A petroleum swivel

Abstract

The utility model relates to petroleum turntable technical field especially relates to a kind of petroleum turntable, including base body and upper cover, base body is provided with installation recess, installation recess is provided with installation through-hole, base body includes upper base, middle base and lower base, upper base, middle base and lower base are formed with transmission recess, transmission recess is rotatably connected with transmission gear, transmission gear is provided with transmission shaft that protrude base body outside, transmission gear is engaged transmission with rotating gear, rotating gear is set in installation recess, the central hole of rotating gear is fixedly connected with rotating shaft, rotating shaft is set along installation through-hole and is passed, the end of rotating shaft away from rotating gear is fixedly connected with centrifugal oil guide disc, centrifugal oil guide disc is rotatably connected in lower base, oil return passage is formed between middle base and lower base with installation recess and transmission recess communication, transmission recess is communicated with the oil inlet that penetrates upper cover. Through the structure design of above-mentioned, closed loop lubricating oil circulation is completed, and the waste of lubricating oil resources is reduced.

Description

Technical Field

[0001] This utility model relates to the field of oil rotary table technology, and in particular to an oil rotary table. Background Technology

[0002] As a core rotating piece of equipment in oil drilling engineering, the oil rotary table's gear transmission system and bearing support structure need to operate continuously under extreme conditions. It must withstand not only high loads and high-speed mechanical stress but also long-term resistance to the erosion and contamination of mud media. However, existing oil rotary tables inject lubricating oil into the transmission groove or gear cavity through the inlet. After lubricating the transmission gears, excess lubricating oil is directly discharged outside the rotary table through a pre-designed drain channel due to gravity or centrifugal force, unable to re-enter the lubrication cycle. This results in extremely low lubricating oil recycling rates, leading to serious waste of lubricating oil resources and requiring frequent replenishment of new lubricating oil, increasing the maintenance costs of the oil rotary table. Therefore, it is necessary to improve the existing technology to solve these problems. Utility Model Content

[0003] The purpose of this utility model is to provide an oil rotary table that solves the problem in the prior art where excess lubricating oil after lubricating the transmission gears of the oil rotary table is directly discharged outside the rotary table and cannot re-participate in the lubrication cycle, resulting in a waste of lubricating oil resources.

[0004] To achieve the above objectives, this utility model provides an oil rotary table, including a base body and an upper cover connected to the base body. The base body is provided with an installation groove, and the installation groove is provided with an installation through hole penetrating the upper cover. The base body includes an upper base, a middle base, and a lower base. The middle base is connected to the lower base, and the upper base is connected to the lower base. The upper base, middle base, and lower base form a transmission groove. A transmission gear is rotatably connected in the transmission groove. The transmission gear is provided with a transmission shaft extending out of the base body. The transmission gear meshes with a horizontally placed rotating gear. The rotating gear is located in the installation groove. A rotating shaft is fixedly connected to the center hole of the rotating gear. The rotating shaft is penetrating along the installation through hole. A centrifugal oil guide plate is fixedly connected to the end of the rotating shaft away from the rotating gear. The centrifugal oil guide plate is rotatably connected to the lower base through the rotating shaft. An oil return channel is formed between the middle base and the lower base, communicating with the installation groove and the transmission groove. The transmission groove is connected to an oil inlet penetrating the upper cover.

[0005] Furthermore, the centrifugal oil guide plate includes an upper plate and a lower plate arranged coaxially. Multiple centrifugal blades are evenly distributed circumferentially between the upper plate and the lower plate. The inner circumferential surface of the upper plate and the outer circumferential surface of the rotating shaft form an annular falling channel. The outer circumferential surface of the upper plate is attached to the outer groove wall of the mounting groove. The inner circumferential surface of the lower plate is fixedly connected to the outer circumferential surface of the rotating shaft. The radial distance D1 of the outer circumferential surface of the lower plate is smaller than the radial distance D2 of the outer circumferential surface of the upper plate.

[0006] Furthermore, the lower end face of the upper plate is provided with a baffle ring extending downward along the axial direction. The axial distance D3 between the lower end face of the baffle ring and the bottom surface of the mounting groove is less than the axial distance D4 between the bottom surface of the oil return channel and the bottom surface of the mounting groove.

[0007] Furthermore, the bottom of the mounting groove is provided with a downwardly recessed sedimentation annular groove, and the baffle ring is located directly above the sedimentation annular groove.

[0008] Furthermore, the lower base is provided with a first oil outlet that connects to the sedimentation concave annular groove.

[0009] Furthermore, the lower base is provided with a second oil outlet that connects to the transmission groove.

[0010] Furthermore, the central hole of the rotating gear is a non-circular transmission hole, and the outer circumferential surface of the rotating shaft is provided with a transmission boss that is interference-fitted with the transmission hole. The transmission boss is embedded in the transmission hole so that the rotating shaft can rotate with the rotating gear.

[0011] Furthermore, a positioning boss is provided on the outer circumferential surface of the rotating shaft. The positioning boss is located below the transmission boss, and the lower end face of the rotating gear abuts against the upper end face of the positioning boss.

[0012] Furthermore, an upper sealing end cover is fitted at the connection between the rotating shaft and the upper cover, and an upper sealing ring is provided between the upper sealing end cover and the upper cover. A lower sealing end cover is fitted at the connection between the rotating shaft and the lower base, and a lower sealing ring is provided between the lower sealing end cover and the lower base.

[0013] The oil rotary table provided by this utility model, compared with the prior art, allows lubricating oil to enter the transmission groove from the oil inlet. During the meshing operation of the transmission gears, the adsorbed lubricating oil is transferred to the rotating gears through contact, ensuring that both gear pairs are adequately lubricated and effectively reducing meshing friction loss. During the lubrication process, the rotating gears will throw excess lubricating oil off the tooth surface due to centrifugal force. This excess oil drips onto the centrifugal oil guide plate. The centrifugal oil guide plate, relying on the centrifugal force generated by high-speed rotation, throws the dispersed lubricating oil into the mounting groove. As more and more lubricating oil accumulates in the part of the mounting groove below the centrifugal oil guide plate, the oil pressure in this part increases, and the lubricating oil can only flow back to the transmission groove through the return oil channel, completing the circulation of lubricating oil throughout the entire oil rotary table, reducing the waste of lubricating oil resources, and improving lubrication efficiency and reliability. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 yes Figure 1 Sectional view at CC;

[0016] Figure 3 This is an exploded view of the present invention;

[0017] Figure 4 yes Figure 2 A magnified structural diagram of part A in the middle;

[0018] Figure 5 yes Figure 2 A magnified structural diagram of part B in the middle section;

[0019] Figure 6 This is a three-dimensional structural diagram of the base body;

[0020] Figure 7 yes Figure 6 Sectional view at point DD;

[0021] Figure 8 This is a schematic diagram of the three-dimensional structure of the lower base;

[0022] Figure 9 This is a cross-sectional view of the centrifugal oil guide plate.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Base body; 10. Mounting groove; 11. Mounting through hole; 12. Upper base; 13. Middle base; 14. Lower base; 15. Transmission groove; 16. Oil return channel; 17. Sedimentation concave annular groove; 18. First oil outlet; 19. Second oil outlet; 2. Top cover; 21. Oil inlet; 3. Transmission gear; 31. Transmission shaft; 4. Rotating gear; 41. Transmission hole; 5. Rotating shaft; 51. Transmission boss; 52. Positioning boss; 6. Centrifugal oil guide plate; 60. Annular falling channel; 61. Upper plate; 62. Lower plate; 63. Centrifugal blade; 64. Baffle ring; 7. Upper sealing end cover; 71. Upper sealing ring; 8. Lower sealing end cover; 81. Lower sealing ring. Detailed Implementation

[0025] The present invention will be described in detail below with reference to specific embodiments.

[0026] In this utility model, unless otherwise explicitly specified and limited, when terms such as "set in," "connected," or "linked" appear, these terms should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or a connection through one or more intermediate media. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The directional terms appearing in this utility model are for the purpose of better describing the characteristics of the features and the relationships between them. It should be understood that when the placement direction of this utility model changes, the direction of the characteristics of the features and the relationships between them also changes accordingly. Therefore, directional terms do not constitute an absolute limitation on the characteristics of the features and the relationships between them in space, but only a relative limitation.

[0027] This utility model provides an oil rotary table, such as Figures 1 to 9 As shown, it includes a base body 1 and an upper cover 2 connected to the base body 1. The base body 1 is provided with a mounting groove 10, and the mounting groove 10 is provided with a mounting through hole 11 penetrating the upper cover 2. The base body 1 includes an upper base 12, a middle base 13, and a lower base 14. The middle base 13 is connected to the lower base 14, and the upper base 12 is connected to the lower base 14. The upper base 12, the middle base 13, and the lower base 14 form a transmission groove 15. A transmission gear 3 is rotatably connected in the transmission groove 15. The transmission gear 3 is provided with a transmission shaft 31 extending out of the base body 1. The transmission gear 3 meshes with a horizontally placed rotating gear 4, which is located in the mounting groove 10. A rotating shaft 5 is fixedly connected to the center hole of the rotating gear 4. The rotating shaft 5 passes through the mounting through hole 11. A centrifugal oil guide plate 6 is fixedly connected to the end of the rotating shaft 5 away from the rotating gear 4. The centrifugal oil guide plate 6 is rotatably connected to the lower base 14 through the rotating shaft 5. An oil return channel 16 is formed between the middle base 13 and the lower base 14, which communicates with the mounting groove 10 and the transmission groove 15. The transmission groove 15 is connected to an oil inlet 21 that passes through the upper cover 2.

[0028] Based on the above structural configuration, lubricating oil enters the transmission groove 15 from the oil inlet 21. During the meshing operation of the transmission gear 3, the adsorbed lubricating oil is transferred to the rotating gear 4 through contact, ensuring that both gear pairs are adequately lubricated and effectively reducing meshing friction loss. During the lubrication process, the rotating gear 4 will throw excess lubricating oil off the tooth surface due to centrifugal force. This excess oil drips onto the centrifugal oil guide plate 6. The centrifugal oil guide plate 6 relies on the centrifugal force generated by high-speed rotation to throw the dispersed lubricating oil into the mounting groove 10. As more and more lubricating oil accumulates in the part of the mounting groove 10 below the centrifugal oil guide plate 6, the oil pressure in this part increases, and the lubricating oil can only flow back to the transmission groove 15 through the return oil channel 16, completing the circulation of lubricating oil in the entire oil turntable, reducing the waste of lubricating oil resources, and improving lubrication efficiency and reliability.

[0029] In this embodiment, the centrifugal oil guide plate 6 includes an upper plate 61 and a lower plate 62 arranged coaxially. Multiple centrifugal blades 63 are evenly distributed circumferentially between the upper plate 61 and the lower plate 62. An annular falling channel 60 is formed between the inner circumferential surface of the upper plate 61 and the outer circumferential surface of the rotating shaft 5. The outer circumferential surface of the upper plate 61 is attached to the outer groove wall of the mounting groove 10. The inner circumferential surface of the lower plate 62 is fixedly connected to the outer circumferential surface of the rotating shaft 5. The radial distance D1 of the outer circumferential surface of the lower plate 62 is smaller than the radial distance D2 of the outer circumferential surface of the upper plate 61. During the meshing operation of the transmission gear 3 and the rotating gear 4, excess lubricating oil drips onto the upper plate 61. When there is enough lubricating oil above the upper plate 61, some of the lubricating oil falls into the lower plate 62 through the annular falling channel 60 and then enters the centrifugal blade 63 area. Under the action of centrifugal force, it is thrown to the outer periphery and falls into the mounting groove 10. Finally, it flows to the transmission groove 15 through the return oil channel 16, which prevents the lubricating oil from accumulating on the surface of the centrifugal oil guide plate 6. The lubricating oil circulates throughout the entire oil turntable so that all components can be lubricated.

[0030] In this embodiment, the lower end face of the upper plate 61 is provided with a baffle ring 64 extending axially downward. The axial distance D3 between the lower end face of the baffle ring 64 and the bottom surface of the mounting groove 10 is less than the axial distance D4 between the bottom surface of the oil return channel 16 and the bottom surface of the mounting groove 10. This structural design guides the lubricating oil to flow along the guide surface of the baffle ring 64, ensuring that after the baffle ring 64 falls to the bottom of the mounting groove 10, the lubricating oil flows through the oil return channel 16 to the transmission groove 15, preventing the lubricating oil from splashing due to centrifugal force directly impacting the groove wall of the mounting groove 10.

[0031] In this embodiment, a downwardly recessed sedimentation annular groove 17 is provided at the bottom of the mounting groove 10, and the baffle ring 64 is located directly above the sedimentation annular groove 17. The sedimentation annular groove 17 allows impurities mixed in the lubricating oil to settle and accumulate at the bottom of the sedimentation annular groove 17 due to gravity during the lubricating oil return process, preventing impurities from re-entering the transmission groove 15 with the return oil channel 16, thus playing the role of oil filtration and impurity collection, and improving oil cleanliness.

[0032] In this embodiment, the lower base 14 is provided with a first oil outlet 18 that connects to the sedimentation concave annular groove 17. The first oil outlet 18 can discharge the accumulated impurities with the lubricating oil, which is convenient for regular cleaning and maintenance.

[0033] In this embodiment, the lower base 14 is provided with a second oil outlet 19 that connects to the transmission groove 15. The second oil outlet 19 can discharge the impurities accumulated in the transmission groove 15 with the lubricating oil, thus preventing the impurities from accumulating in the transmission groove 15 and affecting the operation of the transmission gear 3.

[0034] In this embodiment, the central hole of the rotating gear 4 is a non-circular transmission hole 41, and the outer circumferential surface of the rotating shaft 5 is provided with a transmission boss 51 that is interference-fitted with the transmission hole 41. The transmission boss 51 is embedded in the transmission hole 41 so that the rotating shaft 5 can rotate with the rotating gear 4. The above structural design can avoid relative slippage between the rotating gear 4 and the rotating shaft 5, ensuring the accuracy and reliability of power transmission.

[0035] In this embodiment, a positioning boss 52 is also provided on the outer peripheral surface of the rotating shaft 5. The positioning boss 52 is located below the transmission boss 51, and the lower end face of the rotating gear 4 abuts against the upper end face of the positioning boss 52. Through the above structural design, the axial movement of the rotating gear 4 on the rotating shaft 5 can be effectively restricted, avoiding gear misalignment caused by vibration or impact, and improving stability.

[0036] In this embodiment, an upper sealing end cap 7 is fitted at the connection between the rotating shaft 5 and the upper cover 2, and an upper sealing ring 71 is provided between the upper sealing end cap 7 and the upper cover 2. A lower sealing end cap 8 is fitted at the connection between the rotating shaft 5 and the lower base 14, and a lower sealing ring 81 is provided between the lower sealing end cap 8 and the lower base 14. The above structural design can effectively prevent lubricating oil from leaking from the gap between the rotating shaft 5 and the upper cover 2 or the gap between the rotating shaft 5 and the lower base 14, while preventing external dust and impurities from entering the mounting groove 10 and contaminating the lubricating oil.

[0037] In summary, this type of oil rotary table can solve the problem in the existing technology where excess lubricating oil after lubricating the transmission gears is directly discharged outside the rotary table and cannot re-participate in the lubrication cycle, resulting in a waste of lubricating oil resources.

[0038] Where there is no conflict, the above embodiments and features can be combined with each other.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. An oil rotary table, characterized in that: The system includes a base body (1) and an upper cover (2) connected to the base body (1). The base body (1) is provided with a mounting groove (10), and the mounting groove (10) is provided with a mounting through hole (11) penetrating the upper cover (2). The base body (1) includes an upper base (12), a middle base (13), and a lower base (14). The middle base (13) is connected to the lower base (14), and the upper base (12) is connected to the lower base (14). The upper base (12), the middle base (13), and the lower base (14) form a transmission groove (15). A transmission gear (3) is rotatably connected in the transmission groove (15). The transmission gear (3) is provided with a transmission shaft (31) extending out of the base body (1). The transmission gear (3) meshes with a horizontally placed rotating gear (4). The rotating gear (4) is set in the mounting groove (10). The center hole of the rotating gear (4) is fixedly connected to a rotating shaft (5). The rotating shaft (5) passes through the mounting through hole (11). The end of the rotating shaft (5) away from the rotating gear (4) is fixedly connected to a centrifugal oil guide plate (6). The centrifugal oil guide plate (6) is rotatably connected to the lower base (14) through the rotating shaft (5). A return oil channel (16) is formed between the middle base (13) and the lower base (14) and communicates with the mounting groove (10) and the transmission groove (15). The transmission groove (15) is connected to an oil inlet (21) that passes through the upper cover (2).

2. The oil rotary table according to claim 1, characterized in that: The centrifugal oil guide plate (6) includes an upper plate (61) and a lower plate (62) arranged coaxially. Multiple centrifugal blades (63) are evenly distributed circumferentially between the upper plate (61) and the lower plate (62). An annular falling channel (60) is formed between the inner circumferential surface of the upper plate (61) and the outer circumferential surface of the rotating shaft (5). The outer circumferential surface of the upper plate (61) is attached to the outer groove wall of the mounting groove (10). The inner circumferential surface of the lower plate (62) is fixedly connected to the outer circumferential surface of the rotating shaft (5). The radial distance D1 of the outer circumferential surface of the lower plate (62) is smaller than the radial distance D2 of the outer circumferential surface of the upper plate (61).

3. The oil rotary table according to claim 2, characterized in that: The lower end face of the upper plate (61) is provided with a baffle ring (64) extending downward along the axial direction. The axial distance D3 between the lower end face of the baffle ring (64) and the bottom surface of the mounting groove (10) is less than the axial distance D4 between the bottom surface of the oil return channel (16) and the bottom surface of the mounting groove (10).

4. The oil rotary table according to claim 3, characterized in that: The bottom of the mounting groove (10) is provided with a downwardly recessed sedimentation annular groove (17), and the baffle ring (64) is located directly above the sedimentation annular groove (17).

5. The oil rotary table according to claim 4, characterized in that: The lower base (14) is provided with a first oil outlet (18) that connects to the sedimentation concave annular groove (17).

6. The oil rotary table according to claim 1, characterized in that: The lower base (14) is provided with a second oil outlet (19) that connects to the transmission groove (15).

7. The oil rotary table according to claim 1, characterized in that: The center hole of the rotating gear (4) is a non-circular transmission hole (41). The outer circumferential surface of the rotating shaft (5) is provided with a transmission boss (51) that is interference-fitted with the transmission hole (41). The transmission boss (51) is embedded in the transmission hole (41) so that the rotating shaft (5) can rotate with the rotating gear (4).

8. The oil rotary table according to claim 7, characterized in that: The outer circumferential surface of the rotating shaft (5) is also provided with a positioning boss (52), which is located below the transmission boss (51), and the lower end face of the rotating gear (4) abuts against the upper end face of the positioning boss (52).

9. The oil rotary table according to claim 1, characterized in that: An upper sealing end cap (7) is fitted at the connection between the rotating shaft (5) and the upper cover (2), and an upper sealing ring (71) is provided between the upper sealing end cap (7) and the upper cover (2). A lower sealing end cap (8) is fitted at the connection between the rotating shaft (5) and the lower base (14), and a lower sealing ring (81) is provided between the lower sealing end cap (8) and the lower base (14).

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