Transformer oil filling machine

Abstract

The utility model discloses a transformer oil filling machine relates to transformer oil filling machine technical field. The utility model discloses a machine body still includes support rod, T shaped base, fills oil gun, fills oil pipe, oil pipe, anti -dripping assembly, drive part and butt -joint subassembly, and support rod sets up at one side of machine body, and T shaped base fixed mounting is at the bottom of support rod, and T shaped base sets up in inverting, and the top of T shaped base is close to one -end and is equipped with round hole, and fills oil pipe fixed mounting at the bottom of fills oil gun, and oil pipe sets up between machine body and fills oil gun, and oil pipe is connected together with fills oil gun through butt -joint subassembly, and anti -dripping assembly sets up at the outside of fills oil pipe, and drive part sets up at the top of T shaped base close to the other end, can move together with fills oil pipe through setting up anti -dripping assembly, and can prevent oil liquid drop at fills oil gun export when oil liquid delivery ends in oil filling operation, avoid oil liquid waste and environmental pollution.

Description

Technical Field

[0001] This utility model relates to the technical field of transformer oil filling machines, and specifically to transformer oil filling machines. Background Technology

[0002] With the rapid development of the power industry and the continuous expansion of transformer production scale, increasingly stringent requirements have been placed on the operating efficiency, automation level and operation quality of transformer oil filling machines. Filling machines have become one of the indispensable core equipment in the transformer production process and are widely used in the oil filling process in various transformer manufacturing and maintenance scenarios.

[0003] In existing transformer oil filling operations, after the filling operation is completed, some oil that has not been completely discharged often remains in the conveying channel. Before the next filling operation begins, this residual oil is prone to dripping out through the output end under its own gravity. This not only contaminates the outer packaging of the oil storage tank, leading to increased subsequent cleaning procedures, but also contaminates the filling area of ​​the filling machine, affecting the cleanliness of the working environment. At the same time, the dripping oil cannot be properly injected into the oil storage tank, resulting in a direct waste of valuable oil and increasing production costs. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides a transformer oil filling machine that automatically seals the oil outlet after filling to prevent oil leakage, thus solving the problem of pollution and waste caused by residual oil leakage in existing filling machines.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution: a transformer oil filling machine, including a machine body, a support rod, a T-shaped base, an oil filling gun, an oil filling pipe, an oil delivery pipe, an anti-drip component, a drive unit, and a docking component. The support rod is disposed on one side of the machine body, the T-shaped base is fixedly installed at the bottom of the support rod, the T-shaped base is inverted, and a round hole is opened at the top of the T-shaped base near one end. The oil filling pipe is fixedly installed at the bottom of the oil filling gun, the oil delivery pipe is disposed between the machine body and the oil filling gun, the oil delivery pipe and the oil filling gun are connected together by the docking component, the anti-drip component is disposed on the outside of the oil filling pipe, and the drive unit is disposed at the top of the T-shaped base near the other end.

[0006] As a preferred embodiment of this utility model, the anti-drip component includes an installation cylinder, which is fixedly installed on the outside of the oil filling pipe. The bottom end of the installation cylinder is open. A slider is fixedly installed on the inner wall of the installation cylinder near the bottom end. A movable rod is movably installed inside the installation cylinder. An air pipe is fixedly installed on the outer side of the installation cylinder near the top end.

[0007] As a preferred technical solution of this utility model, the anti-drip component further includes a Z-shaped groove, which is opened on the outside of the movable rod and is arranged along the axial direction of the movable rod. The slider is movably sleeved inside the Z-shaped groove, and a sealing ring is fixedly installed on the outside of the movable rod near the top.

[0008] As a preferred embodiment of this utility model, the anti-drip assembly further includes an installation rod, which is fixedly installed at the bottom end of the movable rod. A conical sealing plug is fixedly installed at the top end of the installation rod near the oil filling pipe, and the conical sealing plug is used in conjunction with the oil filling gun.

[0009] As a preferred embodiment of the present invention, the driving unit includes an air cylinder, which is fixedly installed on the top of the T-shaped base near the other end. A piston is movably installed inside the air cylinder, and a spring is fixedly installed between the top of the piston and the inner top surface of the air cylinder. A push rod is fixedly installed at the bottom of the piston, and the other end of the air pipe is fixedly installed on the outer side of the air cylinder near the top.

[0010] As a preferred technical solution of this utility model, the docking assembly includes a connecting pipe, which is fixedly installed on the outside of the filling gun. A docking groove is provided at the other end of the connecting pipe, and a plurality of movable holes are provided at equal intervals along the circumference on the outer side of the connecting pipe near the other end. The movable holes are connected to the docking groove.

[0011] As a preferred technical solution of this utility model, the docking assembly further includes a rectangular insert rod, which is movably sleeved inside the movable hole. A round rod is fixedly installed on the side of the rectangular insert rod near the top. An adjusting ring is threaded to the outside of the connecting pipe. A plurality of arc-shaped holes are equidistantly opened on one side of the adjusting ring along the circumference. The round rod is movably sleeved inside the arc-shaped holes.

[0012] As a preferred technical solution of this utility model, the docking assembly further includes a docking ring, which is fixedly installed at one end of the oil supply pipe near the connecting pipe. The docking ring is movably installed inside the docking groove. A plurality of fixing holes are equidistantly opened on the outer side of the docking ring along the circumference. The bottom end of the rectangular insert is movably sleeved inside the fixing hole. A sealing ring is fixedly installed at one end of the oil supply pipe near the connecting pipe, and the sealing ring is disposed inside the docking ring.

[0013] The beneficial effects of this utility model are as follows: This invention effectively solves the problem of oil leakage after filling by using the anti-drip component and the drive unit in synergy. During the filling operation, the top rod is pressed and drives the piston to move upward. The gas in the air cylinder is introduced into the installation cylinder through the air pipe, pushing the movable rod to move downward along the installation cylinder. The Z-shaped groove and the slider cooperate to make the movable rod rotate synchronously, driving the conical sealing plug to disengage from the filling gun outlet, ensuring smooth oil flow. After filling is completed, the spring returns to its original position and pushes the piston downward. The air pressure in the installation cylinder decreases, the movable rod moves in the opposite direction and rotates, and the conical sealing plug accurately resets and seals the filling gun outlet.

[0014] During docking, the docking ring of the oil pipeline is inserted into the docking groove of the connecting pipe. Rotating the adjusting ring causes the arc-shaped hole to drive the round rod to move the rectangular insertion rod down, accurately inserting it into the fixing hole of the docking ring to complete the locking. The operation is simple and the connection is firm. The sealing ring inside the docking ring enhances the sealing performance of the connection and prevents oil leakage. At the same time, this structure is easy to disassemble and replace, reducing equipment maintenance costs and adapting to the usage needs under different working conditions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the transformer oil filling machine of this utility model; Figure 2 This is a side view of the transformer oil filling machine of this utility model; Figure 3 This is a schematic diagram of the support rod structure of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the drive unit of this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the anti-drip component of this utility model; Figure 6 This is a schematic diagram of the movable rod structure of this utility model; Figure 7 This is a schematic diagram of the oil pipeline structure of this utility model; Figure 8 This is a schematic diagram of the adjusting ring structure of this utility model; Figure 9 This is a schematic diagram of the connecting pipe structure of this utility model; Figure 10 This is a schematic diagram of the docking ring structure of this utility model.

[0016] Reference numerals: 1. Body; 2. Support rod; 3. T-shaped base; 4. Filling gun; 5. Filling pipe; 6. Air cylinder; 7. Piston; 8. Spring; 9. Push rod; 10. Mounting cylinder; 11. Slider; 12. Movable rod; 13. Z-groove; 14. Mounting rod; 15. Conical sealing plug; 16. Oil supply pipe; 17. Connecting pipe; 18. Docking groove; 19. Movable hole; 20. Rectangular insert rod; 21. Round rod; 22. Adjusting ring; 23. Arc-shaped hole; 24. Docking ring; 25. Fixing hole. Detailed Implementation

[0017] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0018] Figures 1-10 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figure 1 -Appendix Figure 10 The present invention will be further described below.

[0019] The transformer oil filling machine includes a body 1, a support rod 2, a T-shaped base 3, an oil filling gun 4, an oil filling pipe 5, an oil delivery pipe 16, an anti-drip assembly, a drive unit, and a docking assembly. The support rod 2 is located on one side of the body 1. The T-shaped base 3 is fixedly installed at the bottom of the support rod 2 and is inverted. A round hole is opened at the top of the T-shaped base 3 near one end. The oil filling pipe 5 is fixedly installed at the bottom of the oil filling gun 4. The oil delivery pipe 16 is located between the body 1 and the oil filling gun 4. The oil delivery pipe 16 and the oil filling gun 4 are connected together by the docking assembly. The anti-drip assembly is located on the outside of the oil filling pipe 5. The drive unit is located at the top of the T-shaped base 3 near the other end.

[0020] In this implementation plan, the machine body 1 serves as the core supporting foundation of the transformer oil filling machine, providing installation support points for components such as the support rod 2 and the oil delivery pipe 16. This ensures the orderly progress of the oil filling process and provides a basic framework support for subsequent oil transportation and filling operations. The support rod 2 connects the machine body 1 and the T-shaped base 3, providing positional support for the oil filling gun 4 and the oil filling pipe 5. The support rod 2 is also height-adjustable. The oil filling gun 4, as the direct actuator for oil output, has the oil filling pipe 5 fixedly installed at its bottom. It connects to the oil delivery pipe 16 via a docking assembly. After receiving the transformer oil delivered by the oil delivery pipe 16, it guides the oil to the oil filling pipe 5, which then injects it into the oil storage tank. During operation, the oil filling pipe 5 can be directly inserted into the tank opening to ensure accurate oil injection. The oil delivery pipe 16 is located between the machine body 1 and the oil filling gun 4. The core channel for transporting transformer oil from the machine body 1 to the filling gun 4 is located between the two parts. One end connects to the machine body 1 to obtain oil, and the other end connects to the filling gun 4 through the docking component, stably transporting oil to the filling gun 4 and continuously supplying oil to the filling gun 4. The anti-drip component is set on the outside of the filling pipe 5. It can move together with the filling pipe 5 during the oil filling operation. After the oil is transported, it can prevent oil from dripping at the outlet of the filling gun 4, avoiding oil waste and environmental pollution. By cooperating with the drive unit, it can quickly seal the outlet of the filling gun 4 after the oil filling is completed, ensuring that there is no oil residue leakage when the equipment is not in operation, improving the standardization of operation and the oil utilization rate. The docking component connects the oil supply pipe 16 and the filling gun 4, so that the two can be stably connected, ensuring that there is no leakage during the oil transportation process, and at the same time facilitating the disassembly and installation of the oil supply pipe 16 and the filling gun 4.

[0021] Specifically, the anti-drip assembly includes an installation cylinder 10, which is fixedly installed on the outside of the oil filling pipe 5. The bottom end of the installation cylinder 10 is open. A slider 11 is fixedly installed on the inner wall of the installation cylinder 10 near the bottom end. A movable rod 12 is movably installed inside the installation cylinder 10. An air pipe is fixedly installed on the outer side of the installation cylinder 10 near the top end. The anti-drip assembly also includes a Z-shaped groove 13, which is opened on the outside of the movable rod 12. The Z-shaped groove 13 is arranged along the axial direction of the movable rod 12. The slider 11 is movably sleeved inside the Z-shaped groove 13. A sealing ring is fixedly installed on the outside of the movable rod 12 near the top. The anti-drip assembly also includes a mounting rod 14, which is fixedly installed at the bottom of the movable rod 12. A conical sealing plug 15 is fixedly installed at the top of the end of the mounting rod 14 near the oil filling pipe 5. The conical sealing plug 15 is used in conjunction with the oil filling gun 4.

[0022] In this embodiment, by fixing the mounting cylinder 10 to the outside of the filling pipe 5, it can be inserted into the oil tank opening along with the filling pipe 5 during operation, providing a closed and stable movable cavity for the movable rod 12 of the anti-drip assembly. Its open bottom design facilitates the extension of the mounting rod 14 and the conical sealing plug 15 driven by the movable rod 12. The slider 11 is fixed to the inner wall of the mounting cylinder 10 near the bottom end and is movably sleeved inside the Z-shaped groove 13 of the movable rod 12. This limits the radial sway of the movable rod 12 within the mounting cylinder 10 and ensures the stable axial movement of the movable rod 12. On the one hand, through cooperation with the Z-shaped groove 13, the axial movement of the movable rod 12 is converted into synchronous rotation, enabling the movable rod 12 to drive the conical sealing plug 15 of the mounting rod 14 to rotate. This ensures that the conical sealing plug 15 is properly matched with or disengaged from the outlet of the filling gun 4. The Z-shaped groove 13 on the outer side of the movable rod 12 cooperates with the slider 11 to achieve directional movement and rotation. The sealing ring fixed on the outer side of the top end enhances the sealing with the inner wall of the mounting cylinder 10, preventing gas delivered by the gas pipe from leaking through the gap and ensuring that the gas pressure can effectively push the movable rod 12 downward. Meanwhile, the bottom end of the movable rod 12 is fixed to the mounting rod 14, which can transmit its own movement and rotation to the mounting rod 14, thereby driving the conical sealing plug 15 to complete the action of sealing or opening the oil filling gun 4 outlet. The air pipe is fixed to the outer side of the mounting cylinder 10 near the top, with one end connected to the inside of the mounting cylinder 10 and the other end connected to the air cylinder 6 in the drive unit, which can deliver the compressed gas generated by the air cylinder 6 in the drive unit to the mounting cylinder 10, providing downward moving force for the movable rod 12. The Z-shaped groove 13 is opened on its outer side along the axial direction of the movable rod 12, providing a special groove for the slider 11. The movement path of the trajectory, through its own Z-shaped structure, causes the movable rod 12 to move downward a certain distance, causing the conical sealing plug 15 to disengage from the oil outlet of the oil filling pipe 5. Then, as it continues to move downward, the movable rod 12 will rotate, preventing oil from adhering to the outer surface of the conical sealing plug 15 when oil is discharged from the oil filling pipe 5. The conical sealing plug 15 is used in conjunction with the outlet of the oil filling gun 4. The conical structure can be accurately embedded into the outlet of the oil filling gun 4, closely fitting the inner wall of the outlet, enhancing the sealing effect, preventing oil residue from dripping from the outlet of the oil filling gun 4, and avoiding oil waste and environmental pollution.

[0023] Specifically, the drive unit includes an air cylinder 6, which is fixedly installed on the top of the T-shaped base 3 near the other end. A piston 7 is movably installed inside the air cylinder 6. A spring 8 is fixedly installed between the top of the piston 7 and the inner top surface of the air cylinder 6. A push rod 9 is fixedly installed at the bottom of the piston 7. The other end of the air pipe is fixedly installed on the outer side of the air cylinder 6 near the top.

[0024] In this embodiment, by fixing the air cylinder 6 to the top of the T-shaped base 3 near the other end, the stable support provided by the T-shaped base 3 provides a closed and fixed installation and working cavity for the internal piston 7 and spring 8. At the same time, its outer side near the top is fixedly connected to the air pipe, which can deliver the internal compressed gas to the mounting cylinder 10 of the anti-drip component through the air pipe. The piston 7 is movably installed inside the air cylinder 6, and the bottom is fixedly installed with the top rod 9. The top is fixed between the top and the inner top surface of the air cylinder 6. When the top rod 9 is squeezed upward by the top surface of the oil tank, the piston 7 can move upward synchronously along the inner wall of the air cylinder 6, compressing the gas in the air cylinder 6 to generate pressure. At the same time, the spring 8 is compressed to store elastic potential energy. When the top rod 9 is not under force, the piston 7 moves downward under the action of the spring 8's restoring force.

[0025] Specifically, the docking assembly includes a connecting pipe 17, which is fixedly installed on the outside of the oil filling gun 4. A docking groove 18 is provided at the other end of the connecting pipe 17. Several movable holes 19 are provided at equal intervals along the circumference on the outer side of the connecting pipe 17 near the other end. The movable holes 19 are connected to the docking groove 18. The docking assembly also includes a rectangular insert 20, which is movably fitted inside the movable hole 19. A round rod 21 is fixedly installed on the side of the rectangular insert 20 near the top. An adjusting ring 22 is threaded to the outside of the connecting pipe 17. Several arc-shaped holes 23 are equidistantly opened on one side of the adjusting ring 22 along the circumference. The round rod 21 is movably fitted inside the arc-shaped holes 23. The docking assembly also includes a docking ring 24, which is fixedly installed at one end of the oil supply pipe 16 near the connecting pipe 17. The docking ring 24 is movably installed inside the docking groove 18. Several fixing holes 25 are equidistantly opened on the outer side of the docking ring 24 along the circumference. The bottom end of the rectangular insert 20 is movably sleeved inside the fixing hole 25. A sealing ring is fixedly installed at one end of the oil supply pipe 16 near the connecting pipe 17. The sealing ring is located inside the docking ring 24.

[0026] In this embodiment, the connecting pipe 17 is fixedly installed on the outside of the filling gun 4, with one end connected to the filling gun 4, providing a basic connecting component for the docking of the oil delivery pipe 16 and the filling gun 4. The connecting pipe 17 is located at the end away from the filling gun 4, providing precise insertion and positioning space for the docking ring 24 of the oil delivery pipe 16, ensuring that the docking ring 24 can be stably embedded inside the connecting pipe 17, keeping the oil delivery pipe 16 and the connecting pipe 17 coaxial, and preventing docking misalignment from affecting oil delivery. The movable hole 19 is equidistantly located on the outside of the connecting pipe 17 near the docking groove 18, and is connected to the docking groove 18, providing a channel for the rectangular insertion rod 20 to move up and down, allowing the rectangular insertion rod 20 to extend into the docking groove 18 through the movable hole 19. The fixing hole 25 of the docking ring 24 is locked, or it can be unlocked by being pulled out of the fixing hole 25. The rectangular insert rod 20 is movably sleeved inside the movable hole 19. The top side is fixed with a round rod 21, and the bottom end can extend into the docking groove 18. When the adjusting ring 22 rotates, the round rod 21 drives the rectangular insert rod 20 to move down along the movable hole 19, and the bottom end is inserted into the fixing hole 25 of the docking ring 24, firmly fixing the docking ring 24 in the docking groove 18, realizing a stable connection between the oil supply pipe 16 and the connecting pipe 17. When it moves up, the bottom end disengages from the fixing hole 25, making it easy to disassemble the oil supply pipe 16. The round rod 21 is fixedly installed on the side of the rectangular insert rod 20 near the top end, and is movably sleeved inside the arc-shaped hole 23 of the adjusting ring 22, which transmits the force of the adjusting ring 22. The function of the adjusting ring 22 is that when the adjusting ring 22 rotates, the inner wall of the arc-shaped hole 23 generates an axial thrust on the round rod 21, causing the round rod 21 to move up and down, thereby causing the rectangular insert rod 20 to move synchronously along the movable hole 19, realizing the locking and unlocking action of the rectangular insert rod 20. The adjusting ring 22 is threaded to the outside of the connecting pipe 17, and arc-shaped holes 23 are opened at equal intervals along the circumference on one side, providing a convenient operating component for the operator. By rotating the adjusting ring 22, it realizes its own axial movement by utilizing its threaded engagement with the connecting pipe 17. At the same time, the arc-shaped hole 23 pushes the round rod 21 to drive the rectangular insert rod 20 to move. The docking or disassembly of the oil supply pipe 16 and the oil filling gun 4 can be completed without complicated tools. The docking ring 24 is fixedly installed on the oil supply pipe 16 near the connecting pipe 19. One end of the 7 is movably installed in the docking groove 18 of the connecting pipe 17. A fixing hole 25 is opened on the outside. After being inserted into the docking groove 18, it is fixed by cooperating with the rectangular plug 20 through the fixing hole 25, so that the oil supply pipe 16 and the connecting pipe 17 are precisely connected, and the oil supply pipe 16 is prevented from shifting or falling off during the oil transportation process. The sealing ring is fixedly installed at the end of the oil supply pipe 16 near the connecting pipe 17 and is set inside the docking ring 24. When the docking ring 24 is inserted into the docking groove 18, the sealing ring tightly fits the inner wall of the connecting pipe 17 and the port of the oil supply pipe 16, sealing the gap at the joint between the two, preventing transformer oil from leaking from the joint gap during transportation, ensuring the sealing of the oil transportation, and avoiding oil waste and environmental pollution.

[0027] In summary: When using this utility model, first manually rotate the adjusting ring 22 of the docking assembly. The adjusting ring 22 pushes the round rod 21 through the arc-shaped hole 23, causing the rectangular insert rod 20 to move upward along the movable hole 19. Then, insert the docking ring 24 of the oil supply pipe 16 into the docking groove 18 of the connecting pipe 17. Next, manually rotate the adjusting ring 22 in the opposite direction to move the rectangular insert rod 20 downward and insert it into the fixing hole 25 of the docking ring 24, thus completing the fixed connection between the oil supply pipe 16 and the oil filling gun 4. The sealing ring inside the docking ring 24 can prevent oil from leaking out from the docking point. During operation, the oil filling pipe 5 and the installation cylinder 10 of the anti-drip component are simultaneously inserted into the inside of the oil storage tank opening. As the equipment moves downwards, the push rod 9 of the drive unit contacts the top surface of the oil storage tank and is compressed upwards. The push rod 9 drives the piston 7 to move upwards inside the air cylinder 6. The piston 7 compresses the gas inside the air cylinder 6 and the spring 8 at the top. The compressed gas is then transported through the air pipe to the installation cylinder 10, pushing the movable rod 12 downwards along the installation cylinder 10. At this time, the slider 11 on the inner wall of the installation cylinder 10 slides within the Z-shaped groove 13 of the movable rod 12. The Z-shaped groove 13 has its own structure. The movable rod 12 moves downward a certain distance, causing the mounting rod 14 and the conical sealing plug 15 to move downward synchronously, so that the conical sealing plug 15 is removed from the outlet of the oil filling gun 4. Then, as the movable rod 12 continues to move downward, it begins to rotate with the cooperation of the Z-shaped groove 13 and the slider 11, causing the mounting rod 14 and the conical sealing plug 15 to rotate together, preventing oil from adhering to the outer surface of the conical sealing plug 15 when oil comes out of the oil filling pipe 5. At this time, the transformer oil in the machine body 1 is transported to the oil filling gun 4 through the oil delivery pipe 16, and then through the oil filling pipe 5. After filling the oil tank, move the equipment upwards. The top rod 9 disengages from the top surface of the oil tank. The spring 8 returns to its original state and pushes the piston 7 downwards in the air cylinder 6. The air pressure in the air cylinder 6 decreases. The gas in the mounting cylinder 10 flows back to the air cylinder 6 through the air pipe. The movable rod 12 moves upwards under the action of air pressure. The slider 11 slides in the opposite direction in the Z-shaped groove 13. The movable rod 12 first rotates in the opposite direction and then moves upwards, driving the mounting rod 14 and the conical sealing plug 15 to reset. The conical sealing plug 15 is re-embedded into the outlet of the filling gun 4 to prevent oil leakage.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A transformer oil filling machine, comprising a machine body (1), characterized in that, It also includes a support rod (2), a T-shaped base (3), an oil filling gun (4), an oil filling pipe (5), an oil delivery pipe (16), an anti-drip assembly, a drive unit, and a docking assembly. The support rod (2) is located on one side of the body (1). The T-shaped base (3) is fixedly installed at the bottom of the support rod (2). The T-shaped base (3) is inverted. A round hole is opened at the top of the T-shaped base (3) near one end. The oil filling pipe (5) is fixedly installed at the bottom of the oil filling gun (4). The oil delivery pipe (16) is located between the body (1) and the oil filling gun (4). The oil delivery pipe (16) and the oil filling gun (4) are connected together by the docking assembly. The anti-drip assembly is located on the outside of the oil filling pipe (5). The drive unit is located at the top of the T-shaped base (3) near the other end.

2. The transformer oil filling machine according to claim 1, characterized in that, The anti-drip assembly includes an installation cylinder (10), which is fixedly installed on the outside of the oil filling pipe (5). The bottom end of the installation cylinder (10) is open. A slider (11) is fixedly installed on the inner wall of the installation cylinder (10) near the bottom end. A movable rod (12) is movably installed inside the installation cylinder (10). An air pipe is fixedly installed on the outer side of the installation cylinder (10) near the top end.

3. The transformer oil filling machine according to claim 2, characterized in that, The anti-drip assembly also includes a Z-shaped groove (13), which is opened on the outside of the movable rod (12). The Z-shaped groove (13) is arranged along the axial direction of the movable rod (12). The slider (11) is movably sleeved inside the Z-shaped groove (13). A sealing ring is fixedly installed on the outside of the movable rod (12) near the top.

4. The transformer oil filling machine according to claim 3, characterized in that, The anti-drip assembly also includes an installation rod (14), which is fixedly installed at the bottom end of the movable rod (12). A conical sealing plug (15) is fixedly installed at the top of the end of the installation rod (14) near the oil filling pipe (5). The conical sealing plug (15) is used in conjunction with the oil filling gun (4).

5. The transformer oil filling machine according to claim 4, characterized in that, The drive unit includes an air cylinder (6), which is fixedly installed on the top of the T-shaped base (3) near the other end. A piston (7) is movably installed inside the air cylinder (6). A spring (8) is fixedly installed between the top of the piston (7) and the inner top surface of the air cylinder (6). A push rod (9) is fixedly installed at the bottom of the piston (7). The other end of the air pipe is fixedly installed on the outer side of the air cylinder (6) near the top.

6. The transformer oil filling machine according to claim 1, characterized in that, The docking assembly includes a connecting pipe (17), which is fixedly installed on the outside of the oil filling gun (4). The other end of the connecting pipe (17) is provided with a docking groove (18). A plurality of movable holes (19) are provided at equal intervals along the circumference on the outer side of the connecting pipe (17) near the other end. The movable holes (19) are connected to the docking groove (18).

7. The transformer oil filling machine according to claim 6, characterized in that, The docking assembly also includes a rectangular insert (20), which is movably fitted inside the movable hole (19). A round rod (21) is fixedly installed on the side of the rectangular insert (20) near the top. An adjusting ring (22) is threaded to the outside of the connecting pipe (17). A plurality of arc-shaped holes (23) are equidistantly opened on one side of the adjusting ring (22) along the circumference. The round rod (21) is movably fitted inside the arc-shaped holes (23).

8. The transformer oil filling machine according to claim 7, characterized in that, The docking assembly also includes a docking ring (24), which is fixedly installed at one end of the oil pipe (16) near the connecting pipe (17). The docking ring (24) is movably installed inside the docking groove (18). A number of fixing holes (25) are equidistantly opened on the outer side of the docking ring (24) along the circumference. The bottom end of the rectangular insert (20) is movably sleeved inside the fixing holes (25). A sealing ring is fixedly installed at one end of the oil pipe (16) near the connecting pipe (17). The sealing ring is located inside the docking ring (24).

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