Novel self-circulation lubricating crowned tooth connecting shaft

Abstract

The invention discloses a novel self-circulation lubricating drum-shaped tooth connecting shaft, and relates to the technical field of transmission connecting shafts, the drum-shaped tooth connecting shaft comprises a roller end assembly, a shaft assembly, a sleeve assembly and a tooth end assembly, the shaft assembly comprises a main shaft, sleeve supporting rings and in-shaft top blocks, two symmetrical sleeve supporting rings are welded to the peripheral side of the main shaft, and the sleeve supporting rings are welded to the peripheral side of the main shaft; the two ends of the main shaft are connected with outer tooth shaft sleeves through keys, and the outer tooth shaft sleeves are provided with oil guide slopes. The spiral blades are arranged on the peripheral side of the main shaft, and the oil guide slope of the outer gear shaft sleeve, the main shaft and oil passing structures in all parts are combined, so that forced inner circulation of lubricating oil is achieved. A lubrication station, an oil tank, piping and electronic accessories do not need to be additionally arranged, so that the equipment purchase and installation cost is greatly reduced; meanwhile, lubricating oil is automatically driven to flow along with operation of the connecting shaft, core friction parts such as tooth parts are precisely lubricated, the lubricating efficiency is remarkably improved, part abrasion is effectively reduced, and the overall service life of the connecting shaft is prolonged.

Description

Technical Field

[0001] This invention relates to the field of transmission shaft technology, specifically a novel self-circulating lubricating drum-shaped gear shaft. Background Technology

[0002] In modern industrial production, drum-shaped geared shafts, as key transmission and connection components, are widely used in heavy machinery equipment such as continuous rolling mills. Their operational stability directly affects the efficiency and safety of the entire production system. Traditional lubrication methods for drum-shaped geared shafts often rely on external lubrication stations, oil tanks, complex lubrication piping, and electronic control components. This not only results in high equipment investment costs and cumbersome installation and maintenance, but also presents problems such as large space occupation of the lubrication system and easy aging and leakage of pipelines.

[0003] Meanwhile, in traditional structures, the lubricating medium is difficult to deliver accurately and efficiently to core friction parts such as the teeth, which can easily lead to insufficient lubrication, resulting in increased wear on the tooth surface, severe heat generation, and consequently shortening the service life of the coupling shaft.

[0004] Based on this, a new type of self-circulating lubricating drum-shaped gear shaft is now provided, which can eliminate the drawbacks of existing drum-shaped gear shafts. Summary of the Invention

[0005] The purpose of this invention is to provide a novel self-circulating lubricating drum-shaped gear shaft to solve the problems in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A novel self-circulating lubricating drum-shaped geared shaft includes a roller end assembly, a shaft assembly, a sleeve assembly, and a gear end assembly. The shaft assembly includes a main shaft, sleeve support rings, and an inner top block. Two symmetrical sleeve support rings are welded to the circumference of the main shaft. Both ends of the main shaft are connected to external gear sleeves via keys. The external gear sleeves are provided with oil guiding ramps. Two symmetrical spacers are fitted around the circumference of the main shaft. A top block groove is opened inside the main shaft, and a spring top block is slidably disposed in the top block groove. A spring is fixedly connected between the spring top block and the top block groove. An inner top block is embedded at the end of the main shaft away from the spring top block. Both ends of the main shaft are connected to the roller end assembly and the shaft assembly through the external teeth of the external gear sleeves. A sleeve assembly is provided around the circumference of the main shaft for protection and to facilitate lubrication of the main shaft.

[0007] Based on the above technical solutions, the present invention also provides the following optional technical solutions: In one alternative embodiment: the roller end assembly includes a retaining sleeve, a roller end bushing, and a liner. The roller end bushing is connected to the external gear bushing via a gear engagement. The roller end bushing is provided with a liner inside. The roller end bushing is fixed to the retaining sleeve by bolts.

[0008] In one alternative: the toothed end assembly includes a toothed end bushing, which is connected to the outer toothed bushing via a toothed engagement.

[0009] In one alternative: both the roller end bushing and the tooth end bushing are fixed with a connecting plate by bolts, and a connecting plate top block is embedded in the side wall of the connecting plate. The connecting plate top block near the roller end bushing abuts against a spring top block, and the connecting plate top block near the tooth end bushing abuts against an inner shaft top block.

[0010] In one alternative embodiment: the sleeve assembly includes a sleeve cap, a support copper ring, and a sleeve. A sleeve retainer is fixedly connected to the periphery of the sleeve. Two symmetrical support copper rings are installed on the inner side of the sleeve, and the support copper rings slide in contact with the sleeve support ring. Both ends of the sleeve are fixedly connected to sleeve caps by bolts. The roller end sleeve and the tooth end sleeve are both fixedly connected to sealing end caps by bolts. A labyrinth flange II and a bearing cap are installed on the sealing end caps by bolts. The labyrinth flange II is fitted with a labyrinth flange I. The labyrinth flange I and the labyrinth flange II are connected to a bearing retainer by a bearing. A sealing cover is installed between the sleeve cap and the bearing retainer by bolts. Several oil holes are opened on the periphery of the sleeve, and valves are installed in each oil hole. An end cap sealing ring is embedded between the sealing end cap and the labyrinth flange II; An external sealing ring is provided between the labyrinth flange and the sealing end cap.

[0011] In one alternative: both the first labyrinth flange and the second labyrinth flange are provided with a labyrinth structure.

[0012] In one alternative: an adjusting pressure ring is installed between the labyrinth flange one and the labyrinth flange two via a positioning pin; the adjusting pressure ring has a sealing groove; a pressure ring sealing ring is embedded in the sealing groove; and a sliding sealing ring is embedded in the labyrinth flange two.

[0013] In one alternative: the two sleeves are connected by an adjusting rod via a radial spherical bearing.

[0014] In one alternative: the labyrinth flange has a spring groove, and a compression spring is provided in the spring groove, the compression spring abutting against the adjusting pressure ring.

[0015] In one alternative: helical blades are welded to the periphery of the main shaft.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention achieves forced internal circulation of lubricating oil by incorporating helical blades around the spindle, combined with the oil guide ramp of the external gear bushing, and the oil circulation structure inside the spindle and various components. It eliminates the need for additional lubrication stations, oil tanks, piping, and electronic components, significantly reducing equipment procurement and installation costs. Simultaneously, the lubricating oil flows automatically as the shaft rotates, precisely lubricating core friction areas such as the gear teeth, significantly improving lubrication efficiency, effectively reducing component wear, and extending the overall service life of the shaft.

[0017] This invention employs a labyrinth structure of labyrinth flange one and labyrinth flange two, combined with multiple sealing components such as end cap sealing ring, external sealing ring, pressure ring sealing ring, and sliding sealing ring, to form all-round sealing protection; in addition, the compression spring can automatically compensate for and adjust the wear of the pressure ring, ensuring that a tight seal is maintained even after long-term use, effectively preventing lubricating oil leakage, reducing resource waste and environmental pollution, and ensuring the stability of the lubrication system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a partial cross-sectional view of the present invention.

[0020] Figure 3 This is a cross-sectional view of the roller end assembly of the present invention.

[0021] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle.

[0022] Figure 5 For the present invention Figure 4 Enlarged view of section B in the middle.

[0023] Figure 6 This is a cross-sectional view of the adjusting linkage of the present invention.

[0024] Figure 7 For the present invention Figure 6 Enlarged view of point C.

[0025] Figure 8 This is a schematic diagram of the lubricating oil flow direction according to the present invention.

[0026] Figure reference numerals: 1. retaining sleeve, 2. roller end sleeve, 3. liner, 4. connecting disc, 5. connecting disc top block, 6. external gear sleeve, 7. spacer, 8. spring top block, 9. main shaft, 10. sleeve support ring, 11. inner shaft top block, 12. gear end sleeve, 13. sealing end cover, 14. labyrinth flange one, 15. labyrinth flange two, 16. bearing, 17. bearing cage, 18. sealing cover, 19. sleeve cover, 20. support copper ring, 21. sleeve, 22. sleeve cage, 23. bearing cover, 24. external sealing ring, 25. sliding sealing ring, 26. pressure ring sealing ring, 27. adjusting pressure ring, 28. compression spring, 29. end cover sealing ring, 30. radial spherical bearing, 31. adjusting connecting rod, 32. roller end assembly, 33. shaft assembly, 34. sleeve assembly, 35. gear end assembly, 36. oil hole, 37. spiral blade. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] In one embodiment, such as Figures 1-8 As shown, a novel self-circulating lubricating drum-shaped geared shaft includes a roller end assembly 32, a shaft assembly 33, a sleeve assembly 34, and a gear end assembly 35. The shaft assembly 33 includes a main shaft 9, a sleeve support ring 10, and an inner top block 11. Two symmetrical sleeve support rings 10 are welded to the periphery of the main shaft 9. Both ends of the main shaft 9 are connected to external gear bushings 6 by keys. The external gear bushings 6 are provided with oil guide ramps. Two symmetrical spacers 7 are sleeved on the periphery of the main shaft 9. A top block groove is opened inside the main shaft 9. A spring top block 8 is slidably arranged in the top block groove. A spring is fixedly connected between the spring top block 8 and the top block groove. An inner top block 11 is embedded at the end of the main shaft 9 away from the spring top block 8. Both ends of the main shaft 9 are connected to the roller end assembly 32 and the shaft assembly 33 through the external teeth of the external gear bushings 6. A sleeve assembly 34 is provided on the periphery of the main shaft 9 to protect the main shaft 9 and facilitate lubrication of the main shaft 9.

[0029] In one embodiment, the roller end assembly 32 includes a retaining sleeve 1, a roller end bushing 2, and a liner 3. The roller end bushing 2 is connected to the external gear bushing 6 by a gear engagement. The liner 3 is provided inside the roller end bushing 2, and the retaining sleeve 1 is fixed to the roller end bushing 2 by bolts.

[0030] In one embodiment, the toothed end assembly 35 includes a toothed end sleeve 12, which is connected to the external toothed sleeve 6 via a toothed engagement.

[0031] In one embodiment, both the roller end bushing 2 and the tooth end bushing 12 are fixed with a connecting plate 4 by bolts. A connecting plate top block 5 is embedded in the side wall of the connecting plate 4. The connecting plate top block 5 near the roller end bushing 2 abuts against the spring top block 8, and the connecting plate top block 5 near the tooth end bushing 12 abuts against the inner top block 11 of the shaft.

[0032] In one embodiment, the sleeve assembly 34 includes a sleeve cap 19, a support copper ring 20, and a sleeve 21. A sleeve retainer 22 is fixedly connected to the periphery of the sleeve 21. Two symmetrical support copper rings 20 are installed inside the sleeve 21. The support copper rings 20 slide in contact with the sleeve support ring 10. Both ends of the sleeve 21 are fixedly connected to the sleeve cap 19 by bolts. The roller end bushing 2 and the tooth end bushing 12 are both fixedly connected to the sealing end cap 13 by bolts. The sealing end cap 13 is bolted to a labyrinth flange 25 and a bearing cap 23. The labyrinth flange 25 is fitted with a labyrinth flange 14. The labyrinth flange 14 and the labyrinth flange 25 are connected to a bearing retainer 17 by a bearing 16. A sealing cover 18 is bolted between the sleeve cap 19 and the bearing retainer 17. A plurality of oil holes 36 are opened on the periphery of the sleeve 21, and a valve is provided in each of the oil holes 36. An end cap sealing ring 29 is embedded between the sealing end cap 13 and the labyrinth flange 15; An external sealing ring 24 is provided between the labyrinth flange 14 and the sealing end cap 13.

[0033] In one embodiment, both labyrinth flange 14 and labyrinth flange 15 are provided with a labyrinth structure.

[0034] In one embodiment, an adjusting pressure ring 27 is installed between labyrinth flange 14 and labyrinth flange 25 via a positioning pin. The adjusting pressure ring 27 has a sealing groove, and a pressure ring sealing ring 26 is embedded in the sealing groove. A sliding sealing ring 25 is embedded in labyrinth flange 25.

[0035] In one embodiment, the two sleeves 21 are connected to the adjusting rod 31 via a radial joint bearing 30.

[0036] In one embodiment, the labyrinth flange 14 is provided with a spring groove, and a compression spring 28 is provided in the spring groove, which abuts against the adjusting pressure ring 27.

[0037] In one embodiment, a helical blade 37 is welded to the circumference of the main shaft 9. When the main shaft 9 rotates, it drives the helical blade 37 to rotate. As the shaft operates, the internal thin oil can be forced to flow, lubricating key points such as the teeth.

[0038] The above embodiments disclose a novel self-circulating lubricating drum-shaped gear shaft, the specific principle of which is as follows: The liner 3 is installed to facilitate maintenance and reduce costs; the retaining sleeve 1 is installed to better position the working roller and meet the requirements of precise transmission of the shaft.

[0039] The external gear bushing 6 is equipped with an oil guide ramp, which facilitates the flow and guidance of thin oil. The spring top block 8 is provided with an oil passage hole to facilitate the lubrication of the spring with thin oil and to facilitate the flow of thin oil through the inside of the spindle. The sleeve support ring 10 is welded to the main shaft 9. Its purpose is to support the sleeve 21 on the one hand, and to facilitate the passage of thin oil through the internal oil passage hole on the other hand. The internal oil passage hole of the shaft top block 11 facilitates the passage of thin oil, lubricates the contact surface of the top block, and improves its service life. The spindle 9 has a central through hole inside, which allows for the installation of the spring top block 8 and the inner top block 11, and also meets the oil supply requirements.

[0040] The main shaft 9 is equipped with an auxiliary oil passage hole. At high speeds, the internal thin oil flows at high speeds, and the auxiliary oil passage hole better meets the flow requirements of the thin oil.

[0041] The sealing cover 18 is a rubber body structure, which ensures that the sleeve assembly still has stable sealing performance even when the shaft is angularly compensated; the labyrinth flange 14 is equipped with a labyrinth structure to reduce thin oil leakage and also serves as a bearing limiter. The labyrinth flange 215 features a labyrinth structure to reduce thin oil leakage, and a sliding sealing ring 25 to enhance overall sealing performance. Adjusting the pressure ring 27 and setting the pressure ring sealing ring 26 improves the overall sealing performance; The compression spring 28 is installed inside the labyrinth flange 14 to automatically ensure tight contact between the adjusting pressure ring 27 and the sliding sealing ring 25 after the adjusting pressure ring 27 slides and wears, thereby improving its sealing function after long-term use. The support copper ring 20 slides in contact with the sleeve support ring 10, and the contact surface is immersed in thin oil to meet the conditions for long-term operation. The sleeve 21 is provided with an oil hole, which makes it easy to inject thin oil before use and replace the thin oil during maintenance.

[0042] No additional lubrication station, oil tank, lubrication piping, electronic components, or other equipment are required. After the coupling shaft is filled with thin oil, the thin oil can be forced to flow internally as the shaft operates, lubricating critical points such as the gear teeth. This structure features high lubrication efficiency due to forced internal circulation of thin oil, while eliminating the need for additional auxiliary equipment, significantly reducing equipment costs and extending the service life of the coupling shaft.

[0043] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A novel self-circulating lubricating drum-shaped gear shaft, characterized in that, The assembly includes a roller end assembly (32), a shaft assembly (33), a sleeve assembly (34), and a toothed end assembly (35). The shaft assembly (33) includes a main shaft (9), a sleeve support ring (10), and an inner top block (11). Two symmetrical sleeve support rings (10) are welded to the periphery of the main shaft (9). Both ends of the main shaft (9) are connected to external toothed bushings (6) by keys. The external toothed bushings (6) are provided with oil guide ramps. Two symmetrical spacers (7) are sleeved on the periphery of the main shaft (9). The inner part of the main shaft (9) A top block groove is provided, and a spring top block (8) is slidably arranged in the top block groove. A spring is fixedly connected between the spring top block (8) and the top block groove. An inner top block (11) is embedded at one end of the main shaft (9) away from the spring top block (8). The two ends of the main shaft (9) are connected to the roller end assembly (32) and the shaft assembly (33) through the outer teeth of the outer gear bushing (6). A sleeve assembly (34) is provided around the main shaft (9) to protect the main shaft (9) and facilitate lubrication of the main shaft (9).

2. The novel self-circulating lubricating drum-shaped gear shaft according to claim 1, characterized in that, The roller end assembly (32) includes a retaining sleeve (1), a roller end bushing (2), and a liner (3). The roller end bushing (2) is connected to the external tooth bushing (6) by a toothed fit. The roller end bushing (2) is provided with a liner (3). The roller end bushing (2) is fixed with a retaining sleeve (1) by bolts.

3. A novel self-circulating lubricating drum-shaped gear shaft according to claim 2, characterized in that, The toothed end assembly (35) includes a toothed end bushing (12), which is connected to the external toothed bushing (6) by a toothed fit.

4. A novel self-circulating lubricating drum-shaped gear shaft according to claim 3, characterized in that, Both the roller end bushing (2) and the tooth end bushing (12) are fixed with connecting discs (4) by bolts. The side wall of the connecting disc (4) is provided with a connecting disc top block (5). The connecting disc top block (5) near the roller end bushing (2) abuts against the spring top block (8), and the connecting disc top block (5) near the tooth end bushing (12) abuts against the shaft inner top block (11).

5. A novel self-circulating lubricating drum-shaped gear shaft according to claim 3, characterized in that, The sleeve assembly (34) includes a sleeve cap (19), a support copper ring (20), and a sleeve (21). A sleeve retainer (22) is fixedly connected to the periphery of the sleeve (21). Two symmetrical support copper rings (20) are installed on the inner side of the sleeve (21). The support copper rings (20) are in sliding contact with the sleeve support ring (10). Both ends of the sleeve (21) are fixedly connected to the sleeve cap (19) by bolts. The roller end bushing (2) and the tooth end bushing (12) are both fixedly connected to the sealing end cap (13) by bolts. The sealing end cap (13) is bolted to a labyrinth flange two (15) and a bearing cover (23). The labyrinth flange two (15) is fitted with a labyrinth flange one (14). The labyrinth flange one (14) and the labyrinth flange two (15) are connected to a bearing cage (17) via a bearing (16). A sealing cover (18) is bolted between the sleeve cover (19) and the bearing cage (17). The sleeve (21) has several oil holes (36) on its periphery, and each oil hole (36) is equipped with a valve. An end cap sealing ring (29) is embedded between the sealing end cap (13) and the labyrinth flange (15). An external sealing ring (24) is provided between the labyrinth flange (14) and the sealing end cap (13).

6. A novel self-circulating lubricating drum-shaped gear shaft according to claim 5, characterized in that, Both the first labyrinth flange (14) and the second labyrinth flange (15) are equipped with a labyrinth structure.

7. A novel self-circulating lubricating drum-shaped gear shaft according to claim 5, characterized in that, An adjusting pressure ring (27) is installed between the first labyrinth flange (14) and the second labyrinth flange (15) via a positioning pin. The adjusting pressure ring (27) has a sealing groove, and a pressure ring sealing ring (26) is embedded in the sealing groove. The second labyrinth flange (15) is embedded with a sliding sealing ring (25).

8. A novel self-circulating lubricating drum-shaped gear shaft according to claim 5, characterized in that, The two sleeves (21) are connected to an adjusting rod (31) via a radial joint bearing (30).

9. A novel self-circulating lubricating drum-shaped gear shaft according to claim 5, characterized in that, The labyrinth flange (14) is provided with a spring groove, and a compression spring (28) is provided in the spring groove. The compression spring (28) abuts against the adjusting pressure ring (27).

10. A novel self-circulating lubricating drum-shaped gear shaft according to claim 1, characterized in that, The main shaft (9) is welded with helical blades (37) around its periphery.

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