Air connecting device of air compressor head

Abstract

The invention provides an air compressor head air connecting device which comprises a first bottom plate, a second bottom plate is installed at the top of the first bottom plate, a support is installed at the top of the second bottom plate, a butt joint mechanism is installed on the support, and a protection mechanism is installed at the top of the butt joint mechanism. A workpiece placing mechanism is installed on the top of the second bottom plate and located on the front side of the support. Compared with the prior art, the air connecting device for testing the machine head using the pagoda joint has the following beneficial effects that the air connecting device for testing the machine head using the pagoda joint is provided, the screwing butt joint form is converted into the butt joint pressing form aiming at the characteristic that the pagoda joint cannot be screwed, and the problem that the machine head using the pagoda joint in the market is difficult to test is solved; therefore, the machine head using the pagoda joint can be rapidly tested on a production line, and the problems that an existing machine head gas connecting tool provided in the background technology is limited in use, high in equipment cost, tedious in operation and large in personnel operation labor intensity are solved.

Description

Technical Field

[0001] This invention relates to an air compressor head air inlet device, belonging to the field of air compressor head inlet devices. Background Technology

[0002] Currently, the performance testing of air compressor heads includes testing whether the maximum breaking voltage pressure of the compressor head meets the design specifications. This requires connecting the compressor head under test to the air tank through a series of connectors and high-pressure pipes. A pressure sensor is installed on the air tank to detect the pressure inside the air tank in order to determine the compressor head's air-compressing capacity - maximum breaking voltage pressure.

[0003] Currently, the air connection device used to connect the tested connector is generally a machine head with screws (internal or external) on both ends, either self-contained or as part of a matching set. The air connection fixture is designed with a threaded end that matches the machine head and a male end that can be matched with a self-locking quick connector. The female end of the self-locking quick connector is connected to the inlet end of the high-pressure pipe, and the outlet end of the high-pressure pipe is connected to a check valve. The check valve is connected to an air tank. The air tank has a connector for connecting a pressure sensor and is equipped with a safety valve, pressure gauge, drain valve, and a solenoid valve and silencer for connecting to release air, thus completing the closed-loop air circuit.

[0004] However, existing gas connection tools have the following shortcomings:

[0005] 1. Limited applicability: This type of air connection tool is only suitable for machine heads with screw connectors, and not for machine heads with pagoda connectors, etc.

[0006] 2. High equipment cost: When using the production line, multiple workstations are required to ensure the testing cycle time. One test is performed, and another offline pre-installs the gas connection tooling.

[0007] 3. Cumbersome operation: It is necessary to use a wrench to screw the gas connection fixture onto the test head in advance offline. After the test head is placed in the test station, the self-locking quick connector is used for connection and installation. After the test head is tested and removed, the gas connection fixture is removed with a wrench and installed on the gas outlet connector of the next test head.

[0008] 4. High labor intensity for operators: During production line testing, operators need to repeatedly disassemble and assemble the gas connection tools. Summary of the Invention

[0009] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an air compressor head air inlet device.

[0010] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0011] An air compressor head air receiving device includes a base plate one, a base plate two mounted on the top of the base plate one, a bracket mounted on the top of the base plate two, a docking mechanism mounted on the bracket, a protective mechanism mounted on the top of the docking mechanism, and a workpiece placement mechanism mounted on the top of the base plate two and in front of the bracket.

[0012] Furthermore, the workpiece placement mechanism includes a placement seat 1 and a placement seat 2 disposed on the top of the base plate 2, and a fixing seat. The fixing seat and the placement seat 1 are respectively located on both sides of the placement seat 2. The top of the placement seat 1 and the placement seat 2 are respectively provided with placement grooves that cooperate with the air compressor head. The top of the placement seat 2 and the fixing seat are respectively bolted with a fixing block, and the fixing block is press-fitted to the air compressor head.

[0013] Furthermore, the bracket includes columns, which are fixed to the top of the base plate two. A cylinder fixing plate and a rotating shaft fixing plate are respectively fixed between the two columns, and the rotating shaft fixing plate is located above the cylinder fixing plate.

[0014] Furthermore, the docking mechanism includes a cylinder mounting plate fixed on the cylinder mounting plate, an L-shaped cylinder fixing bracket mounted on the cylinder mounting plate, a cylinder rotatably connected to the L-shaped cylinder fixing bracket, a piston rod provided at the output end of the cylinder, and the end of the piston rod connected to a Y-type connector.

[0015] Furthermore, the docking mechanism also includes a rotating shaft support plate fixed on the rotating shaft fixing plate. The end of the rotating shaft support plate is rotatably connected to the rotating rod via an optical axis. A connecting end is provided in the middle of one side of the outer surface of the rotating rod. The Y-type connector is rotatably connected to the connecting end via an optical axis.

[0016] Furthermore, the rotating rod has an airflow channel inside, with both ends of the airflow channel extending to the outer surfaces of both sides of the rotating rod. A silicone rubber gasket is installed at one end of the airflow channel. The silicone rubber gasket has a circular structure and is compatible with the pagoda connector on the air compressor head. A threaded hole is provided at the opening of the other end of the airflow channel, and the threaded hole is connected and fixed to an external air pipe connector.

[0017] Furthermore, the protective mechanism includes a top plate fixed to the top of the column, a cover plate hinged to each of the four sides of the bottom of the top plate, a protective box fixed at the top center of the top of the top plate, a motor installed on the top of the protective box, and a drive assembly inside the protective box.

[0018] Furthermore, the drive assembly includes an auxiliary bevel gear rotatably connected to the bottom of the protective box and an active bevel gear rotatably connected to the top of the protective box. The active bevel gear is fixedly connected to the bottom output end of the motor. Four drive bevel gears mesh between the active bevel gear and the auxiliary bevel gear. A drive shaft is connected to the shaft end of the drive bevel gear, and a drive sprocket is connected to the other end of the drive shaft. The drive sprocket is connected to a driven sprocket via a chain, and a rotating shaft is fixedly connected to the middle of the driven sprocket.

[0019] Furthermore, a take-up roller is fixed on the rotating shaft. The take-up roller has two sets of take-up grooves. An outer traction rope and an inner traction rope are wound and wound in the take-up grooves respectively. The inner traction rope and the outer traction rope are wound in opposite directions. The ends of the outer traction rope and the inner traction rope respectively extend to the top and bottom of the protective box. The end of the outer traction rope is connected and fixed to the outer surface of the cover plate from top to bottom. The end of the inner traction rope is connected and fixed to the inner surface of the cover plate from top to bottom. A travel seat is provided at each of the four ends of the top of the bottom plate. An electromagnet is provided on the outer surface of the side of the travel seat. An adsorption block that cooperates with the electromagnet is provided on the outer surface of the cover plate.

[0020] Furthermore, the inner bottom of the protective box is also provided with several sets of support seats that cooperate with the auxiliary bevel gear, the active bevel gear, the transmission shaft and the rotating shaft.

[0021] The beneficial effects of this invention are:

[0022] This invention provides an air connection device for testing machine heads using pagoda connectors. Addressing the limitation of pagoda connectors being unable to be screwed on, the device transforms the screwing connection into a clamping connection, thus solving the problem of difficult testing of machine heads using pagoda connectors in the market.

[0023] This invention uses a cylinder to provide power and designs a transmission structure that adapts to the shape of the machine head, thereby enabling machine heads using pagoda connectors to achieve rapid testing on the production line. It provides a new solution for testing machine heads with non-threaded connectors, addressing the problems mentioned in the background art, such as the limitations of existing machine head air connection tooling, high equipment costs, cumbersome operation, and high labor intensity for personnel.

[0024] The device of this invention is simple to operate, easy to replace, widely applicable (it can also be used for air compressor heads with threaded connectors; the docking position can be changed to match the connector size), safe and reliable, low cost, and significantly reduces the labor intensity of operators, thus improving production efficiency. It is a solution for air connection of air compressor heads during testing.

[0025] Through the design of the workpiece placement mechanism, the air compressor head can be placed in the placement slots on placement seat one and placement seat two during use. Then, two fixing blocks are fixed to placement seat two and the fixing seat respectively by bolts. The bottom ends of the two fixing blocks press against the air compressor head, thereby locking the air compressor head, placement seat one, and placement seat two together, which facilitates the subsequent docking of the docking mechanism.

[0026] Through the design of the docking mechanism, after the workpiece placement mechanism locks and fixes the air compressor head, the cylinder is started through the electrical control box. The cylinder pushes the rotating rod to rotate around the end of the rotating shaft support plate as the fulcrum, so that the rotating rod rotates to a vertical state consistent with the rotating shaft support plate. At this time, the silicone rubber gasket on the outer surface of the rotating rod is squeezed and docked with the pagoda joint on the air compressor head, thereby achieving a sealing effect and ensuring that there is no air leakage.

[0027] Through the design of the protective mechanism, when the equipment is not in use, the cover plate inside the mechanism will shield the sides of the device. When the device is in use, the cover plate inside the protective mechanism will rotate and open to facilitate the operation of the device. The operation process of the protective structure is as follows: the motor drives the active bevel gear to rotate, the active bevel gear drives several driving bevel gears to rotate, and the driving bevel gears simultaneously drive the auxiliary bevel gear at the bottom to rotate. Thus, the auxiliary bevel gear, driving bevel gear, and active bevel gear form a stable rotational transmission structure. While the driving bevel gear is rotating, it drives the active sprocket to rotate through the transmission shaft. The active sprocket drives the driven sprocket to rotate through the material bar. While the driven sprocket is rotating, it drives the driven sprocket to rotate through the material bar. The rotating shaft drives the take-up roller to rotate. When the take-up roller rotates clockwise, the two take-up slots on the take-up roller will respectively perform the actions of taking up the outer traction rope and releasing the inner traction rope. Then, the pull of the outer traction rope will drive the cover plate to rotate and open from the bottom of the top plate. The release of the inner traction rope can satisfy the rotational opening action of the cover plate. When the take-up roller rotates counterclockwise, the two take-up slots on the take-up roller will respectively perform the actions of releasing the outer traction rope and taking up the inner traction rope. Then, the stretch of the inner traction rope will pull the rotated and opened cover plate back to the initial position, so that the bottom of the cover plate and the pull of the outer traction rope will cause the cover plate to abut against the travel seat at the top of the bottom plate. The electromagnet on the outer surface of the travel seat is electromagnetically attracted to the adsorption block on the inner outer surface of the cover plate. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of an air compressor head air receiving device according to the present invention;

[0030] Figure 2 This is an exploded structural diagram of an air compressor head air receiving device according to the present invention;

[0031] Figure 3 This is a partial structural diagram of an air compressor head air inlet device according to the present invention. Figure 1 ;

[0032] Figure 4 This is a partial structural diagram of an air compressor head air inlet device according to the present invention. Figure 2 ;

[0033] Figure 5 This is a partial structural diagram of an air compressor head air inlet device according to the present invention. Figure 3 ;

[0034] Figure 6 This is a schematic diagram of the workpiece placement mechanism of an air compressor head air receiving device according to the present invention;

[0035] Figure 7 This is a schematic diagram of the docking mechanism of an air compressor head air receiving device according to the present invention;

[0036] Figure 8 This is a partial structural diagram of an air compressor head air inlet device according to the present invention. Figure 4 ;

[0037] Figure 9 This is a schematic diagram of the drive assembly structure of an air compressor head air inlet device according to the present invention. Figure 1 ;

[0038] Figure 10 This is a schematic diagram of the drive assembly structure of an air compressor head air inlet device according to the present invention. Figure 2 ;

[0039] Figure 11 This is a flowchart illustrating the steps of an air compressor head air inlet device according to the present invention.

[0040] In the diagram: 1. Base plate one; 2. Base plate two; 3. Placement seat one; 4. Placement seat two; 5. Fixed seat; 6. Fixed block; 7. Column; 8. Cylinder fixing plate; 9. Rotary shaft fixing plate; 10. Cylinder mounting plate; 11. L-shaped cylinder fixing bracket; 12. Cylinder; 13. Piston rod; 14. Y-type connector; 15. Rotary shaft support plate; 16. Rotating rod; 17. Silicone rubber gasket; 18. Top plate; 19. Cover plate; 20. Protective box; 21. Motor; 22. Auxiliary bevel gear; 23. Drive bevel gear; 24. Active bevel gear; 25. Transmission shaft; 26. Active sprocket; 27. Chain; 28. Driven sprocket; 29. ​​Rotating shaft; 30. Support seat; 31. Take-up roller; 32. Take-up groove; 33. Outer traction rope; 34. Inner traction rope; 35. Stroke seat. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1-11 This invention provides a technical solution for an air compressor head air receiving device, including a base plate 1, a base plate 2 mounted on the top of the base plate 1, a bracket mounted on the top of the base plate 2, a docking mechanism mounted on the bracket, a protective mechanism mounted on the top of the docking mechanism, a workpiece placement mechanism mounted on the top of the base plate 2 and located in front of the bracket, and an electrical control box located on the top of the base plate 1, the electrical control box containing a controller and a power supply, the controller being electrically connected to the cylinder 12 and the motor 21.

[0043] See Figure 6The workpiece placement mechanism includes a placement seat 3 and a placement seat 4, and a fixing seat 5, both located on the top of the base plate 2. Placement seats 3 and 4 are polyoxymethylene (POM) bases. The fixing seat 5 and placement seat 3 are located on opposite sides of placement seat 4. Each of placement seats 3 and 4 has a placement groove on its top that mates with the air compressor head. A fixing block 6 is bolted to the top of each of placement seats 4 and fixing seat 5, and the fixing block 6 is press-fitted to the air compressor head. Through the design of the workpiece placement mechanism, the air compressor head is placed snugly in the placement grooves on placement seats 3 and 4 during use. Then, the two fixing blocks 6 are bolted to placement seats 4 and fixing seat 5, respectively. The bottom ends of the two fixing blocks 6 press against the air compressor head, thus locking the air compressor head, placement seats 3 and 4 together, facilitating subsequent docking.

[0044] See Figure 7The bracket includes columns 7, which are fixed to the top of the base plate 2. A cylinder fixing plate 8 and a rotating shaft fixing plate 9 are respectively fixed between the two columns 7. The rotating shaft fixing plate 9 is located above the cylinder fixing plate 8. The docking mechanism includes a cylinder mounting plate 10 fixed to the cylinder fixing plate 8. The cylinder mounting plate 10 is installed at a 70° inclination angle to ensure that the cylinder 12 does not interfere with the L-shaped bracket when moving at its two extreme positions. (The two extreme positions are when the cylinder piston rod is at its maximum and minimum stroke; for example, if the cylinder stroke is 40mm, the two extreme positions correspond to the cylinder piston rod positions at 0mm and 40mm.) (m) An L-shaped cylinder fixing bracket 11 is mounted on the cylinder mounting plate 10. A cylinder 12 is rotatably connected to the L-shaped cylinder fixing bracket 11. The input air pressure of the cylinder 12 is 0.6 MPa. A piston rod 13 is provided at the output end of the cylinder 12. The end of the piston rod 13 is connected to a Y-type connector 14. The docking mechanism also includes a rotating shaft support plate 15 fixed on the rotating shaft fixing plate 9. The end of the rotating shaft support plate 15 is rotatably connected to the rotating rod 16 through an optical axis. A connecting end is provided in the middle of one side of the outer surface of the rotating rod 16. The Y-type connector 14 is rotatably connected to the connecting end through an optical axis. The interior of the rotating rod 16... An airflow channel is provided, with both ends extending to the outer surfaces of the rotating rod 17 on both sides. A silicone rubber gasket 17, 3mm thick, is installed at one end of the airflow channel. The silicone rubber gasket 17 is annular and matches the pagoda connector on the air compressor head. A threaded hole is provided at the opening of the other end of the airflow channel, which connects and fixes to an external air pipe connector, facilitating the connection of a self-locking quick connector for high-pressure pipes and allowing for easy replacement of tooling for different compressor heads. Through the design of the docking mechanism, after the workpiece placement mechanism locks and fixes the air compressor head, the cylinder is activated via the electrical control box. 12. Cylinder 12 pushes rotating rod 16 to rotate around the end of rotating shaft support plate 15, thereby rotating rotating rod 16 to a vertical position consistent with rotating shaft support plate 15. At this time, the silicone rubber gasket on the outer surface of rotating rod 16 is squeezed and connected to the pagoda joint on the air compressor head. While connecting the airflow channel inside rotating rod 16 with the pagoda joint on the air compressor head, it also has a sealing effect to ensure that there is no air leakage. In use, the compressed air generated by the air compressor head passes through the pagoda joint on its outer surface, silicone rubber gasket 17, airflow channel inside rotating rod 16, air pipe joint, high pressure pipe and finally enters the air tank.

[0045] See Figures 1-2 , Figures 9-10The protective mechanism includes a top plate 18 fixed to the top of the column 7. A cover plate 19 is hinged to each of the four sides of the bottom of the top plate 18. A protective box 20 is fixed at the center of the top of the top plate 18. A motor 21 is installed on the top of the protective box 20. A drive assembly is provided inside the protective box 20. The drive assembly includes an auxiliary bevel gear 22 rotatably connected to the bottom of the protective box 20 and a driving bevel gear 24 rotatably connected to the top of the protective box 20. The driving bevel gear 24 is fixedly connected to the bottom output end of the motor 21. Four driving bevel gears 23 mesh between the driving bevel gear 24 and the auxiliary bevel gear 22. A transmission shaft 25 is connected to the shaft end of each driving bevel gear 23. The other end of the transmission shaft 25 is connected to a driving sprocket 26. The driving sprocket 26 is connected to a driven sprocket 28 via a chain 27. A rotating shaft 29 is fixedly connected to the middle of the driven sprocket 28. A take-up roller 31 is also fixed on the rotating shaft 29. The take-up roller 31 has two sets of take-up grooves 32. An outer traction rope 33 and an inner traction rope 34 are respectively wound in the take-up grooves 32. The inner traction rope 34 and the outer traction rope 33 are wound in opposite directions. The movable end of the outer traction rope 33 passes through the outside of the protective box 20 and is connected and fixed to the outer surface of the cover plate 19. The end of the inner traction rope 34 moves through the bottom of the protective box 20 to the bottom of the top plate 18 and is connected and fixed to the inner surface of the cover plate 19. A stroke seat 35 is provided at each of the four ends of the top of the bottom plate 1. An electromagnet is provided on the outer side surface of the stroke seat 35. An adsorption block that cooperates with the electromagnet is provided on the outer surface of the cover plate 19. Several sets of support seats 30 that cooperate with the auxiliary bevel gear 22, the active bevel gear 24, the transmission shaft 25 and the rotating shaft 29 are also provided at the inner bottom of the protective box 20.When the equipment is not in use, the cover plate 19 inside the protective mechanism will cover and protect the sides of the device. When the device is in use, the cover plate 19 inside the protective mechanism will rotate and open to facilitate the operation of the device. The operation process of the protective structure is as follows: the motor 21 drives the active bevel gear 24 to rotate, the active bevel gear 24 drives several driving bevel gears 23 to rotate, and the driving bevel gears 23 simultaneously drive the auxiliary bevel gear 22 at the bottom to rotate. Thus, a stable rotational transmission structure is formed by the auxiliary bevel gear 22, the driving bevel gear 23 and the active bevel gear 24. While the driving bevel gear 23 is rotating, it drives the active sprocket 26 to rotate through the transmission shaft 25. The active sprocket 26 drives the driven sprocket 28 to rotate through the material strip 27. While the driven sprocket 28 is rotating, it drives the take-up roller 31 through the rotating shaft 29. When the take-up roller 31 rotates clockwise, the two take-up slots 32 on the take-up roller 31 will respectively perform the actions of taking up the outer traction rope 33 and extending the inner traction rope 34. This, in turn, pulls the cover plate 19 from the bottom of the top plate 18 through the pulling of the outer traction rope 33, and the extension of the inner traction rope 34 satisfies the rotational opening action of the cover plate 19. When the take-up roller 31 rotates counterclockwise, the two take-up slots 32 on the take-up roller 31 will respectively perform the actions of extending the outer traction rope 33 and taking up the inner traction rope 34. This, in turn, stretches the inner traction rope 34, pulling the rotated and opened cover plate 19 back to its initial position. This causes the bottom of the cover plate 19 to abut against the travel seat 35 on the top of the bottom plate 1, pulled by the outer traction rope 33. The electromagnet on the outer surface of the travel seat 35 is electromagnetically attracted to the adsorption block on the inner outer surface of the cover plate 19.

[0046] This invention addresses the limitation of pagoda connectors being unable to be screwed on by transforming the screwing connection into a clamping connection. It utilizes a cylinder for power and designs a transmission structure adapted to the shape of the compressor head, thereby enabling rapid testing of compressor heads using pagoda connectors on the production line. This provides a new solution for testing air compressor head air connection devices for non-threaded connector compressor heads.

[0047] In practical use, the air compressor head is placed in the placement grooves on placement seat 3 and placement seat 4. Then, two fixing blocks 6 are fixed to placement seat 4 and fixing seat 5 respectively with bolts. The bottom ends of the two fixing blocks 6 press against the air compressor head, thereby locking the air compressor head, placement seat 3 and placement seat 4 together. Then, the cylinder 12 is started through the electrical control box. The cylinder 12 pushes the rotating rod 16 to rotate around the end of the rotating shaft support plate 15, thereby rotating the rotating rod 16 to a vertical position consistent with the rotating shaft support plate 15. At this time, the silicone rubber gasket on the outer surface of the rotating rod 16 is pressed and connected with the pagoda joint on the air compressor head, thereby achieving a sealing effect and ensuring that there is no air leakage.

[0048] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An air compressor head inlet device, characterized in that, Includes a base plate one (1), a base plate two (2) is installed on the top of the base plate one (1), a bracket is installed on the top of the base plate two (2), a docking mechanism is installed on the bracket, a protective mechanism is installed on the top of the docking mechanism, and a workpiece placement mechanism is installed on the top of the base plate two (2) and in front of the bracket.

2. The air compressor head inlet device according to claim 1, characterized in that, The workpiece placement mechanism includes a placement seat 1 (3) and a placement seat 2 (4) set on the top of the base plate 2 (2) and a fixing seat (5). The fixing seat (5) and the placement seat 1 (3) are respectively located on both sides of the placement seat 2 (4). The top of the placement seat 1 (3) and the placement seat 2 (4) are respectively provided with placement grooves that cooperate with the air compressor head. The top of the placement seat 2 (4) and the fixing seat (5) are respectively bolted with a fixing block (6). The fixing block (6) is press-fitted to the air compressor head.

3. The air compressor head inlet device according to claim 2, characterized in that, The bracket includes a column (7) which is fixed to the top of the base plate (2). A cylinder fixing plate (8) and a rotating shaft fixing plate (9) are fixed between the two columns (7) respectively. The rotating shaft fixing plate (9) is located above the cylinder fixing plate (8).

4. The air compressor head inlet device according to claim 3, characterized in that, The docking mechanism includes a cylinder mounting plate (10) fixed on the cylinder mounting plate (8), an L-shaped cylinder fixing bracket (11) is mounted on the cylinder mounting plate (10), a cylinder (12) is rotatably connected to the L-shaped cylinder fixing bracket (11), a piston rod (13) is provided at the output end of the cylinder (12), and the end of the piston rod (13) is connected to a Y-type connector (14).

5. The air compressor head inlet device according to claim 4, characterized in that, The docking mechanism also includes a rotating shaft support plate (15) fixed on the rotating shaft fixing plate (9). The end of the rotating shaft support plate (15) is rotatably connected to the rotating rod (16) via an optical axis. A connecting end is provided in the middle of one side of the outer surface of the rotating rod (16). The Y-type connector (14) is rotatably connected to the connecting end via an optical axis.

6. The air compressor head inlet device according to claim 5, characterized in that, The rotating rod (16) has an airflow channel inside. The two ends of the airflow channel extend to the outer surfaces of both sides of the rotating rod (17). A silicone rubber gasket (17) is installed at one end of the airflow channel. The silicone rubber gasket (17) has a circular structure and is compatible with the pagoda connector on the air compressor head. A threaded hole is provided at the opening of the other end of the airflow channel. The threaded hole is connected and fixed to the external air pipe connector.

7. An air compressor head air inlet device according to claim 6, characterized in that, The protective mechanism includes a top plate (18) fixed to the top of the column (7), a cover plate (19) is hinged to the four sides of the bottom of the top plate (18), a protective box (20) is fixed at the top center of the top of the top plate (18), a motor (21) is installed on the top of the protective box (20), and a drive assembly is provided inside the protective box (20).

8. The air compressor head inlet device according to claim 7, characterized in that, The drive assembly includes an auxiliary bevel gear (22) rotatably connected to the bottom of the protective box (20) and an active bevel gear (24) rotatably connected to the top of the protective box (20). The active bevel gear (24) is fixedly connected to the bottom output end of the motor (21). The active bevel gear (24) and the auxiliary bevel gear (22) are meshed with each other by four drive bevel gears (23). The shaft end of the drive bevel gear (23) is connected to a transmission shaft (25). The other end of the transmission shaft (25) is connected to an active sprocket (26). The active sprocket (26) is connected to a driven sprocket (28) via a chain (27). The middle part of the driven sprocket (28) is fixedly connected to a rotating shaft (29).

9. An air compressor head inlet device according to claim 8, characterized in that, A take-up roller (31) is also fixed on the rotating shaft (29). Two sets of take-up grooves (32) are provided on the take-up roller (31). An outer traction rope (33) and an inner traction rope (34) are respectively wound in the take-up grooves (32). The inner traction rope (34) and the outer traction rope (33) are wound in opposite directions. The ends of the outer traction rope (33) and the inner traction rope (34) respectively extend to the top and bottom of the protective box (20). The end of the outer traction rope (33) is connected and fixed to the outer surface of the cover plate (19) from top to bottom. The end of the inner traction rope (34) is connected and fixed to the inner surface of the cover plate (19) from top to bottom. A travel seat (35) is provided at each of the four ends of the top of the bottom plate (1). An electromagnet is provided on the outer side surface of the travel seat (35). An adsorption block that cooperates with the electromagnet is provided on the outer surface of the cover plate (19).

10. An air compressor head inlet device according to claim 9, characterized in that, The inner bottom of the protective box (20) is also provided with several sets of support seats (30) that cooperate with the auxiliary bevel gear (22), the active bevel gear (24), the transmission shaft (25) and the rotating shaft (29).

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