CN209261693U - A kind of crankcase of two cylinders pancake engine - Google Patents
A kind of crankcase of two cylinders pancake engine Download PDFInfo
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- CN209261693U CN209261693U CN201821577857.XU CN201821577857U CN209261693U CN 209261693 U CN209261693 U CN 209261693U CN 201821577857 U CN201821577857 U CN 201821577857U CN 209261693 U CN209261693 U CN 209261693U
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- crankcase
- crankshaft
- cylinders
- annular groove
- groove
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Abstract
A kind of crankcase of two cylinders pancake engine, belong to engine component field, including main crank case and secondary crankshaft case, main crank case is integrally formed with cylinder body, secondary crankshaft case is removably connected to main crank case and the two surrounds crankshaft working chamber and two crankshaft installed holes jointly, an annular groove and multiple straight-line grooves are provided on the inner wall in each crankshaft installed hole, circumferencial direction of the annular groove along crankshaft installed hole extends, multiple straight-line grooves are along the axially extending of crankshaft installed hole and are connected to respectively with annular groove, crankshaft installed is equipped with sliding bearing in hole, multiple oilholes are provided on sliding bearing, multiple oilholes are connected to annular groove and multiple straight-line grooves respectively.The crankcase of this two cylinders pancake engine, with high lubricating effect, the slow feature of the rate of wear.
Description
Technical field
The utility model relates to engine component fields, in particular to a kind of two cylinder pancake engines
Crankcase.
Background technique
The position that cylinder block lower part is used to install crankshaft is known as crankcase.For in-line engine, crankcase one
As be divided into upper crankcase and lower crankcase；For opposed engine, crankcase is generally divided into main crank case and secondary crankshaft
Case.
But the existing generally existing lubricant effect of crankcase is poor, the fast problem of the rate of wear.
Utility model content
The purpose of this utility model is to provide a kind of crankcases of two cylinder pancake engines, with lubricant effect
It is good, the slow feature of the rate of wear.
The embodiments of the present invention are achieved in that
A kind of crankcase of two cylinders pancake engine comprising main crank case and secondary crankshaft case, the main crank case
Integrally formed with cylinder body, the secondary crankshaft case is removably connected to the main crank case and the two surround jointly crankshaft working chamber and
Two crankshaft installed holes are provided with an annular groove and multiple straight-line grooves, the annular on the inner wall in each crankshaft installed hole
Circumferencial direction of the slot along the crankshaft installed hole extends, and the multiple straight-line groove is along the axially extending of the crankshaft installed hole and divides
It is not connected to the annular groove, sliding bearing is installed in the crankshaft installed hole, multiple oil are provided on the sliding bearing
Hole, the multiple oilhole are connected to annular groove and the multiple straight-line groove respectively.
Further, in the utility model preferred embodiment, the multiple straight-line groove far from the annular groove one
End extends to the inner wall of the main crank case and the secondary crankshaft case.
Further, in the utility model preferred embodiment, the multiple oilhole along annular groove circumferencial direction and
The length direction interval of straight-line groove is arranged, and the aperture of the multiple oilhole is respectively less than the width of annular groove and straight-line groove.
Further, in the utility model preferred embodiment, the main crank case is provided with the first location structure, institute
It states secondary crankshaft case and is provided with the second location structure, first location structure is one in positioning convex platform and positioning groove, institute
Stating the second location structure is another in the positioning convex platform and the positioning groove.
Further, in the utility model preferred embodiment, first location structure is the positioning convex platform, institute
Stating the second location structure is the positioning groove.
Further, in the utility model preferred embodiment, first location structure is the positioning groove, institute
Stating the second location structure is the positioning convex platform.
Further, in the utility model preferred embodiment, there are two piston cylinder and two are cold for the cylinder body setting
But structure, described two piston cylinder axis are overlapped and are located at the two sides of the crankcase, and described two cooling structures wrap
The inlet and outlet for including cooling chamber and being connected to respectively with cooling chamber, two cooling chambers are cylindrical and surround respectively
Two piston cylinder settings, the inner wall of each cooling chamber are provided with multiple heat sink strips, and the multiple heat sink strip is along institute
The circumferencial direction interval setting of cooling chamber is stated, each heat sink strip extends along the axis direction of the piston cylinder.
Further, in the utility model preferred embodiment, the inner wall of the cooling chamber includes sequentially connected
One side wall, bottom wall and second sidewall, the multiple heat sink strip are respectively arranged at the first side wall and the second sidewall, and institute
The heat sink strip stated on the first side wall and the second sidewall mutually staggers in the diametrical direction of the piston cylinder.
Further, in the utility model preferred embodiment, the cross section of the heat sink strip is semicircular arc-shaped.
Further, in the utility model preferred embodiment, the inlet and outlet are respectively communicated in corresponding
The piston cylinder two sides, and the diameter of the water inlet be greater than the water outlet diameter.
The beneficial effect of the utility model embodiment is:
The crankcase of this two cylinders pancake engine includes main crank case and secondary crankshaft case, main crank case integrally formed with
Cylinder body, secondary crankshaft case is removably connected to main crank case and the two surrounds crankshaft working chamber and two crankshaft installed holes jointly, often
An annular groove and multiple straight-line grooves are provided on the inner wall in a crankshaft installed hole, circumferencial direction of the annular groove along crankshaft installed hole prolongs
It stretches, multiple straight-line grooves are along the axially extending of crankshaft installed hole and are connected to respectively with annular groove, and sliding is equipped in crankshaft installed hole
Bearing is provided with multiple oilholes on sliding bearing, and multiple oilholes are connected to annular groove and multiple straight-line grooves respectively.Pass through straight-line groove
With the setting of annular groove, the lubricating oil in crankcase can penetrate between the inner wall in crankshaft installed hole and the outer wall of sliding bearing into
Row lubrication, while can be penetrated between the inner wall and crankshaft in crankshaft installed hole and be lubricated by multiple oilholes, in this way can be with
From lubricant effect is largely improved, the speed of crankcase abrasion is reduced, the defect of the prior art is made up.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural representation of the crankcase for the two cylinder pancake engines that the utility model first embodiment provides
Figure；
Fig. 2 is the structural representation of the spindle box for the two cylinder pancake engines that the utility model first embodiment provides
Figure；
Fig. 3 is the structural representation of the secondary crankshaft case for the two cylinder pancake engines that the utility model first embodiment provides
Figure；
Fig. 4 is the structural representation of the sliding bearing for the two cylinder pancake engines that the utility model first embodiment provides
Figure.
Icon: the crankcase of two cylinder pancake engine of 100-；110- main crank case；111- piston cylinder；112-
Cooling chamber；113- water inlet；114- water outlet；115- heat sink strip；116- crankshaft installed hole；120- secondary crankshaft case.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "vertical", " water
It is flat ", "inner", the instructions such as "outside" orientation or positional relationship be to be based on the orientation or positional relationship shown in the drawings or the reality
With novel product using when the orientation or positional relationship usually put, be merely for convenience of description the utility model and simplification retouched
It states, rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation,
Therefore it should not be understood as limiting the present invention.It is retouched in addition, term " first ", " second ", " third " etc. are only used for distinguishing
It states, is not understood to indicate or imply relative importance.
In addition, the terms such as term "horizontal", "vertical" are not offered as requiring component abswolute level or pendency, but can be slightly
Low dip.It is not to indicate that the structure has been had to if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It is complete horizontal, but can be slightly tilted.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
First embodiment:
Fig. 1-4 is please referred to, a kind of crankcase 100 of two cylinder pancake engines is present embodiments provided, is used to pacify
The crankshaft of mounted engine.The crankcase 100 of this two cylinders pancake engine includes main crank case 110 and secondary crankshaft case 120, master
Crankcase 110 is integrally formed with cylinder body, and secondary crankshaft case 120 is removably connected to main crank case 110 and the two surrounds crankshaft jointly
Working chamber and two crankshaft installed holes 116.
It is provided with an annular groove and multiple straight-line grooves on the inner wall in each crankshaft installed hole 116, annular groove is along crankshaft installed
The circumferencial direction in hole 116 extends, and multiple straight-line grooves are along the axially extending of crankshaft installed hole 116 and are connected to respectively with annular groove, more
A straight-line groove extends to the inner wall of main crank case 110 and secondary crankshaft case 120 far from one end of annular groove.
Sliding bearing is installed in crankshaft installed hole 116, is provided with multiple oilholes on sliding bearing, multiple oilholes respectively with
Annular groove is connected to multiple straight-line grooves.Multiple oilholes are arranged along the circumferencial direction of annular groove and the length direction interval of straight-line groove,
And the aperture of multiple oilholes is respectively less than the width of annular groove and straight-line groove.
The installation gap substantially in cuboid, the substantially cuboid of secondary crankshaft case 120 are provided on main crank case 110
It frame structure and is removably installed in above-mentioned installation gap, further, between main crank case 110 and secondary crankshaft case 120
It is bolted.It is bolted with easy to operate, the characteristics of stable connection.
In order to improve the positioning accuracy between main crank case 110 and secondary crankshaft case 120, main crank case 110 be can be set
There is the first location structure, the second location structure has can be set in secondary crankshaft case 120, and the first location structure and the second location structure are fixed
Position cooperation, the first location structure are one in positioning convex platform and positioning groove, and the second location structure is positioning convex platform and positioning
Another in groove.
In the present embodiment, the first location structure is positioning convex platform, and positioning convex platform is in cuboid, correspondingly, the second positioning
Structure is positioning groove, and positioning groove is also in cuboid, so as to positioning convex platform location fit.
The position setting of installation gap is corresponded on main crank case 110 there are two the first mounting hole, is arranged on secondary crankshaft case 120
There are two the second mounting hole, two the first mounting holes and two the second mounting holes are in semi-cylindrical, two the second mounting holes point
It is not connected to form two cylindrical crankshaft installed holes 116 with two the first mounting holes.
Crankshaft installed hole 116 is used to support crankshaft, and sliding bearing can be arranged in inner wall, for convenience to the profit of sliding bearing
It is sliding, the lubrication groove of annular can be set on the inner wall in two crankshaft installed holes 116, lubrication groove is for containing lubricating oil.Profit
The section of sliding slot is semicircle, so that lubricating oil can flow glibly in it, realizes the lubrication to sliding bearing.
Cylinder body is substantially in cuboid, is provided with two piston cylinders 111 and two cooling structures.Two piston cylinders
111 are respectively used to two pistons of installation, and two piston cylinders 111 are cylindrical and are relatively arranged on main crank case 110, and two
111 axis of piston cylinder is overlapped and is located at the two sides of crankcase.
Two cooling structures are respectively used to cooling two piston cylinders 111, to avoid crankcase overheat.Two cooling structures are equal
The water inlet 113 and water outlet 114 being connected to including cooling chamber 112 and respectively with cooling chamber 112.Cooling chamber 112 is cold for containing
But liquid.Two cooling chambers 112 are cylindrical and are arranged respectively around two piston cylinders 111, to enter the cold of cooling chamber 112
But liquid can be contacted with piston cylinder 111 as far as possible, to cool down to piston cylinder 111.
The inner wall of each cooling chamber 112 is respectively provided with multiple heat sink strips 115, circumference of multiple heat sink strips 115 along cooling chamber 112
The setting of direction interval, each heat sink strip 115 extend along the axis direction of piston cylinder 111.Further, in this embodiment cold
But the inner wall of chamber 112 may include sequentially connected the first side wall, bottom wall and second sidewall, and multiple heat sink strips 115 can be distinguished
It is set on the first side wall and second sidewall.And the heat sink strip 115 on the first side wall and second sidewall is in 111 diameter of piston cylinder
It is mutually staggered on direction, can thus extend flow path of the coolant liquid in cooling chamber 112, improve coolant liquid and cooling chamber
112 contact area, to improve coolant liquid to the cooling effect of main crank case 110.In other embodiments, multiple heat sink strips
115 can also use other arrangement modes, for example be only arranged in the first side wall or second sidewall.
Heat sink strip 115 can use various shape, and in the present embodiment, the cross section of heat sink strip 115 can be semicircular arc-shaped.
The setting of arc can be close to 115 surface flow of heat sink strip in favor of coolant liquid, to guarantee cooling effect.In other embodiments
In, the cross section of heat sink strip 115 may be other shapes, such as triangle.
Water inlet 113 and water outlet 114 are respectively used to import and export coolant liquid.Water inlet 113 and water outlet 114 can be with
The diameter of two sides that are cylindrical and being connected to corresponding piston cylinder 111, water inlet 113 is greater than the straight of water outlet 114
Diameter.Water inlet 113 is set and is the speed for delaying coolant liquid from the outflow cooling chamber 112 of water outlet 114 greater than the purpose of water outlet 114
Degree, to increase the time of contact of coolant liquid Yu cooling chamber 112, to improve cooling effect.
The crankcase 100 of this two cylinders pancake engine includes main crank case 110 and secondary crankshaft case 120, main crank case
110 integrally formed with cylinder body, and secondary crankshaft case 120 is removably connected to main crank case 110 and the two surrounds crankshaft working chamber jointly
With two crankshaft installed holes 116, an annular groove and multiple straight-line grooves are provided on the inner wall in each crankshaft installed hole 116, annular
Circumferencial direction of the slot along crankshaft installed hole 116 extends, multiple straight-line grooves along the axially extending of crankshaft installed hole 116 and respectively with ring
Shape slot is connected to, and is equipped with sliding bearing in crankshaft installed hole 116, and multiple oilholes, multiple oilholes difference are provided on sliding bearing
It is connected to annular groove and multiple straight-line grooves.By the setting of straight-line groove and annular groove, the lubricating oil in crankcase can penetrate into song
It is lubricated between the inner wall of shaft mounting hole 116 and the outer wall of sliding bearing, while crankshaft can be penetrated by multiple oilholes
It is lubricated between the inner wall and crankshaft of mounting hole 116, crankcase mill can be reduced from lubricant effect is largely improved in this way
The speed of damage makes up the defect of the prior art.
Second embodiment:
Present embodiments provide a kind of crankcase 100 of two cylinder pancake engines, overall construction, working principle and
The technical effect of acquirement provided with first embodiment it is essentially identical, the difference is that the first location structure and second positioning knot
The specific structure of structure.
In the present embodiment, the first location structure is positioning groove, and correspondingly, the second location structure is positioning convex platform.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of crankcase of two cylinder pancake engines, which is characterized in that including main crank case and secondary crankshaft case, the master
Crankcase is integrally formed with cylinder body, and the secondary crankshaft case is removably connected to the main crank case and the two surrounds crankshaft work jointly
Make chamber and two crankshaft installed holes, is provided with an annular groove and multiple straight-line grooves, institute on the inner wall in each crankshaft installed hole
It states circumferencial direction of the annular groove along the crankshaft installed hole to extend, axial direction of the multiple straight-line groove along the crankshaft installed hole is prolonged
It stretches and is connected to respectively with the annular groove, sliding bearing is installed in the crankshaft installed hole, is provided on the sliding bearing
Multiple oilholes, the multiple oilhole are connected to annular groove and the multiple straight-line groove respectively.
2. the crankcase of two cylinders pancake engine according to claim 1, which is characterized in that the multiple straight-line groove
One end far from the annular groove extends to the inner wall of the main crank case and the secondary crankshaft case.
3. the crankcase of two cylinders pancake engine according to claim 1, which is characterized in that the multiple oilhole edge
The setting of the length direction interval of the circumferencial direction of annular groove and straight-line groove, and the aperture of the multiple oilhole be respectively less than annular groove and
The width of straight-line groove.
4. the crankcase of two cylinders pancake engine according to claim 1, which is characterized in that the main crank case is set
Be equipped with the first location structure, the secondary crankshaft case is provided with the second location structure, first location structure be positioning convex platform and
One in positioning groove, second location structure is another in the positioning convex platform and the positioning groove.
5. the crankcase of two cylinders pancake engine according to claim 4, which is characterized in that the first positioning knot
Structure is the positioning convex platform, and second location structure is the positioning groove.
6. the crankcase of two cylinders pancake engine according to claim 4, which is characterized in that the first positioning knot
Structure is the positioning groove, and second location structure is the positioning convex platform.
7. the crankcase of two cylinders pancake engine according to claim 1, which is characterized in that the cylinder body is provided with
Two piston cylinders and two cooling structures, described two piston cylinder axis are overlapped and are located at the two sides of the crankcase, institute
The inlet and outlet that two cooling structures include cooling chamber and are connected to respectively with cooling chamber are stated, two cooling chambers are equal
Cylindrical and respectively around two piston cylinders settings, the inner wall of each cooling chamber is provided with multiple heat sink strips,
The multiple heat sink strip is arranged along the circumferencial direction interval of the cooling chamber, and each heat sink strip is along the axis of the piston cylinder
Line direction extends.
8. the crankcase of two cylinders pancake engine according to claim 7, which is characterized in that the cooling chamber it is interior
Wall includes sequentially connected the first side wall, bottom wall and second sidewall, and the multiple heat sink strip is respectively arranged at the first side wall
With the second sidewall, and the heat sink strip on the first side wall and the second sidewall is in the diametrical direction of the piston cylinder
It mutually staggers.
9. the crankcase of two cylinders pancake engine according to claim 8, which is characterized in that the cross of the heat sink strip
Section is semicircular arc-shaped.
10. the crankcase of two cylinders pancake engine according to claim 7, which is characterized in that the water inlet and
Water outlet is respectively communicated in the two sides of the corresponding piston cylinder, and the diameter of the water inlet is greater than the straight of the water outlet
Diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821577857.XU CN209261693U (en) | 2018-09-26 | 2018-09-26 | A kind of crankcase of two cylinders pancake engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821577857.XU CN209261693U (en) | 2018-09-26 | 2018-09-26 | A kind of crankcase of two cylinders pancake engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209261693U true CN209261693U (en) | 2019-08-16 |
Family
ID=67553212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821577857.XU Active CN209261693U (en) | 2018-09-26 | 2018-09-26 | A kind of crankcase of two cylinders pancake engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209261693U (en) |
-
2018
- 2018-09-26 CN CN201821577857.XU patent/CN209261693U/en active Active
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