Integrated air pump driving structure

Abstract

The utility model provides an integrated air pump driving structure, and relates to the technical field of engine air pumps, and the integrated air pump driving structure comprises a driving assembly and an air pump assembly, and is provided with a driving crankshaft, a driving shaft, a crankshaft box, a cylinder sleeve, a moving piston and a transmission connecting rod; the problems that an existing air pump is mainly driven on an engine through a belt, a chain, a cam, a gear and the like, the design or change of the engine is large through the arrangement mode, the requirement for the transverse size space of the engine is high, an air pump driving mechanism is complex, and constraint space arrangement is limited can be solved, and the problem solving process is simple. The driving crankshaft is used for driving the driving shaft to rotate, the driving shaft drives the transmission connecting rod in the crankcase to move, the transmission connecting rod drives the moving piston to move for air pumping, and the driving shaft structure is adopted, so that the displacement of the air pump is greatly increased, the weight and the size of the air pump are effectively reduced, the mounting space of the air pump is effectively reduced, and the production cost is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of engine air pumps, and in particular, to an integrated air pump driving structure. Background Art

[0002] The air-entrained direct injection system is a new type of fuel injection system. Under low oil pressure, it uses gas-liquid two-phase cavitation and other effects to atomize the fuel into extremely fine droplets at high speed and evaporate quickly, achieving a good atomization effect of heavy oil. Its excellent heavy oil atomization ability and high lightweight characteristics are widely used in heavy oil engines for small and medium-sized UAVs. Its characteristics are that the air-entrained direct injection system consists of a fuel nozzle and an air-entrained direct injection nozzle. The injection pressure of the fuel nozzle is provided by the fuel pump, and the injection pressure of the air-entrained direct injection nozzle is provided by the air pump. Therefore, the air-entrained direct injection system requires an additional matching air pump, which provides air with a certain flow and pressure for the air-entrained direct injection system.

[0003] Currently, there are various driving forms of air pumps. Existing air pumps are mainly driven on the engine by belts, chains, cams, gears, etc. This layout has a large impact on the design or modification of the engine, and has high requirements on the lateral size space of the engine. The air pump driving mechanism is complex and the constraint space layout is limited. Summary of the invention

[0004] In order to overcome the existing deficiencies, the embodiment of the present application provides an integrated air pump drive structure, which can solve the problem that the existing air pump is mainly driven on the engine by belts, chains, cams, gears, etc. This arrangement has a great impact on the design or modification of the engine, and has high requirements on the lateral size space of the engine. The air pump drive mechanism is complex and the constraint space layout is limited.

[0005] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0006] An integrated air pump driving structure comprises a driving assembly and an air pump assembly.

[0007] The driving assembly comprises a driving crankshaft and a driving shaft, wherein the driving shaft is installed at the end of the driving crankshaft, and the driving shaft is interference-mounted at the rear end of the driving crankshaft.

[0008] The air pump assembly includes a crankcase, a cylinder liner, a moving piston and a transmission connecting rod. The driving crankshaft and the driving shaft are both rotatably arranged in the crankcase, the cylinder liner is arranged on the top of the crankcase, the moving piston is slidably arranged in the cylinder liner, and the two ends of the transmission connecting rod are respectively rotatably connected to the moving piston and the driving shaft.

[0009] In a specific embodiment, the drive shaft includes a crank arm, a main journal and a connecting rod shaft diameter, and the crank arm, the main journal and the connecting rod shaft diameter are integrally formed.

[0010] In a specific embodiment, the driving crankshaft and the crankcase are provided with a crankshaft bearing, and the end of the driving crankshaft is located in the crankshaft bearing.

[0011] In a specific implementation manner, the transmission connecting rod is provided with a mounting hole and a connecting rod bearing, and the connecting rod shaft diameter is arranged in the connecting rod bearing.

[0012] In a specific implementation manner, the moving piston is provided with a connecting groove, a piston pin is arranged in the connecting groove, and the end of the transmission connecting rod is rotatably sleeved on the surface of the piston pin.

[0013] In a specific embodiment, an extension bin is disposed on the top of the crankcase, and the cylinder liner is disposed in the extension bin.

[0014] In a specific embodiment, the crankcase is provided with a plurality of through holes, and the plurality of through holes are arranged at the corners of the crankcase.

[0015] In a specific embodiment, reinforcing ribs are provided on the outside of the crankcase, and an anti-corrosion layer is provided on the outer surface of the crankcase.

[0016] The advantages of the embodiments of the present application are: by setting a driving crankshaft, a driving shaft, a crankcase, a cylinder liner, a moving piston and a transmission connecting rod, it can solve the problem that the existing air pump is mainly driven on the engine by belts, chains, cams, gears, etc. This arrangement has a large impact on the design or modification of the engine, and has high requirements on the lateral size space of the engine. The air pump drive mechanism is complex and the constraint space layout is limited. In the problem solving process, the driving crankshaft is used to drive the driving shaft to rotate, the driving shaft drives the transmission connecting rod in the crankcase to move, and the transmission connecting rod drives the moving piston to pump air. By adopting a driving shaft structure, the displacement of the air pump is greatly improved, the weight and volume of the air pump are effectively reduced, the installation space of the air pump is effectively reduced, and the production cost is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the integrated air pump drive structure provided in the embodiment of the present application;

[0018] Figure 2 A schematic diagram of the structure of a drive assembly provided in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of the drive shaft structure provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the structure of an air pump assembly provided in an embodiment of the present application;

[0021] Figure 5 A schematic diagram of the crankcase structure provided in an embodiment of the present application.

[0022] In the figure: 100-driving assembly; 110-driving crankshaft; 111-crankshaft bearing; 120-driving shaft; 121-crank arm; 122-main journal; 123-connecting rod shaft diameter; 200-air pump assembly; 210-crankcase; 211-extension chamber; 212-through hole; 220-cylinder liner; 240-moving piston; 241-connecting groove; 242-piston pin; 250-transmission connecting rod; 251-connecting rod bearing. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with embodiments.

[0024] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0025] In the examples, unless otherwise specified, all the means used are conventional means in the art.

[0026] See also Figure 1-Figure 5 , an integrated air pump driving structure includes a driving component 100 and an air pump component 200.

[0027] See also Figure 1 , 2 3. The driving assembly 100 includes a driving crankshaft 110 and a driving shaft 120. The driving shaft 120 is installed at the end of the driving crankshaft 110, and the driving shaft 120 is interference-fitted at the rear end of the driving crankshaft 110.

[0028] Among them, the driving shaft 120 includes a crank arm 121, a main journal 122 and a connecting rod shaft diameter 123. The crank arm 121, the main journal 122 and the connecting rod shaft diameter 123 are designed as an integral part. By setting the crank arm 121, the main journal 122 and the connecting rod shaft diameter 123, the main journal 122 is interference-mounted at the rear end of the driving crankshaft 110, and the driving crankshaft 110 drives the main journal 122 to rotate, thereby driving the crank arm 121 and the connecting rod shaft diameter 123 to rotate.

[0029] See also Figure 1 , 3, 4 and 5, the air pump assembly 200 includes a crankcase 210, a cylinder liner 220, a moving piston 240 and a transmission connecting rod 250, the driving crankshaft 110 and the driving shaft 120 are both rotatably arranged in the crankcase 210, the cylinder liner 220 is arranged on the top of the crankcase 210, the moving piston 240 is slidably arranged in the cylinder liner 220, and the two ends of the transmission connecting rod 250 are respectively rotatably connected to the moving piston 240 and the driving shaft 120.

[0030] The driving crankshaft 110 and the crankcase 210 are provided with a crankshaft bearing 111 , and the end of the driving crankshaft 110 is located in the crankshaft bearing 111 . The crankshaft bearing 111 is provided to ensure that the driving crankshaft 110 rotates smoothly.

[0031] It should be noted that the transmission connecting rod 250 is provided with a mounting hole and a connecting rod bearing 251, and the connecting rod shaft diameter 123 is arranged in the connecting rod bearing 251. The connecting rod bearing 251 is provided to support the connecting rod shaft diameter 123 and the transmission connecting rod 250 to be smoothly rotated and connected to each other.

[0032] Specifically, the moving piston 240 is provided with a connecting groove 241, in which a piston pin 242 is arranged, and the end of the transmission connecting rod 250 is rotatably sleeved on the surface of the piston pin 242. By setting the piston pin 242, the end of the transmission connecting rod 250 is rotatably sleeved on the surface of the piston pin 242, so as to realize the rotational connection of the transmission connecting rod 250 with the piston pin 242.

[0033] In this embodiment, an extension chamber 211 is provided on the top of the crankcase 210 , and the cylinder liner 220 is provided in the extension chamber 211 . The extension chamber 211 is provided to install the air pump cylinder liner 220 .

[0034] In a specific embodiment, the crankcase 210 is provided with a plurality of through holes 212, and the plurality of through holes 212 are arranged at the corners of the crankcase 210. The plurality of through holes 212 are provided to fit bolts to mount the crankcase 210 on the engine.

[0035] In a specific embodiment, reinforcing ribs are provided on the outside of the crankcase 210, and an anti-corrosion layer is provided on the outer surface of the crankcase 210. By providing the reinforcing ribs, the structural strength of the outer shell is enhanced, and the anti-corrosion layer improves corrosion resistance and extends service life.

[0036] The working principle of the integrated air pump driving structure is as follows: when in use, the main journal 122 of the driving shaft 120 is installed to the rear end of the driving crankshaft 110 through interference connection, and then the connecting rod shaft diameter 123 of the driving shaft 120 is installed into the transmission connecting rod 250 of the transmission connecting rod 250, and then the crankcase 210 is installed to the driving crankshaft 110 and the outer side of the driving shaft 120 for protection. When the engine is running, the driving crankshaft 110 drives the main journal 122 to rotate, the main journal 122 drives the crank arm 121 to rotate, the crank arm 121 drives the connecting rod shaft diameter 123 to move, the connecting rod shaft diameter 123 drives the transmission connecting rod 250 in the crankcase 210 to move, and the transmission connecting rod 250 drives the moving piston 240 to move to pump air. By adopting the driving shaft 120 structure as a connecting piece, the displacement of the air pump is greatly improved, the weight and volume of the air pump are effectively reduced, the installation space of the air pump is effectively reduced, and the production cost is effectively reduced.

[0037] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. An integrated air pump drive structure, characterized in that: include A drive assembly (100), the drive assembly (100) comprising a drive crankshaft (110) and a drive shaft (120), the drive shaft (120) being mounted at an end of the drive crankshaft (110), and the drive shaft (120) being interference-mounted at a rear end of the drive crankshaft (110); An air pump assembly (200) comprises a crankcase (210), a cylinder liner (220), a moving piston (240) and a transmission connecting rod (250); the driving crankshaft (110) and the driving shaft (120) are both rotatably arranged in the crankcase (210); the cylinder liner (220) is arranged at the top of the crankcase (210); the moving piston (240) is slidably arranged in the cylinder liner (220); and the two ends of the transmission connecting rod (250) are rotatably connected to the moving piston (240) and the driving shaft (120) respectively.

2. The integrated air pump driving structure according to claim 1, characterized in that: The drive shaft (120) comprises a crank arm (121), a main journal (122) and a connecting rod shaft diameter (123); the crank arm (121), the main journal (122) and the connecting rod shaft diameter (123) are integrally formed.

3. The integrated air pump driving structure according to claim 1, characterized in that: The driving crankshaft (110) and the crankcase (210) are provided with a crankshaft bearing (111), and an end of the driving crankshaft (110) is located in the crankshaft bearing (111).

4. The integrated air pump driving structure according to claim 2, characterized in that: The transmission connecting rod (250) is provided with a mounting hole and a connecting rod bearing (251), and the connecting rod shaft diameter (123) is arranged in the connecting rod bearing (251).

5. The integrated air pump driving structure according to claim 1, characterized in that: The moving piston (240) is provided with a connecting groove (241), a piston pin (242) is arranged in the connecting groove (241), and the end of the transmission connecting rod (250) is rotatably sleeved on the surface of the piston pin (242).

6. The integrated air pump driving structure according to claim 1, characterized in that: An extension chamber (211) is arranged at the top of the crankcase (210), and the cylinder sleeve (220) is arranged in the extension chamber (211).

7. The integrated air pump driving structure according to claim 1, characterized in that: The crankcase (210) is provided with a plurality of through holes (212), and the plurality of through holes (212) are arranged at corners of the crankcase (210).

8. The integrated air pump driving structure according to claim 1, characterized in that: The crankcase (210) is provided with reinforcing ribs on its outer side, and an anti-corrosion layer is provided on the outer surface of the crankcase (210).

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