-09-27 |
| CN110285143B CN110285143B (en) | 2021-04-16 |
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| CN201910580556.5A Active CN110285143B (en) | 2019-06-28 | 2019-06-28 | Main bearing bush and mounting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503095A (en) * | 2020-10-10 | 2021-03-16 | 江苏飞月轴瓦有限公司 | Oil guide bearing bush simple and convenient to use and provided with heat dissipation structure |
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| CN207514064U (en) * | 2017-11-03 | 2018-06-19 | 广州柴油机厂股份有限公司 | A kind of punching type diesel oil machine bearing |
| CN208057706U (en) * | 2018-03-13 | 2018-11-06 | 潍柴动力股份有限公司 | A kind of main bearing shell and the V-type engine with the main bearing shell |
| CN108799317A (en) * | 2018-06-21 | 2018-11-13 | 力帆实业(集团)股份有限公司 | A kind of gasoline engine connecting rod |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503095A (en) * | 2020-10-10 | 2021-03-16 | 江苏飞月轴瓦有限公司 | Oil guide bearing bush simple and convenient to use and provided with heat dissipation structure |
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