Multi-output engine and agricultural machine

Abstract

The multi-output engine comprises a crank case and a crankshaft rotatably arranged in the crank case, and is characterized in that the crank case comprises a main case body, one side of the main case body is open and is connected with an auxiliary case body in a sealed mode, and the auxiliary case body is connected with the crank case in a sealed mode. A box cover is arranged on the other side of the auxiliary box body in a closed mode. A speed reduction shaft and a speed change shaft which are parallel to the crankshaft are arranged in the auxiliary box body, a speed change gear set is arranged between the speed reduction shaft and the speed change shaft in a transmission mode, and the box cover is provided with a connecting hole which is correspondingly coaxial with the speed reduction shaft and / or the speed change shaft. The end, facing the corresponding connecting hole, of the speed reduction shaft and / or the speed change shaft forms an output end. And the speed reduction shaft is in transmission connection with the crankshaft. The utility model has the advantages of reasonable structural design, multiple power output ends, compact structure and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a multi-output engine and an agricultural machine. Background Art

[0002] The engine converts gasoline, diesel and other energies into kinetic energy to drive the machine. It is usually composed of a crank-connecting rod mechanism, a valve mechanism, a fuel supply system, etc. Among them, the crank-connecting rod mechanism is the main moving part of the engine to realize the working cycle and complete the energy conversion. It consists of a cylinder head, a housing, a piston-connecting rod combination, a crankshaft and a flywheel assembly, etc. During the power stroke, the piston bears the gas pressure and moves linearly in the cylinder, which is converted into the rotational motion of the crankshaft through the connecting rod, and the power is output from the crankshaft to the outside.

[0003] Usually, the power of the engine is output by the crankshaft, and then connected to the speed change mechanism to reduce the speed before being transmitted to the driven parts. For equipment with multiple driven parts or expandable driven parts, in order to meet the power requirements of multiple driven parts, multiple output shafts need to be set on the speed change mechanism, which will increase the size of the speed change mechanism. At the same time, since the engine and the speed change mechanism are set independently, the layout space of the two will also increase. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a multi-output engine with reasonable structural design, multiple power output ends and compact structure.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A multi-output engine comprises a crankcase and a crankshaft rotatably arranged in the crankcase, characterized in that the crankcase comprises a main case body, one side of the main case body is open and is sealedly connected to a sub-case body, and the other side of the sub-case body is closed and provided with a case cover; a reduction shaft and a speed change shaft arranged parallel to the crankshaft are provided in the sub-case body, a speed change gear set is transmission-arranged between the reduction shaft and the speed change shaft, the case cover has a connecting hole coaxial with the reduction shaft and / or the speed change shaft, and the reduction shaft and / or the speed change shaft form an output end facing one end corresponding to the connecting hole; the reduction shaft is transmission-connected to the crankshaft.

[0007] In the above structure, since the reduction shaft and the speed change shaft both pass through the case cover to form an output end, the power of the engine is transmitted to the reduction shaft through the crankshaft, and a speed change gear set is arranged between the reduction shaft and the speed change shaft, so that the output ends of the reduction shaft and the speed change shaft can output different speeds and torques to meet the working requirements of different working conditions.

[0008] Furthermore, the speed change gear set includes a double gear slidably arranged on the reduction shaft, and a high-speed driven gear and a low-speed driven gear arranged on the speed change shaft, and the double gear includes a high-speed driving gear and a low-speed driving gear that can switchably mesh with the high-speed driven gear and the low-speed driven gear respectively.

[0009] Furthermore, the auxiliary box body also has a fork shaft arranged parallel to the reduction shaft, and the fork shaft has a fork for moving the double gears so that the high-speed driving gear or the low-speed driving gear is meshed with the corresponding high-speed driven gear or the low-speed driven gear.

[0010] Furthermore, the auxiliary case body also has at least one secondary shaft arranged parallel to the reduction shaft, and the secondary shaft is transmission-connected to the reduction shaft, the speed change shaft or the adjacent secondary shaft through a reduction gear set, and one end of the secondary shaft passes through the case cover or the auxiliary case body to form an output end.

[0011] Furthermore, a clutch is provided between the reduction shaft and the crankshaft.

[0012] Furthermore, one end of the clutch is connected to the crankshaft transmission, and the other end has an output shaft, and the output shaft is connected to the reduction shaft through mutually meshing gears.

[0013] Furthermore, a rotatable camshaft is also provided in the crankcase, and the crankshaft and the camshaft are connected to each other through a reduction mechanism; the camshaft is coaxially connected to the clutch.

[0014] Furthermore, the speed reduction mechanism includes a high-speed gear coaxially arranged on the crankshaft and a low-speed gear coaxially arranged on the camshaft, and the high-speed gear and the low-speed gear are meshed with each other.

[0015] Furthermore, a communicating hollow hole is provided between the main housing and the auxiliary housing, and the lowest point of the hollow hole is not lower than the bottom surface of the main housing, so that the lubricating oil in the main housing and the auxiliary housing can flow.

[0016] An agricultural machine, characterized by comprising the multi-output engine as described above.

[0017] In summary, the utility model has the advantages of reasonable structural design, multiple power output ends, compact structure, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of this embodiment.

[0019] Figure 2 It is a schematic diagram of the side structure of this embodiment.

[0020] Figure 3 For Figure 2 the sectional view structure diagram of A-A

[0021] Figure 4 and Figure 5 is the exploded view structure diagram of this embodiment

[0022] Figure 6 and Figure 7 is the structure diagram of the internal gear transmission of the auxiliary box

[0023] Figure 8 is the structure diagram of the auxiliary box Specific embodiments

[0024] The present utility model will be further described in detail below in conjunction with the embodiments

[0025] During specific implementation: As Figures 1 to 8 shown, a multi-output engine includes a crankcase 1 and a crankshaft 2 rotatably disposed in the crankcase 1. The crankcase 1 includes a main box 11, one side of the main box 1 is open, and an auxiliary box 12 is hermetically connected thereto. The other side of the auxiliary box 12 is closed with a box cover 13. An idler shaft 15 and a transmission shaft 16 parallel to the crankshaft 2 are disposed in the auxiliary box 12. A transmission gear set is disposed between the idler shaft 15 and the transmission shaft 16. The box cover 13 has connection holes corresponding to and coaxial with the idler shaft 15 and the transmission shaft 16. One ends of the idler shaft 15 and the transmission shaft 16 facing the corresponding connection holes form output ends. The idler shaft 15 is drivingly connected to the crankshaft 2

[0026] In this embodiment, a rotatable camshaft 3 is further disposed in the crankcase 1. The crankshaft 2 is drivingly connected to the camshaft 3 through a reduction mechanism 6. One end of the camshaft 3 is coaxially connected with a clutch 4. The clutch 4 is disposed on the crankcase 1, and the other end has an output shaft 41. The output shaft 41 is drivingly connected to the idler shaft 15 through meshing gears. Wherein, the reduction mechanism 6 includes a high-speed gear 61 coaxially disposed on the crankshaft 2 and a low-speed gear 62 coaxially disposed on the camshaft 3. The high-speed gear 61 meshes with the low-speed gear 62

[0027] The speed change gear set includes a double gear slidably arranged on the reduction shaft 15, and a high-speed driven gear 161 and a low-speed driven gear 162 arranged on the speed change shaft 16, and the double gear includes a high-speed driving gear 151 and a low-speed driving gear 152 that can be switchably engaged with the high-speed driven gear 161 and the low-speed driven gear 162, respectively. Specifically, the auxiliary case 12 also has a fork shaft 17 arranged parallel to the reduction shaft 15, and the fork shaft 17 has a fork for moving the double gear, so that the high-speed driving gear 151 or the low-speed driving gear 152 is engaged with the corresponding high-speed driven gear 161 or the low-speed driven gear 162.

[0028] In order to provide power output at different speeds, the auxiliary housing 12 also has a secondary shaft 18 arranged in parallel with the reduction shaft 15, and the secondary shaft 18 is connected to the speed change shaft 16 through a reduction gear set. Figures 6 to 7 As shown, in this embodiment, one end of the secondary shaft 18 passes through the box cover 13 to form an output end, and the box cover 13 has a connecting hole corresponding to the reduction shaft 15, the speed change shaft 16 and the secondary shaft 18, and the reduction shaft 15, the speed change shaft 16 and the secondary shaft 18 have internal splines at one end facing the corresponding connecting hole. In specific implementation, the number of connecting holes can be set as needed, and at the same time, the secondary shaft 18 can also be set as needed. The secondary shaft 18 is connected to the reduction shaft 15, the speed change shaft 16 or the adjacent secondary shaft 18 through a reduction gear set. In this embodiment, the clutch 4 is coaxially connected to the camshaft 3, and the engine power is transmitted from the crankshaft to the camshaft, and then transmitted to the clutch by the camshaft. In specific implementation, the clutch 4 can also be coaxially connected to the crankshaft 2, and the power is directly transmitted from the crankshaft to the clutch.

[0029] The multi-output engine of this embodiment has an output end that can pass through the case cover, because the reduction shaft, the speed change shaft and the countershaft all have output ends that can pass through the case cover. The power of the engine is transmitted to the reduction shaft through the crankshaft, and a speed change gear set is provided between the reduction shaft and the speed change shaft, so that the output ends of the reduction shaft and the speed change shaft can output different speeds and torques to meet the working requirements of different working conditions.

[0030] In this embodiment, a first bearing seat 121 and a second bearing seat 122 are provided on the side of the auxiliary box body 12 facing the main box body 1. Both ends of the crankshaft 2 are rotatably mounted on the main box body 11 and the first bearing seat 121 through bearings respectively. One end where the camshaft 3 and the clutch 4 are coaxially connected is rotatably supported on the second bearing seat 122 through a bearing, and the opposite ends are respectively mounted on the main box body 11 and the box cover 13 through bearings. Among them, the clutch 4 is a normally open clutch. The clutch 4 includes a clutch fork 42 and a clutch arm shaft 43. The clutch arm shaft 43 rotatably penetrates through the box cover 13, and the clutch fork 42 is connected to the clutch arm shaft 43.

[0031] There is a communicating hollow hole 14 between the main box body 11 and the auxiliary box body 12. The lowest point of the hollow hole 14 is not lower than the bottom surface of the main box body 11, so that the lubricating oil in the main box body 11 and the auxiliary box body 12 can flow. In this way, the main box body and the auxiliary box body can be connected as a whole, and the clutch is located in the crankcase. Since the clutch is added in the crankcase, the volume of the inner cavity of the crankcase increases, and the amount of lubricating oil in the crankcase increases, so that the lubricating oil can better dissipate heat for the crankcase. In addition, the surface area of the crankcase will also increase correspondingly, increasing the heat dissipation area. In this embodiment, both the first bearing seat 121 and the second bearing seat 122 are annular, and are integrally formed on the auxiliary box body 12 through a plurality of connecting ribs extending radially; the hollow hole 14 is formed between the connecting ribs.

[0032] As Figure 3 shown, both sides of the second bearing seat 122 are provided with a first bearing hole and a second bearing hole arranged coaxially. The camshaft 3 is rotatably mounted in the first bearing hole through a bearing, and the clutch 4 is rotatably mounted in the second bearing hole through a bearing. Among them, the clutch 4 is provided with a spline hole arranged coaxially, and the camshaft 3 is provided with a spline shaft matching with the spline hole.

[0033] The above are only the preferred embodiments of the present invention, and the present invention is not limited thereto. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-output engine, comprising a crankcase (1) and a crankshaft (2) rotatably disposed within the crankcase (1), characterized in that, The crankcase (1) includes a main housing (11). One side of the main housing (11) is open and is sealingly connected to a sub-housing (12). The other side of the sub-housing (12) is closed with a housing cover (13) provided thereon; inside the sub-housing (12), there is a reduction shaft (15) and a transmission shaft (16) arranged parallel to the crankshaft (2). A transmission gear set is arranged in a driving manner between the reduction shaft (15) and the transmission shaft (16). The housing cover (13) has connection holes corresponding to and coaxial with the reduction shaft (15) and / or the transmission shaft (16). One end of the reduction shaft (15) and / or the transmission shaft (16) facing the corresponding connection hole forms an output end; the reduction shaft (15) is in driving connection with the crankshaft (2).

2. The multi-output engine according to claim 1, characterized in that, The transmission gear set includes a double gear slidably arranged on the reduction shaft (15), and a high-speed driven gear (161) and a low-speed driven gear (162) arranged on the transmission shaft (16). The double gear includes a high-speed driving gear (151) and a low-speed driving gear (152) that can be switched to respectively mesh with the high-speed driven gear (161) and the low-speed driven gear (162).

3. The multi-output engine according to claim 2, wherein, The sub-housing (12) also has a fork shaft (17) arranged parallel to the reduction shaft (15). The fork shaft (17) has a fork for moving the double gear, so that the high-speed driving gear (151) or the low-speed driving gear (152) meshes with the corresponding high-speed driven gear (161) or low-speed driven gear (162).

4. The multi-output engine according to any one of claims 1 to 3, characterized in that, The sub-housing (12) also has at least one sub-shaft (18) arranged parallel to the reduction shaft (15). The sub-shaft (18) is in driving connection with the reduction shaft (15), the transmission shaft (16) or an adjacent sub-shaft (18) through a reduction gear set. One end of the sub-shaft (18) passes through the housing cover (13) or the sub-housing (12) to form an output end.

5. The multi-output engine according to any one of claims 1 to 3, characterized in that, A clutch (4) is arranged between the reduction shaft (15) and the crankshaft (2).

6. The multi-output engine according to claim 5, wherein One end of the clutch (4) is in driving connection with the crankshaft (2), and the other end has an output shaft (41). The output shaft (41) is in gear driving connection with the reduction shaft (15).

7. The multi-output engine according to claim 5, wherein A rotatable camshaft (3) is also arranged inside the crankcase (1). The crankshaft (2) is in driving connection with the camshaft (3) through a reduction mechanism (6); the camshaft (3) is coaxially connected to the clutch (4).

8. The multi-output engine according to claim 7, wherein The reduction mechanism (6) includes a high-speed gear (61) coaxially arranged on the crankshaft (2) and a low-speed gear (62) coaxially arranged on the camshaft (3). The high-speed gear (61) meshes with the low-speed gear (62).

9. The multi-output engine according to any one of claims 1 to 3, characterized in that There is a communicating hollow hole (14) between the main housing (11) and the sub-housing (12). The lowest point of the hollow hole (14) is not lower than the bottom surface of the main housing (11), so that the lubricating oil in the main housing (11) and the sub-housing (12) can flow.

10. An agricultural machine, characterized in that, An agricultural machine as claimed in any one of claims 1 to 9 is included.

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