A power catwalk that can adapt to various drilling table heights

Abstract

The present invention discloses a power catwalk that can adapt to various drilling table heights, including a base, a conveying ramp, a lifting arm, and a first drive unit. The conveying ramp is used to support a workpiece and is connected to the base via the lifting arm. The lifting arm includes a first movable arm and a joint component. The first movable arm includes a first main arm and a second main arm. The first ends of the first main arm and the second main arm are both hinged to the base. The joint component includes a connecting plate and a pull rod. The connecting plate is hinged to the first main arm and the second main arm respectively to form a parallel four-bar linkage mechanism. The first end of the pull rod is hinged to the connecting plate, and the second end of the pull rod is hinged to the conveying ramp. The end of the first movable arm extends axially and is hinged to the conveying ramp. The first drive unit is provided on the power catwalk and is used to control the opening and closing angle between the first movable arm and the conveying ramp to lift or lower the conveying ramp. The present invention has a reasonable structure, a large lifting height range, a compact size, and good structural stability.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum machinery, in particular to a power catwalk which can adapt to various drilling floor heights. Background Art

[0002] At present, it has become a trend to use power catwalks to automatically transport drill pipes, drill collars, casings, oil pipes and other workpieces during drilling and well repair. However, due to the difference in oil well depths, the drill floor heights of drilling rigs and well repair rigs are different. Due to the limitations of structural form and transportation length, conventional power catwalks are often complex in structure and can only adapt to a certain range of drill floor heights, which limits the applicability of power catwalks. For example, as shown in the patent document with application number CN201610601763.0, entitled "A Well Repair Operation Automation Device", the lifting range of the lifting rod is limited and the catwalk cannot adapt to a wider range of drill floor heights. Therefore, there is an urgent need for a power catwalk with a reasonable structure that can adapt to a larger range of drill floor heights. Summary of the Invention

[0003] The present invention discloses a power catwalk that can adapt to various drilling floor heights. It solves the technical problem of the limited range of applicable drilling floor heights in the prior art and has the technical effects of a reasonable structure, a wide range of lifting heights, a compact size, and good structural stability. The technical solution adopted is as follows:

[0004] The lifting mechanism is a lifting mechanism that is configured to lift and lower the lifting platform and the lifting mechanism into a new state. The lifting mechanism comprises a lifting mechanism, wherein the lifting mechanism comprises a first movable arm and a joint component, the first movable arm comprises a first main arm and a second main arm, the first ends of the first main arm and the second main arm are both hinged to the base, the joint component comprises a connecting plate and a pull rod, and the connecting plate is provided with a first hinge position, a second hinge position and a third hinge position arranged in a triangle. The connecting plate is hinged to the first main arm and the second main arm at the first hinge position and the second hinge position respectively to form a parallel four-bar linkage mechanism, the first end of the pull rod is hinged to the connecting plate at the third hinge, the second end of the pull rod is hinged to the conveying ramp, the end of the first movable arm extends axially and is hinged to the conveying ramp; the first driving unit is arranged on the power catwalk and is used to control the opening and closing angle of the first movable arm and the conveying ramp to lift or lower the conveying ramp to adapt to various drilling platform heights.

[0005] Based on the above technical solution, there are two lifting arms and they are symmetrically arranged on both sides of the axis of the conveying ramp; the first driving unit is hinged to the first movable arm, and the piston rod end of the first driving unit is hinged to the conveying ramp to drive the first movable arm and the conveying ramp to open and close.

[0006] On the basis of the above technical solution, it also includes a first stabilizing arm, which includes a first stabilizing link and a second stabilizing link. The first end of the first stabilizing link is hinged to the base, the second end of the first stabilizing link is hinged to the first end of the second stabilizing link, and the second end of the second stabilizing link is hinged upward to the conveying ramp to prevent the conveying ramp from swinging sideways, and the first stabilizing link and the second stabilizing link can be folded and stored between the two first movable arms.

[0007] Based on the above technical solution, it also includes a second stabilizing arm, the first end of which is slidably connected to the base, and the second end of the second stabilizing arm is upwardly hinged to the first movable arm or the conveying ramp to prevent the conveying ramp from swinging sideways.

[0008] On the basis of the above technical solution, the connecting plate is a triangular plate, and the first hinge position, the second hinge position and the third hinge position are respectively arranged on the triangles of the triangular plate.

[0009] On the basis of the above technical solution, it also includes a moving seat and a second driving unit. The moving seat is slidably arranged on the conveying ramp. The second driving unit is arranged on the conveying ramp and can drive the moving seat to slide axially along the conveying ramp.

[0010] On the basis of the above technical solution, it also includes a pulley, a V-shaped groove extending axially along the conveying ramp and a third driving unit. The V-shaped groove is arranged on the movable seat with the opening facing upward, for supporting the workpiece, and the V-shaped groove passes through the pulley and is slidably connected to the pulley. The pulley is slidably arranged on the movable seat and can slide axially along the V-shaped groove under the action of the third driving unit to push the workpiece to slide.

[0011] On the basis of the above technical solution, it also includes a fourth driving unit, the pulley includes a slide and a saddle, the slide is axially slidably arranged on the movable seat and can slide under the action of the third driving unit, the saddle is hinged to the slide, and a V-shaped hole is provided on the saddle for the V-shaped groove to pass through, the V-shaped groove is hinged to the movable seat and can swing left and right under the action of the fourth driving unit to facilitate the picking and placing of workpieces.

[0012] Based on the above technical solution, the fourth drive unit is any one of a pneumatic cylinder, an oil cylinder or an electric push rod, the fourth drive unit is hinged on the moving seat, and the piston rod end of the fourth drive unit is hinged to the bottom of the V-shaped groove.

[0013] Based on the above technical solution, the central axes of the V-shaped groove, the movable seat, the conveying ramp, the lifting arm and the base are coplanar.

[0014] Beneficial effects

[0015] The present invention has a reasonable structure. The conveying ramp is connected to the base through a lifting arm. The first driving unit lifts or lowers the conveying ramp by controlling the degree of opening and closing of the lifting arm and the conveying ramp. This can be applied to a wider range of drilling platform heights. In addition, the first driving unit is hinged to the first movable arm, and the piston rod end of the first driving unit is hinged to the conveying ramp. The first driving unit can control the opening and closing angle of the lifting arm and the conveying ramp more stably and efficiently, has good operating stability, and a fast operating speed, which is conducive to achieving efficient operation.

[0016] The lifting arm in the present invention includes a first movable arm and a joint part, wherein the linkage mechanism formed by the first movable arm and the joint part has a simple structure and low manufacturing cost. In addition, the formed linkage mechanism has a compact structure and can be folded for easy storage and transportation.

[0017] In the present invention, the movable seat can slide under the action of the second driving unit to transport the workpiece in the V-shaped groove forward. In addition, the pulley can slide under the action of the third driving unit to continue pushing the workpiece forward. The design is reasonable, the structure is compact, and it has a large pushing stroke for the workpiece, which can further improve the applicability to higher drilling tables; in addition, the fourth driving unit can drive the V-shaped groove to swing left and right, and unloading can be conveniently achieved by flipping the V-groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only one embodiment of the present invention. Those skilled in the art can also derive other implementation drawings based on the provided drawings without inventive effort.

[0019] Figure 1 :The use status of the present invention is shown Figure 1 ;

[0020] Figure 2 :The use status of the present invention is shown Figure 2 ;

[0021] Figure 3 : Schematic diagram of the three-dimensional structure of the conveying ramp in the present invention;

[0022] Figure 4 : A schematic diagram of the three-dimensional structure of the mobile seat in the present invention;

[0023] Figure 5 : A schematic diagram of the three-dimensional structure of the pulley in the present invention;

[0024] Figure 6 : Schematic diagram of the three-dimensional structure of the V-shaped groove in the present invention;

[0025] Figure 7: Schematic diagram of the structure in which the lifting arm lifts the conveying ramp to different heights; DETAILED DESCRIPTION

[0026] The following description and accompanying drawings sufficiently illustrate the specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for portions and features of other embodiments. The scope of the embodiments herein includes the entire scope of the claims, including all available equivalents thereof. Herein, the terms "first," "second," and the like are used solely to distinguish one element from another and do not require or imply any actual relationship or order between these elements. In practice, the first element can also be referred to as the second element, and vice versa. Furthermore, the terms "comprise," "comprising," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a structure, device, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such structure, device, or apparatus. Without further limitation, an element defined by the phrase "comprising a..." does not preclude the presence of other identical elements in the structure, device, or apparatus comprising the element. The various embodiments herein are described in a progressive manner, with each embodiment focusing on its differences from the other embodiments. Similar or identical parts between the various embodiments can be referenced to each other.

[0027] The terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used herein to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are intended only to facilitate the description of this document and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In the description herein, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, they can be mechanical or electrical connections, or they can be internal connections between two elements, they can be directly connected, or they can be indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0028] As used herein, unless otherwise specified, the term "plurality" means two or more.

[0029] In this document, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0030] In this article, the term "and / or" is used to describe the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0031] The power catwalk is set up close to the drilling table, such as Figure 1 As shown, a wellhead is provided on the drilling floor.

[0032] like Figures 1 to 7 The power catwalk shown can adapt to various drilling table heights, including a base 1, a conveying ramp 2, a lifting arm 3 and a first drive unit 4. In this embodiment, the base 1 is a frame structure, provided with a cavity that can accommodate the conveying ramp 2, the lifting arm 3 and the first drive unit 4. The conveying ramp 2 is used to support the workpiece and is connected to the base 1 through the lifting arm 3.

[0033] like Figure 2 As shown, the lifting arm 3 includes a first movable arm 31 and a joint member 32. The first movable arm 31 includes a first main arm 311 and a second main arm 312. The first ends of the first main arm 311 and the second main arm 312 are both hinged to the base 1. The joint member 32 includes a connecting plate 321 and a pull rod 322. The connecting plate 321 is a triangular plate, and the first, second, and third hinge positions are respectively arranged on the triangles of the triangular plate. The connecting plate 321 is hinged to the first and second main arms 311 and 312 at the first and second hinge positions, respectively, to form a parallel four-bar linkage.

[0034] The third hinge position is set away from the first movable arm 31, and the first end of the pull rod 322 is hinged to the connecting plate 321 at the third hinge position. The second end of the pull rod 322 is hinged to the first end of the conveying ramp 2. The end of the first main arm 311 extends axially and is close to the first end of the conveying ramp 2 and is hinged to the conveying ramp 2. In this way, the first movable arm 31, the joint part 32 and the conveying ramp 2 form a stable linkage mechanism with good operational reliability. In addition, the first movable arm 31, the joint part 32 and the conveying ramp 2 form a multi-link linkage mechanism, which is foldable and convenient for storage and transportation.

[0035] like Figure 2 As shown, in order to improve the stability during the lifting process, there are two lifting arms 3 and they are symmetrically arranged on both sides of the axis of the conveying ramp 2. There is no connecting cross bar between the two first main arms 311, and the two second main arms 312 are provided with several connecting cross bars to facilitate the linkage mechanism to be folded and stored in the base 1.

[0036] The first drive unit 4 is an air cylinder or an oil cylinder. There are two first drive units 4 and they are symmetrically arranged on both sides of the axis of the conveying ramp 2. The cylinder body of the first drive unit 4 is hinged on the first movable arm 31, specifically, the cylinder body of the first drive unit 4 is hinged to the cross bar of the second main arm 312. The piston rod end of the first drive unit 4 is hinged to the bottom of the conveying ramp 2 to drive the first movable arm 31 and the conveying ramp 2 to open and close the angle. In this way, not only can the lifting or lowering be completed quickly and efficiently, and the work efficiency is improved, but also the structure is reasonable, the production and manufacturing cost is low, and the height of the applicable drilling platform can be greatly increased. Figure 7 In addition, when the first drive unit 4 drives the lifting arm 3, the conveying ramp 2 always has a downward tilt angle from the drilling floor surface outward.

[0037] It also includes a first stabilizing arm 5 and a second stabilizing arm 6, wherein the first stabilizing arm 5 includes a first stabilizing link 51 and a second stabilizing link 52, the first end of the first stabilizing link 51 is hinged to the base 1, the second end of the first stabilizing link 51 is hinged to the first end of the second stabilizing link 52, and the second end of the second stabilizing link 52 is upwardly close to the second end of the conveying ramp 2 and is hinged to the conveying ramp 2 to avoid lateral swinging of the conveying ramp 2, thereby further improving the operating stability of the power catwalk; in this embodiment, the first stabilizing link 51 and the second stabilizing link 52 can be folded and stored between the two first main arms 311.

[0038] like Figure 2 As shown, the first end of the second stabilizing arm 6 is slidably connected to the base 1, and the second end of the second stabilizing arm 6 is upwardly hinged to the second main arm 312. In other embodiments of the present invention, the second end of the second stabilizing arm 6 can also be upwardly hinged to the bottom of the conveying ramp 2 to avoid lateral swinging of the conveying ramp 2, which can further improve the operating stability of the power catwalk.

[0039] like Figures 2 to 6 As shown, it also includes a moving seat 7, a second driving unit 8, a pulley 9, a V-shaped groove 10 extending axially along the conveying ramp 2 and a third driving unit 11, as shown in FIG. Figure 4 As shown, the movable seat 7 includes a fixed plate, and a plurality of pulleys are symmetrically provided on both sides of the bottom of the fixed plate, such as Figure 3 As shown, a slide groove for accommodating a pulley is provided at the corresponding position of the conveying ramp 2, so that the movable seat 7 can be slidably connected to the conveying ramp 2, and the second driving unit 8 is any one of an air cylinder, an oil cylinder or an electric push rod. In this embodiment, the second driving unit 8 is an oil cylinder, and the second driving unit 8 is fixed on one end of the conveying ramp 2. The piston rod end of the second driving unit 8 is fixedly connected to the movable seat 7, so that the movable seat 7 can be driven to slide axially along the conveying ramp 2.

[0040] like Figure 2As shown, the V-shaped groove 10 is opened upward and is provided on the movable seat 7 for supporting the workpiece, and the V-shaped groove 10 passes through the pulley 9 and is slidably connected to the pulley 9. The pulley 9 is slidably provided on the movable seat 7 and can slide axially along the V-shaped groove 10 under the action of the third drive unit 11. The third drive unit is any one of 11 air cylinders, oil cylinders or electric push rods. In this embodiment, the third drive unit 11 is an oil cylinder. The third drive unit 11 is fixedly provided on the movable seat 7, and the piston rod end of the third drive unit 11 is fixedly connected to the pulley 9, so that the workpiece can be pushed to slide in the V-shaped groove 10.

[0041] In addition, in order to facilitate loading and unloading of workpieces, a fourth driving unit 12 is also included. Figure 5 As shown, the pulley 9 includes a slide 91 and a seat 92. The slide 91 includes a number of pulleys arranged symmetrically, and a slide groove for accommodating the pulleys is provided at the corresponding position of the movable seat 7, so that the slide 91 can be slidably connected to the movable seat 7, and the seat 92 is hinged downward to the slide 91, and a V-shaped hole 93 is provided on the seat 92 for the V-shaped groove 10 to pass through. The fourth drive unit 12 is any one of an air cylinder, an oil cylinder or an electric push rod. In this embodiment, the fourth drive unit 12 is an oil cylinder. The fourth drive unit 12 is fixed on the movable seat 7, and the piston rod end of the fourth drive unit 12 is hinged to the bottom of the V-shaped groove 10. In addition, the bottom of the V-shaped groove 10 is hinged to the movable seat 7, so that the fourth drive unit 12 can drive the V-shaped groove 10 to swing left and right to facilitate the picking and placing of workpieces.

[0042] like Figure 1 and 2 As shown, the central axes of the V-shaped groove 10, the movable seat 7, the conveying ramp 2, the lifting arm 3 and the base 1 are coplanar, and when the piston rod of the first drive unit 4 is fully retracted, the conveying ramp 2 is horizontally arranged and accommodated in the base 1. At this time, the lifting arm 3 is accommodated in the base 1, the first drive unit 4 and the first stabilizing arm 5 are accommodated between the two first main arms 311, and the second stabilizing arm 6 is accommodated in the base 1.

[0043] Working process

[0044] Take the example of transporting oil pipes / drilling tools and other workpieces to the drilling platform:

[0045] First, the controller controls the first drive unit 4 to move, increases the angle between the lifting arm 3 and the conveying ramp 2, and lifts the conveying ramp 2. Then, the controller controls the second drive unit 8 to move to convey the workpiece to the drilling platform. When the second drive unit 8 runs to the maximum stroke and the workpiece has not yet approached the drilling platform, the controller controls the third drive unit 11 to move to continue transporting the workpiece forward.

[0046] The conveying ramp 2 always has a downward inclination angle from the drilling floor during the lifting process, and pushes the workpiece toward the drilling floor through the second drive unit 8 and the third drive unit 11, which can drive the workpiece to continue to be lifted upward, thereby compensating for the height difference between the maximum height of the conveying platform and the drilling floor;

[0047] Take the example of transporting oil pipes, drilling tools and other workpieces from a drilling platform:

[0048] First, the controller controls the second drive unit 8 and the third drive unit 11 to operate to receive the workpiece into the V-groove 10. Under the action of its own weight, the workpiece slides in the V-groove 10 and abuts against the pulley 9. Afterwards, the controller controls the piston rod of the first drive unit 4 to contract, reducing the angle between the lifting arm 3 and the conveying ramp 2 to lower the conveying ramp 2. When it drops to the set height position, the controller controls the first drive unit 4 to shut down, and at the same time controls the fourth drive unit 12 to drive the V-groove 10 to flip sideways. The workpiece falls out of the V-groove 10 under the action of its own weight. The degree of automation is high and the structure is stable.

[0049] The present invention has been described above by way of examples, but the present invention is not limited to the above specific embodiments. Any changes or modifications based on the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A power catwalk that can adapt to various drilling floor heights, characterized in that: The invention comprises a base (1), a conveying ramp (2), a lifting arm (3) and a first driving unit (4), wherein the conveying ramp (2) is used for supporting a workpiece and is connected to the base (1) via the lifting arm (3), wherein the lifting arm (3) comprises a first movable arm (31) and a joint member (32), wherein the first movable arm (31) comprises a first main arm (311) and a second main arm (312), wherein the first ends of the first main arm (311) and the second main arm (312) are both hinged to the base (1), and the joint member (32) comprises a connecting plate (321) and a pull rod (322), wherein the connecting plate (321) is provided with a first hinge position, a second hinge position and a pull rod arranged in a triangle. The connecting plate (321) is hinged to the first main arm (311) and the second main arm (312) at the first hinge position and the second hinge position respectively to form a parallel four-bar linkage mechanism. The first end of the pull rod (322) is hinged to the connecting plate (321) at the third hinge position. The second end of the pull rod (322) is hinged to the conveying ramp (2). The end of the first movable arm (31) extends axially and is hinged to the conveying ramp (2). The first driving unit (4) is provided on the power catwalk and is used to control the opening and closing angle of the first movable arm (31) and the conveying ramp (2) to lift or lower the conveying ramp (2) to adapt to various drilling table heights. The first drive unit (4) is hinged to the first movable arm (31), and the piston rod end of the first drive unit (4) is hinged to the conveying ramp (2) to drive the first movable arm (31) and the conveying ramp (2) to open and close.

2. The power catwalk that can adapt to various drilling floor heights according to claim 1 is characterized in that: There are two lifting arms (3) which are symmetrically arranged on both sides of the axis of the conveying ramp (2).

3. The power catwalk that can adapt to various drilling floor heights according to claim 1 is characterized in that: The invention also includes a first stabilizing arm (5), wherein the first stabilizing arm (5) includes a first stabilizing link (51) and a second stabilizing link (52), wherein the first end of the first stabilizing link (51) is hinged to the base (1), the second end of the first stabilizing link (51) is hinged to the first end of the second stabilizing link (52), and the second end of the second stabilizing link (52) is hinged upward to the conveying ramp (2) to prevent the conveying ramp (2) from swinging sideways, and the first stabilizing link (51) and the second stabilizing link (52) can be folded and stored between the two first movable arms (31).

4. The power catwalk that can adapt to various drilling floor heights according to claim 3 is characterized in that: It also includes a second stabilizing arm (6), a first end of the second stabilizing arm (6) being slidably connected to the base (1), and a second end of the second stabilizing arm (6) being upwardly hinged to the first movable arm (31) or the conveying ramp (2) to prevent the conveying ramp (2) from swinging sideways.

5. The power catwalk that can adapt to various drilling floor heights according to claim 1 is characterized in that: The connecting plate (321) is a triangular plate, and the first hinge position, the second hinge position, and the third hinge position are respectively arranged on the triangles of the triangular plate.

6. The power catwalk capable of adapting to various drilling floor heights according to any one of claims 1 to 5, characterized in that: It also includes a movable seat (7) and a second drive unit (8), wherein the movable seat (7) is slidably arranged on the conveying ramp (2), and the second drive unit (8) is arranged on the conveying ramp (2) and can drive the movable seat (7) to slide axially along the conveying ramp (2).

7. The power catwalk capable of adapting to various drilling floor heights according to claim 6, characterized in that: The invention also includes a pulley (9), a V-shaped groove (10) extending axially along the conveying ramp (2), and a third driving unit (11). The V-shaped groove (10) is provided on the movable seat (7) with its opening facing upwards, and is used to support the workpiece. The V-shaped groove (10) passes through the pulley (9) and is slidably connected to the pulley (9). The pulley (9) is slidably provided on the movable seat (7) and can slide axially along the V-shaped groove (10) under the action of the third driving unit (11) to push the workpiece to slide.

8. The power catwalk capable of adapting to various drilling floor heights according to claim 7, characterized in that: The vehicle (92) further comprises a fourth driving unit (12), wherein the pulley (9) comprises a slide seat (91) and a vehicle seat (92), wherein the slide seat (91) is axially slidably arranged on the movable seat (7) and can slide under the action of the third driving unit (11), the vehicle seat (92) is hinged to the slide seat (91), and a V-shaped hole (93) is provided on the vehicle seat (92) for the V-shaped groove (10) to pass through, and the V-shaped groove (10) is hinged to the movable seat (7) and can swing left and right under the action of the fourth driving unit (12) to facilitate the picking up and placing of workpieces.

9. The power catwalk capable of adapting to various drilling floor heights according to claim 8, characterized in that: The fourth drive unit (12) is any one of an air cylinder, an oil cylinder or an electric push rod. The fourth drive unit (12) is hinged to the movable seat (7), and the piston rod end of the fourth drive unit (12) is hinged to the bottom of the V-shaped groove (10).

10. The power catwalk capable of adapting to various drilling floor heights according to any one of claims 7 to 9, characterized in that: The central axes of the V-shaped groove (10), the movable seat (7), the conveying ramp (2) and the base (1) are coplanar.

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