Reversible maintenance platform

Abstract

The utility model discloses a reversible maintenance platform, which comprises two rotating components, a maintenance platform, a driving unit and a controller, the two rotating components have the same structure and are respectively arranged on two sides of an object to be maintained, the maintenance platform is arranged on the rotating components in a vertical height adjustable manner, the first end of each rotating component is hinged to a derrick, and the second end of each rotating component is hinged to a derrick. The driving unit is connected with the controller and can drive the rotating assembly to turn over from a first position to a second position, when the rotating assembly is located at the first position, the rotating assembly is in a storage state to reduce horizontal space occupation of an object to be maintained, and when the rotating assembly is located at the second position, the rotating assembly is in a storage state to reduce horizontal space occupation of the object to be maintained. The rotating assembly is arranged close to the to-be-maintained object, and operation of workers is facilitated. The device is reasonable in structure, small in occupied space and good in applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum machinery, in particular to a reversible maintenance platform. Background Art

[0002] The derrick is a vital component in oil production. It is set around the wellhead and is mainly used for drilling and well repair operations. It is a tall structure used to support various drilling equipment and tools to ensure the safety of drilling operations; the well cap is an important equipment used by the oil and gas industry to control wellhead pressure, prevent blowout accidents and protect the safety of underground operations. They play a key role in drilling, completion, production and maintenance operations. Well caps can be divided into many types, among which self-sealing well caps and blowout preventers (BOP, Blowout Preventer) are the most common and important two types. The reliability and effectiveness of well caps are directly related to the safety of well site operations. Therefore, regular maintenance, testing and replacement of seals are important measures to ensure their normal function. In the prior art, workers usually climb to the well cap for maintenance. The well caps at different wellheads are of different heights, some of which are even more than six meters above the wellhead, and the on-site environment is harsh. Not only is the safety risk of maintenance operations high, but the tools used for lifting also occupy a large space and are inconvenient to operate. Utility Model Content

[0003] The utility model discloses a reversible maintenance platform, which solves the technical problems in the prior art that the lifting tools used for repairing and maintaining the well plugging device occupy a large space, have poor safety in use and high safety risks, and has the technical advantages of reasonable structure, small space occupation and good applicability. The adopted technical solution is as follows:

[0004] A flippable maintenance platform comprises two rotating components, a maintenance platform, a driving unit and a controller. The two rotating components have the same structure and are arranged on both sides of an object to be repaired. The maintenance platform is arranged on the rotating components in an adjustable manner in terms of up and down height. The first end of the rotating component is hinged on a derrick. The driving unit is connected to the controller and can drive the rotating component to flip from a first position to a second position. Preferably, the driving unit is hydraulically driven, and the hydraulic drive is connected to the controller through a high-pressure oil pipe, so that workers can manually operate and control the driving unit, reducing the use of electronic components and helping to improve safety in use. When the rotating component is in the first position, the rotating component is in a storage state to reduce the horizontal space occupied by the object to be repaired. When the rotating component is in the second position, the rotating component is arranged close to the object to be repaired, which is convenient for workers to operate.

[0005] On the basis of the above technical solution, the rotating assembly is flipped upside down to reduce the horizontal space occupied by the object to be repaired, or the rotating assembly is flipped left to right to reduce the horizontal space occupied by the object to be repaired.

[0006] On the basis of the above technical solution, it also includes a leveling component, which can be axially extended and retracted, the first end of the leveling component can be hinged to the second end of the rotating component, and the second end of the leveling component can be downwardly abutted against a nearby table surface.

[0007] Based on the above technical solution, the leveling assembly includes two telescopic rods, which include a lead screw, a nut sleeve cooperating with the lead screw, and a locking nut cooperating with the lead screw. The nut sleeve is hinged upward to the second end of the rotating assembly, and the locking nut sleeve is arranged outside the lead screw and can abut against the nut sleeve upward to position the nut sleeve. The two nut sleeves are fixedly connected by a cross bar and together form a ladder.

[0008] On the basis of the above technical solution, it also includes a lifting drive, the maintenance platform is connected to the rotating assembly through a scissors-type lifting mechanism, and the lifting drive includes a lifting cylinder, and the lifting cylinder is arranged in the scissors-type lifting mechanism to drive the scissors-type lifting mechanism to extend and retract.

[0009] On the basis of the above technical solution, a guardrail is provided on the maintenance platform, and the guardrail includes a notch, and a door frame is hinged on one side of the notch, and the door frame can be locked with the other side of the notch by a spring lock.

[0010] On the basis of the above technical solution, the first end of the rotating assembly is hinged to a fixed vertical plate through a mounting seat, the mounting seat includes a three-link assembly arranged non-collinearly, the link assembly includes a first rod member and a second rod member, the first ends of the first rod member and the second rod member are respectively hinged to the vertical plate on the derrick base, the second end of the first rod member is hinged to the second end of the second rod member, the driving unit includes a rotating cylinder, the first end of the rotating cylinder is hinged to a first rod member, and the piston rod of the rotating cylinder is hinged to the rotating assembly to drive the rotating assembly to flip from the first position to the second position.

[0011] On the basis of the above technical solution, it also includes at least one auxiliary pull rod, the first end of the auxiliary pull rod is hinged to the mounting seat, when the rotating assembly is in the first position, the second end of the auxiliary pull rod can be hinged to the rotating assembly through a pin shaft to position the rotating assembly, when the rotating assembly is in the second position, the second end of the auxiliary pull rod is connected to the vertical plate to fix the second end of the auxiliary pull rod.

[0012] On the basis of the above technical solution, explosion-proof valves are provided at the interface between the rotary oil cylinder and the hydraulic pipeline and on the hydraulic pipeline.

[0013] Beneficial Effects

[0014] The present invention has a reasonable structure. The two rotating components are arranged on both sides of the object to be repaired, which can support a maintenance platform with a larger area, and facilitate multiple people to cooperate in maintenance operations from multiple angles. The rotating component can be flipped from the first position to the second position, so that the extension and storage of the rotating component can be achieved. In the extended state, the maintenance platform is set close to the object to be repaired, and multiple staff members can perform maintenance operations on the maintenance platform. In the stored state, the plane space at the object to be repaired can be effectively saved to avoid interference with other drilling equipment, etc., and the flexibility of use is good. A leveling component is also provided at the second end of the rotating component to avoid the rotating component from forming a cantilever beam structure, which is beneficial to improving the structural stability and is suitable for table conditions in different conditions. In addition, the leveling component also includes a ladder to facilitate staff to climb to the maintenance platform, which is easy to use.

[0015] In the present invention, the rotating assembly is arranged on the derrick through a mounting seat, and the mounting seat includes at least a three-link assembly, and the link assembly includes a first rod and a second rod that are hinged to each other, so that it is convenient to fold and transport the derrick after it is dismantled, and to assemble the derrick when it is built at the next entrance. In addition, the setting of the auxiliary pull rod is conducive to improving the structural stability of the rotating assembly and improving the safety of use.

[0016] The maintenance platform in the present invention is connected to the rotating assembly by a scissor-type lifting mechanism, so that the height of the maintenance platform can be flexibly adjusted, so that the maintenance platform can stay at different heights of the same well plug, which is convenient for operation. When the maintenance object is a well plug, it can be used for well plugs of different wellheads, and has good applicability. The scissor-type lifting mechanism can be folded to store the maintenance platform, and when the rotating assembly is in the first position, the space occupied by wellhead accessories can be further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 : A schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 : A three-dimensional structural diagram of the rotating assembly in the utility model;

[0020] Figure 3 : A schematic diagram of the three-dimensional structure in which the maintenance platform of the utility model is installed on the rotating assembly through a scissor-type lifting mechanism;

[0021] Figure 4 : A schematic diagram of the three-dimensional structure of the leveling component in the utility model;

[0022] Figure 5 : A schematic structural diagram of a side view of the mounting seat in the utility model; DETAILED DESCRIPTION

[0023] The following description and accompanying drawings fully illustrate the specific embodiments of this article so that those skilled in the art can practice them. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The scope of the embodiments of this article includes the entire scope of the claims, as well as all available equivalents of the claims. Herein, the terms "first", "second", etc. are only used to distinguish one element from another, without requiring or implying any actual relationship or order between these elements. In fact, the first element can also be called the second element, and vice versa. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the structure, device or equipment including a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also include elements inherent to such structure, device or equipment. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the structure, device or equipment including the elements. Each embodiment is described in a progressive manner herein, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other.

[0024] The terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. in this document indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this document and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of this document, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, it can also be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] As used herein, unless otherwise specified, the term "plurality" means two or more than two.

[0026] 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.

[0027] In this article, the term "and / or" is a description of the association relationship between objects, indicating that three relationships may exist. For example, A and / or B means: A or B, or, A and B.

[0028] like Figures 1 to 5 The reversible maintenance platform shown in the figure includes a rotating assembly 1, a maintenance platform 2, a drive unit 3 and a controller 4. The object to be repaired is a well sealer, which is a machine that closes the wellhead during special operations and combines the functions of full sealing and semi-sealing. It is a safety sealing wellhead device commonly used in oil fields to prevent blowouts. In addition, the derrick is a vital component in oil production. It is set around the wellhead and is mainly used for drilling and well repair operations. It is a tall structure used to support various drilling equipment and tools to ensure the safety of drilling operations. The maintenance and overhaul of the well sealer is usually carried out in the derrick. The space structure in the derrick is limited. It is also a support platform for drilling equipment such as drilling rigs, and it also provides space for riser transportation.

[0029] like Figure 2 As shown, the rotating assembly 1 is a frame structure, including a plurality of horizontal bars and longitudinal bars. The first end of the rotating assembly 1 is hinged to the vertical plate 200 of the derrick base through the mounting seat 5. The vertical plate 200 is fixed on the derrick base and is arranged close to the well capping device. The controller 4 is installed on the vertical plate 200. In addition, there are two rotating assemblies 1 and they are arranged on both sides of the well capping device, which is convenient for workers to operate from multiple positions. In this embodiment, the two rotating assemblies 1 can move synchronously.

[0030] like Figure 1 and 5 As shown, the mounting seat 5 includes a three-link assembly 51 arranged non-collinearly, such as Figure 1 As shown, the three-link assembly 51 is roughly arranged in a triangle, specifically, two of the link assemblies 51 are arranged on the vertical plate 200 at the same height, and the other link assembly 51 is arranged below, and each link assembly 51 includes a first rod member 511 and a second rod member 512, and the first ends of the first rod member 511 and the second rod member 512 are respectively hinged to the vertical plate 200, and the second end of the first rod member 511 is hinged to the second end of the second rod member 512. In this way, the first rod member 511, the second rod member 512 and the vertical plate 200 form a stable triangular structure with greater force-bearing performance. At the same time, during transportation after the derrick is disassembled, the second ends of the first rod member 511 and the second rod member 512 can be removed to facilitate folding and transportation, thereby reducing space occupancy.

[0031] like Figure 5 As shown, the first end of the rotating assembly 1 is hinged to two first rods 511 of the same height, so that the first end of the rotating assembly 1 can be hinged to the vertical plate 200 through the mounting seat 5 .

[0032] The driving unit 3 includes a rotary cylinder, which is connected to the controller 4. The first end of the rotary cylinder is hinged to the first rod 511 in a connecting rod assembly 51 at a lower position. The piston rod of the rotary cylinder is hinged to the position of the rotary assembly 1 close to its first end, and the axis of the rotary cylinder is on the central axis plane of the rotary assembly 1. In this way, when the piston rod of the rotary cylinder is extended or retracted, the rotary assembly 1 can be driven to flip from the first position to the second position. In this embodiment, when the rotary assembly 1 is in the first position, the rotary assembly is in a storage state, such as Figure 5 As shown, it is arranged vertically to reduce the space occupied at the wellhead, and at this time, the piston rod of the rotating oil cylinder is extended to the maximum stroke; when the rotating assembly 1 is in the second position, the rotating assembly 1 is extended horizontally and arranged close to the well plug, which is convenient for workers to operate. At this time, the piston rod of the oil cylinder is retracted to the initial state, which is safe to use and avoids the situation where the rotating assembly 1 suddenly rotates when the rotating oil cylinder fails, causing personal safety accidents. Among them, the rotating oil cylinder is connected to the external hydraulic source through a hydraulic pipeline, and an explosion-proof valve is provided at the interface between the rotating oil cylinder and the hydraulic pipeline and on the hydraulic pipeline; the rotating oil cylinder is connected to the control through a high-pressure oil pipe, so that workers can manually operate the control drive unit, reduce the use of electronic components, and help improve safety in use. In other embodiments of the present invention, it can be designed that the rotating assembly 1 can be rotated horizontally from the first position to the second position to reduce the space occupied by the wellhead accessories.

[0033] like Figure 5 As shown, it also includes at least one auxiliary pull rod 10, and two first rods 511 with the same height are connected by a first cross bar. The first end of the auxiliary pull rod 10 is hinged to the first cross bar. When the rotating component 1 is in the first position, the second end of the auxiliary pull rod 10 can be hinged to the rotating component 1 through a pin. Specifically, an ear plate is provided on the rotating component 1, and the ear plate includes a through hole. A pin can pass through the through hole and the second end of the auxiliary pull rod 10. In this way, the rotating component 1 can be positioned in the stored state to avoid safety accidents when the rotating cylinder fails. When the rotating component 1 is in the second position, the second end of the auxiliary pull rod 10 is connected to the vertical plate 200. In this way, the auxiliary pull rod 10 can be stored to avoid safety accidents such as bumps.

[0034] Also includes a leveling component 6, such as Figure 4As shown, the leveling assembly 6 can be axially retracted and the leveling assembly 6 includes two telescopic rods 61 arranged vertically. In this embodiment, the telescopic rod 61 includes a lead screw 610, a nut sleeve 611 matched with the lead screw 610, and a locking nut 612 matched with the lead screw 610. The nut sleeve 611 is hinged upward to the second end of the rotating assembly 1. The locking nut 612 is sleeved outside the lead screw 610 and can be abutted against the nut sleeve 611 upward. The nut sleeve 611 is positioned by the locking nut 612 to improve the safety of use. When the rotating cylinder drives the rotating assembly 1 to flip from the first position to the second position and the rotating assembly 1 is horizontally extended and arranged close to the well capping device, the worker rotates the two telescopic rods 61 to make the bottom end of the lead screw 610 abut against the table surface of the derrick base downward. On the one hand, it avoids the rotating assembly 1 from forming a cantilever beam structure, and on the other hand, it can adapt to the uneven table surface and has good applicability. In addition, as Figure 4 As shown, the nut sleeves 611 are fixedly connected by a cross bar 613, and the two nut sleeves 611 and a plurality of cross bars 613 together form a ladder, which facilitates the workers on the well plugging device table to climb to the maintenance platform.

[0035] like Figure 1 and 3 As shown, the maintenance platform 2 is arranged on the rotating assembly 1, and the staff can stand on the maintenance platform 2 to operate and maintain the well plug. It also includes a lifting drive 11. The maintenance platform 2 is connected to the rotating assembly 1 through a scissor-type lifting mechanism 7. The scissor-type lifting mechanism 7 includes a plurality of scissor-type units arranged vertically. The bottom scissor-type units include four connecting parts. Two connecting parts arranged on one side are hinged to the rotating assembly 1. The ends of the two connecting parts arranged on the other side are sleeved with pulleys. The pulleys are embedded in the upper slide groove of the rotating assembly 1 at the corresponding positions. The lifting drive 11 includes a lifting cylinder. The lifting cylinder is arranged in the scissor-type lifting mechanism 7 to drive the scissor-type lifting mechanism to extend and retract. Among them, the scissor-type lifting mechanism 7 is a prior art and will not be described here. In other embodiments of the present invention, the scissor-type lifting mechanism 7 can also be replaced by other lifting mechanisms.

[0036] like Figure 1 As shown, a guardrail 8 is provided on the maintenance platform 2, and the guardrail 8 includes a notch, and a door frame 9 is hinged on one side of the notch. It is easy to use and has good safety. The door frame 9 can be locked with the other side of the notch by a spring lock, wherein the spring lock is a prior art and technical personnel in this field can select it according to needs.

[0037] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A reversible maintenance platform, characterized in that: The invention comprises two rotating assemblies (1), a maintenance platform (2), a driving unit (3) and a controller (4); the two rotating assemblies (1) have the same structure and are arranged on both sides of an object to be repaired; the maintenance platform (2) is arranged on the rotating assemblies (1) in an adjustable manner in terms of height; the first end of the rotating assemblies (1) is hinged on a derrick; the driving unit (3) is connected to the controller (4) and can drive the rotating assemblies (1) to flip from a first position to a second position; when the rotating assemblies (1) are in the first position, the rotating assemblies (1) are in a storage state to reduce the horizontal space occupied by the object to be repaired; when the rotating assemblies (1) are in the second position, the rotating assemblies (1) are arranged close to the object to be repaired to facilitate operation by workers.

2. The reversible maintenance platform according to claim 1, characterized in that: The rotating assembly (1) is turned upside down to reduce the horizontal space occupied by the object to be repaired, or the rotating assembly (1) is turned leftward to rightward to reduce the horizontal space occupied by the object to be repaired.

3. The reversible maintenance platform according to claim 2, characterized in that: It also comprises a leveling component (6), which is axially retractable, a first end of which is hinged to the second end of the rotating component (1), and a second end of which is downwardly abutted against a nearby table surface.

4. The reversible maintenance platform according to claim 3, characterized in that: The leveling assembly (6) comprises two telescopic rods (61), the telescopic rods (61) comprising a lead screw (610), a nut sleeve (611) matched with the lead screw (610), and a locking nut (612) matched with the lead screw (610), the nut sleeve (611) being hinged upwardly to the second end of the rotating assembly (1), the locking nut (612) being sleeved outside the lead screw (610) and being able to abut against the nut sleeve (611) upwardly to position the nut sleeve (611), and the two nut sleeves (611) being fixedly connected via a crossbar (613) and forming a ladder together.

5. The reversible maintenance platform according to claim 3, characterized in that: It also includes a lifting drive (11), wherein the maintenance platform (2) is connected to the rotating assembly (1) via a scissor-type lifting mechanism (7), and the lifting drive (11) includes a lifting cylinder, wherein the lifting cylinder is arranged in the scissor-type lifting mechanism (7) and is used to drive the scissor-type lifting mechanism (7) to extend and retract.

6. The reversible maintenance platform according to claim 5, characterized in that: The maintenance platform (2) is provided with a guardrail (8), the guardrail (8) comprising a notch, one side of the notch being hinged with a door frame (9), the door frame (9) being lockable with the other side of the notch via a spring lock.

7. The reversible maintenance platform according to any one of claims 1 to 6, characterized in that: The first end of the rotating assembly (1) is hinged to a fixed vertical plate (200) via a mounting seat (5); the mounting seat (5) comprises a three-link assembly (51) arranged non-collinearly; the link assembly (51) comprises a first rod (511) and a second rod (512); the first ends of the first rod (511) and the second rod (512) are respectively hinged to the vertical plate (200); the second end of the first rod (511) is hinged to the second end of the second rod (512); the driving unit (3) comprises a rotating cylinder; the first end of the rotating cylinder is hinged to a first rod (511); the piston rod of the rotating cylinder is hinged to the rotating assembly (1) to drive the rotating assembly (1) to flip from the first position to the second position.

8. The reversible maintenance platform according to claim 7, characterized in that: It also includes at least one auxiliary pull rod (10), the first end of the auxiliary pull rod (10) being hinged to the mounting seat (5); when the rotating assembly (1) is in the first position, the second end of the auxiliary pull rod (10) is hinged to the rotating assembly (1) via a pin to position the rotating assembly (1); when the rotating assembly (1) is in the second position, the second end of the auxiliary pull rod (10) is connected to the vertical plate (200) to fix the second end of the auxiliary pull rod (10).

9. The reversible maintenance platform according to claim 8, characterized in that: Explosion-proof valves are arranged at the interface between the rotary oil cylinder and the hydraulic pipeline and on the hydraulic pipeline.

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