Driven type steel wire rope oil stain cleaning, maintenance and waste oil recovery device for crane

Abstract

The invention relates to the technical field of hoisting equipment, in particular to a driven steel wire rope oil stain cleaning, maintenance and waste oil recovery device for a crane, which comprises a shell, and an oil stain cleaning module, a maintenance module and a waste oil recovery module which are arranged on the shell. In the steel wire rope winding operation process of hoisting equipment, lubricating grease extruded out of a steel wire rope under tension and oil stains, dust impurities and dirt on the surface of the steel wire rope can be scraped and cleaned, and the surface of the steel wire rope can be smeared with the lubricating grease; the waste oil recovery module is arranged to recover greasy dirt and lubricating grease scraped from the steel wire rope, accumulation of the greasy dirt and the lubricating grease on the surface of the steel wire rope is effectively avoided, equipment faults and personal injury risks caused by breakage of the steel wire rope are reduced, the service life of the steel wire rope is prolonged, and the manual maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting equipment, in particular to a driven steel wire rope oil cleaning, maintenance and waste oil recovery device for a crane. Background Art

[0002] With the rapid development of the port logistics industry, gantry cranes, as core equipment for port cargo handling, have a direct impact on port operations due to their safety and efficiency. The crane's wire rope, a key transmission component, is subject to long-term high loads and complex operating conditions. During actual use, the wire rope is prone to oil accumulation, leading to safety accidents such as pulley wear and rope breakage. Grease residue on the wire rope, mixed with dust, forms grease, which can exacerbate corrosion and shorten its service life. Furthermore, manual cleaning of the oil and grease on the wire rope increases maintenance costs. Summary of the Invention

[0003] The purpose of the present invention is to provide a driven wire rope oil cleaning, maintenance and waste oil recovery device for cranes to overcome the problems existing in existing equipment.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a driven wire rope oil cleaning, maintenance and waste oil recovery device for a crane, comprising a casing, an oil cleaning module arranged on the casing, a maintenance module and a waste oil recovery module, the oil cleaning module is used to scrape and clean the oil on the surface of the wire rope, and comprises a cleaning mechanism and a dynamic adjustment mechanism, the cleaning mechanism comprises two brush holders and a cleaning brush arranged on each brush holder, the two brush holders are opposite to each other and arranged around the wire rope, and the inner surface of each brush holder forms a cleaning brush; the dynamic adjustment mechanism comprises two brush driving members and two pressure sensors, each brush driving member is connected to one of the brush holders, and a pressure sensor is provided between each brush driving member and the corresponding brush holder, and the pressure sensor is used to detect the cleaning force of the cleaning brush; the maintenance module is arranged around the wire rope, and is used to apply grease to the wire rope; the waste oil recovery module is used to recover the oil and grease scraped from the wire rope.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows: As a further improvement of the above technical solution, the casing is a hollow shell structure composed of a top plate, a bottom plate and multiple side plates. The oil cleaning module and the maintenance module are arranged on the inner side of the casing, and the oil cleaning module is arranged directly below the maintenance module. A horizontal partition and a vertical partition are provided on the inner side of the casing. The vertical partition is fixed between the top plate and the bottom plate, and the horizontal partition is fixed between the side plate and the vertical partition. The top plate, bottom plate, horizontal partition, side plate and vertical partition are rectangular steel plates. The bottom plate, horizontal partition, side plate and vertical partition are arranged to form a first cavity, and the oil cleaning module is arranged in the first cavity; the top plate, horizontal partition, side plate and vertical partition are arranged to form a second cavity, and the maintenance module is arranged in the second cavity.

[0006] As a further improvement of the above technical solution, the top plate is provided with a plurality of upper through holes corresponding one-to-one to and adapted to the steel wire ropes of the lifting equipment, the cross partition is provided with a plurality of through holes corresponding one-to-one to the upper through holes and adapted to the steel wire ropes, and the bottom plate is provided with a plurality of lower through holes corresponding one-to-one to the through holes and adapted to the steel wire ropes, and the upper through holes, through holes and lower through holes are all threadedly connected with protective tubes, and the inner diameter of the protective tubes is adapted to the diameter of the steel wire ropes.

[0007] As a further improvement of the above technical solution, the driving end of the brush driving member is provided with a sleeve, the pressure sensor is arranged in the sleeve, and a connecting rod is provided on the outside of the brush holder, which is inserted into the sleeve and abuts the pressure sensor.

[0008] As a further improvement of the above technical solution, the brush drive and the pressure sensor are electrically connected to the controller, the controller is installed on the housing, the controller adopts a PLC controller, and the brush drive adopts an electric push rod.

[0009] As a further improvement of the above technical solution, the maintenance module includes a cylindrical maintenance box and an oiling tube arranged in the center of the maintenance box. The upper and lower ends of the oiling tube are open and respectively connected to the corresponding upper through hole and through hole. The upper and lower ends of the oiling tube pass through the maintenance box. A storage cavity for storing grease is formed between the inner wall of the maintenance box and the outer wall of the oiling tube. The lower end of the storage cavity is provided with a grease outlet connected to the inner cavity of the oiling tube, and the upper end of the storage cavity is provided with an extrusion mechanism.

[0010] As a further improvement of the above technical solution, the extrusion mechanism includes an electric telescopic rod and a piston connected to the electric telescopic rod. The electric telescopic rod is arranged on the inner wall of the upper end of the maintenance box and is used to press down the piston. The piston is interference fit with the inner wall of the storage chamber, and the electric telescopic rod is electrically connected to the controller.

[0011] As a further improvement of the above technical solution, the upper end of the inner cavity of the oil coating tube is configured as a tapered cavity with a gradually decreasing inner diameter, and the inner diameter of the open upper end of the tapered cavity is the same as the inner diameter of the protective tube.

[0012] As a further improvement of the above technical solution, the waste oil recovery module includes a recovery box and a suction pump. The recovery box is fixed to the outer wall of the casing by screws. The suction pump is arranged on the recovery box. The oil outlet end of the suction pump is connected to the recovery box through a pipe. The oil inlet end of the suction pump is connected to the recovery pipe, and the recovery pipe extends into the first cavity of the casing.

[0013] As a further improvement of the above technical solution, the inner surface of the brush holder is semicircular, and the bristles of the cleaning brush are made of PA material.

[0014] The beneficial effects of the present invention are as follows: by arranging an oil cleaning module and a maintenance module, the present invention can achieve the scraping and cleaning of the grease squeezed out of the wire rope under tension and the oil, dust, impurities and dirt on the surface of the wire rope during the wire rope winding operation of the lifting equipment, and can also apply grease to the surface of the wire rope; by arranging a dynamic adjustment mechanism, the cleaning brush can scrape and clean the oil on the surface of the wire rope while avoiding scratching the surface of the wire rope; by arranging a waste oil recovery module, the oil and grease scraped from the wire rope are recovered, thereby realizing an automated closed loop of wire rope oil cleaning, maintenance and waste oil recovery, effectively avoiding the accumulation of oil and lubricating grease on the surface of the wire rope, effectively reducing the risk of equipment failure and personal injury caused by wire rope breakage, improving the service life of the wire rope, and reducing the cost of manual maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and examples.

[0016] Figure 1 This is a schematic structural diagram of a driven wire rope oil cleaning, maintenance and waste oil recovery device for a crane provided by a preferred embodiment of the present invention; Figure 2 yes Figure 1 A top view of the oil cleaning module in FIG. Figure 3 yes Figure 1 Schematic diagram of the structure of the maintenance module; Figure 4 It is a usage state diagram of the present invention; In the figure: 10, housing; 11, top plate; 111, upper through hole; 12, bottom plate; 121, lower through hole; 13, side plate; 14, transverse partition; 141, through hole; 15, vertical partition; 16, protective tube; 20, oil cleaning module; 21, cleaning mechanism; 211, brush holder; 212, cleaning brush; 213, connecting rod; 22, dynamic adjustment mechanism; 221, brush drive member; 222, pressure sensor ; 223. Controller; 224. Casing; 30. Maintenance module; 31. Maintenance box; 32. Oiling pipe; 33. Storage chamber; 34. Grease outlet; 35. Extrusion mechanism; 351. Electric telescopic rod; 352. Piston; 40. Waste oil recovery module; 41. Recovery box; 42. Suction pump; 43. Recovery pipe; 51. Beam; 52. Support arm; 53. Trolley; 54. Fixed rod; 55. Wire rope. DETAILED DESCRIPTION

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0019] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0020] like Figures 1 to 4As shown, a preferred embodiment of the present invention provides a driven wire rope oil cleaning, maintenance, and waste oil recovery device for a crane, comprising a housing 10, an oil cleaning module 20 disposed on the housing 10, a maintenance module 30, and a waste oil recovery module 40. In this embodiment, the oil cleaning module 20 is disposed directly below the maintenance module 30.

[0021] The housing 10 is a hollow shell structure composed of a top plate 11, a bottom plate 12, and multiple side plates 13. The oil cleaning module 20 and the maintenance module 30 are located inside the housing 10. A transverse partition 14 and a vertical partition 15 are provided inside the housing 10. The vertical partition 15 is fixedly disposed between the top plate 11 and the bottom plate 12, and the transverse partition 14 is fixedly disposed between the side plates 13 and the vertical partition 15. The top plate 11, bottom plate 12, transverse partition 14, side plates 13, and vertical partitions 15 are rectangular steel plates. The bottom plate 12, transverse partition 14, side plates 13, and vertical partitions 15 enclose a first cavity, in which the oil cleaning module 20 is located. The top plate 11, transverse partition 14, side plates 13, and vertical partitions 15 enclose a second cavity, in which the maintenance module 30 is located.

[0022] The top plate 11 is provided with a plurality of upper through holes 111 corresponding to and adapted to the steel wire ropes 55 of the lifting equipment, the transverse partition 14 is provided with a plurality of through holes 141 corresponding to the upper through holes 111 and adapted to the steel wire ropes 55, and the bottom plate 12 is provided with a plurality of lower through holes 121 corresponding to the through holes 141 and adapted to the steel wire ropes 55. Figure 4 As shown, the lifting equipment includes a crossbeam 51, support arms 52 provided at both ends of the crossbeam 51, and a trolley 53 provided above the crossbeam 51. The housing 10 is provided below the crossbeam 51 and is fixedly connected to the trolley 53 via a fixing rod 54. A plurality of steel wire ropes 55 of the lifting equipment pass through the housing 10 through a plurality of corresponding upper through holes 111, through holes 141, and lower through holes 121. The steel wire ropes 55 are limited by the upper through holes 111, through holes 141, and lower through holes 121 so that the steel wire ropes 55 remain vertical when passing through the oil cleaning module 20 and the maintenance module 30, providing convenience for scraping and cleaning oil in the oil cleaning module 20 and applying grease to the maintenance module 30.

[0023] Furthermore, in order to prevent the steel wire rope 55 from wearing the upper through hole 111 , the through hole 141 and the lower through hole 121 , a protective tube 16 is threadedly connected to the upper through hole 111 , the through hole 141 and the lower through hole 121 , and the inner diameter of the protective tube 16 is adapted to the diameter of the steel wire rope 55 .

[0024] The oil cleaning module 20 is used to scrape and clean the oil on the surface of the wire rope 55, and includes a cleaning mechanism 21 and a dynamic adjustment mechanism 22. The cleaning mechanism 21 includes two brush holders 211 and a cleaning brush 212 arranged on each brush holder 211. The two brush holders 211 are opposite to each other and are arranged around the wire rope 55. The wire rope 55 is clamped between the two brush holders 211. The inner surface of each brush holder 211 is semicircular and forms a cleaning brush 212. The oil cleaning module 20 utilizes the fitting friction between the cleaning brush 212 and the wire rope 55 to achieve the driven movement of the cleaning brush 212 through the movement of the wire rope 55, thereby achieving the purpose of cleaning the oil on the wire rope 55; in addition, during the winding and rising process of the wire rope 55, the cleaning brush 212 can scrape and clean the grease squeezed out of the wire rope 55 by the tension and the dirt on the surface of the wire rope 55, effectively avoiding the generation of oil stains when the wire rope 55 is wound. Preferably, the bristles of the cleaning brush 212 are made of PA material, which has good heat resistance, wear resistance and chemical corrosion resistance.

[0025] The dynamic adjustment mechanism 22 is used to adaptively adjust the cleaning brush 212, so that the cleaning brush 212 can remove oil stains from the surface of the cleaning wire rope 55 while avoiding scratching the surface of the wire rope 55. The dynamic adjustment mechanism 22 includes two brush driving members 221 and two pressure sensors 222. Each brush driving member 221 is connected to one of the brush holders 211. A pressure sensor 222 is provided between each brush driving member 221 and the corresponding brush holder 211. The pressure sensor 222 is used to detect the cleaning force of the cleaning brush 212. The brush driving members 221 and the pressure sensors 222 are electrically connected to a controller 223, which is mounted on the housing 10. Specifically, one end of the brush drive 221 is connected and fixed to the inner wall of the housing 10, and the other end is the driving end. The driving end of the brush drive 221 is provided with a sleeve 224, and a pressure sensor 222 is disposed within the sleeve 224. A connecting rod 213 is disposed on the outside of the brush holder 211. The connecting rod 213 is inserted into the sleeve 224 and abuts the pressure sensor 222. The brush drive 221 can be provided with a displacement sensor for detecting the displacement of the driving end of the brush drive 221, thereby measuring the displacement of the cleaning brush 212. The displacement sensor is electrically connected to the controller 223. In this embodiment, the controller 223 is a PLC controller, and the brush drive 221 is an electric push rod. The two cleaning brushes 212 of the cleaning mechanism 21 approach the wire rope 55 respectively under the pushing force of the brush driving member 221, and press the wire rope 55 with a certain pressure. The pressure sensor 222 detects the reaction force applied by the wire rope 55 to the cleaning brush 212, and sends the detected force value (force value) to the controller 223. The controller 223 compares the detected force value with the set force value, and controls the brush driving member 221 accordingly to drive the cleaning brush 212 closer to or away from the wire rope 55, thereby adjusting the force of the cleaning brush 212 on the wire rope 55, and avoiding scratching the surface of the wire rope 55 while the cleaning brush 212 scrapes off the oil stains on the surface of the wire rope 55.

[0026] The maintenance module 30 is arranged around the wire rope 55 and is used to apply grease to the wire rope 55. The maintenance module 30 includes a cylindrical maintenance box 31 and an oiling tube 32 disposed in the center of the maintenance box 31. The upper and lower ends of the oiling tube 32 are both open and communicate with the corresponding upper through hole 111 and through hole 141, respectively. The upper and lower ends of the oiling tube 32 pass through the maintenance box 31. A storage chamber 33 for storing grease is formed between the inner wall of the maintenance box 31 and the outer wall of the oiling tube 32. The lower end of the storage chamber 33 is provided with a grease outlet 34 connected to the inner cavity of the oiling tube 32. The upper end of the storage chamber 33 is provided with an extrusion mechanism 35, which is used to squeeze the grease in the storage chamber 33 into the inner cavity of the oiling tube 32 through the grease outlet 34.

[0027] Specifically, the extrusion mechanism 35 includes an electric telescopic rod 351 and a piston 352 connected to the electric telescopic rod 351. The electric telescopic rod 351 is arranged on the inner wall of the upper end of the maintenance box 31 and is used to press down the piston 352. The piston 352 is interference fit with the inner wall of the storage chamber 33. The electric telescopic rod 351 is electrically connected to the controller 223.

[0028] Preferably, the upper end of the inner cavity of the oiling tube 32 is set as a conical cavity with a gradually decreasing inner diameter. The inner diameter of the open upper end of the conical cavity is the same as the inner diameter of the protective tube 16. The conical cavity can not only scrape off the excess grease adhering to the surface of the wire rope 55, but also make the grease more evenly applied. The scraped grease will be repeatedly applied and used as the wire rope 55 is wound up and raised, avoiding the waste of grease applied to the wire rope 55.

[0029] The waste oil recovery module 40 is used to recover oil and grease scraped from the wire rope 55 to prevent contamination of the surrounding environment. The waste oil recovery module 40 includes a recovery box 41 and a suction pump 42. The recovery box 41 is fixed to the outer wall of the housing 10 by screws. The suction pump 42 is mounted on the recovery box 41. The oil outlet of the suction pump 42 is connected to the recovery box 41 via a pipe. The oil inlet of the suction pump 42 is connected to a recovery pipe 43, which extends into the first cavity of the housing 10. The suction pump 42 is electrically connected to the controller 223.

[0030] like Figure 4 As shown, when the present invention is used, during the winding operation of the wire rope 55, the wire rope 55 enters the housing 10 and passes through the oil cleaning module 20 and the maintenance module 30 in sequence. During the process of the wire rope 55 winding and rising, the cleaning brush 212 removes the oil and grease on the surface of the wire rope 55, and the controller 223 controls the suction pump 42 to suck the oil and grease scraped from the wire rope 55 into the recovery box 41 for recovery. The pressure sensor 222 detects the cleaning force of the cleaning brush 212 so as to control the brush driving member 221 to drive the cleaning brush 212 close to or away from the wire rope 55, thereby adjusting the force of the cleaning brush 212 on the wire rope 55, and avoiding scratching the surface of the wire rope 55 while the cleaning brush 212 scrapes the oil on the surface of the wire rope 55. After the cleaning brush 212 removes the oil and grease on the surface of the wire rope 55, the staff sends a control command to the electric telescopic rod 351 on the operating table of the lifting equipment. The electric telescopic rod 351 pushes the piston 352 downward, and the grease in the storage chamber 33 is squeezed out from the grease outlet 34 to the inner cavity of the oil coating tube 32. As the wire rope 55 is wound up and rises, the grease adheres to the surface of the wire rope 55 to complete the grease coating.

[0031] The present invention provides an oil cleaning module 20 and a maintenance module 30, so that during the winding operation of the wire rope 55 of the lifting equipment, it is possible to scrape and clean the grease squeezed out of the wire rope 55 due to tension and the oil, dust, impurities and dirt on the surface of the wire rope 55, and apply grease to the surface of the wire rope 55; by providing a dynamic adjustment mechanism 22, the cleaning brush 212 scrapes and cleans the oil on the surface of the wire rope 55 while avoiding scratching the surface of the wire rope 55; by providing a waste oil recovery module 40, the oil and grease scraped from the wire rope 55 are recovered, thereby realizing an automated closed loop of oil cleaning, maintenance and waste oil recovery of the wire rope 55, effectively avoiding the accumulation of oil and lubricating grease on the surface of the wire rope 55, effectively reducing the risk of equipment failure and personal injury caused by the breakage of the wire rope 55, improving the service life of the wire rope 55, and reducing the cost of manual maintenance.

[0032] Any matters not mentioned in the above specific embodiments of the present invention belong to the common knowledge in this field and can be implemented with reference to the common knowledge.

[0033] The above description is based on the ideal embodiment of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the content of the specification and must be determined according to the scope of the claims.

Claims

1. A driven wire rope oil cleaning, maintenance and waste oil recovery device for cranes, characterized by: It includes a housing, an oil cleaning module arranged on the housing, a maintenance module and a waste oil recovery module. The oil cleaning module is used to scrape and clean the oil on the surface of the wire rope, and includes a cleaning mechanism and a dynamic adjustment mechanism. The cleaning mechanism includes two brush holders and a cleaning brush arranged on each brush holder. The two brush holders are opposite to each other and arranged around the wire rope. The inner surface of each brush holder forms a cleaning brush. The dynamic adjustment mechanism includes two brush driving members and two pressure sensors. Each brush driving member is connected to one of the brush holders. A pressure sensor is provided between each brush driving member and the corresponding brush holder. The pressure sensor is used to detect the cleaning force of the cleaning brush. The maintenance module is arranged around the wire rope and is used to apply grease to the wire rope; the waste oil recovery module is used to recover the oil and grease scraped from the wire rope.

2. The driven wire rope oil cleaning, maintenance and waste oil recovery device for cranes according to claim 1 is characterized in that: The casing is a hollow shell structure formed by splicing a top plate, a bottom plate and multiple side plates. The oil cleaning module and the maintenance module are arranged on the inner side of the casing, and the oil cleaning module is arranged directly below the maintenance module. A horizontal partition and a vertical partition are provided on the inner side of the casing. The vertical partition is fixedly arranged between the top plate and the bottom plate, and the horizontal partition is fixedly arranged between the side plate and the vertical partition. The top plate, bottom plate, horizontal partition, side plate and vertical partition are rectangular steel plates. The bottom plate, horizontal partition, side plate and vertical partition are arranged to form a first cavity, and the oil cleaning module is arranged in the first cavity; the top plate, horizontal partition, side plate and vertical partition are arranged to form a second cavity, and the maintenance module is arranged in the second cavity.

3. The driven wire rope oil cleaning, maintenance and waste oil recovery device for cranes according to claim 2 is characterized in that: The top plate is provided with a plurality of upper through holes corresponding one-to-one to and adapted to the steel wire ropes of the lifting equipment, the transverse partition is provided with a plurality of through holes corresponding one-to-one to the upper through holes and adapted to the steel wire ropes, and the bottom plate is provided with a plurality of lower through holes corresponding one-to-one to the through holes and adapted to the steel wire ropes. Protective tubes are threadedly connected in the upper through holes, through holes and lower through holes, and the inner diameter of the protective tubes is adapted to the diameter of the steel wire ropes.

4. The driven wire rope oil cleaning, maintenance and waste oil recovery device for cranes according to claim 3 is characterized in that: A sleeve is provided at the driving end of the brush driving member, a pressure sensor is arranged in the sleeve, and a connecting rod is provided on the outside of the brush holder. The connecting rod is inserted into the sleeve and abuts against the pressure sensor.

5. The driven wire rope oil cleaning, maintenance and waste oil recovery device for cranes according to claim 4 is characterized in that: The brush driving member and the pressure sensor are electrically connected to the controller, which is installed on the casing. The controller adopts a PLC controller, and the brush driving member adopts an electric push rod.

6. The driven wire rope oil cleaning, maintenance and waste oil recovery device for cranes according to claim 5, characterized in that: The maintenance module includes a cylindrical maintenance box and an oiling tube arranged in the center of the maintenance box. The upper and lower ends of the oiling tube are open and respectively connected to the corresponding upper through hole and through hole. The upper and lower ends of the oiling tube pass through the maintenance box. A storage cavity for storing grease is formed between the inner wall of the maintenance box and the outer wall of the oiling tube. The lower end of the storage cavity is provided with a grease outlet connected to the inner cavity of the oiling tube, and the upper end of the storage cavity is provided with an extrusion mechanism.

7. The driven wire rope oil cleaning, maintenance and waste oil recovery device for cranes according to claim 6, characterized in that: The extrusion mechanism includes an electric telescopic rod and a piston connected to the electric telescopic rod. The electric telescopic rod is arranged on the inner wall of the upper end of the maintenance box and is used to press down the piston. The piston is interference fit with the inner wall of the storage chamber. The electric telescopic rod is electrically connected to the controller.

8. The driven wire rope oil cleaning, maintenance and waste oil recovery device for cranes according to claim 7, characterized in that: The upper end of the inner cavity of the oil coating tube is configured as a tapered cavity with a gradually decreasing inner diameter, and the inner diameter of the open upper end of the tapered cavity is the same as the inner diameter of the protection tube.

9. The driven wire rope oil cleaning, maintenance and waste oil recovery device for cranes according to claim 8, characterized in that: The waste oil recovery module includes a recovery box and a suction pump. The recovery box is fixed to the outer wall of the casing by screws. The suction pump is arranged on the recovery box. The oil outlet end of the suction pump is connected to the recovery box through a pipeline. The oil inlet end of the suction pump is connected to the recovery pipe, and the recovery pipe extends into the first cavity of the casing.

10. The driven wire rope oil cleaning, maintenance and waste oil recovery device for cranes according to claim 1, characterized in that: The inner surface of the brush holder is semicircular, and the bristles of the cleaning brush are made of PA material.

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