Electric elevator

Abstract

The invention provides an electric elevator, and relates to the technical field of petroleum drilling, the electric elevator comprises an elevator main body, a locking door unit and a driving unit, a bayonet is formed in the elevator main body, the locking door unit comprises a valve and a locking door which are hinged to the two ends of the bayonet respectively, and the driving unit is an opening and closing electric push rod with a bidirectional output end; the two output ends of the opening and closing electric push rod are connected with the valve and the locking door through corresponding transmission units respectively and used for driving the valve and the locking door to be matched with the bayonet so that the bayonet can form a closed loop. The electric elevator is further connected with a turnover mechanism, and the turnover mechanism is used for driving the electric elevator to turn over by 90 degrees, so that a bayonet of the electric elevator rotates to the horizontal direction from the vertical direction. The structure is simplified, one electric push rod is adopted, the cost is greatly reduced, elevator opening and closing are achieved by opening and closing the electric push rod, electric driving is adopted, and the problems that a hydraulic cylinder operates slowly in the hydraulic low-temperature environment, too much oil leaks from a pipeline, and installation and maintenance are inconvenient can be thoroughly solved.

Description

Technical Field

[0001] The present invention relates to the technical field of oil drilling, in particular to an electric elevator. Background Art

[0002] The electrification, automation, and digitalization of oil drilling and well servicing operations are the development trends of oil drilling and well servicing machinery, and various types of green, efficient, electrified, and automated oil tools are currently in urgent need of drilling and well servicing equipment. Conventional elevators are relatively large in size, and the angle of the elevator's bayonet is inconvenient to flip, making them unable to adapt to working conditions. However, current conventional elevators are relatively large in size, operate slowly in hydraulic low-temperature environments, have relatively complex control structures, and generally require multiple signal control lines to complete drive control. In addition, too many pipelines can easily cause problems such as oil leakage and inconvenient maintenance. At the same time, conventional elevators in the existing technology use manual operations, which are labor-intensive and highly dangerous. They cannot meet the overall transformation and upgrading of existing drilling and servicing equipment from automation to digitalization, and from digitalization to intelligence, and promote the implementation of smart oil and gas fields. In summary, we have proposed an electric elevator to solve the above-mentioned technical problems. Summary of the Invention

[0003] The object of the present invention is to provide an electric elevator to solve one or more of the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present application provides an electric elevator, including an elevator body, a locking door unit and a driving unit. A bayonet is provided on the elevator body. The locking door unit includes a valve and a locking door respectively hinged at the two ends of the bayonet. The driving unit is an opening and closing electric push rod with a two-way output end. The two output ends of the opening and closing electric push rod are respectively connected to the valve and the locking door through corresponding transmission units, and are used to drive the valve and the locking door to cooperate with the bayonet so that the bayonet forms a closed loop; the electric elevator is also connected to a flipping mechanism, which is used to drive the electric elevator to flip 90 degrees, so that the bayonet of the elevator rotates from a vertical upward direction to a horizontal direction.

[0005] As a preferred embodiment that can be realized, the transmission unit includes a valve transmission member and a door lock transmission member, the valve transmission member includes a valve rotating head and a valve pull rod, one end of the valve pull rod is hinged to the valve, and the other end is hinged to the valve rotating head, and the other end of the valve rotating head is hinged to an output end of the opening and closing electric push rod; the door lock transmission member includes a door lock rotating head and a door lock pull rod, one end of the door lock pull rod is hinged to the lock door, and the other end is hinged to the door lock rotating head, and the other end of the door lock rotating head is hinged to the other output end of the opening and closing electric push rod.

[0006] As an achievable preferred method, the door lock rotating head is an L-shaped rotating part, including a horizontal plate and a vertical plate connected to the horizontal plate. The openings of the L-shaped rotating part are all facing inward, the horizontal plate is hinged to the door lock pull rod, and the vertical plate is hinged to the opening and closing electric push rod.

[0007] As a preferred embodiment, a notch is provided on the vertical plate of the door lock rotating head, a limit link is hinged on the valve rotating head, and the free end of the limit link abuts against the notch of the door lock rotating head.

[0008] As a preferred embodiment, both the valve rotating head and the door locking rotating head are hingedly connected with mounting seats, and the mounting seats are fixedly connected to the elevator body.

[0009] As a preferred embodiment, the flip mechanism includes a frame housing and a flip electric push rod installed in the frame housing. The output end of the flip electric push rod is hinged to a flip rotating head, and the flip rotating head is fixedly connected to the elevator body.

[0010] As a preferred embodiment that can be implemented, the flip rotating head includes a first fixed plate and a second fixed plate connected to each other, the first fixed plate is fixedly connected to the output end of the flip electric push rod, the connection between the first fixed plate and the second fixed plate is hinged to the frame shell, the lower end of the second fixed plate is fixedly connected to the flip connecting plate, and the flip connecting plate is fixedly connected to the elevator body.

[0011] As a preferred embodiment, the angle between the first fixed plate and the second fixed plate is an obtuse angle. When the flip mechanism is not flipped, the second fixed plate is in a vertical downward position. When the flip mechanism is flipped, the output shaft of the flip electric push rod extends downward, and the second fixed plate rotates to a horizontal position, thereby realizing a 90-degree flip of the elevator body and rotating the elevator bayonet from a vertical upward position to a horizontal position.

[0012] As a preferred embodiment, the second fixing plate is provided with a vertically downward opening slot, one end of the flip connecting plate is fixed to the opening slot by a bolt, and the other end of the flip connecting plate is fixedly connected to the elevator body.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention is designed and developed for an electric-driven drilling and workover rig, so that components such as the pipe string are clamped in the bayonet of the electric elevator, and the opening and closing electric push rods at the two-way output end respectively drive the valve and the lock door through the corresponding transmission unit to cooperate with the bayonet to form a closed loop, thereby clamping the pipe string.

[0015] 2. The present invention simplifies the structure and uses only one electric push rod, which greatly reduces the cost. The elevator switch is realized by opening and closing the electric push rod. The use of electric drive can completely solve the problems of slow operation of hydraulic cylinders in low-temperature environments, excessive oil leakage in pipelines, inconvenient installation and maintenance, etc. At the same time, the electric push rod is smaller in size and lighter in weight, and signal control can be achieved using only one multi-core cable.

[0016] 3. The flip mechanism can rotate the bayonet of the electric elevator from vertical upward to horizontal direction to adapt to working conditions and realize intelligent control. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of an electric elevator provided by the present invention;

[0018] Figure 2 A schematic diagram of the three-dimensional structure of an electric elevator provided by the present invention;

[0019] Figure 3 A schematic structural diagram of an electric elevator provided by the present invention from another perspective;

[0020] Figure 4 A schematic structural diagram of an electric elevator provided by the present invention from another perspective;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of an electric elevator provided by the present invention from another perspective. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] It should be noted that all expressions using "first", "second", "third" and "fourth" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first", "second", "third" and "fourth" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. Subsequent embodiments will not explain this one by one.

[0024] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 understood as limiting the scope of protection of the present invention.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0026] See also Figure 1 As shown, the present invention provides an electric elevator, including an elevator body 1, a locking door unit and a driving unit. The elevator body 1 is provided with a bayonet 2. The locking door unit includes a valve 3 and a locking door 4 respectively hinged to the two ends of the bayonet. The driving unit is an opening and closing electric push rod 5 with a bidirectional output end. The two output ends of the opening and closing electric push rod 5 are respectively connected to the valve 3 and the locking door 4 through corresponding transmission units, and are used to drive the valve 3 and the locking door 4 to cooperate with the bayonet 2 to form a closed loop. The electric elevator is also connected to a flip mechanism, and the flip mechanism is used to drive the electric elevator to flip 90 degrees, so that the bayonet of the electric elevator rotates from a vertical upward direction to a horizontal direction.

[0027] It should be noted that the present invention is designed and developed for an electric-driven drilling and workover rig. Components such as the tubing string are clamped within the bayonet of the electric elevator. The opening and closing electric push rod 4 at the bidirectional output end, through corresponding transmission units, drives the valve 3 and the lock door 4 to cooperate with the bayonet 2, forming a closed loop and thereby clamping the tubing string. The present invention simplifies the structure and utilizes a single electric push rod, significantly reducing costs. By utilizing the opening and closing electric push rod to open and close the elevator and adopting an electric drive, it can completely resolve issues such as slow hydraulic cylinder operation in low-temperature environments, excessive pipeline oil leakage, and inconvenient installation and maintenance. Furthermore, the electric push rod is smaller and lighter, enabling signal control using only a single multi-core cable.

[0028] In addition, more preferably, the electric elevator is also connected to a flip mechanism, which is used to drive the electric elevator to flip 90 degrees. The flip mechanism includes a frame shell and a flip electric push rod 12 installed in the frame shell. The output end of the flip electric push rod 12 is hinged to a flip rotating head 14, and the flip rotating head 14 is fixedly connected to the elevator body 1.

[0029] The flip rotating head 14 includes a first fixed plate 141 and a second fixed plate 142 connected to each other. The first fixed plate is fixedly connected to the output end of the flip electric push rod 12. The connection between the first fixed plate 141 and the second fixed plate 142 is hinged to the frame shell. The lower end of the second fixed plate 142 is fixedly connected to the flip connecting plate, and the flip connecting plate is fixedly connected to the elevator body 1.

[0030] The angle between the first fixing plate and the second fixing plate is an obtuse angle. When the flip mechanism is not flipped, the second fixing plate is in a vertical downward position. When the flip mechanism is flipped, the output shaft of the flip electric push rod extends downward, and the second fixing plate rotates to a horizontal position, realizing a 90-degree flip of the elevator body, so that the bayonet of the electric elevator rotates from a vertical upward direction to a horizontal direction. Figure 3 The arrow in the figure indicates the direction of rotation of the flip rotary head.

[0031] The second fixing plate is provided with an opening slot 143 extending vertically downwards. One end of the flip connecting plate 13 is fixed to the opening slot by a bolt, and the other end of the flip connecting plate is fixed to the elevator body by a bolt.

[0032] As shown in the figure, the transmission unit includes a valve transmission component and a door lock transmission component. The valve transmission component includes a valve rotating head 6 and a valve pull rod 7. One end of the valve pull rod 7 is hinged to the valve 3 through a pin shaft, and the other end is hinged to the valve rotating head 6 through a hinge pin. The other end of the valve rotating head 6 is hinged to an output end of the opening and closing electric push rod 5 through a pin shaft; the door lock transmission component includes a door lock rotating head 8 and a door lock pull rod 9. One end of the door lock pull rod 9 is hinged to the lock door 4 through a pin shaft, and the other end is hinged to the door lock rotating head 8 through a pin shaft. The other end of the door lock rotating head 8 is hinged to the other output end of the opening and closing electric push rod 5 through a pin shaft.

[0033] More preferably, the door lock rotating head 8 is an L-shaped rotating member, comprising a horizontal plate 81 and a vertical plate 82 connected to the horizontal plate. The openings of the L-shaped rotating member are both inward-facing. The horizontal plate 81 is hinged to the door lock lever 9, and the vertical plate 82 is hinged to the opening and closing electric push rod 5. A mounting base is hinged at the connection between the horizontal plate 81 and the vertical plate via a pin, and the mounting base is fixed to the elevator body via bolts. This provides a more stable structure and ensures effective transmission.

[0034] In the present invention, the valve rotating head 6 is also constructed as an L-shaped rotating member. Its vertical plate connects to the other output end of the opening and closing electric push rod 5. The connection between the horizontal plate and the vertical plate of the valve rotating head is also hinged to a mounting base via a pin. The mounting base is fixed to the elevator body via bolts. One end of the horizontal plate is hinged to both the valve lever 9 and the limit link 10 via a hinge pin.

[0035] As shown in the figure, a notch 83 is provided on the vertical plate of the door lock rotating head 8 , and the free end of the limiting link 10 abuts against the notch of the door lock rotating head 8 .

[0036] Principle description: When the opening and closing electric push rod retracts toward the side close to the valve rotating head, it drives the door locking rotating head to rotate and drives the door locking rod to move, and the door locking rod 8 moves to drive the door locking 3 to open, and the opening and closing electric push rod continues to retract, that is, the output shaft of the opening and closing electric push rod close to the valve rotating head continues to retract inward, driving the valve rotating head to flip, and the flip of the valve rotating head drives the valve pulling rod 7 to move. Since the free end of the limit link abuts against the notch, the valve pulling rod 7 drives the valve to open;

[0037] When the opening and closing electric push rod is extended, it drives the valve rotating head to flip, and the flip of the valve rotating head drives the valve pull rod 7 to move, and the valve pull rod 7 drives the valve to engage with the bayonet, and the limit link abuts against the notch of the lock door rotating head, thereby limiting the rotation of the lock door rotating head. However, when the valve is engaged with the bayonet, the electric push rod continues to extend, driving the lock door rotating head to rotate. Due to the limitation of the limit link, the lock door gradually engages with the valve.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric elevator, characterized in that: The invention comprises an elevator body (1), a door lock unit and a driving unit. The elevator body (1) is provided with a bayonet (2). The door lock unit comprises a movable door (3) and a door lock (4) respectively hinged to the two ends of the bayonet. The driving unit is an opening and closing electric push rod (5) with a bidirectional output end. The two output ends of the opening and closing electric push rod (5) are respectively connected to the movable door (3) and the door lock (4) through corresponding transmission units, and are used to drive the movable door (3) and the door lock (4) to cooperate with the bayonet (2) so that the bayonet forms a closed loop. The electric elevator is further connected to a flip mechanism, which is used to drive the electric elevator to flip 90 degrees, so that the bayonet of the electric elevator rotates from a vertical upward direction to a horizontal direction.

2. The electric elevator according to claim 1, characterized in that: The transmission unit includes a valve transmission member and a door lock transmission member, the valve transmission member includes a valve rotating head (6) and a valve pull rod (7), one end of the valve pull rod (7) is hinged to the valve (3), and the other end is hinged to the valve rotating head (6), and the other end of the valve rotating head (6) is hinged to an output end of the opening and closing electric push rod (5); the door lock transmission member includes a door lock rotating head (8) and a door lock pull rod (9), one end of the door lock pull rod (9) is hinged to the lock door (4), and the other end is hinged to the door lock rotating head (8), and the other end of the door lock rotating head (8) is hinged to the other output end of the opening and closing electric push rod (5).

3. The electric elevator according to claim 2, characterized in that: The door lock rotating head (8) is an L-shaped rotating part, comprising a horizontal plate (81) and a vertical plate (82) connected to the horizontal plate. The openings of the L-shaped rotating part are all facing inward. The horizontal plate (81) is hinged to the door lock pull rod (9), and the vertical plate (82) is hinged to the opening and closing electric push rod (5).

4. The electric elevator according to claim 3, characterized in that: A notch (83) is provided on the vertical plate of the door lock rotating head (8), a limit connecting rod (10) is hinged on the movable door rotating head (6), and the free end of the limit connecting rod (10) abuts against the notch of the door lock rotating head (8).

5. The electric elevator according to claim 4, characterized in that: The valve rotating head (6) and the door locking rotating head (8) are both hingedly connected to a mounting seat (11), and the mounting seat (11) is fixedly connected to the elevator body (1).

6. The electric elevator according to claim 1, characterized in that: The flip mechanism comprises a frame housing and a flip electric push rod (12) installed in the frame housing. The flip electric push rod (12) is connected to a flip rotating head (14). The flip rotating head (14) is fixedly connected to the elevator body (1).

7. The electric elevator according to claim 6, characterized in that: The flip rotating head (14) comprises a first fixed plate (141) and a second fixed plate (142) connected to each other, wherein the first fixed plate (141) is fixedly connected to the output end of the flip electric push rod (12), the connection between the first fixed plate (141) and the second fixed plate (142) is hinged to the frame housing, and the lower end of the second fixed plate (142) is fixedly connected to the flip connecting plate, and the flip connecting plate is fixedly connected to the elevator body (1).

8. The electric elevator according to claim 7, characterized in that: The angle between the first fixing plate and the second fixing plate is an obtuse angle. When the flip mechanism is not flipped, the second fixing plate is in a vertical downward position. When the flip mechanism is flipped, the output shaft of the flipping electric push rod (12) extends downward, and the second fixing plate rotates to a horizontal position, so that the elevator body (1) is flipped 90 degrees, and the bracket of the elevator is rotated from a vertical upward position to a horizontal position.

9. The electric elevator according to claim 8, characterized in that: The second fixing plate (142) is provided with an opening groove (143) extending vertically downwards, one end of the flip connection plate is fixed to the opening groove by a bolt, and the other end of the flip connection plate is connected to the elevator body (1).

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