Pipe column conveying device for oil field

Abstract

The utility model discloses a tubular column conveying device for an oil field, and belongs to oil workover equipment. The catwalk comprises a base, a horizontal catwalk body and an inclined catwalk body, the horizontal catwalk body is horizontally arranged on the upper portion of the base in a telescopic mode, a small tackle capable of moving along the horizontal catwalk body is arranged on the horizontal catwalk body, a first clamp is arranged on the small tackle, and the first clamp is rotatably connected with the small tackle through a clamp swing shaft; clamp lifting frames are fixed to the upper portions of the two sides of the front end of the horizontal catwalk respectively, inclined faces are arranged on the rear sides of the clamp lifting frames, idler wheels capable of being matched with the inclined faces of the clamp lifting frames are arranged on the first clamp, a lifting mechanism is arranged on the front portion of the horizontal catwalk, the lifting mechanism is rotatably connected with the horizontal catwalk, and idler wheels are arranged at the front end of the lifting mechanism. The inclined catwalk is arranged on the upper portion of the front portion of the base, the rear end of the inclined catwalk is rotatably connected with the front portion of the base through a swing shaft, an inclined catwalk lifting swing arm is connected between the front end of the base and the inclined catwalk in a hinged mode, and a second clamp capable of moving along the inclined catwalk is arranged on the inclined catwalk.

Description

Technical Field

[0001] The utility model relates to an oilfield pipe string conveying device, in particular to an oilfield pipe string conveying device for ultra-high transportation, and belongs to the technical field of petroleum well repair equipment. Background Art

[0002] Currently, pipe conveyors used in oil drilling and well repair are all single-catwalk structures. This means that after the pipe is placed on the catwalk, it is directly transported to the required location on the drilling platform. This single-catwalk pipe conveyor is generally suitable for drilling platforms less than 7 meters in height. For drilling platforms taller than 7 meters, the greater height and weight of the pipe require a relatively fast lifting speed, limiting operational efficiency. Currently, conveyors for high-platform systems typically only deliver 20 to 30 pieces per hour, far from meeting the requirements of drilling and well repair operations. Utility Model Content

[0003] In view of the above-mentioned defects in the prior art, the utility model provides an oil field pipe string conveying device suitable for ultra-high conveying and with high conveying efficiency.

[0004] The utility model is realized through the following technical scheme: a pipe conveying device for oil fields, characterized in that it includes a base, a horizontal catwalk, and an inclined catwalk, the horizontal catwalk is telescopically arranged on the upper part of the base, a driving mechanism for driving the horizontal catwalk to be telescopic is provided on the base, a small pulley that can move along the horizontal catwalk is provided on the horizontal catwalk, the small pulley is connected to the driving mechanism for driving its movement, a first clamp is provided on the small pulley, the first clamp is rotatably connected to the small pulley through a clamp swing shaft, a clamp lifting frame is fixed to the upper part of both sides of the front end of the horizontal catwalk, and the clamp lifting frame The rear side of the catwalk has an inclined surface, and the first clamp is provided with a roller that can cooperate with the inclined surface of the clamp lifting frame. The front part of the horizontal catwalk is provided with a lifting mechanism, which is rotatably connected to the horizontal catwalk, and the front end of the lifting mechanism is provided with a roller, and the lifting mechanism is connected to a driving mechanism that drives it to rotate; the inclined catwalk is provided at the upper part of the front part of the base, and the rear end of the inclined catwalk is rotatably connected to the front part of the base through a swing shaft, and an inclined catwalk lifting swing arm is hingedly connected between the front end of the base and the inclined catwalk, and a lifting driving mechanism is connected between the inclined catwalk lifting swing arm and the base. A second clamp that can move along the inclined catwalk is provided, and the second clamp is connected to a driving mechanism that drives it to move; a clamping rod is provided on both sides of the upper part of the inclined catwalk, and the clamping rod is connected to the inclined catwalk through a swinging mechanism, and the swinging mechanism includes a plurality of swing arm mechanisms arranged at intervals along the inclined catwalk and a clamping driving mechanism, and the swing arm mechanism includes a clamping swing arm seat fixed on the inclined catwalk, a clamping driving swing arm with one end rotatably connected to the clamping swing arm seat, the other end of the clamping driving swing arm is hinged to the side of the clamping rod, and one end of the clamping driving mechanism is rotatably connected to the fixed seat fixed on the inclined catwalk The second clamp comprises a U-shaped clamp seat II and a rocker mechanism respectively arranged on both sides of the clamp seat II, the rocker mechanism comprising a swing block, two upper hinge shafts and two lower hinge shafts, the two lower hinge shafts are arranged in parallel at the inner bottom of the clamp seat II, the two upper hinge shafts are arranged in parallel on the swing block, the two ends of the rocker rod I and the two ends of the rocker rod II are respectively hinged to the corresponding upper hinge shafts and lower hinge shafts, the rocker rod I, the rocker rod II and the swing block form a parallelogram mechanism through the hinge shaft, and a roller that can contact the clamp rod is provided on the upper part of the swing block.

[0005] In the present invention, a small pulley and a first clamp provided on the horizontal catwalk can grip a pipe string for horizontal transport. The inclined catwalk can be used to tilt the pipe string to a work location or transfer it from the work location to the horizontal catwalk. A lifting mechanism provided at the front of the horizontal catwalk lifts the pipe string when it reaches the front of the horizontal catwalk, facilitating contact with the inclined catwalk as it continues forward. A second clamp provided on the inclined catwalk can grip the pipe string for transport. During normal operation, the inclined catwalk is tilted, and the lifting drive mechanism adjusts the angle of the inclined catwalk to accommodate the height of the drilling platform. When the second clamp is in operation, the clamping drive mechanism drives the clamping rod toward the center of the inclined catwalk, where it contacts the roller provided on the swing block of the second clamp. When the roller on the swing block is driven by external thrust toward the center of the catwalk, it drives the swing block, which in turn drives the connected parallelogram mechanism to swing about its lower hinge. When both sides swing simultaneously, the pipe string in the center of the clamp is clamped.

[0006] Furthermore, the front end of the inclined catwalk is a telescopic structure, and a telescopic drive mechanism is provided on the inclined catwalk to be connected to the telescopic end of the inclined catwalk. By setting the front end of the inclined catwalk as a telescopic structure, it can adapt to different heights of drilling platforms.

[0007] Furthermore, a third clamp is provided at the front end of the telescopic end of the inclined catwalk. The third clamp is used to clamp the pipe string to prevent the pipe string from tilting. The third clamp can hold the pipe string while not hindering the transportation of the pipe string during transportation.

[0008] Furthermore, the third clamp includes a clamp base III, two clamp rods, two gears, and a clamp cylinder. Clamp base III is provided with two parallel gear shafts. The two clamp rods are connected to the two gear shafts, and the two gears are provided on the two gear shafts and mesh with each other. One end of the clamp cylinder is hinged to one of the clamp rods, and the other end of the clamp cylinder is hinged to clamp base III. The clamp cylinder can drive one of the clamp rods to move, and the gear meshing transmission can drive the other clamp rod to move simultaneously, so that the two clamp rods can be closed or opened simultaneously.

[0009] Furthermore, the clamp rod includes a pendulum block and a clamp roller shaft, the pendulum block is connected to the gear shaft, the clamp roller shaft is detachably connected to the pendulum block, and the clamp roller is provided on the clamp roller shaft.

[0010] Furthermore, the driving mechanism for driving the second clamp to move is a chain transmission mechanism, the clamp seat II of the second clamp is connected to the chain of the chain transmission mechanism, and two second clamps are connected to the chain at intervals.

[0011] Furthermore, the driving mechanism for driving the horizontal catwalk to extend and retract includes a driving box fixed to the base, a hydraulic motor, and a driving chain. A driving sprocket and two steering sprockets respectively arranged on both sides of the driving sprocket are provided in the driving box. The output shaft of the hydraulic motor is connected to the driving sprocket, one end of the driving chain is connected to the rear end of the horizontal catwalk, and the other end of the driving chain is connected to the front part of the horizontal catwalk after bypassing the steering sprocket and the driving sprocket.

[0012] Furthermore, the driving mechanism for driving the trolley to move is a chain transmission mechanism.

[0013] Furthermore, the lifting mechanism includes a lifting swing arm and a swing arm lifting drive mechanism. The rear part of the lifting swing arm is rotatably connected to the horizontal catwalk through a lifting swing arm shaft arranged on the horizontal catwalk. One end of the swing arm lifting drive mechanism is hinged to the horizontal catwalk, and the other end of the swing arm lifting drive mechanism is hinged to the rear end of the lifting swing arm.

[0014] The beneficial effects of the present invention are as follows: the present invention uses a combination of a horizontal catwalk and an inclined catwalk to transport pipe strings. The horizontal catwalk pushes the pipe string until it aligns with the inclined catwalk, and the inclined catwalk transports the pipe string to the wellhead platform. The two catwalks can work in relay mode and alternately transport pipes, which can greatly improve the transportation efficiency and reach 40 to 50 pieces per hour. The utility model adopts a structural form of a combination of a horizontal catwalk and an inclined catwalk, which is particularly suitable for high-altitude drilling platforms, can achieve ultra-high transportation, reliable operation, high transportation efficiency, and high operational safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 yes Figure 1 Schematic top view of

[0017] Figure 3 yes Figure 1 A side view schematic diagram of

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the main view of the horizontal catwalk in the present utility model;

[0020] Figure 6 yes Figure 5 Schematic top view of

[0021] Figure 7 yes Figure 5 A side view schematic diagram of

[0022] Figure 8It is a schematic diagram of the three-dimensional structure of the horizontal catwalk in the present utility model;

[0023] Figure 9 This is a schematic diagram of the main view of the lifting mechanism part of the utility model;

[0024] Figure 10 yes Figure 9 Schematic top view of

[0025] Figure 11 yes Figure 9 AA cross-sectional view in FIG;

[0026] Figure 12 This is a schematic diagram of the lifting mechanism in the present invention in a lifted state;

[0027] Figure 13 It is a structural diagram of the telescopic drive mechanism of the horizontal catwalk in the present utility model;

[0028] Figure 14 yes Figure 13 BB cross-sectional view in FIG;

[0029] Figure 15 yes Figure 14 The CC cross-sectional view in FIG.

[0030] Figure 16 It is a structural diagram of the small pulley and the first clamp in the utility model;

[0031] Figure 17 yes Figure 16 Schematic top view of

[0032] Figure 18 yes Figure 16 A side view schematic diagram of

[0033] Figure 19 It is a schematic diagram of the three-dimensional structure of the small pulley and the first clamp in the utility model;

[0034] Figure 20 This is a schematic diagram of the main view of the inclined catwalk in the present invention;

[0035] Figure 21 yes Figure 20 Schematic top view of

[0036] Figure 22 yes Figure 20 A side view schematic diagram of

[0037] Figure 23 yes Figure 20 DD cross-sectional diagram in;

[0038] Figure 24 yes Figure 20An enlarged schematic diagram of part E in FIG;

[0039] Figure 25 yes Figure 21 An enlarged schematic diagram of part F in FIG.

[0040] Figure 26 yes Figure 21 An enlarged schematic diagram of the front end portion;

[0041] Figure 27 This is a schematic diagram of the three-dimensional structure of the second clamp in the present invention;

[0042] Figure 28 This is a schematic front view of the second clamp in the present invention;

[0043] Figure 29 yes Figure 28 Schematic top view of

[0044] Figure 30 yes Figure 29 The GG cross-sectional diagram in FIG;

[0045] Figure 31 This is a schematic diagram of the second clamp in the present invention when clamping;

[0046] Figure 32 This is a schematic front view of the third clamp in the present invention;

[0047] Figure 33 yes Figure 32 A side view schematic diagram of

[0048] Figure 34 yes Figure 33 HH cross-sectional view in FIG;

[0049] Figure 35 This is a schematic diagram of the small pulley in the present invention when it moves to the connecting position;

[0050] In the figure, 1, horizontal catwalk, 2, horizontal catwalk telescopic drive mechanism, 3, base, 4, lifting cylinder I, 5, inclined catwalk lifting swing arm, 6, inclined catwalk;

[0051] 1.1. Trolley, 1.2. First clamp, 1.3. Drive sprocket, 1.4. Chain, 1.5. Guide pulley assembly, 1.6. Driven sprocket, 1.7. Clamp lifting frame, 1.8. Lifting mechanism, 1.9. Telescopic beam, 1.10. Drive motor, 1.11. Sprocket box, 1.12. Catwalk trough;

[0052] 1.1.1, wheel, 1.2.1, clamp swing shaft, 1.2.2, roller;

[0053] 1.8.1. Lift oil cylinder II, 1.8.2. Connecting seat, 1.8.3. Lift swing arm, 1.8.4. Roller bracket, 1.8.5. Roller swing arm, 1.8.6. Roller, 1.8.7. Lift swing arm shaft, 1.8.8. Roller swing arm shaft;

[0054] 2.1. Drive chain, 2.2. Steering sprocket, 2.3. Active sprocket, 2.4. Steering sprocket, 2.5. Drive box, 2.6. Detection encoder, 2.7. Hydraulic motor;

[0055] 6.1, swing shaft, 6.2, inclined catwalk beam, 6.3, clamping rod, 6.4, clamping swing arm seat, 6.5, clamping cylinder, 6.6, front telescopic frame, 6.7, third clamp, 6.8, clamping drive swing arm, 6.9, telescopic drive cylinder, 6.10, driving sprocket, 6.11, driving motor, 6.12, chain, 6.13, driven sprocket, 6.14, second clamp, 6.15, roller, 6.16, clamping cylinder seat;

[0056] 6.7.1, Clamp cylinder, 6.7.2, Cylinder joint, 6.7.3, Gear, 6.7.4, Clamp roller shaft, 6.7.5, Clamp roller, 6.7.6, Gear shaft, 6.7.7, Swing block, 6.7.8, Clamp seat III;

[0057] 6.14.1. Roller, 6.14.2. First swing block, 6.14.3. Rocker I, 6.14.4. Return spring, 6.14.5. Tooth plate, 6.14.6. Clamp seat II, 6.14.7. Side pressure block, 6.14.8. Rocker II, 6.14.9. Second swing block, 6.14.10. Upper hinge shaft I, 6.14.11. Upper hinge shaft II, 6.14.12. Lower hinge shaft I, 6.14.13. Lower hinge shaft II. DETAILED DESCRIPTION

[0058] The present invention will be further described below by way of non-limiting embodiments and in conjunction with the accompanying drawings:

[0059] As attached Figure 1-Figure 4As shown, a tubular conveying device for oil fields includes a horizontal catwalk 1, a base 3, and an inclined catwalk 6. The base 3 is made of steel. The horizontal catwalk 1 is telescopically arranged horizontally on the upper part of the base 3, and a horizontal catwalk telescopic drive mechanism 2 is provided on the base 3 to drive the horizontal catwalk 1 to telescope. The inclined catwalk 6 is arranged on the upper part of the front part of the base 3, and the rear end of the inclined catwalk 6 is rotatably connected to the front part of the base 3 through a swing shaft. An inclined catwalk lifting swing arm 5 is hingedly connected between the front end of the base 3 and the inclined catwalk 6, and a lifting drive mechanism is connected between the inclined catwalk lifting swing arm 5 and the base 3, which can drive the inclined catwalk lifting swing arm 5 to rise and fall. The lifting drive mechanism used in this embodiment is a lifting cylinder Ⅰ4, and the two ends of the lifting cylinder Ⅰ4 are respectively hinged to the inclined catwalk lifting swing arm 5 and the base 3. In addition to using the lifting cylinder Ⅰ4, the lifting drive mechanism can also use other structural forms of lifting drive mechanisms in the prior art.

[0060] As attached Figure 5-Figure 8 As shown, the main body of the horizontal catwalk 1 includes a telescopic crossbeam 1.9 with a catwalk groove 1.12 in the middle of the telescopic crossbeam. A plurality of guide wheel assemblies 1.5 are provided on either side of the telescopic crossbeam 1.9. The guide wheel assemblies 1.5 cooperate with the slideways provided on the base 3, and the horizontal catwalk 1 is guided by the guide wheel assemblies 1.5 as it moves along the slideways on the base 3. A small trolley 1.1 is provided on the horizontal catwalk 1 for movement along the horizontal catwalk 1. The trolley 1.1 is provided with a first clamp 1.2 and is connected to a drive mechanism that drives its movement. In this embodiment, the drive mechanism that drives the trolley 1.1 is a chain transmission mechanism, which includes a drive motor 1.10 disposed at one end of the horizontal catwalk 1, a sprocket box 1.11, two drive sprockets 1.3, two driven sprockets 1.6 disposed at the other end of the horizontal catwalk 1, and two chains 1.4 respectively connected between the two sets of drive sprockets 1.3 and the driven sprockets 1.6. Two chains 1.4 are located on both sides of the small pulley, and the small pulley 1.1 is connected to the chains 1.4 on both sides. The chain transmission mechanism is driven by the drive motor 1.10 to drive the small pulley 1.1 to move on the horizontal catwalk 1. A clamp lifting frame 1.7 is fixed to the upper part of both sides of the front end of the horizontal catwalk 1, and the rear side of the clamp lifting frame 1.7 has an inclined surface. The clamp lifting frame 1.7 is used to cooperate with the first clamp 1.2 set on the small pulley 1.1 to lift the first clamp 1.2 so that the transported pipe column can cooperate with the inclined catwalk 6. A lifting mechanism 1.8 is provided at the front of the horizontal catwalk 1. The lifting mechanism 1.8 is rotatably connected to the horizontal catwalk 1, and the lifting mechanism 1.8 is connected to the driving mechanism that drives it to rotate. The lifting mechanism 1.8 is used to lift the pipe column through the lifting mechanism 1.8 when the pipe column is transported to the front of the horizontal catwalk, so that the pipe column can contact the inclined catwalk when it continues to move forward.

[0061] As attached Figures 9-12As shown, the lifting mechanism 1.8 includes a lifting arm 1.8.3 and a lifting cylinder II 1.8.1. The rear portion of the lifting arm 1.8.3 is rotatably connected to the horizontal catwalk 1 via a lifting arm shaft 1.8.7. The lifting arm shaft 1.8.7 is disposed at the lower portion of the horizontal catwalk 1 and connected to the telescopic crossbeam 1.9 of the horizontal catwalk 1. One end of the lifting cylinder II 1.8.1 is hinged to the telescopic crossbeam 1.9 of the horizontal catwalk 1, and the other end of the lifting cylinder II 1.8.1 is hinged to the rear end of the lifting arm 1.8.3 via a connecting seat 1.8.2. When the lifting cylinder II 1.8.1 is actuated, it drives the lifting arm 1.8.3 to rise or fall. The lifting arm 1.8.3 is a frame-shaped structure, and will not interfere with the horizontal catwalk when it is lifted. A roller 1.8.6 is provided at the front end of lifting arm 1.8.3. Roller 1.8.6 is connected to roller swing arm 1.8.5. One end of roller swing arm 1.8.5 is rotatably connected to roller bracket 1.8.4 via roller swing arm shaft 1.8.8. Roller bracket 1.8.4 is fixed to the front end of lifting arm shaft 1.8.7. When the lifting mechanism raises the pipe column, the pipe column is supported by roller 1.8.6. In the present utility model, the driving mechanism for lifting arm 1.8.3, in addition to using lifting cylinder II 1.8.1, may also adopt other conventional driving mechanisms, such as pneumatic cylinders, electric cylinders, etc.

[0062] As attached Figure 13-15 As shown, the telescopic drive mechanism 2 for the horizontal catwalk 1 includes a drive box 2.5, a hydraulic motor 2.7, and a drive chain 2.1. The drive box 2.5 is fixed to the base 3 and contains a driving sprocket 2.3, a steering sprocket 2.2, and a steering sprocket 2.4, respectively, located on either side of the driving sprocket 2.3. The output shaft of the hydraulic motor 2.7 is connected to the driving sprocket 2.3. One end of the drive chain 2.1 is connected to the rear end of the horizontal catwalk 1. The other end of the drive chain 2.1 passes through the steering sprocket 2.2, the driving sprocket 2.3, and the steering sprocket 2.4 in sequence before connecting to the front end of the horizontal catwalk 1. A detection encoder 2.6 is connected to the output shaft of the hydraulic motor 2.7. When the hydraulic motor 2.7 drives the driving sprocket 2.3 to rotate, the horizontal catwalk 1 is moved via the drive chain 2.1, thereby achieving telescopic movement of the horizontal catwalk 1.

[0063] As attached Figure 16-Figure 19As shown, a first clamp 1.2 is provided on the trolley 1.1. Wheels 1.1.1 are provided on either side of the trolley 1.1. When the trolley 1.1 moves, the wheels 1.1.1 on either side engage with the horizontal catwalk 1. The clamping structure of the first clamp 1.2 is conventional, and is driven by a hydraulic cylinder. The first clamp 1.2 is connected to the trolley 1.1 via a clamp swing shaft 1.2.1, about which the first clamp 1.2 can rotate. A roller 1.2.2 is provided on each side of the first clamp 1.2.2, connected to the first clamp 1.2 via a roller shaft. These two rollers 1.2.2 engage with a clamp lifting frame 1.7. When the trolley 1.1 reaches the clamp lifting frame 1.7, the two rollers 1.2.2 of the first clamp 1.2 can move along the inclined surface of the clamp lifting frame 1.7, thereby lifting the first clamp 1.2. Its raised state is as shown in the attached Figure 35 shown.

[0064] As attached Figure 20-34As shown, the main body of the inclined catwalk 6 is an inclined catwalk beam 6.2, the rear end of which is rotatably connected to the front portion of the base 3 via a swing shaft 6.1. The inclined catwalk 6 is provided with a second clamp 6.14 that can move along the inclined catwalk 6, and the second clamp 6.14 is connected to a drive mechanism that drives its movement. In this embodiment, the front end of the inclined catwalk 6 is configured as a telescopic structure, that is, a telescopic front telescopic frame 6.6 is provided at the front end of the inclined catwalk 6. The front telescopic frame 6.6 is movably engaged with the front end of the inclined catwalk beam 6.2. The inclined catwalk beam 6.2 is provided with two telescopic drive cylinders 6.9, respectively connected to the two sides of the front telescopic frame 6.6. The telescopic drive cylinders 6.9 can drive the front telescopic frame 6.6 to extend and retract. Of course, the drive mechanism that drives the front telescopic frame 6.6 to extend and retract is not limited to the telescopic drive cylinder 6.9, and can also adopt other drive structures such as cylinders and electric cylinders in the prior art. To ensure that the pipe string does not tilt, a third clamp 6.7 is preferably provided at the front end of the front telescopic frame 6.6. The drive mechanism for driving the second clamp 6.14 can be any of the various drive mechanisms known in the art. In this embodiment, the drive mechanism for driving the second clamp 6.14 is a chain transmission mechanism comprising a driving sprocket 6.10, a drive motor 6.11, a chain 6.12, and a driven sprocket 6.13. The driving sprocket 6.10 and the drive motor 6.11 are disposed at the rear end of the inclined catwalk beam 6.2, and the driven sprocket 6.13 is disposed at the front end of the inclined catwalk beam 6.2. The chain 6.12 is connected between the driving sprocket 6.10 and the driven sprocket 6.13 to form an endless chain. The second clamp 6.14 is connected to the chain 6.12. To improve operational efficiency, two second clamps 6.14 are spaced apart and connected to the chain 6.12. The two second clamps 6.14 can operate alternately. The structure of the second clamp 6.14 can adopt various clamp structures that can be used to clamp the pipe column for transportation in the prior art. The structure adopted in this embodiment is: the second clamp 6.14 includes a U-shaped clamp seat II 6.14.6, and a rocker mechanism respectively arranged on both sides of the clamp seat II 6.14.6. The clamp seat II 6.14.6 is connected to the chain 6.12 through a connecting block. A tooth plate 6.14.5 is provided on the bottom inner side of the clamp seat II 6.14.6. The rocker mechanism on each side includes a swing block, two upper The hinge shaft, two lower hinge shafts, pendulum rod I 6.14.3, and pendulum rod II 6.14.8 are arranged parallel to each other on the inner bottom of clamp base II 6.14.6. The two upper hinge shafts are arranged parallel to each other on the swing block. The ends of pendulum rod I 6.14.3 and the ends of pendulum rod II 6.14.8 are hinged to the corresponding upper and lower hinge shafts, respectively. Pendulum rod I 6.14.3, pendulum rod II 6.14.8, and the swing block form a parallelogram mechanism through the hinge shafts. Rollers 6.14.1 are installed on the upper part of the swing block. When pushed by an external force, rollers 6.14.1 can move the swing block, causing the connected parallelogram mechanism to swing around the lower hinge shaft. When the pendulum rod mechanisms on both sides swing simultaneously, the pipe column in the center of the clamp can be clamped.In order to ensure the return of the swing mechanism, a return spring 6.14.4 is provided on the swing mechanism. In this embodiment, the rocker mechanisms on both sides of the clamp seat II 6.14.6 are staggered, and the rocker mechanism on one side includes a first swing block 6.14.2, an upper hinge shaft I 6.14.10 and an upper hinge shaft II 6.14.11 arranged parallel to the first swing block 6.14.2, a lower hinge shaft I 6.14.12 and a lower hinge shaft II 6.14.13 arranged parallel to the inner bottom of the clamp seat II 6.14.6, and the lower hinge shaft I 6.14.12 and the lower hinge shaft II 6.14.13 are connected to the clamp seat II 6.14.6 through an axis hole seat provided on the clamp seat II 6.14.6. The upper part of the first swing block 6.14.2 is provided with a Roller 6.14.1, a set of rocker rods Ⅰ 6.14.3 and rocker rods Ⅱ 6.14.8 are provided on both sides of the first swing block 6.14.2, and the rocker rods Ⅰ 6.14.3 and rocker rods Ⅱ 6.14.8 on both sides are respectively connected with the corresponding upper hinge shaft Ⅰ 6.14.10, upper hinge shaft Ⅱ 6.14.11, lower hinge shaft Ⅰ 6.14.12, lower hinge shaft Ⅱ 6.14.13. The rocker rod Ⅱ 6.14.8 is located on the inner side, and the inner side of the rocker rod Ⅱ 6.14.8 is fixed with a side pressure block 6.14.7. The side pressure block is a high hardness and wear-resistant part. It can drive the rocker mechanism on both sides to move simultaneously through the first swing block 6.14.2. The other side has two rocker mechanisms spaced apart. Their structure is essentially the same as the previous rocker mechanism, with the difference being that rocker I 6.14.3 and rocker II 6.14.8 are located on either side of the second rocking block 6.14.9, and the upper hinge connected to the upper end of rocker II 6.14.8 is a short axis. Both second rocking blocks 6.14.9 are equipped with rollers 6.14.1. Cooperating with the second clamp 6.14 to realize the clamping action are two clamping rods 6.3 arranged on both sides of the upper part of the inclined catwalk 6. The clamping rods 6.3 are arranged parallel to the inclined catwalk. The clamping rods 6.3 are connected to the inclined catwalk 6 through a swinging mechanism. The swinging mechanism includes a plurality of swing arm mechanisms and a clamping cylinder 6.5 arranged at intervals along the inclined catwalk 6. The swing arm mechanism includes a clamping swing arm seat 6.4 fixed on the inclined catwalk 6, a clamping drive swing arm 6.8 with one end rotatably connected to the clamping swing arm seat 6.4, the other end of the clamping drive swing arm 6.8 is hinged to the side of the clamping rod 6.3, one end of the clamping cylinder 6.5 is rotatably connected to the clamping cylinder seat 6.16 fixed on the inclined catwalk 6, and the other end of the clamping cylinder 6.5 is hinged to the side of the clamping rod 6.3. When the piston rod of the clamping cylinder 6.5 is extended or retracted, the clamping rod 6.3 is driven to swing. When the clamping rod 6.3 swings toward the center of the inclined catwalk, it contacts the roller 6.14.1 provided on the rocker mechanism of the second clamp 6.14. The roller 6.14.1 is moved toward the center of the inclined catwalk by the external thrust, thereby driving the rocker mechanism to swing toward the center. The clamping cylinders 6.5 on both sides are actuated at the same time, and the rocker mechanisms on both sides of the second clamp 6.14 swing at the same time, so that the pipe column in the middle of the clamps can be clamped.In the present invention, the clamping drive mechanism that drives the clamping rod is not limited to the aforementioned clamping cylinder; other drive mechanisms such as pneumatic cylinders and electric cylinders known in the prior art may also be employed. The structure of the third clamp 6.7 in the present invention may employ various prior art structures for clamping pipe columns. In this embodiment, the third clamp 6.7 comprises a clamp base III 6.7.8, two clamping rods, two gears 6.7.3, and a clamping cylinder 6.7.1. The clamp base III 6.7.8 is provided with two parallel gear shafts 6.7.6. The two clamping rods are respectively connected to the two gear shafts 6.7.6. The two gears 6.7.3 are respectively provided on the two gear shafts 6.7.6 and mesh with each other. One end of the clamping cylinder 6.7.1 is hingedly connected to one of the clamping rods via a cylinder joint 6.7.2, and the other end of the clamping cylinder 6.7.1 is hingedly connected to the clamp base III 6.7.8. When the clamp cylinder 6.7.1 is actuated, it drives one of the clamp rods to rotate, which, through gear meshing, drives the other clamp rod to actuate simultaneously, thereby clamping or releasing the two clamp rods. Preferably, the clamp rod includes a pendulum block 6.7.7 and a clamp roller shaft 6.7.4. The pendulum block 6.7.7 is connected to the gear shaft 6.7.6. The clamp roller shaft 6.7.4 is detachably connected to the pendulum block 6.7.7. A clamp roller 6.7.5 is provided on the clamp roller shaft 6.7.7. To accommodate the third clamp 6.7, a roller 6.15 is further provided at the front end of the front telescopic frame 6.6. The roller 6.15 is located at the rear of the front telescopic frame 6.6, corresponding to the third clamp 6.7.

[0065] During operation, the inclined catwalk 6 is tilted, typically at a 60° angle. The tilt angle of the inclined catwalk 6 can be adjusted by raising the oil cylinder 14. During operation, the horizontal catwalk 1 pushes the pipe string until it aligns with the inclined catwalk 6, which then pushes the pipe string to the wellhead platform. The two catwalks work in relay mode. After the inclined catwalk 6 takes over, the horizontal catwalk 1 returns to its set position, loads another pipe string, and waits for the pipe string on the inclined catwalk to be removed before pushing the pipe upward again. The two catwalks alternately deliver pipe, improving delivery efficiency to 40 to 50 pieces per hour.

[0066] The specific action flow is as follows:

[0067] The process of lowering the pipe (delivering the pipe string to the drilling floor) is as follows:

[0068] After the equipment is put in place, the inclined catwalk 6 is lifted, and the horizontal catwalk 1 reaches the set pipe-releasing position, where the horizontal catwalk 1 has three positions, namely the transport position, the connecting position, and the pipe-releasing position. After initialization is completed, the horizontal catwalk retreats to the pipe-releasing position. In the pipe-lowering mode, after the pipe string is placed in the first clamp 1.2 on the small pulley 1.1, the first clamp 1.2 clamps the pipe string and moves forward. When the front end of the pipe string triggers the front switch, the lifting mechanism is lifted to lift the front end of the pipe string to a certain height. The small pulley 1.1 continues to move forward, and the front end of the pipe string contacts the inclined catwalk 6. Under the thrust of the small pulley 1.1, the pipe string moves obliquely upward. When the distance between the small pulley 1.1 and the lifting mechanism 1.8 is less than the set distance (about 1000mm), the small pulley 1.1 stops and the lifting mechanism 1.8 falls (to prevent interference). Horizontal catwalk 1 moves forward to the pipe connection position (controlled by encoder data). Trolley 1.1 continues forward to its front end and stops at the raised inclined surface of clamp lifting frame 1.7 (controlled by travel switch). The first clamp 1.2 is raised by the cooperation of roller 1.2.2 and clamp lifting frame 1.7. The oil pipe is now aligned with inclined catwalk 6. The clamping rod 6.3 on inclined catwalk 6 closes, pressing the second clamp 6.14 at the lower end of the inclined catwalk together to clamp the pipe string. At this point, the first clamp 1.2 on trolley 1.1 of horizontal catwalk 1 opens. Based on the oil pipe length and conveying height data, the second clamp 6.14 on the inclined catwalk moves upward. When the second clamp 6.14 rises the set distance (1000mm), the horizontal catwalk returns to the pipe release position, and trolley 1.1 returns to the set position. When the front end of the pipe string on inclined catwalk 6 extends out of the third clamp 6.7 at the front end of the inclined catwalk, the third clamp 6.7 clamps the pipe string to prevent it from tilting. When the tubing string reaches its designated position, the second clamp stops, waiting for the pipe retrieval robot to remove it. Once the robot secures the tubing, the clamping rod 6.3 and third clamp 6.7 on the catwalk 6 release, releasing the tubing string. After the tubing string is removed, the catwalk's drive motor continues to rotate, driving the second clamp 6.14 to its standby position at the lower end of the catwalk. This process repeats, continuously delivering tubing strings to the drill floor.

[0069] Pipe lifting (transporting oil pipe to the surface) action process:

[0070] After the equipment is in place, the inclined catwalk 6 is lifted, and the horizontal catwalk 1 reaches the takeover position. In the pipe lifting mode, the small pulley 1.1 of the horizontal catwalk 1 reaches the front lifting position, the first clamp 1.2 is lifted and opened, the second clamp 6.14 on the inclined catwalk 6 opens and reaches the frontmost waiting position, and the third clamp 6.7 opens. After the manipulator places the pipe string into the inclined catwalk, the clamping rod 6.3 on the inclined catwalk 6 closes, pushing the second clamp 6.14 to clamp the pipe string. The third clamp 6.7 at the front end of the inclined catwalk closes, and after clamping, the manipulator releases it. The second clamp 6.14 moves downward, and when the lower end of the pipe string contacts the first clamp 1.2 on the small pulley on the horizontal catwalk 1, it stops descending. The first clamp 1.2 on the horizontal catwalk is clamped. The second clamp on the inclined catwalk is released, the horizontal catwalk 1 retreats to the pipe release position, the small pulley 1.1 retreats to the set position, and after the pipe string is removed, the horizontal catwalk 1 extends to the pipe connection position, and the small pulley 1.1 returns to the front end raised position, waiting for the pipe connection, and the cycle continues.

[0071] The other parts in this embodiment are all existing technologies and will not be described in detail here.

Claims

1. A tubular conveying device for oil fields, characterized by: The invention comprises a base (3), a horizontal catwalk (1), and an inclined catwalk (6). The horizontal catwalk (1) is horizontally arranged on the upper part of the base (3) in a telescopic manner. A driving mechanism for driving the horizontal catwalk (1) to be telescopic is arranged on the base (3). A small pulley (1.1) that can move along the horizontal catwalk (1) is arranged on the horizontal catwalk (1). The small pulley (1.1) is connected to the driving mechanism for driving the horizontal catwalk (1) to move. A first clamp (1.2) is arranged on the small pulley (1.1). The first clamp (1.2) is rotatably connected to the small pulley (1.1) through a clamp swing shaft (1.2.1). Clamp lifting frames (1.7) are respectively fixed to the upper parts of both sides of the front end of the horizontal catwalk (1). The rear side of the clamp lifting frame (1.7) has an inclined surface. The first clamp (1.2) is provided with a first clamp (1.2). A roller is provided that can cooperate with the inclined surface of the clamp lifting frame (1.7); a lifting mechanism (1.8) is provided at the front of the horizontal catwalk (1); the lifting mechanism (1.8) is rotatably connected to the horizontal catwalk (1); a roller is provided at the front end of the lifting mechanism (1.8); the lifting mechanism (1.8) is connected to a driving mechanism that drives it to rotate; the inclined catwalk (6) is provided at the upper part of the front of the base (3); the rear end of the inclined catwalk (6) is rotatably connected to the front of the base (3) through a swing shaft; an inclined catwalk lifting swing arm (5) is hingedly connected between the front end of the base (3) and the inclined catwalk (6); a lifting driving mechanism is connected between the inclined catwalk lifting swing arm (5) and the base (3); a second clamp that can move along the inclined catwalk is provided on the inclined catwalk (6). The first clamp (6.14) and the second clamp (6.14) are connected to a driving mechanism that drives the clamp to move; a clamping rod (6.3) is provided on both sides of the upper part of the inclined catwalk (6), and the clamping rod (6.3) is connected to the inclined catwalk (6) through a swinging mechanism. The swinging mechanism includes a plurality of swing arm mechanisms and a clamping driving mechanism arranged at intervals along the inclined catwalk (6). The swing arm mechanism includes a clamping swing arm seat (6.4) fixed on the inclined catwalk (6), a clamping driving swing arm (6.8) with one end rotatably connected to the clamping swing arm seat (6.4), the other end of the clamping driving swing arm (6.8) is hinged to the side of the clamping rod (6.3), one end of the clamping driving mechanism is rotatably connected to the fixed seat fixed on the inclined catwalk (6), and the other end of the clamping driving mechanism is hinged to the side of the clamping rod (6.3), one end of the clamping driving mechanism is rotatably connected to the fixed seat fixed on the inclined catwalk (6), and the other end of the clamping driving mechanism is hinged to the side of the clamping rod (6.3), one end of the clamping driving mechanism is rotatably connected to the fixed seat fixed on the inclined catwalk (6), and the other end of the clamping driving mechanism is hinged to the side of the clamping rod (6.3), and the other end of the clamping driving mechanism is hinged to the fixed seat fixed on the inclined catwalk (6). The end is hinged to the side of the clamping rod (6.3); the second clamp (6.14) includes a U-shaped clamp seat II (6.14.6) and a rocker mechanism respectively arranged on both sides of the clamp seat II (6.14.6), the rocker mechanism includes a swing block, two upper hinge shafts, and two lower hinge shafts, the two lower hinge shafts are arranged in parallel at the inner bottom of the clamp seat II (6.14.6), and the two upper hinge shafts are arranged in parallel on the swing block, the two ends of the rocker I (6.14.3) and the two ends of the rocker II (6.14.8) are respectively hinged to the corresponding upper hinge shafts and lower hinge shafts, the rocker I (6.14.3), the rocker II (6.14.8) and the swing block form a parallelogram mechanism through the hinge shaft, and a roller that can contact the clamping rod (6.3) is arranged on the upper part of the swing block.

2. The oilfield pipe conveying device according to claim 1, characterized in that: The front end of the inclined catwalk (6) is a telescopic structure, and a telescopic driving mechanism is provided on the inclined catwalk (6) and is connected to the telescopic end of the inclined catwalk (6).

3. The oilfield pipe conveying device according to claim 2, characterized in that: A third clamp (6.7) is provided at the front end of the telescopic end of the inclined catwalk (6).

4. The oilfield pipe conveying device according to claim 3, characterized in that: The third clamp (6.7) includes a clamp seat III (6.7.8), two clamp rods, two gears, and a clamp cylinder (6.7.1). The clamp seat III (6.7.8) is provided with two parallel gear shafts, the two clamp rods are respectively connected to the two gear shafts, the two gears are respectively provided on the two gear shafts and mesh with each other, one end of the clamp cylinder (6.7.1) is hinged to one of the clamp rods, and the other end of the clamp cylinder (6.7.1) is hinged to the clamp seat III (6.7.8).

5. The oilfield pipe conveying device according to claim 4, characterized in that: The clamp rod comprises a pendulum block (6.7.7) and a clamp roller shaft (6.7.4), the pendulum block (6.7.7) is connected to the gear shaft, the clamp roller shaft (6.7.4) is detachably connected to the pendulum block (6.7.7), and a clamp roller (6.7.5) is provided on the clamp roller shaft (6.7.7).

6. The oilfield pipe conveying device according to claim 1, characterized in that: The driving mechanism for driving the second clamp (6.14) to move is a chain transmission mechanism, the clamp seat II (6.14.6) of the second clamp (6.14) is connected to the chain of the chain transmission mechanism, and two second clamps (6.14) are connected to the chain at intervals.

7. The oilfield tubing conveying device according to claim 1, 2, 3, 4, 5 or 6, characterized in that: The driving mechanism for driving the horizontal catwalk (1) to extend and retract comprises a driving box (2.5) fixed on a base (3), a hydraulic motor (2.7), and a driving chain (2.1). A driving sprocket and two steering sprockets respectively arranged on both sides of the driving sprocket are arranged in the driving box (2.5). The output shaft of the hydraulic motor is connected to the driving sprocket. One end of the driving chain (2.1) is connected to the rear end of the horizontal catwalk (1). The other end of the driving chain (2.1) is connected to the front part of the horizontal catwalk (1) after passing around the steering sprocket and the driving sprocket.

8. The oilfield pipe conveying device according to claim 7, characterized in that: The driving mechanism for driving the small pulley (1.1) to move is a chain transmission mechanism.

9. The oilfield pipe conveying device according to claim 7, characterized in that: The lifting mechanism (1.8) comprises a lifting swing arm (1.8.3) and a swing arm lifting drive mechanism. The rear portion of the lifting swing arm (1.8.3) is rotatably connected to the horizontal catwalk (1) via a lifting swing arm shaft (1.8.7) provided on the horizontal catwalk (1). One end of the swing arm lifting drive mechanism is hinged to the horizontal catwalk (1), and the other end of the swing arm lifting drive mechanism is hinged to the rear end of the lifting swing arm (1.8.3).

Images