CN118653927A - Multi-output engine and agricultural machine - Google Patents

Abstract

The invention discloses a multi-output engine and an agricultural machine, wherein the multi-output engine comprises a crankcase and a crankshaft rotatably arranged in the crankcase, and is characterized by comprising a main box body, wherein one side of the main box body is open and is hermetically connected with an auxiliary box body, and the other side of the auxiliary box body is provided with a box cover in a closed manner; the auxiliary box body is internally provided with a speed reducing shaft and a speed changing shaft which are arranged in parallel with the crankshaft, a speed changing gear set is arranged between the speed reducing shaft and the speed changing shaft in a transmission manner, the box cover is provided with a connecting hole which is coaxial with the speed reducing shaft and/or the speed changing shaft correspondingly, and the speed reducing shaft and/or the speed changing shaft form an output end towards one end corresponding to the connecting hole; the speed reducing shaft is in transmission connection with the crankshaft. The invention has the advantages of reasonable structural design, multiple power output ends, compact structure and the like.

Description

Multi-output engine and agricultural machine

Technical Field

The present invention relates to the technical field of engines, and in particular to a multi-output engine and an agricultural machine.

Background Art

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.

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.

Summary of the invention

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.

In order to solve the above technical problems, the present invention adopts the following technical solutions:

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, a connecting hole coaxial with the reduction shaft and/or the speed change shaft is provided on the case cover, 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.

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.

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.

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.

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.

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

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.

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.

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.

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.

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

In summary, the present invention has the advantages of reasonable structural design, multiple power output ends, compact structure, etc.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of this embodiment.

FIG. 2 is a schematic side view of the structure of this embodiment.

Fig. 3 is a schematic cross-sectional view of the structure along line A-A of Fig. 2 .

4 and 5 are schematic diagrams of the exploded structure of this embodiment.

6 and 7 are schematic diagrams of the structure of the gear transmission inside the auxiliary box.

FIG8 is a schematic structural diagram of the auxiliary box.

DETAILED DESCRIPTION

The present invention is further described in detail below in conjunction with embodiments.

During specific implementation: as shown in Figures 1 to 8, a multi-output engine includes a crankcase 1 and a crankshaft 2 rotatably arranged in the crankcase 1, the crankcase 1 includes a main case body 11, one side of the main case body 1 is open and sealedly connected to a sub-case body 12, and the other side of the sub-case body 12 is closed and provided with a case cover 13; the sub-case body 12 has a reduction shaft 15 and a speed change shaft 16 arranged parallel to the crankshaft 2, a speed change gear set is transmission-arranged between the reduction shaft 15 and the speed change shaft 16, the case cover 13 has a connecting hole coaxial with the reduction shaft 15 and the speed change shaft 16, the reduction shaft 15 and the speed change shaft 16 form an output end toward one end corresponding to the connecting hole; the reduction shaft 15 is transmission-connected to the crankshaft 2.

In this embodiment, a rotatable camshaft 3 is also arranged in the crankcase 1, and the crankshaft 2 is connected to the camshaft 3 through a reduction mechanism 6; one end of the camshaft 3 is coaxially connected to a clutch 4, and the clutch 4 is arranged on the crankcase 1, and the other end has an output shaft 41; the output shaft 41 is connected to the reduction shaft 15 through mutually meshing gears. 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, and the high-speed gear 61 and the low-speed gear 62 are meshed with each other.

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.

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 shaft 16 through a reduction gear set, as shown in Figures 6 and 7. 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 shaft 16 and the secondary shaft 18, and the reduction shaft 15, the speed 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 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 from the camshaft to the clutch. 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.

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.

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

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

As shown in Fig. 3, the second bearing seat 122 has a first bearing hole and a second bearing hole coaxially arranged on both sides, 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. The clutch 4 has a coaxially arranged spline hole, and the camshaft 3 has a spline shaft matched with the spline hole.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The multi-output engine comprises a crankcase (1) and a crankshaft (2) rotatably arranged in the crankcase (1), and is characterized by comprising a main box body (11) and a secondary box body (12) which is hermetically connected with the main box body (11), wherein a box cover (13) is hermetically arranged on the other side of the secondary box body (12); a speed reducing shaft (15) and a speed changing shaft (16) which are arranged in parallel with the crankshaft (2) are arranged in the auxiliary box body (12), a speed changing gear set is arranged between the speed reducing shaft (15) and the speed changing shaft (16) in a transmission mode, a connecting hole which is coaxial with the speed reducing shaft (15) and/or the speed changing shaft (16) is formed in the box cover (13), and the speed reducing shaft (15) and/or the speed changing shaft (16) face one end corresponding to the connecting hole to form an output end; the speed reducing shaft (15) is in transmission connection with the crankshaft (2).

2. The multiple output engine according to claim 1, characterized in that the speed change gear set includes a double gear slidably provided on the reduction shaft (15), and a high-speed driven gear (161) and a low-speed driven gear (162) provided on the speed change shaft (16), the double gear including a high-speed drive gear (151) and a low-speed drive gear (152) switchably engaged with the high-speed driven gear (161) and the low-speed driven gear (162), respectively.

3. The multi-output engine according to claim 2, wherein the sub-case (12) further has a shift shaft (17) disposed in parallel with the reduction shaft (15), and the shift shaft (17) has a shift fork for shifting the duplex 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. A multiple output engine according to any one of claims 1-3, wherein the auxiliary box (12) is further provided with at least one auxiliary shaft (18) arranged in parallel with the speed reducing shaft (15), the auxiliary shaft (18) is in transmission connection with the speed reducing shaft (15), the speed changing shaft (16) or an adjacent auxiliary shaft (18) through a speed reducing gear set, and one end of the auxiliary shaft (18) penetrates out of the box cover (13) or the auxiliary box (12) to form an output end.

5. A multiple output engine as claimed in any one of claims 1 to 3, characterized in that a clutch (4) is provided between the reduction shaft (15) and the crankshaft (2).

6. A multiple output engine as claimed in claim 5, wherein one end of the clutch (4) is drivingly connected to the crankshaft (2) and the other end has an output shaft (41), the output shaft (41) being drivingly connected to the reduction shaft (15) by intermeshing gears.

7. The multi-output engine according to claim 5, characterized in that a rotatable camshaft (3) is further arranged in the crankcase (1), the crankshaft (2) being in driving connection with the camshaft (3) via a reduction gear (6); the camshaft (3) is coaxially connected with the clutch (4).

8. The multiple output engine according to claim 7, wherein the reduction mechanism (6) includes a high speed gear (61) coaxially provided on the crankshaft (2) and a low speed gear (62) coaxially provided on the camshaft (3), the high speed gear (61) and the low speed gear (62) being intermeshed.

9. A multi-output engine as claimed in any one of claims 1 to 3, wherein a hollow hole (14) is formed between the main casing (11) and the auxiliary casing (12), and the lowest part of the hollow hole (14) is not lower than the bottom surface of the main casing (11) so that lubricating oil in the main casing (11) and lubricating oil in the auxiliary casing (12) can circulate.

10. An agricultural machine comprising an agricultural machine according to any one of claims 1 to 9.