CN218522706U - Lubricating oil supply system for main bearing of diesel engine - Google Patents
Lubricating oil supply system for main bearing of diesel engine Download PDFInfo
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- CN218522706U CN218522706U CN202223116063.2U CN202223116063U CN218522706U CN 218522706 U CN218522706 U CN 218522706U CN 202223116063 U CN202223116063 U CN 202223116063U CN 218522706 U CN218522706 U CN 218522706U
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Abstract
The application discloses a main bearing lubricating oil supply system of a diesel engine, which comprises a machine body and a main bearing, wherein a main bearing cover is arranged on the machine body, a bolt hole is formed in the main bearing cover, a bolt penetrates through the bolt hole, the main bearing cover is fixed on the machine body through the bolt and a nut matched with the bolt for use, the middle part of the bolt is arranged at intervals with the bolt hole, two ends of the bolt are arranged in a sealing manner, a circumferential oil groove is formed in the inner wall of the middle part of the main bearing cover and is communicated with the bolt hole through a communication groove in the main bearing cover, an oil duct communicated with the bolt hole is also arranged on the main bearing cover, and the end part of the oil duct, which deviates from the bolt hole, is connected with a lubricating oil duct; wherein, both the intercommunication groove and the junction of oil duct and bolt hole all are located bolt and bolt hole interval and set up the department. The supply system arranged by the mode can effectively reduce the number of special oil ducts, effectively reduce the casting difficulty and the processing difficulty of the engine body, and reduce the cost.
Description
Technical Field
The application relates to the technical field of diesel engines, in particular to a lubricating oil supply system for a main bearing of a diesel engine.
Background
The main bearing of the diesel engine is one of key parts of the diesel engine, and has close relation to the reliability and the service life of the diesel engine. The main bearing is under the dynamic load action of the impulsive gas explosion pressure and the crankshaft rotation inertia force in the working process, the working condition is complex and severe, the load is heavy, and the surface can generate a large amount of friction heat, so that enough lubricating oil is needed to cool the main bearing through the friction surface, and the bearing is in complete liquid friction to avoid dry friction and damage to the bearing. At present, most of main bearing lubricating oil supply systems adopt that a longitudinal main lubricating oil channel hole is arranged in a machine body, and then all main bearings are lubricated through all branch lubricating oil channel holes. The main oil duct hole needs to penetrate through the whole machine body, the difficulty of machine body casting technology is increased, the defects of sand inclusion, shrinkage porosity and the like are easily formed, the risk of lubricating oil leakage is caused, meanwhile, special processing equipment or a cutter needs to be customized during hole processing, and the manufacturing cost and the processing difficulty are greatly improved.
Therefore, in order to solve the above technical problems, it is a technical problem to be solved by those skilled in the art to design a lubricating oil supply system for a main bearing of a diesel engine, which reduces the number of dedicated oil passages and reduces the casting difficulty and machining difficulty of the engine block.
Disclosure of Invention
The utility model aims at providing a diesel engine main bearing lubricating oil feed system, this system can effectively reduce the quantity of special oil duct, has effectively reduced the casting degree of difficulty and the processing degree of difficulty of organism, the cost is reduced.
In order to achieve the purpose, the application provides a lubricating oil supply system for a main bearing of a diesel engine, which comprises a machine body and a main bearing arranged on the machine body, wherein a main bearing cover for axially positioning the main bearing is arranged on the machine body, bolt holes are formed in the main bearing cover, bolts penetrate through the bolt holes, the main bearing cover is fixed on the machine body through the bolts and nuts matched with the bolts for use, the middle parts of the bolts are arranged at intervals with the bolt holes, two ends of the bolts are arranged in a sealing manner, a circumferential oil groove is formed in the middle part of the main bearing cover and used for being sleeved on the inner wall of the periphery of the main bearing, the circumferential oil groove is communicated with the bolt holes through a communication groove in the main bearing cover, an oil duct communicated with the bolt holes is further arranged on the main bearing cover, and the end part of the oil duct deviates from the bolt holes and is connected with a lubricating oil duct;
the connecting parts of the communicating groove and the bolt hole and the connecting parts of the oil passage and the bolt hole are both located at the positions where the bolt and the bolt hole are arranged at intervals, and the bolt hole which are arranged at intervals are used for communicating the oil passage and the communicating groove.
Preferably, the oil passage includes:
the vertical oil duct is positioned on the main bearing cover and is communicated with the lubricating oil duct;
and the side pulling bolt hole is intersected with the bolt hole, a side pulling bolt is arranged in the side pulling bolt hole, and a screw rod part of the side pulling bolt is arranged at an interval with the side pulling bolt hole and is used for communicating the bolt hole with the vertical oil duct.
Preferably, the lubricating oil gallery includes:
the branch oil duct is communicated with the vertical oil duct through a clamping sleeve and is used for injecting lubricating oil into the vertical oil duct;
and the main oil passage is positioned outside the engine body and is used for communicating the branch oil passages and providing lubricating oil for the branch oil passages.
Preferably, in the axial direction of the bolt hole, the communication groove is located above the oil passage, the lubricating oil is injected into the bolt hole from bottom to top, and when reaching the communication groove, the lubricating oil enters the circumferential oil groove through the communication groove.
Preferably, the screw rod parts at two ends of the bolt are in threaded connection with the bolt hole, a first sealing ring is arranged at the joint of the bolt head of the bolt and the main bearing cover, and a second sealing ring is arranged at the joint of the nut and the main bearing cover.
Preferably, the circumferential oil groove is formed in the periphery of the main bearing, and lubricating oil enters the oil filling hole of the main bearing through the circumferential oil groove and is uniformly distributed on the inner surface of the main bearing.
Preferably, the number of the bolts and the number of the bolt holes are two, and the two bolts and the two bolt holes are respectively located at two sides of the main bearing and used for fixing the main bearing cover on the machine body.
For above-mentioned background art, the application provides a diesel engine main bearing lubricating oil feed system, this system passes through the bolt and the bolt hole fixes the main bearing cap on the organism, and simultaneously, the middle part screw part of bolt sets up with the bolt hole interval, the interval has sufficient sectional area, can supply lubricating oil to flow and supply, lubricating oil passes through in the lubricating oil duct gets into the oil duct, get into in the interval of bolt and bolt hole by the oil duct again, get in the intercommunication groove gets into the circumference oil groove by communicateing with the bolt hole again, the oil groove evenly distributed of the oilhole of rethread main bearing and main bearing is in the main bearing internal surface, thereby lubricate the main bearing. Specifically speaking, this system has sufficient sectional area through the clearance of rational design bolt hole and bolt, satisfies the flow of lubricating oil and supplies with, has borrowed partial bolt hole, pours lubricating oil into circumference oil groove through the bolt hole to get into the main bearing internal surface, realize the lubrication to the main bearing, compare traditional lubricating oil feed system, drill on the organism as the oil duct, this application has reduced special lubricated oil duct quantity, arranges more succinctly.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating an overall structure of a main bearing lubricant supply system of a diesel engine according to an embodiment of the present application;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic view of a connection structure between an oil passage and a bolt hole of a main bearing oil supply system of a diesel engine according to an embodiment of the present application.
In the figure: 1. the main oil gallery structure comprises a machine body 2, a main bearing 3, a main bearing cover 4, a bolt 5, a nut 6, a branch oil gallery 7, a main oil gallery 101, a bolt hole 102, a communicating groove 103, a circumferential oil groove 301, a vertical oil gallery 302 and a side pull bolt hole.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to enable those skilled in the art to better understand the scheme of the present application, the present application will be described in further detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 3, in the present embodiment, a main bearing lubricating oil supply system for a diesel engine is provided, which includes a machine body 1 and a main bearing 2 disposed on the machine body 1, the main bearing 2 is located in a main bearing hole of the machine body 1, and the main bearing 2 is axially located by a main bearing cap 3, a bolt hole 101 is disposed on the main bearing cap 3, a bolt 4 is disposed in the bolt hole 101, and the main bearing cap 3 is fixed on the machine body 1 by the bolt 4 and a nut 5 used in cooperation with the bolt 4; it should be noted that, the screw rod in the middle of the bolt 4 is spaced from the bolt hole 101, so that the lubricating oil can conveniently circulate from the bolt hole 101, and in order to ensure the sealing effect of the lubricating oil, in this embodiment, the two ends of the bolt 4 can be sealed.
In order to reach the lubricated effect of main bearing 2, be provided with circumference oil groove 103 on main bearing cap 3, circumference oil groove 103 is located main bearing 2 periphery to circumference oil groove 103 communicates with bolt hole 101 through the intercommunication groove 102 on main bearing cap 3, thereby can be with the leading-in circumference oil groove 103 of entering of the lubricating oil of circulation in the bolt hole 101, thereby lubricate main bearing 2 through circumference oil groove 103. Of course, an oil passage is connected with the bolt hole 101, the end of the oil passage, which is away from the bolt hole 101, is connected with a lubricating oil passage, lubricating oil is injected into the oil passage through the lubricating oil passage, and then the lubricating oil is injected into the bolt hole 101 through the oil passage.
It should be noted that the connection points between the communication groove 1002 and the oil passage and the bolt hole 101 are located at the positions where the bolts 4 and the bolt holes 101 are spaced apart, and the bolts 4 and the bolt holes 101 spaced apart are used for communicating the oil passage and the communication groove 102.
Synthesize above-mentioned embodiment, the application provides a diesel engine main bearing lubricating oil feed system, this system passes through bolt 4 and bolt hole 101 and fixes main bearing cap 3 on organism 1, and simultaneously, the middle part screw part and the bolt hole 101 interval of bolt 4 set up, the interval has sufficient sectional area, can supply lubricating oil to flow and supply with, lubricating oil passes through in the lubricated oil duct gets into the oil duct, again by the oil duct get into in the interval of bolt 4 and bolt hole 101, get into circumference oil groove 103 by communicating with bolt hole 101 again in getting intercommunication groove 102, the oil groove evenly distributed of the oilhole of rethread main bearing 2 and main bearing 2 is in main bearing 2 internal surfaces, thereby lubricate main bearing 2.
Specifically speaking, the system has enough sectional area through the clearance of reasonable design bolt hole 101 and bolt 4, satisfies the mobile supply of lubricating oil, has borrowed partial bolt hole 101, pours into circumference oil groove 103 with lubricating oil through bolt hole 101 to get into main bearing 2 internal surface, realize the lubrication to main bearing 2, compare traditional lubricating oil supply system, bore a hole on the organism 1 as the oil duct, this application has reduced special lubricating oil duct quantity, arranges more succinctly.
Further, the oil passages comprise a vertical oil passage 301 and a side pull bolt hole 302, the vertical oil passage 301 is located on the main bearing cover 3, meanwhile, the vertical oil passage 301 is communicated with a lubricating oil passage, and lubricating oil is filled into the oil passages through the lubricating oil passage. The side pull bolt hole 302 is located on the main bearing cover 3, the side pull bolt hole 302 is intersected with the bolt hole, a side pull bolt is arranged in the side pull bolt hole 302, and a screw portion of the side pull bolt is arranged at an interval with the side pull bolt hole 302 and used for communicating the bolt hole 101 with the vertical oil duct 301.
For the lubricating oil channel, the lubricating oil channel comprises a plurality of branch oil channels 6 and a main oil channel 7, the number of the branch oil channels 6 is set according to different numbers of main bearings 2 of the diesel engine, and the branch oil channels 6 are communicated with the vertical oil channel 301 through clamping sleeves and used for injecting lubricating oil into the vertical oil channel 301. Meanwhile, the main oil gallery 7 is located outside the machine body 1, the main oil gallery 7 can be communicated with the branch oil galleries to provide lubricating oil for the branch oil galleries 6, and in the embodiment, the main oil gallery 7 and the branch oil galleries 6 are externally arranged, so that the casting and machining difficulty of the machine body 1 is reduced.
It should be noted that, in this embodiment, in order to enable the lubricating oil to stably and continuously enter the communication groove 102 and ensure the lubricating effect of the main bearing 2, in the axial direction of the bolt hole 101, the communication groove 102 is located above the oil passage, that is, after the lubricating oil enters the bolt hole 101 through the oil passage, the lubricating oil is injected into the bolt hole 101 from the lower portion of the bolt hole 101, as the amount of the lubricating oil in the bolt hole 101 increases, the level of the lubricating oil rises, and after the position of the communication groove 102 is reached, the lubricating oil enters the circumferential oil groove 103 through the communication groove 102, so that the oil injection to the main bearing 2 is completed.
In order to ensure the sealing performance and stability of the bolt 4, the screw rod parts at the two ends of the bolt 4 are in threaded connection with the bolt hole 101, so that the bolt can be used for stably fixing the main bearing cap 3 on the machine body 1, meanwhile, a first sealing ring is arranged at the joint of the bolt head of the bolt 4 and the main bearing cap 3, a second sealing ring is arranged at the joint of the nut 5 and the main bearing cap 3, and the two ends of the bolt 4 are sealed to prevent oil leakage.
Further, the number of the bolts 4 and the bolt holes 101 is two, and the two bolts are respectively located at two sides of the main bearing 2 for fixing the main bearing cap 3 on the machine body 1, and detailed description is omitted here.
It should be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (7)
1. A lubricating oil supply system for a main bearing of a diesel engine comprises a machine body and the main bearing arranged on the machine body, wherein a main bearing cover for axially positioning the main bearing is arranged on the machine body, the lubricating oil supply system is characterized in that bolt holes are formed in the main bearing cover, bolts penetrate through the bolt holes, the main bearing cover is fixed on the machine body through the bolts and nuts matched with the bolts, the middle parts of the bolts are arranged at intervals with the bolt holes, two ends of the bolts are arranged in a sealing mode, a circumferential oil groove is formed in the middle part of the main bearing cover and used for being sleeved on the inner wall of the periphery of the main bearing, the circumferential oil groove is communicated with the bolt holes through a communication groove in the main bearing cover, an oil duct communicated with the bolt holes is further formed in the main bearing cover, and the end, away from the bolt holes, of the oil duct is connected with a lubricating oil duct;
the connecting parts of the communicating groove and the bolt hole and the connecting parts of the oil passage and the bolt hole are both located at the positions where the bolt and the bolt hole are arranged at intervals, and the bolt hole which are arranged at intervals are used for communicating the oil passage and the communicating groove.
2. The diesel engine main bearing oil supply system of claim 1, wherein the oil gallery comprises:
the vertical oil duct is positioned on the main bearing cover and is communicated with the lubricating oil duct;
and the side pulling bolt hole is intersected with the bolt hole, a side pulling bolt is arranged in the side pulling bolt hole, and a screw rod part of the side pulling bolt is arranged at an interval with the side pulling bolt hole and is used for communicating the bolt hole with the vertical oil duct.
3. The diesel engine main bearing lubricant supply system of claim 2, wherein the lubricant gallery comprises:
the branch oil duct is communicated with the vertical oil duct through a clamping sleeve and is used for injecting lubricating oil into the vertical oil duct;
the main oil gallery is located outside the engine body and used for communicating a plurality of branch oil galleries and providing lubricating oil for the plurality of branch oil galleries.
4. The diesel engine main bearing oil supply system according to claim 1, wherein the communication groove is located above the oil passage in the bolt hole axial direction, and the lubricating oil is injected into the bolt hole from below to above, and when reaching the communication groove, the lubricating oil enters the circumferential oil groove through the communication groove.
5. The diesel main bearing oil supply system of claim 1, wherein the bolt has a bolt portion at each end thereof threadedly coupled to the bolt hole, and wherein a first seal ring is disposed at a junction of the bolt head and the main bearing cap, and a second seal ring is disposed at a junction of the nut and the main bearing cap.
6. The diesel main bearing lubricant supply system of claim 1, wherein the circumferential oil groove is located at an outer periphery of the main bearing, and lubricant oil enters the oil holes of the main bearing through the circumferential oil groove and is evenly distributed on an inner surface of the main bearing.
7. The diesel engine main bearing oil supply system of claim 1, wherein the number of bolts and bolt holes is two, one on each side of the main bearing, for securing the main bearing cap to the block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223116063.2U CN218522706U (en) | 2022-11-23 | 2022-11-23 | Lubricating oil supply system for main bearing of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223116063.2U CN218522706U (en) | 2022-11-23 | 2022-11-23 | Lubricating oil supply system for main bearing of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218522706U true CN218522706U (en) | 2023-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223116063.2U Active CN218522706U (en) | 2022-11-23 | 2022-11-23 | Lubricating oil supply system for main bearing of diesel engine |
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| CN (1) | CN218522706U (en) |
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- 2022-11-23 CN CN202223116063.2U patent/CN218522706U/en active Active
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