An automatic underground well charging system

Abstract

The present application relates to an automatic ground well charging system, belonging to the technical field of aviation ground wells. It includes a well ring arranged at the ground well opening and a well cover cooperating with the well ring. A main box body extending into a support frame is arranged at the bottom of the well cover, and the well cover is arranged on the top of the main box body. A cylinder for driving the movement of the main box body is arranged on the support frame. A protective cover is arranged between the well ring and the well cover. Both ends of the protective cover are fixedly and sealingly arranged on the well ring and the well cover respectively. When the protective cover protects the main box body, an installation hole is opened at the position corresponding to the output port of the main box body on the protective cover. The diameter of the installation hole is larger than the diameter of the output medium bearing section. An installation ring is arranged on the protective cover and within the installation hole. A flexible waterproof sleeve is arranged within the installation ring. The waterproof sleeve is frustum-shaped, and a rubber sleeve is arranged at the end of the waterproof sleeve. The diameter of the rubber sleeve is smaller than the diameter of the installation ring and is used for sleeving the output medium bearing section. The present application has the effect of extending the service life of the main box body.

Description

Technical Field

[0001] This application relates to the technical field of aviation ground wells, and in particular to an automatic ground well charging system. Background Art

[0002] An aviation ground well is one of the airport ground support equipment, mainly used to provide power, air conditioning, hydraulic pressure, etc. for aircraft.

[0003] Main functions: Power supply: Provide ground power for the aircraft through the ground well, reduce the use of APU (Auxiliary Power Unit, whose main purpose is to supply power without relying on ground equipment when the main engine is stopped), and reduce fuel consumption and noise. Air conditioning support: Connect to the ground air conditioning system to adjust the cabin temperature and reduce the APU load. Hydraulic support: Provide hydraulic power for ground operations of the aircraft, such as landing gear and brake system tests. Data transmission: Some ground wells support data transmission to facilitate communication between ground personnel and aircraft systems.

[0004] Application scenarios: Apron: Used when the aircraft is parked to provide necessary support. Maintenance area: Provide power and hydraulic support during maintenance and repair. Boarding gate: Provide power and air conditioning support when passengers board the aircraft.

[0005] Advantages: Environmental protection: Reduce the use of APU, reduce emissions and noise. Economy: Reduce fuel consumption and maintenance costs. Convenience: Centralized management, improve ground operation efficiency.

[0006] Currently, a patent document with the authorization announcement number CN218662406U discloses an automatic ground well charging system, including a well ring arranged at the ground well opening and a well cover cooperating with the well ring. A support frame is arranged at the bottom of the well ring, and a main box body extending into the support frame is arranged at the bottom of the well cover. The well cover is arranged on the top of the main box body, and a cylinder for driving the main box body to move up and down is arranged on the support frame.

[0007] However, when the main box body provides power, air conditioning, hydraulic pressure, etc. for the aircraft, the main box body is located outside the ground well, resulting in the main box body being exposed to the environment, thus making the main box body vulnerable to factors such as rainwater, and reducing the service life of the main box body. Summary of the Invention

[0008] To extend the service life of the main box body, this application provides an automatic ground well charging system.

[0009] An automatic ground well charging system provided by this application adopts the following technical solutions:

[0010] An automatic well charging system, comprising a well ring arranged at the wellhead of the well and a well cover cooperating with the well ring. A support frame is arranged at the bottom of the well ring, and a main box body extending into the support frame is arranged at the bottom of the well cover. The well cover is arranged on the top of the main box body. A cylinder for driving the main box body to move up and down is arranged on the support frame. A protective cover is arranged between the well ring and the well cover. Both ends of the protective cover are fixedly and sealingly arranged on the well ring and the well cover respectively. The protective cover is a bellows cover and rises with the well cover to protect the main box body. When the protective cover protects the main box body, an installation hole is opened at the position corresponding to the output port of the main box body. The diameter of the installation hole is larger than the diameter of the output medium bearing section. An installation ring is arranged on the protective cover and within the installation hole. A flexible waterproof sleeve is arranged within the installation ring. The waterproof sleeve is frustum-shaped, and a rubber sleeve is arranged at the end of the waterproof sleeve. The diameter of the rubber sleeve is smaller than the diameter of the installation ring and is used for sleeving the output medium bearing section.

[0011] Optionally, when the protective cover is in a retracted state, the waterproof sleeve is located within the protective cover. When the protective cover is in an extended state, the waterproof sleeve is located outside the protective cover. The charging system further includes an integrating member for adjusting the position of the waterproof sleeve to make the waterproof sleeve located outside or inside the protective cover.

[0012] Optionally, the integrating member includes an air pump arranged at the bottom of the main box body and a rubber pad arranged on the rubber sleeve. The air inlet end of the air pump is communicated with the inside of the well. The air outlet end of the air pump is located within the protective cover. The rubber pad is rotatably arranged on the outer end face of the rubber sleeve. The rubber pad rotates to cover the end face of the rubber sleeve to open and close the waterproof sleeve. When the main box body rises, the air pump extracts the air in the well and injects it into the protective cover, increasing the air pressure within the protective cover to press the waterproof sleeve out of the protective cover. When the main box body descends, the air pump extracts the air in the protective cover and injects it into the well, driving the waterproof sleeve into the protective cover.

[0013] Optionally, a suspension rod is arranged at the bottom of the well cover and outside the protective cover. One end of the suspension rod is hinged to the bottom of the well cover. A receiving groove for receiving the suspension rod is opened at the bottom of the well cover. A hook is slidably arranged on the suspension rod. The hook slides along the length direction of the suspension rod. After the output medium bearing section is connected to the main box body, the hook is used for hanging the output medium bearing section.

[0014] Optionally, the suspension rod includes a first rod body and a second rod body. Both the first rod body and the second rod body are provided with multiple pieces. The second rod body is used for connecting the first rod body. Ball heads are arranged at both ends of the second rod body. A spherical groove for inserting the ball head is opened at the end of the first rod body. The end of the first rod body is beveled so that the second rod body is perpendicular to the first rod body.

[0015] Optionally, an annular pipe is provided on the main box body and around the output port. An air outlet is provided on the annular pipe facing the direction of the protective cover. An air inlet pipe is provided on the annular pipe, and the air inlet pipe is communicated with the annular pipe. The air inlet pipe faces the air pump. After the air pump is started, part of the air injected into the protective cover enters the air inlet pipe and the annular pipe, and is ejected through the air outlet to move the waterproof cover out of the protective cover.

[0016] Optionally, a plurality of telescopic pipes are provided on the annular pipe. The telescopic pipes are of a telescopic structure. The telescopic pipes are hollow and are communicated with the air outlet. After the air injected into the protective cover enters the annular pipe, it drives the telescopic pipes to move forward and approach the waterproof sleeve to blow the waterproof sleeve out of the protective cover.

[0017] Optionally, a clamping rod is provided on the rubber pad. The clamping rod is located at the symmetric position of the rubber pad mounting shaft. A clamping groove for the clamping rod to be clamped is provided on the end face of the rubber sleeve. The clamping rod is a T-shaped rod.

[0018] Optionally, the length of the waterproof sleeve is greater than the folding width of the protective cover.

[0019] Optionally, the peripheral walls of the manhole cover are all inclined surfaces. The peripheral wall of the well opening on the well ring is an inclined surface that fits the inclined surfaces around the manhole cover. The suspension rod is hinged on the inclined surface of the manhole cover, and the suspension rod is also slidably arranged on the inclined surface of the manhole cover. The suspension rod slides along the length direction of the inclined surface of the manhole cover.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] When the aviation ground well provides power, air conditioning, hydraulic pressure, etc. for the aircraft, the air cylinder is started. The air cylinder pushes the main box body out of the ground well, docks the output medium bearing section with the output interface of the main box body, and provides corresponding support for the aircraft; when the main box body is moved out of the ground well, the protective cover is sleeved on the main box body as the main box body rises. When the main box body runs to the highest position, the mounting hole is directly opposite to the output interface of the main box body. At this time, the output medium receiving section is inserted into the protective cover through the mounting hole and connected to the corresponding output interface. After the output medium bearing section is inserted into the mounting hole, the waterproof sleeve is sleeved on the output medium bearing section. At the same time, the rubber sleeve is in a tightened state and tightened on the output medium bearing section, reducing the gap between the waterproof sleeve and the output medium bearing section, thereby reducing the possibility of rainwater entering the protective cover through the mounting hole, and thus reducing the possibility of damage to the main box body due to rainwater, etc.; at the same time, under the action of the protective cover, the whole main box body is protected, and the main box body is relatively separated from the environment, further reducing the possibility of damage to the main box body and extending the service life of the main box body;

[0022] The protective cover is a bellows cover and is in a folded shape, which is convenient for the storage of the protective cover and the elongation of the protective cover to sleeve the main box body. Brief Description of the Drawings

[0023] Figure 1 is a schematic diagram of the overall structure of an automatic underground well charging system according to an embodiment of the present application;

[0024] Figure 2 is a cross-sectional view of a protective cover in an automatic underground well charging system according to an embodiment of the present application;

[0025] Figure 3 is Figure 2 an enlarged schematic view of part A in

[0026] Figure 4 is Figure 2 an enlarged schematic view of part B in

[0027] Description of the reference numerals: 1, well ring; 2, well cover; 3, support frame; 4, main box body; 5, cylinder; 6, protective cover; 7, mounting hole; 8, mounting ring; 9, waterproof sleeve;

[0028] 10, integration part; 101, air pump; 102, rubber pad;

[0029] 11, annular pipe; 12, intake pipe; 13, telescopic pipe; 14, clamping rod; 15, clamping groove; 16, suspension rod; 161, first rod body; 162, second rod body; 163, ball head;

[0030] 17, storage groove; 18, hook; 19, rubber sleeve. Detailed Description of the Embodiment

[0031] The following further describes the present application in detail with reference to the attached Figure 1 - attached Figure 4 drawings.

[0032] An embodiment of the present application discloses an automatic underground well charging system. Referring to Figure 1 and Figure 2 , the automatic underground well charging system includes a well ring 1 arranged at the wellhead of the underground well and a well cover 2 cooperating with the well ring 1. A support frame 3 is arranged at the bottom of the well ring 1, and a main box body 4 extending into the support frame 3 is arranged at the bottom of the well cover 2. The well cover 2 is arranged on the top of the main box body 4, and a cylinder 5 for driving the main box body 4 to move up and down is arranged on the support frame 3; when the aviation underground well provides power, air conditioning, hydraulic pressure, etc. for the aircraft, the cylinder 5 is started, and the cylinder 5 pushes the main box body 4 out of the underground well, and the output medium carrying section is docked with the output interface of the main box body 4 to provide corresponding support for the aircraft.

[0033] Referring to Figure 2 and Figure 3, to extend the service life of the main box body 4, a protective cover 6 is provided between the well ring 1 and the well cover 2. The cross-section of the protective cover 6 is rectangular. The two ends of the protective cover 6 are respectively fixed and sealed on the well ring 1 and the well cover 2. The protective cover 6 is a bellows cover and rises with the well cover 2 to protect the main box body 4. When the protective cover 6 protects the main box body 4, an installation hole 7 is provided at the position corresponding to the output port of the main box body 4. The diameter of the installation hole 7 is larger than the diameter of the output medium bearing section. An installation ring 8 is provided on the protective cover 6 and within the installation hole 7. A flexible waterproof sleeve 9 is provided within the installation ring 8. The waterproof sleeve 9 has good elastic deformation and is made of plastic. The waterproof sleeve 9 is frustum-shaped. A rubber sleeve 19 is provided at the end of the waterproof sleeve 9. The diameter of the rubber sleeve 19 is smaller than the diameter of the installation ring 8 and is used to sleeve the output medium bearing section.

[0034] When the main box body 4 is removed from the ground well, the protective cover 6 sleeves the main box body 4 as the main box body 4 rises. When the main box body 4 runs to the highest position, the installation hole 7 is directly opposite to the output interface of the main box body 4. At this time, the output medium receiving section is inserted into the protective cover 6 through the installation hole 7 and connected to the corresponding output interface. After the output medium bearing section is inserted into the installation hole 7, the waterproof sleeve 9 sleeves on the output medium bearing section. At the same time, the rubber sleeve 19 is in a tightened state and tightened on the output medium bearing section, thereby reducing the gap between the waterproof sleeve 9 and the output medium bearing section, thus reducing the possibility of rainwater entering the protective cover 6 through the installation hole 7, and thus reducing the possibility of the main box body 4 being damaged by rainwater, etc.; at the same time, under the action of the protective cover 6, the whole of the main box body 4 is protected, and the main box body 4 is relatively separated from the environment, further reducing the possibility of the main box body 4 being damaged, and extending the service life of the main box body 4.

[0035] Refer to Figure 2 and Figure 3 , in the embodiment of the present application, when the protective cover 6 is in a retracted state, the waterproof sleeve 9 is located within the protective cover 6. When the protective cover 6 is in an extended state, the waterproof sleeve 9 is located outside the protective cover 6; when the protective cover 6 is folded and retracted, the waterproof sleeve 9 is located within the protective cover 6, and the waterproof sleeve 9 is press-connected within the protective cover 6, which is convenient for the retraction of the protective cover 6; when the protective cover 6 sleeves the main box body 4, the waterproof sleeve 9 is moved out of the protective cover 6. Under the action of gravity, the port of the waterproof sleeve 9 faces downward, making it difficult for rainwater to enter the protective cover 6 through the waterproof sleeve 9. At the same time, the waterproof sleeve 9 is located outside the protective cover 6, which is convenient for the output medium bearing section to be sleeved within the rubber sleeve 19 and the waterproof sleeve 9.

[0036] Refer to Figure 2 and Figure 3, in the embodiment of the present application, the charging system further includes an integrator 10. The integrator 10 is used to adjust the position of the waterproof sleeve 9 so that the waterproof sleeve 9 is located outside or inside the protective cover 6. The integrator 10 includes an air pump 101 provided at the bottom of the main box body 4 and a rubber pad 102 provided on the rubber sleeve 19. The air inlet end of the air pump 101 is communicated with the inside of the ground well, and the air outlet end of the air pump 101 is located inside the protective cover 6. The rubber pad 102 is rotatably arranged on the outer end face of the rubber sleeve 19, and the rubber pad 102 rotates to cover the end face of the rubber sleeve 19 to open and close the waterproof sleeve 9. When the main box body 4 rises, the air pump 101 extracts the air in the ground well and injects it into the protective cover 6, increasing the air pressure in the protective cover 6 and pressing the waterproof sleeve 9 out of the protective cover 6. When the main box body 4 descends, the air pump 101 extracts the air in the protective cover 6 and injects it into the ground well, driving the waterproof sleeve 9 into the protective cover 6; when the main box body 4 rises to the maximum stroke, the air pump 101 is started. The air pump 101 extracts the gas in the ground well, compresses it and injects it into the protective cover 6. The air pressure in the protective cover 6 increases, and the waterproof sleeve 9 is pressed out of the protective cover 6, facilitating the connection of cables, oil pipes or hydraulic pipes inside the waterproof sleeve 9; at the same time, under the action of the air pump 101, the waterproof sleeve 9 is in an inflated state and the waterproof sleeve 9 is in a horizontal state, further facilitating the installation of cables, oil pipes or hydraulic pipes; when the main box body 4 runs to the ground well, the air pump 101 is started to inject the gas in the protective cover 6 into the ground well, and the waterproof sleeve 9 enters the protective cover 6, facilitating the storage of the protective cover 6; at the same time, when the main box body 4 is working, the waterproof sleeve 9 that is not connected to the pipeline is opened, and the air pump 101 is started. The air pump 101 injects air into the protective cover 6 and acts on the main box body 4 to cool the main box body 4, facilitating the main box body 4 to be in the optimal temperature range and extending the working life of the main box body 4.

[0037] Referring to Figure 2 and Figure 4 , further, to facilitate the removal of the waterproof sleeve 9 from the protective cover 6 when the air pressure in the protective cover 6 increases, an annular pipe 11 is provided on the main box body 4 and around the output port. The annular pipe 11 is provided with air outlets facing the protective cover 6. There are a plurality of air outlets and they are evenly arranged along the circumferential direction of the annular pipe 11. The air outlets face the waterproof sleeve 9. An air inlet pipe 12 is provided on the annular pipe 11. The air inlet pipe 12 is communicated with the annular pipe 11. The air inlet pipe 12 faces the air pump 101. After the air pump 101 is started, part of the air injected into the protective cover 6 enters the air inlet pipe 12 and the annular pipe 11, and is ejected through the air outlets to move the waterproof cover out of the protective cover 6; when the air pump 101 injects air, part of the gas is injected into the annular pipe 11 through the air inlet pipe 12, and the gas is ejected from the air outlets and acts on the waterproof sleeve 9 to move the waterproof sleeve 9 out of the mounting hole 7.

[0038] Referring to Figure 2 and Figure 3, Further, a plurality of telescopic tubes 13 are provided on the annular tube 11. The telescopic tubes 13 are of a telescopic structure. The telescopic tubes 13 are hollow and communicate with the air outlet. The length direction and the sliding direction of the telescopic tubes 13 are parallel to the axis direction of the annular tube 11. After the air injected into the protective cover 6 enters the annular tube 11, it drives the telescopic tubes 13 to move forward and approach the waterproof sleeve 9, and blows the waterproof sleeve 9 out of the protective cover 6; when the gas in the annular tube 11 enters the telescopic tubes 13, part of the gas is discharged through the telescopic tubes 13, and the other part of the gas pushes the telescopic tubes 13 to move closer to the waterproof sleeve 9, which further facilitates the gas to push the waterproof sleeve 9 out of the protective cover 6.

[0039] Refer to Figure 2 and Figure 3 , When the air pressure in the protective cover 6 increases, in order to reduce the possibility of a gap appearing between the rubber pad 102 and the waterproof ring, a clamping rod 14 is provided on the rubber pad 102. The clamping rod 14 is located at the symmetry of the mounting shaft of the rubber pad 102. A clamping groove 15 for the clamping rod 14 to be clamped is formed in the end face of the rubber sleeve 19. The clamping rod 14 is a T-shaped rod; when the rubber pad 102 closes the port of the waterproof ring, the rubber pad 102 is rotated, and the rubber pad 102 drives the clamping rod 14 to be clamped in the clamping groove 15, thereby fixing the rubber pad 102 on the end face of the waterproof ring, which facilitates the rubber pad 102 to close the port of the waterproof ring.

[0040] Refer to Figure 2 , In order to reduce the influence of the waterproof sleeve 9 on the storage of the protective cover 6, the length of the waterproof sleeve 9 is greater than the folding width of the protective cover 6; when the waterproof sleeve 9 enters the protective cover 6, under the gravity of the rubber pad 102 and the waterproof ring, the end face of the waterproof sleeve 9 is located in front of the folding section of the protective cover 6. At this time, when the protective cover 6 is folded, the protective cover 6 presses the middle of the waterproof sleeve 9, thereby reducing the possibility of the waterproof sleeve 9 hindering the folding of the protective cover 6.

[0041] Refer to Figure 2 and Figure 3, when the pipeline or oil pipe is installed at the wiring port of the main box body 4, the pipeline and the oil pipe are crimped on the protective cover 6, applying a downward tensile force to the protective cover 6, which is likely to cause damage to the protective cover 6. Therefore, in the embodiment of the present application, a suspension rod 16 is provided at the bottom of the manhole cover 2 and outside the protective cover 6. One end of the suspension rod 16 is hinged to the bottom of the manhole cover 2. A storage groove 17 for storing the suspension rod 16 is provided at the bottom of the manhole cover 2. A hook 18 is slidably arranged on the suspension rod 16. The hook 18 slides along the length direction of the suspension rod 16. After the output medium carrying section is connected to the main box body 4, the hook 18 is used to hang the output medium carrying section; after the main box body 4 rises to the maximum stroke, the suspension rod 16 is removed from the storage groove 17 to make the suspension rod 16 in a free state, then the hook 18 is slid to the required position, and then the pipeline or oil pipe is hung on the hook 18, and then the pipeline or oil pipe is sleeved into the waterproof sleeve 9. Under the action of the hook 18, a tensile force is applied to the pipeline and the oil pipe, reducing the possibility of damage to the protective cover 6; at the same time, after the pipeline and the oil pipe are hung on the hook 18, it is convenient for the pipeline and the oil pipe to be sleeved into the waterproof sleeve 9.

[0042] Refer to Figure 2 and Figure 3 , in the embodiment of the present application, the suspension rod 16 includes a first rod body 161 and a second rod body 162. A plurality of first rod bodies 161 and second rod bodies 162 are provided. The second rod body 162 is used to connect the first rod body 161. Ball heads 163 are provided at both ends of the second rod body 162. A spherical groove for inserting the ball head 163 is provided at the end of the first rod body 161. The end of the first rod body 161 is beveled so that the second rod body 162 is perpendicular to the first rod body 161; under the action of the first rod body 161 and the second rod body 162, the length of the suspension rod 16 is extended as a whole, facilitating the suspension of pipelines and oil pipes with different installation heights; and under the action of the second rod body 162, it is convenient for the suspension rod 16 to be folded, facilitating the storage of the suspension rod 16 in the storage groove 17.

[0043] Refer to Figure 2 and Figure 3 , in the embodiment of the present application, the peripheral walls of the manhole cover 2 are all beveled surfaces, and the peripheral wall of the wellhead on the well ring 1 is a beveled surface that fits the peripheral beveled surfaces of the manhole cover 2. The suspension rod 16 is hinged to the beveled surface of the manhole cover 2; the suspension rod 16 is hinged to the beveled surface of the manhole cover 2, which is convenient for the first rod body 161 to be in an inclined state after being rotated out of the storage groove 17, so that the lower first rod body 161 is in a vertical state, thereby making the first rod body 161 away from the protective cover 6, and further increasing the distance between the hook 18 and the protective cover 6, thus facilitating the hook 18 to hang the pipeline or oil pipe.

[0044] Refer to Figure 2 and Figure 3, Further, the suspension rod 16 is also slidably arranged on the inclined surface of the manhole cover 2, and the suspension rod 16 slides along the length direction of the inclined surface of the manhole cover 2; two mounting rods are arranged on the suspension rod 16, and the two mounting rods are symmetrically arranged along the axis direction of the suspension rod 16, and a sliding groove is formed on the side wall of the storage groove 17, and the mounting rods are slidably arranged in the sliding groove; by sliding the first rod body 161, the position of the hanging hook 18 can be adjusted, so as to facilitate the hanging connection of pipelines or oil pipes.

[0045] The implementation principle of the automatic ground well charging system in the embodiment of the present application is as follows:

[0046] When the aviation ground well provides power, air conditioning, hydraulic pressure and other supports for the aircraft, the cylinder 5 is started, and the cylinder 5 pushes the main box body 4 out of the ground well, and the output medium bearing section is docked with the output interface of the main box body 4 to provide corresponding support for the aircraft;

[0047] When the main box body 4 is moved out of the ground well, the protective cover 6 sleeved on the main box body 4 as the main box body 4 rises. When the main box body 4 runs to the highest position, the mounting hole 7 is directly opposite to the output interface of the main box body 4. At this time, the output medium receiving section is inserted into the protective cover 6 from the mounting hole 7 and connected to the corresponding output interface. After the output medium bearing section is inserted into the mounting hole 7, the waterproof sleeve 9 is sleeved on the output medium bearing section. At the same time, the rubber sleeve 19 is in a tightened state and tightened on the output medium bearing section, thereby reducing the gap between the waterproof sleeve 9 and the output medium bearing section, thereby reducing the possibility of rainwater entering the protective cover 6 through the mounting hole 7, and thus reducing the possibility of damage to the main box body 4 due to rainwater and the like; at the same time, under the action of the protective cover 6, the whole of the main box body 4 is protected, and the main box body 4 is relatively separated from the environment, further reducing the possibility of damage to the main box body 4 and extending the service life of the main box body 4.

[0048] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automatic underground well charging system, comprising a well ring (1) arranged at an underground well mouth and a well cover (2) matched with the well ring (1), a support frame (3) being arranged at the bottom of the well ring (1), a main box (4) extending into the support frame (3) being arranged at the bottom of the well cover (2), the well cover (2) being arranged at the top of the main box (4), and a cylinder (5) for driving the main box (4) to move up and down being arranged on the support frame (3), characterized in that: A protective cover (6) is arranged between the well ring (1) and the well cover (2), and the two ends of the protective cover (6) are respectively fixed and sealed on the well ring (1) and the well cover (2). The protective cover (6) is an accordion cover and follows the well cover (2) to rise to protect the main box (4). When the protective cover (6) protects the main box (4), a mounting hole (7) is opened on the protective cover (6) at the output port corresponding to the main box (4), and the diameter of the mounting hole (7) is larger than the diameter of the output medium bearing section. A mounting ring (8) is arranged on the protective cover (6) and located in the mounting hole (7), and a flexible waterproof sleeve (9) is arranged in the mounting ring (8). The waterproof sleeve (9) is in a truncated cone shape. A rubber sleeve (19) is arranged at the end of the waterproof sleeve (9), and the diameter of the rubber sleeve (19) is smaller than the diameter of the mounting ring (8) and is used to sleeve the output medium bearing section. When the protective cover (6) is in a retracted state, the waterproof cover (9) is located inside the protective cover (6); when the protective cover (6) is in an extended state, the waterproof cover (9) is located outside the protective cover (6); the charging system further comprises an integration component (10); the integration component (10) is used to adjust the position of the waterproof cover (9) so that the waterproof cover (9) is located outside or inside the protective cover (6); The integration component (10) comprises an air pump (101) arranged at the bottom of the main box (4) and a rubber pad (102) arranged on the rubber sleeve (19); the air inlet end of the air pump (101) is connected to the inside of the ground well, and the air outlet end of the air pump (101) is located in the protective cover (6); the rubber pad (102) is rotatably arranged on the outer end surface of the rubber sleeve (19); the rubber pad (102) rotatably covers the end surface of the rubber sleeve (19) to open and close the waterproof sleeve (9); when the main box (4) rises, the air pump (101) extracts air from the ground well and injects it into the protective cover (6), so that the air pressure in the protective cover (6) increases and the waterproof sleeve (9) is pressed out of the protective cover (6); when the main box (4) descends, the air pump (101) extracts air from the protective cover (6) and injects it into the ground well, thereby driving the waterproof sleeve (9) to enter the protective cover (6).

2. The automatic underground well charging system according to claim 1, characterized in that: A hanging rod (16) is provided at the bottom of the manhole cover (2) and outside the protective cover (6); one end of the hanging rod (16) is hinged at the bottom of the manhole cover (2); a receiving groove (17) for receiving the hanging rod (16) is provided at the bottom of the manhole cover (2); a hook (18) is slidably provided on the hanging rod (16); the hook (18) slides along the length direction of the hanging rod (16); the hook (18) is used to hang the output medium bearing section after the output medium bearing section is connected to the main box (4).

3. The automatic underground well charging system according to claim 2, characterized in that: The suspension rod (16) comprises a first rod body (161) and a second rod body (162), wherein the first rod body (161) and the second rod body (162) are both provided with a plurality of rods, the second rod body (162) is used to connect the first rod body (161), both ends of the second rod body (162) are provided with ball heads (163), the ends of the first rod body (161) are provided with spherical grooves for inserting the ball heads (163), and the ends of the first rod body (161) are inclined so that the second rod body (162) is perpendicular to the first rod body (161).

4. The automatic underground well charging system according to claim 1, characterized in that: An annular tube (11) is arranged on the main box body (4) and around the output port, the annular tube (11) is provided with an air outlet facing the protective cover (6), an air inlet pipe (12) is arranged on the annular tube (11), the air inlet pipe (12) is connected with the annular tube (11), the air inlet pipe (12) faces the air pump (101), and after the air pump (101) is started, part of the air injected into the protective cover (6) enters the air inlet pipe (12) and the annular tube (11), and is ejected through the air outlet, so that the waterproof cover is removed from the protective cover (6).

5. The automatic underground well charging system according to claim 4, characterized in that: A plurality of telescopic tubes (13) are arranged on the annular tube (11). The telescopic tubes (13) are of a telescopic structure and are hollow. The telescopic tubes (13) are connected to an air outlet. After the air injected into the protective cover (6) enters the annular tube (11), the telescopic tubes (13) are driven to move forward and approach the waterproof cover (9), thereby blowing the waterproof cover (9) out of the protective cover (6).

6. The automatic underground well charging system according to claim 1, characterized in that: The rubber pad (102) is provided with a clamping rod (14), the clamping rod (14) is located at a symmetrical position of the installation axis of the rubber pad (102), and the end surface of the rubber sleeve (19) is provided with a clamping groove (15) for clamping the clamping rod (14), and the clamping rod (14) is a T-shaped rod.

7. The automatic underground well charging system according to claim 1, characterized in that: The length of the waterproof sleeve (9) is greater than the folded width of the protective cover (6).

8. The automatic underground well charging system according to claim 2, characterized in that: The surrounding walls of the manhole cover (2) are all inclined surfaces, the surrounding wall of the wellhead on the manhole ring (1) is an inclined surface that fits the surrounding inclined surfaces of the manhole cover (2), the hanging rod (16) is hinged on the inclined surface of the manhole cover (2), and the hanging rod (16) is also slidably arranged on the inclined surface of the manhole cover (2), and the hanging rod (16) slides along the length direction of the inclined surface of the manhole cover (2).

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