CN213175809U - Crank link mechanism with cooling oil duct - Google Patents
Crank link mechanism with cooling oil duct Download PDFInfo
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- CN213175809U CN213175809U CN202022170901.9U CN202022170901U CN213175809U CN 213175809 U CN213175809 U CN 213175809U CN 202022170901 U CN202022170901 U CN 202022170901U CN 213175809 U CN213175809 U CN 213175809U
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- connecting rod
- oil
- crank
- piston
- crankshaft
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Abstract
The utility model discloses a crank link mechanism with a cooling oil duct, which comprises a left cylinder piston and a right cylinder piston, a left cylinder connecting rod and a right cylinder connecting rod, a crankshaft, an oil nozzle, an oil hole and an oil groove; the two connecting rods are arranged on a crank pin of the crankshaft side by side, and the other ends of the connecting rods are connected with corresponding pistons; the crank pin of the crankshaft is provided with two oil holes, the connecting rod is provided with the oil injection port and the oil groove, the oil injection port is communicated with the corresponding oil hole through the corresponding oil groove, and the oil groove is in an incomplete annular structure; the oil injection direction of the oil injection port on any connecting rod faces to the piston on the other connecting rod. The beneficial effects of the utility model are that, improve the lubricated effect of piston pin and piston, reduce the operating temperature of piston, improve gasoline engine life.
Description
Technical Field
The utility model relates to an engine field, especially a crank link mechanism with cooling oil duct.
Background
The crank-connecting rod mechanism is the main motion mechanism of gasoline engine and consists of piston assembly, connecting rod assembly and crankshaft assembly. The piston, the cylinder cover, the cylinder wall and the like form a combustion chamber together, and gas pressure generated by fuel combustion is transmitted to the connecting rod through the piston pin so as to push the crankshaft to rotate.
The piston is subjected to a very high thermal load during operation, and most of this heat is dissipated via the piston rings to the cylinder wall, a small portion is dissipated via the piston pin bosses and the gallery, and a small portion is transferred via the piston bottom to the oil splashed in the tank. If the heat load is too high, faults such as top cracks and sintering, piston ring blocking, piston pin boss cracks and the like often occur, and the faults directly cause the reduction or the failure of the working efficiency of the gasoline engine.
Disclosure of Invention
The utility model aims at providing a crank link mechanism with cooling oil duct to the problem that piston heat load is too high and lubrication badly leads to gasoline engine work efficiency to reduce or become invalid.
In order to achieve the above purpose, the utility model adopts the following technical scheme.
A crank connecting rod mechanism with a cooling oil duct comprises a left cylinder piston, a right cylinder piston, a left cylinder connecting rod, a right cylinder connecting rod, a crankshaft, an oil nozzle, an oil hole and an oil groove; the two connecting rods are arranged on a crank pin of the crankshaft side by side, and the other ends of the connecting rods are connected with corresponding pistons; the crank pin of the crankshaft is provided with two oil holes, the connecting rod is provided with the oil injection port and the oil groove, the oil injection port is communicated with the corresponding oil hole through the corresponding oil groove, and the oil groove is in an incomplete annular structure; the oil injection direction of the oil injection port on any connecting rod faces to the piston on the other connecting rod.
By adopting the technical scheme, after the oil hole on the crankshaft is communicated with the connecting rod oil groove, the lubricating oil is sprayed out from the connecting rod oil nozzle, and the oil beam is sprayed onto the corresponding piston; the oil beam cools the piston, and when the engine runs, the oil jet intermittently injects oil to the piston, so that the lubricating effect of the piston pin and the piston can be effectively improved, the working temperature of the piston is reduced, the service life of the gasoline engine is prolonged, the structure is simple, the production cost is low, and the implementation is easy.
Preferably, the connecting rod comprises a connecting rod body and a connecting rod cover, the connecting rod body and the connecting rod cover are fixedly connected through a connecting rod bolt, the oil groove is composed of two parts, one part is located on the connecting rod body, and the other part is located on the connecting rod cover. When the oil hole on the crank pin is communicated with the oil hole on the connecting rod cover, the oil beam is sprayed out from the oil spray port to the corresponding piston, when the oil hole on the crank pin is communicated with the oil hole on the connecting rod body, the oil beam is sprayed out from the oil spray port to the corresponding piston, the crankshaft rotates for one circle to spray oil twice, the oil spray interval time is shortened, and the lubricating and cooling effects are improved.
Preferably, the oil groove is located on the connecting rod body or on the connecting rod cover. When the oil hole on the crank pin is communicated with the oil hole on the connecting rod cover, the oil beam is sprayed out from the oil spray port to the corresponding piston, or when the oil hole on the crank pin is communicated with the oil hole on the connecting rod body, the oil beam is sprayed out from the oil spray port to the corresponding piston, and the crankshaft rotates for one circle to spray primary oil; wherein, need not all to process the oil groove on two members that constitute the connecting rod, can effectively reduce the processing volume, reduce manufacturing cost.
Preferably, the arc length of the oil groove is smaller than the arc length corresponding to the connecting rod cover or the inner wall surface of the connecting rod body. The oil groove is arranged on one section of the inner wall of the connecting rod cover or the connecting rod body and is not communicated, so that the oil injection direction of the oil beam can be controlled, and the oil injection pressure can be kept.
Preferably, the oil injection direction of the oil injection port on any connecting rod faces to the bottom of the piston on the other connecting rod. The oil injection direction and the corresponding piston bottom are favorable for controlling the oil injection direction to be injected to the piston bottom, so that the contact surfaces of the piston pin, the piston pin seat and the connecting rod small end are lubricated at the same time, and the piston bottom is cleaned in an impact manner.
Preferably, the oil hole on the crank pin extends to the center of the crank pin in the radial direction, the crank pin center is provided with an axial oil passage of the crank pin communicated with the oil hole, the crank throw of the crankshaft is provided with a radial oil passage of the crank throw communicated with the axial oil passage of the crank pin, and the radial oil passage of the crank throw is communicated with the central oil passage on the axis of the crankshaft. The oil hole on the crank pin is communicated with the crankshaft oil duct to lubricate the connecting rod cover at the big end of the connecting rod and the contact surface of the connecting rod body and the crankshaft, and meanwhile, after the oil hole is communicated with the oil groove and the oil injection port, lubricating oil in the oil duct can be sprayed to the bottom of the piston from the oil injection port.
The beneficial effects of the utility model are that, through setting up the fuel sprayer intercommunication that oil in the oil groove formed with the crank shaft hole and connecting rod body and connecting rod cap matched position, when the engine operation, the oil intermittent type nature of oil duct spouts to the piston bottom when rotating the three intercommunication, and oil strikes the piston bottom and cools off to the bottom, lubricates the contact surface of piston pin and piston pin boss, connecting rod microcephaly simultaneously, reduces the operating temperature of piston, improves gasoline engine life, simple structure, easy to carry out.
Drawings
FIG. 1 is a three-dimensional structure diagram of a crank link mechanism with a cooling oil passage according to the present invention;
FIG. 2 is an exploded view of the crank link mechanism with cooling oil passage according to the present invention;
FIG. 3 is a crankshaft structure view of the crank mechanism with cooling oil passage according to the present invention;
FIG. 4 is an exploded view of the crank link mechanism with cooling oil passage according to the present invention;
fig. 5 is a cross-sectional view of the left link oil spray of the crank link mechanism with the cooling oil passage according to the present invention;
fig. 6 is a right link oil spray cross-sectional view of the crank link mechanism with the cooling oil passage according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, which are not intended to limit the scope of the embodiments described herein.
The reference numbers in the specification include: the oil cylinder comprises a left cylinder piston 11, a left cylinder connecting rod 12, a left cylinder connecting rod oil groove 14, a first oil hole 15, a left cylinder connecting rod oil spray port 16, a left cylinder connecting rod oil spray direction 17, a right cylinder piston 21, a right cylinder connecting rod 22, a right cylinder connecting rod oil groove 24, a second oil hole 25, a right cylinder connecting rod oil spray port 26, a right cylinder connecting rod oil spray direction 27, a crankshaft 31, a piston pin 32, a cylinder wall 33, a connecting rod body 34, an oil groove 35, a connecting rod cover 36 and a connecting rod bolt 37.
Referring to fig. 1 to 6, a crank link mechanism with a cooling oil passage, which is applied to a V-type engine, includes two pistons, i.e., a left cylinder piston 11 and a right cylinder piston 21, two links, i.e., a left cylinder link 12 and a right cylinder link 22, and a crankshaft 31, an oil injection port, an oil hole, and an oil groove 35; the two connecting rods are arranged on a crank pin of the crankshaft 31 side by side, and the other ends of the connecting rods are connected with corresponding pistons; the crank pin of the crankshaft 31 is provided with two oil holes, the connecting rod is provided with the oil injection port and the oil groove 35, the oil injection port is communicated with the corresponding oil hole through the corresponding oil groove 35, and the oil groove 35 is in an incomplete annular structure; the oil injection direction of the oil injection port on any connecting rod faces to the piston on the other connecting rod.
The left cylinder connecting rod 12 comprises a connecting rod body 34 and a connecting rod cover 36, the left cylinder connecting rod 12 body and the left cylinder connecting rod cover are fixedly connected through a connecting rod bolt 37, the left cylinder connecting rod oil groove 24 is composed of two parts, one part is located on the left cylinder connecting rod body, and the other part is located on the left cylinder connecting rod cover. The left cylinder link oil groove 14 may also be provided on the left cylinder link body or on the left cylinder link cover. The left cylinder connecting rod oil nozzle is arranged at the gap where the left cylinder connecting rod cover and the left cylinder connecting rod body are combined. The arc length of the left cylinder connecting rod oil groove 14 is smaller than the arc length corresponding to the inner wall surface of the left cylinder connecting rod cover or the left cylinder connecting rod body. A circular sinking platform is arranged on the left cylinder connecting rod 12 cover, and the diameter of the circular sinking platform is larger than the diameter of a unthreaded hole formed in the left cylinder connecting rod cover and penetrated by the connecting rod bolt 37; and the oil nozzle of the left cylinder connecting rod is communicated with the oil groove 14 of the left cylinder connecting rod through the circular sinking platform. The oil spray direction 17 of the left cylinder connecting rod is towards the bottom of the right cylinder piston 21, and oil beams are sprayed from the oil spray port of the left cylinder connecting rod to the bottom of the right cylinder piston, a piston pin 32 and a cylinder wall 33 of a right cylinder. The right cylinder connecting rod 22 comprises a connecting rod body 34 and a connecting rod cover 36, the right cylinder connecting rod 22 body and the right cylinder connecting rod cover are fixedly connected through a connecting rod bolt 37, the right cylinder connecting rod oil groove 24 is composed of two parts, one part is located on the right cylinder connecting rod body, and the other part is located on the right cylinder connecting rod cover. The right cylinder link oil groove 24 may also be provided on the right cylinder link body or on the right cylinder link cover. The right cylinder connecting rod oil nozzle is arranged at the gap where the right cylinder connecting rod cover and the right cylinder connecting rod body are combined. The arc length of the right cylinder connecting rod oil groove 24 is smaller than the arc length corresponding to the inner wall surface of the right cylinder connecting rod cover or the right cylinder connecting rod body. The oil jet direction 27 of the right cylinder connecting rod faces to the bottom of the left cylinder piston 21, and oil beams are jetted from the oil jet of the right cylinder to the bottom of the left cylinder piston, a piston pin 32 and a cylinder wall 33 of the left cylinder. The first oil hole 15 or the second oil hole 25 on the crank pin radially extends to the center of the crank pin, the center of the crank pin is provided with a crank pin axial oil passage communicated with the oil holes, a crank throw radial oil passage communicated with the crank pin axial oil passage is arranged on a crank throw of the crankshaft, and the crank throw radial oil passage is communicated with a central oil passage on the axis of the crankshaft.
During operation, after the first oil hole 15 rotates to be communicated with the left connecting rod oil groove 35, lubricating oil is sprayed out from the left cylinder connecting rod oil spray opening, an oil beam impacts the bottom of the right cylinder piston 21 along the left cylinder connecting rod oil spray direction 17 to cool the bottom of the right cylinder piston 21, and meanwhile, the contact surface between the pin of the right cylinder piston 21 and the pin seat of the right cylinder piston 21 and the small end of the right cylinder connecting rod 22 is lubricated. When the first oil hole 15 is not communicated with the left cylinder link oil groove 14, the left cylinder link oil jet stops injecting oil to the bottom of the right cylinder piston 21. When the second oil hole 25 is communicated with the right cylinder connecting rod oil groove 24, the lubricating oil is sprayed out from the right cylinder connecting rod oil spray opening, the oil beam impacts the bottom of the left cylinder piston 11 along the right cylinder connecting rod oil spray direction 27 to cool the bottom of the left cylinder piston 11, and simultaneously, the contact surface of the pin of the left cylinder piston 11, the pin seat of the left cylinder piston 11 and the small end of the left cylinder connecting rod 12 is lubricated. When the second oil hole 25 is not communicated with the right cylinder connecting rod oil groove 24, the right cylinder connecting rod oil injection hole stops injecting oil to the bottom of the left cylinder piston.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A crank connecting rod mechanism with a cooling oil channel is characterized by comprising a left cylinder piston (11), a right cylinder piston (21), a left cylinder connecting rod (12), a right cylinder connecting rod (22), a crankshaft (31), an oil injection port, an oil hole and an oil groove (35); the two connecting rods are arranged on a crank pin of the crankshaft (31) side by side, and the other ends of the connecting rods are connected with corresponding pistons; the crank pin of the crankshaft (31) is provided with two oil holes, the connecting rod is provided with the oil injection port and the oil groove (35), the oil injection port is communicated with the corresponding oil hole through the corresponding oil groove (35), and the oil groove (35) is in an incomplete annular structure; the oil injection direction of the oil injection port on any connecting rod faces to the piston on the other connecting rod.
2. The crank-link mechanism with the cooling oil passage as recited in claim 1, wherein the connecting rod includes a connecting rod body (34) and a connecting rod cap (36), the connecting rod body (34) and the connecting rod cap (36) are fixedly connected by a connecting rod bolt (37), and the oil groove (35) is composed of two parts, one part is located on the connecting rod body (34) and the other part is located on the connecting rod cap (36).
3. Crank mechanism with cooling gallery according to claim 1, characterized in that the oil groove (35) is located on the connecting rod body (34) or on the connecting rod cover (36).
4. The crank mechanism with the cooling gallery according to claim 1, wherein the oil jet is provided at a gap where the connecting rod cap (36) and the connecting rod body (34) are combined.
5. The crank-link mechanism with the cooling oil passage as claimed in any one of claims 1 to 4, wherein the arc length of the oil groove (35) is smaller than the arc length corresponding to the connecting rod cover (36) or the inner wall surface of the connecting rod body.
6. The crank-link mechanism with the cooling oil passage as recited in claim 2, wherein the connecting rod cover (36) is provided with a circular sinking platform, and the diameter of the circular sinking platform is larger than the diameter of a unthreaded hole formed in the connecting rod cover (36) and through which the connecting rod bolt (37) passes; and the oil injection port is communicated with the oil groove (35) through the circular sinking platform.
7. The crank-link mechanism with the cooling oil passage according to any one of claims 1 to 4, wherein the oil injection port of any one of the connecting rods is directed toward the bottom of the piston of the other connecting rod.
8. The crank connecting rod mechanism with the cooling oil passage as claimed in any one of claims 1 to 4, wherein the oil hole on the crank pin extends radially to the center of the crank pin, the center of the crank pin is provided with an axial oil passage of the crank pin which is communicated with the oil hole, the crank throw of the crankshaft (31) is provided with a radial oil passage of the crank throw which is communicated with the axial oil passage of the crank pin, and the radial oil passage of the crank throw is communicated with the central oil passage on the axis of the crankshaft (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022170901.9U CN213175809U (en) | 2020-09-28 | 2020-09-28 | Crank link mechanism with cooling oil duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022170901.9U CN213175809U (en) | 2020-09-28 | 2020-09-28 | Crank link mechanism with cooling oil duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213175809U true CN213175809U (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022170901.9U Active CN213175809U (en) | 2020-09-28 | 2020-09-28 | Crank link mechanism with cooling oil duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213175809U (en) |
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2020
- 2020-09-28 CN CN202022170901.9U patent/CN213175809U/en active Active
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