Lubricating oil replacement device and lubricating oil replacement platform

Abstract

The invention relates to a lubricating oil replacement device and a lubricating oil replacement platform, and relates to the technical field of lubrication. The lubricating oil replacement device comprises an oil recovery assembly and an oil filling assembly. The oil recovery assembly comprises a negative pressure suction part and a recovery container, the negative pressure suction part is used for generating negative pressure in the recovery container, and a recovery opening used for recovering waste lubricating oil is formed in the recovery container. The oil filling assembly comprises a variable-frequency filling part and a storage container, a filling opening used for filling new lubricating oil is formed in the storage container, and the variable-frequency filling part is used for pumping out the lubricating oil in the storage container from the filling opening. When the lubricating oil replacement device is used, waste lubricating oil in the speed reducer can be completely pumped out through negative pressure, new lubricating oil is filled after the waste lubricating oil is pumped out, the efficiency of the replacement process is high, the new lubricating oil does not make contact with the old lubricating oil, and therefore the situation that the new lubricating oil is polluted, and consequently performance disruption is caused is prevented.

Description

Technical Field

[0001] The present application relates to the field of lubrication technology, and in particular to a lubricating oil replacement device and a lubricating oil replacement platform. Background Art

[0002] In industrial production, speed reducers serve as core transmission equipment for transmitting power and regulating speed. Their stable operation is crucial to the efficiency and reliability of the entire production line. The lubricant within the speed reducer plays a key role in reducing friction and wear, dissipating heat and cooling, and preventing corrosion. The lubricant's condition, such as cleanliness, viscosity, and oil volume, directly determines the speed reducer's transmission efficiency, operating temperature, noise level, and ultimately its service life. Regular and standardized lubricant replacement and maintenance are fundamental to ensuring long-term, trouble-free operation of equipment and reducing the risk of unplanned downtime.

[0003] In the prior art, replacing reducer lubricant oil typically relies on manual labor, which can lead to issues like incomplete draining of old oil, inefficient oil changes, and a dirty, messy work environment. These issues not only lead to contamination of the new lubricant with residual old oil, compromising performance and increasing costs, but can also cause gear and bearing wear to accelerate due to poor lubrication, or overheating and seal damage due to inappropriate oil levels, ultimately leading to unplanned downtime of the reducer, resulting in significant production losses and repair costs. Summary of the Invention

[0004] In order to at least solve some of the defects mentioned in the related art, the present application provides a lubricating oil replacement device and a lubricating oil replacement platform.

[0005] In order to achieve the above-mentioned purpose, the present application provides a lubricating oil replacement device for replacing the lubricating oil in a reducer. The lubricating oil replacement device includes an oil recovery component and an oil filling component. The oil recovery component includes a negative pressure suction piece and a recovery container, the negative pressure suction piece is used to generate negative pressure in the recovery container, and the recovery container is provided with a recovery port for recovering waste lubricating oil. The oil filling component includes a frequency conversion filling piece and a storage container, the storage container is provided with a filling port for filling new lubricating oil, and the frequency conversion filling piece is used to pump the lubricating oil in the storage container out of the filling port.

[0006] Furthermore, the oil recovery assembly includes a heating recovery connector, and the recovery container is connected to the oil injection and discharge holes of the reducer through a delivery hose. The heating recovery connector is connected to the end of the delivery hose near the oil injection and discharge holes, and the heating recovery connector can be inserted into the oil injection and discharge holes.

[0007] Furthermore, the oil filling assembly includes a compressed air purge connector. The storage container is connected to the oil filling and discharge holes of the reducer via a delivery hose. The compressed air purge connector is connected to the end of the delivery hose near the oil filling and discharge holes to purge any remaining lubricating oil in the delivery hose to the outside of the delivery hose after filling.

[0008] The present application also provides a lubricating oil replacement platform, comprising a mobile platform and the lubricating oil replacement device described in any one of the above embodiments, wherein the lubricating oil replacement device is installed on the mobile platform; a power supply component is provided on the mobile platform to supply power to the lubricating oil replacement device.

[0009] Furthermore, the mobile platform is provided with a control assembly electrically connected to the power supply assembly. The control assembly includes a data processing module and an operating unit, the operating unit being located at an edge of the mobile platform. The operating unit is provided with a weight detection unit, which is data-connected to the data processing module. The data processing module is also electrically connected to the negative pressure suction unit, the variable frequency filling unit, and the mobile platform's drive unit.

[0010] Furthermore, the operating part is provided with an RFID reading component, and the data processing module is data-connected to the RFID reading component. The reducer is provided with an electronic tag, in which the equipment code and lubrication parameters are pre-stored, and the RFID reading component can read the electronic tag.

[0011] Furthermore, the mobile platform is provided with a tool rack, on which a variety of special tools are connected by magnetic attraction. The surface of the tool rack is also provided with an RFID reading component, and each of the special tools is provided with an electronic tag.

[0012] Furthermore, the mobile platform is provided with a pipe storage assembly, which includes a support frame and a winding motor, wherein the winding motor is used to drive the support frame to rotate. The support frame is provided with a winding portion, and the winding portion is provided with a guide groove, and the conveying hose can be wound around the winding portion along the guide groove.

[0013] Furthermore, the pipe storage assembly further comprises a back plate, the back plate being fixedly mounted on the mobile platform, the support frame being rotatably mounted at the center of the back plate, the winding motor being mounted on a side of the back plate away from the support frame, and the output shaft of the winding motor being connected to the support frame.

[0014] Furthermore, a modular tool cabinet is provided on the mobile platform; the power supply assembly, the lubricating oil changing device, and the pipeline storage assembly are all arranged in the modular tool cabinet; the modular tool cabinet is also provided with a storage space for storing tools and accessories used in the lubricating oil changing process.

[0015] With the above technical solution, when replacing the lubricating oil in the reducer, the oil filling and draining holes of the reducer are connected to the recovery port of the same recovery process. Then, the negative pressure suction component is used to create a negative pressure environment in the recovery container, thereby extracting the waste lubricating oil in the reducer. After the extraction is completed, the oil filling and draining holes of the reducer are disconnected from the recovery port, and the recovery port is sealed. Then, the oil filling and draining holes of the reducer are connected to the filling port of the storage container. The variable frequency filling component can pump the lubricating oil in the storage container into the reducer to complete the lubricating oil replacement of the reducer.

[0016] The lubricating oil replacement device of the present application, when in use, can completely extract the used lubricating oil in the reducer through negative pressure, and then refill it with new lubricating oil. This highly efficient replacement process prevents the new lubricating oil from coming into contact with the old lubricating oil, thus preventing contamination of the new lubricating oil and thus compromising performance. This also avoids problems such as accelerated wear of gears and bearings, equipment overheating, seal damage, and even damage to the reducer caused by poor lubrication. It is simple to operate and has strong stability.

[0017] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic structural diagram of a lubricating oil replacement platform provided in an embodiment of the present application from one perspective; Figure 2 A structural schematic diagram of the lubricating oil replacement platform provided in an embodiment of the present application from another perspective; Figure 3 A structural schematic diagram of the lubricating oil replacement platform provided in an embodiment of the present application from another perspective; Figure 4 A structural schematic diagram of a pipe storage assembly provided in an embodiment of the present application from one perspective.

[0020] icon: 100-Oil recovery assembly; 110-Negative pressure suction piece; 120-Recovery container; 130-Heating recovery connector; 200-Oil filling assembly; 210-Frequency conversion filling piece; 220-Storage container; 230-Compressed air purge connector; 300-Mobile platform; 310-Control assembly; 311-Operating unit; 312-Direction control assembly; 313-Start / stop control button; 320-RFID reading assembly; 330-Pipeline storage assembly; 331-Support frame; 332-Winding motor; 333-Back panel; 340-Tool rack; 350-Modular tool cabinet. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0023] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0024] This embodiment provides a lubricating oil replacement device to solve the problems in the related art that are easily encountered when replacing lubricating oil, such as incomplete discharge of old oil, low oil change efficiency, and a dirty working environment.

[0025] See also Figures 1 to 3For example, a lubricating oil replacement device is used to replace the lubricating oil in a reducer. The lubricating oil replacement device includes an oil recovery component 100 and an oil filling component 200. The oil recovery component 100 includes a negative pressure suction component 110 and a recovery container 120. The negative pressure suction component 110 is used to generate negative pressure in the recovery container 120. The recovery container 120 is provided with a recovery port for recovering waste lubricating oil. The oil filling component 200 includes a frequency conversion filling component 210 and a storage container 220. The storage container 220 is provided with a filling port for adding new lubricating oil. The frequency conversion filling component 210 is used to pump the lubricating oil in the storage container 220 out of the filling port.

[0026] Specifically, in this embodiment, when the lubricating oil of the reducer is replaced by the lubricating oil changing device, the oil filling and draining holes of the reducer are connected to the recovery port of the recovery container 120, and the negative pressure in the recovery container 120 is maintained by the negative pressure suction piece 110, so that the waste lubricating oil in the reducer can be sucked into the recovery container 120, until no more waste lubricating oil is extracted from the reducer while the recovery container 120 maintains a negative pressure, and the waste lubricating oil in the reducer has been completely extracted.

[0027] Disconnect the reducer's oil filling and drain holes from the recovery container 120 and connect them to the filling port of the storage container 220. The variable frequency filling unit 210 can pump new lubricating oil from the storage container 220 into the reducer. The variable frequency filling unit 210 can pump lubricating oil at a faster rate when the reducer is low on lubricating oil, and continue to pump lubricating oil at a slower rate when the reducer is nearly full, ensuring full filling and high filling efficiency. Once filling is complete, the reducer's oil filling and drain holes can be sealed.

[0028] The lubricating oil replacement device of this embodiment, when in use, can completely extract the waste lubricating oil in the reducer through the negative pressure suction piece 110, and after the extraction is completed, fill the reducer with new lubricating oil. During the replacement process, there will be no problem of incomplete discharge of waste lubricating oil and mixing with new lubricating oil in the reducer, resulting in insufficient lubricating oil performance in the reducer and accelerated wear of gears and bearings. Replacing lubricating oil by machine is more efficient, and there will be no leakage of lubricating oil during the replacement process, keeping the working environment clean and tidy. It can also avoid problems such as equipment overheating and seal damage caused by improper oil quantity, thereby ensuring the reliability of this embodiment.

[0029] It should be noted that after the waste lubricating oil is completely extracted, there will inevitably be a very small amount of residue on the inner wall of the reducer. This amount of residue is very small and will not affect the performance of the new lubricating oil. In addition, in this embodiment, the negative pressure suction part 110 and the frequency conversion filling part 210 can be set to any existing equipment according to actual needs, as long as they can meet the requirements of this embodiment. For example, the negative pressure suction part 110 can be set to a rotary vane vacuum pump, a diaphragm vacuum pump or a Venturi vacuum generator, etc. The frequency conversion filling part 210 can be set to a variable frequency controlled gear pump, a variable frequency screw pump or a variable frequency plunger pump, etc.

[0030] In one embodiment, for example, Figures 1 to 3 As shown, the oil recovery component 100 includes a heating recovery connector 130, and the recovery container 120 is connected to the oil filling and draining holes of the reducer through a delivery hose. The end of the delivery hose close to the oil filling and draining holes is connected to the heating recovery connector 130, and the heating recovery connector 130 can be inserted into the oil filling and draining holes. After the reducer is shut down after a long period of operation, the internal lubricating oil temperature is relatively high and the fluidity is good. However, if the shutdown time is long, the lubricating oil will cool and the viscosity will increase significantly, especially in winter or low temperature environments, its fluidity will deteriorate and it will be difficult to drain completely. The heating recovery connector 130 can heat the local oil after being inserted into the oil filling and draining holes, so that the temperature of the old oil near the oil drain port area increases and the viscosity decreases. Low-viscosity oil is more easily sucked by negative pressure, thereby speeding up the oil drainage speed, improving the oil drainage efficiency, and avoiding residues caused by oil hanging on the wall or stagnation.

[0031] Long-term lubricating oil often contains impurities such as metal abrasive particles, carbon deposits, and sludge. These impurities tend to settle at the bottom of the reducer or in blind spots in the oil passages. Heating can soften or partially dissolve these deposits, allowing them to flow into the suction system with the oil. Localized heating can also break down the sludge's adhesion structure, preventing it from clogging the oil drain port or delivery hose.

[0032] Traditional gravity drainage or conventional suction methods often struggle to completely drain lubricant from complex internal housing structures. The heated recovery connector 130 extends deep into the oil filling and drain holes, transferring the heat from the outlet inward, helping to propel viscous oil toward the outlet. Combined with negative pressure suction, this creates a synergistic oil drainage mechanism combining thermal drive and negative pressure traction, effectively reducing residual oil in dead corners.

[0033] In one embodiment, for example, Figures 1 to 3As shown, the oil filling assembly 200 includes a compressed air purge connector 230, and the storage container 220 is connected to the oil filling and discharge holes of the reducer through a delivery hose. One end of the delivery hose close to the oil filling and discharge holes is connected to a compressed air purge connector 230, which is used to blow the lubricating oil remaining in the delivery hose after the filling is completed to the outside of the delivery hose. Lubricating oil, especially high-performance synthetic oil, is relatively expensive, and tens of milliliters or even hundreds of milliliters of oil may remain inside the delivery hose. If this is not purged, this part of the oil will remain in the hose, and the next time it is used, it may be contaminated by the mixture of new and old oils or directly wasted. The compressed air purge connector 230 can blow the residual oil into the reducer or the collection container to achieve zero residual discharge of oil products.

[0034] If lubricant from an old batch or a different type remains in the hose, it may mix with the new oil during the next refill, causing degradation of the oil performance, such as viscosity changes, additive failure, compatibility issues, etc. Especially when changing to a different brand or type of lubricant, residual oil may cause chemical reactions or precipitation.

[0035] Please continue reading Figures 1 to 3 This embodiment also provides a lubricating oil changing platform, including a mobile platform 300 and a lubricating oil changing device in any one of the above embodiments, the lubricating oil changing device is installed on the mobile platform 300; a power supply component is provided on the mobile platform 300 to power the lubricating oil changing device. Reducers are usually distributed throughout the production line, even in high altitudes, underground or in confined areas. Traditional fixed oil changing equipment requires the equipment to be dismantled or the oil drums to be transported to the site, which is time-consuming and labor-intensive. The mobile platform 300 can be pushed to the side of any reducer, realizing "equipment looking for people" rather than "people looking for equipment." A mobile lubricating oil changing platform can complete oil changing operations for multiple reducers within one work shift. The operator only needs to push the cart to each equipment point in turn, connect the oil port, and start the automatic program.

[0036] The mobile platform 300 is equipped with a power supply module that can be optimized for practical use, such as a rechargeable lithium battery pack, a small generator, or a mains-to-DC power system. This provides power to the vacuum suction unit 110, the variable frequency filling unit 210, the heating connector, and the control system. This eliminates the need to search for outlets or lay temporary cables on-site, preventing interruptions to operations due to power outages.

[0037] In one embodiment, for example, Figures 1 to 3 As shown, a control assembly 310 is installed on the mobile platform 300 and is electrically connected to the power supply assembly. The control assembly 310 includes a data processing module and an operating unit 311. The operating unit 311 is located at the edge of the mobile platform 300 and includes a weight detection unit. The weight detection unit is data-connected to the data processing module. The data processing module is also electrically connected to the negative pressure suction unit 110, the variable frequency filling unit 210, and the drive unit of the mobile platform 300.

[0038] Control assembly 310, serving as the control center for the entire system, coordinates the operation of all components. The data processing module receives sensor signals, performs logical analysis, and controls the actuators. Operating unit 311, located at the edge of mobile platform 300, provides a standing operator interface and integrates a control interface. A weight detection unit detects whether a person is standing in the operating unit 311 area. Only when a person is detected will the mobile platform 300 drive unit be activated. The data processing module also monitors the filling, suction, and purging processes.

[0039] The mobile platform 300 may be carrying heavy equipment. If it moves unattended, it could easily collide with equipment, pipelines, personnel, or cause a fall. The weight detection unit senses in real time whether an operator is standing on the operating unit 311. Only when a person is detected is the drive system authorized to start. Once the person leaves, the system automatically cuts off the power or triggers the brakes, enhancing the safety of this embodiment.

[0040] In one embodiment, for example, Figures 1 to 3 As shown, the operating unit 311 is equipped with a direction control assembly 312 and a start / stop control button 313. The direction control assembly 312 controls the direction of travel of the mobile platform 300, while the start / stop control button 313 controls the movement or stopping of the mobile platform 300. When the operator pushes the platform to the target reducer position, there is no need to repeatedly get on and off the platform or make detours. Standing on the operating unit 311, holding the direction control lever with one hand and pressing the start / stop button with the other, the operator can start or stop the movement and fine-tune the position to align the oil filling and drain holes. This shortens positioning time and reduces physical exertion.

[0041] In one embodiment, for example, Figures 1 to 3 As shown, the operating part 311 is provided with an RFID reading component 320, and the data processing module is data-connected to the RFID reading component 320. An electronic tag is provided on the reducer, and the electronic tag pre-stores the equipment code and lubrication parameters. The RFID reading component 320 can read the electronic tag. The traditional method relies on paper ledgers or memories, which are prone to problems such as adding the wrong oil, inaccurate filling amount, forgetting to change the oil, or repeated oil change. In this embodiment, the reducer is automatically identified by the RFID reading component 320, and the system automatically matches the lubrication plan according to the pre-stored parameters. The frequency conversion filling part 210 automatically fills according to the set amount. There is no need for the operator to manually query the equipment file or input parameters. After approaching the equipment, the information is automatically read and the system is immediately ready. The operation is simpler and the accuracy of use is better.

[0042] Each oil change operation records information such as the equipment code, operation time, actual filling volume, oil extraction volume, and operation duration. This enables digital documentation of the entire lubrication maintenance process, providing data support for lifecycle management of equipment.

[0043] In one embodiment, for example, Figures 1 to 3 As shown, a tool hanger 340 is provided on the mobile platform 300, and a variety of special tools are connected to the tool hanger 340 through magnetic attraction. An RFID reading component 320 is also provided on the surface of the tool hanger 340, and each special tool is provided with an electronic tag. The tool hanger 340 and the magnetic connection are used to store special tools in an orderly manner, such as oil plug wrenches, sealing ring removers, heating connector adapters, purge connector converters, etc. The magnetic design enables quick access and firm fixation. The RFID reading component 320 is installed on the surface of the hanger and can automatically scan all tools in the area. The electronic tag is set at the tool end, and each tool has a built-in unique ID tag to store information such as tool number, type, calibration date, responsible person, usage record, etc. The data processing module receives the RFID reading results to realize tool status monitoring and logical control.

[0044] Before each oil change, the system automatically scans the rack to determine if all required tools are present. If a tool is missing or out of place, the system records the missing tool and alerts the operator. This prevents interruptions to operations due to missing critical tools and reduces the risk of tools being left behind or misplaced on site.

[0045] In one embodiment, for example, Figures 1 to 4 As shown, a pipe storage assembly 330 is installed on the mobile platform 300. The pipe storage assembly 330 includes a support frame 331 and a winding motor 332. The winding motor 332 is used to drive the support frame 331 to rotate. The support frame 331 is provided with a winding portion, which has a guide groove, along which the conveying hose can be wound around the winding portion. The operator does not need to manually wind the hose, which can be several meters or even more than ten meters long. After the oil change is completed, the operator or the data processing module can start the winding motor 332 to smoothly retract the hose, or automatically release the hose to the appropriate length when approaching the target equipment.

[0046] Manual reeling often results in hose tangles, kinks, and excessive bending. Long-term use can lead to inner layer rupture, outer layer wear, or reduced cross-sectional area, affecting flow. Guide grooves ensure the hose is wound in a single, orderly, and equidistant layer along the spiral path, avoiding interlayer compression and friction, maintaining a minimum bend radius, and preventing damage.

[0047] In one embodiment, for example, Figures 1 to 4As shown, the pipeline storage assembly 330 further comprises a back plate 333 fixedly installed on the mobile platform 300, and the support frame 331 is rotatably installed at the center of the back plate 333. The winding motor 332 is installed on the back plate 333 away from the side of the support frame 331, and the output shaft of the winding motor 332 is connected to the support frame 331. The back plate 333 serves as an overall support base, integrating the support frame 331, the motor, the bearing and other components on a rigid plane, effectively resisting torque deformation and vibration. The support frame 331 is installed in a central symmetric manner on the back plate 333, with stable center of gravity during rotation, avoiding eccentric shaking. The motor is coaxial or near-axial with the support frame 331, with short transmission path and reduced eccentric load.

[0048] On the front side, the support frame 331 and the winding part are exposed, facilitating the access and observation of the hose. On the back side, the winding motor 332 is hiddenly installed on the back of the back plate 333, without occupying the operation space. The operator can easily access the hose joint, avoiding the exposure of the motor or wire to be collided, contaminated by oil or stepped on by mistake, improving the overall appearance and the human-machine engineering experience.

[0049] In one embodiment, as shown in the drawings, Figures 1 to 3 As shown, the mobile platform 300 is provided with a modular tool cabinet 350; the power supply assembly, the lubricating oil replacement device and the pipeline storage assembly 330 are all arranged in the modular tool cabinet 350; the modular tool cabinet 350 is further provided with a storage space for storing tools and accessories used in the lubricating oil replacement process. The originally dispersed components are uniformly stored in a solid cabinet, forming a complete service unit that can be pushed and used. The appearance is neat and compact, avoiding the exposure of cables and components.

[0050] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0051] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A lubricating oil replacement device for replacing the lubricating oil in a reducer, characterized in that: The lubricating oil replacement device comprises: An oil recovery assembly (100), the oil recovery assembly (100) comprising a negative pressure suction piece (110) and a recovery container (120), the negative pressure suction piece (110) being used to generate negative pressure in the recovery container (120), and the recovery container (120) being provided with a recovery port for recovering waste lubricating oil; An oil filling assembly (200) comprises a variable frequency filling component (210) and a storage container (220), wherein the storage container (220) is provided with a filling port for filling new lubricating oil, and the variable frequency filling component (210) is used to pump the lubricating oil in the storage container (220) out of the filling port.

2. The lubricating oil replacement device according to claim 1, characterized in that: The oil recovery assembly (100) comprises a heating recovery joint (130), and the recovery container (120) is connected to the oil filling and discharge holes of the reducer through a delivery hose; One end of the delivery hose close to the oil injection and discharge hole is connected to the heating recovery joint (130), and the heating recovery joint (130) can be plugged into the oil injection and discharge hole.

3. The lubricating oil replacement device according to claim 1, characterized in that: The oil filling assembly (200) comprises a compressed air purge connector (230), and the storage container (220) is connected to the oil filling and discharge holes of the reducer via a delivery hose; One end of the delivery hose close to the oil filling and discharge hole is connected to the compressed air purge joint (230) for blowing the lubricating oil remaining in the delivery hose to the outside of the delivery hose after filling is completed.

4. A lubricating oil replacement platform, characterized in that: The invention comprises a mobile platform (300) and a lubricating oil changing device according to any one of claims 1 to 3, wherein the lubricating oil changing device is installed on the mobile platform (300); and a power supply component is provided on the mobile platform (300) for supplying power to the lubricating oil changing device.

5. The lubricating oil replacement platform according to claim 4, characterized in that: A control component (310) is provided on the mobile platform (300), and the control component (310) is electrically connected to the power supply component; The control component (310) includes a data processing module and an operating unit (311), wherein the operating unit (311) is arranged at an edge of the mobile platform (300), and the operating unit (311) is provided with a weight detection unit, and the weight detection unit is data-connected to the data processing module; The data processing module is also electrically connected to the negative pressure suction component (110), the variable frequency filling component (210), and the driving part of the mobile platform (300).

6. The lubricating oil replacement platform according to claim 5, characterized in that: The operating portion (311) is provided with an RFID reading component (320), and the data processing module is data-connected to the RFID reading component (320); The reducer is provided with an electronic tag, in which a device code and lubrication parameters are pre-stored, and the RFID reading component (320) is capable of reading the electronic tag.

7. The lubricating oil replacement platform according to claim 5, characterized in that: A tool rack (340) is provided on the mobile platform (300), and a variety of special tools are connected to the tool rack (340) through magnetic attraction; The surface of the tool hanger (340) is also provided with an RFID reading component (320), and each of the special tools is provided with an electronic tag.

8. The lubricating oil replacement platform according to claim 4, characterized in that: A pipeline storage assembly (330) is provided on the mobile platform (300), and the pipeline storage assembly (330) comprises a support frame (331) and a winding motor (332), and the winding motor (332) is used to drive the support frame (331) to rotate; The support frame (331) is provided with a winding portion, and a guide groove is provided on the winding portion. The delivery hose can be wound around the winding portion along the guide groove.

9. The lubricating oil replacement platform according to claim 8, characterized in that: The pipeline storage assembly (330) further includes a back plate (333), wherein the back plate (333) is fixedly mounted on the mobile platform (300), and the support frame (331) is rotatably mounted at the center of the back plate (333); The winding motor (332) is mounted on a side of the back plate (333) away from the support frame (331), and an output shaft of the winding motor (332) is connected to the support frame (331).

10. The lubricating oil changing platform according to any one of claims 4 to 9, characterized in that: A modular tool cabinet (350) is provided on the mobile platform (300); the power supply assembly, the lubricating oil replacement device, and the pipeline storage assembly (330) are all provided in the modular tool cabinet (350); The modular tool cabinet (350) is also provided with a storage space for storing tools and accessories used in the lubricating oil replacement process.

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