Box cover with lubricating structure and engine

Abstract

The utility model provides a box cover with a lubricating structure, which comprises a cover body and the lubricating structure used for lubricating a crankshaft journal of an engine. The lubricating structure comprises an engine oil duct communicated with the lubricating part of the crankshaft journal, an engine oil pump for providing lubricating oil driving force for the engine oil duct and a pressure valve for automatically adjusting the oil pressure of lubricating oil pumped by the engine oil pump, the engine oil duct and the engine oil pump are both arranged on the cover body, and the pressure valve is arranged on the engine oil duct. The utility model further provides an engine which comprises the box cover with the lubricating structure. According to the box cover, the pressure valve is additionally arranged in the engine oil passage, so that the oil pressure can be automatically adjusted, the oil pressure is ensured to be within a safety range, and parts in an engine are prevented from being damaged by over-high or over-low pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of engine lubrication, in particular to a box cover with a lubrication structure and an engine. Background Art

[0002] Traditional engines use pressure to deliver lubricating oil to moving parts. The crankcase, consisting of a crankcase cover and a crankcase body, contains oil. When the engine is running, the oil pump within the crankcase generates oil pressure, which is delivered through the crankcase oil passages to the mounting base of the crankshaft journal, lubricating the friction surfaces of the crankshaft journal. However, under certain operating conditions, the oil pressure generated by the oil pump may be too high or too low, resulting in poor lubrication or system damage. Excessive oil pressure can damage seals and lines, or even cause oil leaks. Excessive oil pressure can lead to poor lubrication, increased wear, and shortened engine life. Utility Model Content

[0003] In response to the deficiencies in the prior art, the utility model provides a case cover and an engine with a lubrication structure to solve the technical problem in the prior art that, under certain working conditions, the oil pressure generated by the oil pump in the crankcase may be too high or too low during the operation of the engine, resulting in poor lubrication or system damage. That is, excessively high oil pressure may cause damage to seals and pipelines, and even cause oil leakage, while excessively low oil pressure may cause poor lubrication, aggravate wear, and shorten the life of the engine.

[0004] The first aspect of the present utility model provides a box cover with a lubrication structure, including a cover body and a lubrication structure for lubricating the crankshaft journal of the engine, the lubrication structure including an oil channel connected to the crankshaft journal lubrication part, an oil pump that provides lubricating oil driving force for the oil channel, and a pressure valve that automatically adjusts the oil pressure of the lubricating oil pumped out by the oil pump, the oil channel and the oil pump are both arranged on the cover body, and the pressure valve is arranged on the oil channel.

[0005] Furthermore, a cover plate is installed on the cover body, and the cover plate includes a cover plate oil channel; the engine oil channel includes an oil inlet channel connected to the oil outlet of the oil pump and an oil outlet channel connected to the oil outlet of the crankshaft journal for lubricating the oil, and the cover plate oil channel is used to connect the oil inlet channel and the oil outlet channel.

[0006] Furthermore, the cover plate includes a pressure valve mounting seat for mounting a pressure valve. The pressure valve mounting seat is arranged on the cover plate oil passage and divides the cover plate oil passage into a first branch oil passage and a second branch oil passage.

[0007] Furthermore, the cover plate includes an oil sensor mounting hole for mounting an oil sensor, and the oil sensor mounting hole is located on the first branch oil channel.

[0008] Furthermore, an oil filter is installed in the oil outlet passage.

[0009] Furthermore, the cover body is provided with a balance shaft journal mounting seat for mounting the balance shaft and a camshaft mounting seat for mounting the camshaft.

[0010] Furthermore, the cover body is provided with an oil coarse filter mounting hole for mounting an oil coarse filter.

[0011] Furthermore, the cover body is provided with a plurality of mounting holes and positioning pin holes for mounting on the engine.

[0012] Furthermore, it also includes a splash mechanism for splash lubrication of at least the crankshaft oil channel of the engine, the splash mechanism includes a gear installed on the oil pump, a flyweight rotatably connected to the transmission gear, a transmission shaft arranged on the transmission gear, and a push plate sleeved on the transmission shaft, and the transmission gear is connected to the camshaft.

[0013] A second aspect of the present invention provides an engine, comprising the above-mentioned tank cover with a lubricating structure, wherein the tank cover is arranged on the engine.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model has a box cover with a lubrication structure. After the oil pump is started, it begins to extract lubricating oil and transports it to the parts that need lubrication through the oil channel. The lubricating oil is transported to the crankshaft journal and other parts that need lubrication through the oil channel, forming an oil film to reduce friction. When the oil pressure is too high, the pressure valve opens and the excess oil flows back to the oil pan. When the oil pressure drops to a normal range, the pressure valve closes and the normal oil circuit is restored.

[0016] The box cover with a lubricating structure of the utility model can automatically adjust the oil pressure by adding a pressure valve in the oil channel of the engine oil, ensuring that the oil pressure is within a safe range and preventing excessively high or low pressure from causing damage to the internal parts of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a box cover with a lubrication structure according to an embodiment of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of a box cover with a lubrication structure according to an embodiment of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the structure of a box cover with a lubrication structure according to an embodiment of the present invention. Figure 3, showing a splash mechanism;

[0020] Figure 4 This is a structural diagram of a cover plate in a box cover with a lubrication structure according to an embodiment of the present invention;

[0021] Description of Figure Numbers:

[0022] 10. Cover; 11. Balance shaft journal mounting seat; 12. Camshaft mounting seat; 13. Oil filter mounting hole; 14. Mounting hole; 15. Dowel pin hole;

[0023] 20. Lubrication structure; 21. Oil channel; 211. Oil inlet channel; 212. Oil outlet channel; 22. Oil pump; 23. Crankshaft journal oil outlet;

[0024] 30. Cover plate; 31. Cover plate oil channel; 311. First branch oil channel; 312. Second branch oil channel; 32. Pressure valve mounting seat; 33. Oil sensor; 34. Oil sensor mounting hole;

[0025] 40. Splashing mechanism; 41. Gear; 42. Flying block; 43. Push plate.

[0026] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and beneficial effects of the present invention more clearly understood, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] In the description of the present invention, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of the present specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by those familiar with the technology, and are not intended to limit the applicable conditions of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, terms such as "upper", "lower", "left", "right", "middle", and "one" cited in the present specification are only for the convenience of description and are not intended to limit the applicable scope of the present invention. Changes or adjustments in their relative relationships should also be considered as the applicable scope of the present invention without substantially changing the technical content.

[0029] Example 1

[0030] like Figure 1-3 As shown, an embodiment of the present invention provides a case cover with a lubricating structure for sealing the crankcase of an engine. Specifically, the case cover includes a cover body 10 and a lubricating structure 20 for lubricating the crankshaft journal of the engine. The lubricating structure 20 includes an oil passage 21 for conveying lubricating oil connected to the lubrication part of the crankshaft journal, an oil pump 22 for providing lubricating oil driving force for the oil passage 21, and a pressure valve for automatically regulating the oil pressure of the lubricating oil pumped out by the oil pump 22. The oil passage 21 and the oil pump 22 are both arranged on the cover. On the body 10, the pressure valve is arranged on the oil channel 21. The pressure valve can automatically adjust the oil pressure to avoid damage to the system caused by excessive oil pressure, and at the same time ensure sufficient oil pressure to achieve the lubrication purpose. The oil pump 22 is installed on the cover body 10 through the oil pump 22 mounting seat. The oil pump 22 mounting seat is provided with an oil pump inlet connected to the oil inlet of the oil channel 21 and an oil pump outlet connected to the oil outlet. By installing the oil pump 22 in the box cover, its structure is compact, installation is convenient, and the oil supply stroke is short, which is conducive to maintaining the oil pressure.

[0031] In the embodiment of the present utility model, the oil pump 22 starts to extract lubricating oil after being started, and transports it to the parts that need lubrication through the oil channel 21. The lubricating oil is transported to the crankshaft journal and other parts that need lubrication through the oil channel 21, forming an oil film to reduce friction. When the oil pressure is too high, the pressure valve opens and the excess oil flows back. When the oil pressure drops to within the normal range, the pressure valve closes and the normal oil circuit is restored.

[0032] like Figure 1-3 As shown, in an embodiment of the present utility model, a cover plate 30 is installed on the cover body 10, and the cover plate 30 includes a cover plate oil passage 31; the engine oil passage 21 includes an oil inlet passage 211 connected to the oil outlet of the oil pump 22 and an oil outlet passage 212 connected to the oil outlet 23 for lubricating the crankshaft journal, and the cover plate oil passage 31 is used to connect the oil inlet passage 211 and the oil outlet passage 212. After the oil pump 22 is started, it begins to extract lubricating oil from the oil pan and transports it to the oil inlet passage 211 through the oil passage. The oil inlet passage 211 transports the lubricating oil to the cover plate oil passage 31, and the cover plate oil passage 31 further transports the lubricating oil to the oil outlet passage 212.

[0033] like Figure 1-3As shown, in an embodiment of the present utility model, the cover plate 30 includes a pressure valve mounting seat 32 for mounting a pressure valve. The pressure valve mounting seat 32 is arranged on the cover plate oil channel 31 and divides the cover plate oil channel 31 into a first branch oil channel 311 and a second branch oil channel 312. When the oil pressure exceeds a preset value, the pressure valve opens and the lubricating oil can flow back to the oil pan or other designated locations through the second branch oil channel 312. When the oil pressure drops to a normal range, the pressure valve closes and the lubricating oil continues to flow to the oil outlet channel 212 through the first branch oil channel 311 and is then transported to parts that require lubrication, such as the crankshaft journal. At the same time, the cover plate 30 facilitates the installation and maintenance of the pressure valve.

[0034] like Figure 1-3 As shown, in an embodiment of the present utility model, the cover plate 30 includes an oil sensor mounting hole 34 for mounting an oil sensor 33. The oil sensor mounting hole 34 is located on the first branch oil channel 311. The oil sensor 33 is mounted in the oil sensor mounting hole 34 and can monitor the state of the oil entering the lubrication system in real time, such as oil pressure, oil temperature or oil quality, so as to detect potential problems early and improve the reliability and safety of the system, that is, send data to the engine control unit (ECU) or other monitoring equipment. When the oil pressure is abnormal, the oil sensor 33 can issue an alarm in time to remind the driver to check and repair to prevent further damage. At the same time, the cover plate 30 facilitates the installation and maintenance of the oil sensor 33.

[0035] like Figure 1-3 As shown, in the embodiment of the present invention, an oil filter is installed in the oil outlet passage 212. The oil filter ensures that the lubricating oil has been filtered before entering the lubrication part, reducing wear and other mechanical failures caused by impurities. That is, when the lubricating oil passes through the oil outlet passage 212, it is filtered by the oil filter to remove impurities in the oil and ensure the cleanliness of the lubricating oil. The lubricating oil filtered by the filter is transported to the crankshaft journal and other parts that need lubrication through the oil outlet passage 212, forming an oil film to reduce friction.

[0036] like Figure 1-3 As shown, in the embodiment of the present invention, the cover body 10 is provided with a balance shaft journal mounting seat 11 for mounting a balance shaft and a camshaft mounting seat 12 for mounting a camshaft. The installation of the balance shaft helps to reduce the vibration of the engine and improve the stability of the engine operation, while the accurate installation of the camshaft ensures the accuracy of the valve timing and ensures that it can accurately control the opening and closing of the valve during the operation of the engine.

[0037] like Figure 1-3As shown, in the embodiment of the present invention, the cover body 10 is provided with an oil coarse filter mounting hole 13 for mounting an oil coarse filter. By integrating the oil coarse filter mounting hole 13 on the cover body 10, it is ensured that the lubricating oil has been preliminarily filtered before entering the engine, thereby improving the overall performance and service life of the engine. At the same time, combined with fine filtration, impurities in the lubricating oil can be effectively removed, reducing wear and other mechanical failures caused by impurities.

[0038] like Figure 1-3 As shown, in an embodiment of the present utility model, the cover body 10 is provided with a plurality of mounting holes 14 and locating pin holes 15 for installation on the engine. The mounting holes 14 are used to fix the connecting bolts between the cover body 10 and other engine components to ensure a tight connection between the cover body 10 and other components to prevent loosening due to engine vibration. At the same time, it is also convenient for installation and disassembly to facilitate maintenance of internal components. The locating pin holes 15 are used to insert locating pins to ensure precise alignment between the cover body 10 and other components, prevent the cover body 10 from being misplaced during installation, and ensure that the various components can be correctly docked.

[0039] like Figure 4 As shown, in an embodiment of the present invention, a splash mechanism 40 is further included for splash lubrication of at least the crankshaft oil passage of the engine. The splash mechanism 40 includes a gear 41 installed on the oil pump 22, a flyweight 42 rotatably connected to the transmission gear 41, a transmission shaft arranged on the transmission gear 41, and a push plate 43 sleeved on the transmission shaft. The transmission gear 41 is connected to the camshaft for transmission, and the gear 41 rotates as the camshaft rotates, and drives the oil pump 22 to deliver lubricating oil. At the same time, the flyweight 42 opens outward under the action of centrifugal force, and the flyweight 42 throws the lubricating oil to the crankshaft oil passage and other parts that need lubrication when rotating. The flyweight 42 also opens or closes according to the speed, driving the push plate 43 to move forward or backward on the transmission shaft. The push plate 43 then pushes the speed control fork to shift the oil quantity control lever of the injection pump to adjust the oil supply of the injection pump, thereby adjusting the engine speed and achieving quantitative lubrication according to the engine speed.

[0040] Example 2

[0041] An embodiment of the present utility model provides an engine, comprising a tank cover with a lubricating structure 20 as described in the above-mentioned embodiment 1, wherein the tank cover is arranged on the engine, wherein the specific structure of the tank cover with the lubricating structure 20 refers to the above-mentioned embodiment 1. Since this engine adopts all the technical solutions of the above-mentioned embodiment 1, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiment 1, which will not be repeated here one by one.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not a barrier. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A box cover with a lubricating structure, characterized in that: The invention comprises a cover body (10) and a lubricating structure (20) for lubricating the crankshaft journal of an engine, wherein the lubricating structure (20) comprises an engine oil passage (21) connected to the crankshaft journal lubrication portion, an engine oil pump (22) for providing lubricating oil driving force for the engine oil passage (21), and a pressure valve for automatically regulating the oil pressure of the lubricating oil pumped by the engine oil pump (22), wherein the engine oil passage (21) and the engine oil pump (22) are both arranged on the cover body (10), and the pressure valve is arranged on the engine oil passage (21).

2. The box cover with a lubricating structure according to claim 1, characterized in that: A cover plate (30) is mounted on the cover body (10), and the cover plate (30) includes a cover plate oil passage (31); the engine oil passage (21) includes an oil inlet passage (211) connected to the oil outlet of the engine oil pump (22) and an oil outlet passage (212) connected to the oil outlet of the crankshaft journal (23) for lubricating the engine oil; the cover plate oil passage (31) is used to connect the oil inlet passage (211) and the oil outlet passage (212).

3. The box cover with a lubricating structure according to claim 2, characterized in that: The cover plate (30) comprises a pressure valve mounting seat (32) for mounting a pressure valve. The pressure valve mounting seat (32) is arranged on the cover plate oil passage (31) and divides the cover plate oil passage (31) into a first branch oil passage (311) and a second branch oil passage (312).

4. The box cover with a lubricating structure according to claim 3, characterized in that: The cover plate (30) comprises an oil sensor mounting hole (34) for mounting an oil sensor (33), and the oil sensor mounting hole (34) is located on the first branch oil channel (311).

5. The box cover with a lubricating structure according to claim 2, characterized in that: An oil filter is installed in the oil outlet passage (212).

6. The box cover with a lubricating structure according to claim 1, characterized in that: The cover body (10) is provided with a balancing shaft journal mounting seat (11) for mounting a balancing shaft and a camshaft mounting seat (12) for mounting a camshaft.

7. The box cover with a lubricating structure according to claim 1, characterized in that: The cover body (10) is provided with an oil coarse filter mounting hole (13) for mounting an oil coarse filter.

8. The box cover with a lubricating structure according to claim 1, characterized in that: The cover body (10) is provided with a plurality of mounting holes (14) and positioning pin holes (15) for mounting on an engine.

9. An engine according to any one of claims 1 to 8, characterized in that: The invention also includes a splash mechanism (40) for splash lubrication of at least the crankshaft oil passage of the engine, wherein the splash mechanism (40) includes a gear (41) mounted on the oil pump (22), a flyweight (42) rotatably connected to the transmission gear (41), a transmission shaft arranged on the transmission gear (41), and a push plate (43) sleeved on the transmission shaft, wherein the transmission gear (41) is connected to the camshaft in a transmission manner.

10. An engine, characterized in that: The invention comprises a tank cover with a lubricating structure as claimed in claim 9, wherein the tank cover is provided on the engine.

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