Hydraulic rotary table for on-line repair

Abstract

The utility model discloses a kind of hydraulic rotary table with overhaul operation pressure, comprising: base;Hydraulic motor, install on base, hydraulic motor is provided with two groups, and respectively located at both ends of base;Driving gear, install on the output shaft of corresponding hydraulic motor, and the end of the away from hydraulic motor is respectively connected with brake;Slewing bearing part, including rotary table and big gear connected coaxially in the outer periphery of rotary table, the both sides of big gear are connected with corresponding driving gear by bridge gear respectively;Rotary table, the upper end surface center of which is equipped with rotary table bearing platform for connecting slip lower flange, the center of rotary table bearing platform is equipped with polygonal sink, polygonal sink and polygonal tenon of the lower end of roller complementing core are matched with each other.The utility model rotary table designs polygonal sink and rotary table bolt hole, for adapting the installation of roller complementing core and slip, so that it can firmly hold different types of drill pipe, enhance clamping capacity, improve the applicability and operation efficiency of equipment.

Description

Technical Field

[0001] This utility model relates to a wellhead hydraulic rotary table, and more particularly to a hydraulic rotary table for pressurized overhaul operations, belonging to the field of petroleum machinery technology. Background Technology

[0002] The rotary table is an important component of engineering drilling rigs. During construction, it is used to clamp and disassemble drill rods, and to transmit torque and axial force to the drill rods.

[0003] However, existing hydraulic rotary tables have the following problems during overhaul operations: In actual work sites, there are numerous wellheads, and the types of drill pipes used vary, such as angular drill pipes and round drill pipes. Different types of drill pipes require different clamping devices; angular drill pipes typically use roller mandrels, while round drill pipes use slips. Because the roller mandrels and slips are installed differently on the rotary table, existing technology cannot use the same rotary table to perform the clamping and releasing actions for both types of drill pipes. This necessitates frequent rotary table changes by on-site operators, which is time-consuming, labor-intensive, and causes significant inconvenience to construction. Therefore, those skilled in the art urgently need to solve the above-mentioned technical problems. Utility Model Content

[0004] Some simplifications or omissions may be made in this section, as well as in the abstract and title of this application, but such simplifications or omissions shall not be used to limit the scope of this utility model.

[0005] The purpose of this utility model is to overcome the problems existing in the prior art and provide a hydraulic rotary table for pressurized overhaul operations, which can be adapted to different types of drill pipe operations, thereby improving the applicability and operating efficiency of the equipment.

[0006] To solve the above technical problems, the present invention provides a hydraulic turntable for pressurized overhaul operations, comprising: a base; two hydraulic motors mounted on the base, the hydraulic motors being arranged in two sets and located at opposite ends of the base; drive gears mounted on the output shafts of the corresponding hydraulic motors, with brakes connected to the ends facing away from the hydraulic motors; a slewing bearing, comprising a turntable and a large gear coaxially connected to the outer circumference of the turntable, the two sides of the large gear being connected to the corresponding drive gears via bridge gears; and a turntable with a turntable support platform at the center of its upper end face for connecting the lower flange of the slip, the center of the turntable support platform having a polygonal groove that matches the polygonal tenon at the lower end of the roller mandrel.

[0007] As an improvement to this utility model, the turntable bearing platform is provided with symmetrical turntable bolt holes on its circumference that match the bolt holes of the lower flange of the slip.

[0008] As a further improvement of this utility model, the outer edge of the upper end face of the turntable support is provided with a turntable protrusion ring, and the inner circumferential dimension of the turntable protrusion ring matches the outer circumferential dimension of the lower flange of the slip.

[0009] As a further improvement of this utility model, the turntable bolt holes are provided in two pairs symmetrically on both sides of the polygonal groove.

[0010] As a further improvement of this utility model, the outer periphery of the hydraulic motor, the drive gear and the slewing bearing is provided with a cover, and the turntable protrusion ring protrudes from the top wall of the cover.

[0011] As a further improvement of this utility model, notches are provided at both ends of the base, and a motor mounting base is installed above the notches. The hydraulic motor is placed inside the notches and fixed in the middle of the motor mounting base.

[0012] As a further improvement of this utility model, the bottom of the polygonal sink is provided with an inner flange protruding inward, and the inner flange is fixedly connected to the bottom of the polygonal tenon by screws.

[0013] As a further improvement of this utility model, the brake is mounted on the top of the cover, and the driving end of the brake extends into the cover and is connected to the driving gear.

[0014] As a further improvement of this utility model, the lower flange of the cover is fixed to the upper end face of the base by screws, and a top cover sealing ring is installed on the outer periphery of the turntable convex ring.

[0015] As a further improvement of this utility model, the large gear and the turntable are integrally formed, and the hydraulic motor is controlled by the hydraulic system.

[0016] Compared with the prior art, the present invention has achieved the following beneficial effects: 1. By precisely controlling the forward and reverse rotation of the hydraulic motor, the turntable can be rotated forward and backward, and with the precise braking of the brake, the safety and reliability of the operation are significantly improved.

[0017] 2. The unique polygonal groove and bolt hole design of the rotary table are cleverly adapted to the installation of roller inserts and slips, achieving a firm gripping of different types of drill pipes. This not only enhances the gripping capacity but also significantly improves the applicability and operating efficiency of the equipment, which is not available in existing technologies.

[0018] 3. The structure is simple and aesthetically pleasing, positioning is quick and convenient, and the equipment is stable, well-sealed, and well-lubricated. The large gear and turntable adopt an integrated molding structure, ensuring high assembly precision and reliability, improving the overall operating efficiency of the equipment, and extending its service life. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The drawings are provided for reference and illustration only and are not intended to limit this utility model. Wherein:

[0020] Figure 1 This is a schematic diagram of the roller manifold structure in this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the chuck in this utility model;

[0022] Figure 3 This is a schematic diagram of the hydraulic turntable for pressurized overhaul operations according to this utility model;

[0023] Figure 4 This is a cross-sectional view of the hydraulic turntable for pressurized overhaul operations according to this utility model;

[0024] Figure 5 This is a schematic diagram of the slewing bearing in this utility model;

[0025] Figure 6 This is a partial structural diagram of the hydraulic turntable for pressurized overhaul operations according to this utility model;

[0026] Figure 7 A diagram showing the state of the roller manifold after it has been installed on the hydraulic turntable;

[0027] Figure 8 This is a diagram showing the state of the slips after they have been installed on the hydraulic turntable.

[0028] In the diagram: 1. Base; 2. Hydraulic motor; 3. Drive gear; 4. Brake;

[0029] 5. Slewing bearing; 5a. Large gear; 5b. Turntable; 5b1. Turntable convex ring; 5b2. Turntable bearing platform; 5b3. Turntable bolt holes; 5b4. Polygonal countersink; 5b5. Countersink inner flange;

[0030] 6. Bridge gear; 7. Cover; 8. Top cover sealing ring; 9. Motor mounting base; 10. Roller insert; 10a. Polygonal tenon; 11. Slip; 11a. Lower flange of slip; 11b. Bolt hole of lower flange of slip. Detailed Implementation

[0031] In the following description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device must have a specific orientation.

[0032] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0034] like Figure 1 As shown, the roller mandrel 10 is used to clamp the square drill rod. The lower end of the roller mandrel 10 is provided with a polygonal tenon 10a, which is used to connect with the base and transmit torque.

[0035] like Figure 2 As shown, the slip 11 is used to clamp the round drill rod. The bottom of the slip 11 is provided with a slip lower flange 11a. Two pairs of slip lower flange bolt holes 11b are symmetrically provided on the slip lower flange 11a for connection with the base.

[0036] like Figures 3 to 8 As shown, the hydraulic rotary table for pressurized overhaul operations of this utility model includes a base 1, a hydraulic motor 2, a drive gear 3, a brake 4, a slewing bearing 5, and a bridge gear 6. Two sets of hydraulic motors 2 are provided, located at opposite ends of the base 1. The drive gear 3 is mounted on the upper end of the output shaft of the hydraulic motor 2, and the end of the drive gear 3 facing away from the hydraulic motor 2 is connected to the brake 4.

[0037] The slewing bearing 5 includes a large gear 5a and a turntable 5b. The large gear 5a is connected to the outer periphery of the turntable 5b and is coaxial. The two sides of the large gear 5a are respectively connected to two drive gears 3 through bridge gears 6. The two drive gears 3 jointly drive the turntable 5b to rotate through the bridge gears 6.

[0038] A turntable base 5b2 is provided at the center of the upper end face of the turntable 5b, which is used to connect with the lower flange 11a of the slip 11 during installation. Specifically, a turntable protruding ring 5b1 is provided on the outer edge of the upper end face of the turntable base 5b2. The inner circumferential dimension of the turntable protruding ring 5b1 matches the outer circumferential dimension of the lower flange 11a of the slip, which facilitates the insertion and automatic centering of the lower flange 11a of the slip. Turntable bolt holes 5b3, which match the bolt holes of the lower flange 11a of the slip, are symmetrically provided on the circumference of the turntable base 5b2, and two pairs of turntable bolt holes 5b3 are symmetrically provided on both sides of the polygonal groove 5b4.

[0039] The turntable bearing 5b2 has a polygonal countersunk groove 5b4 at its center, which matches the polygonal tenon 10a at the lower end of the roller insert 10. The polygonal tenon 10a at the lower end of the roller insert 10 is inserted into the polygonal countersunk groove 5b4 to transmit torque. The bottom of the polygonal countersunk groove 5b4 has an inwardly protruding inner flange 5b5, which has screw holes for fixing to the bottom of the polygonal tenon 10a with screws, thereby achieving axial positioning of the roller insert 10.

[0040] The working principle and beneficial effects of the above embodiments are as follows:

[0041] This utility model relates to a hydraulic turntable for pressurized overhaul operations. When the turntable 5b needs to rotate forward, the brake 4 is first operated to release the drive gear 3 from its locked state. The hydraulic motor 2 is then driven to rotate the drive gear 3 in the same direction as the turntable 5b. This rotation drives the bridge gear 6 to rotate while transmitting power to the large gear 5a, thus achieving the forward rotation function of the turntable 5b. When the turntable 5b needs to rotate in reverse, the hydraulic motor 2 is driven to rotate in the opposite direction, thereby driving the large gear 5a to rotate in the opposite direction.

[0042] When turntable 5b rotates forward or backward, it needs to be stalled. The drive brake 4 stops the drive gear 3, thus stopping the turntable 5b.

[0043] As shown in Figure 7, the polygonal tenon 10a at the lower end of the roller mandrel 10 is inserted into the polygonal groove 5b4 of the slewing bearing 5 and connected to the turntable to realize the clamping, releasing and driving operation of the drill rod.

[0044] As shown in Figure 8, the lower flange 11a of the slip 11 is fixed to the turntable through the turntable bolt hole 5b3, which completes the clamping, loosening and driving action of the round drill pipe. This design allows the turntable to flexibly adapt to different types of drill pipe operations.

[0045] This invention enables the turntable 5b to rotate in both directions by controlling the forward and reverse rotation of the hydraulic motor 2. The brake 4 can precisely control the stop of the turntable 5b, improving operational safety and reliability. The hydraulic turntable is designed with a polygonal groove 5b4 and turntable bolt holes 5b3, which allows the turntable 5b to firmly clamp different types of drill rods, enhancing clamping capacity and improving the applicability and operational efficiency of the equipment.

[0046] In one embodiment, a cover 7 is also included, which is mounted on the base 1 and covers the outer ends of the hydraulic motor 2, drive gear 3 and slewing bearing 5. This can prevent external impurities from entering, reduce the risk of wear and damage, and also protect the operator from injury from moving parts. The upper port of the turntable 5b protrudes from the upper surface of the cover 7 and is connected to a top cover sealing ring 8. The top cover sealing ring 8 achieves a seal between the two, adapting to harsh working environments.

[0047] In one embodiment, such as Figure 6 As shown, notches are provided at both ends of the base 1, and motor mounting bases 9 are installed on the notches. The hydraulic motor 2 is placed in the notches and fixed on the motor mounting bases 9 to ensure the stability and safety of the hydraulic motor 2 during operation. At the same time, the design of the motor mounting bases 9 and the notches makes the whole equipment look neater and more professional, which helps to improve the aesthetics of the equipment.

[0048] In one embodiment, the large gear 5a and the turntable 5b are configured as an integrally formed structure; the integral design can reduce errors caused by improper connection, thereby improving the stability and reliability of the entire slewing bearing 5.

[0049] In one embodiment, the brake 4 is mounted on the housing 7, and its drive end extends into the housing 7 to connect with the drive gear 3; the drive end of the brake 4 extends into the inside of the housing 7 and is directly connected to the drive gear 3, allowing the braking system to directly control the drive gear 3, thereby realizing its advantages of fast response and precise control.

[0050] In one embodiment, the contact surface between the cover 7 and the base 1 is provided with a flange, and the cover 7 is locked and fixed to the base 1 by bolts. The combination of flange and bolts can improve the stability of the connection between the cover 7 and the base 1 and reduce loosening caused by vibration or impact.

[0051] In one embodiment, the hydraulic motor 2 is connected to a hydraulic system to transmit its power.

[0052] In summary:

[0053] The hydraulic turntable for pressurized overhaul operations of this utility model can realize the forward and reverse rotation functions of the turntable through the forward and reverse rotation control of the hydraulic motor, and the brake can precisely control the stop of the turntable, thereby improving the safety and reliability of the operation.

[0054] The hydraulic turntable of this utility model is designed with a polygonal groove 5b4 and a turntable bolt hole 5b3, which enables the turntable to firmly clamp different types of drill rods, enhances the clamping capacity, and improves the applicability and operating efficiency of the equipment.

[0055] This utility model features a hydraulic rotary table for pressurized overhaul operations. It has a simple and aesthetically pleasing structure, good equipment stability and sealing. The large gear and rotary table are designed with an integrated molding structure, resulting in high assembly precision and reliability, improving the overall operating efficiency of the equipment and extending its service life.

[0056] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A hydraulic rotary table for pressurized overhaul operations, characterized in that, include: Base (1); A hydraulic motor (2) is mounted on the base (1). Two sets of the hydraulic motor (2) are provided and are located at both ends of the base (1). The drive gear (3) is mounted on the output shaft of the corresponding hydraulic motor (2), and the end opposite to the hydraulic motor (2) is connected to a brake (4). The slewing bearing (5) includes a turntable (5b) and a large gear (5a) coaxially connected to the outer periphery of the turntable (5b). The two sides of the large gear (5a) are respectively connected to the corresponding drive gears (3) through bridge gears (6). The turntable (5b) has a turntable base (5b2) at the center of its upper end face for connecting the lower flange (11a) of the slip. The turntable base (5b2) has a polygonal groove (5b4) at its center, which matches the polygonal tenon (10a) at the lower end of the roller filler (10).

2. The hydraulic rotary table for pressurized overhaul operations according to claim 1, characterized in that: The turntable base (5b2) is symmetrically provided with turntable bolt holes (5b3) that match the bolt holes of the lower flange (11a).

3. The hydraulic rotary table for pressurized overhaul operations according to claim 1, characterized in that: The upper end face of the turntable bearing platform (5b2) is provided with a turntable protrusion ring (5b1), and the inner circumferential dimension of the turntable protrusion ring (5b1) matches the outer circumferential dimension of the lower flange (11a).

4. The hydraulic rotary table for pressurized overhaul operations according to claim 2, characterized in that: The turntable bolt holes (5b3) are provided in two pairs symmetrically on both sides of the polygonal groove (5b4).

5. The hydraulic rotary table for pressurized overhaul operations according to claim 3, characterized in that: The hydraulic motor (2), drive gear (3) and slewing bearing (5) are all provided with a cover (7) on their outer periphery, and the turntable protrusion (5b1) protrudes from the top wall of the cover (7).

6. The hydraulic rotary table for pressurized overhaul operations according to claim 1, characterized in that: The base (1) has notches at both ends, and a motor mounting base (9) is installed above the notches. The hydraulic motor (2) is placed inside the notches and fixed in the middle of the motor mounting base (9).

7. The hydraulic rotary table for pressurized overhaul operations according to claim 1, characterized in that: The bottom of the polygonal sink (5b4) is provided with an inner flange (5b5) protruding inward, and the inner flange (5b5) is fixedly connected to the bottom of the polygonal tenon (10a) by screws.

8. The hydraulic rotary table for live overhaul operations according to claim 5, characterized in that: The brake (4) is mounted above the cover (7), and the driving end of the brake (4) extends into the cover (7) and is connected to the driving gear (3).

9. The hydraulic rotary table for pressurized overhaul operations according to claim 5, characterized in that: The lower flange of the cover (7) is fixed to the upper end face of the base (1) by screws, and a top cover sealing ring (8) is installed on the outer periphery of the turntable protrusion ring (5b1).

10. The hydraulic rotary table for pressurized overhaul operations according to claim 1, characterized in that: The large gear (5a) and the turntable (5b) are integrally formed structures, and the hydraulic motor (2) is controlled by the hydraulic system.

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