Lifting frame type blowout preventer crane horizontally driven by oil cylinder

Abstract

The utility model discloses an oil cylinder horizontal driving hanging frame type blowout preventer crane which comprises a crane main beam arranged on a track I-shaped beam of a ship body platform structure, and a horizontal driving oil cylinder main body is installed below a bridge frame structure in the center area of the inner side of the crane main beam structure. An oil cylinder fixed pulley block is installed at the end, on one side of a rodless cavity, of a cylinder body of the horizontal driving oil cylinder, an oil cylinder movable pulley block is installed at the end, on one side of a piston rod of the horizontal driving oil cylinder, of the horizontal driving oil cylinder, and positioning guide pulleys are installed on the crane main beam and comprise the horizontal guide pulley and the vertical guide pulley. And the horizontal guide pulleys are mounted and distributed at the upper part in the crane girder bridge structure. The lifting stroke of the steel wire rope is doubled by increasing thrust through the oil cylinder, meanwhile, a large space is saved on the spatial layout of the crane body structure, the whole structure is simple, the manufacturing cost is reduced, and the accuracy and the reliability of equipment operation are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of oil drilling platform equipment, specifically a hydraulic cylinder horizontal drive frame-type blowout preventer crane. Background Technology

[0002] Currently, large-tonnage blowout preventer (BOP) cranes on oil drilling platforms generally adopt a forklift crane design. The crane itself has the function of raising and lowering, and the fork structure can carry the BOP and move it to the work area or rest area to meet the usage requirements of different working conditions. However, this type of forklift crane has a large space requirement. The equipment installation area must have sufficient space to meet the installation and use needs of the forklift crane. It is not suitable for ship-type cranes with smaller spaces, especially when the equipment needs to be installed at the top and the space above is limited by height. In such cases, the forklift crane cannot meet the space installation requirements.

[0003] In addition, the main load-bearing structure of the blowout preventer forklift and the forklift carrying structure are both made of marine high-strength structural steel by welding and machining, which has a high manufacturing cost. During the manufacturing process, the design requirements of the forklift structure are also quite strict. Improper error control will affect the installation and operation of the equipment. Utility Model Content

[0004] The purpose of this invention is to provide a hydraulic cylinder-driven horizontally driven frame-type blowout preventer crane to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic cylinder horizontally driven frame-type blowout preventer crane, comprising a crane main beam mounted on an I-beam track of a ship platform structure, characterized in that: a horizontally driven hydraulic cylinder body is installed below the bridge structure in the inner central area of ​​the crane main beam structure; a fixed hydraulic cylinder pulley assembly is installed at the cylinder end on the rodless chamber side of the horizontally driven hydraulic cylinder body; a movable hydraulic cylinder pulley assembly is installed at the piston rod side of the horizontally driven hydraulic cylinder body; and a positioning guide is installed on the crane main beam. The guide pulleys are divided into horizontal guide pulleys and vertical guide pulleys. The horizontal guide pulleys are installed in the upper part of the main beam bridge structure of the crane, and the vertical guide pulleys are installed at the four corners of the main beam bridge structure of the crane. A steel wire rope is installed on the main body of the horizontal drive cylinder. The steel wire rope passes through the cylinder's moving pulley group and the cylinder's fixed pulley group and winds around the main body of the horizontal drive cylinder in a horizontal direction. Then, it is guided by the guide pulleys to exit vertically downwards and is connected to a lifting frame. The lifting frame is located directly below the main beam of the crane.

[0006] Preferably, the main beam of the crane is made by welding a combination of a double box girder structure and a central X-shaped bridge structure.

[0007] Preferably, the horizontal drive cylinder body is installed and fixed inside the crane main beam bridge structure by a semi-circular flange slide structure and fasteners.

[0008] Preferably, the hydraulic cylinder fixed pulley assembly is assembled from a welded pulley box, a pin shaft, and four pulleys. The pulley box is connected to the end of the horizontal drive cylinder body via a flange.

[0009] Preferably, the hydraulic cylinder pulley assembly is composed of a welded pulley box, a pin shaft, and eight pulleys. The pulley box is connected to the piston rod end of the horizontal drive cylinder body via an end boss and a flange.

[0010] Preferably, the positioning guide pulleys are distributed above the horizontal drive cylinder body, on both sides, and at the four opposite corners of the X-shaped bridge structure.

[0011] Preferably, there are four steel wire ropes in total, two of which are fixed at their fixed ends to the lifting lugs welded on both sides of the horizontal drive cylinder body, and the other two are fixed at the lifting lugs welded to the bottom of the pulley box of the cylinder's fixed pulley group.

[0012] Preferably, the lifting frame is composed of a box-beam welded frame, wire rope wedge buckles, wire rope threaded adjusting trunnions, connecting pins and adjusting nuts, with four lifting lugs welded to the lower corners of the lifting frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By employing a fixed horizontal extension and retraction stroke of the hydraulic cylinder and increasing the vertical stroke of the wire rope by four times, the blowout preventer can be vertically hoisted. This solves the design problem of limited installation space at the top of the crane, while also making the main structure of the crane more flexible, simple, and lightweight, reducing the total weight of the equipment, lowering manufacturing costs, improving the accuracy and reliability of the equipment operation, and thus improving work efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the blowout preventer crane provided by this utility model;

[0016] Figure 2 This is a top view of the blowout preventer crane provided by this utility model;

[0017] Figure 3 This is a front view structural diagram of the blowout preventer crane provided by this utility model;

[0018] Figure 4 This is a schematic diagram of the main beam of the crane in this utility model;

[0019] Figure 5This is an assembly diagram of the horizontal drive cylinder in this utility model;

[0020] Figure 6 This is a three-dimensional schematic diagram of the position of the lifting frame when the horizontal drive cylinder is fully retracted in this utility model.

[0021] Figure 7 This is a three-dimensional schematic diagram of the position of the lifting frame when the horizontal drive cylinder is fully extended in this utility model.

[0022] In the diagram: 1. Crane main beam; 2. Horizontal drive cylinder body; 3. Cylinder fixed pulley block; 4. Cylinder moving pulley block; 5. Positioning guide pulley; 6. Wire rope; 7. Lifting frame; 51. Horizontal guide pulley; 52. Vertical guide pulley. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-7 This utility model provides a technical solution: a hydraulic cylinder horizontally driven frame-type blowout preventer crane, including a crane main beam 1 installed on an I-beam track of a ship platform structure. The crane main beam 1 is characterized by: a horizontally driven hydraulic cylinder body 2 installed below the bridge structure in the inner central area of ​​the crane main beam 1; a fixed hydraulic cylinder pulley assembly 3 installed at the cylinder end on the rodless chamber side of the horizontally driven hydraulic cylinder body 2; a movable hydraulic cylinder pulley assembly 4 installed at the piston rod side of the horizontally driven hydraulic cylinder body 2; and a positioning guide pulley 5 installed on the crane main beam 1, the positioning guide pulley 5 being divided into a horizontal guide pulley 51 and a vertical guide pulley 52. Pulley 52 and horizontal guide pulley 51 are installed in the upper part of the main beam 1 of the crane. Vertical guide pulley 52 are installed at the four corners of the main beam 1 of the crane. A wire rope 6 is installed on the main body 2 of the horizontal drive cylinder. The wire rope 6 passes through the cylinder moving pulley group 4 and the cylinder fixed pulley group 3 and winds around the main body 2 of the horizontal drive cylinder in the horizontal direction. Then it is guided by the positioning guide pulley 5 to exit vertically downward and is connected to the lifting frame 7. The lifting frame 7 is located directly below the main beam 1 of the crane. The crane and the lifting frame are connected by the wire rope. The lifting frame can be raised and lowered vertically by the wire rope.

[0025] The blowout preventer crane of this utility model has a modular overall structure. The owner only needs to supply power to the blowout preventer crane system and no other power is required. This facilitates the overall installation and disassembly of the equipment, minimizes the space occupied by the blowout preventer lifting equipment and the variable load of the entire ship, and through the setting of its wire rope winding fixed pulley group and moving pulley group, the displacement of the lifting frame in the longitudinal height is four times the displacement in the horizontal length. This effectively utilizes the limited space on the top of the hull and the longitudinal vertical space, thus achieving the rationality of dedicated ship and customized design.

[0026] In this utility model, the main beam 1 of the crane is made by welding a combination of a double box beam structure and a central X-shaped bridge structure.

[0027] In this utility model, the horizontal drive cylinder body 2 is installed and fixed inside the crane main beam 1 bridge structure by a semi-circular flange slide structure and fasteners.

[0028] In this utility model, the hydraulic cylinder fixed pulley group 3 is assembled from a welded pulley box, a pin shaft, and four pulleys. The pulley box is connected to the end of the horizontal drive cylinder body 2 via a flange.

[0029] In this utility model, the hydraulic cylinder moving pulley group 4 is assembled from a welded pulley box 2, a pin shaft 2 and eight pulleys 2. The pulley box 2 is connected to the piston rod end of the horizontal drive hydraulic cylinder body 2 through an end boss and a flange.

[0030] In this utility model, the positioning guide pulleys 5 are respectively distributed above the horizontal drive cylinder body 2, on both sides, and at the four opposite corners of the X-shaped bridge structure, serving as horizontal and vertical guides respectively.

[0031] In this utility model, there are four steel wire ropes 6 in total. Two of the steel wire ropes 6 are fixed at their fixed ends on the lifting lugs welded on both sides of the horizontal drive cylinder body 2, and the other two steel wire ropes 6 are fixed on the lifting lugs welded to the bottom of the pulley box of the cylinder fixed pulley group 3. The four steel wire ropes are respectively wound through two movable pulleys and one fixed pulley, then led out laterally through the horizontal positioning guide pulley, and then led out vertically through the vertical positioning guide pulley, connecting the steel wire ropes vertically downward to the end of the lifting frame.

[0032] In this utility model, the lifting frame 7 is composed of a box-beam welded frame, a wire rope wedge buckle, a wire rope threaded adjusting trunnion, a connecting pin, and an adjusting nut. Four lifting lugs are welded to the bottom of the four corners of the lifting frame 7, and these lifting lugs will eventually be connected to the blowout preventer.

[0033] In terms of horizontal extension, this utility model connects a fixed pulley block to the rodless end of the hydraulic cylinder and a movable pulley block to the piston rod end of the hydraulic cylinder. The wire rope is wound around the hydraulic cylinder by a reasonable arrangement of 4 fixed pulleys and 8 movable pulleys, which can achieve a ratio of 1:4 between the horizontal extension length of the hydraulic cylinder and the vertical lifting height of the lifting frame. That is, if the hydraulic cylinder extends horizontally by 1 meter, the lifting frame will rise vertically by 4 meters. Then, the lifting frame is connected to the target object to complete the normal operation of the crane for transportation.

[0034] This invention solves the design problem of limited installation space at the top of the crane by using a hydraulic cylinder to extend and retract its fixed stroke in the horizontal direction and increasing the vertical stroke of the wire rope by four times to achieve vertical hoisting of the blowout preventer. It also makes the main structure of the crane more flexible, simple and lightweight, reduces the total weight of the equipment, lowers the manufacturing cost, improves the accuracy and reliability of the equipment operation, and thus improves the work efficiency.

[0035] The contents not described in detail in this specification are prior art known to those skilled in the art. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder-driven horizontal-drive frame-type blowout preventer crane, comprising a crane main beam (1) mounted on an I-beam of a track on a ship platform structure, characterized in that: A horizontal drive cylinder body (2) is installed below the bridge structure in the inner center area of ​​the main beam (1) of the crane. A cylinder fixed pulley assembly (3) is installed at the cylinder end on the rodless chamber side of the horizontal drive cylinder body (2). A cylinder moving pulley assembly (4) is installed at the piston rod side of the horizontal drive cylinder body (2). A positioning guide pulley (5) is installed on the main beam (1) of the crane. The positioning guide pulley (5) is divided into a horizontal guide pulley (51) and a vertical guide pulley (52). The horizontal guide pulley (51) is installed in a distributed manner. At the upper part of the main beam (1) of the crane, vertical guide pulleys (52) are installed at the four corners of the main beam (1) of the crane. A wire rope (6) is provided on the main body (2) of the horizontal drive cylinder. The wire rope (6) passes through the cylinder moving pulley group (4) and the cylinder fixed pulley group (3) to wind around the main body (2) of the horizontal drive cylinder in the horizontal direction. Then, it is guided by the positioning guide pulley (5) to exit vertically downward and is connected to the lifting frame (7). The lifting frame (7) is located directly below the main beam (1) of the crane.

2. The hydraulic cylinder horizontal drive frame-type blowout preventer crane according to claim 1, characterized in that: The main beam (1) of the crane is made by welding a combination of a double box beam structure and a central X-shaped bridge structure.

3. The hydraulic cylinder horizontal drive frame-type blowout preventer crane according to claim 1, characterized in that: The horizontal drive cylinder body (2) is installed and fixed inside the crane main beam (1) bridge structure by a semi-circular flange slide structure and fasteners.

4. A hydraulic cylinder-driven horizontal-drive frame-type blowout preventer crane according to claim 1, characterized in that: The cylinder fixed pulley assembly (3) is assembled from a welded pulley box, a pin shaft, and four pulleys. The pulley box is connected to the end of the horizontal drive cylinder body (2) via a flange.

5. A hydraulic cylinder-driven horizontal-drive frame-type blowout preventer crane according to claim 1, characterized in that: The hydraulic cylinder moving pulley assembly (4) is assembled from a welded pulley box 2, a pin shaft 2 and eight pulleys 2. The pulley box 2 is connected to the piston rod end of the horizontal drive cylinder body (2) through an end boss and a flange.

6. A hydraulic cylinder-driven horizontal-drive frame-type blowout preventer crane according to claim 1, characterized in that: The positioning guide pulleys (5) are respectively distributed above, on both sides and at the four opposite corners of the X-shaped bridge structure of the horizontal drive cylinder body (2).

7. A hydraulic cylinder-driven horizontal-drive frame-type blowout preventer crane according to claim 1, characterized in that: There are four steel wire ropes (6). Two of the steel wire ropes (6) are fixed at their fixed ends on the lifting lugs welded on both sides of the horizontal drive cylinder body (2). The other two steel wire ropes (6) are fixed at the lifting lugs welded to the bottom of the pulley box of the cylinder fixed pulley group (3).

8. A hydraulic cylinder-driven horizontal-drive frame-type blowout preventer crane according to claim 1, characterized in that: The lifting frame (7) is composed of a box beam welded frame, wire rope wedge buckle, wire rope threaded adjusting trunnion, connecting pin and adjusting nut. Four lifting lugs are welded to the bottom of the four corners of the lifting frame (7).

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