Inner hole lifting appliance for deep sea marine riser

Abstract

The utility model discloses an inner hole lifting appliance for a deep sea riser, which belongs to the technical field of lifting appliance equipment and comprises a lifting arm, a lifting appliance body, a handle and a lifting block, the hoisting arm is connected with the hoisting tool body; a mounting groove is formed in the lower end face of the lifting appliance body, and two ends of the mounting groove in the length direction are opened in the side wall of the lifting appliance body; a long groove is formed in the outer side wall of the lifting appliance body to form an operation cavity; the lower end of the operation cavity communicates with the mounting groove; the hoisting block is rotationally mounted in the mounting groove; the handle comprises a rod body and an operating body; the rod body is located in the operation cavity and can slide up and down and left and right relative to the operation cavity. The lower end of the rod body is rotationally connected with the hoisting block, and the connecting position is eccentrically arranged relative to the rotation center of the hoisting block; the operating body is fixedly connected with the upper part of the rod body and extends out of the lifting appliance body; the handle controls the hoisting block to rotate, so that the hoisting block is accommodated in the mounting groove or extends out of the mounting groove; operation is simple, use is convenient, and operation safety is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of lifting and hoisting equipment technology, specifically to an inner hole lifting and hoisting tool for deep-sea risers. Background Technology

[0002] With the development of engineering technology and the increasing development of offshore oil and gas resources, subsea oil production facilities are gradually being widely used. To ensure the safe and stable operation of underwater production facilities, the assembly of deep-sea pipeline structures is essential and extremely important. Some special pipeline structural components are difficult to hoist during assembly, affecting assembly efficiency and posing a certain degree of risk.

[0003] Therefore, there is an urgent need for a lifting tool to lift these special pipe structures, thereby ensuring safety and efficient assembly. Summary of the Invention

[0004] To address the problems existing in the prior art, this utility model provides an inner hole lifting tool for deep-sea risers, which has a simple structure, is safe to operate, and is convenient to use.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a lifting tool for the inner bore of a deep-sea riser, including a lifting arm, a lifting body, a handle, and a lifting block;

[0007] The lifting arm is connected to the lifting body and is used to connect external lifting equipment;

[0008] The lower end face of the lifting body is provided with a mounting groove, and both ends of the mounting groove in the length direction are open on the side wall of the lifting body; a long groove is machined on the outer side wall of the lifting body to form an operating cavity, and the lower end of the operating cavity is connected to the mounting groove;

[0009] The lifting block is rotatably installed in the mounting slot;

[0010] The handle includes a rod and an operating body; the rod is located inside the operating cavity and can slide up and down and left and right relative to the operating cavity; the lower end of the rod is rotatably connected to the lifting block, and the connection position is eccentrically set relative to the rotation center of the lifting block; the operating body is fixedly connected to the upper part of the rod, and the operating body extends out of the lifting body.

[0011] The handle controls the rotation of the lifting block, so that the lifting block is housed in the mounting slot or a portion of the lifting block extends out of the mounting slot from an opening along the length of the mounting slot.

[0012] In the aforementioned deep-sea riser inner bore lifting device, the lifting block has at least a first locking portion, which extends radially about the rotation center of the lifting block; when the lifting block rotates, the first locking portion can extend out of the mounting groove from the opening in the length direction of the mounting groove.

[0013] In the aforementioned deep-sea riser inner bore lifting device, the lifting block further has a second locking part, which is symmetrically arranged with the first locking part about the rotation center of the lifting block.

[0014] In the above-mentioned deep-sea riser inner hole lifting tool, the first snap-fit ​​part and the second snap-fit ​​part have different weights, and the handle is connected to the lifting block at a position closer to the lighter one of the two.

[0015] And / or, the first latching portion and the second latching portion have different shapes;

[0016] And / or, when the lifting block is in the connected state, the connection position of the handle and the lifting block is located above the rotation center of the lifting block, and the vertical distance H is 5mm-10mm.

[0017] In the aforementioned deep-sea riser inner bore hoisting tool, the side opening of the long groove is sealed with a plug iron.

[0018] In the aforementioned deep-sea riser inner bore lifting device, the plug completely seals the side opening of the long groove.

[0019] In the aforementioned deep-sea riser inner bore lifting device, the long groove extends along the entire length of the lifting body;

[0020] And / or, the operating body is fixed to the upper end of the rod and is an integral structure.

[0021] In the aforementioned deep-sea riser inner bore lifting device, the portion of the operating body extending beyond the lifting body extends in a direction perpendicular to the length of the lifting body, positioning the lower limit position of the handle.

[0022] In the aforementioned deep-sea riser inner bore lifting device, the lifting arm is installed at the upper end of the lifting body;

[0023] And / or, the lifting arm is U-shaped;

[0024] And / or, the lifting arm is rotatably connected to the lifting body via a connector; the connector includes an outer limiting part, a shaft part, and an inner connecting part, the shaft part is located between the outer limiting part and the inner connecting part, the lifting arm is rotatably mounted on the shaft part, the outer limiting part blocks the outside of the lifting arm, and the inner connecting part is threadedly connected to the lifting body;

[0025] And / or, the lower end surface of the lifting body is provided with two connecting arms, and the mounting groove is formed between the two connecting arms; the lower ends of the two connecting arms are connected or spaced apart.

[0026] In the aforementioned deep-sea riser inner hole lifting device, a positioning shaft is provided in the installation groove to position the rotation of the lifting block, so as to ensure that the lifting block will not continue to rotate after rotating to the separation and storage state.

[0027] The beneficial effects of this utility model are as follows:

[0028] The lifting tool for the inner bore of deep-sea risers uses a handle to control the rotation of the lifting block. The handle is rotatably connected to the lifting block. Pulling up or pushing down the handle switches the lifting block between the connected and disassembled storage states. It is simple to operate, convenient to use, and increases the assembly speed by 70%.

[0029] The overall structure is simple and the manufacturability of each component is fully considered, making it easy to implement, manufacture, and promote its application.

[0030] The lifting block can be positioned using the lifting body, ensuring high reliability of the connection with the workpiece, reducing the risk factor of lifting, and guaranteeing operational safety. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the inner hole hoisting tool for the deep-sea riser of this utility model;

[0032] Figure 2 This is a front view of the inner hole lifting device for the deep-sea riser of this utility model;

[0033] Figure 3 for Figure 2 The left view;

[0034] Figure 4 for Figure 1 A magnified view of area A in the middle;

[0035] Figure 5 This is a schematic diagram of the connecting component in the inner hole hoisting tool for the deep-sea riser of this utility model;

[0036] Figure 6 This is a schematic diagram of the connection structure between the lifting block and the handle in the inner hole lifting device for the deep-sea riser of this utility model;

[0037] Figure 7 This is a schematic diagram showing the lifting block in a separated and stored state in the inner hole lifting device of the deep-sea riser of this utility model;

[0038] Figure 8 This is a schematic diagram showing the lifting block in the connected state of the lifting device for the inner bore of the deep-sea riser of this utility model.

[0039] In the picture:

[0040] 1-Lifting arm; 2-Lifting body; 3-Handle; 4-Connector; 5-Lifting block; 6-Positioning shaft; 7-Clamping bolt; 8-Rotating shaft; 9-Connecting shaft; 10-Plug; 11-Mounting groove; 12-Long groove; 13-Connecting arm; 14-Shaft; 15-Inner connecting part; 16-Outer limiting part; 17-Operating body; 18-Rod body; 19-First locking part; 20-Workpiece; 21-Second locking part. Detailed Implementation

[0041] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0042] Firstly, please refer to Figures 1-6 This invention provides an embodiment of a lifting device for the inner bore of a deep-sea riser, comprising a lifting arm 1, a lifting body 2, a handle 3, and a lifting block 5. The lifting arm 1 is connected to the lifting body 2 for connecting external lifting equipment; the handle 3 and the lifting block 5 are mounted on the lifting body 2, and the handle 3 controls the state of the lifting block 5, thereby allowing the lifting block 5 to move as described above. Figure 8 The connection status shown and as follows Figure 7 The diagram shows the switching between the detached and stowed states. When the lifting block 5 is in the connected state, it rests on the stepped surface or process surface of the inner hole of the workpiece 20, or directly on the lower end face of the workpiece 20. When the lifting block 5 is in the detached and stowed state, it is completely located inside the lifting body 2 in the length direction perpendicular to the lifting body 2, and there is no interference when the lifting body 2 enters or leaves the inner hole of the workpiece 20. Whether the lifting block 5 extends beyond the lower end face of the lifting body 2 is not limited; it can extend or not, depending on actual needs.

[0043] like Figure 4As shown, a mounting groove 11 is provided on the lower end face of the lifting body 2. Both ends of the mounting groove 11 in the length direction are open on the side wall of the lifting body 2. In this way, the mounting groove 11 divides the lower end of the lifting body 2 into two connecting arms 13, which extend along the length direction of the lifting body 2. Preferably, the connecting arms 13 and the lifting body 2 are an integral structure, which simplifies the structure of the lifting body 2 and takes into account both structural strength and processing technology. The lower ends of the two connecting arms 13 can be directly connected or connected through connecting plates or other connecting parts as needed to further enhance structural stability; or the lower ends of the two connecting arms 13 can be spaced apart to keep the lower opening of the mounting groove 11 open, which facilitates assembly.

[0044] The lifting block 5 is located within the mounting groove 11 and is rotatably mounted on two connecting arms 13 via a rotating shaft 8. Specifically, countersunk holes are machined on the outer walls of the connecting arms 13, penetrating the connecting arms 13 and connecting to the mounting groove 11. A limiting head is provided at the first end of the rotating shaft 8, which engages with the countersunk holes to axially limit the first end of the rotating shaft 8; a threaded hole is provided at the second end of the rotating shaft 8, which is connected to the threaded hole by a clamping bolt 7 to axially limit the second end of the rotating shaft 8, thereby connecting the rotating shaft 8 and the lifting body 2 into a single unit. The lifting block 5 can rotate freely within the mounting groove 11 without interference from the groove wall. Of course, the assembly of the lifting block 5 and the connecting arms 13 can also be carried out in other ways, not limited to the combination of the rotating shaft 8 with the lifting block 5 and the connecting arms 13.

[0045] The lifting block 5 has at least a first engaging portion 19, which extends radially about the rotation center of the lifting block 5. When the lifting block 5 rotates, the first engaging portion 19 can extend out of the mounting groove 11 from the opening in the length direction of the mounting groove 11 or be stored in the mounting groove 11. It must be ensured that when the lifting block 5 is in the connected state, the first engaging portion 19 extends out of the mounting groove 11 and is reliably connected to the workpiece 20.

[0046] The lifting body 2 has an operating cavity, the lower end of which is connected to the mounting groove 11. The handle 3 includes a rod 18 and an operating body 17, with the operating body 17 fixedly connected to the upper part of the rod 18; preferably, the operating body 17 is fixed to the upper end of the rod 18 and is an integral structure. The rod 18 is located inside the operating cavity and can slide up and down relative to the operating cavity; the dimension of the operating cavity in the direction perpendicular to the length of the lifting body 2 is larger than that of the rod 18, allowing the rod 18 to slide left and right relative to the operating cavity. The lower end of the rod 18 is rotatably connected to the lifting block 5 via a connecting shaft 9, which is eccentrically positioned relative to the rotation center of the lifting block 5. The operating body 17 is connected to the upper part of the rod 18 and extends outward from the lifting body 2. For example, when the upper end of the operating cavity is open on the upper surface of the lifting body 2, the operating body 17 extends from the upper end of the lifting body 2; or, the operating cavity is open on the side wall of the lifting body 2, and the operating body 17 extends from the side of the lifting body 2.

[0047] By pulling up or pushing down the handle 3, the lifting block 5 can be rotated at a set angle, thereby causing the first locking part 19 of the lifting block 5 to extend horizontally, that is, perpendicular to the length direction of the lifting body 2, and enter the connection state; or causing the first locking part 19 of the lifting block 5 to extend vertically, that is, parallel to the length direction of the lifting body 2, and enter the separation and storage state.

[0048] Given the large length of the lifting body 2, directly machining the operating cavity inside the lifting body 2 is complex and difficult to implement. Therefore, it is preferable to machine a long groove 12 on the outer wall of the lifting body 2 to form the operating cavity; the rod 18 is located inside the long groove 12, and the operating body 17 extends out of the long groove 12. To prevent the handle 3 from detaching from the side opening of the long groove 12, a stopper 10 is used to seal the side opening of the long groove 12. The stopper 10 can be only set in a local area of ​​the long groove 12, either in a dotted or strip-shaped distribution. Preferably, the stopper 10 completely seals the side opening of the long groove 12 to prevent foreign objects from entering the long groove 12 and affecting the operation and control of the handle 3.

[0049] Furthermore, the long slot 12 extends along the entire length of the lifting body 2, meaning it has openings on both the upper and lower ends of the lifting body 2. The operating body 17 is located at the upper end of the rod 18 and extends out of the lifting body 2 from the upper opening of the long slot 12. The portion extending out of the lifting body 2 extends perpendicular to the length of the lifting body 2 and can cooperate with the lifting body 2 and the stop block 10 to position the lower limit of the handle 3. That is, when the lifting block 5 is in the connected state, the operating body 17 rests against the upper end of the lifting body 2 to maintain the horizontal position of the lifting block 5, thereby achieving a stable connection between the lifting block 5 and the workpiece 20.

[0050] like Figure 6 As shown, when the lifting block 5 is in the connected state, the center of the connecting shaft 9 is located above the center of the rotating shaft 8, and the vertical distance H is preferably 5mm-10mm. If the position of the connecting shaft 9 is too low, it will be difficult to pull the lifting block 5 when the connection with the workpiece 20 is released. If the distance is too high, it will be unstable when pulling the lifting block 5.

[0051] The lifting boom 1 is installed on the upper end of the lifting body 2. The lifting boom 1 is preferably U-shaped, with symmetrical through holes on both sides, and is movably connected to the lifting body 2 using connectors 4. Figure 5 As shown, the connector 4 includes an outer limiting part 16, a shaft part 14, and an inner connecting part 15. The shaft part 14 is located between the outer limiting part 16 and the inner connecting part 15. The lifting arm 1 is rotatably fitted onto the outside of the shaft part 14 through a through hole. The outer limiting part 16 blocks the outside of the lifting arm 1 to prevent it from detaching from the shaft part 14; the inner connecting part 15 is threadedly connected to the lifting body 2.

[0052] In use, the lifting boom 1 is connected to lifting equipment, such as a crane. During lifting, if... Figure 7As shown, first, the lifting block 5 is put into a separated and stored state by controlling the handle 3 to avoid interference when the lifting device enters the inner hole of the workpiece 20; then the lifting body 2 is inserted into the inner hole of the workpiece 20.

[0053] After the lifting block 5 reaches the set position, the locking part 19 of the lifting block 5 is controlled to extend out of the mounting groove 11, and the lifting block 5 enters the connection state; the operating body 17 abuts against the upper end surface of the lifting body 2 to maintain the connection state of the lifting block 5.

[0054] Pull the lifting body 2 upwards again so that the lifting block 5 rests on the end face or the stepped surface of the inner hole of the workpiece 20, as shown. Figure 8 As shown.

[0055] After use, adjust the lifting block 5 to the detached storage state and remove the lifting body 2 from the inner hole of the workpiece 20.

[0056] Preferably, the lifting block 5 also has a second locking part 21, which is symmetrically arranged with the first locking part 19 about the pivot 8. When the lifting block 5 is in the connected state, the first locking part 19 and the second locking part 21 jointly support the workpiece 20, resulting in better stability.

[0057] Furthermore, the first locking part 19 and the second locking part 21 have different weights, and the handle 3 is connected to the lifting block 5 closer to the lighter one. This ensures that when the first locking part 19 and the second locking part 21 are parallel to the length direction of the lifting body 2, the lifting block 5 is stable and does not roll over because its center of gravity is below its rotation center.

[0058] Preferably, the first latching part 19 and the second latching part 21 have different shapes. For example, the width of the second latching part 21 is greater than the width of the first latching part 19, which makes it easy to distinguish the first latching part 19 and the second latching part 21; the handle 3 and the second latching part 21 are rotatably connected through the connecting shaft 9.

[0059] Furthermore, a positioning shaft 6 is provided within the mounting groove 11. The distance between the positioning shaft 6 and the rotation center of the lifting block 5 is less than the rotation radius of the lifting block 5. This ensures that the lifting block 5 rotates counterclockwise and is housed within the mounting groove 11, and then stops rotating. This prevents the lifting block 5 from extending out of the mounting groove 11 again due to excessive rotation angle, which would affect operational safety. The positioning shaft 6 ensures that the lifting block 5 returns to its stable state after detaching from the workpiece 20, i.e., the first locking part 19 and the second locking part 21 of the lifting block 5 extend vertically.

[0060] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lifting device for the inner bore of a deep-sea riser, characterized in that, It includes a lifting boom (1), a lifting body (2), a handle (3), and a lifting block (5); The lifting arm (1) is connected to the lifting body (2) and is used to connect external lifting equipment; The lower end face of the lifting body (2) is provided with a mounting groove (11), and both ends of the mounting groove (11) in the length direction are open on the side wall of the lifting body (2); a long groove (12) is machined on the outer side wall of the lifting body (2) to form an operating cavity, and the lower end of the operating cavity is connected to the mounting groove (11). The lifting block (5) is rotatably installed in the mounting groove (11); The handle (3) includes a rod (18) and an operating body (17); the rod (18) is located inside the operating cavity and can slide up and down and left and right relative to the operating cavity; the lower end of the rod (18) is rotatably connected to the lifting block (5), and the connection position is eccentrically set relative to the rotation center of the lifting block (5); the operating body (17) is fixedly connected to the upper part of the rod (18), and the operating body (17) extends out of the lifting body (2); The handle (3) controls the rotation of the lifting block (5), so that the lifting block (5) is housed in the mounting groove (11) or a portion of the lifting block (5) extends out of the mounting groove (11) from the opening in the length direction of the mounting groove (11).

2. The inner bore lifting device for a deep-sea riser according to claim 1, characterized in that, The lifting block (5) has at least a first snap-fit ​​portion (19), which extends radially about the rotation center of the lifting block (5); when the lifting block (5) rotates, the first snap-fit ​​portion (19) can extend out of the mounting groove (11) from the opening in the length direction of the mounting groove (11).

3. The inner bore lifting device for a deep-sea riser according to claim 2, characterized in that, The lifting block (5) also has a second locking part (21), which is symmetrically arranged with the first locking part (19) about the rotation center of the lifting block (5).

4. The inner bore lifting device for a deep-sea riser according to claim 3, characterized in that, The first latching part (19) and the second latching part (21) have different weights, and the handle (3) is connected to the lifting block (5) closer to the lighter one of the two. And / or, the first snap-fit ​​portion (19) and the second snap-fit ​​portion (21) have different shapes; And / or, when the lifting block (5) is in the connected state, the connection position of the handle (3) and the lifting block (5) is located on the upper side of the rotation center of the lifting block (5), and the vertical distance H is 5mm-10mm.

5. The inner bore lifting device for a deep-sea riser according to claim 1, characterized in that, The side opening of the long groove (12) is sealed with a plug iron (10).

6. The inner bore lifting device for a deep-sea riser according to claim 5, characterized in that, The plug (10) completely blocks the side opening of the long groove (12).

7. The inner bore lifting device for a deep-sea riser according to claim 1, characterized in that, The long slot (12) extends along the entire length of the lifting body (2); And / or, the operating body (17) is fixed to the upper end of the rod (18) and is an integral structure.

8. The inner bore lifting device for a deep-sea riser according to claim 5, characterized in that, The portion of the operating body (17) extending out of the lifting body (2) extends in a length direction perpendicular to the lifting body (2) and positions the lower limit of the handle (3).

9. The inner bore lifting device for a deep-sea riser according to claim 1, characterized in that, The lifting arm (1) is installed on the upper end of the lifting body (2); And / or, the lifting arm (1) is U-shaped; And / or, the lifting arm (1) is rotatably connected to the lifting body (2) via a connector (4); the connector (4) includes an outer limiting part (16), a shaft part (14) and an inner connecting part (15), the shaft part (14) is located between the outer limiting part (16) and the inner connecting part (15), the lifting arm (1) is rotatably mounted on the shaft part (14), the outer limiting part (16) blocks the outside of the lifting arm (1), and the inner connecting part (15) is threadedly connected to the lifting body (2); And / or, the lower end face of the lifting body (2) is provided with two connecting arms (13), and the mounting groove (11) is formed between the two connecting arms (13); the lower ends of the two connecting arms (13) are connected or spaced apart.

10. The inner bore lifting device for a deep-sea riser according to claim 1, characterized in that, The mounting groove (11) is provided with a positioning shaft (6) for rotating and positioning the lifting block (5) to ensure that the lifting block (5) will not continue to rotate after rotating to the separation and storage state.

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