CN213175827U - Vertical shaft general gasoline engine - Google Patents

Abstract

The utility model discloses a general gasoline engine of vertical axis, which comprises a crankshaft, bent axle one end is connected with output shaft transmission, the bent axle other end is connected with cooling body, bent axle counter-clockwise turning and drive cooling body counter-clockwise turning, its characterized in that: the cooling mechanism comprises an annular air guide channel, and the width of the left side of the air guide channel is smaller than that of the right side of the air guide channel; the output end of the output shaft is provided with a gasoline engine case cover which is partially circular, and the case cover mounting hole is arranged by taking the axis of the output shaft as a reference center. Adopt the utility model discloses a gasoline engine can improve the cooling effect.

Description

Vertical shaft general gasoline engine

Technical Field

The utility model relates to a general gasoline engine especially relates to a be applied to garden machine's gasoline engine.

Background

In outdoor power equipment using a small-sized general gasoline engine, such as a mower, in rainy days or when longer grass is cut, the power is obviously insufficient at ordinary times, and the phenomenon is represented by the reduction of the rotating speed and even flameout, so that the equipment needs larger torque under the condition. The conventional vertical axis gasoline engine adopts a crankshaft to directly drive a working load (such as a blade) to work, the torque is the torque of the gasoline engine, and when the condition is met, the rotating speed is reduced due to insufficient torque, and even the engine is flamed out. The user needs to reduce the speed to push the equipment at the moment, even if flameout occurs, the equipment needs to be restarted, and the experience is very poor. The existing outdoor power equipment can increase an acceleration and deceleration mechanism at the output end of a crankshaft of the gasoline engine to achieve the purpose of deceleration, but the structure makes the gasoline engine become complex, large in size and heavier.

A general gasoline engine is disclosed in chinese patent CN201865757U, and specifically discloses: the timing driving gear is arranged at one end of the crankshaft, an impeller is arranged at the other end of the crankshaft penetrating out of the crankcase, a timing driven gear is arranged on the camshaft, the timing driving gear is meshed with the timing driven gear, and one end of the camshaft, provided with the timing driven gear, penetrates out of the crankcase. The impeller comprises blades, and the top of each blade is in a clockwise arc line to the root; the ignition system comprises a primary coil, and the winding of the primary coil is wound in a counterclockwise mode. The above patent uses a camshaft as the output shaft and sets the output shaft to be rotated counterclockwise (as viewed from the output end). The output speed can be further adjusted through a gear by adopting a camshaft as an output shaft. However, the above patents still have problems: the cooling performance is not good, and the distribution of cooling air is not uniform.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vertical axis general gasoline engine that cooling effect is good.

In order to achieve the above object, the present invention is realized as follows: the utility model provides a vertical axis general purpose petrol engine, includes the bent axle, bent axle one end and output shaft transmission are connected, the bent axle other end is connected with cooling body, the bent axle anticlockwise rotation and drive cooling body anticlockwise rotation, its characterized in that: the cooling mechanism comprises an annular air guide channel, and the width of the left side of the air guide channel is smaller than that of the right side of the air guide channel; the output end of the output shaft is provided with a gasoline engine case cover which is partially circular, and the case cover mounting hole is arranged by taking the axis of the output shaft as a reference center. By adopting the arrangement mode, the air guide channel can be more reasonably arranged under the condition that the crankshaft rotates anticlockwise, so that cooling air is more uniformly distributed, and the cooling effect of the whole gasoline engine is better.

In order to further achieve a better cooling effect, the width of the air guide channel is gradually increased from the left side to the right side in a counterclockwise mode.

Preferably, the cooling mechanism comprises an air guide cover, a circular mounting opening for mounting the starting device is arranged in the middle of the air guide cover, and the annular shell of the air guide cover and the gasoline engine box body form the air guide channel; one end of the crankshaft, which is connected with the cooling mechanism, is driven by a starting device, and the starting device rotates anticlockwise.

Preferably, the cooling mechanism further comprises an impeller, and the impeller is driven by the crankshaft to rotate anticlockwise.

For further realizing convenience and reliability of driving, the starting device comprises a starting device shell, an outlet for starting the inhaul cable is arranged on the starting device shell, and the outlet for starting the inhaul cable is positioned in the direction from 6 o 'clock to 9 o' clock.

In order to further enable the output end to rotate in the same direction as before, the crankshaft and the output shaft are transmitted through a primary gear pair, and the output shaft rotates clockwise.

For further space saving, the output shaft is a camshaft.

Preferably, the transmission ratio of the output shaft to the crankshaft is 2.

The utility model discloses in, clockwise and anticlockwise all are with the axial visual angle of bent axle input end side.

Has the advantages that:

the utility model discloses a general gasoline engine of vertical axis adopts anticlockwise rotation's starting drive bent axle anticlockwise rotation to through the one-level gear pair connection output shaft, make the output shaft, also be camshaft clockwise rotation exactly. Meanwhile, the output end of the camshaft serving as an output shaft extends out of the gasoline engine case cover and can be connected with a working mechanism to drive the working mechanism to work. The structure of the gasoline engine is simplified, and the effect of increasing torque and adjusting rotating speed is realized. Furthermore, the utility model discloses well bent axle anticlockwise rotation, output shaft clockwise rotation have guaranteed the user habit, need not the customer and do the adjustment in addition to operating device again, adopt the utility model discloses a gasoline engine can directly realize the installation with operating device.

The utility model discloses in, through the design to the wind scooper for the wind-guiding passageway more adapts to anticlockwise rotation's impeller, bent axle and starting drive, can reach the effect more even, improve complete machine cooling effect, the performance that improves the gasoline engine and the reliability of cooling air distribution. Moreover, through the design to starting the cable export, make the utility model discloses a gasoline engine starting mode is more convenient, and is more humanized.

Drawings

FIG. 1 is a front view of an axial view from the crankshaft input end side of a gasoline engine in an embodiment;

FIG. 2 is a rear view of an axial view of an output end side of a crankshaft of the gasoline engine in the embodiment;

FIG. 3 is a cross-sectional view A-A of FIG. 1;

FIG. 4 is a schematic view of an air guiding cover;

FIG. 5 is a cross-sectional view B-B of FIG. 3;

FIG. 6 is a view showing a connection structure of the crankshaft and the output shaft in the embodiment.

Description of reference numerals: the device comprises a crankshaft 1, an output shaft 2, a starting device 3, a cooling mechanism 4, an air guide cover 5, a starting device shell 6, an air guide channel 7, an outlet 8 of a starting cable, a cable handle 9, a gasoline engine case cover 10, a driving gear 11, a driven gear 12, an impeller 13, a case cover mounting hole 14, a starting device mounting hole 15, a crankshaft input end 16, a crankshaft output end 17 and a starting device mounting hole 18.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and any modifications or replacements within the basic spirit of the embodiments still fall within the scope of the present invention claimed in the claims.

Example (b): as shown in fig. 1-6, the present invention provides a vertical shaft universal gasoline engine, especially a gasoline engine suitable for garden machinery, such as a lawn mower. The utility model discloses a gasoline engine includes bent axle 1, 1 one end of bent axle is the output, bent axle output 17 is connected with the transmission of output shaft 2. The other end of the crankshaft 1 is an input end, and the crankshaft input end 16 is connected with the starting device 3. The starting device 3 drives the crankshaft 1 to rotate, and the crankshaft 1 drives the output shaft 2 to rotate in a transmission mode.

The output shaft 2 is a camshaft, and one end of the camshaft extends out of a box cover of the gasoline engine and is in transmission connection with the working mechanism. For example, the camshaft extension is coupled to a mower blade.

The utility model discloses in, bent axle 1 with output shaft 2 adopts the one-level gear pair transmission to connect be provided with driving gear 11 on the bent axle be provided with on the output shaft with driving gear engaged with driven gear 12. Specifically, the output end of the crankshaft 1 is provided with a driving gear, and the camshaft is provided with a driven gear in meshing transmission with the driving gear. Wherein, the input end of the crankshaft 1 is taken as an axial visual angle. The starting device 3 in this embodiment rotates counterclockwise, the crankshaft 1 is driven by the starting device 3 to rotate counterclockwise, and the camshaft is driven by the crankshaft 1 to rotate clockwise through the primary gear pair.

As another embodiment of the present embodiment, a cooling mechanism 4 is further connected to the input end of the crankshaft 1. The cooling mechanism comprises an impeller 13 and an air guide cover 5, and the impeller 13 rotates anticlockwise under the driving of the crankshaft 1. The wind scooper 5 is arranged outside the impeller and connected with the engine box body. And the middle part of the air guide cover 5 is provided with a starting device mounting port 15 for connecting the starting device 3. And an annular air guide channel 7 is formed between the air guide cover 5 and the gasoline engine box body. The top of the wind scooper 5 is provided with a part extending upwards, and the width of the wind guiding channel 7 formed by the wind scooper 5 is smaller on the left side than on the right side. In one embodiment of the present invention, the width of the air guide channel 7 gradually increases from the left side to the right side.

In one embodiment of the present embodiment, the starting device housing 6 is mounted on the wind scooper 5 at the starting device mounting hole 18. And an outlet 8 for starting the inhaul cable is arranged on the starting device shell, and the starting inhaul cable extends out of the outlet and is connected with an inhaul cable handle 9. In this embodiment, the cable outlet is arranged in the 6-9 o' clock direction of the housing of the starting device. Optionally, but not limited to, the cable outlet may be disposed at 6 o 'clock, 7 o' clock, 8 o 'clock, or 9 o' clock of the housing of the starting device.

As another embodiment in this embodiment, a gasoline engine cover 10 is provided at the output end of the output shaft 2, the gasoline engine cover 10 is partially circular, and a cover mounting hole 14 is arranged with the axis of the output shaft 2 as a reference center.

As another embodiment in the present embodiment, the transmission ratio 2 of the output shaft 2 to the crankshaft 1 is set.

The vertical shaft general gasoline engine of the embodiment adopts the starting device 3 which rotates anticlockwise to drive the crankshaft 1 to rotate anticlockwise, and is connected with the output shaft 2 through the primary gear pair, so that the output shaft 2, namely the camshaft, rotates clockwise. Meanwhile, the camshaft as the output end of the output shaft 2 extends out of the gasoline engine case cover 10 and can be connected with a working mechanism to drive the working mechanism to work. The structure of the gasoline engine is simplified, and the effect of increasing torque and adjusting rotating speed is realized.

In addition, through the design of this embodiment to wind-guiding passageway 7 for wind-guiding passageway 7 more adapts to anticlockwise rotatory impeller 13, bent axle 1 and starting drive 3, can reach the effect with cooling air distribution more even, improve the complete machine cooling effect, improve the performance and the reliability of gasoline engine. Moreover, through the design to the export of the starting cable, the starting mode of the gasoline engine of the embodiment is more convenient and more humanized.

Claims (8)

1. The utility model provides a vertical axis general purpose petrol engine, includes the bent axle, bent axle one end and output shaft transmission are connected, the bent axle other end is connected with cooling body, the bent axle anticlockwise rotation and drive cooling body anticlockwise rotation, its characterized in that: the cooling mechanism comprises an annular air guide channel, and the width of the left side of the air guide channel is smaller than that of the right side of the air guide channel; the output end of the output shaft is provided with a gasoline engine case cover, the gasoline engine case cover is partially circular, and the mounting hole of the gasoline engine case cover is arranged by taking the axis of the output shaft as a reference center.

2. The vertical axis general purpose gasoline engine as defined in claim 1, wherein: the width of the air guide channel is gradually increased from the left side to the right side in a counterclockwise mode.

3. The vertical axis general purpose gasoline engine as defined in claim 2, wherein: the cooling mechanism comprises an air guide cover, a circular mounting opening for mounting a starting device is arranged in the middle of the air guide cover, and an annular shell of the air guide cover and the gasoline engine box body form the air guide channel; one end of the crankshaft, which is connected with the cooling mechanism, is driven by a starting device, and the starting device rotates anticlockwise.

4. The vertical axis general purpose gasoline engine as defined in claim 3, wherein: the cooling mechanism further comprises an impeller, and the impeller rotates anticlockwise under the driving of the crankshaft.

5. The vertical axis general purpose gasoline engine as defined in claim 3, wherein: the starting device comprises a starting device shell, an outlet for starting the inhaul cable is formed in the starting device shell, and the outlet for starting the inhaul cable is located in the direction from 6 o 'clock to 9 o' clock.

6. The vertical axis general purpose gasoline engine as defined in claim 1, 2, 3, 4 or 5, wherein: the crankshaft and the output shaft are in transmission through a primary gear pair, and the output shaft rotates clockwise.

7. The vertical axis general purpose gasoline engine as defined in claim 1, 2, 3, 4 or 5, wherein: the output shaft is a camshaft.

8. The vertical axis general purpose gasoline engine of claim 6, wherein: the output shaft is a camshaft.

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