Integral bearing arrangement for a coupling make-up machine

Abstract

The application relates to the field of mechanical engineering and discloses an integrated large bearing device for a coupling screwing machine. In the application, an outer ring interference mounting groove is formed in the inner side of a main clamp shell, a bearing outer ring is interference-connected to the inner side of the outer ring interference mounting groove, a roller is slidingly connected to the inner side of the bearing outer ring, a bearing inner ring is slidingly connected to the inner side of the roller, a main clamp large gear is fixedly connected to the front of the bearing inner ring, a driving gear is slidingly connected to the outer side of the main clamp large gear, and a hydraulic motor is rotationally connected to the back side of the driving gear. The application reduces on-site installation steps, improves overall rigidity, effectively prevents dust, water and pollutants from entering, prolongs bearing life, reduces vibration and noise during operation, improves equipment running stability, adopts long-acting lubrication design, simultaneously reduces abrasion through a sealing structure, saves installation space, reduces equipment weight, and can adapt to corrosive environments through material upgrading or special coating, thereby expanding application scenarios.

Description

Technical Field

[0001] This application belongs to the field of mechanical engineering technology, specifically an integrated large bearing device for a coupling screwing machine. Background Technology

[0002] The technological development of coupling screwing machines is closely related to the upgrading needs of the petroleum industry. Early machines relied primarily on manual operation, resulting in low efficiency and poor precision. In the mid-20th century, advancements in hydraulic and gear technologies led to the emergence of semi-automatic hydraulic screwing machines, achieving initial torque control, but precision remained insufficient. In the late 20th century, the application of electronic sensors and PLC technology propelled the birth of fully automated screwing machines, meeting the stringent API standards for connection strength and sealing through torque-angle closed-loop control. Entering the 21st century, the integration of the Internet of Things, artificial intelligence, and robotics has enabled intelligent equipment, making real-time data monitoring, cloud analysis, and automated robotic arm operation possible. Simultaneously, innovations in materials and lightweight design have further enhanced reliability and adaptability. In the future, digital twins, electrification, and extreme environment adaptability technologies will continue to drive the development of coupling screwing machines towards high efficiency, precision, and low carbon emissions to meet the needs of unconventional oil and gas extraction and intelligent drilling.

[0003] However, the large bearings in common coupling screwing machines are of a split structure, requiring separate adjustment of the inner ring, outer ring, cage, and other components. Assembly accuracy relies heavily on operator experience, and misalignment can easily lead to uneven loading or premature failure. The split structure introduces gaps in the joints, making it prone to deformation under heavy or impact loads, reducing overall load-bearing capacity and operational stability. Additional seals are required, offering weak protection and allowing contaminants to easily penetrate, accelerating wear. The lubrication system is not integrated, necessitating periodic manual oiling, increasing maintenance costs and downtime. Accumulated tolerances between components can cause abnormal vibrations and noise during operation, affecting equipment accuracy or user comfort. Furthermore, it is not conducive to compact equipment layouts. Utility Model Content

[0004] The purpose of this application is to provide an integrated large bearing device for a coupling screwing machine in order to solve the problems mentioned above.

[0005] The technical solution adopted in this application is as follows: an integrated large bearing device for a coupling screwing machine, comprising a main clamp housing of the equipment body, an interference fit groove for the outer ring of the bearing is provided on the inner side of the main clamp housing, an outer ring of the bearing is interference fitted on the inner side of the interference fit groove, a roller is slidably connected on the inner side of the outer ring of the bearing, an inner ring of the bearing is slidably connected on the inner side of the roller, a large gear of the main clamp is fixedly connected to the front of the inner ring of the bearing, a drive gear is slidably connected to the outer side of the large gear of the main clamp, and a hydraulic motor is rotatably connected to the back side of the drive gear.

[0006] By adopting the above technical solution, during equipment operation, the hydraulic motor is started to drive the drive gear to rotate. The rotation of the drive gear drives the inner ring of the bearing to rotate through the main clamp's large gear. The rotation of the inner ring of the bearing, through the ramp, causes the ramp plate to tighten, thereby clamping the steel pipe and causing the steel pipe to rotate. At this time, the outer side of the inner ring of the bearing rotates within the roller limiting grooves opened on the outer side of the inner ring and the inner side of the outer ring of the bearing via rollers. The outer ring of the bearing remains stationary due to the interference fit with the outer ring of the bearing in the interference fit mounting groove opened on the inner side of the main clamp housing. The pre-assembled design of this equipment integrates the bearing housing, seals, and lubrication system, reducing on-site installation steps and lowering the risk of assembly errors. The integrated structure avoids the splicing gaps of split bearings, resulting in stronger overall rigidity and the ability to withstand greater radial, axial, and combined loads. It effectively prevents dust, water, and contaminant intrusion, extending bearing life. The overall machining process ensures the coaxiality of the inner ring, outer ring, and raceway, reducing vibration and noise during operation and improving the stability of equipment operation. Integrated bearings feature a long-lasting lubrication design, reducing lubrication frequency. At the same time, the sealing structure reduces wear, resulting in better overall maintenance costs compared to traditional split bearings. The compact integrated design saves installation space and reduces equipment weight, making it suitable for applications sensitive to size and weight. Furthermore, it can be adapted to corrosive environments through material upgrades or special coatings, expanding its application scenarios.

[0007] In a preferred embodiment, an interference fit limiting protrusion is fixedly connected to the inner side of the interference fit groove of the bearing outer ring, and the bearing outer ring is slidably connected to the side of the interference fit limiting protrusion.

[0008] By adopting the above technical solutions, the installation and positioning of the integrated large bearing can be guaranteed.

[0009] In a preferred embodiment, roller limiting grooves are provided on both the outer side of the inner ring of the bearing and the inner side of the outer ring of the bearing, and rollers are slidably connected to the inner side of the roller limiting grooves.

[0010] By adopting the above technical solution, the integrated structure of the bearing avoids the splicing gap of split bearings, resulting in stronger overall rigidity and the ability to withstand greater radial, axial, and combined loads. It is suitable for heavy-duty and high-impact applications. It also effectively prevents dust, water, and contaminant intrusion, extending bearing life.

[0011] In a preferred embodiment, a ramp is fixedly connected to the inner side of the bearing inner ring.

[0012] By adopting the above technical solution, the inner diameter of the ramp plate can be reduced, thereby clamping the steel pipe and causing the steel pipe to rotate.

[0013] In a preferred embodiment, a brake cylinder is fixedly connected to the back side of the inner ring of the bearing, a brake pad limiting groove is provided on the outer side of the brake cylinder, a brake pad is slidably connected to the inner side of the brake pad limiting groove, brake pad adjusting bolts are fixedly connected to both ends of the brake pad, a brake pad fixing post is slidably connected to the outer side of the brake pad adjusting bolt, and a main caliper housing is fixedly connected to the front of the brake pad fixing post.

[0014] By adopting the above technical solution, braking can be completed by the friction of the brake pads and the brake pad limiting grooves opened on the outside of the brake cylinder after the steel pipe is processed and connected.

[0015] In a preferred embodiment, a hydraulic motor is fixedly connected to the inner side of the main clamp housing, and a drive gear is rotatably connected to the front of the hydraulic motor.

[0016] By adopting the above technical solutions, the equipment can be driven to operate, providing power for its operation.

[0017] In a preferred embodiment, an end plate connecting bolt is fixedly connected to the front of the main clamp housing, a sealing end plate is slidably connected to the outside of the end plate connecting bolt, and a nut is slidably connected to the outside of the sealing end plate.

[0018] By adopting the above technical solution, the sealing end plate is firmly connected to the main clamp housing, and it is easy to disassemble, making maintenance and repair convenient.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0020] In this application, during equipment operation, the hydraulic motor is started, driving the drive gear to rotate. The rotation of the drive gear, through the main clamp's large gear, drives the inner ring of the bearing to rotate. This rotation of the inner ring, via the ramp, causes the ramp plate to tighten, clamping the steel pipe and causing it to rotate. Simultaneously, the outer side of the inner ring rotates within roller limiting grooves on both the outer and inner sides of the bearing, while the outer ring remains stationary due to an interference fit with the inner side of the main clamp housing. This pre-assembled design integrates the bearing housing, seals, and lubrication system, reducing on-site installation steps and minimizing assembly error risks. The integrated structure avoids the splicing gaps of split bearings, resulting in greater overall rigidity and the ability to withstand larger radial, axial, and combined loads. It effectively prevents dust, water, and contaminant intrusion, extending bearing life. The overall machining process ensures the coaxiality of the inner ring, outer ring, and raceway, reducing vibration and noise during operation and improving equipment stability. Integrated bearings feature a long-lasting lubrication design, reducing lubrication frequency. At the same time, the sealing structure reduces wear, resulting in better overall maintenance costs compared to traditional split bearings. The compact integrated design saves installation space and reduces equipment weight, making it suitable for applications sensitive to size and weight. Furthermore, it can be adapted to corrosive environments through material upgrades or special coatings, expanding its application scenarios. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the device in this application;

[0022] Figure 2 This is a schematic diagram of the gear transmission structure of the device in this application;

[0023] Figure 3 This is a schematic diagram of the braking device structure in this application;

[0024] Figure 4 This is a schematic diagram of the interference fit groove structure for the bearing outer ring in the device of this application;

[0025] Figure 5 This is a schematic diagram of the integrated bearing connection structure of the device in this application;

[0026] Figure 6 This is a schematic cross-sectional view of the device in this application.

[0027] The markings in the diagram are: 1. Main clamp housing; 2. Bearing outer ring interference fit groove; 3. Bearing outer ring; 4. Roller; 5. Bearing inner ring; 6. Main clamp large gear; 7. Climbing ramp; 8. Brake cylinder; 9. Brake pad; 10. Brake pad fixing post; 11. Hydraulic motor; 12. Drive gear; 13. End plate connecting bolt; 14. Sealing end plate; 15. Nut; 16. Bearing outer ring interference fit limit protrusion; 17. Roller limit groove; 18. Brake pad limit groove; 19. Brake pad adjusting bolt. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] Example:

[0030] Reference Figure 1-6 An integrated large bearing device for a coupling screwing machine includes a main clamp housing 1. An interference fit groove 2 for the bearing outer ring is provided on the inner side of the main clamp housing 1. An outer ring 3 is interference-fitted to the inner side of the interference fit groove 2. A roller 4 is slidably connected to the inner side of the outer ring 3. An inner ring 5 is slidably connected to the inner side of the roller 4. A large gear 6 of the main clamp is fixedly connected to the front of the inner ring 5. A drive gear 12 is slidably connected to the outer side of the large gear 6. A hydraulic motor 11 is rotatably connected to the back side of the drive gear 12.

[0031] Reference Figure 1-6 During operation, the hydraulic motor 11 is started, driving the drive gear 12 to rotate. The rotation of the drive gear 12, through the main clamp's large gear 6, drives the inner ring 5 of the bearing to rotate. The rotation of the inner ring 5, via the ramp 7, causes the ramp plate to tighten, clamping the steel pipe and causing it to rotate. At this time, the outer side of the inner ring 5 rotates within the roller limiting groove 17 opened on the outer side of the inner ring 5 and the inner side of the outer ring 3, via rollers 4. The outer ring 3 remains stationary due to interference fit with the bearing outer ring interference fitting groove 2 opened on the inner side of the main clamp housing 1. The pre-assembled design of this equipment integrates the bearing housing, seals, and lubrication system, reducing on-site installation steps and mitigating assembly error risks. The integrated structure avoids the splicing gaps of split bearings, resulting in stronger overall rigidity and the ability to withstand greater radial, axial, and combined loads. It effectively prevents dust, water, and contaminant intrusion, extending bearing life. The overall machining process ensures the coaxiality of the inner ring, outer ring, and raceway, reducing vibration and noise during operation and improving the stability of equipment operation. Integrated bearings feature a long-lasting lubrication design, reducing lubrication frequency. At the same time, the sealing structure reduces wear, resulting in better overall maintenance costs compared to traditional split bearings. The compact integrated design saves installation space and reduces equipment weight, making it suitable for applications sensitive to size and weight. Furthermore, it can be adapted to corrosive environments through material upgrades or special coatings, expanding its application scenarios.

[0032] Reference Figure 1-4The inner side of the bearing outer ring interference fit groove 2 is fixedly connected to the bearing outer ring interference fit limiting protrusion 16, and the side of the bearing outer ring interference fit limiting protrusion 16 is slidably connected to the bearing outer ring 3. This ensures the secure installation and positioning of the integrated large bearing.

[0033] Reference Figure 1-5 Both the outer side of the inner ring 5 and the inner side of the outer ring 3 of the bearing are provided with roller limiting grooves 17, and rollers 4 are slidably connected to the inner side of the roller limiting grooves 17. This integrated bearing structure avoids the splicing gaps of split bearings, resulting in stronger overall rigidity and the ability to withstand greater radial, axial, and combined loads, making it suitable for heavy-duty and high-impact applications. It effectively prevents dust, water, and contaminant intrusion, extending bearing life.

[0034] Reference Figure 1-6 The inner side of the bearing inner ring 5 is fixedly connected to a ramp 7. This ramp can cause the inner diameter of the ramp plate to contract, thereby clamping the steel pipe and causing the steel pipe to rotate.

[0035] Reference Figure 1-3 A brake cylinder 8 is fixedly connected to the back side of the inner ring 5 of the bearing. A brake pad limiting groove 18 is provided on the outer side of the brake cylinder 8. A brake pad 9 is slidably connected to the inner side of the brake pad limiting groove 18. Brake pad adjusting bolts 19 are fixedly connected to both ends of the brake pad 9. A brake pad fixing post 10 is slidably connected to the outer side of the brake pad adjusting bolts 19. A main caliper housing 1 is fixedly connected to the front of the brake pad fixing post 10. Braking can be completed by the friction between the brake pad 9 and the brake pad limiting groove 18 on the outer side of the brake cylinder 8 after the steel pipe is processed and connected.

[0036] Reference Figure 1-3 A hydraulic motor 11 is fixedly connected to the inner side of the main clamp housing 1, and a drive gear 12 is rotatably connected to the front of the hydraulic motor 11. This can drive the equipment to operate and provide power for the equipment to run.

[0037] Reference Figure 1-2 An end plate connecting bolt 13 is fixedly connected to the front of the main clamp housing 1. A sealing end plate 14 is slidably connected to the outside of the end plate connecting bolt 13, and a nut 15 is slidably connected to the outside of the sealing end plate 14. This ensures a tight connection between the sealing end plate 14 and the main clamp housing 1, and facilitates disassembly, making maintenance and repair convenient.

[0038] The implementation principle of the integrated large bearing device for coupling screwing machine in this application is as follows:

[0039] During operation, the hydraulic motor 11 is started, driving the drive gear 12 to rotate. The rotation of the drive gear 12, through the main clamp's large gear 6, drives the inner ring 5 of the bearing to rotate. The rotation of the inner ring 5, via the ramp 7, causes the ramp plate to tighten, clamping the steel pipe and causing it to rotate. At this time, the outer side of the inner ring 5 rotates within the roller limiting groove 17 opened on the outer side of the inner ring 5 and the inner side of the outer ring 3, via rollers 4. The outer ring 3 remains stationary due to interference fit with the bearing outer ring interference fitting groove 2 opened on the inner side of the main clamp housing 1. The pre-assembled design of this equipment integrates the bearing housing, seals, and lubrication system, reducing on-site installation steps and mitigating assembly error risks. The integrated structure avoids the splicing gaps of split bearings, resulting in stronger overall rigidity and the ability to withstand greater radial, axial, and combined loads. It effectively prevents dust, water, and contaminant intrusion, extending bearing life. The overall machining process ensures the coaxiality of the inner ring, outer ring, and raceway, reducing vibration and noise during operation and improving equipment stability. Integrated bearings feature a long-lasting lubrication design, reducing lubrication frequency. At the same time, the sealing structure reduces wear, resulting in better overall maintenance costs compared to traditional split bearings. The compact integrated design saves installation space and reduces equipment weight, making it suitable for applications sensitive to size and weight. Furthermore, it can be adapted to corrosive environments through material upgrades or special coatings, expanding its application scenarios.

[0040] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An integrated large bearing device for a coupling screwing machine, comprising the main body of the equipment, a main clamp housing (1), characterized in that: The inner side of the main clamp housing (1) is provided with an interference fit groove (2) for the outer ring of the bearing. The inner side of the interference fit groove (2) is connected to the outer ring of the bearing (3). The inner side of the outer ring of the bearing (3) is slidably connected to a roller (4). The inner side of the roller (4) is slidably connected to a bearing inner ring (5). The front of the bearing inner ring (5) is fixedly connected to the main clamp large gear (6). The outer side of the main clamp large gear (6) is slidably connected to a drive gear (12). The back side of the drive gear (12) is rotatably connected to a hydraulic motor (11).

2. The integrated large bearing device for a coupling screwing machine as described in claim 1, characterized in that: The inner side of the bearing outer ring interference mounting groove (2) is fixedly connected to the bearing outer ring interference mounting limiting protrusion (16), and the bearing outer ring (3) is slidably connected to the side of the bearing outer ring interference mounting limiting protrusion (16).

3. The integrated large bearing device for a coupling screwing machine as described in claim 1, characterized in that: Roller limiting grooves (17) are provided on the outer side of the bearing inner ring (5) and the inner side of the bearing outer ring (3), and rollers (4) are slidably connected to the inner side of the roller limiting grooves (17).

4. The integrated large bearing device for a coupling screwing machine as described in claim 1, characterized in that: The inner side of the bearing inner ring (5) is fixedly connected to a ramp (7).

5. The integrated large bearing device for a coupling screwing machine as described in claim 1, characterized in that: A brake cylinder (8) is fixedly connected to the back side of the inner ring (5) of the bearing. A brake pad limiting groove (18) is provided on the outer side of the brake cylinder (8). A brake pad (9) is slidably connected to the inner side of the brake pad limiting groove (18). Brake pad adjusting bolts (19) are fixedly connected to both ends of the brake pad (9). A brake pad fixing post (10) is slidably connected to the outer side of the brake pad adjusting bolt (19). A main caliper housing (1) is fixedly connected to the front of the brake pad fixing post (10).

6. The integrated large bearing device for a coupling screwing machine as described in claim 1, characterized in that: A hydraulic motor (11) is fixedly connected to the inner side of the main clamp housing (1), and a drive gear (12) is rotatably connected to the front of the hydraulic motor (11).

7. The integrated large bearing device for a coupling screwing machine as described in claim 1, characterized in that: The front of the main clamp housing (1) is fixedly connected to an end plate connecting bolt (13), and a sealing end plate (14) is slidably connected to the outside of the end plate connecting bolt (13), and a nut (15) is slidably connected to the outside of the sealing end plate (14).

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