Engine

Abstract

The utility model provides an engine which comprises an engine body and a gearbox, the gearbox comprises a first shell, a second shell, a gear assembly and a lubricating oil channel, and the gear assembly comprises a crankshaft gear, a first idle gear, a second idle gear, a first output gear, a second output gear and a bearing component. The lubricating oil channel comprises an oil inlet hole, a first oil channel, a second oil channel, a first external oil channel, a third oil channel, a fourth oil channel, a second external oil channel and a third external oil channel. According to the engine, lubrication of gear boxes of multiple sets of hydraulic pumps is achieved, reliability of gears and bearings is improved, lubrication requirements of the gear boxes matched with the hydraulic pumps and the bearings of different specifications are met through forced oil injection lubrication of the oil pipes, reliability of a gear train is improved, and the service life of the gear train is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of power output, and in particular to an engine. Background Technology

[0002] With the development of vehicle technology, large agricultural machinery such as harvesters are gradually moving towards full hydraulic drive, using hydraulic drive as the primary power transmission method. This places higher demands on engine design. Due to the limited space in the vehicle and the diverse hydraulic requirements of different vehicles, designing multiple hydraulic output interfaces becomes crucial. Simultaneously, because the engine has many moving parts, and considering that multiple hydraulic output interfaces also necessitate the installation of multiple sets of gears, bearings, and other components, lubrication with engine oil is required to ensure the reliable operation of these bearings and gears. Therefore, how to better achieve gearbox lubrication for multiple hydraulic pumps, achieving simple and smooth lubrication to meet the engine's operating requirements, is also a key design consideration.

[0003] Therefore, it is necessary to provide an engine that overcomes the defects mentioned above. Utility Model Content

[0004] The purpose of this utility model is to provide an engine that, through a reasonable design of the lubrication oil passage, lubricates the idler gear, output gear, bearings, and other components in the gearbox of multiple hydraulic pumps. This makes the lubrication oil circuit simple and convenient, and improves the reliability of gears and bearings through spray lubrication, thus meeting the usage requirements of the gearbox and the engine.

[0005] According to one aspect of the present invention, an engine is provided, with the side where the flywheel is located as the rear, including a body and a gearbox, the gearbox being located at the rear end of the body; the gearbox includes a first housing, a second housing, a gear assembly, and a lubrication oil passage, the first housing being used to accommodate the flywheel, the second housing being located between the first housing and the body, and a receiving space being formed between the second housing and the first housing, the gear assembly being located in the receiving space;

[0006] The gear assembly is placed in the receiving space. The gear assembly includes a crankshaft gear and a first idler gear and a second idler gear that mesh with the crankshaft gear and are located on both sides above the crankshaft gear. The gear assembly also includes a first output gear that is located obliquely above the first idler gear and meshes with the first idler gear, and a second output gear that is located obliquely above the second idler gear and meshes with the second idler gear. The gear assembly also includes a bearing component to realize the rotation requirement of the gear.

[0007] The lubrication passage is used to lubricate the gear assembly. The lubrication passage includes an oil inlet, a first oil passage, a second oil passage, a first external oil passage, a third oil passage, a fourth oil passage, a second external oil passage, and a third external oil passage. The oil inlet is located in the second housing near the second idler gear. The oil inlet is connected to the main lubrication oil passage of the machine body to deliver oil to the gearbox to lubricate the gear assembly.

[0008] The first oil passage is located in the second housing and communicates with the oil inlet. The first oil passage extends from bottom to top near the first idler gear. The second oil passage is located in the second housing and communicates with the first oil passage. The second oil passage extends from bottom to top near the second idler gear. The first external oil passage is located above the second housing and communicates with the first and second oil passages. The third oil passage is located in the second housing and above the first output gear. The third oil passage extends vertically and communicates with the first external oil passage. The second external oil passage communicates with the first external oil passage and the third oil passage. The fourth oil passage is located in the first housing and above the first output gear. The fourth oil passage extends vertically. The third external oil passage is located above the gearbox and extends from the second housing towards the first housing. The third external oil passage communicates with the second external oil passage and the fourth oil passage.

[0009] The above method draws oil from the main oil passage of the machine body and delivers it to the lubrication position through the oil inlet hole, thereby achieving lubrication of idler gears, output gears and bearings in the gearbox. The lubrication circuit is simple and convenient. By spraying lubricating oil, the reliability of gears and bearings is improved, and the gearbox can better match the lubrication requirements of hydraulic pumps and bearings of different specifications, thereby improving the reliability and life of the gear train.

[0010] Preferably, the lubricating oil passage further includes a fifth oil passage located inside the first housing and communicating with the first oil passage, the fifth oil passage being horizontally arranged.

[0011] Preferably, the gear assembly is arranged symmetrically from left to right. In the gear assembly, the second idler gear and the second output gear are arranged symmetrically with respect to the center line of the crankshaft gear shaft, respectively, with respect to the first idler gear and the first output gear. The rear ends of the first output gear and the second output gear are used to connect to a hydraulic pump. The first housing has a hydraulic pump mounting interface facing rearward and corresponding to the first output gear and the second output gear, respectively, for connecting to a hydraulic pump. The front ends of the first output gear and the second output gear are used to connect to a gear pump. The second housing has a gear pump mounting interface facing forward and corresponding to the first output gear and the second output gear, respectively, for connecting to a gear pump.

[0012] Preferably, the bearing component includes a first bearing coaxially arranged with the first idler gear and a second bearing coaxially arranged with the second idler gear, a first oil passage for lubricating the first bearing and a second oil passage for lubricating the second bearing.

[0013] Preferably, the bearing assembly further includes a third bearing coaxially arranged with the first output gear and located on one side of the second housing, and a fourth bearing coaxially arranged with the first output gear and located on one side of the first housing, wherein the third oil passage is used to lubricate the third bearing and the fourth oil passage is used to lubricate the fourth bearing.

[0014] Preferably, the bearing assembly further includes a fifth bearing and a sixth bearing coaxially disposed with the second output gear.

[0015] Preferably, both the first housing and the second housing are provided with oil passage reserved positions for lubrication oil passages, and the lubrication oil passages are connected to the interior of the rear gearbox through the oil passage reserved positions.

[0016] Preferably, the lubrication passage further includes a sixth oil passage located in the second housing and above the second output gear, the sixth oil passage extending in a vertical direction; the lubrication passage further includes a seventh oil passage located in the first housing and above the second output gear, the seventh oil passage extending in a vertical direction.

[0017] Preferably, the lubrication passage further includes a fourth external oil passage located above the second housing and communicating between the sixth oil passage and the first external oil passage.

[0018] Preferably, the lubrication passage further includes a fifth external oil passage located above the gearbox and extending along the second housing toward the first housing, the fifth external oil passage being connected between the fourth external oil passage and the seventh oil passage.

[0019] Preferably, the bearing assembly further includes a fifth bearing coaxially arranged with the second output gear and located on one side of the second housing, and a sixth bearing coaxially arranged with the second output gear and located on one side of the first housing; the sixth oil passage is used to lubricate the fifth bearing, and the seventh oil passage is used to lubricate the sixth bearing.

[0020] This utility model provides an engine including a body and a gearbox. The gearbox includes a first housing, a second housing, a gear assembly, and a lubrication oil passage. Through the overall lubrication oil passage design, the gearbox with multiple hydraulic pumps can be lubricated, improving the reliability of gears and bearings. Forced oil injection lubrication through oil pipes can meet the lubrication requirements of the gearbox matching different specifications of hydraulic pumps and bearings, thereby improving the reliability and life of the gear train. Attached Figure Description

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] Figure 1 A three-dimensional schematic diagram of the engine;

[0023] Figure 2 This is a schematic diagram of the gearbox as a whole;

[0024] Figure 3 This is a schematic diagram of a gear assembly;

[0025] Figure 4 This is a schematic diagram of the front of the gearbox;

[0026] Figure 5 This is a side view of the gearbox;

[0027] Figure 6 for Figure 5 Sectional view along the AA direction;

[0028] Figure 7 This is a front view of the flywheel side at the rear of the gearbox;

[0029] Figure 8 for Figure 7 Sectional view along the BB direction;

[0030] Figure 9 for Figure 7 Sectional view along the CC direction.

[0031] Explanation of icon numbers:

[0032] 10. Engine body; 20. Gearbox; 21. First housing; 22. Second housing; 23. Lubricating oil passage; 24. Gear assembly; 241. Second output gear; 242. Second idler gear; 243. Crankshaft gear; 244. First idler gear; 245. First output gear; 246. Bearing assembly; 2301. Fifth external oil passage; 2302. Fourth external oil passage; 2303. First external oil passage; 2304. Second external oil passage; 2305. Third... External oil passage; 2306, Second oil passage; 2307, First oil passage; 2308, Oil inlet; 2309, Fifth oil passage; 2310, Fourth oil passage; 2311, Third oil passage; 2312, Sixth oil passage; 2313, Seventh oil passage; 2461, Sixth bearing; 2462, Second bearing; 2463, First bearing; 2464, Fourth bearing; 2465, Third bearing; 2466, Fifth bearing; 100, Engine; A, Oil passage reserved position. Detailed Implementation

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0035] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0036] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0039] The embodiments for carrying out this application will be described based on the accompanying drawings. It should be noted that, in the following description, the direction of F is set to "forward" (refer to...). Figure 1 Set the direction of B to "back" (refer to...). Figure 1 Set the direction of L to "left" (refer to...). Figure 1 Set the direction of R to "right" (see 1).

[0040] See Figures 1 to 9As shown, this embodiment provides an engine 100, with the side where the flywheel is located as the rear, including a body 10 and a gearbox 20, with the gearbox 20 located at the rear end of the body 10; the gearbox 20 includes a first housing 21, a second housing 22, a gear assembly 24, and a lubrication oil passage 23. The first housing 21 is used to accommodate the flywheel. Further, the first housing 21 includes a cavity facing the rear end for accommodating the flywheel and a cavity facing the front end for accommodating part of the gear assembly 24. The first housing 21 has a hydraulic pump mounting interface (not labeled) facing the rear for installing hydraulic pumps. A pressure pump (not shown) is provided. The second housing 22 is placed between the first housing 21 and the body 10, and a receiving space is formed between the second housing 22 and the first housing 21. The gear assembly 24 is placed in the receiving space. The second housing 22 has a gear pump mounting interface (not labeled) facing forward for mounting the gear pump (not shown). Both the first housing 21 and the second housing 22 are provided with oil passage reserved positions A for lubricating oil passages 23. The lubricating oil passages 23 are connected to the interior of the rear gearbox 20 through the oil passage reserved positions A. The lubricating oil passages 23 are used to lubricate the gear assembly 24.

[0041] See Figure 2 and Figure 3 As shown, the gear assembly 24 is placed in the receiving space. The gear assembly 24 includes a crankshaft gear 243 and a first idler gear 244 and a second idler gear 242 that mesh with the crankshaft gear 243 and are located on both sides above the crankshaft gear 243. The gear assembly 24 also includes a first output gear 245 that is located obliquely above the first idler gear 244 and meshes with the first idler gear 244, and a second output gear 241 that is located obliquely above the second idler gear 242 and meshes with the second idler gear 242.

[0042] The gear assembly 24 is arranged symmetrically from left to right. In the gear assembly 24, the second idler gear 242 and the second output gear 241 are arranged symmetrically with the center line of the crankshaft gear 243 shaft to the first idler gear 244 and the first output gear 245, respectively. The rear ends of the first output gear 245 and the second output gear 241 are used to connect to the hydraulic pump, and the front ends of the first output gear 245 and the second output gear 241 are used to connect to the gear pump.

[0043] See Figure 3 , Figure 8 and Figure 9As shown, the gear assembly 24 also includes a bearing component 246 to realize the rotation requirements of the gear. The bearing component 246 includes a first bearing 2463 coaxially arranged with the first idler gear 244, a second bearing 2462 coaxially arranged with the second idler gear 242, a third bearing 2465 coaxially arranged with the first output gear 245 and located on one side of the second housing 22, a fourth bearing 2464 coaxially arranged with the first output gear 245 and located on one side of the first housing 21, a fifth bearing 2466 coaxially arranged with the second output gear 241 and located on one side of the second housing 22, and a sixth bearing 2461 coaxially arranged with the second output gear 241 and located on one side of the first housing 21.

[0044] See Figures 2 to 9 As shown, the lubrication passage 23 is used to lubricate the gear assembly 24. The lubrication passage 23 includes an oil inlet 2308, a first oil passage 2307, a second oil passage 2306, a third oil passage 2311, a fourth oil passage 2310, a fifth oil passage 2309, a sixth oil passage 2312, a seventh oil passage 2313, a first external oil passage 2303, a second external oil passage 2304, a third external oil passage 2305, a fourth external oil passage 2302, and a fifth external oil passage 2301.

[0045] See Figure 2 As shown, the first external oil passage 2303 is located above the second housing 22; the second external oil passage 2304 is located above the second housing 22 and extends from the first idler gear 244 toward the first output gear 245, with one end of the second external oil passage 2304 connected to one end of the first external oil passage 2303; the third external oil passage 2305 is located above the gearbox 20 and extends along the second housing 22 toward the first housing 21, with one end of the third external oil passage 2305 connected to the other end of the second external oil passage 2304; the fourth external oil passage 2302 is located above the second housing 22 and extends from the second idler gear 242 toward the second output gear 241, with one end of the fourth external oil passage 2302 connected to the other end of the first external oil passage 2303; and the fifth external oil passage 2301 is located above the gearbox 20 and extends along the second housing 22 toward the first housing 21, with one end of the fifth external oil passage 2301 connected to the other end of the fourth external oil passage 2302.

[0046] See Figure 4 and Figure 6 As shown, the oil inlet 2308 is located in the second housing 22 near the second idler gear 242. The oil inlet 2308 is connected to the main lubricating oil passage of the machine body 10 to deliver oil to the gearbox 20 to lubricate the gear assembly 24.

[0047] See Figure 5 and Figure 6As shown, the first oil passage 2307 is located in the second housing 22 and communicates with the oil inlet 2308. The first oil passage 2307 extends from bottom to top near the first idler gear 244 to lubricate the first bearing 2463. The second oil passage 2306 is located in the second housing 22 and communicates with the first oil passage 2307 to lubricate the second bearing 2462. The second oil passage 2306 extends from bottom to top near the second idler gear 242. The first external oil passage 2303 is located above the second housing 22 and communicates with the first oil passage 2307 and the second oil passage 2306 to deliver engine oil through the first oil passage 2307 to the second oil passage 2306. The fifth oil passage 2309 is horizontally arranged to lubricate the first idler gear 244 and the first bearing 2463.

[0048] See Figure 7 and Figure 8 As shown, the third oil passage 2311 is located in the second housing 22 and above the first output gear 245 to lubricate the third bearing 2465. The third oil passage 2311 extends vertically and communicates with the first external oil passage 2303. The second external oil passage 2304 communicates with the first external oil passage 2303 and the third oil passage 2311. The fourth oil passage 2310 is located in the first housing 21 and above the first output gear 245. The fourth oil passage 2310 is used to lubricate the fourth bearing 2464 and extends vertically. The third external oil passage 2305 communicates with the second external oil passage 2304 and the fourth oil passage 2310 to deliver oil to the fourth bearing 2464.

[0049] See Figure 7 and Figure 9 As shown, the sixth oil passage 2312 is located in the second housing 22 and extends vertically above the second output gear 241 to lubricate the fifth bearing 2466. The fourth external oil passage 2302 is connected between the sixth oil passage 2312 and the first external oil passage 2303 to deliver oil to the fifth bearing 2466. The seventh oil passage 2313 is located in the first housing 21 and extends vertically above the second output gear 241 to lubricate the sixth bearing 2461. The fifth external oil passage 2301 is connected between the fourth external oil passage 2302 and the seventh oil passage 2313 to deliver oil to the sixth bearing 2461, thereby achieving lubrication of the bearing.

[0050] The present invention provides an engine 100 including a body 10 and a gearbox 20. The gearbox 20 includes a first housing 21, a second housing 22, a gear assembly 24, and a lubrication oil passage 23. By designing the overall lubrication oil passage 23, the gearbox 20 with multiple hydraulic pumps can be lubricated, thereby improving the reliability of gears and bearings. By using oil pipes for forced oil injection lubrication, the lubrication requirements of the gearbox 20 for matching hydraulic pumps and bearings of different specifications can be met, thereby improving the reliability and lifespan of the gear train.

[0051] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. An engine, with the side where the flywheel is located being the rear, characterized in that, include: Organism; A gearbox, which is located at the rear end of the machine body; The gearbox includes: A first housing for accommodating the flywheel; A second housing is disposed between the first housing and the body, and a receiving space is formed between the second housing and the first housing; A gear assembly is disposed in the receiving space. The gear assembly includes a crankshaft gear and a first idler gear and a second idler gear that mesh with the crankshaft gear and are disposed on both sides above the crankshaft gear. The gear assembly also includes a first output gear that meshes with the first idler gear and is disposed obliquely above the first idler gear, and a second output gear that meshes with the second idler gear and is disposed obliquely above the second idler gear. The gear assembly also includes a bearing component. A lubrication passage for lubricating the gear assembly, the lubrication passage comprising: An oil inlet is located in the second housing near the first idler gear. The first oil passage is located in the second housing and communicates with the oil inlet hole, and the first oil passage extends from bottom to top on the side near the first idler gear. The second oil passage is located in the second housing and communicates with the first oil passage, and the second oil passage extends from bottom to top on the side near the second idler gear. The first external oil passage is located above the second housing and communicates with the first oil passage and the second oil passage; The third oil passage is located in the second housing and above the first output gear, and extends vertically to communicate with the first external oil passage. The second external oil passage is located above the second housing and is connected to the first external oil passage and the third oil passage. The fourth oil passage is located in the first housing and above the first output gear, and extends in a vertical direction. The third external oil passage is located above the gearbox and extends along the second housing toward the first housing. The third external oil passage connects the second external oil passage and the fourth oil passage.

2. An engine as claimed in claim 1 wherein, The lubricating oil passage also includes a fifth oil passage located inside the first housing and communicating with the first oil passage, the fifth oil passage being horizontally arranged.

3. An engine as claimed in claim 2, wherein The bearing component includes a first bearing coaxially arranged with the first idler gear and a second bearing coaxially arranged with the second idler gear. The first oil passage is used to lubricate the first bearing, and the second oil passage is used to lubricate the second bearing.

4. An engine as claimed in claim 3, wherein The bearing component further includes a third bearing coaxially arranged with the first output gear and located on one side of the second housing, and a fourth bearing coaxially arranged with the first output gear and located on one side of the first housing. The third oil passage is used to lubricate the third bearing, and the fourth oil passage is used to lubricate the fourth bearing.

5. An engine as claimed in claim 4, wherein Both the first housing and the second housing are provided with oil passage reserved positions for the lubricating oil passage, and the lubricating oil passage is connected to the interior of the rear gearbox through the oil passage reserved positions.

6. An engine as claimed in claim 5 wherein, The lubrication passage further includes a sixth oil passage located in the second housing and above the second output gear, the sixth oil passage extending in a vertical direction; the lubrication passage further includes a seventh oil passage located in the first housing and above the second output gear, the seventh oil passage extending in a vertical direction.

7. An engine as claimed in claim 6 wherein, The lubrication passage also includes a fourth external oil passage located above the second housing and communicating between the sixth oil passage and the first external oil passage.

8. An engine as claimed in claim 7, wherein, The lubrication passage also includes a fifth external oil passage located above the gearbox and extending along the second housing toward the first housing, the fifth external oil passage being connected between the fourth external oil passage and the seventh oil passage.

9. An engine as claimed in claim 8, wherein, The bearing assembly further includes a fifth bearing coaxially arranged with the second output gear and located on one side of the second housing, and a sixth bearing coaxially arranged with the second output gear and located on one side of the first housing; the sixth oil passage is used to lubricate the fifth bearing, and the seventh oil passage is used to lubricate the sixth bearing.

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