Mine hoist tail rope oiling device

Abstract

The invention belongs to the technical field of mine equipment, and particularly relates to a mine hoist tail rope oiling device which comprises an oil tank, a straightening sleeve for treating a bent tail rope is fixedly connected to the top of the oil tank, an oiling mechanism is arranged in the straightening sleeve, and the oiling mechanism comprises an upper roller and a lower roller which are arranged in the straightening sleeve. The lower roller comprises an annular containing cylinder rotationally connected into the straightening sleeve, the surface of the annular containing cylinder is wrapped with first oil immersion cotton, the annular containing cylinder communicates with the oil tank, the upper roller comprises a connecting column rotationally connected into the straightening sleeve, and the surface of the connecting column is wrapped with second oil immersion cotton. The technical means that the straightening sleeve is matched with the upper roller and the lower roller is adopted, the bent portion of the tail rope can be straightened conveniently through the straightening sleeve, the rotating speed of the upper roller relative to the lower roller can be dynamically adjusted according to the swing amplitude of the tail of the tail rope, and therefore the uniformity of the oiling amount of the tail rope per unit length can be guaranteed conveniently; and the lubricating effect of the tail rope can be guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of mining equipment technology, specifically a tail rope oiling device for mine hoists. Background Technology

[0002] The tail rope is a core component of a mine hoist, responsible for transmitting power and balancing loads. Its operating condition directly determines hoisting efficiency and safety control. Insufficient lubrication can lead to tail rope jamming and increased resistance, which not only reduces hoisting speed and increases energy consumption but also hinders efficient hoisting. Therefore, it is necessary to use an oiling device to regularly lubricate the tail rope to ensure effective lubrication, maintain stable hoist operation, and lay a solid foundation for efficient mine production and safety control.

[0003] Patent application CN117326428A discloses an automatic oiling device for the tail rope of a hoist with linkage control. It includes a lower clamping plate and an upper clamping plate, with several mounting grooves between them. Oiling sponges are embedded in the grooves, and steel cables pass through the interiors of the sponges. Locking mechanisms are located at both ends of the lower and upper clamping plates. A receiving mechanism is installed at the lower part of the lower clamping plate, and an oil storage mechanism for storing the oil is fixedly installed at the upper part of the upper clamping plate. A linkage control mechanism for quantitative oil delivery is fixedly installed at the lower part of the oil storage mechanism. This invention enables uniform oiling of the steel cable, effectively preventing corrosion, extending the cable's service life, ensuring the safety of the hoisting system, and providing linkage control and the reception of excess oil.

[0004] While the aforementioned patent document can achieve uniform oiling of the tail rope, in actual use, the tail rope needs to be reversed by the tail pulley and guide pulley before oiling. The arc-shaped contour of the pulley body will cause localized, non-permanent dynamic bending. The patented device does not pre-treat this localized bending before oiling, resulting in uneven oiling at the bent areas and a decrease in the lubrication effect of the tail rope. Summary of the Invention

[0005] The purpose of this invention is to provide a tail rope oiling device for mine hoists to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tail rope oiling device for a mine hoist, comprising an oil tank, a straightening sleeve for processing bent tail ropes fixedly connected to the top of the oil tank, an oiling mechanism provided inside the straightening sleeve, the oiling mechanism comprising an upper roller and a lower roller disposed inside the straightening sleeve, the lower roller comprising an annular receiving cylinder rotatably connected inside the straightening sleeve, the surface of the annular receiving cylinder being covered with a first oil-impregnated cotton, the cylinder wall of the annular receiving cylinder having a plurality of oil outlet holes, the annular receiving cylinder communicating with the oil tank, the upper roller comprising a connecting column rotatably connected inside the straightening sleeve, the surface of the connecting column being covered with a second oil-impregnated cotton.

[0007] A cylinder is fixedly connected to the top of the straightening sleeve, and a fixed frame is fixedly connected to the output end of the cylinder. The connecting column is rotatably connected to the fixed frame. An adjustment component is provided inside the straightening sleeve to dynamically adjust the speed of the upper and lower rollers according to the swing amplitude of the tail rope.

[0008] Preferably, the adjusting assembly includes a first gear and a second gear fixedly connected to both sides of the annular receiving cylinder. A third gear meshing with the first gear and a fourth gear meshing with the second gear are respectively provided on both sides of the connecting column via splines. Two first inclined blocks are fixedly connected to the top of the inner wall of the straightening sleeve. Two second inclined blocks abutting against the first inclined blocks are slidably connected to the top of the fixing frame. A sliding column fixedly connected to the second inclined blocks is slidably connected inside the fixing frame. A first U-shaped lever cooperating with the third gear is fixedly connected to one end of the sliding column, and a second U-shaped lever cooperating with the fourth gear is fixedly connected to the other end of the sliding column. The first U-shaped lever and the second U-shaped lever are respectively engaged in the annular grooves of the third gear and the fourth gear.

[0009] Preferably, the number of teeth of the third gear is twice the number of teeth of the first gear, the number of teeth of the fourth gear is twice the number of teeth of the second gear, and the number of teeth of the first gear and the second gear are the same.

[0010] Preferably, the fixing frame has a sliding groove for the second inclined block to slide in, and a connecting spring is fixedly connected to the inner wall of the sliding groove. The side of the connecting spring away from the inner wall of the sliding groove is fixedly connected to the second inclined block.

[0011] Preferably, the inlet end of the straightening sleeve is equipped with a cover plate, and a cross-shaped groove is formed in the cover plate.

[0012] Preferably, a cross-shaped cleaning brush is provided on one side of the cover plate, which is coaxially engaged with the cross-shaped groove. The cross-shaped cleaning brush includes a cross-shaped surrounding plate fixedly connected to one side of the cover plate, and a number of clusters of cleaning bristles are fixedly connected to the inner side wall and the intersection of the cross-shaped surrounding plate.

[0013] Preferably, a rubber oil scraper ring is installed at the outlet end of the straightening sleeve.

[0014] Preferably, a pump body is fixedly connected to one side of the oil tank, one end of the pump body is connected to the inner cavity of the oil tank, and the other end of the pump body is connected to an oil pipe. One end of the oil pipe is connected to an annular container cylinder through a rotary joint.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This invention employs a straightening sleeve and upper and lower rollers in combination. The straightening sleeve facilitates the straightening of the bent parts of the tail rope, and the rotational speed of the upper roller relative to the lower roller can be dynamically adjusted by the swing amplitude of the tail rope, thereby ensuring the uniformity of the amount of oil applied per unit length of tail rope and thus ensuring the lubrication effect of the tail rope.

[0017] 2. This invention employs a combination of a straightening sleeve and a cross-shaped cleaning brush. The cross-shaped groove in the center of the cover plate helps to initially limit the range of the tail rope's swing. The cross-shaped cleaning brush facilitates cleaning of the tail rope before oiling, thus facilitating subsequent oiling work.

[0018] 3. This invention employs a combination of a straightening sleeve and a rubber scraper ring. After the tail rope is coated with oil by the upper and lower rollers, excessive oil may remain on the surface due to uneven compression. Since the inner diameter of the rubber scraper ring is slightly smaller than the diameter of the tail rope, it can tightly adhere to the surface of the tail rope through the elastic deformation of the rubber, thus scraping off the excess oil and controlling the oil film thickness within a preset range. This helps to reduce waste caused by oil dripping and pollution to the equipment environment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a side view of the straightening sleeve of the present invention.

[0021] Figure 3 This is a cross-sectional view of the internal structure of the straightening sleeve of the present invention;

[0022] Figure 4 This is a three-dimensional view of the upper and lower rollers and their associated structures of the present invention;

[0023] Figure 5 This is a cross-sectional view of the internal structure of the fixing frame of the present invention;

[0024] Figure 6 For the present invention Figure 5 The enlarged view of point A shown below;

[0025] Figure 7 This is a cross-sectional view of the internal structure of the lower roller of the present invention;

[0026] Figure 8 This is a cross-sectional view of the internal structure of the upper roller of the present invention.

[0027] In the picture:

[0028] 1. Straightening sleeve; 11. Cover plate; 12. Cross-shaped retaining plate; 13. Cleaning bristles;

[0029] 2. Oil tank; 21. Pump body;

[0030] 3. Cylinder; 31. Fixing frame; 32. Upper roller; 321. Second rotating shaft; 322. Connecting column; 323. Second oil-soaked cotton; 33. Lower roller; 331. First rotating shaft; 332. Annular receiving cylinder; 333. Oil outlet; 334. First oil-soaked cotton; 34. First gear; 35. Second gear; 36. First inclined block; 37. Second inclined block; 38. Sliding groove; 39. Connecting spring; 310. Sliding column; 311. First U-shaped paddle; 312. Third gear; 313. Second U-shaped paddle; 314. Fourth gear;

[0031] 4. Rubber scraper ring;

[0032] 5. Protective frame. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1 to 8 As shown, this embodiment of the invention provides a tail rope oiling device for a mine hoist, including an oil tank 2. A pretreatment mechanism is provided on the top of the oil tank 2. The pretreatment mechanism includes a straightening sleeve 1 fixedly connected to the top of the oil tank 2. The straightening sleeve 1 is trumpet-shaped. The diameter of the tail rope inlet end of the straightening sleeve 1 is larger than the diameter of the outlet end, and the inlet and outlet ends are connected by a smoothly transitioning conical inner cavity. The inner cavity of the straightening sleeve 1 gradually narrows along the direction of the tail rope travel, without obvious sharp edges or steps. A cover plate 11 is installed at the inlet end of the straightening sleeve 1. A cross-shaped groove is opened through the center of the cover plate 11. A cross-shaped cleaning brush that cooperates with the cross-shaped groove is provided on one side of the cover plate 11. The cross-shaped cleaning brush includes a cross-shaped surrounding plate 12 fixedly connected to one side of the cover plate 11. Several clusters of cleaning bristles 13 are fixedly connected to the inner side wall and the intersection of the cross-shaped surrounding plate 12.

[0035] Furthermore, the diameter of the inlet end of the straightening sleeve 1 is 5-8 times that of the tail rope, to accommodate the bending or swinging of the tail rope. The diameter of the outlet end of the straightening sleeve 1 is slightly larger than that of the tail rope, and the constricting inner cavity of the straightening sleeve 1 is used to continuously guide the tail rope toward the axis, ensuring that the bent parts of the tail rope can be straightened.

[0036] Furthermore, the cross-shaped groove in the center of the cover plate 11 plays a preliminary role in limiting the range of the tail rope's swing. The cross-shaped cleaning brush is coaxially engaged with the cross-shaped groove. The cross-shaped cleaning brush consists of a cross-shaped surrounding plate 12 and several clusters of cleaning bristles 13. The cross-shaped surrounding plate 12 is fixedly connected to the inner side of the cover plate 11 and faces the inner cavity of the straightening sleeve 1. The several clusters of cleaning bristles 13 are evenly distributed along the inner side wall of the cross-shaped surrounding plate 12 and at the intersection of the cross. The bristle length is slightly longer than the groove width to ensure contact with the tail rope. The material is wear-resistant nylon filament, which has the characteristics of being oil-resistant and not easily deformed, thus facilitating better cleaning of the tail rope by the equipment.

[0037] An oiling assembly is installed inside the straightening sleeve 1. The oiling assembly includes an upper roller 32 and a lower roller 33, which are symmetrically arranged at the inlet end of the straightening sleeve 1. The lower roller 33 includes a first rotating shaft 331, the two ends of which are rotatably connected to the inner cavity of the straightening sleeve 1. An annular receiving cylinder 332 is coaxially fixedly connected to the surface of the first rotating shaft 331. The length of the annular receiving cylinder 332 matches the swing range of the tail rope. Several oil outlet holes 333 are evenly opened on the cylinder wall of the annular receiving cylinder 332. The inner cavity of the annular receiving cylinder 332 forms a closed receiving cavity. A pump body 21 is fixedly connected to one side of the oil tank 2. One end of the pump body 21 communicates with the inner cavity of the oil tank 2. The other end of the pump body 21... The upper roller 32 includes a second rotating shaft 321. A connecting column 322 is fixedly connected to the surface of the upper roller 321. The surface of the annular receiving cylinder 332 is covered with a first oil-impregnated cotton 334, which is in close contact with the annular receiving cylinder 332. The upper roller 32 includes a second rotating shaft 321. A connecting column 322 is fixedly connected to the surface of the second rotating shaft 321. The surface of the connecting column 322 is covered with a second oil-impregnated cotton 323. A cylinder 3 is fixedly connected to the surface of the straightening sleeve 1. A fixing frame 31 is fixedly connected to the output end of the cylinder 3 and located in the inner cavity of the straightening sleeve 1. The second rotating shaft 321 is rotatably connected to the fixing frame 31, and the fixing frame 31 is parallel to the second rotating shaft 321.

[0038] Furthermore, the pump body 21 is driven to pump the lubricating oil in the oil tank 2 into the receiving cavity of the annular receiving cylinder 332, and the oil permeates to the first oil-impregnated cotton 334 through the oil outlet 333. At the same time, the bottom of the lower roller 33 is in contact with the oil surface of the oil tank 2. When it rotates, the first oil-impregnated cotton 334 can absorb additional oil, ensuring that the oil-impregnated cotton is always saturated, providing sufficient oil source for the lower surface and sides of the tail rope. When the tail rope passes between the two rollers, the first oil-impregnated cotton 334 of the lower roller 33 can transfer the oil to the lower surface of the tail rope and the gaps between the strands. The second oil-impregnated cotton 323 of the upper roller 32 absorbs the excess oil on the upper surface of the tail rope by squeezing, and evenly coats it on the upper surface and sides of the tail rope, making up for the oiling blind spots of the lower roller 33.

[0039] The straightening sleeve 1 is equipped with an adjusting component for adjusting the rotational speed of the upper roller 32 and the lower roller 33. The adjusting component includes a first gear 34 and a second gear 35 fixedly connected to the surface of the first rotating shaft 331. The first gear 34 and the second gear 35 are located on both sides of the lower roller 33. The surface of the second rotating shaft 321 is respectively provided with a third gear 312 and a fourth gear 314 via splines. The third gear 312 and the fourth gear 314 can slide along the axial direction of the second rotating shaft 321. The first gear 34 meshes with the third gear 312, and the second gear 35 meshes with the fourth gear 314. The third gear 312 and the fourth gear 314 are located on both sides of the upper roller 32. Two first inclined blocks 36 are fixedly connected to the top of the inner wall of the straightening sleeve 1. Two second inclined blocks 37 that abut against the first inclined blocks 36 are slidably connected to the top of the fixing frame 31. A sliding groove 38 is provided in the fixing frame 31 for the second inclined blocks 37 to slide horizontally. A connecting spring 39 is fixedly connected to the inner wall of the sliding groove 38. One side of the sliding groove 38 is fixedly connected to the second inclined block 37. A sliding column 310, which is fixedly connected to the bottom of the second inclined block 37, is slidably connected inside the fixing frame 31. One end of the sliding column 310 is fixedly connected to a first U-shaped paddle 311 that cooperates with the third gear 312, and the other end of the sliding column 310 is fixedly connected to a second U-shaped paddle 313 that cooperates with the fourth gear 314. The first U-shaped paddle 311 and the second U-shaped paddle 313 are respectively engaged in the annular grooves of the third gear 312 and the fourth gear 314. When the first U-shaped paddle 311 and the second U-shaped paddle 313 slide horizontally, they respectively drive the corresponding third gear 312 and the fourth gear 314 to move axially along the second rotating shaft 321. In the initial state, only one set of gears is engaged, and the other set of gears is in a disengaged state. When the first U-shaped paddle 311 and the second U-shaped paddle 313 drive the corresponding gears to slide axially, the original engaged set is disengaged, and the other set enters the engaged state, thereby realizing gear shifting.

[0040] Furthermore, the number of teeth of the third gear 312 is twice the number of teeth of the first gear 34, and the number of teeth of the fourth gear 314 is twice the number of teeth of the second gear 35. Since the first gear 34 and the second gear 35 have the same number of teeth, when the first gear 34 meshes with the third gear 312, the transmission ratio is 2:1, and when the second gear 35 meshes with the fourth gear 314, the transmission ratio is 2:1.

[0041] Furthermore, when the swing amplitude of the tail rope increases, the contact angle between the tail rope and the upper roller 32 and the lower roller 33 becomes unstable. By changing the sliding height of the upper roller 32, its own rotation speed can be reduced, which helps to reduce the inertial splashing of oil during the swing and avoids a sudden drop in local oil volume. When the swing amplitude of the tail rope is small, the rotation speed of the upper roller 32 can be increased, and the oil can penetrate more evenly into the gaps between the rope strands through high-frequency contact, enhancing the lubrication effect and thus meeting the actual use requirements.

[0042] The straightening sleeve 1 has two protective frames 5 fixedly connected inside. The first rotating shaft 331 and the second rotating shaft 321 are rotatably connected to the protective frames 5. The protective frames 5 are used to protect the first gear 34, the second gear 35, the third gear 312 and the fourth gear 314, thereby facilitating the extension of their service life.

[0043] A rubber oil scraper ring 4 is installed at the outlet end of the straightening sleeve 1. After the tail rope is coated with oil by the upper roller 32 and the lower roller 33, the surface may have excessive oil residue due to uneven compression. Since the inner diameter of the rubber oil scraper ring 4 is slightly smaller than the diameter of the tail rope, it can tightly fit the surface of the tail rope through the elastic deformation of the rubber, which can scrape off the excess oil and keep the oil film thickness within the preset range. This helps to reduce waste caused by oil dripping and pollution to the equipment environment.

[0044] Working principle: After a comprehensive inspection of all parts of the equipment, and after confirming that there are no errors, the oil tank 2 is fixed at the designated working location, and the tail rope is passed through the straightening sleeve 1. Since the straightening sleeve 1 is trumpet-shaped, the trumpet shape facilitates the straightening of local bends in the tail rope. During the movement of the tail rope, the arrangement of several clusters of cleaning bristles 13 facilitates the cleaning of the tail rope to be oiled, and the cross-shaped groove in the center of the cover plate 11 facilitates the initial limitation of the swing range of the tail rope, so that the cleaned tail rope is always within the oiling range of the subsequent double rollers.

[0045] The cylinder 3 allows for adaptive adjustment of the height of the upper roller 32 based on the swing amplitude of the tail rope. When the lower roller 33 rotates with the first rotating shaft 331, the first gear 34 and the second gear 35 fixed on both sides rotate synchronously. Initially, only the first gear 34 meshes with the third gear 312 on the side of the upper roller 32. Through gear transmission, the upper roller 32 rotates with the second rotating shaft 321. When the position of the upper roller 32 changes due to the change in the swing amplitude of the tail rope, the second inclined block 37 at the top of the fixing frame 31 slides along the inclined surface of the first inclined block 36 on the inner wall of the straightening sleeve 1. The second inclined block 37 compresses or releases the connecting spring 39, thereby driving the sliding column 310. The first U-shaped paddle 311 and the second U-shaped paddle 313 at the ends move horizontally, and then, through the cooperation of the paddles and the gear annular groove, push the third gear 312 and the fourth gear 314 to slide axially along the second rotating shaft 321, so that the originally meshed gear set is separated and another set of gears enters the meshing state. Since the number of teeth of the third gear 312 is twice that of the first gear 34 and the number of teeth of the fourth gear 314 is twice that of the second gear 35, and the number of teeth of the first gear 34 and the second gear 35 are the same, when the two sets of gears are meshed, the transmission ratio of the upper roller 32 speed to the lower roller 33 speed can be achieved. By switching the gear meshing group to adapt to the dynamic changes of the tail rope, the oiling is ensured to be uniform and stable.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tail rope oiling device for a mine hoist, comprising an oil tank (2), characterized in that: The top of the oil tank (2) is fixedly connected to a straightening sleeve (1) for processing the bent tail rope. The straightening sleeve (1) is provided with an oiling mechanism. The oiling mechanism includes an upper roller (32) and a lower roller (33) provided in the straightening sleeve (1). The lower roller (33) includes an annular receiving cylinder (332) rotatably connected in the straightening sleeve (1). The surface of the annular receiving cylinder (332) is covered with a first oil-impregnated cotton (334). The cylinder wall of the annular receiving cylinder (332) is provided with several oil outlet holes (333). The annular receiving cylinder (332) is connected to the oil tank (2). The upper roller (32) includes a connecting column (322). The surface of the connecting column (322) is covered with a second oil-impregnated cotton (323). A cylinder (4) is fixedly connected to the top of the straightening sleeve (1), and a fixed frame (31) is fixedly connected to the output end of the cylinder (4). The connecting column (322) is rotatably connected to the fixed frame (31). An adjustment component for adjusting the speed of the upper roller (32) and the lower roller (33) is provided inside the straightening sleeve (1).

2. The mine hoist tail rope oiling device according to claim 1, characterized in that: The adjusting assembly includes a first gear (34) and a second gear (35) fixedly connected to both sides of the annular receiving cylinder (332). The two sides of the connecting column (322) are respectively provided with a third gear (312) meshing with the first gear (34) and a fourth gear (314) meshing with the second gear (35) via splines. The top of the inner wall of the straightening sleeve (1) is fixedly connected to two first inclined blocks (36), and the top of the fixing frame (31) is slidably connected to two second inclined blocks (37) abutting against the first inclined blocks (36). The fixed frame (31) is slidably connected to a sliding column (310) that is fixedly connected to the second inclined block (37). One end of the sliding column (310) is fixedly connected to a first U-shaped paddle (311) that cooperates with the third gear (312). The other end of the sliding column (310) is fixedly connected to a second U-shaped paddle (313) that cooperates with the fourth gear (314). The first U-shaped paddle (311) and the second U-shaped paddle (313) are respectively engaged in the annular grooves of the third gear (312) and the fourth gear (314).

3. The mine hoist tail rope oiling device according to claim 2, characterized in that: The number of teeth of the third gear (312) is twice the number of teeth of the first gear (34), and the number of teeth of the fourth gear (314) is twice the number of teeth of the second gear (35). The first gear (34) and the second gear (35) have the same number of teeth.

4. The mine hoist tail rope oiling device according to claim 3, characterized in that: The fixed frame (31) has a sliding groove (38) for the second inclined block (37) to slide. A connecting spring (39) is fixedly connected to the inner wall of the sliding groove (38). The side of the connecting spring (39) away from the inner wall of the sliding groove (38) is fixedly connected to the second inclined block (37).

5. The mine hoist tail rope oiling device according to claim 1, characterized in that: The inlet end of the straightening sleeve (1) is equipped with a cover plate (11), and a cross-shaped groove is provided in the cover plate (11).

6. The mine hoist tail rope oiling device according to claim 5, characterized in that: A cross-shaped cleaning brush is provided on one side of the cover plate (11) and is coaxially engaged with the cross-shaped groove. The cross-shaped cleaning brush includes a cross-shaped surrounding plate (12) fixedly connected to one side of the cover plate (11). Several clusters of cleaning bristles (13) are fixedly connected to the inner side wall and the intersection of the cross-shaped surrounding plate (12).

7. The mine hoist tail rope oiling device according to claim 1, characterized in that: A rubber oil scraper ring (4) is installed at the outlet end of the straightening sleeve (1).

8. The mine hoist tail rope oiling device according to claim 1, characterized in that: A pump body (21) is fixedly connected to one side of the oil tank (2). One end of the pump body (21) is connected to the inner cavity of the oil tank (2), and the other end of the pump body (21) is connected to an oil pipe (22). One end of the oil pipe (22) is connected to an annular container (332) through a rotary joint.

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