Maintenance tool for engine unit

Abstract

The utility model discloses an engine unit maintenance tool which comprises a moving trolley and a machine frame, the machine frame is arranged on the moving trolley, an oil well pump is installed on the moving trolley, the liquid inlet end of the oil well pump is connected with an oil guide pipe, a three-way control valve is arranged on the oil guide pipe, and the liquid discharging end of the oil well pump is communicated with an oil storage barrel. The utility model relates to the technical field of automobile engines, and adopts a combination mode of bottom suction and top gas injection to realize quick leading-out of engine oil in maintenance operation of an engine unit, an upper cover of an engine oil filling port of a gearbox of the engine unit is taken down, and the engine oil filling port of the gearbox of the engine unit is taken down. After one end of the hot air blowing assembly is connected with an engine oil injection port, the movable trolley is controlled to move the oil collecting hopper to the position below a gearbox oil drain valve, the lifting adjusting assembly is controlled to act while the oil drain valve is taken down, the oil collecting hopper is made to be tightly attached to a gearbox bottom shell, an oil well pump is started, and engine oil in a gearbox is rapidly pumped out.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engines, in particular to an engine group maintenance tool. Background Art

[0002] Replacing the engine oil is an important step in the maintenance of the engine group. The conventional replacement method is to lift the vehicle with a lift, then open the oil port, guide the waste oil to fall under the action of gravity and then recover it naturally. After recovery, the waste oil is stored and discharged into the waste oil barrel later. This oil replacement method cannot drain the residual oil in the engine well, resulting in incomplete oil replacement. At the same time, the recovered waste oil needs to be reintroduced into the waste oil barrel, which is more troublesome to operate. In addition, the engine oil can be sucked in the engine by cooperating with an external negative pressure pump, and the engine maintenance tool that directly discharges the oil into the waste oil barrel, but because the engine is in a stationary state during maintenance operations, especially in the winter in the north, the temperature is low, and the oil fluidity is poor at this time, and it is very easy to adhere to the inner wall of the casing. No matter which of the above methods is adopted, it is difficult to quickly export the oil, the maintenance operation efficiency is low, and the oil is not completely drained, and oil residue is likely to exist, which affects the use effect of the newly added oil. In view of this, in-depth research on the above issues has resulted in this case. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides an engine block maintenance tool, which solves the problems raised in the background technology.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: an engine group maintenance tool, comprising a mobile trolley and a frame, the frame is arranged on the mobile trolley, an oil pump is installed on the mobile trolley, a liquid inlet end of the oil pump is connected with an oil guide pipe, the oil guide pipe is provided with a three-way control valve, the discharge end of the oil pump is connected with the oil storage barrel, the frame top is provided with a lifting and lowering adjustment component, the upper end of the lifting and lowering adjustment component is provided with an annular seat, an oil collecting hopper is provided in the annular seat, a sealing ring is provided along the upper end of the oil collecting hopper, the lower end of the oil collecting hopper is connected with the three-way control valve through a transparent oil return pipe, a filter grid is provided in the oil collecting hopper, one end outlet of the three-way control valve is connected with an air guide pipe, and one end of the air guide pipe is connected with an oil-gas separator; a hot air purge component is provided on the side of the frame, and one end of the hot air purge component is connected to the oil injection port on the top of the gearbox.

[0005] The above-mentioned hot air blowing assembly includes a heating silo, in which a heating rod and a baffle plate are arranged, one end of the heating silo is connected to a compressed air storage tank through an air intake flow regulating valve, one side of the heating silo is connected to an air pressure sensor, the other end of the heating silo is connected to an air injection pipe, one end of the air injection pipe is provided with a sealing joint, the top of the sealing joint is connected to an air intake valve, and the air injection pipe is provided with a temperature sensor, an air injection flow regulating valve and a pressure gauge.

[0006] The above-mentioned lifting and adjusting assembly includes a cylinder, a guide member and a movable frame. The cylinder is arranged on the top of the frame in the vertical direction, the guide member is symmetrically arranged at the four corners of the frame, the movable frame is arranged on the telescopic end of the cylinder and is connected to the movable end of the guide member, and the movable frame is assembled and connected with the annular seat.

[0007] The guide member comprises a fixed sleeve and a guide rod, wherein the fixed sleeve is arranged on the frame, and the guide rod is slidably inserted in the fixed sleeve and connected to the movable frame.

[0008] The upper end surface of the annular seat is provided with a rectangular notch along the annular array, and a pressure sensor is installed at the notch position.

[0009] The above-mentioned sealing joint includes an injection head, a limiting pressure ring and a sealing ring. The injection head is fixed on one end of the injection pipe, the limiting pressure ring is rotatably mounted on the outside of the injection head, and the sealing ring is attached to the inner wall of the limiting pressure ring and attached to the injection head.

[0010] The utility model provides an engine maintenance tool. It has the following beneficial effects: the engine maintenance tool adopts a combination of bottom suction and top gas injection to realize the rapid extraction of engine oil in the engine maintenance operation, removes the upper cover of the engine gearbox oil filling port, connects one end of the hot air purge component to the oil injection port, and then uses a lifting device to lift the engine to a certain height, controls the mobile trolley to move the oil collecting bucket to the bottom of the gearbox oil drain valve, and while removing the oil drain valve, controls the lifting and adjusting component to make the oil collecting bucket close to the gearbox bottom shell, starts the oil pump, and quickly extracts the engine oil in the gearbox. After the oil extraction is completed, adjust the three-way control valve to connect the oil return pipe with the air guide pipe, and use the hot air purge component to inject hot air into the gearbox to increase the temperature in the gearbox, so that the oil fluidity is improved, and the wind flow drives the oil mist into the oil-gas separator under the help of hot air, so as to further enhance the oil discharge effect and reduce the oil residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a schematic diagram of the main structure of an engine unit maintenance tool.

[0012] Figure 2It is a partial enlarged structural schematic diagram of the frame part of the utility model.

[0013] Figure 3 It is a partial enlarged structural schematic diagram of the sealing joint position described in the utility model.

[0014] In the figure: 1. Mobile trolley; 2. Frame; 3. Oil pump; 4. Oil guide pipe; 5. Three-way control valve; 6. Oil storage barrel; 7. Ring seat; 8. Oil collecting hopper; 9. Sealing ring; 10. Oil return pipe; 11. Filter grid; 12. Air guide pipe; 13. Oil-gas separator; 14. Gearbox; 15. Heating silo; 16. Compressed air storage tank; 17. Air pressure sensor; 18. Air injection pipe; 19. Sealing joint; 20. Temperature sensor; 21. Air injection flow regulating valve; 22. Pressure gauge; 23. Cylinder; 24. Mobile frame; 25. Fixed sleeve; 26. Guide rod; 27. Pressure sensor; 28. Air injection head; 29. ​​Limiting pressure ring; 30. Sealing ring; 31. Inlet valve. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0017] Embodiment: In conjunction with the specification Figure 1-3It can be seen that in order to solve the problem that during the maintenance of the engine group in the prior art, the engine is in a stationary state, especially in the winter in the north, the temperature is low, the oil fluidity is poor, it is very easy to adhere to the inner wall of the casing, it is difficult to quickly drain the oil, resulting in low maintenance efficiency, and incomplete oil drainage, which is prone to oil residue, affecting the use effect of the newly added oil, this scheme specifically designs an engine group maintenance tool, a frame 2 is set on a mobile trolley 1, an oil pump 3 is installed on the mobile trolley 1, and the inlet of the oil pump 3 One end is connected with an oil guide pipe 4, on which a three-way control valve 5 is arranged, the discharge end of the oil pump 3 is connected with the oil storage barrel 6, a lifting and adjusting assembly is arranged on the top of the frame 2, an annular seat 7 is arranged on the upper end of the lifting and adjusting assembly, an oil collecting hopper 8 is arranged in the annular seat 7, a sealing ring 9 is arranged on the upper end of the oil collecting hopper 8, the lower end of the oil collecting hopper 8 is connected with the three-way control valve 5 through a transparent oil return pipe 10, a filtering grid 11 is arranged in the oil collecting hopper 8, one end outlet of the three-way control valve 5 is connected with an air guide pipe 12, one end of the air guide pipe 12 is connected There is an oil-gas separator 13; a hot air purge assembly is arranged on the side of the frame 2, one end of the hot air purge assembly is connected to the oil injection port on the top of the gearbox 14, and a combination of bottom suction and top gas injection is adopted to realize the rapid extraction of the oil in the maintenance operation of the engine group. The upper cover of the oil filling port of the engine group gearbox 14 is removed, and one end of the hot air purge assembly is connected to the oil injection port. Then, the engine group is lifted to a certain height by using a lifting device, and the mobile trolley 1 is controlled to move the oil collecting bucket 8 to the bottom of the oil drain valve of the gearbox 14. While removing the oil drain valve, control the action of the lifting and adjusting component so that the oil collecting bucket 8 is in close contact with the bottom shell of the gearbox 14, start the oil pump 3, and quickly extract the oil in the gearbox 14. After the oil extraction is completed, adjust the three-way control valve 5 so that the return oil pipe 10 is connected with the air guide pipe 12, and use the hot air blowing component to inject hot air into the gearbox 14 to increase the temperature in the gearbox 14, thereby improving the fluidity of the oil, and with the help of hot air, the wind flow drives the oil mist into the oil-gas separator 13, further enhancing the oil draining effect and reducing oil residue.

[0018] In the specific implementation process, as a preferred setting, the hot air blowing assembly includes a heating silo 15, a heating rod and a baffle are arranged in the heating silo 15, one end of the heating silo 15 is connected to the compressed air storage tank 16 through an air intake flow regulating valve, an air pressure sensor 17 is connected to one side of the heating silo 15, and an air injection pipe 18 is connected to the other end of the heating silo 15. A sealing joint 19 is arranged at one end of the air injection pipe 18, and an air intake valve 31 is connected to the top of the sealing joint 19. A temperature sensor 20, The gas injection flow regulating valve 21 and the pressure gauge 22, wherein the sealing joint 19 comprises a gas injection head 28, a limiting pressure ring 29 and a sealing ring 30, the gas injection head 28 is fixed on one end of the gas injection pipe 18, the limiting pressure ring 29 is rotatably sleeved on the outside of the gas injection head 28, the sealing ring 30 is attached to the inner wall surface of the limiting pressure ring 29 and is attached to the gas injection head 28, when in use, the gas injection head 28 is inserted into the oil filling port of the gearbox 14, and the limiting pressure ring 29 is tightened, and the sealing ring 30 is used to improve the sealing performance of the connection position of the gas injection head 28, and when the oil is pumped out, the sealing ring 30 is used to improve the sealing performance of the connection position of the gas injection head 28. During the operation, the air inlet valve 31 is kept open to avoid negative pressure in the gearbox 14 and ensure the efficiency of the oil extraction operation. When the hot air blowing operation is performed, the air inlet valve 31 is closed, the heating rod in the heating silo 15 is started, and air is injected into the heating silo 15 through the compressed air storage tank 16 to heat the air. The setting of the baffle plate can effectively extend the path length of the air flow and improve the heating efficiency. The heated air further enters the gearbox 14 through the air injection pipe 18 and the air injection head 28 under the action of wind pressure. The engine oil adhering to the inner wall of the casing is heated by hot air blowing. The heated engine oil is collected downward under the action of gravity and wind pressure, and further enters the oil-gas separator 13 through the oil return pipe 10, the three-way control valve 5 and the air guide pipe to recover the engine oil in the aerosol. The air injection pipe 18 is provided with a temperature sensor 20, an air injection flow regulating valve 21 and a pressure gauge 22, which can adjust the temperature, flow and pressure of the purge gas in real time to avoid damage to the seal of the gearbox 14 caused by excessive air pressure in the casing.

[0019] In the specific implementation process, as a preferred setting, the above-mentioned lifting and adjusting assembly includes a cylinder 23, a guide member and a mobile frame 24, the cylinder 23 is arranged on the top of the frame 2 in the vertical direction, the guide member is symmetrically arranged at the four corners of the frame 2, the mobile frame 24 is arranged on the telescopic end of the cylinder 23 and is connected to the movable end of the guide member, and the mobile frame 24 is assembled and connected with the annular seat 7, wherein the guide member includes a fixed sleeve 25 and a guide rod 26, the fixed sleeve 25 is arranged on the frame 2, the guide rod 26 is slidably inserted in the fixed sleeve 25 and is connected to the mobile frame 24, and the upper end surface of the above-mentioned annular seat 7 is provided with a rectangular array along the annular array. The notch is provided with a pressure sensor 27, which controls the movement of the mobile trolley 1 to the bottom of the oil drain valve of the gearbox 14. When the oil drain valve is removed, the telescopic end of the cylinder 23 is controlled to expand, thereby pushing the mobile frame 24 and the annular seat 7 to move upward under the limit support of the guide rod 26, and making the sealing ring 9 on the upper end of the oil collecting bucket 8 close to the bottom shell of the gearbox 14. When they are close, the pressure sensor 27 is pressurized and a pressure value appears. The value of the pressure sensor 27 can assist in judging the contact sealing effect between the oil collecting bucket 8 and the bottom shell, and then control the extension length of the cylinder 23, thereby improving the sealing performance of the contact position.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An engine maintenance tool, comprising a mobile trolley and a frame, characterized in that: The frame is arranged on a mobile trolley, an oil pump is installed on the mobile trolley, an inlet end of the oil pump is connected with an oil guide pipe, a three-way control valve is arranged on the oil guide pipe, a discharge end of the oil pump is connected with an oil storage barrel, a lifting and lowering adjustment component is arranged on the top of the frame, an annular seat is arranged on the upper end of the lifting and lowering adjustment component, an oil collecting hopper is arranged in the annular seat, a sealing ring is arranged along the upper end of the oil collecting hopper, the lower end of the oil collecting hopper is connected with the three-way control valve through a transparent oil return pipe, a filter grid is arranged in the oil collecting hopper, an outlet end of the three-way control valve is connected with an air guide pipe, and one end of the air guide pipe is connected with an oil-gas separator; a hot air purge component is arranged on the side of the frame, and one end of the hot air purge component is connected to the oil injection port on the top of the gearbox.

2. An engine maintenance tool according to claim 1, characterized in that: The hot air blowing assembly includes a heating silo, in which a heating rod and a baffle plate are arranged, one end of the heating silo is connected to a compressed air storage tank via an air intake flow regulating valve, one side of the heating silo is connected to an air pressure sensor, the other end of the heating silo is connected to an air injection pipe, one end of the air injection pipe is provided with a sealing joint, the top of the sealing joint is connected to an air intake valve, and the air injection pipe is provided with a temperature sensor, an air injection flow regulating valve and a pressure gauge.

3. An engine maintenance tool according to claim 1, characterized in that: The lifting and adjusting assembly includes a cylinder, a guide and a movable frame. The cylinder is arranged on the top of the frame in the vertical direction. The guide is symmetrically arranged at the four corners of the frame. The movable frame is arranged on the telescopic end of the cylinder and is connected to the movable end of the guide. The movable frame is assembled and connected to the annular seat.

4. An engine maintenance tool according to claim 3, characterized in that: The guide member comprises a fixed sleeve and a guide rod, wherein the fixed sleeve is arranged on the frame, and the guide rod is slidably inserted in the fixed sleeve and connected with the movable frame.

5. The engine maintenance tool according to claim 1, characterized in that: The upper end surface of the annular seat is provided with a rectangular notch along the annular array, and a pressure sensor is installed at the notch position.

6. An engine maintenance tool according to claim 2, characterized in that: The sealing joint includes an injection head, a limiting pressure ring and a sealing ring. The injection head is fixed on one end of the injection pipe, the limiting pressure ring is rotatably mounted on the outside of the injection head, and the sealing ring is attached to the inner wall of the limiting pressure ring and attached to the injection head.

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