A multifunctional and efficient semi-automatic stacking device for offshore drill pipes

Abstract

The application discloses a kind of offshore drill pipe multifunctional efficient semi-automatic stacking device, and the rear side of pipe rack is provided with inclined plane, and the inclined plane is provided with multiple vertical hollow notches, and drill pipe falls on V-shaped groove skid through vertical hollow notch;Anti-follow interlocking assembly is mirror image arranged in two groups at both ends of vertical hollow notch, and anti-follow interlocking assembly includes mounting frame, eccentric baffle and locking mechanism, eccentric baffle is rotationally connected with mounting frame at eccentric side away from its gravity center, and when locking mechanism is not locked, eccentric baffle is rotationally connected with mounting frame, and drill pipe enters vertical hollow notch at the same time, and triggers locking mechanism to lock eccentric baffle, and when locking mechanism is locked, eccentric baffle is suitable for preventing drill pipe from entering the vertical hollow notch;Springback bracket is suitable for rotating to throw drill pipe into vertical hollow notch;Springback mechanism assembly is used to drive springback bracket to automatically spring back after drill pipe is lowered. The present application can realize automatic stacking of drill pipe into V-shaped groove skid, and efficiently and safely complete drill pipe stacking operation.

Description

Technical Field

[0001] This invention relates to the field of offshore oil and gas extraction equipment technology, and in particular to a multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes. Background Technology

[0002] Drill pipes are widely used in offshore oil and gas extraction equipment. However, due to their special structure, they are typically transported and hoisted by stacking several V-groove wooden blocks together before being bundled and lifted. However, given the limited deck space at sea, stacking drill pipes one by one is inefficient and requires significant personnel involvement, posing certain safety hazards. Therefore, the main risks associated with directly bundling drill pipes instead of using V-groove wooden blocks for proper stacking and hoisting are as follows: 1) The risk of mechanical injury to personnel has increased dramatically. A drill rod approximately 10 meters long and weighing 0.3 tons is extremely prone to rolling and slipping when unrestrained. Personnel must manually adjust its position at close range (<0.5m), which greatly increases the risk of crushing or running over. Furthermore, the process of binding the wire rope requires multiple people to work together, increasing the risk of hand injuries from the drill rod and wire rope.

[0003] 2) Uncontrollable risks during hoisting Offshore platforms experience pitching and rolling due to wind and waves, causing drill pipes without support timbers to swing freely in the air. The amplitude increases by more than 30%, and the drill rods are in direct contact with each other as cylindrical surfaces. This can easily cause relative rolling during hoisting, leading to a shift in the center of gravity, failure of the binding, impact with the platform structure, or injury to personnel.

[0004] 3) High rate of repetitive work, resulting in decreased hoisting efficiency. During the initial trial lift, directly bundling the drill rods is extremely prone to unbundling, requiring them to be returned to the deck for readjustment, increasing the time for a single operation by 40%-60%. Furthermore, without wooden supports, the drill rods are not aligned properly, making it difficult to thread the wire ropes. Repeated prying and adjustments are necessary, extending the time spent on the crane. The risk of unbundling forces a reduction in lifting speed of over 50%, ultimately leading to low overall work efficiency.

[0005] Therefore, a multi-functional, efficient, semi-automatic device for stacking offshore drill pipes that reduces human involvement is key to improving the efficiency of such operations and reducing safety hazards. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes to solve the problems mentioned in the background art.

[0007] The present invention solves its problems through the following technical solution: A multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes includes: The inclined frame for tubes is located above the V-groove pad. The rear side of the inclined frame is provided with an inclined surface. Multiple vertically spaced slots are provided on the inclined surface from top to bottom. The vertical slots penetrate the inclined frame downwards, and the drill rod falls onto the V-groove pad through the vertical slots. The anti-tailgating interlock assembly consists of two mirror-image sets positioned at both ends of a vertically perforated slot. Each assembly includes a mounting frame, an eccentric baffle, and a locking mechanism. The mounting frame is connected to the inclined brackets at both ends of the vertically perforated slot. The eccentric baffle is located within the mounting frame, with its eccentric side (away from its center of gravity) rotatably connected to the mounting frame. The locking mechanism is connected to the eccentric baffle. When the locking mechanism is not locking the eccentric baffle, the eccentric baffle is rotatably connected to the mounting frame. Simultaneously, as the drill rod enters the vertically perforated slot, the locking mechanism is triggered to lock the eccentric baffle. When the locking mechanism locks the eccentric baffle, the eccentric baffle is adapted to prevent the drill rod from entering the vertically perforated slot. Springback bracket, located above the inclined frame of the tube rack, is used to support a single drill rod. The springback bracket is adapted to rotate to throw the drill rod into the vertical cutout. The spring-back mechanism assembly is located on both sides of the spring-back bracket. The spring-back mechanism assembly is used to drive the spring-back bracket to automatically spring back and reset after the drill rod is lowered.

[0008] Optionally, the eccentric baffle includes: The first plate is long and narrow. The lower part of the first plate is provided with a rotating shaft hole, which is rotatably connected to the mounting frame through a rotating shaft. The bottom surface of the first plate is provided with a locking hole. The second plate is located on the side of the first plate near the center of the vertical cutout. When the locking mechanism locks the eccentric baffle, the first plate is in a vertical position, and the distance between the two second plates corresponding to the same vertical hollow slot is less than the length of the drill rod; when the locking mechanism does not lock the eccentric baffle, the upper part of the first plate rotates away from the center of the vertical hollow slot, and the lower part of the first plate rotates towards the center of the vertical hollow slot.

[0009] Optionally, the locking mechanism includes: The locking spring pin includes a spring sleeve, a locking spring, a round-headed pin, and a cross-shaped anti-disengagement strip. The locking spring has a locking hole corresponding to the first plate body located on the upper surface of the mounting frame. The spring sleeve is fitted over the locking spring. The round-headed pin is located inside the spring sleeve. The lower end of the round-headed pin contacts the upper end of the locking spring. The lower end of the round-headed pin is also provided with a cross-shaped anti-disengagement strip. The round-headed pin is adapted to extend into the locking hole of the first plate body under the action of the locking spring, so that the first plate body is in a vertical state. A reset plate, one end of which is pressed onto the spring sleeve, and the other end of which is provided with a guide hole. A vertical guide rod is provided on the upper surface of the mounting frame, and the guide rod is located in the guide hole. The interlock release lever is connected to the end of the reset plate away from the spring sleeve. The interlock release lever and the reset plate work together to release the locking state of the locking pin of the locking spring on the eccentric baffle.

[0010] Optionally, the locking mechanism further includes: The unlocking safety pin is located at the bottom of the first plate, where a check hole is provided. The check hole is located near the locking hole and is connected to the locking hole. The axis of the check hole is perpendicular to that of the locking hole. When the unlocking safety pin is inserted into the check hole, it will block the round-headed pin from entering the locking hole.

[0011] Optionally, the locking mechanism further includes: A limiting spring locking pin is provided on the inner wall of the mounting frame. The side of the first plate is provided with a limiting hole. The limiting spring locking pin cooperates with the limiting hole to help the first plate be positioned vertically.

[0012] Optionally, the anti-tailgating interlock assembly further includes: The enclosure is located above the outer perimeter of the mounting frame to prevent the drill pipe from swinging out of the mounting frame due to excessive axial swing. Guide ramp, the guide ramp is set on the side of the mounting frame, the guide ramp is set near the vertical cutout below it, the guide ramp is used to assist the drill rod to enter the vertical cutout below; The buffer funnel plate has two buffer funnel plates on the two long sides at the lower end of the vertical hollowed-out groove. The two buffer funnel plates form a constricted shape, and the lower ends of the two buffer funnel plates are set in the grooves for placing the drill rods of the V-shaped groove pad wood.

[0013] Optionally, it also includes: An auxiliary hanger is located on the rear side of the inclined tube rack, and the inclined surfaces of the auxiliary hanger and the inclined tube rack are spliced ​​together to form a rectangular support structure. The triangular column is mounted on the auxiliary hanger, and the spring bracket is rotatably connected to the triangular column via a rotating shaft.

[0014] Optionally, the springback mechanism assembly includes: The ball cage universal joint is connected to the side of the triangular column and the spring bracket via ear plate shackles. The spring telescopic rod has its two ends connected to the universal joints of the ball cage.

[0015] Optionally, it also includes: The locking rod, the triangular post, and the spring bracket are each provided with mounting holes on both sides, and the locking rod is inserted into the mounting holes; Bracket damping strip, the bracket damping strip is located at the lower end of the rebound bracket; The bracket stop bar is located on the upper surface of the inclined frame of the code tube, corresponding to the lower end of the rebound bracket.

[0016] Optionally, it also includes: The four columns are located below the auxiliary hanger and the inclined tube rack. The inner side of the column is provided with a wedge-shaped notch that matches the V-groove pad. The drill rod placement groove of the V-groove pad is aligned with the vertical cutout of the inclined tube rack on the plumb line.

[0017] In summary, the technical effects and advantages of this invention are as follows: This application enables the automatic placement of drill rods into the corresponding drill rod placement grooves of the V-groove pad wood, reducing the degree of human intervention and enabling efficient and safe completion of drill rod placement operations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes according to an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of a multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes according to an embodiment of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of a multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes according to an embodiment of the present invention. Figure 3 ; Figure 4 This is a schematic diagram of the structure of a vertical hollowed-out slot and an anti-tailgating interlock assembly according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the anti-tailgating interlock assembly according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the explosion structure of an anti-tailgating interlock assembly according to an embodiment of the present invention.

[0020] The components include: 1. Inclined tube support; 2. Springback bracket; 3. V-groove pad; 4. Vertical hollowed-out groove; 5. Drill rod; 6. Mounting frame; 7. First plate; 8. Second plate; 9. Rotary shaft hole; 10. Rotary shaft; 11. Bushing; 12. Locking spring pin; 13. Reset pressure plate; 14. Interlock release rod; 15. Spring outer sleeve; 16. Locking spring; 17. Round head pin; 18. Cross anti-detachment strip; 19. Guide hole; 20. Thread. 21. Hole; 22. Unlocking safety pin; 23. Check hole; 24. Limiting spring lock pin; 25. Limiting hole; 26. Enclosure; 27. Guide ramp; 28. Buffer funnel plate; 29. ​​Auxiliary hanger; 30. Triangular column; 31. Ball cage universal joint; 32. Spring telescopic rod; 33. Rotating rod; 34. Locking rod; 35. Drag shackle ring; 36. Bracket damping strip; 37. Bracket stop strip; 38. Column; 39. Wedge notch; 30. Guide rod. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0023] This embodiment proposes a multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes, such as... Figures 1-6As shown, the system includes a code tube inclined frame 1, an anti-tailgating interlock assembly, a spring-loaded bracket 2, and a spring-loaded mechanism assembly. The code tube inclined frame 1 is located above the V-groove pad 3. The rear side of the code tube inclined frame 1 has an inclined surface with multiple vertically spaced slots 4 arranged from top to bottom. The vertically spaced slots 4 penetrate downwards through the code tube inclined frame 1, and the drill rod 5 falls onto the V-groove pad 3 through the vertically spaced slots 4. The anti-tailgating interlock assemblies are arranged in pairs at both ends of the vertically spaced slots 4. The anti-tailgating interlock assemblies include a mounting frame 6, an eccentric baffle, and a locking mechanism. The mounting frame 6 is connected to the code tube inclined frames 1 at both ends of the vertically spaced slots 4. The eccentric baffle is located inside the mounting frame 6 and is located away from the vertically spaced slots 4. Its center of gravity is rotatably connected to the mounting frame 6 on the eccentric side, and the locking mechanism is connected to the eccentric baffle. When the locking mechanism does not lock the position of the eccentric baffle, the eccentric baffle is rotatably connected to the mounting frame 6. When the drill rod 5 enters the vertical hollow slot 4, the locking mechanism is triggered to lock the eccentric baffle. When the locking mechanism locks the position of the eccentric baffle, the eccentric baffle is suitable to prevent the drill rod 5 from entering the vertical hollow slot 4. The springback bracket 2 is located above the inclined frame 1. The springback bracket 2 is used to support a single drill rod 5. The springback bracket 2 is suitable to rotate to throw the drill rod 5 into the vertical hollow slot 4. The springback mechanism assembly is located on both sides of the springback bracket 2. The springback mechanism assembly is used to drive the springback bracket 2 to automatically spring back and reset after the drill rod 5 is lowered.

[0024] In this embodiment, the springback bracket 2 is an involute semi-cylindrical structure; the anti-tailgating interlock assembly enables a single drill rod 5 to enter the vertical hollowed-out slot 4 channel of the code tube inclined frame 1 in a restricted manner.

[0025] Furthermore, the eccentric baffle includes a first plate 7 and a second plate 8; the first plate 7 is elongated, and the lower part of the first plate 7 is provided with a rotating shaft hole 9, which is rotatably connected to the mounting frame 6 through a rotating shaft 10. A bushing 11 is provided outside the rotating shaft 10, and a locking hole is provided on the bottom surface of the first plate 7; the second plate 8 is located on the side of the first plate 7 near the center of the vertical hollowed-out slot 4.

[0026] When the locking mechanism locks the eccentric baffle, the first plate 7 is in a vertical position, and the distance between the two second plates 8 corresponding to the same vertical hollow slot 4 is less than the length of the drill rod 5. When the locking mechanism does not lock the eccentric baffle, the upper part of the first plate 7 rotates away from the center of the vertical hollow slot 4, and the lower part of the first plate 7 rotates towards the center of the vertical hollow slot 4. During the descent of the drill rod 5, it contacts the lower part of the first plate 7 and pushes the lower part of the first plate 7 outward, making the first plate 7 vertical and locking the first plate 7.

[0027] Furthermore, the locking mechanism includes a locking spring pin 12, a reset plate 13, and an interlock release rod 14. The locking spring pin 12 includes a spring sleeve 15, a locking spring 16, a round-headed pin 17, and a cross anti-disengagement strip 18. The locking spring 16 is located on the upper surface of the mounting frame 6, corresponding to the locking hole of the first plate 7. The spring sleeve 15 is fitted over the locking spring 16, and the round-headed pin 17 is located inside the spring sleeve 15. The lower end of the round-headed pin 17 contacts the upper end of the locking spring 16. The locking spring 16 provides upward elastic potential energy, allowing the round-headed pin 17 to enter the bottom locking hole. The lower end of the round-headed pin 17 is also provided with a cross anti-disengagement strip 18. The round-headed pin 17 is adapted to extend into the locking hole of the first plate 7 under the action of the locking spring 16, so that the first plate 7 is in a vertical state. One end of the reset plate 13 is pressed onto the spring sleeve 15, and the other end of the reset plate 13 is provided with a guide hole 19. A vertical guide rod 39 is provided on the upper surface of the mounting frame 6, and the guide rod 39 is located in the guide hole 19. The interlock release rod 14 is connected to the end of the reset plate 13 away from the spring sleeve 15. The interlock release rod 14 and the reset plate 13 work together to release the locking state of the locking spring locking pin 12 on the eccentric baffle.

[0028] In this embodiment, the reset plate 13 has a notch at one end, positioned above the spring sleeve 15, and two guide holes 19 at the other end. A threaded hole 20 is provided at the end of the plate, which is threadedly connected to the interlock release rod 14. The reset plate 13 works in conjunction with the interlock release rod 14. The interlock release rod 14 applies downward pressure to the reset plate 13, thereby compressing the locking spring 16 at the bottom of the locking spring pin 12. This causes the spring sleeve 15, the round-headed top pin 17, and the cross-shaped anti-detachment strip 18 to shift downwards as a whole, ultimately releasing the locking state of the locking spring pin 12 on the eccentric baffle.

[0029] Furthermore, the locking mechanism also includes an unlocking safety pin 21, and the lower part of the first plate 7 is also provided with a check hole 22. The check hole 22 is located near the locking hole and communicates with the locking hole. The check hole 22 is perpendicular to the axis of the locking hole. When the unlocking safety pin 21 is inserted into the check hole 22, the unlocking safety pin 21 will block the round-headed top pin 17 from entering the locking hole, thereby causing the anti-tailgating interlock assembly to fail.

[0030] Furthermore, the locking mechanism also includes a limiting spring locking pin 23, which is located on the inner wall of the mounting frame 6. A limiting hole 24 is provided on the side of the first plate 7. The limiting spring locking pin 23 cooperates with the limiting hole 24 to assist in positioning the first plate 7 in a vertical state. The structure of the limiting spring locking pin 23 is similar to that of the locking spring locking pin 12.

[0031] Optionally, the anti-tailgating interlock assembly further includes a retaining wall 25 and a guide ramp 26. The retaining wall 25 is located above the outer periphery of the mounting frame 6 to prevent the drill rod 5 from swinging out of the mounting frame 6 due to excessive axial swing. The guide ramp 26 is located on the side of the mounting frame 6, near the vertical slot 4 below it, and is used to assist the drill rod 5 in entering the vertical slot 4 below.

[0032] Optionally, buffer funnel plates 27 are provided on the two long sides of the lower end of the vertical hollow slot 4. The two buffer funnel plates 27 form a constricted shape, and the lower ends of the two buffer funnel plates 27 are set in grooves corresponding to the drill rod 5 of the V-shaped groove pad 3.

[0033] In this embodiment, the buffer funnel plate 27 is an elastic buffer funnel plate. The two long sides of the lower end of the vertical hollow slot 4 are respectively provided with plate clamping grooves. The cross-section of the plate clamping groove is set as an "inverted T-shape". It is welded to the long side of the vertical hollow slot 4 at a certain angle, which can clamp the elastic buffer funnel plate 27 to form a stable structure. One end of the buffer funnel plate 27 is a "T-shaped" structure and is inserted into the "inverted T-shaped" plate clamping groove to reduce the rolling speed of the drill rod 5, play a buffering role, and reduce the impact damage of the drill rod 5 to the V-shaped groove pad 3.

[0034] Optionally, it also includes an auxiliary hanger 28 and a triangular column 29. The auxiliary hanger 28 is located on the rear side of the inclined tube frame 1, and the inclined surfaces of the auxiliary hanger 28 and the inclined tube frame 1 are spliced ​​together to form a rectangular support structure. The triangular column 29 is located on the auxiliary hanger 28, and the rebound bracket 2 is rotatably connected to the triangular column 29 through a rotating rod 32.

[0035] Furthermore, the rebound mechanism assembly includes a ball cage universal joint 30 and a spring telescopic rod 31. The ball cage universal joint 30 is connected to the side of the triangular column 29 and the rebound bracket 2 respectively through the ear plate shackle; the two ends of the spring telescopic rod 31 are connected to the ball cage universal joint 30 respectively.

[0036] In this embodiment, the rebound mechanism assembly consists of a spring telescopic rod 31 and ball cage universal joints 30 at both ends of the rod. The ball cage universal joints 30 at both ends are connected to the triangular column 29 and the two sides of the rebound bracket 2 through ear plate shackles, so as to realize that the rebound bracket 2 automatically rebounds and resets after the drill rod 5 is lowered.

[0037] Optionally, it also includes a locking rod 33, a bracket damping strip 35, and a bracket stop strip 36. Mounting holes are provided on both sides of the triangular column 29 and the rebound bracket 2, and the locking rod 33 is inserted into the mounting holes. The triangular column 29 is positioned above the auxiliary hanger 28, connected by bolts and arranged side-by-side. The triangular column 29 has a rotating rod hole and a limiting hole, providing guide holes 19 and support for the rotating rod 32 and the locking rod 33. A drag-and-release ring 34 is provided at the outer end of the locking rod 33, and two retaining springs are provided in the middle section to limit the axial displacement of the locking rod 33. The locking rod 33 cooperates with the rebound mechanism assembly to achieve the limiting and locking of the rebound bracket 2, preventing the drill rod 5 from accidentally slipping out. The bracket damping strip 35 is located at the lower end of the rebound bracket 2; in this embodiment, the bracket damping strip 35 is a 5cm high rubber damping strip. The bracket damping strip 35 reduces the impact of the drill rod 5 during lowering, preventing it from accidentally slipping into the vertical slot 4 of the tube clamping frame 1 and causing equipment damage. The bracket stop strip 36 is located on the upper surface of the tube clamping frame 1, corresponding to the lower end of the rebound bracket 2. The bracket stop strip 36 prevents the drill rod 5 from swinging out of the bracket frame due to excessive radial amplitude.

[0038] Optionally, the system also includes four uprights 37 located below the auxiliary hanger 28 and the inclined tube rack 1. The inner side of each upright 37 has a wedge-shaped notch 38 that matches the V-groove pad 3, and the groove for placing the drill rod 5 of the V-groove pad 3 is aligned vertically with the vertically oriented slot 4 of the inclined tube rack 1. The wedge-shaped notch 38 on the inner side of the upright 37 enables rapid and efficient arrangement of the V-groove pad 3.

[0039] The working process of this embodiment is as follows: First, according to the actual operation requirements, select a suitable position for stacking drill rods 5 and use a crane to hoist the entire device into place; Second, according to the quantity requirements of V-groove pads 3, quickly place an appropriate number of V-groove pads 3 into the column 37; Third, check whether each anti-tailgating interlock assembly has been unlocked and the safety pins 21 have been removed to ensure that the interlocking function can be realized; Fourth, use the interlock release lever 14 to reset each anti-tailgating interlock assembly, so that the eccentric baffle is in a backward tilted open state; Fifth, after hoisting a drill rod 5 to the springback bracket 2 with a crane, release the slings so that the drill rod 5 is placed stably on the springback bracket 2; Sixth, two people on both sides of the device simultaneously and manually drag the shackle ring 34 so that the locking lever 33 is pulled out of the springback bracket 2, the drill rod 5 is subjected to gravity and rolls down into the vertical hollow slot 4 of the stacking tube inclined frame 1, and slowly falls into the V-groove pad 3 placement opening under the action of the buffer funnel plate 27. Simultaneously, the drill rod 5 also triggers the anti-tailgating interlock assembly of this level, causing the eccentric baffle to be in a vertical position and locked; seventh, the springback bracket 2 automatically resets under the action of the springback mechanism assembly, and the locking rod 33 is manually inserted back into the springback bracket 2 to restore the function of the springback bracket 2 in supporting the drill rod 5; eighth, repeating the above process, when the drill rod 5 rolls down to the upper-level vertical hollow slot 4, it is blocked by the eccentric baffle and the action of the trajectory guide plate 26, and falls into the lower-level vertical hollow slot 4; thus Repeat the cycle until the V-groove pads 3 are fully loaded; Ninth, manually place the second layer of V-groove pads 3 on top of the first layer of V-groove pads 3 and drill rod 5. At the same time, use the interlock release lever 14 to release all anti-tailgating interlock assemblies, so that the eccentric baffle is in a backward tilted open state. Then continue to repeat the above-mentioned hoisting operation of drill rod 5; Tenth, when the V-groove pads 3 are stacked to the specified number of layers, use a crane to lift the entire device away from the stacking layer of drill rod 5. Then, hoist and transfer the drill rod 5 that has been stacked. This device operation is completed.

[0040] In summary, the multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes can quickly stack drill pipes, reduce the need for human intervention, and greatly improve operational efficiency.

[0041] Finally, it should be noted that: the accompanying drawings of the embodiments disclosed in this invention only involve structures related to the embodiments disclosed in this invention, and other structures can refer to general designs. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0042] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes, characterized in that, include: The inclined frame for tubes is located above the V-groove pad. The rear side of the inclined frame is provided with an inclined surface. Multiple vertically spaced slots are provided on the inclined surface from top to bottom. The vertical slots penetrate the inclined frame downwards, and the drill rod falls onto the V-groove pad through the vertical slots. The anti-tailgating interlock assembly consists of two mirror-image sets positioned at both ends of a vertically perforated slot. Each assembly includes a mounting frame, an eccentric baffle, and a locking mechanism. The mounting frame is connected to the inclined brackets at both ends of the vertically perforated slot. The eccentric baffle is located within the mounting frame, with its eccentric side (away from its center of gravity) rotatably connected to the mounting frame. The locking mechanism is connected to the eccentric baffle. When the locking mechanism is not locking the eccentric baffle, the eccentric baffle is rotatably connected to the mounting frame. Simultaneously, as the drill rod enters the vertically perforated slot, the locking mechanism is triggered to lock the eccentric baffle. When the locking mechanism locks the eccentric baffle, the eccentric baffle is adapted to prevent the drill rod from entering the vertically perforated slot. Springback bracket, located above the inclined frame of the tube rack, is used to support a single drill rod. The springback bracket is adapted to rotate to throw the drill rod into the vertical cutout. The spring-back mechanism assembly is located on both sides of the spring-back bracket. The spring-back mechanism assembly is used to drive the spring-back bracket to automatically spring back and reset after the drill rod is lowered.

2. The multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes according to claim 1, characterized in that, The eccentric baffle includes: The first plate is long and narrow. The lower part of the first plate is provided with a rotating shaft hole, which is rotatably connected to the mounting frame through a rotating shaft. The bottom surface of the first plate is provided with a locking hole. The second plate is located on the side of the first plate near the center of the vertical cutout. When the locking mechanism locks the eccentric baffle, the first plate is in a vertical position, and the distance between the two second plates corresponding to the same vertical hollow slot is less than the length of the drill rod; when the locking mechanism does not lock the eccentric baffle, the upper part of the first plate rotates away from the center of the vertical hollow slot, and the lower part of the first plate rotates towards the center of the vertical hollow slot.

3. The multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes according to claim 2, characterized in that, The locking mechanism includes: The locking spring pin includes a spring sleeve, a locking spring, a round-headed pin, and a cross-shaped anti-disengagement strip. The locking spring has a locking hole corresponding to the first plate body located on the upper surface of the mounting frame. The spring sleeve is fitted over the locking spring. The round-headed pin is located inside the spring sleeve. The lower end of the round-headed pin contacts the upper end of the locking spring. The lower end of the round-headed pin is also provided with a cross-shaped anti-disengagement strip. The round-headed pin is adapted to extend into the locking hole of the first plate body under the action of the locking spring, so that the first plate body is in a vertical state. A reset plate, one end of which is pressed onto the spring sleeve, and the other end of which is provided with a guide hole. A vertical guide rod is provided on the upper surface of the mounting frame, and the guide rod is located in the guide hole. The interlock release lever is connected to the end of the reset plate away from the spring sleeve. The interlock release lever and the reset plate work together to release the locking state of the locking pin of the locking spring on the eccentric baffle.

4. The multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes according to claim 3, characterized in that, The locking mechanism also includes: The unlocking safety pin is located at the bottom of the first plate, where a check hole is provided. The check hole is located near the locking hole and is connected to the locking hole. The axis of the check hole is perpendicular to that of the locking hole. When the unlocking safety pin is inserted into the check hole, it will block the round-headed pin from entering the locking hole.

5. A multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes according to claim 3, characterized in that, The locking mechanism also includes: A limiting spring locking pin is provided on the inner wall of the mounting frame. The side of the first plate is provided with a limiting hole. The limiting spring locking pin cooperates with the limiting hole to help the first plate be positioned vertically.

6. The multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes according to claim 1, characterized in that, The anti-tailgating interlock assembly also includes: The enclosure is located above the outer perimeter of the mounting frame to prevent the drill pipe from swinging out of the mounting frame due to excessive axial swing. Guide ramp, the guide ramp is set on the side of the mounting frame, the guide ramp is set near the vertical cutout below it, the guide ramp is used to assist the drill rod to enter the vertical cutout below; The buffer funnel plate has two buffer funnel plates on the two long sides at the lower end of the vertical hollowed-out groove. The two buffer funnel plates form a constricted shape, and the lower ends of the two buffer funnel plates are set in the grooves for placing the drill rods of the V-shaped groove pad wood.

7. The multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes according to claim 1, characterized in that, Also includes: An auxiliary hanger is located on the rear side of the inclined tube rack, and the inclined surfaces of the auxiliary hanger and the inclined tube rack are spliced ​​together to form a rectangular support structure. The triangular column is mounted on the auxiliary hanger, and the spring bracket is rotatably connected to the triangular column via a rotating shaft.

8. A multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes according to claim 7, characterized in that, The springback mechanism assembly includes: The ball cage universal joint is connected to the side of the triangular column and the spring bracket via ear plate shackles. The spring telescopic rod has its two ends connected to the universal joints of the ball cage.

9. A multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes according to claim 7, characterized in that, Also includes: The locking rod, the triangular post, and the spring bracket are each provided with mounting holes on both sides, and the locking rod is inserted into the mounting holes; Bracket damping strip, the bracket damping strip is located at the lower end of the rebound bracket; The bracket stop bar is located on the upper surface of the inclined frame of the code tube, corresponding to the lower end of the rebound bracket.

10. A multi-functional, high-efficiency, semi-automatic stacking device for offshore drill pipes according to claim 7, characterized in that, Also includes: The four columns are located below the auxiliary hanger and the inclined tube rack. The inner side of the column is provided with a wedge-shaped notch that matches the V-groove pad. The drill rod placement groove of the V-groove pad is aligned with the vertical cutout of the inclined tube rack on the plumb line.

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