CN116374916B - Lifting platform device for inspection and maintenance of blowout preventer of drilling machine - Google Patents
Lifting platform device for inspection and maintenance of blowout preventer of drilling machine Download PDFInfo
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- CN116374916B CN116374916B CN202310667366.3A CN202310667366A CN116374916B CN 116374916 B CN116374916 B CN 116374916B CN 202310667366 A CN202310667366 A CN 202310667366A CN 116374916 B CN116374916 B CN 116374916B
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- 238000007689 inspection Methods 0.000 title claims abstract description 11
- 238000012423 maintenance Methods 0.000 title claims abstract description 11
- 238000005553 drilling Methods 0.000 title claims abstract description 7
- 230000008878 coupling Effects 0.000 claims abstract description 15
- 238000010168 coupling process Methods 0.000 claims abstract description 15
- 238000005859 coupling reaction Methods 0.000 claims abstract description 15
- 230000005611 electricity Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 56
- 230000007246 mechanism Effects 0.000 claims description 17
- 239000010720 hydraulic oil Substances 0.000 claims description 12
- 230000008439 repair process Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims 3
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
- B66F11/042—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations actuated by lazy-tongs mechanisms or articulated levers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F13/00—Common constructional features or accessories
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The application discloses a lifting platform device for inspection and maintenance of a blowout preventer of a drilling machine, and relates to the technical field of oil exploitation. The utility model provides a be used for rig preventer to examine maintenance lift platform device, including symmetrical distribution's supporting seat, the supporting seat of symmetrical distribution all articulates there is the link, the supporting seat is provided with control terminal, be provided with the preventer body between the link of symmetrical distribution, link sliding connection has the sliding block, one side rigid coupling that the sliding block is close to adjacent supporting seat has symmetrical distribution's dead lever, the supporting seat articulates there is the hydraulic push rod who is connected with the control terminal electricity, hydraulic push rod's flexible end is articulated with the dead lever, the link is less than the distance that hydraulic push rod flexible end and the articulated department of dead lever to the supporting seat with the articulated department of supporting seat. When the blowout preventer body needs to be maintained, the lifting platforms are placed on the front side and the rear side of the blowout preventer body, and when the blowout preventer body works normally, the lifting platforms are recovered.
Description
Technical Field
The application relates to the technical field of oil exploitation, in particular to a lifting platform device for inspection and maintenance of a blowout preventer of a drilling machine.
Background
In the petroleum exploitation process, blowout phenomenon occurs due to excessive underground pressure caused by various reasons, a blowout preventer is required to be installed at an oil well mouth in order to prevent blowout phenomenon, and the blowout preventer is required to be checked and maintained at regular time after the blowout preventer is installed, so that the blowout preventer can work normally when blowout occurs, and blowout phenomenon is prevented.
The blowout preventer is generally higher than the ground, when maintaining the blowout preventer, operators often adopt modes such as a ladder, a basket, a temporary rack and the like to move to the same height of the blowout preventer, the modes are not enough in safety, the operators are easy to fall down, and the wheels are partially adopted to move up and down the platform, but the wheels move up and down the platform to be influenced by the flatness of the ground, and deflection can occur in the lifting process for uneven ground.
Disclosure of Invention
In order to solve the technical problems, the application provides a lifting platform device for the inspection and maintenance of a blowout preventer of a drilling machine, which is capable of increasing the moving range.
The technical proposal is as follows: the utility model provides a be used for rig preventer to examine maintenance lift platform device, including the supporting seat of symmetric distribution, the supporting seat of symmetric distribution all articulates there is the link, the supporting seat is provided with control terminal, be provided with the preventer body between the link of symmetric distribution, link sliding connection has the sliding block, one side rigid coupling that the sliding block is close to adjacent supporting seat has the dead lever of symmetric distribution, the supporting seat articulates there is the hydraulic putter who is connected with control terminal electricity, hydraulic putter's flexible end is articulated with adjacent dead lever, the distance of the articulated department of link and supporting seat to the supporting seat is less than the distance of the articulated department of hydraulic putter flexible end and dead lever to the supporting seat, the link rigid coupling has limit stop, the sliding block is provided with first rotating block, first rotating block is provided with the second rotating block, the second rotating block has first bottom plate through the telescopic link rigid coupling, the telescopic link is connected with control terminal electricity, first bottom plate is provided with first guardrail, the sliding block is provided with the adjustment mechanism who is used for adjusting first rotating block left and right direction deflection angle.
Preferably, the adjustment mechanism is including the first hydraulic pipe of symmetric distribution, the sliding block is provided with the first arcwall face of symmetric distribution, first rotating block and first arcwall face rotary link, first arcwall face is provided with the first draw-in groove of symmetric distribution, first hydraulic pipe rigid coupling is in adjacent first draw-in groove, first hydraulic pipe sliding connection has first arc pole, first arc pole and first hydraulic pipe sliding connection department are unsealed, sliding connection has the pushing disc with first arc pole rigid coupling in the first hydraulic pipe, first arc pole rigid coupling has the fixed block, fixed block and first rotating block rigid coupling, the intercommunication has the U-shaped pipe between the first hydraulic pipe of symmetric distribution, the intercommunication has the connecting pipe between the U-shaped pipe of symmetric distribution, first hydraulic pipe, all be filled with hydraulic oil in U-shaped pipe and the connecting pipe, be provided with first fender dish in the first hydraulic pipe, first fender dish is provided with the first through-hole of symmetric distribution, be provided with the second through-hole of symmetric distribution in the first hydraulic pipe, first hydraulic pipe sliding connection has the pushing disc with first arc pole rigid coupling, first arc pole rigid coupling has the fixed block, fixed block and first hydraulic pipe rigid coupling has first cavity, the first cavity and third cavity and first sealing component are used for sealing component are located between the first cavity and the first sealing component.
Preferably, the sealing component comprises a rotating rod which is symmetrically distributed, the rotating rod which is symmetrically distributed is rotationally connected between adjacent first hydraulic pipes which are symmetrically distributed, the rotating rod is rotationally connected with a second baffle disc, the rotating rod is fixedly connected with a first sealing ring which is symmetrically distributed and matched with the adjacent first baffle disc, the first sealing ring is provided with a first through groove which is symmetrically distributed, the first through groove is matched with an adjacent first through hole, the rotating rod is fixedly connected with a first bevel gear, the rotating shaft is rotationally connected with a rotating shaft, the rotating shaft is fixedly connected with a second bevel gear which is symmetrically distributed and is meshed with the adjacent first bevel gear, the rotating shaft is fixedly connected with a first gear, a first rack which is meshed with the first gear is in sliding connection, a tension spring is fixedly connected between the first rack and the sliding block, a limiting block which is matched with the first rack is arranged on the first rotating block, and a correcting component which is used for adjusting the front-back direction deflection angle of the second rotating block is arranged on the first rotating block.
Preferably, the correcting component comprises second hydraulic pipes which are symmetrically distributed, the first rotating block is provided with a second arc-shaped surface, the second arc-shaped surface is provided with second clamping grooves which are symmetrically distributed, the second hydraulic pipes are fixedly connected in adjacent second clamping grooves, an elastic liquid guide pipe is communicated between the second hydraulic pipes and the adjacent first hydraulic pipes, the elastic liquid guide pipe is communicated with an adjacent second cavity, hydraulic oil second hydraulic pipes are filled in the second hydraulic pipes and the elastic liquid guide pipe, second arc-shaped rods are slidably connected with second hydraulic pipes, the sliding connection parts of the second arc-shaped rods and the second hydraulic pipes are not sealed, piston discs fixedly connected with the second arc-shaped rods are slidably connected in the second hydraulic pipes, connecting blocks fixedly connected with the second rotating block are fixedly connected with second sealing rings matched with the adjacent second baffle discs, and the second sealing rings are provided with second through grooves which are symmetrically distributed and matched with the adjacent second through holes.
Preferably, the first hydraulic pipe comprises arced pipe and straight tube, and the radian of arced pipe of first hydraulic pipe equals with the radian of first arced face, and the second hydraulic pipe is the arced pipe, and the radian of second hydraulic pipe equals with the radian of second arced face.
Preferably, the outer annular surfaces of the first sealing ring and the second sealing ring are both arc-shaped for increasing the contact area between the first sealing ring and the first hydraulic pipe and between the second sealing ring and the first hydraulic pipe.
Preferably, the device further comprises symmetrically distributed supporting mechanisms which are respectively arranged on the adjacent first bottom plates, the supporting mechanisms are used for communicating the symmetrically distributed first bottom plates, the symmetrically distributed driving shafts are rotationally connected to the adjacent first bottom plates, the driving shafts are fixedly connected with second bottom plates, the second bottom plates are provided with second guardrails, an arc-shaped plate is arranged on one side, close to the first guardrails, of each second guardrail, the first bottom plates are provided with driving assemblies for rotating the driving shafts, and locking assemblies are arranged between the symmetrically distributed second bottom plates on different first bottom plates.
Preferably, the driving assembly comprises fixed plates which are distributed at equal intervals, the fixed plates which are distributed at equal intervals are fixedly connected to the adjacent first bottom plates, the fixed plates which are distributed at equal intervals are connected with folding plates in a sliding mode, the folding plates are matched with the adjacent limiting blocks, a first spring is fixedly connected between the folding plates and the adjacent fixed plates, a second gear is fixedly connected with the driving shaft, and a second rack meshed with the adjacent second gear is fixedly connected with the folding plates.
Preferably, the locking assembly comprises a trapezoid block fixedly connected to a second bottom plate, the other second bottom plate is fixedly connected with a rectangular block, the rectangular block is slidably connected with a limiting rod, the trapezoid block is provided with limiting holes matched with adjacent limiting rods, a second spring is fixedly connected between the limiting rod and the adjacent rectangular block, the second bottom plate close to the trapezoid block is provided with an arc-shaped groove, the second bottom plate close to the rectangular block is provided with an arc-shaped convex plate matched with the adjacent arc-shaped groove, the radian of the arc-shaped groove and the arc-shaped convex plate is equal to the radian of an arc formed by the rotation of the second bottom plate by taking the driving shaft as a rotation center, and the rectangular block is provided with a fixing assembly for fixing the limiting rod.
Preferably, the fixed component comprises a plug rod, the plug rod is connected with the adjacent rectangular blocks in a sliding mode, a third spring is fixedly connected between the plug rod and the rectangular blocks, and the limiting rod is provided with a jack matched with the adjacent plug rod.
The beneficial effects of the application are as follows: according to the application, when the blowout preventer body needs to be maintained, the lifting platforms are placed on the front side and the rear side of the blowout preventer body, when the blowout preventer body works normally, the lifting platforms are recovered, the lifting platforms do not occupy the positions near the blowout preventer body, so that an operator can work conveniently, compared with the lifting platforms with movable wheels, the lifting platforms are directly fixed on the ground, the safety of the operator is greatly improved, the operator can maintain the blowout preventer body conveniently, and for uneven ground, the positions of working planes (first bottom plates) of the operator are adjusted between each use of the lifting platforms, so that the operator and tools are always parallel to the ground in the lifting process, the falling of the tools from the working planes is avoided, the personal safety of the operator is ensured, four second guardrails and two first guardrails enclose square passing channels, and the arc plates seal the corners of the first guardrails and the second guardrails, so that the stability between the two first bottom plates is improved, more movable spaces are provided for the operator, and the operator can maintain the left side and the blowout preventer body conveniently.
Drawings
Fig. 1 is a schematic perspective view of the present application.
Fig. 2 is a schematic perspective view of the support base and the connecting frame of the present application.
Fig. 3 is a schematic perspective view of the sliding block, the first rotating block and other parts according to the present application.
Fig. 4 is a schematic perspective view of the fixing rod, hydraulic push rod and other parts of the present application.
Fig. 5 is a schematic perspective view of the first rack and the limiting block.
Fig. 6 is a schematic perspective view of the first hydraulic pipe, U-shaped pipe and other parts according to the present application.
Fig. 7 is a schematic perspective view of an adjusting mechanism according to the present application.
Fig. 8 is a schematic perspective view of a seal member of the present application.
Fig. 9 is a schematic perspective view of the second baffle plate, the second sealing ring and other parts of the present application.
Fig. 10 is a schematic perspective view of the corrective element of the present application.
Fig. 11 is a schematic perspective view of a supporting mechanism according to the present application.
Fig. 12 is a schematic perspective view of the first guard rail and the arc plate of the present application.
Fig. 13 is a schematic perspective view of the first base plate and the second base plate of the present application.
Fig. 14 is a schematic perspective view of a driving assembly according to the present application.
Fig. 15 is a schematic perspective view of a locking assembly according to the present application.
Fig. 16 is a schematic perspective view of a fixing assembly according to the present application.
Marked in the figure as: 1-supporting seat, 101-blowout preventer body, 2-connecting frame, 201-limiting block, 3-sliding block, 301-first arc surface, 302-first clamping groove, 4-fixed rod, 5-hydraulic push rod, 6-limit stop, 7-first rotating block, 701-second arc surface, 702-second clamping groove, 8-second rotating block, 9-telescopic frame, 10-first bottom plate, 11-first guardrail, 1201-first hydraulic pipe, 12011-first cavity, 12012-second cavity, 12013-third cavity, 1202-first arc rod, 1203-pushing disc, 1204-fixed block, 1205-U-shaped pipe, 1206-connecting pipe, 1207-first baffle disc, 1208-first through hole, 1209-second baffle disc, 1210-second through hole, 1301-rotating rod, 1302-first sealing ring, 13021-first through groove, 1303-first bevel gear, 1304-rotating shaft, 1305-second bevel gear, 1306-first gear, 1307-first rack, 1308-tension spring, 1401-second hydraulic tube, 1402-elastic catheter, 1403-second arc rod, 1404-piston disc, 1405-connecting block, 1406-second sealing ring, 14061-second through groove, 1501-driving shaft, 1502-second bottom plate, 15021-arc groove, 15022-arc convex plate, 1503-second guardrail, 15031-arc plate, 1504-fixed plate, 1505-folded plate, 1506-first spring, 1507-second gear, 1508-second rack, 1601-trapezoid block, 1602-rectangular block, 1603-stop bar, 1604-second spring, 1605-plunger, 1606-third spring.
Detailed Description
The application is further described below with reference to the drawings and examples.
Example 1: 1-4, two supporting seats 1 are symmetrically distributed, each supporting seat 1 is hinged with a connecting frame 2, each supporting seat 1 is provided with a control terminal, a blowout preventer body 101 is arranged between the symmetrically distributed connecting frames 2, the two supporting seats 1 are respectively positioned at the left front and the right rear of the blowout preventer body 101, the upper part of each connecting frame 2 is slidably connected with a sliding block 3, one side of each sliding block 3 close to the adjacent supporting seat 1 is fixedly connected with two fixing rods 4 which are symmetrically distributed in front and back, the upper part of each supporting seat 1 is hinged with a hydraulic push rod 5 which is electrically connected with the control terminal, the telescopic end of each hydraulic push rod 5 is hinged with one side of the adjacent fixing rod 4 away from the corresponding sliding block 3, the distance from the hinge position of each connecting frame 2 and each supporting seat 1 to the corresponding supporting seat 1 is smaller than the distance from the hinge position of the telescopic end of each hydraulic push rod 5 and the corresponding fixing rod 4 to the corresponding supporting seat 1, the connecting frame 2 is fixedly connected with a limit stop 6, the limit stop 6 is positioned on one side of the sliding block 3 close to the adjacent supporting seat 1, the limit stop 6 is used for limiting the sliding block 3, a first rotating block 7 is arranged on the upper part of the sliding block 3, a second rotating block 8 is arranged on the upper part of the first rotating block 7, the first rotating block 7 and the second rotating block 8 are balancing weights, a first bottom plate 10 is fixedly connected on the upper surface of the second rotating block 8 through a telescopic frame 9, the telescopic frame 9 is electrically connected with a control terminal, a first guardrail 11 is arranged on the upper side of the first bottom plate 10, the sliding block 3 is provided with an adjusting mechanism for adjusting the left-right direction deflection angle of the first rotating block 7, when the blowout preventer body 101 needs to be maintained, the lifting platform is placed on the front side and the rear side of the blowout preventer body 101, and when the blowout preventer body 101 works normally, the lifting platform is recovered, the lifting platform does not occupy the position near the blowout preventer body 101, so that the operation of operators is facilitated, compared with the lifting platform with movable wheels, the lifting platform is directly fixed on the ground, the safety of the operators is greatly improved, and the operators are facilitated to maintain the blowout preventer body 101.
As shown in fig. 5-8, the adjusting mechanism comprises four first hydraulic pipes 1201 symmetrically distributed, the sliding block 3 is provided with two first arc surfaces 301 symmetrically distributed left and right, the first rotating block 7 is rotationally linked with the first arc surfaces 301, the first arc surfaces 301 are provided with first clamping grooves 302 symmetrically distributed, the first hydraulic pipes 1201 are fixedly connected with adjacent first clamping grooves 302, the first hydraulic pipes 1201 are composed of arc pipes and straight pipes, the radian of each arc pipe of each first hydraulic pipe 1201 is equal to that of each first arc surface 301, a first arc rod 1202 is slidingly connected in each arc pipe of each first hydraulic pipe 1201, the sliding connection part of each first arc rod 1202 and each arc pipe of each first hydraulic pipe 1201 is not sealed, a pushing disc 1203 fixedly connected with each first arc rod 1202 is slidingly connected with one end of each first arc rod 1202, which is far away from each pushing disc 1203, a fixing block 1204 is fixedly connected with each first rotating block 7, a U-shaped pipe 1205 is communicated between two first hydraulic pipes 1201 which are symmetrically distributed left and right, a connecting pipe 1206 is communicated between the front U-shaped pipe 1205 and the rear U-shaped pipe 1205, hydraulic oil is filled in each of the first hydraulic pipes 1201, the U-shaped pipe 1205 and the connecting pipe 1206, a first baffle disc 1207 is arranged in each of the first hydraulic pipes 1201, the first baffle disc 1207 is positioned at one side of the straight pipe of the first hydraulic pipe 1201, which is close to the arc-shaped pipe, the first baffle disc 1207 is provided with two first through holes 1208 which are symmetrically distributed, a second baffle disc 1209 is arranged in the first hydraulic pipe 1201, the second baffle disc 1209 is positioned at the middle part of the straight pipe of the first hydraulic pipe 1201, the second baffle disc 1209 is provided with two second through holes 1210 which are symmetrically distributed, the first hydraulic pipe 1201 is provided with a first cavity 12011, a second cavity 12012 and a third cavity 12013, the first cavity 12011 is positioned between the push disc 1203 and the first baffle disc 1207, the second cavity 12012 is positioned between the first baffle disc 1207 and the second baffle disc 9, the side of the second baffle plate 1209 away from the second cavity 12012 is matched with the first hydraulic pipe 1201 to form a third cavity 12013, the U-shaped pipe 1205 is communicated with the third cavity 12013, and sealing components are arranged between the symmetrically distributed first hydraulic pipes 1201 and used for sealing the first through holes 1208.
As shown in fig. 6-8, the sealing component comprises two rotating rods 1301 which are symmetrically distributed around, the two rotating rods 1301 are rotationally connected between two adjacent first hydraulic pipes 1201 which are symmetrically distributed around, the rotating rods 1301 are rotationally connected with a second bevel gear 1305 which is symmetrically distributed around and meshed with a second bevel gear 1209, the rotating rods 1301 are fixedly connected with first sealing rings 1302 which are symmetrically distributed around and matched with the adjacent first bevel gear 1207, the first sealing rings 1302 are provided with two first through grooves 13021 which are symmetrically distributed around, the first through grooves 13021 are matched with the adjacent first through holes 1208, the first sealing rings 1302 are rotationally connected with the first through grooves 13021 and are communicated with the adjacent first through holes 1208, a first bevel gear 1303 is fixedly connected to the left part of the rotating rod 1301, a rotating shaft 1304 is rotationally connected to the left part of the upper surface of the sliding block 3, a first gear 1306 is fixedly connected with the middle part of the rotating shaft 1304, a first gear 1306 is slidingly connected with the left part of the upper surface of the sliding block 3, a first rack 1307 is meshed with the first gear 1306, a tension spring 1308 3 is fixedly connected with the first rack 1307 is arranged between the first through grooves 1307 and the sliding block 1308 3, the left part of the sliding block 201 is in a direction of rotation of the sliding block 201 is not contacted with the first rack 1307, and the first rack 1307 is continuously rotated along with the first rotation direction of rotation of the first rack 1308, and the first rotation direction of rotation of the sliding block 201 is not is continuously arranged, and the first rotation direction of the first rack rest 201 is not is used for rotating and is contacted with the first rack rest 201.
As shown in fig. 5-8 and 10, the correcting component comprises four second hydraulic pipes 1401 symmetrically distributed, the first rotating block 7 is provided with a second arc surface 701, the second arc surface 701 is provided with four second clamping grooves 702 symmetrically distributed, the second hydraulic pipes 1401 are fixedly connected in the adjacent second clamping grooves 702, the four second hydraulic pipes 1401 are positioned among the four first hydraulic pipes 1201, the second hydraulic pipes 1401 are arc pipes, the radian of the second hydraulic pipes 1401 is equal to that of the second arc surface 701, an elastic catheter 1402 is communicated between the second hydraulic pipes 1401 and the adjacent first hydraulic pipes 1201, the elastic catheter 1402 is embedded in the adjacent sliding block 3, the elastic catheter 1402 is communicated with the adjacent second cavity 12012, hydraulic oil is filled in the second hydraulic tube 1401 and the elastic catheter 1402, a second arc-shaped rod 1403 is connected at the upper part of the second hydraulic tube 1401 in a sliding way, a piston disc 1404 fixedly connected with the lower end of the second arc-shaped rod 1403 is connected at the sliding joint of the second arc-shaped rod 1403 and the second hydraulic tube 1401 in a sliding way, a connecting block 1405 fixedly connected with a second rotating block 8 is fixedly connected at the upper end of the second arc-shaped rod 1403, a second sealing ring 1406 matched with the adjacent second baffle disc 1209 is fixedly connected at the rotating rod 1301, the outer annular surfaces of the first sealing ring 1302 and the second sealing ring 1406 are arc-shaped, for increasing the contact area between the first sealing ring 1302 and the second sealing ring 1406 and the first hydraulic pipe 1201, improving the tightness between the first sealing ring 1302 and the second sealing ring 1406 and the first hydraulic pipe 1201, ensuring that the hydraulic oil in the first cavity 12011 will not leak, the second sealing ring 1406 is provided with second through grooves 14061 symmetrically distributed and matched with adjacent second through holes 1210, and the second through grooves 14061 are communicated with the adjacent second through holes 1210 by rotating the second sealing ring 1406.
When the blowout preventer body 101 needs to be repaired, the operator continues to perform the subsequent operation process in the state shown in fig. 1 (in the state shown in fig. 1, the connection frame 2 is placed in a completed state, the connection frame 2 is perpendicular to the supporting seat 1 and contacts with the ground), taking the sliding block 3 on the rear side as an example, the right side surface of the sliding block 3 contacts with the limit stop 6 in the initial state, because the connection frame 2 is directly contacted with the ground, the uneven ground can cause the connection frame 2 to deflect in the front-back direction and the left-right direction, and if the deflection angle is serious, the expansion bracket 9 can cause the first bottom plate 10 to lift, the first bottom plate 10 tilts (the lifting route of the first bottom plate 10 is perpendicular to the connection frame 2, rather than perpendicular to the ground), so that the first rotating block 7 and the second rotating block 8 need to be corrected, and the first rotating block 7 and the second rotating block 8 are parallel to the ground.
In the process of moving the sliding block 3 leftwards, the left-right direction angle is adjusted (the first rotating block 7 is corrected) so that the heights of the left side and the right side of the first rotating block 7 are equal, the control terminal starts the hydraulic push rod 5, the hydraulic push rod 5 drives the sliding block 3 to move leftwards and away from the limit stop 6 through the fixed rod 4, the sliding block 3 drives the first rotating block 7 and parts thereon to move leftwards, in an initial state, the first through groove 13021 is not communicated with the first through hole 1208, the second through groove 14061 is not communicated with the second through hole 1210, along with the leftward movement of the sliding block 3, when the first rack 1307 contacts with the limit block 201, the first rack 1307 is limited and cannot continue to move leftwards, the first rack 1307 moves rightwards relative to the sliding block 3, the sliding block 3 drives the rotating shaft 1304 to move leftwards, the tension spring 1308 is stretched, the first gear 1306 drives the rotating shaft 1304 to rotate anticlockwise, and the rotating shaft 1304 drives the two second bevel gears 1305 to rotate, taking the front second bevel gear 1305 as an example, the second bevel gear drives the rotating rod 1301 to rotate through the first bevel gear 1303, the rotating rod 1301 drives the two first sealing rings 1302 and the two second sealing rings 1406 to rotate, taking the right first sealing ring 1302 and the right second sealing ring 1406 as examples, when the first through groove 13021 is communicated with the adjacent first through hole 1208, the first cavity 12011 is communicated with the second cavity 12012, the second through groove 14061 is communicated with the adjacent second through hole 1210, the second cavity 12012 is communicated with the third cavity 12013, at this time, the four third cavities 12013 are mutually communicated, if the first rotating block 7 deflects, the first rotating block 7 automatically corrects under the action of gravity, taking the right side of the first rotating block 7 as an example, the first rotating block 7 drives the right two fixing blocks 1204, the fixing blocks 1204 drive the pushing disc 1203 to squeeze hydraulic oil in the first cavity 12011 through the first arc-shaped rod 1202, the hydraulic oil in the first cavity 12011 enters the third cavity 12013 through the first through hole 1208, the first through groove 13021, the second cavity 12012, the second through hole 1210 and the second through groove 14061, the hydraulic oil in the third cavity 12013 on the right side enters the third cavity 12013 on the left side through the U-shaped pipe 1205, and finally, the heights of the left side and the right side of the first rotating block 7 are equal.
In the process of moving the sliding block 3 leftwards, the front-rear direction angle is adjusted (the second rotating block 8 is corrected), after the second cavity 12012 and the third cavity 12013 are communicated, the second hydraulic pipe 1401 is communicated with the second cavity 12012 through the elastic catheter 1402, and the four second hydraulic pipes 1401 are communicated, if the second rotating block 8 is not level with the ground, the second rotating block 8 rotates under the action of self gravity to automatically correct.
As the sliding block 3 continues to move leftwards, the rotating rod 1301 drives the first sealing ring 1302 and the second sealing ring 1406 to continue to rotate, the first sealing ring 1302 seals the adjacent first through hole 1208, the second sealing ring 1406 seals the second through hole 1210, the outer annular surfaces of the first sealing ring 1302 and the second sealing ring 1406 are arc-shaped, the contact area between the first sealing ring 1302 and the second sealing ring 1406 and the first hydraulic pipe 1201 is increased, the tightness between the first sealing ring 1302 and the second sealing ring 1406 and the first hydraulic pipe 1201 is improved, hydraulic oil in the first cavity 12011 cannot leak, hydraulic oil in the first cavity 12011 does not flow any more, the deflection angle between the first rotating block 7 and the sliding block 3 is always kept at a certain value, the deflection angle between the second rotating block 8 and the first rotating block 7 is always kept at a certain value, the second rotating block 8 is parallel to the ground, as the sliding block 3 continues to move leftwards a certain distance, when the first guardrail 11 is positioned right behind the body 101, the control terminal stops the hydraulic push rod 5, then an operator carries tools and moves onto the first bottom plate 10, the control terminal 9 drives the first expansion bracket 10 to move onto the first bottom plate 10, the expansion bracket 10 is driven by the expansion bracket 9, and the expansion bracket 10 is not to move onto the first bottom plate 10, and the expansion bracket 10 is not moved onto the first bottom plate 10 is enabled to move up to be parallel to the first bottom plate 10, and the expansion bracket 10 is enabled to move up to the bottom plate is guaranteed, and the position is safe to the bottom plate is safe, and the bottom is safe.
After the maintenance of the blowout preventer body 101 is completed, the control terminal starts the telescopic frame 9, the telescopic frame 9 drives the first bottom plate 10 to move downwards, after the first bottom plate 10 is restored to the initial position, an operator carries tools to move downwards from the first bottom plate 10, then, the control terminal starts the hydraulic push rod 5, the hydraulic push rod 5 drives the sliding block 3 to move rightwards through the fixing rod 4, the sliding block 3 drives parts on the sliding block 3 to move rightwards, when the sliding block 3 moves rightwards, the tension spring 1308 gradually resets, the left end of the first rack 1307 is still in contact with the limiting block 201, the first rack 1307 moves leftwards relative to the sliding block 3, the sliding block 3 drives the rotating shaft 1304 to move rightwards, the first rack 1307 drives the first gear 1306 to rotate clockwise, two first hydraulic pipes 1201 which are bilaterally symmetrical are plugged again after being communicated, when the sliding block 3 is contacted with the limiting stop 6, the sliding block 3 cannot continue to move rightwards after being limited by the limiting stop 6, at this time, the connecting frame 2 drives parts on the sliding block 3 to move rightwards by taking the right end of the sliding block as a rotating center, the connecting frame 2 is in a state in the clockwise as shown in fig. 4, the state in the rotating process of the sliding block 2, the sliding block 2 is stopped from being connected with the supporting frame 1, the hydraulic push rod is not occupied by the two sides by the control terminal, and the blowout preventer body is required to be continuously maintained by the operator after the two sides of the device is repeatedly, and the device is repeatedly kept on the ground, if the two sides of the device is required, and the device is completed, and the device is repeatedly, and the device is required to be closed by the people and the maintenance is finished.
To sum up, when the blowout preventer body 101 needs to be maintained, the lifting platform is placed on the front side and the rear side of the blowout preventer body 101, when the blowout preventer body 101 normally works, the lifting platform is recovered, the lifting platform does not occupy the position near the blowout preventer body 101, the operation of operators is facilitated, compared with the lifting platform with movable wheels, the lifting platform is directly fixed on the ground, the safety of the operators is greatly improved, the operators are convenient to maintain the blowout preventer body 101, and the positions of the working planes (the first bottom plate 10) of the operators are adjusted between each use of the lifting platform, so that the operators and tools are always parallel to the ground in the ascending process, and the personal safety of the operators is ensured while the tools fall from the working planes is avoided.
Example 2: on the basis of embodiment 1, as shown in fig. 11-14, the device further comprises symmetrically distributed supporting mechanisms, the symmetrically distributed supporting mechanisms are respectively arranged on adjacent first bottom plates 10, the supporting mechanisms are used for communicating the symmetrically distributed first bottom plates 10, the supporting mechanisms comprise two driving shafts 1501 which are symmetrically distributed left and right, the symmetrically distributed driving shafts 1501 are respectively connected to the left side and the right side of the adjacent first bottom plates 10 in a rotating mode, a second bottom plate 1502 is fixedly connected to the upper portion of the driving shaft 1501, a second guardrail 1503 is arranged on the upper portion of the second bottom plate 1502, an arc-shaped plate 15031 is arranged on one side, close to the first guardrail 11, of the second guardrail 1503, corners of the first guardrail 11 and the second guardrail 1503 are sealed, the four second bottom plates 1502 are rotationally communicated with the two first bottom plates 10, and a locking assembly is arranged between the two second bottom plates 1502 which are symmetrically distributed front and back on different first bottom plates 10.
As shown in fig. 11 and 14, the driving assembly includes three fixing plates 1504 distributed at equal intervals, the three fixing plates 1504 are fixedly connected to adjacent first bottom plates 10, the lower parts of the three fixing plates 1504 are slidably connected with folded plates 1505, the folded plates 1505 are matched with adjacent limiting blocks 201, first springs 1506 are fixedly connected between the folded plates 1505 and the adjacent fixing plates 1504, the first springs 1506 are sleeved on the outer sides of the folded plates 1505, second gears 1507 are fixedly connected to the lower ends of the driving shafts 1501, second racks 1508 meshed with the adjacent second gears 1507 are fixedly connected to the folded plates 1505, and tooth orientations of the two second racks 1508 are opposite.
As shown in fig. 13, 15 and 16, the locking assembly includes a trapezoid block 1601, the trapezoid block 1601 is fixedly connected to a second bottom plate 1502 at a rear side, a rectangular block 1602 is fixedly connected to a second bottom plate 1502 at a front side, a limiting rod 1603 is slidably connected to the rectangular block 1602, the trapezoid block 1601 is provided with a limiting hole matched with an adjacent limiting rod 1603, a second spring 1604 is fixedly connected between the limiting rod 1603 and the adjacent rectangular block 1602, an arc slot 15021 is provided on a front side of the second bottom plate 1502 at a rear side, an arc convex plate 15022 matched with the adjacent arc slot 15021 is provided on a rear side of the second bottom plate 1502 at the front side, the arc convex plate 15022 is clamped into the adjacent arc slot 15021, a supporting force at a joint of the two second bottom plates 1502 is increased, and an arc formed by rotation of the arc slot 15021 and the arc convex plate 15022 with the second bottom plate 1502 by taking a driving shaft as a rotation center is equal, so that the two second bottom plates 1502 are aligned front and back and tightly fit, and the rectangular block 1602 is provided with a fixing assembly for fixing the limiting rod 3.
As shown in fig. 16, the fixing assembly includes a plug 1605, the plug 1605 is slidably connected to an upper portion of an adjacent rectangular block 1602, a third spring 1606 is fixedly connected between the plug 1605 and an upper surface of the rectangular block 1602, and a jack matched with the adjacent plug 1605 is disposed at a rear side of an upper portion of the limit rod 1603.
Before first guardrail 11 is located preventer body 101 directly over, with two first guardrails 11 intercommunication around, when increasing stability between two first bottom plates 10, provide more activity space for operating personnel, the left and right sides of the maintenance preventer body 101 of operating personnel of being convenient for, concrete operation is as follows: after the second rotating block 8 is flush with the ground, taking the rear sliding block 3 as an example, as the sliding block 3 continues to move leftwards, when the left end of the folded plate 1505 contacts with the limiting block 201, the limited position of the folded plate 1505 cannot move leftwards, the folded plate 1505 moves rightwards relative to the first bottom plate 10, the three first springs 1506 are compressed, the two second gears 1507 are limited by the adjacent second racks 1508, the left second gear 1507 drives the left second bottom plate 1502 to rotate anticlockwise through the driving shaft 1501, the right second gear 1507 drives the right second bottom plate 1502 to rotate clockwise through the driving shaft 1501, the two second bottom plates 1502 which are positioned on different first bottom plates 10 and are symmetrical front and rear are close to each other, as shown in fig. 15 for example, when the arc-shaped convex plates 15022 of the front side second bottom plates 1502 are gradually clamped into the arc-shaped grooves 15021 of the rear side second bottom plates 1502, after the two second bottom plates 1502 are aligned front and back, the arc-shaped convex plates 15022 increase the supporting force between the front and back two second bottom plates 1502, so that subsequent operators are prevented from moving to break between the two second bottom plates 1502, when the two second bottom plates 1502 are aligned front and back, the limiting rods 1603 are inserted into the limiting holes of the trapezoidal blocks 1601, the trapezoidal blocks 1601 are limited and cannot move, the front and back two second bottom plates 1502 cannot rotate, the front and back two second bottom plates 1502 are communicated with each other, at this time, the lifting platform is in a square shape as shown in fig. 13, the arc-shaped plates 15031 enclose the corners of the first guardrail 1503 and the second guardrail 1503, and the operators are convenient to maintain the blowout preventer body 101.
After the fixing of the four second bottom plates 1502 is completed, an operator moves to the square cross corridor with tools, in the process of moving the first bottom plate 10 upwards, the folded plate 1505 moves upwards synchronously, when the folded plate 1505 is not contacted with the limiting block 201 any more, the limit of the folded plate 1505 is released, however, the four second bottom plates 1502 are fixed, therefore, the folded plate 1505 cannot move leftwards, when the operator lifts to a designated position to repair the blowout preventer body 101, after the repair is completed, the control terminal starts the telescopic frame 9 to drive the first bottom plate 10 to move downwards, the left end of the second rack 1508 gradually contacts with the right side surface of the limiting block 201, when the first bottom plate 10 falls near the ground, the operator moves downwards from the lifting platform, then unlocks the four second bottom plates 1502, the two second bottom plates 1502 on the right side are taken as an example, the operator pulls the limiting rod 1603 forwards, the second spring 1604 is stretched, the limit of the limiting block 1601 is released from the limit of the trapezoid block, when the jack of the limiting rod 1603 is aligned with the jack of the jack 1605, the third spring 1603 in a compressed state drives the jack 1603 to move downwards, the jack 1603 cannot be released from the jack 1603, and the jack 1603 can not move downwards, and the limiting rod 1603 can not be released from the jack 1603.
In the process that the rear sliding block 3 moves rightward, the limit of the folded plate 1505 is released, the three first springs 1506 reset to drive the folded plate 1505 to move leftward relative to the first bottom plate 10, the left end of the folded plate 1505 is still attached to the right side surface of the limiting block 201, the left and right second bottom plates 1502 rotate reversely to reset, then, an operator pulls the inserting rod 1605 upward, and after the limit of the limiting rod 1603 is released, the third springs 1606 reset to drive the limiting rod 1603 to move.
The foregoing has outlined rather broadly the more detailed description of the application in order that the detailed description of the principles and embodiments of the application may be implemented in conjunction with the detailed description of the application that follows, the examples being merely intended to facilitate an understanding of the method of the application and its core concepts; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Claims (7)
1. A be used for rig preventer to examine maintenance lift platform device which characterized in that: including symmetrically distributed's supporting seat (1), symmetrically distributed's supporting seat (1) all articulates there is link (2), supporting seat (1) is provided with control terminal, be provided with preventer body (101) between symmetrically distributed's the link (2), link (2) sliding connection has slider (3), one side rigid coupling that slider (3) is close to adjacent supporting seat (1) has dead lever (4) of symmetric distribution, supporting seat (1) articulates there is hydraulic push rod (5) with control terminal electricity connection, hydraulic push rod (5) flexible end articulates with adjacent dead lever (4), the distance to supporting seat (1) of articulated department of link (2) and supporting seat (1) is less than hydraulic push rod (5) flexible end and the articulated department of dead lever (4) to the distance of supporting seat (1), link (2) rigid coupling has limit stop (6), slider (3) are provided with first rotating block (7), first rotating block (7) are provided with second rotating block (8), second rotating block (8) are through flexible base plate (9) rigid coupling has first base plate (10), first base plate (10) are connected with first base plate (11), the sliding block (3) is provided with an adjusting mechanism for adjusting the left-right direction deflection angle of the first rotating block (7);
the adjusting mechanism comprises first hydraulic pipes (1201) which are symmetrically distributed, a sliding block (3) is provided with first arc surfaces (301) which are symmetrically distributed, a first rotating block (7) is rotationally linked with the first arc surfaces (301), the first arc surfaces (301) are provided with first clamping grooves (302) which are symmetrically distributed, the first hydraulic pipes (1201) are fixedly connected with adjacent first clamping grooves (302), the first hydraulic pipes (1201) are slidably connected with first arc rods (1202), the sliding connection parts of the first arc rods (1202) and the first hydraulic pipes (1201) are not sealed, a pushing disc (1203) which is fixedly connected with the first arc rods (1202) is slidably connected with the first hydraulic pipes (1201), a fixed block (1204) is fixedly connected with the first arc rods (1202), U-shaped pipes (1205) are communicated between the first hydraulic pipes (1201) which are symmetrically distributed, connecting pipes (1206) are communicated with each other, hydraulic oil blocking discs (1201) are arranged in the first hydraulic pipes (1201), a first blocking disc (1209) is arranged in the first hydraulic pipes (120), a second blocking disc (1209) is fixedly connected with the first arc rods (1202), the second baffle disc (1209) is provided with second through holes (1210) which are symmetrically distributed, the first hydraulic pipe (1201) is provided with a first cavity (12011), a second cavity (12012) and a third cavity (12013), the U-shaped pipe (1205) is communicated with the third cavity (12013), and sealing parts are arranged between the first hydraulic pipes (1201) which are symmetrically distributed and are used for sealing the first through holes (1208);
the sealing component comprises symmetrically-distributed rotating rods (1301), the symmetrically-distributed rotating rods (1301) are rotationally connected between adjacent and symmetrically-distributed first hydraulic pipes (1201), the rotating rods (1301) are rotationally connected with second baffle discs (1209), first sealing rings (1302) which are symmetrically distributed and matched with the adjacent first baffle discs (1207) are fixedly connected with the rotating rods (1301), first through grooves (13021) which are symmetrically distributed are formed in the first sealing rings (1302), the first through grooves (13021) are matched with the adjacent first through holes (1208), first bevel gears (1303) are fixedly connected with the rotating rods (1301), rotating shafts (1304) are rotationally connected with rotating shafts (1304), second bevel gears (1305) which are symmetrically distributed and meshed with the adjacent first bevel gears (1303) are fixedly connected with the rotating shafts (1304), first gears (1306) are fixedly connected with the rotating shafts (3) in a sliding mode, first racks (1307) meshed with the first gears (1306), tension springs (1308) are fixedly connected between the first sealing rings (1307) and the sliding blocks (3), and the connecting frames (2) are provided with limiting blocks (201) which are matched with the first racks (1307) in a rotating direction, and the rotating direction of the rotating components (8) are used for adjusting the rotating direction;
the correcting component comprises second hydraulic pipes (1401) which are symmetrically distributed, the first rotating blocks (7) are provided with second arc-shaped surfaces (701), the second arc-shaped surfaces (701) are provided with second clamping grooves (702) which are symmetrically distributed, the second hydraulic pipes (1401) are fixedly connected in the adjacent second clamping grooves (702), elastic liquid guide pipes (1402) are communicated between the second hydraulic pipes (1401) and the adjacent first hydraulic pipes (1201), the elastic liquid guide pipes (1402) are communicated with the adjacent second cavities (12012), hydraulic oil is filled in the second hydraulic pipes (1401) and the elastic liquid guide pipes (1402), the second arc-shaped rods (1403) are connected in a sliding mode, the sliding connection parts of the second arc-shaped rods (1403) and the second hydraulic pipes (1401) are not sealed, piston discs (1404) fixedly connected with the second arc-shaped rods (1403) are fixedly connected, connecting blocks (1301) fixedly connected with the second rotating blocks (8) are fixedly connected with the second rotating blocks (1301), and second sealing rings (1406) are matched with the second sealing rings (1406) which are symmetrically matched with the second through holes (1406).
2. The lift platform apparatus for rig blowout preventer inspection and repair of claim 1, wherein: the first hydraulic pipe (1201) comprises arced pipe and straight tube, and the radian of arced pipe of first hydraulic pipe (1201) equals with the radian of first arced face (301), and second hydraulic pipe (1401) are arced pipe, and the radian of second hydraulic pipe (1401) equals with the radian of second arced face (701).
3. The lift platform apparatus for rig blowout preventer inspection and repair of claim 1, wherein: the outer annular surfaces of the first sealing ring (1302) and the second sealing ring (1406) are arc-shaped, and are used for increasing the contact area between the first sealing ring (1302) and the first hydraulic pipe (1201) and between the second sealing ring (1406) and the first hydraulic pipe.
4. The lift platform apparatus for rig blowout preventer inspection and repair of claim 1, wherein: the supporting mechanism is arranged on the adjacent first bottom plates (10) respectively, the supporting mechanism is used for communicating the first bottom plates (10) which are symmetrically distributed, the supporting mechanism comprises driving shafts (1501) which are symmetrically distributed, the driving shafts (1501) which are symmetrically distributed are rotationally connected to the adjacent first bottom plates (10), the driving shafts (1501) are fixedly connected with second bottom plates (1502), the second bottom plates (1502) are provided with second guardrails (1503), one sides, close to the first guardrails (11), of the second guardrails (1503) are provided with arc-shaped plates (15031), the first bottom plates (10) are provided with driving assemblies which are used for rotating the driving shafts (1501), and locking assemblies are arranged between the second bottom plates (1502) which are symmetrically distributed on different first bottom plates (10).
5. The lift platform apparatus for blowout preventer inspection and repair of a drilling rig of claim 4, wherein: the driving assembly comprises fixed plates (1504) which are distributed at equal intervals, the fixed plates (1504) which are distributed at equal intervals are fixedly connected to adjacent first bottom plates (10), the fixed plates (1504) which are distributed at equal intervals are connected with folding plates (1505) in a sliding mode, the folding plates (1505) are matched with adjacent limiting blocks (201), first springs (1506) are fixedly connected between the folding plates (1505) and the adjacent fixed plates (1504), second gears (1507) are fixedly connected to the driving shafts (1501), and second racks (1508) meshed with the adjacent second gears (1507) are fixedly connected to the folding plates (1505).
6. The lift platform apparatus for blowout preventer inspection and repair of a drilling rig of claim 4, wherein: the locking assembly comprises a trapezoid block (1601), the trapezoid block (1601) is fixedly connected to a second bottom plate (1502), the other second bottom plate (1502) is fixedly connected with a rectangular block (1602), the rectangular block (1602) is connected with a limiting rod (1603) in a sliding mode, the trapezoid block (1601) is provided with a limiting hole matched with the adjacent limiting rod (1603), a second spring (1604) is fixedly connected between the limiting rod (1603) and the adjacent rectangular block (1602), an arc groove (15021) is formed in the second bottom plate (1502) close to the trapezoid block (1601), an arc convex plate (15022) matched with the adjacent arc groove (15021) is arranged in the second bottom plate (1502) close to the rectangular block (1602), and the radian of the arc groove (15021) and the arc convex plate (15022) are equal to the radian of an arc formed by rotating the second bottom plate (1502) by taking a driving shaft (1501) as a rotating center.
7. The lift platform apparatus for rig blowout preventer inspection and repair of claim 6, wherein: the fixed subassembly is including inserted bar (1605), and inserted bar (1605) sliding connection is in adjacent rectangle piece (1602), and rigid coupling has third spring (1606) between inserted bar (1605) and rectangle piece (1602), and gag lever post (1603) are provided with the jack with adjacent inserted bar (1605) complex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310667366.3A CN116374916B (en) | 2023-06-07 | 2023-06-07 | Lifting platform device for inspection and maintenance of blowout preventer of drilling machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310667366.3A CN116374916B (en) | 2023-06-07 | 2023-06-07 | Lifting platform device for inspection and maintenance of blowout preventer of drilling machine |
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| CN116374916B true CN116374916B (en) | 2023-08-29 |
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