Movable double self-locking blowout preventer maintenance platform

Abstract

The present application discloses a movable double self-locking blowout preventer maintenance platform in the field of petroleum machinery and equipment technology, aiming to solve the problem of unsafe self-locking of the maintenance platform in the prior art. It includes: an operating platform, a scissor arm, a lifting drive mechanism, and a self-locking component; a horizontal slide groove is arranged at the bottom of the operating platform, the horizontal slide groove has a lower opening, and the first supporting end of the scissor arm is slidably arranged in the horizontal slide groove; the self-locking component includes a rack and a rotating locking member; the rack is located in the horizontal slide groove, and one end of the rack is hinged to the first supporting end of the scissor arm; the rotating locking member is connected to the bottom of the operating platform, and the lock head of the rotating locking member can rotatably lock the rack. The maintenance platform of the present application can be installed at a low position as a whole and move as a whole in the front and rear directions. In addition, a mechanical self-locking component is arranged at the operating platform position of the maintenance platform of the present application, which constitutes a double insurance with the self-locking component of the oil cylinder, thereby improving the safety of the operation of the operating platform.

Description

Technical Field

[0001] The present application relates to the technical field of petroleum machinery and equipment, and in particular to a movable double self-locking blowout preventer maintenance platform. Background Art

[0002] At the oil drilling site, a drilling blowout preventer is usually installed as a well control equipment. When installing and repairing the blowout preventer, the operation process is usually carried out within a range of 4m to 8m from the foundation surface of the drilling rig. It is an aerial operation and requires a blowout preventer maintenance platform. The blowout preventer maintenance platform is mainly divided into manual mechanical, electric mechanical and hydraulic scissor types; the manual mechanical and electric mechanical blowout preventer maintenance platforms have similar structures, such as: an adjustable blowout preventer maintenance platform with application number CN201910099884.3 and an electric blowout preventer maintenance platform with application number CN202111340331.6, both of which include a translation guide rail, a ladder guide rail, a lifting platform, an operating platform, and a cylinder. The difference between them is that the lifting power is different. CN201910099884.3 is a manual mechanical type, and a hand-operated hoist is used to lift the operating platform. CN202111340331.6 is an electric mechanical type, which uses an electric winch to lift the operating platform through a wire rope guide; the hydraulic scissor-type blowout preventer maintenance platform with application number CN201921763804.1 consists of support legs, retractable arms, a lifting base, an arm and a workbench. Installation only requires connection to the base, which is convenient and simple.

[0003] However, the above devices still have some shortcomings. The shortcomings of the above-mentioned equipment are that the lifting and lowering of the blowout preventer maintenance platform of CN201910099884.3, CN202111340331.6, and CN201921763804.1 are only self-locked by the one-way valve of the oil cylinder, and there is a safety risk of the workbench falling if the one-way valve of the oil cylinder is damaged; CN201910099884.3 and CN202111340331.6 need to be lifted to a high position on the maintenance platform operating table for installation. Due to the high ladder guide rail, the small installation space at the bottom of the base, and the many installation components of the blowout preventer maintenance platform, the installation process is relatively cumbersome; the blowout preventer maintenance platform of CN201910099884.3, CN202111340331.6, and CN201921763804.1 cannot be adjusted and moved forward and backward as a whole, and thus cannot adapt to the maintenance operation requirements of blowout preventers of different sizes.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Utility Model Content

[0005] In view of the above problems, the present application provides a movable double self-locking blowout preventer maintenance platform, which can improve the safety of the maintenance platform in use through the double self-locking of the maintenance platform.

[0006] To achieve the purpose of this application, this application provides the following technical solutions:

[0007] In a first aspect, the present application provides a movable double self-locking blowout preventer maintenance platform, characterized in that it comprises: an operating platform, a scissor arm, a lifting drive mechanism, and a self-locking assembly; the scissor arm is connected to the lifting drive mechanism, and is used to lift the operating platform under the drive of the lifting drive mechanism; a horizontal slide groove is arranged at the bottom of the operating platform, the horizontal slide groove has a lower opening, and the first supporting end of the scissor arm is slidably arranged in the horizontal slide groove;

[0008] The self-locking assembly comprises: a rack and a rotating locking member; wherein:

[0009] The rack is located in the horizontal slide groove, and one end of the rack is hinged to the first supporting end of the scissor arm;

[0010] The rotation locking member is connected to the bottom of the operating table, and the rotation lock head of the rotation locking member can rotationally lock the rack.

[0011] In a possible implementation, the rotation locking member includes: a rotating shaft, a pedal, and an elastic member; the pedal is connected to the rotating shaft, and one end of the elastic member is connected to the pedal to keep the rotation locking head against the rack.

[0012] In a possible implementation, the rotating locking member includes: a foot box; the rotating shaft is connected to the foot box, the foot box is connected to the bottom of the operating table, and the elastic member is connected to the foot box.

[0013] In a possible implementation, the lifting drive mechanism is a lifting cylinder, and the lifting cylinder is a self-locking cylinder.

[0014] In a possible implementation, it further includes: a supporting device and a translation device for supporting the scissor arms;

[0015] The translation device comprises: a translation block, an adjusting screw and a sliding rod; the adjusting screw is connected to a base; the adjusting screw and the sliding rod penetrate the translation block in a direction parallel to the ground; and a roller is installed at the bottom of the supporting device.

[0016] In a possible implementation, the translation device further includes a translation ear plate, the translation ear plate is fixed inside the translation block, and the sliding rod passes through the translation ear plate along a direction parallel to the ground.

[0017] In a possible implementation, the support device further includes a support beam and a support leg;

[0018] The supporting legs are connected to the support beam via a rotating shaft, and the upper end of the support beam is connected to the scissor arm.

[0019] In a possible implementation, the self-locking assembly further includes a limit pin;

[0020] The operating table slide is provided with a plurality of limit holes which are distributed at equal distances, and the limit pins cooperate with different limit holes.

[0021] In a possible implementation, the method further includes: turning a cylinder;

[0022] The upper end of the tilting cylinder is connected to the support beam; the lower end of the tilting cylinder is connected to the base.

[0023] Beneficial effects:

[0024] 1. The utility model realizes double self-locking of the inspection platform by arranging self-locking components at the position of the operating platform and the scissor arm, and the lifting cylinder is a self-locking cylinder. When the inspection platform is self-locked, the self-locking component and the lifting cylinder are in a self-locking state at the same time. At this time, even if the self-locking component in the lifting cylinder is damaged, the self-locking component still remains self-locking, avoiding safety accidents caused by the falling of the operating platform and improving the safety of the inspection platform.

[0025] 2. The utility model can be installed at a low position as a whole by arranging the scissor arms, the lifting cylinder and the supporting device, thus avoiding the problems of slow installation speed and unsafe installation during high-position installation.

[0026] 3. The utility model realizes the movement of the maintenance platform in the front and back directions by setting a translation device. The utility model realizes the flipping of the maintenance platform by setting a flip cylinder. The problem of difficulty in carrying out maintenance work due to the inflexible position of the maintenance platform is solved. The maintenance platform of the utility model can meet the use requirements of maintenance work of blowout preventers of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation to the present application.

[0028] Figure 1 It is a structural schematic diagram of a high-level working state provided by an embodiment of the present application;

[0029] Figure 2 It is a structural schematic diagram of a low-level working state provided by an embodiment of the present application;

[0030] Figure 3 It is a schematic diagram of the structure of the flip state provided by the embodiment of the present application;

[0031] Figure 4This is a schematic diagram of a structure viewed from above in a working state provided by an embodiment of the present application;

[0032] Figure 5 The embodiment of this application provides Figure 1 The structural diagram of the AA section view in FIG.

[0033] Figure 6 The embodiment of this application provides Figure 1 Schematic diagram of the structure of Ⅰ enlarged;

[0034] Figure 7 The embodiment of this application provides Figure 1 Schematic diagram of the enlarged structure of Ⅱ;

[0035] Description of reference numerals:

[0036] 1. Operating table, 2. Scissor arm, 3. Lifting cylinder, 4. Support beam, 5. Leg, 501. Roller, 6. Translation device, 601. Translation block, 602. Translation ear plate, 603. Slide rod, 604. Adjusting screw, 605. Adjusting nut, 7. Self-locking assembly, 701. Rack, 702. Rotation locking member, 703. Elastic member, 704. Foot box, 705. Limit hole, 706. Limit pin, 8. Flip cylinder, 9. Base. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of this application, unless otherwise specified, "plurality" means two or more.

[0039] Example 1

[0040] Figure 1-7A movable double self-locking blowout preventer maintenance platform provided in the embodiment of the present application includes an operating platform 1, a scissor arm 2, a translation device 6, a self-locking component 7, a tilting cylinder 8, a base 9, and a supporting device; the supporting device also includes a support beam 4, a leg 5, and a roller 501; the translation device 6 includes a translation block 601, a translation ear plate 602, a slide bar 603, and an adjusting screw 604; the self-locking component 7 includes a rack 701, a rotating locking member 702, an elastic member 703, a foot box 704, and a limit pin 706; the self-locking component 7 connects the scissor arm 2 and the operating platform 1; a pedal is provided on the top of the rotating locking member 702, and a lock is provided on the bottom, and the pedal and the lock are connected by a rotating shaft; the rack 701 moves in a slide groove opened at the bottom of the operating platform 1; the lock is engaged with the rack 701; the scissor arm 2 is connected to the lifting cylinder 3.

[0041] In a possible implementation, one end of the elastic member 703 is connected to the lock, and the other end is connected to the pedal in the foot box 704; since the elastic member 703 has a tensioning effect, when there is no external interference, the weight of the rack itself is relatively large, and the lock is embedded in the gap between the two teeth of the rack 701, so that the rack 701 can only slide in one direction. The rack is hinged to the supporting end of the scissor arm 2; the unidirectional sliding of the rack 701 is set to slide in the extension direction of the scissor arm 2, and the extension of the scissor arm 2 raises the operating platform 1; therefore, when there is no external interference, the position of the operating platform 1 will not drop, ensuring the safety of the maintenance platform 1. When the operating platform 1 needs to be lowered, the toothed lock is disengaged from the gap between the two teeth of the rack 701 by stepping on the rotating locking member 702, so that the rack 701 can slide in both directions; at the same time, the lifting cylinder 3 contracts, so that the operating platform 1 is lowered; only when the rack 701 can slide in both directions and the lifting cylinder 3 contracts at the same time, the operating platform 1 can be lowered. In this way, the operating platform 1 is doubly self-locked to ensure the safety of the operating platform;

[0042] Specifically, the lifting cylinder 3 has an external remote control, which can remotely control the extension and retraction of the lifting cylinder 3;

[0043] Specifically, a slide groove is provided at the upper left end of the support beam 4 and the lower left end of the operating table 1, and the bottom end and the top side arm of the scissor arm 2 can move in the slide groove, so as to facilitate the extension or contraction of the scissor arm 2 and limit the extension or contraction of the scissor arm 2;

[0044] Specifically, the elastic member 703 may be configured as a spring, a belt or other member having a tensioning effect;

[0045] Specifically, the rack is hinged to the left supporting end of the scissor arm 2;

[0046] In a possible implementation, a plurality of limit holes 705 are provided on the bottom slide of the operating platform 1 and are distributed at equal distances. The limit pins 706 can be inserted into different limit holes 705, and the rack 701 can be limited in different strokes. Thus, the total height of the operating platform 1 can be limited in advance, and the maintenance platform can be adjusted to a fixed height conveniently. This can meet the maintenance requirements of the working space at the bottom of the maintenance platform; it can also prevent the maintenance staff from hitting the ceiling due to the excessive height of the rise.

[0047] Specifically, the lifting drive mechanism is a lifting cylinder 3, and the lifting cylinder 3 can be set as a hydraulic self-locking cylinder, and can also be set as other lifting cylinders with self-locking components.

[0048] In a possible embodiment, the upper end of the translation device 6 is connected to the supporting device; the adjusting screw 604 and the sliding rod 603 penetrate the translation block 601 in a direction parallel to the ground; the rotating adjusting screw 604 drives the sliding rod 603 to penetrate the translation block 601 and move in a direction parallel to the ground; the translation ear plate 602 is fixed inside the translation block 601, and the sliding rod 603 penetrates the translation ear plate 602 and slides relative to the translation block 601, and the overall front-to-back translation of the maintenance platform is achieved through the movement of the translation device 6.

[0049] Specifically, four translation ear plates 602 are provided, which are fixed at the upper and lower ends of the inner sides of the two surfaces perpendicular to the translation block 601 and the slide bar 603; a lubricating oil groove or a sliding bearing is provided between the translation ear plate 602 and the slide bar 603 to ensure smooth sliding between the two;

[0050] Specifically, an adjusting nut 605 is arranged between the translation block 601 and the adjusting lead screw 604, and the adjusting nut 605 and the adjusting lead screw 604 form a lead screw nut pair transmission structure; multiple sets of lead screw nut pair transmission structures, sliding rods 603 and translation ear plates 602 are arranged to ensure that the translation device 6 operates stably when the operating table is translated;

[0051] Specifically, the left side of the support beam 4 is connected to the translation device, and a roller 501 is installed at the bottom of the leg 5. The leg 5 is provided with two legs, which are installed at the lower end of the right side of the support beam 4 by means of a rotating shaft; the roller is pried by a crowbar to make it roll;

[0052] In a possible implementation, the upper end of the tilting cylinder 8 is connected to the supporting device, and the lower end is connected to the translation device 6. The tilting cylinder 8 is extended to realize the flipping of the inspection platform; when the inspection platform flips, the rotating shaft rotates to keep the legs 5 vertical to the ground, saving ground space; at this time, the translation device is moved to realize the movement of the inspection platform in the flipped state;

[0053] In a possible implementation, the translation device 6 is connected to the base 9. Specifically, the side end of the translation device 6 and the base 9 can be welded; specifically, the base 9 is not a structure on the maintenance platform, and the position of the base 9 is not fixed; when the maintenance platform is installed, it is connected to the base 9 of the external component; therefore, the maintenance platform can be used flexibly.

[0054] Working principle:

[0055] (1) Double self-locking of the inspection platform

[0056] The lifting cylinder 3 is a self-locking cylinder, which can realize the first level of anti-fall self-locking of the lifting and lowering of the operating platform 1. The self-locking component 7 can realize the second level of self-locking of the operating platform 1. Specifically, during the lifting process of the operating platform 1, through the tensioning effect of the elastic member 703, the locking head of the rotating locking member 702 is embedded in the gap between the two teeth of the rack 701, so that the rack 701 can only slide in one direction; the rack 701 is connected to the scissor arm 2, and the rack 701 can only slide and extend in one direction toward the scissor arm 2, that is, slide in the direction of raising the operating platform 1; the rack 701 cannot shrink toward the scissor arm 2 to make the operating platform 1 slide in the direction of lowering, that is, to realize the mechanical self-locking during the lifting process of the operating platform 1;

[0057] During the descent of the operating platform 1, the locking head is separated from the gap between the two teeth of the rack 701 by stepping on the rotating locking member 702, so that the rack 701 can slide in both directions. At this time, the scissor arm 2 can achieve its own contraction through the extension and retraction of the lifting cylinder 3, so that the operating platform 1 can be lowered. If the lifting cylinder 3 fails during the lifting and lowering of the operating platform 1, the operator only needs to lift his foot, the elastic member 703 will be tightened, and the toothed locking head of the rotating locking member 702 will quickly return to the gap between the two teeth of the rack 701, thereby locking the height of the operating platform 1. A plurality of limiting holes 705 are set on the bottom slide of the operating platform 1, and the limiting pins 706 are inserted into different limiting holes 705, so that the rack 701 can be limited to different strokes, thereby limiting the total height of the operating platform 1 in advance.

[0058] (2) Movement of the inspection platform in an upside-down upright position

[0059] like Figure 3 As shown, the operating table is turned over by extending the turning cylinder 8, and the legs are also turned over and close to the bottom of the support beam. At this time, the screw 604 is rotated to make the translation block 601 slide on the slide bar 603, thereby driving the entire inspection table connected to the translation block 601 to move, and the operating table as a whole completes the movement in the flipped upright state.

[0060] (3) Movement of the operating table in the low position

[0061] When the operating table is in the low position, Figure 2As shown, the low-position working state requires the support leg 5 to maintain a vertical position relationship with the support beam 4 to bear the gravity of the upper operating platform. The self-locking component 7 at the connection between the scissor arm 2 and the operating platform 1 is in an un-self-locking state. That is, the toothed lock head is separated from the gap between the two teeth of the rack 701, and the rack 701 can slide in both directions. At this time, the self-locking component 7 does not limit the position of the operating platform 1. The lifting cylinder 3 on the scissor arm 2 is retracted, and the scissor arm 2 is in a retracted state. At this time, the operating platform 1 is in a low-position state; the translation of the low-position working state requires the simultaneous control of the movement of two positions, one position is the translation device 6, by rotating the adjustment screw 604 on the translation device 6, the translation block 601 slides on the slide bar 603, and the other position is the support leg 5, by prying the roller 501 with a crowbar, the support leg 5 moves, and drives the movement of the operating platform 1. When the above two positions are moved at the same time, the entire maintenance platform 1 can be moved; thereby, the movement of the operating platform 1 in the low-position state is completed.

[0062] In the embodiments provided in the present application, it should be understood that the disclosed systems, modules and methods can be implemented in other ways. For example, the module embodiments described above are only schematic, for example, the division of units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, modules or units, which can be electrical, mechanical or other forms.

[0063] The above embodiments are only used to illustrate the technical solution of the present application, but not to limit it. The present application is not limited to the exact structure described above and illustrated in the accompanying drawings, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, various changes and modifications made without departing from the concept of the present application should be deemed to belong to the protection scope of the present application.

Claims

1. A movable double self-locking blowout preventer maintenance platform, characterized in that: include: An operating table (1), a scissor arm (2), a lifting drive mechanism, and a self-locking component (7); the scissor arm (2) is connected to the lifting drive mechanism and is used to lift the operating table (1) under the drive of the lifting drive mechanism; a horizontal slide groove is arranged at the bottom of the operating table (1), the horizontal slide groove has a lower opening, and the first supporting end of the scissor arm (2) is slidably arranged in the horizontal slide groove; The self-locking assembly (7) comprises: a rack (701) and a rotation locking member (702); wherein: The rack is located in the horizontal slide groove, and one end of the rack is hinged to the first supporting end of the scissor arm (2); The rotating locking member (702) is connected to the bottom of the operating table (1), and the rotating lock head of the rotating locking member (702) can rotate and lock the rack (701).

2. The inspection platform according to claim 1, characterized in that: The rotating locking member (702) comprises: a rotating shaft, a pedal, and an elastic member (703); the pedal is connected to the rotating shaft, and one end of the elastic member (703) is connected to the pedal to keep the rotating lock head against the rack (701).

3. The inspection platform according to claim 2, characterized in that: The rotating locking member (702) comprises: a foot rest box (704); the rotating shaft is connected to the foot rest box (704), the foot rest box (704) is connected to the bottom of the operating table (1), and the elastic member (703) is connected to the foot rest box (704).

4. The inspection platform according to claim 1, characterized in that: The lifting drive mechanism is a lifting cylinder (3), and the lifting cylinder (3) is a self-locking cylinder.

5. The inspection platform according to claim 1, characterized in that: Also includes: A supporting device and a translation device (6) for supporting the scissor arm (2); The translation device (6) comprises: a translation block (601), an adjusting screw (604), and a sliding rod (603); the adjusting screw (604) is connected to a base (9); the adjusting screw (604) and the sliding rod (603) penetrate the translation block (601) in a direction parallel to the ground; and a roller (501) is installed at the bottom of the support device.

6. The inspection platform according to claim 5, characterized in that: The translation device (6) further comprises a translation ear plate (602), the translation ear plate (602) being fixed inside the translation block (601), and the sliding rod (603) penetrating the translation ear plate (602) in a direction parallel to the ground.

7. The inspection platform according to claim 5, characterized in that: The supporting device further comprises a supporting beam (4) and supporting legs (5); The supporting legs (5) are connected to the support beam (4) via a rotating shaft, and the upper end of the support beam (4) is connected to the scissor arm (2).

8. The inspection platform according to claim 2, characterized in that: The self-locking component (7) further comprises a limiting pin (706); The operating table (1) has a plurality of limit holes (705) on the slide groove which are distributed at equal distances, and the limit pins (706) cooperate with different limit holes (705).

9. The inspection platform according to claim 7, characterized in that: Also includes: Turning cylinder (8); The upper end of the tilting cylinder (8) is connected to the support beam (4); the lower end of the tilting cylinder (8) is connected to the base (9).

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