A gasoline engine power assembly

Abstract

The application provides a gasoline engine power assembly device and belongs to the technical field of gasoline engine equipment. The device solves the problem of insufficient speed regulation performance in the prior art. The application comprises a frame type rack, a unit assembly is fixedly connected to the upper end of the bottom of the frame type rack, a gasoline engine crankshaft is arranged in the main body of the crankcase, a generator assembly is fixedly connected to the other side of the crankcase cover, a first speed regulation gear is connected to the outside of the gear assembly shaft neck, a gear installation cavity is arranged in the main body of the crankcase, a second speed regulation gear is connected in the gear installation cavity, the second speed regulation gear is in meshing connection with the first speed regulation gear, an installation protrusion is formed on the outside of the cylinder barrel, a speed regulation seat is connected to one side of the installation protrusion, a speed regulation arm is connected to the upper end of the speed regulation seat, a hinged protruding column is formed on the upper end of the main body of the crankcase, a rotating arm is connected to the upper end of the hinged protruding column, through holes are arranged in the rotating arm and the speed regulation arm, and a speed regulation spring is connected between the rotating arm and the speed regulation arm. The application has the advantages of direct speed feedback and high speed regulation precision.

Description

Technical Field

[0001] This invention belongs to the technical field of gasoline engine equipment and relates to a gasoline engine powertrain device. Background Technology

[0002] As the core component of power output, the gasoline engine powertrain is widely used in general machinery, construction machinery, and other equipment. It mainly consists of the gasoline engine body, transmission components, and auxiliary components, and is used to convert the chemical energy of fuel into mechanical energy to output power. Existing small gasoline engine powertrains mostly adopt a split assembly structure, resulting in poor coaxiality between the crankshaft and the generator rotor, leading to significant transmission losses and operational vibrations. Speed ​​control mechanisms are often independently external, resulting in a fragmented structure and cumbersome assembly processes. They commonly employ a single-sided air-cooling layout, which leads to uneven heat dissipation and easily causes overheating. The integration of functional components such as fuel level monitoring and valve train transmission is low, resulting in a large axial dimension of the entire machine, making disassembly and maintenance inconvenient, and making it difficult to simultaneously achieve structural compactness and operational reliability.

[0003] Chinese patent publication number CN104533611B discloses a gasoline generator set with a high / low gear knob and an improved panel. The high / low gear knob includes a circular adjustment handle. One end of the circular adjustment handle extends outward to form a suspension rod, and the other end of the suspension rod extends outward to form a support rod. The support rod has a threaded section and a guide section, with the guide section located at the tail end of the support rod. The support rod is suspended on a support frame on the right gearbox. The threaded section is connected to a speed control fork via a nut. A compression spring is provided between the inner end of the speed control fork and the outer end of the support rod. One end of the speed control fork is connected to a speed control arm via a tension spring. One end of the speed control arm is connected to the carburetor throttle opening lever via a spring-loaded lever. The other end is fixed to the left housing via a selection shaft, and the two ends of the tension spring are hooked into the corresponding holes in the middle of the speed control arm and the speed control fork, respectively. When the circular adjustment handle is tightened clockwise, the speed control fork screws into the threaded section, compressing the compression spring to a fully compressed state. At the same time, the tension spring is in a stretched state, pulling the speed control arm. The spring pull rod rotates the throttle opening lever to the maximum opening state. At this time, the carburetor fuel supply is at its maximum, the unit runs at full speed, fuel consumption is at its highest, and the output power is high to meet the high power demand of the electrical equipment. When the generator is under low power load, the circular adjustment handle is tightened counterclockwise, the speed control fork is close to the end of the nut, the compression spring and the tension spring are in a natural extension and contraction state, the throttle opening lever is in a small opening state, and the generator speed is low.

[0004] The patent provides a gasoline generator set with a high / low gear knob and an improved panel. The speed is obtained by manually preset gears with the knob. It cannot directly collect the real-time speed of the power crankshaft, and there is no real-time speed feedback mechanism. When the load changes suddenly, it cannot automatically respond to adjust the throttle. The speed feedback is lagging, and the speed fluctuation is large under load disturbance, resulting in poor speed regulation smoothness. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in the prior art by providing a gasoline engine powertrain device.

[0006] The objective of this invention can be achieved through the following technical solution: A gasoline engine powertrain device, comprising a frame-type frame, with an assembly fixedly connected to the upper bottom of the frame-type frame. The assembly includes a gasoline engine component and a generator component. The gasoline engine component includes a crankcase body, with a gasoline engine crankshaft disposed inside the crankcase body. A crankcase cover is fixedly connected to one side of the crankcase body, and the generator component is fixedly connected to the other side of the crankcase cover. A cylinder barrel is formed obliquely upward on one side of the crankcase body, and a cylinder head is connected to the end of the cylinder barrel. A first bearing housing is formed in the crankcase body. The gasoline engine crankshaft extends to both sides as crankshaft journals, with the ends of the crankshaft journals having a tapered structure. A first crankshaft bearing is connected to the outside of one crankshaft journal on one side of the gasoline engine crankshaft. The gasoline engine crankshaft passes through a bearing hole in the first bearing housing, and the first crankshaft bearing is installed in the first bearing housing. A gear assembly journal is formed on one side of the crankshaft journal. A first speed regulating gear is connected to the outside of the gear assembly journal. A gear mounting cavity is opened inside the crankcase body. A second speed regulating gear is connected in the gear mounting cavity. The second speed regulating gear is an integral disc-shaped gear structure, and one side of the second speed regulating gear is formed into a conical gear hub structure. A receiving cavity is opened in the gear hub of the second speed regulating gear and connected to several centrifugal fly blocks. An assembly shaft is formed in the second speed regulating gear and connected to the gear mounting cavity through the assembly shaft. The second speed regulating gear is meshed with the first speed regulating gear. A mounting protrusion is formed on the outside of the cylinder. A speed regulating seat is connected to one side of the mounting protrusion. A speed regulating arm is connected to the upper end of the speed regulating seat. A hinged protrusion is formed at the upper end of the crankcase body. A rotating arm is connected to the upper end of the hinged protrusion. Both the rotating arm and the speed regulating arm have through holes, and a speed regulating spring is connected between the rotating arm and the speed regulating arm.

[0007] In the aforementioned gasoline engine powertrain, a flywheel with a fan is externally connected to the crankshaft journal on one side of the first crankshaft bearing. A connecting shaft section is formed at the end of the crankshaft journal, and the crankshaft journal at the end of the connecting shaft section is connected to the gasoline engine starter. A second crankshaft bearing is connected to the crankshaft journal on the other side of the gasoline engine crankshaft. A second bearing housing is formed in the crankcase cover. The crankshaft journal on the other side of the gasoline engine crankshaft passes through the second bearing housing, and the second crankshaft bearing is installed in the second bearing housing. A generator rotor is installed inside the generator assembly. A tapered sleeve extends from one side of the generator rotor. The end of the crankshaft journal is connected to the tapered sleeve. A cooling fan is connected to the crankshaft journal on the side of the gasoline engine crankshaft near the generator assembly. The cooling fan is located inside the crankcase cover. In the aforementioned gasoline engine powertrain, a cam connecting seat is formed on one side of the crankcase cover, and a camshaft body is connected to one side of the cam connecting seat. A cam bearing seat is formed inside the crankcase body. One side of the camshaft body has a shaft-like structure that extends into the crankcase body and is connected to the cam bearing seat. A limiting shoulder is formed in the crankshaft journal on the side of the gasoline engine crankshaft near the generator assembly. A drive gear is sleeved and connected in the crankshaft journal on the side of the limiting shoulder, and the drive gear is in contact with the outside of the camshaft body.

[0008] In the aforementioned gasoline engine powertrain device, a mounting protrusion is formed inside the crankcase body near the bottom, and an oil level sensor is fixedly connected to the end of the mounting protrusion.

[0009] In the aforementioned gasoline engine powertrain device, a flywheel shroud is connected to the other side of the mounting protrusion. The flywheel shroud covers the outside of the flywheel with a fan. A starter cover is connected to one side of the flywheel shroud. The starter cover covers the outside of the gasoline engine starter.

[0010] In the aforementioned gasoline engine powertrain, a spark plug assembly is connected to the upper end of the cylinder head, an intake connector is formed on one side of the cylinder head, a carburetor assembly is connected to one side of the intake connector, an air filter assembly is connected to one side of the carburetor assembly, a cylinder head is connected to one side of the cylinder head, an intake pipe is connected to the cylinder head, and the other end of the intake pipe is connected to the air filter assembly.

[0011] In the aforementioned gasoline engine powertrain, the outer wall of the cylinder barrel is provided with outwardly extending reinforcing ribs, and mounting posts are formed on the outer side of the reinforcing ribs and the outer side of the cylinder barrel. A gasoline engine igniter is fixedly connected to the end of the mounting post.

[0012] In the aforementioned gasoline engine powertrain, an exhaust flange seat is formed on one side of the cylinder head, an exhaust pipe is connected to the exhaust flange seat, and a muffler is connected to the other end of the exhaust pipe. The muffler has an elliptical cylindrical structure and is arranged in parallel on one side of the generator assembly. A protective plate is connected to the outer side of the frame-type frame on one side of the muffler.

[0013] In the aforementioned gasoline engine powertrain device, a fixed crossbeam is connected near the upper end of the frame-type engine, and a fuel tank assembly is fixedly connected to the upper end of the fixed crossbeam. The outer shape of the fuel tank assembly matches the inner frame of the frame-type engine, and an operation panel assembly is fixedly connected to one side of the frame-type engine.

[0014] In the aforementioned gasoline engine powertrain device, a mounting bracket is connected to one side of the crankcase body, and a stopper is connected in the mounting bracket. An oil sensor is installed in the crankcase body, and the oil sensor is installed inside the side wall of the crankcase body and extends out of the side wall of the crankcase body.

[0015] Compared with the prior art, the gasoline engine powertrain device provided by the present invention has the following beneficial effects: 1. The speed signal is collected by direct meshing of the first and second speed regulating gears on the crankshaft journal, resulting in a short transmission path, accurate and lag-free speed feedback. Combined with the lever-type torque balance structure consisting of a pivot arm, speed regulating arm, and speed regulating spring with a hinged cam as the swing fulcrum, it can effectively buffer speed fluctuations caused by sudden load changes, and the speed regulation process is smooth and stable; 2. The entire speed regulating mechanism is integrated with the cams and cams of the cylinder and crankcase body, eliminating the need for additional independent supports and simplifying the components. 1. It is easy to assemble and has strong vibration resistance and reliability. At the same time, the speed regulation characteristics can be flexibly adjusted by adjusting the installation position or parameters of the speed regulating spring to adapt to the working conditions of different power outputs. 2. The speed regulating gear pair, speed regulating mechanism, oil level monitoring and valve train system are highly integrated into the crankcase body and internal space. The whole machine has a compact structure and high space utilization. The crankshaft is supported by double bearings in the bearing seats of the crankcase body and the crankcase cover respectively. The support rigidity is high and the operating vibration and noise are low. The crankcase has a built-in oil level sensor, which can monitor the lubricating oil level in real time, avoid component wear caused by insufficient oil, and improve the lubrication reliability of the whole machine. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the unit's overall structure; Figure 3 This is a schematic diagram of the exploded structure of the generator set; Figure 4 This is a schematic diagram of the main structure of the crankcase; Figure 5 This is a schematic diagram of a gasoline engine crankshaft structure; Figure 6 This is a schematic diagram of the cylinder head structure; Figure 7 This is a schematic diagram of the crankcase cover structure.

[0017] In the diagram: 1. Frame frame; 2. Gasoline engine assembly; 21. Crankcase body; 211. Cylinder barrel; 2111. Mounting boss; 2112. Reinforcing rib; 2113. Mounting post; 212. First bearing housing; 213. Gear mounting cavity; 214. Second regulating gear; 2141. Gear hub; 2142. Centrifugal flyweight; 2143. Assembly shaft; 215. Hinge boss; 2151. Swivel arm; 216. Cam bearing housing; 217. Mounting boss; 22. Cylinder head; 221. Intake connector; 222. Carburetor assembly; 223. Air filter assembly; 224. Cylinder head; 225. Intake manifold; 226. Exhaust flange seat; 227. Exhaust manifold; 228. Spark plug assembly; 23. Gasoline engine crankshaft; 231. Crankshaft journal; 232. First crankshaft bearing. 233. Gear assembly journal; 234. First speed regulating gear; 235. Connecting shaft section; 236. Second crankshaft bearing; 237. Limiting shoulder; 238. Drive gear; 24. Crankcase cover; 241. Second bearing housing; 242. Cam connecting seat; 25. Speed ​​regulating seat; 251. Speed ​​regulating arm; 252. Speed ​​regulating spring; 26. Flywheel with fan; 27. Gasoline engine starter; 28. Flywheel fan cover; 29. ​​Starter cover; 20. Mounting bracket; 201. Interlock; 3. Generator assembly; 31. Generator rotor; 32. Conical sleeve; 4. Cooling fan; 5. Camshaft body; 6. Oil level sensor; 7. Gasoline engine igniter; 8. Muffler; 9. Protective plate; 10. Fixed crossbeam; 11. Fuel tank assembly; 12. Control panel assembly; 13. Oil sensor. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention. However, the present invention is not limited to these embodiments.

[0019] like Figures 1 to 7 As shown, this embodiment includes a frame frame 1, and a generator assembly is fixedly mounted on the bottom upper end of the frame frame 1. The generator assembly consists of a gasoline engine assembly 2 and a generator assembly 3. The gasoline engine assembly 2 includes a crankcase body 21, and a gasoline engine crankshaft 23 is installed inside the crankcase body 21. A crankcase cover 24 is fixedly connected to one side of the crankcase body 21, and the generator assembly 3 is fixedly connected to the other side of the crankcase cover 24. A cylinder barrel 211 is formed by extending obliquely upward from one side of the crankcase body 21, and a cylinder head 22 is sealed to the end of the cylinder barrel 211.

[0020] like Figure 2 , Figure 4 and Figure 5As shown, a first bearing housing 212 is formed inside the crankcase body 21. The two sides of the gasoline engine crankshaft 23 extend outward to form crankshaft journals 231, and the ends of the crankshaft journals 231 are tapered shaft structures. A first crankshaft bearing 232 is fitted on the crankshaft journal 231 on one side of the gasoline engine crankshaft 23. The gasoline engine crankshaft 23 passes through the bearing hole of the first bearing housing 212, and the first crankshaft bearing 232 is embedded and fixed in the first bearing housing 212. A second crankshaft bearing 236 is fitted on the crankshaft journal 231 on the other side of the gasoline engine crankshaft 23. A second bearing housing 241 is formed inside the crankcase cover 24. The crankshaft journal 231 on the other side of the gasoline engine crankshaft 23 passes through the second bearing housing 241, and the second crankshaft bearing 236 is embedded and fixed in the second bearing housing 241, forming a double-end support structure to ensure the coaxiality and operational stability of the crankshaft.

[0021] like Figures 2 to 4 As shown, a gear assembly journal 233 is formed on the crankshaft journal 231 on one side of the first crankshaft bearing 232. A first speed regulating gear 234 is fixedly fitted onto the outside of the gear assembly journal 233. A gear mounting cavity 213 is provided inside the crankcase body 21. A second speed regulating gear 214 is rotatably mounted in the gear mounting cavity 213. The second speed regulating gear 214 has an integral disc-shaped gear structure, and one side of the second speed regulating gear 214 is formed into a conical gear hub 2141 structure. A receiving cavity is provided in the gear hub of the second speed regulating gear 214 and several centrifugal fly weights 2142 are connected thereto. An assembly shaft 21 is formed in the second speed regulating gear 214. 43 and connected to the gear mounting cavity 213 via the assembly shaft, the second speed regulating gear 214 meshes with the first speed regulating gear 234 for transmission; the outer wall of the cylinder barrel 211 is formed with an outward mounting protrusion 2111, and a speed regulating seat 25 is fixedly connected to one side of the mounting protrusion 2111, and a speed regulating arm 251 is hinged to the upper end of the speed regulating seat 25; the upper end of the crankcase body 21 is formed with a hinged protrusion 215, and a rotating arm 2151 is hinged to the upper end of the hinged protrusion 215. Both the rotating arm 2151 and the speed regulating arm 251 have connecting through holes, and a speed regulating spring 252 is hung between the rotating arm 2151 and the speed regulating arm 251 to form a lever-type speed regulating balance structure.

[0022] like Figure 2 , Figure 3 and Figure 5As shown, the generator assembly 3 houses a generator rotor 31. A tapered sleeve 32 extends from the generator rotor 31 toward the gasoline engine. The end of the crankshaft journal 231 on the corresponding side of the gasoline engine crankshaft 23 mates with the tapered surface of the tapered sleeve 32, achieving coaxial, backlash-free power transmission. A cooling fan 4 is also fixedly mounted on the crankshaft journal 231 on the side of the gasoline engine crankshaft 23 closest to the generator assembly 3. The cooling fan 4 is located in the internal chamber of the crankcase cover 24 and rotates synchronously with the crankshaft, providing forced air cooling to the generator side and the valve train.

[0023] To elaborate further, such as Figure 3 , Figure 5 and Figure 7 As shown, a cam connecting seat 242 is formed on one side of the crankcase cover 24, and a camshaft body 5 is mounted on one side of the cam connecting seat 242. A cam bearing seat 216 is correspondingly formed inside the crankcase body 21. One side of the camshaft body 5 is a shaft-like structure that extends into the crankcase body 21 and is rotatably supported in the cam bearing seat 216. A limiting shoulder 237 is formed on the crankshaft journal 231 on the side of the gasoline engine crankshaft 23 near the generator assembly 3. A drive gear 238 is sleeved and fixed on the crankshaft journal 231 on the side of the limiting shoulder 237. The teeth of the drive gear 238 contact and transmit power with the contour surface of the camshaft body 5, and the crankshaft directly drives the camshaft body 5 to complete the valve train operation.

[0024] To elaborate further, such as Figure 4 As shown, a mounting protrusion 217 is formed upwards near the bottom of the crankcase body 21. An oil level sensor 6 is fixedly connected to the end of the mounting protrusion 217 to detect the level of lubricating oil in the crankcase. An oil sensor 13 is also installed inside the side wall of the crankcase body 21. The detection end of the oil sensor 13 extends into the crankcase, and the main body extends out of the side wall of the crankcase body 21 to monitor the working status of the oil in real time.

[0025] To elaborate further, such as Figure 2 and Figure 3 As shown, a flywheel 26 with a fan is fixedly mounted on the outside of the crankshaft journal 231 on one side of the first crankshaft bearing 232. The end of the crankshaft journal 231 extends outward to form a connecting shaft section 235. The crankshaft journal 231 at the end of the connecting shaft section 235 is connected to the gasoline engine starter 27 for driving the engine. A flywheel fan cover 28 is fixedly connected to the other side of the mounting protrusion 2111. The flywheel fan cover 28 covers the outside of the flywheel 26 with a fan and serves both as a guide for airflow and as a protection against rotation. A starter cover 29 is also fixedly connected to one side of the flywheel fan cover 28. The starter cover 29 covers the outside of the gasoline engine starter 27.

[0026] To elaborate further, such as Figure 2 and Figure 6As shown, a spark plug assembly 228 is installed on the upper end of the cylinder head 22; an intake connector 221 is formed on one side of the cylinder head 22, and a carburetor assembly 222 is fixedly connected to one side of the intake connector 221. An air filter assembly 223 is connected to the intake side of the carburetor assembly 222. A cylinder head 224 is fixedly connected to the top of the cylinder head 22, and an intake pipe 225 is connected to the cylinder head 224. The other end of the intake pipe 225 is connected to the air filter assembly 223, forming a complete intake filtration and fuel-air mixing passage.

[0027] To elaborate further, such as Figure 2 and Figure 4 As shown, the outer wall of the cylinder barrel 211 is formed with multiple outwardly extending reinforcing ribs 2112. The outer side of the reinforcing ribs 2112 and the side of the cylinder barrel 211 are formed together with mounting posts 2113. The end of the mounting post 2113 is fixedly connected to a gasoline engine igniter 7 to provide high-voltage ignition power to the spark plug assembly.

[0028] To elaborate further, such as Figure 1 and Figure 6 As shown, an exhaust flange seat 226 is formed on the other side of the cylinder head 22, and an exhaust pipe 227 is sealed and connected to the exhaust flange seat 226. The other end of the exhaust pipe 227 is connected to a muffler 8. The muffler 8 has an elliptical cylindrical structure and is arranged parallel to one side of the generator assembly 3. A protective plate 9 is fixedly connected to the frame frame 1 outside the muffler 8, which serves as heat insulation and safety protection.

[0029] To elaborate further, such as Figure 1 As shown, a fixed crossbeam 10 is fixedly connected to the upper part of the frame-type frame 1. An oil tank assembly 11 is fixedly installed on the upper end of the fixed crossbeam 10. The outer contour of the oil tank assembly 11 is adapted to the inner frame of the frame-type frame 1, and the installation is stable. An operation panel assembly 12 is fixedly connected to one side of the frame-type frame 1, which integrates the power output interface and the overall control switch. A mounting bracket 20 is also fixedly connected to one side of the crankcase body 21. An interruptor 201 is installed in the mounting bracket 20 for circuit control and overload protection.

[0030] The working principle of this invention is as follows: During operation, the fuel stored in the fuel tank assembly 11 is delivered to the carburetor assembly 222, where it mixes with air filtered by the air filter assembly 223 and guided by the intake manifold 225 to form a combustible mixture. This mixture enters the cylinder through the intake connector 221 of the cylinder head 22. High-voltage electrical energy is provided by the gasoline engine igniter 7 and ignited by the spark plug assembly 228 to perform combustion, driving the gasoline engine crankshaft 23 to rotate around the first crankshaft bearing 232 in the first bearing housing 212 and the second crankshaft bearing 232 in the second bearing housing 241. The second crankshaft bearing 236 rotates; one end of the gasoline engine crankshaft 23 drives the generator rotor 31 to rotate and generate electricity through the tapered sleeve 32, and the other end is connected to the gasoline engine starter 27 through the connecting shaft section 235 to start the whole engine. At the same time, it drives the flywheel 26 with fan to rotate, and the flywheel fan cover 28 guides the air to cool the cylinder side. The cooling fan 4 on the gasoline engine crankshaft 23 rotates with the shaft to force air cooling to the generator side and the valve train; the gasoline engine crankshaft 23 is equipped with the first speed regulating gear 234 on the journal 233 through the gear assembly. The second speed regulating gear 214 inside the meshing gear mounting cavity 213 transmits the speed signal to the speed regulating arm 251 on the speed regulating seat 25. This, in conjunction with the lever balance structure formed by the rotating arm 2151 on the hinged protrusion 215 and the speed regulating spring 252, achieves speed regulation. Simultaneously, the drive gear 238 on the gasoline engine crankshaft 23, positioned by the limiting shoulder 237, directly contacts the drive camshaft body 5. The camshaft body 5 is supported between the cam bearing seat 216 and the cam connecting seat 242, completing the cylinder valve timing action. The oil level sensor 6 on the protrusion 217 inside the axle box body 21 and the oil sensor 13 on the side wall monitor the lubricating oil status in real time. The exhaust gas after combustion is discharged into the muffler 8 after noise reduction through the exhaust pipe 227 connected to the exhaust flange seat 226. The frame frame 1 supports and fixes all components. The cylinder head 224 seals the top of the cylinder. The operation panel assembly 12 integrates power output and control functions. The protective plate 9 provides safety protection for the muffler side. The circuit breaker 201 on the mounting bracket 20 realizes circuit protection.

[0031] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0032] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A gasoline engine powertrain device, comprising a frame-type frame (1), wherein an engine assembly is fixedly connected to the upper bottom of the frame-type frame (1), the engine assembly comprising a gasoline engine assembly (2) and a generator assembly (3), wherein the gasoline engine assembly (2) comprises a crankcase body (21), wherein a gasoline engine crankshaft (23) is disposed inside the crankcase body (21), wherein a crankcase cover (24) is fixedly connected to one side of the crankcase body (21), and the generator assembly (3) is fixedly connected to the other side of the crankcase cover (24), wherein a cylinder barrel (211) is formed obliquely upward on one side of the crankcase body (21), wherein a cylinder head (22) is connected to the end of the cylinder barrel (211), and a first bearing seat (212) is formed in the crankcase body (21), characterized in that: The gasoline engine crankshaft (23) extends to both sides as crankshaft journals (231), and the ends of the crankshaft journals (231) are tapered shaft structures. A first crankshaft bearing (232) is externally connected to one side of the crankshaft journal (231) of the gasoline engine crankshaft (23). The gasoline engine crankshaft (23) passes through the bearing hole in the first bearing housing (212), and the first crankshaft bearing (232) is installed in the first bearing housing (212). A gear assembly journal (233) is formed on the crankshaft journal (231) on one side of the first crankshaft bearing (232). A first speed regulating gear (234) is externally connected to the gear assembly journal (233). A gear mounting cavity (213) is opened inside the crankcase body (21). A second speed regulating gear (214) is connected in the wheel mounting cavity (213). The second speed regulating gear (214) meshes with the first speed regulating gear (234). A mounting protrusion (2111) is formed on the outside of the cylinder barrel (211). A speed regulating seat (25) is connected to one side of the mounting protrusion (2111). A speed regulating arm (251) is connected to the upper end of the speed regulating seat (25). A hinged protrusion (215) is formed at the upper end of the crankcase body (21). A rotating arm (2151) is connected to the upper end of the hinged protrusion (215). Both the rotating arm (2151) and the speed regulating arm (251) have through holes, and a speed regulating spring (252) is connected between the rotating arm (2151) and the speed regulating arm (251).

2. The gasoline engine powertrain device according to claim 1, characterized in that: The second speed regulating gear (214) is an integral disc-shaped gear structure, and one side of the second speed regulating gear (214) is formed into a conical gear hub (2141) structure. The gear hub (2141) of the second speed regulating gear (214) has a receiving cavity and is connected to a number of centrifugal flying blocks (2142). The second speed regulating gear (214) has an assembly shaft (2143) and is connected to the gear mounting cavity (213) through the assembly shaft.

3. The gasoline engine powertrain device according to claim 1, characterized in that: A flywheel with a fan (26) is externally connected to the crankshaft journal (231) on one side of the first crankshaft bearing (232). A connecting shaft section (235) is formed at the end of the crankshaft journal (231), and the crankshaft journal (231) at the end of the connecting shaft section (235) is connected to the gasoline engine starter (27). A second crankshaft bearing (236) is connected in the crankshaft journal (231) on the other side of the gasoline engine crankshaft (23). A second bearing seat (241) is formed in the crankcase cover (24). The crankshaft journal (231) on the other side of the gasoline engine crankshaft (23) is... 231) The second bearing housing (241) is passed through and the second crankshaft bearing (236) is installed in the second bearing housing (241). The generator assembly (3) is equipped with a generator rotor (31). A tapered sleeve (32) extends out from one side of the generator rotor (31). The end of the crankshaft journal (231) is connected to the tapered sleeve (32). A cooling fan (4) is connected to the crankshaft journal (231) on the side of the gasoline engine crankshaft (23) near the generator assembly (3). The cooling fan (4) is located inside the crankcase cover (24).

4. The gasoline engine powertrain device according to claim 1, characterized in that: A cam connecting seat (242) is formed on one side of the crankcase cover (24), and a camshaft body (5) is connected to one side of the cam connecting seat (242). A cam bearing seat (216) is formed inside the crankcase body (21). One side of the camshaft body (5) is a shaft structure that extends into the crankcase body (21) and is connected to the cam bearing seat (216). A limiting shoulder (237) is formed in the crankshaft journal (231) of the gasoline engine crankshaft (23) near the generator assembly (3). A drive gear (238) is sleeved and connected in the crankshaft journal (231) on the side of the limiting shoulder (237). The drive gear (238) is in contact with the outside of the camshaft body (5).

5. The gasoline engine powertrain device according to claim 1, characterized in that: An mounting protrusion (217) is formed inside the crankcase body (21) near the bottom end. An oil level sensor (6) is fixedly connected to the end of the mounting protrusion (217). A mounting bracket (20) is connected to one side of the crankcase body (21). An interruptor (201) is connected in the mounting bracket (20). An oil sensor (13) is installed in the crankcase body (21). The oil sensor (13) is installed inside the side wall of the crankcase body (21) and extends out of the side wall of the crankcase body (21).

6. The gasoline engine powertrain device according to claim 1, characterized in that: The other side of the mounting protrusion (2111) is connected to a flywheel shroud (28), which covers the outside of the flywheel (26) with a fan. The flywheel shroud (28) is connected to a starter cover (29) on one side, which covers the outside of the gasoline engine starter (27).

7. The gasoline engine powertrain device according to claim 1, characterized in that: A spark plug assembly (228) is connected to the upper end of the cylinder head (22). An intake connector (221) is formed on one side of the cylinder head (22). A carburetor assembly (222) is connected to one side of the intake connector (221). An air filter assembly (223) is connected to one side of the carburetor assembly (222). A cylinder head (224) is connected to one side of the cylinder head (222). An intake pipe (225) is connected to the cylinder head (224). The other end of the intake pipe (225) is connected to the air filter assembly (223).

8. The gasoline engine powertrain device according to claim 1, characterized in that: The outer wall of the cylinder barrel (211) is formed with outwardly extending reinforcing ribs (2112), and mounting posts (2113) are formed on the outer side of the reinforcing ribs (2112) and the outer side of the cylinder barrel (211). A gasoline engine igniter (7) is fixedly connected to the end of the mounting post (2113).

9. The gasoline engine powertrain device according to claim 1, characterized in that: An exhaust flange seat (226) is formed on one side of the cylinder head (22), an exhaust pipe (227) is connected in the exhaust flange seat (226), and a muffler (8) is connected to the other end of the exhaust pipe (227). The muffler (8) has an elliptical cylindrical structure and is arranged in parallel on one side of the generator assembly (3). A protective plate (9) is connected to the outside of the frame frame (1) on one side of the muffler (8).

10. The gasoline engine powertrain device according to claim 1, characterized in that: The frame frame (1) is connected to a fixed crossbeam (10) near the upper end. The upper end of the fixed crossbeam (10) is fixedly connected to an oil tank assembly (11). The outer shape of the oil tank assembly (11) matches the inner frame of the frame frame (1). The frame frame (1) is fixedly connected to an operation panel assembly (12) on one side.

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