A translational lifting maintenance platform

Abstract

This invention discloses a translational lifting maintenance platform, relating to the technical field of blowout preventer (BOP) maintenance devices. It includes: at least two translational mechanism support assemblies spaced apart; at least two cross arms, each correspondingly mounted on one of the translational mechanism support assemblies; multiple maintenance platform assemblies, each correspondingly mounted on the top of the cross arms; and several translational latching units. Each translational latching unit is positioned between any two adjacent maintenance platform assemblies, with one end movably mounted to the end of one maintenance platform assembly and the other end connected to the end of another maintenance platform assembly. This application solves the technical problem of existing BOP maintenance platforms having unadjustable dimensions and poor applicability.

Description

Technical Field

[0001] This invention relates to the field of blowout preventer maintenance equipment, and more particularly to a translational lifting maintenance platform. Background Technology

[0002] The blowout preventer (BOP) maintenance platform is mainly used as a maintenance platform when the internal components of the BOP malfunction or are damaged during the drilling process.

[0003] There are many types of blowout preventers (BOPs). Since the maximum installation height of a BOP is approximately 6 meters, in the past, when a BOP was damaged, on-site personnel used escalators to climb up and perform repairs (the maximum height is approximately 6 meters). However, this method of escalator-based repairs required a large number of personnel, was inefficient, and posed significant safety hazards. Later, based on demand, some manufacturers designed BOP maintenance platforms. However, these platforms are usually fixed-size platforms that cannot be adjusted, lack versatility, and cannot meet maintenance requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a translational lifting maintenance platform, which solves the technical problems of existing blowout preventer maintenance platforms having unadjustable dimensions and poor applicability.

[0005] This application discloses a translational lifting maintenance platform, comprising:

[0006] At least two translational mechanism support components are spaced apart;

[0007] At least two cross arms are installed one-to-one on the translation mechanism support assembly;

[0008] Multiple inspection platform components are installed one-to-one on the top of the cross arm;

[0009] A plurality of translational latching units are provided, wherein the translational latching units are disposed between any two adjacent maintenance bench assemblies, one end of the translational latching unit is movably installed at the end of one of the maintenance bench assemblies, and the other end is engaged with the end of the other maintenance bench assembly.

[0010] This application features a translational latch unit. After the spacing between the components of the maintenance platform is adjusted, the components are locked using this translational latch unit, which facilitates maintenance by staff and improves safety.

[0011] Based on the above technical solution, the embodiments of this application can be further improved as follows:

[0012] Furthermore, the translational latch unit includes:

[0013] The first articulated arm is connected at one end to the end of the maintenance platform assembly via a pin.

[0014] One end of the lever is movably connected to the other end of the first crank arm;

[0015] The second curved arm is movably connected at the top to the other end of the pull rod, and at the bottom to the end of the inspection platform assembly via a pin.

[0016] The first long shaft is mounted on top of the second crank arm;

[0017] At least two third curved arms are mounted at intervals on the first long shaft;

[0018] At least two buckles are installed one-to-one at the end of the third crank arm;

[0019] The latch seat unit is installed on the platform base and is connected to the latch. The advantage of this step is that multiple curved arms cooperate with each other to achieve translation of the latch, thereby achieving locking.

[0020] Furthermore, the translational latch unit also includes a push rod, which is connected to the first curved arm. The advantage of this step is that the push rod facilitates operation by the staff.

[0021] Furthermore, the maintenance bench assembly includes:

[0022] Floating platform unit;

[0023] The surrounding rails are spaced apart on the sides of the floating platform unit;

[0024] The floating platform unit includes:

[0025] Two floating platforms are set in parallel intervals;

[0026] Two movable platforms are movably installed on the platform base in a one-to-one correspondence. One of the movable platforms is equipped with the translational latch unit; the other movable platform is equipped with a crossbar. The translational latch unit and the crossbar respectively cooperate with the crossbar and translational latch unit installed on the two movable platforms of the maintenance platform assembly located on the other side of the blowout preventer.

[0027] The movement of the movable platform on the platform base increases or decreases the distance between the movable platform equipped with the translational latch unit and the movable platform equipped with the corresponding crossbar that cooperates with the translational latch unit. The beneficial effect of this step is that the movable platform can realize the change of the platform unit size.

[0028] Furthermore, the floating platform unit also includes:

[0029] A fixed rack is installed on the top of the floating platform, and the fixed rack extends along the length direction of the floating platform;

[0030] A rack and pinion positioning component is installed on the movable floating platform, and the end of the rack and pinion positioning component engages with the fixed rack. The beneficial effect of this step is that locking can be achieved through the mutual cooperation of the rack and pinion positioning component and the fixed rack.

[0031] Furthermore, the rack positioning member includes:

[0032] The rack is fitted with one side of the fixed rack.

[0033] The movable block is connected at one end to the mating rack, and at the other end is mounted on the movable platform via a spring seat;

[0034] The lifting pedal is hinged to the movable platform, and the end of the lifting pedal engages with the bottom of the movable block. The advantage of this step is that by lifting and lowering the pedal, the height of the rack can be changed under the combined action of the spring force, thereby completing the locking and unlocking.

[0035] Furthermore, the translation mechanism support assembly includes:

[0036] Support;

[0037] A translation mechanism, one end of which is connected to the support;

[0038] The base is connected to the other end of the translation mechanism;

[0039] The enclosed telescopic spiral support leg is installed at the end of the base away from the support. The beneficial effect of this step is that the enclosed telescopic spiral support leg can achieve the support and level adjustment of the base.

[0040] Furthermore, the translation mechanism includes:

[0041] The active frame is hinged at one end to the support and at the other end to the base;

[0042] The translational hydraulic cylinder is connected at one end to the support and at the other end to the drive frame;

[0043] The connecting frame has one end connected to the support and the other end hinged to the base. The connecting frame and the active frame are parallel to each other.

[0044] The locking unit is connected to the support at one end and to the active frame at the other end. The advantage of this step is that the locking unit can be used to lock the active frame and thus constrain it.

[0045] Furthermore, the locking unit includes:

[0046] A telescopic rod, one end of which is connected to the support;

[0047] The telescopic sleeve has one end connected to the base and the other end engaged with the telescopic rod. The telescopic sleeve has an expansion joint.

[0048] The clamp assembly is installed on the telescopic sleeve. The advantage of this step is that the telescopic sleeve and the clamp assembly cooperate with each other to achieve the locking of the telescopic sleeve.

[0049] Furthermore, the enclosed telescopic spiral outrigger includes:

[0050] Chassis;

[0051] The inner square tube is installed on the chassis;

[0052] The outer square tube is fitted onto the inner square tube;

[0053] A trapezoidal nut is installed inside the outer square tube, and the trapezoidal nut is located above the inner square tube;

[0054] A trapezoidal screw is installed on the outer square tube and extends into the inner square tube. The trapezoidal screw cooperates with the trapezoidal nut. The beneficial effect of this step is that the corrosion resistance can be improved through the outer square tube.

[0055] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0056] 1. This application designs a translation mechanism support component that can translate, thereby adjusting the spacing between adjacent maintenance platform components. This can accommodate blowout preventer assemblies of different sizes, thereby improving maintenance efficiency.

[0057] 2. This application adopts a clamp-type locking mechanism, which can lock the telescopic sleeve, thereby completing the locking after the translation mechanism is adjusted, thus ensuring stability.

[0058] 3. This application designs a closed telescopic spiral outrigger, which can improve its corrosion resistance and thus ensure the service life of this application.

[0059] 4. This application is equipped with a translational latching unit with a small translational amplitude, which is suitable for operation in the space between the gate blowout preventer, thereby improving the applicability of this application. Attached Figure Description

[0060] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0061] Figure 1 This is a schematic diagram of the structure of a translational lifting maintenance platform according to a specific embodiment of the present invention;

[0062] Figure 2 for Figure 1 Schematic diagram of the structure of the central support and translation mechanism;

[0063] Figure 3 for Figure 1 Schematic diagram of the central locking unit;

[0064] Figure 4 for Figure 1 Schematic diagram of a closed telescopic spiral outrigger;

[0065] Figure 5 for Figure 1 Schematic diagram of the structure of the central floating platform unit;

[0066] Figure 6 for Figure 1 A schematic diagram of the middle rack positioning component;

[0067] Figure 7 for Figure 1 Schematic diagram of the translational snap fastener unit;

[0068] Figure label:

[0069] 1-Translational mechanism support assembly; 2-Cross arm; 3-Maintenance platform assembly; 4-Floating platform unit; 5-Translational latch unit; 6-Wall; 7-Horizontal bar;

[0070] 101-Support; 102-Translation mechanism; 103-Base; 104-Enclosed telescopic spiral outrigger; 105-Active frame; 106-Translation hydraulic cylinder; 107-Connecting frame; 108-Locking unit; 109-Telescopic rod; 110-Telescopic sleeve; 111-Expansion joint; 112-Clamp assembly; 113-Chassis; 114-Inner square tube; 115-Outer square tube; 116-Trapezoidal nut; 117-Trapezoidal screw;

[0071] 401-Floating platform base; 402-Movable floating platform; 403-Fixed rack; 404-Rack positioning component; 405-Matching rack; 406-Moving block; 407-Spring seat; 408-Lifting pedal;

[0072] 501-First crank arm; 502-Pull rod; 503-Second crank arm; 504-First long shaft; 505-Third crank arm; 506-Hook and latch; 507-Hook and latch seat unit; 508-Push rod. Detailed Implementation

[0073] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0074] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0075] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral part, or a hinged connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0076] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0077] Example:

[0078] like Figure 1-7 As shown in the figure, this application discloses a translational lifting maintenance platform that can adjust its size and position to meet the operational needs of different types of blowout preventer assemblies.

[0079] like Figure 1 As shown, the specific structure of this application includes:

[0080] At least two translation mechanism support components 1 are arranged at intervals. The translation mechanism support component 1 is a position adjustable component, specifically, it is capable of translation to complete position adjustment within a small range.

[0081] At least two cross arms 2 are installed one-to-one on the translation mechanism support assembly 1. The cross arm 2 is a telescopic component, and a telescopic hydraulic cylinder is installed inside it. The telescopic hydraulic cylinder is used to raise and lower the cross arm 2, which can realize the vertical position adjustment, thereby realizing the adjustment of the height position of the maintenance platform.

[0082] Multiple inspection platform assemblies 3 are installed one-to-one on the top of the cross arm 2. The inspection platform assembly 3 can move up and down as the cross arm 2 moves.

[0083] A plurality of translational latching units 5 are provided, wherein the translational latching units 5 are disposed between any two adjacent maintenance bench assemblies 3, one end of the translational latching unit 5 is movably installed at the end of one of the maintenance bench assemblies 3, and the other end is connected and engaged with the end of the other maintenance bench assemblies 3.

[0084] The inspection platform assembly 3 in this application moves up and down under the drive of the cross arm 2. After reaching the designated position, it pushes at both ends of the two corresponding floating platform units 4, so that the two corresponding floating platform units 4 come together. After being adjusted to a certain position, it is locked by the translational latch unit 5.

[0085] In actual operation, the end of the translational latch unit 5 used for cooperation is first lifted and pulled backward by the push rod 508. After the distance between the two corresponding floating platform units 4 is adjusted, the push rod 508 is pushed forward and lowered to lock, thereby completing the connection of the two corresponding floating platform units 4.

[0086] When the translational latch unit 5 is in operation, one end is hinged and the other end is engaged. The floating platform unit 4 of one maintenance platform assembly 3 is hinged to the translational latch unit 5, and the floating platform unit 4 of the other maintenance platform assembly 3 is provided with a crossbar for engaging.

[0087] Specifically, such as Figure 7 As shown, the translational latch unit 5 includes:

[0088] The first curved arm 501 is connected at one end to the end of the inspection platform assembly 3 via a pin. The specific connection method is a shaft, which allows it to swing around the pin.

[0089] One end of the pull rod 502 is movably connected to the other end of the first crank arm 501;

[0090] The second curved arm 503 is movably connected at its top to the other end of the pull rod 502, and at its bottom to the end of the inspection platform assembly 3 via a pin; that is, the first curved arm 501, the pull rod 502 and the second curved arm 503 cooperate with each other to form a translation mechanism similar to a parallelogram, that is, when one end of the pull rod 502 moves, it can drive the other end of the pull rod 502 to move.

[0091] A first long shaft 504 is mounted on the top of the second crank arm 503, and the first long shaft 504 can move together with the rotation of the second crank arm 503;

[0092] At least two third curved arms 505 are mounted at intervals on the first long shaft 504, and the third curved arms 505 are able to move with the first long shaft 504;

[0093] At least two buckles 506 are installed one-to-one at the end of the third curved arm 505. The buckle 506 has multiple grooves on the bottom side of the end away from the third curved arm 505, so as to cooperate with the crossbar of the floating platform unit to form a snap-fit ​​structure.

[0094] The latch seat unit 507 is installed on the inspection platform assembly 3 and is connected to the latch 506. The latch seat unit 507 includes a hinge seat and a horizontal shaft. After the horizontal shaft passes through the latch 506, it is connected to the hinge seat. This allows both latches 506 to move at the same time, which can better complete the snap-fit ​​of the two corresponding floating platform units 4.

[0095] To further explain the movement of the latch seat unit 507, the bottom side of the latch 506 is provided with a groove, and the maintenance platform assembly that cooperates with the end of the latch seat unit 507 is provided with multiple crossbars, so that a snap-fit ​​can be formed, that is, after the spacing of the floating platform unit 4 is adjusted, the snap-fit ​​can be formed to ensure stability.

[0096] To facilitate stable movement of the translational latch unit 5, such as Figure 7 As shown, this application also includes a push rod 508, which is specifically connected to the first crank arm 501. In this way, only the foot needs to drive the push rod 508 to move, which can drive the buckle 506 to move, thereby simplifying the movement process.

[0097] The maintenance platform assembly 3 in this application includes several platform units 4 for providing a standing function, so as to facilitate the stable work of relevant personnel. In order to further improve safety, the maintenance platform assembly 3 in this application is also provided with a guardrail 6, which is spaced apart on the side of the platform unit 4.

[0098] like Figure 5 As shown, the platform unit 4 in this application can achieve length adjustment, and its specific structure includes:

[0099] Two floating platform bases, 401, are set in parallel intervals;

[0100] Two movable platforms 402 are movably installed on the platform base 401 in a one-to-one correspondence, that is, the movable platforms 402 are slidably installed on the platform base 401. One of the movable platforms 402 is equipped with the translational latch unit 5; the other movable platform 402 is equipped with a crossbar 7. The translational latch unit 5 and the crossbar 7 respectively cooperate with the crossbar 7 and translational latch unit 5 installed on the two movable platforms 402 of the platform unit 4 of the maintenance platform assembly 3 located on the other side of the blowout preventer.

[0101] The movement of the movable platform 402 on the platform base 401 increases or decreases the distance between the movable platform 402 on which the translational latch unit 5 is installed and the movable platform (402) on which the corresponding crossbar 7 that cooperates with the translational latch unit 5 is installed.

[0102] Specifically, sliding grooves are provided on both sides of the floating platform 401, and protrusions that cooperate with the sliding grooves are provided on both sides of the movable floating platform 402 to achieve sliding; this enables the adjustment of the position of the movable floating platform 402.

[0103] In this application, the movable platform 402 is specifically locked by the engagement of a rack and pinion. After the movable platform 402 moves to the corresponding position, it is locked by the engagement of the rack and pinion.

[0104] like Figure 5 As shown, the floating platform unit 4 further includes:

[0105] A fixed rack 403 is installed on the top of the floating platform 401 and extends along the length of the floating platform 401. The fixed rack 403 is used to provide the trajectory of motion.

[0106] A rack and pinion positioning member 404 is installed on the movable platform 402, and the end of the rack and pinion positioning member 404 cooperates with the fixed rack 403. That is, after the movable platform 402 moves to a certain position, the rack and pinion positioning member 404 and the fixed rack 403 cooperate and lock together.

[0107] The distribution of the fixed rack 403 and the rack positioning element 404 can be as follows: When a floating platform unit 4 includes one fixed rack 403 and one rack positioning element 404, the fixed racks 403 in the floating platform units 4 of the adjacent maintenance platform assemblies are diagonally distributed, thus forming a diagonal locking; when a floating platform unit 4 includes two fixed racks 403 and two rack positioning elements 404, they correspond one-to-one, and one fixed rack 403 is used to lock one moving floating platform.

[0108] Specifically, such as Figure 6 As shown, the rack positioning member 404 includes:

[0109] The rack 405 is fitted with the fixed rack 403 on one side;

[0110] The movable block 406 is connected at one end to the mating rack 405, and the other end is mounted on the movable platform 402 via a spring seat 407.

[0111] The lifting pedal 408 is hinged to the movable platform 402, and the end of the lifting pedal 408 engages with the bottom of the movable block 406.

[0112] Further explanation of the rack and pinion positioning component 404: the mating rack 405 of the rack and pinion positioning component 404 rises and disengages from the fixed rack 403. At this time, the movable platform 402 can move back and forth. After reaching the position, the mating rack 405 falls down and locks with the fixed rack 403, thus ensuring the stability of the movable platform 402. The spring seat 407 in this application is an existing component used to reset the movable block 406. The end of the lifting pedal 408 abuts against the bottom of the movable block 406. When the lifting pedal 408 is pressed, the movable block 406 is lifted, thereby lifting the mating rack 405 and disengaging it from the fixed rack 403. Thus, the movable platform 402 can slide freely. Conversely, the movable platform 402 is locked.

[0113] The translational mechanism support component 1 in this application can achieve a certain degree of adjustment, specifically, such as... Figure 1 As shown, the translation mechanism support assembly 1 includes:

[0114] Support 101, which is an existing support;

[0115] The translation mechanism 102 is connected to the support 101 at one end. The translation mechanism 102 can move laterally, thereby driving the entire maintenance platform assembly 3 to move laterally.

[0116] The base 103 is connected to the other end of the translation mechanism 102;

[0117] A closed telescopic spiral support leg 104 is installed at the end of the base away from the support 101.

[0118] Further explanation is provided regarding the translation mechanism 102, specifically including:

[0119] The active frame 105 is hinged at one end to the support 101 and at the other end to the base 103;

[0120] The translational hydraulic cylinder 106 is connected at one end to the support 101 and at the other end to the active frame 105;

[0121] The connecting frame 107 is connected to the support 101 at one end and hinged to the base 103 at the other end. The connecting frame 107 and the active frame 105 are parallel to each other.

[0122] The locking unit 108 is connected at one end to the support 101 and at the other end to the active frame 105. Specifically, the active frame 105 is driven by the translational hydraulic cylinder 106, which in turn drives the connecting frame 107 to move. After reaching the corresponding position, the locking unit 108 locks the frame, thereby ensuring the stability of the translational mechanism support assembly 1.

[0123] To ensure stable support when the translation mechanism 102 moves to a certain position, such as... Figure 3 As shown, this application designs a locking unit 108, which includes:

[0124] Telescopic rod 109, one end of which is connected to the support 101;

[0125] The telescopic sleeve 110 is connected to the base 103 at one end and cooperates with the telescopic rod 109 at the other end. The telescopic sleeve 110 is provided with an expansion joint 111.

[0126] The clamp assembly 112 is installed on the telescopic sleeve 110, wherein the telescopic rod 109 is movably disposed in the telescopic sleeve 110 to form a telescopic structure. After reaching the corresponding position, the clamp assembly 112 locks the expansion joint 111, thereby enabling the telescopic rod 109 and the telescopic sleeve 110 to cooperate with each other and complete the locking, thus completing the locking of the telescopic sleeve 110 and the telescopic rod 109.

[0127] Among them, the clamp assembly 112 is an existing clamp component, including a lower clamp, an upper clamp, and a locking bolt, etc., which is mainly used to lock the telescopic sleeve 110.

[0128] To prevent corrosion of the enclosed telescopic spiral outrigger 104, this application requires a design that adds an outer square tube to form a protective layer. The specific structure is as follows: Figure 4 As shown, it includes:

[0129] Chassis 113, preferably a disc structure;

[0130] The inner square tube 114 is installed on the chassis 113;

[0131] The outer square tube 115 is sleeved on the inner square tube 114;

[0132] A trapezoidal nut 116 is installed inside the outer square tube 115, and the trapezoidal nut 116 is located above the inner square tube 114;

[0133] A trapezoidal screw 117 is installed on the outer square tube 115 and extends into the inner square tube 114. The trapezoidal screw 117 cooperates with the trapezoidal nut 116. In this application, the trapezoidal screw 117 is located inside the inner square tube 114. When the trapezoidal screw 117 rotates, the outer square tube 115 moves upward, thereby adjusting the height of the closed telescopic spiral support leg.

[0134] Further explanation is provided regarding this application:

[0135] This application uses a translation mechanism, in which the opposing movement of the translation mechanism support component 1 is also achieved through its internal translation mechanism. Then, the position of the top maintenance platform component can be adjusted through the cross arm, which improves the convenience and safety of maintenance.

[0136] Because the dimensions of different blowout preventer combinations will vary, the position and dimensions of the inspection platform also need to be adjusted.

[0137] Specifically, the adjustments were made through the following institutions:

[0138] 1. Translation mechanism in the translation mechanism support assembly:

[0139] Driven by the translational hydraulic cylinder, the active frame can be rotated, thereby realizing the simultaneous movement of the corresponding base and maintenance platform components. This adjusts the distance between the maintenance platform components 3. After adjustment, the distance between the two corresponding floating platform units 4 is adjusted, and locking is completed through components such as the translational latch unit 5 and the rack and pinion positioning component 404.

[0140] During the adjustment of the translation mechanism, this application utilizes the expansion joint of the telescopic sleeve for adjustment. A 1mm gap is maintained between the outer wall of the telescopic rod and the inner wall of the telescopic sleeve, allowing the telescopic rod to move freely within the sleeve. After movement, it is locked by a clamp assembly. Specifically, the upper clamp of the clamp assembly has a threaded hole, into which the handle screw is screwed. The end of the handle screw has a hole, which is connected to a nut with an opening via a cotter pin, allowing the nut and handle screw to rotate simultaneously. When the handle screw is tightened (clockwise), it presses the upper and lower clamps against the upper and lower parts of the telescopic sleeve opening, simultaneously pressing the telescopic rod. The telescopic rod and the telescopic sleeve cannot move relative to each other, achieving the locking function. When the handle screw is loosened (counterclockwise), the upper and lower clamps loosen, allowing the telescopic rod to move back and forth within the telescopic sleeve. When the translation mechanism needs to be driven, the handle screw is loosened; when positioning is required, the handle screw is tightened.

[0141] 2. Enclosed telescopic spiral outriggers:

[0142] The enclosed telescopic spiral outrigger in this application includes a trapezoidal screw, screw seat, locking plate A, locking plate B, locking pin, thrust bearing, trapezoidal nut, inner square tube, outer square tube, support connecting plate, outrigger disc, force-adding rod assembly, fixing pin, etc.

[0143] The trapezoidal screw is connected to the rotating sleeve by a fixing pin. The rotating sleeve is welded to the locking plate A. The outer square tube is welded to the screw seat and the support connecting plate. The screw seat is welded to the locking plate B. A thrust bearing is installed inside the screw seat. The upper part of the inner square tube is welded to the trapezoidal nut and the support disc.

[0144] Locking plates A and B are designed with many staggered holes, the centers of which are all on the same central circle. After rotating them relative to each other, they can always find very close concentric holes. Locking pins of different diameters are inserted into the aligned holes of locking plates A and B to achieve locking and positioning. The locking pins are designed with steps for easy removal.

[0145] When the lever rotates counterclockwise, it drives the screw to rotate, causing the trapezoidal nut to move the inner square tube downwards, raising the support leg. Conversely, the support leg lowers. When the support leg reaches the designated position, the locking pin is inserted and positioned through the alignment holes of locking plate A and locking plate B.

[0146] Enclosed telescopic spiral outriggers solve the problem of easy rust and corrosion of the screw rods of non-sealed spiral outriggers, especially in field operations, such as the use of maintenance platforms in oil drilling wellhead environments. Because drilling mud often falls from the wellhead, and the mud contains high levels of corrosive media, it is very easy to cause corrosion of the equipment. The screw rods of enclosed telescopic spiral outriggers are sealed inside the inner square tube, preventing mud from splashing onto the screw rods, thus effectively solving the problem of rust and inability to rotate.

[0147] 3. Translational latch unit:

[0148] The translational latch unit connects two adjacent movable platforms. When working on the maintenance platform, the front and rear platforms need to be connected to form a single unit. By moving the push rod forward, the first crank arm pushes the pull rod forward. Then, through the action of the second crank arm, the first long shaft, and the third crank arm, as well as the latch connecting rod and latch seat unit, the latch is pushed forward to achieve translational rotation. The latch hook engages with the crossbar, and through the rack and pinion positioning component, it cooperates with the fixed rack to complete the connection of the platforms. The translational latch unit in this application has a small translational amplitude, making it suitable for operation in the small space between the gate valve blowout preventer.

[0149] 4. Rack and pinion positioning device:

[0150] The rack and pinion positioning device enables positioning between the movable platform and the platform base. The device consists of a lifting pedal, a mating rack, a movable block, a spring, a spring seat, a fixing screw, a guide nut, a double-eared seat, and connecting bolts.

[0151] The guide nut and double-ear seat are welded and fixed in place. The lifting pedal is connected to the double-ear seat via a pin and can rotate around the pin. The spring is fixed and compressed in its initial position by a fixing bolt spring seat, and the fixing screw is screwed into the guide nut completely. The movable block is connected to the mating rack by a connecting bolt. In the initial position, under the action of the spring force, the movable block causes the mating rack to be in a low position and engage with the fixed rack fixed on the floating platform base, restricting longitudinal movement and achieving longitudinal positioning. When the lifting pedal is pressed, the lifting pedal rotates and lifts the movable block, allowing it to move upward along the guide nut. At this time, the spring is compressed, and the movable block moves upward with the mating rack. The mating rack disengages from the fixed rack, allowing the floating platform and floating platform base to move longitudinally.

[0152] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0153] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0154] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A translational lifting maintenance platform, characterized in that, include: At least two sets of translation mechanism support components (1) are set at intervals; At least two cross arms (2) are installed one-to-one on the translation mechanism support assembly (1). The cross arms (2) are telescopic components, and telescopic hydraulic cylinders are installed inside them. The telescopic hydraulic cylinders are used to raise and lower the cross arms (2). Multiple inspection platform components (3) are installed one-to-one on the top of the cross arm (2); A plurality of translational latching units (5) are provided between any two adjacent maintenance bench assemblies (3). One end of the translational latching unit (5) is movably installed at the end of one of the maintenance bench assemblies (3), and the other end is connected and cooperated with the end of the other maintenance bench assembly (3). The maintenance bench assembly (3) includes: Floating platform unit (4); The surrounding rods (6) are spaced apart on the side of the floating platform unit (4); The floating platform unit (4) includes: Two floating platforms (401) are set in parallel intervals; Two movable platforms (402) are movably installed on the platform base (401) in a one-to-one correspondence. One of the movable platforms (402) is equipped with the translational latch unit (5), and the other movable platform (402) is equipped with a crossbar (7). The translational latch unit (5) and the crossbar (7) respectively cooperate with the crossbar (7) and the translational latch unit (5) installed on the two movable platforms (402) of the platform unit (4) of the maintenance platform assembly (3) located on the other side of the blowout preventer. The movement of the movable platform (402) on the platform base (401) increases or decreases the distance between the movable platform (402) on which the translational latch unit (5) is installed and the movable platform (402) on which the corresponding crossbar (7) is installed to cooperate with the translational latch unit (5).

2. The translational lifting maintenance platform according to claim 1, characterized in that, The translational latch unit (5) includes: The first articulated arm (501) is connected at one end to the end of the maintenance bench assembly (3) via a pin. One end of the pull rod (502) is movably connected to the other end of the first crank arm (501); The second articulated arm (503) is movably connected at the top to the other end of the pull rod (502), and at the bottom to the end of the inspection platform assembly (3) via a pin. The first long shaft (504) is mounted on top of the second crank arm (503); At least two third crank arms (505) are mounted at intervals on the first long shaft (504); At least two buckles (506) are installed one-to-one at the end of the third crank arm (505); The latch seat unit (507) is installed on the inspection bench assembly (3), and the latch seat unit (507) is connected to the latch (506).

3. The translational lifting maintenance platform according to claim 2, characterized in that, The translational latch unit (5) also includes a push rod (508), which is connected to the first crank arm (501).

4. The translational lifting maintenance platform according to claim 3, characterized in that, The floating platform unit (4) also includes: A fixed rack (403) is installed on the top of the floating platform (401), and the fixed rack (403) extends along the length direction of the floating platform (401); A rack positioning component (404) is installed on the movable platform (402), and the end of the rack positioning component (404) engages with the fixed rack (403).

5. The translational lifting maintenance platform according to claim 4, characterized in that, The rack positioning element (404) includes: The rack (405) is fitted with the fixed rack (403) on one side; The movable block (406) is connected at one end to the mating rack (405), and at the other end is mounted on the movable platform (402) via a spring seat (407); The lifting pedal (408) is hinged to the movable platform (402), and the end of the lifting pedal (408) engages with the bottom of the movable block (406).

6. The translational lifting maintenance platform according to claim 1, characterized in that, The translation mechanism support assembly (1) includes: Support (101); The translation mechanism (102) is connected at one end to the support (101); The base (103) is connected to the other end of the translation mechanism (102); A closed telescopic spiral support leg (104) is installed on the base (103) at the end away from the support (101).

7. The translational lifting maintenance platform according to claim 6, characterized in that, The translation mechanism (102) includes: The active frame (105) is hinged at one end to the support (101) and at the other end to the base (103); The translational hydraulic cylinder (106) is connected at one end to the support (101) and at the other end to the active frame (105); The connecting frame (107) is connected at one end to the support (101) and at the other end to the base (103). The connecting frame (107) and the active frame (105) are parallel to each other. The locking unit (108) is connected at one end to the support (101) and at the other end to the active frame (105).

8. The translational lifting maintenance platform according to claim 7, characterized in that, The locking unit (108) includes: Telescopic rod (109), one end of which is connected to the support; The telescopic sleeve (110) is connected to the base (103) at one end and to the telescopic rod (109) at the other end. The telescopic sleeve (110) has an expansion joint (111). The clamp assembly (112) is installed on the telescopic sleeve (110).

9. The translational lifting maintenance platform according to claim 8, characterized in that, The enclosed telescopic spiral outrigger (104) includes: Chassis (113); The inner square tube (114) is installed on the chassis (113); The outer square tube (115) is sleeved on the inner square tube (114); A trapezoidal nut (116) is installed inside the outer square tube (115), and the trapezoidal nut (116) is located above the inner square tube (114); A trapezoidal screw (117) is installed on the outer square tube (115) and extends into the inner square tube (114). The trapezoidal screw (117) is engaged with the trapezoidal nut (116).

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