CN219345246U

CN219345246U - Four-cylinder crankshaft for unmanned aerial vehicle engine

Info

Publication number: CN219345246U
Application number: CN202320928316.1U
Authority: CN
Inventors: 朱光伟; 欧三友; 黄婉婷; 朱光优; 张丁龙; 李显辉
Original assignee: Jiangmen Longgu Machine Manufacturing Co ltd
Current assignee: Jiangmen Longgu Machine Manufacturing Co ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-07-14
Anticipated expiration: 2033-04-21

Abstract

The utility model discloses a four-cylinder crankshaft for an unmanned aerial vehicle engine, which relates to the technical field of heavy-duty unmanned aerial vehicle engine crankshafts, and comprises a crankshaft body, a main shaft and a main shaft sleeve, wherein the main shaft is arranged in the crankshaft body, the main shaft sleeve is arranged on the side wall of the main shaft, a lubricating mechanism is arranged in the crankshaft body, and a antifriction mechanism is directly arranged between the main shaft and the main shaft sleeve; according to the technical scheme provided by the utility model, the lubricating mechanism is adopted, lubricating oil is injected into the crankshaft body through the oil groove during use, when the crankshaft body rotates, the lubricating oil in the oil groove can flow into the communicating groove under the action of centrifugal force, the movable frame in the communicating groove moves to one side under the pushing of the centrifugal force and the lubricating oil, and when the oil outlet in the movable frame is communicated with the communicating groove, the lubricating oil can flow between the main shaft sleeve and the main shaft through the communicating groove, so that the main shaft sleeve and the main shaft are fully lubricated, the transmission abrasion is reduced, the kinetic energy transmission efficiency is improved, and the transmission efficiency of a diesel engine is further improved.

Description

Four-cylinder crankshaft for unmanned aerial vehicle engine

Technical Field

The utility model relates to the technical field of engine crankshafts of heavy-duty unmanned aerial vehicles, in particular to a four-cylinder crankshaft for an engine of an unmanned aerial vehicle.

Background

The unmanned plane is called as unmanned plane for short, and is a unmanned plane operated by radio remote control equipment and a self-contained program control device. The machine has no cockpit, but is provided with an automatic pilot, a program control device and other devices. Personnel on the ground, ships or mother aircraft remote control station track, position, remote control, telemetering and digital transmission through radar and other equipment, a crankshaft is the most important part in an engine, and a four-cylinder crankshaft of an unmanned aerial vehicle engine is generally used for a large model plane unmanned aerial vehicle, a pesticide spraying unmanned aerial vehicle and the like.

The existing four-cylinder crankshafts are mostly in-line transmission, and in the transmission process, due to the increase of the stroke and the cylinder diameter, the shake of the four-cylinder crankshafts in the power transmission process is also continuously increased, the clamping of the movement of the cylinders is easily caused, the working efficiency is reduced, and the service life of the four-cylinder crankshafts is influenced.

Disclosure of Invention

The utility model aims to solve the technical problems of solving the problems of easy blocking of cylinder movement and reduced working efficiency in the prior art by overcoming the defects of the prior art and providing a four-cylinder crankshaft for an unmanned aerial vehicle engine.

In view of the above, the utility model provides a four-cylinder crankshaft for an unmanned aerial vehicle engine, which comprises a crankshaft body, a main shaft and a main shaft sleeve, wherein the main shaft is arranged in the crankshaft body, the main shaft sleeve is arranged on the side wall of the main shaft, a lubricating mechanism is arranged in the crankshaft body, and the main shaft sleeve are directly provided with an antifriction mechanism;

the lubrication mechanism comprises a movable frame and a spring, an oil groove is formed in the crankshaft body and the main shaft, a communication groove communicated with the oil groove is formed in the main shaft, a movable cavity is formed in the communication groove, the movable frame is slidably connected in the communication groove, one end of the movable frame is located in the movable cavity, the spring is fixedly mounted in the movable cavity, a communication groove communicated with the communication groove is formed in the main shaft, and an oil outlet matched with the communication groove is formed in the movable frame.

Optionally, a guide post is fixedly installed in the movable cavity, and one end of the movable frame is slidably connected to the side wall of the guide post.

Optionally, the spring is fixedly installed between the inner wall of the movable cavity and the movable frame, and the spring is located on the side wall of the guide post.

Optionally, antifriction mechanism includes antifriction steel ball and buffer sleeve, the inside fixed mounting of main shaft has fixed cover, the antifriction steel ball rotates to be connected inside the fixed cover, the main shaft cover is inside to be seted up with antifriction steel ball assorted arc wall, buffer sleeve fixed mounting is in inside the arc wall, the buffer sleeve is located antifriction steel ball one side.

Optionally, one end of the flow channel is communicated with a gap between the spindle and the spindle sleeve.

Optionally, a connecting rod shaft is fixedly installed inside the crankshaft body.

From the above technical solutions, the embodiment of the present utility model has the following advantages:

1. according to the four-cylinder crankshaft for the unmanned aerial vehicle engine, the lubricating mechanism is adopted, lubricating oil is injected into the crankshaft body through the oil groove when the crankshaft body rotates, the lubricating oil in the oil groove flows into the communicating groove under the action of centrifugal force when the crankshaft body rotates, the movable frame in the communicating groove moves to one side under the pushing of the centrifugal force and the lubricating oil, and when the oil outlet in the movable frame is communicated with the communicating groove, the lubricating oil flows between the main shaft sleeve and the main shaft through the communicating groove, so that the main shaft sleeve and the main shaft are fully lubricated, transmission abrasion is reduced, kinetic energy transmission efficiency is improved, and further the transmission efficiency of a diesel engine is improved.

2. According to the four-cylinder crankshaft for the unmanned aerial vehicle engine, the design of the antifriction mechanism is adopted, the surface contact is changed into the point contact by arranging the antifriction steel balls, the friction force is reduced, and the vibration generated in the transmission process of the crankshaft body can be buffered by arranging the buffer sleeve in the main shaft sleeve, so that a good anti-shake effect is achieved, the service life of the crankshaft body is effectively ensured, the energy conversion rate of a diesel engine is effectively improved, and the energy utilization rate is improved.

3. The utility model discloses a four-cylinder crankshaft for an unmanned aerial vehicle engine, which adopts the following components.

These features and advantages of the present utility model will be disclosed in detail in the following detailed description and the accompanying drawings.

Drawings

The utility model is further described with reference to the accompanying drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a partial cross-sectional view of a spindle of the present utility model;

fig. 3 is an enlarged view of fig. 2 a in accordance with the present utility model.

Reference numerals illustrate: 1. a crankshaft body; 2. an oil groove; 3. a spindle sleeve; 4. a link shaft; 5. a main shaft; 6. a communication groove; 7. a movable cavity; 8. a guide post; 9. a spring; 10. a movable frame; 11. an oil outlet; 12. a flow channel; 13. a fixed sleeve; 14. antifriction steel balls; 15. and a buffer sleeve.

Detailed Description

The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model.

A four-cylinder crankshaft for an unmanned aerial vehicle engine according to an embodiment of the present utility model is described in detail below with reference to the accompanying drawings.

Example 1

For easy understanding, referring to fig. 1 to 3, an embodiment of a four-cylinder crankshaft for an unmanned aerial vehicle engine provided by the utility model comprises a crankshaft body 1, a main shaft 5 and a main shaft sleeve 3, wherein the main shaft 5 is arranged in the crankshaft body 1, the main shaft sleeve 3 is arranged on the side wall of the main shaft 5, a lubrication mechanism is arranged in the crankshaft body 1, and the main shaft 5 and the main shaft sleeve 3 are directly provided with an antifriction mechanism;

the lubrication mechanism comprises a movable frame 10 and a spring 9, wherein the oil groove 2 is formed in the crankshaft body 1 and the main shaft 5, a communication groove 6 communicated with the oil groove 2 is formed in the main shaft 5, a movable cavity 7 is formed in the communication groove 6, the movable frame 10 is slidably connected in the communication groove 6, one end of the movable frame 10 is located in the movable cavity 7, the spring 9 is fixedly arranged in the movable cavity 7, a circulation groove 12 communicated with the communication groove 6 is formed in the main shaft 5, and an oil outlet 11 matched with the communication groove 6 is formed in the movable frame 10.

It should be noted that, during the use, through oil groove 2 with lubricating oil injection to bent axle body 1 inside, the inside lubricating oil of oil groove 2 can flow into inside intercommunication groove 6 under the effect of centrifugal force when bent axle body 1 rotates, the inside movable frame 10 of intercommunication groove 6 removes to one side under the promotion of centrifugal force and lubricating oil, the inside oil-out 11 of movable frame 10 is linked together with circulation groove 12 when lubricating oil can flow to between main shaft cover 3 and the main shaft 5 through circulation groove 12, make fully lubricate between main shaft cover 3 and the main shaft 5, reduce transmission wearing and tearing, improve kinetic energy transmission efficiency, and then improve diesel engine's transmission efficiency.

In some embodiments, as shown in fig. 3, a guide post 8 is fixedly installed inside the movable cavity 7, one end of a movable frame 10 is slidably connected to the side wall of the guide post 8, a spring 9 is fixedly installed between the inner wall of the movable cavity 7 and the movable frame 10, and the spring 9 is located on the side wall of the guide post 8.

The guide post 8 is provided to restrict the movement direction of the movable frame 10, prevent the movable frame 10 from being displaced during sliding, and the spring 9 is provided to push the movable frame 10 to one side when the rotation of the crankshaft body 1 is stopped, thereby preventing the lubricant from flowing out of the oil outlet 11 and reducing the consumption of the lubricant.

In some embodiments, as shown in fig. 1, a connecting rod shaft 4 is fixedly mounted inside the crankshaft body 1.

The crankshaft main body 1 can be connected to a connecting rod by providing a connecting rod shaft 4.

Example 2

In some embodiments, as shown in fig. 2, the antifriction mechanism includes antifriction steel balls 14 and a buffer sleeve 15, a fixed sleeve 13 is fixedly installed inside the spindle 5, the antifriction steel balls 14 are rotatably connected inside the fixed sleeve 13, an arc-shaped groove matched with the antifriction steel balls 14 is formed inside the spindle sleeve 3, the buffer sleeve 15 is fixedly installed inside the arc-shaped groove, the buffer sleeve 15 is located on one side of the antifriction steel balls 14, and one end of a circulation groove 12 is communicated with a gap between the spindle 5 and the spindle sleeve 3.

It should be noted that, the oil drain port is set up inside the main shaft cover 3, changes the surface contact into point contact through setting up antifriction steel ball 14, reduces frictional force, can cushion the vibrations that crankshaft body 1 produced at the transmission process through setting up buffer sleeve 15 inside main shaft cover 3, plays better anti-shake effect, effectively guarantees crankshaft body 1's life, effectively improves diesel engine energy conversion, improves the utilization ratio of energy.

The fixing sleeve 13, the antifriction steel ball 14 and the buffer sleeve 15 are well known parts and will not be described here.

Working principle: during use, lubricating oil is injected into the crankshaft body 1 through the oil groove 2, when the crankshaft body 1 rotates, the lubricating oil in the oil groove 2 flows into the communicating groove 6 under the action of centrifugal force, the movable frame 10 in the communicating groove 6 moves to one side under the pushing of the centrifugal force and the lubricating oil, when the oil outlet 11 in the movable frame 10 is communicated with the circulating groove 12, the lubricating oil flows between the main shaft sleeve 3 and the main shaft 5 through the circulating groove 12, so that the main shaft sleeve 3 and the main shaft 5 are fully lubricated, transmission abrasion is reduced, kinetic energy transmission efficiency is improved, further, the transmission efficiency of a diesel engine is improved, surface contact is changed into point contact through arranging the antifriction steel balls 14, friction force is reduced, vibration generated in the transmission process of the crankshaft body 1 can be buffered through arranging the buffer sleeve 15 in the main shaft sleeve 3, a better anti-shake effect is achieved, the service life of the crankshaft body 1 is effectively ensured, and the energy conversion rate and the energy utilization rate of the diesel engine are effectively improved.

The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A four jar crankshafts for unmanned aerial vehicle engine, its characterized in that: the novel grinding reduction device comprises a crankshaft body (1), a main shaft (5) and a main shaft sleeve (3), wherein the main shaft (5) is arranged inside the crankshaft body (1), the main shaft sleeve (3) is arranged on the side wall of the main shaft (5), a lubricating mechanism is arranged inside the crankshaft body (1), and the main shaft (5) and the main shaft sleeve (3) are directly provided with a grinding reduction mechanism;

the lubrication mechanism comprises a movable frame (10) and a spring (9), wherein an oil groove (2) is formed in the crankshaft body (1) and the main shaft (5), a communication groove (6) communicated with the oil groove (2) is formed in the main shaft (5), a movable cavity (7) is formed in the communication groove (6), the movable frame (10) is slidably connected inside the communication groove (6), one end of the movable frame (10) is located inside the movable cavity (7), the spring (9) is fixedly mounted inside the movable cavity (7), a communication groove (12) communicated with the communication groove (6) is formed in the main shaft (5), and an oil outlet (11) matched with the communication groove (6) is formed in the movable frame (10).

2. A four-cylinder crankshaft for an unmanned aerial vehicle engine according to claim 1, wherein: the movable cavity (7) is internally and fixedly provided with a guide post (8), and one end of the movable frame (10) is slidably connected to the side wall of the guide post (8).

3. A four-cylinder crankshaft for an unmanned aerial vehicle engine according to claim 2, wherein: the spring (9) is fixedly arranged between the inner wall of the movable cavity (7) and the movable frame (10), and the spring (9) is positioned on the side wall of the guide column (8).

4. A four-cylinder crankshaft for an unmanned aerial vehicle engine according to claim 1, wherein: the anti-friction mechanism comprises an anti-friction steel ball (14) and a buffer sleeve (15), wherein a fixed sleeve (13) is fixedly arranged in the main shaft (5), the anti-friction steel ball (14) is rotationally connected inside the fixed sleeve (13), an arc-shaped groove matched with the anti-friction steel ball (14) is formed in the main shaft sleeve (3), the buffer sleeve (15) is fixedly arranged inside the arc-shaped groove, and the buffer sleeve (15) is positioned on one side of the anti-friction steel ball (14).

5. A four-cylinder crankshaft for an unmanned aerial vehicle engine according to claim 1, wherein: one end of the circulation groove (12) is communicated with a gap between the main shaft (5) and the main shaft sleeve (3).

6. A four-cylinder crankshaft for an unmanned aerial vehicle engine according to claim 1, wherein: a connecting rod shaft (4) is fixedly arranged in the crankshaft body (1).