Blowout preventer moving and overturning device

Abstract

The invention discloses a blowout preventer moving and overturning device, and relates to the technical field of blowout preventer hoisting mechanisms. The track is mounted on the base; the moving trolley is movably mounted on the track; the turnover mechanism is mounted on the transfer trolley; the bracket trolley is movably mounted on the track; the turnover mechanism comprises a turnover hydraulic cylinder, the bottom end of the turnover hydraulic cylinder is hinged to the migration trolley, and the piston end of the turnover hydraulic cylinder extends out of the upper surface of the migration trolley; one end of the overturning frame is hinged to the upper surface of the moving trolley, and the bottom side of the overturning frame is matched with the piston rod end of the overturning hydraulic cylinder; the guide sleeve is mounted on the upper surface of the roll-over stand; the technical problem that the safety of an overturning device is not enough when an existing blowout preventer set is hoisted is solved.

Description

Technical Field

[0001] The invention relates to the technical field of a blowout preventer hoisting mechanism, in particular to a blowout preventer moving and turning device. Background Art

[0002] Blowout preventers are heavy devices that need to be moved, installed, disassembled, flipped over as a whole, and transported during oil and gas drilling. Therefore, special equipment is required as a platform for split installation, disassembly, and pressure testing.

[0003] At present, the combination of BOPs for domestic oil drilling with a depth of less than 4000m generally adopts 3 combinations (four-way + double gate + ring) and 4 combinations (four-way + double gate + single gate + ring). Usually, the 3-combination BOP group adopts the method of overall installation, overall disassembly and overall transportation. During the overall lifting and disassembly process, the BOP weighing more than 20 tons and 4 to 5 meters in height is flipped from the vertical state to the horizontal state, or from the horizontal state to the vertical state by pulling with the rope below (or crane-assisted oblique lifting) from the top. This operation violates the operating regulations that the lifting equipment cannot be lifted obliquely, and there are great safety hazards and risks. For the 4-combination BOP group, the method of split installation, split disassembly and split transportation is adopted, which increases the operation links and operation risks. In particular, for the double-gate BOP that needs to be flipped to a flat position, it is now necessary to pull with a rope and the crane to pull obliquely when flipping, which violates the crane operating regulations and is an illegal operation. For the blowout preventer that is far away from the blowout preventer hoist, the crane needs to be lifted again, or the blowout preventer hoist and the guy rope are operated at the same time. During this process, the blowout preventer hoist is tilted and lifted at an angle, which is a violation of regulations.

[0004] For many years, the installation, removal and transportation of blowout preventer groups have always been high-risk jobs in the oil drilling industry, with personal injuries and even fatalities occurring every year. Summary of the invention

[0005] The purpose of the present invention is to provide a mobile flipping device for a blowout preventer, which solves the technical problem that the flipping device of the blowout preventer group is not safe enough during hoisting in the prior art.

[0006] The embodiment of the present application discloses a blowout preventer mobile flipping device, comprising: Base; A track, mounted on the base; A transport trolley, movably mounted on the track; A turning mechanism is installed on the transport trolley; A bracket trolley, movably mounted on the track; The turning mechanism comprises: A tilting hydraulic cylinder, the bottom end of which is hinged to the transport trolley, and the piston end of which extends out of the upper surface of the transport trolley; A turning frame, one end of which is hinged to the upper surface of the transport trolley, and the bottom side of the turning frame cooperates with the piston rod end of the turning hydraulic cylinder; The guide sleeve is installed on the upper surface of the turning frame.

[0007] The present application sets up a flipping mechanism, and utilizes an articulated flipping hydraulic cylinder to provide an initial thrust for flipping, so as to push the center of gravity of the blowout preventer group through the rotation point, so that the blowout preventer crane bears the minimum load in the traveling direction, thereby ensuring the safety of the operation.

[0008] Based on the above technical solution, the embodiment of the present application can also be improved as follows: Furthermore, the flipping mechanism further comprises: A positioning seat, mounted on the turning frame; A tension spring, one end of which is connected to the positioning seat; A connecting component is installed on the flip hydraulic cylinder, and the connecting component is connected to the other end of the tension spring. The beneficial effect of adopting this step is that the activity area of ​​the flip hydraulic cylinder can be controlled by the tension spring.

[0009] Furthermore, a limit plate is installed on the bottom side of the flip frame, and a spherical pit is provided on the limit plate to cooperate with the piston rod of the flip hydraulic cylinder. The beneficial effect of adopting this step is that the spherical pit can ensure that the flip hydraulic cylinder can better push the flip frame to move.

[0010] Furthermore, the transport trolley is provided with a brake mechanism cooperating with the track; The brake mechanism comprises: A brake frame, mounted on the bottom of the transport trolley; A seat plate, mounted on a side of the brake frame; A baffle plate is mounted on a side of the seat plate away from the brake frame; A forward and reverse threaded screw rod vertically passes through the seat plate; The double brake plates are installed at intervals on the forward and reverse screws, and the double brake plates are located below the seat plate, and the track is located between the double brake plates. The beneficial effect of adopting this step is that the brake plates can clamp or loosen the track by rotating the forward and reverse screws.

[0011] Furthermore, a wrench is installed at the upper end of the positive and negative threaded rod, and a wrench locking hole is opened on the wrench along the circumferential direction; The seat plate is provided with a plurality of seat plate locking holes spaced apart in the circumferential direction, and a locking pin is provided in any of the wrench locking holes and the corresponding seat plate locking hole. The beneficial effect of adopting this step is that the locking pin is used to limit the position, so as to ensure stability during braking.

[0012] Furthermore, an anti-deviation hook cooperating with the track is provided at the bottom of the bracket trolley. The beneficial effect of adopting this step is to prevent the bracket trolley from deflecting, thereby ensuring the working stability of the entire device.

[0013] Furthermore, a limit seat is installed on the base, and the limit seat is located on the side of the transport trolley away from the bracket trolley. The beneficial effect of adopting this step is that the limit seat can ensure that the transport trolley will not fall off the track.

[0014] Furthermore, it also includes a sling assembly, and the sling assembly is located outside the transport trolley. The beneficial effect of adopting this step is that the sling assembly can be used to better achieve lifting.

[0015] Furthermore, the sling assembly comprises: A cardboard assembly, wherein a card-mounting hole is provided in the middle of the cardboard assembly, and the cardboard assembly is assembled from two cardboards; A connecting plate, mounted on the card assembly by bolts; A lifting lug is installed on the pallet assembly, and the lifting lug is perpendicular to the assembly line of the pallet assembly; The shackle is installed on the lifting lug. The beneficial effect of this step is that the lifting lug is designed to facilitate better subsequent flipping.

[0016] Furthermore, the sling assembly further comprises: A push-pull rod is rotatably mounted on the outer side of one of the card boards of the card board assembly; A locking rod, mounted on the outer side of another cardboard of the cardboard assembly; The hook head push-pull rod has one end that cooperates with the locking rod and the other end that cooperates with the push-pull rod. The beneficial effect of adopting this step is that the opening and closing part facilitates the subsequent better clamping. One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: 1. The present application designs the flipping mechanism to reduce the load borne by the BOP crane in the walking direction and minimize the load. This operation mode changes the original illegal operation mode of oblique hanging and guy wire pulling during the installation and disassembly of the whole and split parts of the BOP group, and is safer.

[0017] 2. This application also designs the sling assembly to adjust the installation direction of the lifting lug, and designs an opening and closing mechanism (including a push-pull rod, a locking rod and a hook push-pull rod) to drive the opening and closing of the professional sling during installation, which can improve the efficiency of the installation.

[0018] 3. The present application designs the brake mechanism to ensure stable braking of the transport vehicle.

[0019] 4. The present application is also designed with a positioning seat, a tension spring, a limit plate and a spherical pit, so that the flip hydraulic cylinder can move within a specified range, which can ensure the stable coordination of the subsequent flip frame and the flip hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of a mobile flipping device for a blowout preventer according to a specific embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure of the intermediate transport trolley and the turning mechanism; Figure 3 for Figure 2 A schematic diagram of the structure from another angle; Figure 4 for Figure 1 The structural diagram of the middle brake mechanism; Figure 5 for Figure 4 A cross-sectional view of the middle brake mechanism; Figure 6 for Figure 4 Schematic diagram of the structure of the middle seat plate; Figure 7 for Figure 1 A schematic diagram of the structure of the middle spreader assembly; Figure 8 Schematic diagram when working for this application; Fig. 9 A schematic diagram of the application of the flip hydraulic cylinder pushing the center of gravity of the blowout preventer through the rotation point; Reference numerals: 1-base; 2-track; 3-transport trolley; 4-turning mechanism; 5-braking trolley; 6-brake mechanism; 7-anti-deviation hook; 8-limiting seat; 9-hanging device assembly; 401-turn hydraulic cylinder; 402-turn frame; 403-guide sleeve; 404-positioning seat; 405-tension spring; 406-limiting plate; 407-spherical pit; 408-connecting assembly; 601-brake frame; 602-seat plate; 603-baffle plate; 604-positive and negative screws; 605-double brake plate; 606-wrench; 607-wrench locking hole; 608-seat plate locking hole; 609-locking pin; 901-clip plate assembly; 902-clip hole; 903-connecting plate; 904-lifting ear; 905-shackle; 906-push-pull rod; 907-locking rod; 908-hook push-pull rod. DETAILED DESCRIPTION

[0022] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention. It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0023] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] Example: like Figure 1-7 As shown, an embodiment of the present application discloses a mobile flipping device for a blowout preventer. The flipping device is designed to carry the blowout preventer through a transport trolley and a bracket trolley in the flipping device, and then the blowout preventer is pushed to tilt through a flipping mechanism, and then hoisted by a hoisting device and flipped.

[0026] like Figure 1-3 As shown, the specific structure of this application includes: Base 1, which is a conventional base; Tracks 2 are installed on the base 1. The tracks 2 are preferably two tracks, which are arranged at intervals and are used to provide movement trajectories for subsequent transport trolleys and bracket trolleys; The transport trolley 3 is movably mounted on the track 2. The transport trolley 3 moves along the track 2. The power source thereof may be an additional power source, or a push hydraulic cylinder may be installed on the base 1. The push mechanism in the application number 201920779119.1 is used for pushing to realize step-by-step movement. A turning mechanism 4 is installed on the transport trolley 3, and the turning mechanism 4 provides an initial thrust for turning the blowout preventer group as a whole, and pushes the center of gravity of the blowout preventer group through the rotation point; The bracket trolley 5 is movably mounted on the track 2. The bracket trolley 5 mainly plays a supporting role and cooperates with the subsequent flipping. The bracket trolley 5 and the transport trolley 3 in this application are equipped with rollers that match the track at the bottom. They are existing mechanisms and will not be described here. The flipping mechanism 4 in the present application is further described. The flipping mechanism 4 in the present application includes: A tilting hydraulic cylinder 401, the bottom end of which is hinged to the transport trolley 3, and the piston end of which extends out of the upper surface of the transport trolley 3; A turning frame 402, one end of which is hinged to the upper surface of the transport trolley 3, and the bottom side of the turning frame 402 cooperates with the piston rod end of the turning hydraulic cylinder 401; The guide sleeve 403 is installed on the upper surface of the turning frame 4 .

[0027] Specifically, the bottom of the flip hydraulic cylinder 401 is hinged, so that the flip hydraulic cylinder 401 can rotate to a certain extent during operation, thereby better pushing the flip frame 402; at the same time, the guide sleeve 403 guides the bolts between the flip frame 402 and the blowout preventer flange, making the assembly more stable.

[0028] In order to ensure that the flipping hydraulic cylinder 401 can better support the bottom side of the flipping frame 402, a limit plate 406 with a spherical pit 407 can be provided on the bottom side of the flipping frame 402. The spherical pit of the limit plate 406 cooperates with the piston end of the flipping hydraulic cylinder 401 to ensure the stability of the support.

[0029] like Figure 3 As shown, in order to prevent the overturning hydraulic cylinder 401 from rotating too far, the present application is also provided with a corresponding limiting component. Specifically, the overturning mechanism 4 also includes: A positioning seat 404 is installed on the flip frame 402; A tension spring 405, one end of which is connected to the positioning seat 404; The connecting component 408 is installed on the flip hydraulic cylinder 401, and the connecting component 408 is connected to the other end of the tension spring 405. The connecting component 408 in the present application is composed of other components such as the tension spring connecting screw and the tension spring connecting fork. The tension spring 405 can prevent the flip hydraulic cylinder 401 from rotating too much, that is, it cannot ensure that the piston rod of the flip hydraulic cylinder 401 is matched with the spherical pit of the limit plate 407.

[0030] After the transport trolley 3 moves to a certain position, it needs to be braked and positioned. Therefore, the present application installs a brake mechanism 6 that cooperates with the track 2 on the transport trolley 3 to achieve brake positioning. The brake mechanism 6 can be two brake mechanisms located on both sides of the transport trolley 3 respectively.

[0031] Specifically, Figure 4 , 5 As shown in , 6, the brake mechanism 6 in the present application includes: A brake frame 601 is installed at the bottom of the transport trolley 3, and the brake frame 601 can be fixed to the transport trolley 3 by bolts; The seat plate 602 is installed on the side of the brake frame 601. The seat plate 602 is convenient for the installation of subsequent screws and other components, and is also used for connecting the installation of the brake plate; A baffle 603 is installed on a side of the base plate 602 away from the brake frame 601, and the baffle 603 is used to complete the subsequent position limiting of the brake plate; The forward and reverse screw rod 604 vertically passes through the seat plate 602. The rotation of the forward and reverse screw rod 604 can drive the subsequent double brake plate to move in both directions. The double brake plates 605 are installed at intervals on the forward and reverse screws 604, and the double brake plates 605 are located below the seat plate 602, and the track 2 is located between the double brake plates; the double brake plates 605 are two brake plates, which are arranged at intervals up and down and are respectively installed on the positive thread and the negative thread of the forward and reverse screws 604; when in use, by twisting the forward and reverse screws 604, the forward and reverse brake plates can be moved towards or in the opposite direction.

[0032] In order to better adjust the positive and negative threaded rod 604, the present application installs a wrench 606 on the upper end of the positive and negative threaded rod 604, and a wrench locking hole 607 is opened on the wrench 606 along the circumferential direction; The seat plate 602 is provided with a plurality of seat plate locking holes 608 spaced apart in the circumferential direction, and a locking pin 609 is provided in any of the wrench locking holes 607 and the corresponding seat plate locking hole 608; when the brake mechanism 6 needs to be locked or loosened, the wrench 606 is twisted to move the double brake plate 605 to a certain position, and then the locking pin 609 is inserted into the seat plate locking hole 608 and the wrench locking hole 607 to complete the locking.

[0033] The brake mechanism 6 can also achieve a certain anti-bias effect, that is, to prevent the transport trolley 3 from tipping over or deflecting. Similarly, the bottom of the bracket trolley 5 is provided with an anti-bias hook 7 that cooperates with the track 2. The anti-bias hook 7 is a slotted block with the slot facing inward, which can play a certain anti-bias effect.

[0034] In order to prevent the transport trolley 3 from detaching from the track 2 during movement, that is, moving beyond the end of the track 2, the present application installs a limit seat 8 on the base 1, and the limit seat 8 is located on the side of the transport trolley 3 away from the bracket trolley 5. The limit seat 8 is used to limit the transport trolley 3 and control its movement distance.

[0035] The present application is to realize the lifting of the blowout preventer, therefore, the present application also includes a lifting device assembly 9 , and the lifting device assembly 9 is located outside the transport trolley 3 .

[0036] like Figure 7 As shown, the sling assembly 9 is a pallet sling, which is designed for better flipping and hoisting. The specific structure includes: A cardboard assembly 901, wherein a cardboard hole 902 is provided in the middle of the cardboard assembly 901. The cardboard assembly 901 is assembled from two cardboards. When in use, the cardboard hole 902 of the cardboard assembly 901 is used to card the blowout preventer; The connecting plate 903 is installed on the clamping plate assembly 901 by bolts. After the clamping plate is clamped with the blowout preventer, it is fixed by the connecting plate 903 to ensure the stability of the clamping plate assembly 901; A lifting lug 904 is installed on the cardboard assembly 901, and the lifting lug 904 is perpendicular to the assembly line of the cardboard assembly 901; The shackle 905 is installed on the lifting ear 904; compared with the existing pallet hanger, the present application changes the installation direction of the lifting ear 904 to adjust it to a vertical direction, which is convenient for subsequent flipping.

[0037] In order to improve the efficiency of card board installation, the present application also sets the following components: A push-pull rod 906 is rotatably mounted on the outer side of one of the cardboards of the cardboard assembly 901; A locking rod 907, mounted on the outer side of another cardboard of the cardboard assembly 901; The hook push-pull rod 908 cooperates with the locking rod 907 at one end and with the push-pull rod 906 at the other end, which is conducive to the rapid assembly of the card assembly 901. The hook push-pull rod 908 is provided with a hole, and the push-pull rod 906 is also provided with a hole, and then limited by a locking pin.

[0038] When in use, the push-pull rod 906 and the hook push-pull rod 908 can be used to roughly assemble the card assembly 901. After the blowout preventer is clamped, the connecting plate 903 is installed to achieve accurate assembly of the card assembly 901, thereby achieving rapid assembly.

[0039] like Figure 8 , 9 As shown, further description is given for this application: Working principle: 1. First install the present application and the BOP group on the lower part of the drilling platform base, and then adjust the hanger assembly in the present application to the annular BOP position of the spray painting group; 2. Connect the corresponding hydraulic pipelines to ensure the normal operation of the corresponding hydraulic system. Release the brake mechanism, use the push mechanism to push the transport trolley 3 of the present application to move, so that the transport trolley and the blowout preventer group can be lifted vertically by the blowout preventer hoist, extend the piston of the flip hydraulic cylinder, and then control the hoist assembly to slowly lift the blowout preventer group, and at the same time, the push mechanism slowly pushes the transport trolley. When the annular blowout preventer of the blowout preventer group leaves the bracket trolley by 0.2 to 1m, move the bracket trolley to the end of the track, and then continue to lift the blowout preventer group and push the transport trolley to a horizontal angle of 80° and stop. At this time, the center of gravity of the blowout preventer group has passed the turning point of the flap pin shaft; slowly retract the piston of the flip hydraulic cylinder, and at the same time, the push mechanism slowly pushes the transport trolley until the blowout preventer group is completely vertically upright; even remove the connecting bolts between the blowout preventer flange and the flip frame, and the blowout preventer hoist lifts the blowout preventer group to the wellhead position, and installs the connecting bolts.

[0040] The disassembly process of the blowout preventer group is the opposite of the installation process.

[0041] This application can better complete the installation of blowout preventer components, because the blowout preventer components are installed in the original position on the front tension beam of the drilling platform base, which is difficult to hoist and requires rope dragging to be in place. At the same time, the installation position is small, and the operator's standing operating space is small, which affects work efficiency and safe operation. Using this device as a platform for the installation of blowout preventer components, it can be installed in the middle of the device, and the lifting point is far away from the edge of the drilling platform, so there will be no safety risks caused by the lifting rope and the edge of the drilling platform. After the blowout preventer group is installed, the transport trolley is pushed by the pushing mechanism to send the blowout preventer group to a position where the blowout preventer hoist can be lifted, solving the problems of difficult lifting and hidden safety hazards in operation.

[0042] The innovative points of this application include at least the following: 1. The present application designs a flipping mechanism to give the blowout preventer group an initial thrust for flipping the entire group, and pushes the center of gravity of the blowout preventer group past the rotation point, so that the blowout preventer crane bears the minimum load in the walking direction. This operation method changes the original illegal operation method of oblique hanging and pulling with ropes during the installation and disassembly of the entire and split parts of the blowout preventer group.

[0043] 2. The present application also designs the hanger assembly to meet the reasonable rotation when the blowout preventer group is turned over. The opening and closing mechanism (including push-pull rods, locking rods and hook push-pull rods) drives the opening and closing of the professional hanger during installation, which can make the two plates of the hanger close quickly and align the bolt holes, making it easy to install the connecting bolts. The ear plate holes of the previous special hanger were in the longitudinal direction. When the blowout preventer was turned over, the shackle pin and the ear plate were subjected to eccentric load and unreasonable force, which would cause cracks in the ear plate weld.

[0044] 3. The present application designs the brake mechanism to ensure the stability of the transport trolley when installed in the middle of the track. The brake mechanism uses upper and lower brake plates connected by a screw with positive and negative buckles. The screw is fixed axially by a slot, and the other end of the screw is connected to the nut through a pin. Turning the screw can make the upper and lower brake plates open and close symmetrically at the same time. When braking is needed, turn the screw with positive and negative buckles for braking. The screw drives the upper and lower brake plates to close at the same time, engaging the track I-beam wing plate to generate friction, i.e., braking force. The screw is locked by combining a hexagonal wrench with a hole and a multi-hole plate. The minimum hole spacing is selected and locked by a pin connection.

[0045] 4. The present application is also designed with a positioning seat, a tension spring, a limit plate and a spherical pit, so that the flip hydraulic cylinder can move within a specified range, ensuring that the piston of the flip hydraulic cylinder can move during the extension process, and the piston head can remain in place after it is separated from the flip frame, so as to catch the flap again and complete the buffering action.

[0046] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A mobile flipping device for a blowout preventer, characterized in that: include: Base (1); A track (2) mounted on the base (1); A transport trolley (3) movably mounted on the track (2); A turning mechanism (4) is installed on the transport trolley (3); A bracket trolley (5) movably mounted on the track (2); The turning mechanism (4) comprises: A tilting hydraulic cylinder (401), wherein the bottom end of the tilting hydraulic cylinder (401) is hinged to the transport trolley (3), and the piston end of the tilting hydraulic cylinder (401) extends out of the upper surface of the transport trolley (3); A turning frame (402), one end of which is hinged to the upper surface of the transport trolley (3), and the bottom side of the turning frame (402) cooperates with the piston rod end of the turning hydraulic cylinder (401); The guide sleeve (403) is mounted on the upper surface of the turning frame (402).

2. The mobile flipping device for blowout preventer according to claim 1 is characterized in that: The turning mechanism (4) further comprises: A positioning seat (404) is installed on the turning frame (402); A tension spring (405), one end of which is connected to the positioning seat (404); A connecting component (408) is installed on the tilting hydraulic cylinder (401), and the connecting component (408) is connected to the other end of the tension spring (405).

3. The mobile flipping device for blowout preventer according to claim 2 is characterized in that: A limit plate (406) is installed on the bottom side of the tilting frame (402), and a spherical recess (407) is provided on the limit plate (406) for cooperating with the piston rod of the tilting hydraulic cylinder (401).

4. The BOP mobile flipping device according to claim 1, characterized in that: The transport trolley (3) is provided with a brake mechanism (6) that cooperates with the track (2); The brake mechanism (6) comprises: A brake frame (601) is installed at the bottom of the transport vehicle (3); A seat plate (602) mounted on a side of the brake frame (601); A baffle (603) is mounted on a side of the seat plate (602) away from the brake frame (601); A forward and reverse threaded screw (604) vertically passes through the seat plate (602); The double brake plates (605) are installed at intervals on the forward and reverse screws (604), and the double brake plates (605) are located below the seat plate (602), and the track (2) is located between the double brake plates (605).

5. The BOP mobile flipping device according to claim 4, characterized in that: A wrench (606) is mounted on the upper end of the forward and reverse threaded rod (604), and a wrench locking hole (607) is provided on the wrench (606) along the circumferential direction; A plurality of seat plate locking holes (608) are provided on the seat plate (602) at intervals along the circumferential direction, and a locking pin (609) is provided in any of the wrench locking holes (607) and the seat plate locking hole (608) corresponding thereto.

6. The BOP mobile flipping device according to claim 1, characterized in that: The bottom of the bracket trolley (5) is provided with an anti-deflection hook (7) that matches the track (2).

7. The BOP mobile flipping device according to claim 1, characterized in that: A limit seat (8) is installed on the base (1), and the limit seat (8) is located on a side of the transport trolley (3) away from the bracket trolley (5).

8. The BOP moving and flipping device according to claim 1, characterized in that: It also includes a sling assembly (9), wherein the sling assembly (9) is located outside the transport trolley (3).

9. The BOP moving and turning device according to claim 8, characterized in that: The sling assembly (9) comprises: A cardboard assembly (901), wherein a card-mounting hole (902) is provided in the middle of the cardboard assembly (901), and the cardboard assembly (901) is assembled from two cardboards; A connecting plate (903) is mounted on the clamping plate assembly (901) by means of bolts; A lifting lug (904) is installed on the cardboard assembly (901), and the lifting lug (904) is perpendicular to an assembly line of the cardboard assembly (901); The shackle (905) is mounted on the lifting eye (904).

10. The mobile flipping device for blowout preventer according to claim 9, characterized in that: The sling assembly (9) further comprises: A push-pull rod (906) is rotatably mounted on the outer side of one of the card boards of the card board assembly (901); A locking rod (907) is mounted on the outer side of another cardboard of the cardboard assembly (901); A hook push-pull rod (908) has one end that cooperates with the locking rod (907) and the other end that cooperates with the push-pull rod (906).

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