TWI547635B - Engine oil structure - Google Patents

Description

Engine oily structure

The invention relates to a structure of a locomotive engine gearbox, in particular to a fuel-tight structure of an engine.

At present, the oil-running structure of the prior art engine gearbox is provided with a box body, a gear set, a fuel supply port, an oil storage tank and an oil suction port; the gear set is arranged in the box body, and the oil supply port is arranged on the spindle of the gear set, and The oil can be continuously supplied to the gear set for lubrication by splashing; the oil storage tank is arranged at the bottom of the inner space of the tank and transports the oil to the oil supply port through the oil passage; the oil suction port is arranged in the tank body and can be used for the oil storage tank in the tank body The accumulated lubricant is transported to the fuel supply port.

In the oil-straining structure of the prior art engine gearbox, since the oil supply port is provided on the spindle of the gear set, when the mandrel rotates, the lubricating oil can be spouted from the oil supply port and splashed to the other in the engine gearbox. Gears achieve the purpose of lubricating the gear set. Although the gear set can be splashed as a whole and in a wide range, the way of splashing is not very stable to the lubrication of the gear, and sometimes it is not flying, that is, no oil is available for lubrication. Therefore, the amount of oil that is lubricated by splash alone is insufficient. The lubrication effect is not good and it is easy to cause gear wear.

For other types of engine gear transmissions, please refer to Japanese Patent No. JP4035226 and JP2008-144900. The gear set is placed near the bottom of the box, and the gears of the gear set are immersed in the oil reservoir. In the oil, although the gear set can be directly lubricated, it is directly lubricated only for a single gear, and there is no structure for splashing the lubricating oil, and the lubricating oil is splashed over the entire gear train. Moreover, since the lubricating oil has a certain viscosity and the teeth of the gear set are infiltrated into the depth of the oil too much, the oil in the oil reservoir causes the impedance to be excessive when the gear rotates, and the oil is easily heated and deteriorated, which is necessary for improvement.

In order to solve the oil-oil structure of the prior art engine gearbox, there is a deficiency and limitation that the direct wetting gear cannot be simultaneously achieved, and the lubricating oil is splashed on the gear train as a whole and in a wide range. An object of the present invention is to provide a fuel-tight structure of an engine, which is provided with a first oil storage tank and a second oil storage tank, and the oil of the first oil storage tank is transported to the oil supply port to lubricate the gear set by splashing or dripping. Or the oil is directly outputted into the second oil storage tank, and the oil in the second oil storage tank directly infiltrates the gear set, thereby achieving the purpose of simultaneously directly wetting the gear set and allowing the lubricating oil to splash on the gear unit as a whole and in a wide range.

The technical means used in the present invention is to provide a lubricating structure for an engine, comprising: a box body; a gear set disposed in the box body and including a first shaft, a first gear, a second shaft, and a a second gear, a third shaft and a third gear, wherein the first shaft, the second shaft and the third shaft are disposed in the casing, and the first gear, the second gear and the third gear are respectively sleeved Provided in the first shaft, the second shaft, and the third shaft, wherein the second gear includes a large toothed disk portion and a small toothed disk portion, the large toothed disk portion having a larger diameter than the small toothed portion The large toothed disc portion meshes with the third gear, the small toothed disc portion meshes with the first gear; at least one of the gear set is defined as a wetting gear; and a first oil reservoir is disposed on the gear The bottom of the group is located at the bottom of the box and is provided with an oil suction port formed in the first oil storage tank; a second oil storage tank is disposed below the wetting gear, and the second oil storage tank is located at the first Above the oil storage tank, the second oil storage tank forms a circulation end at the edge of the groove, wherein the infiltration tooth The lowermost tooth has a lower tooth peak than the flow end of the second oil reservoir; an oil supply port that supplies lubricating oil to the gear set, wherein the second oil storage tank can accumulate and output through the oil supply port Lubricating oil, and the tooth peak of the lowermost tooth of the wetting gear can be infiltrated into the lubricating oil of the second oil storage tank; and an oil pump that communicates with the first oil storage tank and the oil supply port via an oil passage, respectively The oil of the first oil storage tank can be transported to the oil supply port.

a lubricating oil structure of the engine, wherein a second oil level is formed on a liquid surface of the lubricating oil immersed in the oil storage tank, and a tooth peak at a lowermost portion of the wetting gear is infiltrated in the second oil storage tank, the lowest of the wetting gear The distance between the tooth peak and the second oil level is 0.5 to 2 times the tooth height of the wetting gear.

In the oil-tight structure of the engine, the distance between the lowest peak of the wetting gear and the second oil surface is one times the tooth height of the wetting gear.

In the oil-tight structure of the engine, the second oil storage tank includes an oil storage rib connected to inner wall surfaces of the two sides of the casing.

In the oil-saturated structure of the engine, a liquid level of the lubricating oil in the first oil storage tank forms a first oil surface, and a height of a bottom surface of the inner wall of the second oil storage tank is higher than the first oil surface.

The oily construction of the engine, wherein the oil supply port is located at at least one gear shaft of the gear set or the second oil storage tank.

The oily construction of the engine, wherein the oil supply port is located at the top of the tank and above the gear set.

The oily construction of the engine, wherein the flow end of the second oil storage tank is not higher than the gear shaft of the wetting gear.

The specific benefits and enhancements that can be obtained by the oil-lubricating structure of the engine provided by the present invention include at least:

1. The lubricating effect is excellent: the invention can directly infiltrate the tooth portion of the gear set which is disposed far from the bottom of the first oil storage tank of the box body to the lubricating oil, so that the gear set can obtain stable and continuous lubricating effect, and can The teeth of the gear set are lubricated on average.

2. Reduce the impedance: because the distance between the tooth peak of the lowermost tooth of the second gear and the second oil surface is 0.5 to 2 times the tooth height of the second gear, the lowermost tooth of the second gear is infiltrated with the oil. The depth is shallower, whereby the second gear rotates with less impedance, the oil is not easily deteriorated, and the best splash effect can be achieved.

3. Cost reduction: Since the present invention can efficiently lubricate the gear set evenly, the amount of lubricating oil can be reduced, the pump volume can be reduced, the loss can be reduced, and the cost can be reduced.

In order to understand the technical features and practical functions of the present invention in detail, and in accordance with the contents of the specification, the following is further illustrated in the preferred embodiment as illustrated in the following:

A preferred embodiment of the oil-lubricating structure of the engine provided by the present invention, as shown in FIGS. 1 to 3, includes: a casing 10, a gear set 20, a first oil storage tank 32, and a second oil storage tank. 40, an oil supply port 50 and an oil pump 60 and the like, wherein: as shown in FIG. 2 and FIG. 3, the casing 10 includes a left casing 11, a right casing 12 and an outer cover 13, the left casing The body 11 is laterally disposed with two oil holes 111 extending in a manner, and the right casing 12 and the outer cover 13 are respectively covered and fixed to the opposite sides of the left casing 11.

As shown in FIG. 2 and FIG. 4 , the gear set 20 is disposed in the casing 10 and includes a first shaft 21 , a first gear 22 , a second shaft 23 , a second gear 24 , and a third shaft . 25 and a third gear 26, the first shaft 21, the second shaft 23 and the third shaft 25 are disposed in the casing 10, the first gear 22, the second gear 24 and the third gear 26 is sleeved on the first shaft 21, the second shaft 23 and the third shaft 25, wherein the second gear 24 includes a large toothed disc portion 241 and a small toothed disc portion 242, the large toothed disc portion The diameter of the 241 is larger than the small toothed portion 242, and the large toothed portion 241 is meshed with the third gear 26, and the small toothed portion 242 is meshed with the first gear 22; the number of gears of the gear set 20 is two or more However, the purpose of shifting can be achieved, and the present invention does not impose any particular limitation on the number of gears.

As shown in FIG. 2 to FIG. 4, an oil chamber 31 and a first oil reservoir 32 are formed under the casing 10, and the oil chamber 31 is formed at the bottom of the space between the left casing 11 and the right casing 12. As shown in FIG. 2 and FIG. 6 , the first oil storage tank 32 is formed at the bottom of the space between the left casing 11 and the outer cover 13 , and the oil chamber 31 and the first oil storage tank 32 respectively The oil hole 111 is communicated, and the oil chamber 31 and the first oil storage tank 32 are respectively lower than the gear set 20. The first oil storage tank 32 is provided with an oil suction port 321 at the bottom, and the oil suction port 321 can be the first oil storage tank 32. The lubricating oil accumulated in the oil is pumped to the oil supply port 50 by the oil pump 60; since the oil chamber 31 communicates with the first oil reservoir 32 through the oil hole 111, the lubricating oil of the oil chamber 31 can flow to the first oil storage tank 32.

As shown in FIG. 2 to FIG. 4, the second oil storage tank 40 includes two oil storage ribs 41 which are butted against each other, and the two oil storage ribs 41 are respectively formed by the inner wall surface of the left casing 11 and the inner wall surface of the right casing 12. The second oil reservoir 40 is disposed below the large gear portion 241 of the second gear 24, and the height of the second oil reservoir 40 is higher than the first oil reservoir 32, the second oil reservoir 40, a flow end 42 is formed at the edge of the groove, wherein the tooth peak 24111 of the lowermost tooth 2411 of the large toothed portion 241 is lower than the flow end 42 of the second oil reservoir 40, as shown in FIG.

Wherein at least one gear of the gear set 20 of the present invention is defined as a wetting gear (that is, the wetting gear includes more than one gear), and the tooth peak of the lowermost tooth of the wetting gear is lower than the circulating end of the second oil reservoir 40 42. The wetting gear in the first preferred embodiment of the present invention is the second gear 24.

The wetting gear may be the first gear 22, the second gear 24 or the third gear 26. The present invention does not specifically limit which gear is used as the wetting gear, as long as at least one gear of the gear set 20 is infiltrated into the second oil reservoir 40. Just fine. The infiltration gear may also include two gears. For example, the first gear 22 and the second gear 24 are all infiltrated in the second oil reservoir 40, and the invention is not limited thereto.

In addition, the flow end 42 of the second oil storage tank 40 is not higher than the gear shaft of the wetting gear, that is, when the wetting gear is the second gear 24, the gear shaft of the wetting gear is now the second shaft 23; when the wetting gear When it is the first gear 22, the gear shaft of the wetting gear is now the first shaft 21.

The oil supply port 50 is located on at least one gear shaft of the gear set 20, that is, the oil supply port 50 is located at the first shaft 21 or the second shaft 23 or the third shaft 25 of the gear set 20, as shown in FIG. Preferably, the oil supply port 50 is located on the third shaft 25; when the third shaft 25 rotates, the lubricating oil flowing out of the oil supply port 50 splashes and lubricates the gear set 20 by centrifugal force, or accumulates in the second storage The oil tank 40, the remaining lubricating oil is returned to the first oil storage tank 32; the oil supply port 50 can also be located at the first shaft 21 or the second shaft 23, and the same effect can be achieved. The position of the oil supply port 50 of the present invention. No specific restrictions are imposed.

As shown in FIG. 1 and FIG. 2 , the oil pump 60 includes a body and an oil passage connected to the body. The oil pump 60 communicates with the first oil storage tank 32 and the oil supply port 50 via the oil passage.

As shown in FIG. 2, FIG. 6, and FIG. 7, the first embodiment of the present invention, when used (the dotted arrow indicates the flow path of the oil), continuously supplies the lubricating oil from the oil supply port 50 to the gear set in a splash manner. 20, the gear set 20 can be continuously lubricated; and the excess lubricating oil is accumulated in the first oil storage tank 32 and the second oil storage tank 40, and a first oil is formed on the liquid surface of the lubricating oil of the first oil storage tank 32. The surface S1 forms a second oil level S2 on the liquid surface of the lubricating oil of the second oil storage tank 40. The height of the bottom surface of the inner wall of the second oil storage tank 40 is higher than the first oil level S1.

Since the lowermost tooth 2411 of the large gear portion 241 of the second gear 24 is lower than the flow end 42 of the second oil reservoir 40, and because the second oil level S2 of the second oil reservoir 40 is approximately the circulation end with the second oil reservoir 40 The 42 is located on the same plane. Therefore, the lowermost tooth 2411 of the second gear 24 is lower than the second oil level S2 and is infiltrated into the lubricating oil of the second oil reservoir 40. When the second gear 24 continues to rotate, the lubricating oil of the second oil storage tank 40 can be continuously brought on, and the lubricating oil is further uniformly splashed to the gear set 20; further preferably, as shown in FIG. The distance L between the tooth peak 24111 of the lowermost tooth 2411 of the gear 24 large toothed portion 241 and the second oil surface S2 is 0.5 to 2 times the tooth height H of the large gear portion 241 of the second gear 24 . Preferably, the distance L between the tooth peak 24111 and the second oil level S2 is 1 times the tooth height H. Since the lowermost tooth 2411 of the second gear 24 is wetted to the depth of the oil, the impedance of the second gear 24 is less affected by the oil resistance, the oil is not easily deteriorated, and the second gear 24 is rotated due to the shallow depth of the oil. It is easy to move the oil to splash the oil and achieve the double splash effect.

Next, when the oil of the second oil storage tank 40 is full, excess oil flows to the first oil storage tank 32 via the circulation end 42. The oil suction port 321 is located at the bottom of the first oil storage tank 32, and is pumped to the oil supply by the oil pump 60 through the oil passage formed inside the left casing 11, the oil passage formed inside the outer cover 13, and the third shaft 25. The port 50 can transport the oil after lubricating the gear set 20 to the first oil storage tank 32. The oil pump 60 is connected to the oil suction port 321 and the oil supply port 50. The oil pump 60 functions to transport the oil of the first oil storage tank 32 to the oil supply port 50, and once again splashes out from the oil supply port 50, thereby forming a cycle. .

In addition, the second oil storage tank 40 of the present invention may be directly protruded from the inner wall of one side of the casing 10 to the inner wall surface, for example, a lateral convex portion of the left casing 11 and abutting against the right casing. The oil storage rib of 12, or an oil storage rib which is laterally protruded from the right casing 12 and abuts against the left casing 11, does not specifically limit the form of the second oil reservoir 40.

As shown in FIGS. 9 to 11, the second embodiment of the present invention is substantially the same as the first embodiment, wherein the oil supply port 50A is located at the top of the casing 10 and above the gear set 20. The dotted arrow indicates the flow path of the oil, and is sent to the oil supply port 50A by the oil pump 60 by pumping through the oil path formed inside the left casing 11, and the lubricating oil flowing out from the oil supply port 50A gradually drops on the gear set 20 Thereby, the lubricating oil can be continuously supplied to the gear train 20 from the oil supply port 50A in a dripping manner.

As shown in FIGS. 12 to 13, the third embodiment of the present invention is substantially the same as the first embodiment, wherein the oil supply port 50B is located at the bottom of the second oil reservoir 40. The dotted arrow indicates the flow path of the oil, and is pumped to the oil supply port 50B by the oil pump 60 through the oil passage formed inside the left casing 11, whereby the lubricating oil can be directly output to the second through the oil supply port 50B. The gear set 20 is continuously lubricated in the sump 40 by means of the direct infiltration and plucking of the gear set 20.

However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the simple equivalent changes and modifications made by the scope of the present invention and the contents of the specification are all It should remain within the scope of the invention patent.

10. . . Box

11. . . Left housing

111. . . Oil hole

12. . . Right housing

13. . . s

20. . . Gear set

twenty one. . . First axis

twenty two. . . First gear

twenty three. . . Second axis

twenty four. . . Second gear

241. . . Large toothed disc

2411. . . tooth

24111. . . Tooth peak

242. . . Small toothed disc

25. . . Third axis

26. . . Third gear

31. . . Oil room

32. . . First oil storage tank

321. . . Suction port

40. . . Second oil storage tank

41. . . Oil storage rib

42. . . Circulation end

50. . . Fuel supply port

60. . . Oil pump

50A. . . Fuel supply port

50B. . . Fuel supply port

L. . . distance

H. . . Tooth height

S1. . . First oil surface

S2. . . Second oil surface

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a first preferred embodiment of the present invention.

Figure 2 is a perspective exploded view of the first preferred embodiment of the present invention and a flow path of the oil.

Figure 3 is an exploded perspective view of a perspective portion of another angle of the first preferred embodiment of the present invention.

Figure 4 is a side elevational view of the first embodiment of the present invention with the outer cover removed.

Figure 5 is a side elevational view of a fuel supply port in accordance with a first preferred embodiment of the present invention.

Figure 6 is a side elevational view of the first preferred embodiment of the present invention with the right housing removed.

Figure 7 is a schematic view showing the relative positions of the first oil surface and the second oil surface in the first preferred embodiment of the present invention.

Fig. 8 is an enlarged schematic view showing the teeth of the second gear of the first preferred embodiment of the present invention infiltrated with oil.

Figure 9 is a schematic view showing the flow path of the oil according to the second preferred embodiment of the present invention.

Figure 10 is a schematic view showing the flow path of the oil according to the second preferred embodiment of the present invention.

Figure 11 is a schematic view showing the position of the oil supply port according to the second preferred embodiment of the present invention.

Figure 12 is a schematic view showing the flow path of oil according to a third preferred embodiment of the present invention.

Figure 13 is a schematic view showing the position of the oil supply port in the third preferred embodiment of the present invention.

11. . . Left housing

111. . . Oil hole

20. . . Gear set

twenty one. . . First axis

twenty two. . . First gear

twenty three. . . Second axis

twenty four. . . Second gear

241. . . Large toothed disc

242. . . Small toothed disc

31. . . Oil room

40. . . Second oil storage tank

Claims (9)

An oily structure of an engine, comprising: a box body; a gear set disposed in the box body, defining at least one gear in the gear set as an immersion gear; a first oil sump disposed on the gear The bottom of the group is located at the bottom of the box, and is provided with an oil suction port formed in the first oil storage tank, and a first oil surface is formed on the liquid surface of the lubricating oil of the first oil storage tank; a second oil storage tank, The second oil storage tank is located above the first oil storage tank, and the second oil storage tank forms a circulation end at the edge of the groove, wherein the teeth of the lowermost tooth of the wetting gear The peak is lower than the circulation end of the second oil storage tank, and a second oil level is formed on the liquid surface of the lubricating oil of the second oil storage tank; an oil supply port capable of supplying lubricating oil to the gear set, wherein The second oil storage tank can accumulate the lubricating oil outputted through the oil supply port, and the tooth peak of the lowermost tooth of the wetting gear can be infiltrated into the lubricating oil of the second oil storage tank, and the lowest peak of the lowest gear of the wetting gear In the first oil level of the first oil storage tank and lower than the first The second oil sump; and an oil pump via an oil passage respectively communicating with the first oil groove and the oil supply port, so that the first oil sump can be conveyed to the fuel supply port. The engine oil-tight structure according to claim 1, wherein a tooth peak at a lowermost portion of the wetting gear is infiltrated in the second oil storage tank, and a distance between a tooth peak at a lowermost portion of the wetting gear and the second oil surface is The soaking gear has a tooth height of 0.5 to 2 times. The oil-lubricating structure of the engine of claim 2, wherein the infiltrating tooth The distance between the lowest peak of the wheel and the second oil level is one times the tooth height of the wetting gear. The oil-filling structure of the engine of claim 2, wherein the second oil reservoir comprises an oil storage rib connected to the inner wall surfaces of the two sides of the casing. The oil-tight construction of the engine of any one of claims 1 to 4, wherein the oil supply port is located in at least one gear shaft of the gear set or the second oil reservoir. The oil-tight construction of the engine of claim 1, wherein the oil supply port is located in at least one gear shaft of the gear set or the second oil storage tank. The oil-tight construction of the engine of any one of claims 1 to 4, wherein the oil supply port is located at the top of the tank and above the gear set. The oil-tight construction of the engine of claim 1, wherein the fuel supply port is located at the top of the tank and above the gear set. The oil-lubricating structure of the engine of claim 1, wherein the flow end of the second oil storage tank is not higher than the gear shaft of the wetting gear.